Area B (Study Areas 6,7,10, and 21)
Soil COCs include explosives, lead, and other metals
Incineration/ stabilization of metals and explosives, soils, and sediments; deactivation and grouting of concrete-encased VCP, excavation, and on-site incineration; on-site disposal of VCPPresent Worth - not available in ROD
1st
GW contaminated with arsenic, benzene, chlorobenzene
No further action for the shallow Alluvial aquifer (subsequent RODs to follow for other operable units)
3rd
Soil, sludge, and debris contaminated with VOCs (benzene, toluene, xylenes), pesticides, and metals (arsenic, chromium, lead), and cyanides
Excavation and treatment of soils and sludge via innovative thermal technology; fixation/stabilization of iron slurry waste in-situ; GW monitoring; institutional controls, and removal of demolition debris
1st
Soil contaminated with lead, antimony, arsenic, cadmium, chromium, copper, and nickel
Excavation and on-site solidification of soils
OU 2 and Amendmentto OU1
Soil and GW at ILCO Main facility COCs include VOCs and heavy metals
Acid LeachingCapital Costs - $34,764,000O&M - $0Present Worth - $34,764,000GW Precipitation/FlocculationCapital Costs - $688,000O&M - $6,739,000Present Worth - $7,427,000
1st of 2
GW COCs include VOCs and heavy metals
Containment via improved cap w/additional GW monitoring at Old Plant Landfill; containment via extension of cap w/ monitoring and maintenance at area west of former CPC plant; sanitary landfills, lime ponds, strong brine pond, mercury cell plant, and well sand residue area containment; GW extraction and treatmentPresent Worth - $10,339,000
1st
GW contaminated with benzene
Recovery of contaminated groundwater by a recovery well field; treatment and reinjection of groundwater; periodic monitoring
Final
Sludge, soil, and GW contaminated with VOCs, pesticides and herbicides, and PAHs
Excavation of soils, sludges, and related materials; possible pre-treatment of soils to meet ARARs prior to disposal; GW extraction and treatment via biotreatment and sand/activated carbon filtration followed by discharge to POTWPresent Worth - $7,002,562
1st
GW contaminated with carbon tetrachloride, carbon disulfide, thiocyanates, butylate, cycloate, EPTC, molinate, pebulate and vernolate
Modify existing GW intercept and treatment system; install additional monitoring and extraction wells; continue extracting GW from the surficial aquifer via existing and additional intercept wells; monitor GW movement at the site to determine the adequacy of the remedial action; conduct treatability studies as appropriate for source treatment of RCRA Solid Waste Management Units and CERCLA disposal sites; decommission wells no longer needed for monitoring
1st
GW COCs include VOCs, SVOCs, and pesticides
GW extraction and treatment; discharge to local POTWPresent Worth - $6,100,000
1st
Soils contaminated with VOCs, Semi-VOCs, heavy metals, and pesticides
Excavation and solidification/stabilization of ~32,500 cys of contaminated soil and sludge; construction of cap over stabilized material; institutional controls
Soil and GW COCs include heavy metals and VOCs
SVE of organic compounds; construction of cap over soil with cadmium concentrations in excess of 73 ppm and PCE concentrations in excess of .060 ppm; institutional controls; GW extraction and treatment via air stripping; discharge to POTW; air emissions modeling; monitoringCapital Costs - $445,500O&M - $92,600/yr.Present Worth - $ 1,868,900
1st
Groundwater on-site contaminated with ethylbenzene, xylene, benzene and napthalene; soil contaminated with organics (ethylbenzene mostly)
Capping of the small unlined pond; long-term monitoring of both ground and surface water
2nd
GW COCs includeDNAPL, SVOCs and VOCs
DNAPL extraction and recycling; GW in-situ/ ex-situ bioremediationCapital Costs - $4,498,000O&M - $789,000/yr. (yrs. 1-5) and $660,000/yr. (yrs. 6-10)Present Worth - $10,344,000
All 3 OUs
Soil and GW COCs include VOCs and heavy metals
No Action with Monitoring
Final
Soil and GW contaminated with VOCs, SVOCs, PCBs, and metals
Soil excavation; off-site treatment via cement kiln; shallow GW chemical precipitation; deep GW chemical oxidationPresent Worth - $25,580,000
GW COCs includeVOCs
Natural attenuation of GW; monitoring; institutional controlsPresent Worth - $92,400
Final
Soil and GW contaminated with VOCs, SVOCs, metals, and pesticides
No Action; monitoring
1st
Sludge and soils contaminated with pentachlorophenol (PCP) and creosote
Removal of selected contaminated materials to an EPA-approved hazardous waste facility; onsite biodegradation of remaining, less severely contaminated soils in a treatment area constructed with a liner and internal drainage and spray irrigation system; after bioremediation the treatment area will be covered with clean fill and revegetated; semi-annual groundwater monitoring for five years
1st
Soils contaminated with VOCs
Excavation of soils; treatment via soil washing
1st
GW
No action with monitoring
2
Soil contaminated with heavy metals
No Further Action
1st
GW contaminated with acetone, benzene, 1,1-dichloroethane, MEK, MIBK and TCE
Extraction and treatment of contaminated GW
PCP contaminated GW and soil (Amended ROD)
Excavation and soil washing of PCP contaminated soils in excess of 25 mg/kg; soil wash water treatment via bioremediation; chemical precipitation of GW to remove metals
2
GW contaminated with vinyl chloride and antimony
Natual attenuation of GW; monitoring; public water supply connections for affected residentsNet Present Worth - $0Net O&M - $0$1,400,000 for FDEP permit
1st
Soil contaminated with PCBs and lead
Excavation and off-site disposal of ~600 cys of PCB-contaminated soils (in excess of 50 ppm); excavation and on-site solidification of ~37,000 cys of soil, dust, and ash with lead levels in excess of 600 ppm and PCB levels between 25 and 50 ppm; monitoring
1st
Soil and GW contaminated with VOCs and metals
Stabilization of soils with onsite disposal/capping; offsite disposal of sludges and soils; GW extraction and treatment
2nd and final
Soils, sediment, and SW COCs include VOCs and heavy metals
Shut down recovery wells S-TS4 and SC-TS6 in the 20-foot zone; continue operation of other recovery wells and remediation systemPresent Worth - $1,118,000
2nd
GW contaminated primarily with vinyl chloride, benzene, and other VOCs
GW extraction and treatment via air stripping
3rd
PCBs not present at OU3; however, elevated levels of arsenic detected. Arsenic conta mination will be addressed in OU7
No Action
1st
Soil and GW contaminated with lead, cadmium and arsenic
Excavation of contaminated soil and battery fragments; treatment of contaminated soils and battery fragments by solidification/chemical fixation; disposal on-site
GW contaminated with VOCs
GW extraction and treatment via air stripping and granular activated carbon; construction of cap over YTA; construction of stormwater management system; GW monitoring
1st
GW contaminated primarily with arsenic, chromium, 4,4'-DDE, mercury, and nickel
GW extraction and treatment via air stripping
1st
Soil and GW contaminated with VOCs and metals
Landfill contaminated soil; capping; alternate water supply
1st
Possible contamination of GW with metals
No further action; monitoring of SW and GW
3rd
Soil and sediment contaminated with arsenic, lead, chlordane, ethion, PAHs, and PCBs
Excavation and treatment of soils and sediments via on-site stabilization/solidification treatment process; capping of stabilized material; demolition and off-site disposal of structures; GW monitoring; institutional controlsPresent Worth - $2,680,000O&M - $20,000/yr.
2
GW contaminated with VOCs and SVOCs
GW extraction and treatment via airstripping, carbon polishing, discharge to POTW, monitoringPresent Worth - $4,132,000
1st
GW plume contaminated with heavy metals
Decommission non-operational water and monitoring wells; redirect drainage
Soil contaminated with VOCs
Deed restrictions; fence installation; protective cover; GW monitoring
GW contaminated with VOCs, primarily TCE, vinyl chloride, cis-1,2-Dichloroethene, and 1,1-Dichloroethene
GW extraction and treatment via air stripping to meet SW discharge criteria; installation of additional extraction wells; surface discharge of treated GW; air emissions modelingCapital Cost - $857,375O&M - $155,125Present Worth - $1,955,878
1st
Soils contaminated with heavy metals, PCBs, and PAHs
Excavation and ex-situ solidification/stabilization of ~6,000 cys of soil; construction of cap over treated materialPresent Worth - $551,000
2nd
GW contaminated with metals
Institutional controlsPresent Worth - $136,000
3rd of 3
No Action; Monitoring of N. WetlandPresent Worth - $39,860
1st
Soil contaminated with antimony, cadmium, and lead; surface water contaminated with antimony and lead; GW contaminated with antimony, chromium, lead, and sodium
Contaminated soils will be treated via on-site solidification and on-site disposal; treatment of surface and GW, and disposal to POTWs
2nd
GW contaminated with VOCs (PCE, TCE)
GW extraction and treatment; monitoring ; and institutional controls
1st
Soil contaminated with heavy metals
Excavation and off-site disposal of ~2500 cys of soils; GW monitoring
2nd
GW contaminated with heavy metals
Natural attenuation of GW; GW use controls; and GW MonitoringPresent Worth - $94,700
1st
Soil and GW contaminated with pesticides and metals
Onsite thermal treatment of soils (if non-hazardous, backfill treated soil and debris onsite); GW pump and onsite treatment with discharge to SW; individual treatment units for private wells
1st
None
No further action
No significant GW contamination
No action; 1 yr. GW monitoring
No further action
1st
PCB contaminated soil
Excavation of soils with PCBs in excess of 10 ppm; stabilization/solidification
2nd
Soil contaminated with PCBs
GW monitoring; institutional controls; and contingent installation of pump and treat system
1st
Lead, arsenic, & chlordane in waste piles, soils, sediments, SW and GW
Soil cleanup levels to be determined
Soils primarily contaminated with lead
Excavation and ex-situ solidification/stabilization of soils with lead levels exceeding 500 ppm; GW monitoring; and institutional controlsPresent Worth - $3,723,180O&M - $32,000/yr.
Final
GW contaminated with manganese, toluene, trichloroethene, and 1,2-DCA
Institutional controls and monitoringNet Present Worth - $461,331Net O&M - $34,730/yr.
Soil and GW contaminated with PCBs and VOCs
Soil in excess of 10 ppm PCBs will be excavated and disposed of at an off-site TSCA Landfill; GW air strippingPresent Worth - $1,936,200
1st
Soils contaminated with pesticides and heavy metals
In-situ stabilization of subsurface soils; construction of cover over treated soils; GW monitoring; and institutional controlsPresent Worth - $9,900,000O&M - $104,000/yr. for 30 yrs.
3rd
Soil contaminated with PAHs, PCBs, chromium, and lead
construction of multi-layer cap over PSC 16; GW monitoring; future land-use restrictions
Soil and GW contaminated with VOCs and metals
Excavation and treatment of soil via on-site incineration; construction of cap over treated waste; installation of interceptor trench for GW collection and off-site treatment; and institutional controlsPresent Worth - $12,980,000O&M - $1,152,000/yr.
1st
Soil contaminated with pesticides
Cap; grade; monitoring wells and gas vents; alternate water supply; institutional controls to include deed restrictions
2nd
Sediment and SW contaminated with PCBs
Continuation of fish consumption advisory; public education program; monitoringPresent Worth - $3,208,000
1st
Western parcel soils contaminated with OC pesticides; GW contaminated with NAPL and VOCs
GW extraction and treatment via ultraviolet/oxidation with carbon adsorption if needed; extraction of free product NAPL; monitoring; and institutional controls Present Worth - $4,100,000
1st of 2
GW COCs include VOCs, SVOCs, heavy metals, and pesticides
GW treatment via iron co-precipitation and sand filtration with activated carbon adsorption as polishing steps; discharge to POTW; institutional controls; monitoringPresent Worth - $2,300,000
1st
Soil, sediments, and GW contaminated with VOCs (including benzene, toluene, EDC, PCE and TCE), organics (including PAHs and PCBs) and inorganics
Excavate contaminated soil with placement in pit area located on the adjacent B.F. Goodrich NPL site property, cover pit with a RCRA cap and construct an organic vapor recovery system to separate VOCs from soil; construction of a flood protection dike; installation of a leachate extraction system around landfill and upgrading of the existing landfill clay cap; GW pump and treatment using air stripping with discharge to the river; implementation of institutional controls including deed restrictions
1st
GW contaminated with VOCs, semi-VOCs, and inorganics; drainage ditch surface water contaminated with VOCs and metals; soil contaminated with VOCs, PAHs and zinc
Extraction/treatment of contaminated groundwater; discharge through a currently permitted KPDES outfall to the Tennessee River; deed restrictions; excavation of contaminated soils and placement in the former burn pit area; construction of an organic vapor recovery system; RCRA cap over the burn pit; construction of a flood protection dike around the landfill; installation of a leachate extraction system; upgrading of the existing landfill cap
Soil, sediment, GW, and SW contaminated with VOCs, heavy metals, pesticides, and SVOCs
Phase 1 - SW infiltration; Phase 2 - GW infiltration to the landfill; institutional controls; installation of monitoring wells; construction and maintenance of landfill cap; contingent installation of leachate collection systemPresent Worth - $1,500,000 to $7,000,000
No further action
Air, GW, leachate, SW, and sediments contaminated with VOCs and metals
Capping landfill w/composite barrier cover; leachate collection and treatment via chemical and/or physical methods; excavation of pond and stream sediment w/consolidation into landfill wastePresent Worth - $11,000,000
GW and air contaminated with ammonia, chlorides, and aluminum
Installation of 6 to 8 sump pumps; diversion, treatment, and discharge of intruding mine water plus containment of night air emission via portal doors; institutional controls; deed restrictions; monitoring; forced ventilation of mine air to two dispersion stacksPresent Worth - $8.9 to $10.3 Million
GW contaminated with TCE; soil contaminated with heavy metals
Removal and off-site disposal of contaminated soils
Soils contaminated with radionuclides, VOCs, and pesticide (dieldrin)
Demolition and on-site disposal of structures; extraction and solidification of trench leachate; install clay cap; improve drainage; installation of GW flow barrier; monitor GW via infiltration monitoring system; procurement of buffer zone adjacent to site; five year review; institutional controls
1st
GW contaminated with VOCs (TCE, Toluene, xylenes) and metals (lead)
GW extraction and treatment via air stripping; monitoring
GW contaminated with VOCs, semi-VOCs, heavy metals, and PCBs
GW chemical coagulation/precipitation; discharge to Ohio River; disposal of sludge at EPA approved disposal facilityPresent Worth - $1,700,000O&M - $570,000/yr.
1st
Soil, GW and sediments contaminated with metals, base/neutrals and PCBs
Multi-media monitoring program; revegetation of existing clay cap
1st
Surface soils contaminated with mercury and lead, and organic and inorganic contaminants; subsurface soils contaminated with organic and inorganic chemicals; surface water contaminated with organic chemicals; stream sediments contaminated with organic substances and inorganic substances; GW contaminated with organic compounds and inorganic chemicals
Fencing around contaminated areas; annual GW monitoring (up to 27 yrs); maintenance of RCRA cap and the leachate collection system (up to 30 yrs); leachate removal and disposal (up to 30 yrs)
2(formerlypermittedlandfill)
Soil, sediment, GW, and SW contaminated with VOCs, SVOCs, lead, PAHs, and metals
Outlying soil excavation; landfill capping; extinguish landfill fire via excavation; institutional controls; and monitoringPresent Worth - $38,975,000O&M - $4,378,000/yr. for 30 yrs.
1st
Soil and GW contaminated with VOCs
Extract and treat GW; restrict GW usage for domestic purposes; monitoring
1st
Soil, sediment, sludge, SW, GW contaminated with lead
Groundwater monitoring and excavation and stabilization/solidification of contaminated soils; treated soil will be backfilled into the slough/lagoon area and capped as necessary with clean fill
1st
GW contaminated with VOCs (PCE, TCE, 1,2-DCE, and vinyl chloride)
Extraction and treatment of GW via air stripping and an off-gas treatment system; monitoring; and institutional controlsPresent Worth - $2,262,900O&M - $261,900/yr. for the first 2 yrs., and $197,000/yr. for yrs. 3 through 7
2
Soils contaminated with VOCs
Soil vapor extractionNet Present Worth - $521,463Net O&M - $170,000
4th
Soil contaminated with pesticides now stored in Fairway Six Stockpile
On-site incineration of pesticide laden soil; selected remedy will not be implemented until the issuance of ROD for OU 1.
3rd
GW, sediment, and SW at the Farm Chemicals/Twin Sites Areas contaminated with pesticides and VOCs
Farm Chemicals/Twin Sites Areas - extraction; on-site treatment via coagulation/flocculation/precipitation, air stripping, GAC adsorption; on-site dischargePresent Worth - $6,330,618 to $7,187,465Fairway Six Area - extraction, on-site treatment by GAC adsorption and discharge on-sitePresent Worth - $1,847,508 to $4,662,292
1st
GW and soil contaminated with lead, chromium, and sulfate
Consolidate contaminated soil, backfill areas excavated; install fence
2nd
Amendment to OU 1; soils contaminated with VOCs and heavy metals
Extraction and treatment of GW via precipitation and air stripping; demolition of portions of the abandoned flea market and any standing buildings; temporary relocation of occupied trailer; excavation and on-site treatment of soils via solidification/stabilization
Present Worth - $40,470,077O&M - $7,659,030
1st
GW contaminated with benzene and PAHs; SW contaminated with arsenic, chromium and copper; Soil contaminated with arsenic, benzene, chromium and PAHs; sediments contaminated with PAHs, arsenic and chromium
Off-site disposal of sodium dicromate, copper sulfate, arsenic pentoxide (CCA) salt crystals, solidified creosote and asbestos-containing pipe insulation; tanks and associated piping will be emptied, flushed and cleaned, metal will then be cut and sold; those tanks and/or piping that cannot be cleaned sufficiently will be transported to a RCRA-permitted landfill; soil washing treatability study to determine which alternative will be implemented; GW extraction, treatment and discharge either to sewer or surface stream
Soil and sediment contaminated with PCBs and VOCs
Excavation of soil and sediment separating organic contaminants via solvent extraction; off-site treatment of waste stream; building demolition with off-site disposal; GW extraction and treatment
1st
Groundwater contaminated with organic compounds
Installation of extraction wells; pumping of contaminated water from interior wells to a common holding tank, then to an air stripping tower; water from tower transported to a biological treatment system. Water requiring additional treatment will be pumped to a carbon adsorption filtration unit
1st
Groundwater, soil, surface water and sediment contaminated with organics and inorganics
Installation of a groundwater interception and extraction system; water discharged from system will meet ARARs. Monitoring program for surface water/sediment and groundwater. Depending on the contamination of soils in a specific area, the following measures will be taken: cap, multi-layer cap with a synthetic liner, vegetative covers, gas collection/ventilation systems and soil fixation/stabilization/solidification processes
1st
GW contaminated with benzylic acid and benzophenone
(Amendment to ROD) Installation of a GW interception and extraction system; treatment will include air stripping and filtration; point of discharge and degree of treatment will be determined in the remedial design state, however discharge will all ARARs; monitoring program for surface water and sediments; review of the existing GW monitoring system and installation of additional wells if necessary
2nd
Soil and debris contaminated with pesticides
Incineration of (previously excavated and stored) contaminated soil and debris; confirmatory analysis of incinerator ash and on-site disposal of incinerator ash
2nd
Soil contaminated with arsenic, benzo(a)pyrene, dibenzo(a,h)anthracene, benzo(b,k)fluoranthene, pentachlorophenol, and dioxin
Demolition of buildings; soil excavation and on-site treatment using thermal desorption and base catalyzed decompositionPresent Worth - $4,840,000
GW contaminated with VOCs (TCE)
Extraction and on-site treatment of GW via carbon adsorption; monitoring; demolition and off-site disposal of former warehouse foundation; excavation and off-site disposal of soils
GW contaminated with VOCs
GW treatment via aeration and carbon filtration
Soil and GW contaminated with VOCs
Excavation and on-site treatment of soils via reduction-oxidation and stabilization; GW extraction and treatment via alkaline chlorination, precipitation/filtration, air stripping, and carbon adsorption
Soil and GW contaminated with Pentachlorophenol and PCDD/PCDF
Excavation and off-site incineration of lagoon soils; GW extraction and treatment via carbon adsorptionPresent Worth - $11,500,000
Soil and GW contaminated with VOCs, PAHs, and SVOCs
Extract and treat GW via air stripping; off-site discharge of treated GW to Solomons Creek or to an infiltration gallery; soil vapor extraction and bioremediation
1st
GW, SW and sediments contaminated with VOCs (including benzene, TCE, toluene and xylenes) and metals (including chromium)
Installation of a GW interception and extraction system downgradient of the source areas with pretreatment including air stripping, filtration through an activated carbon filter, metal removal, or treatment through existing lagoon system which includes presettling and surface aeration; SW and sediment monitoring. If the POTW declines to accept the treated GW, it will be discharged to a local stream under a NPDES permit
2nd
Soil contaminated with VOCs
Monitoring of GW capture zone
4th
Soil contaminated with VOCs
This OU is a contingency remedy initially relying on natural degadation processes to reduce soil contaminantsPresent Worth - $246,000 for selected alternative and $5,281,000 for contingency
1st
Soil and GW contaminated with VOCs (benzene) and metals (chromium, lead)
No further action for soils; GW monitoring
Soil and GW contaminated with VOCs and heavy metals
Residential relocation; excavation and on-site treatment of soils via ex-situ thermal desorption; on-site solidification of soils containing high levels of chromium, lead, and zinc; GW extraction and treatment via chemical treatment and air stripping; monitoring
1st
Soil, SW and GW contaminated with organics, base/neutrals and VOCs
Limited onsite incineration of contaminated soil; GW pump and treatment with offsite discharge to SW
GW contaminated with VOCs (benzene, TCE) and metals (arsenic, chromium, and lead)
GW extraction and treatment via oil/water separator, precipitation, chemical reduction, sedimentation, and air stripping
3(Site 48)
GW and soil contaminated with mercury and VOCs
No Action
1st
Soil contaminated with lead, chromium and barium; GW contaminated with VOCs and metals; sediments contaminated with arsenic
Installation of a GW interception and extraction system; range of treatment includes: air stripping, biodegradation and filtration; review the existing GW monitoring system; if necessary, install additional monitoring wells; plugging of adjacent contaminated private, potable wells; installation of confirmatory soil borings to verify the presence or absence of contamination; inactive incinerators will be inspected and any remaining residue will be sampled and analyzed
Soils and GW contaminated with VOCs
Excavation and off-site disposal of contaminated soils to comply with LDRs; GW extraction and treatment via aeration, chemical precipitation and filtration; quarterly sampling; and monitoringPresent Worth - $3,045,000O&M - $1,494,200
1st
Soil and GW contaminated with organics, metals and PCBs
Onsite thermal treatment of soil; solidification/stabilization; GW pump and treatment with discharge to SW
Amendment
Soil and GW contaminated with organics, metals, and PCBs
In-situ stabilization/solidification; GW extraction and treatmentPresent Worth - $3,200,000
Soil and GW contaminated with VOCs
Excavate and treat soil and sludge via solidification/fixation; establish ACLs for GW contaminants; discharge lagoon surface water to POTW; institutional controls
Soil, GW, and SW contaminated with VOCs, SVOCs, and pesticides
Building demolition, on-site hydrolytic/photolytic dechlorination of soils and biological treatment; GW pump and treatPresent Worth - $3,900,000
1st
Soils and sediments contaminated with metals
Solidification/stabilization of soil; backfilling of treated soil and cover
2nd
GW contaminated with low levels of chromium, cyanide and zinc; however, these compounds were not found at levels above background in soils at the site and therefore are deemed not to be from operations at the site and will be selected as indicator chemicals only
No action
GW, soils, and sediments contaminated with VOCs and heavy metals
Soil and sediment treatment via enhanced volatilization and stabilization/solidification; GW air strippingPresent Worth - $3,502,167O&M - $1,896,527
Interim Action
GW contaminated with NAPL
Installation of interceptor trench and sump; treatment of collected NAPL; reconstruction of Milford Street Drainage Ditch and Hagood Avenue Drainage DitchPresent Worth - $3,060,000
1st
Soil and GW contaminated with metals
Onsite soil flushing; GW pump and treatment with discharge to offsite SW; alternate water supply
Surface Soil
Surface Soil contaminated with lead
Excavation of soils in excess of 5 ppm Pb and off-site treatment; backfill; monitorPresent Worth - $237,000 to $936,000
GW, soil and sludge contaminated with VOCs
On-site biological treatment of sludge and subsurface soil; GW air strippingPresent Worth - $5,498,000O&M - $281,000
GW contaminated with VOCs
In-situ air spargingPresent Worth - $2,681,000O&M - $156,500/yr.
1st
Soil, sludge, and SW contaminated with VOCs (PCE, TCE), metals (lead), acids, and radioactive materials (uranium)
SW extraction and treatment; excavation, dewatering, and stabilization of sludge; construction of cap over excavated soils
2nd
Soil, sediment, and debris contaminated with VOCs (TCE), metals (chromium and lead), and acids
Excavation and compacting the process sewer line, soil, and sediment into basin; construction of low permeability cap over basin; monitoring; and institutional controls
3rd
GW contaminated with VOCs (PCE, TCE)
Installation of 11 or more GW recovery wells; extraction and treatment of GW via air stripping
6 (F-Area)
Soils contaminated with radionuclides, heavy metals, and VOCs
Solidification/stabilization of waste; consolidation; capping; institutional controls; and monitoring
7(H-Area)
Soils contaminated with radionuclides, heavy metals, and VOCs
Waste solidification / stabilization; consolidation; and capping
1st
GW contaminated with VOCs and heavy metals; soils contaminated with heavy metals, PCBs, VOCs, and pesticides
Extraction and on-site air stripping treatment of GW; vacuum treatment of soil through construction of pump and manifold system
Interim action
GW contaminated w/chromium, although nitrate and several VOCs detected
Interim action pump-and-treat system1st year cost and construction - $1,924,550
1st
GW contaminated with VOCs and semi-VOCs; soil contaminated with VOCs, semi-VOCs and organics
Extraction/on-site treatment of contaminated groundwater; discharge of treated groundwater to an off-site stream; on-site treatment of contaminated soils to remove organics
1st
Soils and tank wastes contaminated with creosote; PAHs, and phenolic compounds
Deed restrictions limiting further use of the site; construction of flood protection dike around the site and site stabilization; removal and disposal of tanked liquids and sludges; removal and disposal of site structures; installation of a security fence
1st
Soil contaminated with polynuclear aromatic hydrocarbons (PAHs), pesticides and PCBs; GW contaminated with organics and inorganics (including chromium, Bis(2-ethylhexyl)phthalate); subsurface soil contaminated with lead and organics (mostly PAHs)
Excavation of contaminated surface soil and debris; screening of debris from the soil; treatment of contaminated soil by solidification/fixation; restoration of the ground surface to its original condition; GW and land use restrictions; quarterly GW monitoring for four years; Public Health Assessment conducted five years following remedial action
Soil and GW contaminated with VOCs and heavy metals
Old lagoon soils and shallow GW remediated via soil vapor extraction; extraction and treatment of GW via air stripping; monitoring; and institutional controls
Soil contaminated with heavy metals
Install fence; removal of pond debris and surface debris; regrade landfill cap
Soil and GW contaminated with PCBs, TCE and 1,2-DCE
GW extraction and treatment; additional investigation; deed restrictions
1st
GW contaminated with VOCs, HMX, RDX, 2,4,6-TNT, 2,4-DNT, 2,6-DNT, 1,3-DNB, 1,3,5-trinitrobenzene, and nitrobenzene
Extraction and treatment of GW via electrochemical precipitation followed by onsite filtration, and UV oxidation; monitoring; institutional controls
2(O-Line PondsArea)
Soils contaminated with explosives (RDX, 2,4,6-TNT, and 1,3,5-TNB)
Extension of existing multi-media cap to cover contaminated soilPresent Worth - $1,833,000O&M - $19,000/yr.
Soil contaminated primarily with arsenic, barium, nickel, lead, copper, zinc, and vanadium
Installation of soil cover over landfill; monitoring
K-1070
SW31 contaminated with VOCs, semi-VOCs, and metals
Treat SW31 discharge via air stripping and carbon polishing
Spills at the plant have released inorganic and organic contaminants
No Further Action
8(Waste Area Grouping 11)
Surface debris contaminated with radionuclides
Clear surface vegetation; collect debris; transport off-site for disposal in WAG 6 waste consolidation areaPresent Worth - $493,000
16(K-1407-B/C Ponds K-25 site)
Pond soils contaminated with radionuclides and VOCs
Placement of clean soil and rock fill for isolation and shielding; institutional controls; GW monitoringPresent Worth - $4,476,000
17(Waste AreaGrouping 13,Cesium Plots)
Soil contaminated with cesium
Excavation of cesium-cont. soils to << 120 pCi/g; off-site storage in WAG 6 low-level radioactive waste silosPresent Worth - $709,000
Site contaminated with black-coal tar sludge and asbestos
Excavate sludge; send sludge off-site for treatment and disposal; asbestos roofing material removed and sent to asbestos landfill; investigation; monitoring; deed restrictions
Amendment
Phenols and compounds related to naphthalene identified
Modifies original remedy ; addresses remediation of Storage Basin wastesPresent Worth - $800,000 - $1,200,000
To obtain copies of selected Records of Decision, please fill out the INSS request form or e-mail your request to inss@envinfo.com. The Network also can be reached via telephone at (202) 467-7777 or FAX at (202) 467-7176.