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Record of Decision System (RODS)



Address:  CITY HALL 202 W 5TH ST 
City & State:  CLARE  MI  48617
County:  CLARE
EPA ID:  MID980002273
EPA Region:  05
NPL Status:  Currently on the Final NPL
ROD Type:  Amendment
ROD ID:  EPA/541/R-97/067
ROD Date:  05/15/1997
Operable Unit(s):  02
Media:  Groundwater,soil.
Contaminant:  Benzene, vinyl chloride, trichloroethane, tetrachloroethene, methylene chloride, trans 1,2-dichloroethene; cis 1,2-dichloroethene, total xylenes, toluene, ethylbenzene, 1,1-dichloroethane, 1,2-dichloroethane, 1,1,2-trichloroethane, 1,1,1-trichloroethane, styrene.
Abstract:  The Clare Water Supply site is located in the City of Clare, Michigan. The site is bounded to the north by U.S. Highway 10; to the west by the Mitchell Property; to the east by Maple Street; and from south to north by railroad lines as well as the Little Tobacco Drainage Ditch. Approximately 3,300 people reside in the City.The site withdraws groundwater from four municipal wells in the area. Two of the wells have been shown to be contaminated. The contaminants in these wells consist primarily of chlorinated hydrocarbons. The remaining two wells are not contaminated. Groundwater at the site has been found to be the only feasible source of drinking water for the community.In 1985, potentially responsible parties signed an agreement to perform an investigation at the site. That investigation began in the fall of 1988. Interim actions were provided for wellhead treatment of the water supply until the investigation was completed. Thus, air stripping of the City water supply began in early 1991. A remedy was completed for the site in the fall of 1992.
Remedy:  It was determined that in-situ soil vapor extraction (ISVE) was not a feasible remedy for cleanup of contaminated soils at the site. Therefore, the remedy has been amended. The major components of the new remedy include installation of a perimeter slurry cut-off wall; groundwater dewatering and treatment; excavation and consolidation of soils; shallow soil ISVE; construction of multi-media cap; and groundwater monitoring.
Text:  View full-text ROD [ 32K ]
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