2nd
Soil and GW contaminated with VOCs
Soil excavation in two waste areas, and treatment via low-temperature thermal stripping; permanent alternate water supply to residents with contaminated wells; pump and treat GW; and monitoring, fencing, and access restrictions
1st
On-site wastes, soil and groundwater contaminated with VOCs, semi-VOCs, Aroclor 1242 and metals
Flood control measures; deed restrictions; installation of an upgraded security fence; monitoring; RCRA cap over landfill; plume barrier groundwater extraction and treatment system
1st
GW, soil, and sediments contaminated with cyanide, heavy metals, and organics
Extend Byron municipal water supply to residents in danger of ingesting contaminated GW; removal of wastes from salvage yard; install additional monitoring wells; plug and abandon monitoring wells not selected for long term monitoring
GW contaminated with fluoranthene, pyrene, benzo (a) anthracene, chrysene, benzo (b) fluoranthene, benzo (k) fluoranthene, benzo (a) pyrene and acenaphthene
GW extraction and treatment; expansion of monitoring program for untreated GW; fencing; and land use and deed restrictions
1st and 2nd
Soil and GW contaminated with VOCs (benzene, PCE, TCE, toluene, xylene); and other organics (PCBs)
1st operable unit: Resampling of localized soil area; 2nd operable unit: 6.5 acre area covered with vegetative cover; 3.5 acre area covered with gravel; GW will be pumped and treated on-site
1st
Soil, SW, GW and air contaminated with asbestos and inorganics
Grading and covering waste materials; offsite disposal of asbestos-containing material; monitoring system
1st
Soil, GW, SW and sediments contaminated with dioxins, furans, carcinogenic PNAs, noncarcinogenic PNAs, phenols, pentachlorophenol (PCP), and naphthalene
Excavation of visibly contaminated soils plus a six inch buffer layer; backfilling of excavated areas with clean soil, regrading, revegetation and maintenance; conduct an on-site biological treatment demonstration study, and upon successful demonstration consolidate excavated soils into a full scale cell through a phased loading approach; construction and operation of a system of shallow interceptor trenches and deeper pumping wells to contain and extract contaminated GW; pretreat GW and release to POTW; GW monitoring; deed and access restrictions
2nd
Soil and groundwater contaminated with PCBs, VOCs
Excavation and onsite incineration of affected soil and sediment, flushing and cleaning of affected sewer lines, demolition and disposal of structures on the property; collection and onsite treatment of affected groundwater
1st
Soil contaminated with lead
Blood lead sampling in neighboring communities to determine excavation depth to achieve 500 ppm soil lead cleanup level; blood lead study will be conducted and distributed to nearby residents; all Taracorp pile drums will be removed and transported off-site for lead recovery; SLLR Pile wastes will be consolidated into the Taracorp pile; after transportation and consolidation of materials, the pile will be graded and capped with a RCRA-compliant, multimedia cap; a clay bottom liner shall be constructed on all areas where consolidated materials will be placed; upgradient and downgradient wells will be installed to monitor water quality
1st
Soil, SW and GW contaminated with iron, manganese and nickel
No further action (previous removal actions adequate to protect human health and the environment)
1st
Soil and sediment contaminated with metals (cadmium, chromium, and lead)
Excavation; treatment by stabilization/fixation; on-site disposal
2nd
PCB Areas OU
Excavate and treat PCB-contaminated soil via mobile incineration technology or ISV; on-site disposal meeting RCRA Subtitle D requirements; backfilling and capping of excavation areas; monitoring
Washout lagoon area soils contaminated with TNT, 2,4-DNT, 2-A-4,6-DNT, TNB, RDX, and NB
Excavate and treat soils via on-site thermal treatment by rotary kiln incineration; on-site disposal; decanting and treatment of standing water in lagoons; restore wetlands; and air monitoring
1st
GW contaminated with TCE, DCE, PCE, vinyl chloride, and lead
Extending City of Rockford water distribution system to affected residences
Soil, sediments, and GW contaminated with VOCs, SVOCs, pesticides, PCBs, and PAHs
Construction of landfill cap; excavation and consolidation of sediments under landfill cap; installation of GW and leachate collection system; monitoring; and institutional controls
1st
Soils, sediments, groundwater and surface water contaminated with chlordane and heptachlor
Excavation of contaminated soils and sediments until background concentrations of chlordane are reached; areas will be backfilled with clay and revegetated; treat excavated material by in-place chemical stabilization, and provide a RCRA-compliant multimedia cap over the regraded pond; new diversion channel to be constructed; groundwater collection drain east of the pond; dispose of extracted groundwater via on-site deep injection well; monitor groundwater and surface cover conditions; land use and deed restrictions
Soil and GW contaminated primarily with BETX, chlorinated benzenes, chlorinated ethenes, chlorinated ethanes, ketones, phthalates, PAHs, phenols, PCBs, and lead
Excavation and off-site disposal of intact buried drums; excavation, treatment, and redepositing of residuals for PCB-contaminated soils in excess of 10 ppm, and heavy metal-contaminated soils in excess of 500 ppm lead; place 10" soil cover over PCB contamination greater than 1 ppm and less than 10 ppm; installation of ISVE system to treat VOC/SVOC-contaminated soils; GW extraction and treatment via air stripping, UV/Oxidation, chemical precipitation, and carbon absorption to meet MCLs
1st
GW contaminated with VOCs
Installation of extraction wells; extend city water lines to affected residences; monitoring
2nd
GW contaminated with VOCs, DNAPLs are also present
Institutional controls; additional source investigations; monitoring; SVE of VOC contamination in TCE source area; extension of city water supply to ~500 residences; GW extraction and treatment via air stripping and carbon adsorptionNet Present Worth - $7,700,000
1st
Soil, sediments, SW and GW contaminated with VOCs and organics; soil contaminated with PCBs; GW contaminated with inorganics
Onsite disposal of soils and sediments; RCRA multilayer cap; rerouting of SW; GW collection and treatment; institutional controls to include deed and access restrictions
Soils contaminated with semivolatiles and PCBs
Installation of fencing around property; excavation and incineration of soils containing contaminants of concern; soil flushing; installation of extraction wells; monitoring
1st
GW, soil contaminated with phthalates, metals, phenolic compounds, PCBs, PAHs, VOCs, arsenic, antimony, cadmium, copper, lead and xylene
Excavate site to remove contaminated drums and incinerate contents; reconsolidate soils and waste excavated during drum removal; install/maintain a groundwater collection system; remove and treat groundwater contaminants; install/maintain a soil cover compliant with the hybrid closure requirements and with Indiana Subtitle D; monitor groundwater; fence; deed restrictions; provide and maintain flood protection; compensation for loss of wetlands due to remedy construction
Final
Soil and GW contaminated with VOCs, SVOCs, and metals
Composite barrier capping; gas collection and treatment; GW monitoring; and institutional controlsPresent Worth - $11,821,000
1st
Soil and GW contaminated with BHC
Collect on-site contaminated soils to 50 ppm BHC; dispose of soils in a capped earth mound located on a fenced site above elevation of highest groundwater level; construct French drain; groundwater monitoring; deed restrictions
Final
Soil, sediment, GW, and SW contaminated with VOCs, SVOCs, inorganics, and lead
Capping; slurry wall; extraction wells; filtration; air stripping; drum removal; and institutional controlsPresent Worth - $10,473,800O&M - $174,000
1st
Soil, SW and GW contaminated with inorganics, PAHs, VOCs and organics
Capping of site; flood control measures; additional GW studies
Amendment; modify 1989 ROD provisions relating to the extent of soil treatment as a result of new arsenic data
On-site treatment of ~5,200 cys of contaminated soil to meet action level for lead of 1000 mg/kg; GW extraction and treatment via air stripping and carbon adsorption to meet MACs and CALs for VOCs; deep-well injection of treated GW; construction of cover over entire site; site access restriction, and monitoring
1st
GW, soil contaminated with metals, VOCs, semi-VOCs, PCBs, PAHs and phthalates
On-site treatment of contaminated soil and waste material by solidification/stabilization followed by on-site deposition of the solidified material; installation and operation of a GW pumping system to intercept contaminated GW from the site and injection of GW into a deep well for disposal or installation of a treatment system and reinjection into the aquifer; installation of a ditch along the site and a final cover compliant with RCRA closure requirements; site access and deed restrictions; long-term monitoring
Amendment; modify 1989 ROD provisions relating to the extent of soil treatment as a result of new arsenic data
On-site treatment of ~18,300 cys of contaminated soil to meet action level for lead of 1000 mg/kg; GW extraction and treatment via air stripping and carbon adsorption to meet MACs and CALs for VOCs; and deep-well injection of treated GW
1st
GW, SW and air contaminated with oil containing benzene, ethylbenzene, toluene, xylene, chlorinated hydrocarbons, PAHs, PCBs, metals and cyanide
Constructing a soil-bentonite slurry wall to completely surround the oil layer; install an oil/groundwater extraction and groundwater recharge system; install a small scale on-site groundwater treatment system to allow for dewatering of the slurry wall; monitoring groundwater inside and outside the slurry wall; installation of an on-site oil storage tank
2nd
Wastes, SW, GW and sediments contaminated with VOCs, PAHs, PCBs, chlorinated hydrocarbons, dioxins, furans, pesticides and metals
Excavation of oil contaminated waste and fill; thermal treatment in a mobile on-site incinerator; removal of debris and contaminated sediments from on- and off-site surface water bodies, fill excavated area with treatment process residuals, trench spoils and pond sediments and debris, cover area contained by slurry wall with a RCRA Subtitle C cap; extraction, treatment and reinjection of contaminated GW inside the slurry wall to promote soil flushing; discharge of a small quantity of GW outside the slurry wall to compensate for infiltration; deed and access restrictions; long term GW monitoring
1st
No measurable contamination
No further action
Amendment
Access restrictions; RCRA Subtitle C cap and gas venting system; hydraulic isolation wall south and west of landfill; treatment of GW and leachate at the IN POTW; and monitoring
Current conditions do not pose an unacceptable risk
No further action
GW COCs include VOCs
GW monitoring; institutional controls; natural attenuation of shallow GWCapital Cost - $30,000O&M - $30,000/yr.Present Worth - $350,000
1st
GW contaminated with benzene, pyridine and pyridine derivatives, and ammonia
GW extraction and treatment (to meet recharge/discharge ARARs) via biological treatment, filtration through granular activated carbon, filtration through precipitation/ clarification, and/or air stripping; the optimum treatment will be determined during RD; 0.5 million gallons per day discharged to POTW, remainder reinjected to the aquifer after treatment; monitoring
2
Soil, GW, and sludge contaminated with PAHs and VOCs
Excavation of soils; thermal desorption; cap and seed; sludge in-situ solidification; and institutional controlsPresent Worth - $4,800,000
Sub
Soil, sediments and GW contaminated with TCE, PCE and inorganics
Multi-media cap; soil vapor extraction system; GW pump and treatment; institutional controls to include deed and access restrictions with compliance point at the edge of the cap
Final
PAH-contaminated soil
Soil Vapor Extraction technology; soil washing; install municipal landfill cap
1st
PCBs, dioxins and furans found in the sanitary sewer sediments
Sewer pipe cleaning via hydraulic jetting and vacuum pumping to remove contaminants; inspection of sewer pipe; incineration of contaminated sediments; filter sewer sediments and discharge clean water to POTW; remove and dispose of RI generated wastes
Final
Soil contaminated with VOCs and metals
Soil excavation; off-site disposal; backfill w/barrier walls; clean fill; deed restrictionsPresent Worth - $1,800,000O&M - $34,000/yr.
Soil and GW COCs include VOCs and heavy metals
Removal and off-site treatment and disposal of drums; capping of entire landfill; institutional controls; monitoringPresent Worth - $3,852,535
GW contaminated with inorganics and metals
No Action; monitoring
1st
Site contaminated with MBOCA
Remove and treat lagoon sludge; excavation of soils, lagoon sludge and clay; In situ vitrification of soils, lagoon sludge and clay; monitoring
Soil contaminated with MBOCA or Curene 442
Amendment low temperature thermal desorption of excavated contaminated soils; monitoring
2
GW contaminated with heavy metals and some organics
Establish ACLs; institutional controls to limit GW use; monitoring; RA Plan developmentNet Present Worth - $565,000Net O&M - $21,700
Soil contaminated with hexachlorobenzene (cbb) and VOCs
Excavation, treatment, and containment of 48,000 cys of soil and sediment; GW pump and treat
1st
Soils, sludges, and GW contaminated with VOCs including methyl chloride, benzene, DCB, aniline, azobenzene, and benzidine
Upgrade existing GW pump and treat system; excavate and treat soil via on-site thermal destruction; disposal of sludge of on-site RCRA Subtitle C landfill
GW contaminated with antimony and arsenic, 1,1-dichloroethane, vinyl chloride, and PCBs
Institutional controls; grading and leveling of site; drum removal and off-site disposal; improving site cap to meet MI cap requirements; establishment of ACLs for GW; and GW monitoring
Soil and GW contaminated with VOCs
On-site disposal of debris, waste, soils, and sediments in a Subtitle D Landfill; GW collection and treatment during excavation activities to meet MCLs; monitoring; preservation of wetlands
Soil, debris, and buildings contaminated with PCBs
Excavation and treatment of soils via low temperature thermal desorption; installation of containment cell; demolition of three buildings on-site; removal of UST; air monitoring; and fencing
COCs include PCBs and lead
Soil excavation on site and from designated neighborhood properties containing 1 ppm or more of PCBs; demolition of cont. buildings on site; disposal of soil and debris at permitted off site landfillPresent Worth - Allen Park Landfill - $5,228,400Present Worth - Model City Landfill - $7,716,200
GW and soil contaminated with VOCs
No further action
Soil contaminated with VOCs, SVOCs, PCBs, and heavy metals
Construct soil vapor extraction system; expand off-property GW collection system; construct deep well purge system; monitoring
1st
GW contaminated with VOCs; particularly TCE and DCE in measurable concentrations
Installation of airstripper; minor piping or supply modifications to existing system; monitoring
2nd
Soil and GW contaminated with VOCs
In-situ vapor extraction of VOCs from contaminated soils; GW extraction and treatment via ultraviolet photochemical oxidation followed by reintroduction of treated GW into aquifer system
1st
Primary contamination is due to VOCs
Excavation and treatment of tar via incineration; biological treatment of contaminated fill
Soil and GW contaminated with PCBs and VOCs
Excavation; thermal destruction; GW carbon adsorption; capping; deed restrictions; and monitoringPresent Worth - 5,902,000O&M - $317,000 (yrs. 1-10), $98,000 (yrs. 10-20)
1st
Soils contaminated primarily with benzene, ethylbenzene, styrene, tetrachloroethene, toluene, trichloroethylene, xylenes, PCBs, heavy metals, and SVOCs;GW contaminated primarily with vinyl chloride, benzene, ethylbenzene, and toluene
Soil vapor extraction of dry well area soils (to meet Michigan Act 307 Type B criteria) followed by excavation and landfilling; construction of cap over lagoon area; extract and treat (to meet MCLs) GW via granular or powder activated carbon, air stripping, chemical oxidation/reduction, or photolysis/oxidation
Contaminants include VOCs, SVOCs, PCBs, pesticides, and metals
Installation of landfill cap; installation of passive gas vents; installation of topsoil and vegetative covering
1st
Landfill contents contain VOCs and PBBs; GW contaminated with VOCs and organics; soil contaminated with organics, inorganics, PBBs, PAHs and pesticides
Removal and offsite treatment of concentrated drums and associated saturated contaminated soils; installation of a RCRA cap over landfill; installation of a slurry wall vertical barrier dewatering system surrounding the landfill; access restrictions, fencing and groundwater monitoring; access restrictions to prevent drinking water wells in the shallow aquifer on the site or in adjacent areas; groundwater monitoring to assess changes in the location of the contaminant plume
VOC contaminated GW; soil and sediments contaminated with PCBs
Construction of cap and slurry wall
Organics pose no current or potential threat
No further action
Soil and GW contaminated with VOCs
Building demolition; solidification/stabilization of surface and subsurface soils in cement-like form; capping of solidified/stabilized soils and sediments; GW collection and treatment associated with construction; GW use restrictions; and fencing
1st
GW contaminated with VOCs
GW pumping and treating using activated carbon adsorption
Final
GW contaminated with VOCs and metals
No Further Action; GW monitoring and inst. controlsPresent Worth - $565,000O&M - $23,000/yr. for 27 yrs.
1st
Sediments contaminated with PAHs; soils contaminated with VOCs and heavy metals
1-foot clay barrer layer under a GCL/geonet with geotextile fabric, FML/42-inch protective layerNet Present Worth - $4,873,950Net O&M - $220,800
VOCs are potential concern
No Action
GW and soils contaminated with VOCs
Installation of leachate collection system; GW extraction and treatment at POTW
1st and 2nd
Operable unit 1: soil and sewer sediments contaminated with VOCs; operable unit 2: GW contaminated with VOCs and chromium
Install GW extraction and treatment system; install vacuum extraction system for soil contamination removal; GW monitoring
1st
Soil and GW contaminated with PCBs, VOCs, organics and inorganics
Onsite solidification of soil and waste; GW pump and treatment with discharge to SW; slurry wall and cap
1st
Landfill gas emissions contain hydrocarbons, benzene, ethylbenzene, xylene and toluene; GW contaminated with VOCs and semi-VOCs; surface water and sediment contaminated with inorganics and semi-VOCs
RCRA Subtitle C soil/clay cap; fencing; deed restrictions on and near the site to prohibit use of the shallow aquifer; continued monitoring to apply towards the groundwater operable unit and to monitor the effectiveness of the new cap
2
GW contaminated with VOCs and SVOCs
No Action; monitoringO&M - $500,000
Soil and GW contaminated with arsenic, lead, and beryllium
No Action: conditions at the site pose no current or potential threat
2nd
GW and soil contaminated with VOCs
GW treatment via extraction using precipitation/flocculation, and air stripping; containment of landfill via 90 centimeter clay cover
Soil contaminated with VOCs
Construct cap to contain landfill; GW pump and treat; fencing; deed restrictions
GW
GW primarily contaminated with 1,2-dichloroethene and bis(2-ethylhexyl)phthalate
Construct Cap over disposal area; extract GW and treat via air stripping, granular activated carbon, and alumina reaction on-site; deed restrictions; monitoring
Interim
GW contaminated with VOCs
GW extraction and treatment via carbon adsorptionPresent Worth - $560,000O&M - $330,000
1st
Sediments contaminated with copper, phenols, ethyl benzene and total xylenes; soil contaminated with xylenes, PCBs, PAHs, toluene, ethyl benzene, phenol, and pentachlorophenol; waste material contaminated with a variety of organic compounds; GW contaminated with organics and inorganics; SW contaminated with mercury
GW monitoring on- and off-site for five years; black tar-like waste material will be removed from site and thermally destructed before landfilling at an approved RCRA facility; contaminated soils and sediments will be excavated, removed, and disposed at an approved facility; on-site ponds will be filled and capped; site will be recontoured to prevent runoff and ponding of water
Amendment
No action with installation of additional monitoring wells to verify that no exposure to risk will occur in the future
GW contaminated with VOCs
No action
1st
GW contaminated with 22 indicator chemicals
Installing extraction wells; treatment; ongoing monitoring
2nd
Aquifer contaminated with VOCs and semi-VOCs
Pump and treat GW; install monitoring wells
3
Soil and sediments contaminated with VOCs
Soil excavation and treatment via low temp. thermal desorption; monitoring; land-use controlsPresent Worth - $6,900,000O&M - $10,000
2nd
SW, sediments and soil contaminated with PCBs
Removal of sediments with PCB concentrations in excess of 500 ppm; extracted PCBs will be disposed of off-site; cap construction with a high density polyethylene liner and soil cover, they will also include extraction well systems which are designed to prevent the migration of PCBs; monitoring wells around the cell perimeters
GW contaminated with metals
No Action; institutional controls (contaminants in plume expected to reach MCLs in 60 yrs)
GW plume contaminated with heavy metals and organics
Extract and treat GW via chemical precipitation followed by pH adjustment; removal of organics via air stripping; discharge of treated water to GW via seepage basin; monitoring; fencing and deed restrictions
1st
Soil and GW contaminated with VOCs, TCE, PCBs, organics, inorganics and pesticides
Onsite thermal destruction of soils; disposal of ash as either backfill or placed in an offsite RCRA facility; GW pump and treatment; fencing
1st
No contaminated media
Second remedial action - final; no further action
1st
GW contaminated with VOCs and SVOCs
Installation of GW extraction wells and slurry wall; construction of on-site treatment system for GW; connection of all residents in vicinity to a municipal water supply; and monitoring
final
Soil contaminated with PCBs, VOCs, and SVOCs
Excavation and thermal destruction of soils; solidification of incinerator ash according to ARARs; solidification of soils contaminated only with metals; backfill ash and treated soil on-site
Soil contaminated with VOCs, primarily PAHs
Soil treatment via soil vapor extraction; pump and treat GW via air stripping; and monitoring
1st
Soil and GW contaminated with VOCs
demolition and off-site disposal of all on-site structures; excavation and off-site incineration of group 1 and 2 soils; in-situ vapor extraction for all site soils; pump and treat GW; installation of fence; and land use restrictions
1st and 3rd
Tailings, slag piles, and soils contaminated with VOCs and PAHs
Deed restrictions to control use of tailing piles; debris removal and off-site disposal; and soil cover
2nd
GW, SW, and sediments
No action
1st
Soil and groundwater contaminated with VOCs
Soil flushing; groundwater (both off-site and on-site) treated on-site using air stripping
GW and soils contaminated with VOCs
Installation of additional extraction wells; installation of soil vapor extraction system
GW contaminated with VOCs
GW extraction and treatment via air stripping or oxidation/photolysis; excav. and off-site disposal of sedimentsPresent Worth - $760,000
1st
Soil contaminated with PCBs and VOCs; GW contaminated with VOCs
Pump and treat GW; containment of landfill vial RCRA-type cap
1st
No contaminated media
No further action
1st
GW contaminated with VOCs
No further action
GW contaminated with PCE
Institutional controls; additional monitoring wells installation; monitoringNet Present Worth - $108,000
Soil and GW contaminated with metals, SVOCs, and PCBs
Solidification/Stabilization and on-site containment for PCB-contamination in excess of 50 ppmNet Present Worth - $2,800,000
1st
Soil contaminated with VOCs
Installation of final cover for landfill; monitoring
2
GW contaminated with VOCs and SVOCs
Long term GW monitoring and institutional controlsPresent Worth - $360,000O&M - $350,000
1
GW contaminated with VOCs
GW capture system; metals iron pre treatment w/diffused aeration; additional aeration rip-rap spillway; lake dischargePresent Worth - $4,196,722O&M - $246,604/yr.
1st
GW contaminated with TCE, PCE and VOCs
GW extraction and discharge of untreated GW to POTW; institutional controls
1st of 2
GW COCs include benzene, cPAHs, nPAHs, arsenic, chromium, lead, nickel, and cyanide
GW in-situ bioremediation induced by oxygen deliveryCapital Cost - $1,565,880O&M - $135,762/yr. over 6 yrs.Present Worth - $2,255,000
2nd
Soil and GW contaminated with VOCs (including TCE, PCE and benzene)
Consolidation of soil and other waste material with site grading and construction of a cap consisting of a gas control layer, a low permeability layer (clay or synthetic membrane), and a drainage layer with soil cover and vegetation; access and deed restrictions; GW and landfill gas monitoring
3rd
GW contaminated with VOCs
Extraction and treatment of GW via advanced oxidation processes
GW and soils contaminated with VOCs
Long-term GW monitoring; conversion of combustible gas monitoring well to gas vent; Landfill stabilization; reconstruction of borrow pit; institutional controls; and maintenance of final cover system
1st
Soil and groundwater contaminated with VOCs
Install groundwater extraction wells; treat contaminated water using an air stripper; discharge treated water to river; treat contaminated soil with an active soil venting system
LNAPL oil plume contaminated with PCPs
Removal of PCP waste oil and sludges; access restrictions; GW treatment; monitoring
1st
Waste material, debris, soils, and sediments in the disposal pit area contaminated with PCP, PAHs, chromium and arsenic
Excavate soil and debris; rinsing and landfilling or recycling of non-burnable debris; drying and incineration of wood debris; treatment and disposal of bottom ash and fly ash; soil washing of contaminated soils ; backfilling of treated soils; and discharge of soil washing effluent, rinse water, and water from dewatering operation to POTW
3rd
Waste material, debris, soils, and sediments in the disposal pit area contaminated with PCP, PAHs, chromium and arsenic
Soil excavation and on-site incineration of organics-contaminated soils; on-site solidification/stabilzation of metals-contaminated soils; removal and off-site disposal of underground tanks and vaults; GW extraction and treatment via New Brighton Aquifer in an on-site biological wastewater facility; institutional controls; monitoringNet Present Worth - $2,300,000 (GW) $15,700,000 (soils)
Soil and GW contaminated with TCE
Installation and operation of hydraulic containment and recovery wells
Sub
GW contaminated with VOCs, PCE and TCE
Water treatment facilities with discharge to municipal water
Sub
GW contaminated with VOCs and metals
GW pump and treatment; onsite reinjection to aquifer
3rd
Off-TCAAP GW contaminated with VOCs - primarily trichlorethene, Cis-1,2-dichloroethene, 1,1-dichloroethene, 1,1-dichloroethane, 1,1,1-trichloroethane, and 1,1,2-trichloroethane
GW extraction and treatment via granular activated carbon, discharge to New Brighton Municipal water supply; and monitoring
1
GW contaminated with VOCs, metals, and explosives
Alternate water supply (muni); extract and treat GW via GAC; discharge to NPDES; monitoringPresent Worth - $10,300,000
2nd
None
No action
1st
Soil, GW and SW contaminated with VOCs (including toluene and xylenes)
Deed and access restrictions; capping with low permeability layer, and top soil cover and vegetation; air and GW monitoring
2nd
GW contaminated with vinyl chloride, benzene, toluene, xylene, arsenic, and barium
Continued monitoring of aquifers
GW contaminated with arsenic
Institutional controls; recovery wells; filtration; alumina adsorption; infiltration gallery; and provide municipal water to resident$2,548,776
Aquifer contaminated with PAHs
Pump and treat contaminated GW
Northern Area of the Drift Aquifer contaminated primarily with PAHs
Interception and containment of contaminants via gradient control wells; discharge routed to Metropolitan Waste Control Commission wastewater treatment plant; and monitoring
Soil contaminated with PCP
Wood treating equipment decontamination; soil washing; incineration off-site; ex-situ biremediation of pentachlorophenol-contaminated soils; deed restrictions; monitoringNet Present Worth - $4,102,974-$5,280,191
1st
GW contaminated with organics and inorganics
Extract groundwater from surficial aquifer; provide municipal water to private well users on or near the site; monitor groundwater movement at the site; place restrictions on new wells on or near the site
2nd
Soil contaminated with CPAHs, PCBs, and antimony
Excavation and treatment of soils via above-ground biological treatment; off-site disposal at permitted landfill
1st
Tar contaminated with cPAHs
Excavation of tar; burning of tar for energy recovery
1st
Soil contaminated with PCBs
Contaminated soil will be treated using a mobile thermal treatment system
1st
GW and soil contaminated with VOCs (TCE, PCE)
Installation of GW extraction wells; treatment of GW through packed tower aeration
1st
GW contaminated with VOCs and organics; landfill covered with lime-sludge cap
Installation of a RCRA cap; GW pump and treatment using carbon adsorption with offsite discharge to Coon Creek; installation of a clay slurry wall; implementation of institutional controls including well use restrictions; site monitoring
1st
GW contaminated with VOCs
Grading and capping fill area with clay cap overlain by granular material, topsoil, and new vegetation; modifying existing municipal water plant
2nd
GW and soil contaminated with benzene, cyanide, naphthalene, phenolics, ammonia, sulfates, chlorides and PAHs
Construction of a low permeability slurry wall around the disposal area from ground surface into the low permeability bedrock; multimedia RCRA compliant cap; continuous extraction and on-site treatment of groundwater within the containment system and outside the containment system until cleanup standards are achieved; municipal water hook-up for in-plant potable and sanitary uses until groundwater meets cleanup standards; deed restrictions; supplemental RI/FS
2nd
GW and soil contaminated with ammonia, benzene, cyanide, metals, naphthalene, phenolics, and PAHs
Incineration of ~122,000 cy of lagoon waste; in-situ bioremediation of ~457,000 cy of lagoon waste; prepared-pad surface bioremediation of ~40,000 cy of soils; GW pump and treat on-site
1st
Soil contaminated with PCBs, and metals including chromium, cyanide, and arsenic
Excavation of sludge contaminated with greater than 500 mg/kg of PCBs; off-site incineration and disposal
2nd
GW and sediments contaminated with antimony, beryllium, total chromium, total cyanide, fluoride, lead, and bis (2-ethylhexyl) phthalate
Natural flushing and attenuation of contaminants in aquifer to meet GW MCLs under the SDWA; monitoring; institutional controls; and deed restrictions;
Soil contaminated with VOCs
Construction of landfill cap; institutional controls; fencing; monitoring
Final
Soil and GW contaminated with VOCs, SVOCs and inorganics
Single barrier cap; gas controls; SW run-off controls; monitoring; and inst. controlsPresent Worth - $8,145,300O&M - $2,125,900
1st
GW, SW, leachate and sediment contaminated with VOCs, PAHs, and metals
Cover landfill with a low permeability cap; complete site fencing and posting; deed restrictions; site grading; revegetation; monitoring
1st
GW and soil contaminated with VOCs and metals
Dewater landfill; treat collected liquids through airstripping and carbon adsorption; construction of cap and slurry wall
3
200 buildings and structures contaminated with uranium and thorium and their decay products
This interim ROD consists of decontaminating and dismantling all OU3 structures and related facilities; temporary storage of bulk of the debris and remediation waste; treatment and final dispositon will be addressed in final ROD for OU3 in 1997
OU 4 Final
COCs include VOCs, heavy metals, pesticides, radionuclides
Removal, vitrification, and off-site disposal of Silo 3 contents; demolition, removal and on-site disposal of Silos 1 and 2 contentsPresent Worth - $91,700,000
Final OU 1
COCs include radionuclides, silver, arsenic, lead, copper, cyanide, PCBs, PAHs, dioxins, furans, and others
Removal, treatment (drying), and off-site disposal at a permitted commercial disposal facilityPresent Worth - $389,509,000
Soil and GW contaminated with VOCs
Contain landfill via capping; install leachate collection system; pump and treat GW
Sub
GW contaminated with organics and inorganics
Alternate water supply
1st
Key contaminants affecting soil, sediment, and GW are VOCs (benzene, PCE), other organics (methane, PAHs), and metals
Installation of multilayer RCRA cap to prevent surface water infiltration; expansion of venting system; extraction and treatment of contaminated GW; dredging of pond sediment and incorporation under cap
1st
Soil and GW contaminated with inorganics, BN-VOC, PAH and PCBs
Onsite incineration of soil; offsite disposal of incinerator ash; offsite disposal of all tanks
2nd
Soils, sediments, GW and wastes contaminated with dioxin
Drain ponds with treatment if required; backfill ponds with clean fill and grade; thermally treat contaminated soil, ash and debris and dispose of ash on-site (if delistable) or off-site in a RCRA landfill; demolish and thermally treat or decontaminate dioxin-contaminated structures, if material can't be decontaminated or thermally treated, contain material in an on-site concrete vault and place beneath a cap for temporary storage; construct a GW diversion trench up-gradient of the contaminated soil and GW; construct a multi-layer cap over soils in exceedance of 10-6 excess lifetime cancer risk; de-water site by natural GW flow to creek; GW and SW monitoring; access and use restrictions
1st
GW contaminated with vinyl chloride, trichloroethene, methylene chloride, tetrachloroethene; soils contaminated with lead
Fence landfill area; post warning signs; deed notification/property use restrictions; ongoing monitoring; grade and cap landfill with single barrier cap
Soil, sediment, GW, and leachate COCs include PCBs, PAHs, cyanide
In-situ soil flushing; PCB and PAH-cont. sed. removed via dredging; off-site disposal of PCB-cont. sed. in excess of 50 ppm; capping of Construction Materials Scrap Dump; GW extraction and treatment via ferrous salt precipitation and clarificationCapital Cost - $12,000,000O&M - $1,300,000/yr.Present Worth - $17,400,000
Soil and GW contaminated with VOCs, SVOCs, pesticides, PCBs, and metals
Improved landfill cap; soil consolidation under cap; on-site GW treatment; discharge to river; institutional controls; and monitoringPresent Worth - $20,510,000O&M - $544,000
1st
Groundwater contaminated with VOCs, semi-VOCs, and inorganic compounds; sediments and soils contaminated with VOCs, semi-VOCs and pesticides
Excavation and on-site consolidation of sediment and soil; in situ vitrification, extraction/treatment of groundwater using air stripper; decontamination of structures and disposal at a solid waste landfill; access and deed restrictions and groundwater monitoring
1st
GW contaminated with VOCs and semi-VOCs; soil contaminated with semi-VOCs and inorganics
Excavation of contaminated soil and disposal according to RCRA regulations; monitoring to include conducting a fish species survey and fish tissue bioassay to assure the absence of contaminants; resampling groundwater to assure concentrations of contaminants are at acceptable risk levels
2
GW and soils contaminated with VOCs, metals, SVOCs, PAHs, PCBs, and inorganics
Capping of dump and lagoon, diversion of upgradient GW via barrier wall; SVE; inst. controlsPresent Worth - $16,031,900O&M - $397,000
1st
GW contaminated with organics; soils contaminated with organics, PAHs and PCBs; surface water, sediments and buried material contaminated with organics and inorganics
Limiting access and future use of site; monitoring surface and ground water; removal of on-site structures and placing debris in an off-site permitted landfill or under the multi-layer cap; excavation/incineration of hot spot soils, sediments, drums and tanks; placement of incinerated material in a RCRA landfill; installation of a multi-layer cap; slurry wall around site; installation of wells over the site to extract and treat groundwater and surface water on-site; revegetation of site; relocation of a residence affected by the site
Amend- ment
Soil contaminated with VOCs
Expansion of site boundaries; excavation and incineration of soils and sediments; demolition of all on-site structures; GW extraction and treatment; soil cover over 10.6 acres of site; and rerouting drainage ditches
1st
Soil and battery casings contaminated with lead
Treat casings on-site (washing with lead recovery) with off-site disposal of residuals (non-RCRA landfill) with non-hazardous residuals placed back on-site; clean fill to cover treated soils and revegetate; on-site and off-site soils washed on-site with lead recovery; sediments dewatered on-site then placed with treated soils; building/facilities and debris decontaminated and disposed off-site (non-RCRA landfill); new residential well; minimal deed restrictions; site drainage controlled; groundwater/surface water monitoring
Soil and sediments contaminated with VOCs and SVOCs
Off-site disposal of wastes not suitable for on-site containment; construction of on-site RCRA C cap for remaining soild wastes; bioremediation of organic contaminants in seep sediments; natural attenuation of GW; institutional controlsNet Present Worth - $4,564,880Net O&M - $855,230
1 of 12
GW and soil contaminated with VOCs, heavy metals, PCBs, and dioxin
Capping; leachate collection and treatment; alternate water supply; LF Gas collection and treatment; O&MPresent Worth - $28,940,000O&M - $1,630,000
Off-Source
Landfills 8 and 10
No Action
Soil and GW contaminated with VOCs
GW pump and treat; soil treatment via in-situ vapor extraction; fencing
final
Soil and GW contaminated with VOCs
Soil/clay cover; install additional GW monitoring wells
1st
GW contaminated with heavy metals, cyanide, and VOCs
Continued operation and maintenance of GW extraction and treatment facility; berm construction to divert surface water flow; installation of additional extraction wells
Soil and GW contaminated with VOCs
GW extraction and treatment via chemical oxidation; GW use restrictions; GW monitoring; RCRA Subtitle D landfill cover over majority of site, and Subtitle C landfill cover over two areas of landfill that received substantial amounts of industrial waste; gas venting and treatment
1st
Groundwater contaminated with VOCs
Treat contaminated municipal water with an existing air stripper; provide municipal water to private well users within or near the area of groundwater contamination; install groundwater extraction wells in the plumes of contamination; discharge untreated groundwater from extraction wells to the Chippewa River
Buried drums contained high concentrations of lead, chromium, DDT, arsenic, petroleum-derived hydrocarbons
Excavation and off-site recycling or treatment and disposal of drummed wastes; containment of landfill via capping
Source Control OU; VOCs have been detected in soil gas, leachate and on-sit GW wells
Install cap; in situ vapor extraction of waste refuse and subsurface soils in disposal area A; off-gas treatment through carbon adsorption
2nd
GW contaminated with VOCs
GW extraction and treatment via activated sludge biological treatment; GW discharge to wetlands or Yahara River; deed restrictions; and bench scale study implementation
Landfill and GW contaminated with VOCs, PAHs, PCBs, and metals
Landfill cap; construction of slurry wall; extraction and off-site treatment of GW; construct and install active landfill gas collection and destruction system
Source Control
Interim Remedy - No further action - source control action was addressed under Dodge Cty Circuit Court Order that eliminated potential exposure to contaminants
GW contaminated with VOCs and SVOCs
GW pump and treat; capping of landfill; construction of slurry wall; and monitoring
2nd
No Further Action
1st
Soil and GW contaminated with VOCs
Construct clay/soil cap; extract and treat GW as an interim measure; monitoring
1st
GW and surface water contaminated with arsenic, cadmium, chromium, copper lead, DCE, PCE, benzene and toluene; soil also contaminated with VOCs
Fill material containment via clay/soil cap; pump and treat GW
1st
GW contaminated with VOCs, benzene, nickel, iron and manganese
Site capping with a soil/clay cap; site monitoring including groundwater, surface water and landfill gas; alternate water supply; improvement of surface water drainage; off-site treatment of leachate; fencing and sign posting; on-site road construction; institutional controls; landfill gas flaring and sludge stabilization will be implemented if required
1st
PAH, BTX, and CPAH contaminated on-site soil; sediments contaminated with PAHs and CPAHs
Removal and treatment of on-site soil via on-site bioremediation; treat residuals on-site; reroute river; fill in existing channel; collect and treat GW
GW COCs include VOCs and metals
Non-contiguous fill area GW extraction and treatment via air strippingPresent Worth $7,400,000
1st
OU addresses alternate water supply contaminated with VOCs
Construction of well field, storage, and distribution system; extension of municipal water supply to affected residential and business areas; closure and abandonment of private wells; monitoring
1st
Soil, sludge and GW contaminated with VOCs, organics and inorganics
Onsite solidification of sludge and soil; RCRA cap; institutional controls to include deed and access restrictions
Soil and GW contaminated primarily with chromium
Building demolition and removal; excavation and off-site solidification of soils in excess of 500 mg/kg total chromium; capping site with 2' clay soil and topsoil; installation of GW trenches; GW treatment via precipitation; institutional controls; monitoringTotal Present Worth - $10,090,000O&M - $220,000
1st
Soil and GW contaminated with VOCs
Extraction and treatment of GW plume; reconstruct landfill cap; insitu bioremediation of naphtha-contaminated soils; monitoring; deed restrictions
1-4
1st through 3rd OUs address GW contaminant plume; 4th OU addresses Davy Creek contamination; site contaminated with heavy metals
Soil, lagoon, and plume excavation
Source Control
GW contaminated with VOCs, primarily 1,1-DCA and 1,1,1-TCA
Regrading landfill surface; fencing; installation of gas extraction system; institutional controls; monitoringPresent Worth - $832,000O&M - $28,200/yr.
Sub
Soil contaminated with lead and chromium III
Cap approximately 7 acres of soil
1st
Sludge disposal pit contaminated with mercury brine muds; landfill contaminants include asbestos, toluene, xylenes, methyl-ethyl ketone, and methylene chloride
Landfill closure; construct landfill cap and install active landfill gas control system; close mercury brine pit; treat contents of the pit via solidification/stabilization; and install impermeable cap over pit; and monitoring
Soil and GW contaminated with VOCs
construction of cap over site; pump and treat GW; fencing; land use restrictions; and monitoring
1st
GW contaminated with VOCs
Installation of an extraction well located in the southern portion of the contaminant plume; implementation of a treatment system for removal of contaminants; discharge of treated water to river; a provision for implementation of an additional well as necessary
2nd
Soil and groundwater contaminated with VOCs
Treatment or contaminated soil using in situ soil vapor extraction; pump and treat groundwater using existing airstrippers with modified pumpage rates
1st
Site contaminated with VOCs and PAHs
Construct cap; consolidate waste and soil onto original disposal area; limit land and GW use; monitor GW
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.