2nd
GW contaminated with high concentrations of iron
Construction and operation of a water treatment facility
GW COCs include VOCs and manganese
GW extraction, on-site treatment, and discharge to SW; alternate water supply; monitoringCapital Cost - $181,000 - $185,000O&M - $148,000 - $189,000Present Worth - $687,000 - $688,000
Site contaminated primarily with benzene, cadmium, chloroform, manganese, phenol, cresol, ethylbenzene, and styrene
Install fence; placement of cover material on landfill; backfill to grade and seed landfill #2; leachate collection wells sealed with grout; monitoring
1st
Waste, soil and groundwater contaminated with organics and metals
Onsite incineration of contaminated wastes and soil; capping of south area to alleviate direct contact and potential leachate generation; debris removal; recovery and treatment of contaminated groundwater
Amendment
Soil contaminated with VOCs and PCBs
Excavation of DDA drums and soils according to matrix TBD; SVE/Biotreatment of soils remaining in DDA; cappingPresent Worth - $33,540,100
Fire training area 3 OU Soil contaminated with benzene, toluene, xylenes, ethylbenzene, and lead
Excavation and off-site disposal
GW at sites WP 14 (D-4) and LF18 (D-10) contaminated primarily with benzene, 1,2-DCE, PCE, and TCE
Recovery of floating waste via pumping and/or bailing; and monitoring
Soils, sediments, SW, and GW contaminated with lead, VOCs, semi-VOCs, and inorganics
Excavation of Ballpark soils above 500 ppm lead followed by disposal in the North Landfill; capping of North Landfill; wetlands restoration; excavation and consolidation of E. Basin Rd. or S. James St. soils onto the South Landfill; in-situ stabilization of soils and capping of South Landfill; South wetlands restoration; vertical barrier wall along the Christina River at the Ciba-Geigy plant; GW extraction and treatment up-gradient of the barrier wall; Christina River dredging; provide public water supply along Old Airport Road; monitoring Present Worth - $47,700,000
1st
Soil contaminated primarily with arsenic, lead and zinc
Excavate and stabilize soil; backfill stabilized soil; install asphalt cap over stabilized soil; monitoring
GW
GW contaminated with VOCs
Extract and treat GW via air stripping and carbon adsorption; discharge to surface water and/or on-site GW infiltration galleries; monitoring
1st
Groundwater contains iron and manganese at levels higher than MCLs under the SDWA; surface water contains lead at a higher level than the AWQC for lead (however background samples also exceeded the lead AWQC)
No further action; periodic monitoring of site conditions
Final
GW contaminated with tris in the Columbia aquifer
Monitoring the Columbia aquifer; monitoring Potomac aquifer; further testing; monitoring wetlands adjacent to the site
Coal tar contamination
Emergency removal was sufficient; no further action
COCs include VOCs
Ex-situ/ In-situ bioremediation of soils/sediments; containment of GW via trench or slurry wall; repairing of pump and treat system; DNAPL recovery and temporary on-site storagePresent Worth - $6,600,000 - $12,200,000
No Action
1st
Groundwater contaminated with organics and metals
Removal and offsite disposal of drums containing hazardous wastes; replacement of two domestic wells adjacent to the site; grading, covering with soil and revegetation of areas onsite where direct contact risks have been identified; restrictions on all water well installations at the site and on all shallow aquifer water wells in adjacent areas identified as potential risks; restrictions on commercial and residential building development at the site; installation of groundwater monitoring wells
2nd
Surface water and sediments contaminated by inorganics
Draining and covering pond with soil; testing and discharge of pond water to river; slope and vegetative stabilization of the pond fill surface; development of a new pond and associated habitat; install a groundwater monitoring well upgradient of the new pond; development of administrative restriction at and adjacent to the newly created pond and at the area of the filled pond
1st
Soil and GW contaminated with VOCs, PAHs, PCBs and metals
Removal of highly contaminated materials; onsite capping; subsurface containment; institutional controls
2nd
Soil contaminated with VOCs
GW monitoring
1st
Soil and GW contaminated with VOCs
Install multilayered cap; install surface water controls; and install methane gas venting system
1st
Soil contaminated with arsenic
Excavation, stabilization and off-site disposal of soils with arsenic levels above 1,000 mg/kg arsenic; capping of soils with arsenic at levels>>10 mg/kg<<1000mg/kg
1st
GW contaminated with thiodiglycol, heavy metals, chlorinated aliphatic hydrocarbons, and nitroaromatic compounds
Installation of wells; GW extraction; GW treatment using chemical precipitation for inorganics followed by ultraviolet-oxidation for organics
1st
SW contaminated with VOCs, PAHs and other base neutral extractables; shallow groundwater contaminated with VOCs and semi-VOCs; soil and subsurface soil contaminated with VOCs, PAHs and dibenzofuran; tank wastes contaminated with VOCs and PAHs
Onsite thermal treatment of excavated soils, sediments and other materials at the site which exhibit concentrations of contaminants above the risk-based levels; covering of soils remaining in the ground with clean fill and backfilled with non-hazardous ash from the incineration process; groundwater and surface water would be treated and discharged onsite
2nd of 4O-Field
Chemical warfare materials
Construction of permeable infiltration unit over site; air monitoring; construction of sprinkler systemPresent Worth - $15,175,000
Sediments possibly contaminated with phosphorus
No action white phosphorus contamination never found using current available technology
Soil, GW, and disposed wastes contaminated with VOCs and metals
Institutional controls; capping; GW extraction and treatmentPresent Worth - $23,826,000
1st
Soil contaminated with metals including chromium
Excavation and offsite stabilization of contaminated soil, followed by offsite disposal in a landfill; replacement of the excavated soil with clean fill
2
GW contaminated with chromium
Institutional controls prohibiting excavation or well drilling into or through the shallow water-bearing zone beneath 6-acre parcel; monitoringNet Present Worth - $119,793Net O&M - $32,498 yrs. 1-2 $56,335 yrs. 3-30
1st
Sediments, SW and debris contaminated with asbestos
Installation of a geotextile and soil cover over exposed areas of waste pikes; erosion control/repair; vegetative/soil cover over both waste piles; runoff collection/treatment; pump/filter lagoon and basins water, followed by onsite discharge, backfilling lagoon and basins, and onsite disposal of collected sediments and asbestos onto the waste piles; slope stability control measures, if necessary after testing; further alternative evaluations and access restrictions
2nd
Waste materials contaminated with asbestos
Pile plateau will be regraded to promote proper drainage of stormwater; soil cover with a geotextile reinforcement where necessary will be installed on portions of the plateau and side slope areas; additional borings will be collected to determine cover thickness and define soil characteristics; verification study to determine source of inorganics in creek; erosion on waste pile slopes will be repaired with a geotextile liner and additional soil cover; erosion control devices will be installed; erosion/sedimentation controls will be implemented during remedial activities to facilitate the establishment of vegetation; installation/upgrade of fencing and posting of warning signs; air monitoring; and post-closure inspections, monitoring and maintenance of the pile and preparation of a contingency plan
21 properties contaminated with radioactive hazardous substances
Removal of contaminated components where practicable, or the complete dismantling of residential structures; temporary relocation of property residents during removal; removal and off-site disposal at permitted location of radiation-contaminated soils; backfilling and revegetation of remediated properties; institutional controls
1st
On-site GW contaminated with TCE, DCE, and vinyl chloride
Installation of GW recovery wells to control off-site migration
1st
GW and soil contaminated with VOCs
Abandon existing private wells and implementation of institutional controls on the use of operable private wells and construction of new wells; GW and surface water monitoring to measure contaminant migrations; GW treatment and discharge to the adjacent stream or POTW; perform necessary additional studies to evaluate configuration of additional GW extraction wells required
COCs include VOCs, SVOCs, metals
Capping; reconstruction of existing leachate collection system; institutional controls; monitoring; landfill gas venting systemPresent Worth - $3,130,000
1st
Soil and GW contaminated with VOCs including TCE
Soil vacuum extraction and soil aeration; GW pump and treatment onsite with offsite GW treated at each residential wellhead
ESD
Switch from vacuum extraction to mechanical screeing, based on changed site condition discovered during RD
Estimated Savings = $300,000
1st
Sediments, SW and GW contaminated with VOCs (including PCE, 1,1-DCE and 1,1,1-TCA)
Excavation of contaminated sediments with offsite incineration and disposal; GW pump and treatment using air stripping and vapor phase carbon adsorption, followed by reinjection to the aquifer; provision of an alternate water supply system; GW and SW monitoring; deed restrictions
1st
GW contaminated with benzene, benzo(a)anthracene, chrysene, benzo(b)fluoranthene, benzo(a)pyrene, indeno(1,2,3-cd)pyrene, dibenz(a,h)anthracene, arsenic
Pump and treat GW to separate coal tar; off-site disposal of coal tar; install fencing; monitoring
1st
Site contaminated with lead
Permanent relocation of all on-site residences; decontamination of personal belongings; fence construction; deed restrictions
2nd
Soil contaminated primarily with lead; GW contaminated with VOCs
Excavation and treatment offsite via fuming/gasification of contaminated materials above 1000 mg/kg lead (treated waste must meet LDR of 5ppm for leachable lead before disposal); GW extraction and treatment (GW must meet background quality according to PA ARARs)
1st
GW contaminated with VOCs, primarily TCE
Construction of new water service lines, mains, valves, and access roads
2nd
GW contaminated with VOCs, primarily TCE; DNAPLs suspected
Construct GW extraction wells downgradient from suspected DNAPL area and along perimeter of GW contamination area; extract and treat GW removing contaminants to NPDES-allowed levels; discharge treated water to surface streams
Ash, soil, sediment, buildings and structures contaminated primarily with lead and other heavy metals
Decontamination and/or demolition of contaminated buildings and structures; excavation of ~31,000 cys of soil and sediment with lead levels above 500 ppm and all ash; stabilization and off-site disposal of contaminated soil, ash, and sediment.
1
Soil and GW contaminated with VOCs, mirex, and kepone
GW extraction and treatment; excavation and off-site disposal of soils; institutional controls; and monitoringPresent Worth - $15,863,000
GW contaminated primarily with bromodichloromethane, chloroform, 1,2 Dichlorobenzene, 1,4 dichlorobenzene, 1,1 dichloroethane, 1,1 dichloroethene, 1,2 dichloroethene, tetrachloroethene, 1,1,1trichloroethane, trichloroethene, and vinyl chloride
Construction of public water supply to residences south of facility; GW extraction and treatment via air stripping and vapor phase carbon extraction to meet MCLs or state background levels (the lowest level will be used as a goal).
1st
GW contaminated with cadmium, chromium, copper, lead, zinc, resorcinol, trihydroxydiphenyl, meta-phenosulfonic acid, para-phenolsulfonic acid, benzene sulfonic acid, benzene meta disulfonic acid, benzene and phenol; soil contaminated with cadmium
Construction of a landfill for disposition of the source material from the two disposal pits and the surrounding contaminated soil; source material will be stabilized/solidified prior to its placement in the landfill; GW collection and transport weekly to an off-site wastewater treatment plant; pits will be refilled with uncontaminated soil, and the area will be covered with enough soil to support vegetation; GW verification study; institutional controls; wetlands delineation to determine proposed location for the landfill, potential impacts to the wetlands will be considered and minimized; and treatability study on the solidification procedure
1st
GW contaminated with trichloroethene (TCE)
Construction of new water service lines, mains, hydrants, and valves and connection to another water and sewage department line; groundwater sampling to monitor possible advancement of contaminants
1st
Soil and GW contaminated with trichloroethane and other VOCs
Drinking Water Operable Unit: Continued operation and maintenance of dual activated-carbon units installed at 13 homes; installation and maintenance of dual activated-carbon units at homes affected by contamination from the site that are not currently equipped with carbon units; periodic chemical sampling of 13 currently unaffected homes and businesses; installation, operation and maintenance of carbon units at residential wells which become affected by the CyroChem contamination; development and construction of a new clean water supply well and distribution system to provide clean water to affected and potentially affected homes and business, including treatment units if necessary
2nd
GW contaminated with VOCs; primarily TCE
Construction and operation of four pumping/extraction wells; treatment via airstripping; onsite discharge
3rd
Soil gas survey measured significant DCA and TCA concentrations
Further sampling; soil vapor extraction; and confirmation sampling
1st
GW contaminated with acetone, chlorobenzene, chloroform, TCE, PCE, and manganese
Pump and treat GW via air stripping; institutional controls; monitoring
1st
Soil and SW contaminated with VOCs, organics and inorganics
Offsite disposal of ponded water; regrading and installation of multi-layer cap; runon/runoff controls; runoff and GW monitoring; access and deed restrictions
2nd
GW contaminated with VOCs
Treatment units provided to residences if levels of on contaminants exceed action levels; GW monitoring
2nd
Tanks containing PCB and lead contaminated oil and sludge wastes which are contaminating surrounding soil and groundwater
Removal and offsite incineration of contaminated liquids and sludges; decontamination of tanks, piping and structures; disposal of uncontaminated materials
2nd
Remaining soil and GW contamination (VOCs, phenolic compounds, phthalate esters, PAHs, PCBs, various inorganic constituents, and lead) after the former processing facility/tank farm was removed from the site
Excavation and on-site thermal treatment of contaminated soils and sludges and oily sediments; disposal of thermally treated materials by backfilling in source area 2; covering the backfilled area with clean soil followed by revegetation; capping source areas 1,4,5, with one foot of flyash and two feet of soil followed by revegetation; capping source areas 3,6,9 with clean soil followed by revegetation; deed restrictions; establishment of ACLs for GW
3rd
Soil, sediments, GW and SW contaminated with VOCs (including benzene, toluene, TCE, and xylenes), organics (including PAHs and phenol), and metals (including arsenic, chromium and lead)
Excavation of soils, sediments and sludge followed by onsite incineration, backfilling (possibly using incinerator ash), and installation of a vegetation cover; GW pump and treatment along with SW, aqueous wastes from the leachate lagoon area, and runon, after construction of an onsite biological activated carbon treatment plant, followed by offsite discharge to a stream or POTW; GW monitoring; flood control measures
1,2
Soil contaminated primarily with dioxin, PCBs, lead, and heavy metals
Excavate and incinerate dioxin contaminated fluff in excess of 20 ug/kg, and PCB contaminated soil and fluff to 25mg/kg
3rd
Fluff (waste insulation material consisting primarily of polyvinyl chloride and polyethylene chips; fibrous material; and paper, soil, and metal)
Recycling of fluff; sampling and analyzing of underlying soils; and erosion and sedimentation controls
2nd
GW
No Action
1st
GW, SW, soil, and sediments contaminated with PCP, chlorinated dioxins and dibenzofurans, fuel oil and mineral spirits components, heavy metals, VOCs and phenols
No Action: (On-site soils); Installation and operation of an optimum, oil/water separator: (Storm drain effluent); Landfilling and off-site treatment of the aqueous waste: (Waste Materials)
1st
Soil and wastes (battery casings) contaminated with lead and acids; GW and sediments also possibly contaminated
Recycling of battery casings; excavation of lead-contaminated soil, fixation of the soil utilizing a cement- or lime-based fixation process and depositing the fixed material in a state-permitted landfill
GW
GW contaminated with TCE and DNAPLs
Install landfill cap; install surface water diversion and gas venting systems; extract and treat neargradient GW; install appropriate GW treatment facilities
GW primarily contaminated with TCE
Impermeable cover placement over lagoon; air stripping and solids removal of GW; surface water runoff controls; monitoring; and deed restrictions
1st
GW contaminated with organics, toluene, xylenes
Installation of groundwater recovery wells; air stripping of groundwater with injection of treated water; closure of injection well including excavation of contaminated pit oil sediments; deed restrictions prohibiting use of groundwater on the affected properties; installation of a treatment system for active well considered to be currently affected by the injection well; monitoring; further data collection and periodic reevaluation of clean-up goals
2nd
Surface soil, shallow cinders and sediments contaminated with toluene, 1,2-dichloroethane, PAHs, bis(2-ethylhexyl)phthalate, toluene, trichloroethene, ethylbenzene, PCE and other volatile compounds; ponded water contaminated with VOCs; stream sediments contaminated with arsenic, beryllium, cadmium, and PAHs
Run-on, run-off and erosion controls; short- and long-term leachate collection; capping over the landfill including moving the on-site water main; GW recovery and treatment; monitoring in coordination with the Injection Well Operable Unit; institutional controls; further sample collection and data evaluation leading to a determination whether to pilot test for, and possibly, commence in-situ volatilization, other treatment and/or capping; periodic reevaluation of cleanup goals; movement to the site of trash, shallow soils and shallow cinder fill from the adjacent Pennsylvania Turnpike property
1st
Soils and GW contaminated with VOCs
Grading and compacting existing ground surface; placement of two-foot thick clay cover
2nd
Soils and GW contaminated with VOCs
No Action
Soil, GW, and sediments contaminated with metals, DNAPLs, and VOCs
GW air stripping and catalytic oxidation; off-site incineration of LA soil; stabilization of other soils; off-site disposalPresent Worth - $17,590,000
2nd
GW contaminated with chloroform and 1,2-dichloroethane
Closure of unlined municipal landfill; pump and treat GW to Lehigh river; monitoring
1st
GW contaminated with VOCs and metals
GW extraction and treatment; installation of impermeable cap
1st
GW contaminated with VOCs including TCE
Interim remedy selects no further action with continued GW monitoring and treatment at residential and commercial establishments by filtration using granular activated carbon adsorption
2nd
GW and SW contaminated with VOCs
Pumping of GW and treatment of both GW and SW using airstripping
1st
GW contaminated with VOCs
GW extraction and treatment through in situ vapor stripping
2nd
Soil contaminated with VOCs
Long-term water quality monitoring; install four GW monitoring wells; analyze GW for VOCs
1st
Groundwater contaminated with VOCs
Providing a potable water supply to those served by the Harrisburg International Airport system; water will be collected and then treated via a 2-tower air stripping unit
1-4
Soil and GW contaminated with VOCs and PAHs
Continued operation of the existing drinking water supply treatment systems; installation, operation and maintenance, and continued monitoring of wells
GW and soils contaminated with VOCs
Operation and maintenance of all previous RAs; complete landfill cap; site fencing; additional monitoring and extraction wells
1st
Carbon waste pile (including lead, zinc, copper, trichloroethene, and tetrachloroethene)
Excavation of contaminated waste and underlying soils; incineration of the wastes and soils in an off-site RCRA-permitted incinerator; disposal of incinerator ash in a RCRA-permitted hazardous waste landfill
3rd
GW contaminated with VOCs, primarily PCE, TCE, 1,2-dichloroethene, vinyl chloride, and 1,1,2-trichloroethane
Public water supply to affected properties; GW extraction and treatment (to meet PA ARARs background levels) via air stripping, carbon adsorption, precipitation, sedimentation, filtration, and thermal destruction; discharge treated GW to Mauses Creek and/or Susquehanna River
OUs 1 and 2
GW and Soil COCs include VOCs
Excavation and off-site disposal; GW extraction and treatment of the upper interval of the granite knitting mills well
Soil COCs include PCE and TCE
In place processing contaminated soil with hot air injection - Present Worth $425,300
Soil, sediments, GW, and SW contaminated with VOCs and metals
Single barrier cap over entire site; passive vents; leachate collected and disposed of off-sitePresent Worth - $16,105,149
GW contaminated with VOCs, primarily TCE, trans-1,2-DCE, vinyl chloride monomer, styrene, and ethylbenzene
GW extraction and treatment via air stripping and carbon vapor adsorption; long-term monitoring; lagoon excavation followed by onsite drying of PVC material; lagoon restorationPresent Worth - $11,119,000
2nd
Surface and sub-surface soils contaminated with benzo[a]pyrene equivalents and beryllium
No action
GW contaminated primarily with TCE and DCE
Restore soil cover; GW extraction and treatment; sediment removal from concrete collection vaults; fencing; monitoring
1,3,4
Soil and GW contaminated with PCBs, PAHs, heavy metals, and TCE
Install clay cap and slurry wall; construct GW extraction wells
1st
Defoliation of mountainside from zinc, lead, cadmium and sulfur dioxide contamination
Application of fly ash and offsite sludge on target areas; application of grass seed, seedlings and mulch
2nd
Sediments, GW and SW contaminated with metals (including cadmium, lead and zinc)
Slope modification, capping and application of a vegetation cover on the residue bank; construction of SW diversion channels; SW/leachate collection and treatment using lime-activated filtration lagoons and/or constructed wetlands; implementation of an inspection, monitoring, and maintenance plan; wetlands restorative measures, if necessary
Soil contaminated primarily with PCBs
Excavation and on-site treatment via solidification/stabilization of 28,000 cy of soils; erosion and sedimentation controls; deed restrictions; decontamination of buildings and structures; excavation and treatment of residential soils to achieve an average PCB concentration of 2 ppm
1st
None
No further action
1st
Tanks, pits/sumps containing fuel oils and other contaminated oils (including pesticides and VOCs)
Transportation and off-site disposal of the known remaining on-site waste streams to permitted RCRA facilities; demolition of process lines which will remain on-site until future site remedial actions are performed; proper packaging of the insulation materials removed from the process lines and stored on-site until future site remedial actions are performed; transportation and off-site disposal of hazardous chemicals recovered from within the process lines to permitted RCRA facilities
2nd
1,200 to 1,300 cy of asbestos waste being addressed in OU
Asbestos removal and off-site disposal
2, 3
Soils contaminated with VOCs
Completion of GW RD study; GW extraction and treatment via vapor phase carbon adsorption
Soil and GW contaminated primarily with TCE and DCE
Excavation and off-site disposal of soil to meet TCE clean-up level of 320 ppb; installation of municipal water line; GW extraction and treatment via GAC adsorption; long-term GW monitoringPresent Worth - $5,278,239
1st
Soil, sediments, GW and SW contaminated with low levels of heavy metals
No action
1st
Soils contaminated with VOCs
Off-site disposal of solid waste and debris; vacuum extraction of VOC-contaminated soils; source containment via slurry wall and capping; fencing; revegetation; deed restrictions; monitoringNet Present Worth - $11,152,894
No site-related risks
No Action; no risks that warrant a remedial action
Soil and GW contaminated with VOCs
Excavation and on-site incineration of contaminated soil and sludge; pond and wetlands restoration; long-term GW monitoring; GW extraction and treatment via air sparging and vapor extraction; and monitoring
ESD
Broaden prior ESD, (signed 3/9/95; estimated savings of $7.2 million
GW COCs include VOCs
GW extraction and treatment via granular activated carbon; GW monitoring; institutional controlsPresent Worth - $622,300
1st
Leachate seep and off-site residential wells contaminated with VOCs
Collection of leachate and off-site treatment in a RCRA-authorized facility; installation of activated carbon treatment systems at residences with contaminated water above levels of concern
1st
Three residential drinking wells have shown multiple organic contaminants
Construct leachate collection and treatment system; install filtration systems on two home drinking well systems
2nd
GW and soils contaminated with VOCs
Construction of security fencing; reduce damage to cap
Soils contaminated primarily with lead
Off-site transport and treatment of ~13,000 cys of battery wastes at a secondary lead smelter; excavation of ~39,000 cys of soil with lead levels in excess of 1,000 mg/kg; consolidation of soils within on-site landfill; landfill closure; capping of landfill; GW treatment via vertical chemical barrier; monitoring, building decontamination; fencing; and institutional controls
Sub
Soil contaminated with organics
Remediation of contaminated soils by vacuum extraction
3rd
GW contaminated with VOCs
Installation of additional recovery wells; pipeline construction; investigation of hydrogeologic conditions; operation & maintenance
ROD Amendment
Select wet soil cover in place of soil vapor extraction
Estimated savings = $8 million
1(Interim)
GW contaminated with VOCs, SVOCs, and metals
GW extraction and on-site treatment via air strippingPresent Worth - $13,172,000
1st
Disposed battery casings
No action alternative with continued groundwater monitoring
1st
Surface soils and sediments contaminated with PAHs; GW contaminated with VOCs
Provide alternate water supply and construct landfill cap
1st
GW contaminated with VOCs, primarily TCE, TCA, and 1,1 DCE; DNAPLs present in fractured bedrock
Extraction and treatment of contaminated GW via air stripping followed by carbon adsorption to meet non-zero MCLGs and MCLs; discharge of treated water to northern tributary of Rock Creek
2nd
Soils contaminated with TCE and TCA
No additional action
Sub
Groundwater contaminated with organics
No action alternative with continued monitoring; alternate water supply for any affected drinking water wells
1st
Tar-like deposits including phenol compounds and polycyclic aromatic hydrocarbons
Amendment to the 1986 Record of Decision
1st
Tanks and vessels containing VOCs, liquid arsenic, and aniline
Consolidation of waste liquids into approximately three categories via either thermal treatment or biodegradation or recycling; transporting the wastes off-site for treatment and eventually disposing of the treated liquids into an off-site water body and disposing of solid residuals in an off-site landfill; tanks and vessels will be cleaned to meet RCRA closure requirements; interim tank inspections
2nd
Concrete vault, lagoons, and buildings contaminated with arsenic
Excavation and incineration of concrete vault contents; lagoon excavation and fixation; surface cleaning of contaminated site structures; coating and sealing the non combustible, permeable demolition debris
3rd
Soils, adjacent sediments, and GW contaminated with aniline, n-nitrosodiphenylamine, PCE, TCE, total-1,2-dichloroethene, benzene, pyrene
Excavation of soils/sediments; biological treatment of soils, sediments; on-site consolidation of soils and capping; GW extraction followed by treatment and discharge to reinjection wells
ESD
Switch from on-site incineration to off-site incineration
Estimated savings = $7 million
1, 2
Soil and GW contaminated with VOCs
Extension of City waterline; upgrade pump station; install monitoring wells
3rd
Soil contaminated with VOCs
Excavation and treatment of soils via thermal desorption; off-site treatment of residuals and waste waters; backfilling of treated soils; O&M; and institutional controlsPresent Worth - $7,800,000 to $9,300,000
1st
Soil and waste material within a 700-foot radius of the facility contaminated primarily with lead
Excavation and treatment via stabilization of residential surface soils exceeding 500 mg/kg; off site disposal of treated soils; and structure demolition associated with foundry
1st
GW contaminated with organics, phenols, and metals (including arsenic and lead)
GW pump and treatment and basin liquid treatment after upgrading the existing onsite activated sludge treatment plant; GW, SW, and basin fluids monitoring; deed restrictions
2nd
Soil contaminated with PCBs
Off-site disposal of drums; excavation and off-site disposal of PCB-contaminated soils; destruction of unstable acid reclaim facility; monitoring
COCs include VOCs
Capping of haz. waste disposal area and area south of barrel trench; excavation and off-site incineration of waste layer and cont. soils in eastern disposal trench; extraction and treatment via air stripping to remove VOCs; monitoringPresent Worth - $4,340,200 - $10,741,400
1st
Soil contaminated with lead
Excavation and disposal of surface and subsurface soils containing lead above 1,000 mg/kg
2nd
SW contaminated with metals (including nickel and vanadium)
Diversion of surface runoff from Area A (previously capped) into Pond A; water quality monitoring
2nd
Soils did not contain contaminants at levels of concern
No Action; previous and on-going remedial and removal actions have or will address all risks
Soil contaminated with tetrachloroethylene
Excavation and off-site disposal of soils; landfill cap; leachate collection and treatment at a POTW; GW monitoring
2nd
GW contaminated with benzene, methylene chloride, TCE, arsenic, chlorobenzene, and PAHs
Pump and treat GW via precipitation, sedimentation, filtration, and ultra violet/oxidation
1st
Creosote contaminated soils and sediments
In situ soil flushing; in situ biodegradation in the creosote layer following flushing; onsite land farming of excavated surface soils, sediments and subsurface wetland soils; creosote contaminated bottom sediment in the RCRA regulated lagoon shall be biologically degraded in a tank; erosion/sedimentation control; backfill excavated areas with treated soil and sediment; cover backfilled areas with topsoil and revegetate; groundwater monitoring during treatment and post-treatment
1
No Action
Soil and GW contaminated with metals, VOCs, DNAPLs, PAHs, PCP, and As
Cap w/slurry wall; LT thermal desorption of hot spot soils; GW dewatering systemPresent Worth - $10,907,000
ROD Amendment
Delete treatment of "hot spots"
Estimated savings = $10 million
1st
SW contaminated with organics, cadmium, iron, manganese and zinc; sediments contaminated with several semi-VOCs and zinc; GW in existing monitoring wells contaminated with benzene, iron, manganese, chromium and lead; GW in Phase II monitoring wells contaminated with toluene, ethylbenzene and xylenes, benzene, napthalene, and aluminum; soils contaminated with metals (mostly lead and zinc)
Soil erosion controls; increased freeboard on two existing onsite ponds; collection of surface water runoff plus gravity settling; collection of shallow groundwater oily seeps with oil-water separation and transport of water to POTW
2nd
On-site containment basin ( Dutchman's Pond ) contaminated primarily with zinc
Closure of Dutchman's Pond; oil/water separation and treatment via on-site oil/water separator to meet VWCB Water Quality Effluent Standards; testing of dewatered sediments and soils; excavation and off-site disposal of soils containing zinc levels greater than 50 ppm
1st
Soil, sediments, SW, air and biota contaminated with mercury
Run on controls; treatment of waste pond outfall; institutional controls
GW contaminated with PCP, arsenic, and chromium
GW treatment via dewatering process prior to soil excavation; excavation and low temperature thermal desorption treatment of soils and sediments from storm sewer; monitoring; and institutional controls
ROD Amendment
Change on-site treatment of soils and sediments to off-site incineration
No contaminants posing risks to human health and environment
No further action
9(Interim)
GW contaminated with VOCs, pesticides, herbicides, and metals
GW pump and treat; return to upper aquiferPresent Worth - $594,067
1st
Ground H2O and surface H2O contaminated with coppers
In situ dissolution and treatment; surface repair of unvegetated areas; improve surface drainage, drainage control and revegetation, above-grade dry neutralization
1st
Drums and tanks containing metallic sodium, methyl mercaptan, acids, BNAs, cyanide liquids and solids, chlorinated organic liquids, flammable liquids, flammable solids, metals, air reactives, PCBs, oxidizers, and peroxides
Removal and disposal of tanks and drums; drainage and stabilization of the onsite and facility lagoons; treatment of the drained lagoons and discharge to river; excavation, bulking and disposal of buried drums; proper stabilization and/or removal and disposal of asbestos containing insulation material found in process lines; proper removal and disposal of the cylinder(s) of hydrogen cyanide
2nd
Structures contaminated with asbestos; tank waste including inorganic acids, inorganic base/neutrals, and cyanide
Dismantling and decontamination of tanks, equipment, and buildings; off-site disposal
1st
Soil contaminated with organic and inorganic contaminants, primarily CPAHs and arsenic
Onsite incineration and containment of soil contaminated with organics; ash will be tested and disposed of accordingly with respect to its EP toxicity; placement of a multi-layer RCRA cap which will extend into the subsurface clay to prevent surface water from infiltrating into the landfill and leachate from seeping out of the landfill; placement of clean fill in the excavated areas, implementation of surface management techniques for drainage and sediment control, revegetation, ambient air monitoring and post-treatment monitoring
1st
Soil, waste materials, sediments contaminated with PAHs and metals
(Remedy supersedes earlier ROD 3/31/88). Installation of a multi-media RCRA Subtitle C cap on the landfill and regrading/revegetating; excavation of contaminated inorganic hot spots using solidification; excavation/treatment of organic contaminated soils and sediments using bioremediation in a treatment bed within the associated area of contamination; short-term environmental monitoring; GW monitoring; deed restrictions
1st
Soils contaminated with 2,4,6-TNT, 1,3,5-TNB and 2,4-DNT; hazard to individuals & wildlife as a result of direct contact; soil and sewer line contaminated with organics and asbestos
In situ flaming treatment; capping of treatment residuals; offsite disposal of asbestos; deed restrictions
2nd
Soil, sediments, and GW contaminated with nitroaromatics and lead
Remedy addresses three distinct areas of contamination: Area 1 GW pump and treatment with discharge to SW; purchase land, construct a soil cover over the contaminated area, and incorporate land into existing wildlife preserve; Area 2 Relocation of ponds 1 and 2, followed by backfilling with clean fill; GW pump and treatment with discharge to SW; Area 3 Installation of a soil cover; GW pump and treatment with discharge to SW
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.