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Record of Decision System (RODS)



Address:  1285 E BARD RD 
City & State:  DALTON TOWNSHIP  MI  49445
EPA ID:  MID980504716
EPA Region:  05
NPL Status:  Currently on the Final NPL
ROD Type:  Record of Decision
ROD ID:  EPA/ROD/R05-93/233
ROD Date:  09/07/1993
Operable Unit(s):  01
Media:  Soil, Debris, GW
Contaminant:  VOC, Other Organics, Inorganics
Abstract:  The 4-acre Duell & Gardner Landfill site is an inactive landfill located in Dalton Township, Muskegon County, Michigan. Land use in the area is mixed residential, agricultural, and commercial with adjacent woodlands. Two residences and an agricultural field are located on the northern half of the property, and the landfill is located on the southern half of the property. Approximately 140 people live within a one mile radius of the site. Much of the precipitation percolates down through the highly permeable soil at the site, and local surface water drains toward a tributary to either Bear Creek or to an agricultural drainage ditch. Drinking water is derived from wells or from Lake Michigan; and two residential drinking water wells are located onsite. From the mid 1940s to 1969, the landfill was used for the disposal of industrial and municipal wastes in trenches, depressions, and on the surface of the site. In 1969, the Gardners and the Duells purchased the landfill and operated it as a solid waste disposal facility until 1973. During this period, waste was placed in unlined trenches excavated at the site. In 1973, a County investigation noted that liquid waste was being disposed of in the landfill, and the State ordered the landfill closed. A subsequent State investigation, in 1979, detected soil contamination by PCBs. As a result, EPA conducted surface water sampling in 1981, and installed four monitoring wells in 1982, from which no significant concentrations of organics or inorganics were detected. In 1985, the State identified 21 distinct drum and waste areas at the site containing 550 drums in various stages of deterioration scattered in the woods adjacent to the landfill. Additionally, hundreds of small laboratory bottles, debris, and piles of unidentified sludge-like material were scattered around the base of the landfill. These wastes appear to have contaminated soil and ground water under the site. In 1986, EPA conducted a removal action for the drums, some of the laboratory bottles, the sludge-like material, and some soil from the site. This ROD addresses the final remedy for contaminated soil, debris, and ground water at this site. The primary contaminants of concern affecting the soil, debris, and ground water are VOCs, including PCE; other organics, including PCBs and pesticides; and inorganics. SELECTED REMEDIAL ACTION: The selected remedial action for this site includesexcavating and treating 1,800 yd[3] of contaminated soil onsite using low- temperature thermal desorption to remove organics; replacing the treated soil anddebris onsite into the excavated areas and installing a clay cap on the landfill area; extracting and treating contaminated ground water onsite using carbon adsorption, with discharge of the treated water onsite through a seepage system; treating or disposing of the spent carbon offsite; monitoring ground water to assess the state of the remediation and assure containment of the contaminant plumes; performing a pre-design investigation to define further the limits of the contamination; and implementing institutional controls including deed restrictions. The estimated present worth cost for this remedial action is $5,902,000, which includes an estimated annual O&M cost of $317,000 for years 1-10 and $98,000 for years 11-20. PERFORMANCE STANDARDS OR GOALS: Chemical-specific soil cleanup goals are based upon State and Federal standards, and include aniline 120 ug/kg; Aroclor 1242 (PCB) 1,000 ug/kg; benzo(k)fluoranthene 330 ug/kg; indeno(1,2,3 -cd)pyrene 330 ug/kg; and benzo(a)anthracene 330 ug/kg; bis (2-ethylhexyl) chrysene 330 ug/kg; crystal violet 6 ug/kg; N,N-Dimethylaniline 200 ug/kg; PCP 6 ug/kg; phthalate 40 ug/kg; 4,4-DDD 2 ug/kg; 4,4-DDE 2 ug/kg; 4,4-DDT 2 ug/kg. Chemical-specific ground water cleanup goals are based on SDWA MCLs and State standards, and include aniline 6 ug/l; carbon tetrachloride 1 ug/l; chloroform 6 ug/l; gentian violet 0.3 ug/l; N,N-Dimethylaniline 10 ug/l; and PCE 1 ug/l. INSTITUTIONAL CONTROLS: Deed restrictions may be implemented to prevent installation of drinking water wells in the affected area of the site during remediation; and land use restrictions may be imposed on the landfill area.
Remedy:  This final remedy addresses contaminated groundwater and contaminated soil associated with the Duell-Gardner site. The major components of the selected remedy include the following:
* Extraction of groundwater to capture and halt the flow of the contaminated groundwater plume.
* Removal of contaminants from the groundwater by carbon adsorption treatment.
* Excavation of contaminated soil and subsequent treatment by low temperature thermal treatment.
* Construction of a clay cap to properly cover the old landfill area.
* Groundwater monitoring to assess the state of remediation.
Text:  View full-text ROD [ 41K ]
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