The Issue The central issue in this case is whether the application for a surface water management permit (permit no. 4-009-0077AM) filed by the Respondent, David A. Smith (Applicant), should be approved.
Findings Of Fact Based upon the prehearing stipulations of the parties, the testimony of the witnesses, and the documentary evidence received at the hearing, the following findings of fact are made: The Applicant is the owner of the subject property. The Applicant filed an application for a permit to construct a stormwater management system which was proposed to serve a residential and golf course development to be known as Sabal Hammocks. The site of the proposed project is approximately 720 acres in size and is located in township 24 south, sections 28, 29, 30, 32, 33, and 34, range 35 east, Brevard County, Florida. The entire project site for the Sabal Hammocks development is located within the boundaries of the St. Johns River Water Management District. To the west of the project site is an 140 acre public park that treats its own stormwater and releases pre-treated stormwater during some storm events into the canals on the Sabal Hammocks site. The Applicant's site is located adjacent to Lake Poinsett and prior uses of the land have included cattle grazing and the cultivation of rye and oats. The Applicant filed his application for the stormwater management permit (permit NO. 4-009-0077AM) on December 22, 1989. That application was deemed complete by the District on June 19, 1990. The District issued a notice of its intended action to approve the permit application on June 28, 1990. Save timely filed a petition challenging the proposed action. By law the District is the appropriate agency charged with the responsibility of reviewing applications for stormwater management permits within the subject area. Save is an association of individual persons and representatives from groups who utilize the waters of Lake Poinsett and its surrounding areas for recreational and business purposes. The receiving waters for stormwater discharge from the proposed Sabal Hammocks development will be Lake Poinsett. That water body is classified as Class III waters. Currently, a dike system exists along the southern boundary of the subject property. That dike system separates the internal grazing lands of the parcel from the lower marsh and flooded areas external to the dike. A series of ditches cross the parcel to drain the interior areas. Two agricultural discharge pumps are currently in use at the site. The operation of those pumps has been authorized pursuant to a consent order approved by the District's governing board on December 13, 1990. The dike system on the subject site has been in place since the 1970s. The original construction specifications of the dike are unknown. Sometime in the 1980s, several openings or breaches were cut in the dike system. Those breaches were opened pursuant to permits issued by the District and the Department of Environmental Regulation (DER) . The breaches were cut to a sufficient width and depth to allow boats to navigate through to interior areas of the subject property during those times when the water levels outside the dike would allow such entrance. The breaches were not cut to ground level and the original dike remained intact and uncompromised by the breaches. That is, the dike has not failed to impede water movement and the integrity of the dike was not weakened by the breaches. The original outline, dimension of the dike, remained visible despite the breaches. In 1986, the Applicant requested permission from the District staff in order to close or restore the dike breaches. At that time, the District staff advised David Smith that a permit would not be required to restore the dike since such improvements would be considered a maintenance exemption. Subsequently, and in reliance upon the representations made by the District's director,, the Applicant closed the breaches and restored the continuity of the dike system of the subject property. The Applicant's work to close the breaches was performed in an open manner, would have been visible to persons using the adjacent marsh or water areas for recreational purposes, and was completed at least one year prior to the application being filed in this case. Neither the District nor DER has asserted that the work to complete the original dike in the 1970s, nor the breaches completed in the 1980s, nor the restoration of the breaches in 1986 was performed in violation of law. Further, the District had knowledge of the subject activities. Save contends that the restoration of the dike system was contrary to law and that it was not afforded a point of entry to contest the closure of the breaches. Additionally, Save infers that the original construction of the dike system in the early 1970s was without authorization from authorities. Save's contention is that the prior condition of the property, ie. the parcel with breached openings, must be considered the correct pre- development condition of the land. The District, however, considered the pre- development condition of the parcel to be that of a diked impoundment separated from Lake Poinsett. The same assumption was made regarding the pumping of water from the area enclosed by the dike via an existing 36 inch pump which discharges to Bass Lake (and then to Lake Poinsett) and an existing 12 inch pump that discharges into the marsh areas adjacent to the property (between it and Lake Poinsett). The District's consideration of the site and the application at issue was based upon the actual condition of the land as it existed at the time this application was filed. The pre-development peak rate and volume of discharge from the site was calculated based upon the maximum discharge capacity of the two existing pumps (described above). Accordingly, the maximum pre-development rate of discharge from the two existing pumps is in the range of 90-107 cubic feet per second. The pre-development volume of discharge, based upon actual pump records, was calculated as 710 acre-feet for a 25 year, 96 hour storm event. The total areas encompassed by the Applicant's proposal are the 720 acre site where the golf course and residential homes will be located together with 140 acres from an adjacent public park. The runoff entering the stormwater system from that public park will have already been treated in its own stormwater management system. The Applicant's proposed stormwater system will consist of a series of lakes and interconnected swales. This wet detention system will capture the runoff and direct its flow through the series of swales and lakes via culverts. The waters will move laterally from the northwestern portion of the parcel to she southeastern end of the site. From the final collecting pond, she waters will be pumped to Bass Lake and ultimately flow to Lake Poinsett. Wet detention systems generally provide greater pollutant treatment efficiencies than other types of stormwater treatment systems. The maintenance associated with these systems is also considered less intensive than other types of treatment systems. The wet detention system proposed for Sabal Hammocks accomplishes three objectives related to the flow of stormwater. The first objective, the collection of the. stormwater, requires the creation of several lakes or pools into which water is directed and accumulates. The size and dimension of the lakes will allow the volume of accumulated water to be sufficient to allow stormwater treatment. The capacity of the lakes will also provide for a sufficient volume to give adequate flood protection during rainfall events and storms. The second objective, the treatment of the stormwater, requires the creation of a littoral zone within the system. The littoral zone, an area of rooted aquatic plants within the lakes or ponds, provide for the natural removal of nutrients flowing into the system. The plants serve as a filtering system whereby some nutrients are processed. The proposed littoral zone in this project constitutes approximately 37 percent of the detention system surface area and therefore exceeds District size requirements. The depth of the treatment volume for the proposed system will not exceed 18 inches. A third objective accomplished by the creation of the series of lakes is the provision for an area where pollutants flowing into the detention system may settle and through sedimentation be removed from the water moving through the system. The average residence time estimated for runoff entering the Sabal Hammocks detention system is 48 days. The permanent pool volume will, therefore, be sufficient to assure the proposed project exceeds the District's requirements related to residence time. The design and volume of the Sabal Hammocks system will also exceed the District's requirements related to the dynamic pool volumes. In this case the Sabal Hammocks system will provide for approximately 65 acre-feet of runoff. Thus, the proposed system will adequately control and detain the first 1 inch of runoff from the site. The length to width ratio for the proposed lakes, 18:1, exceeds the District's minimum criteria (2:1). The final lake or pond into which the stormwater will flow will be 17 acres and will have 15 acres of planted wetland vegetation. Before waters will be released into Bass Lake, the site's runoff will pass through 3100 linear feet of this final lake before being discharged. The proposed project will eliminate the two agricultural pumps and replace them with one pump station. That station will contain four pumps with a total pumping capacity of 96 cubic feet per second. Under anticipated peak times, the rate of discharge from the proposed single station is estimated to be less than the calculated peak pre-development rate of discharge (90-107 c.f.s.). The estimated peak volume of discharge will also be lower than the pre-development discharge volumes for the comparable storm events. The proposed pump station is designed to be operated on electrical power but will have a backup diesel generator to serve in the event of the interruption of electrical service. Additionally, the pumps within the station will be controlled by a switching device that will activate the pump(s) only at designated times. It is unlikely that all four pumps will activate during normal rainfall events. The Applicant intends to relinquish maintenance responsibilities for the stormwater system including the pump station to Brevard County, Florida. Finished floor elevations for all residential structures to be built within the Sabal Hammocks development will be at a minimum of 18.2 mean sea level. This level is above that for a 100 year flood. The floor elevations will be at least one foot above the 100 year flood elevation even in the event of the dike or pump failure or both. Finished road elevations for the project will be set at 17.5 feet mean sea level. This elevation meets or exceeds the County's requirements regarding the construction of roadways. It is estimated that the Sabal Hammocks system will retain at least 26 percent of all storm events on site. If the lake system is utilized to irrigate the golf course the proposed system could retain 45 percent of all storm events on site. Of the 31.27 acres of wetlands within the proposed site, only 4.73 acres of wetlands will be disturbed by the construction of this project. Some of the wetlands are isolated and presently provide minimal benefits to off-site aquatic and wetland dependent species. No threatened or endangered species are currently utilizing the isolated wetlands. The areas of wetlands which are productive and which will be disturbed by the development will be replaced by new wetlands to be created adjacent to their current location at a lower elevation. The new wetlands should provide improved wetland function since those areas will be planted with a greater diversity of wetland plant species. Additionally, other wetland areas will be enhanced by the removal of invader species and increased hydroperiod in the area. The integrated pesticide management plan for the proposed project will be sufficient with the additional condition chat use of Orthene, Subdue, and Tersan LSR will be authorized when approved insecticides or fungicides have not been effective. In this case, the estimates regarding the water quality for the proposed project were based upon data from studies of multifamily residential projects. Data from single family/ golf course developments was not available. Therefore, based upon the data used, the projected runoff concentrations for this project should over estimate pollutants and are more challenging to the treatment system than what is reasonably expected to occur. In this regard, the overall treatment efficiencies are estimated to be good for all of the parameters of concern with the exception of nitrogen. The projected increase in nitrogen, however, will not adversely impact the receiving water body. The projected average concentration for each constituent which may be discharged is less than the state standard with the exceptions of cadmium and zinc. In this regard, the District's proposed conditions (set forth in the District's exhibits 4 and 9) adequately offset the potential for a violation of state water quality standards. More specifically, the use of copper-based algaecides in the stormwater management system should be prohibited; the use of galvanized metal culverts in the stormwater management system, or as driveway culverts, should be prohibited; and the use of organic fertilizers or soil amendments derived from municipal sludge on the golf course should be prohibited. Additionally, a water quality monitoring plan should be implemented by the Applicant. The monitoring plan mandates the collection of water samples from areas in order to adequately monitor the overall effectiveness of the treatment facility. The source of cadmium is not be expected to be as great as projected since the most common source for such discharge is automobiles. It is unlikely that the golf course use will generate the volume of discharge associated with automobile use that the multifamily data presumed. The projected quality of the discharges from this project should be similar to the ambient water quality in Lake Poinsett. In fact, the post- development pollutant loading rates should be better than the pre-development pollutant loading rates. The discharge from the proposed Sabal Hammocks project will not cause or contribute to a violation of state water quality standards in Lake Poinsett nor will the groundwater discharges violate applicable state groundwater quality standards. The floodways and floodplains, and the levels of flood flows or velocities of adjacent water courses will not be altered by the proposed project so as to adversely impact the off- site storage and conveyance capabilities of the water resource. The proposed project will not result in the flow of adjacent water courses to be decreased to cause adverse impacts. The proposed project will not cause hydrologically-related environmental functions to be adversely impacted The proposed project will not endanger life, health, or property. The proposed project will not adversely affect natural resources, fish and wildlife. The proposed project is consistent with the overall objectives of the District.
Recommendation Based upon the foregoing, it is RECOMMENDED: That the governing board of the St. Johns River Water Management District enter a final order approving the application for permit number 4-009-0077AM with the conditions outlined within the District's exhibits numbered 4, 8, and 9 and as previously stated in the notice of intent. DONE and ENTERED this 2 day of July, 1991, in Tallahassee, Leon County, Florida. Joyous D. Parrish Hearing Officer Division of Administrative Hearings The DeSoto Building 1230 Apalachee Parkway Tallahassee, Florida 32301 (904)488-9675 Filed with the Clerk of the Division of Administrative Hearings this 2 day of July, 1991. APPENDIX TO CASE NO. 90-5247 RULINGS ON THE PROPOSED FINDINGS OF FACT SUBMITTED BY THE APPLICANT: Paragraphs 1 through 3 are accepted. Paragraph 4 is rejected as irrelevant. Paragraphs 5 and 6 are accepted. The first sentence of paragraph 7 is accepted the remainder is rejected as irrelevant. Paragraph 8 is accepted. Paragraphs 9 through 11 are accepted. Paragraph 12 is rejected as irrelevant. 8 Paragraphs 13 through 21 are accepted. Paragraph 22 is rejected as irrelevant. Paragraphs 23 through 25 are accepted. The last two sentences of paragraph 26 are accepted, the remainder is rejected as irrelevant. Paragraph 27 is accepted. Paragraph 28 is rejected as comment, irrelevant, or unnecessary to the resolution of the issues of this case. Paragraph 29 is accepted. Paragraph 30 is rejected as irrelevant. Paragraph 31 is rejected as argumentative. Paragraphs 32 and 33 are accepted. With regard to paragraph 34 it is accepted that compensating storage was not required. Otherwise, unnecessary, irrelevant, or comment. With regard to paragraph 35, it is accepted the proposed system meets the first 1 inch of runoff requirement otherwise, unnecessary or irrelevant or comment. Paragraph 36 is accepted. Paragraphs 37 through 41 are rejected as irrelevant, argumentative or comment. Paragraphs 42 and 43 are accepted. With the deletion of the last sentence which is irrelevant, paragraph 44 is accepted. Paragraphs 44 through 49 are accepted. The second sentence of paragraph 50 is accepted, the remainder of the paragraph is rejected as irrelevant or contrary to the weight of the evidence. The first sentence of paragraph 51 is accepted, the remainder is rejected as irrelevant or contrary to the weight of the evidence. Paragraphs 52 through 56 are rejected as irrelevant, comment, or recitation of testimony. Paragraph 57 is accepted. Paragraph 58 is accepted. Paragraphs 59 and 60 are rejected as irrelevant, comment, or argumentative. Paragraphs 61 and 62 are accepted. The first sentence of Paragraph 63 is accepted. The remainder of the Paragraph is rejected as contrary to the weight of the evidence. The proposed project will benefit the wetland areas in an unquanitifiable measure due to the enhancements to prior wetlands and the creation of new wetlands. The first sentence of paragraph 64 is accepted. The remainder is rejected as contrary to the weight of the evidence. Paragraph 65 is accepted. Paragraph 66 is rejected as argument or irrelevant. Paragraph 67 is accepted. Paragraphs 68 and 69 are accepted. Paragraph 70 is rejected as irrelevant or contrary to the weight of the evidence. Paragraphs 71 through 73 are accepted. Paragraph 74 is rejected as irrelevant or unnecessary. Paragraphs 75 through 78 are rejected as argument, irrelevant, or unnecessary to the resolution of the issues of this case. Paragraphs 79 through 82 are accepted. Paragraph 83 is rejected as irrelevant. Paragraphs 84 and 85 are rejected as argument or comment. It is accepted that the Corp and DER are aware of the restoration of the dike and that neither has asserted such work was performed contrary to law. Paragraph 86 is rejected as comment on the evidence or irrelevant. It is accepted that the District advised Applicant that he could restore the dike system and that the District was apprised of the completion of that work. With regard to paragraph 87, it is accepted that the restoration of the dike entailed filling the breaches to conform to the dike's original design; otherwise, rejected as irrelevant. Paragraphs 88 and 89 and the first sentence of Paragraph 90 are accepted. The remainder of paragraph 90 and Paragraphs 91 through 93 are rejected as irrelevant, argument, or comment. Paragraph 94 is accepted. RULINGS ON THE PROPOSED FINDINGS OF FACT SUBMITTED BY THE DISTRICT: Paragraphs 1 through 78 is accepted. Paragraph 79 is rejected as argumentative. Paragraph 80 is accepted. RULINGS ON THE PROPOSED FINDINGS OF FACT SUBMITTED BY SAVE: None submitted. COPIES FURNISHED: Mary D. Hansen 1600 S. Clyde Morris Boulevard Suite 300 Daytona Beach, Florida 32119 Brain D.E. Canter HABEN, CULPEPPER, DUNBAR & FRENCH, P.A. 306 North Monroe Street Tallahassee, Florida 32301 Wayne Flowers Jennifer Burdick St. Johns River Water Management District Post Office Box 1429 Palatka, Florida 32178
Findings Of Fact Petitioner Alexis Crlenjak is the owner of an unimproved lot approximately 90 feet by 230 feet in size which abuts Black Creek in Clay County, Florida. (Testimony of Petitioner, Exhibit 2) By application received by the St. Johns River Subdistrict of the Department of Environmental Regulation on September 9, 1980, Petitioner sought a permit to place approximately 1,000 cubic yards of clean fill dirt over an area of 90 by 130 feet to a depth of 3 feet on the southern portion of his lot. The stated purpose for the request was to enable Petitioner to obtain a county permit to install a septic tank and drainfield in the filled portion of the lot. Such a permit previously had been denied by the county for the reason that inadequate drainage for a septic tank existed in the lot's present natural condition. (Testimony of Petitioner, Exhibit 2) Subsequent to receipt of the application, DER's Subdistrict Office solicited comments or objections to the proposed project from adjacent landowners and various governmental agencies. An adjoining landowner, Frederick G. Flagge, filed an opposition to the concept of placement of a septic tank and drainfield next to his land due to the possibility of seepage and contamination. The United States Environmental Protection Agency, Region IV, expressed the view that placement of fill material in flood plain wetlands to raise the elevation for a septic tank placement is not in the public's interest and recommended denial of the application, and suggested that the applicant utilize the upland portion of his property for such purpose. The Southeast Regional Office of the National Marine Fisheries Service, U.S. Department of Commerce, concluded that the work would adversely impact fishery resources by filling productive wetlands and made a similar recommendation to that of the EPA. A representative of the Department of Interior Fish and Wildlife Service inspected the area in November 1980, and found that the proposed project would destroy 0.27 acres of wetlands which provide nesting, feed and shelter habitat for various species of birds, maimals and reptiles. The agency therefore recommended that any fill be limited to upland areas. The Florida Game and Freshwater Fish Commission reviewed the application and recommended denial because the project would adversely affect fish and wildlife resources by eliminating a protective wetland habitat. (Testimony of Tyler, Exhibit 2) Petitioner's lot is bounded on the north by Black Creek, on the east by a dredged canal which terminates at a boat basin immediately south of his property. A filled driveway separates Petitioner' s land from the Flagge property to the west. Although the area surrounding the north bank of Black Creek is still in a natural condition, Petitioner's and Flagge's lots are practically the only ones on the south bank in that area which are undeveloped and still in a relatively natural state. The northern border of Petitioner's property is high and dry due to the berm along Black Creek which has been deposited over the years and has become vegetated. However, the southern half is a hardwood swamp area where blackgum is the dominant species, together with other species such as buttonbush, water ash, dahoon, willow, water locust, red maple and sweetgum. Black Creek is classified as a Class III body of water under Chapter 17-3, Florida Administrative Code. The type of vegetation on the southern portion of Petitioner's lot is associated with periodic inundation during seasonal rainfall, and is thus deemed to constitute the landward extent of waters of the state pursuant to the vegetative indices of Chapter 17-4, Florida Administrative Code. After receiving the application an environmental specialist in Respondent's subdistrict office visited the site and thereafter prepared a Permit Application Appraisal. He identified the various species of plant life located in the area to be filled and determined that it was properly within Respondent's jurisdiction. His appraisal found that the swamp area in question benefits the water quality of Black Creek by filtering sediments and assimilating pollutants generated by upland runoff. He also found that the area is a fish and wildlife habitat, provides flood control, and serves as a primary food source for fish and wildlife. He therefore determined that the proposed project would result in the elimination of those biological resources that aid in maintaining water quality and would further degrade water quality by adding septic tank waste in close proximity to the waterway. He concluded that the project as proposed would induce flooding on the lot to the West by blocking the flow through the swamp which presently is connected by a culvert under the filled driveway to the west. His supervisor subsequently visited the site and agreed with the application appraisal. It was their combined opinion that filling of the land would eventually lead to eutrophication of the adjacent canal and adversely affect the water quality of Black Creek. At the time of their visits, the DER personnel did not observe standing water on Petitioner's property, but did so on the adjacent lot to the west. (Testimony of Rector, Tyler, Exhibit 2) As a result of the adverse application appraisal, Respondent advised Petitioner on December 9, 1980, of its intent to deny the application based on the loss of submerged land, and anticipated water quality degradation by replacing the aquatic ecosystem with a septic tank and drain ield which has a potential for leaking into the adjacent canal. The Notice of Intent to Deny further specified state water quality standards which would be adversely affected, and found that the applicant had not provided the department with affirmative reasonable assurances that the immediate and long-term impacts of the project would not result in a violation of state water quality standards. (Testimony of Tyler, Exhibit 2) At the hearing, Petitioner scaled down his request by stating that he now only wished to fill an area approximately 25 feet by 40 feet in the southwest corner of his lot to serve as the drainfield for a septic tank. However, the DER personnel who had reviewed the project testified that their recommendation of denial would not be changed in spite of the reduced proposed filling activity. They were of the opinion that the same considerations which led to the denial recommendation would still be present, except on a smaller scale. They indicated that Petitioner could still use his land, in spite of the permit denial, for recreational activities, or by erecting a "stilt" house on the lower half of the lot. However, in such an eventuality, the septic tank and drainfield would have to be placed on the upland portion of the lot. As petitioner pointed out, this cannot take place under current health regulations in view of the fact that a well is located on the north side of the adjacent lot, and the spacing distance would be insufficient for state and county permitting purposes. Although Petitioner denied that a culvert existed under the driveway separating the lots, he conceded that he had not visited the property for about a year. (Testimony of Tyler, petitioner, Exhibit 2)
Recommendation That Petitioner's application be DENIED. DONE and ENTERED this 12th day of August, 1981, in Tallahassee, Florida. THOMAS C. OLDHAM Division of Administrative Hearings The Oakland Building 2009 Apalachee Parkway Tallahassee, Florida 32301 (904) 488-9675 Filed with the Clerk of the Division of Administrative Hearings this 12th day of August, 1981. COPIES FURNISHED: Honorable Victoria J. TSchinkel Secretary, Department of Environmental Regulation 2600 Blair Stone Road Tallahassee, Florida 32301 Silvia Morell Alderman, Esquire Alexis Crlenjak Assistant General Counsel Route 2, Box 618 Department of Environmental Havana, Florida 32333 Regulation 2600 Blair Stone Road Tallahassee, Florida 32301
The Issue Whether the activities conducted on respondent's property required a dredge/fill permit and whether respondent violated the conditions of the permit issued on February 15, 1985.
Findings Of Fact Respondent is the record holder of a parcel of land located within Section 35, Township 45, South, Range 21 East, in Lee County, Florida. Respondent's property is contiguous to Pine Island Sound, a Class II, Outstanding Florida Water. Maureen Powers, an Environmental Specialist with the Department initially inspected respondent's property on May 23, 1984, after the Department received an anonymous complaint that someone was clearing away mangroves on the property. Ms. Powers-discovered that an earthen-fill road had been constructed on the property, and a portion of the road, 24' x 43'; was located within the landward extent of the state's waters. The determination that the portion of the road was within the Department's jurisdiction was based on the dominance of black and white mangroves. There had been recent mangrove cutting in the area, and a pile of vegetative debris, the result of the cutting, had been placed in the jurisdictional wetlands contiguous to Pine Island Sound. On June 1, 1984, Ms. Powers met with respondent in Langley Adair's office to discuss the violations observed on May 23, 1984, and to discuss the resolution of these violations. Respondent agreed to remove all of the earthen fill and vegetative debris that he had deposited within the jurisdictional wetlands. He agreed to refrain from any further work within the jurisdictional area prior to receiving a permit from the department. He also agreed to open up a flow channel in the berm along Pine Island Sound to restore circulation to the area. On July 11, 1984, Ms. Powers conducted an on-site inspection and discovered that the vegetative debris and the fill material had not been removed. Further, it was apparent that respondent's proposed home site, outlined by string and stakes, was submerged and directly connected by water to Pine Island Sound. The water standing on the property covered a portion of the fill area. On August 8, 1984, another inspection was performed, and it was discovered that respondent still had not removed the fill materials. The condition of the property was essentially the same as it had been on July 11, 1984. By letter dated August 20, 1984, respondent was again notified of the violations and reminded that he had agreed on June 1, 1984, to remove the vegetative and earthen fill. Respondent was informed that he needed to remove the fill materials within 30 days of receipt of the letter in order to avoid further enforcement action. On September 5, 1984, Ms. Powers again inspected the property and found that the proposed homesite and a portion of the fill were still submerged, that the water connected directly with Pine Island Sound and the fill materials had not been removed. Also apparent was a flume of milky white water which originated at the toe of the fill and continued into Pine Island Sound. Water samples were taken which revealed that the erosion of the unauthorized fill was resulting in a violation of state surface water quality criteria, specifically, turbidity1 greater than 29 Nephelometric Turbidity Units above natural background. The background sample, taken upstream from the site of the discharge, had a value of 5.2 turbidity units. The water sample taken two feet from the toe of the fill had a value of 69 turbidity units, and the sample from Pine Island Sound waterward of the mangrove fringe had a value of 46 turbidity units. On October 9, 1984, a letter was sent to respondent which pointed out that the earthen and vegetative fill had not been removed and notifying respondent that erosion of the earthen fill into the waters of Pine Island Sound had resulted in violation of surface water quality criteria. Respondent was requested to immediately cease and desist from all unauthorized. activity under the Department's jurisdiction. To clarify the situation, original photos of the site were sent with the letter which showed the earthen fill, the vegetative debris, and the turbid water leaving the site. A diagram of the site was also included to show the location fill materials that were to have been removed. On October 25, 1984, Ms. Powers met with Mr. Decker at the site. Ms. Powers showed respondent the earthen fill and vegetative debris that should have been removed. Ms. Powers noted that the waterward 23' x 24' section of the earthen fill had become heavily colonized by black mangrove seedings and, therefore, excepted that portion of the fill from the removal requirement so that the seedlings would not be disturbed. Mr. Decker stated that he would remove the unauthorized fill within two weeks. Meanwhile, apparently in September, respondent had submitted a permit application. Mr. Beaver was the field inspector assigned by DER to evaluate the application and make a recommendation on the feasibility of the project to the dredge and fill supervisor. On October 8, 1984, Mr. Beaver performed the field inspection at the site, and on October 23, 1984, issued his permit application appraisal recommending that the application be denied. Mr. Beaver recommended that the project be reconsidered for a permit if, among other things, the house site were removed from the landward extent of the state waters and located in the uplands, the septic tank were removed from the low lying portions of the site, and previously cut areas were allowed to regrow in native vegetation. On November 15, 1984, Mr. Beaver met with Mr. Decker and Mr. Cantrell, the district supervisor of dredge and fill, to discuss the project. Mr. Cantrell asked how the project could be modified so that Mr. Decker could have his house in the location where he wanted it. Mr. Beaver suggested a stilt, elevated house with a small fill pad that would allow access to the entrance of the house. The house would have to be elevated -enough so that revegetation of wetland plants could occur underneath the house structure and water flow could be maintained. On November 19, 1984, Ms. Powers and Mr. Beaver met Mr. Decker at the property. Ms. Powers and Mr. Beaver staked the DER jurisdiction line and marked the proposed location of Mr. Decker's boardwalk. Mr. Decker asked about placing wood chip mulch on the wetlands on his property in order to beautify the area. Mr. Decker was informed that wood chip mulch was considered vegetative fill and would require modification of his permit application. Subsequent to the meeting of November 15 and the on- site inspection of November 19, Mr. Decker modified his project. However, wood chip mulch was not mentioned. On December 7, 1984, Mr. Beaver recommended that the application be approved subject to specified conditions, which were ultimately incorporated into the permit. On December 11, 1984, Ms. Powers inspected the site and discovered that a large pile of wood chips had been placed on the northeast end of the fill road waterward of the jurisdiction line. The vegetative debris and earthen fill that had previously been on the project had not been removed. Respondent was notified of the violations by a Cease and Desist letter dated January 4, 1985. The letter pointed out that respondent had been told specifically that wood chip mulch was considered vegetative fill and that dredge/fill permit would be required prior to the placement of any fill material. On February 5, 1984, respondent met with DER, officials to discuss the violations. Mr. Decker stated that the fill had been removed as requested. The Department informed Mr. Decker that an inspection would be performed and, if the fill had not been removed, the Department would pursue formal enforcement action. On February 7, 1985, the site was inspected none of the fill material had been removed. A subsequent inspection on February 20, 1985, revealed that the wood chips had been spread throughout the jurisdictional wetlands. On February 15, 1985, respondent received a permit to fill and to construct a dock and boardwalk. The specific conditions of the permit include the following: 2. A 20' x 16' - 4" fill pad shall be the only fill placed waterward of the jurisdictional line. This fill pad will be composed of clean sand and have the banks stabilized by a riprap revetment with a slope not greater than 2H:1V. * * * The house and all associated structures shall be built upon stilts with concrete footings and/or wooden pilings. On-site turbidity control devices shall be installed and properly maintained to localize turbidity impacts to the construction area. * * * All vegetative debris, trash and spoil material resulting from concrete footing placement shall be removed from the landward extent of State Waters as defined by the jurisdiction line staked by the DER. Upon completion of construction, non- filled areas beneath the stilt house and associated structures shall be returned to original grade if they were altered by construction. Wetland vegetation shall be planted in the previously cleared area and mangroves removed by construction activities shall be replaced on a 2 for 1 basis with 80% survival over a three year period. * * * 11. The project shall comply with applicable State Water Quality Standards, namely: 17-3.051 - Minimum Criteria for All Waters at All Times and All Places. 17-3.061 - Surface Waters: General Criteria 17-3.111 - Criteria - Class II Waters Shellfish Propagation or Harvesting, Surface Waters General Conditions 2 and 5 of the permit provide: 2. This permit is valid only for the specific processes and operation applied for and indicated in the approved drawings or exhibits. Any unauthorized deviation from the approved drawings, exhibits, specifications, or conditions of this permit may constitute grounds for 81' filled area was located within the landward extent of the state waters. 19. Respondent has violated several conditions of the permit issued February 15, 1985. Specific Condition #2 provided that the 20' x 16' fill pad would be "the only fill placed waterward of the jurisdictional line." Instead, respondent filled an area approximately 78' x 81' to an average height of about 2\', totaling approximately 585 cubic yards of fill. The fill was non-native fill brought onto the site. The permit did not authorize fill for a septic tank in the revocation and enforcement action by the department. 5. This permit does not relieve the permittee from liability for harm or injury to human health or welfare, animal, plant or aquatic life or property and penalties therefor caused by the construction or operation of this permitted source, nor does it allow the permittee to cause pollution in contravention of Florida Statutes and department rules, unless specifically authorized by an order from the department. On March 19, 1985, an inspection of the property revealed that Mr. Decker had totally ignored the conditions of his permit. Rather than a fill pad of 20' x 16', respondent had filled an area approximately 78' x 81'.2 The fill was unstabilized, and no turbidity control devices were in place. Fill material had been used to construct a earthen berm across a natural flow channel, blocking the flow of water onto the property. Further, the vegetative debris resulting from the construction of the boardwalk had been deposited in the mangrove wetlands. On March 22, 1985, a Notice of Violation and. Orders for Corrective Action was sent to the respondent. Respondent received the notice on or about March 26, 1985. The landward extent of the state waters on respondent's property, the area in which a DER permit is required for dredging and filing, was determined by the presence of red mangroves (Rhizophora mangle), black mangroves (Avicennia germinans), and saltwort (Basis maritime) as the dominant species. The jurisdiction line was originally staked on November 19, 1984, and was reestablished on April 23, 1985, from remaining landmarks, due to the original markers being removed. The 78' x81' filled area was located within the landward extent of the state waters. Respondent has violated several conditions of the permit issued February 15, 1985. Specific Condition #2 provided that the 20' x 16' fill pad would be "the only fill placed waterward of the jurisdictional line." Instead, respondent filled an area approximately 78' x 81' to an average height of about 21/2', totaling approximately 585 cubic yards of fill. The fill was non-native fill brought onto the site. The permit did not authorize fill for a septic tank in the jurisdictional wetlands, but respondent placed a septic tank and drainfield in that area.3 By filling an area several times the size of the area authorized, respondent has seriously violated the conditions of the permit. A fill area of the size that now exists eliminates the habitat and water quality functions that the area historically performed. Respondent has violated Specific Condition #4, which required that the house and associated structures be built on stilts. The purpose of such a requirement is to preserve undisturbed the existing substrate, which constitutes the base of the food chain, and to allow for a free flow of water across the site, which is essential to the health of the mangrove system. Respondent not only filled an area larger than his proposed house, he poured a solid, continuous, concrete foundation on top of the fill, which would prevent the flow of water should the water rise high enough to come onto the filled area.4 By filling the area, destroying the substrate, and preventing the flow of water into the area, respondent has violated Specific Condition #4 of the permit. Respondent violated Specific Condition #5 of his permit in that respondent failed to install any turbidity control devices. Turbidity control devices of some sort are necessary in a fill area such as the one in this case. Turbidity screens or staked hay bales could have been used. Respondent also violated Specific Condition #8. Construction debris and vegetative debris were located throughout the area. Although respondent technically has not violated Specific Condition #9, in that it requires acts to be performed "upon completion of construction", respondent has made compliance with that provision an impossibility because he has filled the "non- filled areas beneath the stilt house" and therefore there are no "non-filled areas" to return to original grade. Respondent has never requested that his permit conditions and requirements be modified. By his actions, respondent has repeatedly shown a complete disregard for the requirements of the law, and he has totally ignored the conditions set forth in the permit. Mr. Decker was not qualified as an expert and I did not find him to be a credible witness. The reasonable costs and expenses incurred by the Department in relation to the enforcement aspects of this action are $866.17. These costs and expenses were incurred by the Department in its effort to control and abate pollutants and to restore the waters and property of the state to their former condition.
Recommendation Based on the foregoing Findings of Fact and Conclusions of Law, it is RECOMMENDED that the respondent's permit, number 360902245, be revoked that the respondent be ordered to make payment to the Department in the amount of $866.17 for costs and expenses incurred by the state and that the following corrective action be ordered: Respondent shall within thirty (30) days, remove all unauthorized fill material placed within the area of Department jurisdiction. Prior to initiating the fill removal respondent shall arrange for Department personnel to stake the area to be restored. All areas shall be restored to the elevation and soil conditions which existed prior to the placement of fill material. Respondent shall take all necessary precautions to ensure that state water quality standards are not violated during the restoration work. Respondent shall not disturb adjacent areas within the jurisdiction of the Department unless approved by the Department in writing. DONE and ENTERED this a 24th day of January, 1986, in Tallahassee, Leon County, Florida. DIANE A. GRUBBS Hearing Officer Division of Administrative Hearings The Oakland Building 2009 Apalachee Parkway Tallahassee, Florida 32301 (904) 488-9675 FILED with the Clerk of the Division of Administrative Hearings this 24th day of January, 1986.
Findings Of Fact The Parties The Applicant, Trail Ridge Landfill, Inc. (Trail Ridge), is a corporation formed in 1989 for the purpose of developing a landfill project and providing waste disposal capacity for the City of Jacksonville. Trail Ridge Landfill, Inc. is a wholly-owned subsidiary of Waste Management of North America, Inc. Its operating division is involved in the waste collection, recycling and disposal business. Waste Management of North America, Inc. is a wholly-owned subsidiary of Waste Management, Inc., which is involved in all facets of solid waste collection and disposal nationally. The Florida Department of Environmental Regulation (DER) is an agency of the State of Florida charged with the responsibility of regulating solid waste management facilities and with permitting their initial construction and operation. It is charged with reviewing applications for permits for construction of such facilities, for reviewing applications for dredge and fill permits in wetlands or waters of the State and, as pertinent to the project involved in this proceeding, for storm water management and storage of surface water and the regulation thereof through its permitting and enforcement authority contained in Chapters 403 and 373, Florida Statutes, and Titles 40C and 17, Florida Administrative Code. The Petitioners are Coastal Environmental Society, Inc. (CESI), a not- for-profit Florida corporation established for the purpose of protecting natural resources. St. Johns Preservation Association, Inc. (SJPA), also a not-for- profit Florida corporation established for the purpose of protecting the community, including environmental concerns; Baldwin-Maxville Coalition, Inc., also a not-for-profit corporation established to promote the health and welfare of its community, including environmental concerns; William McCranie, a resident of Jacksonville, Florida; Darryl Sperry, a resident and citizen who lives 1 1/4 miles from the proposed landfill site in Baker County. All Petitioners have been established to be substantially affected by the proposed permitting and the projects related thereto and all have met pertinent standing requirements as a matter of fact and law. The Respondents do not contest the standing of the Petitioners. Background and Purpose of the Project The purpose of the proposed landfill facility is to address the solid waste disposal needs of the City of Jacksonville and Duval County (the City). The City currently disposes of solid waste at two landfills. One is on the east side of Jacksonville on Gervin Road, and the other is located in the north area of Jacksonville on Island Road. The presently used, east landfill is an unlined landfill currently operated pursuant to a DER Consent Order, in connection with which closure of that landfill is planned. The north landfill consists of three unlined cells and one lined cell. The City currently has unused landfill capacity at these two landfills which will last approximately one more year, but has also sought approval for expansion of the north landfill which would provide about two more additional years of capacity, if approved. The proposed landfill project, if approved, constructed and operated, would meet these solid waste disposal needs for approximately 20 to 25 years. The project at hand began when the City issued a Request For Proposal for private companies to submit bids to the City for construction of additional landfill capacity somewhere to the northwest of Jacksonville in Duval County. Two companies that met qualifying requirements submitted proposals in response to the request for proposals. Trail Ridge was one of those two qualifying bidders. The City selected the Applicant for contract award and then entered into a contract. The Applicant has an option to purchase the proposed landfill site from Gilman Timber and Land Company (Gilman, Gilman Paper Company). After issuance of the permits to the Applicant, the option would be exercised. Thereafter the property would be immediately conveyed to the City from the Applicant. Thus the site of the proposed facility will ultimately be owned and controlled by the City, although the Applicant will operate the landfill under its contract with the City. Gilman presently uses the 1,288 acre site and several thousand surrounding acres for growing timber, principally pine trees, in a pine plantation-type operation grown for use as pulp wood. Much of the site and surrounding Gilman land is characterized by pine trees grown to an age of 20 years or less and then harvested. A great deal of the site property has recently been cut, chopped, plowed re-bedded and re-planted with pine trees. Although some of the site is characterized by mature timber, much of the timber has been recently planted or is otherwise timber not yet mature enough for harvest. The option agreement provides that Trail Ridge will purchase the property from Gilman for $10,000 per acre. The City will then purchase the 1,288 acres from the Applicant for $2,600 per acre, which the Applicant maintains is the current, fair-market-value for the land as it is currently used as pine plantation for growing pulp wood. These terms and conditions are a part of the City's Request For Proposals. In addition to paying the Applicant $2,600 per acre for the 1,288 acre site, the City will pay the Applicant a fee over the life of the operation of the proposed landfill. The fee, amortized over the 20- year span of the agreement, will make up the difference between the Applicant's $10,000 per acre purchase price paid to Gilman and the City's $2,600 per acre initial purchase price paid to the Applicant. The City will thus ultimately re- pay Trail Ridge the $10,000 per acre for the purchase price for the property. The Applicant corporation will operate the landfill over its entire useful life and then close it. Thus, the Applicant's own figures show the land is valued at $3,348,800. The record does not reflect the reason for the purchase price paid to Gilman being $12,880,000, of which the City will repay $9,000,000 to the Applicant in the form of the operation fee, over and above the initial payment to the Applicant of $3,348,800. In any event, the utilities payment to the Applicant of the $12,880,000 for the land and the operation of the landfill only represents the recompense to the Applicant for the purchase funds expended for it to buy the site from Gilman. Additionally, the Applicant, through its option agreement with Gilman, is required to pay Gilman a $60,000 per month option fee. $15,000 per month of that must be paid during the pendency of the option, with the remainder of the $45,000 monthly fees due upon closing of the purchase. The portion of the operation fee paid by the City over and above the $2,600 per acre initial purchase price, attributable to the land appraisal itself, will be paid by the City on the basis of a certain dollar fee-per-ton of solid waste handled and disposed of in the landfill by the Applicant. Testimony indicates this will be approximately $8.00-$15.09 per ton, although the evidence as to which amount is indefinite. The testimony of Applicant's witness Allen, in any event, references these amounts as applicable to the City's solid waste "stream" handled by Trail Ridge at the proposed facility. Its contact with the City assures the Applicant of a minimum of 569,000 tons of waste per year to which the fee would apply. The City currently generates approximately 750,000 tons of waste per year. There is no evidence of what the construction or other capital costs or operation expenses related to the proposed facility will be over the useful life of the facility for the Applicant or related corporations. Site and Design The proposed site is 1,288 acres in size, located in southwestern Duval County, approximately three miles south of Interstate Highway 10, 1.5 miles west of U.S. Highway 301 and 1.14 miles north of State Road 228. The site is located in a sparsely populated area approximately 4 to 6 miles from the City of Baldwin, 5 miles from the City of Macclenny and 2 miles from the City of Maxville. A substantial portion of the proposed site will be left undisturbed and used as a buffer area to separate it from any surrounding development. There are water supply wells within fairly close proximity to the site. One well is within a mile of the site and three are approximately 1.5 miles southeast of the site. The proposed facility will include both a Class I and Class III solid waste disposal area. The Class I area will be approximately 148 acres in size, and the Class III area, 28 acres. The Class III disposal area will only be used for non- household refuse such as construction debris, tree and shrubbery clippings and the like, which will not generate deleterious substances in liquid or gaseous form, as will the Class I landfill. The remainder of the 1,288 acres will be used for buffer zones, dirt borrow areas, storm water management facilities and ancillary facilities necessary to the day to day operation of the landfill. No part of the Class III disposal area will be located within 200 feet of jurisdictional wetlands, which are the closest bodies of water. The project will be located on "Trail Ridge," which is a relatively elevated geographic feature, extending generally in a north-south direction in western Duval County. Geologically, it is an ancient sand dune. There is a substantial decline in elevation of this portion of the ridge from west to east, which produces surface water drainage patterns in a west to east direction at the site, also accompanied by surface water drainage patterns in a southerly- northerly direction into wetlands which occur on the south and north verge of the site, because the site is a prong or easterly extension of Trail Ridge lying between wetlands which occur on the northerly, southerly and easterly boundaries of the Class I disposal site. The 1,288 acres, including the landfill sites themselves, have been used for silvi-culture practices since 1948 or earlier, and are currently managed primarily as a slash pine plantation grown for pulp wood purposes. The present owner of the site, Gilman Paper Company, plans to continue this use of the site should the landfill project not be approved and constructed. Since 1948, the entire site, including much of the wetlands thereon, have been logged, some portions of it as many as three times. The silvi-culture practices at the site include clear- cutting, chopping, burning, harrowing, tilling and bedding of the soil, and planting of pine trees. The pine trees are grown to be harvested on a 20-year cycle or less. Due to these intensive silvi-cultural practices, the natural conditions of the site have been significantly altered and much natural vegetation, such as bottom-land hardwoods, has been replaced by planted pine trees. The area has been extensively ditched for drainage purposes and logging roads have been constructed throughout the site. The design of the Class I disposal area of the landfill includes three major components: a liner system, which includes a permanent leachate collection and removal system, a cap and closure system and a gas control system. The Class I disposal area is designed to be 140 feet high when the landfill is completed and closed in approximately 20-25 years. It will have typical landfill refuse "lifts," of approximately 8 to 12 feet in height, with a side slope grade of three horizontal feet to one vertical foot of elevation gain. This is the maximum grade steepness allowed by DER rules. The Class III landfill, in which no household garbage, chemicals, oils and greases or other deleterious substances will be deposited, will include only a cap and closure system. In order to carry out Department regulatory requirements designed to contain waste permanently in a well- defined area and to minimize the amount of leachate produced within a landfill, as well as to collect and remove leachate that is produced, the landfill will have, in effect, a double liner system. The liner system is designed to contain the leachate produced when rain water contacts waste in the landfill and to cause that leachate to percolate vertically downward through the landfill, capture it in the liner system, prevent it from contacting groundwater and to remove it and treat it. Leachate from the Class I disposal area will be contained by the liner system and removed by a leachate collection and removal system. The liner system, starting from the bottom and proceeding upward, will consist of a 6 inch thick layer of compacted, subgrade soil. Over that layer, a prefabricated "bentonite" clay-like material will be deposited. Directly over the bentonite layer will be a high density polyethylene liner (the secondary liner) called a "geomembrane." The bentonite material has the characteristic of swelling when contacted by a liquid so that, if the geomembrane leaks, the bentonite will swell and plug the hole in the liner above it. On top of the bentonite layer and the geomembrane layer, is a synthetic drainage material called "geonet." Geonet has a very high transmissivity rate and therefore has great capacity to conduct water within its own plane. Lying immediately above the geonet material is a geotextile filter designed to keep sand out of the pores or interstices of the geonet. Above that geotextile filter is a second geomembrane (the primary liner). Above the second geomembrane is another geonet layer, as well as another geotextile filter layer. Then to protect the entire liner system from damage, two feet of clean sand will be placed above the uppermost geotextile filter layer. The two feet of sand also acts as a drainage layer for the uppermost geonet. The leachate that percolates down through the waste and the sand will contact the geonet and then be carried down slope on top of the geomembrane. This constitutes the leachate collection system. The bottom geonet is called the "leak detection system." This is because, if a hole develops in the primary liner, any leachate coming through the hole will be quickly drained away through the bottom geonet. The bottom geonet thus operates as a backup leachate collection system, since any leachate reaching the bottom geonet will also be discharged into the leachate removal system. If a leak should develop in the secondary liner, the bentonite material would quickly plug the leak, swelling and absorbing that liquid. The Petitioners have stipulated that the Applicant has proposed a liner system and leachate collection system for the Class I disposal area which meets all criteria of Chapter 17-701, Florida Administrative Code, except as to the requirements of Rule 17-701.050(5)(c), (e)3. and 4. and (f)3., Florida Administrative Code. The Applicant demonstrated that the liner system and leachate collection system will meet the criteria of Rule 17- 701.050(5)(c), Florida Administrative Code. The liner system will be installed in accordance with a quality assurance plan. A specific condition already agreed upon will require the Applicant to submit for approval a revised quality control and assurance plan for installing the Class I synthetic liner system, after selection of the liner manufacturer and prior to the liner's installation. The liner system is designed so that it will be protected from puncture by waste materials or landfill operation equipment. In addition to the two feet of sand placed on top of the entire liner system to protect it, when initial waste disposal begins, the first lift of waste across the entire area of the liner system, as it is installed in phases, will be composed of 6-8 feet of "select waste" to protect the liner from puncture. Select waste is waste containing no pipes, roots or other potentially puncturing objects which could penetrate the sand layer to damage the liner system. A quality assurance engineer will be on site full-time supervising the initial placement of the select waste until that phase of the landfill operation is completed. A grant of the permit should be so conditioned. The Applicant has established that the liner system and leachate collection system will meet the criteria of Rule 17-701.050(5)(e), Florida Administrative Code. The leachate depth on top of the primary and secondary liners will not exceed a foot because the geonet has the capacity to quickly remove leachate from the liner. The actual hydraulic head of leachate on the primary liner will be only approximately 1/4 inch. The depth on the secondary liner was shown to be even less. The liner system and leachate collection system will meet the criteria of Rule 17-701.050(5)(e)3. and (f)3., Florida Administrative Code. The design of the collection system, including the geotextile filter, will prevent clogging of the system throughout the active life and closure period of the landfill, primarily by placing a gravel aggregate around the collection pipe so as to prevent debris from entering the system. A pilot line will also be installed in each collection pipe to facilitate access for mechanical cleaning, should it be necessary. In the unlikely event of an obstruction in the system, the leachate would simply bypass that area and continue down-grade to the next downstream leachate collection pipe and be removed from the landfill for treatment by that means. The liner system and leachate collection system will also meet the criteria of Rule 17-701.050(5)(e)4., Florida Administrative Code. The leachate collected will be carried downhill to pipes at the east end of the landfill. The leachate will then be pumped from the pipes into storage tanks. Trucks will then be filled with leachate to be transported to the City's Buckman Regional Wastewater Treatment Plant, owned and operated by the City, for treatment and disposal. Unrefuted evidence shows that this plant has adequate capacity and treatment capability to safely treat and handle the leachate. The truck loading areas will be equipped with berms and other means of protecting the surrounding wetlands, surface and groundwaters from leachate spills during the truck filling process. The Applicant's evidence does not demonstrate, however, that the tanks themselves and the area surrounding them will have protective measures for containing leachate spills. In order to comply with the above rule, the totality of the evidence concerning the leachate collection, disposal system and treatment method demonstrates that the tanks should be accompanied by a surrounding containment system (walls or berms) which will have the capability of containing the entire capacity of a tank should failure of a leachate collection tank or related piping or valving occur. Any grant of the permit should be so conditioned. The Petitioners have stipulated, and the Department agrees, that the Class III disposal area is exempt from the liner system and leachate collection system requirements of the above-cited rule provisions. Covering and Closure System Both the Class I and Class III landfills are designed with a composite soil covering system to minimize the amount of rainfall which can come into contact with the solid waste so as to minimize the creation of leachate. During the day to day landfill operations, a 6 inch initial cover will be applied to enclose each Class I landfill disposal cell on a daily basis, except for the working face itself, where waste is currently being deposited. The working face may be left uncovered, so long as solid waste is scheduled to be placed on it within an 18 hour period. A 6 inch initial cover will also be applied once every week to enclose each Class III landfill disposal cell. Thereafter, an intermediate cover of one foot of compacted earth will be applied on top of the initial cover within seven days of initial completion, if a final cover or additional lift on top of that completed cell is not to be applied within 180 days of cell completion. The initial cover will consist of sandy soil, over which will come the intermediate cover of one foot of compacted earth. The final cover will be applied to those portions of the landfill which have been filled with waste to the extent of designed dimensions at the time those portions have been filled. The final cover, to be placed on the sides of the landfill and ultimately upon the top at the end of its useful life, will be placed on top of the 12 inches of intermediate soil layer and will consist of 12 inches of compacted clay with a permeability of 1 X 10/-7 cm/sec. Next will come a layer of 12 inches of compacted soil and then a final layer of 12 inches of top soil, upon which the Applicant will plant grass for erosion control. Erosion of the cover layers on the side slopes is designed to be minimized by closing areas of the landfill as they are filled, an operational procedure commonly referred to as "close as you go." The final cover layers placed on the landfill outside of the clay cap are designed to allow the establishment of a planted grass cover as soon as possible to minimize erosion of the cover material and the side slopes. In addition, the intermediate cover placed on top of and between each cell, beneath the clay layer surrounding the outside perimeter of the landfill, has a high permeability, thereby acting as a drainage layer to direct rainfall and leachate vertically downward to the leachate collection system, as well as to collect runoff so as to retard erosion. Erosion is also retarded, as is the runoff of storm water/leachate over the side slopes of the landfill, by containing storm water which comes into contact with the working face of the landfill cells. This will be accomplished by minimizing the size of the working face to approximately 42 feet width. This will serve to reduce the potential for storm water to contact waste. Additionally, berms will be constructed around the working faces of each active cell which will cause any runoff or storm water which gets inside the working face of the cell to remain there and to percolate through the land fill to eventually be collected as leachate by the collection system. If enough rain falls on the working face of a cell to cause an overflow of storm water over the berms, additional berms placed on the interior slopes of the landfill will catch the overflow and divert it back through the landfill and the leachate collection system. The Applicant contends that normal maintenance equipment and personnel will be able to maintain the exterior side slopes of the landfill and thus minimize erosion. However, if erosion should become a problem, the Applicant proposes to install interceptor berms constructed on the side slopes, accompanied by various geotextural fabrics or synthetic materials proposed to be imbedded on the side slopes to help anchor the interceptor berms. These berms, however, have been demonstrated by Petitioner's witness, Mr. Peavy, to be inadequate to retard erosion. In fact, they may promote erosion because they would be insufficiently anchored to the side slope (as designed with 3:1 slope) and the downhill slope of the berms themselves is considerably steeper than a 3:1 ratio, which will actually promote erosion. The erosion problem will be discussed in further detail infra, but the proposed "optional" berm system, consisting of two proposed berms down the length of the 450 foot side slope will have to be redesigned in order to serve the purpose of retarding side slope erosion. The cap or cover for the exterior side slopes of the landfill will consist of a relatively impermeable clay layer overlain by a sand layer, as well as a top soil layer. Mr. Lithman, an expert in geotechnical engineering testifying for the Applicant, established that as a result of the side slope stability analysis he conducted of the clay layer for the Class I disposal area, that the clay layer would be stable, with a safety factor of 2.9-3, which is more than adequate for a slope as designed for the Class I disposal area (3:1). Mr. Evander Peavy, testifying for the Petitioners and accepted as an expert witness in the fields of civil engineering, soil mechanics, surface water hydrology and hydraulics, agreed that there was an adequate safety factor in the clay cap layer itself and that no plane of failure would likely occur in that layer. The problem, however, lies in the sand layer immediately predetermined or potential plane of failure will occur at the interface between the sand layer and clay layer. This is where the side slope of the landfill is most likely to fail. Failure means that the weight of the sand and soil layers on the outside of the clay layer would exceed the resisting forces, holding them back on the slope of the landfill, which would result in a deformation, slumping or break in the sand layer. If this slumping or break occurs in the sand layer and is not immediately repaired, rain water can erode the clay layer, which is highly erodible if exposed to rainfall. If not redressed soon, this could result in exposure of the waste of the landfill to rain water with the result that leachate could seep out of the side slopes of the landfill and enter surface waters of the State through the functioning of the storm water system. The most likely layers a civil engineer would analyze to determine the stability of the side slope would be the sand and soil layers above the clay layer because they are the weaker layers in terms of adhesion, shearing and resistance to downward movement under stress. However, Mr. Lithman, Trail Ridge's expert who conducted a side-slope stability analysis, only analyzed failure in the clay layer initially, until he was called on rebuttal to address findings of Mr. Peavy. The DER rule provision that allows 3:1 ratio side slopes for the sides of such landfills only serves as a guideline or maximum steepness criteria for design engineers. It does not relieve an engineer from analyzing slope stability in accord with good engineering practices. Analyzing side slope stability must be done in terms of establishing "safety factors." An acceptable safety factor for a landfill is 1.5 because, if failure occurs, solid waste can quickly be uncovered which can cause leachate contamination to surface waters of the State. A safety factor of 1.5 is the commonly accepted factor for earthen dam design because of the risks posed by failure of such slopes or embankments. Mr. Peavy is extensively experienced in the design of earthen dams and similar earth works, including extensive analysis of slope constituents and design for stability under shear forces and other failure-inducing factors, as well as for resistance to erosive forces. He was engaged in such phases of engineering work for approximately 26 years, during which period he designed and oversaw construction of numerous dams, revetments and other earthen embankments and works of many types. Because of this, and because of the commonly accepted engineering methods and calculations he used in analyzing the stability and integrity of the side slopes of the landfill, involving plane of failure analysis and erosion damage analysis, his testimony is credited over that of the other witnesses testifying on the subject matters involving side slope integrity of the landfill. Because of this, a safety factor was established for the side slopes of the landfill, for the sand and soil layers of 1.5. Safety factors of 1.25 are indeed commonly used for highway embankments, but highway embankments are not designed with predetermined or potential planes of failure, such as is involved at this landfill (as presently designed) between the sand-soil layers and the clay layer. Trail Ridge's expert witness in this area, Mr. Lithman, had testified that a safety factor of 1.25 would be adequate because it was typical of DOT earthen embankments for roadways. Mr. Niehoff testified that a 1.3 safety factor was sufficient. In fact, however, Mr. Peavy, testifying for the Petitioners, calculated the safety factor of the side slopes of the landfill to actually be 0.85, using his initial assumption of a weight for a cubic foot of the sand-soil layer of approximately 100 pounds. Mr. Niehoff testifying for Trail Ridge found no basic fault with Mr. Peavy's analysis of the safety factor and alleged that his analysis was done with accepted engineering procedures, but only with use of slightly different assumptions. He testified that if he had used the same assumptions as Mr. Peavy, he would have reached the same conclusions. Mr. Peavy also calculated his safety factor again by employing the same equation used by Trail Ridge's expert, Mr. Lithman, and assumed instead that the unit of sand-soil layers was 125 pounds per cubic foot, as did Mr. Lithman. This assumption coupled with the internal angle of friction of 35 degrees used by Mr. Peavy, which was shown to be a conservative assumption, resulted in a calculated safety factor of 1.05, which is still unacceptable, even under Mr. Lithman's analysis, because Mr. Lithman opined that the safety factor should be 1.25. Using Mr. Peavy's equation, but his own assumptions as to angle of friction and weight per cubic foot of the sand-soil layer, Mr. Niehoff, testifying for the Applicant, calculated a safety factor of 1.3. This safety factor also is unacceptable because it is less than the 1.5 safety factor established as proper by Mr. Peavy's testimony and, indeed, if Mr. Lithman's safety factor of 1.25 could be deemed acceptable, the 1.3 figure would result only in a marginal safety factor at best. The major difference between the safety factor calculations of Mr. Peavy and Mr. Niehoff is that Mr. Peavy assumed that the sand-soil layer above the clay layer would be saturated, while Mr. Niehoff assumed that only 19 inches of the 24 inch sand-soil cover layer would be saturated by rainfall. However, Trail Ridge's own experts, Mr. Lithman and Mr. Niehoff, offered conflicting testimony between themselves on the amount of saturation to be expected. Like Mr. Peavy, Mr. Lithman did his analysis on the basis that the sand-soil layers would be saturated completely, contrary to Mr. Niehoff's subsequent testimony that this would not happen beyond a 19 inch depth in the layer. Mr. Niehoff's conclusions that the sand-soil layer would not become saturated or valid only if there is a complete grass cover over the entire side slopes of the landfill. He admitted that if the sand-soil layer became saturated, the safety factor would only be 1.1 or less according to his own calculations. Trail Ridge offered no preponderant evidence to establish that an adequate grass cover could be established so as to prevent saturation of the sand-soil layer during the design 25-year, 24-hour storm event (approximately 8- 9 inches rainfall in 24 hours). The evidence indicates, rather, that establishing and maintaining a grass cover on the side slopes of the landfill will be very difficult to achieve on a uniform, completely grassed basis. This is because of erosion and because of the damage by equipment necessary to repeatedly repair erosion damage and because of the fact that much of the side slopes of the landfill will be, in effect, under construction until the landfill is completely built out and completed at the end of approximately 20 years. Even if the lower several lifts of the landfill, when covered on the "cover as you go" basis can achieve them, more recently deposited, will not have a complete grass cover. Thus, there is a substantial likelihood of saturation of the sand-soil layer, during storm events of the type for which the landfill is designed. Further, the volume of water that would saturate into the sand-soil layer, even if the landfill was completely grassed, will still be sufficient to totally saturate the lower 90 feet of the landfill side slopes above the clay layer in the event of a 25-year, 24-hour storm event. If the sand-soil layers become saturated, sloughing or failure of those layers will occur at the toe of the landfill. If that occurs, then the clay layer, protective cap can be quickly eroded by subsequent rainfall and surface runoff. This will cause the waste within the landfill to be exposed to rainfall, generating leachate which can migrate to the surface of the landfill and thence to the storm water system and ultimately to the surface waters of the State. No provisions have been made in the design to remove water from the sand-soil layers once it reaches the area near the toe of the landfill to prevent sand-soil layer failure. The impermeability of the clay layer would prevent the rainfall from migrating through the clay layer and continuing to the interior bottom of the landfill to be collected properly as leachate because the clay layer properly should be an impermeable barrier to storm water. Thus, a saturated condition of the sand-soil layers would be most likely to cause their sloughing and failure near the toe of the landfill, with resulting damage by erosion or cracking to the clay layer with the effect of allowing leachate to escape to surface waters of the State. Although the Applicant's expert, Mr. Lithman, opined that side slope stability had not been a problem with the 3:1 ratio slopes at the City's Rosemary Hill Landfill, he admittedly was unaware of the height or length of the side slopes of that landfill. The longer the side slopes and the higher the landfill, the more likely it is that the sand-soil layers will become saturated and fail during design storm events or shortly thereafter, especially as the landfill, in its later years is built both longer and higher toward its final configuration. Further, Mr. Lithman and the Applicant's evidence does not reveal the composition of the side slopes of the Rosemary Hill Landfill, in terms of whether or not the clay and sand-soil layers designed in the proposed landfill are present. Due to the height of the proposed landfill, the lengths of its side slopes and the absence of design features such as terraces and benches, failure of the side slopes, especially in the later years of the landfill's life and, indeed, after closure (closed landfills can generate leachate) is likely to occur, based upon the facts established through Mr. Peavy's testimony. The likely side slope failure is a result of the design flaw and is not a problem which can be cured by normal operation and maintenance activities. Indeed those activities may aggravate the problem through their deleterious effect on the establishment of a uniform, complete grass cover. Because of the height of the proposed landfill, the length and slopes of its sides and the lack of design features such as benches or terraces, it is likely to experience significant side slope erosion due to storm water. The volume of rain water that would accumulate and flow down the sides of the landfill will achieve velocities which would destroy even a well established grass cover, especially in the later years of the landfill's life when the sides have reached significant length and height. Storm water would thus gain sufficient velocity to destroy a grass cover and to particularly attack those portions where the grass cover is incomplete, thinned or possessed of an insufficient root mat to hold the soil. Once erosion starts, small rills will form which will soon develop into deeper gullies, ultimately penetrating the sand-soil layer. It can then quickly erode away the resulting exposed clay cap layer, exposing the waste to storm water. Leachate could thus leak from the landfill. Because of the present design of the Class I landfill, the only way to repair erosion damage is to push material from the bottom with heavy machinery, such as bulldozers. These erosion maintenance activities themselves would prevent the establishment of a uniform solid grass cover. The presently operated East Landfill in Duval County exhibits both side slope failure and erosion damage due to rainfall on its 3:1 slopes, including damage to the grass cover. Erosion damage to the slope layers due to erosion maintenance activities of the type which would be necessary to repair damage at the proposed landfill has occurred. Both erosion and side slope failure will ultimately result in exposure of solid waste to rainfall runoff and assure side slope seepage of leachate. The material eroded or sloughed away from the side slopes can obstruct the drainage conveyance system surrounding the landfill, rendering the MSSW/storm water system inoperative. Because of the presently proposed design of the landfill, it would be impossible to effectively correct side slope erosion or failure, due especially to maintenance activities. Even if a uniform grass cover could be established in the last years of landfill operation and after closure, the great length and slope of sides of the landfill by that time would result in erosion even if the grass cover were initially uniform and solid on the entire slope of the landfill. A change in the design of the landfill, however, whereby 15 foot wide benches or terraces would be incorporated into the sides of the landfill every 20 or so vertical feet, would likely prevent the side slope erosion and failure established to be likely by Mr. Peavy. In fact, benches or terraces similar to those found to be required by Mr. Peavy have had to be recently installed at the East Landfill in Duval County in order to resolve side slope erosion and failure problems on those 3:1 slopes. The mere installation of interceptor berms, as depicted in TRL Exhibit 28, would not alleviate side slope failure and erosion problems, but rather would aggravate them and would reduce the safety factor of the side slopes to 0.5. Consequently, in order to grant the permit, it should be conditioned on the landfill being re-designed and constructed so as to incorporate benches or terraces at approximately 20 foot intervals on the slope of the landfill from bottom to top. Although this may potentially reduce the volume of space within the landfill, depending on how it is accomplished, it has been established that, without the use of the bench or terrace system, pollutant leachate cannot be reasonably assured to be prevented from entering State waters and wetlands. Leachate Control Leachate is any water coming in contact with solid waste. The chemical constituents of leachate which are present and will be present in the Duval County solid waste stream, to be disposed of at the proposed landfill, include chlorobenzene, volatile organics of various types, benzene, acetone, phenolic compounds, gasoline constituents, chloroform, methylethylketone, methylene chloride, toluene, xylene, ethylbenzene, total organic carbon, nitrogen, phosphorus and metals such as aluminum, chromium and zinc. Leachate thus contains toxic, hazardous and priority pollutants which will be disposed of in the landfill. The breakdown and degradation of solid waste can also generate additional toxic or hazardous compounds and substances. Leachate can potentially be discharged in a proposed landfill into groundwater and surface waters in a number of ways, including leakage from the bottom of the landfill liner into groundwaters, including into the Class I storm water pond and surface waters of the State through discharge from the groundwater into the storm water pond system. It could also be deposited into the storm water system through spillage of leachate where tanker trucks are loaded, through seepage of leachate through the side slopes of the proposed landfill by damage to the integrity of those side slopes as found above. The Petitioners maintain that side slope seepage of leachate will occur because the permeability of the intermediate cover layers surrounding the cells of the landfill is significantly less than the permeability of solid waste. This will have the result, according to Petitioners, that leachate will migrate horizontally through the intermediate cover layers to the sides of the landfill. Once there it arguably would migrate to the surface of the landfill side slopes through erosion of the outer cover, and fissures in the clay due to drying from exposure to the sun and through erosion. Additionally, the Petitioners maintain that leachate will migrate downward through the peripheral intermediate cover layer under the clay and contact the impermeable clay anchor cap, build up hydraulic head pressure and thus seep out through landfill sides near the toe of the landfill. The Petitioners maintain that Trail Ridge's policy and proposal to punch holes in the intermediate cover layers atop the cells of the landfill to encourage downward migration of leachate and discourage horizontal migration of leachate through the intermediate cover layers will be ineffective because the intermediate cover is more permeable than the solid waste itself so that punching holes in the intermediate cover to allow the leachate to migrate down through solid waste will actually not occur. Additionally the Petitioners contend that the filter system and the storm water pond will not treat the dissolved chemical components of the leachate specified in Petitioner's Exhibit 2 and that these dissolved components will move through the sand filters into waters of the State. Contrary to Petitioner's contentions, however, the Applicant has demonstrated that leachate will not avoid capture by the leachate collection system by seeping horizontally through the cover or cap and out the sides of the landfill, provided that the side slope failure and erosion prevention measures found to be necessary in the above Findings of Fact are instituted in the design, construction and operation of the landfill. The design of the cap and closure system is basically a side slope seepage prevention system, except for the absence of terraces or benches. The intermediate soil cover beneath the clay cap and surrounding each cell of the landfill acts as a drainage medium. It will channel any seepage of leachate from the cells of solid waste through the permeable, intermediate soil cover, generally in a downward direction, both in and between the cells of the landfill throughout its cross-section, as well as downward through the intermediate soil cover lining immediately beneath the clay cap around the periphery of the landfill. This system, if the above design deficiency is corrected, will tend to force the leachate downward into the collection system, as opposed to horizontally out the cover or the sides of the landfill. The reason this system will work in this manner is because the intermediate cover soil is more permeable than the solid waste itself. The permeability of the intermediate cover will promote vertical movement of the leachate because, as the leachate migrates across each cell, it will encounter the vertical, intermediate soil cover layer at the side of each cell and that will promote its moving downward toward the collection system. The water in the landfill will thus follow the path of least resistance, so that the vertical portions of the intermediate cover layers surrounding each cell and surrounding the sides of the landfill beneath the clay cap, coupled with the force of gravity, will provide a preferential path downward toward the leachate collection system. This finding includes consideration of the Petitioners' contention that leachate will migrate downward and contact the impermeable clay anchor cap and build up head pressure so that it will seep out of the sides at the toe of the landfill. The intermediate cover layer underlying the sides of the landfill beneath the clay anchor cap is connected with the leachate collection system underlying the bottom of the landfill. Thus, a continuous conduction of leachate down through the intermediate cover, permeable layer will allow the leachate to seep downward all the way to the leachate collection system rather than pooling behind the impermeable clay anchor cap. This condition will be enhanced by the fact that surrounding each cell is the approximately vertical, permeable intermediate cover layer, throughout the entire cross-section of the landfill, such that much of the leachate will migrate downward in the interior of the landfill. Because of the ready conductance of leachate in a downward direction by the intermediate cover layers, Trail Ridge's policy of punching holes in the intermediate cover layer on the top of each cell in order to seek to prevent side slope seepage of leachate will be ineffective because the intermediate cover is more permeable than the solid waste. Thus, this procedure is unnecessary and, in fact, could become counter-productive to the extent that punching holes in the intermediate cover would allow rain water mixed with leachate to contact more of the solid waste contents of the landfill as it migrates down through the interior of each solid waste cell. This would result in a more highly concentrated form of leachate, which could pose more deleterious threats to ground and surface waters should it escape to ground and surface waters. Therefore, any grant of the permit should be conditioned on a prohibition of the Applicant thus violating the integrity of the intermediate cover layer overlying each cell as the landfill is built up in lifts. Gas Control System The Class I disposal area is designed with a gas control system which will prevent explosions and fires caused by the accumulation of methane gas due to decomposition of the waste in the landfill. The gas control system will prevent damage to the vegetation on the final cover of the closed portions of the landfill or vegetation beyond the perimeter of the property. It will prevent objectionable odors off site. The Petitioners have stipulated that the Applicants' gas control system will be designed in accordance with Rule 17- 701.050(5)(j), Florida Administrative Code. Although the Petitioners presented testimony of various persons who live in close proximity to other landfills, which were at one time operated by Waste Management subsidiary companies, neither the persons who testified of odor problems at those landfills, nor other witnesses presented testimony to show whether any of the landfills utilized a gas control system or one of equivalent design to that proposed for the subject facility. No evidence was presented to support a finding that the proposed landfill facility would produce objectionable odors to any significant degree. The Petitioners have further stipulated that the Class III disposal area is exempt from the gas control system requirements set forth in Rule 17- 701.050(5)(i) and (j) and (6)(i), Florida Administrative Code, and the Department agrees. Hydrogeology and Ground Water Monitoring The Applicant filed as part of its application, and placed in evidence, a hydrogeological survey and groundwater monitoring plan, contained in TRL Exhibit 51. The hydrology of the proposed landfill site may fairly be characterized as complex because it contains many different features such as recharge and discharge areas, varying zones of conductivity, a sand component to the surficial aquifer as well as a rock aquifer component and multi-directional groundwater flows. Additionally, wetland systems occur down-gradient from the higher levels of the surficial aquifer on the north, east and south sides of the proposed Class I disposal area. From the surface grade down to a depth of approximately 100 feet lies the surficial aquifer, which primarily consists of a coarse sand medium. Lying below the sand aquifer is a confining unit (relatively impermeable) identified as the Hawthorn Group, which consists of denser marls, dolomites and silver clays. Beneath the Hawthorn layer, at a depth of approximately 300-400 feet, is the Floridan aquifer, which serves as the principal deep water supply source for this part of Florida. Additionally, immediately above the Hawthorn layer in the deep zone of the surficial aquifer, a "rock aquifer" exists under a portion of the landfill site, generally the eastern-most portion. It was not shown to be continuous throughout the site. The rock aquifer is connected to the sand surficial aquifer lying above it. Zones of varying higher and lower permeability occur at various places within the surficial aquifer. Generally, groundwater at the site flows down-gradient in an easterly direction, caused by rain or surface water recharging the surficial aquifer on the higher portions of Trail Ridge, including the western side of the landfill Class I disposal site. The surficial aquifer then discharges this groundwater to the land surface and the wetlands lying on the eastern side of the site. Additionally, some northward and southward flow of groundwater occurs from recharge areas to the wetlands lying on the northerly and southerly boundaries of the Class I disposal site in the wetlands. The specific condition 19 contained in the Department's Notice of Intent to issue permit and draft permit requires the Applicant to periodically (quarterly) sample monitoring wells to ensure that water quality standards are not exceeded at the boundary of a zone of discharge established by that specific condition and authorized by Rule 17-28.700(4)(a), Florida Administrative Code. A groundwater monitoring plan has been developed by the Applicant, with accompanying hydrogeological survey as mandated by Rule 17-28.700, Florida Administrative Code. The proposed groundwater monitoring system consists of 42 monitoring wells in and around the area of the proposed Class I and Class III landfill sites. The system is designed to monitor upgradient and downgradient flows in wells constructed to sample from the shallow and intermediate zone and from the deep zone (to some extent) on the east boundary of the Class I disposal site. Specific condition number 18 of the Notice of Intent to grant the permit and draft permit, to which the Applicant has agreed, requires that a detailed chemical characterization of a representative sample of leachate be performed, so as to allow for any necessary modifications to the list of chemical substances to be analyzed in water samples drawn from the monitoring wells on a quarterly basis. Although there are up-gradient monitoring wells for the shallow and intermediate portions of the surficial aquifer, there are no upgradient monitoring wells for the deep zone of the surficial aquifer. There are no upgradient monitoring wells on the west side of the landfill in the deep zone. The deep zone of the surficial aquifer is the zone between the intermediate zone and the top of the Hawthorn confining bed. The rock aquifer is present beneath the proposed landfill site and was encountered at well locations B-7, B-8, B-12 and B-14. That rock aquifer is hydrologically connected to and part of the deep zone, which is hydrogeologically connected throughout the site to the uppermost portions of the surficial aquifer lying beneath the landfill. The rock aquifer is a significant source of drinking water in Duval County and the surrounding northeast Florida area and is used as a supply source for domestic and commercial wells within one and one-half miles of the landfill Class I site. "Sinkers" are immiscible liquids contained in landfill leachate that are denser than water. When released from the landfill they would sink to the first low permeability unit in the surficial aquifer. This would be at the bottom of the surficial aquifer at the rock unit. Once they encountered a lower permeability unit or strata, sinkers would then move in a more lateral direction downgradient in undetermined directions. The silty clay layer depicted on Figure 9 of TRL Exhibit 51 would intercept those sinkers and cause them to tend to move in a direction toward the silty clay layer intercepted by well B-1. At that point the sinkers would then have a tendency to move in a north or south direction on top of the confining zone. The direction those sinkers would move, following a gradient, cannot be determined at present from the groundwater monitoring plan because no deep wells are proposed in either of those areas which could detect sinkers. The groundwater monitoring plan is thus not adequate for the deep zone or to detect pollutants that could migrate off site in the rock aquifer because there are no monitoring wells in the deep zone on the west, north and south sides of the Class I landfill area. Monitoring for sinker compounds in the deep zones is thus insufficient and water supply wells nearby in the deep zone would be at risk because there is no way to detect pollutants between those water supply wells and the source of the pollutants at the landfill. The groundwater monitoring plan is inadequate because there is insufficient information to determine the direction of water flow in the deep zone. Sufficient upgradient monitoring wells in the deep zone are necessary in order to determine the direction of water flow in the deep zone which will in turn indicate where additional deep zone monitoring wells should be located to detect contaminants migrating off site. Leachates also contain contaminant constituents or compounds called "floaters." Floaters are immiscible liquids which are lighter or less dense than water. They tend to float on top of the groundwater table. The hydrologic information depicted with the application and the Applicant's evidence is not sufficient to determine where floaters might migrate. The shallow monitoring wells referenced in TRL Exhibit 42 would not adequately detect floaters at or near the water table surface. Due to the lower lying stream or wetland systems on the north and south side of the Class I landfill on Trail Ridge, groundwater flows in the vicinity of those areas are likely moving northward and southward to some extent. Thus, TRL Exhibit 51, and particularly Figure 14 of that exhibit, is insufficient to support a determination of where monitoring wells should be located because it does not include the impact of the stream or wetland systems on the north and south sides of the landfill. Groundwater contours bend into the stream areas on the north and south sides of the landfill which would indicate groundwater flow to the south and the north instead of just from west to east. The general shape of these contour lines would resemble the contour lines depicted in Figure 16 of TRL Exhibit 51. These contour lines bend back to the east and the west on the north and south sides of the Class I landfill. Since there is groundwater flow to the north and to the south from the Class I landfill, intermediate and deep monitoring wells in addition to shallow wells, should be located along the west, north and south sides of the landfill. Because they are not in the groundwater monitoring plan thus far, the plan is inadequate. A grant of the permits should be conditioned on such additional wells being installed and made a part of the monitoring program, in accordance with the above findings. A zone of discharge for the proposed landfill has been established pursuant to Rule 17-28.700(4)(a)2., Florida Administrative Code, which is intended to extend vertically from the base of the surficial aquifer and horizontally 100 feet beyond the footprint of the landfill or to the compliance groundwater monitoring wells, whichever is less. (See pages 611- 618 of the transcript.) Therefore, even if the groundwater monitoring wells are closer than 100 feet to the footprint of the landfill, they are to be used for monitoring for compliance with applicable water quality standards, including the primary and secondary drinking water standards for G-II groundwater, as contained in Rules 17-550.310 and 17-550.320, Florida Administrative Code. The Applicant has agreed to this location of the wells, their spatial relationship to the footprint of the landfill, to the zone of discharge and to their use for compliance purposes. Storm Water and Surface Water Management System The Applicant proposes as part of its permit application a storm water discharge and surface water management system. The application for permitting for that system was submitted to the DER which reviewed it using the Water Management District's permitting criteria set forth in Chapters 40C-4 and 40C- 42, Florida Administrative Code. Pursuant to its independent permitting authority set forth in Section 373.413, Florida Statutes, the DER noticed its intent to issue the MSSW permit to the Applicant, based upon its opinion that the project will comply with applicable rules. The proposed storm water discharge/surface water management system (MSSW system) will utilize roadside swales, perimeter ditches, catch basins, culverts, detention ponds and pump stations to manage storm water in compliance with Chapters 17-25, 40C-4 and 40C-42, Florida Administrative Code. The solid waste disposal areas will operate as watersheds, routing storm water in to the MSSW system. The retention areas have been designed to handle the retention treatment requirements of a 25-year, 24-hour "design storm" runoff, resulting from approximately eight to nine inches of rainfall. The system is comprised of three independent parts; the Class I landfill system, the Class III landfill system and the separate roadway surface water management system. The Class I system will use temporary berms to intercept storm water runoff from the cap cover system of the landfill, on top of the solid waste disposal area. These top berms will divert the storm water runoff to regularly spaced pipes which will convey the storm water into the perimeter swale located at the foot of the landfill side slopes. The runoff will then be diverted through a culvert into a concrete-lined perimeter ditch which will convey it to the pond. The top berms of the landfill also operate as erosion control features, capturing and channelling some storm water runoff away from the side slopes of the landfill, thereby assisting in erosion control. The Class I retention pond covers an area of approximately ten acres and will contain approximately 43 million gallons of water at design water levels. The peak flow of storm water runoff from a design 25-year, 24-hour storm can be accumulated and released at predetermined rates. The runoff from the first one inch of rainfall in a 72 hour period is retained and stored in the pond. No discharge will be allowed to the pond's outfall system, rather all the outfall from the runoff from the first inch of rainfall will be routed through the sand filter system prior to discharge. When storm water runoff enters the pond, it will mix with the water already in the pond and become part of the total water column. When a rainfall event then produces greater than one inch of rainfall, some water will have to be discharged from the pond by passing it through the sand filter and then discharging through the outfall structure. The water discharged is water which was already resident in the pond before the rainfall event, mixed with the current rainfall runoff from that hypothetical rainfall event. The volume of the pond is so large that storm water runoff will constitute a very small fraction of the actual water volume in the pond at any given time. On the average, it will take 33 days for a given molecule of storm water runoff to travel through the pond, the sand filter and then be discharged through the outfall system. the sand filter system operates on a water level trigger device involving floats in wet wells attached to electrical switching mechanisms. When a certain water elevation in the wet wells, reflective of the elevation in the pond, is reached, the pumps automatically start and pump water into the filter chambers, causing the water to flow over a filtering sand. The filter will be maintained periodically by lowering of the water level to permit removal and replacement of the top six inches of sand in the filter. The Class III storm water pond is similar in design to the Class I pond except that it will not use a top berm. Rather, a perimeter swale will function similarly to the Class I landfill top berm, intercepting storm water runoff from the top and side slopes of the Class III landfill. The Class III storm water pond is equipped with the same type of filtration and pumping system as the Class I pond. The Class III system is designed also to retain the first inch of storm water runoff from a "design storm" rainfall in a 72 hour period. All of that runoff from the first inch of rainfall will likewise be routed through sand filtering prior to discharge. The roadway storm water system utilizes grassed roadside swales to act as a retention structure to filter the storm water runoff. The runoff retained in the swales will be conveyed by pipe to a smaller detention and dispersion pond located between the Class I and Class III disposal areas and built with the same design constraints as the Class I pond. The roadway system will not use a pumping system to operate, but rather discharge will occur through natural action of gravity through the dispersion pond. The filtered storm water runoff from the Class I and Class III disposal areas will be discharged into adjacent wetlands after it leaves the ponds. The discharge will be performed by a wetland irrigation system. The irrigation system will discharge the filtered storm water through conveyance pipes to the wetland boundaries. There a series of perforated pipes will extend outward from the conveyance pipes themselves and serve as a means of gradually releasing the filtered storm water into the wet land area as a means of wetland replenishment and mitigation. Concerning the issue of surface water quality, it has been established that the sand filtering systems on the Class I and Class III storm water ponds are capable of providing 100 percent of the treatment required by State water quality standards when considered in conjunction with the treatment capability of the ponds themselves as natural lake systems. The individual sand filters each provide twice the capacity for treatment necessary which equates to a safety factor of 2. With both filters operating, there is a combined safety factor of 4. Although the Class I and Class III retention ponds are designed with filtration systems, the primary pollution removal system will be the ponds themselves operating as natural lakes. Once storm water enters the ponds, the average residence time is adequate to allow the biological processes of uptake and assimilation to function to remove the bulk of the pollutants, including those derived from any spillage of leachate into the storm water management system and ultimately deposited into the ponds. The volatile organic compounds which can occur in the leachate can largely be removed simply by the process of evaporation, due to the adequate retention time of any leachate- containing storm water which reaches the ponds. It has been established that, due to the storm water pond's natural treatment mechanisms, especially the long retention time, the size and volume of the ponds, as well as the vegetated sides of the ponds, that, considering also the operation of the filter system, the water discharging from the Class I and Class III storm water treatment facility will have very low concentrations of total nitrogen, phosphorous, biochemical oxygen demand (BOD), suspended solids and heavy metals. The Applicant's expert witness on water quality and water chemistry, Dr. Harper, also assumed that the Class I retention pond would have some leachate migration into the pond through groundwater influx. Worst case scenarios were used to estimate this possible influx and the results established a maximum deposition of 2.46 gallons of leachate into the pond over a 65 day period. This amount would be diluted by a factor of 14 million solely by new storm water runoff and rain normally expected under average rainfall conditions during such a 65 day period, without even considering the considerable dilution by the existing water volume of approximately 43 million gallons already in the pond in such a period. Dr. Harper's testimony is accepted. It is unlikely that any runoff can enter the retention pond on one day and then exit within one day's time through the outfall overflow device. Even assuming that runoff occurs in excess of the designed one inch, that runoff would dilute with the large volume of water already present in the storm water pond. Thus, the new storm water would be mixed, diluted and subject to natural biological processes and the process of evaporation (of volatile organic compounds), operative in the pond before it can be released through the outfall structure. The runoff will enter the pond at the west end and discharge through the opposite or east end of the pond. The majority of water caused to be discharged through the outfall because of a larger-than-design storm event runoff would thus actually be water already present in the pond as opposed to incoming runoff from the recent rain event being deposited in the west end of the pond where the storm water system discharges from the Class I disposal area. Even a rainfall event producing twice the designed-for volume would produce no effect on the water quality of the discharge. Further, along with the filter systems and the natural processes of biological uptake, assimilation as well as evaporation in the natural lake system which would operate in the pond, the side slopes of both ponds will be vegetated so as to further assist in uptake and removal of any pollutants present in the runoff, further mitigating any potential for water quality impacts. It has been established that the surface water management system is designed to segregate surface water from leachate by minimizing the size of the landfill working face and reducing the potential for storm water to contact waste and become leachate. Further, a berm will be constructed around each working face which will encompass the entire active cell of the landfill, causing any runoff water entering the working face to remain there and percolate through the landfill to the leachate collection system, rather than entering the storm water system. If a severe rainfall event could cause leachate to overflow those berms, the design includes additional berms on the interior slopes of the landfill to catch that overflow and divert it back through the leachate collection system. The berms are relocated as the working face of the landfill changes, so they will continue to fulfill these functions on an ongoing basis. In terms of a worst case event, the Applicant has also established that the estimated impact of runoff from approximately one acre of exposed solid waste entering the retention pond would still cause no water quality impacts. Further assurance of leachate segregation from surface waters is provided in a spillage control plan which would be activated in the event of leachate spillage from a tanker truck. In connection with this, any grant of the permit should be conditioned upon an adequate berm system surrounding the tank truck leachate filling device in order to contain any such spill to prevent the leachate from entering the storm water retention facilities and surface waters. Such a system should also be characterized by (and the permit conditioned upon) retention berms or other forms of containment being placed around each leachate storage tank, designed to retain the full capacity of such a leachate storage tank in the event of a catastrophic tank valve, piping or other failure. It has been demonstrated, moreover, that if the leachate-storm water separation and control system were to fail in some way so that leachate directly entered the retention pond, the volume of leachate entering the pond would have to exceed approximately 150,000 gallons to cause any water quality violation in the storm water retention pond, even assuming the high concentration of contaminants in the leachate envisioned in the opinion of Dr. Robert Livingston, the Petitioners' aquatic ecologist and toxicologist. He raised concerns that pollution of the head water systems of the St. Johns and St. Mary's Rivers might result from the operation of the project. The Applicant has rebutted the concerns expressed by Dr. Livingston and Dr. Parks and established reasonable assurances that toxins and contaminants occurring in leachate will not deposit in surface waters of the State in any significant or rule-violative amounts for the reasons expressed in the above Findings of Fact. Draw-Down Effects The Petitioners contend that there will be a draw-down of groundwater levels in surrounding wetlands caused by these storm water ponds and associated pumping, in violation of the Water Management District's rules and policy embodied in MSSW Handbook Section 10.6.3. This section presumes an adverse impact on wetlands will result if the system causes the groundwater table to be lowered more than five feet lower than the average dry season low water table. The Petitioners' expert in this area, Dr. Motz, estimated that a measurable draw-down of groundwater of one to two feet in the wetlands water table would extend outward as far as maybe 1,000 feet in all directions from each of the storm water ponds. Dr. Motz used a large error convergence factor in his calculations, however, and also used a model for a confined aquifer, which was not shown to exist at the subject site. He did not use a model which should be appropriate for unconfined or semiconfined aquifers which the evidence reveals is the more appropriate hydrogeology which would be employed in groundwater modeling for the subject site. Dr. Motz' use of a large error convergence factor can potentially result in an answer which is far from the actual appropriate draw-down figure. Numerical models are approximations of reality and the smaller the error convergence factor, then the closer to the real number of the cone of depression, or draw-down level, the model will give. Consequently, the use of an analytical groundwater, cone of depression model was shown by the Applicants' witnesses to give a more accurate result, especially in view of the large error convergence factor employed by Dr. Motz in his numerical model. It was not shown that Dr. Motz had actually "calibrated" the groundwater model he employed. The Applicants' hydrogeology expert, Don Miller, used three analytical and two empirical methods to determine radius of influence or draw-down from the storm water ponds and calibrated the models he used. Validating the data or calibrating the model is a way of making sure the model actually represents the situation intended. Calibration is performed in this instance by inputting some data and then seeing if the model itself could accurately predict the remainder of the data of interest. Using these various methods, Dr. Miller arrived at a range of radius of influence likely to occur from the Class I storm water pond of 167 feet to 184 feet at the western end of the pond and approximately 40 feet at the eastern end. The maximum radius of influence for the Class III storm water pond was shown to be approximately 160 feet at the western end and 0 at the northeastern corner. The other hydrogeology expert for the Applicant, Dr. Leve, performed a separate analytical analysis of draw-down using the Southwest Florida Water Management District's "KOCH" model to produce a projected radius of influence of approximately 167 feet, which is comparable to the projections of Dr. Miller. In conjunction with this, it was shown that Dr. Motz' use of a small value for groundwater infiltration and the large error convergence factor served to increase his predicted radius of influence in an inaccurate way. Dr. Motz also used a higher value for transmissivity or hydraulic conductivity ("K"). The Applicant's experts relied on the average of the actual permeability test results obtained for the site. A different figure for transmissivity or hydraulic conductivity results from Dr. Motz taking into account two test wells in which hydraulic conductivity could not be measured because the well water level rose too quickly to obtain a measurement. Consequently, he predicted or assumed that that factor might affect the hydraulic conductivity at the site by a whole order of magnitude, which resulted in his 1,000 foot prediction for draw-down cone of influence. The problem here is that the evidence does not demonstrate clearly that this much- greater hydraulic conductivity factor with regard to these two wells, which was an isolated incident compared to all other wells tested, is not some mechanical or human error in the installation or evaluation of the wells. Further, even if one predicts the hydraulic conductivity of the unmeasured, apparently highly conductive wells at the geometric mean of all the hydraulic conductivity measurements for the water table zone (except for the marl zone) at 3.0 X 10 cm/sec or three times greater than the value used by the Applicant, it would result in a cone of influence of 265 feet instead of 184 feet. If one also assumed a value for the two ignored wells, as data points, by assuming that they had a hydraulic conductivity value of 3.5 x 10/-3 cm/sec, the highest reported well conductivity value, and then employed that in the empirical formula used by Donald Miller, it would still not greatly exceed the 265 foot cone of depression number. No evidence was adduced to demonstrate that a cone of depression of that magnitude would have any adverse affect on the wetlands, especially in view of the recharging of the wetlands through the storm water pumping and irrigation system. In summary, the totality of the evidence in the Applicant's case, especially on rebuttal, demonstrates that Dr. Motz' methodology significantly overestimated the radius of influence for draw-down at both storm water ponds. The parties agree that the maximum draw-down of 16 feet would occur within the Class I storm water pond, where a "seepage face" would be formed where the pond would cut into the water table through earth borrowing activities. The maximum draw-down inside the Class III storm water pond, where a seepage face would be formed by the excavation into the water table to construct the pond, will be 14 feet. The lowered groundwater within the storm water ponds is due in part to the natural sloping land surface of that area and the concurrent natural slope of the water level before the ponds are even excavated. The slope of draw-down will decrease rapidly, that is, much of the 14 foot or 16 foot apparent draw-down amount will be the result of the relatively sheer seepage face formed by the pond excavation. At the top of that seepage face, the groundwater cone of depression will flatten out considerably and very rapidly so that, as the slope of the draw-down decreases rapidly in the immediate vicinity of the pond, the groundwater outside the ponds themselves will actually be lowered less than five feet. The groundwater levels used in the application were based upon seasonal high water level for the site, rather than "average dry season low" water levels, as referenced in Section 10.6.3 of the Water Management District's Applicant's handbook. Therefore, the projected draw-downs are very conservative and would overestimate the actual draw-down for dry season low water table groundwater levels. Consequently, the weight of the evidence supports the Applicant's predictions on the effects of draw-down. The evidence demonstrates that draw-down from the storm water ponds associated with both landfills will have either no impact or minimal impact on wetland species, either transitional or submerged, in the surrounding wetlands. Silvi-culture activities on the site have considerably altered the area and lowered the natural water table through the construction of drainage structures by the timber company in the past. In general, the wetland jurisdictional lines from the storm water ponds are based on United States Army Corps of Engineers (Corps) wetland criteria and thus do not contain species generally considered to be wetland species for purposes of DER dredge and fill or Water Management District MSSW jurisdictional purposes. Many species used by the Corps in determining jurisdiction, such as slash pine, can grow both in uplands or wetlands. The edges of the areas delineated as jurisdictional wetlands are dominated by transitional and upland plant species such as slash pine, gallberry, palmetto, grapevine and huckleberry, which can tolerate dry conditions. It is only as one's investigation proceeds waterward or toward the center of the delineated wetlands, (in which area the land surface slopes down- gradient at the same area where the draw-down cone of influence rapidly diminishes to an insignificant level), that the plant species change to those species adapted to regular and periodic inundation for purposes of the State agencies' wetlands jurisdiction. The draw-down maximum for any wetland location using the maximum projected radius from Dr. Miller's efforts of 184 feet, (17 feet beyond the projection based upon the Water Management District's model), is on the southwest edge of the Class I pond. Maximum draw-down there will be 24' inches at the wetland boundary line, that is, the Corps jurisdictional boundary line where the dominant plant species are transitional or upland plants such as slash pine, gallberry and bay trees. Pine trees at this point exhibit tall and vigorous growth which indicates that the water table, before installation of the ponds, is already well below the surface, otherwise these upland trees would lack sufficient oxygen to grow if water levels were closer to the surface. The potential draw-down here would thus have little effect on this vegetation. There will be essentially no draw-down effect further down-gradient beyond the DER Water Management District jurisdictional boundary, where the pines are already of diminished stature because of water existing close to the land's surface and where DER wetland jurisdictionally-listed plants predominate. The draw-down at the wetland boundary line on the southeastern part of the Class I pond will be 9 2/3 inches. Wetland species which could be affected are found 50-60 feet beyond that radius of influence at this point. The radius of influence on the northern side of the Class I pond will not cross any wetland boundary until it widens at the northwestern corner. The maximum draw-down at the wet land line near the northwestern corner of the pond would be approximately 15 1/2 inches. Here again the predominant plant species are the upland species of slash pine and gallberry and thus the draw-down will have little effect on those species for reasons mentioned above. On the western edge of the Class III pond is an isolated wetland for purposes of the Water Management District MSSW and Corps jurisdiction only. The edge of that wetland is dominated by slash pine and gallberry. The estimated draw-down on the boundary line of that land in the area dominated by slash pine and gallberry is six inches. There will be no draw-down from that Class III borrow pond area in any wetland dominated by transitional or submerged species. In addition to the above considerations and factual findings concerning the effect of the draw-down, the Applicant is proposing an irrigation systems as delineated above, which will deliver water to the wetlands to mitigate and replenish any minimal impacts of groundwater draw-down. The irrigation system will increase the degree and duration of saturation of the soils at the wetlands' boundary. This will mitigate any minimal effect of draw- down and may actually have the effect of enhancing the health and quality of the wetlands over time, from the wetlands' boundary waterward. In order that the irrigation system will pose the maximum benefit and most closely imitate the natural systems, the irrigation system will be designed for flexible operation. A wetlands ecologist will review the wetlands quarterly and adjust the irrigation system as necessary, as to location and operational regime, in order to properly maintain the health, including water levels and hydro-periods in the wetlands. The Applicant has agreed that the grant of the permit be conditioned to allow for this ongoing quarterly investigation and adjustment. Dr. Motz indicated in his testimony his belief that, to a large extent, the water pumped to the wetlands through the irrigation system would simply immediately migrate to the groundwater and immediately back to the storm water pond, through the effects of the draw-down, and not serve the purpose of replenishing the wetlands. He admitted, however, that he did not know whether the proposed irrigation system would work or not. The Applicant's expert witness in this regard, Dr. Leve, established that the irrigation system would effectively distribute water into the wetlands and saturate the surface due to the "mound effect" of water at the irrigation systems' discharge point at the wetland boundary. He used a standard, generally-accepted "mounding model" to predict the effects of the mounding for the irrigation system. Mounding is a hydrogeological phenomenon whereby water will mound up and create a zone of saturation in the soil at the point of discharge to the ground surface. Mr. Leve ran that model for a cross-section of each of the storm water pumps. He also ran the model for two different values of groundwater inputs into the ponds. A figure of 28,800 gallons of groundwater infiltration into the pond per day, as predicted by the Applicant's expert witnesses, and the 100,000 gallon per day groundwater input predicted by Dr. Motz was used. For both cross- section locations examined by Dr. Leve, the discharge of 28,000 gallons per day at the wetland boundary would raise groundwater levels by approximately three inches. The discharge of 100,000 gallons per day at the same locations through the irrigation system would increase water levels by approximately nine inches. These calculations ware based upon the discharge of the groundwater inputs into the storm water pond only. Discharge additionally of the inputs from storm water runoff from the surface of the landfill into the pond and then through the irrigation system would also be delivered into the wetlands as warranted. Additionally, a berm system will prevent surface water runoff from entering the north dirt borrow area. A berm will be constructed at the eastern boundary of the north borrow area to maintain an interior water elevation of 125 feet or one foot above the natural ground, whichever is higher. Water levels will thus be maintained at the north borrow area so that there will be no lowering or de-watering of the groundwater table. Additionally, storm water will be diverted by berms along the west end of both the Class I and Class III landfills upgradient and into the wetlands, so that the adjoining wetlands receive significant surface water recharge that previously did not flow into those wetlands. Mitigation A mitigation plan was proposed for purposes of both the dredge and fill permit application and, in the solid waste landfill application, for the MSSW permitting. It was incorporated into the draft dredge and fill permit and draft landfill permit incorporated in the Department's Notice of Intent to issue. The mitigation plan and other measures will offset the impacts from filling and other activities caused by the project in both the dredge and fill and MSSW jurisdictional wetlands on the site. The proposed mitigation measures include the creation of 4.76 acres of new wetlands; the irrigation of the wetlands surrounding the Class I and Class III storm water ponds, as delineated above, and the diversion of surface water around the landfills into the wetlands to aid in their recharge. A high quality, forested wetland will be created utilizing the reliable method of mulching and, an extensive hardwood planting program which will include red maple, sweetgum, cypress and tupelo trees. The created wetland will contain deep water and transitional zones. The area will be monitored to insure 80 percent survival of the trees planted and routine maintenance will be performed. Approval of this mitigation plan and any issuance of the permits should include the requirement that rapid replanting be done to replace any dead trees and such approval should also be conditioned on the use of the largest trees possible to be planted, by appropriate tree planting equipment, so that the beneficial uptake and filtering functions, as well as wildlife habitat functions of such hardwood wetlands can begin operating as a mitigatory factor as soon as possible. The created wetland area will replace lost wetlands with a wetland type of higher quality and potentially higher habitat function, depending upon the maturity of the trees planted (see above condition). The wetland replacement ratio attendant to the creation of this wetland area is proposed to be 2.8:1 and the permit should be conditioned on at least that ratio being observed in the mitigation wetland installation plan. Although there was some testimony critical of the wetland creation proposal because it would alter 4.76 acres of uplands which might be of significance to the wildlife in the area, in fact the site of the mitigation area is currently pine plantation which has been greatly altered from its natural state. It does not currently provide high quality upland wildlife habitat. Additionally, only 30-40 percent of the uplands on the entire tract will be altered by the entire project construction proposed. This leaves a majority of the uplands presently on the site in their current condition to the extent that it serves as wildlife habitat at the present time. A conversion of the subject area into a high quality hardwood forest wetland, which would remain bordered by upland on one side in any event, will not have any significant impact on the present value of the mitigation areas as habitat. Wetlands Assessment and Impacts Through the use of consultant personnel skilled in the fields of surveying, biology and botany, the Applicant established jurisdictional lines demarcating the boundaries of DER jurisdiction for dredge and fill permitting purposes and MSSW permitting purposes in the field and adduced evidence of those boundaries at the hearing. The jurisdictional lines established were conservative in the sense that they reflect the jurisdictional standards of the U.S. Army Corps of Engineers, which is generally landward of the lines which would be established by the plant communities characteristic of DER dredge and fill and Water Management District MSSW jurisdiction. The locations of the flags as placed by the biology-botany consultant were then professionally surveyed and plotted by a trained surveyor such that the jurisdictional line was signed and sealed as a "specific purpose of survey." Further, a biologist met with the surveyors weekly to review the plotted line to ensure accuracy. That survey was submitted to the Department in connection with the applications herein. The Department supports that jurisdictional determination in this proceeding. The Department's own jurisdictional determination staff members were on the sites of the jurisdictional determinations for approximately eight days. The location of the wetland jurisdictional line for purposes of MSSW permitting has not been challenged by Petitioners, and no evidence regarding MSSW jurisdiction has been presented by Petitioners in this proceeding. The wetlands jurisdictional survey prepared by the Petitioners, however, showed "new" DER jurisdictional wetlands which would represent, if accepted, an alteration of the DER jurisdictional wetland boundary. Additionally, the challenge to the DER. jurisdictional determination is restricted by the Petitioners to the area around the Class I landfill footprint and its associated storm water pond. No evidence has been presented regarding the jurisdictional determination for the remainder of the site and project, including the access road. Witness Don Garlic has a degree in marine biology with additional coursework and training in the field of botany, including field training in wetland species. He visited the site for seven days for the purpose of critiquing the dredge and fill DER jurisdictional line established by the Applicant and offered as proof by the Applicant in this proceeding. In the 2-3 mile segment of the jurisdictional line around the Class I landfill and associated storm water pond, Mr. Garlick opined that there were three gaps 18-20 feet wide where he did not agree with the dredge and fill jurisdictional line determination. These areas represented by the gaps, if the gaps were determined to be jurisdictional, would add rather long, linear features of putative wetlands to the jurisdictional wetlands already encompassed by the proposed Class I portion of the project. They would add approximately 1/2 acre of additional DER jurisdictional wetlands impacted by the project. The Petitioners, however, did not establish the duration of water flow at any of the areas in which dredge and fill jurisdiction was contested. Mr. Garlick stated that water was flowing each of the seven days he was on the site, from March 28 to May 8, 1991, but stated that it was raining when he was there on April 23. He did not review rainfall data to determine whether it had rained prior to any of his visits. Likewise, he was not shown to have reviewed any groundwater data or to have performed any tests to ascertain groundwater levels in relation to claiming jurisdiction over the disputed Areas A, B, C and D depicted on Petitioners' Exhibit 8. This site has not experienced a prolonged drought. For the period 1988 through the hearing, only the latter portion of 1990 reflected a significant lack of rainfall based on rainfall data obtained from the National Oceanic and Atmospheric Administration Office (NOAA) at the U.S. Navy's nearby Cecil Field, as well as the Jacksonville International Airport. Nineteen eighty-eight, in fact, had above-average rainfall of 61 inches. The Class I landfill area was originally "flagged" in September and early October 1989. July, August and September 1989 were months of above average rainfall. September 1989 had 14 inches of rain, twice the normal rainfall. Nineteen ninety had slightly less than half of its average rainfall for the year, although it started out with normal rainfall and became dry in the fall months. There has since been twice the normal rainfall for the few months of 1991 prior to the hearing. A drought of the type and duration experienced in the latter part of 1990 would have had no significant effect on the plants at the sites in question (sites A, B, C and D). They are perennial plants that remain year-round and therefore are adapted to drought and flood conditions. (T-2047) 1/ The Applicant's jurisdictional determination based upon dominant plant species, established by its consultant in evidence was based upon perennial plant species. Therefore, the hydrological conditions on the site were normal ones when these areas were originally reviewed in 1989 and the jurisdictional delineations established and the conditions found at the site shortly prior to the hearing in March through early May 1991 by Mr. Garlick were unusually wet conditions and do not reflect the normal conditions prevailing at the site. Mr. Byron Peacock was accepted as an expert in wetlands ecology and botany with a B.S. degree in each of those disciplines, with emphasis on Florida wetland species, especially with regard to Florida fresh water wetlands. Mr. Peacock is quite familiar with the site, having been to the site "dozens of times" since September 1989, almost every month for a 21-month period. Mr. Godley, another of Applicant's expert witnesses, also visited the areas put into contention by Mr. Garlick in his testimony for purposes of testifying in rebuttal and also concluded that these areas were not jurisdictional for purposes of the DER's dredge and fill jurisdiction. Mr. Mike Eaton of DER visited at least one of the areas or sites in contention and was of the same opinion. Mr. Garlick had relied on flowing water being present and the plants present to determine that Area A, a ditch along Hells Bay Road, was a jurisdictional wetland area. The areas on both sides are upland. Mr. Garlick testified that there were breaks in the vegetation in Area A and that the vegetation was sufficient to establish a connection. Area A does not contain sufficient water to support a dominance of listed wetland species under either the "a or b tests," as provided in Rule 17-301.400(1)(a) and (b), Florida Administrative Code. There is upland vegetation growing all the way across the ditch on both sides at its connecting point and point of discharge to dredge and fill wetlands. If the ditch held water it would be wettest at this point of discharge into the jurisdictional wetlands, but the ditch does not contain water on a regular and periodic basis, as established by the testimony of Mr. Peacock. Therefore, the water observed in the ditch by Mr. Garlick would have been surface water runoff from the recent high rainfall. Concerning Area B in the Class I storm water pond footprint, Mr. Garlick indicated that he relied on herbaceous wetland plants as a basis for his finding of that as a jurisdictional area. He used the "b test" vegetation method of at least 80 percent transitional plants, less than 10 percent submerged or upland species, as well as the presence of "other indicators" of regular and periodic inundation for that Area B for purposes of the rule cited last above. Area B is a logging road and lies between upland stands of planted pines. It has been used as a road within the past year and there are "rutted- out" or gouged areas in the road caused by vehicular traffic which have puddled water, but between the puddles are areas dominated by upland vegetation. There is also a clear vegetative break in jurisdiction at the point where Area B connects to the jurisdictional line at Area B's southern end. The vegetation at that connecting point is a mixture of red. root, a transitional plant and many upland species, the dominant one being amphicarpum muhlenbergianum, which looks similar to red root in the field. Mr. Garlick testified that red root was the predominant plant in Area B. Mr. Garlick may have mistaken amphicarpum muhlenberqianum for red root. He was not familiar with that upland species and did not know if it was found at the site. A review of photographs from the 1950s, 1960s, 1970s and 1980s showed that Area B had historically always been uplands. The evidence shows that this area holds water only in limited areas following rainfall and that there is no hydrological, "a or b test" vegetative connection between these areas and jurisdictional waters of the State. Area C, located on the west side of the present West Fiftone Road, also contains part of an old road bed, as well as a ditch. Area C was determined to be within MSSW jurisdiction by the Applicant, but was also claimed as a dredge and fill jurisdictional area by Mr. Garlick for the Petitioner. Mr. Garlick indicated in his testimony that plants in Area C were mixed transitional and submerged species, but were sufficient to make out the area as within DER jurisdiction, based upon those plants. He also testified that different parts of Area C met the "a test" or the "b test." The ditch on the eastern side of Area C is dominated by upland vegetation, including amphicarpum grass, slash pine and goldenrod. The slash pines growing in the ditch, as shown by a photograph in evidence, were several years old. This ditch was dry on all of Mr. Peacock's visits to the site except recently during heavy rains. The remainder of Area C is characterized by a canopy of slash pines, a subcanopy of titi shrub of an upland type, with less than ten percent of the vegetation being characterized by bay and tupelos. There is a ground cover over most of that area consisting of upland species such as chokeberry, gallberry and reindeer moss. This area was determined to be jurisdictional for MSSW purposes because of a wet area in the middle containing fetter bush and sweet gallberry, which are both transitional species for jurisdictional purposes. The entire Area C was delineated as MSSW in the permit application, even though it may not all be jurisdictional, simply for ease of delineation and survey. The MSSW wetland areas within Area C, however, have no vegetative or hydrologic connection to the dredge and fill jurisdictional wetlands. Area C thus does not contain sufficient water or vegetation under either the A or B test connected with other jurisdictional areas to be considered jurisdictional for purposes of the DER's dredge and fill jurisdiction. Area D consists of a rutted trail-road used on a regular basis by persons visiting the tract. There is an upland pine plantation on either side of the roadway. Mr. Garlick contended there was a "flow way" in Area D, but that the vegetation was spotty or sporadic. During the past 21 months, Area D was dry every time Mr. Peacock was on the site, except recently after prolonged, heavy rains. At the eastern end of Area D near its connection to Area C, there is a patch of upland amphicarpum grass, growing all the way across the ditch and road. There is also the presence of beak rush, an upland plant which looks similar to submerged rush. There is insufficient water or wetland vegetation under either the a or b test to establish that this Area D is jurisdictional. The evidence thus did not support the Petitioner's contention that additional dredge and fill wetlands would be impacted by the project. The areas claimed by the Petitioners as additional jurisdictional wetlands did not contain sufficient water to be determined jurisdictional, pursuant to DER Rule 17-301, Florida Administrative Code. These areas held water only at certain times of the year in direct response to heavy or frequent rainfall and were normally influenced, that is, fed, by surface water rather than groundwater. Likewise, these areas did not contain sufficient plant species in the canopy, subcanopy or ground cover to be considered jurisdictional pursuant to vegetation indices and procedures delineated in Rule 17- 301.400(1)(a) or (b), Florida Administrative Code. Mr. Mike Eaton of DER testified and established a 1990 DER policy embodied in a memorandum admitted into evidence explaining how the Department employs the above-cited rule for purposes of using hydric soils in making dredge and fill jurisdictional determinations. Both Mr. Eaton and the DER policy in evidence established that hydric soils are not used by the Department except as an indicator of regular and periodic inundation once "b test" vegetation has been determined to be present for purposes of the above rule. Mr. Garlick testified that he used hydric soils as a "back up" to jurisdictional determinations based upon hydrology and plants. He did not identify any area where his jurisdictional determination was based on soils alone. The Department policy memorandum in evidence emphasizes the importance, in jurisdictional determinations with hydric soils as an aid, of not merely determining whether the soil in question is hydric, but also of investigating the specific characteristics of the soil profile, which the Department maintains must be performed by a soils scientist. Mr. Carlisle, a soil scientist, visited the site and took samples of the areas indicated by Mr. Garlick. These locations were located in an approximate fashion by Mr. Garlick on Petitioner's Exhibit 8 at the hearing. Thirty-four of the 35 samples taken were determined to be hydiric by Dr. Carlisle. There are, however, breaks of up to approximately 525 feet between the hydric soils test findings in Areas A, B and D and yet the distance between one hydric and non-hydric soil test finding was shown to be approximately 50 feet. No soil samples were taken by Dr. Carlisle in Area C. These samples are found to provide an insufficient basis for determining the presence of hydric soils throughout Areas A-D. Additionally, Areas A-D did not contain areas of "b test" vegetation contiguous to other jurisdictional areas. Therefore, even if hydric soils had been present throughout these areas, these soils standing alone, without supporting "b test" vegetation, are insufficient to establish jurisdiction in the areas maintained to be so by Mr. Garlick. General Wetland Impacts This project will impact wetlands subject to the DER jurisdiction and which are jurisdictional for MSSW purposes under Chapter 40C-4, Florida Administrative Code, the rules of the St. Johns River Water Management District. Thus, a dredge and fill permit is required pursuant to Section 403.91 et seq., Florida Statutes, and DER Rule 17-312, Florida Administrative Code. Areas subject to DER dredge and fill jurisdiction and MSSW permitting jurisdiction are considered pursuant to DER Rules 17- 301 and 40C-4, Florida Administrative Code. The 1,288 acre site contains approximately 550 acres of wetland, much of which contains planted pines as well as some naturally occurring pines, as well as hardwood swamp, cypress and gum swamp, seepage slope, ditches and swales. Virtually all of the wetlands have been adversely affected in some way by the forestry practices which have occurred and are still occurring on the site. Most of the sloughs and natural flow-ways have been channelized. Ditching has drained the adjacent wetlands and significantly altered the hydrology of the entire wetland system on the site. The wetland known as Hells Bay Swamp, immediately east of the landfills, is currently being clear cut by the Gilman Paper Company. The 550 acres of wetlands are jurisdictional for either dredge and fill or MSSW purposes or both. Some 3.17 acres of MSSW wetlands will be impacted by project construction; 1.61 acres of these are also dredge and fill wetlands. The 1.61 acres of the impacted dredge and fill and MSSW wetlands consist of roadside ditches along the Hells Bay Road and a road on the north side of the Class I landfill. These roads are currently subject to logging traffic, which decreases the usage of the roadways and ditches by wildlife. Consequently, the master of species present and using these ditches is limited. In addition to the 1.61 acres of ditches, the impacted MSSW wetlands also include 0.16 acres of wetland ditches along the entrance road in proximity to dredge and fill wetlands, a 0.80 acre isolated cypress head wetland located within the footprint of the Class I landfill and a 0.60 acre wetland located along West Fiftone Road extending into the south border of the Class I landfill footprint. The 0.80 acre cypress head has already been impacted by a logging road or fire break, and ditches have been constructed through the interior of it. The larger cypresses have been logged, and the remaining vegetation is sparse, rendering it of little quality as habitat for fish and wildlife. The 0.60 acre wetland extending into the south border of the Class I landfill is an old road bed with evidence of ruts from vehicular traffic depicted on photographs in evidence. This area has a slash pine canopy and is dominated by titi shrubs, with a few black gum and traditional wetland plant species such as fetter bush and gallberry in disconnected areas. It is a low quality wetland of scant value as habitat for fish or wildlife. Prior to and during construction, as a condition on a grant of the permits, all wetlands on the site will be protected from erosion, siltation, scouring or excessive deposition of turbidity, de-watering or other construction and operationally-related impacts by the installation and use of siltation barriers placed at wetland boundaries. Because of the significant possibility of the impacts mentioned above, especially siltation and turbidity, to the wetlands during the construction phase of the facilities and attendant to ultimate operation of the landfill itself, grant of the permit should be conditioned on acceptance of monthly inspections by DER enforcement personnel once construction has begun. Wildlife and Archaeological Resource Impacts Wildlife surveys were conducted by expert witness Isaac Rhodes Robinson and members of his staff, as well as by Biological Research Associates, Inc. in the months preceding the hearing. Mr. Robinson and the biologists on his staff spent approximately 1,000 man hours surveying the site, and Mr. Robinson, accepted as an expert in wildlife ecology and wetland ecology, testified on behalf of the Applicant in this proceeding. Assessments of the site were performed by reviewing relevant literature as well as conducting field surveys for both upland and wetland species. No evidence was found of any threatened or endangered species on the site. Mr. Robinson and his staff conducted surveys in 1990 and in early 1991 and biologists from Mr. Robinson's staff were present on the site at various times from September 1989 through the time of the hearing. Surveys performed by Mr. Robinson and his personnel were conducted in accordance with Florida Game and Fresh Water Fish Commission (FGFWFC) guidelines and exceeded that agency's guidelines by surveying 100 percent of the upland areas. No testimony of any witness in this proceeding indicated any physical evidence of use of the site by any endangered or threatened species. Wildlife surveys revealed a shall colony of gopher tortoises, listed as a species of special concern by the FGFWFC in a marginal habitat zone on the extreme western boundary of the Class I disposal area. The colony consists of less than ten individuals and there will not be a significant impact to the tortoises because the individuals will be trapped and relocated to a more suitable habitat on another area of he Applicant's tract, which will be undisturbed by the landfill or its operations, or else to a suitable habitat area off-site, as directed by the FGFWFC. Jay Stephen Godley was accepted as an expert in wildlife ecology and wetlands ecology. He directed an independent assessment of the site and project's impacts. The assessment included reviewing permitting documents, aerial photographs and literature pertaining to wildlife use of the site, as well as over 90 man hours spent at the site. He confirmed that the small population of gopher tortoises was the only significant species on the site and that the project would not significantly impact any listed wildlife species. Extensive trapping and investigation of gopher tortoise and armadillo burrows reveal no evidence of listed "commensal" species, or those species commonly found in association with gopher tortoises, such as Florida mice, gopher frogs, Florida pine snakes, or Eastern indigo snakes. In additions the isolated cypress head in the Class I landfill footprint was sampled for gopher frog tadpoles, and none were found. Florida pine snakes prefer scrub or sand hill habitats, neither of which are found on the site. Pine flatwoods environments, without the presence of either sand hill or scrub habitat, like this site, are not good indigo snake habitat. No indigo snakes' shed skins or other evidence of indigo snake frequency were observed on the site. Indigo snakes are large black snakes which are active during daylight hours and easy to observe in the course of extensive surveys such as those that were conducted for purposes of this project. Considering the amount of time spent by the various biologists on the site, it is quite likely that indigo snakes would have been observed if they frequented this site. The project will have no significant impact on wading birds. All wetlands were surveyed for listed bird species for a minimum of five days using FGFWFC guidelines. No wading birds were observed on the site during the 21 month period of review by Mr. Robinson's firm. The existence of the wood stork, bald eagle or Florida sand hill crane was not established on this site and is considered unlikely by the expert witnesses, whose opinions are accepted. No eagle nests were observed and, since the tree cover provides very limited extent of open water, the site is less than satisfactory as habitat for the little blue heron, snowy egret and Louisiana heron. The only wading bird observed by the Petitioner's expert witness on wildlife issues was a little blue heron observed in a wetland area east of the site, which is off the site being purchased by the Applicant and which was recently clear-cut by the Gilman Paper Company. The project will have no significant adverse impact on the Florida black bear's habitat. The black bear is a threatened species, but black bears do not use the site. No evidence was presented that black bears have ever been present on or in the immediate vicinity of the site. No witness, including Mr. Goodowns, an employee of Gilman Paper Company who has frequently visited and worked on this site over many years, has ever observed a black bear or any sign of a black bear present on the site. Bee hives have been kept at the site since at least 1969 and, although these are very attractive to black bears, they have never been known to have disturbed the hives, nor has it ever been necessary for bee keepers to erect electric fences or other devices to protect the hives from bears. The site presently is not far isolated from human activity, which fact deters the use of it as a habitat or an occasional travel way for black bears. It is located in an area completely enclosed by I-10, State Roads 228 and U.S. Highway 301, all heavily traveled public highways, as well as in close proximity to the town of Maxville, approximately two miles away, and Macclenny, approximately five miles away. Highways with high traffic volumes are significant barriers to movements of black bears, rendering it even less likely that black bears have or will frequent the site. The only evidence of potential black bear presence anywhere near the site presented by the Petitioners was the site's position near the Osceola Black Bear Range, as interpreted from one published article, as well as indication of three bear road kills from six to 15 miles away from the site, and supposed black bear movements recorded by the FGFWFC, all represented on a hand-drawn map, only admitted a corroborative hearsay pursuant to Section 120.58, Florida Statutes. The map exhibit contained the expert's own redrawing of his interpretation of the extent of the Osceola Black Bear Range from the article he referenced, which itself was not offered into evidence. Bear movements depicted on the map really consisted of those of a bear apprehended by the FGFWF and released in the area. The map did not show any roads, therefore making location and distances to the reported road kills speculative at best. Because black bears do not use this site and because of its encirclement by significant human activity, the site is not significant as a bear dispersal corridor or travelway between the Osceola Forest bear population and the Ocala Forest population. No direct evidence by radio-telemetry data or otherwise was offered to show that black bears actually move between the Osceola and Ocala Forest populations, nor particularly that they move through the area in the immediate vicinity of the project site. Construction of the landfill would not prevent the movement or foraging of black bears through the site. Neither fencing nor presence of traffic on the landfill access roads only during daylight hours would prevent such movement. It is also unlikely that bears would likely be hit by traffic on the roads because the noisy trucks which will use the road would provide ample warning to bear's of any danger from traffic so they would avoid it. If the landfill were constructed on this site, less than one-half of 5/100 of one percent of the 3,800 square- mile area of the Osceola Black Bear Range, referenced by the Petitioners' expert witness, would be impacted. The site itself does not provide high quality black bear' foraging or denning habitat. Even the Petitioners' expert characterized it as "good" or "better than average" habitat. All but 3.17 acres of the area to be impacted by the project is upland, consisting primarily of pine flatwoods. Authoritative studies show that flatwoods are not heavily utilized by bears, which spend 70 percent of their time in swamp or wetland habitat. The 550 acres of wetlands, including approximately 280 acres of swamps, which will be left undisturbed on the site, will provide habitat and travel corridors for the black bears should any ever frequent the site. Additionally, the 4.76 acres of hardwood wetlands to be created as mitigation, would add high quality wetland habitat for black bears. Therefore, due to the extremely small area involved, the unlikelihood of use by black bears and the mitigation proposed, the landfill will have virtually no impact on black bear habitat, travelways or populations. The evidence thus established that the project will not have an adverse impact on endangered or threatened species or their habitats. Because the site has been under extensive commercial forest management and harvest operations for over forty years, the density of plant and animal life has been reduced, thus making the site as a whole, low quality wildlife habitat.
Recommendation Having considered the foregoing Findings of Fact, Conclusions of Law, the evidence of record, the candor and demeanor of the witnesses and the pleadings and arguments of the parties, it is, therefore RECOMMENDED: That a Final Order be entered by the Department of Environmental Regulation approving Trail Ridge Landfill, Inc.'s applications for the above-referenced permits for the proposed solid waste management facility, including a solid waste management facility permit, a storm water/management and storage of surface waters permit and a dredge and fill permit, provided those mandatory conditions specified in the Notices of Intent to issue such permits, as well as those conditions found to be necessary in the above Findings of Fact and Conclusions of Law are made mandatory conditions of permitting and subsequent facility operations. DONE AND ENTERED this 20th day of September, 1991, in Tallahassee, Leon County, Florida. P. MICHAEL RUFF Hearing Officer Division of Administrative Hearings The DeSoto Building 1230 Apalachee Parkway Tallahassee, FL 32399-1550 (904) 488-9675 Filed with the Clerk of the Division of Administrative Hearings this 20th day of September 1991.
Findings Of Fact Upon consideration of the oral and documentary evidence adduced at the hearing, the following relevant facts are found: Petitioner David M. Antoniak is the owner of property located at 1211 Hardman Drive in Orlando, Florida. The property fronts on a cove of Lake Lancaster and is adjacent to a stormwater drainage pipe operated by Orange County. When petitioner purchased the property in approximately February of 1978, the general waterfront around his property, as described by petitioner and other neighboring landowners, was filled with weeds which were decaying, trash and other debris, bad odors and bugs. Petitioner attempted to clean up the waterfront area, but was unsuccessful. In August of 1978, petitioner undertook the project which is presently in dispute. He removed approximately two truckloads of muck, weeds and debris from the water and the water's edge, placed a cypress log retaining wall between his property and the waters of Lake Lancaster, placed approximately one truckload of beach sand between the wall and the water, deposited an undetermined amount of fill material landward of the wall and put sod on the soil landward of the wall. Petitioner constructed the cypress log retaining wall in order to level out his lot, prevent runoff to the lake and to separate the dirt from the sand. He continues to fertilize his lawn and to spray it for bugs. The only portion of the retaining wall and property waterward of the natural ordinary high water line of Lake Lancaster is an area approximating eight by four feet. In March of 1979, petitioner applied to the DER for after-the-fact approval of construction of the retaining wall waterward of the ordinary high water line of the lake and the filling. After a field evaluation, DER gave notice of its intent to deny a permit. Lake Lancaster is a Class III body of water. The lake receives outfall from approximately twelve stormwater drainage pipes, one of which is located adjacent to petitioner's property. Aquatic plants and weeds are especially beneficial near such outfalls because they serve to assimilate and eliminate nutrients, stabilize sediments, and filter out suspended materials. Such vegetation also provides a habitat for fish. Although the area in dispute is small, removal of the aquatic vegetation significantly degrades the water quality of Lake Lancaster because of the area's location in a cove and the adjacent stormwater drainage pipe. The placement of the cypress log retaining wall will cause hydrological changes in the nature of increased turbidity due to wave action. Vertical walls may also lead to erosion. While the seawall will serve to reduce the initial flush of run off (of grass clippings, for example), fertilizers and bug sprays used on adjacent upland property will still percolate into the soil and eventually run off to the lake. The backfilling in the 8 by 4 foot space waterward of the ordinary high water level reduces the size of the lake and could possibly relate to flooding problems.
Recommendation Based upon the findings of fact and conclusions of law recited herein, it is recommended that the petitioner's application for a permit be DENIED. DONE AND ORDERED in Tallahassee, Leon County, Florida, this 9th day of October, 1980. DIANE D. TREMOR Hearing Officer Division of Administrative Hearings 101 Collins Building Tallahassee, Florida 32301 (904) 488-9675 Filed with the Clerk of the Division of Administrative Hearings this 9th day of October, 1980. COPIES FURNISHED: William A. Harmening Stanley, Harmening and Lovett Post Office Box 1706 Orlando, Florida 32802 Charles G. Stephens Assistant General Counsel Twin Towers Office Building 2600 Blair Stone Road Tallahassee, Florida 32301 David M. Antoniak 1121 Hardman Drive Orlando, Florida 32806 Jake Varn, Secretary Department of Environmental Regulation 2600 Blair Stone Road Tallahassee, Florida 32301
Findings Of Fact The Petitioner is the owner of five acres of undeveloped real property in Henderson Creek Basin, Naples, Collier County, Florida. The property is dominated at the tree canopy level by medium-sized cypress. The mid-story plant association is made up of a varying mix of wax myrtle, dahoon holly, seedling cypress, and a lesser amount of slash pine. Hypercium, stillingia, poverty grass, and xyris are the major components of the ground cover. In the vicinity of the proposed homesite, the ordinary mean water depth averages 2-4 inches, as indicated by the water marks on the stems of cypress, stillingia, and cypress knees. Based upon the dominant vegetation, the project site is within the jurisdiction of the Respondent for the regulatory purposes set forth by law. The Petitioner intends to build a house on the property for his personal use. In order to construct the residence, the Petitioner applied to the Respondent for a dredge an fill permit. In the application,, the Petitioner seeks a permit which would allow him to place 1,200 cubic yards of sand fill over a .17 acre area of the submerged land. The proposed location for the housepad, septic tank and drainfield is the center of the five acre parcel. This is the predominant area in which the Petitioner seeks to place the fill. A large portion of this part of the property is low and consists of wetlands. The project, as it is designed in the permit application, does not provide the Respondent with reasonable assurance that the applicable water quality standards for the geographical area will continue to be met. In fact, the proposal demonstrates that a violation of the standards will occur. The Petitioner recently cleared 14,340 square feet of the wetlands in the proposed homesite area. The cypress trees which ware removed acted as a pollution filtration system and aided in the cleansing of the standing waters on site. These waters eventually percolate down to the aquifer to become an important source of fresh water for the state. Without the trees, the water will lose an important aid in the natural purification process. In addition to the adverse impact on water quality, the project will interrupt the natural water flow and filtration which has historically occurred when the water located in the low wetland area on the property has overflowed and eventually run into Henderson Creek. The Respondent is required to consider this natural condition in its determination as to whether or not a permit should be issued. The Respondent has indicated that certain changes should be made to the project in order to make it eligible to receive a permit. The Respondent suggested that the Petitioner relocate the fill area for the house pad eighty- five feet to the west of the proposed site. The septic tank and drainfield should be moved one hundred and ten feet to the west. The drive should be reduced to a single lane which leads directly to the housepad. In addition, three culverts should be placed under the drive. The purpose of these modifications would be to minimize the impact of the project on the wetland site. The movement of the project away from the cypress area would minimize the damage to water quality that would occur if the septic system were placed in the wetlands. If the design for the lane and driveway were modified, the harm to the natural sheet flow of the water through the area on its route to the creek would be greatly reduced. Another suggested modification was to remove exotic vegetation which has been planted or which has begun to dominate in some areas because of the clearing of the property which took place before and after the Petitioner purchased the property. The Respondent also seeks a construction plan from the Petitioner which demonstrates that the fill areas will be adequately stabilized and that turbidity will be controlled during construction. The final modification suggested by the Respondent was for the Petitioner to place a deed restriction on the property which would protect the planting areas and the remainder of the wetlands on the site. The Petitioner's expert, Gary L. Beardsley, has recommended that the proposed circular entrance driveway be eliminated and that a single and straightened lane be substituted its place. He further recommended that one 12" diameter culvert should be installed under the lane near the housepad in order to facilitate or equalize any sheet flow on the downstream side. This recommendation is made to substitute for the agency's proposal that three culverts be placed under the straightened lane. In addition, the Petitioner's expert recommended that the septic drainfield be moved 30 feet westward to reduce the fill slope requirements by abutting the house and septic fill pads. The Petitioner should also be required to replant 5,265 square feet of wetland area that he cleared on site with the approval of the Collier Natural Resource Management Department, but without the approval of the Respondent. The Petitioner has not agreed to any of the proposed modifications, including those proposed by his own expert. The Respondent's request for a deed restriction is not necessary to the agency's regulatory function. There was no reason for the request presented at hearing by the agency.
The Issue The issue to be determined is whether Consumptive Use Permit No. 2-083-91926-3, and Environmental Resource Permit No. IND-083-130588-4 should be issued as proposed in the respective proposed agency actions issued by the St. Johns River Water Management District.
Findings Of Fact The Parties Sierra Club, Inc., is a national organization, the mission of which is to explore, enjoy, and advocate for the environment. A substantial number of Sierra Club’s 28,000 Florida members utilize the Silver River, Silver Springs, the Ocklawaha River, and the St. Johns River for water-based recreational activities, which uses include kayaking, swimming, fishing, boating, canoeing, nature photography, and bird watching. St. Johns Riverkeeper, Inc., is one of 280 members of the worldwide Waterkeepers Alliance. Its mission is to protect, restore, and promote healthy waters of the St. Johns River, its tributaries, springs, and wetlands -- including Silver Springs, the Silver River, and the Ocklawaha River -- through citizen- based advocacy. A substantial number of St. Johns Riverkeeper’s more than 1,000 members use and enjoy the St. Johns River, the Silver River, Silver Springs, and the Ocklawaha River for boating, fishing, wildlife observation, and other water-based recreational activities. Karen Ahlers is a native of Putnam County, Florida, and lives approximately 15 miles from the Applicant’s property on which the permitted uses will be conducted. Ms. Ahlers currently uses the Ocklawaha River for canoeing, kayaking, and swimming, and enjoys birding and nature photography on and around the Silver River. Over the years, Ms. Ahlers has advocated for the restoration and protection of the Ocklawaha River, as an individual and as a past-president of the Putnam County Environmental Council. Jeri Baldwin lives on a parcel of property in the northeast corner of Marion County, approximately one mile from the Applicant’s property on which the permitted uses will be conducted. Ms. Baldwin, who was raised in the area, and whose family and she used the resources extensively in earlier years, currently uses the Ocklawaha River for boating. Florida Defenders of the Environment (FDE) is a Florida corporation, the mission of which is to conserve and protect and restore Florida's natural resources and to conduct environmental education projects. A substantial number of FDE’s 186 members, of which 29 reside in Marion County, Florida, use and enjoy Silver Springs, the Silver River, and the Ocklawaha Aquatic Preserve, and their associated watersheds in their educational and outreach activities, as well as for various recreational activities including boating, fishing, wildlife observation, and other water-based recreational activities. Sleepy Creek Lands, LLC (Sleepy Creek or Applicant), is an entity registered with the Florida Department of State to do business in the state of Florida. Sleepy Creek owns approximately 21,000 acres of land in Marion County, Florida, which includes the East Tract and the North Tract on which the activities authorized by the permits are proposed. St. Johns River Water Management District (SJRWMD or District) is a water-management district created by section 373.069(1). It has the responsibility to conserve, protect, manage, and control the water resources within its geographic boundaries. See § 373.069(2)(a), Fla. Stat. The Consumptive Use Permit The CUP is a modification and consolidation of two existing CUP permits, CUP No. 2-083-3011-7 and CUP No. 2-083- 91926-2, which authorize the withdrawal of 1.46 mgd from wells located on the East Tract. Although the existing CUP permits authorize an allocation of 1.46 mgd, actual use has historically been far less, and rarely exceeded 0.3 mgd. The proposed CUP modification will convert the authorized use of water from irrigation of 1,010 acres of sod grass on the East Tract, to supplemental irrigation of improved pasture for grass and other forage crops (approximately 97 percent of the proposed withdrawals) and cattle watering (approximately three percent of the proposed withdrawals) on the North Tract and the East Tract. An additional very small amount will be used in conjunction with the application of agricultural chemicals. CUP No. 2-083-3011-7 is due to expire in 2021. CUP No. 2-083-91926-2 is due to expire in 2024. In addition to the consolidation of the withdrawals into a single permit, the proposed agency action would extend the term of the consolidated permit to 20 years from issuance, with the submission of a compliance report due 10 years from issuance. Sleepy Creek calculated a water demand of 2.569 mgd for the production of grasses and forage crops necessary to meet the needs for grass-fed beef production, based on the expected demand in a 2-in-10 drought year. That calculation is consistent with that established in CUP Applicant’s Handbook (CUP A.H.) section 12.5.1. The calculated amount exceeds the authorized average allocation of 1.46 mgd. Mr. Jenkins testified as to the District’s understanding that the requested amount would be sufficient, since the proposed use was a “scaleable-type project,” with adjustments to cattle numbers made as necessary to meet the availability of feed. Regardless of demand, the proposed permit establishes the enforceable withdrawal limits applicable to the property. With regard to the East Tract, the proposed agency action reduces the existing 1.46 mgd allocation for that tract to a maximum allocation of 0.464 mgd, and authorizes the irrigation of 611 acres of pasture grass using existing extraction wells and six existing pivots. With regard to the North Tract, the proposed agency action authorizes the irrigation of 1,620 acres of pasture and forage grain crops using 15 center pivot systems. Extraction wells to serve the North Tract pivots will be constructed on the North Tract. The proposed North Tract withdrawal wells are further from Silver Springs than the current withdrawal locations. The proposed CUP allows Sleepy Creek to apply the allocated water as it believes to be appropriate to the management of the cattle operation. Although the East Tract is limited to a maximum of 0.464 mgd, there is no limitation on the North Tract. Thus, Sleepy Creek could choose to apply all of the 1.46 mgd on the North Tract. For that reason, the analysis of impacts from the irrigation of the North Tract has generally been based on the full 1.46 mgd allocation being drawn from and applied to the North Tract. The Environmental Resource Permit As initially proposed, the CUP had no elements that would require issuance of an ERP. However, in order to control the potential for increased runoff and nutrient loading resulting from the irrigation of the pastures, Sleepy Creek proposes to construct a stormwater management system to capture runoff from the irrigated pastures, consisting of a series of vegetated upland buffers, retention berms and redistribution swales between the pastures and downgradient wetland features. Because the retention berm and swale system triggered the permitting thresholds in rule 62-330.020(2)(d) (“a total project area of more than one acre”) and rule 62-330.020(2)(e) (“a capability of impounding more than 40 acre-feet of water”), Sleepy Creek was required to obtain an Environmental Resource Permit for its construction. Regional Geologic Features To the west of the North Tract is a geologic feature known as the Ocala Uplift or Ocala Platform, in which the limestone that comprises the Floridan aquifer system exists at or very near the land surface. Karst features, including subterranean conduits and voids that can manifest at the land surface as sinkholes, are common in the Ocala Uplift due in large part to the lack of consolidated or confining material overlaying the limestone. Water falling on the surface of such areas tends to infiltrate rapidly through the soil into the Floridan aquifer, occasionally through direct connections such as sinkholes. The lack of confinement in the Ocala Uplift results in few if any surface-water features such as wetlands, creeks, and streams. As one moves east from the Ocala Uplift, a geologic feature known as the Cody Escarpment becomes more prominent. In the Cody Escarpment, the limestone becomes increasingly overlain by sands, shell, silt, clays, and other less permeable sediments of the Hawthorn Group. The North Tract and the East Tract lie to the east of the point at which the Cody Escarpment becomes apparent. As a result, water tends to flow overland to wetlands and other surface water features. The Property The North and East Tracts are located in northern Marion County near the community of Fort McCoy. East Tract Topography and Historic Use The East Tract is located in the Daisy Creek Basin, and includes the headwaters of a small creek that drains directly to the Ocklawaha River. The historic use of the East Tract has been as a cleared 1,010-acre sod farm. The production of sod included irrigation, fertilization, and pest control. Little change in the topography, use, and appearance of the property will be apparent as a result of the permits at issue, but for the addition of grazing cattle. The current CUPs that are subject to modification in this proceeding authorize groundwater withdrawals for irrigation of the East Tract at the rate of 1.46 mgd. Since the proposed agency action has the result of reducing the maximum withdrawal from wells on the East Tract to 0.464 mgd, thus proportionately reducing the proposed impacts, there was little evidence offered to counter Sleepy Creek’s prima facie case that reasonable assurance was provided that the proposed East Tract groundwater withdrawal allocation will meet applicable CUP standards. There are no stormwater management structures to be constructed on the East Tract. Therefore, the ERP permit discussed herein is not applicable to the East Tract. North Tract Topography and Historic Use The North Tract has a generally flat topography, with elevations ranging from 45 feet to 75 feet above sea level. The land elevation is highest at the center of the North Tract, with the land sloping towards the Ocklawaha River to the east, and to several large wet prairie systems to the west. Surface water features on the North Tract include isolated, prairie, and slough-type wetlands on approximately 28 percent of the North Tract, and a network of creeks, streams, and ditches, including the headwaters of Mill Creek, a contributing tributary of the Ocklawaha River. A seasonal high groundwater elevation on the North Tract is estimated at 6 to 14 inches below ground surface. The existence of defined creeks and surface water features supports a finding that the North Tract is underlain by a relatively impermeable confining layer that impedes the flow of water from the surface and the shallow surficial aquifer to the upper Floridan and lower Floridan aquifers. If there was no confining unit, water going onto the surface of the property, either in the form of rain or irrigation water, would percolate unimpeded to the lower aquifers. Areas in the Ocala Uplift to the west of the North Tract, where the confining layer is thinner and discontiguous, contain few streams or runoff features. Historically, the North Tract was used for timber production, with limited pasture and crop lands. At the time the 7,207-acre North Tract was purchased by Sleepy Creek, land use consisted of 4,061 acres of planted pine, 1,998 acres of wetlands, 750 acres of improved pasture, 286 acres of crops, 78 acres of non-forested uplands, 20 acres of native forest, 10 acres of open water, and 4 acres of roads and facilities. Prior to the submission of the CUP and ERP applications, much of the planted pine was harvested, and the land converted to improved pasture. Areas converted to improved pasture include those proposed for irrigation, which have been developed in the circular configuration necessary for future use with center irrigation pivots. As a result of the harvesting of planted pine, and the conversion of about 345 acres of cropland and non-forested uplands to pasture and incidental uses, total acreage in pasture on the North Tract increased from 750 acres to 3,938 acres. Other improvements were constructed on the North Tract, including the cattle processing facility. Aerial photographs suggest that the conversion of the North Tract to improved pasture and infrastructure to support a cattle ranch is substantially complete. The act of converting the North Tract from a property dominated by planted pine to one dominated by improved pasture, and the change in use of the East Tract from sod farm to pasture, were agricultural activities that did not require a permit from the District. As such, there is no impropriety in considering the actual, legal use of the property in its current configuration as the existing use for which baseline conditions are to be measured. Petitioners argue that the baseline conditions should be measured against the use of the property as planted pine plantation, and that Sleepy Creek should not be allowed to “cattle-up” before submitting its permit applications, thereby allowing the baseline to be established as a higher impact use. However, the applicable rules and statutes provide no retrospective time-period for establishing the nature of a parcel of property other than that lawfully existing when the application is made. See West Coast Reg’l Water Supply Auth. v. SW Fla. Water Mgmt. Dist., Case No. 95-1520 et seq., ¶ 301 (Fla. DOAH May 29, 1997; SFWMD ) (“The baseline against which projected impacts conditions [sic] are those conditions, including previously permitted adverse impacts, which existed at the time of the filing of the renewal applications.”). The evidence and testimony in this case focused on the effects of the water allocation on the Floridan aquifer, Silver Springs, and the Silver River, and on the effects of the irrigation on water and nutrient transport from the properties. It was not directed at establishing a violation of chapter 373, the rules of the SJRWMD, or the CUP Applicant’s Handbook with regard to the use and management of the agriculturally-exempt unirrigated pastures, nor did it do so. Soil Types Soils are subject to classifications developed by the Soil Conservation Service based on their hydrologic characteristics, and are grouped into Group A, Group B, Group C, or Group D. Factors applied to determine the appropriate hydrologic soil group on a site-specific basis include depth to seasonal high saturation, the permeability rate of the most restrictive layer within a certain depth, and the depth to any impermeable layers. Group A includes the most well-drained soils, and Group D includes the most poorly-drained soils. Group D soils are those with seasonal high saturation within 24 inches of the soil surface and a higher runoff potential. The primary information used to determine the hydrologic soil groups on the North Tract was the depth to seasonal-high saturation, defined as the highest expected annual elevation of saturation in the soil. Depth to seasonal-high saturation was measured through a series of seven hand-dug and augered soil borings completed at various locations proposed for irrigation across the North Tract. In determining depth to seasonal-high saturation, the extracted soils were examined based on depth, color, texture, and other relevant characteristics. In six of the seven locations at which soil borings were conducted, a restrictive layer was identified within 36 inches of the soil surface. At one location at the northeastern corner of the North Tract, the auger hole ended at a depth of 48 inches -- the length of the auger -- at which depth there was an observable increase in clay content but not a full restrictive layer. However, while the soil assessment was ongoing, a back-hoe was in operation approximately one hundred yards north of the boring location. Observations of that excavation revealed a heavy clay layer at a depth of approximately 5 feet. In each of the locations, the depth to seasonal-high saturation was within 14 inches of the soil surface. Based on the consistent observation of seasonal-high saturation at each of the sampled locations, as well as the flat topography of the property with surface water features, the soils throughout the property, with the exception of a small area in the vicinity of Pivot 6, were determined to be in hydrologic soil Group D. Hydrogeologic Features There are generally five hydrogeologic units underlying the North Tract, those units being the surficial aquifer system, the intermediate confining unit, the upper Floridan aquifer, the middle confining unit, and the lower Floridan aquifer. In areas in which a confining layer is present, water falling on the surface of the land flows over the surface of the land or across the top of the confining layer. A surficial aquifer, with a relatively high perched water table, is created by the confinement and separation of surface waters from the upper strata of the Floridan aquifer. Surface waters are also collected in or conveyed by various surface water features, including perched wetlands, creeks, and streams. The preponderance of the evidence adduced at the final hearing demonstrates that the surficial aquifer exists on the property to a depth of up to 20 feet below the land surface (bls). Beneath the surficial aquifer is an intermediate confining unit of dense clay interspersed with beds of sand and calcareous clays that exists to a depth of up to 100 feet bls. The clay material observed on the North Tract is known as massive or structureless. Such clays are restrictive with very low levels of hydraulic conductivity, and are not conducive to development of preferential flow paths to the surficial or lower aquifers. The intermediate confining unit beneath the North Tract restricts the exchange of groundwater from the surficial aquifer to the upper Floridan aquifer. The upper Floridan aquifer begins at a depth of approximately 100 feet bls, and extends to a depth of approximately 340 feet bls. At about 340 feet bls, the upper Floridan aquifer transitions to the middle confining unit, which consists of finely grained, denser material that separates the interchange of water between the upper Floridan aquifer and the lower Floridan aquifer. Karst Features Karst features form as a result of water moving through rock that comprises the aquifer, primarily limestone, dissolving and forming conduits in the rock. Karst areas present a challenging environment to simulate through modeling. Models assume the subsurface to be a relatively uniform “sand box” through which it is easier to simulate groundwater flow. However, if the subsurface contains conduits, it becomes more difficult to simulate the preferential flows and their effect on groundwater flow paths and travel times. The District has designated parts of western Alachua County and western Marion County as a Sensitive Karst Area Basin. A Sensitive Karst Area is a location in which the porous limestone of the Floridan aquifer occurs within 20 feet of the land surface, and in which there is 10 to 20 inches of annual recharge to the Floridan aquifer. The designation of an area as being within the Sensitive Karst Area Basin does not demonstrate that it does, or does not, have subsurface features that are karstic in nature, or that would provide a connection between the surficial aquifer and the Floridan aquifer. The western portion of the North Tract is within the Sensitive Karst Area Basin. The two intensive-use areas on the North Tract that have associated stormwater facilities -- the cattle unloading area and the processing facility -- are outside of the Sensitive Karst Area Basin. The evidence was persuasive that karst features are more prominent to the west of the North Tract. In order to evaluate the presence of karst features on the North Tract, Mr. Andreyev performed a “desktop-type evaluation,” with a minimal field survey. The desktop review included a review of aerial photographs and an investigation of available data, including the Florida Geological Survey database of sinkhole occurrence in the area. The aerial photographs showed circular depressions suggestive of karst activity west and southwest of the North Tract, but no such depressions on the North Tract. Soil borings taken on the North Tract indicated the presence of layers of clayey sand, clays, and silts at a depth of 70 to 80 feet. Well-drilling logs taken during the development of the wells used for an aquifer performance test on the North Tract showed the limestone of the Floridan aquifer starting at a depth below ground surface of 70 to 80 feet. Other boring data generated on the North Tract suggests that there is greater than 100 feet of clay and sandy clay overburden above the Floridan aquifer on and in the vicinity of the North Tract. Regardless of site-specific differences, the observed confining layer separating the surficial aquifer from the Floridan aquifer is substantial, and not indicative of a karst environment. Aquifer performance tests performed on the North Tract were consistent in showing that drawdown in the surficial aquifer from the tests was minimal to non-detectable, which is strong evidence of an intact and low-permeability confining layer. The presence of well-developed drainage features on the North Tract is further evidence of a unit of confinement that is restricting water from going deeper into the subsurface, and forcing it to runoff to low-lying surface water features. Petitioners’ witnesses did not perform any site- specific analysis of karst features on or around the Sleepy Creek property. Their understanding of the nature of the karst systems in the region was described as “hypothetical or [] conceptual.” Dr. Kincaid admitted that he knew of no conduits on or adjacent to the North Tract. As a result of the data collected from the North Tract, Mr. Hearn opined that the potential for karst features on the property that provide an opening to the upper Floridan aquifer “is extremely remote.” Mr. Hearn’s opinion is consistent with the preponderance of the evidence in this case, and is accepted. In the event a surface karst feature were to manifest itself, Sleepy Creek has proposed that the surface feature be filled and plugged to reestablish the integrity of the confining layer. More to the point, the development of a surficial karst feature in an area influenced by irrigation would be sufficient grounds for the SJRWMD to reevaluate and modify the CUP to account for any changed conditions affecting the assumptions and bases for issuance of the CUP. Silver Springs, the Silver River, and the Ocklawaha River The primary, almost exclusive concern of Petitioners was the effect of the modified CUP and the nutrients from the proposed cattle ranch on Silver Springs, the Silver River, and the Ocklawaha River. Silver Springs Silver Springs has long been a well-known attraction in Florida. It is located just to the east of Ocala, Florida. Many of the speakers at the public comment period of this proceeding spoke fondly of having frequented Silver Springs over the years, enjoying its crystal clear waters through famous glass-bottomed boats. For most of its recorded history, Silver Springs was the largest spring by volume in Florida. Beginning in the 1970s, it began to lose its advantage, and by the year 2000, Rainbow Springs, located in southwestern Marion County, surpassed Silver Springs as the state’s largest spring. Silver Springs exists at the top of the potentiometric surface of the Floridan aquifer. Being at the “top of the mountain,” when water levels in the Floridan aquifer decline, groundwater flow favors the lower elevation springs. Thus, surrounding springshed boundaries expand to take more water to maintain their baseflows, at the expense of the Silver Springs springshed, which contracts. Rainbow Springs shares an overlapping springshed with Silver Springs. The analogy used by Dr. Knight was of the aquifer as a bucket with holes at different levels, and with the Silver Springs “hole” near the top of the bucket. When the water level in the bucket is high, water will flow from the top hole. As the water level drops below that hole, it will preferentially flow from the lower holes. Rainbow Springs has a vent or outlet from the aquifer, that is 10 feet lower in elevation than that of Silver Springs. Coastal springs are lower still. Thus, as groundwater levels decline, the lower springs “pirate flow” from the upper springs. Since the first major studies of Silver Springs were conducted in the 1950s, the ecosystem of Silver Springs has undergone changes. The water clarity, though still high as compared to other springs, has been reduced by 10 to 15 percent. Since the 1950s, macrophytic plants, i.e., rooted plants with seeds and flowers, have declined in population, while epiphytic and benthic algae have increased. Those plants are sensitive to increases in nitrogen in the water. Thus, Dr. Knight’s opinion that increases in nitrogen emerging from Silver Springs, calculated to have risen from just over 0.4 mg/l in the 1950s, to 1.1 mg/l in 2004, and to up to 1.5 mg/l at present,1/ have caused the observed vegetative changes is accepted. Silver River Silver Springs forms the headwaters for the Silver River, a spring run 5 1/2 miles in length, at which point it becomes a primary input to the Ocklawaha River. Issues of water clarity and alteration of the vegetative regime that exist at Silver Springs are also evident in the Silver River. In addition, the reduction in flow allows for more tannic water to enter the river, further reducing clarity. Dr. Dunn recognized the vegetative changes in the river, and opined that the “hydraulic roughness” caused by the increase in vegetation is likely creating a spring pool backwater at Silver Springs, thereby suppressing some of the flow from the spring. The Silver River has been designated as an Outstanding Florida Water. There are currently no Minimum Flows and Levels established by the District for the Silver River. Ocklawaha River The Ocklawaha River originates near Leesburg, Florida, at the Harris Chain of Lakes, and runs northward past Silver Springs. The Silver River is a major contributor to the flow of the Ocklawaha River. Due to the contribution of the Silver River and other spring-fed tributaries, the Ocklawaha River can take on the appearance of a spring run during periods of low rainfall. Historically, the Ocklawaha River flowed unimpeded to its confluence with the St. Johns River in the vicinity of Palatka, Florida. In the 1960s, as part of the Cross-Florida Barge Canal project, the Rodman Dam was constructed across the Ocklawaha River north of the Sleepy Creek property, creating a large reservoir known as the Rodman Pool. Dr. Knight testified convincingly that the Rodman Dam and Pool have altered the Ocklawaha River ecosystem, precipitating a decline in migratory fish populations and an increase in filamentous algae. At the point at which the Ocklawaha River flows past the Sleepy Creek property, it retains its free-flowing characteristics. Mill Creek, which has its headwaters on the North Tract, is a tributary of the Ocklawaha River. The Ocklawaha River, from the Eureka Dam south, has been designated as an Outstanding Florida Water. However, the Ocklawaha River at the point at which Mill Creek or other potential surface water discharges from the Sleepy Creek property might enter the river are not included in the Outstanding Florida Water designation. There are currently no Minimum Flows and Levels established by the District for the Ocklawaha River. The Silver Springs Springshed A springshed is that area from which a spring draws water. Unlike a surface watershed boundary, which is fixed based on land features, contours, and elevations, a springshed boundary is flexible, and changes depending on a number of factors, including rainfall. As to Silver Springs, its springshed is largest during periods of more abundant rainfall when the aquifer is replenished, and smaller during drier periods when groundwater levels are down, and water moves preferentially to springs and discharge points that are lower in elevation. The evidence in this case was conflicting as to whether the North Tract is in or out of the Silver Springs springshed boundary. Dr. Kincaid indicated that under some of the springshed delineations, part of the North Tract was out of the springshed, but over the total period of record, it is within the springshed. Thus, it was Dr. Kincaid’s opinion that withdrawals anywhere within the region will preferentially impact Silver Springs, though he admitted that he did not have the ability to quantify his opinion. Dr. Knight testified that the North Tract is within the Silver Springs “maximum extent” springshed at least part of the time, if not all the time. He did not opine as to the period of time in which the Silver Springs springshed was at its maximum extent. Dr. Bottcher testified that the North Tract is not within the Silver Springs springshed because there is a piezometric rise between North Tract and Silver Springs. Thus, in his opinion, withdrawals at the North Tract would not be withdrawing water going to Silver Springs. Dr. Dunn agreed that the North Tract is on the groundwater divide for Silver Springs. In his view, the North Tract is sometimes in, and sometimes out of the springshed depending on the potentiometric surface. In his opinion, the greater probability is that the North Tract is more often outside of the Silver Springs springshed, with seasonal and year—to—year variation. Dr. Dunn’s opinion provides the most credible explanation of the extent to which the North Tract sits atop that portion of the lower Floridan aquifer that feeds to Silver Springs. Thus, it is found that the groundwater divide exists to the south of the North Tract for a majority of the time, and water entering the Floridan aquifer from the North Tract will, more often than not, flow away from Silver Springs. Silver Springs Flow Volume The Silver Springs daily water discharge has been monitored and recorded since 1932. Over the longest part of the period of record, up to the 1960s, flows at Silver Springs averaged about 800 cubic feet per second (cfs). Through 1989, there was a reasonable regression between rainfall and springflow, based on average rainfalls. The long-term average rainfall in Ocala was around 50 inches per year, and long-term springflow was about 800 cfs, with deviations from average generally consistent with one another. Between 1990 and 1999, the relationship between rainfall and springflow declined by about 80 cubic feet per second. Thus, with average rainfall of 50 inches per year, the average springflow was reduced to about 720 cfs. From 2000 to 2009, there was an additional decline, such that the total cumulative decline for the 20-year period through 2009 was 250 cfs. Dr. Dunn agreed with Dr. Knight that after 2000, there was an abrupt and persistent reduction in flow of about 165 cfs. However, Dr. Dunn did not believe the post-2000 flow reduction could be explained by rainfall directly, although average rainfall was less than normal. Likewise, groundwater withdrawals did not offer an adequate explanation. Dr. Dunn described a natural 30-year cycle of wetter and drier periods known as the Atlantic Multidecadal Oscillation (AMO) that has manifested itself over the area for the period of record. From the 1940s up through 1970, the area experienced an AMO wet cycle with generally higher than normal rainfall at the Ocala rain station. For the next 30-year period, from 1970 up to 2000, the Ocala area ranged from a little bit drier to some years in which it was very, very dry. Dr. Dunn attributed the 80 cfs decline in Silver Springs flow recorded in the 1990s to that lower rainfall cycle. After 2000, when the next AMO cycle would be expected to build up, as it did post—1940, it did not happen. Rather, there was a particularly dry period around 2000 that Dr. Dunn believes to have had a dramatic effect on the lack of recovery in the post-2000 flows in the Silver River. According to Mr. Jenkins, that period of deficient rainfall extended through 2010. Around the year 2001, the relationship between rainfall and flow changed such that for a given amount of rainfall, there was less flow in the Silver River, with flow dropping to as low as 535 cfs after 2001. It is that reduction in flow that Dr. Knight has attributed to groundwater withdrawals. It should be noted that the observed flow of Silver Springs that formed the 1995 baseline conditions for the North Central Florida groundwater model that will be discussed herein was approximately 706 cfs. At the time of the final hearing in August 2014, flow at Silver Springs was 675 cfs. The reason offered for the apparent partial recovery was higher levels of rainfall, though the issue was not explored in depth. For the ten-year period centered on the year 2000, local water use within Marion and Alachua County, closer to Silver Springs, changed little -- around one percent per year. From a regional perspective, groundwater use declined at about one percent per year for the period from 1990 to 2010. The figures prepared by Dr. Knight demonstrate that the Sleepy Creek project area is in an area that has a very low density of consumptive use permits as compared to areas adjacent to Silver Springs and more clearly in the Silver Springs springshed. In Dr. Dunn’s opinion, there were no significant changes in groundwater use either locally or regionally that would account for the flow reduction in Silver Springs from 1990 to 2010. In that regard, the environmental report prepared by Dr. Dunn and submitted with the CUP modification application estimated that groundwater withdrawals accounted for a reduction in flow at Silver Springs of approximately 20 cfs as measured against the period of record up to the year 2000, with most of that reduction attributable to population growth in Marion County. In the March 2014, environmental impacts report, Dr. Dunn described reductions in the stream flow of not only the Silver River, but of other tributaries of the lower Ocklawaha River, including the upper Ocklawaha River at Moss Bluff and Orange Creek. However, an evaluation of the Ocklawaha River water balance revealed there to be additional flow of approximately 50 cfs coming into the Ocklawaha River at other stations. Dr. Dunn suggested that changes to the vent characteristics of Silver Springs, and the backwater effects of increased vegetation in the Silver River, have resulted in a redistribution of pressure to other smaller springs that discharge to the Ocklawaha River, accounting for a portion of the diminished flow at Silver Springs. The Proposed Cattle Operation Virtually all beef cattle raised in Florida, upon reaching a weight of approximately 875 pounds, are shipped to Texas or Kansas to be fattened on grain to the final body weight of approximately 1,150 pounds, whereupon they are slaughtered and processed. The United States Department of Agriculture has a certification for grass—fed beef which requires that, after an animal is weaned, it can only be fed on green forage crops, including grasses, and on corn and grains that are cut green and before they set seed. The forage crops may be grazed or put into hay or silage and fed when grass and forage is dormant. The benefit of grass feeding is that a higher quality meat is produced, with a corresponding higher market value. Sleepy Creek plans to develop the property as a grass- fed beef production ranch, with pastures and related loading/unloading and slaughter/processing facilities where calves can be fattened on grass and green grain crops to a standard slaughter weight, and then slaughtered and processed locally. By so doing, Sleepy Creek expects to save the transportation and energy costs of shipping calves to the Midwest, and to generate jobs and revenues by employing local people to manage, finish, and process the cattle. As they currently exist, pastures proposed for irrigation have been cleared and seeded, and have “fairly good grass production.” The purpose of the irrigation is to enhance the production and quality of the grass in order to maintain the quality and reliability of feed necessary for the production of grass-fed beef. East Tract Cattle Operation The East Tract is 1,242 acres in size, substantially all of which was previously cleared, irrigated, and used for sod production. The proposed CUP permit authorizes the irrigation of 611 acres of pasture under six existing center pivots. The remaining 631 acres will be used as improved, but unirrigated, pasture. Under the proposed permit, a maximum of 1,207 cattle would be managed on the East Tract. Of that number, 707 cattle would be grazed on the irrigated paddocks, and 500 cattle would be grazed on the unirrigated improved pastures. If the decision is made to forego irrigation on the East Tract, with the water allocation being used on the North Tract or not at all, the number of cattle grazed on the six center pivot pastures would be decreased from 707 cattle to 484 cattle. The historic use of the East Tract as a sod farm resulted in high phosphorus levels in the soil from fertilization, which has made its way to Daisy Creek. Sleepy Creek has proposed a cattle density substantially below that allowed by application of the formulae in the Nutrient Management Plan in order to “mine” the phosphorus levels in the soil over time. North Tract Cattle Operation The larger North Tract includes most of the “new” ranch activities, having no previous irrigation, and having been put to primarily silvicultural use with limited pasture prior to its acquisition by Sleepy Creek. The ranch’s more intensive uses, i.e., the unloading corrals and the slaughter house, are located on the North Tract. The North Tract is 7,207 acres in size. Of that, 1,656 acres are proposed for irrigation by means of 15 center- pivot irrigation systems. In addition to the proposed irrigated pastures, the North Tract includes 2,382 acres of unirrigated improved pasture, of which approximately 10 percent is wooded. Under the proposed permit, a maximum of 6,371 cattle would be managed on the North Tract. Of that number, 3,497 cattle would be grazed on the irrigated paddocks (roughly 2.2 head of cattle per acre), and 2,374 cattle would graze on the improved pastures (up to 1.1 head of cattle per acre). The higher cattle density in the irrigated pastures can be maintained due to the higher quality grass produced as a result of irrigation. The remaining 500 cattle would be held temporarily in high-concentration corrals, either after offloading or while awaiting slaughter. On average, there will be fewer than 250 head of cattle staged in those high-concentration corrals at any one time. In the absence of irrigation, the improved pasture on the North Tract could sustain about 4,585 cattle. Nutrient Management Plan, Water Conservation Plan, and BMPs The CUP and ERP applications find much of their support in the implementation of the Nutrient Management Plan (NMP), the Water Conservation Plan, and Best Management Practices (BMPs). The NMP sets forth information designed to govern the day to day operations of the ranch. Those elements of the NMP that were the subject of substantive testimony and evidence at the hearing are discussed herein. Those elements not discussed herein are found to have been supported by Sleepy Creek’s prima facie case, without a preponderance of competent and substantial evidence to the contrary. The NMP includes a herd management plan, which describes rotational grazing and the movement of cattle from paddock to paddock, and establishes animal densities designed to maintain a balance of nutrients on the paddocks, and to prevent overgrazing. The NMP establishes fertilization practices, with the application of fertilizer based on crop tissue analysis to determine need and amount. Thus, the application of nitrogen- based fertilizer is restricted to that capable of ready uptake by the grasses and forage crops, limiting the amount of excess nitrogen that might run off of the pastures or infiltrate past the root zone. The NMP establishes operation and maintenance plans that incorporate maintenance and calibration of equipment, and management of high-use areas. The NMP requires that records be kept of, among other things, soil testing, nutrient application, herd rotation, application of irrigation water, and laboratory testing. The irrigation plan describes the manner and schedule for the application of water during each irrigation cycle. Irrigation schedules for grazed and cropped scenarios vary from pivot to pivot based primarily on soil type. The center pivots proposed for use employ high-efficiency drop irrigation heads, resulting in an 85 percent system efficiency factor, meaning that there is an expected evaporative loss of 15 percent of the water before it becomes available as water in the soil. That level of efficiency is greater than the system efficiency factor of 80 percent established in CUP A.H. section 12.5.2. Other features of the irrigation plan include the employment of an irrigation manager, installation of an on-site weather station, and cumulative tracking of rain and evapotranspiration with periodic verification of soil moisture conditions. The purpose of the water conservation practices is to avoid over application of water, limiting over-saturation and runoff from the irrigated pastures. Sleepy Creek has entered into a Notice of Intent to Implement Water Quality BMPs with the Florida Department of Agriculture and Consumer Services which is incorporated in the NMP and which requires the implementation of Best Management Practices.2/ Dr. Bottcher testified that implementation and compliance with the Water Quality Best Management Practices manual creates a presumption of compliance with water quality standards. His testimony in that regard is consistent with Department of Agriculture and Consumer Services rule 5M-11.003 (“implementation, in accordance with adopted rules, of BMPs that have been verified by the Florida Department of Environmental Protection as effective in reducing target pollutants provides a presumption of compliance with state water quality standards.”). Rotational Grazing Rotational grazing is a practice by which cattle are allowed to graze a pasture for a limited period of time, after which they are “rotated” to a different pasture. The 1,656 acres proposed for irrigation on the North Tract are to be divided into 15 center-pivot pastures. Each individual pasture will have 10 fenced paddocks. The 611 acres of irrigated pasture on the East Tract are divided into 6 center-pivot pastures. The outer fence for each irrigated pasture is to be a permanent “hard” fence. Separating the internal paddocks will be electric fences that can be lowered to allow cattle to move from paddock to paddock, and then raised after they have moved to the new paddock. The NMP for the North Tract provides that cattle are to be brought into individual irrigated pastures as a single herd of approximately 190 cattle and placed into one of the ten paddocks. They will be moved every one to three days to a new paddock, based upon growing conditions and the reduction in grass height resulting from grazing. In this way, the cattle are rotated within the irrigated pasture, with each paddock being used for one to three days, and then rested until each of the other paddocks have been used, whereupon it will again be used in the rotation. The East Tract NMP generally provides for rotation based on the height of the pasture grasses, but is designed to provide a uniform average of cattle per acre per year. Due to the desire to “mine” phosphorus deposited during the years of operation of the East Tract as a sod farm, the density of cattle on the irrigated East Tract pastures is about 30 percent less than that proposed for the North Tract. The East Tract NMP calls for a routine pasture rest period of 15 to 30 days. Unlike dairy farm pastures, where dairy cows traverse a fixed path to the milking barn several times a day, there will be minimal “travel lanes” within the pastures or between paddocks. There will be no travel lanes through wetlands. If nitrogen-based fertilizer is needed, based upon tissue analysis of the grass, fertilizer is proposed for application immediately after a paddock is vacated by the herd. By so doing, the grass within each paddock will have a sufficient period to grow and “flush up” without grazing or traffic, which results in a high—quality grass when the cattle come back around to feed. Sleepy Creek proposes that rotational grazing is to be practiced on improved pastures and irrigated pastures alike. The rotational practices on the improved East Tract and North Tract pastures are generally similar to those practiced on the irrigated pastures. The paddocks will have permanent watering troughs, with one trough serving two adjacent paddocks. The troughs will be raised to prevent “boggy areas” from forming around the trough. Since the area around the troughs will be of a higher use, Sleepy Creek proposes to periodically remove accumulated manure, and re-grade if necessary. Other cattle support items, including feed bunkers and shade structures are portable and can be moved as conditions demand. Forage Crop Production The primary forage crop on the irrigated pastures is to be Bermuda grass. Bermuda grass or other grass types tolerant of drier conditions will be used in unirrigated pastures. During the winter, when Bermuda grass stops growing, Sleepy Creek will overseed the North Tract pastures with ryegrass or other winter crops. Due to the limitation on irrigation water, the East Tract NMP calls for no over-seeding for production of winter crops. Crops do not grow uniformly during the course of a year. Rather, there are periods during which there are excess crops, and periods during which the crops are not growing enough to keep up with the needs of the cattle. During periods of excess, Sleepy Creek will cut those crops and store them as haylage to be fed to the cattle during lower growth periods. The North Tract management plan allows Sleepy Creek to dedicate one or more irrigated pastures for the exclusive production of haylage. If that option is used, cattle numbers will be reduced in proportion to the number of pastures dedicated to haylage production. As a result of the limit on irrigation, the East Tract NMP does not recommend growing supplemental feed on dedicated irrigation pivot pastures. Direct Wetland Impacts Approximately 100 acres proposed for irrigation are wetlands or wetland buffer. Those areas are predominantly isolated wetlands, though some have surface water connections to Mill Creek, a water of the state. Trees will be cut in the wetlands to allow the pivot to pass overhead. Tree cutting is an exempt agricultural activity that does not require a permit. There was no persuasive evidence that cutting trees will alter the fundamental benefit of the wetlands or damage water resources of the District. The wetlands and wetland buffer will be subject to the same watering and fertigation regimen as the irrigated pastures. The application of water to wetlands, done concurrently with the application of water to the pastures, will occur during periods in which the pasture soils are dry. The incidental application of water to the wetlands during dry periods will serve to maintain hydration of the wetlands, which is considered to be a benefit. Fertilizers will be applied through the irrigation arms, a process known as fertigation. Petitioners asserted that the application of fertilizer onto the wetlands beneath the pivot arms could result in some adverse effects to the wetlands. However, Petitioners did not quantify to what extent the wetlands might be affected, or otherwise describe the potential effects. Fertigation of the wetlands will promote the growth of wetland plants. Nitrogen applied through fertigation will be taken up by plants, or will be subject to denitrification -- a process discussed in greater detail herein -- in the anaerobic wetland soils. The preponderance of the evidence indicated that enhanced wetland plant growth would not rise to a level of concern. Since most of the affected wetlands are isolated wetlands, there is expected to be little or no discharge of nutrients from the wetlands. Even as to those wetlands that have a surface water connection, most, if not all of the additional nitrogen applied through fertigation will be accounted for by the combined effect of plant uptake and denitrification. Larger wetland areas within an irrigated pasture will be fenced at the buffer line to prevent cattle from entering. The NMP provided a blow-up of the proposed fencing related to a larger wetland on Pivot 8. Although other figures are not to the same scale, it appears that larger wetlands associated with Pivots 1, 2, 3, and 12 will be similarly fenced. Cattle would be allowed to go into the smaller, isolated wetlands. Cattle going into wetlands do not necessarily damage the wetlands. Any damage that may occur is a function of density, duration, and the number of cattle. The only direct evidence of potential damage to wetlands was the statement that “[i]f you have 6,371 [cattle] go into a wetland, there may be impacts.” The NMP provides that pasture use will be limited to herds of approximately 190 cattle, which will be rotated from paddock to paddock every two to three days, and which will allow for “rest” periods of approximately 20 days. There will be no travel lanes through any wetland. Thus, there is no evidence to support a finding that the cattle at the density, duration, and number proposed will cause direct adverse effects to wetlands on the property. High Concentration Areas Cattle brought to the facility are to be unloaded from trucks and temporarily corralled for inspection. For that period, the cattle will be tightly confined. Cattle that have reached their slaughter weight will be temporarily held in corrals associated with the processing plant. The stormwater retention ponds used to capture and store runoff from the offloading corral and the processing plant holding corral are part of a normal and customary agricultural activity, and are not part of the applications and approvals that are at issue in this proceeding. The retention ponds associated with the high-intensity areas do not require permits because they do not exceed one acre in size or impound more than 40 acre-feet of water. Nonetheless, issues related to the retention ponds were addressed by Petitioners and Sleepy Creek, and warrant discussion here. The retention ponds are designed to capture 100 percent of the runoff and entrained nutrients from the high concentration areas for a minimum of a 24—hour/25—year storm event. If rainfall occurs in excess of the designed storm, the design is such that upon reaching capacity, only new surface water coming to the retention pond will be discharged, and not that containing high concentrations of nutrients from the initial flush of stormwater runoff. Unlike the stormwater retention berms for the pastures, which are to be constructed from the first nine inches of permeable topsoil on the property, the corral retention ponds are to be excavated to a depth of six feet which, based on soil borings in the vicinity, will leave a minimum of two to four feet of clay beneath the retention ponds. In short, the excavation will penetrate into the clay layer underlying the pond sites, but will not penetrate through that layer. The excavated clay will be used to form the side slopes of the ponds, lining the permeable surficial layer and generally making the ponds impermeable. Organic materials entering the retention ponds will form an additional seal. An organic seal is important in areas in which retention ponds are constructed in sandy soil conditions. Organic sealing is less important in this case, where clay forms the barrier preventing nutrients from entering the surficial aquifer. Although the organic material is subject to periodic removal, the clay layer will remain to provide the impermeable barrier necessary to prevent leakage from the ponds. Dr. Bottcher testified that if, during excavation of the ponds, it was found that the remaining in-situ clay layer was too thin, Sleepy Creek would implement the standard practice of bringing additional clay to the site to ensure adequate thickness of the liner. Nutrient Balance The goal of the NMP is to create a balance of nutrients being applied to and taken up from the property. Nitrogen and phosphorus are the nutrients of primary concern, and are those for which specific management standards are proposed. Nutrient inputs to the NMP consist generally of deposition of cattle manure (which includes solid manure and urine), recycling of plant material and roots from the previous growing season, and application of supplemental fertilizer. Nutrient outputs to the NMP consist generally of volatization of ammonia to the atmosphere, uptake and utilization of the nutrients by the grass and crops, weight gain of the cattle, and absorption and denitrification of the nutrients in the soil. The NMP, and the various models discussed herein, average the grass and forage crop uptake and the manure deposition to match that of a 1,013 pound animal. That average weight takes into account the fact that cattle on the property will range from calf weight of approximately 850 pounds, to slaughter weight of 1150 pounds. Nutrients that are not accounted for in the balance, e.g., those that become entrained in stormwater or that pass through the plant root zone without being taken up, are subject to runoff to surface waters or discharge to groundwater. Generally, phosphorus not taken up by crops remains immobile in the soil. Unless there is a potential for runoff to surface waters, the nutrient balance is limited by the amount of nitrogen that can be taken up by the crops. Due to the composition of the soils on the property, the high water table, and the relatively shallow confining layer, there is a potential for surface runoff. Thus, the NMP was developed using phosphorus as the limiting nutrient, which results in nutrient application being limited by the “P-index.” A total of 108 pounds of phosphorus per acre/per year can be taken up and used by the irrigated pasture grasses and forage crops. Therefore, the total number of cattle that can be supported on the irrigated pastures is that which, as a herd, will deposit an average of 108 pounds of phosphorus per year over the irrigated acreage. Therefore, Sleepy Creek has proposed a herd size and density based on calculations demonstrating that the total phosphorus contained in the waste excreted by the cattle equals the amount taken up by the crops. A herd producing 108 pounds per acre per year of phosphorus is calculated to produce 147 pounds of nitrogen per acre per year. The Bermuda grass and forage crops proposed for the irrigated fields require 420 pounds of nitrogen per acre per year. As a result of the nitrogen deficiency, additional nitrogen-based fertilizer to make up the shortfall is required to maintain the crops. Since phosphorus needs are accounted for by animal deposition, the fertilizer will have no phosphorus. The NMP requires routine soil and plant tissue tests to determine the amount of nitrogen fertilizer needed. By basing the application of nitrogen on measured rather than calculated needs, variations in inputs, including plant decomposition and atmospheric deposition, and outputs, including those affected by weather, can be accounted for, bringing the full nutrient balance into consideration. The numeric values for crop uptakes, manure deposition, and other estimates upon which the NMP was developed were based upon literature, values, and research performed and published by the University of Florida and the Natural Resource Conservation Service. Dr. Bottcher testified convincingly that the use of such values is a proven and reliable method of developing a balance for the operation of similar agricultural operations. A primary criticism of the NMP was its expressed intent to “reduce” or “minimize” the transport of nutrients to surface waters and groundwater, rather than to “negate” or “prevent” such transport. Petitioners argue that complete prevention of the transport of nutrients from the property is necessary to meet the standards necessary for issuance of the CUP and ERP. Mr. Drummond went into some detail regarding the total mass of nutrients expected to be deposited onto the ground from the cattle, exclusive of fertilizer application. In the course of his testimony, he suggested that the majority of the nutrients deposited on the land surface “are going to make it to the surficial aquifer and then be carried either to the Floridan or laterally with the groundwater flow.” However, Mr. Drummond performed no analysis on the fate of nitrogen through uptake by crops, volatization, or soil treatment, and did not quantify the infiltration of nitrogen to groundwater. Furthermore, he was not able to provide any quantifiable estimate on any effect of nutrients on Mill Creek, the Ocklawaha River, or Silver Springs. In light of the effectiveness of the nutrient balance and other elements of the NMP, along with the retention berm system that will be discussed herein, Mr. Drummond’s assessment of the nutrients that might be expected to impact water resources of the District is contrary to the greater weight of the evidence. Mr. Drummond’s testimony also runs counter to that of Dr. Kincaid, who performed a particle track analysis of the fate of water recharge from the North Tract. In short, Dr. Kincaid calculated that of the water that makes it as recharge from the North Tract to the surficial aquifer, less than one percent is expected to make its way to the upper Floridan aquifer, with that portion originating from the vicinity of Pivot 6. Recharge from the other 14 irrigated pastures was ultimately accounted for by evapotranspiration or emerged at the surface and found its way to Mill Creek. The preponderance of the competent, substantial evidence adduced at the final hearing supports the effectiveness of the NMPs for the North Tract and East Tract at managing the application and use of nutrients on the property, and minimizing the transport of nutrients to surface water and groundwater resources of the District. North Central Florida Model All of the experts involved in this proceeding agreed that the use of groundwater models is necessary to simulate what might occur below the surface of the ground. Models represent complex systems by applying data from known conditions and impacts measured over a period of years to simulate the effects of new conditions. Models are imperfect, but are the best means of predicting the effects of stresses on complex and unseen subsurface systems. The North Central Florida (NCF) model is used to simulate impacts of water withdrawals on local and regional groundwater levels and flows. The NCF model simulates the surficial aquifer, the upper Floridan aquifer, and the lower Floridan aquifer. Those aquifers are separated from one another by relatively impervious confining units. The intermediate confining unit separates the surficial aquifer from the upper Floridan aquifer. The intermediate confining unit is not present in all locations simulated by the NCF model. However, the evidence is persuasive that the intermediate confining unit is continuous at the North Tract, and serves to effectively isolate the surficial aquifer from the upper Floridan aquifer. The NCF model is not a perfect depiction of what exists under the land surface of the North Tract or elsewhere. It was, however, acknowledged by the testifying experts in this case, despite disagreements as to the extent of error inherent in the model, to be the best available tool for calculating the effects of withdrawals of water within the boundary of the model. The NCF model was developed and calibrated over a period of years, is updated routinely as data becomes available, and has undergone peer review. Aquifer Performance Tests In order to gather site-specific data regarding the characteristics of the aquifer beneath the Sleepy Creek property, a series of three aquifer performance tests (APTs) was conducted on the North Tract. The first two tests were performed by Sleepy Creek, and the third by the District. An APT serves to induce stress on the aquifer by pumping from a well at a high rate. By observing changes in groundwater levels in observation wells, which can be at varying distances from the extraction well, one can extrapolate the nature of the subsurface. In addition, well-completion reports for the various withdrawal and observation wells provide actual data regarding the composition of subsurface soils, clays, and features of the property. The APT is particularly useful in evaluating the ability of the aquifer to produce water, and in calculating the transmissivity of the aquifer. Transmissivity is a measure of the rate at which a substance passes through a medium and, as relevant to this case, measures how groundwater flows through an aquifer. The APTs demonstrated that the Floridan aquifer is capable of producing water at the rate requested. The APT drawdown contour measured in the upper Floridan aquifer was greater than that predicted from a simple run of the NCF model, but the lateral extent of the drawdown was less than predicted. The most reasonable conclusion to be drawn from the combination of greater than expected drawdown in the upper Floridan aquifer with less than expected extent is that the transmissivity of the aquifer beneath the North Tract is lower than the NCF model assumptions. The conclusion that the transmissivity of the aquifer at the North Tract is lower than previously estimated means that impacts from groundwater extraction would tend to be more vertical than horizontal, i.e., the drawdown would be greater, but would be more localized. As such, for areas of lower than estimated transmissivity, modeling would over-estimate off-site impacts from the extraction. NCF Modeling Scenarios The initial NCF modeling runs were based on an assumed withdrawal of 2.39 mgd, an earlier -- though withdrawn - - proposal. The evidence suggests that the simulated well placement for the 2.39 mgd model run was entirely on the North Tract. Thus, the results of the model based on that withdrawal have some limited relevance, especially given that the proposed CUP allows for all of the requested 1.46 mgd of water to be withdrawn from North Tract wells at the option of Sleepy Creek, but will over-predict impacts from the permitted rate of withdrawal. A factor that was suggested as causing a further over-prediction of drawdown in the 2.39 mgd model run was the decision, made at the request of the District, to exclude the input of data of additional recharge to the surficial aquifer, wetlands and surface waters from the irrigation, and the resulting diminution in soil storage capacity. Although there is some merit to the suggestion that omitting recharge made the model results “excessively conservative,” the addition of recharge to the model would not substantially alter the predicted impacts. A model run was subsequently performed based on a presumed withdrawal of 1.54 mgd, a rate that remains slightly more than, but still representative of, the requested amount of 1.46 mgd. The 1.54 mgd model run included an input for irrigation recharge. The simulated extraction points were placed on the East Tract and North Tract in the general configuration as requested in the CUP application. The NCF is designed to model the impacts of a withdrawal based upon various scenarios, identified at the hearing as Scenarios A, B, C, and D. Scenario A is the baseline condition for the NCF model, and represents the impacts of all legal users of water at their estimated actual flow rates as they existed in 1995. Scenario B is all existing users, not including the applicant, at end-of-permit allocations. Scenario C is all existing users, including the applicant, at current end-of-permit allocations. Scenario D is all permittees at full allocation, except the applicant which is modeled at the requested (i.e., new or modified) end-of-permit allocation. To simulate the effects of the CUP modification, simulations were performed on scenarios A, C, and D. In order to measure the specific impact of the modification of the CUP, the Scenario C impacts to the surficial, upper Floridan, and lower Floridan aquifers were compared with the Scenario D impacts to those aquifers. In order to measure the cumulative impact of the CUP, the Scenario A actual-use baseline condition was compared to the Scenario D condition which predicts the impacts of all permitted users, including the applicant, pumping at full end-of-permit allocations. The results of the NCF modeling indicate the following: 2.39 mgd - Specific Impact The surficial aquifer drawdown from the simulated 2.39 mgd withdrawal was less than 0.05 feet on-site and off- site, except to the west of the North Tract, at which a drawdown of 0.07 feet was predicted. The upper Floridan aquifer drawdown from the 2.39 mgd withdrawal was predicted at between 0.30 and 0.12 feet on-site, and between 0.30 and 0.01 feet off-site. The higher off-site figures are immediately proximate to the property. The lower Floridan aquifer drawdown from the 2.39 mgd withdrawal was predicted at less than 0.05 feet at all locations, and at or less than 0.02 feet within six miles of the North Tract. 2.39 mgd - Cumulative Impact The cumulative impact to the surficial aquifer from all permitted users, including a 2.39 mgd Sleepy Creek withdrawal, was less than 0.05 feet on-site, and off-site to the north and east, except to the west of the North Tract, at which a drawdown of 0.07 feet was predicted. The cumulative impact to the upper Floridan aquifer from all permitted users, including a 2.39 mgd Sleepy Creek withdrawal, ranged from 0.4 feet to 0.8 feet over all pertinent locations. The cumulative impact to the lower Floridan aquifer from all permitted users, including a 2.39 mgd Sleepy Creek withdrawal, ranged from 1.0 to 1.9 feet over all pertinent locations. The conclusion drawn by Mr. Andreyev that the predicted impacts to the lower Floridan are almost entirely from other end-of-permit user withdrawals is supported by the evidence and accepted. 1.54 mgd - Specific Impact The NCF model runs based on the more representative 1.54 mgd withdrawal predicted a surficial aquifer drawdown of less than 0.01 feet (i.e., no drawdown contour shown) on the North Tract, and a 0.01 to 0.02 foot drawdown at the location of the East Tract. The drawdown of the upper Floridan aquifer from the CUP modification was predicted at up to 0.07 feet on the property, and generally less than 0.05 feet off-site. There were no drawdown contours at the minimum 0.01 foot level that came within 9 miles of Silver Springs. The lower Floridan aquifer drawdown from the CUP modification was predicted at less than 0.01 feet (i.e., no drawdown contour shown) at all locations. 1.54 mgd - Cumulative Impact A comparison of the cumulative drawdown contours for the 2.36 mgd model and 1.54 mgd model show there to be a significant decrease in predicted drawdowns to the surficial and upper Floridan aquifers, with the decrease in the upper Floridan aquifer drawdown being relatively substantial, i.e., from 0.5 to 0.8 feet on-site predicted for the 2.36 mgd withdrawal, to 0.4 to 0.5 feet on-site for the 1.54 mgd model. Given the small predicted individual impact of the CUP on the upper Floridan aquifer, the evidence is persuasive that the cumulative impacts are the result of other end-of-permit user withdrawals. The drawdown contour for the lower Floridan aquifer predicted by the 1.54 mgd model is almost identical to that of the 2.36 mgd model, thus supporting the conclusion that predicted impacts to the lower Floridan are almost entirely from other end-of-permit user withdrawals. Modeled Effect on Silver Springs As a result of the relocation of the extraction wells from the East Tract to the North Tract, the NCF model run at the 1.54 mgd withdrawal rate predicted springflow at Silver Springs to increase by 0.15 cfs. The net cumulative impact in spring flow as measured from 1995 conditions to the scenario in which all legal users, including Sleepy Creek, are pumping at full capacity at their end-of-permit rates for one year3/ is roughly 35.4 cfs, which is approximately 5 percent of Silver Springs’ current flow. However, as a result of the redistribution of the Sleepy Creek withdrawal, which is, in its current iteration, a legal and permitted use, the cumulative effect of the CUP modification at issue is an increase in flow of 0.l5 cfs. Dr. Kincaid agreed that there is more of an impact to Silver Springs when the pumping allowed by the CUP is located on the East Tract than there is on the North Tract, but that the degree of difference is very small. Dr. Knight testified that effect on the flow of Silver Springs from relocating the 1.46 mgd withdrawal from the East Tract to the North Tract would be “zero.” The predicted increase of 0.15 cfs is admittedly miniscule when compared to the current Silver Springs springflow of approximately 675 cfs. However, as small as the modeled increase may be -- perhaps smaller than its “level of certainty” -- it remains the best evidence that the impact of the CUP modification to the flow of Silver Springs will be insignificant at worst, and beneficial at best. Opposition to the NCF Model Petitioners submitted considerable evidence designed to call the results generated by the District’s and Sleepy Creek’s NCF modeling into question. Karst Features A primary criticism of the validity of the NCF model was its purported inability to account for the presence of karst features, including conduits, and their effect on the results. It was Dr. Kincaid’s opinion that the NCF model assigned transmissivity values that were too high, which he attributed to the presence of karst features that are collecting flow and delivering it to springs. He asserted that, instead of assuming the presence of karst features, the model was adjusted to raise the overall capacity of the porous medium to transmit water, and thereby match the observed flows. In his opinion, the transmissivity values of the equivalent porous media were raised so much that the model can no longer be used to predict drawdowns. That alleged deficiency in the model is insufficient for two reasons. First, as previously discussed in greater detail, the preponderance of the evidence in this case supports a finding that there are no karst features in the vicinity of the North Tract that would provide preferential pathways for water flow so as to skew the results of the NCF model. Second, Dr. Kincaid, while acknowledging that the NCF model is the best available tool for predicting impacts from groundwater extraction on the aquifer, suggested that a hybrid porous media and conduit model would be a better means of predicting impacts, the development of which would take two years or more. There is no basis for the establishment of a de facto moratorium on CUP permitting while waiting for the development of a different and, in this case, unnecessary model. For the reasons set forth herein, it is found that the NCF model is sufficient to accurately and adequately predict the effects of the Sleepy Creek groundwater withdrawals on the aquifers underlying the property, and to provide reasonable assurance that the standards for such withdrawals have been met. Recharge to the Aquifer Petitioners argued that the modeling results showing little significant drawdown were dependent on the application of unrealistic values for recharge or return flow from irrigation. In a groundwater model, as in the physical world, some portion of the water extracted from the aquifer is predicted to be returned to the aquifer as recharge. If more water is applied to the land surface than is being accounted for by evaporation, plant uptake and evapotranspiration, surface runoff, and other processes, that excess water may seep down into the aquifer as recharge. Recharge serves to replenish the aquifer and offset the effects of the groundwater withdrawal. Dr. Kincaid opined that the NCF modeling performed for the CUP application assigned too much water from recharge, offsetting the model's prediction of impacts to other features. It is reasonable to assume that there is some recharge associated with both agricultural and public supply uses. However, the evidence suggests that the impact of recharge on the overall NCF model results is insignificant on the predicted impacts to Silver Springs, the issue of primary concern. Mr. Hearn ran a simulation using the NCF model in which all variables were held constant, except for recharge. The difference between the “with recharge” and “without recharge" simulations at Silver Springs was 0.002 cfs. That difference is not significant, and is not suggestive of adverse impacts on Silver Springs from the CUP modification. Dr. Kincaid testified that “the recharge offset on the property is mostly impacting the surficial aquifer,” and that “the addition of recharge in this case didn't have much of an impact on the upper Floridan aquifer system.” As such, the effect of adding recharge to the model would be as to the effect of groundwater withdrawal on wetlands or surface water bodies, and not on springs. As previously detailed, the drawdown of the surficial aquifer simulated for the 2.39 mgd “no recharge” scenario were less than 0.05 feet on-site and off-site, except for a predicted 0.07 foot drawdown to the west of the North Tract. The predicted drawdown of the surficial aquifer for the 1.54 mgd “with recharge” scenario was 0.02 feet or less. The preponderance of the evidence supports a finding that drawdowns of either degree are less than that at which adverse impacts to wetlands or surface waters would occur. Thus, issues related to the recharge or return flows from irrigation are insufficient to support a finding or conclusion that the NCF model failed to provide reasonable assurance that the standards for issuance of the CUP modification were met. External Boundaries The boundaries of the NCF model are not isolated from the rest of the physical world. Rather, groundwater flows into the modeled area from multiple directions, and out of the modeled area in multiple directions. Inflows to the model area are comprised of recharge, which is an assigned value, and includes water infiltrating and recharging the aquifer from surface waters; injection wells; upward and downward leakage from lower aquifers; and flow across the external horizontal boundaries. Outflows from the model area include evapotranspiration; discharge to surface waters, including springs and rivers; extraction from wells; upward and downward leakage from lower aquifers; and flow against the external model boundaries. Dr. Kincaid testified that flow across the external model boundary is an unknown and unverifiable quantity which increases the uncertainty in the model. He asserted that in the calibrated version of the model, there is no way to check those flows against data. His conclusion was that the inability of the NCF model to accurately account for external boundary flow made the margin of error so great as to make the model an unreliable tool with which to assess whether the withdrawal approved by the proposed CUP modification will increase or decrease drawdown at Silver Springs. The District correlates the NCF model boundaries with a much larger model developed by the United States Geological Survey, the Peninsula of Florida Model, more commonly referred to as the Mega Model, which encompasses most of the State of Florida and part of Southeast Georgia. The Mega Model provides a means to acknowledge that there are stresses outside the NCF model, and to adjust boundary conditions to account for those stresses. The NCF is one of several models that are subsets of the Mega Model, with the grids of the two models being “nested” together. The 1995 base year of the NCF model is sufficiently similar to the 1993-1994 base year of the Mega Model as to allow for a comparison of simulated drawdowns calculated by each of the models. By running a Mega Model simulation of future water use, and applying the change in that use from 1993 base year conditions, the District was able to come to a representative prediction of specific boundary conditions for the 1995 NCF base year, which were then used as the baseline for simulations of subsequent conditions. In its review of the CUP modification, the District conducted a model validation simulation to measure the accuracy of the NCF model against observed conditions, with the conditions of interest being the water flow at Silver Springs. The District ran a simulation using the best information available as to water use in the year 2010, the calculated boundary conditions, irrigation, pumping, recharge, climatic conditions, and generally “everything that we think constitutes that year.” The discharge of water at Silver Springs in 2010 was measured at 580 cfs. The discharge simulated by the NCF model was 545 cfs. Thus, the discharge predicted by the NCF model simulation was within six percent of the observed discharge. Such a result is generally considered in the modeling community to be “a home run.” Petitioners’ objections to the calculation of boundary conditions for the NCF model are insufficient to support a finding that the NCF model is not an appropriate and accurate tool for determining that reasonable assurance has been provided that the standards for issuance of the CUP modification were met. Cumulative Impact Error As part of the District’s efforts to continually refine the NCF, and in conjunction with a draft minimum flows and levels report for Silver Springs and the Silver River, the cumulative NCF model results for the period of baseline to 2010 were compared with the simulated results from the Northern District Model (NDF), a larger model that overlapped the NCF. As a result of the comparison, which yielded different results, it was discovered that the modeler had “turned off” not only the withdrawal pumps, but inputs to the aquifer from drainage wells and sinkholes as well. When those inputs were put back into the model run, and effects calculated only from withdrawals between the “pumps-off” condition and 2010 pumping conditions, the cumulative effect of the withdrawals was adjusted from a reduction in the flow at Silver Springs of 29 cfs to a reduction of between 45 and 50 cfs, an effect described as “counterintuitive.” Although that result has not undergone peer review, and remains subject to further review and comparison with the Mega Model, it was accepted by the District representative, Mr. Bartol. Petitioners seized upon the results of the comparison model run as evidence of the inaccuracy and unreliability of the NCF model. However, the error in the NCF model run was not the result of deficiencies in the model, but was a data input error. Despite the error in the estimate of the cumulative effect of all users at 2010 levels, the evidence in this case does not support a finding that the more recent estimates of specific impact from the CUP at issue were in error. NCF Model Conclusion As has been discussed herein, a model is generally the best means by which to calculate conditions and effects that cannot be directly observed. The NCF model is recognized as being the best tool available for determining the subsurface conditions of the model domain, having been calibrated over a period of years and subject to peer review. It should be recognized that the simulations run using the NCF model represent the worst—case scenario, with all permittees simultaneously drawing at their full end-of-permit allocations. There is merit to the description of that occurrence as being “very remote.” Thus, the results of the modeling represent a conservative estimate of potential drawdown and impacts. While the NCF model is subject to uncertainty, as is any method of predicting the effects of conditions that cannot be seen, the model provides reasonable assurance that the conditions simulated are representative of the conditions that will occur as a result of the withdrawals authorized by the CUP modification. Environmental Resource Permit The irrigation proposed by the CUP will result in runoff from the North Tract irrigated pastures in excess of that expected from the improved pastures, due in large measure to the diminished storage capacity of the soil. Irrigation water will be applied when the soils are dry, and capable of absorbing water not subject to evaporation or plant uptake. The irrigation water will fill the storage space that would exist without irrigation. With irrigation water taking up the capacity of the soil to hold water, soils beneath the irrigation pivots will be less capable of retaining additional moisture during storm events. Thus, there is an increased likelihood of runoff from the irrigated pastures over that expected with dry soils. The increase in runoff is expected to be relatively small, since there should be little or no irrigation needed during the normal summer wet season. The additional runoff may have increased nutrient levels due to the increased cattle density made possible by the irrigation of the pastures. The CUP has a no—impact requirement for water quality resulting from the irrigation of the improved pasture. Thus, nutrients leaving the irrigated pastures may not exceed those calculated to be leaving the existing pre-development use as improved pastures. Retention Berms The additional runoff and nutrient load is proposed to be addressed by constructing a system of retention berms, approximately 50,0004/ feet in length, which is intended to intercept, retain, and provide treatment for runoff from the irrigated pasture. The goal of the system is to ensure that post—development nutrient loading from the proposed irrigated pastures will not exceed the pre—development nutrient loading from the existing improved pastures. An ERP permit is required for the construction of the berm system, since the area needed for the construction of the berms is greater than the one acre in size, and since the berms have the capability of impounding more than 40 acre-feet of water. The berms are to be constructed by excavating the top nine inches of sandy, permeable topsoil and using that permeable soil to create the berms, which will be 1 to 2 feet in height. The water storage areas created by the excavation will have flat or horizontal bottoms, and will be very shallow with the capacity to retain approximately a foot of water. The berms will be planted with pasture grasses after construction to provide vegetative cover. The retention berm system is proposed to be built in segments, with the segment designed to capture runoff from a particular center pivot pasture to be constructed prior to the commencement of irrigation from that center pivot. A continuous clay layer underlies the areas in which the berms are to be constructed. The clay layer varies from 18 to 36 inches below the ground surface, with at least one location being as much as five feet below the ground surface. As such, after nine inches of soil is scraped away to create the water retention area and construct the berm, there will remain a layer of permeable sandy material above the clay. The berms are to be constructed at least 25 feet landward of any jurisdictional wetland, creating a “safe upland line.” Thus, the construction, operation, and maintenance of the retention berms and redistribution swales will result in no direct impacts to jurisdictional wetlands or other surface waters. There will be no agricultural activities, e.g., tilling, planting, or mowing, within the 25-foot buffers, and the buffers will be allowed to establish with native vegetation to provide additional protection for downgradient wetlands. As stormwater runoff flows from the irrigated pastures, it may, in places, create concentrated flow ways. Redistribution swales will be built in those areas to spread any remaining overland flow of water and reestablish sheet flow to the retention berm system. At any point at which water may overtop a berm, the berm will be hardened with rip—rap to insure its integrity. The berms are designed to intercept and collect overland flow from the pastures and temporarily store it behind the berms, regaining the soil storage volume lost through irrigation. A portion of the runoff intercepted by the berm system will evaporate. The majority will infiltrate either through the berm, or vertically into the subsurface soils beneath it. When the surficial soils become saturated, further vertical movement will be stopped by the impermeable clay layer underlying the site. The runoff water will then move horizontally until it reemerges into downstream wetland systems. Thus, the berm system is not expected to have a measurable impact on the hydroperiod of the wetlands on the North Tract. Phosphorus Removal Phosphorus tends to get “tied up” in soil as it moves through it. Phosphorus reduction occurs easily in permeable soil systems because it is removed from the water through a chemical absorption process that is not dependent on the environment of the soil. As the soils in the retention areas and berms go through drying cycles, the absorption capacity is regenerated. Thus, the retention system will effectively account for any increase in phosphorus resulting from the increased cattle density allowed by the irrigation such that there is expected to be no increase in phosphorus levels beyond the berm. Nitrogen Removal When manure is deposited on the ground, primarily as high pH urine, the urea is quickly converted to ammonia, which experiences a loss of 40 to 50 percent of the nitrogen to volatization. Soil conditions during dry weather conditions are generally aerobic. Remaining ammonia in the manure is converted by aerobic bacteria in the soil to nitrates and nitrites. Converted nitrates and nitrites from manure, along with nitrogen from fertilizer, is readily available for uptake as food by plants, including grasses and forage crops. Nitrates and nitrites are mobile in water. Therefore, during rain events of sufficient intensity to create runoff, the nitrogen can be transported downstream towards wetlands and other receiving waters, or percolate downward through the soil until blocked by an impervious barrier. During storm events, the soils above the clay confining layer and the lower parts of the pervious berms become saturated. Those saturated soils are drained of oxygen and become anaerobic. When nitrates and nitrites encounter saturated conditions, they provide food for anaerobic bacteria that exist in those conditions. The bacteria convert nitrates and nitrites to elemental nitrogen, which has no adverse impact on surface waters or groundwater. That process, known as denitrification, is enhanced in the presence of organic material. The soils from which the berms are constructed have a considerable organic component. In addition to the denitrification that occurs in the saturated conditions in and underlying the berms, remaining nitrogen compounds that reemerge into the downstream wetlands are likely to encounter organic wetland-type soil conditions. Organic wetland soils are anaerobic in nature, and will result in further, almost immediate denitrification of the nitrates and nitrites in the emerging water. Calculation of Volume - BMPTRAINS Model The calculation of the volume necessary to capture and store excess runoff from the irrigated pastures was performed by Dr. Wanielista using the BMPTRAINS model. BMPTRAINS is a simple, easy to use spreadsheet model. Its ease of use does not suggest that it is less than reliable. The model has been used as a method of calculating storage volumes in many conditions over a period of more than 40 years. The model was used to calculate the storage volumes necessary to provide storage and treatment of runoff from fifteen “basins” that had a control or a Best Management Practice associated with them. All of the basins were calculated as being underlain by soils in poorly-drained hydrologic soil Group D, except for the basin in the vicinity of Pivot 6, which is underlain by the more well-drained soil Group A. The model assumed about percent of the property to have soil Group A soils, an assumption that is supported by the evidence. Soil moisture conditions on the property were calculated by application of data regarding rainfall events and times, the irrigation schedule, and the amount of irrigation water projected for use over a year. The soil moisture condition was used to determine the amount of water that could be stored in the on-site soils, known as the storage coefficient. Once the storage coefficient was determined, that data was used to calculate the amount of water that would be expected to run off of the North Tract, known as the curve number. The curve number is adjusted by the extent to which the storage within a soil column is filled by the application of irrigation water, making it unable to store additional rainfall. As soil storage goes down, the curve number goes up. Thus, a curve number that approaches 100 means that more water is predicted to run off. Conversely, a lower curve number means that less water is predicted to run off. The pre-development curve number for the North Tract was based on the property being an unirrigated, poor grass area. A post-development curve number was assigned to the property that reflected a wet condition representative of the irrigated soils beneath the pivots. In calculating the storage volume necessary to handle runoff from the basins, the wet condition curve number was adjusted based on the fact that there is a mixture of irrigated and unirrigated general pasture within each basin to be served by a segment of the retention berm system, and by the estimated 15 percent of the time that the irrigation areas would be in a drier condition. In addition, the number was adjusted to reflect the 8 to 10 inches of additional evapotranspiration that occurs as a result of irrigation. The BMPTRAINS model was based on average annual nutrient-loading conditions, with water quality data collected at a suitable point within Reach 22, the receiving waterbody. The effects of nutrients from the irrigated pastures on receiving waterbodies is, in terms of the model, best represented by average annual conditions, rather than a single highest-observed nutrient value. Pre-development loading figures were based on the existing use of the property as unirrigated general pasture. The pre-development phosphorus loading figure was calculated at an average event mean concentration (EMC) of 0.421 milligrams per liter (mg/l). The post—condition phosphorus loading figure was calculated at an EMC of 0.621 mg/l. Therefore, in order to achieve pre-development levels of phosphorus, treatment to achieve a reduction in phosphorus of approximately 36 percent was determined to be necessary. The pre-development nitrogen loading figure was calculated at an EMC of 2.6 mg/l. The post—condition nitrogen loading figure was calculated at an EMC of 3.3 mg/l. Therefore, in order to achieve pre-development levels of nitrogen, treatment to achieve a reduction in nitrogen of approximately 25 percent was determined to be necessary. The limiting value for the design of the retention berms is phosphorus. To achieve post-development concentrations that are equal to or less than pre-development concentrations, the treatment volume of the berm system must be sufficient to allow for the removal of 36 percent of the nutrients in water being retained and treated behind the berms, which represents the necessary percentage of phosphorus. In order to achieve the 36 percent reduction required for phosphorus, the retention berm system must be capable of retaining approximately 38 acre—feet of water from the 15 basins. In order to achieve that retention volume, a berm length of approximately 50,000 linear feet was determined to be necessary, with an average depth of retention behind the berms of one foot. The proposed length of the berms is sufficient to retain the requisite volume of water to achieve a reduction in phosphorus of 36 percent. Thus, the post-development/irrigation levels of phosphorus from runoff are expected to be no greater than pre-development/general pasture levels of phosphorus from runoff. By basing the berm length and volume on that necessary for the treatment of phosphorus, there will be storage volume that is greater than required for a 25 percent reduction in nitrogen. Thus, the post-development/irrigation levels of nitrogen from runoff are expected to be less than pre- development/general pasture levels of nitrogen from runoff. Mr. Drummond admitted that the design of the retention berms “shows there is some reduction, potentially, but it's not going to totally clean up the nutrients.” Such a total clean-up is not required. Rather, it is sufficient that there is nutrient removal to pre-development levels, so that there is no additional pollutant loading from the permitted activities. Reasonable assurance that such additional loading is not expected to occur was provided. Despite Mr. Drummond’s criticism of the BMPTRAINS model, he did not quantify nutrient loading on the North Tract, and was unable to determine whether post-development concentrations of nutrients would increase over pre-development levels. As such, there was insufficient evidence to counter the results of the BMPTRAINS modeling. Watershed Assessment Model In order to further assess potential water quantity and water quality impacts to surface water bodies, and to confirm stormwater retention area and volume necessary to meet pre-development conditions, Sleepy Creek utilized the Watershed Assessment Model (WAM). The WAM is a peer-reviewed model that is widely accepted by national, state, and local regulatory entities. The WAM was designed to simulate water balance and nutrient impacts of varying land uses. It was used in this case to simulate and provide a quantitative measure of the anticipated impacts of irrigation on receiving water bodies, including Mill Creek, Daisy Creek, the Ocklawaha River, and Silver Springs. Inputs to the model include land conditions, soil conditions, rain and climate conditions, and water conveyance systems found on the property. In order to calculate the extent to which nutrients applied to the land surface might affect receiving waters, a time series of surface water and groundwater flow is “routed” through the modeled watershed and to the various outlets from the system, all of which have assimilation algorithms that represent the types of nutrient uptakes expected to occur as water goes through the system. Simulations were performed on the North Tract in its condition prior to acquisition by Sleepy Creek, in its current “exempted improved pasture condition,” and in its proposed “post—development” pivot-irrigation condition. The simulations assessed impacts of the site conditions on surface waters at the point at which they leave the property and discharge to Mill Creek, and at the point where Mill Creek merges into the Ocklawaha River. The baseline condition for measuring changes in nutrient concentrations was determined to be that lawfully existing at the time the application was made. Had there been any suggestion of illegality or impropriety in Sleepy Creek’s actions in clearing the timber and creating improved pasture, a different baseline might be warranted. However, no such illegality or impropriety was shown, and the SJRWMD rules create no procedure for “looking back” to previous land uses and conditions that were legally changed. Thus, the “exempted improved pasture condition” nutrient levels are appropriate for comparison with irrigated pasture nutrient levels. The WAM simulations indicated that nitrogen resulting from the irrigation of the North Tract pastures would be reduced at the outflow to Mill Creek at the Reach 22 stream segment from improved pasture levels by 1.7 percent in pounds per year, and by 0.6 percent in milligrams per liter of water. The model simulations predicted a corresponding reduction at the Mill Creek outflow to the Ocklawaha River of 1.3 percent in pounds per year, and 0.5 percent in milligrams per liter of water. These levels are small, but nonetheless support a finding that the berm system is effective in reducing nitrogen from the North Tract. Furthermore, the WAM simulations showed levels of nitrogen from the irrigated pasture after the construction of the retention berms to be reduced from that present in the pre- development condition, a conclusion consistent with that derived from the BMPTRAINS model. The WAM simulations indicated that phosphorus from the irrigated North Tract pastures, measured at the outflow to Mill Creek at the Reach 22 stream segment, would be reduced from improved pasture levels by 3.7 percent in pounds per year, and by 2.6 percent in milligrams per liter of water. The model simulations predicted a corresponding reduction at the Mill Creek outflow to the Ocklawaha River of 2.5 percent in pounds per year, and 1.6 percent in milligrams per liter of water. Those levels are, again, small, but supportive of a finding of no impact from the permitted activities. The WAM simulations showed phosphorus in the Ocklawaha River at the Eureka Station after the construction of the retention berms to be slightly greater than those simulated for the pre-development condition (0.00008 mg/l) -- the only calculated increase. That level is beyond miniscule, with impacts properly characterized as “non- measurable” and “non-detectable.” In any event, total phosphorus remains well below Florida’s nutrient standards. The WAM simulations were conducted based on all of the 15 pivots operating simultaneously at full capacity. That amount is greater than what is allowed under the permit. Thus, according to Dr. Bottcher, the predicted loads are higher than those that would be generated by the permitted allocation, making his estimates “very conservative.” Dr. Bottcher’s testimony is credited. During the course of the final hearing, the accuracy of the model results was questioned based on inaccuracies in rainfall inputs due to the five-mile distance of the property from the nearest rain station. Dr. Bottcher admitted that given the dynamics of summer convection storms, confidence that the rain station rainfall measurements represent specific conditions on the North Tract is limited. However, it remains the best data available. Furthermore, Dr. Bottcher testified that even if specific data points simulated by the model differ from that recorded at the rain station, that same error carries through each of the various scenarios. Thus, for the comparative purpose of the model, the errors get “washed out.” Other testimony regarding purported inaccuracies in the WAM simulations and report were explained as being the result of errors in the parameters used to run alternative simulations or analyze Sleepy Creek’s simulations, including use of soil types that are not representative of the North Tract, and a misunderstanding of dry weight/wet weight loading rates. There was agreement among witnesses that the WAM is regarded, among individuals with expertise in modeling, as an effective tool, and was the appropriate model for use in the ERP application that is the subject of this proceeding. As a result, the undersigned accepts the WAM simulations as being representative of comparative nutrient impacts on receiving surface water bodies resulting from irrigation of the North Tract. The WAM confirmed that the proposed retention berm system will be sufficient to treat additional nutrients that may result from irrigation of the pastures, and supports a finding of reasonable assurance that water quality criteria will be met. With regard to the East Tract, the WAM simulations showed that there would be reductions in nitrogen and phosphorus loading to Daisy Creek from the conversion of the property to irrigated pasture. Those simulations were also conservative because they assumed the maximum number of cattle allowed by the nutrient balance, and did not assume the 30 percent reduction in the number of cattle under the NMP so as to allow existing elevated levels of phosphorus in the soil from the sod farm to be “mined” by vegetation. Pivot 6 The evidence in this case suggests that, unlike the majority of the North Tract, a small area on the western side of the North Tract drains to the west and north. Irrigation Pivot is within that area. Dr. Harper noted that there are some soils in hydrologic soil Group A in the vicinity of Pivot 6 that reflect soils with a deeper water table where rainfall would be expected to infiltrate into the ground. Dr. Kincaid’s particle track analysis suggested that recharge to the surficial aquifer ultimately discharges to Mill Creek, except for recharge at Pivot 11, which is accounted for by evapotranspiration, and recharge at Pivot 6. Dr. Kincaid concluded that approximately 1 percent of the recharge to the surficial aquifer beneath the North Tract found its way into the upper Floridan aquifer. Those particle tracks originated only on the far western side of the property, and implicated only Pivot 6, which is indicative of the flow divide in the Floridan aquifer. Of the 1 percent of particle tracks entering the Floridan aquifer, some ultimately discharged at the St. John’s River, the Ocklawaha River, or Mill Creek. Dr. Kincaid opined, however, that most ultimately found their way to Silver Springs. Given the previous finding that the Floridan aquifer beneath the property is within the Silver Springs springshed for less than a majority of the time, it is found that a correspondingly small fraction of the less than 1 percent of the particle tracks originating on the North Tract, perhaps a few tenths of one percent, can reach Silver Springs. Dr. Bottcher generally agreed that some small percentage of the water from the North Tract may make it to the upper Floridan aquifer, but that amount will be very small. Furthermore, that water reaching the upper Floridan aquifer would have been subject to the protection and treatment afforded by the NMP and the ERP berms. The evidence regarding the somewhat less restrictive confinement of the aquifer around Pivot 6 is not sufficient to rebut the prima facie case that the CUP modification, coupled with the ERP, will meet the District’s permitting standards. Public Interest The primary basis upon which Sleepy Creek relies to demonstrate that the CUP is “consistent with the public interest” is that Florida's economy is highly dependent upon agricultural operations in terms of jobs and economic development, and that there is a necessity of food production. Sleepy Creek could raise cattle on the property using the agriculturally-exempt improved pastures, but the economic return on the investment would be questionable without the increased quality, quantity, and reliability of grass and forage crop production resulting from the proposed irrigation. Sleepy Creek will continue to engage in agricultural activities on its properties if the CUP modification is denied. Although a typical Florida beef operation could be maintained on the property, the investment was based upon having the revenue generation allowed by grass-fed beef production in order to realize a return on its capital investment and to optimize the economic return. If the CUP modification is denied, the existing CUP will continue to allow the extraction of 1.46 mgd for use on the East Tract. The preponderance of the evidence suggests that such a use would have greater impacts on the water levels at Silver Springs, and that the continued use of the East Tract as a less stringently-controlled sod farm would have a greater likelihood of higher nutrient levels, particularly phosphorus levels which are already elevated.
Recommendation Based on the foregoing Findings of Fact and Conclusions of Law set forth herein it is RECOMMENDED that the St. Johns River Water Management District enter a final order: approving the issuance of Consumptive Use Permit No. 2-083-91926-3 to Sleepy Creek Lands, LLC on the terms and conditions set forth in the complete Permit Application for Consumptive Uses of Water and the Consumptive Use Technical Staff Report; and approving the issuance of Environmental Resource Permit No. IND-083-130588-4 to Sleepy Creek Lands, LLC on the terms and conditions set forth in the complete Joint Application for Individual and Conceptual Environmental Resource Permit and the Individual Environmental Resource Permit Technical Staff Report. DONE AND ENTERED this 29th day of April, 2015, in Tallahassee, Leon County, Florida. S E. GARY EARLY Administrative Law Judge Division of Administrative Hearings The DeSoto Building 1230 Apalachee Parkway Tallahassee, Florida 32399-3060 (850) 488-9675 Fax Filing (850) 921-6847 www.doah.state.fl.us Filed with the Clerk of the Division of Administrative Hearings this 29th day of April, 2015.
Findings Of Fact On April 2, 1981, Lee County applied to DER for a permit to construct an extension of Colonial Boulevard east to State Road 82B by dredging 4,600 cubic yards of material landward of the ordinary high water mark, and by depositing 83,000 cubic yards of fill landward of the ordinary high water mark in an area of Lee County known as the Six Mile Cypress Strand or Six Mile Cypress Slough. The permit application was made by Lee County on standard DER forms which would have been appropriate for an application under either or both Chapters 253 or 403, Florida Statutes. Additionally, Lee County tendered a permit application fee to DER sufficient to cover the cost of an application under both statutes. After review of the application, DER determined that it had no jurisdiction under Chapter 253, Florida Statutes, and refunded to Lee County that portion of the permit application fee required for a Chapter 253 permit. As indicated above, Lee County's application, on its face, reflected that no fill material or dredging was proposed waterward of the ordinary high water mark. The Six Mile Cypress Strand is a meandering swamp, approximately 44,000 acres in size, dominated by cypress trees. At periods of high water the waters of the swamp empty into Ten Mile Canal, an artificial water body which connects to Estero Bay by way of Mullock Creek, a natural stream. All water bodies involved in this proceeding are classified as Class III waters. Six Mile Cypress Strand functions as a major aquifer recharge area for the eastern central portion of Lee County. The area drained by the Strand receives approximately 54 inches of rainfall annually. The wetland vegetation and uneven contours of the Strand allow the assimilation of nutrients and reduction in turbidity and erosion which could otherwise adversely affect downstream waters. The drainage area north of the proposed project consists of approximately 5,000 acres, or 11 percent of the total drainage basin served by the Strand. The proposed roadway would cross the Strand through a corridor which contains three cypress heads, or flag ponds. These ponds generally retain water during dry periods and support a more diverse community of aquatic life than those portions of the Strand which become completely dry. At the time of final hearing in this cause, these ponds exhibited dry season characteristics and contained less than one foot of water in their deepest portions. During low water periods the Strand itself may be virtually dry except for standing water in the vicinity of cypress heads and flag ponds. Only during the rainy season, which occurs during approximately four months of the year, does the Strand contain standing water. During high water periods, however, water may flow continuously throughout the length of the Strand. During these latter periods, canoes and other such small water craft may be able to negotiate portions of the Strand. No evidence was presented, however, which would indicate that the Strand is now or has ever been utilized, or is susceptible to utilization, for commercial boat traffic. The lands in the Strand over which Lee County proposes to build the roadway were conveyed by the Trustees of the Internal Improvement Trust Fund to private ownership after having been acquired from the federal government under the Swamp and Overflow Grant Act of 1850. The Strand was not meandered in the original government survey of the area, and, in fact, the surveyor's field notes reflect that the area of the Strand was densely vegetated and crossed by several roads, including one crossing the section line in the same vicinity proposed for the Colonial Boulevard extension. The existence of this last referenced road is corroborated by biological evidence presently existing on the site, and from examinations of full infrared aerial photography of the area. It is approximately nine miles from the Strand to the nearest meander line contained in the original government survey. Further, evidence of record in this proceeding establishes that water craft may not presently be navigated from Estero Bay into the Strand because of man-made barriers, and no record evidence establishes that such navigation would have been possible at the time of Florida's admission to statehood in 1845 when the stream presumably was in its natural condition. The Department of Natural Resources was notified in accordance with DER policy, of the pendency of Lee County's application, and asserted no claim of ownership over sovereignty lands in the area of the proposed project. The design for the proposed roadway includes a system of collector and spreader swales on the upstream and downstream sides of the Strand, respectively, connected by large culverts to be located beneath the roadway. The swales and culverts are intended to minimize interruption of the Strand's hydroperiod, the natural fluctuation and flow of waters within the affected portion of the Strand. A vegetated swale system paralleling the roadway is also included in the proposed roadway design to provide treatment and nutrient uptake from storm water runoff generated from the surface of the roadway. In addition, the toe of the slope of the roadway will be replanted with native vegetation, and the edge of the fill area will be meandered to save some existing vegetation. It is anticipated that the roadway could result in runoff containing from .17 to .18 pounds per day of nitrogen, and from .01 to .07 pounds per day of phosphate. The grassy swales proposed for inclusion in the project design have the capability of assimilating from 1.8 to 3.6 pounds of these nutrients per day, thereby ensuring a significant safety factor. It can also reasonably be anticipated that the swale areas are capable of absorbing any BOD loading from the roadway surface. As a result, it can reasonably be anticipated that the construction of the project will not result in the discharge of nutrients into the Strand, and that any heavy metals will be bound in organic sediments and not result in degradation of existing water quality. Ambient water conditions in the Strand show low dissolved oxygen content together with high biochemical oxygen demand, neither of which should be exacerbated by construction of the project. No violation of water quality criteria relating to herbicides is anticipated in view of Lee County's commitment at final hearing in this cause to control vegetation by way of mowing instead of by the use of herbicides. The proposed construction will, of course, destroy aquatic vegetation in the area lying in the path or "footprint" of the roadway itself, consisting of approximately seven and one-half acres, three acres of which are predominantly cypress. However, because of the design features of the proposed roadway, including grass, collector and spreader swales and the culvert system, the anticipated impact on the hydroperiod upstream and downstream of the project, and thereby the effect on aquatic vegetation and water quality will not be significant. Construction fabric will be used to allow the road surface to be supported without demucking, thus minimizing turbidity during construction periods, although it is intended that construction be conducted during the dry season, thereby further reducing the potential for turbidity violations. Further, the detention swales which are to be equipped with French drains are designed to retain the first inch of rainfall. Culverts to be constructed on the roadway are designed to accommodate a 50-year, 24-hour storm event. The Secretary of DER issued the subject permit on August 18, 1981, without any prior notice of intent. ASSWF received notice of DER's action in the form of a complete copy of the permit on August 27, 1981. On September 2, 1981, ASSWF filed its petition requesting a formal Section 120.57(1), Florida Statutes, hearing. This petition was received by DER on September 8, 1981. ASSWF and Audubon, and the members of these organizations, use the Six Mile Cypress Strand in the vicinity of the proposed project for field trips and environmental education activities which will be impacted should the project be approved. In addition, Audubon owns property within the Strand which may also be affected by the proposed project if permitted. Intervenors, Community Council and Lehigh Acres of Florida, Inc., Ralph Marciano, Claudia Tipton and H. Mark Strong requested to be granted party status in this proceeding in support of the application. Ralph Marciano owns a business allegedly limited because of the present poor highway access to the business center of the city. Claudia Tipton owns an electrical construction business alleged to be seriously hampered because of extended transportation time in emergency trips. H. Mark Strong is a retired fire marshal and contends that paramedics are seriously hampered in transporting emergency patients to the community hospital located in Fort Myers. The Community Council of Lehigh Acres was formed to serve as a council representing the entire community of Lehigh Acres on problems and projects affecting the health, welfare, growth and prosperity of Lehigh Acres. Essentially, these intervenors assert that the general public welfare and, in some cases, their own personal business interests, will be enhanced by building the proposed roadway, thereby enhancing vehicular access to various portions of the community.
The Issue The issue presented here concerns the entitlement of the Petitioner, Turtle Lake Land Trust, to be permitted by the Respondent, State of Florida, Department of Environmental Regulation, to dredge approximately 600,000 cubic yards of material in the area known as Turtle Lake, which is located near Jackson street and Fairfield Drive, Pensacola, Florida. The purpose of this project is to create a manmade lake. The dredged material world be placed on the lake shore.
Findings Of Fact On May 9, 1979, the Respondent, State of Florida, Department of Environmental Regulation, received an environmental permit application from the Petitioner, Turtle Lake Land Trust. The details of that permit application were contained in a form provided by the Department together with attachments to that form. A copy of this permit application may be found as the Respondent's Exhibit No. 2 admitted into evidence. By this application, Turtle Lake requested that it be allowed to dredge approximately 600,000 cubic yards of material in an area known as Turtle Lake, which is located near Jackson Street and Fairfield Drive, Pensacola, Florida. The purpose of the excavation was to establish a manmade lake approximately twelve (12) feet in depth in an area which is a cypress swamp and subject to periodic inundation by water. The materials removed from the dredging would be deposited on the shores of the lake, effectively raising the ground elevation at lakeside. The dredging would intersect the groundwater on the project site. The project is part of an overall development which would involve construction of residential housing and commercial facilities in the vicinity of the lake, with the lake to be used for fishing, sailing and other water recreation. The proposal of the Petitioner was reviewed by the Department and certain timely additional requests were made from the Department to the applicant to provide information necessary to evaluate the request for permit. The exhibits dealing with the request for additional information and responses to those requests may be found as Respondent's Exhibits 3, 5, 8, 9, 10 and 11 admitted into evidence. The Department solicited comments from the Florida Game and Freshwater Fish Commission on this subject and the comments were provided by correspondence from the Executive Director of the Commission. These comments may be found in Respondent's Exhibit No. 6 admitted into evidence, which is a copy of those remarks. The Department of Environmental Regulation, in keeping with the provision Subsection 253.124(3), Florida Statutes, performed a biological survey of the project site and submitted it to the Board of County Commissioners of Escambia County, Florida, for the Board's action. A copy of the survey may be found as Respondent's Exhibit No. 7 admitted into evidence. The Escambia County Board of County Commissioners, by Resolution dated October 11, 1979, approved the project subject to action by the Respondent and the United States Corps of Engineers. A copy of this Resolution may be found as the Respondent's Exhibit No. 12 admitted into evidence. Upon consideration of the permit request, the Department of Environmental Regulation notified the applicant of its intent to deny the permit request. This Letter of Intent to Deny was issued on January 31, 1980, and a copy of it may be found as Respondent's Exhibit No. 13 admitted into evidence. This matter has been presented for consideration before the State of Florida, Division of Administrative Hearings, upon referral by the Respondent of the original Petition and has been heard after opportunity for and amendment to that Petition. The hearing was conducted on September 23, 1980, as scheduled, in keeping with the provisions of Subsection 120.57(1), Florida Statutes. The project site is located in a cypress swamp which has also been referred to as a cypress head. The southern boundary of the project site east of Fairfield Drive has an impoundment area which is fringed by pine trees and other upland species, to include gallberry, southern brackin, blackberry and oak. There is within this area aquatic vegetation dominated by Eleocharis sp. and fragrant waterlily (nymphaea odorata). The cypress head itself, which is bounded on the west by Fairfield Drive, consists of cypress, blackgum, sweetbay and cinnamon fern, fragrant waterlily and pickerel weed (pontederia lanceolata). Within the zone of the cypress head standing water may be found, the dimensions and depths of which were not established at the hearing in sufficient detail to allow further comment in these findings. Fairfield Drive serves to contain the water found in the Turtle Lake swamp on the eastern side of that roadway; however, there is an exit from the cypress head under Fairfield Drive by a series of three 24-inch culverts which connect the manmade ditches. These ditches flow into Bayou Marcus and Bayou Marcus Creek and eventually into Perdido Bay. This water connection is a direct connection and Bayou Marcus, Bayou Marcus Creek and Perdido Bay are waters of the State. Immediately adjacent to Fairfield Drive east of that roadway in the vicinity the culverts water may be found standing and could be navigated and this may be seen by Respondent's Composite Exhibit No. 14. This water which although subject to navigation wad not identified sufficiently at the hearing to establish its length and breadth. The depth was two to three feet. This water adjacent to Fairfield Drive is not within that area of the proposed excavation. At present, the storm water runoff from the Forte subdivision located to the north and east of the project site, enters the cypress head swamp and at times of periodic inundation, this storm water runoff arrives at the area of the culverts into the ditch system and into Bayou Marcus, Bayou Marcus Creek and Perdido Bay. The oils and greases, fertilizers, pesticides, nutrients and other forms of pollutants which make up the storm water constituents are somewhat filtered by the cypress head swamp as it now exists, prior to the entry of those materials into the culvert area adjacent to Fairfield Drive and from there into the transport mechanism constituted of the ditches, bayou, creek and bay. If the project is built out, the dredging will remove those flora mentioned herein and the fauna which inhabit this swamp and will remove the cypress head from future use by the fauna which normally inhabit this form of environment. It would also take away the natural filtration to be provided by the swamp in the way of removing undesirable storm water constituents from the residential runoff in Forte subdivision and the proposed development associated with the lake construction. The removal of the swamp would destroy the capacity to convert raw nutrients into usable sources of food for indigenous dawn stream organisms. As can be seen in the Petitioner's Exhibit No. 1, the existing water table at the site is approximately 23 feet and ordinary highwater elevation has been measured at 24 feet with an existing grade of 21 feet. If the lake were excavated, the lake would show a water table with an elevation of 20 feet. The berm or dykes around the lake would have an elevation of 24 feet. Storm water from the current subdivision and the residential and commercial build-out associated with the project in question would be carried through underground storm water piping into four holding areas which have been referred to by the applicant as drainage corridors and retention area. These areas are separated from the lake by siltation screens and will serve the function of filtering out some storm water constituents which are solid particulates. The constituents which have been dissolved will flow through the siltation screen devices and into the lake proper. When the lake rises to a depth of 23 feet, the excess water will he transported through a proposed ditch into the area of the three culverts under Fairfield Drive and via those manmade conveyances into Bayou Marcus, Bayou Marcus Creek and Perdido Bay. Those storm water constituents such as oils and greases, fertilizers, pesticides, nutrients and other forms of pollutants which have not settled or been filtered will be transported through this system and deposited into waters of the State. In this connection, the drainage corridor and retention areas are not designed for long-term retention; they are primarily for short-term detention, depending on the amount of loading from the storm water runoff. The only pre-treatment associated with the storm water runoff is that filtration that occurs in the drainage corridor and retention area. (There was some discussion of possible gravel filters in conjunction with the drainage corridor and retention area but they were not part of the plan submitted to the Department in the process of project review.) In addition to the introduction of the storm water contaminants into the waters adjacent to Fairfield Drive at the area of the culverts and the bayou, creek and bay, these contaminants will be introduced into the ground water in the lake proper Although some increase in retention of storm water runoff may be expected, if the project were built, there would be a significant increase in the introduction of dissolved contaminants into waters over which the Respondent has jurisdiction, i.e., Bayou Marcus, Bayou Marcus Creek and Perdido Bay. Increases in these areas will occur in biochemical oxygen demand and undesirable nutrient and dissolved oxygen levels will decrease if this project is constructed. In association with this change, an increase in nuisance species would occur. The Petitioner has failed to do any background sampling to establish the natural background levels of the aforementioned conditions in waters of the State in order to identify whether water quality in the receiving waters would be degraded from existing conditions to the extent of violating the Department's water quality criteria.
Recommendation Based upon a full consideration of the facts as presented and the Conclusions of Law reached in this matter, it is RECOMMENDED that the Secretary of the State of Florida, Department of Environmental Regulation, deny the Petitioner a dredge and fill permit pursuant to Rule 17-4.28, Florida Administrative Code; a construction, operating and maintenance permit pursuant to Section 403.087, Florida Statutes; a ground water permit in accordance with Rules 17-3.071, Florida Administrative Code, and 17- 4.245, Florida Administrative Code; and be it further RECOMMENDED that the Secretary take no further action to require a permit(s) as might be indicated in keeping with Chapter 253, Florida statutes. 1/ DONE AND ENTERED this 22nd day of October, 1980, in Tallahassee, Florida. CHARLES C. ADAMS Hearing Officer Division of Administrative Hearings The Collins Building Tallahassee, Florida 32301 (904) 488-9675 Filed with the Clerk of the Division of Administrative Hearings this 22nd day of October, 1980.
Findings Of Fact The Respondent Harper Brothers, Inc., operates a farming and limestone mining operation in Lee County, Florida. It has filed a surface water management permit application for a project to be operated as an adjunct to the mining operation at Green Meadows Mine owned by Harper Brothers. The Respondent Harper Brothers retained consultants in the general fields of engineering, hydrology, surface water management and hydraulics to assist in the formulation of a surface water management plan for the development and operation of their mining site. As a culmination of this effort, Respondent Harper Brothers filed its application for a surface water management system, and permit therefor, with the district. The SFWMD (District), upon receiving applications for surface water management systems and related permits evaluates water quantity, quality and various environmental concerns related to water resources mandated by Chapter 373, Florida Statutes, Chapter 40E, Florida Administrative Code and Chapter 17-3, Florida Administrative Code. Such an application must meet district criteria contained in the statutes and rules in order for the surface water management permit to be issued. The district's staff makes a recommendation to its governing board for approval or denial of such permits, and often with related conditions attached. In the instant case, after review of the various water quality and environmental criteria, the recommendation of the governing board of the agency was for approval of the permit with certain conditions. THE PROJECT The project which is the subject matter of this proceeding is a rock mining operation for the mining of limestone in Lee County, Florida. The application is for the construction and operation of a surface water management system to serve a 405-acre mining operation which, in essence, involves the management of the water produced by "de-watering," or pumping-out of the active rock pit, through use of a retention area, dykes, pumps, culverts and a weir structure; with a view toward keeping the water pumped from the pit (dewatering water), and stormwaters which fall on the site, contained in a retention area which has been designed to retain all the dewatering discharge. The only water discharge envisioned off the site represents the volume of stormwater which falls thereon. The stormwater which would be discharged off the site is that water which actually falls as rain onto the retention area as well as stormwater that is pumped into the retention area from the pit through the use of the two existing dewatering pumps. During excavation of the rock pit, water is discharged from the pit into the on-site retention area through use of these two pumps. An existing weir structure allows some water from the retention area to flow through a ditch to a small lake on the Respondent Harper Brothers' property. Water from the lake is used at the rock mine and some existing farmland of Harper Brothers is supplied irrigation water from it. At present, some farmland is supplied irrigation water through a pump from the retention area and some receives irrigation from the mine pit itself through another pump. The remaining water discharged from the mine pit is held in the retention area where it infiltrates into the ground. The retention area will be surrounded by 3.5-foot high by 12-foot wide dykes. Along the south side of the retention area a double dyke system is proposed. The outer dyke will also be utilized as a road and varies from three to four feet in height with a top width of 36 feet, which will be paved. Stormwater discharged from the retention area would flow through an outfall structure located at a crest elevation of 26.75 feet, National Geodetic Vertical Datum (NGVD). The controlled elevation in the retention area is 26.3 feet NGVD which is maintained by a 3.83-foot wide "bleeder notch." Discharge from this structure would then be routed westward between double dykes under the Harper Brothers' "north-south road" down a swale on the north side of its entrance road to "no-name" slough, the ultimate "receiving waters." It was established by expert witness Missimer, for Respondent Harper Brothers, that the dewatering discharge which would be held in the retention area will infiltrate into the ground at a rate of approximately 43,000 gallons per day per acre per a one-foot elevation in water level. The rate of infiltration in the ground is directly proportional to the "head" increase so that for a two-foot water level with the resulting increased pressure or "head," the infiltration rate would be 86,000 gallons per day per acre. Based on the presently permitted maximum monthly withdrawal rate, at a point of equilibrium would be reached at a water depth in the retention area of 1.3 feet, whereby the rate of water pumped into the retention area equals the rate of infiltration into the ground without considering additionally any evaporation into the atmosphere. Thus, the bleeder notch would be set at the above elevation so that all dewatering discharges from the mine (which may contain rock and other sediments) are effectively retained on site. PRE-DEVELOPMENT VS. POST-DEVELOPMENT DISCHARGES The SF design criteria contained in Chapter 40E, Florida Administrative Code, the applicability of which is not in dispute in this proceeding, provides that the volume of stormwater discharged from such a project cannot exceed the volume of such discharges from the same surface area in its pre-development condition. The development referred to in this instance is, of course, the development of the mine and the related retention area and other water management installations or "improvements." Expert witnesses Glaubitz and Serra testifying for the Respondent Harper Brothers and SFWMD established that the quantity of pre-development discharge from the subject site or surface area, was calculated based upon a "design storm event." This means that the pre-development discharge from the Harper Brothers' mine site was calculated, based upon reviews of the watershed boundary, the slope, the vegetation types, and the hydrologic length of the watershed in the geographical area, as well as through the use of aerial photography and U.S. Geological Survey maps, to show the amounts of surface and stormwaters discharged from this site, or its pre-development surface area, during a 25-year, 3-day duration storm event, meaning a storm lasting for a duration of three days of rain of a severity that has been experienced, according to meteorological records, an average of once in 25 years in the subject geographical area. Based upon these calculations of pre-development discharge rate or volume during a 25-year, 3-day storm event, the pre- development discharge from the Harper Brothers' mine site was calculated to be a volume of 10 cubic feet of water per second (cfs). "Post-development discharge" is the rate of discharge taking into account the same 25-year, 3-day storm event, which is allowed to discharge off the project site after development is completed. The calculation of post- development discharge was computed by taking into account such factors as soil storage capability, stage discharge and calculation of the amount of retention or detention of storm water required on the site. Thus, the calculated post- development discharge of stormwater from the site as it is proposed to be designed, is nine cubic feet per second during such a 25-year, 3-day severe storm, which capability is designed into the proposed project. Thus, the post- development discharge of stormwater off the project site does not exceed, and in fact is less than, the pre-development discharge of stormwater from the site. Included within the calculations by these two experts, concerning post-development volume of stormwater to be discharged, is an analysis of the quantity of water to be retained in the retention area of the proposed project. The discharge from the retention area is controlled by the above-mentioned weir and bleeder notch. The retention area proposed by the applicant is to be used both for discharge of dewatering water from the mine pit (under the previously issued industrial water permit) as well as for retention of stormwater. This weir and bleeder notch is designed to be at an elevation which only allows discharge of a volume of water representing the volume of stormwater entering the retention area over a given period of time, and not the dewatering water from the site, which may contain rock, dust in suspension, and other sediments. The previous permit granted to the applicant, as well as the permit sought in this proceeding, would require (as all parties agree) that the dewatering volume of water, representing the water pumped from the mine pit, will totally remain on the site. The project as designed is reasonably assured to be capable of retaining all such dewatering mine pit water on-site. One critical factor considered in determining the design and site for the retention area (155 acres) and in setting the bleeder notch elevation for discharge of stormwater volume, is the infiltration rate from the retention area into the ground beneath it. The Respondent Harper Brothers established (through these uncontradicted expert witnesses) that the infiltration rate is 43,000 gallons per day per acre of the retention area for a one-foot elevation of water in that retention area. One of the factors computed into the infiltration rate calculation is the "transmissivity rate." The transmissivity rate is 200,000 gallons per day per foot in the shallow or surface aquifer at the project site. Petitioner's expert, Mr. Bruns, conceded that if that rate is correct, as it was established to be, that the post-development volume of discharge leaving the project site would not exceed the pre-development volume of discharge, if the maximum pumpage rate into the retention area from the pit did not exceed 8.5 million gallons per day, and it is so found. Parenthetically, it should be noted that the Petitioner presented no testimony of its own concerning infiltration rates or transmissivity rates. Neither did the Petitioner's expert Mr. Bruns make any calculations of quantity of discharge from the site in either a pre-development condition or post-development condition, nor was a water management or hydrologic study of the drainage basin (approximately 6 square miles) made by Petitioner's expert witness, to assist in analyzing quantity of discharge. Under certain hypothetical conditions it would be possible for dewatering discharge water from the mine, as a volume of water, to be discharged, commingled with stormwater discharge, from the retention area. Thomas Missimer, testifying as an expert witness in the fields of hydrology and water quality for Harper Brothers, was uncontradicted. His studies and calculatiops in evidence established that, with regard to the infiltration rate downward into the soil under the retention area, and the amount of water pumped into the retention area, that equilibrium is reached when pumping into the retention area reaches 8.5 million gallons per day. That is, approximately 8.5 million gallons per day infiltrate downward into the soil and thus leave the retention area and thus an 8.5 million gallon pumpage rate per day would result in a static water level in the retention area, aside from evaporation. If the Respondent pumped in excess of this figure, which might be possible under its present mine dewatering industrial use permit, then the pumpage figure might exceed the equilibrium figure and cause the volume of water discharged off the site to exceed that volume which only represents stormwater. Accordingly, the parties stipulated that the maximum daily pumpage rate of 8.5 million gallons per day would be included as a condition in the permit, if it were issued to the Respondent, such that, based upon the uncontradicted infiltration data, that the limitation to a maximum pumpage rate into the retention area of 8.5 million gallons per day from the mine pit, would be permissible. In view of this stipulation, Petitioner withdrew its contention that the post-development volume of discharge water leaving the site would exceed the pre-development volume of discharge. It was thus shown that at the maximum pumpage rate of 8.5 million gallons per day no mine dewatering discharge (as a volume of water) will leave the retention area. NON-ALTERATION OF HISTORICAL DRAINAGE PATTERNS The Petitioners also contend that the supposed alteration of historical drainage patterns by this development at the site will cause additional flooding to the Petitioner's access road to their property (residence and nursery) by the road known as Mallard Lane. In that connection, the historic pattern of stormwater discharge off the project site or its geographical area, is figured into the analysis of pre-development water volume discharge versus post-development discharge. This project, like others of its type, is mandated by the rules at issue to not alter the pre-development patterns of water discharge off the site area so as to adversely affect the property and landowners off the site. Although the pre-development discharge is generally observed and calculated by looking at a site before the development involved in a permit application takes place, in the instant case, Harper Brothers, Inc., by the authority of its previously issued dewatering and industrial water use permit had already initiated its mining operation and so pre-development conditions as they relate to this permit were not directly, physically observable. Accordingly, a hydrologic study of the drainage basin in which this project is located was performed, and, in conjunction with the use of aerial photography and U.S.G.S. quadrangle maps, the perimeter of the basin was determined and an analysis of the historical pattern of flow in the drainage basin was done. The general flow of water in the drainage basin historically is from northeast to southwest, with an ultimate discharge into the "no-name" slough, a "cypress head" or slough which generally flows in a westerly and southwesterly direction from the area immediately adjacent to the project site. Internally within this drainage basin, some old pre-development north/south dykes have blocked some of the westerly flow which historically existed at the site, thereby causing some of the water to flow in a northwesterly direction until it reaches the northern end of the north/south dykes, thence returning to the generally southwesterly drainage pattern, ultimately ending up in the slough system. A small area of farm fields was located north of the east/west access road to the site, and southerly of an existing east/west line of farm dykes, and may have drained in a southerly direction before development. There is currently no information and no evidence of record concerning how this farm field area was drained. The drainage from this area now, however, is insignificant and is calculated at approximately one cubic foot per second as a maximum rate. As the calculated post-development discharge from this project site is approximately 9 cubic feet per second, even if it be assumed that the drainage from the old farm field should be added to the post-development discharge rate from the project site itself, such an addition would only equal and not exceed the historic, pre-development discharge rate of ten cubic feet per second. The flows in a southerly direction are currently blocked by the east/west access road to the Harper Brothers' site, used by Harper Brothers. In a predevelopment condition however, the same situation existed since the southerly flow was similarly blocked by farm dykes which existed in the pre- development condition. The proposed facility is designed to have stormwater which falls on the entire project site to be pumped into the retention area. The volume of stormwater permitted to be discharged will discharge from the retention area via the above-mentioned outfall structure and will be routed westward through the double-dyke system down a drainage swale on the north side of the entrance road, and ultimately into the no-name slough. Thus, the historic drainage pattern of the basin from the northeast to the southwest will not be significantly altered by the project as designed and proposed. The project generally preserves this historic drainage pattern by discharging the drainage within the basin into the "no-name" slough as occurred in the pre-development condition which, when the above-described pre-development and post-development discharge rates are compared reveals that there will be no adverse alteration in terms of either a dearth of or excess of water supply to this natural slough system. The Petitioner's access road, North Mallard Lane, running from north to south, accessing Petitioner's property west of the project site, is indeed subject to inundation, but was subject to such inundation in the pre-development condition of the project site. This is because the slough crosses this access road. Since the post-development condition does not alter the historic patterns of drainage to any significant degree, and does not represent an alteration in the volume of discharge from the project site area over that in the historic, pre-development condition, no additional flooding to the Petitioner's access road will be caused as a result of the project installation and operation. The flooding being caused to the Petitioner's access road, indeed was shown to be related in part to culverts of insufficient size installed by Lee County, so that water tends to stand on the road surface as opposed to draining under and away from it. NON-ALTERATION OF THE pH OF RECEIVING WATERS It is undisputed that the subject project, like all such projects, under the permitting authority of SFWMD, must meet state water quality criteria contained in Chapter 17-3, Florida Administrative Code. The design of such a surface water management system must include "best management practices" (BMP's) in order to satisfy the district's design criteria. BMP's are techniques which are incorporated into the design of such a system to enhance water quality such as the use of swales, retention ponds, and gravity structures. Given that the project will utilize a retention area, grassed swales and other well accepted water management structures, the design was shown to comport with "best management practices." Water quality measurements for the only water quality parameter in dispute, that of pH, were taken on the project site using standard, accepted scientific methods and U.S. Geological Survey Water Quality Standard sampling techniques. The tests revealed a pH in the retention area itself of 7.91 pH units. The pH in the pit area was 7.8 pH units and in the off-site water in the slough, the pH was 7.3 units. The water discharge from the retention area would be a combination of stormwater (rain water) which is approximately 6 pH units in the geographical area involved, and the retention area water at approximately 7.8 pH units. The precise pH of this discharge water would depend on the quantities of water from each source, but was shown to be almost neutral or approximately at a pH of 7. Thus, the discharge from the retention area of the commingled dewatering and stormwater, if such occurs, will not alter the receiving waters one full pH unit. Upon issuance of the permit, the applicant will still have to comply on a continuing basis with the water quality parameters of Chapter 17-3, Florida Administrative Code, and the staff of SFWMD will continue water quality monitoring after the permit is issued. There has thus been no showing that commingling of dewatering water and stormwater in the retention area and the discharge of such commingled waters to the receiving waters of "no-name" slough would affect the pH of that receiving water in a manner to exceed existing, permissible pH parameters and adversely affect water quality. Expert witness Serra testifying for the district as well as for Harper Brothers, has studied similar mining operations. Such operations, utilizing similar water management procedures, have not caused any water quality violations related to discharges of commingled dewatering and stormwater, including no violations of the pH parameters. Finally, near the conclusion of the proceeding, Petitioner, in effect, abandoned its dispute regarding the issue of compliance with the pH water quality parameter.
Recommendation Having considered the foregoing Findings of Fact and Conclusions of Law, the candor and demeanor of the witnesses, the evidence of record and the pleadings and arguments of the parties, it is, therefore RECOMMENDED: That a Final Order be entered by the South Florida Water Management District authorizing issuance of a surface water management permit to the applicant herein for the proposed surface water management system, imposing upon the applicants the limiting and special conditions enumerated in the district staff report depicted in Exhibit 2 and incorporated by reference herein, and additionally, those two special conditions set forth immediately above. DONE and ENTERED this 17th day of August 1984, in Tallahassee, Florida. P. MICHAEL RUFF Hearing Officer Division of Administrative Hearings The Oakland Building 2009 Apalachee Parkway Tallahassee, Florida 32399-1550 (904) 488-9675 FILED with the Clerk of the Division of Administrative Hearings this 17th day of August 1984. COPIES FURNISHED: W. E. Connery Gulf Hydro-Farms, Inc. Post Office Boa 148 Estero, Florida 33928 John A. Noland, Esquire Post Office Box 280 Fort Myers, Florida 33902 Michael S. Tammaro, Esquire South Florida Water Management District Post Office Box "V" West Palm Beach, Florida 33403-4238 John R. Maloy, Executive Director South Florida Water Management District Post Office Box "V" West Palm Beach, Florida 33402
