Laserfiche WebLink
1,2,4-trimethylbenzene <br />1,3,5-trimethylbenzene <br />xylenes <br />Of the above organic CDCs, PCE and TCE exceed Indiana Voluntary Cleanup Program <br />(VRP) Nonresidential Land Use Cleanup Goals. COC concentrations were compared with <br />Residential Cleanup Goals in recognition of the potential for contaminated groundwater <br />to migrate off-site and eventually beneath residential properties. PCE, TCE, n- <br />propylbenzene, 1,2,4-trimethylbenzene and 1,3,5-trimethylbenzene exceed Residential <br />Cleanup Goals in at least one groundwater monitoring well_In the"case of n- <br />propylbenzene, 1,2,4-trimethylbenzene and 1,3,5=trimethylbenzene;, Cleanup Goals were <br />derived using equations in the VRP Resource Guide Attachment F.'(fuly,1996). <br />Investigations by APT and Hull determined the presence ofone or more source' areas for <br />PCE (and potentially TCE) beneath buildings near'the southwest,quadrant of 1.the former <br />stamping plant property, where solvents were apparently'stored aril used for parts <br />degreasing during the period of operation by Studebaker Corporationand Allied Products <br />Corporation. The source areas appear to be persistent; and may contain dense nonaqueous <br />phase liquids (DNAPL). The source areas are also contributing dissolved volatile organic <br />compounds (VOCs) to a plume that moves in the direction of groundwater flow (toward <br />the northwest) and extends beyond the Site's northern boundaiwThe City will be <br />utilizing a Brownfield Site Assessment"grant frond the Indiana Development Finance <br />Authority to further define the nature and delineate the -dimensions of the source areas. <br />Based on a preliminary risk -assessment conducted as:partof an initial Phase II <br />Environmental Site Assessment; potential human exposures include ingestion and/or <br />dermal contact with watef&rived from wells and inhalation of COCs volatilizing from <br />groundwat'er.`into�,indoor air. Of particular_concern are the chlorinated compounds PCE <br />and TCE; which are:widely distributed across the Site and migrate off-site in the <br />direction of adjacent residential properties. These compounds have the potential to <br />.biodegrade into vinyl 'chloride; which is in general more toxic than the.mother <br />compounds. <br />Human health effects associate, dpWith exposure to PCE and TCE include: <br />Central nervous„system disorders, including dizziness, headache, <br />vertigo, arid, confusion <br />• liver and kidney cancers and leukemia <br />• Developmental; effects of fetuses <br />• Liver and kidney damage <br />• Birth defects <br />• Cardiac abnormalities in children <br />• Tumors in the lung, liver and testes <br />-5- <br />