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Record of Decision System (RODS)



Address:  521 NORTH ROSEMARY 
City & State:  LANSING  MI  48917
County:  INGHAM
EPA ID:  MID006522791
EPA Region:  05
NPL Status:  Currently on the Final NPL
ROD Type:  Record of Decision
ROD ID:  EPA/ROD/R05-93/230
ROD Date:  09/29/1993
Operable Unit(s):  01
Media:  Debris, Soil
Contaminant:  VOCs, Other Organics, Metals
Abstract:  The 1-acre Adams Plating site is an active electroplating operation in Lansing Township, Ingham County, Michigan. Land use in the area is mixed commercial, industrial, and residential. The estimated 1,800 residents per square mile around the site receive their water from the municipal system which serves Lansing, and no private wells exist in the area of the site. Before 1965, the Adams Plating Company (APC) building was occupied by a dry cleaning establishment, which stored solvents in a 500-gallon underground storage tank at the site. APC removed this tank in the 1950s because of leakage. In 1965, APC purchased the site and primarily has been involved in chrome, nickel, copper, tin, and brass electroplating and anodizing. This process includes degreasing and removing dirt from metal using solvents and acids, and rinsing off the film after electroplating. Prior to 1971, wastewater from the electroplating process was discharged to an underground clay tile drain system. In this process, wastewater was discharged near a partially buried drum, referred to as the "green water" drum, then flowed through a clay tile drain into the municipal sewer system. In 1971, APC was connected directly to the municipal sewer system. Prior to 1980, APC was cited several times for violations of city codes regulating discharge of untreated waste to the municipal sewer and, as a result, began pretreatment of onsite wastewater. The wastewater was stored onsite in a partially buried metal dipping tank, and pumped through an onsite pretreatment system prior to discharge to the municipal sewer system. This 800-gallon tank was removed at an unknown date because of leakage. Wastewater is now held in two 1,000-gallon holding tanks at the southwest corner of the APC building. In 1980, the owner of an adjacent property received "green water" in his basement as a result of a broken clay pipe. The State investigated the site and documented that wastewater and plating waste had migrated from the former tile drain, contaminating the site. In 1981, at the State's suggestion, APC pumped wastewater from the basement and later installed a subsurface collection drain system to reduce the concentration and volume of contamination reaching the adjacent house. In 1984, EPA inspected the site and found contamination of soil by metals, VOCs, and PAHs originating from site electroplating activities, by past fuel or coal storage and disposal, and possibly from the former dry cleaner. This ROD addresses the onsite contaminated soil and debris as the first and final action for the site. Ground water was not evaluated as a drinking water source because ground water at the site was not found in useable quantities for drinkingwater purposes and all residents and businesses in the neighborhood are connected to municipal water. The primary contaminants of concern affecting the soil and debris are VOCs, including TCE and toluene; other organics, including PAHs; and metals, including arsenic and chromium. SELECTED REMEDIAL ACTION: The selected remedial action for this site includes constructing a temporary fence around the site and demolishing onsite buildings as needed; excavating approximately 4,700 yd[3] of contaminated soil from around the buildings to a depth of 10 feet; testing the soil using TCLP for metals; pretreating the soil offsite by fixation and/or stabilization, if necessary, to a level below LDR requirements; disposing of excavated and any pre-treated soil offsite in a RCRA landfill; removing onsite subsurface debris, including clay tiles, PVC pipe, collection systems, and underground storage tanks, followed by offsite disposal of these materials in a RCRA landfill; backfilling excavated portions of the site with clean soil and reseeding; installing vertical barrier walls around the buildings to isolate the residual low-level contamination under the buildings; collecting, treating, and disposing of approximately 10,000 gallons of water collected during excavation offsite; monitoring ground water and air, if necessary; and implementing institutional controls, including deed and land use restrictions. The estimated present worth cost for this remedial action is $1,800,000, which includes an estimated annual O&M cost of $34,400 for 30 years. PERFORMANCE STANDARDS OR GOALS: Chemical-specific soil and debris cleanup goals are based on background levels, and include chromium 26.1 mg/kg and arsenic 6.7 mg/kg. Soil will be excavated to a maximum depth of 10 feet because the Risk Assessment assumed a maximum construction depth of current/future buildings to 10 feet. Final soil remedial concentrations will attain a site-specific healthbased risk of 10[-6] carcinogenic risk or an HI of 1 or less. INSTITUTIONAL CONTROLS: Deed and land use restrictions will be implemented to prevent digging and installation of water wells and direct exposure to contaminated soil.
Remedy:  The selected remedy is the final remedy for the site. The remedy addresses the threats posed by contaminated soils at the site.

The major components of the selected remedy include:
. Excavation of contaminated soils and off-site disposal in a Michigan Act 641/RCRA Subtitle D landfill.
. Collection and treatment of water from excavation/dewatering activities.
. Replacement of the excavated soil with clean fill and installation of vertical barriers to reduce the potential for recontamination of clean fill.
. Land use restrictions including deed restrictions on installation of wells and excavation of contaminated soils if necessary.
. Groundwater monitoring to evaluate the effectiveness of the soil remediation and to monitor for continuing sources.
Text:  View full-text ROD [ 74K ]
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