The Issue The issue to be determined in this proceeding is whether Angelo's Aggregate Materials, LTD ("Angelo's") is entitled to permits from the Department of Environmental Protection ("Department") to construct and operate a Class I landfill in Pasco County.
Findings Of Fact The Parties The Department is the state agency with the power and duty under chapter 403, Florida Statutes, to review and take action on applications for permits to construct and operate solid waste management facilities, including landfills. Angelo's is a Florida limited partnership authorized to conduct business under the name Angelo's Recycled Materials. Angelo's filed the permit applications which are the subject of this proceeding. Angelo's owns the property on which the proposed landfill would be constructed and operated. Crystal Springs Preserve is a Florida corporation that owns approximately 525 acres in Pasco County, Florida on which is located Crystal Springs, a second magnitude spring that flows into the Hillsborough River. The property is about 10 miles south of Angelo's proposed landfill site. Crystal Springs Preserve's primary business activities are selling spring water for bottling for human consumption and operating an environmental education center that focuses on Crystal Springs and the Hillsborough River. Crystal Springs Preserve hosts approximately 50,000 visitors annually at the environmental education center. Crystal Springs Preserve holds a water use permit which authorizes it to withdraw up to 756,893 gallons of water per day (annual average) from Crystal Springs for production of bottled water. The water is transported about three miles to a water bottling facility operated by Nestlé. Nestlé is a private corporation engaged in the business of bottling and selling spring water. Nestlé purchases spring water from Crystal Springs Preserve. Nestlé's "Zephyrhills Spring Water" brand is composed of approximately 90 percent Crystal Springs water and 10 percent Madison Blue Spring water. The only water treatment applied by Nestlé is filtering the water to remove gross contaminants and passing the water through ultraviolet light or ozone to kill any potential bacteria before bottling. Nestlé has established "norms" for its spring water and would not be able to use the water from Crystal Springs if its chemical composition varied significantly from the norms. WRB is a Florida corporation that owns 1,866 acres in Pasco County known as Boarshead Ranch. Boarshead Ranch is adjacent to the east and south of Angelo’s property and is approximately 3,000 feet from the proposed landfill at its closest point. Boarshead Ranch is currently being used for agricultural, recreational, residential, and conservation purposes, including wildlife management. Nearly all of Boarshead Ranch is subject to a conservation easement held by the Southwest Florida Water Management District (SWFWMD). The conservation easement allows WRB to continue agricultural operations. Numerous agricultural water wells are located on Boarshead Ranch. WRB holds a water use permit which authorizes the withdrawal of 820,000 gallons per day (gpd) (annual average) for a number of uses, including production of agricultural products, animal drinking water, and personal use. The City of Zephyrhills is located in Pasco County and is a municipal corporation. Zephyrhills' water service area encompasses Zephyrhills and portions of Pasco County. Zephyrhills owns, operates, and maintains a water distribution and transmission system of pipes, pump stations, and storage tanks within the City and its service area. Zephyrhills holds a water use permit which authorizes nine potable water supply wells with a combined withdrawal of 2.9 million gallons per day ("mgd") (annual average). Zephyrhills has two new production wells located about two miles southeast of the proposed landfill. The City of Tampa owns and operates the David L. Tippin Water Treatment Plant, the Hillsborough River dam, and the City of Tampa reservoir on the Hillsborough River. Flows from Crystal Springs make up a substantial amount of the water in the Hillsborough River, especially during drought conditions when the spring flow accounts for about 50 percent of the flow. The City of Tampa holds a water use permit which authorizes the withdrawal 82 mgd (annual average). The City of Tampa owns, operates, and maintains a water distribution and transmission system of pipes, pump stations, and storage tanks within the City and its service area. Carl Roth, Marvin Hall, and Louis Potenziano own property in Pasco County near the proposed landfill site. Roth's property is 3.5 miles west of the proposed landfill site; Hall's property is located approximately one mile southwest of the site; and Potenziano's property is 1.6 miles to the south/southeast of the site. Roth, Hall, and Potenziano have water wells on their properties. The record does not establish that John Floyd owns property in the area. Floyd and Associates, Inc., owns about 55 acres in the area and holds a water use permit authorizing the withdrawal of water for agricultural uses. The Stipulated Agreement On March 1, 2010, Angelo's filed with DOAH a "Stipulated Agreement" signed by all parties. The Stipulated Agreement states in relevant part: Angelo's shall provide a final design, revised complete permit application and site investigation (referred to jointly as "Revised Submittal") to DEP with copies to all Parties and DEP shall make a completeness determination prior to this proceeding being set for a new final hearing date. * * * Angelo's shall not revise its permit application or supporting information beyond the Revised Submittal prior to or during the final hearing except in response to issues raised by DEP. It appears that the Aligned Parties did not remember the Stipulated Agreement until the commencement of the final hearing. They did not object before then to any of the evidence which Angelo's had prepared or intended to prepare for hearing on the basis that it violated the terms of the Stipulated Agreement. At the commencement of the hearing, Nestlé argued that the Stipulated Agreement barred Angelo's from revising its application or presenting new support for its project at the final hearing. The Stipulated Agreement is unusual and the necessity for Angelo's to make any concessions to the Aligned Parties in order to obtain their agreement to an abeyance was not explained. Allowing an applicant time to amend a permit application is usually good cause for an abeyance. The Stipulated Agreement allowed Angelo's to continue to respond to issues raised by the Department. Angelo's contends that all of the evidence it presented at the final hearing qualifies as a response to issues raised by the Department. The Proposed Landfill Angelo's applied to construct and operate a Class I landfill with associated buildings and leachate holding tanks. Application No. 22913-001-SC/01 corresponds to the construction permit application and Application No. 22913-001-SO/01 corresponds to the operation permit application. A Class I landfill is a landfill authorized to receive Class I waste, which is solid waste from households and businesses. Class I waste does not include hazardous waste, yard waste, or construction and demolition debris. See Fla. Admin. Code R. 62-701.200(13) and (14). The proposed landfill would be approximately 30 acres in size. It is part of a 1,020-acre parcel owned by Angelo's that is west of County Road 35 and south of Enterprise Road in Pasco County. The site is currently leased for cattle grazing and hay and sod production. There are also spray fields, orange groves, and a pond on the 1,020-acre parcel. Angelo's would construct the landfill by first clearing the 30-acre site. It would then excavate and fill to create the design subgrade or floor of the landfill with slopes required for the liner system. The subgrade would be compacted with a vibratory roller. After the subgrade compaction, the grouting plan would be implemented. The grouting plan calls for grouting 39 subsurface locations on the site that have voids, loose soils, or other unstable characteristics. A liner system would be installed after the grouting is completed and the subgrade is finished. From the bottom upward, the liner system would begin with a 12-inch layer of clay, over which a reinforcement geotextile would be installed, followed by another 12-inch layer of clay. This reinforcement geotextile is in addition to the double liner system required by Department rule. Its purpose is to maintain the integrity of the liner system in the event that a sinkhole occurs beneath the landfill. Installed above the reinforcement geotextile and clay layer would be a 60-millimeter high-density polyethylene ("HDPE") geomembrane, followed by a HDPE drainage net. These last two components comprise the secondary leachate collection system. Above the HDPE drainage net would be the primary leachate collection system, consisting of another 60-millimeter HDPE geomembrane and HDPE drainage net, followed by a geotextile, then a 12-inch sand layer for drainage, and an additional 12-inch sand layer for protection against puncture of the HDPE liner. A 48-inch layer of selected waste, free of items that could puncture the liner, would be the first waste placed over the primary leachate collection system. "Leachate" is "liquid that has passed through or merged from solid waste and may contain soluble, suspended, or miscible materials." See Fla. Admin. Code R. 62-701.200(66). Leachate would be collected through a system of perforated pipes that empty into a sloping trench with a leachate collection pipe. The leachate collection pipe would run down the center of the landfill to the lowest point where a pump would send the collected leachate through a force main 0.25 miles to storage tanks. Five above-ground storage tanks would be installed on a concrete pad with capacity to store 90,000 gallons of leachate. The stored leachate would be periodically transported to an offsite location, such as a wastewater treatment facility, for disposal. Sinkholes and Karst The terms "sinkhole" and "sinkhole activity" are not defined by Department rule, but the statutory definitions in chapter 627, a chapter dealing with insurance coverage for homes and other buildings, are generally consistent with the scientific meanings of these terms. The term "sinkhole" is defined in section 627.706(2)(h) as: a landform created by subsidence of soil, sediment, or rock as underlying strata are dissolved by groundwater. A sinkhole forms by collapse into subterranean voids created by dissolution of limestone or dolostone or by subsidence as these strata are dissolved. The term "sinkhole activity" is defined in section 627.706(2)(i) as: settlement or systematic weakening of the earth supporting the covered building only if the settlement or systematic weakening results from contemporaneous movement or raveling of soils, sediments, or rock materials into subterranean voids created by the effect of water on a limestone or similar rock formation. Sinkholes occur throughout Florida. There have been many reported and confirmed sinkholes in Pasco County. The more common type of sinkhole that has occurred on the Brooksville Ridge is a "cover subsidence" sinkhole, which is caused by voids in the limestone and the downward movement--"raveling"--of overlying soils into the cavity. Eventually, the loss of soils in the raveling zone will propagate upward until the soils at the ground surface also move downward and a depression is formed at the surface. Cover subsidence sinkholes develop slowly and are usually small, less than ten feet in diameter. Less common are "cover collapse" sinkholes, which can form in a matter of days or hours as the result of the collapse of the "roof" of a dissolved cavity in the limestone. These sinkholes are usually large and deep. The occurrence of a sinkhole does not always mean that areas near the sinkhole are unstable. However, the occurrence of a sinkhole is reasonable cause for concern about the stability of nearby areas and a reasonable basis for the Department to require thorough geologic investigations. "Karst" refers to limestone that is undergoing dissolution and it is common in Florida. A sinkhole forms in karst. "Epikarst" is limestone that was weathered while exposed above sea level millions of years ago before being submerged again. It is generally softer and more permeable than unweathered limestone. "Paleokarst" refers to karst that is very old in geologic time. Paleosinks are old sinkhole features in the paleokarst. A paleosink may no longer be unstable because it has been filled in for thousands or millions of years. A "lineament," or a "photolineament," is a relatively straight line seen in the topography or aerial photographs of the ground surface in an area. It might be defined by soil color, sloughs, ponds, wetlands, or other land features that follow a linear path. Lineaments are sometimes, but not always, associated with subsurface fractures in the bedrock where one would expect to also find active karst, sinkholes, and relatively rapid groundwater flow. Even where there is no lineament, there can be fractures in limestone that, when extensive enough, will allow for "fractured," "preferential," or "conduit flow" of groundwater. Fractured flow can occur in a small area or may go on for miles. Springs in Florida are usually associated with fractured flow or conduit flow that allows groundwater to move through the aquifer a long distance relatively rapidly, in weeks rather than decades. Geotechnical Investigation The Department's rules require subsurface conditions to be explored and described, including soil stratigraphy, soft ground, lineaments, and unstable areas, but the rules do not require the application of any particular geologic testing technique. An applicant's testing program is primarily a function of the professional judgment of the applicant’s geologist in cooperation with Department staff. The amount of geological testing done by Angelo's during its initial testing was similar to what was done for recent landfill applications. Angelo's conducted additional testing to respond to Department concerns and to prepare for the final hearing in this case, making the total amount of testing at Angelo's proposed site more extensive than is usual for a proposed landfill. The geologic investigation conducted by Angelo's experts to determine subsurface features, including any sinkholes, employed several technologies. Split Spoon Penetrometer Test (SPT) or SPT borings were drilled with a drill rig that advances a split spoon sampler into the ground with a 140 pound hammer. The hammer is dropped 30 inches and the number of blows required to drive the sampler each successive 12 inches is referred to as the "N" value and indicates soil strength and density. The higher the N value, the denser the soil. When the material is so dense the drill rod cannot (essentially) be hammered deeper, the N value is shown as "R," which stands for "refusal." SPT Bore logs also note any observed "weight of hammer," "weight of rod," or "loss of circulation." These terms describe areas where the drilling encounters very soft material or voids. Weight of rod, for example, means the weight of the drilling rod, by itself, with no hammer blow, was enough to cause the rod to fall deeper through the soil or rock. Cone Penetrometer Test ("CPT") borings were also conducted. CPT borings are relatively shallow, performed with a hand-held rod and special tip that the operator pushes into the ground. The CPT equipment continuously measures and records tip resistance and sleeve resistance as the rod moves downward through soils. It is helpful in some applications, but is less precise in determining soil type, strength, and compressibility than SPT borings and cannot be used to explore deep zones. Ground penetrating radar ("GPR") studies were used. GPR equipment transmits pulses of radio frequency waves into the ground. The manner in which the radio waves are reflected indicates the types of soil and rock encountered. It can also detect cavities and other features that would suggest karst activity. When the GPR identifies geologic features of interest, they can be further investigated with SPT borings. Another investigative tool used by Angelo's was Multiple Electrode Resistivity ("MER"). MER uses a grid of wires and electrodes and the equipment interprets the resistivity of electrical signals transmitted through the subsurface. MER data can be displayed in a two dimensional or three dimensional format, depending on the software program that is used to process the data. Like GPR, MER is useful for indentifying geologic features of interest that can be further explored with SPT borings. However, GPR generally has good resolution only near the ground surface, while MER has good resolution to a depth of 100 feet. The Regional Geology The proposed site is in a geologic transition zone on the eastern flank of a regional, geological feature known as the Brooksville Ridge. It is a transition zone for both the Suwannee Limestone and Hawthorn Group. The Brooksville Ridge was formed when it was part of the coastline. In its geologic past, the Brooksville Ridge experienced sea level changes, weathering, erosion of sediments, and beach reworking. The general layering of geologic features on the Brooksville Ridge, from the top down, begins with topsoil and a layer of sand. Under the sand layer is the Hawthorn Group, an older geologic layer consisting of a heterogeneous mix of limestone, clays, and sands which generally range in depth from slightly under 60 feet to 80 feet or more. It was formed by river and wind erosion, flushing, and re-deposition in a beach dune environment. Below the Hawthorn Group is the Suwannee Limestone Formation, which is present throughout eastern Pasco County. The upper surface of the Suwannee Limestone Formation is undulating, due to a gradual chemical weathering of its upper surface, representing a "paleokarst environment." Underlying the Suwannee Limestone Formation is the Ocala Limestone Formation. It extends throughout most of Florida. It is composed of nearly pure limestone and is considered the Floridan Aquifer. It extends across the site’s subsurface. Angelo's used the Florida Geologic Survey's data base to determine there are six sinkholes within five miles of the proposed landfill. A seventh sinkhole, not in the data base, is the 15- foot sinkhole at the Angelo's Enterprise Road Facility landfill, a Class III landfill (yard waste and construction and demolition debris) about a mile northwest of the proposed site. Angelo's contends that the sinkhole at its Class III landfill was "induced" during construction of the facility by the diversion of stormwater runoff to an area where overburden had been removed. The average diameter of the seven sinkholes is 11.9 feet. The Geology of the Proposed Site Rule 62-701.410(2)(c) requires a geotechnical site investigation and report, which shall: Explore and describe subsurface conditions including soil stratigraphy and ground water table conditions; Explore and address the presence of muck, previously filled areas, soft ground, lineaments, and sinkholes; Evaluate and address fault areas, seismic impact zones, and unstable areas as described in 40 C.F.R. 258.13, 258.14 and 258.15; Include estimates of the average and maximum high ground water table across the site; and Include a foundation analysis to determine the ability of the foundation to support the loads and stresses imposed by the landfill. It may include geotechnical measures necessary to modify the foundation to accommodate the imposed loads and stresses. The foundation shall be analyzed for short-term, end of construction, and long-term stability and settlement conditions. Considering the existing or proposed subgrade conditions and the landfill geometry, analysis shall include: Foundation bearing capacity; Subgrade settlements, both total and differential; and Subgrade slope stability. Angelo's conducted a geotechnical site investigation, but it was not adequate, as discussed below and in sections I. and J. The proposed landfill site is geologically complex, having features that are discontinuous horizontally and vertically. The site has karst features or areas where the limestone has dissolved. There is a clay layer in some areas, but it is not continuous and its depth and thickness vary. There are deposits of hard and soft sands at various depths. There are pinnacles of limestone surrounded by softer materials. Photographs from a quarry called the Vulcan Mine, located on the western flank of the Brooksville Ridge, show exposed features in the top 20 to 30 feet of the Suwannee Limestone in the region. The features at the Vulcan Mine are roughly similar to features at the Angelo's site. There are a number of shallow depressions on the surface of the ground on the Angelo's site. The origin and significance of these depressions was a matter of dispute. The Aligned Parties believe they represent sinkhole activity, but the evidence presented did not rise to the level of proof. However, Angelo's did not prove they were unassociated with geotechnical issues that could affect the proposed landfill. Angelo's offered no reasonable explanation for the depressions. Determining the exact cause of the depressions may not be possible even with more extensive investigation, but it was Angelo's responsibility as the permit applicant, pursuant to rule 62-701.410(2)(c), to make a greater effort to account for them. Angelo's initial permit application identified two intersecting lineaments on Angelo's property, based on aligned lowlands, enclosed valleys, and ponds. Angelo's contends the lineaments do not reflect an unstable subsurface or fractured limestone. The Aligned Parties contend that the lineaments are regional features and reflect fractures in the bedrock. They also contend that the onsite pond, which is located along the lineament, is an old sinkhole. The Aligned Parties did not prove the proposed landfill site is above an area of fractured bedrock, but the evidence presented by Angelo's was incomplete and insufficient to show there are no fractures. The limestone on the site was not adequately investigated for voids and fractures. Angelo's did not refute the possibility that the lineaments reflect a significant subsurface feature that could affect both site stability and groundwater movement. The Regional and Local Hydrogeology Rule 62-701.410(1) requires a hydrogeological investigation and site report, which shall: Define the landfill site geology and hydrology and its relationship to the local and regional hydrogeologic patterns including: Direction and rate of ground water and surface water flow, including seasonal variations; Background quality of ground water and surface water; Any on site hydraulic connections between aquifers; For all confining layers, semi-confining layers, and all aquifers below the landfill site that may be affected by the landfill, the porosity or effective porosity, horizontal and vertical permeabilities, and the depth to and lithology of the layers and aquifers; and Topography, soil types and characteristics, and surface water drainage systems of the site and surrounding the site. Include an inventory of all the public and private water wells within a one-mile radius of the proposed landfill site. The inventory shall include, where available: The approximate elevation of the top of the well casing and the depth of each well; The name of the owner, the age and usage of each well, and the estimated daily pumpage; and The stratigraphic unit screened, well construction technique, and static water levels of each well. Identify and locate any existing contaminated areas on the landfill site. Include a map showing the locations of all potable wells within 500 feet of the waste storage and disposal areas to demonstrate compliance with paragraph 62- 701.300(2)(b), F.A.C. Angelo's conducted a hydrogeological investigation, but it was not adequate, as discussed below. Angelo's and the Aligned Parties disputed the hydrogeological characteristics of the proposed landfill site and region. The principal disputes related to the direction and velocity of groundwater flow. Angelo's contends that groundwater flows from the landfill site to the west, making the proposed landfill site part of the Withlacoochee River groundwater basin. The Aligned Parties contend that groundwater flows south toward Crystal Springs and, therefore, the site is within the "springshed" of Crystal Springs. A United States Geological Survey map of the Crystal Springs springshed shows Angelo's proposed landfill site within the springshed. A springshed study done for SWFWMD also indicates the site is within the Crystal Springs springshed, but the District has not always been consistent in its statements about the groundwater basin boundaries in this area. A water chemistry analysis of the groundwater in the area of Angelo's proposed landfill indicates that the site is an area of higher recharge and within the Crystal Springs springshed. The springshed boundary can shift, depending on rainfall. Angelo's hydrogeological evidence was not sufficient to refute the reasonable possibility that the proposed landfill site is within the Crystal Springs springshed. Therefore, the Department's determination whether Angelo's has provided reasonable assurances must account for the threat of contamination to Crystal Springs and the other public and private water supply sources to the south. There are no creeks or streams and only a few lakes in the area between Crystal Springs and the Angelo's site. The absence of surface runoff features indicates it is an area of high recharge to the groundwater. Crystal Springs is in an area of conduit flow. The hydrologic investigation conducted by Angelo's was not thorough enough to characterize surficial aquifer flow and flow between aquifers. The preponderance of the evidence shows more groundwater recharge to the Floridan Aquifer in the area than estimated by Angelo's. Angelo's hydrogeological investigation was inadequate to refute the possibility of fractured flow or rapid groundwater movement at the proposed landfill site. Angelo's contends there is a continuous clay confining layer that would prevent contamination from moving into deep zones, but the preponderance of the evidence shows discontinuity in the clay and large variations in thickness and depth. The landfill's impermeable liner will impede water movement downward from the landfill, but groundwater will still recharge from outside the landfill to carry any contaminants deeper. If fractured flow or conduit flow extends south from the proposed landfill site, any leachate released into the groundwater beneath the landfill could travel rapidly toward the water supply sources of the City of Zephyrhills, Crystal Springs, Nestlé, and the City of Tampa. Whether the Proposed Landfill is in an Unstable Area Rule 62-701.200(2)(a) prohibits the storage or disposal of solid waste "[i]n an area where geological formations or other subsurface features will not provide support for the solid waste." However, the Department has adopted by reference a federal regulation, 40 C.F.R. 258.15, which allows a landfill to be constructed in a geologically unstable area if the permit applicant can demonstrate that engineering measures are incorporated into the design to ensure that the integrity of the landfill’s structural components "will not be disrupted." The parties presented evidence on many disputed issues of fact at the final hearing, but most of the case involved two ultimate questions: whether the proposed landfill site is unstable and, if so, whether Angelo's has proposed measures that would eliminate the unstable conditions and make the site suitable for a landfill. as: An "unstable area" is defined in 40 C.F.R. § 258.15 A location that is susceptible to natural or human-induced events or forces capable of impairing the integrity of some or all of the landfill structural components responsible for preventing releases from a landfill. Unstable areas can include poor foundation conditions, areas susceptible to mass movements, and Karst terrains. There is overwhelming evidence that the proposed landfill site is an unstable area. A considerable amount of evidence presented by Angelo's supports this finding. For example, Angelo's experts agreed there are loose soils, evidence of raveling, and sinkhole activity. These conditions make the site susceptible to natural or human-induced events or forces capable of impairing the integrity of some or all of the landfill structural components responsible for preventing releases from the proposed landfill. The Department's landfill permitting staff requested a sinkhole risk assessment from the Florida Geologic Survey ("FGS"). The State Geologist and Director of the FGS, Dr. Jonathan Arthur, believes the potential for sinkhole formation at the proposed site is moderately high to high. That potential is consistent with the characterization of the area as unstable. Whether the Proposed Engineering Measures Are Adequate Because the site is unstable, Angelo’s must demonstrate that engineering measures have been incorporated into the landfill's design to ensure that the integrity of its structural components will not be disrupted. See 40 C.F.R. § 258.15(a). The engineering measures proposed by Angelo's are discussed below. Because it was found that Angelo's hydrogeological and geotechnical investigations were not sufficient to characterize all potentially unstable features of the subsurface, it was not demonstrated that the proposed engineering measures would overcome the instability and make the site suitable for a landfill. Roller Compaction Angelo's would use roller compaction on the graded floor of the landfill to compact the soils to a depth of about five feet and eliminate any voids within that depth. The Aligned Parties did not contradict Angelo's evidence that its proposed roller compaction will be done in a manner exceeding what the Department usually requires as far as roller force and the number of roller "passes." However, roller compaction will not affect deep voids. Liner System In order to ensure that the landfill’s liner system components will not be disrupted in the event of a sinkhole, Angelo’s proposes to include the reinforcement geotextile discussed above. The Department previously approved the use of geotextile reinforcement, combined with grouting, to demonstrate site stability for the Hernando County Northwest Landfill, which had a comparable risk of sinkhole formation according to the Department. The reinforcement geotextile can span a 15-foot diameter sinkhole without failure. As found above, the average diameter of the seven sinkholes within five miles of the proposed landfill is 11.9 feet. Angelo's proved that the proposed liner system meets all applicable criteria, except the requirement of rule 62- 701.400(3)(a) that the liner be installed upon a geologically stable base. Grouting Plan Angelo's grouting plan would be implemented to fill voids and stabilize areas of loose or weak material. The grouting plan was first designed to grout all locations where there was a Weight of Hammer, Weight of Rod, Loss of Circulation, or loose sands, as indicated by a low blow count. Angelo's revised the grout plan to include several more areas of concern identified later, for a total of 39 locations. Each grout location would have seven grout points, one in the center and six others equally-spaced on a ten-foot radius from the center. If more than ten cubic yards of grout is needed, additional grout points further outward would be injected until the void or loose soils are filled or stabilized. Although Angelo's proposes to grout every boring of concern, that still ties the integrity of the grouting plan to the thoroughness of the borings. The geologic evidence indicates that there are unstable areas which the grouting plan does not address. The Aligned Parties' MER analysis was persuasive in identifying potential areas of instability that were omitted from Angelo's investigation and from its grouting plan. There are other unstable areas existing on the site that should be grouted or otherwise engineered to provide support for the landfill. The grouting plan does not provide reasonable assurance that the integrity of the structural components of the landfill will not be disturbed. Other Issues Raised by the Aligned Parties The Aligned Parties raise a number of other issues, some of which begin with the assumption that the site is unstable and a large sinkhole would form at the landfill. This sometimes mixes issues inappropriately. It has been found that Angelo's did not provide reasonable assurance that the site will support the proposed landfill, but other project elements must be reviewed on their own merits where possible, assuming the site was engineered for stability. Leachate Collection System There is a single leachate collection trench in the center of the two landfill cells, which makes the landfill operate much like a single cell. The two halves of the cell slope toward the center, so that leachate will drain to the leachate collection trench, and the entire landfill slopes to the west, so that the trench will drain to a sump from which the leachate is pumped to storage tanks. At full capacity, the landfill will generate about 40,000 gallons of leachate per day. Careful cutting and grading of the earth is necessary to create the slopes that are essential to the proper functioning of the project’s leachate collection system. Settlement analyses are necessary to assure that the slopes are maintained. Rule 62-701.410(2)(e) requires a foundation analysis which must include a study of "subgrade settlements, both total and differential." "Total settlement" refers to the overall settlement of a landfill after construction and the loading of solid waste. "Differential settlement" compares settlement at two different points. Angelo's did not meet its burden to provide reasonable assurance on this point. The settlement analysis conducted by Angelo's was amended two or three times during the course of the final hearing to account for computational errors and other issues raised by the Aligned Parties. The analysis never came completely into focus. The final analysis was not signed and sealed by a professional engineer. The settlement analysis is dependent on the geologic analysis, which is inadequate. Without adequate settlement and geologic analyses, it cannot be determined that leachate collection would meet applicable criteria. Storage Tanks The Aligned Parties contend that the leachate storage tanks cannot be supported by the site. Because it was found that Angelo's geologic investigation was not adequate to identify all unstable areas, it is also found that Angelo's failed to provide reasonable assurance that the site would support the leachate storage tanks. In all other respects, the Aligned Parties failed to refute Angelo's demonstration that the storage tanks would meet applicable criteria. Groundwater Monitoring Plan The Aligned Parties contend that there is an insufficient number of monitor wells proposed by Angelo's to detect a leak from the landfill and the wells are too shallow. Because it was found that Angelo's did not adequately characterize the geology and hydrology of the proposed landfill site, the monitoring plan does not provide reasonable assurance of compliance with applicable criteria. Cell Design The Aligned Parties contend that the "mega-cell" design proposed by Angelo's provides less flexibility to respond to and isolate landfill problems than other landfill designs with smaller cells, and the mega-cell design could generate more leakage. No evidence was presented to show whether Angelo's design was one that had been approved or rejected in the past by the Department. Although it is not the best landfill design, the Aligned Parties did not show that the proposed design violates any permitting criteria. Operation and Closure The evidence presented by the Aligned Parties in support of their issues regarding the operation of the proposed landfill, such as noise, odor, and traffic, was not sufficient to refute Angelo's evidence of compliance with applicable criteria, with one exception: Angelo's has not provided an adequate contingency plan to show how it would respond to a sinkhole or other incident that required the landfill to be shut down and repaired. Assuming the site was engineered to support the landfill, there is nothing about the Closure Plan that the Aligned Parties showed does not meet applicable criteria.
Recommendation Based on the foregoing Findings of Fact and Conclusions of Law, it is RECOMMENDED that the Department of Environmental Protection deny Angelo's Permit Application Nos. 22913-001-SC/01 and 22913- 002-SO/01. DONE AND ENTERED this 28th day of June, 2013, in Tallahassee, Leon County, Florida. S BRAM D. E. CANTER Administrative Law Judge Division of Administrative Hearings The DeSoto Building 1230 Apalachee Parkway Tallahassee, Florida 32399-3060 (850) 488-9675 Fax Filing (850) 921-6847 www.doah.state.fl.us Filed with the Clerk of the Division of Administrative Hearings this 28th day of June, 2013. COPIES FURNISHED: Carl Roth, Qualified Representative 8031 Island Drive Port Richey, Florida 34668-6220 Christopher M. Kise, Esquire Foley and Lardner, LLP 106 East College Avenue, Suite 900 Tallahassee, Florida 32301-7732 Wayne E. Flowers, Esquire Lewis, Longman and Walker, P.A. Suite 150 245 Riverside Avenue Jacksonville, Florida 32202-4931 Janice M. McLean, Esquire City of Tampa 7th Floor 315 East Kennedy Boulevard Tampa, Florida 33602-5211 Joseph A. Poblick, Esquire City of Zephyrhills 5335 8th Street Zephyrhills, Florida 33542-4312 Doug Manson, Esquire William Bilenky, Esquire Brian A. Bolves, Esquire Manson Bolves, P.A. 1101 West Swann Avenue Tampa, Florida 33606-2637 Jacob D. Varn, Esquire Linda Loomis Shelley, Esquire Karen A. Brodeen, Esquire Fowler, White, Boggs, P.A. 101 North Monroe Street, Suite 1090 Tallahassee, Florida 32302-1547 David Smolker, Esquire Smolker, Bartlett, Schlosser, Loeb and Hinds, P.A. Suite 200 500 East Kennedy Boulevard Tampa, Florida 33602-4936 Stanley Warden, Esquire Christopher Dale McGuire, Esquire Department of Environmental Protection Mail Station 35 3900 Commonwealth Boulevard Tallahassee, Florida 32399-3000 William D. Preston, Esquire William D. Preston, P.A. 4832-A Kerry Forest Parkway Tallahassee, Florida 32309-2272 Herschel T. Vinyard, Jr., Secretary Department of Environmental Protection Mail Station 35 3900 Commonwealth Boulevard Tallahassee, Florida 32399-3000 Matthew Z. Leopold, General Counsel Department of Environmental Protection Mail Station 35 3900 Commonwealth Boulevard Tallahassee, Florida 32399-3000 Lea Crandall, Agency Clerk Department of Environmental Protection Mail Station 35 3900 Commonwealth Boulevard Tallahassee, Florida 32399-3000
The Issue The issues to be resolved in this proceeding concern whether the Petitioner is entitled to a permit permitting installation of an on-site sewage disposal system (OSDS) on his property located in Dixie County, Florida, in the vicinity of the Suwannee River and whether he is entitled to seek a variance from the statutes and rules concerning permitting of such systems.
Findings Of Fact The department hereby adopts and incorporates by reference the findings of fact set forth in the Recommended Order.
Recommendation Having considered the foregoing Findings of Fact and Conclusions of Law, the evidence of record, the candor and demeanor of the witnesses and the pleadings and arguments of the parties, it is therefore RECOMMENDED: That a Final Order be entered denying the Petitioner's application for an OSDS permit, without prejudice to the applicant applying for and seeking a variance from the statutory and rule requirements related to permitting for the reasons found and concluded above, and without prejudice to applying for and pursuing an OSDS permit application should the applicant, at a later time, be able to demonstrate that alternative methods of treatment and disposal of the sewage effluent at issue can feasibly be performed, within the bounds of the standards enunciated in the above-cited statutes and rules concerning on- site sewage disposal permitting. DONE and ENTERED this 21st of December, 1990 in Tallahassee, Leon County, 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 21st day of December, 1990. APPENDIX TO THE RECOMMENDED ORDER IN CASE NO. 90-2487 PETITIONER'S PROPOSED FINDINGS-OF FACT Accepted. Accepted. 5-14. Accepted. RESPONDENT'S PROPOSED FINDINGS OF FACT 1-7. Accepted. COPIES FURNISHED: Sam Power, Agency Clerk Department of HRS 1323 Winewood Boulevard Tallahassee, FL 32399-0700 Linda K. Harris, Esquire General Counsel Department of HRS 1323 Winewood Boulevard Tallahassee, FL 32399-0700 John K. McPherson, Esquire 22 South Main Street Gainesville, FL 32601 Frances S. Childers, Esquire Assistant District III Legal Counsel Department of HRS 1000 Northeast 16th Avenue Gainesville, FL 32609 =================================================================
Findings Of Fact The Petitioner, Southeast Hillsborough Civic Association, Inc. (SEHCA), is a corporate entity. The majority of its members reside in southeast Hillsborough County in the vicinity of the proposed landfill site. The Respondent, Department of Environmental Regulation (DER), is a state agency charged with regulating the construction and operation of sanitary landfills pursuant to Chapter 403, Florida Statutes, and Chapters 17-3, 17-4, 17-7, 17-9 and 17-25.04(5), Florida Administrative Code. The Respondent, Hillsborough County, Florida, is a political subdivision of the State of Florida. It is a local government entity which serves the areas within its geographical boundaries with traditional types of government services designed to promote and protect the public health, safety and welfare, including the collection and disposal of solid waste. Hillsborough County currently disposes of its solid waste at the Hillsborough Heights Landfill. The Hillsborough Heights Landfill is, however, nearing capacity, and the County is under a mandate, pursuant to a stipulation and settlement agreement executed with DER, to close the Hillsborough Heights Landfill by October 31, 1984. Accordingly, Hillsborough County must put in train the initial phases of construction of a new sanitary landfill in early 1984, once an appropriate site in terms of environmental considerations and other considerations is approved and the appropriate construction and operating permits issued. In August 1981, with a view toward the upcoming necessity to obtain a new sanitary landfill site, Hillsborough County hired the consulting and engineering firm of Camp, Dresser and McKee (CDM) to assist Hillsborough County in studying, identifying, evaluating, and ultimately selecting a new sanitary landfill site. CDM is an engineering consulting firm employing a team of engineers that specialize in the technical aspects of solid waste disposal and management and related landfill design and construction. Ardaman and Associates, Inc. (Ardaman), is an engineering and geotechnical consulting firm with extensive experience in geotechnical investigation and engineering pertinent to the construction of solid waste disposal facilities in Florida and elsewhere in the world. It employs engineers specializing in those functions. CDM and Ardaman, as well as certain Hillsborough County employees, conducted a detailed investigation of the subject site, collecting numerous soil samples and installing 22 monitoring or inspection wells. A multitude of analyses and tests were performed on the soil and water samples taken with the resulting information being used to prepare the designs for the landfill and concomitant data incorporated in the permit applications sub judice. On February 28, 1983, Hillsborough County filed an application for DER permits to construct and operate a solid waste resource recovery and management facility, as well as accompanying permit applications for the dredge and fill activities and storm water discharge facilities involved. After an extensive review process by DER in conjunction with the Hillsborough County Environmental Protection Commission (HCEPC) as well as the Southwest Florida Water Management District (SWFWMD), and after further responses and information in response to DER inquiry were filed by the permit applicant, DER gave notice of its intent to issue the permits to Hillsborough County for the proposed landfill, storm water drainage system, and related dredge and fill activity. The Petitioner, SEHCA, timely requested an administrative hearing concerning its opposition to the issuance of these permits. The proposed landfill will serve all the unincorporated portions of Hillsborough County, as well as the cities of Tampa, Temple Terrace, and Plant City. The current population of the County is approximately 650,000. The population of the County is expected to grow to 950,000 by the year 2000, and 1,375,000 by the year 2020. The landfill is expected to provide for the waste disposal needs of the County for a minimum of 34 to a maximum of 40 years and is proposed to be the County's only landfill until approximately the year 2020. The proposed landfill would occupy approximately 175 acres out of a total of 1,100 acres at the proposed site, such that there is land available at the site that can be used for landfill purposes after the ultimate completion of the landfill at issue herein. Hillsborough County must presently dispose of approximately 2,000 tons of solid waste per day, or approximately 650,000 tons per year. By the year 2015, the County will be required to dispose of in excess of a million tons of solid waste per year. The proposed landfill would receive only nonhazardous, solid waste. It would not accept hazardous or toxic waste, infectious material, hospital waste, liquid waste, septic tank or sewer plant sludges, or similar toxic or hazardous material. The material placed in the landfill would consist of only domestic waste, debris from demolition, construction debris, and other nonhazardous items. In 1987, Hillsborough County and the City of Tampa will both have resource recovery incineration facilities in operation. These facilities will burn approximately 85 percent of the solid waste generated in Hillsborough County and the City of Tampa, with concomitant energy generation. After these resource recovery facilities are placed in operation, the proposed landfill would receive mostly ash from the resource recovery incineration process, as well as some nonburnable waste such as construction debris and demolition debris, and any solid waste which may be generated by the various cities and County which exceeds the capacity of the resource recovery incineration facilities. Thus, since the resource recovery facilities will reduce the volume of the County's solid waste to ash, that volume entering the landfill will be reduced by as much as 90 percent by 1987 or shortly thereafter. The Site The landfill site is in a remote area of southeast Hillsborough County approximately 25 miles from downtown Tampa. The site is two miles northwest of the community of "Picnic," which lies at the intersection of County Road 39 and County Road 672. The nearest paved county road is approximately a half-mile from the site. The site contains approximately 1,100 acres of land within the boundaries. The remainder of the property in excess of the 175 acres used for the proposed landfill will be used for buffer zones, borrow areas, and ancillary facilities as well as land which could be used for an additional landfill facility in the remote future. Hillsborough County also has acquired land to be used as a buffer zone on the southeast corner of the site and land which will be used for the access road to the landfill from County Road 672. The site is located in a large phospate mine, which was started in 1945 and abandoned since 1965. The site is surrounded by a buffer zone consisting of citrus groves, woods, rangeland, and other phosphate mining areas. The orange groves and trees on the southern side of the property create an effective visual barrier between the site and the nearest public road. The closest residence is in excess of 1,000 feet from the site boundary and at a greater distance from the actual landfill site, which lies some distance inside the site boundary. The two closest homes, lying slightly over 1,000 feet and approximately 1,500 feet from the subject property boundaries, both use deep wells in the Floridan Aquifer for potable water. There are only 17 to 20 residences within a mile of the property boundary. Most of these homes are located south of the landfill site along County Road 672. A few additional residences are located a mile or more from the site east along Counts Road 39. The character of the land within several miles of the site is essentially rural, with no large residential subdivisions or commercial development within several miles of the site. The County zoning at the site is "A" and "AA," and is such that a government-owned and operated landfill will be permitted in both of these zoning districts. Landfill Design The design of the landfill includes three major components: a clay liner; a permanent leachate collection system; and a storm water drainage system. The landfill will be built on an unmined clay settling area which was constructed and filled with clay during the former mining operation on the site. Starting in 1945, clay from the phosphate mine was pumped into the settling area together with water obtained by the mining operation from deep wells in the Floridan Aquifer. It was pumped into the clay settling area in a liquid or semi-liquid state and allowed to consolidate and solidify. The clay will provide an appropriate liner for the bottom of the landfill. The site investigation by Ardaman reveals that the clay has a very low permeability (10- 8, or .00000001 cm. per second). The landfill and solid waste deposited therein will be placed only in areas with a minimum thickness of clay liner of at least four feet. The clay liner ranges in thickness at the precise landfill site from a minimum of four feet, up to 21 feet. In comparison, many landfills of acceptable design have a liner of 18 inches to two feet thick. By limiting the landfill to areas where the clay is a minimum of four feet in thickness, the liner's depth and continuity across the landfill is assured in terms of providing protection for groundwater resources from landfill leachate percolation. The clay will prevent leachate (water percolating through the landfill which picks up suspended or dissolved pollutants from the solid waste) from moving out of the landfill. Due to the clay's extremely low permeability there is an insignificant likelihood of any leachate ever escaping through the clay liner. As the construction of the landfill progresses, the clay will settle and further consolidate under the weight of the refuse. The clay will then in effect form a large bowl that will collect leachate. To insure the structural stability of the clay underlying the landfill, the landfill will be built in several phases. A planned sequence of "loading" operations will be carried out to allow the clay to settle in a carefully controlled manner. Ardaman's calculations in evidence establish that the sequence of loading operations will have a large safety factor in that the structural strength of the clay will be greater than necessary to support the weight of the proposed landfill. As the clay consolidates, the water in the clay will be squeezed out, and approximately one-half of the groundwater in the clay at the present time will migrate upward into the leachate collection system. The other 50 percent or so of the water content of the clay will migrate in a downward direction into the surficial groundwater aquifer over a period of the entire 40-year estimated life of the landfill. Since water will be flowing upward from the clay into the leachate collection system, it was undisputed that leachate will not be able to flow downward into the clay during the active life of the landfill because of the positive, upward hydraulic head developed (aside from the impermeable nature of the clay). The leachate will thus be somewhat diluted by the groundwater migrating upward from the clay liner. The leachate will be automatically pumped out of a collection sump as long as the landfill operation is going on and after it is completed. Once the landfilling operations are completed, the landfill will be covered with a clay or "synthetic cap" to prevent any water from entering the landfill and forming leachate in the future after the landfill operation is phased out. Should any leachate enter the clay liner, the clay would act as a filter and partial treatment medium for any liquid that moves through it. For example, clay will remove heavy metals from the leachate such that the fluid emerging ultimately from the bottom of the clay liner would be filtered and partially treated. Thus, the clay liner has very low permeability, is continuous and homogenous, and provides long-term protection for ground and surface waters by preventing any leachate from escaping from the landfill itself. Leachate Collection System A permanent leachate collection system will be used in the operation of the landfill. The system is designed to collect and remove all leachate resulting from percolation of rainfall through the refuse in the landfill before it can percolate to groundwater or move in a lateral direction so as to enter the ground or surface waters of the state. The leachate collection system is based on conservative design assumptions, in that it is designed to collect and remove all water moving up from the clay as the clay liner consolidates, as well as water which has moved downward through the landfill. The water will move into the leachate collection system for the entire 40-year life of the landfill and beyond, but the design parameters for the leachate collection system were based upon the conservative assumption that all the water from the clay-settling area would migrate upward into the leachate collection system during the first ten years of landfill operations. Thus, the calculations upon which the leachate collection system design was predicated included this intentionally inflated prediction about the amount of leachate that will be generated and handled by the system. The amount of leachate actually produced will be substantially less than the amount predicted and the leachate collection system was shown to be based on sound engineering principles. The leachate collection system will be constructed by placing from three to eight feet of sand over the clay liner of the landfill. Trenches two feet wide by two feet deep will then be dug at 200-foot intervals and filled with drainfield rock averaging 1 1/2 inches in diameter. The trenches thus serve as conduits to collect leachate percolating downward through the landfill refuse and drain it to a central sump where the leachate will be pumped out by automatic pumps which operate when the leachate level in the sump reaches a certain height. Backup pumping capacity is provided to avoid overflow of leachate out of the sump and out of the side of the landfill in the event of mechanical breakdown. No leachate is expected to be generated for approximately the first three years of landfill operation since the refuse will act in the nature of a sponge to soak up and retain water entering the landfill for approximately that period of time. Once leachate is produced and collected in the sump, however, it will be pumped into active areas of landfill for recirculation through the landfill. Recirculating leachate was established to be an acceptable form of pretreatment or partial treatment for leachate. Recirculation by percolating leachate back through the refuse in the landfill evaporates some water and causes some of the pollutants to be absorbed by the refuse and soil in the landfill, reducing the total amount of leachate produced which must be removed from the landfill site. In the instant situation, any excess liquid leachate will be pumped out of the sumps, stored in storage tanks and periodically removed and trucked to a county wastewater treatment facility for treatment. Wastewater treatment plants of the secondary treatment mode are capable of adequately treating landfill leachate. The County, however, expressed a willingness to construct a treatment plant at the landfill site for specifically treating leachate from the landfill as an alternative to trucking leachate to a nearby county wastewater treatment plant should this method be more efficacious in preventing landfill leachate causing a deleterious effect on surface waters of the state, either at the landfill site or as a component of effluent from a nonspecifically designed wastewater treatment plant. Storm Water Drainage System In addition to the actual construction permit application for the landfill itself, the county has submitted an application for construction and operation of a storm water drainage system to be used in conjunction with the landfill operation. The DER performance standards for storm water drainage systems are contained in Rule 17-25.04(5), Florida Administrative Code. In effect, such a storm water system must drain and filter runoff from the first one inch of rainfall which falls on a given area within 72 hours. This rule presumes that such a capacity provides reasonable assurances that all applicable DER water quality standards will thus be met. In point of fact, it was established that primary pollutants carried by storm water runoff are flushed from the surface of land and in effect "bound up" in the first one-half inch of rainfall. The proposed storm water system to be used in conjunction with the landfill will meet this performance standard. It was undisputed that the storm water system will indeed collect, detain, and filter the runoff from the first inch of rainfall within 72 hours at the site. The system can handle and filter larger amounts of rainfall and, indeed, when initially installed, the system will filter runoff from the first inch of rainfall occurring within 24 to 36 hours. The storm water drainage system is designed to keep storm water completely separate and physically apart from the landfill itself and thus to prevent leachate from entering the storm water drainage system and vice versa. Rainwater falling on the active landfill itself will move through the landfill vertically, percolate through the refuse and soil, and be collected as leachate in the leachate collection system, with subsequent treatment. Rainfall falling on the surrounding portions of the landfill site will not contact refuse, but, rather, will flow laterally into the storm water drainage system basins, where it will be filtered to remove silt, sediment, and other degradatory materials. Thus, the water entering the storm water system will be rainwater, together with any sediments or other materials nicked up during the course of its drainage over soil and land, with no contact with refuse or related pollutants. The filter medium in the storm water basins will consist of clean sand. The basins will consist of berm walls and at least two feet of clean sand in the bottom as the filter medium. The approximately six basins and drainage swales will serve as a filtration-treatment mode, as well as retention ponds, as a method of storm water treatment. A drainage swale will be used to filter storm water runoff from the access road. This method of storm water filtration and treatment has been shown to be acceptable on other landfills similarly designed and to be the most effective method of filtration and treatment of storm water related to such a landfill operation. The storm water system will thus reduce the potential for pollution in the streams near the site which will receive the filtered storm water after it is ultimately discharged from the basins and retention ponds and swales. Presently, the sand, sediment, clay, and other materials on the site are washed into the streams by storms. After the landfill is constructed and operating, the storm water flowing off the sites will also be filtered and treated in accordance with DER standards. Particulate matter in the storm water runoff will be collected in the basins. Periodic monitoring of the effectiveness of the storm water treatment basins and swales should be performed to ensure the filter medium continues to function effectively as opposed to becoming clogged with silt deposits with resultant overflow of unfiltered storm water over the tops of the basin berms. Water Quality Hillsborough County has conducted a ground and surface water monitoring program to evaluate the existing water quality at the site. This was done through the installation of monitoring wells and concomitant sampling of the water in those wells for water quality parameters in accordance with DER rules. The ground and surface water at the site will be regularly monitored throughout the life of the landfill through the use of monitor wells and other means. Parenthetically, it should be noted that the DER rules require a minimum of three monitor wells to be installed at Class I landfills such as this. Hillsborough County has installed nine monitor wells and performed evaluation and testing of water quality of water samples collected from all nine of those wells. That monitoring program included tests for "indicators," that is, substances that would reveal whether a need for further testing existed. Such tests were performed both at the groundwater monitoring well sites, as well as surface water sampling locations over the entire landfill site. The tests indicated elevated concentrations of total organic carbon in the groundwater. Steve Boyes, an employee of DER, was tendered and accepted as an expert on water quality at phosphate mine sites. He established that the total organic carbon concentrations found in certain groundwater samples came from naturally occurring organic material in the groundwater. Test data supported that conclusion. The wells with elevated levels of total organic carbon collected water from an area in the soil which contained roots and other decomposing organic matter. The organic carbon concentration noted in certain groundwater monitoring wells is a naturally occurring instance. There is no DER water quality standard extant in the rules for total organic carbon. It was not demonstrated to have any deleterious effect on human health, and the installation and operation of the landfill was not shown to cause or enhance any deleterious effect on surface or ground waters of the state (or its citizens) which might be occasioned by the elevated carbon concentrations in groundwater at portions of the site. The phosphate mine which formerly operated at the subject site was known as the Boyette Washer Mine. Initially, in the first years of its operation, it used what is called a "single stage washing process" to separate the phosphate from clay. In this process, the clay, sand, and phosphate were separated simply by hydraulic means, that is, being washed with water from deep wells in the Florida Aquifer. The clay and water was then pumped into a clay- settling area. No chemicals were used for separation of the phosphate in this process. The clay-settling area in which the clay and process water was pumped is now the subject landfill site, the clay being naturally consolidated over time and which will be further consolidated in the construction process of the landfill into the "clay liner." After several years (approximately in 1955), the mine operators built a first-stage flotation plant which used caustic soda, tall oil (fatty acids), and fuel oil to separate the fine clay materials from the phosphate. Tom Holland, a witness for the Petitioner, worked as the mine supervisor for a substantial number of years. He established that most of the clay discharge in the clay-settling area came from the washer process as opposed to the flotation process. The clay-settling area was almost full of clay before the flotation plant began operation. Dr. Garlanger is a former professor at the Massachusetts Institute of Technology and was tendered and accepted as an expert witness on clay waste disposal. He presented a study of water quality data collected from six phosphate mines using the same treatment processes. Clay samples were taken out of these similar or typical phosphate mines for purposes of comparison to the water-clay characteristics of landfill sites. For purposes of that study, the water was squeezed from clay taken from those six representative clay-settling areas. The data from those sites showed that normally the water embodied in the clay meets the Department's primary and secondary drinking water standards. At the proposed landfill site, the water squeezed from clay samples taken from the bottom of the clay-settling area would be the same or better quality than those from other mine locations, since only clay and water were pumped into the settling area for several years before any flotation process was begun at the mine. During that time the only substances going into the bottom of the clay- settling area were clay and drinking water obtained from deep wells in the Florida Aquifer, the primary source of potable drinking water for this portion of the state. Thus, any water migrating downward from the bottom of the clay- settling area, or clay liner, would be uncontaminated water which meets drinking water standards, inasmuch as the high impermeability of the clay liner would prevent pollutants migrating from above in the form of landfill leachate. It would be a better quality than the water collected at the six other mine sites because the samples collected from those clay-settling areas were collected at the top and thus contained the process water from the flotation plants at those mines. Even so, those samples still met DER's primary and secondary drinking water standards. Data collected from this landfill site confirms these findings. Hillsborough County performed water quality analyses for "priority pollutants" on water samples taken from a number of locations around the site. These analyses were designed to identify any pollutant which might have been deposited at the site in the mines' process water, including benzine and kerosene compounds. Hundreds of analyses were performed, and all of the priority pollutant tests were negative. There are no priority pollutants such as benzine or kerosene in the groundwater at the landfill site. The results of this detailed investigation, in evidence, establish that the quality of water in the clay at the site, if squeezed out of the bottom of the clay liner in the present clay-settling area of the old mine, will not contribute to any water quality violations of pertinent rules. To ensure this result, the County has agreed to regularly monitor and test the ground and surface water at the site throughout the life of the landfill. The Petitioner presented no contrary water quality data. Two lay witnesses living near the site have fished in the mine-cut lakes near the landfill site, but which are not involved in the landfill construction and operation. These witnesses have noted a kerosene-like flavor in fish consumed which were caught from these "mine-cut lakes." The cause of that peculiar taste in the fish was not demonstrated, and no evidence was presented to establish that the taste was caused by water from the clay-settling area, which is the only part of the former phosphate mine site involved in this proceeding. Radioactivity In the course of performance of the water quality analyses referred to above, the radioactivity in the groundwater at the site was evaluated. Levels of radium 226 in the filtered water sample were within DER standards. There were, however, elevated levels of gross alpha radiation in two of the test wells. Dr. Emmett Bolch, a professor of radiation-related studies at the University of Florida, and Dr. John Garlanger established that the elevated levels of gross alpha radiation are caused by naturally occurring deposits of radioactive minerals in the "leach zones" on top of the "Bone Valley formation" lying beneath the landfill site. The leach zone is the weathered, fissured surface of this Bone Valley formation, which was weathered during exposure to the atmosphere and elements at remote geologic times. Radioactive minerals were then deposited by alluvial action in the fissured surface, and at later geologic times, the leach zone of the Bone Valley phosphate-bearing formation was covered with sand, silt, and other materials. The Petitioner's expert witness agreed that gross alpha radiation in the groundwater was a naturally occurring phenomenon. Excessive levels of gross alpha radiation do not typically occur in clay-settling areas such as the one where the landfill would be built. Dr. Bolch has substantial experience with the study of radiation levels at phosphate mines throughout Florida. The radiation level in water contained in clay- settling areas is normally well within the applicable Department standards, but, in any event, the radioactive material in clay-settling areas is primarily bound up in the particles and sediment. Once water moves through the ground in clay- settling areas, these radioactive particles are filtered out, thus no significant level of radioactivity could leave the clay-settling area in the groundwater. Although unfiltered samples containing radioactive sediment and particles may demonstrate elevated radioactivity, filtered water samples from clay-settling areas routinely meet DER standards for radiation. These filtered samples of water are more representative of typical drinking water which citizens would obtain from the surficial aquifer, to the extent that they use shallow wells. This thesis by Drs. Bolch and Garlanger is factually established by the water quality data obtained at the instant site. Test Hole 28, one of the County's monitor wells, is located hydrologically down-gradient from the clay- settling area. Water flows from the clay-settling area and passes through Test Hole 28. The water quality in Test Hole 28 is representative of the water quality in the clay-settling area. Nonetheless, the filtered sample collected from Test Hole 28 on October 14, 1983, contained 11.6 pci/liter of gross alpha radiation [see Exhibit 84(c)]. This is well within the DER standard of 15 pci/liter. Thus, the water quality tests for these sites establish that groundwater flowing out of the clay-settling area does not contain elevated levels of gross alpha radiation. On the other hand, high levels of gross alpha were found in Test Hole 22, which lies up-gradient (hydrologically upstream) from the clay-settling area. Since the water from a clay-settling area would not flow in an uphill direction, the high gross alpha content in Test Hole 22 would not have come from the clay-settling area, nor would the higher level of radiation found in that test hole leave the clay-settling area and migrate off the landfill site. It is noteworthy that Test Hole 22 is located on land that has not been mined. The higher level of radiation found in that well is clearly naturally-occurring, and its concentration has not been enhanced by any man-made technological process. Accordingly, it has been established that the water coming from the bottom of the clay liner will meet DER primary and secondary drinking water standards. It will not have elevated levels of radioactivity. Steve Boyes, a DER hydrologist and expert witness on groundwater impacts of the phosphate mining process, established that there is a very low, extremely remote possibility that the landfill will ever have any effect on any drinking water supply. Operation and Maintenance of Landfill Most of the refuse was brought to the landfill in a closed transfer truck from transfer stations set up by the County. The refuse will be inspected at the transfer station before it is loaded on the trucks for transportation to the landfill. At the entrance to the landfill, trucks will be weighed and inspected for chemical or hazardous wastes which cannot be placed in the landfill and then will he directed to the active "working face" of the landfill. Two full-time employee-inspectors will be on duty at the working face to visually inspect the refuse as it is placed on the landfill. The refuse will be spread across the working face and compacted in layers. At the end of the working day, at least six inches of daily cover material will be placed over the refuse. A 12-inch layer of intermediate cover material will be placed over areas not to be used again for several months. After an area of "lift" has been filled to its maximum elevation, a two-foot layer of final, permanent cover will be placed over it. All cover material is available on the site. The daily cover material will consist primarily of sand obtained from the sand tailings pile at the mine site. The sand material was established to be an appropriate daily cover material. It is readily workable and, unlike clay, can be used under adverse weather conditions, such as prolonged rainfall. A sand-clay mix would not be an adequate cover material for daily use; it is not as easily workable, especially when wet, and would create a relatively impermeable cap, which could cause methane to build up beneath it in the landfill. When a new lift or cell is built on the landfill, additional refuse is placed over the preceding daily cover. If sand is used for daily cover, any leachate in the new material can readily pass through the sand and appropriately enter the leachate collection system. If a sand-clay or all-clay mix were used, the leachate would not be able to percolate downward and would form pockets or pools at various levels in the landfill rather than flowing downward into the leachate collection system. These pools of leachate would then break out of the sides of the landfill and possibly pollute surface waters of the state by entry into the storm water system or otherwise. Routine maintenance practices at the landfill will prevent potential problems such as this from developing. Regular frequent inspections will be made around the entire landfill. Movable litter fences will be erected around the working face to retard dispersal of windblown litter. Work crews will regularly pick up any litter on access roads, which problem will largely be prevented initially through the use of covered trucks for transportation of refuse into the landfill. The storm water basin and drainage system must be regularly inspected and maintained to prevent sedimentation clogging. The most likely operational problems typically occurring at such a landfill can largely be prevented by regular inspection and routine maintenance. In this connection, the sanitary engineer's office of the county should maintain a qualified county employee in sanitary landfill operations to oversee the correct operation of the landfill, especially if operation of the landfill is performed by a private contractor or agent. Methane Gas As organic material such as discarded food, grass clippings, etc., decomposes, it produces methane gas. The ash and residue from the resource recovery facilities, once they become operational, will not produce methane gas when deposited in the landfill, since that refuse would already be burned. Since there will be limited amounts of organic solid waste going into the landfill after 1987, the potential for methane gas generation is limited. The daily cover material of sand is highly permeable and will allow methane gas generated to escape to the atmosphere in a harmless fashion. If methane gas is seen to accumulate in an adverse manner inside the landfill, the County will construct vents at appropriate locations on the landfill to allow methane to escape to the atmosphere. As established by Dr. Urone, the Petitioner's own expert on air pollution, the release of methane gas to the atmosphere will not violate any air quality standards or cause human health problems. Odor Odor at landfills is caused by decomposition of organic matter. As in the case of methane gas, the potential for odor generation will be greatly reduced after 1987 because the landfill will only receive limited quantities of unburned organic waste. Potential odor problems at landfills normally are eliminated by appropriate and regular application of the daily cover material over the refuse. If daily cover material is properly used, there will be no noticeable odor beyond the site boundary of the landfill. The applicant should be required, as a condition to a grant of the subject permits, to agree to weekly inspections by both the Hillsborough County Environmental Protection Commission and/or DER to ensure that the landfill is operated in compliance with all the permit conditions, including the condition that odor be unnoticeable beyond the site boundary. If an odor problem develops, the Department should require Hillsborough County to place additional thicknesses of cover material over the solid waste daily, as well as to require a different cover material should the sand cover material prove inappropriate. Dust Control Dust control of the site will be accomplished by water spraying which will be used on access roads, working roads within the landfill itself, and at the working face and all construction areas. The roads on the site will be paved or coated with soil cement to reduce airborne dust. Further, the size of the working face and the borrow area will be kept to a minimum to reduce the potential for airborne dust. Petitioner's expert on air pollution, Dr. Urone, acknowledged that these standard, well-known dust control practices would be sufficient to control airborne dust problems. Airborne Radiation Hillsborough County's radiation expert, Dr. Bolch, calculated the potential radiation caused by dust emissions at the site due to landfill operations. His calculations are based on a "worse case" scenario concerning dust-borne radiation emissions. Radiation from dust emissions at the landfill site will be insignificant. Currently, radon gas is released from the clay- settling area and the sand tailings pile. When the landfill is built, however, the sand and clay obtained from the sand tailings pile and clay in the clay liner will be buried at the bottom of the landfill, except for the sand deposited as daily cover at the current working face. By the burying of the other sand and clay used in the landfill beneath the landfill, the landfill itself will actually create a barrier to prevent radon gas from entering the atmosphere beyond that minute amount present in the daily cover material on an active landfill "lift." Thus, the landfill will actually somewhat reduce the current radon gas emissions naturally occurring at the site. The radon gas was not demonstrated to have any health impact on people working at the site nor on surrounding residents. Nor were existing levels of gamma radiation at the site shown to have any human health impact. Sink Holes The likelihood of a sink hole occurrence at the proposed landfill is very low. Dr. John Garlanger of Ardaman and Associates was accepted without objection as an expert in the area of soil mechanics, clay waste disposal, hydrogeology, and sink hole formation. He is a member of the advisory board for sink hole research at the University of South Florida and has published numerous papers and articles on the remediation of sink holes and their causes. He directed the subsurface hydrogeologic investigation at the landfill site preparatory to filing the permit applications. The overburden soil at the immediate site of the landfill is approximately 22 feet thick, with the phosphate bearing Bone Valley formation underlying that, for a depth of approximately 20 feet. Below that formation is the dense Hawthorne formation of an approximate 105-foot thickness, before the Tampa Limestone strata, which encompasses the Floridan Aquifer, is reached. Because of the great thickness of the Hawthorne formation, which is quite dense and which serves to protect the limestone underlying it from fissure development caused by percolation of ground water (which can ultimately result in sink hole formation), there is a scant likelihood of sink holes developing beneath or in the immediate vicinity of the landfill which could cause a deleterious impact on ground water supplies in the area. The likelihood of a sink hole developing at the proposed site is much lower than in other areas of Hillsborough County to the north, northeast, and northwest. The fact is corroborated by the investigation of Southwest Florida Water Management District which establishes that indeed the site has a low potential for sink hole development (DER Exhibit 5). 2/ Dredge and Fill Activities The proposed dredge and fill activities at the landfill consist of the installation of several culverts for road crossings and similar minor activities. The proposed activities were designed to minimize any potential impacts on state waters. Hillsborough County will use turbidity curtains and other recognized techniques for controlling erosion, sedimentation and other impacts from these activities. In this regard, there is no contiguous connection between the clay-settling area where the landfill will be constructed and any surface water body. A culvert is located passing through a berm or dike on the southwest side of the clay-settling area, but the culvert only discharges water on rare occasions of extreme rainfall. The vegetation near the culvert shows that the rainwater standing on the clay-settling area rarely rises to a level which would cause a discharge from that basin. Similarly, with regard to the lakes on the southeast side of the county's property, which are not involved in the area of the proposed landfill construction and operation, there is no contiguous surface water connection between those lakes and the surface waters located off the site. There is some groundwater seepage from the foot of a dike, but no regular flow over the top of the dike connecting to any surface water body was established. In any event, the proposed activities would have no significant short- or long-term adverse impacts on water quality. The Petitioner relied on the testimony of two expert witnesses, Drs. Carnahan and Urone. Drs. Carnahan and Urone collected no soil, water, or air samples and performed no laboratory tests nor independent calculations or analyses. Dr. Carnahan read the permit application less than a week before the final hearing and visited the site only on the day before his testimony. Dr. Urone never visited the landfill site. Dr. Urone was proffered as an expert in air pollution, but he has no prior experience with the construction and operation of landfills in terms of their air pollution potential. Dr. Urone opines that there could be a potential odor problem at the landfill, but has done no analysis or investigation regarding this potential problem at the subject landfill site, or any other similar landfill, to calculate the amount of potential odor which could be generated. He admittedly is not an expert concerning the use of soil cover to control odors at landfills. He refrained from expressing an opinion about the suitability of the proposed daily, intermediate, and final soil covers. Further, Dr. Urone acknowledges that the methane gas in itself, in the concentrations to be expected from such a landfill, would have no significant impact on air quality. He further admitted he was unable to estimate what would occur at the subject site in terms of airborne dust emissions, but acknowledged that they could be controlled by using well-known dust control techniques such as those found above. Finally, Dr. Urone admits that if the landfill was operated in a manner described in the permit application documents which he reviewed, then there should be no health problem as that is defined by current health standards, nor did he expect any violation of air quality standards. Based on a limited review of the permit application materials, both Drs. Carnahan and Urone expressed only general concerns about the effects of the proposed project. Finally, Dr. Carnahan admitted the thoroughness of the investigation and site evaluation performed by Respondent's expert witnesses in these subject areas and did not dispute the result of their investigations (in evidence). Thus, the testimony of the expert witnesses presented by the County in the above subject areas is accepted.
Recommendation Having considered the foregoing Findings of Fact, Conclusions of Law, the evidence in the record, the candor and demeanor of the witnesses, and the pleadings and arguments of the parties, it is, therefore, RECOMMENDED: That the Department of Environmental Regulation issue permits to Hillsborough County for the construction and operation of the proposed Southeast Hillsborough County landfill and for the attendant storm water drainage system and dredge and fill operations, subject to the following conditions: That the Hillsborough County Environmental Protection Commission and/or DER ensure that the landfill operation is inspected by duly qualified personnel on a weekly basis; That the county have a qualified employee on the site daily to ensure that the landfill and storm water drainage system is being consistently operated properly; That the Department should take background water samples from wells of the residents living within one mile of the site before construction and operation of the landfill commences to establish background data by which to measure the quality and safety of the later landfill operation in terms of any impacts on groundwater quality, which water quality should be periodically monitored in a similar manner thereafter. DONE AND ENTERED this 29th day of December, 1983, at Tallahassee, Florida. P. MICHAEL RUFF Hearing Officer Division of Administrative Hearings Oakland Building 2009 Apalachee Parkway Tallahassee, Florida 32301 (904) 488-9675 FILED with the Clerk of the Division of Administrative Hearings this 30th day of December, 1983. COPIES FURNISHED: Thomas W. Reese, Esquire 123 Eighth Street, North St. Petersburg, Florida 33701 William W. Deane, Esquire Douglas MacLaughlin, Esquire Department of Environmental Regulation Twin Towers Office Building 2600 Blair Stone Road Tallahassee, Florida 32301 Jacob D. Varn, Esquire David S. Dee, Esquire Suite 410, Lewis State Bank Building Post Office Drawer 190 Tallahassee, Florida 32302 Ms. Victoria Tschinkel Secretary Department of Environmental Regulation Twin Towers Office Building 2600 Blair Stone Road Tallahassee, Florida 32301
Findings Of Fact The Department (DER) is the regulatory agency of Florida charged with the duty and authority to administer and enforce Chapter 403 and Sections 376.30-376.319, Florida Statutes, and rules and regulations promulgated thereunder. Hendry is a Florida corporation that has been conducting business in excess of 60 years. The two main aspects of its business are the dredging operation and the shipyard. Hendry's site can be loosely described as an industrial site. The shipyard division performs approximately one-half its work for governmental entities, particularly the U.S. Coast Guard, which operations are largely ship refurbishing. Hendry has a Coast Guard certificate enabling it to receive mixtures containing oil and oily water waste. A significant portion of Hendry's ship refurbishing work involves repairing/replacing steel on ships which has deteriorated due to salt water exposure. That work frequently requires cutting, welding and burning. Prior to commencing the refurbrushing work, the ships must be certified as safe. In certifying a ship as being safe, the bilge area is pumped of used oil or waste oil which collects in standing waste water and oil. Also, before that works commences, the ship is defueled. Currently, Hendry's practice is to subcontract the pumping of waste oil from the ships bilge, which waste oil is pumped directly into the tanker truck of the subcontractor. Hendry no longer pumps or stores waste oil on site. In the past, the waste oil and water from the ship's bilge was pumped from the ship through a pipeline from the dry dock across the property to a 10,000 gallon above-ground storage tank. During December 1987, the U.S. Coast Guard observed a fuel spill on the water at Petitioner's facility. Based on that observation, Respondent conducted site inspections of Petitioner's facility during March and April 1988. The fuel spill was occasioned by Petitioner's refurbishment of a tuna boat at its site. Petitioner subsequently received a warning notice regarding alleged violations in its petroleum storage tanks and contamination. The transfer pipeline is of steel construction. Between 1980 and 1984, the pipeline leaked. In 1984, the pipeline was rerun with PVC line and in 1986, it was refitted with 4 inch steel pipe. The 10,000 gallon above-ground tank is located in Area 1. The removal of waste oil occasionally resulted in accidental spills. After 1985, a smaller, above-ground tank was installed adjacent to the 10,000 gallon tank to provide a storage tank for draining off water from the 10,000 gallon tank. The small tank was used to receive only water drained from the 10,000 gallon tank. Prior to installation of the small tank, a retention pond was used to drain water from the 10,000 gallon tank. The retention pond had a 2 foot berm with a visqueen liner. In October 1988, Hendry submitted an EDI Program Notification Application, a prerequisite for EDI reimbursement eligibility, under the program for costs associated with cleanup of certain petroleum contamination. In May 1989, Hendry submitted a document entitled Preliminary Contamination Assessment III Specific Areas--Task IV Rattlesnake Terminal Facility--Westshore Boulevard, Hillsborough County prepared by Mortensen Engineering, Inc. That document included reports of analysis of oil and groundwater samples taken from the site in January, March and April 1989, demonstrating extensive contamination of soil and groundwater including "free product" in monitoring wells MW-2, MW-4 and MW-4A. By letter dated November 9, 1989, the Department informed Hendry of its determination that the facility had been denied EDI reimbursement based on specific enumerated findings. Hendry entered into a stipulation with the Department on October 16, 1990, "regarding the conduct of this case and the basis for denial. " Attached to the stipulation is a sketch of the facility grounds showing a rough division of the area into four separate areas. Area 1 has two waste tanks. One was a large 10,000 gallon closed tank approximately 20 feet high and 12 feet in diameter; the other contained a volume of approximately 1,500-2,000 gallons and was an open tank. Petitioner's practice was to pump bilge in the dry dock area, located west of "Area 2" and direct the waste through underground pipes to the 10,000 gallon tank. The smaller tank was used to "bleed" water from the larger tank. Bilge waste is approximately two-thirds water. Area 2 was the location of Hendry's diesel tank farm. In the stipulation, the Department agreed to withdraw two of the seven specific grounds for the denial, namely denial of site access and failure to report discharges. Likewise, Hendry agreed to withdraw "Area 4" from its application for EDI eligibility. In the stipulation, Hendry was informed of a then recent amendment to Section 376.3071(9), which offered certain applicants who had been earlier determined ineligible for participation in the EDI program, standards and procedures for obtaining reconsideration of eligibility. The amendment required the facility to come into compliance, certify that compliance and request reconsideration prior to March 31, 1991. Additionally, compliance was to be verified by a Department inspection. Pursuant to paragraph 5(b) of the stipulation, these standards and procedures were specifically to be applied to Areas 2 and 3 at the facility. Hendry did not make a written request for reconsideration of the denial of eligibility with respect to Areas 2 and 3 on or before March 31, 1991 or at anytime subsequently. Hendry also did not come into compliance with the underground or above-ground storage tanks system regulations on or before March 31, 1991 in that Hendry failed to register a 560-gallon above-ground diesel storage tank which was onsite on that date as required by Rule 17-762.400, Florida Administrative Code. Hendry also failed to notify the Department of the Hillsborough County Environmental Protection Commission (HCEPC), as the administrator of a designated local program at least thirty days prior to closure of the storage tank system, pursuant to Subsection 376.3073, Florida Statutes. These determinations were made on April 1, 1991 by Hector Diaz, inspector in the HCEPC tanks program. Hendry submitted a registration form for the 560-gallon tank on November 18, 1991, which was of course subsequent to the March 31, 1991 deadline. Hendry stored petroleum products and waste material including petroleum constituents in the above-ground tanks until approximately March 25, 1991 when it initiated tank removal. Hendry's above-ground storage tanks, which were in use at its facility for approximately three years after extensive soil contamination was documented, were without secondary containment. In November 1991, Hendry submitted a document entitled Supplemental Preliminary Contamination Assessment Report, prepared by Keifer-Block Environmental Services, Inc. (Supplemental PCAR). The stated purpose of the study was solely to determine whether hazardous constituents were present in groundwater in Areas 2 and 3. The report included laboratory analysis of groundwater samples taken from the site in August 1991 including monitoring wells located in Area 3. The results of these analysis reflect that Area 3 is contaminated solely with heavy metals, lead and chromium. No petroleum hydrocarbon contamination was detected in Area 3. In the area adjacent to Area 2, seven of eight monitoring wells show chromium or lead contamination. Hendry had, and continues to have, a practice of removing paint from vessels by blasting them with a gritty material known as "black beauty." This practice takes place in the dry dock area near Areas 2 and 3. The waste blast grit/paint chip mixture is vacuumed or shoveled into wheelbarrels or a frontend loader and dumped into an open pile. Occasionally, the waste blast grit/paint mixture is blown about or spilled. Waste "black beauty" has been observed scattered on the ground throughout the facility. Paints sometime contain heavy metals, specifically, lead and chromium. The concentrations and distribution of lead and chromium contamination at the site are consistent with Hendry's long-standing practice of grit-- blasting paint from ships and other vessels and allowing the metal-contaminated paint and waste mixture to fall to the ground. Areas 2 and 3 are contaminated with substances other than petroleum or petroleum products, namely heavy metals. Costs associated with cleanup of lead and chromium are not reimburseable under the EDI program. Paragraph 5(c) of the stipulation allowed Hendry an opportunity to establish eligibility for Area 1 by providing information regarding operating practices at two above-ground storage tanks and a retention pond in that area demonstrating that contamination in that area is predominantly from leaks or unintentional spills of petroleum products from the tanks in that area. Hendry did not provide the required information. On January 27, 1992, Hendry submitted to the Department an affidavit executed by its principal, Aaron Hendry, which Hendry contends fulfills the requirements of paragraph 5(c) of the stipulation. Hendry, the principal who executed the affidavit, is an affiant with a legal and financial interest in the outcome of the EDI eligibility determination. The executed affidavit did not contain specific information with respect to "operating practices at the tanks and retention ponds as required by the stipulation." Specifically, the affidavit is silent as to: What the tanks were made of; When, how and by whom they were installed; What piping, leak detection or overfill protection was associated with them; What repairs or alterations had been made to them; What inventory reconciliation methods were used; Where the materials came from which was put into the tanks; In what manner, how often, and by whom material was put into the tanks; In what manner, how often, and by whom material was removed from the tanks; Disposition of material removed from the tanks; When, how, by whom and why the retention pond was dug; How and for what period of time the retention pond was used; How, often and by whom inspections of the tanks were conducted; When and how leaks occurred and were discovered at the tanks; When and how spills occurred and were discovered at the tanks; What records, including reports to state or local agencies, insurance claims, newspaper accounts, and so forth were kept with respect to leaks or spills at the tanks; What cleanup efforts were made at the time of any leaks or spills; Documentation related to registration of the tanks with state or local agencies; and Documentation with respect to any removal of the tanks, including any description of the condition of the tanks when, or if, removed. For years, the facility's retention pit was used as a "waste pit" namely, a rectangular hole in the ground, approximately 30 feet by 120 feet by 3 feet, for direct discharge of bilge waste piped from vessels at the dry dock area to the waste pit, prior to installation of the storage tank systems. After installation of the large tank in Area 1, the retention pit was used to bleed water from the bilge tank. In the past, the Department has denied eligibility to facilities where a retention pond was used for disposal of petroleum related waste and cleanup of contamination resulting from use of a retention pond. Hendry's affidavit nor other documentation submitted to the Department prior to the EDI redetermination or at hearing establishes that the bilge waste taken from the storage tanks was "a liquid fuel commodity" or recycled into such a commodity. By letter dated June 9, 1992, the Department notified Hendry that reconsideration of its EDI eligibility request for Areas 2 and 3 was denied and that the affidavit of Aaron Hendry submitted with respect to Area 1 did not satisfy the requirements of the stipulation. Thereafter, Hendry challenged the Department's denial of reconsideration and EDI eligibility which joins the issue for this proceeding. The hazardous waste allegation discovered during an inspection of Hendry's facility on April 14, 1988, resulted in a consent order which was entered as a final order of the Department on November 21, 1990. The consent order allowed Hendry an opportunity to demonstrate that not all areas at the facility were hazardous waste disposal areas and, thus, not all areas would be subject to closure and cleanup under the permitting requirements of Subsection 403.722, Florida Statutes and the remediation standards set forth in Chapter 17-730, Florida Administrative Code. To establish appropriate remediation standards and procedures which would be applicable to various areas, Hendry was required to prepare a property diagram designating areas at the property exhibiting any of the following types of contamination: Areas contaminated solely by petroleum or petroleum products or used oil which is not hazardous waste; Areas contaminated by materials which are not hazardous waste; Areas contaminated by the past or present disposal of hazardous waste. The consent order allows contamination assessment and remediation pursuant to the standards and procedures set forth in Chapter 17-770, Florida Administrative Code, for areas contaminated solely by petroleum or petroleum products. (Petitioner's Exhibit 5, paragraph 11.) The consent order requires contamination assessment and remediation pursuant to the Department's corrective action and groundwater contamination cases for all areas at the facility contaminated by used oil which is not hazardous waste or by hazardous material. (Petitioner's Exhibit 5, paragraph 12.) The consent order requires contamination assessment and remediation pursuant to a closure permit with a contingent post-closure plan to close the areas at the facility contaminated by the disposal of hazardous waste. In response to the consent order to delineate areas on the property exhibiting various types of contamination, Hendry submitted the supplemental PCAR. By letter dated March 19, 1992, the Department responded to the supplemental PCAR with a determination that: Area 1 can be assessed and remediated through the standards set forth in Chapter 17-770, Florida Administrative Code. Contamination in Areas 2 and 3 includes heavy metals, which are hazardous materials. Thus, Areas 2 and 3 should be assessed and remediated through the corrective action process for groundwater contamination cases. A hazardous waste facility closure permit application should be submitted for assessment and remediation of Area 4, which, because of the presence of Dichloroethylene, a hazardous substance and chlorinated solvent, should be expanded to include the location of monitoring well MW KBMW-2. Hendry had a practice of cleaning electrical motors by placing such motors on the ground outside the electrical repair shop near Area 4. The motors were sprayed with Trichloroethylene, a waste solvent, which was allowed to runoff into the soil. At the time of this practice, the intention was to leave the solvent contamination unchecked. The Department, pursuant to directives from the United States Environmental Protection Agency (EPA), characterizes the disposition of hazardous waste to the environment as a result of intentional, ongoing industrial practices as "disposal of hazardous waste" within the meaning of Subsection 475.703(21), Florida Statutes and 40 CFR 260.10. The consent order allowed Hendry an opportunity to challenge the Department's determination with respect to delineation of the various areas by filing a petition per paragraph 21 of the order for formal administrative hearings. Hendry filed its petition with respect to the March 19, 1992 letter, which petition is the subject of DOAH Case No. 92-2312.
Recommendation Based on the foregoing Findings of Fact and Conclusions of Law, it is RECOMMENDED that: Respondent, Department of Environmental Regulation, issue a Final Order in these consolidated cases concluding that 1) the contamination areas at issue herein are not eligible for EDI reimbursement under Subsections 376.3071(9) and (12), Florida Statutes; 2) that Petitioner cleanup the contamination in Areas 1, 2 and 3 under the guidance document entitled "Corrective Actions for Groundwater Contamination Cases"; and 3) that Area 4 be expanded to include the location of monitoring well MW KBMW-2 and closed through a hazardous waste closure/post closure permit application process. DONE AND ENTERED this 26th day of April, 1993, in Tallahassee, Leon County, Florida. JAMES E. BRADWELL 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 26th day of April, 1993. APPENDIX Rulings on Petitioner's proposed findings of fact: Paragraph 14, partially adopted in Paragraph 13, Recommended Order. Paragraph 19, rejected, contrary to the greater weight of evidence and speculative. Paragraph 20, rejected, unnecessary. Paragraph 21, rejected, contrary to the greater weight of evidence, Paragraphs 24-28, Recommended Order. Paragraph 22, partially adopted, Paragraphs 13 and 14, Recommended Order. Paragraph 23, partially adopted, Paragraph 15, Recommended Order. Paragraph 29, partially adopted, Paragraph 18, Recommended Order. Paragraphs 31, 32, 35, 48, 49, 51, 52, 60, 62 and 73 rejected, unnecessary. Paragraph 33, adopted in part, Paragraph 23, Recommended Order. Paragraph 38, adopted in part, Paragraph 23, Recommended Order. Paragraph 41, rejected, contrary to the greater weight of evidence and the two cases cited at hearing where Respondent exercises his discretion are distinguishable from Petitioner's failure to timely apply. Paragraph 43, rejected, unnecessary and/or argument. Paragraph 45, rejected, contrary to the greater weight of evidence. Paragraph 50, rejected, contrary to the greater weight of evidence, Paragraphs 37-39, Recommended Order. Paragraph 54, rejected, not probative. Paragraph 55, rejected, not probative. Paragraphs 56 and 57, rejected, contrary to the greater weight of evidence, Paragraphs 30 and 31, Recommended Order. Paragraphs 58 and 59, rejected, contrary to the greater weight of evidence, Paragraphs 23 and 24, Recommended Order. Paragraph 61, rejected, speculative and unnecessary. Paragraph 63, rejected, speculative. Paragraph 67, rejected, not probative. Paragraph 68, rejected, contrary to the greater weight of evidence, Paragraphs 30 and 31, Recommended Order. Paragraph 69, rejected, not probative. Paragraph 70, adopted in part, Paragraph 23, Recommended Order. Paragraph 72, rejected, irrelevant and not necessary to the issues posed. Paragraph 74, rejected, contrary to the greater weight of evidence and unnecessary. Paragraph 75, rejected, contrary to the greater weight of evidence, Paragraph 53, Recommended Order. Paragraph 76, rejected, contrary to the greater weight of evidence, Paragraph 53, Recommended Order. Paragraph 77, rejected, contrary to the greater weight of evidence, Paragraph 53, Recommended Order. Paragraphs 78 and 79, rejected, irrelevant and unnecessary. Paragraph 80, rejected, not probative. Rulings in Respondent's proposed findings of fact: Paragraphs 2 and 3, adopted in part, Paragraph 9, Recommended Order. Paragraph 12, adopted in part, Paragraph 23, Recommended Order. Paragraph 23, adopted in part, Paragraph 32, Recommended Order. Paragraph 27, adopted in part, Paragraphs 38 and 39, Recommended Order. Paragraph 30, rejected, unnecessary. COPIES FURNISHED: Thomas J. Patka, Esquire Rory C. Ryan, Esquire HOLLAND & KNIGHT 200 South Orange Ave - Suite 2600 Post Office Box 1526 Orlando, Florida 32802 Agusta P. Posner, Esquire Lisa Duchene, Esquire Department of Environmental Regulation 2600 Blair Stone Road Tallahassee, Florida 32399 2400 Virginia B. Wetherell Secretary Department of Environmental Regulation 2600 Blair Stone Road Tallahassee, Florida 32399 2400 Daniel H. Thompson, Esquire Acting General Counsel Department of Environmental Regulation 2600 Blair Stone Road Tallahassee, Florida 32399 2400
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
Findings Of Fact The property upon which Petitioner seeks a variance from the normal requirements for attaining a permit to install an on-site sewage disposal system is found in Leon County, Florida. Specifically, it is located at Lot 4, Block A, Killearn Lakes Unit I. The relative position of this lot in the subdivision is depicted within Petitioner's Exhibit 1 and Respondent's Exhibit 2 admitted into evidence. Respondent's Exhibits 3 through 5 are photographs of the site. Petitioner intends to construct a 1,200 square foot residence. As the photographs depict, some preparation has commenced to the extent of lot clearing and other site work where the home would be constructed. Killearn Lakes Unit I is a pre-1972 subdivision. When the development commenced, it was anticipated that a community sewer system would be utilized, as contemplated by the plans submitted in April, 1971. Subsequently, some lots within the Killearn Lakes Unit I were allowed to be developed with the use of on-site sewage disposal systems, namely septic tanks. There are 150 lots in that category. In 1979, with the advent of certain rules under Chapter 10D-6, Florida Administrative Code, the development was allowed to proceed on the basis of four septic tanks per acre. Over time, Killearn Lakes Unit I experienced a history of failures with on-site sewage disposal systems. The failures were promoted by problems with the "sheet flow" drainage system and its patterns of dispersion of storm water runoff, problems of soil permeability and abnormally high wet season water tables, referred to as perched water tables. This resulted in sewage backing up into homes and flowing out onto the ground in the yards of the residences, into streets and onto adjacent neighbors' lots. The problems experienced were widespread within the Killearn Lakes Unit I. This seepage of raw sewage presented a health hazard, as it would on any occasion. Among the residences confronted with this dilemma was Lot 5, Block X, adjacent to the subject lot. Persons residing in that home had to undertake alternative means of on-site sewage disposal to have that system function properly. This included relocation of the apparatus, mounding, use of an aerobic system, and use of pumps to insure that the waste being disposed did not back up into the conveniences within the home. Witnesses who appeared at the hearing described the series of corrections in some detail. Those witnesses included a former owner of that residence and others who had a technical understanding of the problems in that system. The problems in Killearn Lakes Unit I related to on-site sewage disposal systems became so extreme that the Leon County Commission declared a moratorium on the installation of on-site septic tanks in that development. This occurred in 1987. In order to better understand the problems in the Killearn Lakes subdivision, to include Killearn Lakes Unit I, a study was commissioned. That report is referred to as Killearn Lake Waste Water Disposal Study of June, 1987. A copy of the report is found as Respondent's Exhibit 6 admitted into evidence. It was prepared for the Leon County Board of County Commissioners and prepared by the Leon County Public Health Unit with the assistance of the Leon County Department of Public Works, Leon County Building Department, Ochlockonee River Soil and Water Conservation District, Northwest Florida Water Management District, Tallahassee-Leon County Planning Department, Florida Department of Health and Rehabilitative Services, and Florida Department of Environmental Regulation. Some of the highlights of that report concerned the observation that the septic tank systems do not work adequately and that the more systems that are placed the greater the problems. It noted that the nature of the drainage system in this area is a contributing factor to the failures. The soil's poor permeability, relating to the Dothan series of soils in the area which have slow permeability, contributed to the problem. Perched water tables were found above the expected levels for the wet season water tables. They also presented a problem, as did excessive slopes in some areas. In particular, it was noted that 80% of the lots sampled in Killearn Lakes Unit I had severe limitations on the use of on-site sewage disposal systems. Ninety-three per cent of the lots sampled in Block X received excess runoff from other lots and roads at higher elevations. It was noted that French or curtain drains alone would not significantly reduce perched water table complications because of the low permeability of the soils. It was reported that the overall housing density of Killearn Lakes is not particularly high, but the individual lots are small, approximately 1/4 acre in size. This, taken together with the fact that the "sheet flow" concept of storm water management contemplates that the runoff will cascade across the terrain conforming to its contours, means that some small lots will be inundated. This uncontrolled runoff contributes to septic tank problems in that the tanks fail when the soils around them become saturated. The report notes that if there was a different designed drainage system, the impact on septic tanks would be less. The report notes that if something is not done to modify storm water runoff, drainage problems will persist. Consequently, septic tank failures will continue to occur. Concerning the water tables, the soil testing, which was done in Killearn Lakes Unit I, in which the predominant soil is Dothan type, demonstrated that the borings which located mottling of the soils at the expected level of the wet season water table were inaccurate. These indicators did not correspond to reality in that the true water tables were found 12-20 inches above the expected level of the average high water, as seen in the mottling. This phenomenon was revealed in 42% of the lots evaluated which had Dothan soils. The report recommended, among other measures, that no new sewage disposal system permits be issued in Killearn Lakes Unit I until a storm water system had been constructed and demonstration made that the system would collect storm water and thereby lower the perched water table on specific lots under review. The ultimate response to the question of permits for on-site sewage disposal systems in Killearn Lakes Unit I was spoken to in a Resolution of July 14, 1987 entered by the Leon County Board of County Commissioners. A copy of the resolution may be found as Respondent's Exhibit 1 admitted into evidence. It was resolved that the permits for on-site septic disposal systems be reviewed by the Leon County Public Health Unit on a case-by-case basis in accordance with criteria announced at Chapter 10D-6, Florida Administrative Code. This effectively lifted the moratorium. The subject request for installation of an on-site sewage disposal system was reviewed in keeping with the policy decision set forth in the resolution. Respondent's Exhibit 6 admitted into evidence includes a copy of a survey made by the Homeowners' Association for Killearn Lakes, also admitted as Petitioner's Exhibit 1. As part of the study commissioned by the Leon County Board of County Commissioners, it has some relevance in portraying the dimensions of the problem. Those dimensions are better understood by resort to the color scheme which is found in Petitioner's Exhibit 1. It depicts the problem lots in red color, those lots without problems in green color, and the lots upon which no report was made in orange color, as well as vacant lots, to include the subject lot, which have no color scheme. This latter category indicates no participation in the survey. The door-to-door personal survey conducted by Rod Moeller and testified about at hearing does not diminish the impression of the seriousness of the problem with on-site sewage disposal system failures in Killearn Lakes Unit I, which the 1987 study by the Leon County Board of County Commissioners identified. This survey by Mr. Moeller was in a limited area, more specifically related to the portion of Killearn Lakes Unit I nearby the subject lot. The findings of the 1987 study commissioned by the Leon County Board of County Commissioners are accepted as accurate. Eanix Poole, Administrator of Environmental Health for the State Health Office testified at the hearing. He pointed out that the failure rate in the subdivision under question for on-site sewage disposal systems is 25%, as contrasted with the statewide rate of less than 1/2%. He identified the fact that those failures relate to backups within the home and seepage onto the ground. He verified that these events constitute health problems, especially given the number of failures. He sees the lot in question here as being particularly vulnerable to problems given the drainage patterns and its location at the bottom of two hills. The lot in question receives runoff from the two adjacent lots as well. Mr. Poole sees the subject lot as more vulnerable in the wet season and does not believe that any alternatives that are available for placement of the system on the site would sufficiently alleviate the potential failure of the system to make it a successful arrangement. What he sees is a lot in the path of a natural drainage of tremendous quantities of storm water runoff, coupled with poor soil conditions related to soil absorption or permeability in an area where on-site sewage disposal systems have failed. He remarks that dry soils are needed to treat the sewage and that treatment cannot take place in a saturated soil environment. The effects of seepage of the sewage, according to Mr. Poole, is one which can degrade ground water. Mr. Poole is also concerned that the installation of the proposed on-site sewage disposal system above ground will have an adverse impact on the adjacent lots, one of which has already experienced problems. That refers to Lot 5, Block X. These observations by Mr. Poole, as reported, are accepted. Raymond Collins, an environmental administrator with the Respondent's health program office, also testified at the hearing. He is intimately aware of the problems in Killearn Lakes Unit I. Those problems began to occur in the winter of 1986 and continued into 1987. This related to problems with toilets and the seepage of effluent which was running onto people's property and into the streets. He notes a similar failure rate in Killearn Lakes Unit I to that observed by Mr. Peel when contrasted with the experience statewide. In the aforementioned period he received calls and reports from homeowners concerning system failures. In effect what was happening was that the on-site drain fields in Killearn Lakes Unit I would not accept more input and the raw sewage would bubble up and leach out onto the ground. He personally observed a dozen sites which had failures. He was responsible for the coordination of the July, 1987 study which has been mentioned. As a result of that study one of the steps which he took was to advise that staff investigating the permit application requests should elevate the estimation of the wet season water table by 12-20 inches. Mr. Collins agrees with the recommendation of the individual who was assigned to evaluate the application for permission to install an on-site sewage disposal system at the subject lot, who recommended that the application be turned down. Mr. Collins' description of the experience at Lot 5, Block X, related to his knowledge that the initial system had been replaced with an aerobic system, which also proved to be an inadequate on-site sewage disposal system. In 1988, he went to the home of the person living on that lot, and the aerobic system was not working. There was a light rain on that day, and there were problems in the drain-field area. When a soil boring was made to a depth of two feet effluent poured out. The perched water table had risen to a point in the bottom of the drain field, such that when a hole was punched, it provided a conduit for pressure to be relieved. The drain field that was experiencing this problem was not the original drain field. It was a replacement drain field. The drain field being observed was in the front of the lot, right below the ground. The suggestion to alleviate the problem was to move the drain field to the side of the yard and elevate it and install a series of small-diameter pipes. A pump was also needed to move effluent into the drain field, thus, avoiding a backup of the system into the home. He is unaware of any recent failures in the system at Lot 5, Block X. Mr. Collins emphasized the need for soil to remain unsaturated to provide effective treatment and that 24 inches of unsaturated soil is the minimum amount which would be acceptable. Mr. Collins commented about the nature of the subject lot and the fact that other lots drain through it. Mr. Collins commented that the design of the proposed septic tank does not assure success in the treatment of the waste disposed. Unlike the expert of the Petitioner, Mr. Peel, the problem is not that solids are blocking up the system. It is the failure of the soils to accept the volume of water which is being released from the chambers of the septic tank into the drain field. Mr. Collins does not believe that the use of water-saving appliances in addition to the limited size of the home to be built on the subject lot, installation of an aerobic system, and installation of an above-ground system, as proposed, would be successful and not pose a health risk from system failure. The problems would continue to be drainage patterns and poor soils. His remarks, as reported, are accepted as accurate. Terese A. Hegg, Environmental Specialist I with the Respondent's Leon County Public Health Unit, reviewed the application for variance to install the on-site sewage disposal system. She was familiar with the history of problems in Killearn Lakes Unit I before undertaking this assignment and has made more than 50 evaluations in that development. She observed that the "sheet flow" drainage of storm water does not provide reasonable management because it does not drain normally. She is aware that the wet season water table is as much as 20 inches above the normal indicators, as seen through mottling. Her analysis of this site is under the auspices of those requirements announced in Chapter 10D-6.044, Florida Administrative Code, having in mind that the subdivision plat was made before 1972. This includes an examination of the soil characteristics, history of flooding, and water table evaluations. At this site, she noted the poor permeability of the soil. She did soil borings to confirm the nature of the soils and to identify the water table. She took into account the abnormal perched water table that is above what the mottling would indicate as being the wet season water table. Ms. Hegg is concerned that the system on the adjacent lot, which is now functioning adequately, would not function adequately if the subject system was installed. She noted that the drainage pattern from the neighboring lots was toward the subject lot and that water would come from the left and the right lots adjacent to this lot, corresponding to Lots 5 and 3 as you face them. The drainage pattern would then proceed beyond Lot 4 and into a green area. In making her assessment of this application, she was aware of the problems with the on-site sewage disposal system at Lot 5, Block X. The appearance of saturated soil in the entire length of the boring and standing water on the lot is an indication of problems with percolation. The effluent will flow out and onto the ground if these soils are saturated. From her observations and based upon the history of Killearn Lakes Unit I and its failures regarding on-site sewage disposal systems, Ms. Hegg does not believe that the proposed system would successfully address sewage treatment and would promote a risk of on-site sewage disposal system failures for adjacent lots. Ms. Hegg acknowledged that the storm water flows could be diverted; however, she points out that the subsurface water cannot be diverted. Her account of this site and the acceptability of the request for variance as reported is accepted as accurate. Given the soil conditions and the wet season water table expected at this site, the proposed system will not present an adequate unsaturated soil depth for treatment of the sewage and untreated sewage may be expected to seep or leach out onto the ground. On May 22, 1990, Mr. Collins had written to Dr. Richard G. Hunter, Assistant Health Officer for Environmental Health, recommending the denial of the variance request. A copy of that correspondence may be found as Respondent's Exhibit 7 admitted into evidence. It details reasons which are similar to those described in this Recommended Order. As a consequence, even though the Advisory Review Variance Board had looked with favor upon the request for variance, that variance was denied by action of Dr. Hunter on May 30, 1990, which relied upon the insights of Mr. Collins, as described in his May 22, 1990 correspondence. A copy of the letter of denial may be found as Respondent's Exhibit 8 admitted into evidence. The purpose of this hearing was not to examine whether Respondent had abused its discretion in denying the variance. The reason for the hearing was to allow the parties to present their points in an adversarial setting, which allowed each party to explain its viewpoint anew. That was done, and the analysis provided by this recommended order ensued. In deciding the facts, these representations have been made with due regard to the remarks of James Earl Peel, an expert in the design of on-site sewage disposal systems, who had on his staff, Gary L. Wood, P.E. His methods in analyzing the issue of the suitability of the installation of an on-site sewage disposal system at the subject site do not coincide with the methods contemplated in Chapter 10D-6, Florida Administrative Code, which controls. This is especially significant in his approaches to soil characteristics and location of the wet season water table. As noted above, his belief that the problem is one of distribution of solids from the septic tank into the drain field overlooks the more significant problem of water volume discharge from the septic tank into the drain field. In fact, Mr. Peel indicated that he is unfamiliar with the requirements of septic tank design, as described in Chapter 10D-6, Florida Administrative Code. On balance, Mr. Peel's reports, in Petitioner's Exhibits 3 and 4 admitted into evidence and his in-hearing testimony, do not persuade that the system he recommends can be successfully operated at the subject site. His presentation and the overall presentation of Petitioner do not create a reasonable expectation that the system will not fail and create health hazards for the residents of Lot 4, Block X, and others in the vicinity. It is recognized that this lot owner faces a hardship that was not caused by Petitioner. It is also recognized that, pursuant to the stipulation of the parties, there is no intention by any entity to install a community system of sewage disposal. It is further recognized that there are no alternative methods that would seem to be successful in addressing the problem of the treatment of the sewage, as related in the previous findings. On the other hand, the discharge that could be expected from this subject system would bring about a condition in which the effluent presented a health risk to this applicant and other members of the public and has the potential to significantly degrade the ground or surface waters, although this latter circumstance has not been documented on other occasions and was not found to exist in the July, 1987 study commissioned by the Leon County Board of County Commissioners. In that report, it was specifically found that the surface water had not been compromised by the on-site sewage disposal system failures described in the overall report.
Recommendation Having considered the foregoing Findings of Fact, Conclusions of Law, the evidence of record, the candor and demeanor of the witnesses, and the pleadings and arguments of the parties, it is therefore, RECOMMENDED that a Final Order be entered denying Petitioner's request for variance from permit requirements and permission to install an on-site sewage disposal system at Lot 4, Block X, Killearn Lakes Unit I. DONE AND ENTERED this 20th day of November, 1990, in Tallahassee, Leon County, Florida. CHARLES C. ADAMS, Hearing Officer Division of Administrative Hearings The DeSoto Building 1230 Apalachee Parkway Tallahassee, FL 32399-1550 (904) 488-9675 Filed with the Clerk of the Division of Administrative Hearings this 20th day of November, 1990. APPENDIX TO RECOMMENDED ORDER IN CASE NO. 90-4456 The following discussion is given concerning the proposed facts of the parties: In the discussion of the testimony of Mr. Poole, the relevant portions of that testimony are reflected in the facts found in this recommended order. Under the heading of testimony said to be attributable to Ms. Hegg, at paragraph 1, while it is recognized that a system might be installed that might not call for diversion of storm water onto adjacent neighbors' properties, the problem on site would remain and would be sufficient reason to reject the application. Moreover, it is not clear that it is the intention to install a system that would divert storm water from adjacent properties. Paragraph 2 under this heading is rejected in its notion that storm water would not have an influence on the proposed system. Paragraph 3 is rejected. Paragraphs 4 and 5 do not lead to the conclusion that sufficient unsaturated soils would be available for the treatment of disposed sewage during the wet season, nor does the representation at paragraph 6. Paragraph 7 under that heading is contrary to facts found. The paragraphs under the reference to James Earl Peel, in those five paragraphs, while accurately portraying the opinion of Mr. Peel and Mr. Wood, does not lead to the conclusion that the application should be granted. Under the heading "Rod Moeller" in the first paragraph, the information provided at hearing and under weather reports does not satisfactorily establish what the rainfall circumstance may have been at the subject property 72 hours before January 24, 1990, as referred to in paragraph 1, nor can it be said that the rain experienced in the overall area contemplated by the attached weather report to the argument by Petitioner was a 25-year storm event. The comment at paragraph 3 under this category that the on-site sewage disposal systems in neighboring lots are functioning fine since modifications in the advent of hurricane "Kate" is contrary to facts found. Under the heading "Ray Collins" in paragraph 1, this proposed fact has no relevance in that the question is the appropriate function within Killearn Lakes Unit I, not at an undisclosed site away from that area. Respondent's Facts These facts are subordinate to facts found. Copies furnished to: Sam Power, Department Clerk Department of Health and Rehabilitative Services 1323 Winewood Boulevard Tallahassee, FL 32399-0700 Linda K. Harris, Esquire General Counsel Department of Health and Rehabilitative Services 1323 Winewood Boulevard Tallahassee, FL 32399-0700 Rod Moeller, Authorized Representative Mallard Cove Construction 14261 Buckhorn Road Tallahassee, FL 32312 John L. Pearce, Esquire HRS District 2 Legal Office 2639 North Monroe Street Suite 125-A Tallahassee, FL 32399-2949
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 issue is whether Respondents should have an administrative penalty imposed, take corrective action, and pay investigative costs for allegedly maintaining a solid waste management facility without a permit and disposing of solid waste in an area subject to periodic or frequent flooding.
Findings Of Fact Based upon all of the evidence, the following findings of fact are determined: Background DDD is a corporation registered to do business in the State of Florida. Its president and sole director is William H. Stanton, Jr. The corporation is engaged in the business of "mobil recycling activities" (reduction recycling services for customers). Mr. Stanton owns a two-acre tract of property located in Section 26, Township 28S, Range 24B, on the northwest corner of Mustang Road and Longhorn Drive, Lakeland, Florida. The property is zoned for heavy industrial uses and was formerly used in some form of phosphate mining operations. The Department is the agency charged with the duty of administering and enforcing the provisions of Chapter 403, Florida Statutes, and rules promulgated thereunder. Based upon a complaint made by a Polk County Health Department employee, on October 8, 2001, a Department enforcement coordinator, Steven G. Morgan, inspected Mr. Stanton's property and observed that Respondents had filled and compacted an approximate 150 foot by 300 foot area of the site with 3 to 5 feet of "wallboard type material," which consisted of "both ground up and large pieces of wallboard." In the middle of the filled area was an additional pile of the same material around 20 to 25 feet high. Petitioner's Exhibits A, D, and E are photographs which provide an accurate representation of the site on the date of the inspection. Based on a visual inspection, but without having the benefit of his own laboratory analysis,2 Mr. Morgan concluded that the material was a solid waste made up of discarded industrial products. Under Department rules, the deposit of solid waste on such a site requires a waste facility management permit from the Department. A check of Department records indicated that Respondents do not hold a permit to operate a solid waste management facility. (DDD does hold a valid air pollution permit for grinding concrete.) During his inspection, Mr. Morgan also observed that the land adjacent to the filled area was wet, had a lower elevation than the compacted area, and contained small pockets of standing water. This was confirmed by photographs received in evidence as Petitioner's Exhibits D and E. A DDD employee who was present on the site during the inspection indicated that approximately 900 truck loads of the material had been transported to the site from Plant City after Mr. Stanton had "lost" a lease on the property on which the material had previously been placed. This was confirmed by Mr. Stanton who arrived at the site shortly after the inspection began, and who indicated that he intended to use the compacted wallboard as a sub-base (or foundation) for a wallboard recycling facility. A second site inspection by Mr. Morgan conducted on February 5, 2002, confirmed that the conditions (regarding the piles of fill material but not the standing water) at the site were unchanged from those found on October 8, 2001. On that visit, Mr. Morgan observed the site from his automobile but did not walk the property. Two other site visits were made, one on June 19, 2002, by other Department personnel. Except for a photograph (Petitioner's Exhibit C) dated June 19, 2002, which indicates the piles of material were still intact and had not been removed, the results of those inspections are not of record. Shortly after the initial inspection, the Department's Tampa District Office issued a warning letter to Mr. Stanton describing Mr. Morgan's observations and outlining the potential violations. The letter also invited Mr. Stanton to resolve the matter informally and to present a corrective action plan to mitigate the site. When the matter could not be resolved informally, the Department issued its Notice on October 10, 2002, alleging that Respondents had operated a solid waste facility without a permit and had deposited solid waste in an area prone to flooding. Even though the matter was not informally resolved, Mr. Stanton has cooperated with the Department in good faith throughout the regulatory process. The Material on the Site Invoices received in evidence reflect that the source of the deposited material was James Hardie Building Products in Plant City, Florida, and that the material was described on the invoices as "Dry Waste Material," Wet Waste Material," and "Foreign Material." James Hardie Building Products manufactures HardieBoard, which is a one-half to one-inch thick concrete formulated product used in the construction of homes and other buildings, and HardiePipe, which is used in road and bridge construction, culverts, storm sewers, and concrete pipes. The material being deposited was material used in the manufacture of HardieBoard. Mr. Stanton's long-range plans are to grind up, or recycle, the material (after all necessary permits, if any, are obtained) and then sell it to other persons, including cement manufacturing plants in the area, who will then use it for a variety of purposes, including subbase and base material, cement and concrete re-additive, and cement production. HardieBoard (as well as HardiePipe) is a variable mixture of Portland cement, water, fine silica sand, less than 10 percent cellulose (a non-toxic organic material commonly added to such products as ice cream, shampoo, baby diapers, and rayon clothing), and less than 10 percent of inert materials. The cellulose fibers are added to the concrete to avoid cracking and shrinkage and to reduce the weight of the product. Unlike concrete used for driveways and the like, HardiBoard does not have any large aggregate. Disposal of Solid Waste and Clean Debris Florida Administrative Code Rule 62-701.300(1)(a) prohibits the storing, processing, or disposing of solid waste except at a permitted solid waste management facility. In addition, no solid waste may be stored or disposed of "[i]n an area subject to frequent and periodic flooding unless flood protection measures are in place[,]" or "[i]n any natural or artificial body of water including ground water." Fla. Admin. Code R. 62-701.300(2)(d) and (e). These requirements form the basis for the charges in the Notice. Florida Administrative Code Rule 62-701.200(113) defines solid waste in relevant part as "discarded material, including solid, liquid, semi-solid, or contained gaseous material resulting from domestic, industrial, commercial, mining, agricultural, or governmental operations." Section 403.707(2)(f), Florida Statutes (2003), provides, however, that a permit is not required for "[t]he use of clean debris as fill material in any area." See also Fla. Admin. Code R. 62-701.220(2)(f). "Clean debris" is defined in Florida Administrative Code Rule 62-701.200(15) as: any solid waste which is virtually inert, which is not a pollution threat to ground water 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. The term includes brick, glass, ceramics, and uncontaminated concrete including embedded pipe or steel. The term "virtually inert" is not defined by statute or rule. However, the parties agree that in order for a material to be "virtually inert," it must have no potential for leaking contaminants into the groundwater. In addition, if a deposited material releases contaminants into the groundwater thereby posing a threat to human health, it is considered a "threat to [groundwater]" within the meaning of the rule. The rule also provides that the material must not be a fire hazard. Finally, if a material decomposes over time after being used as fill, and releases contaminants into the groundwater, it is not "likely to retain its physical and chemical structure under expected conditions of disposal or use." Therefore, if a material has no potential for leaking contaminants into the groundwater, is not a threat to groundwater, is not a fire hazard, and is not likely to decompose over time, it constitutes clean debris and is exempt from the waste management facility permitting requirements. As noted above, Florida Administrative Code Rule 62- 701.200(15) identifies four materials that are considered to be clean debris: brick, glass, ceramics, and uncontaminated concrete. If a waste product is classified as uncontaminated concrete, it constitutes clean debris and may be used as fill without a permit from the Department. Further, clean debris may be deposited in an area subject to frequent or periodic flooding so long as flood protection measures are taken, or in a natural or artificial body of water so long as other appropriate permits (such as an Environmental Resource Permit) are obtained. Here, the central issue is whether the material deposited on Mr. Stanton's property is solid waste or clean debris. This issue turns on whether the material is virtually inert, is not a pollution threat to groundwater 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. Assuming these criteria are satisfied, the material is exempt from Department permitting requirements for solid wastes. On this issue, the Department contends that the material is not virtually inert and is unlikely to retain its physical and chemical structure. Conversely, Respondents assert that the material is clean debris and falls within the category of uncontaminated concrete. Is the Deposited Material Clean Debris? In determining whether a material is virtually inert, or is a pollution threat to ground or surface waters, two extraction procedures have been sanctioned by the United States Environmental Protection Agency to assist in the measurement of the amount of contaminants that will leak from a material: the Toxicity Characteristic Leaching Procedure (TCLP) and the Synthetic Precipitation Leaching Procedure (SPLP). Under both procedures, the material being tested is ground up into small sand-size particles, mixed with an extraction fluid, and tumbled for 18 hours in a rotary agitator while the liquid solution extracts various metals that are found in the solids. The extracted liquid solution is then filtered and analyzed to determine the concentration of metals actually leached from the solids. Under state water drinking standards found in Table 1 of Florida Administrative Code Chapter 62-550, the maximum contaminant levels for chromium and barium (stated in milligrams per liter (mg/L)) are 0.1 mg/L and 2 mg/L, respectively. In reaching its conclusion that the fill material is a solid waste, the Department relied principally on certain tests of the material run by various laboratories between 1998 and 2000, which showed that the amount of chromium and barium leaking out of the product exceeded the State drinking water standards. See Petitioner's Exhibits K, L, M, and O. However, in every one of those tests, the laboratories used the TCLP, rather than the SPLC, which produced a worst case scenario. For the reasons stated below, the TCLP is not the appropriate procedure to be used for this purpose. The TCLP is the more aggressive of the two procedures, uses a much harsher solution than the SPLC, and generally leaches higher concentrations of metals. However, its principal purpose is to determine whether a material should be classified as a hazardous waste based on its leaching properties or characteristics. Using it to predict whether a material will leach into ground water is inappropriate because it will "leach things out in the laboratory that will never leach in the field." This is because it does not mimic conditions in the field and is "just not supposed to be used for this purpose." Therefore, TCLP leachate values should not be applied to drinking water standards. Conversely, the SPLC uses a less harsh solution during the preparation process, evaluates the potential for leaching metals into ground and surface waters, and is designed to provide a more realistic assessment of metal mobility under actual field conditions. In other words, the SPLC simulates what would happen if the sample were exposed to groundwater and rain to determine if under those conditions metals might leach into the water system below. Therefore, the SPLC is the more appropriate procedure to use here to determine whether the HardieBoard material will leach certain metals into the groundwater at levels that exceed State drinking water standards. Even various Department guidance documents provide that the SPLC (rather than the TCLP) should be used to determine if a material will leach metals into the ground water. See Respondents' Exhibits M, N, and O. Respondents' witness Foster collected three samples of HardieBoard deposited by Respondents at another site and submitted them to PPB Environmental Laboratories, Inc., in Gainesville, Florida, for a clinical analysis using the SPLC test. Those results, which have been accepted as being reliable,3 indicate that none of the leachate concentrations for arsenic, barium, cadmium, chromium, lead, mercury, selenium, and silver exceed (or even approach) the drinking water standards. Therefore, the material is virtually inert, and the groundwater quality will not be adversely impacted by use of this material as fill. The parties agree that the material is not a fire hazard. Prior to depositing the material, Mr. Stanton used a commercial waste reduction machine (a Smorcazy Bandit Beast 3680 Horizontal Trough Grinder) to grind or pulverize some of the material into fine particles. As noted earlier, a small amount of cellulose fibers are added to the product during the manufacturing process. The Department contends that after the grinding process occurs, these fibers will separate from the remaining fine particles and dissolve into the ground water. Because of this separation, the Department asserts that the material does not retain its physical or chemical structure after being deposited onto the property. Although cellulose fibers are added to the product during its preparation to strengthen the material (and have been added by cement manufacturers since the 1920s), they are distributed throughout the matrix in the material. This means that the fibers become "part and parcel of the mixture" and will not deteriorate, fall out, or leach out of the material even after routine grinding processes, such as that done by Respondents. As such, the cellulose is not biodegradable, and there is no concern that the cellulose will dissolve into the groundwater. Indeed, HardiePipe, which is used in the construction of culverts, storm sewers, and drainage pipes and has essentially the same constituents as HardieBoard, was approved by the Florida Department of Transportation in 2001 for use on State road and bridge projects. Therefore, it is found that the fill material will retain its physical and chemical structure after being deposited onto the ground. Expert testimony by Dr. McClellan established that the material meets the general definition of concrete, and because it is uncontaminated, it should properly be classified as uncontaminated concrete. As such, the material is clean debris and is not subject to the Department's solid waste management permitting requirements. Finally, the Department points out that the compressive strength (measured in pounds per square inch (PSI)) is much greater for concrete used in driveways than for HardiBoard (2500 PSI versus 20 to 30 PSI), and therefore Hardiboard is not a true concrete product. While the PSI values are indeed substantially different, the load bearing ratio or compressive strength of the material does not determine whether a material falls within the generic category of concrete. Water Issues As noted above, if a material is classified as clean debris, it may be deposited into an area prone to flooding or in a natural or artificial body of water, including groundwater (subject, of course, to other unrelated requirements or safeguards). There is no evidence that the filling occurred in a "natural or artificial water body," or directly into the groundwater. In addition, the evidence demonstrates that in October 2001, the ground next to the filled area had small pockets of standing water measuring no more than a few inches deep. However, when the inspection was made, and the photographs taken, Polk County was experiencing rather heavy rainfall, presumably due to the El Nino phenomenon. Whether these conditions (pockets of standing water) exist on the property only during the rainy season is not of record. Further, prior to the filling, Mr. Stanton contacted both the Southwest Florida Water Management District and the United States Geodetic Survey and he asserted, without contradiction, that neither agency indicated that his property was prone to flooding. In any event, even assuming that the area is subject to "frequent and periodic flooding," the permit requirements or other necessary safeguards, if any, associated with filling clean debris in such an area are not the subject of this proceeding. Investigative Costs A Department representative spent 66 hours investigating this matter for the Department. At a then-hourly rate of $18.54, this totals $1,223.64 in investigative costs. The reasonableness of this amount was not disputed by Respondents.
The Issue Whether permit application SWO 13-5152, should be granted under Chapter 403, Florida Statutes. This case involves the application of Respondents City of North Miami and Munisport, Inc. to Respondent Department of Environmental Regulation (DER) for an operating permit under the provisions of Chapter 403, Florida Statutes, and Chapter 17-7, Florida Administrative Code, to operate a sanitary landfill located in North Miami, Florida. DER granted provisional approval of the application by the issuance of a Notice of Intent to issue the permit on January 27, 1978. Petitioners filed the instant petition of February 13, 1978, challenging the issuance of the proposed permit. Final hearing herein was originally scheduled for April 7, 1978, but at the instance of the parties was continued and reset to commence on October 18, 1978. During the course of the final hearing, 29 witnesses presented testimony, including six public witnesses. (List of public witnesses - Hearing Officer's Exhibit 3) A total of 35 exhibits were admitted in evidence. Three exhibits (Exhibits 5, 13 and 15) were rejected by the Hearing Officer.
Findings Of Fact By application dated November 14, 1977, Respondent City of North Miami, Florida, as owner, and Respondent Munisport, Inc. as the "responsible operating authority" requested Respondent DER to issue a permit to operate a solid waste resource recovery and management facility consisting of 345.90 acres located at 14301 Biscayne Boulevard, North Miami, Florida. The site, known as the North Miami Recreation Development, had been operating as a sanitary landfill under temporary operating permits (TOP) issued by the DER on May 8, 1975 and September 21, 1976. The 1976 TOP provided for an expiration date of July 1, 1977, and contained various conditions designed to give the permittees a reasonable period of time to conform to the DER regulations relative to sanitary landfills. These included standard requirements such as the rendering of reports on the operation of the facility and prohibiting the deposit of raw and infectious waste, or hazardous waste that had not been rendered safe and sanitary prior to delivery. Additionally, the permit conditions required the facility to be so operated that it would cause minimum adverse effects on the environment, such as objectionable odors, contaminated storm water runoff, or leachates causing degradation of surface of ground waters. Further, the permit provided for a three-month review program after its issuance to consider the feasibility of dumping solid waste in 63 acres of submerged land subject to previous filling with clean fill and/or construction debris, filling of land above mean high water with garbage either above clean fill or above trenches filled with wood and construction debris and covered with clean fill, and a six-week period of weekly water quality monitoring at agreed to sites for analysis by both permittees and the Dade County Environmental Resources Management (DERM). The permit further prohibited the placement of refuse waterward of the mean high water line or in trenches cut below the natural ground water table. (Exhibits 1, 4). By letter of January 27, 1978, DER gave notice to the applicant of its intent to issue the requested operation permit for the solid waste disposal facility and stated therein the following reasons for its determination: The solid waste disposal site is in the public interest. The Department feels that the site will not substantially affect the water quality or interfere with the area's wildlife. The applications and plans for this facility have been evaluated and found to be in conformance with Chapter 403, F.S., Chapter 17-4, FAC, and Chapter 17-7, FAC. The letter stated standard conditions to which the permit would be subject, including special conditions that had been noted in the 1976 TOP. It also prescribed specific conditions that no solid wastes could be placed within 30 feet of any existing or future lake area, no dumping below water at any time nor in any dewatered excavations, and that a quarterly water quality monitoring program at monitoring wells No. 4 through 12 be sampled for specified substances. Proposed Condition 16 stated as follows: Solid waste shall be deposited in locations consistent with those approved in the Army Corps of Engineers' dredge and fill permit #75B-0869. No solid waste shall be deposited in the areas commonly known as the wetlands and transitional zones of said wetlands, as shown on the attached map. Subject to the Corps approval of proposed modifications to permit #75B-0869, a revised DER solid waste permit will be issued consistent with the approved modifications. A sketch of the landfill site purporting to designate the landfill deposal area, wetlands and transitional zone, and mean high water line was attached. (Exhibit 3) The Petitioners consist of the Florida Audubon Society, which has some 2,000 members residing in Dade County, Tropical Audubon Society, which is affiliated with Florida Audubon Society; Keystone Point Homeowners Association, Inc., comprised of approximately 425 owners of mostly waterfront or canal homes in North Miami within a mile of the landfill site; Thomas Pafford, North Miami, Florida, who uses the waters of Biscayne Bay and nearby wetlands for recreational purposes; and Maureen B. Harwitz, who resides within a half mile of the landfill site and uses Biscayne Bay and the mangrove preserve adjacent to the landfill site for recreational purposes. Members of the above-named organizational groups use the waters surrounding the landfill site for recreational purposes and are concerned that the waters and fish and animal life therein will be adversely affected if the operation permit is granted. (Testimony of Lee, Brown, Pafford, Lippelman, Harwitz) Munisport has been operating the North Miami landfill under a lease with the City of North Miami since approximately 1974. The ultimate aim is to convert the area into a recreational complex consisting of golf courses, club house, and other sports facilities. The site was used as an unregulated dump for many years prior to initiation of the Munisport operation. The site has been the subject of previously issued state and Corps of Engineer dredge and fill permits which are not the subject of this proceeding. The landfill site occupies an area generally between Northwest 135th Street on the south and Northwest 151st Street on the north. It lies between Biscayne Boulevard on the west, and state mangrove preserves and land of Florida International University on the east. It is less than a mile to Biscayne Bay on the east side of the landfill. The nearest point of entry is in the southeast area where Arch Creek empties into the Bay. At this time, Munisport has filled approximately 210 acres at the site with ten feet or more of fill material. A final cover has been completed over about 70 acres of this land and a golf course is presently being constructed. Pursuant to the dredge and fill permits, five lakes approximately 35 feet deep are nearly completed and some six or seven more are to be dug in the future pursuant to those permits. These lakes are separated from the solid waste by a 30 foot wide dike of clean fill. Although some cover material has been trucked to the site, about 1.6 million cubic yards of fill from the excavated lakes have been or will be utilized in cover operations for the landfill. The solid waste layer averages 15 feet in depth and lies about two feet above the ground water table. About 230 acres lie within the upland fill area above the mean high water line which is not within the area of jurisdiction of the Army Corps of Engineers. The mean high water line has been established by appropriate procedures under Chapter 177, F.S., and the surveying procedures were approved by the Department of Natural Resources on April 6, 1978. Although not stated in the Notice of Intent to issue the requested permit, DER intends to restrict the life of any permit to the time when the Metropolitan Dade County Resources Recovery Facility commences operation in approximately two years. The applicants and Dade County also have a memorandum of understanding to this effect. (Testimony of Stotts, Checca, Exhibits 1, 2, 35, 36, Hearing Officer's Exhibit 1) Munisport receives solid waste from a variety of firms, institutions, and surrounding municipalities. Its procedures are for vehicles to enter and exit the site from an access road leading to Biscayne Boulevard. A sign is located along the road indicating the operating hours, fee schedule, waste restrictions and other pertinent information. A large portion of the site is virtually inaccessible due to dense mangroves and mosquito control canals and ditches. At the check-in gate, a cursory inspection of vehicle loads is made by Munisport personnel who check the contents for quantity. Each load is directed to a designated place at the site where Munisport employees spread and compact the waste. At this stage, they are instructed to look for any unauthorized materials, such as hazardous and infectious waste. If such wasted is found, the offending party is required to remove it from the site. compactors and bulldozers push the solid waste to the face of the landfill and spread it out to facilitate compaction. During the hours of 6:00 P.M. to 6:00 A.M., a watchman is on duty at the site to accommodate customers. If less than four or five truckloads arrive during the night hours, the material is not processed. If a larger quantity is involved, a Munisport employee moves and covers the material prior to the following workday. Due to the high ground water tabled, the area method is used for filling the site. This is a procedure by which refuse cells are constructed in lifts not to exceed ten feet in vertical height. They are composed of cells which constitute a one-day quantity of refuse. Six inches minimum cover of clean fill is applied daily, and a one foot intermediate cover is applied within a year after compaction. The cells are compacted in two-foot layers and, upon completion of a particular area, a minimum of two feet of final cover is applied. A dike constructed of compacted limerock borders the east side of the site and basically constitutes the present mean high water line. It is designed to protect the adjoining 129 acres of mangrove preserve and Biscayne Bay from any adverse water quality which might occur from runoff of degraded waters from the landfill site in the event of contamination. (Testimony of Haddad, Checca, Exhibit 1, 9) The shallow soil underlying the landfill at depths ranging to almost ten feet consists of a combination of organic matter and debris from prior dump use, muck, and sand. Soil borings taken at the site show that limestone or calcareous rock known as Miami oolite is about eight feet below the soil layer. At this depth is found the Biscayne aquifer that carries the unconfined ground water in the area. The aquifer is approximately 160 feet deep under the site and constitutes the major source of water supply in Dade County. The gradient of the water table for the landfill site runs in a southeasterly direction toward Biscayne Bay. Approximately 75% of the surface soil layer consists of organic muck, whereas in approximately 25% of the area, which was previously filled in the southern and westerly portions before commencement of the Munisport operation, the soil is primarily of a sandy type. (Testimony of Checca, Pitt, Exhibit 1) Leachate is produced in sanitary landfills by precipitation that percolates down through decomposing refuse cells and picks up polluting substances created from the decaying solid waste. It can form a "plume" or "bubble" that takes the course of least resistance in flowing laterally or vertically through a landfill site. The strength and concentration of the leachate is dependent upon various factors including the composition, compaction, and the age of decomposing refuse, and the amount of water being introduced into the area. As it passes slowly through the soil beneath the solid waste material, the unsaturated soils act as filters and permit ion exchange which reduces the quantity of contaminants. Dilution takes place where leachate comes in contact with ground water and leachate movement occurs gradually through the ground water aquifer in its direction of the flow. The presence and movement of leachate normally can be detected by analysis of ground water samples taken at various places throughout the landfill site. (Testimony of Checca, Pitt, Coker, Exhibit 1) Commencing in 1975, a monitoring program was instituted at the sanitary landfill to determine its effects on the ground water regime. A number of monitoring wells at various depths were constructed at different sites at the landfill, and samples were withdrawn and evaluated periodically to determine the types and degrees of pollution being generated by the landfill. Background samples were also obtained from wells off the site to establish the general character of water quality in the area and to compare these samples with those obtained from the site. Additionally, "grab" samples were taken of water from the bay and nearby canals and wetlands. Locations of the background and sampling wells were established by the applicants in conjunction with the DER and the Environmental Protection Agency. To determine the amount of leachate that probably would be generated at the site, the "water balance method" of computing the estimated time required to produce leachate, as well as the quantity that probably would be generated upon completion of the landfill, was made by representatives of the EPA in 1975 utilizing specific climatological and surface conditions at the site. This study indicated that percolation of surface water would increase during the operation of the landfill and before final soil and vegetative cover were in place, and that leachate would occur in about a year in larger quantities than would be produced by a completed landfill. Tests conducted during the ensuing three-year period of both surface and ground water through the monitoring program have failed to produce evidence that water quality is not within acceptable parameters or that water quality in the area surrounding the landfill site has been degraded. No significant differences in the concentrations of various ground water constituents were found between samples obtained at the disposal site and those collected in the adjacent mangrove forest or background areas. Neither was any evidence of contamination from leachate found in samples of surface water collected in the vicinity of the landfill or in nearby natural areas. (Testimony of Checca, Pitt, Linett, Perez, Exhibit 1, Exhibit 33) Three basic factors have undoubtedly accomplished reduction in the amount of leachate generated at the landfill. These are (a) attenuation and filtration of pollutants by unsaturated soils between and beneath the refuse cells, (b) biological assimilation by organisms living within the refuse cells and underlying soils, and (c) dilution upon contact with the ground water. A hydrogeologic study shows that the uppermost 14 feet of the aquifer immediately below the landfill represents only 0.2% of the total discharges with a ground water velocity of less than 0.1 foot per day. This part of the aquifer therefore provides considerable detention time for the water that percolates through the landfill. The strata, as well as the overlying organic marine soils, provide the absorption and assimilation that removes pollutants from the water. After water percolates through this layer, it reaches the highly permeable Miami oolite that carries about 43% of the ground water flow. The effects of soil absorption, filtration through the upper 14 feet of the aquifer, and dilution within the aquifer have demonstrably been sufficient to assimilate the water that percolates through the landfill. It is estimated that the time of travel of ground water from the landfill site to the closest discharge point in Biscayne Bay is approximately 68 years. Although the attenuation capability of the organic muck soil underlying the greater part of the landfill is high, the older area of the site in the southwestern portion which had been filled before the Munisport operation commenced, has no muck and consists primarily of sand with a higher rate of permeability. (Testimony of Checca, Pitt, Teas, Exhibits 1, 33) The fact that the organic muck material under the landfill is not uniform throughout the site, plus the fact that there have been various breaches in the permeable oolite layer below the soil, will, in the opinion of some experts, eventually lead to the generation and movement of a leachate plume into such breaches and ultimately to Biscayne Bay. These breaches consist of the deep lakes at the site, the Arch Creek Canal to the south of the site and a dredged excavation at the exit of that body of water into the bay some 3,600 feet distant from the landfill. Additionally, these experts postulate that the dike located on the eastern border of the site will not prevent leachate from moving into the surrounding mangrove area. It is therefore estimated that in the above ways, large amounts of leachate would enter the bay and adjacent wetlands within a period of five to ten years. (Testimony of Coker, Hudson, Pasley, Browder, Exhibits 12, 14, 29, 30) Although water monitoring at various levels in and at probable discharge points near the site have not found degradation of water quality, the applicants propose to address any future leachate problems in a variety of ways. These include continuous periodic testing of water quality and monitoring wells, excavation of a canal on the upland side of the site to intercept leachate and treatment of any contaminated water therein or by pumping the water to an interior lake for treatment. Based on the particular type of any degradation, chlorination and precipitators would be utilized. Long-range problems will be further reduced by the ultimate construction of the golf courses and placement of final soil and vegetative cover to reduce percolation of surface water. This will be aggravated to an undetermined degree, however, by periodic irrigation of the golf courses. (Testimony of Checca, Pitt, Kelman, Exhibits 1,33) During the early years of the Munisport operation, a number of violations of the conditions of the temporary operating permit occurred, but for the most part these were caused either through simple negligence of landfill personnel, breakdown of equipment, or introduction of unauthorized materials to the site by Munisport customers. In these situations, Munisport usually took prompt and effective action to prevent recurrence and to remedy the problem. For example, on one occasion in 1977, some 12 drums containing residue of a chemical substance deemed to constitute "hazardous waste" was brought into the site by persons unknown and was found leaking into the ground. A number of violations and warning notices were issued to Munisport by the Dade County Department of Environmental Resources Management (DERM), primarily in 1976, involving the placement of tree cuttings and wood scraps into excavations containing water at the south end of the site. These occurred, however, during a period when Munisport was engaging in tests to determine the suitability of such operations in conjunction with DER. Additionally, in 1976 and 1977, Munisport was advised of violations in the placement of garbage in exposed water, uncovered garbage, and delivery of garbage after hours. Munisport has had a continuing problem over the years with the unauthorized delivery of hospital wastes from various customers to the landfill in spite of letters written to hospital facilities and delivery firms cautioning them concerning the prohibition against the introduction of such material to the landfill. DERM personnel concede, however, that the operation has been continuously improved and that it is well-conducted in comparison with other landfills in the country. However, they believe that lakes should not exist in landfills and that the North Miami landfill is too close to the wetlands. (Testimony of Morrissey, Karafel, Sobrino, Haddad, Checca, Exhibits 6-11, 17, 18, 20-24, 27, supplemented by testimony of Pafford and Exhibit 16) In a letter of January 17, 1977, DERM expressed concerns about the Munisport operation to DER. One of these concerns was that leachate would migrate to proposed golf course lakes and the resulting pollution would produce poor water quality. Although 1976 testing of then existing lakes at the site reflected unusually high amounts of fecal coliform, subsequent tests in late 1978 showed very little, but tests again in January, 1979, showed that several lakes were again somewhat high in coliform. Coliform is not considered to be a strong parameter in assessing the presence of leachate and amounts vary considerably from day to day in lake areas. Additionally, great numbers of birds are normally present on the landfill site during operations and contribute in raising coliform readings to some extent. Dade County has a current policy that does not permit lakes to be excavated on landfills operated by the county. (Testimony of Checca, Morrissey, Sobrino, Karafel, Kosakowski, Linett, Newman, Kelman, Perez, Exhibits 17, 19, 20, 24, 25, 31, 32, 37, 38)
Recommendation That a permit be issued to the City of North Miami, Florida and Munisport, Inc. to operate the solid waste disposal facility as described and under the conditions stated in the letter of the Department of Environmental Regulation, dated January 27, 1978, wherein it gave notice of its intent to issue the said permit. DONE and ENTERED, this 13th day of April, 1979, in Tallahassee, Florida. THOMAS C. OLDHAM Hearing Officer Division of Administrative Hearings 530 Carlton Building Tallahassee, Florida 32304 (904) 488-9675 COPIES FURNISHED: David Gluckman, Esquire 5305 Isabelle Drive Ken VanAssenderp, Esquire Tallahassee, Florida Smith, Young and Blue, P.A. Post Office Box 1833 Josepy D. Fleming, Esquire 620 Ingraham Building Marvin Sadur and 25 Southeast Second Avenue Richard J. Potash, Esquires Miami, Florida 33131 2000 L Street NW - Suite 612 Washington, D.C. 20036 Silvia Alderman, Esquire Assistant General Counsel Department of Environmental Regulation 2600 Blair Stone Road Tallahassee, Florida 32301
