Findings Of Fact Petitioner purchased a five-acre tract of land in Section 11, Township 28 South, Range 17 East, in Hillsborough County, Florida, to use as a dump site for tree trimmings generated by its tree service business. After being advised by the Hillsborough County Environmental Protection Agency (HCEPA) that dumping on this property was illegal and a fire hazard, Petitioner applied for and obtained a permit to burn some of the trimmings that had been dumped on the property. The permit was issued to burn in the northern part of the property and burning logs were observed in the southern part of the property without an adequate firebreak. This permit was later rescinded. At the time Petitioner acquired the property it was enclosed with a barbed-wire fence with access only via an 18-foot-wide road. Brush fires in the vicinity of the property led the fire department to cut the fence so their equipment could be moved through the area when necessary. Frequent inspection by HCEPA led to citations to Petitioner for maintaining a fire hazard (no adequate fire-break around the perimeter of the property), for unauthorized dumping on the property, inadequate security, and for operating a landfill without a permit. An order to cease dumping on this site was issued by HCEPA. Petitioner sought the assistance of the fire department in constructing a firebreak around the property and on two occasions stretched a chain and later a cable across the road to bar access to unauthorized persons. Trespassers tore down the chain and cable and dumped household trash on the property. Petitioner engaged the services of an engineer to prepare its application to DER for a permit to operate a landfill. When advised that the application was incomplete, that a bond was needed, that the property was not zoned properly, and that the security was inadequate, Petitioner applied to Hillsborough County for a zoning change and contacted an insurance company about the required bond and was assured a bond would be issued when requested. Petitioner's application for a zoning change never reached the agenda of the Hillsborough County Commission and Petitioner never presented documentary evidence that the required bond would be issued upon request. Petitioner presented no evidence that anything has been done to improve the security of the property or to keep unauthorized persons out.
Findings Of Fact The Petitioner is comprised of residents of the residential neighborhood in close proximity to the construction and demolition debris disposal site or pit maintained by Whitrock Associates, Inc.. Its President is Jim Whitfield, a party Respondent to the subject Consent Order. The Petitioner complains that illegal dumping is occurring at the disposal site, that there is no guard maintained at the gate, and that the gate is not locked when no one is present. It complains that DEP does not inspect the facility enough by only inspecting it once per year and that the facility should be closed down. Its chief objections are that refuse is being dumped in what it considers to be a stocked fishing lake. The "lake" is a borrow pit partially filled with water, which resulted when excavation of the dirt in the pit penetrated below the ground water table. The chief objections raised by the Petitioner amount to the nuisance "eye-sore" nature of the facility and the concomitant deleterious effect its presence and activity has arguably had on property values and the Petitioner's members' ability to re-sell homes. The Petitioner's standing is not contested. The Respondent is an agency of the State of Florida charged with regulating landfills, construction and demolition debris disposal sites and other such waste sites, within the purview of Section 403.161, Florida Statutes, concerning pollution discharge and, more specifically, rules contained in Chapter 62-701, Florida Administrative Code, concerning solid waste and similar materials and disposal facilities. DEP is a party Respondent to this proceeding because the Consent Order it has entered into with the owner and operator of the site, Whitrock Associates, Inc., has been challenged, within the point of entry period afforded by that Consent Order, by the above-named Petitioner. Whitrock Associates, Inc. maintains a construction and demolition debris disposal site, in the form of an excavated pit, located between Carmel Drive and Vicky Leigh Road in Fort Walton Beach, Okaloosa County, Florida. An inspection of the facility by DEP personnel on October 13, 1994 revealed the disposal of organic debris in surface water at the site, the disposal of which is illegal in ground or surface waters. It also came to DEP's attention at this time that the facility was operating with an expired general permit. Consequently, an enforcement action was initiated against the owner and operator of the facility. After extensive negotiations, the subject Consent Order resulted, which has been challenged by the Petitioner. The essential provisions of the Consent Order would require that the Respondent to it, meaning Whitrock Associates, Inc., cease disposal of construction and demolition debris at the facility, which is not "clean debris". "Clean debris" is inert debris, such as brick, glass, ceramics, and uncontaminated concrete, including embedded pipe or steel. The Consent Order provides that within 60 days of its effective date, all such non-conforming construction and demolition debris shall be removed from the water at the site and that the Respondent, Whitrock Associates, Inc., shall submit a notification of intent to use a general permit for the construction and demolition debris disposal facility to DEP. Failure to proceed to obtain the general permit would result in closure of the facility, pursuant to Rule 62-701.803(10), Florida Administrative Code. The Consent Order also provides that a $2,300.00 civil penalty and cost payment shall be made to DEP in full settlement of the matters addressed in the Consent Order. That payment shall be made within 30 days of the effective date of the Consent Order. The Consent Order then enunciates, in great detail, the manner in which future penalties will be assessed for any violation of the Consent Order and related time limits, as well as payment methods and circumstances. It also provides a means for handling of delays in compliance with the Consent Order. It provides the means for enforcement of the terms of the Consent Order. Billy Ross Mitchell is an Environmental Specialist with 14 years of experience with DEP. He works in the solid waste section. Among his other duties, he inspects solid waste disposal facilities. He has a degree in environmental resource management. Mr. Mitchell established that this is the type of facility, where, because of the disposal of inert construction debris, which does not pose a significant pollution threat, a so-called "general permit" is sufficient authorization for operation of the facility. The facility was operating with an expired general permit at the time of Mr. Mitchell's inspection, but a new general permit has since been authorized. Mr. Mitchell performed the inspection of the facility, at which he observed illegal construction debris being placed in the water at the site. DEP's rules allow inert material, such as brick, glass, ceramics, and so forth to be placed in water at the site, which, in essence, is a borrow pit. The rules forbid organic materials, such as shingles, lumber and other similar materials, which can sometimes be constituted of pollutant substances, from being placed in the surface or ground water. As shown by the Respondent's Exhibit 3, a letter from Mr. Cooley, a District Director of DEP, to Mr. Lawrence Sidel of the Petitioner, uncontaminated dirt and "clean debris", such as chunks of concrete and the like, are not considered under Florida law to be solid waste. DEP takes the position that there is no prohibition against a person using clean fill, without a required permit, to fill land or bodies of water that are not "state jurisdictional water." The water body on the Whitrock property is not a state jurisdictional lake or water body. It is an old borrow pit, wholly contained on the Whitrock property. State law allows its owners to fill it with dirt or clean fill. Whitrock is not allowed to use any material classified as "solid waste" in filling the pit, hence the violation cited to that firm in the particular mentioned above, concerning the non-inert construction debris that was placed in the water. The Respondent's Exhibit 4 is an engineer's report prepared for the Whitrock facility involving the "notification of proposed use of a general permit" process for the operation of the construction and demolition debris disposal facility. This is the general permit notification process and general permit referenced in the Consent Order. 1/ The site has been used for many years as a borrow pit for dirt fill material or sand, as well as a disposal site for construction debris. In the general permit achievement process, the owner proposes to grade the site so that the final grade is the original, natural grade, with a slight two percent top slope to promote runoff to surrounding retention swales which will be installed at the site. The soil borings reflect that at all depths tested, sand is the underlying soil at the site. The borrow pit has been excavated below the natural water table, which has resulted in ponding of water on the floor of the borrow pit. This is proposed to be filled with "clean" debris, as it is received on site. Clean debris is solid waste which is virtually inert and which poses no pollution threat to ground or surface waters, is not a fire hazard, and is likely to retain its physical and chemical structure under expected conditions of disposal or use. Examples of it are as depicted in paragraphs six and seven, supra. Clean debris disposal is thus proposed within the pit bottom to an elevation of one foot above water table, above which construction and demolition debris will be disposed. The owner of the facility will be the person responsible for operation, maintenance, and closure of the proposed disposal facility. Procedures will be followed to control the types of waste received, the unloading, compaction, application of cover, final cover, and control of storm water at the site. The existing perimeter fence will remain with a lockable gate at the entrance to the site. In accordance with Rule 62-701.803(8), Florida Administrative Code, at least one spotter/operator will be on duty when the site is operating to inspect incoming waste. If prohibited waste is discovered, it will be separated from the waste stream and placed in appropriate containers for disposal at a properly-permitted facility. A commercial dumpster is located on site for unpermitted waste and is regularly emptied by a sanitation contractor. This practice is proposed to continue with the issuance of the general permit for the construction and demolition debris facility. Construction and demolition debris filling operations will proceed from the northwest corner of the site and progress in an easterly direction along the north property fence line. Due to the depth of the existing cut, approximately 25 feet, it will take approximately three separate "lifts" of waste and compacted material in order to reach a finished grade elevation, to match the original grade of the surrounding terrain. Additional soils required for intermediate cover material and final cover will be obtained off site from other sources. Filling operations should allow for approximately a 100-foot wide working face to aide in keeping a manageable disposal area. A dozer and front-end loader will be available on the site to compact waste material into the "working face." Each lift will be six to eight feet thick. Closure of each portion of the facility will occur as waste compaction approaches original grade. Final cover, seeding or planting of vegetated cover will be placed during stages, within 180 days after reaching final-design waste elevations. The final cover will consist of a 24-inch thick soil layer, with the top six inches being capable of supporting vegetation. The site shall be graded to eliminate ponding, while minimizing erosion. Upon final cover placement across the site, the owner will notify DEP within 30 days. Storm water will be controlled via retention swales surrounding the site. The swales are sized to accommodate one-half inch volume across the site. These specifications are those proposed to be installed and operated at the site in return for the grant of the general permit and are necessary elements of the negotiations and ultimate settlement agreement reached embodied in the Consent Order. Thus, they are required by the Consent Order, should it become final agency action. Chief among the Petitioner's concerns is the matter of the alleged non-compliance of the disposal site and facility with zoning for that area and land-use ordinances, as well as concerns regarding property values, tax assessments and the inherent difficulty in re-sale of homes caused by the presence and operation of the facility. 2/ The Petitioner, whose members, among others, are a number of adjoining landowners, some of whom testified, also complains of pollution of the water body involved, the standing water in the bottom of the borrow pit. Witness Mitchell, as well as Respondent's Exhibit 4, concerning the conditions under which the general permit will be obtained and operated (conditions also repeated in the Consent Order), established that the deposition of only construction and demolition debris and clean fill in the water will pose no pollution which violates Section 403.161, Florida Statutes, and attendant rules. The terms in the Consent Order, which require the general permit and the conditions referenced in the Respondent's Exhibit 4, concerning the general permit, will result in minimal hazards of pollutants entering surface or ground waters, or in polluted air or water emanating from the site in violation of regulatory strictures, assuming frequent inspections by DEP are made to insure compliance. Thus, it has been established that the proposed Consent Order is reasonable under the circumstances. 3/
Recommendation Based on the foregoing Findings of Fact and Conclusions of Law, it is RECOMMENDED that the Consent Order issued in the case of State of Florida, Department of Environmental Protection v. Whitrock Associates, Inc. be ratified and adopted as final agency action, in accordance with Chapter 120, Florida Statutes. DONE AND ENTERED this 16th day of January, 1996, in Tallahassee, Florida. P. MICHAEL RUFF, 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 22nd day of January, 1996.
Findings Of Fact On January 31, 1979, Respondent Okaloosa County Board of County Commissioners filed an application with the Northwest Florida District Office of Respondent Department of Environmental Regulation (DER) to construct a solid waste resource recovery and management facility near Baker, Florida at the intersection of State Road 4 and State Road 4B. The proposed facility would be a sanitary landfill approximately 36 acres in size which would receive solid waste for disposal from the municipalities of Baker, Milligan, Holt, Crestview, and Blackman. Approximately six to eight additional acres at the site were previously used by the County as a dump for household trash and garbage for a period of approximately eight years. Some of the waste was burned and the remainder was buried. (Testimony of Rogers, Long, Exhibit 1) The proposed landfill is located in a rural area primarily used for agriculture which is sparsely populated. The site is surrounded by forested lands but some recent removal of trees has opened a portion of the site to public view from State Road 4. The land at the site slopes gradually in a west- east direction, and the slope is more pronounced on county land adjoining the east border of the site for a distance of about 900 feet. At this location, several springs form the headwaters of Mill Creek which flows cast through two lakes located on about 224 acres of private property owned by Petitioners Donald C. and Mary Ann Long. Mill Creek becomes a defined water course after leaving the Long property and flows into the Yellow River which is approximately two and one-half miles from the Mill Creek headwaters. The Yellow diver flows some 10 to 20 miles into Blackwater Bay near Milton. A shallow well from which potable water 15 obtained is located on the Long property but not within 1,000 feet of the landfill site. (Testimony of Rogers, Long, Exhibits 1-2) The applicant intends to use the trench method in disposing of solid waste. Trenches will be excavated to a depth of about 15 feet, but in no case will the bottom of a trench be underlain by less than two feet of the "fine sandy loam" which occurs in a layer of varying depth beneath the overlying Lakeland sand soil. Test holes dug in the landfill site indicate that the bottom of the "fine sandy loam" layer in depths of some three to twelve feet is located about eighteen feet below the surface of the ground. The applicant intends to check at 100 foot intervals while digging trenches to insure that at least two feet of that material underlies the trench bottom. If not, sufficient additional amounts of the material will be placed in the trench and compacted to make a two-foot thick layer. There will be a distance of 50 feet between centers of trenches. The trenches will be 30 feet wide at the top and 15 feet wide at the bottom. The bottom of each trench will have a slope of less than 5 percent designed to drain the trenches and lifts of rainwater before they are filled. The upper lift will vary in depth from 5 to 7 feet depending upon the final contour desired. Wastes will be deposited either at the top or bottom of the working face of the trench and will be spread by a crawler tractor in two foot layers and then compacted. Compacted waste will be covered daily with one foot of soil and a final cover of at least two feet of sandy clay material will be obtained from a county borrow pit adjacent to the landfill and placed over trenches to prevent the movement of water into the buried solid waste. (Testimony of Rogers, Edmisten, Exhibits 1-2) The applicant plans to construct a barrier to contain the movement of leachate along the eastern border of the landfill which will be a minimum of five feet wide and as deep as necessary to "tie-in" with the existing layer of "fine sandy loam" beneath the site. The barrier is designed to prevent leachate from moving horizontally downslope toward Mill Creek. The barrier material will be compacted, but not the sides of the trenches. (Testimony of Rogers, Edmisten) The groundwaters under the site are from 55 to 65 feet below the surface of the land. Although the elevation of groundwaters normally will follow the contour of the land surface, borings at the site have not been made to the depth of the watertable. The approximation of the depth of the groundwaters was obtained from data of two monitoring wells located on county land directly east of the proposed landfill site. Twenty-four holes were dug across the site to determine the location of the "fine sandy loam" soil layer which exists below the surface. Eight additional holes were dug to obtain samples of the material for a texture analysis. In its natural state, this material has a permeability rate of about 2.5 to 5 inches per hour. After compaction, the permeability rate will be about .02 to .2 inches per hour. No permeability rate is required by pertinent DER regulations for liner material. Recent soil tests of material taken from the county borrow pit some 200 yards west of the landfill site showed a permeability rate of .004 inches to .0027 inches per hour. A recent sample taken from the bottom of an existing pit at the landfill reflected a permeability rate of .01 inch per hour. Proposed guidelines of the U.S. Environmental Protection Agency contemplate a permeability rate of only .00014 inches per hour for liner materials to restrict the rate of flow of leachate from the bottom of a landfill. The material proposed to be used by the applicant for liner material therefore will permit fairly rapid movement of leachate through the sides and bottoms of trenches, and under the eastern barrier. Further, the coarser sand underlying the "fine sandy loam" liner layer has a much higher permeability rate. As a result, an unknown amount of leachate will eventually reach the groundwater table and flow laterally downslope in an easterly direction. Leachate generation will be impeded by the vegetated, relatively impervious final top layer over the landfill, the wedge of soil located between each trench, and the eastern barrier. These measures will serve also to attenuate suspended solids in the leachate, but not organic materials and most metals. There will also be a certain amount of dilution after any leachate reaches the groundwater table. (Testimony of Rogers, Edmisten, Meister, Tomlinson, Exhibits 1-2, 5, 7) Water samples taken from in and around the area of the springs located both on county and private property to the east and from wells in the general area show that the water generally is of high quality. There is no indication that past landfill operations at the site have degraded the water quality in the vicinity of the nearby creeks, ponds and wells. (Testimony of Meister, Rogers, Long, Exhibits 1-2, 8-9) The applicant plans to control surface runoff and any consequent erosion by means of terraces, berms, and swales. However, other than notations on engineering plans of provision for a highway drainage swale, no design of such items is shown in the application. Prior erosion in the area has been satisfactorily corrected in the past by the county by the use of similar methods to those planned for the landfill site. (Testimony of Rogers, Long, Exhibit 2) The application was reviewed by DER's Southwest District permitting engineer. He found that the application and supporting documents met the statutory and regulatory criteria for the issuance of a construction permit. However, soil borings did not extend at least ten feet below the proposed excavations. (Testimony of Diltz, Exhibit 2) By letter of March 27, 1979, the Northwest District Manager of DER issued a Notice of Intent to issue a construction permit for the proposed sanitary landfill under standard and special conditions. The special conditions required construction of two approved monitoring wells east of the landfill and analysis of water samples from the wells and from a surface water sampling point in the headwaters of Mill Creek prior to issuance of an operation permit. A further condition required the applicant to submit verification that the bottoms of trenches contained at least two feet of the material specified in the application. At the hearing, DER and Okaloosa County submitted a stipulation wherein they agreed that additional monitoring wells should be placed upgradient from the site, at the downstream boundary of the first trench, at the north end of the clay barrier, and immediately east of boring number 8 prior to issuance of an operation permit. The conditions further required that well logs will be kept on all monitoring wells and reports on soils, geology and groundwater elevation he submitted to DER prior to issuance of an operating permit. Further, any identification of leachate contamination in the wells by a method to be spelled out in any operation permit will require extension of the earthen barrier west to State Road 4. Finally, a special condition required that the bottom lining material of all trenches and the barrier must be compacted prior to the issuance of an operating permit. (Exhibit 4)
Recommendation That the requested permit be issued to the Okaloosa County Board of County Commissioners as herein specified. DONE and ORDERED this 28th day of March, 1980, in Tallahassee, Florida. THOMAS C. OLDHAM Hearing Officer Division of Administrative Hearings 101 Collins Building Tallahassee, Florida 32301 (904) 488-9675 COPIES FURNISHED: Honorable Jacob Varn Secretary, Department of Environmental Regulation 2600 Blair Stone Road Tallahassee, Florida 32301 Douglas H. MacLaughlin, Esquire Assistant General Counsel Department of Environmental Regulation 2600 Blair Stone Road Tallahassee, Florida 32301 Wright Moulton, Esquire Post Office Box 591 Pensacola, Florida 32593 John R. Dowd, Esquire Okaloosa County Attorney Post Office Box 1964 Ft. Walton Beach, Florida 32548
Findings Of Fact Respondent Jackson County proposes to build a Class I landfill in western Jackson County, about 1.5 miles south of Campbellton on the west side of State Road 273. The named petitioners live near the proposed site, and all parties stipulated to petitioners' standing or party status on account of the proximity of their homes. The forecast is that the proposed landfill would be in service for 15 years, during the last of which it would receive wastes generated by 16,000 persons. Contingent on issuance of the construction permit it seeks in these proceedings, Jackson County has agreed to purchase 85 to 89 acres in section 15, township 6N, range 12W, of which 55 acres would be devoted to the proposed landfill. About ten of the remaining acres are covered by the southern reaches of Grant Pond. Grant Pond may be a sinkhole, but there is no connection between its waters and the Florida aquifer. There is no evidence of sinkhole activity on the site at the present time. One hundred ten feet from the southwest boundary of the proposed site long-time residents have shallow wells from which they once drew water with buckets. There are mostly small farms in the area. A trailer and 6 to 8 homes are located within 1,000 yards of the proposed site. LEACHATE NOT ANTICIPATED Jackson County contemplates eventually dumping 215 cubic yards daily of residential, commercial and agricultural wastes including sewage sludge, in a series of "cells" to H developed seriatim on the site. Developing a cell would entail digging a pit 15 feet deep, 200 feet wide and 650 feet long, lining it with some of the clay removed in excavating, and compacting the two-foot-thick clay bottom liner to 90 percent Proctor. The uncontroverted testimony was that such a liner would be impermeable. A cell is expected to accommodate about a year's worth of refuse. The plan is to have one cell in operation and another in reserve at all times. Waste would be compacted and then covered over with clay soils daily to minimize the possibility of leachate formation. In addition, a six-inch layer of clay would be put down at the end of each "lift," more or less weekly. Once the cell was completely filled, it would be covered with an even thicker layer of clay and/or other materials specified by applicable regulations. Against the possibility of leachate formation before the cell is finally sealed off, the bottom of the cell would be sloped (4:1) so that any leachate generated would accumulate at one point in the cell, from which it could be pumped to a leachate holding pond. The leachate holding pond is also to be lined with impermeable clays. The engineer who designed the project predicts that no leachate whatsoever will be generated and the project plans do not identify the specific method for disposing of leachate, once it reaches the holding pond. Depending on the quality and consistency of any leachate, it could be left in the holding pond to evaporate, or be removed by truck for disposal off site; or be treated biologically and/or chemically before being spread on site. STORMWATER The stormwater management system consists of a series of elongated detention ponds and two ditches, or swales, that drain into Grant Pond. The detention ponds are to be 1.2 feet deep, have varying widths (26.5 to 64 feet), with sides sloping at a 4:1 ratio, and vary in length from 1,000 to 1,600 feet. Water that would accumulate in them as a result of 3.2 inches of rainfall (the amount a 25-year one-hour storm would bring) would fill the ponds. The ponds are designed to overflow through baffled culverts along the swales into Grant Pond. The soils are such that 3.2 inches of rainfall could percolate into the unsaturated soil from the holding ponds in 72 hours. The closest baffle to Grant Pond would be some 200 feet distant; significant sheet flows would also enter Grant Pond. The landfill is designed to insulate stormwater runoff from contamination by waste or leachate. Only when wastes in an almost filled cell had not yet been covered would there be danger that stormwater falling on wastes would end up in the flow of stormwater draining across the surface of the proposed site and ultimately into Grant Pond. This danger could be all but eliminated by placing the last layer of wastes deeply enough in the cell. The plan is to ring the cells with excavated material, as well. If leachate is generated and pumped to the leachate holding pond and if there is enough of it to fill the pond or nearly to fill it, a storm might result in an overflow from the leachate holding pond that would drain eventually into Grant Pond. This danger, too, could be all but eliminated by operating the landfill so that the level of leachate in the holding pond always remained low enough, and by disposing of all leachate, if the facility generates any, off site, rather than "by landspreading on site." Jackson County's Exhibit No. 6. The same people who manage the landfill in eastern Jackson County would manage the landfill here proposed. No leachate has been generated at Jackson County's eastern landfill, but litter that can blow out of the cells at the eastern landfill does. If the same practices obtain at the new site, airborne litter that does not reach Grant Pond on the wing, may later be washed into the Pond by stormwater, even though the baffles would eliminate floatables in the water flowing out of the detention ponds. TWO AQUIFERS The parties are in agreement "that the leachate and or other pollutants will probably never reach the Floridan Aquifer." Petitioners' Closing Argument, p. 4. The Floridan aquifer is a limestone rock formation underlying the proposed site at depths varying between 30 and 130 feet, and separated by a layer of stiff clay from the overlying silts and sands. The stringers of saturated sands lying near the surface comprise a distinct, surficial aquifer that lies between five and twenty feet below ground over most of the site but crops out as Grant Pond on the northern edge of the property. No cell would be built within 200 feet of the highwater line of Grant Pond. The water table in the surficial aquifer, which yields potable water, is a subdued replica of the ground topography. Surface water from the southwest part of the proposed landfill site, where wells are closest, flows into Grant Pond. Water sometimes stands on the southeast part of the site, an area one witness described as boggy. A trailer stands on a parcel adjoining the property to the southeast with its near boundary 300 or 400 feet from the site proposed for the first working cell. No cell is to be dug within 500 feet of any existing or proved potable water well. The application contemplates monitoring wells. Groundwater in the Floridan aquifer flows south. Three wells to a depth of about 45 feet each are planned for south of the cells so that, in the unlikely event that pollution reached the Floridan aquifer, it could be promptly determined. There will also be a monitoring station in Grant Pond so the effect of stormwater runoff on water quality in the pond can be gauged. One well, 250 feet east of the west property boundary and 250 feet south of the north boundary, is planned for monitoring the surficial aquifer. TOXIC WASTES Toxic wastes are generated in Jackson County. Hundreds of drums with a little something still left in them are brought to the County's eastern landfill. No toxic wastes can lawfully be dumped at landfills like the one Jackson County proposes to build near Campbellton, but containers which once held toxic substances can lawfully be disposed of at such landfills, provided they have been rinsed out with water three times. Signs to this effect are to be posted. The landfill would have a single entrance. An attendant would be on duty during the landfill's hours of operation (8 to 5, five days a week), but would not be expected to have sampling equipment or to enforce the triple rinsing requirement, if past practice at the eastern landfill is any indication. When the landfill is not open, according to the applicant's engineer, green boxes will nevertheless be available for dumping. SCREENING Litter fences are planned only "if needed." A green belt 100 feet wide is proposed along the southern and the eastern perimeter of the property. "Appropriate trees and shrubs" are to be planted there, perhaps bamboo or oleander. SEPTAGE DISPOSAL PITS In a letter dated December 1, 1982, under the heading "septage disposal pits", C. G. Mauriello, the engineer who designed the proposed landfill, wrote DER's Wayne Hosid: This item was not shown on the original application but should be included. It has been recognized by the County that disposal of this type waste material should be handled at the new west site and therefore, provisions will be made for the disposal. Basically, a trench type operation similar to the East Site will be provided. The location of the disposal area will be to the south of the Future Holding Pond and north of the Salvage Area. Jackson County's Exhibit No. 6. A drawing prepared by the same person in July of 1982 shows a "septic tank/drainfield" southeast of the location described for the "septage disposal pits." DER's Exhibit No. 1. The permit DER proposes to issue contains numerous conditions, including the following: Construction of septage drying beds will be identical to those permitted under Permit No. 5032-22067 for Jackson East Sanitary Landfill as modified on July 20, 1981. Jackson County's Exhibit No. 9. Permit No. 5032-22067 was not made a part of the record in these proceedings. Incidentally, the word "septage" does not appear in Webster's Third New International Dictionary (1971). A septic tank or any similar system would differ significantly from the systems described by the witnesses who testified at hearing. Septic tanks eventually discharge their contents into surrounding soils, after treatment by anaerobic bacteria. Septic tanks cannot be sealed off by clay or anything else from the earth around them, if they are to function properly. Sooner or later discharge from any septic tank on site could be expected to enter the surficial aquifer and, ultimately, through the groundwater, Grant's Pond. Nothing in the evidence indicates how long it might take for any such effluent to reach the groundwater or leach into Grant Pond; or what its chemical composition might be. MORAL OBJECTION STATED Petitioners' witness Frederick L. Broxton, Sr. testified that, even conceding the absence of a scientific or legal basis for objection to the proposed project, it was immoral for the County Commission to choose a site so close to people's homes, when there was so much land available in that part of the county, where nobody lived. PROPOSED FINDINGS CONSIDERED All parties filed posthearing submissions which have been considered in preparation of the foregoing findings of fact. Respondent Department of Environmental Regulation filed proposed findings which have been adopted, in substance, for the most part. Where proposed findings have not been adopted, it is because they have been deemed immaterial, unsupported-by the weight of the evidence, subsidiary or cummulative.
Recommendation Upon consideration of the foregoing, it is RECOMMENDED: That the Department of Environmental Regulation issue Jackson County a permit for construction of a landfill at the site proposed subject to the conditions (except condition No. 24) stated in the proposed permit, Jackson County's Exhibit No. 9, and subject to the following additional conditions: (a) any leachate generated shall be disposed of off site (b) the whole landfill shall be fenced, and the view from State Road 273 shall be obstructed (c) portable fences shall be placed around any cell in use (d) an additional monitoring well shall be placed between the well southeast of the site and the nearest cell and (e) no septic tank or "septage" disposal pits shall be built on site. DONE and ENTERED this 17th day of August, 1983, in Tallahassee, Florida. ROBERT T. BENTON, II Hearing Officer Division of Administrative Hearings The Oakland Building 2009 Apalachee Parkway Tallahassee, Florida 32301 (904) 488-9675 Filed with the Clerk of the Division of Administrative Hearings this 17th day of August, 1983. COPIES FURNISHED: Robert L. Travis, Jr., Esquire 229 East Washington Street Quincy, Florida 32351 J. Paul Griffith, Esquire P. O. Box 207 Marianna, Florida 32446 E. Gary Early, Esquire Department of Environmental Regulation 2600 Blair Stone Road Tallahassee, Florida 32301 Victoria Tschinkel, Secretary Department of Environmental Regulation 2600 Blair Stone Road Tallahassee, Florida 32301
The Issue The issue to be determined in this proceeding is whether Angelo's Aggregate Materials, LTD ("Angelo's") is entitled to permits from the Department of Environmental Protection ("Department") to construct and operate a Class I landfill in Pasco County.
Findings Of Fact The Parties The Department is the state agency with the power and duty under chapter 403, Florida Statutes, to review and take action on applications for permits to construct and operate solid waste management facilities, including landfills. Angelo's is a Florida limited partnership authorized to conduct business under the name Angelo's Recycled Materials. Angelo's filed the permit applications which are the subject of this proceeding. Angelo's owns the property on which the proposed landfill would be constructed and operated. Crystal Springs Preserve is a Florida corporation that owns approximately 525 acres in Pasco County, Florida on which is located Crystal Springs, a second magnitude spring that flows into the Hillsborough River. The property is about 10 miles south of Angelo's proposed landfill site. Crystal Springs Preserve's primary business activities are selling spring water for bottling for human consumption and operating an environmental education center that focuses on Crystal Springs and the Hillsborough River. Crystal Springs Preserve hosts approximately 50,000 visitors annually at the environmental education center. Crystal Springs Preserve holds a water use permit which authorizes it to withdraw up to 756,893 gallons of water per day (annual average) from Crystal Springs for production of bottled water. The water is transported about three miles to a water bottling facility operated by Nestlé. Nestlé is a private corporation engaged in the business of bottling and selling spring water. Nestlé purchases spring water from Crystal Springs Preserve. Nestlé's "Zephyrhills Spring Water" brand is composed of approximately 90 percent Crystal Springs water and 10 percent Madison Blue Spring water. The only water treatment applied by Nestlé is filtering the water to remove gross contaminants and passing the water through ultraviolet light or ozone to kill any potential bacteria before bottling. Nestlé has established "norms" for its spring water and would not be able to use the water from Crystal Springs if its chemical composition varied significantly from the norms. WRB is a Florida corporation that owns 1,866 acres in Pasco County known as Boarshead Ranch. Boarshead Ranch is adjacent to the east and south of Angelo’s property and is approximately 3,000 feet from the proposed landfill at its closest point. Boarshead Ranch is currently being used for agricultural, recreational, residential, and conservation purposes, including wildlife management. Nearly all of Boarshead Ranch is subject to a conservation easement held by the Southwest Florida Water Management District (SWFWMD). The conservation easement allows WRB to continue agricultural operations. Numerous agricultural water wells are located on Boarshead Ranch. WRB holds a water use permit which authorizes the withdrawal of 820,000 gallons per day (gpd) (annual average) for a number of uses, including production of agricultural products, animal drinking water, and personal use. The City of Zephyrhills is located in Pasco County and is a municipal corporation. Zephyrhills' water service area encompasses Zephyrhills and portions of Pasco County. Zephyrhills owns, operates, and maintains a water distribution and transmission system of pipes, pump stations, and storage tanks within the City and its service area. Zephyrhills holds a water use permit which authorizes nine potable water supply wells with a combined withdrawal of 2.9 million gallons per day ("mgd") (annual average). Zephyrhills has two new production wells located about two miles southeast of the proposed landfill. The City of Tampa owns and operates the David L. Tippin Water Treatment Plant, the Hillsborough River dam, and the City of Tampa reservoir on the Hillsborough River. Flows from Crystal Springs make up a substantial amount of the water in the Hillsborough River, especially during drought conditions when the spring flow accounts for about 50 percent of the flow. The City of Tampa holds a water use permit which authorizes the withdrawal 82 mgd (annual average). The City of Tampa owns, operates, and maintains a water distribution and transmission system of pipes, pump stations, and storage tanks within the City and its service area. Carl Roth, Marvin Hall, and Louis Potenziano own property in Pasco County near the proposed landfill site. Roth's property is 3.5 miles west of the proposed landfill site; Hall's property is located approximately one mile southwest of the site; and Potenziano's property is 1.6 miles to the south/southeast of the site. Roth, Hall, and Potenziano have water wells on their properties. The record does not establish that John Floyd owns property in the area. Floyd and Associates, Inc., owns about 55 acres in the area and holds a water use permit authorizing the withdrawal of water for agricultural uses. The Stipulated Agreement On March 1, 2010, Angelo's filed with DOAH a "Stipulated Agreement" signed by all parties. The Stipulated Agreement states in relevant part: Angelo's shall provide a final design, revised complete permit application and site investigation (referred to jointly as "Revised Submittal") to DEP with copies to all Parties and DEP shall make a completeness determination prior to this proceeding being set for a new final hearing date. * * * Angelo's shall not revise its permit application or supporting information beyond the Revised Submittal prior to or during the final hearing except in response to issues raised by DEP. It appears that the Aligned Parties did not remember the Stipulated Agreement until the commencement of the final hearing. They did not object before then to any of the evidence which Angelo's had prepared or intended to prepare for hearing on the basis that it violated the terms of the Stipulated Agreement. At the commencement of the hearing, Nestlé argued that the Stipulated Agreement barred Angelo's from revising its application or presenting new support for its project at the final hearing. The Stipulated Agreement is unusual and the necessity for Angelo's to make any concessions to the Aligned Parties in order to obtain their agreement to an abeyance was not explained. Allowing an applicant time to amend a permit application is usually good cause for an abeyance. The Stipulated Agreement allowed Angelo's to continue to respond to issues raised by the Department. Angelo's contends that all of the evidence it presented at the final hearing qualifies as a response to issues raised by the Department. The Proposed Landfill Angelo's applied to construct and operate a Class I landfill with associated buildings and leachate holding tanks. Application No. 22913-001-SC/01 corresponds to the construction permit application and Application No. 22913-001-SO/01 corresponds to the operation permit application. A Class I landfill is a landfill authorized to receive Class I waste, which is solid waste from households and businesses. Class I waste does not include hazardous waste, yard waste, or construction and demolition debris. See Fla. Admin. Code R. 62-701.200(13) and (14). The proposed landfill would be approximately 30 acres in size. It is part of a 1,020-acre parcel owned by Angelo's that is west of County Road 35 and south of Enterprise Road in Pasco County. The site is currently leased for cattle grazing and hay and sod production. There are also spray fields, orange groves, and a pond on the 1,020-acre parcel. Angelo's would construct the landfill by first clearing the 30-acre site. It would then excavate and fill to create the design subgrade or floor of the landfill with slopes required for the liner system. The subgrade would be compacted with a vibratory roller. After the subgrade compaction, the grouting plan would be implemented. The grouting plan calls for grouting 39 subsurface locations on the site that have voids, loose soils, or other unstable characteristics. A liner system would be installed after the grouting is completed and the subgrade is finished. From the bottom upward, the liner system would begin with a 12-inch layer of clay, over which a reinforcement geotextile would be installed, followed by another 12-inch layer of clay. This reinforcement geotextile is in addition to the double liner system required by Department rule. Its purpose is to maintain the integrity of the liner system in the event that a sinkhole occurs beneath the landfill. Installed above the reinforcement geotextile and clay layer would be a 60-millimeter high-density polyethylene ("HDPE") geomembrane, followed by a HDPE drainage net. These last two components comprise the secondary leachate collection system. Above the HDPE drainage net would be the primary leachate collection system, consisting of another 60-millimeter HDPE geomembrane and HDPE drainage net, followed by a geotextile, then a 12-inch sand layer for drainage, and an additional 12-inch sand layer for protection against puncture of the HDPE liner. A 48-inch layer of selected waste, free of items that could puncture the liner, would be the first waste placed over the primary leachate collection system. "Leachate" is "liquid that has passed through or merged from solid waste and may contain soluble, suspended, or miscible materials." See Fla. Admin. Code R. 62-701.200(66). Leachate would be collected through a system of perforated pipes that empty into a sloping trench with a leachate collection pipe. The leachate collection pipe would run down the center of the landfill to the lowest point where a pump would send the collected leachate through a force main 0.25 miles to storage tanks. Five above-ground storage tanks would be installed on a concrete pad with capacity to store 90,000 gallons of leachate. The stored leachate would be periodically transported to an offsite location, such as a wastewater treatment facility, for disposal. Sinkholes and Karst The terms "sinkhole" and "sinkhole activity" are not defined by Department rule, but the statutory definitions in chapter 627, a chapter dealing with insurance coverage for homes and other buildings, are generally consistent with the scientific meanings of these terms. The term "sinkhole" is defined in section 627.706(2)(h) as: a landform created by subsidence of soil, sediment, or rock as underlying strata are dissolved by groundwater. A sinkhole forms by collapse into subterranean voids created by dissolution of limestone or dolostone or by subsidence as these strata are dissolved. The term "sinkhole activity" is defined in section 627.706(2)(i) as: settlement or systematic weakening of the earth supporting the covered building only if the settlement or systematic weakening results from contemporaneous movement or raveling of soils, sediments, or rock materials into subterranean voids created by the effect of water on a limestone or similar rock formation. Sinkholes occur throughout Florida. There have been many reported and confirmed sinkholes in Pasco County. The more common type of sinkhole that has occurred on the Brooksville Ridge is a "cover subsidence" sinkhole, which is caused by voids in the limestone and the downward movement--"raveling"--of overlying soils into the cavity. Eventually, the loss of soils in the raveling zone will propagate upward until the soils at the ground surface also move downward and a depression is formed at the surface. Cover subsidence sinkholes develop slowly and are usually small, less than ten feet in diameter. Less common are "cover collapse" sinkholes, which can form in a matter of days or hours as the result of the collapse of the "roof" of a dissolved cavity in the limestone. These sinkholes are usually large and deep. The occurrence of a sinkhole does not always mean that areas near the sinkhole are unstable. However, the occurrence of a sinkhole is reasonable cause for concern about the stability of nearby areas and a reasonable basis for the Department to require thorough geologic investigations. "Karst" refers to limestone that is undergoing dissolution and it is common in Florida. A sinkhole forms in karst. "Epikarst" is limestone that was weathered while exposed above sea level millions of years ago before being submerged again. It is generally softer and more permeable than unweathered limestone. "Paleokarst" refers to karst that is very old in geologic time. Paleosinks are old sinkhole features in the paleokarst. A paleosink may no longer be unstable because it has been filled in for thousands or millions of years. A "lineament," or a "photolineament," is a relatively straight line seen in the topography or aerial photographs of the ground surface in an area. It might be defined by soil color, sloughs, ponds, wetlands, or other land features that follow a linear path. Lineaments are sometimes, but not always, associated with subsurface fractures in the bedrock where one would expect to also find active karst, sinkholes, and relatively rapid groundwater flow. Even where there is no lineament, there can be fractures in limestone that, when extensive enough, will allow for "fractured," "preferential," or "conduit flow" of groundwater. Fractured flow can occur in a small area or may go on for miles. Springs in Florida are usually associated with fractured flow or conduit flow that allows groundwater to move through the aquifer a long distance relatively rapidly, in weeks rather than decades. Geotechnical Investigation The Department's rules require subsurface conditions to be explored and described, including soil stratigraphy, soft ground, lineaments, and unstable areas, but the rules do not require the application of any particular geologic testing technique. An applicant's testing program is primarily a function of the professional judgment of the applicant’s geologist in cooperation with Department staff. The amount of geological testing done by Angelo's during its initial testing was similar to what was done for recent landfill applications. Angelo's conducted additional testing to respond to Department concerns and to prepare for the final hearing in this case, making the total amount of testing at Angelo's proposed site more extensive than is usual for a proposed landfill. The geologic investigation conducted by Angelo's experts to determine subsurface features, including any sinkholes, employed several technologies. Split Spoon Penetrometer Test (SPT) or SPT borings were drilled with a drill rig that advances a split spoon sampler into the ground with a 140 pound hammer. The hammer is dropped 30 inches and the number of blows required to drive the sampler each successive 12 inches is referred to as the "N" value and indicates soil strength and density. The higher the N value, the denser the soil. When the material is so dense the drill rod cannot (essentially) be hammered deeper, the N value is shown as "R," which stands for "refusal." SPT Bore logs also note any observed "weight of hammer," "weight of rod," or "loss of circulation." These terms describe areas where the drilling encounters very soft material or voids. Weight of rod, for example, means the weight of the drilling rod, by itself, with no hammer blow, was enough to cause the rod to fall deeper through the soil or rock. Cone Penetrometer Test ("CPT") borings were also conducted. CPT borings are relatively shallow, performed with a hand-held rod and special tip that the operator pushes into the ground. The CPT equipment continuously measures and records tip resistance and sleeve resistance as the rod moves downward through soils. It is helpful in some applications, but is less precise in determining soil type, strength, and compressibility than SPT borings and cannot be used to explore deep zones. Ground penetrating radar ("GPR") studies were used. GPR equipment transmits pulses of radio frequency waves into the ground. The manner in which the radio waves are reflected indicates the types of soil and rock encountered. It can also detect cavities and other features that would suggest karst activity. When the GPR identifies geologic features of interest, they can be further investigated with SPT borings. Another investigative tool used by Angelo's was Multiple Electrode Resistivity ("MER"). MER uses a grid of wires and electrodes and the equipment interprets the resistivity of electrical signals transmitted through the subsurface. MER data can be displayed in a two dimensional or three dimensional format, depending on the software program that is used to process the data. Like GPR, MER is useful for indentifying geologic features of interest that can be further explored with SPT borings. However, GPR generally has good resolution only near the ground surface, while MER has good resolution to a depth of 100 feet. The Regional Geology The proposed site is in a geologic transition zone on the eastern flank of a regional, geological feature known as the Brooksville Ridge. It is a transition zone for both the Suwannee Limestone and Hawthorn Group. The Brooksville Ridge was formed when it was part of the coastline. In its geologic past, the Brooksville Ridge experienced sea level changes, weathering, erosion of sediments, and beach reworking. The general layering of geologic features on the Brooksville Ridge, from the top down, begins with topsoil and a layer of sand. Under the sand layer is the Hawthorn Group, an older geologic layer consisting of a heterogeneous mix of limestone, clays, and sands which generally range in depth from slightly under 60 feet to 80 feet or more. It was formed by river and wind erosion, flushing, and re-deposition in a beach dune environment. Below the Hawthorn Group is the Suwannee Limestone Formation, which is present throughout eastern Pasco County. The upper surface of the Suwannee Limestone Formation is undulating, due to a gradual chemical weathering of its upper surface, representing a "paleokarst environment." Underlying the Suwannee Limestone Formation is the Ocala Limestone Formation. It extends throughout most of Florida. It is composed of nearly pure limestone and is considered the Floridan Aquifer. It extends across the site’s subsurface. Angelo's used the Florida Geologic Survey's data base to determine there are six sinkholes within five miles of the proposed landfill. A seventh sinkhole, not in the data base, is the 15- foot sinkhole at the Angelo's Enterprise Road Facility landfill, a Class III landfill (yard waste and construction and demolition debris) about a mile northwest of the proposed site. Angelo's contends that the sinkhole at its Class III landfill was "induced" during construction of the facility by the diversion of stormwater runoff to an area where overburden had been removed. The average diameter of the seven sinkholes is 11.9 feet. The Geology of the Proposed Site Rule 62-701.410(2)(c) requires a geotechnical site investigation and report, which shall: Explore and describe subsurface conditions including soil stratigraphy and ground water table conditions; Explore and address the presence of muck, previously filled areas, soft ground, lineaments, and sinkholes; Evaluate and address fault areas, seismic impact zones, and unstable areas as described in 40 C.F.R. 258.13, 258.14 and 258.15; Include estimates of the average and maximum high ground water table across the site; and Include a foundation analysis to determine the ability of the foundation to support the loads and stresses imposed by the landfill. It may include geotechnical measures necessary to modify the foundation to accommodate the imposed loads and stresses. The foundation shall be analyzed for short-term, end of construction, and long-term stability and settlement conditions. Considering the existing or proposed subgrade conditions and the landfill geometry, analysis shall include: Foundation bearing capacity; Subgrade settlements, both total and differential; and Subgrade slope stability. Angelo's conducted a geotechnical site investigation, but it was not adequate, as discussed below and in sections I. and J. The proposed landfill site is geologically complex, having features that are discontinuous horizontally and vertically. The site has karst features or areas where the limestone has dissolved. There is a clay layer in some areas, but it is not continuous and its depth and thickness vary. There are deposits of hard and soft sands at various depths. There are pinnacles of limestone surrounded by softer materials. Photographs from a quarry called the Vulcan Mine, located on the western flank of the Brooksville Ridge, show exposed features in the top 20 to 30 feet of the Suwannee Limestone in the region. The features at the Vulcan Mine are roughly similar to features at the Angelo's site. There are a number of shallow depressions on the surface of the ground on the Angelo's site. The origin and significance of these depressions was a matter of dispute. The Aligned Parties believe they represent sinkhole activity, but the evidence presented did not rise to the level of proof. However, Angelo's did not prove they were unassociated with geotechnical issues that could affect the proposed landfill. Angelo's offered no reasonable explanation for the depressions. Determining the exact cause of the depressions may not be possible even with more extensive investigation, but it was Angelo's responsibility as the permit applicant, pursuant to rule 62-701.410(2)(c), to make a greater effort to account for them. Angelo's initial permit application identified two intersecting lineaments on Angelo's property, based on aligned lowlands, enclosed valleys, and ponds. Angelo's contends the lineaments do not reflect an unstable subsurface or fractured limestone. The Aligned Parties contend that the lineaments are regional features and reflect fractures in the bedrock. They also contend that the onsite pond, which is located along the lineament, is an old sinkhole. The Aligned Parties did not prove the proposed landfill site is above an area of fractured bedrock, but the evidence presented by Angelo's was incomplete and insufficient to show there are no fractures. The limestone on the site was not adequately investigated for voids and fractures. Angelo's did not refute the possibility that the lineaments reflect a significant subsurface feature that could affect both site stability and groundwater movement. The Regional and Local Hydrogeology Rule 62-701.410(1) requires a hydrogeological investigation and site report, which shall: Define the landfill site geology and hydrology and its relationship to the local and regional hydrogeologic patterns including: Direction and rate of ground water and surface water flow, including seasonal variations; Background quality of ground water and surface water; Any on site hydraulic connections between aquifers; For all confining layers, semi-confining layers, and all aquifers below the landfill site that may be affected by the landfill, the porosity or effective porosity, horizontal and vertical permeabilities, and the depth to and lithology of the layers and aquifers; and Topography, soil types and characteristics, and surface water drainage systems of the site and surrounding the site. Include an inventory of all the public and private water wells within a one-mile radius of the proposed landfill site. The inventory shall include, where available: The approximate elevation of the top of the well casing and the depth of each well; The name of the owner, the age and usage of each well, and the estimated daily pumpage; and The stratigraphic unit screened, well construction technique, and static water levels of each well. Identify and locate any existing contaminated areas on the landfill site. Include a map showing the locations of all potable wells within 500 feet of the waste storage and disposal areas to demonstrate compliance with paragraph 62- 701.300(2)(b), F.A.C. Angelo's conducted a hydrogeological investigation, but it was not adequate, as discussed below. Angelo's and the Aligned Parties disputed the hydrogeological characteristics of the proposed landfill site and region. The principal disputes related to the direction and velocity of groundwater flow. Angelo's contends that groundwater flows from the landfill site to the west, making the proposed landfill site part of the Withlacoochee River groundwater basin. The Aligned Parties contend that groundwater flows south toward Crystal Springs and, therefore, the site is within the "springshed" of Crystal Springs. A United States Geological Survey map of the Crystal Springs springshed shows Angelo's proposed landfill site within the springshed. A springshed study done for SWFWMD also indicates the site is within the Crystal Springs springshed, but the District has not always been consistent in its statements about the groundwater basin boundaries in this area. A water chemistry analysis of the groundwater in the area of Angelo's proposed landfill indicates that the site is an area of higher recharge and within the Crystal Springs springshed. The springshed boundary can shift, depending on rainfall. Angelo's hydrogeological evidence was not sufficient to refute the reasonable possibility that the proposed landfill site is within the Crystal Springs springshed. Therefore, the Department's determination whether Angelo's has provided reasonable assurances must account for the threat of contamination to Crystal Springs and the other public and private water supply sources to the south. There are no creeks or streams and only a few lakes in the area between Crystal Springs and the Angelo's site. The absence of surface runoff features indicates it is an area of high recharge to the groundwater. Crystal Springs is in an area of conduit flow. The hydrologic investigation conducted by Angelo's was not thorough enough to characterize surficial aquifer flow and flow between aquifers. The preponderance of the evidence shows more groundwater recharge to the Floridan Aquifer in the area than estimated by Angelo's. Angelo's hydrogeological investigation was inadequate to refute the possibility of fractured flow or rapid groundwater movement at the proposed landfill site. Angelo's contends there is a continuous clay confining layer that would prevent contamination from moving into deep zones, but the preponderance of the evidence shows discontinuity in the clay and large variations in thickness and depth. The landfill's impermeable liner will impede water movement downward from the landfill, but groundwater will still recharge from outside the landfill to carry any contaminants deeper. If fractured flow or conduit flow extends south from the proposed landfill site, any leachate released into the groundwater beneath the landfill could travel rapidly toward the water supply sources of the City of Zephyrhills, Crystal Springs, Nestlé, and the City of Tampa. Whether the Proposed Landfill is in an Unstable Area Rule 62-701.200(2)(a) prohibits the storage or disposal of solid waste "[i]n an area where geological formations or other subsurface features will not provide support for the solid waste." However, the Department has adopted by reference a federal regulation, 40 C.F.R. 258.15, which allows a landfill to be constructed in a geologically unstable area if the permit applicant can demonstrate that engineering measures are incorporated into the design to ensure that the integrity of the landfill’s structural components "will not be disrupted." The parties presented evidence on many disputed issues of fact at the final hearing, but most of the case involved two ultimate questions: whether the proposed landfill site is unstable and, if so, whether Angelo's has proposed measures that would eliminate the unstable conditions and make the site suitable for a landfill. as: An "unstable area" is defined in 40 C.F.R. § 258.15 A location that is susceptible to natural or human-induced events or forces capable of impairing the integrity of some or all of the landfill structural components responsible for preventing releases from a landfill. Unstable areas can include poor foundation conditions, areas susceptible to mass movements, and Karst terrains. There is overwhelming evidence that the proposed landfill site is an unstable area. A considerable amount of evidence presented by Angelo's supports this finding. For example, Angelo's experts agreed there are loose soils, evidence of raveling, and sinkhole activity. These conditions make the site susceptible to natural or human-induced events or forces capable of impairing the integrity of some or all of the landfill structural components responsible for preventing releases from the proposed landfill. The Department's landfill permitting staff requested a sinkhole risk assessment from the Florida Geologic Survey ("FGS"). The State Geologist and Director of the FGS, Dr. Jonathan Arthur, believes the potential for sinkhole formation at the proposed site is moderately high to high. That potential is consistent with the characterization of the area as unstable. Whether the Proposed Engineering Measures Are Adequate Because the site is unstable, Angelo’s must demonstrate that engineering measures have been incorporated into the landfill's design to ensure that the integrity of its structural components will not be disrupted. See 40 C.F.R. § 258.15(a). The engineering measures proposed by Angelo's are discussed below. Because it was found that Angelo's hydrogeological and geotechnical investigations were not sufficient to characterize all potentially unstable features of the subsurface, it was not demonstrated that the proposed engineering measures would overcome the instability and make the site suitable for a landfill. Roller Compaction Angelo's would use roller compaction on the graded floor of the landfill to compact the soils to a depth of about five feet and eliminate any voids within that depth. The Aligned Parties did not contradict Angelo's evidence that its proposed roller compaction will be done in a manner exceeding what the Department usually requires as far as roller force and the number of roller "passes." However, roller compaction will not affect deep voids. Liner System In order to ensure that the landfill’s liner system components will not be disrupted in the event of a sinkhole, Angelo’s proposes to include the reinforcement geotextile discussed above. The Department previously approved the use of geotextile reinforcement, combined with grouting, to demonstrate site stability for the Hernando County Northwest Landfill, which had a comparable risk of sinkhole formation according to the Department. The reinforcement geotextile can span a 15-foot diameter sinkhole without failure. As found above, the average diameter of the seven sinkholes within five miles of the proposed landfill is 11.9 feet. Angelo's proved that the proposed liner system meets all applicable criteria, except the requirement of rule 62- 701.400(3)(a) that the liner be installed upon a geologically stable base. Grouting Plan Angelo's grouting plan would be implemented to fill voids and stabilize areas of loose or weak material. The grouting plan was first designed to grout all locations where there was a Weight of Hammer, Weight of Rod, Loss of Circulation, or loose sands, as indicated by a low blow count. Angelo's revised the grout plan to include several more areas of concern identified later, for a total of 39 locations. Each grout location would have seven grout points, one in the center and six others equally-spaced on a ten-foot radius from the center. If more than ten cubic yards of grout is needed, additional grout points further outward would be injected until the void or loose soils are filled or stabilized. Although Angelo's proposes to grout every boring of concern, that still ties the integrity of the grouting plan to the thoroughness of the borings. The geologic evidence indicates that there are unstable areas which the grouting plan does not address. The Aligned Parties' MER analysis was persuasive in identifying potential areas of instability that were omitted from Angelo's investigation and from its grouting plan. There are other unstable areas existing on the site that should be grouted or otherwise engineered to provide support for the landfill. The grouting plan does not provide reasonable assurance that the integrity of the structural components of the landfill will not be disturbed. Other Issues Raised by the Aligned Parties The Aligned Parties raise a number of other issues, some of which begin with the assumption that the site is unstable and a large sinkhole would form at the landfill. This sometimes mixes issues inappropriately. It has been found that Angelo's did not provide reasonable assurance that the site will support the proposed landfill, but other project elements must be reviewed on their own merits where possible, assuming the site was engineered for stability. Leachate Collection System There is a single leachate collection trench in the center of the two landfill cells, which makes the landfill operate much like a single cell. The two halves of the cell slope toward the center, so that leachate will drain to the leachate collection trench, and the entire landfill slopes to the west, so that the trench will drain to a sump from which the leachate is pumped to storage tanks. At full capacity, the landfill will generate about 40,000 gallons of leachate per day. Careful cutting and grading of the earth is necessary to create the slopes that are essential to the proper functioning of the project’s leachate collection system. Settlement analyses are necessary to assure that the slopes are maintained. Rule 62-701.410(2)(e) requires a foundation analysis which must include a study of "subgrade settlements, both total and differential." "Total settlement" refers to the overall settlement of a landfill after construction and the loading of solid waste. "Differential settlement" compares settlement at two different points. Angelo's did not meet its burden to provide reasonable assurance on this point. The settlement analysis conducted by Angelo's was amended two or three times during the course of the final hearing to account for computational errors and other issues raised by the Aligned Parties. The analysis never came completely into focus. The final analysis was not signed and sealed by a professional engineer. The settlement analysis is dependent on the geologic analysis, which is inadequate. Without adequate settlement and geologic analyses, it cannot be determined that leachate collection would meet applicable criteria. Storage Tanks The Aligned Parties contend that the leachate storage tanks cannot be supported by the site. Because it was found that Angelo's geologic investigation was not adequate to identify all unstable areas, it is also found that Angelo's failed to provide reasonable assurance that the site would support the leachate storage tanks. In all other respects, the Aligned Parties failed to refute Angelo's demonstration that the storage tanks would meet applicable criteria. Groundwater Monitoring Plan The Aligned Parties contend that there is an insufficient number of monitor wells proposed by Angelo's to detect a leak from the landfill and the wells are too shallow. Because it was found that Angelo's did not adequately characterize the geology and hydrology of the proposed landfill site, the monitoring plan does not provide reasonable assurance of compliance with applicable criteria. Cell Design The Aligned Parties contend that the "mega-cell" design proposed by Angelo's provides less flexibility to respond to and isolate landfill problems than other landfill designs with smaller cells, and the mega-cell design could generate more leakage. No evidence was presented to show whether Angelo's design was one that had been approved or rejected in the past by the Department. Although it is not the best landfill design, the Aligned Parties did not show that the proposed design violates any permitting criteria. Operation and Closure The evidence presented by the Aligned Parties in support of their issues regarding the operation of the proposed landfill, such as noise, odor, and traffic, was not sufficient to refute Angelo's evidence of compliance with applicable criteria, with one exception: Angelo's has not provided an adequate contingency plan to show how it would respond to a sinkhole or other incident that required the landfill to be shut down and repaired. Assuming the site was engineered to support the landfill, there is nothing about the Closure Plan that the Aligned Parties showed does not meet applicable criteria.
Recommendation Based on the foregoing Findings of Fact and Conclusions of Law, it is RECOMMENDED that the Department of Environmental Protection deny Angelo's Permit Application Nos. 22913-001-SC/01 and 22913- 002-SO/01. DONE AND ENTERED this 28th day of June, 2013, in Tallahassee, Leon County, Florida. S BRAM D. E. CANTER Administrative Law Judge Division of Administrative Hearings The DeSoto Building 1230 Apalachee Parkway Tallahassee, Florida 32399-3060 (850) 488-9675 Fax Filing (850) 921-6847 www.doah.state.fl.us Filed with the Clerk of the Division of Administrative Hearings this 28th day of June, 2013. COPIES FURNISHED: Carl Roth, Qualified Representative 8031 Island Drive Port Richey, Florida 34668-6220 Christopher M. Kise, Esquire Foley and Lardner, LLP 106 East College Avenue, Suite 900 Tallahassee, Florida 32301-7732 Wayne E. Flowers, Esquire Lewis, Longman and Walker, P.A. Suite 150 245 Riverside Avenue Jacksonville, Florida 32202-4931 Janice M. McLean, Esquire City of Tampa 7th Floor 315 East Kennedy Boulevard Tampa, Florida 33602-5211 Joseph A. Poblick, Esquire City of Zephyrhills 5335 8th Street Zephyrhills, Florida 33542-4312 Doug Manson, Esquire William Bilenky, Esquire Brian A. Bolves, Esquire Manson Bolves, P.A. 1101 West Swann Avenue Tampa, Florida 33606-2637 Jacob D. Varn, Esquire Linda Loomis Shelley, Esquire Karen A. Brodeen, Esquire Fowler, White, Boggs, P.A. 101 North Monroe Street, Suite 1090 Tallahassee, Florida 32302-1547 David Smolker, Esquire Smolker, Bartlett, Schlosser, Loeb and Hinds, P.A. Suite 200 500 East Kennedy Boulevard Tampa, Florida 33602-4936 Stanley Warden, Esquire Christopher Dale McGuire, Esquire Department of Environmental Protection Mail Station 35 3900 Commonwealth Boulevard Tallahassee, Florida 32399-3000 William D. Preston, Esquire William D. Preston, P.A. 4832-A Kerry Forest Parkway Tallahassee, Florida 32309-2272 Herschel T. Vinyard, Jr., Secretary Department of Environmental Protection Mail Station 35 3900 Commonwealth Boulevard Tallahassee, Florida 32399-3000 Matthew Z. Leopold, General Counsel Department of Environmental Protection Mail Station 35 3900 Commonwealth Boulevard Tallahassee, Florida 32399-3000 Lea Crandall, Agency Clerk Department of Environmental Protection Mail Station 35 3900 Commonwealth Boulevard Tallahassee, Florida 32399-3000
The Issue The issue in this case is whether the Florida Department of Environmental Protection (agency or DEP) should issue renewal permit No. SO36-26769E to Waste Management, Inc., of Florida (WMI) for the operation of an existing Class I landfill, the Gulf Coast Sanitary Landfill (GCSL) in Lee County, Florida. In the prehearing stipulation, Petitioners specifically dispute whether WMI has provided reasonable assurances: (1) regarding control of off-site odors emanating from the landfill, (2) that it has an approved closure plan, and (3) that leachate from the landfill will not pollute the air and water.
Findings Of Fact The Parties The applicant, WMI, provides waste management services in the state of Florida. These activities include the hauling, transfer, and recycling of solid waste, as well as the construction and operation of landfills. WMI operates GCSL, the facility that is the subject of the permit application, in Lee County, Florida. WCI is a Delaware limited partnership engaged in the business of developing multiple use communities in Southwest Florida. It owns or holds options to purchase lands adjacent to or near GCSL. WCI is also the developer of a planned unit development known as Gateway, which includes residential and commercial properties in close proximity to the landfill. George Sanders owns, personally or as trustee, lands adjacent to or near GCSL. Lee County is a political subdivision of the state with statutory responsibility to plan for and provide efficient, environmentally acceptable solid waste management. Lee County has contracted with WMI to provide solid waste disposal services to citizens of Lee County at GCSL. DEP is the agency of the state with statutory responsibility to regulate and permit landfills such as GCSL. As stipulated, the Petitioners and Intervenor have standing in this proceeding. The Landfill Facility The GCSL is a Class I landfill located at 11990 State Road 82, East, in Lee County, Florida, east of Interstate I-75. The landfill is in a remote, undeveloped area and has been in operation for over 20 years. The Gateway development is south of the landfill. The GCSL includes three parcels of land that have been used for the disposal of solid waste. Parcel 1 and Parcel 2, each about 40 acres, are unlined Class I landfills that have been closed and no longer receive any solid waste. Neither liners nor leachate collection were required when these parcels were constructed and operated. Parcel 3 is a lined Class I landfill that is approximately 80 acres in size. Approximately 50 acres of Parcel 3 are closed and have received final cover. Approximately 30 acres still are used for the disposal of solid waste. Parcel 3 was constructed in phases. In 1984, the Department issued a permit authorizing the construction of the "east hill" and "west hill"--i.e., two separate disposal areas in Parcel 3 where solid waste was placed above grade. In 1989, the Department issued a permit authorizing the construction of the "valley fill"--i.e., a disposal area where solid waste was used to fill in the valley between the east hill and the west hill. Parcel 3 now consists of a single mound of solid waste. As each phase of Parcel 3 was developed, liners and leachate collection systems were installed in Parcel 3 before the commencement of solid waste disposal operations. The liners and leachate collection systems met or exceeded all of the applicable regulatory requirements that were in effect at the time when the waste disposal areas were permitted. Parcel 3 is a well-designed, well-constructed, and well-operated landfill. William Krumbholz is in charge of landfill compliance and enforcement at DEP's district in Ft. Myers. He reports that the GCSL has an "exceptional operation record," and the GCSL is the "best operated Class I landfill" in the district. The GCSL currently is subject to a DEP operation permit (DEP file number S036-180572), as modified. On March 21, 1995, WMI filed an application for a renewal of its operation permit. On or about September 25, 1996, DEP issued its notice of intent to issue the permit to WMI. If issued, the permit would allow WMI to operate the GCSL for an additional five years. See Rule 62-701.330(2), Florida Administrative Code. The landfill is not yet at design capacity and is not expected to reach that capacity during the next five years. WMI desires to renew the operation permit for the GCSL because WMI wishes to continue to provide solid waste management services to Lee County, consistent with WMI's contractual agreement to do so. WMI also wishes to continue operating the GCSL in order to construct Parcel 3 to its final design grades for closure. The design grades will maximize the site's ability to shed stormwater and thus minimize the production of leachate. Continuing to build Parcel 3 to its design grades is environmentally preferable to closing Parcel 3 at this time in its present configuration. Prior to 1994, the GCSL received approximately 1000 tons of municipal solid waste each day. Approximately 90 per cent of the solid waste was household garbage and about 10 per cent was construction and demolition (C&D) debris. The GCSL did not receive industrial waste. The composition of the waste stream changed in August 1994, when Lee County began to operate a waste-to-energy facility. All of the household garbage generated in the incorporated and unincorporated areas of Lee County is taken to the Lee County waste-to-energy facility, where it is burned, and the ash residue is taken to the GCSL. Currently, the GCSL receives only about 450 tons per day of solid waste, which consists of 65-70 per cent ash residue from the waste-to-energy facility, 30-35 per cent C&D debris, and approximately 2-5 per cent municipal solid waste. DEP would allow WMI to accept more solid waste at the GCSL. However, Lee County has the contractual right with WMI to dictate the types of materials deposited in the GCSL, and it is the county's intent to use the waste-to-energy facility, not the GCSL, for the disposal of putrescible wastes. Lee County is contractually obligated to send all of the county's municipal solid waste to the county's waste-to-energy facility, and the county has a financial incentive to do so. Lee County will send municipal solid waste to the GCSL only if an emergency occurs, but even then the county will try to limit the duration and extent of the County's use of the GCSL. Objectionable Odors Objectionable odors at a landfill typically are related to the facility's operating practices (e.g., the size of the working face) and the presence of putrescible, organic materials that degrade and produce gases when they come in contact with water. In this case, the GCSL's operating practices minimize odors. The majority of the waste now received at the GCSL is ash residue, which contains little or no organic material and thus produces little or no odor. In addition, because the GCSL is a "particularly dry landfill," any putrescible waste is not likely to degrade and cause odors. There have been no violations of the DEP odor rules at the GCSL since 1991 and only two instances, in 1987 and 1991, when off-site odors were verified by DEP's inspector. WCI filed odor complaints in 1995, but the complaints were investigated by DEP and the county and found to be invalid. Petitioners presented no evidence of present or anticipated future odor problems at the GCSL. To the contrary, the DEP inspectors and other witnesses established that there are no objectionable odors at the property boundary of the GCSL. WMI's Approved Closure Plan WMI has a closure plan for the GCSL that was approved by DEP when DEP issued the existing operation permit. In the current application WMI asked DEP for authorization to close the remaining portions of Parcel 3 in the same manner that WMI used when closing the other areas at the GCSL. If WMI's request is not granted, WMI may be required to close Parcel 3 with a geomembrane cover or "cap," in accordance with DEP's new requirements for final closure plans. Although DEP's landfill engineer recommends approval of WMI's request for authorization to use an alternate cover material, no proposed agency action has been taken on that request, and DEP will provide notice and a new point of entry for affected persons when the agency decides whether to grant WMI's request. It is, therefore, inappropriate to address the merits of WMI's "alternate procedure" request in this hearing. As provided in Rule 62-701.310(3), Florida Administrative Code, the agency's decision is action subject to a separate Section 120.57, Florida Statutes, proceeding. WMI's closure plan for the GCSL has little significance in this proceeding. The closure plan is used to calculate the cost of closure, which in turn is used to determine whether WMI has the financial resources to pay the cost of closing the landfill. As part of its approved closure plan, WMI previously demonstrated that it has the financial ability to pay the cost of closing the landfill. WMI could be required to spend an additional $1,000,000 to close the GCSL if WMI's request for approval of the alternate procedure is denied by DEP, but it is undisputed that WMI has the ability to pay this additional cost for closure. WMI must submit a revised closure plan at the time when WMI is prepared to close Parcel 3. DEP then will determine again whether the closure plan for Parcel 3 is adequate and in compliance with the DEP standards in effect at the time. (See paragraphs 38-42, "Specific Conditions," appended to the Intent to Issue, WMI Exhibit 4) Leachate Generation Rate at the GCSL While evaluating WMI's request for approval of an alternate closure plan, DEP noted that the amount of leachate collected in Parcel 3 (i.e., approximately 900,000 gallons per year) is relatively low when compared to the amount of leachate generated at other landfills. DEP was concerned that the low leachate collection rate may indicate a problem in the leachate collection system, so DEP requested WMI to evaluate the leachate generation rate at the GCSL in more detail. WMI subsequently presented additional information to DEP. Leachate is defined by DEP as the liquid that has passed through or emerged from solid waste. Rule 62-701.200(50), Florida Administrative Code. Leachate is generated when rainwater falls on the landfill, sinks in, and percolates through the garbage. One of the primary factors reducing leachate at the GCSL is the use of ash as cover material. The ash, which contains lime, undergoes a reaction and "sets up like mortar." It is extremely hard, cannot be penetrated easily, and has a very low permeability. The permeability of the ash is in the same range as the permeability of the barrier layer that is used in a final cover material. The ash "sets up so well" that the surface water runoff is much greater than with a normal cover material. There is an additional, significant reason why Parcel 3 of the GCSL has a low leachate generation rate. Approximately 50 acres of Parcel 3 already have been closed with a final cover which is designed to shed rainwater and thus minimize the production of leachate. Since most or all of the remaining 30 acres of Parcel 3 have been covered with ash, virtually all of Parcel 3 is covered with low permeability materials that minimize leachate generation. Leachate in Parcel 3 also is minimized because WMI employs good operational practices to limit its generation. WMI uses a small working face and stormwater berms to reduce the size of the area where rainwater may infiltrate. WMI maintains aggressively graded slopes that quickly direct stormwater away from the working face and off of the landfill. WMI's "close-as- you-go" strategy means that the waste at the GCSL is covered before it becomes saturated with rainwater. Specific conditions in the Intent to Issue require that these practices continue. After DEP requested WMI to evaluate the leachate generation rate in Parcel 3, WMI hired a firm to clean the inside of all of the pipes in the leachate collection system in Parcel A television video camera was used to visually inspect the inside of all of the pipes. This work confirmed that "at least 99.9 per cent" of the leachate collection pipes are clean and functional. WMI promptly repaired the leachate collection pipes in two small areas where there was blockage due to a crushed riser and a valve that was left closed. It is highly unlikely that leachate is mounding up inside the landfill or overtopping the perimeter berm that surrounds Parcel 3. The leachate levels inside Parcel 3 generally are and historically have been less than two feet. The leachate levels at the GCSL do not threaten the liner's integrity. The pipes are working, and no seepage has been observed through the side slopes. WMI verified that the liner and leachate collection systems in Parcel 3 were constructed properly and in accordance with the DEP-approved design. Construction Quality Assurance reports were prepared by professional engineers when the liner systems were installed in Parcel 3. In these reports, the engineers certified that each section of the liner was installed, inspected, and tested appropriately to ensure that there are no holes in the liner. Where necessary due to failed tests, the reports reflect that repairs were made before any waste was deposited. The HELP Model In response to DEP's questions about the leachate generation rate at the GCSL, WMI's staff attempted to calculate the rate by using a computer program referred to as the HELP model. WMI initially ran the model with default input values which produced a predicted rate of 7.5 million gallons per year (MGY). WMI questioned the validity of the model results, but submitted the results to DEP because it was the best data then available. Given the discrepancy between the model results and the actual field data, WMI hired a nationally recognized consulting firm, Post, Buckley, Shuh, and Jernigan (Post Buckley), to perform a more refined analysis using the HELP model. The HELP model is used to calculate water balances at landfills. The model calculates the amount of water that will move across, into, and through landfills under different conditions. The model is a useful tool for comparing the performance of two alternate landfill designs, but it has limited value when used to predict the actual performance of an operating landfill. The model can be run with default values or with site- specific information. However, the model is designed to be conservative and overpredict the actual leachate generated. In its application of the model, Post Buckley adjusted several input parameters to reflect the actual conditions at the GCSL. Most significantly, Post Buckley adjusted the input parameters for the moisture content of the waste in the GCSL and for the U.S. Soil Conservation Service's (SCS) Curve Number. These adjustments were "reasonable and well-considered." The HELP model assumes that the solid waste in the landfill is at field capacity--i.e., saturated with rainwater. However, it is well established that the solid waste in landfills is not saturated. At the GCSL, the ash cover material and WMI's "close-as-you-go" practices would reduce the likelihood that the waste would be saturated. Indeed, Post Buckley's on-site inspections revealed that the GCSL is a "particularly dry landfill." The users' manual for the HELP model indicates that the Curve Number should be adjusted in certain cases to account for increased stormwater runoff that will occur during short duration, high intensity storms. The default value is used in areas where the rainfall occurs over a 24-hour period. In this case, Post Buckley concluded that the SCS Curve Number should be adjusted because the GCSL receives about 54 inches of rainfall annually during approximately 90 short duration, high intensity storms. Accordingly, Post Buckley adjusted the model's input parameters to increase runoff by 23 per cent of precipitation. Post Buckley's adjustment to the Curve Number and runoff value is consistent with the findings contained in a report by Benson and Pliska, which in the opinion of WMI's expert is the best study performed to-date on the calibration of the HELP model and which is similar or equivalent to the Peyton and Shroeder calibration relied on by Petitioner's expert. Post Buckley ran the HELP model with three different sets of conditions. In one run, Post Buckley adjusted the input parameter for the moisture content of the waste and calculated an leachate generation rate of 100,000 gallons per year. In the second run, Post Buckley adjusted the Curve Number and calculated a rate of 1.3 MGY. In the third run, Post Buckley adjusted both the Curve Number and the moisture content and calculated a rate of zero gallons per year. Given Post Buckley's landfill experience and its knowledge about the operational practices at the GCSL, the ash used as cover material, the climatological conditions in southwest Florida, and the limitations of the HELP model, Post Buckley concluded that 1.3 MGY is a reasonable estimate or approximation of the actual leachate generation rule for Parcel 3 of the GCSL. The leachate generation rate for the GCSL also has been evaluated by other witnesses. Mr. Joe Fluet calculated that approximately 960,000 gallons to 1,030,000 gallons of leachate are generated annually in Parcel 3. Mr. Fluet is a nationally recognized landfill expert who was selected by DEP to serve as the chairman of a technical advisory group that helped DEP develop the current DEP landfill rules. Mr. Fluet's conclusion is consistent with the leachate collection data for the GCSL, the Post Buckley analysis, the measurements of leachate in the sumps at the landfill, and his own personal observations of the landfill and WMI's operational practices. It is unlikely that leachate generation in Parcel 3 is as high as 2.0 MGY. This rate would produce about three feet of leachate on the liner. WMI's field data show that the "head" (depth) of leachate over the liner in Parcel 3 generally is less than two feet. By comparison, Post Buckley's estimated rate of 1.3 MGY would produce about 1.8 to 2.5 feet of leachate over the liner, which is more consistent with WMI's field data. Petitioners also attempted to calculate leachate generation for Parcel 3 by running the HELP model. Using default values, Petitioners calculated a rate of approximately 7 MGY. Petitioners also ran the model after adjusting several input parameters. Among other things, Petitioners decreased the slope from 20 per cent to 4 per cent, and Petitioners increased runoff by 30 per cent, as compared to the default value. With these adjustments, Petitioners calculated a rate of 4.2 MGY. The various experts' calculations with the HELP model produced leachate generation rates of 0 to 7.5 MGY. The magnitude of the range reflects the limitations of the model and underscores the need for sound professional judgment when adjusting the input parameters. In this case, the most persuasive and credible testimony was presented by Mr. Bonaparte, a recognized landfill expert who is assisting EPA with its efforts to calibrate the HELP model, and Mr. Fluet. Consistent with their testimony, the greater weight of the evidence indicates that the leachate generation rate for Parcel 3 of the GCSL is most likely to range between 960,000 gallons and 1.3 MGY. The Petitioners' calculated range of 4.2 to 7.0 MGY is not credible. Even the low end of Petitioners' range is more than twice as much (2.0 MGY) estimated by any other witness. In addition, Petitioners' entire range of calculated leachate generation rates is inconsistent with the other evidence of record, as described below. Petitioners' leachate generation calculations were prepared by Marcus Pugh, who has not visited the GCSL nor performed any site specific field work concerning the GCSL. Mr. Pugh had never used the HELP model before to predict the generation rate of an operating landfill, but rather has used it as others commonly do, to size and design facilities. Although Mr. Pugh initially criticized Post Buckley's calculation of the slopes at the GCSL, he subsequently conceded that the HELP model results obtained by Post Buckley are independent of slopes. Missing Leachate? Based on their HELP model calculations that Parcel 3 actually is generating 4.2 to 7.0 MGY of leachate and since WMI is collecting 900,000 gallons per year, Petitioners speculate that there is "unaccounted for" or "missing" leachate (i.e., 3.3 to 6.1 MGY), which must be leaking through the GCSL's liner or seeping out of the sides of the GCSL, or both. Petitioners' allegations, however, are not supported by the evidence of record, which favors a finding that the facility is simply not generating the vast amounts of leachate predicted by Petitioners. The liner and leachate collection systems under Parcel 3 were "state-of-the-art" and in full compliance with all of the applicable DEP rules at the time of their installation. These systems were installed properly, in accordance with standard quality assurance procedures, as certified by a professional engineer. Mr. Bill Krumbholz, the DEP inspector, personally witnessed the installation of portions of the liner. Mr. Fluet also was personally involved with the certification for the landfill. Even the Petitioners' witness, Mr. Pugh, conceded that he had no concerns about or disagreements with the certifications for Parcel 3. Thus, there is no reason to believe that the liner or leachate collection systems were damaged at the time when they were installed. Petitioners theorize that the liner in the GCSL may have been damaged after it was installed, but Mr. Pugh readily admits that this contention is based on "pure speculation" based on the notion that a minimum wage laborer on heavy equipment might damage the liner. Petitioners presented no direct or credible evidence to support their contention. After the completion of construction and the commencement of operations large scale breaches of a landfill liner are not a common or even occasional occurrence. As part of its standard management practices, WMI places a four-to six-foot thick "fluff" layer of select household garbage over any new landfill liner system. The fluff layer is used to protect the liner and ensure that the liner is not accidentally damaged. This WMI policy was followed when the liners were installed in Parcel 3 of the GCSL. As a result, there is no reason to believe that the liner in Parcel 3 was damaged after installation. There is no circumstantial evidence to support Petitioners' claims. Since 1976, WMI has monitored the water quality at the GCSL in accordance with a DEP-approved ground water monitoring plan, which is designed to detect any significant leakage from the landfill. No groundwater quality violations have been recorded at the GCSL. However, if one were to assume that Petitioners' theory is correct, then one also would have to assume that over the last five years approximately 16.5 to 30.5 million gallons of leachate have leaked through the liner in Parcel 3 and entered the adjacent groundwater, but somehow have evaded detection in the monitoring wells. Respondents' witness Mr. Fluet calculated that a maximum of 56,000 gallons per year of leachate might possibly leak through the liner system in Parcel 3. His calculation conservatively assumed that there may be as many as ten 0.1 cm2 holes in each acre of the liner in Parcel 3. Petitioners have offered no credible theory that would produce a leakage rate of several million gallons per year. To create a leakage rate of even one million gallons per year, there would have to be at least ten and perhaps dozens of large holes in the liner. Each of the holes would need to be 10-feet long and several inches wide. However, large holes or breaches in a liner system normally are identified and repaired during the installation and quality assurance process. There is no evidence of poor quality assurance or poor operational practices at the GCSL to support Petitioners' speculation. WMI witness, Rudolph Bonaparte, has never encountered a situation where there was evidence of the kinds of "major flaws" that would be necessary to generate the leakage rates hypothesized by Petitioners. Mr. Fluet also was unable to identify any plausible scenario that would support Petitioners' theory. Petitioners' witness, Mr. Pugh, conceded that he has never worked on a lined landfill where 4-to 7-MGY of leachate leaked through the liner. Petitioners questioned whether settlement would affect the liner or leachate collection systems in Parcel 3. Since ash is denser than MSW, the disposal of ash in the GCSL may affect the settlement of the subsurface soils to some extent, but there will be no shearing or failure of the liner due to any differential settlement. The amount of differential settlement that may occur would be extremely small. Settlement could create a 1000 gallon "puddle" of leachate in the valley fill portion of Parcel 3, or the slope in some portions of the leachate collection system may flatten, but these are relatively minor impacts. Conversely, increased settlement in the base of Parcel 3 would help improve the overall drainage of the east hill and the west hill areas. Petitioners contend that the "unaccounted for" leachate may be escaping from the GCSL through side slope seepage, but this theory is not supported by any direct or credible evidence. It was undisputed that any significant amount of side slope seepage from a landfill is readily apparent. Leachate seeps typically "look ugly and smell bad." When seeps occur, the soil is discolored, the vegetation is killed, and there is sheering, gullying, rilling, and other signs of erosion. There has been no side slope seepage from Parcel 3, as established by numerous site visits and personal observations of the DEP staff, county representatives, and other witnesses. Petitioners' witnesses have not observed any side slope seepage at the GCSL. Although Petitioners noted that there are discolored areas on Parcel 3, those are the areas where WMI recently excavated into the sides of the GCSL to complete the repairs to the leachate collection system. The leachate would have to mound up inside the landfill before there would be the amount of seepage predicted by Petitioners. This mounding would create tremendous head pressure in the cleanout pipes. However, no such pressure has been found in the cleanout pipes at the GCSL. Petitioners suggest that leachate may be seeping from the toe of Parcel 3 into the drainage ditch that leads to the stormwater retention pond. Again, the evidence does not support this hypothesis. The liner in Parcel 3 goes over the top of a berm which is built completely around the perimeter of Parcel 3. The berm and the liner rise 3 feet above the base of the leachate collection system. Leachate could not seep from the toe of Parcel 3 unless the leachate level rose above the functioning leachate collection pipes, avoided being drained away by the leachate collection system, and then flowed uphill over the berm. Even if the leachate went up and over the berm, the leachate would enter the ditch from the top of the berm, where it would be readily visible to site inspectors as side slope seepage. No such seepage has been observed at the GCSL, even when people were looking for it. Ground Water Monitoring at GCSL There are three aquifers underlying the GCSL: (a) the surficial water table aquifer; (b) a sandstone aquifer; and (c) the Hawthorne formation. Each of the aquifers is separated by a low-permeability, confining layer of varying thickness. The confining layer below the surficial water table aquifer is between 40 and 80 feet in thickness. Based on field data and reports of other scientists, including Petitioner's expert, Thomas Missimer, hydrogeologist Martin Sara derived a vertical flow rate of approximately 0.1 feet per year. At this rate, ground water would take approximately 40 to 50 years to move vertically downward through the confining layer. Petitioners contend that the GCSL is affecting the surficial water table aquifer. The surficial water table aquifer contains fresh water and is used extensively as a source of potable water in Lee County, but not in the area of the GCSL. Ground water samples collected from the surficial water table aquifer on Petitioners' property had average total dissolved solids (TDS) concentrations of approximately 500 mg/l. Similar TDS values have been reported for the surficial water table aquifer in the area surrounding the GCSL. In general, the regional groundwater flow in the vicinity of the GCSL is to the northwest. There is a northwesterly flow from WCI's property onto the GCSL that is consistent year after year and during all seasons. Extensive historical monitoring data for the site confirm that the ground- water flow under the GCSL also primarily is to the northwest, but with some likely localized flow to the west, at least during special events such as landfill dewatering in 1982. The only significant exception to this trend occurs in the area of the stormwater retention pond, where the groundwater usually flows radially outward in all directions. Groundwater monitoring began at the GCSL in 1976, when the facility opened. The groundwater monitoring system at the GCSL has complied with or exceeded the DEP requirements at all times since 1976. Currently there are seven groundwater monitoring wells, each approximately 30-feet deep, in the surficial water table aquifer at the GCSL. These wells surround the perimeter of the GCSL. At the final hearing, Lee County attempted to address concerns about the groundwater monitoring program for the GCSL by agreeing to pay for the redevelopment and installation of additional groundwater monitoring wells. Lee County and WMI stipulated that two existing groundwater monitoring wells (wells 14-S and 18-S) will be redeveloped and a new ground water monitoring well will be installed in the surficial aquifer between existing wells 20-S and 21-S. The two redeveloped wells and the new well will be sampled on a semiannual basis for chloride and the field parameters of pH, specific conductivity, field turbidity, and temperature for the life of the permit. The monitoring may be discontinued if the GCSL closes. The monitoring well network at the GCSL is adequate to monitor the type of area-wide plume that might originate from the GCSL. The evidence demonstrates that any holes in the liner in Parcel 3 are likely to be small and spread widely across the entire site. Although the plume from a single hole may be narrow and elongated, the plume from the entire landfill would be approximately 2400-feet wide. Under most if not all plausible scenarios, leachate leaking out of the liner beneath Parcel 3 will move with the regional groundwater flow toward the monitoring wells located along the western and northern perimeters of Parcel 3. Potential leakage from Parcel 3 will be pushed toward these monitoring wells by the regional groundwater flow and the radial flow from the retention pond. DEP has concluded and the evidence confirms that WMI's groundwater monitoring plan, as modified by Lee County's stipulation, is protective of the environment and satisfies all applicable DEP requirements. Under the facts of this case, it is not necessary to add any additional monitoring wells or otherwise modify the groundwater monitoring plan, except as stipulated by Lee County. It was undisputed that the leachate generated at the GCSL is and always has been "very weak" in comparison to the leachate from other landfills. The leachate contains relatively few contaminants and has low contaminant concentrations. The GCSL's leachate has few volatile or hazardous constituents. It also was undisputed that there have been no violations of DEP groundwater standards detected in any of the groundwater monitoring wells at the GCSL. There have been one- time exceedances or anomalies, but such events do not constitute a violation of the DEP standards. Chloride In the Ground Water Chloride is present in the GCSL's leachate. Over the last ten years, the average chloride concentration in the leachate has been 1021 parts per million (ppm), and the highest concentration has been 2070 ppm. The Department has no primary (i.e., health-based) groundwater quality standard for chloride. The only groundwater quality standard for chloride is a secondary standard of 250 ppm. Secondary standards are intended to address concerns about odor, taste, and aesthetics. If chloride concentrations become too high in drinking water, people simply stop drinking the water before there are any health implications, because the water is too salty. WMI evaluated Petitioners' claim that chloride leaking from Parcel 3 may affect the water quality on Petitioners' property. First, WMI performed a mass balance calculation and concluded that the maximum rate of leakage from Parcel 3 would increase the chloride concentrations beneath the landfill by only 7 to 14 ppm. WMI then used a dispersion model and determined that the maximum leakage rate would increase the chloride concentrations in the groundwater only 3.5 ppm at a distance of 100 feet from the landfill. This increase in chloride could not be distinguished from the existing background concentrations in the groundwater. WMI also analyzed the groundwater data to determine whether the GCSL is causing an increase in the chloride concentration measured in monitoring well 21-S. WMI plotted the data on trilinear diagrams, consistent with techniques that have been commonly used by hydrogeologists for many years. The trilinear diagrams clearly show that the increased levels of chloride in monitoring well 21-S are not caused by the leachate from the GCSL. The trilinear diagrams do not identify the source of the chloride found in monitoring well 21-S. However, it appears that the chloride originated from a source of "brackish" water. There are several potential sources of the chloride in well 21-S. In the past, there was an irrigation well on WCI's property that pumped water with high chloride concentrations and created a large plume of chloride-enriched groundwater on WCI's property. Historic groundwater monitoring data indicate that the chloride plume was approximately 6000-feet wide and flowing towards the GCSL. This large plume may have reached the GCSL and affected the water quality in well 21-S. There also were irrigation wells located on the site of the GCSL that may have contributed to the chloride concentrations in well 21-S. Historic water quality data indicate that these irrigation wells produced elevated chloride concentrations in the groundwater at the GCSL. Petitioners' Stormwater Data On May 12, 1997, Petitioners collected samples of the water in the stormwater retention pond at the GCSL. Petitioners also collected a sample of the water in a concrete culvert that carries stormwater runoff from Parcel 3 to the retention pond. The samples were collected during a severe rainstorm when it was "raining cats and dogs." Based on these samples, Petitioners speculate that the "unaccounted for" leachate is entering the stormwater retention pond via a perimeter drainage ditch and the concrete culvert. This speculation is not supported by the evidence. Leachate generated in the GCSL has an ammonia-nitrogen concentration in the range of 700 to 800 ppm. The stormwater collected from the culvert pipe had an ammonia-nitrogen concentration of 1.7 ppm. The disparity between these two values belies the possibility that the stormwater in the ditch contains leachate from the GCSL. Although Petitioners contend that ammonia-nitrogen in the leachate could be oxidized while flowing in the ditch, it would be virtually impossible for the oxidation of stormwater in the ditch to reduce ammonia-nitrogen levels from 700 or 800 to 1.7 ppm. WMI's extensive experience with leachate has demonstrated that it is "very difficult" to treat and reduce the ammonia-nitrogen levels in the leachate through volatization and aeration. The water collected by Petitioners in the culvert had a chloride concentration of 2900 ppm, which significantly exceeds the highest chloride level ever found in the GCSL's leachate (2070 ppm). The pH in Petitioners' sample (8.87) also was notably higher than the pH found in the landfill's leachate (e.g., 7.20 in WCI Exhibit 14). The disparity between the values found in Petitioners' sample and the values found in the landfill's leachate suggests that the Petitioners' sample is not representative of leachate from Parcel 3. Stormwater flowing over the ash residue on the top of Parcel 3 is the most probable source of the elevated chloride and high pH found in Petitioners' sample. The ash at the GCSL has elevated chloride concentrations. It also has high pH, due to the addition of lime at the waste-to-energy facility. Both WMI's witness, Mr. DeBattista, and Petitioner's witness, Dr. Missimer, saw stormwater washing over the ash and entering the stormwater conveyance system that led to the culvert where Petitioners' sample was collected while Petitioners were at the GCSL collecting samples. Petitioners noted that the water in the stormwater ditch was discolored. However, Petitioners' photograph of the site (WCI Ex. 10) reveals that the water in the ditch is the same color as the mulch (compost) that is stockpiled on Parcel 3 and used for intermediate cover. During Petitioners' site visit, stormwater was flowing over the mulch on Parcel 3 before entering the stormwater ditch. Dr. Missimer conceded that the color of the water in the ditch could be caused in part by the mulch and stormwater runoff. Dr. Missimer raised a number of other issues about the GCSL. He claimed that the sediments in the stormwater retention pond have elevated metals concentrations, but he does not contend that the metals concentrations in the sediments violate any applicable DEP standard. He also does not contend that the metals are leaving the site. Dr. Missimer noted that there was "foam" in a stormwater ditch. However, Petitioners presented no competent evidence about the source of the foam or its chemical composition. Finally, Dr. Missimer heard gas escaping from a cleanout pipe at a different location on the landfill, but there were no odors associated with it. There is no evidence to demonstrate that gas in the riser pipes is a cause for concern. In response to Petitioners' chloride data, WMI is taking steps to manage its stormwater better. WMI has placed intermediate cover over 10 acres of exposed ash, thus reducing the potential for the rainwater to come in contact with the ash and convey chloride into the stormwater management system. WMI also is determining whether it should remove a culvert that served as a conduit for the runoff from Parcel 3 to the retention pond. It was undisputed that the GCSL is an "existing installation," as that term is defined by DEP. Parcels 1 and 2 of the GCSL were unlined and were reasonably expected to release contaminants into the ground water on or before July 1, 1982. The GCSL has operated consistently with the applicable DEP statutes and rules relating to groundwater discharges in effect during the time of its operation. Since the GCSL is an existing installation, WMI is entitled to a zone of discharge that extends to WMI's property boundary. The groundwater within the zone of discharge is not required to meet the DEP water quality standards. Modifications to Conditions of Draft Permit and Summary of Findings In addition to the modification to the ground water monitoring plan described in paragraph 59 above, WMI has requested and DEP has agreed to make minor changes to the language in Specific Conditions 10, 19, 32, 38, and 45(e) of the draft permit. These changes relate respectively to gas monitoring, daily cover, acceptance of C & D debris, data to support the alternate procedure request for final cover, and the zone of discharge. These modifications are reasonable, supported by the evidence, and consistent with DEP rules. Moreover, WMI has provided reasonable assurance of compliance with all applicable DEP rules for continued operation of the GCSL. As amply demonstrated in this proceeding, highly competent professionals can disagree. Petitioners' witness Dr. Missimer, has had years of experience in studying the hydrogeology of Lee County and the area of the landfill and Gateway. His data collected during the development of Regional Impact Studies for Gateway have been relied on by DEP and others. His conclusions, however, regarding enormous amounts of leachate escaping the landfill are simply not supported by the results of years of monitoring the landfill's operations. With continued monitoring, the applicant should be permitted to continue to operate.
Recommendation Based on the foregoing, it is hereby RECOMMENDED: That the Department of Environmental Protection enter a Final Order approving Waste Management, Inc., of Florida's application for a permit renewal to continue to operate the Gulf Coast Sanitary Landfill, subject to the parties' stipulation regarding additional groundwater monitoring wells and subject to the revisions to the draft permit that are described herein. DONE AND ENTERED this 17th day of September, 1997, in Tallahassee, Leon County, Florida. MARY CLARK Administrative Law Judge Division of Administrative Hearings The DeSoto Building 1230 Apalachee Parkway Tallahassee, Florida 32399-3060 (904) 488-9675 SUNCOM 278-9675 Fax Filing (904) 921-6847 Filed with the Clerk of the Division of Administrative Hearings this 17th day of September, 1997. COPIES FURNISHED: W. Douglas Beason, Esquire Department of Environmental Protection Mail Station 35 3900 Commonwealth Boulevard Tallahassee, Florida 32399-3000 William D. Preston, Esquire Michael P. Petrovich, Esquire Post Office Box 6526 Tallahassee, Florida 32314-6526 Neale Montgomery, Esquire Pavese Garner Haverfield Dalton Harrison & Jensen Post Office Box 1507 Fort Myers, Florida 33902-1507 David S. Dee, Esquire John T. LaVia, III, Esquire Landers & Parsons, P.A. 310 West College Avenue Tallahassee, Florida 32301 David M. Owen, Esquire Lee County Assistant Attorney Post Office Box 398 Fort Myers, Florida 33902 Kathy Carter, Agency Clerk Department of Environmental Protection Mail Station 35 3900 Commonwealth Boulevard Tallahassee, Florida 32399-3000 Perry Odom, General Counsel Department of Environmental Protection Mail Station 35 3900 Commonwealth Boulevard Tallahassee, Florida 32399-3000
Findings Of Fact On February 1, 1977, DER issued an operation permit to Respondent Hillsborough County for the operation of a solid waste disposal facility (sanitary landfill) with an area of 42 acres, located at Taylor Road and Sligh Avenue in the northeast portion of Hillsborough County. The permit was effective for a period of two years and contained various conditions which required the permittee to abide by applicable rules of the DER. The conditions also specified that water samples from monitoring wells and from any waters discharged from the site should be taken and analyzed to determine water quality and such analysis submitted to the Hillsborough County Environmental Protection Commission (HCEPC) acting as the agent for DER within Hillsborough County. The conditions further prohibited open burning at the site without prior approval, control of any objectionable odors, provision for sufficient equipment, and controlled access to the site. (Exhibit 22) In December 1978, Hillsborough County applied for renewal of its operation permit until February 1, 1980. The application and accompanying letter showed that the county wished to operate the site as a "high rise land fill" due to the fact that dirt accumulated from trench excavation had raised the ground level approximately ten feet. In July, 1979, after submission of requested additional information to DER during the preceding months, the county director of solid wastes submitted closeout plans for the landfill to DER and advised that they were filing a permit application for a new landfill to the east of the current site, utilizing a borrow pit area which had been transferred to the county by the State Department of Transportation. Thereafter, by letter of October 23, 1979, the Hillsborough County Administrator requested that DER consider the previous application for renewal of its operating permit to be withdrawn and that the application be viewed as one for a temporary operating permit. (Exhibit 1) During the month of August 1979, several inspections of the existing landfill were made by DER, HCEPC, and Regional EPA personnel. A series of memos prepared by the agency personnel reflected that various violations of DER rules governing landfills had been found during the course of the inspections. These included uncontrolled ponding of water in low areas on the site, failure to control the runoff of surface water, lack of adequate control to prevent unauthorized access to the site, failure to provide the requisite six inches of daily cover over the compacted waste, lack of proper ground water monitoring, and destruction of several wells by heavy equipment, and frequent breakdown of equipment used at the site. Residents living nearby or adjacent to the landfill have observed ponding, uncontrolled runoff, and unauthorized personnel on the site. They have experienced a high incidence of rats, birds and flies on their property and have seen septic tank waste trucks at the landfill. They further have noted uncovered garbage and have seen waste flow from the landfill into the area of Interstate Highway 4 which borders the south portion of the site. The State Department of Transportation has also made complaints to the county concerning dirt and debris on the interstate right-of-way. In a letter to DER, dated October 2, 1979, the county director of public utilities and safety responded to the various complaints and alleged violations. He acknowledged the validity of a number of the problems and indicated the corrective action that had or would be taken to prevent recurrence. (Testimony of Brantner, Warner, Smoot, Exhibit 8, supplemented Exhibits 10-15, 20, 23) By letter of October 23, 1979, DER's Southwest District manager issued Notice of Intent to issue a temporary operation permit for the high-rise landfill pursuant to Section 403.087, Florida Statutes, and Sections 17-4.07, Florida Administrative Code, with an expiration date of February 1, 1980. The stated reasons for the proposed issuance of the permit were because the facility did not qualify for an operation permit, but the applicant was making bona fide efforts to provide an acceptable alternate waste disposal system, and that the permit would allow time to establish a five-year monitoring program to ensure that the site had stabilized and was not a significant water pollution source. Conditions attached to the proposed permit were such as to reasonably preclude the recurrence of past violations with regard to daily cover, controlling access to the site, establishment of a gas monitoring program, and installation of additional monitoring wells for periodic sampling as to water quality. A compliance schedule was stated which required the submission of plans to accomplish the requirements of the permit and such schedule called for the cessation of all filling operations by February 1, 1980 and commencement of the closeout operation on March 1, 1980. The petitions for hearing herein were thereafter filed with DER and referred to this Division on November 15, 1979. (Exhibit 3) In December, 19.79, DER received notification from the regional office of the United States Environmental Protection Agency that volatile organic analysis on well supply samples from private residences in the vicinity of the landfill indicated a potential health risk and that the agency had therefore advised the well owners not to drink the water. Inspections of the landfill in mid-January 1980 by DER and HCEPC personnel showed that solid waste was not being adequately covered on a daily basis and that ponding of water in various areas was observed. The county attributed the ponding to heavy rainfall during the period, but claimed that the waste had been covered on a daily basis although the heavy equipment had scattered paper and other debris through the cover soil in view of the sticky nature of the clayey soil. (Exhibits 6, 16-18) After Hillsborough County officials became aware of the EPA well tests, a private consulting firm of ground water hydrologists and geologists was employed by the county to undertake a water quality analysis of the round water in and around the landfill. The program commenced in late December 1979, and a preliminary assessment of ground water quality was submitted in February 1980. Water samples were taken from private wells adjoining the landfill and from a well within the landfill itself. Analysis of the samples led to preliminary conclusions that organic and inorganic constituents of samples from within the landfill correlated well with those wells adjacent to the landfill, thereby suggesting landfill leachate as a source of contaminants. However, the consultants are of the opinion that several wells which exhibited traces of organic but no discernible inorganic contaminants may be affected by sources of contamination not related to landfill leachate, such as petroleum products, septic tank cleaners, and other household products. It was found that inadequate regional and site specific hydrogeologic data was available upon which to base a complete statistical analysis. It was further found that the wells used in the study were "uncontrolled" and therefore did not represent a valid basis for determining the origin of their contamination. Further study is planned which will involve testing of samples from twenty new monitoring wells designed to determine the rate of movement and attenuation of leachate. The results of such study will be available within five or six months. Although it is generally agreed that ground water flows in a southwesterly direction at the site, more information is required to ascertain the precise direction of flow. At the present time surface water falling on the landfill flows toward a county owned borrow pit to the southwest of the landfill. (Testimony of Schreuder, Becker, Bush, Exhibits 7, 19) The closing plans for the landfill site provide for surface water to be channeled away from the area and directed through swales to travel in the natural direction to the west. A final two-foot cover of soil will be place over completed cells and a three and one-half foot cover of compacted soil will be placed on side slopes of the landfill. Such final cover and grading of the area is designed to preclude infiltration of surface water. Trees will be planted around the periphery of the area and trenches will be dug to force any gases upward to a high point where an exhaust will be placed. Soil borings show that there is an extensive layer of clay at the bottom of the landfill but the permeability of this material is unknown. The solid waste cells are at a maximum of 40 feet below the ground surface and the average height of the compacted waste above ground surface is approximately 28 feet. The county permanently ceased accepting solid waste at the landfill on February 11, 1980, and has commenced closing operation to a minimal degree. As a result of the fact that solid waste is no longer being accepted, the intended elevation to be reached in the southern portion of the site will not take place and accordingly the closing plan will have to be revised in that respect. It is estimated that closing will take approximately one year to accomplish. Upon final closing with vegetative cover and proper grading, it is anticipated that pending and vector problems will be resolved. At the present time, inadequate fencing exists around the boundaries of the landfill. (Testimony of Bush, Becker, Exhibits 2- 21) In recognition of the fact that Hillsborough County ceased using the landfill for disposal of solid waste, the county and DER entered into a written stipulation, dated February 25, 1980, confirming this fact and revising special conditions to the proposed temporary operating permit. These conditions included a proviso that the proposed permit would expire three years from the date of issuance to permit a long-term monitoring and surveillance program to be conducted until the site has stabilized and is not a significant water pollution source. The conditions also call for the county to establish an acceptable program for monitoring gases at different points within the landfill, to control access to the site, and to complete the study to determine the extent and source of any infiltration of foreign substances into the ground water from the site. In addition, the conditions would require the county to submit an acceptable plan for long-term monitoring of ground water, including the installation of additional monitoring wells if required. It also provides that the final closeout of the site shall be completed within one year from the date of the final order and that such closeout shall be completed in accordance with applicable law and in accordance with previous closeout plans to the extent made possible by final elevations. (Exhibit 4)
Recommendation That the applicant Hillsborough County be issued a temporary operating permit for the closing of the landfill specified in the application. DONE and ENTERED this 26th day of March, 1980, in Tallahassee, Florida. THOMAS C. OLDHAM Hearing Officer Division of Administrative Hearings 101 Collins Building Tallahassee, Florida 32301 (904) 488-9675 COPIES FURNISHED: Honorable Jacob Varn Morris W. Milton, Esquire Secretary, Department of Douglas A. Mulligan, Esquire Environmental Regulation Post Office Box 13517 2600 Blair Stone Road St. Petersburg, Florida 33713 Tallahassee, Florida 32301 Alfred W. Clark, Esquire Vincent L. Nuccio, Jr., Esquire Department of Environmental Post Office Box 1110 Regulation Tampa, Florida 35601 2600 Blair Stone Road Tallahassee, Florida 32301 Gene T. Hall, Esquire Elliot Dunn, Esquire 209 East Robertson Street Post Office Box 1110 Brandon, Florida 33511 Tampa, Florida 33601 Richard S. Smoot Ronald Frink, President Post Office Box 682 Florida Water Well Association Seffner, Florida 33584 Post Office Box 11648 Tampa, Florida 33680
The Issue Whether permit application SWO 13-5152, should be granted under Chapter 403, Florida Statutes. This case involves the application of Respondents City of North Miami and Munisport, Inc. to Respondent Department of Environmental Regulation (DER) for an operating permit under the provisions of Chapter 403, Florida Statutes, and Chapter 17-7, Florida Administrative Code, to operate a sanitary landfill located in North Miami, Florida. DER granted provisional approval of the application by the issuance of a Notice of Intent to issue the permit on January 27, 1978. Petitioners filed the instant petition of February 13, 1978, challenging the issuance of the proposed permit. Final hearing herein was originally scheduled for April 7, 1978, but at the instance of the parties was continued and reset to commence on October 18, 1978. During the course of the final hearing, 29 witnesses presented testimony, including six public witnesses. (List of public witnesses - Hearing Officer's Exhibit 3) A total of 35 exhibits were admitted in evidence. Three exhibits (Exhibits 5, 13 and 15) were rejected by the Hearing Officer.
Findings Of Fact By application dated November 14, 1977, Respondent City of North Miami, Florida, as owner, and Respondent Munisport, Inc. as the "responsible operating authority" requested Respondent DER to issue a permit to operate a solid waste resource recovery and management facility consisting of 345.90 acres located at 14301 Biscayne Boulevard, North Miami, Florida. The site, known as the North Miami Recreation Development, had been operating as a sanitary landfill under temporary operating permits (TOP) issued by the DER on May 8, 1975 and September 21, 1976. The 1976 TOP provided for an expiration date of July 1, 1977, and contained various conditions designed to give the permittees a reasonable period of time to conform to the DER regulations relative to sanitary landfills. These included standard requirements such as the rendering of reports on the operation of the facility and prohibiting the deposit of raw and infectious waste, or hazardous waste that had not been rendered safe and sanitary prior to delivery. Additionally, the permit conditions required the facility to be so operated that it would cause minimum adverse effects on the environment, such as objectionable odors, contaminated storm water runoff, or leachates causing degradation of surface of ground waters. Further, the permit provided for a three-month review program after its issuance to consider the feasibility of dumping solid waste in 63 acres of submerged land subject to previous filling with clean fill and/or construction debris, filling of land above mean high water with garbage either above clean fill or above trenches filled with wood and construction debris and covered with clean fill, and a six-week period of weekly water quality monitoring at agreed to sites for analysis by both permittees and the Dade County Environmental Resources Management (DERM). The permit further prohibited the placement of refuse waterward of the mean high water line or in trenches cut below the natural ground water table. (Exhibits 1, 4). By letter of January 27, 1978, DER gave notice to the applicant of its intent to issue the requested operation permit for the solid waste disposal facility and stated therein the following reasons for its determination: The solid waste disposal site is in the public interest. The Department feels that the site will not substantially affect the water quality or interfere with the area's wildlife. The applications and plans for this facility have been evaluated and found to be in conformance with Chapter 403, F.S., Chapter 17-4, FAC, and Chapter 17-7, FAC. The letter stated standard conditions to which the permit would be subject, including special conditions that had been noted in the 1976 TOP. It also prescribed specific conditions that no solid wastes could be placed within 30 feet of any existing or future lake area, no dumping below water at any time nor in any dewatered excavations, and that a quarterly water quality monitoring program at monitoring wells No. 4 through 12 be sampled for specified substances. Proposed Condition 16 stated as follows: Solid waste shall be deposited in locations consistent with those approved in the Army Corps of Engineers' dredge and fill permit #75B-0869. No solid waste shall be deposited in the areas commonly known as the wetlands and transitional zones of said wetlands, as shown on the attached map. Subject to the Corps approval of proposed modifications to permit #75B-0869, a revised DER solid waste permit will be issued consistent with the approved modifications. A sketch of the landfill site purporting to designate the landfill deposal area, wetlands and transitional zone, and mean high water line was attached. (Exhibit 3) The Petitioners consist of the Florida Audubon Society, which has some 2,000 members residing in Dade County, Tropical Audubon Society, which is affiliated with Florida Audubon Society; Keystone Point Homeowners Association, Inc., comprised of approximately 425 owners of mostly waterfront or canal homes in North Miami within a mile of the landfill site; Thomas Pafford, North Miami, Florida, who uses the waters of Biscayne Bay and nearby wetlands for recreational purposes; and Maureen B. Harwitz, who resides within a half mile of the landfill site and uses Biscayne Bay and the mangrove preserve adjacent to the landfill site for recreational purposes. Members of the above-named organizational groups use the waters surrounding the landfill site for recreational purposes and are concerned that the waters and fish and animal life therein will be adversely affected if the operation permit is granted. (Testimony of Lee, Brown, Pafford, Lippelman, Harwitz) Munisport has been operating the North Miami landfill under a lease with the City of North Miami since approximately 1974. The ultimate aim is to convert the area into a recreational complex consisting of golf courses, club house, and other sports facilities. The site was used as an unregulated dump for many years prior to initiation of the Munisport operation. The site has been the subject of previously issued state and Corps of Engineer dredge and fill permits which are not the subject of this proceeding. The landfill site occupies an area generally between Northwest 135th Street on the south and Northwest 151st Street on the north. It lies between Biscayne Boulevard on the west, and state mangrove preserves and land of Florida International University on the east. It is less than a mile to Biscayne Bay on the east side of the landfill. The nearest point of entry is in the southeast area where Arch Creek empties into the Bay. At this time, Munisport has filled approximately 210 acres at the site with ten feet or more of fill material. A final cover has been completed over about 70 acres of this land and a golf course is presently being constructed. Pursuant to the dredge and fill permits, five lakes approximately 35 feet deep are nearly completed and some six or seven more are to be dug in the future pursuant to those permits. These lakes are separated from the solid waste by a 30 foot wide dike of clean fill. Although some cover material has been trucked to the site, about 1.6 million cubic yards of fill from the excavated lakes have been or will be utilized in cover operations for the landfill. The solid waste layer averages 15 feet in depth and lies about two feet above the ground water table. About 230 acres lie within the upland fill area above the mean high water line which is not within the area of jurisdiction of the Army Corps of Engineers. The mean high water line has been established by appropriate procedures under Chapter 177, F.S., and the surveying procedures were approved by the Department of Natural Resources on April 6, 1978. Although not stated in the Notice of Intent to issue the requested permit, DER intends to restrict the life of any permit to the time when the Metropolitan Dade County Resources Recovery Facility commences operation in approximately two years. The applicants and Dade County also have a memorandum of understanding to this effect. (Testimony of Stotts, Checca, Exhibits 1, 2, 35, 36, Hearing Officer's Exhibit 1) Munisport receives solid waste from a variety of firms, institutions, and surrounding municipalities. Its procedures are for vehicles to enter and exit the site from an access road leading to Biscayne Boulevard. A sign is located along the road indicating the operating hours, fee schedule, waste restrictions and other pertinent information. A large portion of the site is virtually inaccessible due to dense mangroves and mosquito control canals and ditches. At the check-in gate, a cursory inspection of vehicle loads is made by Munisport personnel who check the contents for quantity. Each load is directed to a designated place at the site where Munisport employees spread and compact the waste. At this stage, they are instructed to look for any unauthorized materials, such as hazardous and infectious waste. If such wasted is found, the offending party is required to remove it from the site. compactors and bulldozers push the solid waste to the face of the landfill and spread it out to facilitate compaction. During the hours of 6:00 P.M. to 6:00 A.M., a watchman is on duty at the site to accommodate customers. If less than four or five truckloads arrive during the night hours, the material is not processed. If a larger quantity is involved, a Munisport employee moves and covers the material prior to the following workday. Due to the high ground water tabled, the area method is used for filling the site. This is a procedure by which refuse cells are constructed in lifts not to exceed ten feet in vertical height. They are composed of cells which constitute a one-day quantity of refuse. Six inches minimum cover of clean fill is applied daily, and a one foot intermediate cover is applied within a year after compaction. The cells are compacted in two-foot layers and, upon completion of a particular area, a minimum of two feet of final cover is applied. A dike constructed of compacted limerock borders the east side of the site and basically constitutes the present mean high water line. It is designed to protect the adjoining 129 acres of mangrove preserve and Biscayne Bay from any adverse water quality which might occur from runoff of degraded waters from the landfill site in the event of contamination. (Testimony of Haddad, Checca, Exhibit 1, 9) The shallow soil underlying the landfill at depths ranging to almost ten feet consists of a combination of organic matter and debris from prior dump use, muck, and sand. Soil borings taken at the site show that limestone or calcareous rock known as Miami oolite is about eight feet below the soil layer. At this depth is found the Biscayne aquifer that carries the unconfined ground water in the area. The aquifer is approximately 160 feet deep under the site and constitutes the major source of water supply in Dade County. The gradient of the water table for the landfill site runs in a southeasterly direction toward Biscayne Bay. Approximately 75% of the surface soil layer consists of organic muck, whereas in approximately 25% of the area, which was previously filled in the southern and westerly portions before commencement of the Munisport operation, the soil is primarily of a sandy type. (Testimony of Checca, Pitt, Exhibit 1) Leachate is produced in sanitary landfills by precipitation that percolates down through decomposing refuse cells and picks up polluting substances created from the decaying solid waste. It can form a "plume" or "bubble" that takes the course of least resistance in flowing laterally or vertically through a landfill site. The strength and concentration of the leachate is dependent upon various factors including the composition, compaction, and the age of decomposing refuse, and the amount of water being introduced into the area. As it passes slowly through the soil beneath the solid waste material, the unsaturated soils act as filters and permit ion exchange which reduces the quantity of contaminants. Dilution takes place where leachate comes in contact with ground water and leachate movement occurs gradually through the ground water aquifer in its direction of the flow. The presence and movement of leachate normally can be detected by analysis of ground water samples taken at various places throughout the landfill site. (Testimony of Checca, Pitt, Coker, Exhibit 1) Commencing in 1975, a monitoring program was instituted at the sanitary landfill to determine its effects on the ground water regime. A number of monitoring wells at various depths were constructed at different sites at the landfill, and samples were withdrawn and evaluated periodically to determine the types and degrees of pollution being generated by the landfill. Background samples were also obtained from wells off the site to establish the general character of water quality in the area and to compare these samples with those obtained from the site. Additionally, "grab" samples were taken of water from the bay and nearby canals and wetlands. Locations of the background and sampling wells were established by the applicants in conjunction with the DER and the Environmental Protection Agency. To determine the amount of leachate that probably would be generated at the site, the "water balance method" of computing the estimated time required to produce leachate, as well as the quantity that probably would be generated upon completion of the landfill, was made by representatives of the EPA in 1975 utilizing specific climatological and surface conditions at the site. This study indicated that percolation of surface water would increase during the operation of the landfill and before final soil and vegetative cover were in place, and that leachate would occur in about a year in larger quantities than would be produced by a completed landfill. Tests conducted during the ensuing three-year period of both surface and ground water through the monitoring program have failed to produce evidence that water quality is not within acceptable parameters or that water quality in the area surrounding the landfill site has been degraded. No significant differences in the concentrations of various ground water constituents were found between samples obtained at the disposal site and those collected in the adjacent mangrove forest or background areas. Neither was any evidence of contamination from leachate found in samples of surface water collected in the vicinity of the landfill or in nearby natural areas. (Testimony of Checca, Pitt, Linett, Perez, Exhibit 1, Exhibit 33) Three basic factors have undoubtedly accomplished reduction in the amount of leachate generated at the landfill. These are (a) attenuation and filtration of pollutants by unsaturated soils between and beneath the refuse cells, (b) biological assimilation by organisms living within the refuse cells and underlying soils, and (c) dilution upon contact with the ground water. A hydrogeologic study shows that the uppermost 14 feet of the aquifer immediately below the landfill represents only 0.2% of the total discharges with a ground water velocity of less than 0.1 foot per day. This part of the aquifer therefore provides considerable detention time for the water that percolates through the landfill. The strata, as well as the overlying organic marine soils, provide the absorption and assimilation that removes pollutants from the water. After water percolates through this layer, it reaches the highly permeable Miami oolite that carries about 43% of the ground water flow. The effects of soil absorption, filtration through the upper 14 feet of the aquifer, and dilution within the aquifer have demonstrably been sufficient to assimilate the water that percolates through the landfill. It is estimated that the time of travel of ground water from the landfill site to the closest discharge point in Biscayne Bay is approximately 68 years. Although the attenuation capability of the organic muck soil underlying the greater part of the landfill is high, the older area of the site in the southwestern portion which had been filled before the Munisport operation commenced, has no muck and consists primarily of sand with a higher rate of permeability. (Testimony of Checca, Pitt, Teas, Exhibits 1, 33) The fact that the organic muck material under the landfill is not uniform throughout the site, plus the fact that there have been various breaches in the permeable oolite layer below the soil, will, in the opinion of some experts, eventually lead to the generation and movement of a leachate plume into such breaches and ultimately to Biscayne Bay. These breaches consist of the deep lakes at the site, the Arch Creek Canal to the south of the site and a dredged excavation at the exit of that body of water into the bay some 3,600 feet distant from the landfill. Additionally, these experts postulate that the dike located on the eastern border of the site will not prevent leachate from moving into the surrounding mangrove area. It is therefore estimated that in the above ways, large amounts of leachate would enter the bay and adjacent wetlands within a period of five to ten years. (Testimony of Coker, Hudson, Pasley, Browder, Exhibits 12, 14, 29, 30) Although water monitoring at various levels in and at probable discharge points near the site have not found degradation of water quality, the applicants propose to address any future leachate problems in a variety of ways. These include continuous periodic testing of water quality and monitoring wells, excavation of a canal on the upland side of the site to intercept leachate and treatment of any contaminated water therein or by pumping the water to an interior lake for treatment. Based on the particular type of any degradation, chlorination and precipitators would be utilized. Long-range problems will be further reduced by the ultimate construction of the golf courses and placement of final soil and vegetative cover to reduce percolation of surface water. This will be aggravated to an undetermined degree, however, by periodic irrigation of the golf courses. (Testimony of Checca, Pitt, Kelman, Exhibits 1,33) During the early years of the Munisport operation, a number of violations of the conditions of the temporary operating permit occurred, but for the most part these were caused either through simple negligence of landfill personnel, breakdown of equipment, or introduction of unauthorized materials to the site by Munisport customers. In these situations, Munisport usually took prompt and effective action to prevent recurrence and to remedy the problem. For example, on one occasion in 1977, some 12 drums containing residue of a chemical substance deemed to constitute "hazardous waste" was brought into the site by persons unknown and was found leaking into the ground. A number of violations and warning notices were issued to Munisport by the Dade County Department of Environmental Resources Management (DERM), primarily in 1976, involving the placement of tree cuttings and wood scraps into excavations containing water at the south end of the site. These occurred, however, during a period when Munisport was engaging in tests to determine the suitability of such operations in conjunction with DER. Additionally, in 1976 and 1977, Munisport was advised of violations in the placement of garbage in exposed water, uncovered garbage, and delivery of garbage after hours. Munisport has had a continuing problem over the years with the unauthorized delivery of hospital wastes from various customers to the landfill in spite of letters written to hospital facilities and delivery firms cautioning them concerning the prohibition against the introduction of such material to the landfill. DERM personnel concede, however, that the operation has been continuously improved and that it is well-conducted in comparison with other landfills in the country. However, they believe that lakes should not exist in landfills and that the North Miami landfill is too close to the wetlands. (Testimony of Morrissey, Karafel, Sobrino, Haddad, Checca, Exhibits 6-11, 17, 18, 20-24, 27, supplemented by testimony of Pafford and Exhibit 16) In a letter of January 17, 1977, DERM expressed concerns about the Munisport operation to DER. One of these concerns was that leachate would migrate to proposed golf course lakes and the resulting pollution would produce poor water quality. Although 1976 testing of then existing lakes at the site reflected unusually high amounts of fecal coliform, subsequent tests in late 1978 showed very little, but tests again in January, 1979, showed that several lakes were again somewhat high in coliform. Coliform is not considered to be a strong parameter in assessing the presence of leachate and amounts vary considerably from day to day in lake areas. Additionally, great numbers of birds are normally present on the landfill site during operations and contribute in raising coliform readings to some extent. Dade County has a current policy that does not permit lakes to be excavated on landfills operated by the county. (Testimony of Checca, Morrissey, Sobrino, Karafel, Kosakowski, Linett, Newman, Kelman, Perez, Exhibits 17, 19, 20, 24, 25, 31, 32, 37, 38)
Recommendation That a permit be issued to the City of North Miami, Florida and Munisport, Inc. to operate the solid waste disposal facility as described and under the conditions stated in the letter of the Department of Environmental Regulation, dated January 27, 1978, wherein it gave notice of its intent to issue the said permit. DONE and ENTERED, this 13th day of April, 1979, in Tallahassee, Florida. THOMAS C. OLDHAM Hearing Officer Division of Administrative Hearings 530 Carlton Building Tallahassee, Florida 32304 (904) 488-9675 COPIES FURNISHED: David Gluckman, Esquire 5305 Isabelle Drive Ken VanAssenderp, Esquire Tallahassee, Florida Smith, Young and Blue, P.A. Post Office Box 1833 Josepy D. Fleming, Esquire 620 Ingraham Building Marvin Sadur and 25 Southeast Second Avenue Richard J. Potash, Esquires Miami, Florida 33131 2000 L Street NW - Suite 612 Washington, D.C. 20036 Silvia Alderman, Esquire Assistant General Counsel Department of Environmental Regulation 2600 Blair Stone Road Tallahassee, Florida 32301
The Issue Whether the Florida Department of Environmental Regulation's (DER's) inclusion in Rule 17701.050(5)(d)1, Florida Administrative Code, of the sentence, "The bottom of the liner shall be constructed above the 10-year seasonal high groundwater level" (the challenged sentence), constitutes an invalid exercise of delegated legislative authority and whether the economic impact statement accompanying this rule is inadequate.
Findings Of Fact All parties stipulated and agreed to Finding of Fact No. 1 in their Prehearing Stipulation and it is adopted herein. WMIF and DER stipulated and agreed to other operative facts in their Prehearing Stipulation and those stipulated facts are adopted herein. All stipulations were included in the Prehearing Stipulation of the parties. BFI is engaged in Florida and elsewhere in the business of solid waste collection and disposal. BFI owns and operates solid waste management facilities throughout the state. BFI has obtained, and will seek to renew, permits authorizing the construction and operation of these facilities. BFI also is in the process of seeking permits that would authorize construction of new solid waste management and disposal facilities in Florida. The proposed rule, if adopted, will apply to BFI and its applications for these various permits. Accordingly, BFI will be substantially affected by the adoption of the proposed rule. WMIF is a Florida corporation engaged in the business of solid waste collection, disposal, treatment, and management in the state of Florida. The proposed rule will have a substantial effect on owners and operators of solid waste management facilities, like WMIF. WMIF currently owns and operates several solid waste management facilities in this state and plans to construct and operate new facilities in the future. WMIF has investigated the possibility and feasibility of designing a landfill in Florida which calls for placement of a bottom liner below the groundwater level. WMIF would propose to utilize this option in designing some of its future facilities in Florida, if this option is available. The challenged portion of the rule would prohibit use of this option. DER's proposed revision of Rule 17-701.050(5)(d)1, Florida Administrative Code, substantially affects the interests of WMIF. DER followed the procedures in Chapter 17-102, Florida Administrative Code, in adopting its revisions to Chapter 17-701, Florida Administrative Code. In late 1989, DER developed draft revisions to Chapter 17-701, Florida Administrative Code, primarily addressing liner requirements for landfills subject to the rule. On January 31, 1990, DER held a public workshop on its draft revisions to Chapter 17-701, Florida Administrative Code. At that workshop DER distributed to the public its workshop draft of its proposed revisions (hereinafter "the January draft"). On page 34 of the January draft, DER proposed new rule provisions at Rule 17-701.050(4)(d)1, Florida Administrative Code, (subsequently renumbered), including the following language: The bottom of the composite or double liner shall be above the most recent ten-year historic seasonal high ground water level, unless the applicant can demonstrate that the landfill design will provide equivalent protection for the environment from the infiltration of leachate even when the bottom of the liner is in contact with groundwater. On February 6, 1990, WMIF submitted written comments to DER on the proposed rule revisions. In its written comments, WMIF suggested that the language of the January draft quoted above be stricken because "there are circumstances where the desirable landfill design could result in the base of the bottom liner being installed below an existing water table." On March 9, 1990, DER published a Notice of Rulemaking (hereinafter "hearing draft") presenting its proposed revisions to Chapter 17-701, Florida Administrative Code, in the Florida Administrative Weekly, Vol. 16, No. 10, in preparation for an adoption hearing before the Environmental Regulation Commission (ERC). The hearing draft contained numerous revisions from the January draft. The above-quoted language from the January draft was deleted in the hearing draft. In response to DER's publication of the hearing draft, WMIF filed the instant rule challenge contesting, among other things, Rule 17-701.050, Florida Administrative Code, and the adequacy of the Economic Impact Statement. The ERC held a public meeting on April 12, 1990, at which time it considered the rule revisions recommended by DER. At that meeting, DER distributed to those in attendance a Notice of Change which set forth changes DER then recommended to its published hearing draft. During the course of the ERC meeting, the challenged rule provision was drafted by DER in response to a request by ERC members, and the provision subsequently was adopted by the ERC. The amendment to Rule 17-701.050(5)(d)1, Florida Administrative Code, which was adopted by the ERC is as follows: The bottom of the liner shall be constructed above the 10-year seasonal high groundwater level. The challenged sentence was not included in the published hearing draft of the rule or in DER's April 12, 1990, Notice of Change. During the course of the ERC meeting on April 12, 1990, the ERC adopted Chapter 17-701, Florida Administrative Code, including the challenged sentence. Subsequent to the ERC hearing on April 12, 1990, DER prepared a second Notice of Change, incorporating the challenged sentence. Landfills are large, concentrated piles of chemical-containing materials of widely varied description. When precipitation occurs, moisture percolates down through the waste, dissolving chemicals in the waste and forming leachate. The goal of DER's landfill liner design criteria is to contain that leachate, to prevent it from contacting groundwater, and, while it is contained, to remove it and treat it. Leachate is contained by a properly designed and constructed liner and it is removed by a leachate collection and removal system. Landfill liners are imperfect and therefore they leak. Engineering principles are employed to design liner systems to compensate for the fact that liners leak. A properly engineered system will maximize groundwater protection. There are at least four factors which affect leakage through liner systems: hydraulic head, interface conditions, residence time, and gradient direction. With regard to hydraulic head, the operative principle is that the greater the pressure (the greater the hydraulic head on the liner), the greater the leakage rate through the liner. With regard to interface conditions, the operative principle is that the lower the permeability of the material underlying the liner, the less leakage will occur through the liner. With regard to residence time, the operative principle is that the faster the flow rate through the leachate collection system, the shorter will be the period of time that the leachate is in contact with the liner and therefore the lesser will be the amount of leakage through the liner system. With regard to the concept of gradient direction, there are two types of gradient: outward g and inward gradient. In utilizing an outward gradient design concept, the landfill liner system is constructed above the groundwater table. If a leak develops through the liner system in such a landfill, the greatest driving force, or gradient, acting on the leachate is gravity: Whatever leachate comes out of the bottom of the liner will fall by gravity into the subsurface and the groundwater. In utilizing an inward gradient design concept, the liner system is placed below the groundwater surface after the design engineer determines, though calculations, how deep to put the landfill in relation to the groundwater level. The groundwater then actually creates a positive pressure on the outside of the liner system. Because that positive pressure is greater than the pull of gravity out of the liner, the pressure exerted by the groundwater allows some of that groundwater to move through any hole in the liner into the liner system where it can be collected and removed by the leachate collection and removal system. In the event of a leak through a liner system at a landfill which utilizes the inward gradient design, instead of the leachate escaping the landfill, groundwater flows into the liner system because the pressure of the water flowing into the landfill is greater than the pressure of fluid leaving the landfill. This results in there being present more liquid in the liner system than would otherwise be the case. Therefore, the liner system must be designed to collect and treat that increased volume of leachate. The inward gradient concept may be used to prevent groundwater pollution because, with ground water flowing into the liner system, leachate does not escape from the landfill and never gets into groundwater. Initially, in order to construct an inward gradient design landfill, it is necessary to artificially and temporarily depress the groundwater level at the landfill site, using a dewatering system. Several technologies are available for constructing an effective dewatering system. At an inward gradient landfill, it is necessary to continue to dewater to depress the groundwater level until enough waste has been placed in the landfill to counteract the force of the groundwater pushing up on the landfill liner system. When enough waste has been placed in the landfill, dewatering will no longer be necessary and the goundwater level will be restored, creating a true inward gradient. In an inward gradient landfill, the waste in the landfill does not come in contact with groundwater; rather, groundwater enters into the liner system where it is contained, collected and removed. The waste in the landfill does not escape from the liner nor does the leachate collected in the liner system escape into the environment. In an inward gradient landfill, the leachate in the liner system is more concentrated in terms of its chemical constituents than the groundwater below the liner system. This creates a concentration gradient, a ground force which tends to push the leachate from inside the liner system out through the liner and into the lower concentration side, the groundwater. However, in a properly designed inward gradient landfill, the design takes that concentration gradient factor into account and employs the upward gradient of the groundwater to counteract the concentration gradient in the leachate, since the upward gradient of the groundwater will be greater the deeper the landfill liner system is placed below the groundwater level. Inward gradient landfills have been designed, constructed, and operated in many places in the United States and in Canada. In several states, inward gradient landfills are required as the preferred design of first choice. Expert witnesses for both WMIF and DER agreed that the inward gradient design concept is a well established technology and is not new or innovative technology. Slurry walls are a containment design concept used in some landfill construction which employs the inward gradient design concept. A slurry wall consists of a trench-cut into the ground down to the depth at which is encountered a continuous layer of low permeability material underlying the site. This trench is backfilled with a low permeability mixture of materials. The trench is constructed on all four sides of the landfill to create a low permeability barrier around all sides and connected to the bottom of the landfill. The groundwater is pumped out of the area enclosed by the slurry walls so that the surface of the groundwater is artificially depressed within them. In a landfill design employing the slurry wall concept, the groundwater level is lower inside the slurry wall than it is outside, thereby creating an inward gradient and causing leakage of groundwater into the landfill instead of leakage of leachate from the landfill into the environment. The slurry wall system is an effective design, which is in use in the state of Florida. Not all sites are appropriate locations for an inward gradient design landfill. Hydrogeologic and soil conditions vary greatly around and across the state of Florida. In many areas, soils are sandy and provide little attenuation of contaminants. Also, in many areas, groundwater levels are close to land surface. In determining whether an inward gradient design is appropriate at a given site, an would consider the type of subgrade soils, the terrain, the degree of fluctuation in groundwater levels over time, the type of groundwater involved, and the financial capability of the landfill owner/operator to build and operate the inward gradient design landfill. The use of the inward gradient design concept in landfill construction would be inappropriate in southern portions of Florida, particularly in the Biscayne aquifer area. However, in many other areas of Florida it would be appropriate to consider utilizing the inward gradient design concept. One of the primary purposes of Chapter 17-701, Florida Administrative Code, is the protection of groundwater by establishing design criteria for landfills, which criteria are protective of that resource. Chapter 17-701, Florida Administrative Code, both as proposed and as adopted by the ERC, provides design criteria which must be met in the case of each proposed new landfill; however, there is no single standard, uniform design mandated by DER's rules. A variety of designs could be used to satisfy the design criteria of Chapter 17-701, Florida Administrative Code. The challenged sentence was added to Chapter 17- 701, Florida Administrative Code, because some members of the ERC expressed their opinion during the rule adoption hearing, based on their "gut" reaction, that there should be some language in the rule which prohibited the construction of landfills within groundwater. Those ERC members asked DER staff to propose language for insertion into the rule that would prohibit such construction. In response to that request Department staff proposed the challenged sentence for inclusion in the rule. The language which the Department had proposed in the January draft of the rule contained qualifiers which would have enabled a permittee to establish that its design of a landfill was capable of groundwater protection to an equivalent degree in relation to other criteria in the rule. However, the Department did not include that qualifying language in the sentence that it proposed to the ERC for inclusion in the rule because the ERC did not want any exceptions to the prohibition. The sentence added to Rule 17-701.050(5)(d)1, Florida Administrative Code, and which is ohallenged in this proceeding, forecloses at least one possible landfill design concept. The challenged sentence precludes the use of the inward gradient design concept which, at least at some bites and as agreed upon by both WMIF and DER experts, is the landfill design that would result in maximum groundwater protection. In the proper hydrogeologic setting, it can be demonstrated that an inward gradient design landfill provides not only equal but greater protection for the' environment than an outward gradient design landfill built above the groundwater level. There are no engineering papers, reports, studies, or data which would support a prohibition of the use of the inward gradient design concept at a landfill from an engineering standpoint. Instead, there is a large volume of technical information which would support the use of the inward gradient design from an engineering standpoint. The challenged sentence is not indicative of good environmental engineering and will not serve to meet DER's goals or the goals of the State in maximizing groundwater protection. DER has not conducted, prepared, or obtained any studies, data, reports, or other research in order to assess the validity or justification of the challenged sentence, and its employees conceded that there is no technical justification behind the challenged sentence. Both of the Department's employees testified that in their opinion, it was possible for a landfill Lo be designed with the bottom of the liner below the 10-year seasonal high groundwater level and for groundwater to be qualify protected from infiltration of leachate into the groundwater at that site, because of the operation of the inward gradient design principle, and that they were not aware of and did not consider any studies or scientific data that would contradict that opinion. The Department has never made a determination that the inward gradient design concept is not viable or that a landfill designed in that manner would be incapable of protecting groundwater to an equivalent extent in regard to other criteria in Chapter 17-701, Florida Administrative Code. In fact, both of the Department's representatives testified that they believed that the inward gradient concept is viable and that prohibiting use of this design option is illogical. Moreover, at the ERC meeting, Department representatives attempted to convince members of the ERC that the inward gradient design concept was viable' and that perhaps a greater degree of flexibility in the rule would be appropriate. The Department had no data and no studies on which to base a determination as to the specific high groundwater level which should be incorporated into the prohibition requested by the ERC. The selection of "the 10-year seasonal high groundwater level" as referenced in the challenged sentence was based on a spur of the moment decision or a "gut" feeling. The 10- year standard was selected arbitrarily because it wasn't too short or too long. At any given site, it will be very difficult to determine the 10-year seasonal high groundwater level. DER does not maintain data on the 10-year seasonal groundwater level at locations around the state, and insufficient information is available from other sources to accurately determine the 10-year seasonal high groundwater level at most locations around the state. At best, broad approximations of the seasonal high groundwater level at a particular site can e extrapolated from data available in the region in which the site lies. DER's representative acknowledges that the best approximation extrapolated from the scanty data could be considerably off from actual groundwater level. If the challenged sentence is deleted, Chapter 17- 701, Florida Administrative Code, still would require that a new landfill and its liner system be designed to maximize the integrity of the liner system and minimize the potential for infiltration of leachate into groundwater. Nothing in the rules adopted by the ERC would prevent the groundwater level from rising above the 10-year seasonal high groundwater level and coming into contact with a liner system constructed above that level since id-he challenged sentence does not specify a distance that the bottom of the liner would have to be constructed above the 10-year seasonal high groundwater level. Because at specific locations and times and under some conditions the actual groundwater level will exceed the 10- year seasonal high groundwater level, it is likely that the bottom of the liner will come in contact with groundwater on some occasions since the inclusion of the challenged sentence allows landfill liners to be designed and constructed in a zone which will be intermittently wetted. When that happens, the groundwater will put pressure on the liner system. Since the liner system would not be designed to contend with the force exerted by the groundwater, as is the case in an inward gradient design, over time, that stress on the liner would tend to weaken the liner. Despite the challenged sentence in Rule 17- 701.050(5)(d)1, Florida Administrative Code, the Department theoretically could consider approving the use of the inward gradient design concept for a landfill at a particular site under the alternate design procedures set forth in Rule 17-701.078, Florida Administrative Code. However, approval of an inward gradient design for a particular landfill using the alternate design procedure in the rule, would required the Department to approve a design specifically prohibited by the rule. As a practical matter, in reviewing an inward gradient design at a specific site, the Department will be faced with a proposal that flies directly in the face of its rule. Even if approved, that alternate design would be very difficult to defend in an administrative proceeding challenging the issuance of the permit and the approval of that alternate design. In order to obtain approval of an alternate design, an owner/operator of a landfill would have to demonstrate that it would suffer a hardship if the alternative design was not approved. Primarily, the type of hardship which would have to be demonstrated is an economic hardship. In many cases it would be difficult for the owner/operator to demonstrate an economic hardship if it is prohibited from using the inward gradient design concept. Both of the Department's employees testified that in their opinion, the very fact that the ERC expressed an intent to prohibit construction of landfills below groundwater level, and included the challenged sentence in the rule to accomplish that intent, would make it very difficult for a permittee to obtain approval of an inward gradient design concept as an alternate procedure under the rule. In fact, given that every landfill permit proposed for issuance by the Department in recent memory has been challenged in administrative proceedings, and that each of those proceedings has been a fairly arduous process for both the Department and the permittee, it would be especially difficult to defend a permit approving an alternate design which was specifically prohibited in the rule. Both of the Department's witnesses agreed that if the challenged sentence was not in the rule, both the permittee and the Department would have an easier time approving an inward gradient design at a particular landfill. Prior to the ERC meeting on April 12, 1990, DER prepared an Economic Impact Statement (EIS) regarding its proposed revisions to Chapter 17-701, Florida Administrative Code. The EIS did not provide a cost/benefit analysis of the challenged sentence, as required by Section 120.54(2), Florida Statutes, because that provision was drafted after the EIS was prepared. It is uncontroverted that a permittee would incur an economic impact because of the challenged sentence in the rule, prohibiting the use of the inward gradient design concept, because that would result in a diminution of landfill capacity available at a given site.
Recommendation Upon the foregoing Findings of Fact and Conclusions of Law, it is ORDERED that the sentence, "The bottom of the liner shall be constructed above the 10- year seasonal high groundwater level contained within proposed DER Rule 17- 701.050(5)(d)1, Florida Administrative Code, is an invalid exercise of delegated legislative authority. DONE and ORDERED this 6th day of June, 1990, at Tallahassee, Florida. DIANE K. KIESLING 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 6th day of June, 1990. APPENDIX TO THE FINAL ORDER IN CASE NOS. 90-2146RX AND 90-2148RX The following constitutes my specific rulings pursuant to Section 120.59(2), Florida Statutes, on the proposed findings of fact submitted by the parties in these cases. Some proposed findings of fact are rejected for more than one reason and accordingly are listed under multiple reasons for rejection. Specific Rulings on Proposed Findings of Fact Submitted by Petitioner, Waste Management, Inc. of Florida 1. Each of the following proposed findings of fact is adopted in substance as modified in the Final Order. The number in parentheses is the Finding of Fact which so adopts the proposed finding of fact: 1-56(1-56). Specific Rulings on Proposed Findings of Fact Submitted by Respondent, Department of Environmental Regulation Each of the following proposed findings of fact is adopted in substance as modified in the Final Order. The number in parentheses is the Finding of Fact which so adopts the proposed finding of fact: 2(2); 3(1); 5(5); 6(7); and 7(10). Proposed findings of fact 1, 4, 9-15, 17-24, and 26 are subordinate to the facts actually found in this Final Order. Proposed finding of fact 8 is unnecessary. Proposed finding of fact 27 is irrelevant. Proposed findings of fact 17 and 25 are unsupported by the competent, substantial evidence. COPIES FURNISHED: William D. Preston Thomas M. DeRose Attorneys at Law Hopping Boyd Green & Sams 123 Calhoun Street Post Office Box 6526 Tallahassee, Florida 32314 Lawrence E. Sellers, Jr. Attorney at Law Holland & Knight Barnett Bank Building Post Office Drawer 810 Tallahassee, Florida 32302 Chris McGuire Assistant General Counsel Department of Environmental Regulation 2600 Blair Stone Road Tallahassee, Florida 32399-2400 Dale H. Twachtmann, Secretary Department of Environmental Regulation 2600 Blair Stone Road Tallahassee, Florida 32399-2400 Liz Cloud, Chief Bureau of Administrative Code Room 1802, The Capitol Tallahassee, Florida 32399-0250 Carroll Webb, Executive Director Administrative Procedures Committee Room 120, Holland Building Tallahassee, Florida 32399-1300 A PARTY WHO IS ADVERSELY AFFECTED BY THIS FINAL ORDER IS ENTITLED TO JUDICIAL REVIEW PURSUANT TO SECTION 120.68, FLORIDA STATUTES. REVIEW PROCEEDINGS ARE COMMENCED BY FILING ONE COPY OF A NOTICE OF APPEAL WITH THE AGENCY CLERK OF THE DIVISION OF ADMINISTRATIVE HEARINGS AND A SECOND COPY, ACCOMPANIED BY FILING FEES PRESCRIBED BY LAW, WITH THE DISTRICT COURT OF APPEAL, FIRST DISTRICT, OR WITH THE DISTRICT COURT OF APPEAL IN THE APPELLATE DISTRICT WHERE THE PARTY RESIDES. THE NOTICE OF APPEAL MUST BE FILED WITHIN THIRTY (30) DAYS OF RENDITION OF THE ORDER TO BE REVIEWED.
The Issue Whether the Petitioner's request for variance should be granted.
Findings Of Fact Petitioner owns an undeveloped parcel of land in Palm Beach, County which is zoned industrial and on which he intends to construct a storage building to house and repair farm equipment. To provide sewage treatment at the site, Petitioner had designed an on site sewage disposal system and applied for a septic tank permit which was denied as was his variance request. The closest public sewage treatment plant to the property is over five miles from the site, and the closest private treatment is approximately three miles from the subject site. Petitioner has no easement to either site if capacity were available and if he chose to connect. However, the proof did not show capacity at either site. Although Petitioner does not intend to pollute the groundwater, the proof demonstrated that waste disposal into a septic tank from the maintenance and repair of farm equipment could result in the disposition of prohibited hazardous waste into the groundwater. Alternative methods of waste disposal are available which would properly dispose of the waste and, yet, protect the groundwater from contamination by hazardous waste. Such systems include certain aerobic treatment units and package plants. The monetary costs of these systems is greater than the septic tank proposal; however, the proof did not demonstrate that the cost was prohibitive or a hardship. Although the hardship, if any, caused by the denial of the variance was not caused by Petitioner, the proof failed to demonstrate lack of reasonable alternatives of waste disposal and the absence of adverse effect of the operation to the groundwater. Additionally, the proof failed to establish the ameliorating conditions of soil, water table or setback conditions although a survey of the property dated September 3, 1985, indicates that the subject parcel was not platted. Accordingly, the denial of the variance was proper.
Recommendation Based on the foregoing findings of fact and conclusions of law, it is RECOMMENDED that a final order be entered denying the variance. DONE AND ENTERED in Tallahassee, Leon County, Florida, this 6th day of July 1989. JANE C. HAYMAN 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 6th day of July 1989. COPIES FURNISHED: Lee B. Sayler, Esquire 50 South U.S. Highway One Suite 303 Jupiter, Florida 33477 Peggy G. Miller, Esquire Department of Health and Rehabilitative Services 111 Georgia Avenue Third Floor West Palm Beach, Florida 33401 Sam Power, Clerk Department of Health and Rehabilitative Services 1323 Winewood Boulevard Tallahassee, Florida 32399-0700 Gregory L. Coler, Secretary Department of Health and Rehabilitative Services 1323 Winewood Boulevard Tallahassee, Florida 32399-0700 John Miller General Counsel Department of Health and Rehabilitative Services 1323 Winewood Boulevard Tallahassee, Florida 32399-0700
