Vint hill farms station military history

Interests Aviation. Radio Control Planes. Sim Aviation. Professions Air Crewman. Auto Insurance Agent. Car Salesman. Computer Technician. Drywall Contractor. Health Insurance Agent. Life Insurance Agent. Morse Code Instructor. Notary Public. Police Officer. Truck Driver. Auto Painting. Auto Detailing. House Painting. Vint Hill Farms Station.

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Sim Aviation. Professions Air Crewman. Auto Insurance Agent. The property is in the process of obtaining a stormwater permit and its runoff is being sampled by a private contractor. A portion of the waste stream is recycled through composting of yard wastes e. In the future, the facility also plans to recycle cardboard and office paper to meet Virginia Solid Waste regulations to reduce the solid waste stream by at least 25 percent by From to , all solid wastes were burned and buried in Dump 1.

After , the facility used the Incinerator to reduce the burnable solid waste to ash. The ash and nonbumables were then disposed of in the Fauquier County Landfill. Since the Incinerator shut down in , all wastes, including consttuction debris, sewage sludge, nonfriable asbestos wastes, and ash from the classified documents incinerators, have been transported to the Fauquier County Landfill. From to , construction debris was disposed of in Dump 2 through the authority of Virginia Solid Waste Management Permit Number No other permitted constmction debris landfills are known, although areas with concrete debris, pipe sections, and metal cable were found during the visual inspection.

No further investigation is warranted at these areas due to the inert nature of the wastes. Some solid wastes are removed by nonfacility personnel. The National Capital Interstate AQCR is an attainment area for sulfur dioxide, particulates, carbon monoxide, nitrogen dioxide, ozone, and lead.

VHFS currently does not have any air permits for its air emissions sources e. Classified documents incinerators and heating units less than 3.

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The facility may have to apply for a group air permit by Reisch The emission control program consisted of routine maintenance to ensure operation of equipment at design efficiency. After the Incinerator was shut down and the-steam boilers taken off line, the gasoline USTs were the only reason to continue inspections at the facility. Two single-chambered incinerators are located adjacent to Building lEWD , but only one is operated frequently.

This incinerator bums most of the on Post-generated classified wastes on a daily basis. An old incinerator was located near Building Procurement , but it was removed and scrapped in The ash from the active incinerators is stored in dumpsters and then transported to the Fauquier County Landfill. The facility is complying with AMC regulation to gradually eliminate the use of ozone-depleting substances.

The amount released to the atmosphere was estimated to be , , and 2, pounds, respectively. The facility plans to use fewer CFCs in future years. In February , all of the active USTs and their distribution lines passed a vacuum pressure leak test. However, the only tank in conformance to Federal standards for leak detection, corrosion protection, and overfill protection is the 10,gallon fiberglass gasoline tank in the Vehicle Maintenance Area, which was replaced in The remainder of the tanks will have to receive monthly monitoring and annual tank tightness tests to conform to the leak detection regulations.

All USTs will have to be upgraded or replaced by December to conform to corrosion protection and overfill protection guidelines. The condition of these tanks at the time of their removal, replacement, or abandonment is unknown. However, due to the construction i. Some old septic tanks are located in the northern areas of the facility e. Most were abandoned when sewer lines were installed. The facility is adding a new sewage lift station in the northern area to service Sugar Tree.

The sewage flows by gravity to the lift station and is then carried through a forced main to the Sewage Treatment Plant. The Incinerator has the only remaining "active" septic tank which is currently out of service as previously stated. Currently, VHFS has three water wells in use, which supply the drinking water for the residents and the 2, daily employees. The well depths range from to feet. The fourth well has been shut down and will be restarted after a filter system is installed to remove manganese while the fifth well tested positive for bacterial contamination and is not in use.

The groundwater is treated at the pump houses by chlorination, fluoridation, and with sodium hexametaphosphate for corrosion control before distribution. The program requires that inorganic, radiological, volatile, and microbial contaminants be analyzed for every 3 years on a staggered basis. Since this time, none of the primary contaminants have been detected in the groundwater at levels above regulatory criteria.

However, high concentrations of manganese, sulfate, and carbonate have been detected and cause aesthetic rather than health-related problems. Sampling of Well 1 on September 18, detected gross alpha at However, alpha contamination was not detected during later sampling. An October sampling by VDH did not detect any primary contaminants above the drinking water action levels, and a June sampling showed no bacteriological contaminants. The facility also conducted a sampling of the drinking water at all of the office water fountains in June and the residential tap water in March and June The surveys were conducted in accordance with recently revised drinking water regulations to determine if lead or copper were present in the drinking water above action levels.

The few drinking water tanks that were above the lead action level 0. However, the concentrations of lead and copper in the 90th percentile were below the action levels in each testing cycle and the VDH has authorized VHFS to go to reduced monitoring i. The residential population is Land use in the immediate vicinity of VHFS consists mainly of agriculture mostly horse farms and residential areas. With the exception of a few residences to the north, the majority of residential development is located south of VHFS.

Other land uses that are more commercial and industrial are located closer to the population centers of Warrenton to the southwest and Manassas to the east. According to U. Table Summers are characterized by maritime- tropical winds from the south and southwest, which bring warm, humid air to the region. High- pressure systems often stagnate over the area, creating air pollution episodes several times during the summer.

Winter is characterized by cold, dry, continental polar winds from the northwest. Average temperature at VHFS varies from a monthly low of 1. The average annual rainfall is Most of the facility drains to South Run via intermittent tributaries and drainage ditches as shown in Figure Lake Manassas discharges to Broad Run.

The dam controls the flow into South Run, which can be quite low, as seen during a site visit conducted in September Drainage for the southern part of the installation flows south and east to Kettle Run as shown in Figure The basin is characterized by rolling terrain with moderate to thin residual soil cover above structurally complex rock strata consisting of folded layers of sedimentary and metamorphic rocks co ntaining zones of igneous intrusion ESE Localized topography at VHFS is composed of gently rolling hills with slopes generally less than 10 percent.

Elevations on the installation vary from to feet above mean sea level MSL. The Montalto soil association has developed predominantly on undulating land from fine-grained Triassic diabase. The Montalto unit is best suited for agricultural and woodland uses.

High coarse fragment content and depth to rock are typical limiting factors of this unit. They formed on flat depressed upland and along small drainage ways and developed in residuum from fine-grained Triassic diabase. The soils are considered to be hydric with high water tables. Slopes range from 0 to 2 percent.

They were developed in residuum from Triassic diabase. They may have hydric soil inclusions. Slopes range from 0 to 7 percent. They formed on gently sloping concave uplands and developed in residuum from coarse-grained Triassic diabase. Slopes range from 2 to 7 percent. The Penn-Croton-Bucks unit is the most common in Fauquier County over 19 percent of the coimty and contains the greatest number of soils.

It occurs in the Culpepper basin and is underlain by shale and sandstone. The Penn soils are the predominant soils in the association. The Croton, Kelly, Wadesboro, Calverton, and Bucks soils are less extensive and make up an important part of the association. Minor areas of Catlett soils occur in the uplands, terrace, and first bottom soils along the streams. The soils of the association are evenly distributed throughout the county, with the exception of the Wadesboro, which is mostly found near Greenville. The Penn-Croton-Bucks unit is well-suited for most agricultural uses.

They developed in residuum from Triassic siltstone, shale, and fine-grained sandstone. Slopes range from 0 to 25 percent. They developed in local alluvium washed from Triassic uplands. They are considered to be hydric. Slopes range from 0 to 5 percent. They developed in local wash and residuum from thermally altered Triassic shale. They developed in residuum from Triassic siltstone, shale, sandstone, and conglomerate. Slopes range from 7 to 14 percent. They developed in local colluvium and residuum from red Triassic shale and sandstone. They formed on broad gently sloping ridges and developed in residuum from red Triassic shale and sandstone.

They formed on gently sloping sideslopes and developed in residuiim from bluish-gray thermally altered Triassic shale.

Marking the history at Vint Hill | News | caficefo.tk

This basin is located near the border of the Coastal Plain and Piedmont physiographic provinces and is one of a series of tensionally faulted, graben-like trenches that extend from Nova Scotia to Georgia along the Appalachian moimtain system. The series of trench systems or Triassic Basins was formed by downfaulting as a result of fracturing associated with the Triassic-Jurassic continental split of North America. Geologic material imderlying VHFS consists of shale, siltstone, basalt, and diabase. Metamorphosed homfels, granite, and quartzite also can be found.

Basalts comprise the predominant near-surface rock in the western portion of the installation, whereas the sedimentary red beds are common on the eastern side. Regional faulting has resulted in three mafic intrusions at VHFS. Residual soils have developed from the weathering of underlying bedrock. Bedrock is encountered at depths ranging from a few feet below land surface BLS on the northern side of the installation to 39 feet BLS on the southern side of the installation ESE Two hundred and fifty private wells within a 4-mile radius provide a water source for 2, residents.

In addition, there also are 7 public wells within a 4-mile radius of VHFS that provide a water source for residents. The shallow portion of the aquifer is considered to range from land surface in the low marshy areas along the intermittent streams to 56 feet BLS. The basalt and diabase rocks tend to weather into clays of low permeability. This part of the aquifer is in a fractured bedrock zone that has not been weathered as extensively as the shallow part of the aquifer.

Rocks underlying the imconsolidated and heavily weathered and decomposed bedrock are sandstones, siltstones, basalts, and diabase. Although the primary intergranular permeability of these rocks is very low, extensive fracturing has caused a relatively high secondary permeability. However, these zones are relatively narrow. The shallow aquifer portion and the deeper aquifer portion are connected hydraulically through vertical faults or fractures.

The regional groundwater flow is generally in a northerly direction. The groundwater contours and flow direction for the northern portion of VHFS are shown in Figure The bedrock beneath VHFS exhibits little primary permeability; secondary features such as faulting, fracturing, and weathering are the primary factors in the development of permeability, and thus of groundwater movement. In an extreme situation, all of the groundwater flow may be controlled by a few major fractures, resulting in erratic and often highly complicated flow patterns.

Generalization of overall patterns based on a few widely spaced monitoring points may be misleading in such cases. However, in less extreme cases, secondary, tertiary, and lesser systems of smaller fractures interconnect with the major fracmres, creating a system in which more or less uniform flow may occur. The southern bald eagle Haliaeetis leucocephalus , an endangered species, is occasionally observed at nearby Lake Manassas.

Dump 1 and the Pistol Range are within the floodplain. Approximately 20 acres of wetlands are within a 4-mile radius of the property. Resampling in March conErmed these results. The results of the survey are summarized in Appendix C. Most of the buildings in the survey 74 out of were found to contain asbestos in pipe insulation, floor tile, and wallboard. In addition, asbestos cement piping is present throughout the facility in the water and sewer lines.

Warnings are placed in areas with friable asbestos e. Annual updates of the condition of the ACM are conducted. Both landfills are licensed asbestos landfills. However, before , asbestos wastes were burned with other solid wastes and buried in Dump 1. In , a survey of the identification nameplates was performed by the Directorate of Facilities and Engineers on most of the transformers located within VHFS.

These transformers were located outside various buildings across the installation. The survey identified 45 out of transformers as containing PCB fluid, such as Askarel. Samples of various groups of transformer oils were performed in by Versar and in and by Emmorton Electrical Testing. The tests determined tha t most of the transformer oils contained PCBs. The eight transformers that were above parts per million ppm were removed from service and taken to the Transformer Storage Area in November These transformers had up to , ppm PCBs i.

The facility also plans to resample all of the transformers by to determine the accuracy of the survey and to mark all transformers currently without labels or ones that may be currently mislabeled as containing PCBs Reisch Use of lead-based paint continued at a lesser pace after this time. A Lead Exposure Risk Assessment LERA survey was completed in September of most of the buildings on the facility a total of to group them into high, medium, or low risk categories. The risk level is based on the usage of the building and the condition of the paint. The high risk homes were sampled in March and May and the medium and low risk homes will follow in preceding years.

The lead-based paint was mainly used on the front door and window sills of the brick residences. Buildings with at least 0. The maximum concentration of lead in paint was During a inspection, the U. The ammunition magazine only holds fresh rounds for small caliber weapons and the skeet range and pistol range are used exclusively for shotgun and pistol target practices. However, an unused bazooka round was found on the VHFS property in October and subsequently was detonated in the pistol range with plastic explosives. The description for each facility includes the types and quantities of associated hazardous wastes and materials, the dates of operation, and significant historical events or changes.

This landfill was used for general refuse and installation waste disposal from to During this period, large quantities of household garbage, kitchen grease, lead-based paint residue, organic solvents, waste oil, pesticides, and sandblasting wastes were disposed of in trenches within the 5-acre dump.

Open burning of asbestos sheeting also had occurred until when open burning was restricted and the Incinerator AREE 20 was completed. Operations consisted of trench and fill with trenches 6 to 10 feet deep being excavated and used for burning garbage and other wastes. When a trench was filled with ash and unbumed residue, it was covered and another trench was excavated. When no more trenches could be excavated, trash was burned on the surface of the dump and ash and unbumed residue were spread toward South Run.

When the Incinerator was completed, disposal of burnable wastes was stopped and the site was used only for disposal of construction debris and other hard fill material. The present surface of Dump 1 is 18 feet above the previous land surface ESE DUMP 2 13 ,..

In addition, the facility disposed of approximately 12 tons of household garbage per working day in the dump USAEHA It also is possible that sludge from the sewage treatment plants was disposed of within the dump. Dump 1 has been covered with grass since disposal activities were stopped in The areas surrounding Dump 1 consist of a former salvage yard to the south, a construction material borrow pit to the west.

South Run to the north, and a wooded area to the east. Solid wastes were separated in the former salvage yard to remove reusable and marketable materials e. Numerous buried metallic features and an abandoned gas line were detected by electromagnetic EM surveys in this area. Dump 1 has been the subject of previous site investigations due to its historical waste disposal practices. Based on 30 years of operation at the disposal rates listed above, approximately 9, gallons of paint, 1, gallons of solvents, 15, pounds of sandblasting wastes containing lead paint, and 90, tons of household garbage were burned and buried in the trenches.

To dete rmine the groundwater quality near the site, a groimdwater monitoring program was initiated in This system consists of four groundwater monitoring wells: two are set in the fractured bedrock beneath the landfill to monitor vertical contaminant migration, one is located downgradient and across South Run to determine if contaminants flow under the streambed, and one is upgradient of the landfill to monitor upgradient groundwater quality conditions. These wells are sampled annually for selected metals and volatile organic compounds VOCs.

Leachate from the dump has been observed entering South Run. Considering the types of materials reported to have been disposed of in the landfill, migration of toxic materials may occur. However, surface water samples from a leachate seep and immediately below the toe of the landfill did not detect any primaiy contaminants. The facility also is known as Sewage Treatment Plant 2.

The plant treats and discharges industrial and sanitary wastewaters from VHFS operations. The facility has received sanitary wastewater from kitchens, sinks, and bathrooms , industrial wastewater fromphotographic, painting, laboratory, vehicle washing, and metal etching operations , and surface water runoff through infiltration and inflow. Before , the wastewater was treated by sedimentation and chlorination prior to discharge. Since that time, improvements have been made to the facility to bring the plant into compliance with current requirements.

An ultraviolet UV disinfection system was added in to replace the chlorine disinfection system. The new system would eliminate the residual chlorine formerly discharged as a result of the chlorine contact tank disinfection. Current treatment includes bar screening, grit chamber settling, coagulation with aluminum sulfate alum , flocculation and sedimentation, biological treatment with a trickling filter, secondary clarification, and UV disinfection of the effluent.

The sludges from the settling tank and secondary clarifier are aerobically digested and then discharged to one of four sand drying beds. The drying beds were renovated in to replace the tmderdrainage system and install a roof. Before , sludge was stored in piles onsite near South Run. Currently, the dried sludges are removed every 3 weeks and disposed of in the Fauquier County Landfill. Approximately 10 cubic yards per month of dried and digested sludges are generated and disposed of in the county landfill.

Chlorination is no longer used to disinfect the wastewater and all chlorine has been removed from the STP. Some chlorine is still stored in a storage building near the conunissary Building in case of a malfunction of the UV disinfection system. Currently, the liquid chlorine is only used for the water supply pumphouses and the two swimming pools located on Post.

Canisters of chlorine gas and bags of sodium hexametaphosphate and sodium fluoride for water treatment also are stored in this building. The al uminum sulfate alum used for coagulation is stored in a 6,gallon aboveground fiberglass tank. The tank is housed in a cinder block building that is designed to contain the entire contents of the tank in the event of a rupture. Small amounts of hazardous materials are stored in the STP laboratory Building for analytical purposes. These industrial chemicals and small amounts of toxic wastes e.

Surface water sampling downstream from the STP discharge in August detected These levels exceed Federal and state criteria for protection of aquatic life, but are below criteria for protection of human health. Subsequent sampling in May detected Recent sampling of the surface water has shown further decreases in cyanide concentrations Chesapeake A site investigation is recommended to determine if any residual contamination of silver, chromium, mercury, or cyanide remains as a result of the former sludge piles.

The Warehouse Building reportedly was used to store drums of oil, grease, solvent, paint, acid, and industrial organic chemicals Weston However, at the time of the site visit, the only hazardous substances in storage were industrial cleaners and soaps, spray paint cans, and copier supplies i.

Interviews with the manager of the Warehouse indicated that other hazardous substances may have been temporarily offloaded in the warehouse area, but none were stored in the warehouse building and no spills had occurred Rylander In addition, most shipments of hazardous substances are delivered directly to the receiver e.

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The Warehouse was built in and has a concrete floor. The Warehouse was, at one time, used as a vehicle maintenance area. Two sets of concrete filled pits exist in the Warehouse floor. These pits may have been used as hydraulic lifts and fluid-changing pits. No records exist to indicate whether the pits were cleaned out prior to being filled.

One floor drain, approximately 2 by 3 feet, exists at the south end of the building. The top of the drain is currently sealed off with a wooden board. No records exist to indicate when the drain was sealed at the floor level. The Warehouse sink and water fountain drainpipes run underneath the floor into the floor drain.

An outflow pipe runs south from the drain basin. Information from the ENPA activities regarding the potential for contamination at this AREE was considered insufficient evidence for a site investigation recommendation. The Virginia DEQ has, however, requested that site investigation activities be performed at this site in order to gather data to determine whether hazardous substances are present.

The Auto Craft Shop Buildings and is where military personnel perform maintenance on their private vehicles. The buildings are used to store oil, solvents, and lubricants for these activities. The buildings have concrete floors with no curbs or floor drains to prevent the spreading of spills.

Gasoline and oil spills have been recorded in this area and were cleaned up using absorbents. The gallon steel AST is double-walled and is located under a roof and within a steel containment dike. The dike can contain percent of the contents of the tank in the event of a spill. The tank has two compartments, each clearly labeled, for used antifreeze and waste oil. The used antifreeze, waste oil, and waste solvents are removed by private contractors and recycled.

Drain lines for the vehicle wash rack are connected to the storm sewer which discharges to the field south of the Auto Craft Shop. A grit chamber exists for the settling of solids prior to discharge. Surface water runoff is diverted into a storm sewer drain, which discharges to the field south of the Auto Craft Shop. No previous sampling activities have been conducted in this area to determine if spills from the Auto Craft Shop have impacted the surrounding soils. However, it has been reported that the grass in this area has an oily sheen after a storm event Hitt It is unknown whether releases from the Auto Craft Shop have contributed to this contamination through runoff of solvent, oil, and gasoline spills to the surrounding soils or by infiltration through cracks in the pavement.

A site investigation is recommended in this area to determine if the surrounding soils are contaminated with gasoline, waste oil, solvents, or antifreeze. The building was imoccupied for the next 3 years. The building was then on standby status for the next 2 years. Environmental Protection Agency EPA began photographic operations in July and have used the building until the present.

The facility currently develops, enlarges, and prints aerial photographs in color and black and white for EPA using the Kodak EA5 and R-3 processes. From to , untreated black and white photographic wastewater containing silver was discharged to the Former Photographic Waste- water Lagoon AREE 10 through a 6-inch industrial sewerline. In , the first silver recovery uriits were installed for wastewater pretreatment. These units removed a large portion of the silver in the wastestream. The pond was dredged in to recover silver in the sediments and then filled in.

The influent was then diverted directly into the western tributary of South Run. An ion-exchange system was installed in to remove cyanide, ammonia, phenols, and silver firom the photographic wastewater before discharge. Color as well as black and white processing occurred during this period. From to , the pretreated wastewater was discharged through the industrial sewerline into the western tributary of South Run.

The ion- exchange system was 80 to 90 percent effective in removing cyanide, ammonia, phenols, and silver ESE In October , the industrial sewerline was plugged and the photographic wastewaters were discharged into the sanitary sewer. Before discharge to the sanitary sewer, the wastewaters are treated in an upgraded ion-exchange unit, which can remove 1 K percent of the silver and cyanide.

Two ion-exchange systems, each having two columns with resin-coated beads, are currently used to strip silver thiosulfate or ferric cyanide from the wastewater before discharge to the STP. The beads are periodically regenerated to remove the silver and cyanide. The hazardous wastes include fixing solution containing silver and bleach cleaner containing ferric cyanide. The fixer and the bleach cleaner are treated in the resin columns and discharged through the sanitary sewer.

The nonhazardous color developer was prohibited from discharge to the sanitary sewer because the developer wastewater raised the chlorine requirements at the STP AREE 2. Now that the UV disinfection system is in place, EPA wants to resume disposal of the developer wastewater in the sanitary sewer. STP personnel want a full characterization of the developer wastewater before disposal to the sanitary sewer resumes. The containment building has three compartments with temperature control, spill containment, and ventilation.

Drums of hazardous wastes previously had been stored on the loading dock without containment. Floor drains in this room are plugged imtil spills or floor washings occim. The spills or washwaters can be directed to two gallon polyethylene holding tanks in the basement or to the sanitary sewer, depending on the nature of the chemicals involved. Due to the age of the pipeline and the nature of the acidic wastewaters, leakage is suspected. In addition, silver and cyanide sludges may still be in the pipeline.

Infiltration of groundwater into the pipeline may carry these sludges to the surrounding soils and groundwater. A geophysical survey of the vitrified clay pipeline in provided a qualitative estimate of the leakage from the industrial pipeline. The photographic wastewaters contained high amounts of solids and metals which, theoretically, would be detected by an EM survey.

However, it would take an extremely large quantity of contamination to be detected using an EM survey. Therefore, the results are considered inconclusive. One bedrock monitoring well was installed in adjacent to the sewerline in a location where the EM survey found a ground conductivity anomaly. Contaminants above Federal MCLs have not been detected in samples collected from this shallow well and the two nearby drinking water supply wells Well numbers 1 and 2, at and feet in depth, respectively.


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A site investigation is recommended to confirm that no photographic wastewaters have leaked from the industrial sewerline. However, the hazardous waste storage building for the EPIC Building requires no further investigation because no evidence of releases of hazardous materials from the building exists.

The Health Clinic Budding has been used since for medical and dental services for installation and other military personnel. The infectious wastes generated at the Health Clinic are double-bagged in red gallon plastic bags for disposal. The clinic also has three diagnostic x-ray machines, which contain a small amount of low-level radioactive material. No further investigation is recommended at this facility because historical evidence and records suggest that no medical or radiological contamination has been released from this facility.

The facility Building used several hazardous paints, photographic chemicals, and metal-cleaning liquids during the operational period. After use, the paints and cleaners were drained from the appropriate bins into a drainage network that leads to a concrete-lined impoundment located adjacent to Building i. Currently, the painting and photographic operations have been discontinued and the metal etching operations are used infrequently.

All activities using hazardous materials are being moved to Building The Pretreatment Tank was installed in and is approximately 6 feet long, 4 feet wide, and 5 feet deep, with concrete sides and bottom. The tank contains a layer of rock and a layer of sand to filter the wastewaters before discharge to the sanitary sewer. Overflow from the sand filter enters the sanitary sewer directly. All floor drains discharge spills and floor washwaters to the Pretreatment Tank from to Before , all floor drains discharged directly to the western South Run tributary through outfall The sand sludge in the Pretreatment Tank is removed annually and disposed of as hazardous waste by the Defense Reutilization Management Office DRMO because of its high concentrations of chromium, silver, and lead.

Chemicals stored in the building include chemical agent resistant coating CARC paint, thiimers, iridite used in acid etching and metal cleaning , deoxidizer, almninum etch 2, cleaning solvents, waste solvent, and residue from sandblasting. Spills of these chemicals enter the Pretreatment Tank through the floor drains.

Army housing at Vint Hill Farms Station.

In the future, most of these chemicals will be moved to Building Used solvents and other hazardous wastes are stored in gallon drums outside the building in a hazardous materials satellite accumulation area. The holding area is a concrete containment building with berms to prevent spills and leaks from reaching the surrounding soils. Unused hazardous materials are stored in a fireproof building Building outside of the Electrical Equipment Facility. The building is used to store assorted paints, thinner, ammonia, ferric chloride, methyl ethyl ketone MEK , toluene, aliuninum etching powder, hydraulic fluid, and cylinders of argon and oxygen.

Small amounts of cadmium, mercury, and cyanide were detected in the surface water and moderate amounts of chromium, mercury, and silver were detected in the sediments see Appendix D. Because of the types of chemicals used in the building, the drain lines beneath the facility and the Pretreatment Tank may have corroded.

Two recently drilled monitoring wells are located near the pretreatment tank. Although sampled, the results are unknown at this time. These analyses detected benzene, chloroform, MEK, barium, cadmium, lead, and chromium at leachable concentrations. Although detected, all concentrations were below levels that would classify the wastewater as hazardous. A site investigation of the Pretreatment Tank is recommended to determine if wastewaters are leaking to the surrounding soils and perched water table.

The Neutralization Pit measures 4 feet on each side and is 5 feet deep with 6-inch thick concrete sides and an unlined earthen bottom. During its operational period, the pit contained a layer of sand over a layer of limestone. In the event of an emergency, an overflow pipe in the pit allowed the acidic, silver-bearing photographic wastewater to flow directly to the sanitary sewer.

During excavation for limestone replacement in , it was discovered that the bottom of the Neutralization Pit was not concrete. All photographic chemical wastes are currently containerized and taken to the Hazardous Waste Storage Building. A site characterization is currently in progress to determine the extent of soil and groundwater contamination from the Neutralization Pit.

The sewer line from the Neutralization Pit to the Pretreatment Tank also is suspected to be leaking. The site characterization will be completed by mid Four soil borings, one groundwater well, and one sample from the Neutralization Pit were collected in April Concentrations of metals and VOCs above background levels were detected in the soils and perched groimdwater.

Arsenic was detected above soil action levels, while cyanide, mercury, nitrate, methylene chloride, trichloroethene, and tetrachloro- ethene were above maximum contaminant levels MCLs in the perched groundwater see Appendix D. The two maintenance areas have been used since and are separated by a fence.

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The buildings both have wash racks and grease racks for vehicle maintenance activities. Drains from the wash racks lead to grit chambers, which discharge to the western South Run tributary, while drains from the grease racks discharge directly to the sanitary sewer. The Vehicle Maintenance Area has a designated area for hazardous waste and materials storage. The area is fenced and contains a roofed by foot bermed concrete pad. Four polyethylene ASTs, installed in , are on the pad for waste oil gallon capacity , transmission fluid gallon capacity , dry cleaning solvent gallon capacity , and used antifreeze gallon capacity.

Used oil filters and used batteries also are stored on the pad.