SUPERFUND Records Of Decision Update From: Hazardous Site Control Division January 31, 1986 To: EPA Regional Offices Vol. 2, No. 1 ROD SUMMARIES BOG CREEK FARM, REGION II, NEW JERSEY (Approved 9/30/85) Description: The site was owned by in- dividuals who also owned a paint manufacturing plant. In 1973 and 1974, the owners allegedly dumped bulk liquids and sludges in a trench onsite. The original volume of wastes is estimated to be 2,400 cubic yards, with high concentra- tions of volatile organics (as high as 180,000 ppm for toulene). Residential wells are not threatened. A small bog and pond are heavily con- taminated. Decision: Remove contaminated water and sediments from pond and bog, regrade and cover; treat wastewater. Excavate contaminated mater- ials with greater than 10,000 ppm VOC, incinerate. Cap and fence site. Analyze other potential remediation activities, in- cluding soil washing, for addi- tional contaminated soils. Issues: Soil washing to be explored as further remedial measure for soils with less than 10,000 ppm VOCs. Contacts. Region: Eric Swartz FTS 264-1253 Headquarters: John Kingscott FTS 382-7996 D'IMPERIO PROPERTY, REGION II, NEW JERSEY (Approved 3/27/85) Description: This historic dumping site con- tains waste both at the surface and buried in the soil. The soil and ground water are contam- inated. Wetlands abut the site on two sides. Decision: Excavate contaminated soils and wastes and dispose of these offsite. Extract and treat ground water from two aquifers using pre- cipitation, flocculation, sedi- mentation, and steam strip- ping technologies; discharge treated water into surface or ground water Cap site to RCRA standards Issues: Site is environmentally sen- sitive area and will affect deci- sion regarding the location of treated discharge Contacts: Region Don Lynch FTS 264-8216 Headquarters: John Kingscott FTS 382-7996 ACME SOLVENTS, REGION V, ILLINOIS (Approved 9/27/85) Description: Solvents, paints, empty drums, and residues from solvent reclamation were stored on- site. In 1972, these materials were pushed into drained treatment lagoons or left in piles and covered with dirt. Contaminated ground water has migrated from the facility, affecting nearby residential wells The site contains 26,000 cubic yards of contaminants, including VOCs, PCBs, and wastes with flashpoints as low as 25°C Decision: Install interim home carbon treatment units in affected homes. Excavate and incinerate waste and contaminated soil; remove non-incinerables to offsite RCRA sites. Continue to investigate bed- rock contamination and con- taminated ground water plume control Contacts Region- Paul Bitter, Dave Favero FTS 886-4742 Headquarters. Kitty Taimi FTS 382-2449 Ed Barth FTS 382-7998 ------- CHARLEVOIX MUNICIPAL WELL, REGION V, MICHIGAN (Approved 9/30/85) Description. The City's municipal well and shallow ground water aquifer are contaminated with TCE and PCE. In June 1984, an IRM for an alternate water supply to replace the contaminated municipal well was approved There is no current, iden- tifiable source of contamina- tion; it was caused by either a single spill or a source that was subsequently removed Decision Contaminant plumes will at- tenuate into Lake Michigan under natural conditions. Continue monitoring plumes. Restrict new private wells in aquifer. Issues- Plume attenuation selected over active restoration of aquifer. State of Michigan currently does not concur with remedy Contacts. Region: Jack Kratzmeyer FTS 353-6449 Headquarters: Carol Lindsay FTS 475-6704 NORTHERN AIRE, REGION V, MICHIGAN (Approved 9/11/85) Description Surface soils onsite have been contaminated with chromium and cadmium Sewer lines car- rying waste water from an electroplating plant leaked at joints and contaminated a dry well Contaminated water entered highly permeable soils The extent of ground water contamination is not yet known Decision Excavate soils, sewer line sediments, and drywell under- lying facility; dispose offsite Fill with uncontaminated soil. Response objectives are 50 mg/kg chromium, 10 mg/kg cadmium. Defer decision on ground water treatment for future ROD Contacts. Region Mary Elaine Gustafson FTS 886-6144 Headquarters. Kitty Taimi FTS 382-2449 DEL NORTE PESTICIDE STORAGE, REGION IX, CALIFORNIA (Approved 9/30/85) Description: The site was a county storage yard for empty containers of herbicides, pesticides, and some industrial wastes. In- vestigation showed that not all drums had been rinsed, nor were all empty Some were corroded and broken. A sump pond onsite had high concen- trations of chemicals. Ground water contamination has oc- curred. Chromium, assumed to be unrelated to the site, was also found in the ground water. Decision: Excavate to background for organic pesticides, remove and dispose of approximately 700 cubic yards of con- taminated soils offsite. Extract contaminated ground water Pretreat ground water using carbon adsorption for organic pesticides, using coagulation and sand filtration for chromium to levels accep- table for discharge to the POTW Dispose of treated ground water into county sewpr system. Monitor ground water. Contacts: Region Michelle Dermer FTS 454-8144 Headquarters: Steve Hooper FTS 475-6689 PONDERS CORNER, REGION X, WASHINGTON (Approved 9/30/85) Description: A cleaning business deposited dry-cleaning liquids and solvents into septic systems and onto the ground outside the building. Two municipal wells, which supply about 10 percent of the local water district's drinking water needs and fire protection, have been contaminated. Interim measures included pumping septic tanks and disposal of pumped material and installa- tion of air-stripping on affected wells. Decision: Pumping the municipal wells has reduced plume concentra- tions; therefore continue operations of wells and ex- isting treatment system with minor upgrading and monitor. The target cleanup level for the aquifer is 10"6, but the final decision has been deferred. Excavate and remove septic tanks and associated pipes from behind the cleaning business; dispose of offsite; fill excavated area. Restrict future uncontrolled excavation to prevent direct contact with low levels of TCE remaining in soil column. Contacts Region Carol Thompson FTS 399-2709 Headquarters: Steve Hooper FTS 475-6689 ------- ENFORCEMENT DECISION DOCUMENT CHEM-DYNE, REGION V, HAMILTON, OHIO (Approved 7/5/85) Description: Chem-Dyne accepted in- dustrial wastes of virtually all types. Wastes were stored on the site in drums, bulk tanks, and railroad cars. More than 30,000 drums and 300,000 gallons of bulk materials were found onsite when the opera- tions were shut down. Wastes leaked into trenches, onto the ground, and into sewers. All waste materials, drums, tanks, and other bulk storage facilities were removed and disposed of offsite by EPA in late 1983. Soils and onsite structures were heavily con- taminated with a wide variety of hazardous substances. Ground water is contaminated by a plume consisting primari- ly of volatile organics This plume threatens nearby in- dustrial wells and the City of Hamilton's drinking water sup- ply four miles downgradient Decision: Extraction, treatment, and re- injection of contaminated ground water Operate system for a minimum of 10 years Concentrations of hazardous substances in monitoring wells immediately outside the contaminant plume must not exceed background levels or human health criteria (at 10~6 risk). Ground water pumping must continue until concentra- tions of total VOCs are below 01 ppm in each monitor well within the plume and more importantly until concentra- tions become "effectively con- stant" in each well within the plume Further, a demonstra- tion must be made before ter- mination, both by sampling and by the use of a ground water contaminant transport model, that remaining concen- trations of contaminants within the plume will not migrate from the site at con- centrations in excess of esta- blished human health criteria Excavation of "hot spots" of contaminated soils. RCRA Part 264 cap over the re- maining contaminated soils Demolition of all buildings on- site, uncontaminated building rubble left onsite beneath cap. Extensive monitoring pro- grams. Issues: Deferment of the ACL deter- mination (i.e., establishing final ground water protection standards) until after remedial technology achieves effective- ly constant concentrations of contaminants Contacts: Region: Tom Barriball FTS 886-7239 Headquarters: Kate Sellers FTS 382-7790 A Line on RODsmbm ROD WORKSHOP Last spring's highly successful ROD training course will make its return on February 25 and 26 at the Ramada Hotel in Old Town Alexandria, Virginia This course is designed to promote national consistency in ROD decision-making by informing Regional technical and legal staffs of the latest ROD pro- cedures and policy develop- ments and by providing a forum for sharing specific site ex- periences Topics on the agenda for this session include the latest news on CERCLA reauthorization, a review of the recent NCP revi- sions, and a discussion of some mechanics of the ROD process such as review on the record, the role of EDDs and NDDs vs. RODs, how to amend a ROD, new proposed delegation criteria and procedures, the state role in the ROD process, and the ROD information net- work Policy issues to be discussed will include the RCRA/CERCLA interface, selec- ting alternative technologies, ground water risk management, the offsite policy, and PCBs, among others A number of rooms are being held for Regional participants at the Ramada To reserve a room, please call the hotel directly at (703) 683-6000. To register for the course, please call Mary Gade in Region V at FTS 886-6851 Funding and travel restrictions may prevent repetition of the course in Dallas later this spring as originally planned. Therefore, an attempt will be made to videotape the Washington ses- sion for distribution. HOW TO ORDER REMEDIAL ACTION HANDBOOK The revised edition of the ORD/OSWER Handbook on Re- medial Action at Waste Disposal Sites (described in the last ROD Update) may be ordered by call- ing FTS 684-7562 or (513) 569-7562 The document number is 625/685/006. ------- |