Findings Of Fact The subject application requests a water use permit from the Central and Southern Florida Flood Control District (FCD) for the supplemental irrigation of 145 acres of citrus lands located in Orange County. Received into evidence at the hearing were the public notice of hearing appearing in the Sentinel Star, permit application number 21424 with an attached report and the Staff Report of the FCD, prepared by Nagendra Khanal. The applicant requested an annual allocation of water in the amount of 120.15 acre-feet or 9.94 inches per year, for a period of twenty (20) years. The Staff Report recommends the issuance of a permit for said amount, with maximum monthly pumpages not to exceed 49.8 acre-feet or 4.13 inches, the permit to expire on January 15, 1978. Several further special provisions were recommended on pages 4 & 5 of the Staff Report, which report is attached hereto. There is no dispute between the applicant and the FCD over the technical aspects of the Staff Report. The protests of the applicant center around the length of the permit and some of the special provisions recommended in the Staff Report, which the applicant feels are vague and ambiguous. Mr. James A. Hinson, the applicant's corporate secretary, felt that the FCD had sufficient data and statistics as to the water resources and agricultural usage within the area to sustain the granting of a twenty year permit. It was further felt that the issuance of a two-year permit for the purpose of gathering information as to the quantity of use would tend to prompt higher usage and even lead to falsification of pumpage records on the part of agricultural users so as to assure the issuance of future permits. The applicant was also concerned with the costs of applying for another permit in two years. Mr. Nagendra Khanal, a hydrologist with the FCD, explained that the purpose of the two-year permit was to obtain information from agricultural users in the area as to the amount of water used and the effect of such usage on the Florida aquifer system. Since the outset of regulatory provisions, the FCD has set the same termination date for each permit for agricultural use within each of the basins. At that expiration time, the pumpage records for all users in the area will be established and present experimental estimates can then be compared with actual usage. Little is known by the FCD about how the Florida aquifer system operates and the data presently in use are experimental. Since all permits within each basin will expire on the same date, the entire basin can then be evaluated at one point in time. It was felt that if falsification of pumpage records were to occur, it could probably be detected by data currently available to the FCD. It was further opined by Mr. Khanal that at, the expiration date of all permits issued in each basin, an automatic conversion into new permits would occur at little or no cost to the applicant. With regard to the special provisions recommended in the Staff Report, Mr. Hinson expressed concern over the manner of compliance. Specifically, he desired more information on the type of equipment or devises required by the FCD when it calls for "minimum head pressures", and "a measuring device on each of the three wells." He also desired information as to the times of year the water quality analyses were to be performed. Mr. Khanal explained that no regulatory criteria had been established by the FCD with regard to pumpage and that the minimum type of measuring device, such as a time clock, on each of the wells would suffice. Further specifications will be supplied to the applicant upon request. It was explained by Khanal that the water quality analyses should be performed once before the rainy season (at the end of May) and once after the rainy season (at the end of October). There was some confusion over the inclusion of the parameter of "specific conductivity" within the definition of a standard complete water quality analysis. Finally, Mr. Khanal listed two amendments to be made in the Staff Report. On page 2, under "B. Existing Facilities", "3,500 gpm" should read "3,600 gpm." The last item on the chart on page 3 of the Staff Report should read "2 in 10 Year Drought" in lieu of "1 in 10 Year Drought."
Recommendation Based upon the findings of fact and conclusions of law recited above, it is recommended that Application No. 21424 be granted and that a permit be issued in accordance with the recommendations and provisions set forth in the Staff Report, as amended. Due to the apparent confusion over the inclusion of "specific conductivity" as a parameter to be included within the definition of a standard complete analysis, it is further recommended that the Staff make further inquiry into its necessity. If the Staff then concludes that "specific conductivity" is necessary to obtain a complete water quality analysis, it is recommended that it remain on the list of parameters. Respectfully submitted this 5th day of March, 1976, in Tallahassee, Florida. DIANE D. TREMOR Hearing Officer Division of Administrative Hearings The DeSoto Building 1230 Apalachee Parkway Tallahassee, Florida 32399-1550 (904) 488-9675 Filed with the Clerk of the Division of Administrative Hearings this 5th day of March, 1976 COPIES FURNISHED: Thomas C. Garwood, Jr., Esquire Akerman, Senterfitt, Eidson and Wharton 17th Floor CNA Building Orlando, Florida Stephen A. Walker, Esquire Post Office Box V West Palm Beach, Florida 33402
Findings Of Fact The Navy intends to construct a 160 unit residential housing project at Key West, Florida. This project will be built on a 25.89 acre site that is bordered on the north by Eaton Street and Palm Avenue, on the east by Eisenhower Drive, on the south by Angela Street, and on the west by White Street. As designed, the completed site will have approximately 58 percent pervious area and 42 percent impervious area. In its undeveloped state, storm water runoff for the Peary Court site sheetflows to the north where a concrete containment wall directs the runoff to an existing inlet and storm drain. This existing inlet and drain connects to the City of Key West's drainage system at the corner of Palm Avenue and Eisenhower Drive and eventually discharges into a nearby surface water body known as "Garrison Bight". Runoff capacity that cannot be managed by the City of Key West's drainage system collects and discharges onto Palm Avenue. On September 21, 1992, the Navy submitted its initial permit application to the Department for the issuance of seven Class V storm water injection well permits. The seven injection wells are designed to function as part of a surface water management system. The storm water management system must be permitted by the South Florida Water Management District (SFWMD). The injection wells must be permitted by the Department. The proposed surface water management system for Peary Court was designed to meet SFWMD permitting criteria and will utilize dry detention with filtration through grassy swales and grassy retention ponds for the pretreatment of the project's storm water runoff. The Navy applied to SFWMD for a permit for the proposed surface water management system. The SFWMD tentatively approved the application. Thereafter, a challenge was filed to the proposed agency action, and the matter was referred to the Division of Administrative Hearings and assigned DOAH Case No. 92-6254. A Recommended Order was entered in DOAH Case NO. 92-6254 which recommended that the surface water management system be approved. A Final Order has been entered in DOAH Case 92-6254 by the SFWMD approving the Navy's surface water management system permit for Peary Court. The period for appeals of the Final Order has not expired as of the entry of this Recommended Order. The Department gave notice on December 4, 1992, of its intent to issue the permits to the Navy for not more than seven injection wells to be operated as part of the Peary Court surface water management system. The permit the Department intends to issue contains 16 general conditions and 10 specific conditions. None of the conditions are being challenged by the Navy. Among the specific conditions are the following: This permit is valid only for the specific process and operation indicated in the application. Any changes in these which may result in altered characteristics of the discharge are not permitted without the prior approval of the Department and modification of this permit. The discharge authorized by this permit shall be consistent with the water quality standards set forth in Chapter 17-3, F.A.C. [S]hould conditions in the receiving body warrant, the Permittee may be required by the Department to upgrade, reduce or cease discharge of run-off approved by this permit, and adopt an alternative method of disposal within a reasonable time. The permittee shall establish a periodic maintenance program that assures the integrity of the storm water drainage system to function as designed. "Detention" as that term is used in the context of surface water management systems is the temporary detaining of water on a site prior to eventual offsite discharge. "Retention" is the permanent retaining of water on a site with no offsite discharge. The proposed surface water management system will utilize grassy inlets and swales to direct runoff into four large grassy detention ponds as well as smaller pond areas prior to discharge from the surface water management system. Storm water that does not evaporate or percolate into the ground will be discharged through a v-notch weir discharge structure into Garrison Bight or to ground waters via the proposed injection wells. The detention ponds are connected with one another and act as one system so that the ponds fill and empty at the same rate. The surface water management system for Peary Court is designed so that there will be no offsite discharge during the first inch of a rainfall event. The on-site detention of the first inch of rainfall results in the removal of approximately 90 percent of all pollutants prior to discharge through what is referred to as "first flush". With the exception of one cul-de-sac in the northeast corner of the project near the v-notch weir, all runoff draining into the proposed detention areas will flow through grassy swales and inlets. The proposed grassy inlets and swales will transport runoff to the grassy detention ponds at a rate of one quarter to one half inch per second and thus will provide adequate filtration for the storm water runoff before it gets to the detention pond. The storm water that comes from the cul-de-sac will include storm water from Palm Avenue, which is adjacent to the Peary Court site. This storm water will travel through at least 50 feet through pipe before entering the detention pond and will receive little filtration prior to entering the detention pond. The water from the cul-de-sac will receive some filtration in the detention pond. The system is designed to detain the amount of storm water runoff which would be expected from a twenty-five year, three day storm event. Such a storm event in Key West would be expected to represent roughly a six to seven inch rainfall. The proposed injection wells are Class V, Group 5 storm water drainage wells pursuant to Rule, 17-28.130(1)(e)5, Florida Administrative Code, and meet all pertinent construction standards. The proposed injection wells will be located on the north side of Peary Court. The exact location and number of injection wells to be utilized will be determined by data received from conducting a well capacity test after the installation of the first injection well. The pre-development runoff from Peary Court was 55 cubic feet per second (cfs). Pursuant to SFWMD permitting criteria, the post-development discharge cannot exceed the pre-development discharge. The discharge capacity from the v-notch weir into Garrison Bight is 11 cfs. Consequently, the maximum discharge from the injection wells will be 44 cfs. The proposed location and number of wells are based on conservative estimates. No allowance is made in the surface water management system for naturally occurring evaporation or percolation. Discharges down the proposed injection wells is not continuous and is only expected to occur during rare storm events. The bottom of the detention ponds will be set at elevation 1.0 NGVD. The water inlets for the injection wells will be set at elevation 1.5 NGVD. Because the proposed water inlet for the v-notch weir discharge structure will be set at elevation 1 NGVD, offsite discharge to Garrison Bight will begin through the v-notch weir before any discharge through the injection wells. Discharge of storm water down the proposed injection wells will only occur when water levels in the ponds reach six inches (0.5 NGVD). The proposed wells will be drilled to a depth of ninety feet with grouted steel casing extending down to a depth of sixty feet below land surface. The wells are to be grouted to ensure that there will be no vertical migration along the borehole. Each injection well will have a concrete wellhead with a built in baffle to prevent floating debris, silt or sand from entering the well. The baffle will not prevent contaminants that are suspended in the storm water from being discharged through the injection well. The Navy provided a bedrock assessment and groundwater quality profile by drilling two exploratory boreholes at Peary Court. The subsurface strata underlying Key West consists of distinct horizontal layers of Miami Oolite and Key Largo Limestone. Beneath Peary Court, Miami Oolite extends from ground surface down to between forty-seven and fifty feet below land surface. The Key Largo Limestone extends below the Miami Oolite formation. Key Largo Limestone consists mainly of coral and limestone and is generally more porous and more permeable than Miami Oolite. Miami Oolite consists mainly of small sand like particles cemented together. Both formations can contain clays and lime or silicate muds. The Miami Oolite layer is not considered by the Department to be a "confining layer" as that term is used in the Department's rules determining the classification of wells because of its limited ability to retard the flow of fluids. The injection zone for the proposed injection wells will be between 60 to 90 feet below land surface, which is in the Key Largo Limestone formation. Ground water in the injection zone contains 35,000 to 40,000 milligrams per liter (mg/l) of total dissolved solids (TDS). Ground water in the injection zone is classified under Department rules as G-III because it is ground water having more than 10,000 mg/l TDS. A freshwater lens (the Key West lens) underlies a portion of Key West. The United States Geological Survey (USGS) documented the water quality and approximate size of the lens in 1990 by analyzing water samples taken from shallow monitoring wells. The results were compiled into what is referred to as the McKenzie Report. This thin layer of freshwater, varying in depths from two to ten feet, sits on top of a transition zone between the seawater and freshwater. This transition extends downward to approximately 40 feet below the surface of the land. The freshwater lens does not underlie Peary Court. The Key West lens is classified under Department rules as G-II because it is ground water having less than 10,000 mg/l TDS. The McKenzie Report documents the size of the lens using chloride concentration contours, with 250 mg/l chloride at the center of the lens out to 5,000 mg/l at the edge of the lens. Chloride concentrations of 250 mg/l or less is the standard maximum chloride level for drinking water. The locations of the proposed injection wells are outside of the 5,000 mg/l chloride concentration contour. There is no potable water source in the immediate vicinity of the proposed wells. The proposed injection wells will not be installed through G-II ground water (Key West lens), nor will it inject storm water into G-II ground water. Movement of water in the injection zone will be governed by two forces, pressure gradients and buoyancy factors. The injected water is more buoyant than sea water because it is less dense. Consequently, there will be a tendency for the injected water to move upward. The injected water also moves outward along pressure gradients associated with the Key West lens. The Key West Lens is thicker in the center and thinner towards the sides. Because of this fact, it has varying pressure gradients which is greater toward the center and will cause the injected water to move away from the Key West Lens. It is an established geologic principle that subsurface sedimentary rock formations generally favor lateral movement of water over vertical movement. Because the Key Largo Limestone strata is more porous and more permeable than the Miami Oolite strata and because of the pressure gradients of the Key West Lens, the storm water injected through the injection wells will move laterally away from the Key West Lens and towards Florida Bay. Tidal action will contribute toward the movement of the injected storm water away from the Key West Lens. It is not expected that the injected storm water will reach the Key West lens. When the relative densities of the injected water and the ground water equalize, upward movement of the storm water will cease. Subsurface tidal flows will have a washing machine effect on the discharging storm waters that will enhance the mixing and dispersion of the storm water. The mixing and dispersion of the storm water caused by subsurface tidal flows serve to reduce the buoyancy of the storm water, which retards its upward movement. The Department has relied, in part, on the review by SFWMD of the surface water management system in reaching the conclusion that the storm water discharged through the wells will meet water quality criteria after having moved through the surface water management system. When the Navy first applied for the surface water management system permit, it was believed that Garrison Bight had been designated as an Outstanding Florida Water. Consequently, SFWMD required that the surface water management system be designed to meet discharge criteria applicable to Outstanding Florida Waters. Notwithstanding such design, it can still be expected that minute levels of various contaminants typically found in storm water, such as heavy metals and those contained in pesticides, petroleum products, and animal waste, will remain in the discharged storm water. Saline ground waters contain microorganisms which live off trace amounts of organic material. Highly active zones of microorganisms, such as those found around injection wells, feed on and effectively break down organic compounds, including petroleum constituents, which may be discharged from injection wells. Any heavy metals that may remain in the storm water when it is injected through the injection wells will likely be absorbed onto the minute clay particles present in the Key Largo Limestone and Miami Oolite. Other natural constituents found in ground water will precipitate phosphorus and will break down nitrates. The Department's review of the Navy's application included an analysis of the proposed injection well design, the geologic, hydrogeologic, and water quality data and test reports provided in the permit application, and certain geologic literature, including the McKenzie report and other studies. Because of the known existence of the Key West lens, the Department required the Navy to submit more water quality and geologic data than would normally be submitted for a Class V injection well. Rule 17-28.520, Florida Administrative Code, provides, in pertinent part, as follows: The variety of Class V wells and their uses dictate a variety of construction designs consistent with those uses, and precludes specific construction standards for each type of Class V well outlined in this rule. However, a well must be designed and constructed for its intended use, in accordance with good engineering practices, and the design and construction must be approved by the Department. Rule 17-28.530, Florida Administrative Code, provides, in pertinent part, as follows: All Class V wells shall be operated in such a manner that they do not present a hazard to an underground source of drinking water. ... Rule 17-28.620, Florida Administrative Code, provides, in pertinent part, as follows: All owners of operators of Class V wells shall obtain a two-part Construction/Clearance permit ... The applicant shall submit to the Department at least the following information before receiving permission to construct: * * * Well location and depth, and casing diameter and depth for all water supply wells on the applicant's property, and well location for all water supply wells of public record within a 1000 foot radius of the proposed well; Description and use of proposed injection system, including type and construction of injection wells, physical and chemical analyses, estimated quantity, pertinent bacteriological analyses of injected fluid, and any proposed pretreatment; Proposed drilling and testing plan for any exploratory borehole or exploratory well proposed for the purpose of determining feasibility of Class V well injection at the site; If the flow of surface or other waters is directed by ditches or other artificial methods to the well, a delineation of the area drained by these features shall be provided. Rule 17-28.610(2), Florida Administrative Code, prohibits the injection of contaminants into underground sources of drinking water where the contaminant may cause a violation of any primary drinking water regulations under Chapter 403, Florida Statutes, and Chapter 17-22, Florida Administrative Code, or where the contaminants may adversely affect the health of persons. The Navy has provided reasonable assurances that the injected storm water will have no effect on G-II groundwater, that the injected storm water will have little or no effect on the water quality of G-III groundwater, and that the injected storm water will not result in a violation of the minimum criteria and standards for G-II and G-III groundwater. Further, the Navy has provide reasonable assurances that the proposed injection wells will not cause or contribute to any adverse effects on public health. These findings are based, in part, on the design of the surface water management system, on the different permeability of the geologic formations that underlie Key West, the biological and chemical factors in the saline environment into which the storm water will be injected, and on the pressure gradients and other dynamics of the Key West Lens. Although there was some disagreement among the various expert witnesses who testified in this proceeding, the most persuasive testimony establishes that the water discharged through the injection wells will not reach the Key West lens and that the water will likely have no detectable levels of contaminants if it ever reaches Florida Bay.
Recommendation Based on the foregoing Findings of Fact and Conclusions of Law, it is RECOMMENDED that the Department enter a final order issuing the requested permit for the injection wells with all conditions contained in the notice and intent to issue. DONE AND ORDERED this 30th day of June, 1993, in Tallahassee, Leon County, Florida. CLAUDE B. ARRINGTON Hearing Officer Division of Administrative Hearings The DeSoto Building 1230 Apalachee Parkway Tallahassee, Florida 32399-1550 (904) 488-9675 Filed with the Clerk of the Division of Administrative Hearings this 30th day of June, 1993.
The Issue Respondent Jacksonville Shipyards, Inc. (JSI) filed a permit application with the State of Florida, Department of Environmental Regulation, (DER), for permission to conduct maintenance dredging in a basin associated with its shipyard operation. This permit application was made in accordance with Chapter 403, Florida Statutes, and Chapter 17, Florida Administrative Code. In the face of DER's statement of intent to grant this permit, George H. Hodges, Jr., (Petitioner), has petitioned in protest. Therefore, the issues to be considered in this dispute concern the entitlement of JSI to the grant of an environmental permit for maintenance dredging of its shipyard basin.
Findings Of Fact DER is an agency of the State of Florida charged with the environmental protection of waters within Florida. Its authority includes regulatory powers announced in Chapter 403, Florida Statutes, and Chapter 17, Florida Administrative Code. Certain activities involving state waters require permission from DER before they be lawfully undertaken. Among those activities are dredge projects such as contemplated by JSI in its pending request to be allowed to maintenance dredge as much as 66,000 cubic yards of material per year from its shipyard basin located in Jacksonville, Duval County, Florida. This is an undertaking which is envisioned by Chapter 403, Florida Statutes, related to the permit responsibility of DER. It is specifically addressed by Rule 17-4.28, Florida Administrative Code, in which is found the statement of permit requirements for dredge and fill activities. JSI, the applicant, operates a facility known as Bellinger Shipyard, which is engaged in the repair and maintenance of commercial and naval vessels. This enterprise includes the drydocking of vessels upon which repairs are effected, through the use of several drydock chambers in shipyard basin. In the course of the maintenance, a technique known as "gritblasting" is employed. The purpose of this "gritblasting" is to clean the ships in anticipation of repainting. On occasion the "gritblasting" would remove all coats of paint down to the metal finish of the ship. The paints being removed contain antifouling and anticorrosive materials. Those materials have, among other properties, the ability to repel marine organisms, causing their mortality. The "gritblasting" process utilizes a material known as "black beauty." This is a waste product from firing power plant boilers and it contains iron, silica, aluminum, titanium, magnesium, lime, penta oxide (P2O5), sodium oxide, sulfur trioxide and potassium oxide. The "black beauty" is applied through the use of a pressurized system which forces the material onto the treated surface under pressure of 70 to 85 pounds per square inch. After the preparation is made, vessels under repair are repainted, and similar paint with antifouling and anticorrosive properties is reapplied. During the "gritblasting" process, dust is generated and a portion of that material finds its way into the water within the basin. Other particles being removed drop to the deck surface of the drydock. When paint is reapplied to the surface of a vessel undergoing repair, it is given the opportunity to dry and the vessel is then refloated and removed from the drydock. To do this, the drydock itself is submerged. When the vessel has exited the drydock facility, the drydock resurfaces and is allowed to dry out. The material which has been removed from the surface of the repaired vessel is then shoveled into containers and transported to an offsite sanitary landfill for disposal. This material removed includes the "gritblasting" compound and paint which has been stripped from the surface of the vessel. When the drydock is submerged following vessel servicing, the inference can be drawn that a certain amount of the materials on the drydock deck surface will be introduced into the water within the basic before the drydock is resurfaced. The arrangement for refloating the vessel is the reverse of the technique employed in lifting the vessel out of the water for maintenance. When the vessel is brought in for service, it is guided into a submerged drydock. Water is then pumped out of the hollow drydock walls and deck to raise the vessel out of the water, allowing access to the vessel, which is completely above the water surface, as is the drydock work deck. The basin in which the business activities of JSI take place is located on the western shore of the Intercoastal Waterway. The Waterway and basin are part of an estuarine system, as these water bodies are tidally influenced. The basin and the Intercoastal Waterway constitute Class III waters of Florida. The configuration of the basin is as found in JSI Exhibit 16, an aerial photograph of the site. Moving from east to west within the basin, it is approximately one thousand feet from the Intercoastal Waterway to the back of the basin in its western-most extremity. In the back area of the basin the north- south axis is 250 feet. The interface between the basin and the Intercoastal Waterway on the eastern reach north-south axis is approximately 625 feet. There are no obstructions to the confluence of the Intercoastal Waterway and the eastern side of the repair basin. The southern-most reach of the basin is approximately 350 feet in length running east to west. On the eastern side of the basin there is a pier area which is roughly 360 feet north-south by 60 feet east-west. As described before, the pier is not a solid structure extending to the bottom of the water. Thus, water can be exchanged between the basin and the Intercoastal Waterway beneath the pier. JSI had acquired the Bellinger Shipyard in 1974. At that time environmental permits had been issued allowing for the maintenance dredging of the basin. These permits were valid through 1975. In 1975, JSI obtained a dredge and fill permit from the Florida Board of Trustees of the Internal Improvement Trust Fund, as well as a dredge and fill permit from the United States Corps of Engineers. These permits were for a ten-year period. They allowed maintenance dredging in the amount of 66,000 cubic yards per annum and for the disposal of the dredged material in an EPA-approved offshore site. In 1980 DER confirmed the dredge and fill permit that had been obtained from the Florida Board of Trustees. This permit by DER required JSI to conduct monitoring of turbidity during dredging, but did not require employment of turbidity screens. In 1979 the Army Corps had required JSI to conduct bioassay analysis in furtherance of the federal dredge and fill permit. In the face of the results obtained in that bioassay analysis, the Army Corps continued the dredge and fill permit to JSI dating from August 14, 1980. A subsequent extension of the federal permit was given through August 14, 1986. Contemporaneous with the present permit application before DER, JSI has requested further permission from the Army Corps related to the ability to excavate as much as 66,000 cubic yards of material on an annual basis. JSI has not been cited by any regulatory agency related to water quality violations associated with its dredging activity. The present DER permit application is for renewal of the 1980 Permit No. 16-21380 and is being processed under the DER File No. 161071139. This application for permit renewal was submitted on July 16, 1985. The application requests permission to maintenance dredge for a period of ten years. If granted, it is the intention of the applicant to use a closed clam shell bucket to excavate the material in the basin. This choice is in furtherance of the suggestion of DER and is a departure from the applicant's initial intention to use an open bucket to excavate. JSI also intends to employ turbidity curtains during the dredge activities. The applicant intends to transport the dredged material to the aforementioned EPA disposal site which is at sea. In doing so, a hopper barge is propelled by a towing vessel. Both the barge and towing vessel are inspected and certified by the United States Coast Guard. The crews involved in the transport of the material are qualified and licensed. In the past, transport of the material has been done under fair weather and smooth sea conditions, and it is intended that the transportation be done in that same setting if the permit is granted. The barge would not be loaded fully, thereby minimizing spillage. This was the arrangement in the past. The United States Coast Guard will be apprised of the departure time of the voyage in transport of the material, certain activities within that transport and upon return. The hopper barge has a bottom dump which is closed during transport and is opened at the bottom in disposing the dredge material. After satisfying DER about its proposal, JSI was informed that DER intended to grant the dredge permit requested. When Petitioner, George H. Hodges, Jr., the owner of real property adjacent to the site of the project, learned of the stated intention to grant the maintenance dredging permit, he offered a timely petition in opposition to the proposed agency action. This property of Petitioner is in Jacksonville, Duval County, Florida. It is located north of the JSI property at issue. Petitioner's real property is connected to the Intercoastal Waterway. Petitioner has filed this action in opposition to the grant of the permit upon the expressed belief that the dredging activity will cause pollution at his property. In particular, it is JSI's intention at various times in the calendar year to do maintenance dredging in the entire basin. In addition to using a closed clam shell bucket, a system of turbidity barriers or curtains will be employed in segmented dredge areas. Those several locations within the basin which are cordoned off with the turbidity curtains are as depicted in JSI's Exhibit 9 admitted into evidence. The design maintenance depths for the dredging project are set forth in JSI's Exhibit 4 admitted into evidence. They vary from -17 to -37.5 feet, with the greatest depth being contemplated under drydock number 1 in the northwestern corner of the basin. Near the Intercoastal Waterways the depth sought is -17 feet, transitioning to -21.5 feet moving toward the back of the basin at the western extreme and outside of the area dredged beneath drydock number 1. The depths sought under drydock numbers 2 and 3 are -26.5 feet and -20 feet respectively. These desired elevations correspond to conditions at mean low water. The tidal range in the Intercoastal Waterway adjacent to the basin, which would promote an influence in the basin proper, is in the neighborhood of 4-foot intervals, with two tidal cycles a day. This would mean, as example, that at the high tide range, the shallowest design depths for dredging of -17 feet become -21 feet in the transition from mean low water to mean high water. Those 4-foot variations would pertain to the other design depths contemplated in the dredging as described in the preceding paragraph as well. The turbidity barriers contemplated for use will extend from the surface through the water column to depths near the bottom. See JSI Exhibits 4 and 9. It is desirable, according to Dr. Gregory Powell, witness for JSI, a reliable expert in describing the effectiveness and use of turbidity curtains, to have those curtains extend to an area just above the bottom. Dr. Powell's education includes a Masters Degree in coastal and oceanographic engineering and a Ph.D. Degree in engineering mechanics, with emphasis on coastal and oceanographic engineering. In consideration of his remarks, under the influence of high tide there could be as much as a 4 foot gap between the curtain and the bottom. Powell and other experts who offered testimony agreed that turbidity screens can have effectiveness in areas of low current velocity, assuming the proper installation, maintenance and extension to a location near the bottom of the water body. If mismanaged, turbidity screens are not effective in controlling turbidity. Moreover, they are less effective in areas where significant current velocities are experienced. This would include the circumstance in which a foot and a half or more per second of flow was being experienced, according to Dr. Powell, whose opinion is accepted on this point. He also indicated that the quiescent areas in the basin, toward the back of the basin or western dimension of the basin, would show a flow regime in a rate of one centimeter per second. This expression is credited. Although, as described by Dr. Powell, the currents in the Intercoastal Waterway are moving at a rate approximating nine feet per second on ebb time at the bridge located on the Intercoastal Waterway to the south of the project site, these current velocities are not expected in the area where the dredging is occurring. Dr. Powell is correct in this assessment. As he describes, and in acceptance of that testimony, eddies from the current from the Intercoastal Waterway at peak flood tide could come into the basin and temporarily show velocities of one foot per second; however, these velocities are within the acceptable range of performance of the turbidity barrier. Dr. Powell's conclusion that wind would have no significant effect on the current velocity, given the depth of this basin, is also accepted. The remaining flow regime in the basin is not found to be a detriment to the function of the turbidity barriers. The use of turbidity curtains in this project is not found to be a "placebo" to placate DER as suggested by Erik J. Olson, engineering expert who testified in behalf of the Petitioner The monitoring that is intended in the course of the dredging activities would call for examination of background turbidity levels at three sites in the Intercoastal Waterway prior to commencing of dredging and twice daily at each of these sites during dredging. Should a violation of state water quality standards for turbidity be detected, dredging will cease until the problem with turbidity can be rectified. To provide ongoing assurances of compliance with water quality standards, JSI will analyze the sediment in the basin for the parameters of cadmium, copper, aluminum, lead, mercury, oil and grease every two years. Dr. Powell, expert in engineering and recognized as an expert in the matter of transport of the resuspended sediment associated with the dredging, as well as David Bickner, the project review specialist for DER, believe that the use of the closed clam shell bucket technique and employment of siltation screens or barriers, together with turbidity monitoring, will effectively protect against turbidity violations in the Intercoastal Waterway adjacent to the basin. This opinion is accepted. Bickner brings to his employment a Bachelor of Science degree in biology and a Master of Science degree in ecology. Bickner identified the principal concern of DER related to this project as the possibility of release of resuspended sediments into the Intercoastal Waterway. With the advent of the techniques described in the previous paragraph, only minimal changes in background conditions related to turbidity are expected. Although there would be turbidity violations within the confines of the areas where the dredging occurs, the principal influence of that turbidity will be confined in those regions. This speaks to dredge areas I, 2 and 3. According to Bickner, whose opinion is accepted, the turbidity changes within the dredge areas in relationship to background conditions do not require a mixing zone permit, nor do they constitute a basis for denial of the permit. As alluded to before, and as described by Dr. Powell, the basic nature of the basin in question is one of quiescent conditions with low current velocity. He points out that the layout of the basin is such that it is a sediment trap allowing the deposit of silt, in particular in the deeper sections of the basin near the western side. The greatest influence by resuspension of sediment in the dredging activities can be expected in the back portions of the basin and it is in this area that the silt barrier can be expected to be most efficient, based upon Powell's remarks. Dr. Powell indicated that there is the expectation of increased efficiency in turbidity control when a closed clam shell bucket is used, as opposed to the open style of clam shell bucket. Those efficiencies range from 30 to 70 per cent. There is some risk of increased turbidity near the bottom of the water column in the use of a closed clam shell bucket, and for that reason the applicant should monitor the activities of the operator of the excavation machinery to guard against inordinate disturbance of the area being excavated. On balance, the closed clam shell bucket is a superior technique to the open style of clam shell bucket excavation when those alternatives are compared. As Dr. Powell explained, the segmentation of the dredge area allows the resuspended sediment to be confined in more discrete circumstances and to be controlled. The location of the silt barriers behind the pier structure guard against the effects of eddying. The silt barriers can be properly anchored and will not be unduly influenced by current velocity. Dr. Powell believes that the use of silt barriers, taking into account a low velocity of current in the basin, and the proper deployment of the siltation screen could bring about a reduction of the resuspended solids by 80 to 90 per cent on the outside of the barrier. To calculate the influence or the environmental significance of that remaining 10 to 20 per cent of resuspended solids at the Intercoastal Waterway, Dr. Powell testified that the suspended load behind the silt curtain resulting from the dredging is expected to average from 100 milligrams per liter to a peak amount of 500 milligrams per liter. He believes that, depending on which methods of calculation is used, the dilution factor in the Intercoastal Waterway ranges from 330:1 to 600:1. In using an environmentally conservative assessment, that is 80 per cent effectiveness of the silt curtain with a 330:1 ratio, Powell calculated that the release of resuspended materials into the Intercoastal Waterway would be approximately .3 to 1.5 milligrams per liter. This translates to less than 1 NTU against background conditions. This result would not exceed the 29 NTU limit against background that is described as the standard for turbidity control. Dr. Powell's opinion of turbidity results based upon the dredge activity is accepted. There is exchange of water between the basin and the Intercoastal Waterway and to accommodate this influence, the turbidity curtains would be placed in such a fashion that they would not compete with the ebb and flow of the tide. Dr. Powell's assessment of the circumstance in describing the effectiveness of turbidity barriers takes into account the tidal conditions and the inappropriateness of trying to have the silt curtains prohibit the flow conditions during these tidal changes. In order to promote maximum effectiveness of the turbidity barriers during the entire course of excavation of materials, the length of, the silt screen must be adjusted as desired elevations are approached. Erik J. Olson is an expert in civil engineering with an emphasis on hydraulics and the holder of a Masters Degree in coastal and oceanographic engineering. As alluded to before, he questions the validity of the use of siltation barriers as an effective protection against the implications of turbidity. He properly points out that the curtains will not extend to the region of the interface of the basin and the water column at all times. He describes the exchange of water between the basin and the Intercoastal Waterway, to include the unrestricted sediment transport beneath the turbidity curtain. He believes that wind can cause changes in current velocity as great as .2 foot per second, activities within the basin an additional .3 foot per second, and eddying .3 foot per second. All of these taken together do not exceed the range of effective response of the turbidity barriers. On balance, Olson's criticism of the benefit of turbidity curtains is unconvincing. Arlynn Quinton White, Jr., who holds a Bachelor of Science Degree, a Master of Science Degree in biology and a Ph.D. in matters related to marine biology, offered his testimony in support of Petitioner. He believes that as much as 2 to 3 per cent of the resuspended sediment related to the dredging activities would reach the Intercoastal Waterway under the best of conditions. It is difficult to translate that testimony into a measurement of changes in turbidity levels against ambient conditions in the Intercoastal Waterway. In any event, as already indicated, the changes in turbidity levels are not expected to exceed 29 NTU against background. It is evident that the turbidity curtains are necessary and their proper use must be assured to protect against problems associated with turbidity and the implications of the constituents of the resuspended particulate matter related to possible toxicity. Therefore, the close monitoring suggested in the statement of intent to grant the dredge permit is viable. Another matter associated with the implications of turbidity pertains to the fact that when the dredge material has been resuspended, as much as two days could pass before the basin returns to background conditions, given the high content of silt with its attached metals. This becomes significant given the uncertainty of the location of the dredge equipment during the course of excavation, i.e., inside the barrier or outside the barrier. Final choice about the placement of the dredge equipment will have to be made at the time of the excavation. Should the dredge equipment be inside of the cordoned area while excavation is occurring, it would be necessary to allow turbidity conditions to achieve background levels before opening up the barrier for the exit of the hopper barge which contains the excavated material. Otherwise, the estimates as to the influence of the dredging activities in the Intercoastal Waterway are unduly optimistic. Likewise, if the excavation platform is placed outside of the work site, that is to say, on the outside of the siltation curtain, extreme caution must be used to avoid spillage of the excavated material when being loaded onto the hopper barge. The occasions in which the excavation is being made from this side of the barrier should be minimized. These safeguards are important because any changes in sediment loading within the Intercoastal Waterway promote an influence in the area immediately adjacent to the basin and other sites within the Intercoastal Waterway as well. The subject of the use of a hydraulic dredge as an alternative to excavation by use of a closed clam shell bucket was examined in remarks by the witnesses appearing at hearing. Olson believes that there are hydraulic dredges which can achieve the design depth contemplated by the project and which equipment could fit inside the basin area. This is contrary to the opinion of witnesses for the applicant and DER who do not believe that the hydraulic dredging equipment which would be necessary to achieve the design depths would fit into the basin area. On balance, the record does not establish that such equipment with the appropriate capability and size does exist. More importantly, the proposed method of excavation is environmentally acceptable when examined in the context of the permit sought in this case. Finally, it was not essential for the applicant to make a detailed investigation of availability of hydraulic dredging equipment and it is not determined that failure to make this investigation warrants the denial of the requested permit. Although an hydraulic dredge is more desirable from the standpoint that it causes less turbidity through resuspension of sediments, it is not the only plausible method of excavation in this instance. Raymond D. Schulze testified in behalf of JSI. He holds a Bachelor of Science Degree and a Master of Science Degree in environmental engineering sciences. In particular, he established the fact that the amount of resuspended solids that would be introduced into the Intercoastal Waterway associated with the dredging activity would not result in the smothering of organisms or to clogging of gills of fish. In addition to the possible problems with turbidity, there is the additional issue of violation of water quality standards in the several parameters associated with concentrations of metals in the water column within the basin and in the sediments or related parameters such as dissolved oxygen and biological integrity. Having considered the testimony, the facts do not point to water quality violations for any parameters occurring in the Intercoastal Waterway as a result of the dredging. To arrive at this factual impression, the testimony of Dr. Pollman and Schulze is relied upon. Water quality sampling done by JSI in locations within the basin and in the Intercoastal Waterway, that by Dr. Pollman and Schulze, supports their impression of the acceptability of the dredge activities. This water quality data was admitted as JSI's Exhibit 18. Additionally, the field conditions existing at the time of testing, to include water temperature, weather conditions, tidal cycle, ph and dissolved oxygen were also made known. This water quality data and other information examined by these witnesses points to the fact that no increases in concentrations of metals are occurring within the Intercoastal Waterway as a result of the business activities of the applicant, nor are they to be expected while dredging operations are under way. Dr. Pollman correctly identifies the fact that there will not be significant degradation of water quality, above DER's minimum standards, related to the Intercoastal Waterway based upon the dredging activities within the basin, dealing with the water quality parameters of mercury, zinc, cadmium, chromium, lead, aluminum, iron and copper, substances which are within the basin. Dr. Pollman also examined sediment data collected by DER, and that data tended to confirm his assessment of the influences of the dredging activity related to these parameters. Dr. Pollman does not believe that metal concentrations contained in the sediment of the basin are leaching into the water column in quantities sufficient to cause violation of water quality standards. His opinion is accepted. Pollman had collected water quality samples in the two locations where the greatest siltation rate was expected and as a consequence the greatest concentration of metals would be expected. The water quality samples were taken at several depths to reach an opinion as to the matter of leaching of metals into the water column and the possibility of those metals dissolving in the water column. If leaching had been occurring, a concentration of metals expressed as a gradient would be expected. The greatest concentration in this instance would be near the sediment interface with the water column. No such gradation was detected and the idea of leaching was ruled out. Bickner's testimony established that testing for the exact amount of iron present at the dredge site was not required, given the nature of the iron source being introduced into the water within the basin. Bickner did not find that type of iron to be toxic. As stated before, Pollman agrees that no violation of state water quality standards as a result of the presence of iron associated with the maintenance dredging should be expected. There is some data which shows water quality violation for mercury in the basin and the Intercoastal Waterway. Subsequent water samples collected by Schulze in the westerly portion of the basis did not show detectable levels of mercury. Moreover, data taken by Pollman and Schulze and compared with the DER sediment data shows that the concentration levels of mercury are greater in the Intercoastal Waterway than in the basin, thereby suggesting that there is no concentration gradient for mercury which would lead to the belief that the basin contributes to the amount of mercury found in the Intercoastal Waterway, nor is the mercury believed to be leaching into the water column in the basin. The explanation of the differences in measurements of the amount of mercury in the basin, depending upon the point in time at which analysis was made, may be attributable to a natural phenomenon, given numerous sources of mercury within the environment. Whatever the explanation of these changes, Dr. Pollman does not believe that the release of mercury associated with the resuspended sediments that may find their way into the Intercoastal Waterway would show a violation of the state water quality standard for mercury in that water body and his opinion is credited. Data collected by Pollman and Schulze did not show water quality violations for aluminum and the DER test data described before indicated aluminum levels lower in the basin than in the Intercoastal Waterway. Some data collected by Technical Services, Inc., an environmental consulting firm in Jacksonville, Florida, which was reviewed by Pollman, Schulze, and Bickner showed a substantial violation of the water quality standard related to aluminum in sediment sampling that was done. The origin of that amount of aluminum found on that occasion was not clear. It is possible, as described by Bickner, Pollman and Schulze, that the level detected In the Technical Service report could have occurred based upon natural phenomena such as storm water runoff from uplands. Bickner also questioned the findings of Technical Service and felt like the determination might be influenced by some intervening circumstance which would promote the need for re-analyzing that parameter. Whatever the explanation of the findings in the Technical Service report, it does not point to any water quality violation of the standard related to aluminum based upon the dredging activities, given the limited amount of total suspended solids that would be introduced into the Intercoastal Waterway. Schulze, in his assessment of the implications of metal concentrations in the sediment transported to the Intercoastal Waterway, did not find them to cause concern about toxicity to marine life in the Intercoastal Waterway. This point of view is accepted. In trying to understand the implications of metal concentrations, Schulze believed that the biologically available fractions of those metals in the sediment is not very high, and when the dilution of the sediments which occurs in these circumstances is examined, no toxicity is expected. Moreover, as Dr. Pollman described related to the parameter aluminum, it is not a toxic material at the ph levels found in the basin, and the resuspension during dredging will not cause it to gain toxicity. This opinion of Dr. Pollman is supported by Bickner and Schulze. The opinion of Dr. White that the amount of aluminum, copper and zinc within the sediment found in the basin would eventuate in the violation of water quality standards for those parameters when introduced into the Intercoastal Waterway is rejected. The information available to Pollman, Schulze and Bickner which describes their opinion about water quality standards was sufficient to reach an opinion, the position of Petitioner's witness Sanford Young, holder of a Bachelor of Science Degree in civil engineering and a Master of Science Degree in zoology notwithstanding. As Bickner indicated in his testimony, it is essential that an applicant give reasonable assurances of compliance with all parameters listed in Chapter 17-3, Florida Administrative Code, dealing with water quality. However, this does not mean that testing must be done for each parameter set forth in that chapter. Reasonable assurance has been given that water quality parameters as identified in that chapter will not be violated. Bickner indicates the biological integrity standard is not one of concern in that given the nature of business operations within the basin, there is no expectation of a stable benthic community which might be disturbed by dredging. From the remarks of Schulze, there is no prospect of danger to benthic communities within the Intercoastal Waterway. These impressions by Bickner and Schulze are accepted. Under the facts of the case, the failure of the DER permit appraisers to discover benthic organisms in the sample grabbed at the site is not unexpected. There is also some question about whether that sample is representative of the circumstance at the site, given the limited sampling. On the topic of normalization of the DER data which was described in the course of the hearing and is identified by Dr. Pollman, the value of that information is seen as establishing the relative quantities of certain metals within the basin as compared with other sites throughout the Intercoastal Waterway. Twenty-one different locations were involved in this analysis. Concentration ratios using aluminum to normalize the data are as reflected in JSI's Exhibit 17 admitted into evidence. The significance of this information as it grossly describes whether the basin routinely contributes to increases in the amounts of these metals within the Intercoastal Waterway. Overall, basin activities are not shown to have promoted such an outcome. This normalization comparison does not address the issue of site specific water quality violations; however, no such violations are expected associated with the dredging activities within the basin as it relates to violations in the adjacent Intercoastal Waterway. Schulze had made sampling related to dissolved oxygen within the basin and the Intercoastal Waterway. As Schulze describes, the levels of dissolved oxygen seem to be at their lowest point just prior to the dawn hours. Sampling which he did was done at 5:00 a.m. in order to obtain the lowest dissolved oxygen readings. Three sites were sampled within the basin and an additional site was sampled in the Intercoastal Waterway. Readings were taken at varying depths at each site to gain an impression of the overall water column. The mean reading for the circumstance was in excess of the required range for state water quality, that is 4.0 per million. Having considered the evidence, no problems with dissolved oxygen are expected in that deficit contribution is in the range of .1 milligram per liter, per Pollman. In addition, Dr. Powell, through modeling, examined the implications of long-term dredging activities on the topic of dissolved oxygen. He employed field data gathered by Schulze in this assessment. This modeling established that decreases in dissolved oxygen levels would range from .1 to .15 milligrams per liter. Given the average of 4.5 parts per million oxygen in the basin at present, the incremental decreases in dissolved oxygen levels related to the dredging would not pose a problems with state water quality standards for dissolved oxygen other than short-term effects in the immediate vicinity of the dredge area, which is an acceptable deviation. As the Petitioner urges in its fact proposal, a 1983 report of Technical Services, Inc., JSI Exhibit 4, and a 1985 report of that firm, JSI Exhibit 7, were made available as part of the application. Officials within Technical Services, Inc. did not appear at the hearing and offer testimony related to the specific findings found in those reports. This information was used by the experts who did testify on behalf of the applicant, in particular Dr. Pollman, as data to question, his assumptions made about the implications of the project in terms of water quality concerns. Pollman also utilized DER data taken from a source known as Storette, and this pertains to the 21 sampling stations involved in the preparation of JSI Exhibit 17, the graphing document related to concentrations of various metals. Again, this was in furtherance of the basic underlying opinion which Pollman had about the project. The Storette data as such was not offered into evidence. Witnesses for the Petitioner, namely Olson and White, were aware of the two reports of Technical Services, Inc. and the use of the DER Storette data and offered their criticism of the project taking into account this information. Petitioner points out that there is no indication as to how far below the sediment/water interface the Technical Services, Inc., and DER sediment samples related to reports of the consultant and the Storette information of DER were extracted. Therefore, it only reflected one portion of the sediment at a depth of extraction. A more complete understanding of the sediment characteristics would have been shown through a core sample, especially in the area to be dredged, but that understanding was not essential. The suggestion by the Petitioner that it was inappropriate to normalize data for purposes of describing the relative concentrations of the metals parameters is not accepted. The preparation of JSI's Exhibit 17 does not point to abnormally high amounts of aluminum, such that the use of aluminum as a known commodity in carrying out the normalization would be contraindicated. As identified by the petitioner in its proposal, sediment sizes within the strata found in the basin depicts higher percentage of silt and clay-size sediments in the back end of the basin with lesser amounts of the silt- and clay-size sediments in the southern reach of the basin and at the intersection of the basin with the Intercoastal Waterway. The smaller the particles, such as silt and clay, will remain suspended for a longer period of time and have a tendency to promote bonding with heavy metal. Nonetheless, this information does not change the impression that the turbidity barriers will be effective. The 1983 Technical Services, Inc., information related to the settling of resuspended sediment and similar information imparted in the 1985 report by that organization tend to confirm that approximately two days should be necessary to allow the area of excavation to return to background conditions related to turbidity. This is in corroboration of remarks by Dr. Powell. These time projections are not found to be inadequate when taking into account other factors such as tidal changes, boat traffic, other activities within the basin, wind and weather events. As White described, the antifouling properties of the paint involved in the business activity of the applicant can be expected to adversely impact any larval forms of marine organisms when introduced into the basin. Nonetheless, this toxicity is not expected to pose a danger to marine organisms in the Intercoastal Waterway given the percentage of resuspended sediment that will escape capture by the sediment barriers and the dilution factor before introduction of those resuspended sediments into the Intercoastal Waterway. Petitioner questions the acceptability of evidence of the findings set forth by E G & G Bionomics, a firm which performed an examination to determine existing diversity of benthic macroinvertebrates. Those results are reported in Petitioner's Exhibit 13, a 1980 report. They were not accepted as evidence of the specific findings within that report in that they were not the subject of discussion by persons who authored that report. The use was limited to corroboration of the opinion by Dr. Pollman and Schulze as to water quality considerations and they were not Crucial to their opinions. Moreover, it was not necessary for the applicant to perform a more recent bioassay in order to give reasonable assurance to DER concerning water quality matters or to establish the implications of the influence of contaminants within the sediment found in the basin related to benthic macroinvertebrates. The biological integrity of the basin area was at risk prior to the proposal for maintenance dredging. The relevant inquiry is the influence of the dredging activities on the biological integrity in the Intercoastal Waterway and those activities do not place organisms within the Intercoastal Waterway in peril. Any synergistic aspects of metals which act as toxins, for example, the increase in the aggregate value of the toxicity of zinc and cadmium, compared to their individual implications as toxins, will not present problems with water quality in the Intercoastal Waterway. Petitioner takes issue with the proposed disposition of the dredge material at an ocean site. While an appropriate upland disposal site would be preferred, it is not mandated. The approved EPA disposal site within federal jurisdiction is acceptable. Petitioner in its fact proposals found at paragraphs 36-39 (incorporated by this reference) points out violations of water quality standards for cadmium, mercury, and aluminum, and other possible violations of the standard for mercury. This information does not cause a change of opinion about the acceptability of the project in terms of reasonable assurances. There is no indication that oils and greases will present a problem related to water quality standards. The project is not contrary to public interest in that: (a) the project will not adversely affect the public health, safety, welfare or the property of others; (b) the project will not adversely affect the conservation of fish and wildlife, including endangered or threatened species, or their habitat; (c) the project will not adversely affect navigation or the flow of water or cause harmful erosion of shoaling; (d) the project will not adversely affect the fishing or recreational values or marine productivity in the vicinity of the project; (e) the project will be of a temporary nature; (f) the project will not adversely affect significant historical and archaeological resources under the provisions of s. 267.061; (g) the project is in no other way contrary to the public interest. The purpose of this fact finding does not include the issue of whether there are ongoing violations of state water quality standards associated with the business activity of the applicant, that not being the subject of the hearing. In any event, the testimony of Dr. Pollman established that the operations of JSI are not causing water quality problems associated with the parameters of cadmium, copper, aluminum, mercury, lead, chromium, tin, zinc or iron related to the Intercoastal Waterway. The influences of the business activities associated with those parameters within the basin are not understood when the evidence presented is examined but are not found to be essential to the resolution of this dispute.
Recommendation Having considered the facts, and the conclusions of law, it is, RECOMMENDED: That DER issue a final order which grants the requested maintenance dredging permit in keeping with the safeguards described in the fact finding of this recommended order. DONE AND ORDERED this 16th day of October 1986 at Tallahassee, Florida. CHARLES C. ADAMS, 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 16th day of October 1986. APPENDIX TO RECOMMENDED ORDER IN CASE NO. 86-0365 Having examined the proposed facts submitted by the parties, those proposals have been found as fact with the exception of the following which are distinguished: Petitioner's facts Paragraph 1: Subordinate to fact finding. Paragraph 2: The first sentence in this paragraph is rejected because the fact is not found within the indicated exhibits, nor can that fact be fairly inferred. Paragraphs 9, 10, 11, 14, and 15: Except for the last sentence in that latter paragraph are subordinate to facts found. Paragraph 15: The last sentence: Contrary to facts found. Paragraph 18: The last sentence: Subordinate to fact finding. Paragraphs 21, 22, 23, 24, 25 and 26: Subordinate to fact finding. Paragraph 27: Contrary to facts found. Paragraphs 28, 29, 30 and 31: Subordinate to fact finding. Paragraph 32: Not necessary to dispute resolution. Paragraphs 33 and 34: Subordinate to fact finding. Paragraph 35: Contrary to facts found. Paragraphs 40, 41 and 42: Subordinate to fact finding. Paragraphs 44, 45: Not necessary to dispute resolution. Paragraph 47: The first two sentences are information that is not sufficiently credible to allow application to the issues of the present case. Paragraphs 48, 49, 50 and 51: Not necessary to dispute resolution. Paragraph 52: Reject as fact. Paragraph 54: Contrary to facts found. Paragraph 55: Not necessary to dispute resolution. JSI and DER facts Paragraph 2: Pertaining to sentence 8 and the last phrase within sentence 11; Not necessary to dispute resolution. Paragraph 3: As to the first sentence, fourth sentence and seventh sentence; Not necessary to fact resolution. Paragraphs 4, 5 and 6 to the colon in paragraph 6: Not necessary to dispute resolution. The remaining portions of paragraph 6 are subordinate to fact finding. Paragraph 10: as to the last two sentences; Not necessary to dispute resolution. Paragraph 13: As to the next to the last sentence; Not necessary to dispute resolution. Paragraph 14: As to the fourth sentence and the last sentence; Not necessary to dispute resolution. Paragraphs 16, 17, 18 and 20: Subordinate to fact finding. Paragraph 21: Sentence 3 is subordinate to fact finding sentence 4 is not necessary to dispute resolution; sentences 5 and 6 are subordinate to fact finding. Paragraph 22: Next to the last sentence; Not necessary to dispute resolution. Paragraphs 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 38 and 41: Subordinate to fact finding, except the comments in the last sentence of paragraph 41 related to the operations of JSI causing or contributing elevated concentrations of parameters within the basin which is not found as fact. Paragraphs 42, 43 and 44: Subordinate to fact finding. COPIES FURNISHED: Kenneth G. Oertel, Esquire Chris Bryant, Esquire OERTEL AND HOFFMAN, P.A. Post Office Box 6507 Tallahassee, Florida 32314-6507 Thomas M. Baumer, Esquire Deborah Barton, Esq. GALLAGHER, BAUMER, MIKALS, BRADFORD, CANNON AND WALTER, P.A. 252-5 Independent Square Jacksonville, Florida 32202 Bradford L. Thomas, Esquire Assistant General Counsel Department of Environmental Regulation 2600 Blair Stone Road Tallahassee, Florida 32301 Victoria Tschinkel, Secretary Department of Environmental Regulation Twin Towers Office Building 2600 Blair Stone Road Tallahassee, Florida 32301
Findings Of Fact On June 15, 1977, Respondent Department of Transportation (DOT) filed application with Respondent Department of Environmental Regulation (DER) for a permit to relocate 5,188 linear feet of an existing canal commonly referred to as Cypress Strand Canal in Manatee County, Florida. The application and accompanying drawings show that the scope of the project is not merely limited to relocation of the canal, but other dredge and fill activities in the surrounding area incident to the construction of a highway interchange over State Road 64 approximately four and one-half miles east of Bradenton, Florida. On March 15, 1978, DER issued a Notice of Intent to issue a permit for the application pursuant to Chapter 403, Florida Statutes, and Public Law 92-500. In its notice, the extent of the project was described as follows: PROJECT: To construct an interchange where I-75 will intersect SR-64 by: filling 5,188 linear feet of a channelized cypress stand by placing 27,100 cubic yards of fill in the existing ditch; excavation of 38,250 cubic yards of material to create a new ditch 4,455 feet long; placement of 195,176 cubic yards of fill in an existing borrow pit to construct a road causeway with 241 linear feet of 72 inch RCP and 288 linear feet of 54 inch RCP placed under the causeway to provide water exchange; placement of 161 linear feet of double 8 ft. by 7 ft. box culvert in the new ditch for the crossing of SR-64; placement of 292 linear feet of 8 ft. by 7 ft. box culvert in the new ditch for the crossing of I-75; placement of two 24 inch and one 42 inch pipe to drain runoff from the interchange into the new ditch. The notice also stated that the proposed permit would be subject to certain conditions, including the placement of silt screens downstream from any construction, completion of ditch (canal) relocation and box culvert construction prior to placing fill in the existing canal, sodding of side slopes of causeway fill, and submission of weekly monitoring reports of turbidity before and during construction at certain locations. The letter provided that if monitoring revealed apparent violations of state water quality standards for turbidity, construction activities must cease immediately and not resume until corrective measures have been taken and turbidity has returned to acceptable levels. The letter also required that state water quality standards prescribed in Chapter 17-3, Florida Administrative Code, must be met by the DOT. (Exhibits 21 -22) The general area surrounding the project site consists of partially wooded pasture land and some residential development in the southwest portion. A cypress "head" consisting of almost eight acres lies east of the existing Cypress Strand Canal on the south side of SR-64 in the area where the relocated canal is proposed. The proposed roadway also will go through part of this cypress area. The bald cypress trees there are quite old and most reach a diameter of eight to ten feet. It is considered to be one of the few cypress stands to be found in Manatee County. In order to avoid the construction of bridges for the proposed highway in this area, DOT plans to fill approximately five and one-half acres with consequent removal of most of the existing trees in the filled area. Although there is standing water in the cypress hammock area, only an insignificant amount of surface water flows from there to the canal due to the higher elevation of the canal. It was for this reason that the DER supervisor of the dredge and fill section determined that the cypress head was not contiguous to waters regulated by the department. This decision, which was adopted by the Director of the DER Division of Environmental Permitting, in effect, overruled a recommendation by a DER field representative who had conducted an appraisal of the application and determined that the cypress head acts as a preliminary filtering are before the waters empty into the cypress creek salt marsh which then flows into the Manatee River. Expert testimony establishes that the DER position is correct in this respect and that only an insignificant amount of water leaves the cypress pond area into the canal. (Testimony of Allen, McWilliams, Wanielista, Exhibits 6-13, 17, 18, supplemented by Exhibits 15-16, 20.) On the north side of SR 64, the proposed relocated canal and roadway would be constructed through a "borrow pit" which covers approximately 39 acres. It is proposed to fill approximately 12 acres of this area. The remainder will contain water which acts as a "kidney" to filtrate water flowing from the canal and this area will be more than sufficient to adequately perform such a function. (Testimony of Allen, Wanielista, Exhibits 17-18.) The proposed roadway and ramps at the interchange over SR 64 are designated to retard or slow down the surface water movement to minimize degradation of water quality. To this end, the amount of exposed earth fill will be limited to the extent possible, and after the fill is placed in position, various types of erosion control will be accomplished, such as sodding slopes and building earth berms along the top of the roadway. Hay bales will be placed at the "toe" of the slopes during construction to further retard water movement and the introduction of sediment into waterways. Silt barriers termed "Florida diapers" which consist of a floating barrier of vinyl material will be placed strategically to prevent movement of silt past the barrier. This type of screening has proved to be effective in the past in situations involving relatively still water. Although various nutrients, metals, and chemicals will accumulate on the roadway and slopes during operations, the foregoing methods of retarding flow will serve as filters to reduce degradation of water quality. Additionally, depressions will be made in median areas to permit percolation into the roadway fill material. The "infield" or areas inside the circular ramps, consisting of approximately 20 acres, will be vegetated by the planting of some 150 cypress trees. The 80-foot-wide median area will also be vegetated. The concrete box culverts for the crossing of the proposed roadway will replace some 550 feet of the existing canal and will cause a somewhat accelerated flow of water. Overall, however, in the opinion of Respondents' expert witness, runoff from the interchange area will not measurably increase pollution in the Cypress Strand Canal or the Manatee River. It is his view that much of the water will percolate into the interchange ground area and that any remaining flow will result in 90 percent removal of pollutants by the various proposed methods of erosion control. In fact, the expert is of the view that the project is "overdesigned" at the present time and that the interchange infield design plus the filtering action that will take place in the borrow pit is more than sufficient to insure minimum degradation of water quality. (Testimony of Allen, Wanielista, Exhibit 13, 23.) All contracts for DOT roadway construction involve a special clause termed "Erosion Control and Pollution Abatement" that requires the building contractor to perform the various erosion control measures connected with the project. At a preconstruction conference, the contractor is required to tell DOT the specific manner in which such measures will be accomplished. During the construction phase, representatives of DER monitor the progress and recommend any necessary changes to meet State water quality requirements. Similar monitoring is required after construction and during operation of the roadway for the life of the permit. Although no precise data on the extent of any water degradation can be obtained until after construction commences, past experiences of the DER with the standard DOT construction contracts have proved the measures taken thereunder effectively maintain water quality standards. On this basis, the DER determined that DOT had provided reasonable assurances that construction of the interchange would not result in exceeding State water quality standards. (Testimony of Allen, McWilliams.) Various objections against granting the requested permit have been expressed by members of the public and environmental groups. Although most of these witnesses acknowledge the need for the I-75 extension, they were of the opinion that the roadway should be relocated to the east away from the cypress wetlands area. Additionally, written communications received in evidence from the U.S. Department of Commerce, Florida Division of Forestry, Manatee Health Department, and the United States Department of Fish and Wildlife Service raised objections to the proposed project based upon the elimination of the Cypress Stand area and recommended either relocation of the interchange or preservation of the existing wetlands. (Testimony of Duisburg, Belmont, Miller, Flisik, Matey, Quy, Exhibits 4, 14-16, 19.) Other public witnesses representing the City Council of Palmetto, Florida, the Board of County Commissioners of Manatee County, Florida, Manatee County Chamber of Commerce, City Commission of Bradenton, Florida, and private interests recommended approval of the application. The testimony of these witnesses and various resolutions from governmental bodies primarily focused on the urgent need for construction of the I-75 interchange to promote the economic and general welfare of the area residents and promote safety on the highways. (Testimony of Gallon, Holland, Prather, Neal, Price, Reasoner, Coates, Wiseman, T. Harllee, Jr., T. Harllee, Pinardi, Harden, Exhibits 1-3, 5, 24.)
Recommendation That the Department of Environmental Regulation issue the requested permit to the Department of Transportation. DONE AND ENTERED this 19th day of July 1978 in Tallahassee, Florida. THOMAS C. OLDHAM Hearing Officer Division of Administrative Hearings 530 Carlton Building Tallahassee, Florida 32304 (904) 488-9675 Filed with the Clerk of the Division of Administrative Hearings this 19th day of July 1978. COPIES FURNISHED: Honorable Jay Landers, Jr. Secretary Department of Environmental Regulation 2600 Blairstone Road Tallahassee, Florida 32301 Alfred W. Clark, Esquire Assistant General Counsel Department of Environmental Regulation 2600 Blairstone Road Tallahassee, Florida 32301 James W. Anderson, Esquire Assistant General Counsel Department of Transportation Haydon Burns Building Tallahassee, Florida 32304 Judith Smith Kavanaugh, Esquire 543 Tenth Street, West Bradenton, Florida 33505
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
The Issue Whether proposed Water Use Permits Nos. 20012236.000 (the Potable Water Permit) and 20012239.000 (the Irrigation Permit) and proposed Environmental Resource Permit No. 43020198.001 (the ERP) should be issued by the Respondent, Southwest Florida Water Management District (the District).
Findings Of Fact The Parties The individual Petitioners, Farnsworth, Roop, and Varnum are all Florida citizens and residents of Sumter County. None of the individual Petitioners offered any evidence relating to direct impacts that the ERP would have on their property. With respect to the Potable Water and Irrigation Permits, anecdotal testimony was presented by Petitioners and Wing and Weir relating to well failures and sinkholes in the area. Two Petitioners, Roop and Varnum, live in close proximity to the property encompassed by the three permits. Petitioner Farnsworth’s property is approximately three and a half miles from the project boundary. Wing and Weir live approximately four and a half to five and 18 miles from the project site, respectively. SCAID is a Florida not-for-profit corporation that has approximately 130 members. Farnsworth, the president of SCAID, identified only Roop and Varnum as members who will be directly affected by the activities to be authorized by the permits. The District is the administrative agency charged with the responsibility to conserve, protect, manage, and control water resources within its boundaries. The Utility and the Authority are limited liability companies, of which the Villages Inc. is the managing partner. The Villages Inc. is a Florida corporation. The Utility, which will serve as a provider of potable water, is regulated by the Public Service Commission, while the Authority which will provide irrigation water, is not. The Villages Inc., Development The Villages Inc. is a phased, mixed use, retirement community, which is located at the intersecting borders of Lake, Marion, and Sumter Counties. Development has been on going since at least 1983, with a current planning horizon of the year 2019. Currently, there are 15,362 constructed dwelling units in the built-out portion of the Villages Inc. that are located in Lake County and the extreme northeast corner of Sumter County. The portion located in Marion County is 60 percent complete, with 750 homes completed and another 600 under construction. Approximately another 22,000 residences are planned for development in Sumter County by the year 2012, with an additional 10,200 by the year 2019. However, the Potable Water and Irrigation Permits are only for a six-year duration, and the ERP has a duration of only six years. None of the permits authorize development activities beyond that time frame. Generally speaking, the three permits at issue include an area owned by the Villages Inc. that lies in northeast Sumter County South of County Road 466 and North of County Road 466A. However, it is not projected that this entire area will be built-out during the terms of three proposed permits. Area Hydrology and Topography In the area of the Villages Inc., there is a layer of approximately five to ten feet of sand at the land surface, which is underlain by ten to 70 feet of a clayey sand. Both of these constitute the surficial aquifer and are extremely leaky, allowing water to percolate easily through to a lower layer. Except in the vicinity of Lake Miona, there is no water in the surficial aquifer except after rainfall events. The clayey sand layer is underlain by the Upper Floridan, a limestone unit. The top of this limestone layer ("the top of the rock") occurs at fluctuating depths of between 30 and 70 feet. At approximately 350 to 400 feet below the land surface, there begins a transition to a denser unit that serves as a confining layer between the Upper Floridan production zone and the Lower Floridan production zone. This confining layer, which was confirmed by drilling at three locations in the Villages Inc. is approximately 150 feet thick in the area of the Villages Inc. Another transition, this time to a less dense formation, begins at approximately 550 to 600 feet, which is considered the top of the Lower Floridan production zone. While testing conducted on the project site indicated almost no leakage between the Upper and Lower Floridan production zones, it is generally known by experts that there is some exchange of water between the two layers. Both the Upper and the Lower Floridan contain water that meets potable water standards and both are considered water production zones. The water quality of the two zones is not significantly different. The project area is prone to karst activity, that is, the formation of sinkholes. Sinkholes are formed as a result of the collapse of the overburden above subsurface cavities which have been formed through a very gradual dissolution of limestone, thus resulting in a "sink" at the land surface. Surface water bodies in the area include Lake Miona, Black Lake, Cherry Lake, and Dry Prairie, as well as several other small wetlands. The Potable Water and Irrigation Permits The potable water permit is for the withdrawal from the Upper Floridan Aquifer of 1.164 million gallons of water per day (MGD), on an annual average, for potable use in residences and both commercial and recreational establishments. It also limits the maximum withdrawal during peak months to 2.909 MGD. The Irrigation Permit is for the withdrawal from the Lower Floridan Aquifer of 2.850 MGD, on an annual average, for use in irrigation. The peak month usage rate permissible under the proposed permit would be 9.090 MGD. Water withdrawal under the Irrigation Permit will be used for the irrigation of residential lawns, common areas, commercial landscaping, and golf courses. Modeling of Drawdowns In assessing the impacts of proposed water withdrawals from an aquifer, District personnel considered effects on the aquifers and on-surface water features in the area. Computer- generated models of the predicted effects of the Potable Water and Irrigation Permits withdrawals provided one of the principal bases for this assessment. The primary geologist assigned to review the permit applications reviewed two of the models submitted by the Utility and the Authority (jointly the WUP Applicants) and ran one personal model of her own in order to predict the effects of the proposed withdrawals on the aquifers, as well as on any wetlands and other surface water bodies. In particular, the models predict both the vertical and horizontal extent to which the withdrawals may lower the level of water within the aquifers and in-surface waters under various conditions. One of the models submitted by the WUP Applicants predicted drawdowns during a 90-day period of no rainfall while the other predicted the impacts of the withdrawals over the life of the permits, considered cumulatively with the effects of withdrawals from the already-existing Villages' development in Sumter, Marion, and Lake Counties. The District’s geologist modeled the impacts of the withdrawals over the life of the permits and included the cumulative effects of all of the current Villages' withdrawals in Sumter County. All of these models included the combined effects of both the proposed Potable Water and the Irrigation Permits. Based upon these models, it is concluded that there will be no significant drawdowns as a result of the withdrawals authorized by the proposed water use permits. Specifically, the only predicted drawdown in the surficial aquifer (0.25 feet of drawdown) is in an area where there are no natural surface water features. Drawdown in the Upper Floridan is predicted at between 0.1 and 0.2 feet, while the drawdown in the Lower Floridan is predicted at a maximum of 1.5 feet. These minor drawdowns are not expected to cause any adverse impacts. Transmissivity is the rate at which water moves horizontally through the aquifer. In areas with high transmissivity, the results of water withdrawals from an aquifer will generally be low in magnitude, but broad in lateral extent. Water withdrawals from areas of low transmissivity will result in cones of depression that are more limited in lateral extent, but steeper vertically. The use of too high a transmissivity rate in a model, would overpredict the horizontal distance of the drawdowns caused by withdrawals, but would underpredict the vertical drawdown in the immediate vicinity of the withdrawal. Conversely, use of too low a transmissivity would over-predict the effects in the immediate vicinity of the withdrawal but underpredict the lateral extent of the drawdown. The WUP Applicants’ models used a transmissivity value for the Lower Floridan Aquifer of 100,000 feet squared per day ("ft.2/d'). The WUP Applicants’ consultant derived the transmissivity values from a regional model prepared by the University of Florida. The regional model uses a transmissivity value for the entire region of 200,000 ft.2/d for the Lower Floridan. While that transmissivity is appropriate for assessing large-scale impacts, on a more localized level, the transmissivity of the aquifer may be lower. Therefore, the WUP Applicants’ consultant met with District representatives and agreed to use a value half that used in the University of Florida model. A similar approach was used for the transmissivity value used in modeling effects in the Upper Floridan. Notably, specific transmissivity values recorded in four wells in the Villages Inc. area were not used because two of these wells were only cased to a depth of just over 250 feet, with an open hole below that to a depth of 590 feet. Thus, the transmissivity measured in these wells reflect conditions in the confining layer at the immediate location of the wells - not the transmissivity of the Lower Floridan production zone. Further, site-specific information on transmissivity, measured during pump tests at individual wells, does not correlate well to the transmissivity of the aquifer, even at short distances from the well. Transmissivities measured at individual wells are used to determine the depth at which the pump should be set in the well, not to determine the transmissivity of the aquifer. Thus, the use of transmissivities derived from the regional model, but adjusted to be conservative, is entirely appropriate. Moreover, using a transmissivity in her modeling of the project impacts of 27,000 ft.2/d for the Lower Floridan Aquifer, the district geologist’s model predicted no adverse impacts. Leakance is the measure of the resistance of movement vertically through confining units of the aquifer. The leakance value used by the District for the confining layer between the Upper and Lower Floridan was taken from the University of Florida model. Tests conducted on the site actually measured even lower leakance values. Thus, the evidence establishes that the leakance value used in the WUP Applicants’ and the District’s modeling for the Floridan confining layer was reasonable and appropriate. Competent, substantial evidence also establishes that the leakance value used for Lake Miona was reasonable. The WUP Applicants submitted to the District substantial data, gathered over several years, reflecting the balance of water flowing into Lake Miona and the lake’s levels in relation to the potentiometric surface. This documentation verified the leakance value used for Lake Miona in the modeling. Finally, the District modeling used appropriate boundary condition parameters. The District modeling used what is known as the "constant head" boundary and assumes the existence of water generated off-site at the boundaries. Such a boundary simulates the discharge of the aquifer at a certain level. The use of constant head boundaries is an accepted practice. The modeling conducted on behalf of the District and the Applicants provides a reasonable assurances that the Potable Water and Irrigation Permits will not cause adverse water quality or quantity changes to surface or groundwater resources, will not cause adverse environmental impacts to natural resources, and will not cause pollution of the aquifer. Furthermore, because the predicted drawdowns are so insignificant, reasonable assurances have been provided that the withdrawals will not adversely impact existing off-site land uses or existing legal withdrawals. The modeling also provides reasonable assurances that the withdrawals will not be harmful to the water resources of the District. Moreover, monitoring requirements included in the proposed Potable Water and Irrigation Permits provide additional reasonable assurance that – should the withdrawal effects exceed those predicted by the modeling – such effects are identified and necessary steps are taken to mitigate for any potential impacts. The District has reserved the right to modify or revoke all or portions of the water use permits under certain circumstances. Specifically, the proposed Potable Water Permit requires a monitoring plan that includes the following pertinent provisions: There shall be no less than three control wetland and ten onsite wetland monitoring sites; A baseline monitoring report, outlining the current wetland conditions; * * * A statement indicating that an analysis of the water level records for area lakes, including Miona Lake, Black Lake, Cherry Lake, Lake Deaton and Lake Griffin, will be included in the annual report; A statement indicating that an analysis of the spring flow records for Gum Spring, Silver Spring, and Fenney Spring, will be included in the annual report; * * * Wildlife analyses for potentially impacted wetlands, lakes, and adjacent property owner uses or wells, including methods to determine success of the mitigation; A mitigation plan for potentially impacted wetlands, lakes, and adjacent property owner uses or wells, including methods and thresholds to determine success of the mitigation; An annual report of an analysis of the monitoring data . . . . Similar provisions are included in the proposed irrigation permit. The WUP Applicants, in conjunction with the District, have developed sites and methodologies for this monitoring. Reasonable Demand The water to be withdrawn under the proposed Potable Water Permit will serve 10,783 people. This total results from the simple multiplication of the number of residences to be built during the next six years (5,675) by the average number of residents per household (1.9). Those numbers are based upon historical absorption rates within the Villages Inc. development since 1983, an absorption rate that doubles approximately every five years. The Utility proposed a per capita use rate of 108 gallons per day for potable use only. District personnel independently verified that per capita rate, based upon current usage in the existing portions of the Villages Inc. and determined that the rate was reasonable. Based upon the population projections and the per capita rate, the District determined that there is a reasonable demand for the withdrawal of the amount of water, for potable purposes, that is reflected in the Potable Water Permit. The Utility has provided reasonable assurance regarding the Utility’s satisfaction of this permitting criterion. As to the irrigation permit, the Villages Inc. plans, within the next six years, to complete the construction of 1,911 acres of property that will require irrigation. The amount of water originally requested by the Authority for irrigation withdrawals was reduced during the course of the application process at the request of the District. The District determined the reasonable amount of irrigation water needed through the application of AGMOD, a computer model that predicts the irrigation needs of various vegetative covers. Since the Authority intends to utilize treated wastewater effluent as another source of irrigation water, the District reduced the amount of water that it would permit to be withdrawn from the Lower Floridan for irrigation. The District, thus, determined that the Authority would need 1.59 MGD annual average for recreational and aesthetic area irrigation and 1.26 MGD annual average for residential lawn irrigation, for a total of 2.85 MGD. The Villages Inc. also plans to accumulate stormwater in lined ponds for irrigation use. However, unlike its treatment of wastewater effluent, the District did not deduct accumulated stormwater from the amount of water deemed necessary for irrigation. This approach was adopted due to the inability to predict short-term rainfall amounts. The uncontroverted evidence of record establishes reasonable assurances that there is a reasonable demand for the amount of water to be withdrawn under the proposed irrigation permit. Conservation and Reuse Measures Both the Utility and the Authority applications included proposed measures for the conservation and reuse of water. The conservation plan submitted in conjunction with the irrigation permit application provides for control valves to regulate both the pressure and timing of irrigation by residential users; contractual restrictions on water use by commercial users; xeriscaping; and an irrigation control system for golf course irrigation that is designed to maximize the efficient use of water. In addition, in the proposed permits, the District requires the Utility and the Authority to expand upon these conservation measures through such measures as educational efforts, inclined block rate structures, and annual reporting to assess the success of conservation measures. The Authority also committed to reduce its dependence on groundwater withdrawals through the reuse of wastewater effluent, both from the on-site wastewater treatment facility and through contract with the City of Wildwood. Reasonable assurances have been provided that conservation measures have been incorporated and that, to the maximum extent practicable, reuse measures have been incorporated. Use of Lowest Available Quality of Water In addition to the reuse of treated wastewater effluent, the Authority intends to minimize its dependence on groundwater withdrawals for irrigation use through the reuse of stormwater accumulated in lined ponds. Thirty-one of the lined stormwater retention ponds to be constructed by the Villages Inc. are designed as a component of the irrigation system on-site. Ponds will be grouped with the individual ponds within each group linked through underground piping. There will be an electronically controlled valve in the stormwater pond at the end of the pipe that will be used to draw out water for irrigation purposes. These lined stormwater ponds serve several purposes. However, the design feature that is pertinent to the reuse of stormwater for irrigation is the inclusion of additional storage capacity below the top of the pond liner. No groundwater will be withdrawn for irrigation purposes unless the level of stormwater in these lined ponds drops below a designed minimum irrigation level. Groundwater pumped into these ponds will then be pumped out for irrigation. Thus, the use of groundwater for irrigation is minimized. The Authority has met its burden of proving that it will use the lowest quality of water available. With respect to the potable permit, the evidence establishes that there are only minor differences between the water quality in the Upper Floridan and Lower Floridan in this area. The Upper Floridan is a reasonable source for potable supply in this area. Thus, reasonable assurances have been provided by the Utility that it will utilize the lowest water quality that it has the ability to use for potable purposes. Waste of Water In regard to concerns that the design of the Villages Inc.'s stormwater/irrigation system will result in wasteful losses of water due to evaporation from the surface of the lined ponds, it must be noted that there are no artesian wells relating to this project and nothing in the record to suggest that the groundwater withdrawals by either the Utility or the Authority will cause excess water to run into the surface water system. Additionally, the evidence establishes that, to the extent groundwater will be withdrawn from the Lower Floridan and pumped into lined stormwater ponds, such augmentation is not for an aesthetic purpose. Instead, the groundwater added to those ponds will be utilized as an integral part of the irrigation system and will be limited in quantity to the amount necessary for immediate irrigation needs. Finally, the water to be withdrawn will be put to beneficial potable and irrigation uses, rather than wasteful purposes. Under current regulation, water lost from lined stormwater ponds through evaporation is not considered as waste. Thus, the Authority and the Utility have provided reasonable assurances that their withdrawals of groundwater will not result in waste. The ERP The stormwater management system proposed by the Villages Inc. will eventually serve 5,016 acres on which residential, commercial, golf course, and other recreational development will ultimately be constructed. However, the proposed permit currently at issue is preliminary in nature and will only authorize the construction of stormwater ponds, earthworks relating to the construction of compensating flood storage, and wetland mitigation. Water Quality Impacts The stormwater management system will include eight shallow treatment ponds that will be adjacent to Lake Miona and Black Lake and 45 lined retention ponds. Thirty-one of these lined ponds will serve as part of the irrigation system for a portion of the Villages Inc.'s development. All of these ponds provide water quality treatment. The unlined ponds will retain the first one inch of stormwater and then overflow into the lakes. The ponds provide water quality treatment of such water before it is discharged into the lakes. The water quality treatment provided by these ponds provides reasonable assurances that the project will not adversely impact the water quality of receiving waters. While they do not discharge directly to surface receiving waters, the lined retention ponds do provide protection against adverse water quality impacts on groundwater. There will be some percolation from these ponds, from the sides at heights above the top of the liner. However, the liners will prevent the discharge of pollutants through the highly permeable surface strata into the groundwater. The Villages Inc. designed the system in this manner in response to concerns voiced by the Department of Environmental Protection during the DRI process regarding potential pollutant loading of the aquifer at the retention pond sites. Furthermore, by distributing the accumulated stormwater - through the irrigation system - over a wider expanse of vegetated land surface, a greater degree of water quality treatment will be achieved than if the stormwater were simply permitted to percolate directly through the pond bottom. There is no reasonable expectation that pollutants will be discharged into the aquifer from the lined ponds. If dry ponds were used, there would be an accumulation of pollutants in the pond bottom. These measures provide reasonable assurances that there will be no adverse impact on the quality of receiving waters. Water Quantity Impacts With regard to the use of lined retention ponds, as part of the Villages Inc.’s stormwater system and the impact of such ponds on water quantity, the evaporative losses from lined ponds as opposed to unlined ponds is a differential of approximately one (1) inch of net recharge. The acreage of the lined ponds - even measured at the very top of the pond banks - is only 445 acres. That differential, in terms of a gross water balance, is not significant, in view of the other benefits provided by the lined ponds. As part of the project, wetlands will be created and expanded and other water bodies will be created. After rainfalls, these unlined ponds will be filled with water and will lose as much water through evaporation as would any other water body. The design proposed by the Villages Inc., however, will distribute the accumulated stormwater across the project site through the irrigation of vegetated areas. The documentation submitted by the Villages Inc. establishes that the ERP will not cause adverse water quantity impacts. The Villages Inc. has carried its burden as to this permitting criterion. Flooding, Surface Water Conveyance, and Storage Impacts Parts of the project are located in areas designated by the Federal Emergency Management Administration (FEMA) as 100-year flood zones. Specifically, these areas are located along Lake Miona, Black Lake, between Black Lake and Cherry Lake, and at some locations south of Black Lake. Under the District’s rules, compensation must be provided for any loss of flood zone in filled areas by the excavation of other areas. The District has determined, based upon the documentation provided with the Villages Inc.’s application, work on the site will encroach on 871.37 acre feet of the FEMA 100-year flood zone. However, 1,051.70 acre feet of compensating flood zone is being created. The Villages Inc. proposes to mitigate for the loss of flood zone primarily in the areas of Dry Prairie and Cherry Lake. At present, Cherry Lake is the location of a peat mining operation authorized by DEP permit. Mining has occurred at that site since the early 1980s. The flood zone mitigation proposed by the Villages Inc. provides reasonable assurance that it will sufficiently compensate for any loss of flood basin storage. The Villages Inc.'s project provides reasonable assurance that it will neither adversely affect surface water storage or conveyance capabilities, surface or groundwater levels or surface water flows nor cause adverse flooding. Each of the 45 retention ponds to be constructed on-site will include sufficient capacity, above the top of the pond liner, to hold a 100-year/24-hour storm event. This includes stormwater drainage from off-site. In addition, these ponds are designed to have an extra one foot of freeboard above that needed for the 100-year/24-hour storm, thus providing approximately an additional 100 acres of flood storage beyond that which will be lost through construction on-site. Furthermore, the Villages Inc. has proposed an emergency flood plan. In the event of a severe flood event, excess water will be pumped from Dry Prairie, Cherry Lake, and Lake Miona and delivered to the retention ponds and to certain golf course fairways located such that habitable living spaces would not be endangered. Environmental Impacts and Mitigation There are 601 acres of wetlands and surface waters of various kinds in the Villages Inc.’s project area. Forty-one acres of wetlands will be impacted by the work that is authorized under the ERP. Each of these impacted wetlands, along with the extent of the impact, is listed in the ERP. The impacts include both fill and excavation and all will be permanent. When assessing wetland impacts and proposed mitigation for those impacts, the District seeks to ensure that the activities proposed will not result in a net loss of wetland functionality. The object is to ensure that the end result will function at least as well as did the wetlands in their pre-impact condition. Functional value is judged, at least in part, by the long term viability of the wetland. While small, isolated wetlands are not completely without value, large wetland ecosystems – which are less susceptible to surrounding development – generally have greater long-term habitat value. The District’s policy is that an applicant need not provide any mitigation for the loss of habitat in wetlands of less than 0.5 acre, except under certain limited circumstances, including where the wetland is utilized by threatened or endangered species. Some wetlands that will be impacted by the Villages Inc.’s project are of high functional value and some are not as good. The Villages Inc. proposes a variety of types of mitigation for the wetlands impacts that will result from its project, all of which are summarized in the ERP. In all, 331.55 acres of mitigation are proposed by the Villages Inc. First, the District proposes to create new wetlands. Approximately 11 acres of this new wetland will consist of a marsh, which is to be created east of Cherry Lake. Second, it proposes to undertake substantial enhancement of Dry Prairie, a 126-acre wetland. Currently – and since at least the early nineties – Dry Prairie received discharge water from the peat mining operation at Cherry Lake. Without intervention, when the mining operations stop, Dry Prairie would naturally become drier than it has been for several years and would lose some of the habitat function that it has been providing. The Villages Inc.’s proposed enhancement is designed to match the current hydroperiods of Dry Prairie, thus ensuring its continued habitat value. Third, the Villages Inc. has proposed to enhance upland buffers around wetlands and surface waters by planting natural vegetation, thus providing a natural barrier. Placement of these buffers in conservation easements does not provide the Villages Inc. with mitigation credit, since a 25-foot buffer is required anyway. However, the District determined that the enhancement of these areas provided functional value to the wetlands and surface waters that would not be served by the easements alone. Fourth, the Villages Inc. will place a conservation easement over certain areas, including a 1500-foot radius preserve required by the Fish and Wildlife Conservation Commission (FWCC) around an identified eagles’ nest. These areas will also be used for the relocation of gopher tortoises and, if any are subsequently located, of gopher frogs. While the Villages Inc. is also performing some enhancement of this area, it will receive no mitigation credit for such enhancement – which was required to meet FWCC requirements. However, since the conservation easement will remain in effect in perpetuity, regardless of whether the eagles continue to use the nest, the easement ensures the continued, viability of the area’s wetlands and provides threatened and endangered species habitat. In order to provide additional assurances that these mitigation efforts will be successful, the District has included a condition in the proposed permit establishing wetland mitigation success criteria for the various types of proposed mitigation. If these success criteria are not achieved, additional mitigation must be provided. With the above described mitigation, the activities authorized under the ERP will not adversely impact the functional value of wetlands and other surface waters to fish or wildlife. The Villages Inc. has met its burden of providing reasonable assurances relating to this permit criterion. Capability of Performing Effectively The Villages Inc. has also provided reasonable assurances that the stormwater management system proposed is capable of functioning as designed. The retention ponds proposed are generally of a standard-type design and will not require complicated maintenance procedures. In its assessment of the functional capability of the system, the District did not concern itself with the amount of stormwater that the system might contribute for irrigation purposes. Rather, it focused its consideration on the stormwater management functions of the system. The question of the effectiveness of the system for irrigation purposes is not relevant to the determination of whether the Villages Inc. has met the criteria for permit issuance. Consequently, the record establishes that the documentation provided by the Villages Inc. contains reasonable assurances that the stormwater system will function effectively and as proposed. Operation Entity The Villages Inc. has created Community Development District No. 5 (CDD No. 5), which will serve as the entity responsible for the construction and maintenance of the stormwater system. CDD No. 5 will finance the construction through special revenue assessment bonds and will finance maintenance through the annual assessments. Similar community development districts were established to be responsible for earlier phases of the Villages Inc. The ERP includes a specific condition that, prior to any wetlands impacts, the Villages Inc. will either have to provide the District with documentation of the creation of a community development district or present the District with a performance bond in the amount of $1,698,696.00. Since the undisputed testimony at hearing was that CDD No. 5 has, in fact, now been created, there are reasonable assurances of financial responsibility. Secondary and Cumulative Impacts The Villages Inc.’s application also provides accurate and reliable information sufficient to establish that there are reasonable assurances that the proposed stormwater system will not cause unacceptable cumulative impacts upon wetlands or other surface waters or adverse secondary impacts to water resources. The system is designed in a manner that will meet water treatment criteria and there will be no secondary water quality impacts. Further, the use of buffers will prevent secondary impacts to wetlands and wetland habitats and there will be no secondary impacts to archeological or historical resources. In this instance, the stormwater system proposed by the Villages Inc. will function in a manner that replaces any water quantity or water quality functions lost by construction of the system. In its assessment of the possible cumulative impacts of the system, the District considered areas beyond the bounds of the current project, including the area to the south that is currently being reviewed under the DRI process as a substantial deviation. The District’s environmental scientist, Leonard Bartos, also reviewed that portion of the substantial deviation north of County Road 466A, in order to determine the types of wetlands present there. Furthermore, the District is one of the review agencies that comments on DRI and substantial deviation applications. When such an application is received by the District’s planning division, it is routed to the regulatory division for review. The District includes its knowledge of the DRIs in its determination that there are no cumulative impacts. Reasonable assurances have been provided as to these permitting criteria. Public Interest Balancing Test Because the proposed stormwater system will be located in, on, and over certain wetlands, the Villages Inc. must provide reasonable assurances that the system will not be contrary to the public interest. This assessment of this permitting criteria requires that the District balance seven factors. While the effects of the proposed activity will be permanent, the Villages Inc. has provided reasonable assurances that it will not have an adverse impact on the public health, safety, or welfare; on fishing or recreational values; on the flow of water; on environmental resources, including fish and wildlife and surface water resources; or on off-site properties. Furthermore, the District has carefully assessed the current functions being provided by the affected wetland areas. With respect to historical or archeological resources, the Villages Inc. has received letters from the Florida Department of State, Division of Historical Resources, stating that there are no significant historical or archeological resources on the project site that is the subject of this permit proceeding. Thus, the evidence establishes reasonable assurances that the Villages Inc.'s stormwater system will not be contrary to the public interest. Additionally, the District and Applicant presented uncontroverted evidence that the proposed project will not adversely impact a work of the District, and that there are no applicable special basin or geographic area criteria.
Recommendation Based on the foregoing findings of fact and conclusions of law, it is: RECOMMENDED that a final order be entered issuing Water Use Permit Nos. 20012236.000 and 20012239.000 and Environmental Resource Permit No. 43020198.001, in accordance with the District’s proposed agency action. DONE AND ENTERED this 24th day of June, 2002, in Tallahassee, Leon County, Florida. DON W. DAVIS Administrative Law Judge Division of Administrative Hearings The DeSoto Building 1230 Apalachee Parkway Tallahassee, Florida 32399-3060 (850) 488-9675 SUNCOM 278-9675 Fax Filing (850) 921-6847 www.doah.state.fl.us Filed with the Clerk of the Division of Administrative Hearings this 24th day of June, 2002.
Findings Of Fact By application No. 2-7738 filed on June 29, 1981, Aquarina has requested a withdrawal for consumptive use of ground water in Brevard County in the amount of 468,000 gallons per day (850,000 gallons per day maximum) of raw water (before processing). The purpose of the proposed consumptive water use is a proposed development of 196+- acres in Brevard County located between Mullet Creek, a tributary of the Indian River and the Atlantic Ocean in South Brevard County. It is located on the barrier islands separated from the mainland by the Indian River, and is 13 miles south of Melbourne and 5 miles north of Indian River County. Aquarina proposes to develop a condominium community with a projected population of 3,500 persons consisting of 1,600 residences, a commercial area, and 500 hotel rooms. An on-site well field is proposed as well as reverse osmosis water treatment and wastewater treatment plants which are to be constructed near the southern boundary of the development. Two wells with a capacity of approximately 500 gallons per minute are proposed to be constructed and both will withdraw water from the Floridian Aquifer for conversion by reverse osmosis treatment into potable water. 3/ In addition to potable water supply requirements for the development, although part of the requirement will be met by wastewater, there is a requirement for irrigation water for landscaping. The Aquarina site has been zoned Planned Unit Development (PUD) since 1973 and the proposed densities are in accordance with those established in the Brevard County Comprehensive Plan and Zoning Ordinance. As a result of an earlier application of Aquarina for consumptive use, a temporary water use permit was granted by the District to allow Aquarina to drill test wells for aquifer testing before the present application for water use would be considered by the District. This earlier application is not now at issue. Pursuant to this temporary permit, Aquarina conducted an aquifer test program. During the first test, well #1 (the northernmost well) was utilized as a monitor or observation well for the test conducted on well #2, and an existing mosquito control well was also used as an observation well. A two-step pump test was run for 24 hours, with drawdown readings recorded at all three wells. The pump test analysis showed that the Floridian Aquifer transmissivity (the measure of the ability of the aquifer to transmit water) ranged from 173,000 gallons per day per foot at the observation wells to 87,000 gallons per day per foot at the discharge well. The total depth of these two wells was #1 -- 425 feet and #2 -- 412 feet. Following submission of the results of the first aquifer test and the application for consumptive use filed on June 29, 1981, the District staff prepared a Technical Staff Report (TSR) for the benefit of the District Governing Board based upon the two wells drilled pursuant to the temporary permit. However, because the proposed withdrawals would be from the Sebastian Inlet fresh water lens which is a finite potable source of water rapidly being depleted by existing domestic uses and mosquito control wells, the TSR recommended, among other things, that the two wells be deepened to a depth below the Sebastian Inlet fresh water lens and cased to the depth of 450 feet to insure that withdrawals occur from expected saltier water below the lens. Also, the District staff recommended that three mosquito control wells on the Aquarina property be properly plugged to eliminate fresh water loss from the lens due to the following wells. The three flowing mosquito control wells on the site were estimated to have been flowing at 432,000 gallons per day. The Sebastian Inlet fresh water lens from which Aquarina initially intended to withdraw its water appears as two underground bubbles or lenses of water fresher than the surrounding connate or saltier water. The lenses apparently are a result of stratigraphic entrapment of fresh water due to geological formations and are not being recharged with fresh water. When withdrawals are made from these lenses, salty or connate-water fills the void left by the fresher water following withdrawal. The two lenses were substantially larger during recent times but, because of many domestic uses as well as mosquito control wells which have been flowing freely, the reservoirs have shrunk significantly. Based upon present usage, the north portion of the lens will last until approximately the year 2000 at current rates of consumption and the south portion of the lens will last until approximately the year 2030 at current rates of consumption. Because of the impact on the Sebastian Inlet lens, the staff of the District could not recommend approval of Aquarina's application unless Aquarina agreed to three main conditions: The Applicant would case its production wells to 450 feet below the surface, to avoid interference with the freshwater reservoir. (Because of the combined factors of upward artesian pressure in the aquifer, the greater density of salt or connate water in relation to fresh- water, and the known range of transmis- sivity and storage factors for that portion of the aquifer [an underground waterbearing stratum or group of strata] in that geographical area, connate water would flow upward and from the sides into the area of the Applicant's withdrawal of water from beneath the lens, and the lighter, fresh water of the lens above would remain there, free from interfer- ence by the withdrawal.) The Applicant would have to plug all the preexisting mosquito control wells on the development site. The Applicant would have to undergo early monitoring of the chemical quality of this water and the water within the fresh water reservoir. As a result of Aquarina's agreement to meet these three conditions, the Technical Staff Report (TSR) issued by the District on August 20, 1981, recommended approval of the application with the addition of the above conditions. During the course of (1) deepening of well #2 to a depth of 650 feet and backplugging to 595 feet; (2) casing it to a depth of 450 feet; (3) performing a second aquifer test on the deeper well; and (4) evaluating the proposed withdrawals, Aquarina's consultants came to the following conclusions which were unrebutted by other evidence submitted at the final hearing: During the process of deepening well #2 to 650 feet, later backplugged to 595 feet, the consultants discovered an aquitard or confining layer made up of small clay-sized particles which retard the vertical flow of water at a depth of 440 to 450 feet. This well was cased to a depth of 450 feet or to the top of the aquitard. Before reaching this layer, the quality of water was generally declining with increasing depths. Below this layer, the quality of water improved to a depth of approximately 550 feet and the transmissivity was greater below the aquitard than above. Further, that same aquitard was also discovered in a mosquito control well on site when it was logged. Sufficient quantities of treatable water are available from the deepened well to supply the needs of the Aquarina project. That in both the June, 1991, and the subsequent aquifer test, there appeared to be interferences from other sources which impact the potentiometric pressure levels of the wells on the Aquarina site. These were identified as the South Brevard Utilities Corporation (SBUC) and nearby domestic well users. That the results of the June, 1981, test and computer modeling were that the impact of the proposed Aquarina with- drawls on existing nearby wells drilled to the shallower level was between a one to two foot decline in the potentiometric pressure. The average potentiometric pressure in the local aquifer is 27 feet above National Vertical Geodetic Datum (NVGD) or Mean Sea Level (MSL). These existing nearby wells were identified to be the SBUC well approximately 2,400 feet away from Aquarina and those wells of nearby homeowners in the same vicinity as the SBUC well. That flownet analysis (EPA computer model) of the results of the second aquifer test program revealed that approximately 6% of the water obtained from the deepened well would come from the layers above the aquitard, i.e. connate water and the Sebastian Inlet fresh water lens. Based on this model, the effect on water quality for existing users of the proposed withdrawals was concluded to be insignificant and known existing users would not be harmed by the proposed withdrawals. The aquitard was observed in the Aquarina deepened well and the observation mosquito control well which was logged. It was impossible to state definitely that the observed aquitard in the area was a continuous geologic feature. Partly due to the proximity of the aquitard and the depth of the wells in relation to the Sebastian Inlet fresh water lens, the conclusion was reached that effect on water quality of the Aquarina withdrawals would be insignificant. There is no fresh water recharge into the Sebastian Inlet fresh water lens, but there is a continuous pressure con- nection throughout the Florida aquifer in the area. Any replacement of water discharged from the Sebastian Inlet fresh water lens or the lower zones will be of saltier, less potable connate water. It is not understood how long the part of the aquifer below the aquitard (lower zone) will continue to be a significant source of fresh water due to insufficient data. The three mosquito control wells on the Aquarina site are flowing when uncapped or unplugged an estimated 432,000 gallons per day while the wells in the northern sector of the Sebastian Inlet fresh water lens (below where Aquarina is located) flowed at an approximate rate of 2.6 MGD. These withdrawals by the mosquito control wells are primarily from the Sebastian Inlet fresh water lens and are the major cause of premature depletion of the lens. The testimony and the data presented at the hearing demonstrated that the Applicant has met its burden to show by a preponderance of the evidence that the proposed withdrawals by Aquarina will not significantly affect either the quality or quantity of water available to neighboring water users. This appears to be the case regardless of whether the aquitard testified to be about ten feet thick exists and whether the leakance value of less that 6% exists in the aquifer between the point of the Aquarina withdrawals and neighboring users. Data which may be generated subsequently may lead to a different conclusion, but this finding is based on the data presented to the Hearing Officer by the parties at the hearing. 4/ Aquarina has agreed to the following permit condition: (b) The applicant would have to plug all the preexisting mosquito control wells on the development site. The proper plugging of the mosquito control wells on the Aquarina site will save approximately 432.000 GPD of water from the finite Sebastian Inlet lens. This condition was agreed to independently of the contribution by Aquarina of $25,000 to the well plugging program with the District and Brevard County which has as its goal, the plugging of all mosquito control wells in the area. Without the plugging of the mosquito control wells, it is estimated that the northern reservoir of the lens would be depleted by the year 2000, and the southern reservoir by the year 2030. It was also estimated that the plugging of the mosquito control wells would prolong the life of the fresh water reservoirs by over 100 years. Furthermore, by plugging all the mosquito control wells, approximately 6,700,000 gallons per day will be saved from the entire lens area. The basin in which Aquarina is located is in an overdraft condition with more water withdrawn than is presently being recharged. However, the Aquarina project will bring about a net improvement in the situation due to the mosquito control well plugging program imposed as a condition of the permit. Under the sites current PUD zoning, a density of 12 dwelling units per acre is permitted. The current classification of the property in the Brevard County Comprehensive Plan is "urbanizing." Under that classification, the Applicant could seek a rezoning of the property from PUD to single family attached residential. Such a reclassification would avoid the requirements of Chapter 373, Florida Statutes, by allowing each of the 196+- dwelling units to have its own well with a per unit consumptive use below the quantity required to activate Chapter 373, Florida Statutes. Nothing would prevent any of the residential wells from tapping the fresh water lens presently used by the Petitioners in a total amount exceeding that sought in the instant application. Given the designated land use of the Aquarina site, the controlled withdrawal from one or two points within the development is a preferable alternative to the unregulated development and water use which in all probability would follow from the denial of this permit. In large measure, the District's options regarding this site and its attendant consequences have been predetermined by land use decisions made by local officials. Under these circumstances, the District has been required to choose among a set of options which do not include an option for controlled and limited growth directly tied to availability of fresh water resources envisioned by the Petitioner. The choice which the District made in this case, although obviously not ideal, is the best among the presently available alternatives.
Recommendation Based upon the foregoing Findings of Fact and Conclusions of Law, it is RECOMMENDED: That the Respondent St. Johns River Water Management District grant the requested consumptive water use permit to the Applicant Aquarina Developments, Inc., subject to the conditions contained in the staff's TSR, as corrected and amended on March 25, 1982, which include, but are not limited to: The maximum daily withdrawal shall not exceed 9.765 million gallons per day for five years. The maximum annual withdrawal shall not exceed 171 million gallons for five years. The existing ten inch public supply wells shall be lined or cased to a depth of 450 feet below land surface to insure with- drawals from below this depth. The construction standards used to perform these well modifications shall be accomplished through all appropriate permitting regulations and conform to existing construc- tion standards as stated in Chapter 373, Florida Statutes (F.S.) and Chapter 40C-3, Florida Administrative Code (F.A.C.). That any subsequent Public Supply well or wells constructed for this project be cased to an equal depth. That all mosquito control wells (3) within the property boundaries of the permittee be plugged with neat cement grout from bottom to top as specified in Chapter 40C-3, F.A.C. Chloride concentrations and dissolved solids in water samples from each water supply well shall be measured monthly, and results shall be submitted within 60 days of measure- ment to the St. Johns River Water Management District. A complete water quality analysis including Ca, Mg, Na, K, Cl, S04, HC03, pH and Co3 shall be performed on samples collected in May of each year. The permittee shall maintain withdrawal records showing daily withdrawals of raw (pre-treatment) water for each year ending May 31. These records shall be submitted on a quarterly basis on District Form En-3. Nothing in this permit shall be construed to limit the authority of the St. Johns River Water management District to declare a water shortage and issue orders pursuant to Section 373.175, Florida Statutes, or formulate a plan for implementation during periods of water shortage pursuant to Section 373.246, Florida Statutes. District representatives may visit the site to insure compliance with conditions of this permit following advance notifica- tion of the permittee of the time of visit. The water conserving techniques and methods as outlined in the July 30, 1981 letter to the District from Ed Fleis, P.E., to Thomas K. Ziegler, TSR Exhibit 10, shall be implemented and included throughout all phases of this project. Further, should the replace- ment of any fixtures or appliances be required during the life of this permit, water conserving fixtures equivalent to those originally specified shall be installed. DONE AND ORDERED this 6th day of August, 1982, in Tallahassee, Florida. SHARYN L. SMITH Hearing Officer Division of Administrative Hearings Oakland Building 2009 Apalachee Parkway Tallahassee, Florida 32301 (904) 488-9675 Filed with the Clerk of the Division of Administrative Hearings this 6th day of August, 1982.
The Issue The issue is whether an Environmental Resource Permit should be issued to Luther E. Blake, Jr. and Irene Blake Caudle authorizing the construction of a stormwater management system to serve a single-family development known as Walnut Creek, Phases I and II, in Gainesville, Florida.
Findings Of Fact Based upon all of the evidence, the following findings of fact are determined: Background In this environmental permitting dispute, Respondent, St. Johns River Water Management District (District), proposes to issue an Environmental Resource Permit to Respondents, Luther E. Blake, Jr. and Irene Blake Caudle (Applicants), authorizing the construction of a stormwater management system to serve Phases I and II of a single-family development known as Walnut Creek Subdivision in Gainesville, Florida. The system will be located on a 31-acre, L-shaped parcel of undeveloped, forested land. The proposed system includes a 135-lot single family subdivision, internal roadways with curb and gutter, a storm sewer system, and five dry retention ponds. The project site is located west of Northwest 13th Street (Highway 441) in the northwestern portion of the City of Gainesville between Northwest 39th Avenue (State Road 222) and Northwest 31st Boulevard, west of Palm Grove Subdivision, and east of Hidden Pines Subdivision. Petitioner, Glen Springs Preservation Association, Inc. (Association), is a corporation made up of an undisclosed number of persons, at least one of whom resides adjacent to or near the proposed project site. Petitioner, Elizabeth T. Furlow (Furlow), who did not indicate that she is a member, also resides with her husband near the project site. As set forth in the parties' Prehearing Stipulation, Petitioners contend that the proposed system fails to meet certain design and performance criteria, that the Applicants have failed to submit the appropriate documentation to satisfy the operation and maintenance entity requirements, and that the Applicants have failed to provide reasonable assurance that the system meets the general requirements for issuance of a permit. More specifically, they contend that the requirements of Rules 40C-42.023(1)(a)-(c), 40C-42.025(1), (3), (4), (5), (6), (7), (8), and (10), 40C-42.026(1)(a), (c), and (d), and 40C- 42.027, Florida Administrative Code, have not been met.2 On these technical issues, the parties have presented conflicting expert testimony, and the undersigned has accepted the more credible and persuasive testimony, as set forth in the findings below. Respondents have not stipulated to Petitioners' standing. Through the testimony of Furlow's husband, it was established that the Furlows live just south of the project site, approximately 100 yards north of Northwest 31st Boulevard near a creek known as Glen Springs Creek (Creek). The Furlows fear that if a permit is issued, runoff from the project site will cause further erosion of the Creek's banks and flooding during rainfall events. Although three persons who live adjacent to or near the project site appeared as witnesses, only one (Bonnie O'Brien) indicated that she is a member of the Association. Ms. O'Brien has lived just west of the Creek since 1969, around one-half mile from the project site. Over the years, and due to erosion caused by increasing development in the area, much of which began before the District began permitting stormwater systems, the Creek's banks have increased in depth from around a foot or so to as much as six feet. During large storm events, the Creek's waters rise up to as much as five feet in depth. Like the Furlows, Ms. O'Brien fears that runoff from the project will go into the Creek and adversely affect her property. There was, however, no evidence concerning the Association's interests, whether the Association is a Florida corporation, the number of members in the Association, and except for Ms. O'Brien, whether any of its members are substantially affected by the proposed activity.3 Design and performance criteria The Applicants propose to use a dry retention system consisting of five dry retention ponds ranging in depth from three to four and one-quarter feet which will be located mainly along the western boundaries of the project site. In general terms, stormwater runoff from the residential lots will sheet flow to roadways and alleys, will be collected by curbs and gutters, and then will be conveyed to the five ponds for water quality treatment. Rule 40C-42.025(1) requires that "[e]rosion and sediment control best management practices shall be used as necessary during construction to retain sediment on-site." The more persuasive evidence shows that the applicants have done so, and that the best management practices used by the Applicants are generally utilized throughout the development community. Therefore, the requirements of this rule have been met. Rule 40C-42.025(3) provides that unless applicable local regulations are more restrictive, "[n]ormally dry basins designed to impound more than two feet of water or permanently wet basins shall be fenced or otherwise restricted from public access." The proposed retention basins that have three-to-one (horizontal: vertical) side slopes will be fenced to prevent public access. The evidence also shows that there are no applicable, more restrictive local regulations. Under Rule 40C-42.025(4), "[a]ll stormwater basin side slopes shall be stabilized by either vegetation or other materials to minimize erosion and sedimentation of the basins." As to this requirement, the evidence establishes that all of the stormwater basin side slopes will be stabilized by vegetation to minimize erosion and sedimentation of the basins, as required by the rule. Further, the proposed retention basin side slopes are four-to-one and three-to-one. Slopes of this dimension are typically stable and will not easily erode. Rule 40C-42.025(5) requires that the systems be designed so that they "accommodate maintenance equipment access" and "facilitate regular operational maintenance." The evidence shows that the Applicants own the entire project site, and each of the five retention ponds can be accessed from roads and alleys within the project site. Rule 40C-42.025(6) requires that an applicant "obtain sufficient legal authorization as appropriate prior to permit issuance for stormwater management systems which propose to utilize offsite areas to satisfy the requirement in subsection 40C-42.023(1), F.A.C." Because the Applicants are not proposing to use any offsite areas for the system, and the system is located entirely on the project site, no "legal authorization" from other persons is required. Under Rule 40C-42.025(7), the system "shall provide gravity or pumped discharge that effectively operates under . . . [m]aximum stage in the receiving water resulting from the mean annual 24-hour storm." Calculations performed by the Applicants, and verified by the District's independent calculations, show that the system is designed to retain all of the runoff from the mean annual 24-hour storm event. Therefore, this rule has been satisfied. Rule 40C-42.025(8) provides that if a system serves a new construction area with greater than 50 percent impervious surface, an applicant is required to demonstrate that "post- development peak rate of discharge does not exceed the pre- development peak rate of discharge" for the mean annual 24-hour storm event. If the system serves a new construction area with less than 50 percent impervious surface, however, the requirements of this rule do not apply. The evidence shows that the proposed retention system will serve a new construction area (around 12 acres) with less than 50 percent impervious area. Therefore, the rule does not apply. Even so, the Applicants demonstrated that the post- development peak rate of discharge from the project site will not exceed the pre-development peak rate of discharge for the 24-hour storm event. In fact, the post-development peak rate of discharge from the project site during the 24-hour mean annual storm event will be zero. Finally, Rule 40C-42.025(10) requires in part that the construction plans and supporting calculations be "signed, sealed, and dated by an appropriate registered professional." The evidence shows that the final set of plans submitted in January 2002 by the Applicants was signed and sealed by H. Jerome Kelly, a professional engineer.4 Specific design and performance criteria Rule 40C-40.026(1)(a) requires that the retention system provide retention of stormwater runoff in one of four ways. Here, the Applicants have designed the system to provide "[o]n-line retention of an additional one half inch of runoff from the drainage area over the volume specified in subparagraph 1. above." Subparagraph 1. requires "[o]ff-line retention of the first one half of runoff or 1.25 inches of runoff from the impervious area, whichever is greater[.]" Because the system will provide on-line retention of a minimum of one inch of runoff from the project area, plus 1.25 inches of runoff from the impervious soil in the project/drainage area, it is found that the capacity of the proposed retention system is more than adequate to capture the quantity of stormwater runoff required by this rule. Under Rule 40C-42.026(1)(c), the system must be designed to "[p]rovide the capacity for the appropriate treatment volume of stormwater specified in paragraphs (a) and (c) above, within 72 hours following the storm event assuming average antecedent moisture conditions." To assure compliance with this rule, and to demonstrate that the system meets the required recovery of the water quality treatment volume, the District performed modeling to predict the vertical infiltration rate and the groundwater mounding effects of the proposed retention system. For the reasons stated below, it is found that the system will provide the required amount of treatment volume capacity within 72 hours of a storm event assuming average antecedent moisture conditions, as required by the rule. The District used one of the latest versions of the MODRET computer modeling program, a methodology routinely used by the District to support an application for this type of retention system. That program takes into account vertical percolation into the soil; once the water reaches the water table, the model then takes into account the lateral or horizontal movement of the water out of the pond. The model is used to determine whether the required water quality treatment volume, which is significantly less than the storage volume in the ponds, will draw down within three days. The modeling confirmed that this requirement will be satisfied. Data from the Applicants' on-site soil survey was used in the model to establish the depth below ground surface of the seasonal high water table level. This resulted in a conservative assumption of an above-normal average antecedent moisture condition beneath the retention ponds. The Applicants also collected soil samples from the project site, including those areas where the retention ponds will be located, and they performed laboratory tests in accordance with ASTM D2434 to calculate the vertical hydraulic conductivity and the horizontal hydraulic conductivity for those soils. The results of both tests fall within accepted ranges as stated in the published soils texts and governmental soils surveys for the project area. In addition, the Applicants conducted an independent test to determine the mean seasonal high water table on the project site. Based on visual observations of the soil samples, the Applicants determined that the mean seasonal high water table is between six and seven feet below ground surface. The visual observation of the soil samples is compatible with the results of Petitioners' soil augers obtained off the project site. As noted earlier, the proposed retention ponds will have a depth of three to four and one-quarter feet, which places the bottom of the ponds above the mean high water table as determined by the Applicants' calculations and as stated in the soils survey for Alachua County. Therefore, the dry retention ponds should not be considered impervious surfaces. Finally, Rule 40C-42.026(1)(d) requires that the retention system "[b]e stabilized with pervious material or permanent vegetation cover." The evidence shows that the proposed retention system will be stabilized with permanent vegetative cover. Other requirements and concerns Runoff from other developed properties in the vicinity of the proposed project site discharges into the Creek, contributing to erosion in the Creek. Not all of these existing developments have stormwater management systems on-site, since some of the older properties were built before the District assumed regulation over this activity. The proposed system can be effectively operated and maintained without causing or exacerbating the erosion problems that currently exist within the Creek system. This is because once the system is built, the amount of runoff leaving the site will be less than what is now present in the pre-development state. Thus, the project, as now designed, will not adversely affect drainage and flood protection on adjacent or nearby properties. Through the submission of a copy of the Articles of Incorporation and Declaration of Covenants for the Walnut Creek Homeowner's Association, the Applicants demonstrated that the District's requirements regarding the operation and maintenance of the proposed system after completion of construction will be met, as required by Rule 40C-42.027(4).
Recommendation Based on the foregoing Findings of Fact and Conclusions of Law, it is RECOMMENDED that the St. Johns River Water Management District enter a final order granting application number 42-001- 71000-1 of Luther E. Blake, Jr. and Irene Blake Caudle for an Environmental Resource Permit. DONE AND ENTERED this 14th day of February, 2002, in Tallahassee, Leon County, Florida. ___________________________________ DONALD R. ALEXANDER Administrative Law Judge Division of Administrative Hearings The DeSoto Building 1230 Apalachee Parkway Tallahassee, Florida 32399-3060 (850) 488-9675 SUNCOM 278-9675 Fax Filing (850) 921-6847 www.doah.state.fl.us Filed with the Clerk of the Division of Administrative Hearings this 14th day of February, 2002.
Findings Of Fact Parties Respondent Sun East is a corporation who seeks to create a Planned Unit Development, PUD 89-25, on its property located in Polk County, Florida. Petitioner Hirt owns and resides on property adjacent to the Planned Unit Development. The only geographical boundary between the proposed project and Petitioner's property is Watkins Road. Respondent SWFWMD is the water management district with permitting authority over the 5.36 acres involved in the permit application which is the subject of these proceedings. Jurisdictional Areas of Controversy Respondent Sun East began the application process for a surface water management general construction permit from SWFWMD for Phase I of its proposed development of PUD 89-25 on July 1, 1991. SWFWMD determined the application was complete on July 24, 1991. The permit which was issued the next day authorized Respondent Sun East to perform the work outlined in the permit and shown by the application, approved drawings, plans, and other documents on file with SWFWMD. Petitioner Hirt timely filed a formal administrative complaint in which he disputed the appropriateness of the permit issued. In support of his position, Petitioner identified a number of areas of controversy and alleged that the application and review process was insufficient. Petitioner's allegations in his complaint, which are properly before the Hearing Officer, are as follows: The approved surface water management system will cause surface water runoff from the project to flood Petitioner's property. One potential cause of such anticipated flooding is the lack of proper percolation design in the surface water management storage areas. Contrary to permit representations, the property and the retention pond required by SWFWMD are in the 100 year flood plain. The project is in an environmentally sensitive area. Respondent Sun East has neither complied with all local requirements nor obtained all necessary federal, state, local and special district authorizations prior to the start of any construction authorized by the permit. Site Information The parcel of land on which the project will be located lies partially within the geographical limits of the South Florida Water Management District (SFWMD). The remaining land lies within the boundaries of the Southwest Florida Water Management District. Originally, SFWMD gave Respondent Sun East a permit to construct Phase I of the project, along with conceptual approval for Phase II. The decision by Sun East to file the application for a surface water management general construction permit with SFWMD instead of SWFWMD was based upon advice from personnel at SWFWMD. When it was later determined that SWFWMD would need to review an application for Phase I in order for the project to be properly permitted, SWFWMD acted quickly to reduce any potential delay to the project which could be attributed to its prior incorrect jurisdictional analysis. The agency's efforts were unrelated to any political connections or family relationships the former landowner, Jack Watkins, may have with past or current members of the Florida Legislature or Congress. The grading plan for Phase I of the project coupled with the pre- development and post-development 25 year storm event analysis, assessed drainage concerns associated with Phase I of the PUD. Water flow analysis for the site that considered existing conditions and proposed improvements, demonstrates that the property west of Watkins Road is not part of the surface water management system for this project. The cross drain beneath Watkins Road to the south of the proposed project deals with a different, natural conveyance system to Lake Pierce which is utilized by property owners such as Petitioner Hirt on the east side of the roadway. The proposed surface water management system for Phase I will not affect the drainage conveyance system utilized by property owners on the east side of Watkins Road. The stormwater management collection and conveyance system for Phase I was designed to convey the stormwater runoff from a 25 year 24-hour rainfall event, as required. It was not overdesigned to deal with a more intense, longer rainfall or storm event. Essentially, stormwater treatment and attenuation will be provided by the two proposed detention ponds A & B, as depicted on the site plan. Runoff from the first inch of rainfall will be filtered through a proposed side berm filter system in Pond A. The Polk County Soil Survey and field observations were used to assist in the weir control structure design. The weir was designed to restrict the post-development 25 year discharge to the pre-developed 25 year runoff rate. The project does not rely on percolation to offset post-development changes in the surface water management system design. As a result, percolation rates are not a factor to be dealt with in a design review. Flood Plain The 100 year elevation of 79 feet above mean sea level delineates the 100 year flood plain on the property in Phase I. According to the contour map, the existing Ponds 1 and 2 have depression contours below the flood plain. The water level in Existing Pond 1 is 78.24 feet. The water level in Existing Pond 2 is 78.14 feet. These ponds are not a major or significant part of an existing, natural surface water storage system in the area. They are just minor surface depressions. None of the lots contained in Phase I encroach upon the 100 year flood plain level. Environmental Concerns The parties stipulated at hearing that SWFWMD rule criteria relating to wetland and natural resource impacts were met by Sun East's general surface water management permit application. Local Requirements Prior to making application to SWFWMD for a permit in this case, Respondent Sun East obtained approval for Phase I of PUD 89-25 from Polk County. Since that time, the zoning approval was quashed by the circuit court. Respondent Sun East was ordered to obtain the SWFWMD permit before reapplying for zoning approval. The limiting conditions which are part of the permit issued by SWFWMD state: The permittee shall comply with all applicable local subdivision regulations and other local requirements. In addition the permittee shall obtain all necessary Federal, State, local and special district authorizations prior to the start of any construction or alteration of works authorized by this permit. The permit limiting conditions do not require that all other permits be acquired prior to the application for this permit. Instead, the limiting conditions advise that all other necessary permits must be acquired prior to construction or alteration of works begun pursuant to this permit. Petitioner began construction authorized by the permit after SWFWMD issued its permit approval on July 25, 1991. The Petitions for Certiorari on the final approval for Phase I from Polk County was already filed when the application for a permit from SWFWMD was requested by Sun East. The completed application does not reflect that the Polk County zoning approval was being challenged, and SWFWMD was not made aware of the possibility that it could be overturned at a later date. The permit issued by SWFWMD was timely challenged by Petitioner, before the approval became final agency action. Sun East did not comply with the limiting condition in the permit that requires a permittee to obtain all necessary authorizations prior to construction as the zoning approval was still unsettled when construction began. Petitioner's challenge to the SWFWMD permit was filed in good faith as numerous disputes of fact existed regarding this permit prior to resolution in this Recommended Order. Based upon the information and documentation given to Petitioner when the permit was issued, it reasonably appeared that his substantial interests were affected by the proposed drainage plan associated with the development.
Recommendation Based upon the foregoing, it is RECOMMENDED: That SWFWMD issue the general construction permit for the surface water management system for Phase I, within the limits indicated in the intent to issue, subject to conditions contained therein. That SWFWMD initiate an inspection of the stormwater management system at its expense to ensure conformity with the approved plans and specifications. That appropriate action be taken under Chapter 373, Florida Statutes, to prevent the continued violation of the limiting condition in the permit relating to construction starts. RECOMMENDED this 24th day of March, 1992, in Tallahassee, Leon County, Florida. VERONICA E. DONNELLY Hearing Officer Division of Administrative Hearings The DeSoto Building 1230 Apalachee Parkway Tallahassee, Florida 32399-1550 (904)488-9675 Filed with the Clerk of the Division of Administrative Hearings this 24th day of March, 1992. APPENDIX TO RECOMMENDED ORDER, CASE NO. 91-5689 Joint Proposed Findings of Fact filed by Respondents are addressed as follows: Accepted. See HO #3. Accepted. See HO #3. Accepted. See HO #2. Accepted. See HO #4. Accepted. See HO #4. Accepted. Accepted. Accepted. See HO #20. Accepted. Accepted. Accepted. Accepted. See HO #19. Accepted. See HO #19. Rejected. Irrelevant. Rejected. Irrelevant. Rejected. Irrelevant. Rejected. Irrelevant. Accepted. See HO #25. Accepted. Accepted. Accepted. Rejected. Irrelevant Rejected. Contrary to fact. See HO #28. COPIES FURNISHED: ROBERT PERSANTE ESQ MERKLE & MAGRI 7650 W COURTNEY CAMPBELL CAUSEWAY - STE 1120 TAMPA FL 33607 ANDREW R REILLY ESQ REILLY & LASSEIGNE PO BOX 2039 HAINES CITY FL 33845 EDWARD B HELVENSTON ESQ DEPUTY GENERAL COUNSEL SOUTHWEST FL WATER MANAGEMENT DISTRICT 2379 BROAD ST BROOKSVILLE FL 34609 6899 PETER G HUBBELL/EXECUTIVE DIRECTOR SOUTHWEST FL WATER MANAGEMENT DISTRICT 2379 BROAD ST BROOKSVILLE FL 34609 6899 CAROL BROWNER/SECRETARY DEPT OF ENVIRONMENTAL REGULATION TWIN TOWERS OFFICE BLDG 2600 BLAIRSTONE RD TALLAHASSEE FL 32399 2400
