SUPERFUND Records Of Decision Update From: Hazardous Site Control Division To: EPA Regional Offices August 29, 1986 Vol. 2, No. 5 ROD SUMMARIES FLORENCE LAND RECON- TOURING LANDFILL REGION II, NEW JERSEY (Approved 6/27/86) Description: • This 29-acre landfill is con- structed over an aquifer that is a major source of drinking water. Leachate from the land- fill could potentially infiltrate the aquifer. The landfill was given permits to accept non- chemical sanitary and in- dustrial sludge, septage, and sewage sludge throughout the 1970s. Investigations showed that chemical wastes had been disposed of onsite. A consent order defining control measures to be undertaken by the owners was issued in 1979. Compliance was spotty; leachate control was inade- quate. Local domestic wells show levels of contamination below minimum drinking water standards, although there is evidence of migration of con- taminants offsite. Decision: • Construct ground water inter- ceptors, stormwater manage- ment system, slurry contain- ment wall, and cap around contaminants. • Treat and dispose of leachate offsite. • Collect gas and treat. • Remove and dispose of lagoon liquids, sediments, and other debris. • Construct fence; post warning signs; sample ground water, surface water, and sediments during design. Contacts: • Region: Joyce Perdek FTS 264-8476 • Headquarters: Bob Quinn FTS 382-2350 METALTEC/AEROSYSTEMS REGION II, NEW JERSEY (Approved 6/30/86) Description: •Two manufacturing busi- nesses operate onsite. Two aquifers underlying the site have been contaminated with organic chemicals. The aquifers are used to provide the drinking water supply for both municipal and private wells. Water supply wells for the Borough of Franklin and three domestic wells were removed from service in 1980. In 1981, an administrative order was issued to the Metaltec Corporation to clean up existing contamination and conduct a hydrogeology study. The order was not fully com- plied with; EPA took the lead for site activities in 1984. Decision: • Excavate and dry 10,000 cubic yards of contaminated soils; excavate 4,000 additional cubic yards of contaminated soils; dispose of offsite. • Prepare a supplemental RI/FS to identify the extent of ground water contamination and evaluate remedial alter- natives. • Provide alternate water supply for Borough of Franklin residents by constructing a pipeline to Borough of Ham- burg system. Contacts: • Region: Christine Schultz FTS 264-1213 • Headquarters: John J. Smith FTS 382-7996 MILLCREEK SITE REGION III, PENNSYLVANIA (Approved 5/07/86) Description: • The site was a wetland that was filled in with founds slag, except for 2 acres in the southern portion. Unpermit- ted disposal activities oc- curred on this 84.5-acre site. Surficial soils and ground water underlying the site are contaminated with a wide variety of organic chemicals and metals. Shallow ground water discharges into an adja- cent stream, which has an abundance of aquatic life and discharges into Lake Erie. Af- fected ground water is not currently used as a drinking water source. Seventy-five liquid-filled drums were re- moved under a planned re- moval process in November 1983. ------- Decision: • Excavate and consolidate soils and sediments under RCRA cap. • Pump and treat contaminated ground water to meet a target 10"6 risk level, with at least a 1CM risk level attained within 2 years. • Construct surface water management basins and ditches. • Construct monitoring wells to assist with remedial design and to be used for monitoring over at least a 2-year period. • Cover remaining soils, which contain low levels of con- taminants, with uncontami- nated soil. Issues: • Although ground water is not currently used for drinking water downgradient of the site, ground water remedia- tion to a target level of 10-6 and a 2-year time frame was selected because effective in- stitutional controls and pro- tection of environmental receptors could not be en- sured over the 125 years estimated for natural attenua- tion of the contaminant plume. At the end of 2 years, the risk level will be assessed to determine what additional measures, if any, are needed to reach the 10~6 risk level. • Proposed soil criteria to be reevaluated during design. Contacts: • Region: Dom Digulio FTS 597-3435 • Headquarters: Lisa Woodson FTS 475-8246 WESTLINE SITE REGION III, PENNSYLVANIA (Approved 7/03/86) Description: • A plant onsite produced char- coal, acetic acid, and metha- nol from lumber from the turn of the century until the mid-1950s. Waste tar deposits that exhibit low levels of poly- nuclear aromatics are found throughout the site. The un- derlying aquifer is used for the domestic water supply. In 1983, the largest of the waste tar deposits was removed as an emergency action under CERCLA. Decision: • Excavate waste tar and inciner- ate offsite; backfill and re- vegetate excavated areas. • Target cleanup level is 10" risk level (similar to back- ground levels found) based on contact with soils over a 20-year period. The target cleanup level for the soil will also ensure that a 10-6 risk level will not be exceeded in the ground water. • Monitor air quality; conduct ground water contamination verification study. Issues: • Vocal members of community preferred no action alter- native. Contacts: • Region: Roy Schrock FTS 597-0913 • Headquarters: Lisa Woodson FTS 475-8246 A.L. TAYLOR SITE REGION IV, KENTUCKY (Approved 6/18/86) Description: • The site was used for in- dustrial waste disposal. Re- quired waste disposal permits were never acquired by the owner/operator of the site. The site has been known as the "Valley of the Drums"; over 17,000 drums were inven- toried on the surface in 1970. Underlying ground water is unusable for drinking water and has never been used as a water supply. A small creek subject to seasonal flows is adjacent to the site. In 1979, under the authority of the Clean Water Act, EPA pre- vented further release of pol- lutants into the creek by con- structing surface water con- trols, securing leaking drums, and segregating and organiz- ing drums onsite. In 1980, six potentially responsible par- ties removed approximately 30 percent of the waste on the surface. In 1981, EPA removed the remaining 4,200 drums on the surface as an emergency action. Decision: • Consolidate and cap con- taminated sediments, sludge, and materials. • Construct surface water divei sions; monitor site. • Construct chain link fence around site. Issues: • No action on ground water is anticipated because of the Class III characteristics and low yield of the affected aquifers, which are not cur- rently used nor expected to be used as drinking water sources. Contacts: • Region: Al Cherry FTS 257-2643 • Headquarters: Lisa Woodson FTS 475-8246 NEW BRIGHTON/ ARDEN HILLS/ST. ANTHONY REGION V, MICHIGAN (Approved 6/30/86) Description: • A large aquifer that supplied drinking water for sever- al communities was con- taminated by four possible sources: an industrial area, a second commercial/industrial area, an ammunition plant and several sites located with in a kame deposit. Several ini- tial remedial measures have been implemented to protect New Brighton's water supply. TCEs and VOCs are the prima- ry contaminants. Decision: • Construct new well into Mt. Simon-Hinckley aquifer system to replace New Brighton Well No. 7. Issues: • Comprehensive Rl and phas- ed FS currently being con- ducted at the site by the state. Possibility of further remedial actions in the future to ad- dress contamination in entire aquifer. Contacts: • Region: Gene Wong FTS 353-6341 • Headquarters: Carol Lindsay FTS 475-6704 ------- NOVACO INDUSTRIES REGION V, MICHIGAN (Approved 6/27/86) Decision: • A plating operation used an underground tank to hold chromic acid. The tank leaked an unknown quantity of con- taminant into a shallow sandy aquifer used for the residen- tial and commercial water supply. This aquifer may transmit to an aquifer in lime- stone bedrock below. The owner/operator treated water onsite from July to November 1979 but did not remove all of the chromium. Hexavalent chromium was found in drink- ing water supplies in 1984 and 1985. Wells have been con- structed into the deeper aquifer for all those who use ground water as a source of drinking water. Decision: • Extract ground water, treat onsite, and discharge into sur- face water. Contacts: • Region: Mary Elaine Gustafson FTS 886-6144 • Headquarters: Carol Lindsay FTS 475-6704 ONSITE INSIGHTS This is the first installment in a new series of ongoing articles we hope to include as a semi- regular feature of the ROD Update. ONSITE INSIGHTS will provide you with glimpses of new technologies and tech- niques used by your colleagues at Superfund sites around the country. We will report on new remedial technologies, new tech- niques for field investigations, new applications of existing remedial technologies, useful program and contract manage- ment techniques, and interest- ing results of remedial actions. The focus is on technology, but we will report on anything that might have useful applications for you in your daily work. Do you know of a site where there are interesting or impor- tant new techniques being CECIL LINDSEY REGION VI, ARKANSAS (Approved 4/23/86) Description: • This privately owned 5.2-acre site was used for waste dis- posal and salvage from the early 1970s to about 1980. In- dustrial wastes were probably disposed of onsite. No pri- mary drinking water stan- dards were exceeded in any onsite ground water samples. Decision: • Restrict site access; install monitoring wells. • Monitor ground water for one year using monitoring wells and existing onsite wells. • Remove and dispose of con- tainerized waste. Contacts: • Region: Steve Gilrein FTS 729-2737 • Headquarters: Dave Huber FTS 475-6706 DES MOINES TCE REGION VII, IOWA (Approved 7/21/86) Description: • A manufacturing business on- site used degreasing solvents used? We'd like to know — and we'd also like to know what you think of ONSITE INSIGHTS as a new feature of the ROD Update. Headquarters contact: Betsy Shaw FTS 382-3304 UPDATE ON MULTI-SOURCE GROUND WATER REMEDIATION AT BISCAYNE AQUIFER, REGION IV Where a Superfund site is only one among a number of signifi- cant contributors to ground water contamination, EPA is in favor of cooperating with other responsible entities to remediate the problem jointly and com- prehensively. A ROD has been produced for a multiple source ground water contamination area involving a significant aquifer in and disposed of oily sludge wastes in parking lots and in drainage ditches for dust con- trol. A ground water infiltra- tion gallery underlying the site is used for the water supply for the City of Des Moines. A major local river runs adjacent to the site. TCE is the indi- cator contaminant. Decision: • Extract and collect con- taminated ground water; isolate portion of aquifer con- taining contaminants. • Treat ground water with air stripping technology to remove 96 percent of the TCE. • Operate wells until effluent contains less than 5 micrograms per liter of TCE for 4 consecutive months. Issues: • Source control operable unit to follow; duration of opera- tion of some extraction wells to be determined as a part of source control operable unit. Contacts: • Region: Alice Fuerst 757-2856 • Headquarters: Carol Lindsay 475-6704 Florida. The ROD included a 20-point protection plan that re- quired implementation of ground water protection activities by three local governments. Results have been promising; all three governments have begun to im- plement portions of the plan. Contact: Jim Orban Region IV FTS 257-2643 COST-SAVING SAMPLING TECHNIQUES IN ARIZONA, REGION IX The Spinner logging technique involves the use of a down hole flow meter to measure flows at different levels. Depth-specific water quality samples are taken, and temperature, conductivity, and gamma logs are run. This technique has been used in ------- Florida but has not previously been used at hazardous waste sites. Spinner logging and depth of ex- isting production wells will be used by the Rl contractor at the Indian Bend Wash and Phoenix- Litchfield sites in Arizona. Rl costs will be reduced because the number of depth-specific wells will be reduced. Solvent- contaminated ground water ex- tends over 15 square miles to a depth of 1,000 feet through a multi-layered alluvial aquifer system. Contact: Jeff Rosenbloom Region IX FTS 454-7513 A LINE ON RODS mmm FY'85 ROD Annual Report Available The Hazardous Site Control Divi- sion published the FY'85 ROD Annual Report on June 30,1986. This report presents summary statistics of the types of remedies selected in Records of Decision (RODs) approved last fiscal year and provides in- dividual summaries of each ROD that highlight performance targets and the use of institu- tional controls. The report con- cludes with a key word index and an overall Index of Approved Remedial Actions, which in- cludes all Records of Decision signed through September 30, 1985. Copies of this report have been mailed to the Superfund Branch Chiefs, Waste Manage- ment Division Directors, Regional Counsels, and libraries in the Regions and have been circulated throughout Head- quarters. The FY'85 ROD Annual Report, like the RODs themselves, is available to the public from the following sources: Environmental Law Institute 1616 P Street, NW Suite 200 Washington, D.C. 20036 202-328-5150 National Technical Information Service Customer Services 5285 Port Royal Road Springfield, VA 22161 703-487-4600 FY'86 RODs Considering Treatment A review of FY'86 RODs ad- dressing source control actions showed that treatment technologies are being evaluated in the RI/FS. The im- portance of evaluating treatment technologies and closely evaluating the long-term effec- tiveness of each remedy was discussed in Win Porter's August 14 memorandum to the Regional Administrators ("Superfund Priorities for Fourth Quarter FY'86"). Attachment B of that memorandum provides "Interim Guidance for Encourag- ing Selection of Treatment/ Destruction Technologies," which should help Regions justify remedies that include treatment technologies. ------- |