The Issue The issue is whether Respondent Department of Environmental Protection (DEP) may issue to Respondent Republic Services of Florida, L.P. (Republic), permits to construct and operate a Class III landfill, pursuant to Permit Numbers 266830-003-SC/01 and 266830-004-SO/01, as modified as set forth below.
Findings Of Fact Background On June 30, 2009, Republic filed with DEP an application for a permit to construct and operate a Class I landfill (Application). In response to DEP's request for additional information dated July 30, 2009 (RAI), Republic filed a response dated September 14, 2009 (RRAI), upon receipt of which, DEP deemed the Application to be complete. References to the Application typically include the Application, RRAI, and other materials, such as reports, plans, and drawings, that are part of the Application, as well as three subsequent modifications, which are detailed below. Republic revised several reports, plans, and drawings in the RRAI; references to these items, such as the Engineering Report and Operation Plan, are to the versions contained in the RRAI. On November 13, 2009, DEP filed its intent to issue construction permit #266830- 003-SC/01 (Construction Permit) and intent to issue operation permit #266830-004-SO/01 (Operation Permit; collectively, the Permit). Republic Services, Inc. and its affiliates constitute the second largest waste-management operator group in the United States. Their market capitalization is just over $11 billion. The capitalization of the affiliate formed to operate the subject landfill is doubtlessly less than $11 billion, as the record does not suggest that any significant part of the overall capitalization of Republic Services, Inc., and its affiliates would be at risk in the operation of the proposed landfill. Republic presently owns and operates a Class III landfill in the City of Bartow, Polk County, known as the Cedar Trail Landfill. The oldest part of this landfill is an unlined Class III landfill of 52.5 acres in the center of the property owned by Republic. Immediately west of this unlined landfill is a 30.7-acre lined Class III landfill, which comprises cells 1-4. The Cedar Trail Landfill is located at 2500 West State Road 60, about three miles west northwest of the intersection of State Road 60 and State Road 98, which marks the center of Bartow. The landfill is immediately west of E.F. Griffin Road. Petitioners Frost live on E.F. Griffin Road, about one mile north of the Cedar Trail Landfill. Petitioner Highland Lakes Estates Homeowner's Association serves a residential subdivision known as Highland Lakes Estates. Highland Lakes Estates occupies a notch at the southeast corner of Republic's property. Aerial photographs reveal the changing land use of the land on which Cedar Trail Landfill is situated. Fifty years ago, the land was vacant with indications of agricultural uses. At the site of the proposed landfill were mostly citrus groves on the west side and some rangeland or vacant land on the east side. Ten years later, a large area immediately northeast of the subject land reveals the effects of strip mining for phosphate. Three years later, in 1971, the mined area had greatly expanded to encompass all or nearly all of the subject site and much of the surrounding area, including the western half of what would become Highland Lakes Estates. By 1980, the pits had been refilled and active mining had ceased, and the streets had been constructed for what is now known as Highland Lakes Estates. By 1993, about three dozen homes had been built in this residential, large-lot subdivision. 9. The Cedar Trail Landfill was constructed in the early 1990s as an unlined construction and demolition debris landfill. Now designated an approved landfill for Class III waste, this facility accepts such waste as is defined by Florida Administrative Code Rule 62-701.200(14) (2010), which includes construction and demolition debris, yard trash, processed tires, asbestos, carpet, paper, glass, furniture (but not white goods), plastic, and other materials not expected to produce leachate that presents a risk to the public health or environment. A zoning/land use map reveals that the land for which the proposed landfill is proposed is designated "sewage/borrow pits/spray fields." Highland Lakes Estates occupies land that is designated single-family residential with a density of one dwelling unit on up to 2.49 acres. The Cedar Trail Landfill has been the subject of three recent environmental resource permits (ERPs). Appendix R to the Application is an individual ERP issued in April 2009, and Appendix R to the RRAI is a conceptual ERP issued in March 2005. The April 2009 ERP mentions that the entire stormwater project was conceptually approved by an ERP issued on September 10, 2008, but this ERP is not part of the record. In any event, these ERPs approve the construction of a comprehensive stormwater or surface water management system for the entire Republic property. In particular, the April 2009 ERP permits the construction of a borrow pit at the southeast corner of the Republic property and a modification of the perimeter ditch/wet retention system. The April 2009 ERP states that the permitted stormwater management system will provide total onsite retention for runoff from the 100-year, 24-hour storm. The April 2009 ERP requires 2.8 acres of compensation for 2.8 acres of encroachment in the 100-year floodplain. Specific Condition 14 prohibits excavation of the borrow pits to a clay confining layer or limestone bedrock layer. Specific Condition 20 prohibits the mixing of leachate with stormwater and provides that, if leachate enters stormwater, the stormwater becomes leachate. Presumably reflecting this permitting activity, Application Drawing 4, as revised in the RRAI, is the site plan, including the unlined Class III landfill, the four-cell lined Class III landfill immediately to the west of the unlined landfill, and the eight cells proposed to accept Class I waste. These eight cells are immediately south of the four cells of the lined Class III landfill. The two northernmost of these eight cells abut, on their east boundary, the unlined Class III landfill. The remaining six cells abut, on their east boundary, an 800-foot wide borrow pit, which lies between these cells and Highland Lakes Estates. Immediately north of Highland Lake Estates is a second borrow pit, and west of this borrow pit is the unlined Class III landfill. The other major feature on the site plan is a third borrow pit running, from west to east, along the north border of the lined Class III cells, the unlined Class III landfill, and the second borrow pit. Bearing no signs of ambitious reclamation activity, the backfilled mining cuts host large water storage areas and, as described in the application for the March 2005 ERP, wetlands of "very poor quality." The backfilled soils are best described as complex surficial soils, consisting mostly of fine sands with varying amounts of organics, silts, and clays. Geotechnical investigations of the Cedar Trail Landfill suggest that mining depths, although variable, probably averaged 40 feet. Petitioners and Intervenor are substantially affected by the Permit and the construction and operation of the proposed landfill, which will stand nearly 200 feet above grade and will be the focus of substantial activity six days per week during its years of operation. Like Petitioners, Intervenor owns land in the immediate vicinity of the Cedar Trail Landfill, which is in the jurisdiction of Intervenor, and Intervenor's various municipal operations are much affected by whether the proposed Class I landfill is permitted. Among other things, Intervenor has agreed to accept untreated leachate from the proposed landfill. Petitioners Frost built their home in 1980 or 1981. During the hours of operation of the existing landfill, Petitioners Frost constantly hear the beeping noise of heavy- duty equipment, presumably a safety device when the equipment is moved. Over a dozen lots in Highland Lakes Estates abut the property line of the Cedar Trail Landfill, and the closest residence is about 1000 feet from the nearest proposed Class I cell. At present, the existing landfill subjects the Highland Lakes Estates to constant noise during operating hours and a coating of dust inside their homes. Several residents of Highland Lakes Estates testified. Hard-working people, some of whom are now retired, these residents decided to purchase homes in Highland Lakes Estates because it was a sunny, healthy place to live. Over time, most of these residents, by varying degrees, have come to accept the fact of the Class III operations at Cedar Trail Landfill, but they object to the substantial intensification of land use that will result from a regional Class I landfill. One resident testified that she finds in her pool dirt that has escaped from the existing landfill, and she has become concerned about her grandchildren coming over to swim. Another resident testified that he only began closing his windows five or six years ago when the noise levels at the existing landfill increased; he eventually had to install a window air- conditioner. The same resident testified that the green herons and snowy egrets that he used to see around his house have not returned for five years, and his wife, who has health problems, including respiratory distress, would suffer from the expanded landfill operations. Application, RRAI, and Permit, Including Modifications The Permit incorporates the Application, including the RRAI, Engineering Report, Operation Plan, and drawings. Thus, all of the documents are part of the Permit. In the Application, Republic proposes to convert cells 5-8, which are not yet constructed, from a Class III to a Class I landfill and add four new cells adjacent to the unused cells. The unfilled portion of Cells 1-4 would continue to receive only Class III waste. Pursuant to Florida Administrative Code Rule 62-701.200(13) (2010), Class I waste is all solid waste, other than hazardous waste, that is not otherwise prohibited by rule. The Application states that the proposed landfill will serve communities within 100 miles. The service area of this regional landfill will thus extend in central Florida from Marion to Osceola counties, along the Gulf Coast from Pasco to Lee counties, and along the Atlantic Coast from Volusia to Martin counties. As stated in the Application, this service area is populated by 9.7 million persons, who would daily account for 3000 tons of waste at the Cedar Trail Landfill. Initially, according to the Engineering Report, the proposed landfill will receive 1600 tons per day of Class I waste, but, once the existing Class III cells are filled, the proposed landfill will receive 1600 tons per day of Class I waste plus the 1400 tons per day of the Class III waste that is currently going into the existing landfill. As revised by the RRAI, the life expectancy of the proposed landfill is seven years. The Application states that Republic will employ an attendant, a trained operator, and 3-5 spotters at the landfill. The Application reports that the landfill would operate Monday through Saturday from 7:00 a.m. to 6:00 p.m. and that the working face would be covered daily. The Application reports that Republic would install seven new detection wells and use 17 existing wells for monitoring groundwater and would use two existing staff gauges for monitoring surface water, evidently at a single location, as discussed in the next paragraph. 23. Application Appendix V is the Water Monitoring Plan. Appendix V states that surface water will be monitored every time that the stormwater pond for the leachate storage area discharges offsite, but not more frequently than weekly. Application Drawing 4, as revised in the RRAI, shows that the sole surface water monitoring location is close to the leachate storage tanks, which are described below. 23. Appendix V also requires leachate monitoring, "at least annually," for five field parameters--specific conductivity, pH, dissolved oxygen, colors, and sheens; eight laboratory parameters--including chloride, mercury, and total dissolved solids; and the parameters listed in 40 CFS Part 258, Appendix II, which includes a comprehensive list of volatile organic compounds; persistent organic pollutants, including 2,3,7,8-TCDD (a major dioxin) and Dibenzofuran; and metals, including lead and chromium. Fourteen days prior to all sampling events, Republic is required to notify DEP, so that it may obtain split samples for its own analysis. Republic is required to report the results of the groundwater monitoring quarterly and to analyze the groundwater data in a technical report filed with DEP every two years. Appendix V also requires monitoring for odors and combustible gases, mostly methane. Republic will monitor combustible gas quarterly at various ambient locations, such as the office buildings and to monitor combustible gas quarterly in the soil down to the seasonal high water table. The purpose of this monitoring is to determine combustible gas concentrations and, if they exceed 25%, take "all necessary steps to ensure protection of human health." Some confusion in the Application arises as to the issue of whether the Cedar Trails Landfill will be subject to, or voluntarily implement, the more elaborate provisions applicable to a landfill covered under Title V of the federal Clean Air Act, as amended in 1990. Regulated emissions for a new source might include particulate matter, sulphur dioxide, nitrogen oxides, volatile organic compounds (VOCs), and specified hazardous air pollutants. Appendix V states that the landfill will become a Title V landfill once permitted to receive Class I waste, and, at that time, it will be subject to a "more comprehensive system of landfill gas collection and monitoring." Appendix V assures that these items "will be addressed in separate documentation from this monitoring plan"--and, apparently, separate from the present record. By contrast, the Operation Plan concedes only that, based on the nature of Class I waste and the design capacity of the proposed landfill, Cedar Trail Landfill "may" become a Title V facility. The Operation Plan states: "If the regulatory thresholds at [Cedar Trail Landfill] are met [under Title V] requiring an active gas collection and control system (GCCS), [Cedar Trail Landfill] will submit as required the GCCS design plans for approval and install an active gas extraction system within the regulatory timeframes specified by Title 40, Code of Federal Regulations, Part 60, Subpart WWW." More specific provisions in the Operation Plan identify best management practices to prevent objectionable odors. Four practices are identified, including an "active gas collection and extraction system." On the DEP form application, which is a cover sheet to the more elaborate application materials, Republic checked boxes indicating that the landfill would use active gas controls with gas flaring and gas recovery, which is probably what is meant by an "active gas collection and extraction system." The Application provides that the landfill liner would be double composite; the leachate collections system would consist of collection pipes, geonets, and a sand layer; the leachate would be stored in tanks; some of the leachate would be recirculated as spray on the working face; and the remainder of the leachate would be stored onsite and periodically transferred to a wastewater treatment center for treatment. The Engineering Report states that the waste disposal footprint will not be located where geological formations or other subsurface features will not provide support for the waste. The Engineering Report identifies appendices addressing the slope-stability analysis and foundation analysis and relies on a March 12, 1997, report by Ardaman & Associates, Inc. (Ardaman Report), January 23, 2004, report by Golder Associates, Inc. (Golder Report), and June 26, 2009, report by Hanecki Consulting Engineers, Inc. (Hanecki Report). These items are discussed in greater detail below in connection with the sinkhole issue. The Engineering Report assures that the waste disposal footprint will not be within 500 feet of an existing or approved potable water well, nor will it be within 1000 feet of an existing or approved potable water well serving a community water supply. The Engineering Report adds that the minimum horizontal distance between waste deposits and the property line is 100 feet. The Engineering Report assures that the landfill footprint will not be in a dewatered pit, as the installation elevations are at least 2-3 feet higher than the seasonal high water table. The Engineering Report acknowledges that a small part of the eastern end of the four southernmost cells lies within the 100-year floodplain, as depicted by the Flood Insurance Rate Map effective December 29, 2000, and as shown in Application Appendix A, Drawing 1. Claiming that the relevant map was not revised in 2000, the Engineering Report asserts that the last update to the FIRM map was in 1975, and the depicted floodplain was filled during the mine reclamation process. The Engineering Report notes that the floodplain concerns were addressed in the April 2009 ERP. 34. The Engineering Report discloses two enforcement actions against Republic at the Cedar Trail Landfill. In a letter dated October 19, 2001, DEP warned Republic about noncompliant items at the site, and, in a notice of noncompliance dated January 30, 2006, DEP warned Republic not to use a new cell prior to construction certification of the cell's stormwater system. Both matters were reportedly resolved, and Republic has not been the subject of other enforcement actions for the Cedar Trails Landfill. At DEP's urging, the RRAI elaborates on enforcement actions against Republic or, evidently, Republic affiliates at a variety of Florida facilities, not just landfills. The additional information reveals that DEP imposed a fine of $61,300 for the October 2001 violations, which included disposing of unacceptable waste, storing an excessive number of tires and exceeding groundwater standards without notifying DEP, and a fine of $1000 for the January 2006 notice of noncompliance. The other enforcement actions against Republic or affiliates concerning landfills involved consent orders about the Nine Mile Road Landfill (Seaboard Waste): in February 2003, DEP imposed a fine of $13,000 in settlement of charges that employees were not removing all unacceptable waste from the site and, in November 2005, DEP imposed a $285 fine for a failure to submit required stormwater monitoring reports. There were many other enforcement actions, generally resulting in modest fines, but they involved hauling facilities, transfer stations, and materials recovery facilities, not landfills. The Engineering Report states that the proposed landfill is within six miles of, but greater than 10,000 feet from, the Bartow Municipal Airport. Airport safety is addressed in more detail below. The Engineering Report describes in detail the double composite liner system, which uses materials whose physical, chemical, and mechanical properties prevent failure due to contact with Class I waste and leachate, climactic conditions, installation stress, and other applied stresses and hydraulic pressures. The Engineering Report performs no contingency sinkhole analysis. The report does not suggest that the liner system could withstand the stresses and pressures resulting from any size sinkhole, so the necessary inference is that the liner will fail if any sinkhole forms directly beneath it. The Engineering Report states that waste placement will remain within the lined containment berm. The Engineering Report describes in detail the double composite liner system for use at the proposed landfill. The primary liner system and secondary liner system each comprises three layers with the top layer consisting of a composite drainage net, the middle layer consisting of a high-density polyethylene geomembrane with a minimum average thickness of 60 ml, and the bottom layer consisting of a geosynthetic clay liner with a maximum hydraulic conductivity of 5 x 10-9 cm/second. The Engineering Report describes in detail the leachate collection and removal system, which, sitting atop the primary liner, includes a 24-inch thick sand drainage layer with a minimum hydraulic conductivity of 1 x 10-3 cm/second, a composite drainage net, and a single perforated 8-inch diameter lateral pipe in each cell. The collection lateral pipes will gravity drain to the east to a header pipe that gravity drains to the primary leachate collection pump stations--one station for the four converted cells and one station for the four new cells. A smaller leachate collection and removal system will handle the leachate that penetrates to the leak detection layer by routing it to a secondary leachate collection pump station. Based on calculations derived from the HELP groundwater model, the leachate collection and removal system is designed to prevent leachate head from exceeding the thickness of the composite drainage net (about 1 cm) over the secondary geomembrane and from exceeding one foot over the primary geomembrane. According to the Engineering Report, flow meters will be installed at each of the pump stations to allow daily readings of the amount of leachate being pumped. At one foot of head over the primary liner, the Engineering Report expects just over three gallons per day collected at each secondary leachate collection pump station--significantly less than the leakage rate typical of a double liner system without a geosynthetic clay liner beneath the primary liner. However, the Engineering Report provides a standard action leakage rate of 100 gallons/acre/day, meaning that Republic is required to report to DEP liner leakage only when this leakage rate is attained. The pump stations will transmit the leachate to one of two above-ground, 150,000-gallon storage tanks. From these tanks, most of the leachate will be transported to an offsite location for treatment. However, up to 12,000 gallons per day of the untreated leachate will be recirculated to be sprayed on the working faces of the landfill. This is to control dust and possibly to assist with the degradation of the waste. The Engineering Report states that the Cedar Trail Landfill implements a facility-wide water quality monitoring plan. Upon completion of the pump stations for the eight cells that are the subject of the Application, Republic will expand its leachate sampling program to include annual sampling of the leachate collected in the primary and secondary leachate collection pump stations. The groundwater monitoring wells would be installed as closely as possible to the outer edge of the roadway that, with a stormwater ditch, will run the perimeter of the proposed Class I landfill. In the revised Engineering Report contained in the RRAI, Republic proposes a surface water discharge point in the stormwater pond located near the leachate storage tanks. The Engineering Report adds that Republic will continue to comply with the following prohibitions: No waste will be knowingly burned on site; Hazardous waste will not knowingly be accepted; PCB contaminated waste will not knowingly be accepted; Untreated biomedical waste will not knowingly be accepted. Please note that treated biomedical waste may be accepted at [Cedar Trail Landfill]'s Class I Landfill provided that the waste containers are marked "Treated Biomedical Waste.;" No waste disposal at the proposed Class I Landfill will occur within 3,000 feet of a Class I surface water body; [Cedar Trails Landfill] will not knowingly accept liquid waste within containers, excluding leachate and gas condensate derived from solid waste disposal operations. [Cedar Trails Landfill] will comply with the requirements of Rule 62- 701.300(10), FAC regarding the handling of liquid wastes; Neither oily waste nor commingled oily waste will knowingly be accepted; and Lead-acid batteries, used oil, white goods, and whole-waste tires will not knowingly be disposed of in the Class I waste disposal system. The Joint Stipulation to Permit Modification, identified above, adds four items to this list of operational prohibitions: i. Garbage will not be knowingly accepted; Household Waste, except waste from residential sources generated as Class III waste, will not be knowingly accepted; Animal carcasses will not be knowingly accepted; and Aluminum dross will not be knowingly accepted. Capitalized terms are generally defined in the Florida Administrative Code. Florida Administrative Code Rule 62-701.200(39) defines "Garbage" as " all kitchen and table food waste, and animal or vegetative waste that is attendant with or results from the storage, preparation, cooking, or handling of food materials." Application Appendix H is the Operation Plan, which also identifies the types of wastes to be permitted at the proposed landfill. Section 3(b) of the Operation Plan authorizes the proposed landfill to accept: Commercial waste Ash residue Incinerator by-pass waste Construction and demolition debris, including from a residence Treated biomedical waste Agricultural waste Industrial waste Yard trash, including from a residence Sewage sludge Industrial sludge Water/air treatment sludges Waste tires De minimis amounts of non-hazardous waste from incidental residential sources Section 5 of the Operation Plan provides, in relevant part: [Cedar Trail Landfill] will accept waste included in any of the waste categories identified under Section 3(b) of this Operation Plan[, but] will . . . NOT knowingly accept any hazardous waste, untreated biomedical waste, liquid waste (including paint), explosive waste, toxic waste, or radioactive waste for disposal at the [Cedar Trail Landfill.] Unacceptable types of refuse are listed below and will not be knowingly accepted for disposal. --Hazardous waste --Explosive waste --Radioactive waste --Drums that have not been opened and Emptied --Refrigerators, freezers, air Conditioners (white goods) --Any toxic or hazardous materials, i.e. batteries, solvents, oil, etc. --Automobiles or parts that contain fuel, lubricants, or coolants --Untreated Biomedical waste The original Application prohibited the acceptance of septic tank pumpage, but the application form accompanying the original Application indicated that the proposed landfill would accept industrial sludge and domestic sludge. After modification by the RRAI, the prohibition against accepting septic tank pumpage was deleted, and the Operating Plan added, among acceptable wastes, sewage sludge, industrial sludge, and water- and air-treatment sludge. Florida Administrative Code Rule 62-701.200(101) (2001) defines "sludge" to include solid waste pollution control residual from an industrial or domestic wastewater treatment plant, water supply treatment plant, air pollution control facility, septic tank, grease trap, portable toilet, or other source generating a waste with similar characteristics. Florida Administrative Code 62-701.200(64) (2001) defines "liquid waste" as any waste with free liquids, according to the "Paint Filler Liquids Test." As modified by the Joint Stipulation to Permit Modification, Section 5 of the Operation Plan was amended to add the following items to unacceptable types of refuse that will not be knowingly accepted for disposal: --Garbage --Household Waste, except waste from residential sources generated as Class III waste --Animal carcasses --Aluminum dross At the hearing, Republic and DEP agreed to an additional condition to the Operation Plan that unacceptable waste would include Garbage contained in commercial, industrial or agricultural waste. According to the Operation Plan, the initial waste screening occurs at the gate house where the attendant interviews the driver and inspects the incoming waste load. If the attendant sees more than a negligible amount of unauthorized wastes, he will reject the load and will contact the hauler to identify the source of the waste. Additionally, Republic will notify DEP if anyone tries to dispose of hazardous waste at the proposed landfill. As modified by the Joint Stipulation to Permit Modification, the Operation Plan was amended to provide a new paragraph between the paragraph addressing the initial waste screening at the gate house and, as discussed below, the second screening at the working face. The new paragraph provides: Any malodorous waste will be covered with mulch and/or additional soil or other approved cover materials to control odors promptly, within one (1) hour from the time of unloading, except in the event of exigent circumstances, such as extreme weather. Cedar Trail Landfill will promptly cover any sludge deposited on the landfill working face within one (1) hour from the time of the unloading, except in the event of exigent circumstances, such as extreme weather. At the hearing, Republic and DEP agreed to an additional condition to the Operation Plan, which would prohibit Republic from accepting malodorous waste or sludge that, due to exigent circumstances, it would not be able to cover within one hour from the time of unloading. If the load passes the initial waste screening, it will proceed to the working face of the landfill, according to the Operation Plan. At least one spotter will be stationed at the working face at all times that the landfill receives waste. Her job will be to detect unauthorized wastes. Republic is to assure that it has a sufficient number of spotters to find and remove unauthorized waste prior to compaction. The Operation Plan allows the spotter to work from ground level or the cab of a compactor. If the operator of a piece of heavy equipment is trained as a spotter, she may also serve as a spotter. During periods of higher waste traffic, the equipment operator will, according to the Operation Plan, "likely" need the assistance of another operator or spotter to screen the higher waste volumes. When finding unauthorized wastes in manageable volumes, the spotter or operator will remove these wastes by hand and place them into nearby containers for removal to an appropriate facility. The third waste screen occurs as the equipment operator spreads the waste, pursuant to the Operation Plan. The equipment operator is required to place any unacceptable observed wastes into containers, which will be located "within the lined area." These wastes will also be removed to an appropriate facility. In the RAI, DEP questioned the proximity of the containers to the working face, as the lined area consists of 72 acres, but, in the RRAI, Republic ignored the comment, restating only that the containers would not be located outside the lined area. The Operation Plan specifies a filling sequence. Republic will assure that the first layer of waste placed above the liner in each cell will be a minimum of four feet in compacted thickness and will be free of rigid objects that could damage the liner or leachate collection and removal system. Republic will maintain the working face to minimize the amount of exposed waste and initial cover necessary at the end of each day. The filling sequence will proceed until the permitted final grade elevations have been reached, less three feet for the final cover. The Operation Plan states that the initial cover at the Class I landfill will consist of a six-inch layer of soil that is transferred from onsite borrow pits or offsite sources. This soil will be compacted and placed on top of the waste by the end of each work day. At Republic's option, subject to DEP's approval, it may use a spray-on or tarpaulin cover, instead of a soil cover. The Operation Plan requires Republic to apply at least one foot of intermediate cover within seven days of cell completion, if additional waste will not be deposited within 180 days of cell completion. Republic may remove all or part of this intermediate cover before placing additional waste or the final cover. Through the placement of initial, daily, and intermediate cover, Republic will minimize the occurrence of moisture infiltration, fires, odors, blowing litter, and animals and other disease vectors. 59. The Operation Plan requires Republic to control litter primarily by daily waste compaction and cover. However, at least daily, if needed, employees will collect litter along the entrance and access roads and around the working face. Complaints about litter must be logged. In addition to the inspections detailed above, the Operation Plan establishes a random load-checking program to detect unauthorized wastes. Each week, Republic employees will examine at least three random loads of solid waste by requiring drivers to discharge their loads at a designated location within the landfill where the employees may undertake a detailed inspection. All random inspections will be logged. Notwithstanding the daily limit of 12,000 gallons per day, the Operation Plan prohibits Republic from spraying leachate during rain events. To apply the recirculated leachate, the lead operator will drive the leachate tanker truck on the working face, so that it can spray leachate over waste as it is being compacted, but after it has been screened by spotters. The spraying will be done to avoid causing leachate to pond atop the waste and will not be done within 50 feet of an outside slope. No restrictions apply to wind conditions. The Operation Plan states that, if the annual sampling of leachate water quality at the two pump stations reveals a contaminant in excess of the permissible limits listed in 40 CFR Part 261.24, Republic will start monthly sampling and notify DEP in writing. Also, the Cedar Trail Landfill will maintain a recording rain gauge. The Operation Plan requires Republic employees to conduct daily surveys for objectionable odors and take immediate corrective action, if odors are found at the property line. As modified by the Joint Stipulation to Permit Modification, this portion of the Operation Plan was amended to add two odor- remediation actions and another form of odor inspection. The two additional actions to prevent odors are to 1) provide additional cover using mulch, additional soil, or other approved cover material and 2) use odor masking or neutralizing agents. The new inspection provision states: Internal inspection will be performed on a weekly basis by a properly trained odor ranger or equivalently trained person. Such individual will tour the facility, property boundary, and the subdivision of Highland Lakes Estates . . . to identify any odors leaving the Landfill's property boundaries. The results of each weekly inspection will be document, and any odors identified will be mitigated. Another new provision from the Joint Stipulation for Permit Modification applies to the handling of sludge. As amended, the Operation Plan states: When accepting sludge from a new source or distributor, [Republic] will obtain information regarding the characteristics and constituents of the sludge, including a description of the industrial process or circumstances that resulted in the generation of the sludge. Upon delivery of the sludge, [Republic] will mix lime, sodium hydroxide, or any other suitable agents to eliminate objectionable odors as required during disposal of the sludge before the material is covered. Furthermore, [Republic] will obtain advance notice from contributors prior to delivery of any sludge and shall promptly cover any sludge unloaded on the landfill working face within one (1) hour from the time of unloading, except in the event of exigent circumstances, such as severe weather. [Republic] shall use its best efforts to avoid accepting or disposing of sludge on Saturdays, Sundays, or public holidays. Additionally, with respect to sludge received from wastewater treatment facilities only, such sludge shall not exceed the lesser of (1) twenty percent (20%) of the total volume of waste disposed in the landfill on an average monthly basis, determined annually on the prior calendar year, or (2) two-hundred (200) tons per day, averaged over the prior 12-month calendar year. Republic is required to monitor combustible gases quarterly and transmit the results to DEP, according to the Operation Plan. If Republic detects methane above the limits specified in Florida Administrative Code Rule 62-701.530 (2010), Republic must submit a gas remediation plan to DEP within seven days. The Operating Plan indicates that the separation of the waste from the groundwater prevents the saturation of the waste and, thus, the generation of odor. Sloping and compacting will promote stormwater runoff, again to discourage the generation of odor. The Construction Permit authorizes construction of the proposed landfill in accordance with the "rules[,] . . . reports, plans and other information" submitted by Republic "(unless otherwise specified)." This parenthetical reference provides that the provisions of the Construction Permit control over any contrary provisions in the other documents that are part of the Permit due to incorporation by reference. In addition to the original Application, RRAI, and drawings, the Construction Permit also incorporates Florida Administrative Code Chapter 62-701 (2001). The Construction Permit states that Republic may not violate the prohibitions set forth in Florida Administrative Code Rule 62-701.300, which is discussed in the Conclusions of Law. Construction Permit Specific Condition A.9.a requires notification to DEP of the discovery of limestone during excavation or discovery. Specific Condition A.9.b requires notification to DEP of any surface depressions or other indications of sinkhole activity onsite or within 500 feet of the site. Specific Condition A.9.c prohibits open burning. Construction Permit Specific Condition C.1.b prohibits the discharge of leachate, during construction or operation, to soils, surface water, or groundwater outside the liner and leachate management system. Specific Condition C.4 prohibits the acceptance of hazardous waste and does not condition this prohibition on Republic's knowledge that the waste is a hazardous waste. Specific Condition C.5 requires Republic to "control . . . odors and fugitive particulates (dust)" and "minimize the creation of nuisance conditions on adjoining property." "Nuisance conditions" include "complaints confirmed by [DEP] personnel upon site inspection." Specific Condition C.5 orders Republic to "take immediate corrective action to abate the nuisance" and to "control disease vectors so as to protect the public health and welfare." Construction Permit Specific Condition C.6.b requires immediate notice to DEP of any sinkholes or other subsurface instability. Specific Condition C.8 requires Republic to manage leachate in accordance with the Operating Permit and Florida Administrative Code Rule 62-700.500(8). The Operating Permit incorporates the same materials that are incorporated into the Construction Permit, again "(unless otherwise specified)." Like the Construction Permit, the Operating Permit incorporates Florida Administrative Code Chapter 62-701 (2001) and requires immediate notice to DEP in the event of a sinkhole or subsurface instability. The Operating Permit specifies that the action leakage rate is 100 gallons per acre per day and the leachate recirculation rate is 12,000 gallons per day. As modified by the Joint Stipulation to Permit Modification, Operating Permit Specific Condition A.1.b states: This Facility is not authorized to accept Garbage; untreated Biomedical Waste; animal carcasses; liquids and non-liquid PCB containing materials or wastes with a PCB concentration greater than or equal to 50 parts per million; Liquid Waste; and aluminum dross. Additionally, this facility is not authorized to accept Household Waste, except waste from residential sources generated as Class III waste. Class III waste means yard trash, construction and demolition debris, processed tires, asbestos, carpet, cardboard, paper, glass, plastic, furniture other than appliances, or other materials approved by [DEP] that are not expected to produce leachate which are a threat to public health or the environment as defined in Rule 62-701.200(14), F.A.C. Based on this authorization to allow certain wastes as described above from residential sources, and since the landfill design, including liner and leachate collection systems, meets the requirements of Chapter 62-701, F.A.C., for Class I landfills, the facility will be entitled to [the] household hazardous waste exemption pursuant to 40 C.F.R. 261.4(b)(1). Specific Condition A.9.c prohibits open burning. Operating Permit Specific Condition C.1.b prohibits the discharge of leachate to soils, surface water, or groundwater outside the liner. Specific Condition C.1.c prohibits the discharge of "residual contaminants," such as gasoline, oil, paint, antifreeze, and polychlorinated biphenyls (PCBs), onto the ground or into surface water or groundwater. Operating Permit Specific Condition C.1.k(1) provides that authorized waste types are those listed in Section 3(b) of the Operations Plan, and unacceptable wastes shall be removed from the site as described in Sections 3(a) and 7. As modified by the Joint Stipulation to Permit Modification, Operating Permit Specific Condition C.1.k(1) provides: "Waste types authorized for management at this site are those listed in Section 3(b) of the Operations [sic] Plan. Unacceptable wastes are those listed in Section 5 [of the Operation Plan] " Operating Permit Specific Condition C.1.k(2) requires the use of a sufficient number of spotters to remove unacceptable wastes, but allows Republic to direct its equipment operators to serve as spotters from the equipment. This condition allows DEP to require that spotters work from the ground, if DEP determines that spotting from equipment is not effective. Specific Condition C.1.k(3) requires Republic to remove unacceptable wastes immediately and not to unload additional wastes in the immediate vicinity until placing unacceptable wastes in the designated waste containers" "near the working face" and within the lined landfill area. Operating Permit Specific Condition C.1.l(2) requires Republic to inspect on each operating day the property boundary for objectionable odors and, if any are detected, abate them in accordance with Specific Condition C.5. Specific Condition C.5.a requires Republic to control odors, disease vectors (insects and rodents), and fugitive particles (dust and smoke) to protect the public health and welfare. Control is defined as "minimiz[ing]" the creation of nuisance conditions on adjoining property. Odors confirmed by DEP personnel are a nuisance condition, and Republic must take immediate corrective action to "abate" the nuisance. Specific Condition C.5.b provides that, if odor control measures do not "sufficiently abate" objectionable odors within 30 days, Republic will submit an odor remediation plan to DEP for approval. Operating Permit Specific Condition C.8.e requires monthly reports to DEP of leachate quantities. Specific Condition C.8.h(1) prohibits recirculation of leachate at rates that result in seepage that may discharge outside the lined area. Leachate may not be sprayed when the application area is saturated or during a rainfall event. There is no prohibition against spraying during windy conditions. Operating Permit Specific Condition E details the extensive water quality monitoring requirements. However, Specific Condition E.9.b requires only annual testing of the five field parameters, eight laboratory parameters, and the comprehensive list of Appendix II parameters set forth in 40 CFR Part 258, all of which are identified below. Specific Condition E.9.c provides that, if a contaminant listed in 40 CFR 261.24 exceeds the level listed therein, Republic will notify DEP and take monthly leachate samples until no exceedances are detected for three consecutive months. Operating Permit Specific Condition F.1.a states: "This solid waste permit will meet the statutory requirement to obtain an air construction permit before . . . constructing a source of air pollution, except for those landfills that are subject to the prevention of significant deterioration (PSD) requirements of Chapter 62-212, F.A.C." Such facilities are required to obtain an air construction permit from the Bureau of Air Regulations prior to construction. Specific Condition F.1.b requires Republic to comply with Title V of 40 CFR 60, Subparts WWW and CC. This section notes that Title V permit applications must be submitted to the District Air Program Administrator or County Air Program Administrator responsible for the landfill. Aviation Safety Landfills attract birds in search of food. Flying birds may interfere with aviation safety. Thus, landfills are typically not located in close proximity to airfields to minimize the risk that flying birds will interfere with airborne aircraft approaching or departing from an airport. The nearest airport to the Cedar Trail Landfill is the Bartow Municipal Airport, which is operated by the Bartow Aviation Development Authority. This airport is over five miles from the footprint of the active landfill and 4.6 miles from the boundary of the proposed site. Republic provided notice of the Application to all airports within six miles of the proposed landfill, the Federal Aviation Administration, and the Florida Department of Transportation. None of these entities objected to the proposed landfill. When Republic gave the Bartow Aviation Development Authority notice of an earlier application, which sought a permit for a landfill that would accept garbage, the authority objected to the proposal due to concerns posed by birds to aviation safety. When asked about the Application, the authority's executive director testified that she still has concerns about the proposed landfill, but she did not specify the nature of her concerns or her analysis. As explained in the Conclusions of Law, these are the only facts required for a determination of whether Republic has provided reasonable assurance of aviation safety. The record provides no basis for finding that Republic has failed to provide reasonable assurance of aviation safety. Neither the FAA nor the Bartow Aviation Development Authority has objected to the proposed landfill. The executive director's unspecified concerns do not override the absence of a formal objection from these agencies. Petitioners assign too much weight to the earlier objection submitted by the authority. The composition of the authority may have changed or some authority members may have decided they were wrong in their earlier analysis. This earlier objection does not outweigh the absence of objection to the present proposal from any of the aviation agencies and the absence of any evidence of the expected nature or extent of bird usage of the proposed landfill and the extent to which these birds would interfere with existing and expected flight paths of aircraft using the Bartow Municipal Airport. Public Health Petitioners' expert witness on public-health issues, Dr. David Carpenter, is a medical doctor with a long, prestigious history of public service, including with the Department of Defense, the National Institutes of Mental Health, the United States Public Health Service, and the New York Department of Health, where he served as director from 1980-85. At that time, Dr. Carpenter started the School of Public Health at the University of Albany. Republic's expert witness on public-health issues, Dr. Christopher Teaf, is an expert in the evaluation of environmental contamination, waste management, and toxicology, but not a medical doctor. Dr. Teaf is a professor at Florida State University and owns a small consulting firm. The major part of Dr. Carpenter's career has been devoted to research. For the past ten years, he has focused more on human health, especially human disease from exposure to environmental contaminants. Dr. Carpenter has considerable experience with the adverse effects of landfills on human health, but his experience has been mostly with older landfills, where containment measures were few and offsite releases were many. Clearly, Dr. Carpenter's experience does not extend to the role of landfill design, construction, and operation in the transmission of human disease. Thus, Dr. Carpenter is qualified to opine on the effects of pollutants that may escape landfills, but not on the relationship of landfill design, construction, and operation on the probability that a landfill will transmit pollutants. For the most part, Dr. Carpenter did not attempt to address matters outside of his expertise. However, Dr. Carpenter testified that the risk of disease or injury increased in relationship to the proximity of the person to the landfill. This testimony can only be credited if one assumes that the landfills are identical in terms of design, construction, and operation and in terms of the environmental conditions of the landfill site. In other words, in real-world applications, it is impossible to credit this element of Dr. Carpenter's testimony, especially to the extent of his implicit suggestion that public health is unreasonably endangered by the construction of a landfill, in compliance with all rules, that satisfies all of the separation criteria and design criteria set forth in the rules, as discussed below. By contrast, Dr. Teaf focused on the details of the proposed landfill. Applying his knowledge of toxicology, Dr. Teaf determined that the proposed landfill adequately protects public health. In making this determination, Dr. Teaf analyzed the effects of various design and operational characteristics of the proposed landfill, including the double liner system, the leachate collection and management system, the selection of appropriate waste types, the procedures for the evaluation and covering of sludges, the prohibition against municipal garbage, the restrictions on household items, the monitoring of groundwater and surface water, the stormwater management system, and the plans to control dust and odors. Dr. Carpenter's testimony and the literature that he sponsored suggested important links between older landfills and a wide range of human disease. But the recurring problem with Dr. Carpenter's testimony and the research articles that he sponsored was the inability to link this information to the proposed landfill. All of the landfills studied in his research articles were older, and most of them appeared to have been designed, constructed, and operated under far more relaxed regulatory regimes than exist today. Nothing in Dr. Carpenter's testimony or sponsored literature attempted to delineate the design or operational characteristics of these landfills, such as whether they were double- or even single-lined, served by leachate circulation and recovery systems, limited as to materials that they could accept, or required to install stormwater management and water monitoring systems. 93. Analysis of the risk to public health posed by the proposed landfill requires consideration of the various means of transmission of the pollutants received by the landfill: water, land, and air. Of these, water requires little analysis, on this record. Even Dr. Carpenter conceded that the proposed landfill does not appear to pose a threat to groundwater. The double liner, leachate collection and recovery system, and groundwater monitoring plan support the finding that groundwater transmission of pollutants from the proposed landfill is unlikely. Transmission by surface water is also unlikely. Compared to groundwater monitoring, surface water monitoring is limited. For instance, there is only a single monitoring site. Also, as noted above, the stormwater pond for the leachate storage area is expected to discharge stormwater offsite during excessive storm events, at which time surface water samples will be taken. However, a comprehensive surface water management system is in place at the landfill and will prevent offsite discharges in all but a few excessive rain events. Transmission by land is also unlikely. The Application contains engineering analysis of the proposed stability of the side slopes and a determination that they will be stable. The discussion of sinkholes, below, does not affect this finding. Treating dust as transmission by air, the only other means by which pollutants may transmit by land is by animals, such as insects, rodents, and birds. An important factor limiting the activity of animals in spreading pollutants offsite is the fact that the proposed landfill will not receive garbage. Although putrescible waste may be received within other categories of waste, the prohibition against receiving garbage will greatly reduce the amount of potential food sources for animals and thus the utilization rate of the proposed landfill by these animals. A further reduction in animal utilization will be achieved through the daily and intermediate cover requirements. Thus, transmission of pollutants by animals is also unlikely. Transmission by air takes several forms. Pollutants may be transmitted as or on dust, with water in the form of aerosol, or as gas. In terms of how transmission by air is addressed by the Permit, this means of transmission potentially represents a greater threat than transmission by water or land for four reasons. First, the explicit focus of the Permit, as to gas, is to avoid explosive concentrations of methane and objectionable odors, but not the transmission of other pollutants by air. Second, the effect of the Permit is to prohibit the release of pollutants into the groundwater or offsite surface water and to prohibit the release of pollutant-bearing land offsite, but no such flat prohibition applies to the offsite release of pollutants by air. Third, the leachate recirculation system provides a good opportunity for the release of certain pollutants into the air by aerosol or evaporation, but similar releases to offsite land, surface water, or groundwater are prohibited. Fourth, scientific understanding of the effects of exposure, especially by inhalation, to pollutants, especially in the form of organic compounds, is continuing to develop: with the use of chemicals increasing three fold in the 50 years preceding 1995 and approximately 80,000 chemicals in use in 2002, only a few hundreds of these chemicals have been subjected to long- or short-term study, resulting in the discovery that about 10% of the chemicals in use in 2002 were carcinogens. Transmission by dust appears to be limited by the frequent covering and spraying of the working faces. Although nearby residents complain of dust in their homes, the practices of the less-regulated Class III landfill cannot be extrapolated to the proposed Class I landfill. Thus, the prospect of dust transmission of chemicals contained in the fill received by the proposed landfill appears also to be slight. The use of untreated leachate as the spray medium to control the dust itself raises two risks, however. First, spraying leachate will release chemicals in aerosol. The potential range of aerosol is great, especially as the landfill ascends toward its design height of 190 feet. However, the risk of transmission by aerosol is reduced to insubstantial levels by adding a Permit condition that prohibits spraying during windy conditions. Second, depositing leachate on the landfill face will release chemicals through evaporation. The point of spraying the landfill face is to control dust between the addition of the waste materials to the pile and the application of the cover. Between these two events, dry conditions will sometimes intervene and may cause the evaporation of certain, but not all, pollutants. The leachate acquires pollutants as it percolates down the waste column and into the leachate collection system. As Dr. Teaf noted, the leachate becomes more concentrated as it recirculates, but, otherwise, this record is largely silent as to the likely composition of the recirculated leachate. However, for landfills accepting sludge, higher levels of mercury may be present in the leachate. As reported by the Florida Center for Solid and Hazardous Waste Management at the University of Florida, in a report issued March 2007, and titled, "Design and Operational Issues Related to Co-Disposal of Sludges and Biosolids and Class I Landfills--Phase III," one study found that the concentration of mercury in the leachate of landfills that receive sludge is almost three times greater than the concentration of mercury in the leachate of landfills that do not accept sludge. The same study reported that total dissolved solids and chlorides were present at greater concentrations at the landfills that did not accept sludge and that other parameters--unidentified in the cited article--were not significantly different between the two types of landfills. Republic proposes to recirculate substantial volumes of leachate--sufficient, for instance, to raise the moisture content of the fill from 25 percent to 28.9 percent. The Permit allows the proposed landfill to operate six days per week, for a total of 312 days annually. The Operation Plan prohibits the application of leachate during rain, but the number of days annually during which rain extends for the entire day is few, probably no more than a dozen. These numbers suggest that Republic may apply as much as 3.6 million gallons annually of untreated leachate to the landfill face. The 12,000 gallon-per-day limit and restrictions on head in the leachate collection and removal system effectively limit the quantities of leachate that may be recirculated, but the sole provision addressing leachate water quality is the annual monitoring event described above. Given the time required to analyze the many parameters included in the EPA regulation, for most of the year between tests, Republic will be applying over three million gallons of leachate whose pollutant concentrations will be completely unknown. Some assurances emerge, though, when considering air transmission of pollutants by class. In general, on this record, as to transmission by gas, there appears to be an inverse relationship between a compound's volatility, which is a measure of its ability to enter the air, and a compound's persistence. VOCs are one of the most dangerous classes of pollutants to public health and include such carcinogens as benzene, tolulene, xylene and, the most dangerous of all VOCs, vinyl chloride, which is released upon the degradation of such common substances as plastics, carpets, and upholstery. Biogas, which is generated by the anerobic decomposition of organic compounds in a landfill, contains mostly methane and carbon dioxide, but also significant levels of VOCs. When inhaled, the primary results of exposure to VOC are respiratory irritation and allergenic effects. Volatility is measured by vapor pressure, which is a measure of a chemical's ability to get into the air. As their name suggests, VOCs enter the air easily. They are also capable of traveling great distances due to their light molecule. However, VOCs are easily destroyed by sunlight and diluted by wind. Other organic compounds common to landfills are only semi-VOCs, such as PCBs. Although less volatile, these chemicals, too, are hazardous to public health--in the case of PCBs, in any amount. Due to this fact and their persistence in the environment, the United States has prohibited the manufacture of PCBs for over 30 years. However, not only are PCBs considerably less likely to enter the air than VOCs, they also travel shorter distances than VOCs due to a heavier molecule. Dr. Carpenter opined that there is little evidence that PCBs are an issue in the proposed landfill. Another class of organic compound, 1000 times less volatile than even PCBs, is phthalates, which are used in the production of plastics. Phthalates pose significant threats to public health, especially reproductive health. However, the exceptionally low volatility of this compound renders transmission by evaporation highly unlikely. Much of the regulatory framework imposed on landfill design, construction, and operation arises out of concerns for the control of human pathogens, which are infection-causing organisms, such as bacteria, viruses, protozoa, and parasitic worms. One of the great advances in human longevity in the United States occurred in the early 1900s--not with the development of antibiotics or improved medical care--but with the implementation of basic sanitation control and the removal of pathogens from the drinking water. For the proposed landfill, sludge will be the primary source of pathogens. Sludge is nutrient-rich organic matter, which will be received at the proposed landfill without any treatment except possibly dewatering. Even with the acceptance of sludge, the proposed landfill presents little risk for the transmission of pathogens. Pathogens communicate disease only when a person is exposed to an effective dose and are better transmitted by direct contact or animal than air. Bacterial pathogens are themselves killed by wind, as well as sunlight, temperature, and humidity differentials, so the preferred means of air transmission would be aerosol versus gas. The record permits no findings as to the persistence of pathogenic viruses, protozoa, and parasitic worms. However, as noted above in connection with the land transmission of pathogens, the immediate application of lime and cover to the sludge will tend to prevent the release of effective doses of pathogens by air, as well. The last major class of pollutant that could be transmitted by air is heavy metals, such as mercury or lead. Although these metals produce a wide range of neurological diseases and generally interfere with cognition and behavior, Dr. Carpenter admitted that heavy metals were not as much of a concern as VOCs, presumably due to their resistance to vaporization. Even though transmission by air is not as tightly controlled as transmission by water or land, for the four reasons noted above, there is little risk of transmission by air--i.e., dust, aerosol, or gas--when the specific properties of likely pollutants are considered. In all but five respects, then, Republic has provided reasonable assurance that public health will not be endangered by pollutants released from the landfill by water, land, or air. First, to provide reasonable assurance concerning public health, the Permit needs a condition that prohibits spraying leachate during windy conditions, which DEP may define as it reasonably sees fit. As noted in the Conclusions of Law, this is a requirement in the rules and, due to its importance, should be restated explicitly in the Permit, which restates numerous other rule requirements. Second, to provide reasonable assurance concerning public health, the Permit needs more frequent monitoring of leachate water quality, at least at the frequency, as noted in the Conclusions of Law, set forth in the rules. Large volumes of untreated leachate will be recirculated through the landfill. Even if aerosol transmission is controlled, transmission by evaporation of some pollutants, although not the heavy metals, is possible. Also, pollutants are concentrated in recirculated leachate and thus the consequences of transmission into groundwater or surface water, however unlikely, become greater. At the same time, the action leakage rate is generous--to Republic, not the groundwater. At 100 gallons per acre per day, Republic is not required to report to DEP possible liner leakage until about 7300 gallons per day are lost to the surficial aquifer. Suitable for the detection of catastrophic failures associated with most sinkholes, this action leakage rate is too high to trigger action for small liner leaks. If Republic is to be allowed this much leakage into the groundwater, it must identify the leachate's constituents and their concentrations at least semi-annually. Third, to provide reasonable assurance concerning public health, the Application must extend the right of split testing to all of the parties in these cases, if DEP fails to exercise its right to take a split sample. The spraying of untreated leachate and generous limit applied to liner leakage before reporting and remedial action are required underscore the importance to public health of independent leachate testing. There is no reason to allow budgetary constraints or administrative oversight to preclude Petitioners and Intervenor, who are uniquely situated to suffer from the escape of excessive pollutants in the leachate, from providing, at their expense, this independent leachate testing. Fourth, to provide reasonable assurance concerning public health, the Permit needs to restate accurately the language of the rules concerning the extent of knowledge required of Republic, if it is to be liable for the acceptance of certain prohibited wastes. Fifth, to provide reasonable assurance concerning public health, the Permit needs to be modified to ensure that at least one spotter, whose sole responsibility is spotting, will be assigned to each working face while the landfill is receiving waste. Sinkholes The sinkhole issue arises in the geotechnical analysis of the sufficiency of the foundation to support the considerable loads of a landfill and also in the stability of the side slopes of the landfill. This analysis starts with consideration of the geology of the area, of which Republic's property is a part, and, among other things, the potential for sinkhole formation in the area. The Cedar Trail Landfill lies within the Bartow Embayment and along the eastern slope of the Lakeland Ridge of the Central Lake District Physiographic Province. This embayment is a large erosional basin partially backfilled with phosphatic sand and clayey sand of the Bone Valley Member. At this location, the top of the Floridan Aquifer is formed by Suwannee Limestone, which consists of white to tan, soft to hard, granular, porous, very fossiliferous limestone with interbedded dolomite. This rock unit is 110-140 feet thick. Atop the Suwannee Limestone sits the Hawthorne Group, which comprises the Arcadia Formation, at the base of which is the Nocatee Member, which is a relatively impermeable sand and clay unit. Atop the Nocatee Member is the Tampa Member, which consists of hard, dense, sandy, locally phosphatic, fossiliferous limestone. The top of this member, which is the top of the Arcadia Formation, is locally referred to as the "bedrock complex," which marks the lower limit of phosphate mining. Atop the Arcadia Formation, still within the Hawthorne Group, sits the Peace River Formation, which consists of phosphatic clayey sand and clayey sand. The lower portion of the Peace River Formation is a relatively impermeable, undifferentiated clayey unit locally known as "bedclay." The Bone Valley Member of the Peace River Formation is mined for phosphate and is locally known as "matrix." Atop of the Peace River Formation are undifferentiated surficial soils, typically consisting of silty sand, clayey sand, and some hardpan and organic soils. These materials are locally known as "overburden." Phosphate mining is prevalent in the area, including, as noted above, much or all of the Cedar Trail Landfill site. Strip mining for phosphate normally removes the entire surficial aquifer, just into the bedclay. Mined areas are then backfilled with overburden spoil soils, clay, waste clay, and sand tailings. After backfilling, the soil strata bear little resemblance to premining strata. Sinkholes are prevalent in the general area surrounding the Cedar Trail Landfill. A sinkhole is a surface depression varying in depth from a few feet up to several hundreds of feet and in area from several square feet to several acres. Sinkholes are typically funnel-shaped and open broadly upward. Sinkholes form when weakly acidic groundwater creates cavities in the calcium carbonate within limestone. Soils above these cavities erode into the cavities. In the area that includes the Cedar Trail Landfill, cover-collapse and cover- subsidence sinkholes predominate among sinkhole types. A cover-collapse sinkhole, which is typically steep- sided and rocky, forms when cohesive soils over a limestone cavity can no longer bridge the cavity under the weight of overlying soil and rock. At this point, the cohesive soils suddenly collapse into the cavity. These are more common in the part of the state in which the Cedar Trail Landfill is located. A cover-subsidence sinkhole occurs due to the gradual lowering of the rock surface as solutioning occurs in the subsurface rocks. This type of sinkhole develops as subsurface soluble rock is dissolved and overlying soils subside into the resulting shallow surface depressions. Regardless of the type of sinkhole, borings into sinkholes will reveal zones of very loose soil sediments that have washed downward into the cavernous voids within the bedrock. This very loose soil zone is called a raveling zone, which starts at the limestone layer, as the overlying soils begin to collapse into the solution features within the limestone. As the loosening works its way upward toward the surface, it eventually results in the subsidence of the ground surface and formation of a sinkhole. Considerable sinkhole activity has taken place in the immediate vicinity of Republic's property. Most visibly, a sinkhole formed in 2006 in 285-acre Scott Lake, 4.5 miles northwest of the landfill. This sinkhole drained the entire lake and destroyed several structures. The Florida Geological Service sinkhole database, which consists of anecdotal reports of sinkhole activity, some of which are unverified, includes 49 sinkholes within five miles of the proposed landfill. Two documented sinkholes have occurred within .17 mile of the landfill--one of which is reported to be 125 feet in diameter and 80 feet deep. Based upon the information contained in the preceding paragraph, Clint Kromhout, a professional geologist with the Florida Geological Survey, opined on August 23, 2009, that the potential for sinkhole formation "within the proposed site and surrounding area" is "low to moderate." Mr. Kromhout does not provide a definition of "low," but part of his opinion is shared by the Golder Report, which agrees that the sinkhole potential on the proposed site is "low." The potential for sinkhole formation in the general area surrounding the proposed landfill, as distinguished from the site itself, is at least moderate. In their Proposed Recommended Order, Republic and Intervenor necessarily concede: "All parties acknowledge that the proposed landfill site is in a general region that has a relatively high frequency of sinkholes as compared with the rest of the state of Florida." It is misleading to characterize the area surrounding the proposed landfill as of low potential for the formation of sinkholes, unless there is another category, like "nonexistent." But characterizing the sinkhole potential of the surrounding area as moderate is not determinative of the likelihood of sinkholes at the landfill's footprint, nor is a site-specific geotechnical investigation mooted by such a characterization. Rather, characterizing the sinkhole potential of the surrounding area as moderate dictates the intensity and scope of the ensuing geotechnical investigation, if the investigation is to provide reasonable assurance of the structural integrity of the proposed landfill. Acknowledging moderate potential for sinkhole formation in the surrounding area, Republic has appropriately relied on three geotechnical reports, including three sets of boring data. The final of these reports, the Hanecki Report, is based on the collection and analysis of boring data, as well as a review of the data and analysis contained in the two earlier geotechnical reports, the Ardaman Report and Golder Report. The boring data reveal that the proposed landfill site features four units. Nearest the surface is Unit 1, which is brown to dark brown, medium- to fine-grained sand with minor amounts of clayey silt. Unit 1 is 0-10 feet thick. Next down is Unit 2, which is tan to gray, medium- to fine-grained sand with increasing silty clay or clayey silt. Unit 2 is 5-10 feet thick and generally marks the upper limit of fine-grained, granular soils (i.e., clayed sands and silty sands). Unit 3 is orange brown to yellow brown, gray and tan silty clay to clayey silt or fine sand and silty clay. Unit 3 is 5-15 feet thick. Unit 4 is gray and tan clayey silt or silty clay with minor amounts of fine sand. This material is very stiff or very dense, and most borings terminated in this unit. The few borings that penetrated this unit suggest that it may consist of dolomitic sandy clays and silts and dolomitic limestone to depths greater than 100 feet below grade. Units 3 and 4 generally mark the upper limits of low permeability/low compressibility soils. The Hanecki investigation comprised two main steps. First, Hanecki retained a subconsultant to perform electrical resistivity imaging (ERI) along 100-foot-wide transects run across the site. Any anomalies revealed by the ERIs were to be followed by standard penetration test (SPT) borings, which permit soil testing at predetermined intervals, as well as a measure of the compressibility of the soils. Compressibility is measured during the soil-testing intervals, during which the drill bit is replaced by a soil sampler. The driller records the number of blows required for a 140-pound hammer falling 30 inches to produce 12 inches of penetration. The value is expressed in N-values, where N represents the number of such blows. Looser soils produce lower N values. Another important piece of information obtained during SPT boring is the partial or total loss of circulation fluid during drilling. While the drill is penetrating soil, a slurry circulates through the borehole to prevent the collapse of the sides of the hole. This slurry is recycled during drilling, but, if the drill encounters a void, all or part of the circulation fluid is lost. The ERI survey revealed no real anomalies because of a narrow range of resistance values. However, taking relatively small differences in resistivity as an anomalies, Hanecki identified 14 features of interest. At each of these locations, Hanecki performed an SPT boring. Because the ERI transects were unable to span the two onsite ponds, Hanecki added two locations for SPT borings adjacent to each side of each pond, for a total of four additional SPT borings. At the request of DEP, Hanecki added a nineteenth SPT boring at Golder site G-11, which had revealed low N-values during Golder's borings. Hanecki extended the borings into "refusal" quality soil, which was defined as soils requiring more than 50 blows of the 140-pound hammer to achieve six inches or less of penetration. All of Hanecki's SPT borings encountered very hard limestone. Among the most significant findings of Hanecki's borings, only one boring, G-11, experienced any circulation fluid loss, and this was estimated at 50 percent. However, it is more likely that this partial circulation fluid loss is due to loosely deposited sands than a void that might be indicative of conditions suitable for sinkhole formation. Not all circulation losses indicate voids that that will result in sinkhole formation. Also significant among Hanecki's findings is a clayey soil, or bedclay, at every SPT boring, which severely limits hydraulic recharge to the limestone. By impeding vertical migration of surface and shallow subsurface water to the limestone layer, this bedclay "greatly inhibits limestone erosion." This bedclay also supports the looser soils above the bedclay and thus prevents raveling, without which sinkholes cannot form. Two borings--G-11 and F3-1--lacked a layer of Unit 3 or 4 soil above the limestone, but Hanecki concluded that the Unit 2 layers above the limestone at these locations contained sufficient clay or clayey sand to serve the same functions of impeding the downward movement of groundwater and preventing the downward movement of loose soils. This conclusion appears reasonable because Unit 2 is the uppermost reach of the finer- grained materials, of which clays and silts are examples when compared to sands. There is obviously some variability in the distribution of finer- and coarser-grained materials within each occurrence of Unit 2 soils. Hanecki's findings indicated intervals of loose soils, sometimes at depth, which typically would suggest raveling zones. At the proposed location, though, these findings do not support raveling due to the underlying bedclay layer and the history of mining, which probably introduced looser soils typically found closer to the surface through the entire 40-foot depth of the mine cut. Based on these findings, the Hanecki Report concludes that, regardless of at least moderate potential for sinkhole potential in the area, the footprint of the proposed landfill has an acceptably low risk of sinkhole development to permit development of the proposed landfill. This is a reasonable conclusion because it is supported by the data collected by Hanecki and his reasoned analysis of these data. Hanecki's conclusion is also supported by the data and analysis contained in the Golder Report and Ardaman Report, which are based on an additional 84 SPT borings, post- reclamation. Only about 12 percent of these SPT borings reached the limestone, and they cover all of Republic's property, not merely the footprint of the proposed landfill. Even so, these borings confirm two important findings of the Hanecki Report. First, they produced data indicative of an extensive bedclay layer intact on Republic's property. Second, the Ardaman and Golder borings reveal only two or three instances of partial circulation loss that, like the sole occurrence of partial circulation loss in the Hanecki borings, are located on Republic's property, but outside the footprint of the proposed landfill. Republic has provided reasonable assurance that the site will provide an adequate foundation for the proposed landfill and sinkholes are unlikely to undermine the structural integrity of the proposed landfill.
Recommendation It is RECOMMENDED that the Department of Environmental Protection enter a final order granting the Construction Permit and Operation Permit, but only if the Operation Permit is modified by the addition of the five items identified in paragraphs 172, 174, 175, 181, and 187. DONE AND ENTERED this 8th day of October, 2010, in Tallahassee, Leon County, Florida. S ROBERT E. MEALE Administrative Law Judge Division of Administrative Hearings The DeSoto Building 1230 Apalachee Parkway Tallahassee, Florida 32399-3060 (850) 488-9675 SUNCOM 278-9675 Fax Filing (850) 921-6847 www.doah.state.fl.us Filed with the Clerk of the Division of Administrative Hearings this 8th day of October, 2010. COPIES FURNISHED: Lea Crandall, Agency Clerk Department of Environmental Protection Douglas Building, Mail Station 35 3900 Commonwealth Boulevard Tallahassee, Florida 32399-3000 Tom Beason, General Counsel Department of Environmental Protection Douglas Building, Mail Station 35 3900 Commonwealth Boulevard Tallahassee, Florida 32399-3000 Mimi A. Drew, Secretary Department of Environmental Protection Douglas Building, Mail Station 35 3900 Commonwealth Boulevard Tallahassee, Florida 32399-3000 Ronald L. Clark, Esquire Clark, Campbell & Mawhinney, P.A. 500 South Florida Avenue, Suite 800 Lakeland, Florida 33801-5271 William D. Preston, Esquire William D. Preston, P.A. 4832-A Kerry Forest Parkway Tallahassee, Florida 32309-2272 Jennings Kemp Brinson, Esquire Clark, Campbell & Mawhinney, P.A. 500 South Florida Avenue, Suite 800 Lakeland, Florida 33801 Sean R. Parker, Esquire Boswell & Dunlap, LLP 245 North Central Avenue Bartow, Florida 33830-4620 Ralph A. DeMeo, Esquire Hopping, Green, & Sams, P.A. 119 South Monroe Street, Suite 300 Tallahassee, Florida 32301 Stanley M. Warden, Esquire Department of Environmental Protection 3900 Commonwealth Boulevard, Mail Station 35 Tallahassee, Florida 32399-3000 Paula L. Cobb, Esquire Hopping Green & Sams, P.A. Post Office Box 6526 Tallahassee, Florida 32314 John W. Frost, Esquire Frost Sessums Van den Boom & Smith, P.A. Post Office Box 2188 Bartow, Florida 33831 John Stanley Fus Highland Lakes Estates HOA 2190 Boardman Road Bartow, Florida 33830
The Issue The manner and extent to which the criteria of Rule 17-7.07, F.A.C., entitled "Dump Closing" may be required by Respondent with respect to the Town of Surfside Dump.
Findings Of Fact In 1949, Petitioner purchased approximately 378.8 acres of land located in the northwest section of Miami, Florida. It sold approximately 250 acres of the eastern portion in 1959 to County Line Development Company. Petitioner utilized the remaining land as a solid waste disposal facility known as the "Surfside Dump," and in early 1955, other municipalities in North Dade and South Broward Counties also began using the facility for waste disposal. Originally, "white" goods, rubbish, garden trash, vehicle bodies, and tires were disposed of at the site, in addition to domestic garbage. Somewhat later, the receipt of vehicle bodies and other oversize waste was discontinued. For a number of years, the basic procedure for disposal was to dump the refuse into open trenches where it was compacted by bulldozers and covered with a layer of locally available material. The dump presently is bounded by Northwest 215th Street on the north, Northwest 47th Avenue on the west, Snake Creek Canal on the south, and the land previously conveyed to County Line Development Company on the east. A large portion of the dump area on the west side has not been used since 1972. (Petitioner's Exhibits 1, 3) Inspections of the dump conducted by Department of Pollution Control representatives at various times from 1973 through 1975 revealed that waste was not being covered in a satisfactory manner in that trenches were dug from old refuse, raw garbage was pushed into the water-filled trenches and then recovered with the old refuse. In 1975, the County Line Land Company filed suit against the Petitioner in the Dade County Circuit Court complaining that the dump constituted a public and private nuisance and was being operated in violation of the county code relating to uncovered garbage, Chapter 10D-12 of the Rules of the Department of Health and Rehabilitative Services governing disposal of garbage, and Chapter 17-7 of the Department of Pollution Control pertaining to regulation of solid waste. The Circuit Court found that the dump adversely affected the health and welfare of the surrounding area, and that although the facility was being used for revenue purposes by Petitioner, the conditions existing there had not been improved over the years. It therefore enjoined Petitioner from accepting further refuse at the site commencing June 30, 1976, except from within its own boundaries. It further gave Petitioner until August 1, 1976, to show that it had complied with Chapter 17-7 of the rules of Respondent or that it had received a temporary operating permit under the pertinent regulations. The decision was affirmed by the First District of Appeal on January 4, 1977. State regulations in effect since 1962 have required sanitary landfills to dispose of garbage in compacted layers with not less than a daily six inches of cover material and a final covering of two feet of compacted earth unless otherwise approved by the regulating state agency. (Rule 170C-10.07, State Board of Health; Rule 10D-12.07, Department of Health and Rehabilitative Services)(Respondent's Exhibits 1-3) On February 4, 1975, the Department of Pollution Control sent Petitioner a Letter of Notice advising that the Surfside Dump was in violation of various provisions of Chapter 403, Florida Statutes, and Chapter 17-7, Florida Administrative Code, by not applying for a temporary operation permit. By letter of March 28, 1975, that Department sent a Warning Notice to Petitioner along the same lines and advising of civil penalties for violation of pollution control laws. On May 3, 1975, Petitioner filed an incomplete application for the temporary operating permit. However, it was not until January 20, 1976, that Petitioner ostensibly furnished the necessary exhibits and public notice of its application. By letter of February 9, 1976, the acting district manager of the Respondent, which had succeeded the Department of Pollution Control, informed Petitioner that the Public Notice which had been published did not meet departmental requirements. (Testimony of Quaas, Respondent's Exhibits 5, 13) On June 1, 1976, the Respondent issued a Notice of Violation to Petitioner which stated that the Surfside Dump was being operated without a valid and current permit in an unsafe and unsanitary manner and thereby had violated various provisions of Chapter 403, Florida Statutes, and Chapter 17-7 Florida Administrative Code. The notice included a section entitled "Orders for Corrective Action" which provided that the Petitioner should reimburse the Respondent for expenses, cease to accept any solid material as of September 30, 1976, and implement a specified system of operation and render monthly reports on the same. It also required Petitioner to close the site no later than July 1, 1977, with a final cover of two feet of clean compacted fill with side slopes not to exceed 3:1 slope, and for the entire site to be seeded or planted with grass or other suitable cover vegetation. The orders also required the Petitioner to complete his operating permit application by sending Respondent a compliance schedule and proof of publication of a Public Notice. Subsequently, on January 16, 1977, the parties entered into a "Consent Agreement and Final Department Orders" after having conducted informal negotiations in the matter. The agreement provided that Petitioner waived any right to a hearing under Chapter 120, F.S., and that it would close the site or convert it to a sanitary landfill within the time established in Rule 17-7.07, F.A.C. It required Petitioner to submit plans for closing or converting the site within a certain time period and for implementation of an Operation plan to cover each day's waste and any existing exposed waste with six inches of clean compacted fill. It further required the Petitioner to submit a plan for monitoring ground water for leachate no later than January 30, 1977. Thereafter, on February 25, 1977, Nathaniel M. Zemel, a consulting engineer employed by Petitioner, submitted a "Landfill Closing Plan" to Respondent's West Palm Beach office which provided for a minimum of 24 inches of earth cover over all refuse on the site. Mr. Zemel estimated that between 250 thousand and 300 thousand cubic yards of fill material would be required to complete the covering operation. However, by letter of March 25, 1977, Petitioner advised Respondent that it did not concur in Mr. Zemel's plan and that Dr. Damodar S. Airan would "further refine the plan to reflect new information." The Airan report was submitted to Respondent on October 5, 1977, and essentially concluded that the existing vegetation on the site would be killed and that other harmful effects would result if a final cover of two feet of fill were to be placed over the landfill area. The report therefore recommended that exposed areas of the dump be covered with approximately six inches of clean fill and that corrective measures for surface drainage be accomplished, including sloping, grading, and possible catchment and retention of surface runoff by a drainage canal leading to a small retention basin on the site. A closing plan with drawings to accomplish the report's recommendations was filed with Respondent on November 1, 1977. (Petitioner's Exhibit 1, Respondent's Exhibits 6, 7, 14-17) Respondent's staff reviewed the Airan report and closing plan and was of the opinion that the study did not prove the basic premise that six inches of cover over the dump area was adequate. Thereafter, on December 4, 1977, Respondent issued a Final Consent Order for Dump Closing," Order No. 91, which ostensibly permitted the Petitioner time to undertake a soil and vegetation effectiveness study conditioned upon its agreement to implement and adhere to a final closing and cover plan as determined by the Department upon its review of the results of the study. This order obviously had been framed prior to the submission of the Airan report since that report was the "soil and vegetation effectiveness study" referred to in the consent order which was to be submitted not later than October 5, 1977. The order also provided that Respondent's determination of a final closing and cover plan would be made no later than December 1, 1977 and that the final closing would be accomplished no later than March 1, 1978. Again, the terms of the Consent Order provided that the Petitioner waived any right to a hearing or administrative or judicial review of its terms. Respondent's review and determination of Petitioner's aforesaid study was reflected in a letter to Petitioner from its subdistrict manager, Warren G. Strahm, dated January 3, 1978. It stated that Petitioner's study did not provide evidence that six inches of final cover would minimize and control potential water pollution from vertical percolation of surface water, but that Petitioner's own report showed that thirty-two million gallons more of percolation would result from a six inch as opposed to a two foot final cover. The letter therefore directed Petitioner to implement and adhere to a final closing and cover plan that included a final cover of no less than two feet of compacted earth, grading and sloping of the area, seeding or planting the site with grass or suitable cover vegetation, monitoring of ground water for leachate , and compliance with all other requirements of Rule 17-7.07, F.A.C., by March 1, 1978. Petitioner thereafter filed suit against Respondent in the First District Court of Appeal, Case No. 11-447. The suit was dismissed on May 19, 1978, by joint stipulation of the parties wherein it was agreed that Petitioner would seek a Section 120.57, F.S., hearing. On May 25, 1978, Petitioner filed such a petition with Respondent seeking to have that agency declare Petitioner's final cover and closing plan requiring six inches of final cover to be valid, and that final cover only be required on those portions of the Surfside Dump which were actually used on or after October 1, 1974. (Petitioner's Exhibit 2, Respondent's Exhibits 8, 18, 19) The Surfside Dump has been closed to the receipt of solid waste since March 1977. Although some clandestine dumping of waste has occurred since that time, it has mostly been confined to an area outside of the fenced portion of the site. There are presently relatively small areas of exposed waste in about fifty per cent of the landfill area. Some waste may be seen at the ground level in vegetated areas. A certain amount of ponding occurs in areas of both sparse and dense vegetation. There is a heavy vegetative growth over approximately 90 to 95 per cent of the dump site, consisting primarily of torpedo grass, para grass, guineagrass, common rag weed, caster bean, and sedge. Torpedo grass is a principal species and is abundant in about two thirds of the vegetated area. (Testimony of Quaas, Conn, Hudson, Stotts, Hussin, Gatewood, Busey, Airan, Petitioner's Exhibits 1, 4, 5, Respondent's Exhibits 10-12) Ground water or infiltrating surface water moving through solid waste can produce leachate, a solution containing dissolved and finely suspended solid matter and microbial waste products. Leachate may leave a landfill at the ground surface as a spring or percolate through the soil and rock that underlie and surround the waste. However, since the solid waste is of variable composition, it is not possible to accurately predict contaminant quantities. In completed fills, the amount of leachate can be expected to decrease with time. Leachate percolating through soils underlying and surrounding the solid waste is subject to purification of the contaminants in a variety of ways, but is diluted very little in ground water. Although leachate from a landfill can contaminate ground water, it is necessary to determine the quality of ground water and the aquifer's flow rate and direction to assess its results. Grading of the landfill is a means of diminishing surface infiltration by promoting surface water runoff. Vegetation of a landfill helps to stabilize cover material and thus reduce infiltration. It also reduces infiltration by intercepting and evapotranspiring some of the precipitation. The soil cover over a landfill also reduces percolation into the landfill depending upon its permeability. Clayey and silty loams are well suited for final cover, but are not readily available in South Florida. Sandy soils are primarily available in that area, but allow increased infiltration of precipitation. As a landfill ages, the earth cover will be subject to settlement and maintenance may be required to fill in depressions to avoid ponding of rain water. Such a program should provide for repairing cracks in the fill area due to uneven settlement and reseeding and fertilizing as necessary on the repaired areas, to prevent major erosion and surface water ponding. Leachate leaving the bottom of solid waste can be undesirable for drinking water, surface water, industrial water or irrigation water. However, it is most difficult to determine the character and amount of leachate from a particular area due to the many complex factors involved in such an assessment. The most common method for leachate control is to minimize the amount of water infiltrating the site. Ground water monitoring is accomplished by obtaining samples from wells placed at various locations on and near the landfill. It is generally agreed among the expert authorities that a minimum of two feet of compacted soil is required for the final cover when closing a landfill under normal circumstances. It has been the policy of Respondent to apply the sanitary landfill closing requirements of a two foot final cover, as specified in Rule 17- 7.05(3)(m), F.A.C., to the closing of dumps. (Testimony of Quaas, Conn, Hudson, Stotts, Hussin, Busey, Snider, Respondent's Exhibits 21-27) Expert testimony establishes that most of the vegetative cover on the Surfside Dump will be killed if a two foot cover is placed over it. The plants would re-colonize after such disturbance, but it takes almost two years for new plant growth to reach maturity. The present vegetation has been on the site for a number of years. Vegetation normally will grow at a better rate if its roots extend through the cover soil into the solid waste. However, certain gases created from waste material can be deleterious. A six inch final cover over vegetation would permit certain species to survive well, including torpedo grass, which is abundant on the site. In bare areas, it is best to sprig torpedo grass which provides relatively rapid growth, or to plant bahia grass. (Testimony of Hudson, Gatewood, Busey, Petitioner's Exhibit 1) The landfill site consists of an undulating terrain with surface drainage going in different directions from high to low level areas, but the overall drainage pattern is in a northerly direction. Two low-lying areas in the center and eastern portions of the landfill are subject to ponding after rainfall. These areas need to be filled, graded and planted in order to provide an overall northward direction of flow, together with grading and sloping on the eastern and southern boundaries of the area. Petitioner proposes to install subsurface drainage pipes, if found necessary, to promote horizontal movement of surface water and to provide catchment and retention of surface runoff diverted from the landfill area. This may include a shallow drainage canal along the northern boundary leading to a small retention basin in the northwest corner. Although these proposals were included in Petitioner's final closing plan submitted to Respondent, they were not considered by the latter's staff in evaluating requirements for the dump closing. Some profile corrections of the site were accomplished during the past year which eliminated ponding in the southwest corner of the landfill and improved drainage in the western portion. When further profile corrections are made to remove the remaining low spots, it is estimated that surface and subsurface runoff would increase and result in less leachate reaching the ground water table. (Testimony of Hudson, Airan, Petitioner's Exhibits 1, 4) Field and laboratory tests performed to determine the permeability of the soils on the landfill were performed by Petitioner at representative sites and by surface and subsurface soil samples. These tests showed that the infiltration rate at unvegetated locations was lower than that of adjacent vegetated areas, but this was attributed to the fact that in unvegetated areas, the soil is heavily compacted, very rocky, or no fill material is present. When infiltration was measured directly on waste material, it was found to be lower than that for surface soil. Mathematical calculations as a result of the tests showed that a maximum of 32 million gallons more would percolate annually through a six inch soil cover than a two foot cover. However, these calculations did not take into consideration the amount of surface and subsurface runoff. Petitioner's experts estimate that at least half of the percolation would be dissipated in that manner, leaving approximately 16 million gallons annually that would penetrate through the solid waste to the ground water. In considering this fact and the amount of water flowing laterally through the waste material, Petitioner concludes that only approximately one per cent of the total water flowing through the average ten foot waste layer under the water table would consist of vertical percolation. (Testimony of Airan, Petitioner's Exhibits 1, 4, 6-8, 10-13, Respondent's Exhibit 31-33) The Surfside Dump overlies the Biscayne aquifer. The Snake Creek Canal at the southern boundary of the dump site flows into Biscayne Bay some miles distant. There is a well field approximately one mile south of the dump at Carol City. Upstream of the Snake Creek Canal to the west is the North Dade County Landfill which is still in use. Snake Creek Canal is approximately fifteen feet wide and the bottom of the canal is approximately fifteen feet below original ground level. It is approximately thirty feet below the top of the landfill surface. Ground water flows generally in a southeasternly direction through the landfill. Approximately ten per cent of the ground water flows through the solid waste and the remaining 90 per cent bypasses and goes around the perimeter of the landfill. In May, 1977, a water quality monitoring program was undertaken by Petitioner that utilized nine sampling wells in three clusters of three each located in the northwest corner, center, and southeast corner of the landfill. In each cluster, one well was drilled to about five feet below the solid waste layer, the second ten feet below that point, and the third was ten feet above the waste layer. Water samples were taken in 1977 and in 1978. Tests of the samples showed that water quality generally improved with the depth of the well, and that the center group of wells had the highest level of contaminants because they were drilled in the middle of solid waste layers. In a number of instances, the pollutant levels for various substances were in excess of state standards. One well in the center of the landfill was dry during the rainy season which could indicate that the center of the landfill is less permeable than the outer layers and that a certain amount of water had been subject to subsurface runoff. It is conceded by both parties that the location and method of sampling wells does not provide sufficient definitive information concerning water quality in the area and that further monitoring needs to be undertaken in the future. Testing of Snake Creek Canal from points upstream and downstream of the Surfside Dump show that the surface water quality is most affected by contaminants from upstream. The North Dade County Landfill west of the Surfside Dump is undoubtedly a major influence on the quality of Snake Creek Canal water prior to reaching the Surfside Dump area. Leachate has not been found in canal water samples even though it is sufficiently deep to intercept the same if present. However, it is conceivable that any leachate plume could extend below the bottom of the canal. (Testimony of Stotts, Hussin, Snider, Airan, Patton, Petitioner's Exhibits 1, 4, 9, 12, Respondent's Exhibits 29 a-f) Based on the foregoing Findings of Fact, it is further found: The Surfside Dump presently is contributing to contamination of the ground water table in an unknown amount and is a potential source of pollution to the Snake Creek Canal and Biscayne Bay; The amount of pollution caused by leachate can be reduced through the implementation of corrective measures for surface drainage, including the filling of low lying areas, and grading and sloping to permit maximum surface water runoff. Additionally, infiltration of water into the landfill will be reduced by preserving the existing vegetation thereon which is an important factor in stabilizing surface cover and reducing percolation through evapotransportation most of the present vegetation will not survive if a two foot cover of soil is placed over it, and reestablishment of vegetation to its present state will take approximately two years. A surface cover of six inches over the vegetation would permit survival of most existing vegetation.
Recommendation That Respondent issue a final order requiring Petitioner to comply with the requirements set forth in paragraph 6 of the foregoing Conclusions of Law with regard to closing the Surfside Dump. DONE and ENTERED this 11th day of January, 1979, in Tallahassee, Florida. THOMAS C. OLDHAM Division of Administrative Hearings Room 530, Carlton Building Tallahassee, Florida 32304 (904) 488-9675 COPIES FURNISHED: Silvia M. Alderman, Esquire Assistant General Counsel Department of Environmental Regulation Twin Towers Office Building 2600 Blair Stone Road Tallahassee, Florida 32301 Joseph C. Jacobs, Esquire Melissa L. Allaman, Esquire Ervin, Varn, Jacobs, Odom and Kitchen Post Office Box 1170 Tallahassee, Florida 32302 Stephen Cypen, Esquire 825 Arthur Godfrey Road Miami Beach, Florida ================================================================= AGENCY FINAL ORDER ================================================================= STATE OF FLORIDA DEPARTMENT OF ENVIRONMENTAL REGULATION TOWN OF SURFSIDE, Petitioner, vs. CASE NO. 78-1021 STATE OF FLORIDA, DEPARTMENT OF ENVIRONMENTAL REGULATION, Respondent. /
The Issue The issues considered at final hearing were those issues set out in Petitioners' Amended Petition For A Formal Hearing. At the conclusion of the final hearing the parties were given an opportunity to file a proposed recommended order and memorandum in support thereof. Such memorandum and proposed recommended order was received by the Hearing Officer from the Department of Environmental Regulation on November 10, 1976, from Leon County on November 12, 1976, and from the Citizens' Committee to Preserve Lake Lafayette on November 15, 1976. Having fully considered the matters presented herein, the Hearing Officer enters the following:
Findings Of Fact Respondent, Leon County, Florida, has applied for a construction permit to construct a sanitary landfill in Sections 4 and 5, Township 1 South, Range 2 East, Leon County, Florida. The proposed site consists of 79.9 acres off of U.S. Highway 27 South. The application is in proper form and contains all information required by the Department of Environmental Regulation. The area to be served by the proposed sanitary landfill is Leon County, Florida, with a projected average population of 155,200. The responsible operating authority as set forth in the application is Leon County. The evidence presented did not establish that the proposed sanitary landfill will attract high concentrations of rodents, insects, or birds which would do serious damage to the land and crops surrounding the site or which would adversely affect the health and welfare of the residents near the site. The application proposes a program for the extermination of any rats discovered on site and further proposes that the working faces of the landfill area will be kept as small as possible with all exposed waste materials covered as frequently as practical to minimize the problem of flies and insects during hot, humid periods. Evidence was presented indicating that construction of the proposed sanitary landfill site could adversely affect surrounding property value. However, the evidence was not sufficient to conclusively establish the extent of this affect nor the time at which it would occur or for which it would endure. As designed the proposed sanitary landfill would not cause any solid waste to be disposed of by being placed in or within 200 feet of any natural or artificial body of water or on the watershed of any surface water supply. Lake Lafayette is hydraulically connected to the Floridan Aquifer. The proposed sanitary landfill site is located at least 500 feet from the flood prone area of Lake Lafayette and 1,000 feet from Lake Lafayette proper. As designed the proposed sanitary landfill will not cause any solid waste to be disposed of by being placed in a sink hole or in the immediate area thereof. Solid waste will be disposed of by being placed in a trench and covered over with successive lifts similarly covered. There are no active sink holes on or in the immediate area of, the proposed sanitary landfill site. Three ponds exist in the immediate vicinity of the site, one of which is to be used for surface water runoff. These ponds were probably formed by past sink hole activity but from the site topography and water elevations it appears that the ponds are now stable and are probably not hydraulically connected with the Floridan Aquifer. No limestone or gravel pits exist on site. The entire proposed site is well above the +50' MSL contour line below which are found flood prone areas in the vicinity of the site. The water table of the site is more than 5 feet below normal ground surface. As designed the proposed sanitary landfill will not require the disposal of solid waste in an area immediately adjacent to or within the cone of influence of a public water supply. As designed the proposed sanitary landfill will not require the disposal of solid waste within 200 feet of any habitation or place of business served by a public water supply system or within 1,000 feet of any habitation or place of business served by an individual potable shallow water supply well with the following exceptions. There are three wells located on the property which would be owned by Leon County that may be within 1,000 feet of the disposal site for solid waste. Of these three wells one has been abandoned and will be sealed. A second is located south of the proposed site at an existing house and will be used as a source of non-potable water and for monitoring the potable aquifer. The third well is located on the northwest portion of the county property and will be maintained as a standby source of potable water. There are two other wells located on the property to be owned by Leon County which are more than 1,000 feet from the proposed disposal site for solid waste and could be used to monitor the Floridan Aquifer. There is a well which serves a private residence and farm located plus or minus 1,200 feet west of the proposed site for the disposal of solid waste. No solid waste shall be disposed of in any area open to public view from any major thoroughfare. The proposed site in not on any public highway, road, alley or the right-of-way thereof. The Lake Lafayette drainage basin is approximately six miles long elongated in a west-northwest, east-southeast direction. The width varies between one-quarter to one-half mile. The western end of the basin contains many sink holes which probably have open connections to the underlying bedrock. The eastern end of the basin, near the proposed landfill site, is swampy and contains many cypress trees. The Lake Lafayette drainage basin appears to be an area of recharge to the Floridan Aquifer. The proposed sanitary landfill site is not located in the Lake Lafayette drainage basin. The engineering firm of Ardaman & Associates, Inc., conducted a subsurface investigation of the hydrologic and soil conditions at the site of the proposed sanitary landfill. As part of their investigation they performed ten soil borings and installed seven deep ground water monitoring wells. The results of the investigation of Ardaman & Associates, Inc., indicates a low probability of sink hole occurrence. In the course of their investigation, Ardaman & Associates, Inc., discovered a depression in the ground water level at Test Hole No. 9. The significance of this ground water low is that it may be a localized area of recharge. However, as shown by the testimony of the engineers who conducted the investigation for Ardaman & Associates, Inc., as well as by the report of their investigation, this depression creates no realistic danger with regard to the introduction of pollutants into the aquifer or ground water supply, so long as no putrescible wastes are placed within a distance of 1,000 feet of Test Hole No. 9. The hydro-geologist testifying on behalf of the Petitioners stated that he believed the radius of influence of the depression at Test Hole No. 9 may actually be less than 1,000 feet and that maintaining 1,000 feet distance from Test Hole No. 9 is a conservative distance. As designed, the proposed sanitary landfill will not dispose of any solid waste or other putrescible waste within 1,000 feet of Test Hole No. 9. The soils found on the proposed sanitary landfill site are of low permeability and suitable for a sanitary landfill. The low permeability of the soils will limit both the lateral and vertical seepage of leachate. The vertical flow of potential leachate to the Floridan Aquifer has been estimated at a rate of 1.0 to 1.5 feet per year. The lateral flow rate of such leachate through the soils overlying the bedrock in the Lafayette drainage basin has been estimated at the rate of 2 feet per year. As has been noted above, the proposed sanitary landfill site is located approximately 1,000 feet from Lake Lafayette, and 500 feet from the +50' MSL contour line which has been used to describe the perimeter of the flood prone area of the Lake Lafayette drainage basin. At the estimated flow rate it would therefore take several hundred years for any leachate produced by the sanitary landfill to reach the Lake Lafayette drainage basin. The Floridan Aquifer underlies all of Leon County at depths of 100 to 500 feet. As designed the proposed sanitary landfill will have test wells constructed throughout the site to provide a means of detecting any lateral migration of contaminants from the landfill operation should such occur. Periodic samples will be taken from these test wells and analyzed. The monitoring wells will be set up in such a manner that regardless of the direction of flow of subsurface water they will pick up and detect any pollutants that may be passing from the landfill. Some of these test wells will be placed in close proximity to the proposed sanitary landfill site to give early warning of the existence of any leachate flow. If there is any problem with the flow of leachate from the proposed site it will be detected easily within the first five years of operation. Since it would take several hundred years to reach the Lake Lafayette drainage basin at the estimated flow rates this should provide adequate warning and reaction time for the alleviation of any potential pollution problem. A significant flow of leachate is not expected. The existing pond which will receive the surface runoff from the sanitary landfill site is likely of sink hole origin but after a reasonable investigation it appears that the pond is now stable and not hydraulically connected to the Floridan Aquifer. It is estimated that the pond can contain at least a 25 year storm rainfall though there might be some flooding from the pond in a 100 year storm rainfall. As designed, no significant amount of leachate, if any, will reach the surface water runoff retention pond. Petitioners' hydro-geologist did not state that the site is unsuitable for a sanitary landfill. Rather he testified that on the information he had reviewed, which information was that available to the Department of Environmental Regulation, it was his opinion that the Department of Environmental Regulation lacks sufficient information to determine if the proposed site is suitable from a water quality standpoint. Based upon all the testimony and evidence it appears as a matter of fact that the information available to the Department of Environmental Regulation is reasonably sufficient to determine the suitability of the proposed site. There has been no showing of a necessity for alining the proposed trenches which will receive the solid waste. The Planning Director for the Tallahassee-Leon County Planning Department, in a letter to the Department of Environmental Regulation stated that the use of the proposed site for landfill purposes is not inconsistent with the land use plan. He further stated his concern for traffic on U.S. Highway 27, the possible adverse aesthetic impact which he felt could be minimized and his concern that Lake Lafayette be protected from landfill leachate through engineering design. In their Amended Petition Petitioners raised the question of the present zoning of the proposed site. No evidence was presented by Petitioners to show that the site is not properly zoned. Based upon the testimony and evidence presented there appears little possibility that the proposed sanitary landfill will pollute or seriously damage Lake Lafayette, the Floridan Aquifer or any other source of public or private water supply. The proposed sanitary landfill as designed is not likely to cause any significant water pollution or to degrade water quality below those standards set by the Department of Environmental Regulation. None of the prohibitions set out in Section 17-7.04, F.A.C, exist so as to require the denial of the application for a construction permit for a sanitary landfill by Respondent, Leon County. The sanitary landfill criteria set out in Section 17-7.05, F.A.C., have been met by Respondent, Leon County.
Findings Of Fact Upon consideration of the oral and documentary evidence adduced at the hearing, the following facts are found: On August 31, 1978, Raymond M. Ewing Realty, Inc., also referred to herein as the "applicant," submitted its application to the Department of Environmental Regulation for a permit to construct an extended aeration wastewater treatment and disposal facility on Perdido Key in Escambia County. The Department of Environmental Regulation issued its notice of intent to issue the permit with conditions on December 5, 1978. The petitioner Perdido Key Development Association timely requested an administrative hearing and the motion to join Southwest Escambia Improvement Association, Inc. as a party petitioner was granted. The proposed facility is designed to serve a condominium complex on Perdido Key consisting of 72 units. It is expected that 250 gallons of water per day per unit will be discharged into the system, thus requiring an average daily design hydraulic flow of at least 18,000 gallons per day. The plant described in the application will have a capacity to handle 25,000 gallons per day. The plans and specifications, engineering report and application are in substantial conformity with each other. Substantial residential development presently exists on Perdido Key. No central sewer system exists to service Perdido Key, and only septic tanks and package sewage treatment plants are available for waste treatment purposes on the island. The proposed facility will use an extended aeration process whereby effluent is routed from the individual units through a filter within the plant and then discharged into an underground drainfield system. The facility is designed to remove 95 percent of B.O.D. and suspended solids. Duplicate blowers and pumps are included to insure continued operations in the event of failure of one of the units. In the event of a power failure, a contractual arrangement with the treatment plant operator will provide for the bringing in of emergency electrical generators. The 100 year flood elevation for this area is eleven feet. The top of the proposed plant is fifteen feet above mean sea level, and a water manifold is provided to prevent water from splashing into the plant. The drainfield is located approximately 330 feet from Old River, a body of water adjacent to Perdido Key. Such location is the farthest and highest reasonable point away from the River. While the plant is designed to remove over 90 percent of B.O.D. and suspended solids, it is not designed to remove nutrients or phosphorous from the effluent. The drainfield is located on porous coastal dune sand. There is an acceptable distance between the bottom of the drain field and the maximum high ground water level. There was evidence presented which illustrates that nutrients and phosphates will be removed through the absorption and precipitation phenomena as they move through the sand and become diluted by the groundwaters. Vegetation on top of the drainfield will also assist in the removal of phosphates and nitrates. Field testing has not shown any contamination of ground water or Old River by an existing sewage treatment plant. Among the conditions proposed for the issuance of the construction permit is that an application be submitted for an operation permit. Such application must include four months of results analyses and flow measurements to substantiate compliance with the applicable rules of the Department of Environmental Regulation. The initial test results must be provided within six weeks after the facility has been placed in operation. Further conditions require that there be no discharge to area surface waters, and that, prior to placing the facility into operation, the construction be certified and approved as having been completed in accordance with the approved plans and specifications. The petitioners herein are both organizations whose members own property, reside or have a business interest on Perdido Key. The members of the petitioners use the waters of Old River recreationally and commercially.
Recommendation Based upon the findings of fact and conclusions of law recited above, it is RECOMMENDED that the Department of Environmental Regulation issue to the respondent Raymond M. Ewing Realty, Inc. the requested construction permit subject to the conditions contained in the Department's initial notice of intent to issue the permit. Respectfully submitted and entered this 17th day of April, 1979, in Tallahassee, Florida. DIANE D. TREMOR, Hearing Officer Division of Administrative Hearings Room 530, Carlton Building Tallahassee, Florida 32304 (904) 488-9675 COPIES FURNISHED: M. Michael Patterson 26 East Garden Street Pensacola, Florida 32501 Daniel P Fernandez Assistant General Counsel Twin Tower Office Building 2600 Blair Stone Road Tallahassee, Florida 32301 Jeffrey T. Sauer Smith, Sauer and Venn, P.A. Post Office Box 12446 Pensacola, Florida 32582 Charles Collette, Esquire Post Office Box 10161 Tallahassee, Florida 32302 Secretary Jake Varn 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.
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 Bay County's application to construct a sanitary landfill comprising nearly 80 acres located at the north end of Bay County abutting Washington County near the intersection of S.R. 20 and S.R. 77 was initially submitted to the Department of Environmental Regulation (DER) in November, 1979 (Exhibit 1). The site is surrounded by 400 feet of pine woods which buffer the site from all roads and residences . There are no residences within several hundred yards of the proposed site and the nearest natural body of water is over one-fourth mile from the site. The noise generated by the operation of the landfill will be similar to the noise generated on S.R. 20 and S.R. 77 by passing vehicles. Following conferences between representatives of Bay County and DER and several revisions of the application of May 16, 1980 DER issued its notice of intent to grant the applied-for permit (Exhibit 10) and this proceeding was initiated by Petitioners. The site is located in an area of predominately "Lakeland series" sands which provides little barrier to the percolation of surface or ground waters into the Floridan Aquifer. The site is one of the highest in Bay County and the ground water table is located about 45 feet below the surface in this area. The Floridan aquifer lies some 100 feet below the proposed site and is in direct contract with the ground water table. Accordingly, contamination of the ground water by the proposed landfill would enter into the Floridan Aquifer and degrade the water quality of this aquifer. Additionally escaping leachate could contaminate and degrade the waters of the lakes in the general vicinity of the proposed site. As initially presented the application was denied by DER and recommended for denial by the other state agencies involved, viz. Florida Game and Freshwater Fish Commission and the Northwest Florida Water Management District. The reason for disapproval was that, absent some impervious surface between the aquifer and lakes in the vicinity could occur and was likely. Not only is the site located in a recharge area to the Floridan Aquifer but also in a karst area, in which the topography is marked by sinkholes resulting from the collapse of cavernous limestone under the ground. While the possibility exists that a sinkhole could develop under the proposed landfill this is no more likely than that a sinkhole will develop anywhere else in the northern half of Bay County. As finally proposed the site will be developed into cells some 400' x 500' x 28' deep which are expected to be filled in about six months, covered with a a clayey soil and vegetation replanted over the cell. To keep leachate from escaping to the lakes or aquifer the cells will be lined with a polyvinyl chloride (PVC) liner is 20 mils thick manufactured by B. F. Goodrich. If the liner functions as proposed there will be no escape of leachate and hence no degradation of the waters. Petitioners contend that reasonable assurances have not been given that the PVC liner will adequately perform this function and this was the only real issue presented at the hearing. PVC liners for landfills have been in use for only bout 10 years. However, numerous tests have been conducted and, projecting the deterioration of the PVC observed during the test period to the estimated life of the landfill, leads to an expected liner life well beyond the life of leachate production in the landfill. To give PVC the flexibility and elasticity necessary to lay it over uneven surfaces in sheets, plasticizers are added to the PVC during the manufacturing process. These plasticizers will be released from the PVC if exposed to sunlight for an extended period. However, as proposed for use here, even if the liner was exposed to sunlight for the entire six months the cell will be open, or even for one year, no significant loss of plasticizer will result. Once the cell has been closed, no further dynamic stresses will be placed on the liner. Accordingly, even if the liner lost all of its plasticizer and thereby lost its elasticity and flexibility, it would remain impervious and prevent the pasage of leachate through the liner. To protect the liner from solid waste, trash, and equipment used in the cell to compress the solid waste, the liner will be covered with two feet of sand before any solid waste is placed in the cell. Each night the solid waste dumped that day will be covered with six inches of on-site earth material to deter flies, odors, etc. The two feet of sand cover will protect the liner from puncture by solid waste or equipment. The liner will be placed on a tight slope with a sump provided near the low end of each cell from whence leachate will be pumped from the cell and treated, if necessary. Additionally, vents will be installed to exhaust gases from the cell once it is closed. Monitoring wells will be placed around the land fill to detect if leachate is escaping from the site. These wells would allow detection of escaping leachate before it could progress to the natural water bodies in the general vicinity. The three to one slope proposed for the sides of the landfill will result in some movement of free sand resting on the liner along the sides and could bare the liner. To insure there will be a minimum of two feet of soil between the fill material and the liner the cell will not be filled completely to the side of the liner to fill in the space left between the garbage and the side wall each day when the material dumped that day is covered. Hazardous wastes will not be allowed at the site. The site will be enclosed and have an attendant on duty at all times it is opened to receive solid waste. Public access will be restricted and the attendant on duty will monitor the waste dumped in the cell. Household wastes will be accepted and these may include small quantities of paints, insecticides and other material that in large quantities would be considered hazardous. The sand over the liner, the pumping out of the leachate and overall operation of the landfill are adequate to protect against these small amounts of hazardous materials. Bay County proposes to use an existing disposal site to dump tree and hedge trimmings and may provide a place to dump this woody trash at the proposed site other than in the cells. This will increase the capacity of the cells for solid waste and diminish the possibility of damage to the liner by woody products. The only credible evidence submitted regarding the availability of alternate sited for the proposed landfill was that other areas further south were investigated and were unacceptable because the groundwater table was above the bottom of the proposed cells. This would result in dumping solid waster directly into the water table, and is unaceptable. Petitioner's principal contention is that there has been insufficient experience with PVC liners and the tests that have been conducted were not sufficiently rigorous or extensive to provide assurances that leachate would no escape from the site and contaminate the waters of the State. Petitioners also contend that joining of sections of PVC in field, which will be necessary to cover that bottom of the cells (because a liner large enough to cover the bottom of one cell would be too large and heavy to handle), would also create unacceptable risks in the making of these "field seams". Bay County has arranged for the manufacturer of the PVC to provide personnel to supervise the "field seaming" of the sections of the PVC. These seams do not need to be wrinkle-free and no particular problem with respect to joining sections of PVC liner so as to make it watertight was shown. The tests conducted by the Environmental Protection Agency on PVC liners have been ongoing for nearly ten years. None of these tests to date show any reason to question the effectiveness of a PVC liner properly installed to provide an impermeable barrier to leachate in a sanitary landfill. Petitioners also object to the use of cover material proposed by Bay County when a cell is closed. The soil analysis submitted with the application for the cover proposed does not have a high clay content and is more permeable than would be desired. At the hearing, Bay County officials testified they would use a more impermeable soil to cover the cells. Failure to do so would increase the amount of water from rainfall that would penetrate the cell, thereby increasing the quantity of leachate to be pumped from the sump. This would increase the maintenance cost of the landfill to the point it would be uneconomical not to put a water-repellant cover on the cell when it is closed. No evidence was presented that the formation of additional leachate would increase the risk of leachate escaping from the cell.
Conclusions Having considered the Recommended Order, including the Findings of Fact and Conclusions of Law, Petitioners' Exceptions, and Respondent's Response to Petitioners' Exceptions, it is, therefore: ORDERED that the Hearing Officer's Findings of Fact are adopted; his Conclusions of Law and Recommended Order, to the extent that they are consistent with this Final Order, are adopted; and ORDERED that the permit reflected in the Notice of Intent issued by the Department on May 16, 1980, be issued with the following additional conditions: The applicant shall notify the Department at least on week in advance of when the P.V.C. is to be installed and allow for on-site inspection of its installation by Department personnel. No operation permit will be issued unless the applicant has shown reasonable assurances that the P.V.C. has been properly installed and all other applicable rules of the Department and the applicable Florida Statutes have been complied with. Any operation permit issued shall be for only one cell and no permit for subsequent cells shall be approved in accordance with 2. above without a showing of proper operation for the previous cells. The final cover material for each cell shall be clay, substantially clay or other impermeable material. Any DER permits for this site shall only be valid until 24 months from the date of this order. ORDERED that the country shall submit within thirty days a plan with schedule by which this landfill site will be phased out in 24 months, which shall include selection of alternate acceptable sites or the implementation of a resource recovery program in accordance with 17-7, Part II, Florida Administrative Code. DONE AND ORDERED in Tallahassee, Leon County, Florida, this 22nd day of December, 1980. JACOB D. VARN, Secretary Twin Towers Office Building 2600 Blair Stone Road Tallahassee, Florida 32301 (904) 488-9675 Filed with the Clerk of the Division of Administrative Hearings this 22nd day of December, 1980. CERTIFICATE OF SERVICE I HEREBY CERTIFY that a true copy of the foregoing "Final Order" has been furnished by United States Mail to Kenneth F. Hoffman, Esquire, Oertel and Laramore, P.A., 646 Lewis State Bank Building, Tallahassee, Florida 32302, Les W. Burke, Esquire, County Attorney, Bay County, Post Office Box 1818, Panama City, Florida 32401, and K.N. Ayers, Hearing Officer, Division of Administrative Hearings, Collins Building, Room 101, Tallahassee, Florida 32301, this 22nd day of December, 1980. DOUGLAS H. MacLAUGHLIN Assistant General Counsel State of Florida Department of Environmental Regulation Twin Towers Office Building 2600 Blair Stone Road Tallahassee, Florida 32301 (904) 488-9730
The Issue The issues for determination in this matter are: (1) whether Petitioner, MW Horticulture Recycling Facility, Inc. (MW), is entitled to renewal of its Yard Trash Transfer Station or Solid Waste Organics Recycling Facility registration; (2) whether Petitioner MW is an irresponsible applicant; and (3) whether Petitioner MW Horticulture Recycling of North Fort Myers, Inc. (MW-NFM), is entitled to renewal of its Yard Trash Transfer Station or Solid Waste Organics Recycling Facility registration.
Findings Of Fact The following Findings of Fact are based on the stipulations of the parties and the evidence adduced at the final hearing. The Parties and the Registration Denials Petitioner MW is a Florida corporation that operates an SOPF located at 6290 Thomas Road, Fort Myers, Lee County, Florida. The site is commonly referred to as the "South Yard." Petitioner MW-NFM is a Florida corporation that operates an SOPF located at 17560 East Street, North Fort Myers, Lee County, Florida. The site is commonly referred to as the "North Yard." The Department is the administrative agency of the state statutorily charged with, among other things, protecting Florida's air and water resources. The Department administers and enforces certain provisions of part IV of chapter 403, Florida Statutes, and the rules promulgated thereunder in Florida Administrative Code Chapters 62-701 and 62-709. Pursuant to that authority, the Department determines whether to allow SOPFs to annually register in lieu of obtaining a solid waste management facility permit. On April 25, 2019, Petitioner MW submitted its application for registration renewal for the South Yard. On August 22, 2019, the Department issued a notice of denial. The listed reasons for denial focused on non-compliance with orders for corrective action in a Consent Order (Order) between Petitioner MW and the Department entered on February 22, 2019. The Order was entered to resolve outstanding violations in a Notice of Violation, Orders for Corrective Action and Administrative Penalty Assessment (NOV), issued on November 20, 2018. The notice of denial stated that, as of August 9, 2019, Petitioner MW had not completed the following corrective actions of the Order by the specified timeframes: (a) within 90 days of the effective date of this Order, Respondent shall remove all processed or unprocessed material (yard trash) from the Seminole Gulf Railway Right of Way and the swale along Old US 41 and establish a 20 foot wide all-weather access road, around the entire perimeter of the site; (b) within 90 days of the effective date of this Order, Respondent shall reduce the height of the piles to a height that the facility’s equipment can reach without driving (mechanically compacting) onto the processed or unprocessed material; and (c) within 90 days of the effective date of this Order, Respondent shall have all the processed and unprocessed material be no more than 50 feet from access by motorized firefighting equipment. The notice of denial also stated that when Department staff conducted compliance visits on April 29, 2019, June 27, 2019, July 7, 2019, and July 18, 2019, the following outstanding violations were documented: (a) unauthorized open burning of yard waste; (b) unauthorized mechanical compaction of processed and unprocessed material; (c) an all-weather access road, at least 20 feet wide, around the perimeter of the Facility has not been maintained and yard trash has been stored or deposited within the all-weather access road; and (d) yard trash is being stored more than 50 feet from access by motorized firefighting equipment. On April 25, 2019, Petitioner MW-NFM submitted its application for registration renewal for the North Yard. On August 22, 2019, the Department issued a notice of denial. The notice of denial stated that compliance and site observation visits were conducted on July 9, 2019, July 30, 2019, August 1 and 2, 2019, and the following non-compliance issues were documented: (a) unauthorized open burning; (b) unauthorized mechanical compaction of processed and unprocessed material; (c) yard trash received has been stored or disposed of within 50 feet of a body of water; and (d) yard trash received is not being size-reduced or removed, and most of the unprocessed yard trash has been onsite for more than six months. The notice of denial also stated that on March 27, 2018, May 10, 2018, and October 3, 2018, Department staff conducted inspections of the North Yard. A Warning Letter was issued on November 2, 2018. The Warning Letter noted the following violations: (1) unauthorized burning of solid waste; (2) the absence of the required 20-foot-wide all-weather perimeter access road along the southern unprocessed yard trash debris pile; (3) inadequate access for motorized firefighting equipment around the southern unprocessed yard trash debris pile (lake pile); (4) the lake pile not size-reduced or removed within six months; (5) mechanical compaction of processed and unprocessed material by heavy equipment; and (6) yard trash storage setbacks from wetlands not maintained. Petitioners' SOPFs The North Yard is located in North Fort Myers and is bound by the southbound lanes of Interstate 75 to the east and a lake to the west. The South Yard is slightly larger than the North Yard and abuts Thomas Road to the west and a railroad owned and operated by the Seminole Gulf Railway Company to the east. Petitioners' facilities accept vegetative waste and yard trash (material) from the public in exchange for a disposal fee before processing and size-reducing the material into retail products such as organic compost, topsoil, and mulch. The unprocessed material is staged in various piles generally according to waste type until it can be processed by grinding or screening. As of the date of the final hearing, both the North Yard and the South Yard were completely full of large, tall, and long piles of processed and unprocessed material except for a perimeter roadway around each site and paths that meander between the piles themselves. As the material in the piles decomposes, heat is produced from the respiration and metabolization of organic matter. This heat ignites the dry material and can cause substantial fires. Both the North Yard and South Yard are susceptible to fires caused by spontaneous combustion as a result of their normal operations of collecting and stockpiling organic waste. Fires Although spontaneous combustion is an inherent risk with SOPFs, the evidence at the hearing established that the material at Petitioners' facilities catches fire at an abnormally high rate as a result of poor pile management. Piles need to be turned and wetted to keep down incidents of spontaneous combustion. Monitoring temperatures, rotating the piles, and removing the material at a faster rate would help reduce the incidence of fires. Large piles with no extra land space cannot be managed in a way "to aerate and keep the temperatures at a level where you're not going to have spontaneous combustion." See Tr. Vol. I, pg. 32. Fire Marshal Steve Lennon of San Carlos Park Fire and Rescue regarded the South Yard as a fire hazard compared to other similar sites in his district. He testified that the pile heights, widths, and lengths at the South Yard are not in compliance with applicable fire-code size requirements. He also testified that if the pile sizes were in compliance, Petitioner MW would not have to put their motorized firefighting equipment on top of the piles "because [they] would be able to reach it from the ground." See Tr. Vol. I, pg. 41. As of the date of the hearing, San Carlos Park Fire and Rescue had responded to 43 active fire calls at the South Yard in the last two years, and three times in 2020 alone. In 2018, the active fire calls at the South Yard were multi-day suppression operations. In 2019, the active fire calls were mostly hotspots and flare-ups. Captain Doug Underwood of the Bayshore Fire Rescue and Protection Service District (Bayshore Fire District) testified that his department had responded to approximately 75 fire calls at the North Yard in the last two years. The most common cause of the fires was spontaneous combustion. The piles were not in compliance from a size standpoint. Captain Underwood testified that the majority of the 75 calls were to the lake pile at the North Yard. See Tr. Vol. I, pg. 59. The lake pile was a temporary site on the southern end of the lake that borders the North Yard, and for most of 2018 and 2019, contained debris from Hurricane Irma.1 The lake pile temporary site was completely cleared by the time of the hearing. Captain Underwood testified that in 2018, he recommended to Petitioners that they engage the services of an expert fire engineer. Petitioners engaged Jeff Collins who met with Captain Underwood on multiple occasions. They discussed how to address fires and hotspots and that the facilities should have a written fire protection safety and mitigation plan. Such a plan was created and Captain Underwood was satisfied with its provisions. Although the lake pile temporary site was completely cleared by the time of the hearing, it was not an entirely voluntary effort on Petitioners' part. Captain Underwood testified that Petitioners' "initial plan of action was to leave it there for . . . eight months or greater, depending on the time frame needed to have the product decompose and cool down to a temperature that they could remove it." See Tr. Vol. I, pg. 83. It took Lee County code enforcement efforts "to compel MW to remove this material off-site as quickly as possible." See Tr. Vol. I, pg. 82. 1 Throughout this proceeding, the lake pile was referred to by various names in testimony and exhibits, such as, "southern unprocessed yard trash debris pile," "lake yard," "trac[t] D," and "temporary site." As recently as February 12, 2020, a large pile of hardwood, green waste, and compost at the North Yard caught fire as a result of spontaneous combustion. The size of the fire was so large and hot that the Bayshore Fire District could not safely extinguish the fire with water or equipment, and allowed it to free-burn openly for 24 hours in order to reduce some of the fuel. The fire produced smoke that drifted across the travel lanes of Interstate 75. The free-burn allowed the pile to reduce in size "down to the abilities of the district and the equipment on-site." See Tr. Vol. I, pgs. 51-52. Captain Underwood testified that "once we started putting water on it, then the MW crews with their heavy equipment covered the rest of the smoldering areas with dirt." See Tr. Vol. I, pg. 56. Rule Violations By Petitioners' own admission, the facilities have repeatedly violated applicable Department rules throughout the course of their operations over the last two and one-half years. The most pertinent of these violations center around the Department's standards for fire protection and control to deal with accidental burning of solid waste at SOPFs. Renee Kwiat, the Department's expert, testified that the Department cited the South Yard nine times for failing to maintain a 20-foot all-weather access road. The South Yard consistently violated the requirement to maintain processed and unprocessed material within 50 feet of access by motorized firefighting equipment, and the North Yard has violated this requirement twice. The North Yard consistently violated the requirement to size-reduce or remove the lake pile material within six months. Both the North Yard and South Yard were cited multiple times for mechanically compacting processed and unprocessed material. Following a period of noncompliance and nearly 11 months of compliance assistance at the South Yard, Petitioner MW told the Department it would resolve all outstanding violations by July 1, 2018. The July 1, 2018, deadline passed and on October 18, 2018, the Department proposed a consent order to resolve the violations at the South Yard. However, Petitioner MW did not respond. On November 20, 2018, the Department issued the NOV to Petitioner MW regarding the South Yard. The violations included failure to maintain a 20-foot all-weather access road around the perimeter of the site, failure to ensure access by motorized firefighting equipment, mechanical compaction, and the unauthorized open burning of solid waste. On February 22, 2019, the Department executed the Order with Petitioner MW to resolve outstanding violations in the NOV. By signing the Order, Petitioner MW agreed to undertake the listed corrective actions within the stated time frames. Compliance visits to the South Yard on April 29, 2019, June 7, 2019, June 27, 2019, July 18, 2019, and August 22, 2019, documented that many violations outlined above were still present at the site. At the time of the final hearing, the preponderance of the evidence established that none of the time periods in the Order were met. The preponderance of the evidence established the violations listed in paragraphs 5 and 6 above. At the time of the final hearing, the preponderance of the evidence established that Petitioner MW still had not reduced the height of the piles such that their equipment could reach the tops of the piles without driving (mechanically compacting) onto the processed or unprocessed material. Thus, all the processed and unprocessed material was not more than 50 feet from access by motorized firefighting equipment. At the time of the final hearing, the preponderance of the evidence established more incidents of unauthorized open-burning of solid waste; and continuing unauthorized mechanical compaction of processed and unprocessed material. The evidence also established that the South Yard does not encroach on Seminole's real property interest. The Department did not issue an NOV for the North Yard. The preponderance of the evidence established that there were repeated rule violations at the North Yard. These violations formed the basis for denying the North Yard's registration as outlined in paragraph 8 above. The Department deferred to Lee County's enforcement action for violations of County rules as resolution of the violations of Department rules. At the time of the final hearing, however, the preponderance of the evidence established more incidents of unauthorized open burning of solid waste, and continuing unauthorized mechanical compaction of processed and unprocessed material at the North Yard. Petitioners' Response and Explanation Approximately two and one-half years before the date of the hearing in this case, Hurricane Irma, a category four hurricane, made landfall in the state of Florida. It was September 10, 2017, and Hurricane Irma significantly impacted the southwest coast of Florida, where Petitioners' facilities are located. Hurricane Irma caused extensive damage, including the destruction of trees, vegetation, and other horticultural waste which required disposal. Massive amounts of such yard waste and horticultural debris were deposited on roadways and streets throughout Lee County, creating a significant issue that needed to be addressed by local governments, and state and federal agencies. Due to the threat posed by Hurricane Irma, the state of Florida declared a state of emergency on September 4, 2017, for every county in Florida. This state of emergency was subsequently extended to approximately March 31, 2019, for certain counties, including Lee County, due to the damage caused by Hurricane Irma. An overwhelming volume of material needed to be processed and disposed of following Hurricane Irma. The Petitioners' facilities were inundated with material brought there by Lee County, the Florida Department of Transportation, the Federal Emergency Management Agency, and others. After Hurricane Irma, haulers took considerable time just to get the materials off the streets, and processors like the Petitioners, ran out of space because there was limited space permitted at the time. As a result, these materials stacked up and had to be managed over time at facilities, including Petitioners' facilities. To accommodate the material, Petitioner MW-NFM added the temporary site that was labeled the "lake pile" or "southern unprocessed yard trash debris pile" in Department inspection and compliance reports of the North Yard. In order to address the volume of material on the site after Hurricane Irma, Petitioner MW-NFM requested approval from the Department to move the material off-site to other locations in order to reduce the size of the piles at the North Yard's lake pile. For reasons that remain unclear, such authorization was not obtained, and Petitioner MW-NFM believes that this would have size-reduced the piles and prevented accumulation of material in violation of Department rules. In order to process the North Yard's lake pile and move it off-site more quickly, Petitioner MW-NFM requested permission from Lee County and the Department to grind unprocessed material on site, which would have size-reduced the lake pile and allowed it to be moved off-site more quickly. Because existing zoning did not authorize this grinding, the request was denied in spite of the fact that a state of emergency had been declared which Petitioner MW-NFM believes would have permitted such an activity. This further hampered Petitioner MW-NFM's ability to size-reduce the lake pile leading to more issues with hot spots and fires. Because the material was of such volume, and was decomposing, a major fire erupted in 2018 at the North Yard's lake pile. Petitioners' fire safety engineer, Jeff Collins, wrote reports to address this issue and recommended to the local fire department that the pile be smothered in dirt until the fire was extinguished. The request was denied by the Bayshore Fire District, which instead directed that Petitioners break into the pile in order to extinguish the fire. When Petitioners did so, the piles immediately erupted into flames as predicted by Petitioners' fire safety engineer. Moving the smoldering material to the South Yard also led to fires at the South Yard. In spite of the large volume of material at the North Yard's lake pile, Petitioners made steady progress in size reducing the material and moving it off-site. However, as of the date of the final hearing, both the North Yard and the South Yard were still completely full of large, tall, and long piles of processed and unprocessed material except for a perimeter roadway around each site and paths that meandered between the piles themselves. Mechanical Compaction Each party presented testimony regarding the question of whether Petitioners' facilities violated the prohibition that any processed or unprocessed material shall not be mechanically compacted. The parties disagreed over how the prohibition against mechanical compaction was applied to yard trash transfer facilities. In March of 2018, Petitioners' representative, Denise Houghtaling, wrote an email to the Department requesting clarification of the Department's definition of "mechanical compaction" because it is undefined in the rules. On April 3, 2018, Lauren O' Connor, a government operations consultant for the Department's Division of Solid Waste Management, responded to Petitioners' request. The response stated that the Department interprets "mechanical compaction" as the use of heavy equipment over processed or unprocessed material that increases the density of waste material stored. Mechanical compaction is authorized at permitted disposal sites and waste processing facilities, but is not permissible under a registration for a yard trash transfer facility.2 Mechanical compaction contributes to spontaneous combustion fires, which is the primary reason for its prohibition at yard trash transfer facilities. Petitioners' interpretation of mechanical compaction as running over material in "stages" or "lifts" was not supported by their expert witnesses. Both David Hill and Jeff Collins agreed with the Department's interpretation that operating heavy equipment on piles of material is mechanical compaction. The persuasive and credible evidence established that Petitioners mechanically compact material at their facilities. Mechanical compaction was apparent at both sites by either direct observation of equipment on the piles of material, or by observation of paths worn into the material by regular and repeated trips. Department personnel observed evidence of mechanical compaction on eight separate inspections between December 2017 and January 2019. Additional compaction was observed at the South Yard on June 7, 2019, and in aerial surveillance footage from August 28, 2019, September 5, 2019, January 30, 2020, and February 12, 2020. Petitioners' fire safety engineer, who assisted them at the North Yard lake pile, testified that the fire code required access ramps or pathways for equipment onto the piles in order to suppress or prevent fire. However, Captain Underwood and Fire Marshal Lennon testified they do not and have never required Petitioners to maintain such access ramps or paths on the piles. The fire code provision cited by Petitioners' expert does not apply to their piles. See Tr. Vol. II, pgs. 78-80. In addition, Fire Marshal Lennon testified that placing firefighting equipment on top of piles is not an acceptable and safe way to fight fires at the site by his fire department. 2 Rule 62-701.710 prohibits the operation of a waste processing facility without a permit issued by the Department. See also Fla. Admin. Code R. 62-701.803(4). Rule 62- 701.320(16)(b) contemplates the availability of equipment for excavating, spreading, compacting, and covering waste at a permitted solid waste disposal facility. Despite receiving clarification from the Department in April of 2018, Petitioners choose to ignore the Department's prohibition against mechanically compacting unprocessed or processed material piles. In addition, the persuasive and credible evidence suggests that Petitioners blanket the piles with dirt to both suppress fires and accommodate the "access roads" or "paths" on the piles.3 Ultimate findings The persuasive and credible evidence established the violations cited in the Department's registration denial for the North Yard. The Department also established by a preponderance of the evidence the alleged subsequent violations through to the time of the final hearing. The persuasive and credible evidence established the violations cited in the Department's registration denial for the South Yard. The Department also established by a preponderance of the evidence the alleged subsequent violations through to the time of the final hearing. The persuasive and credible evidence established that Petitioners did not consistently comply with Department rules over the two and one-half years prior to the final hearing. However, Petitioners established through persuasive and credible evidence that because of the impacts of Hurricane Irma, and the subsequent circumstances, they could not have reasonably prevented the violations. The totality of the evidence does not justify labeling the Petitioners as irresponsible applicants under the relevant statute and Department rule. However, Petitioners did not provide reasonable assurances that they would comply with Department standards for annual registration of yard trash transfer facilities. 3 The evidence suggests that Petitioners may prefer to follow the advice of their hired experts with regard to the practice of mechanical compaction and blanketing the piles with dirt. See, e.g., Petitioners' Ex. 16. However, the evidence suggests that the experts' level of experience is with large commercial composting and recycling facilities that may be regulated by solid waste management facility permits and not simple annual registrations.
Recommendation Based on the foregoing Findings of Fact and Conclusions of Law, it is RECOMMENDED that the Department of Environmental Protection enter a final order denying Petitioners' annual registration renewal applications for the North Yard and South Yard. DONE AND ENTERED this this 17th day of September, 2020, in Tallahassee, Leon County, Florida. S FRANCINE M. FFOLKES 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 17th day of September, 2020. COPIES FURNISHED: Clayton W. Crevasse, Esquire Roetzel & Andress 2320 First Street, Suite 1000 Fort Myers, Florida 33901 (eServed) Sarah E. Spector, Esquire Roetzel & Andress 2320 First Street, Suite 1000 Fort Myers, Florida 33901 (eServed) Carson Zimmer, Esquire Department of Environmental Protection Mail Station 49 3900 Commonwealth Boulevard Tallahassee, Florida 32399-3000 (eServed) Lea Crandall, Agency Clerk Department of Environmental Protection Douglas Building, Mail Station 35 3900 Commonwealth Boulevard Tallahassee, Florida 32399-3000 (eServed) Justin G. Wolfe, General Counsel Department of Environmental Protection Legal Department, Suite 1051-J Douglas Building, Mail Station 35 3900 Commonwealth Boulevard Tallahassee, Florida 32399-3000 (eServed) Noah Valenstein, Secretary Department of Environmental Protection Douglas Building 3900 Commonwealth Boulevard Tallahassee, Florida 32399-3000 (eServed)
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
