Laserfiche WebLink
T��t V5 <br /> 5 <br /> ENVIRONMENTAL iNC 3330 Cameron Park Drive Ste 550 <br /> Cameron Park Califnia 95682 <br /> (530)676-6004--Fax (53 -676-6005 <br /> cry _ <br /> wr\ � <br /> v! <br /> July 1, 20Q3 <br /> Project No U6100-17-20 <br /> Mr Nuel Henderson, Jr <br /> San Joaquin County Public Health Services <br /> Environmental Health Division- <br /> 304 East Weber Street, Third Floor <br /> Stockton, California 95202 <br /> Subject Remedial Action Plan <br /> ARCO Facility No 6100 <br /> 25775 Patterson Pass Road <br /> Tracy, California <br /> Dear Mr Henderson <br /> Stratus Environmental, Inc (Stratus), on behalf of Atlantic Richfield Company (ARCO), <br /> is submitting this remedial action plan (RAP) for ARCO Facility No 6100, located at <br /> 25775 Patterson Pass Road, Tracy, California (Figure 1) <br /> Soil and perched groundwater beneath the site are impacted with petroleum <br /> hydrocarbons The petroleum hydrocarbon impact to soil is predominantly onsite in the <br /> vicinity of the underground storage tank (UST) complex and dispenser islands This <br /> RAP was prepared to identify and screen various remedial alternatives capable of <br /> mitigating the petroleum hydrocarbon impact to the subsurface, and to propose a site <br /> specific alternative based on effectiveness, implementabihty, and cost The local <br /> geology, hydrogeology, and the extent of petroleum hydrocarbon impact were taken into <br /> consideration while selecting the recommended remedial alternative Results of a <br /> sensitive receptor survey and previous feasibility studies performed at the site are also <br /> summarized <br /> Stratus recommends the use of soil vapor extraction (SVE) and air bubbling (AB) to <br /> mitigate petroleum hydrocarbon impact to the subsurface <br /> SITE DESCRIPTION <br /> The subject site is currently an active gas station, located approximately 5 miles <br /> southwest of Tracy, California Aboveground facilities consist of a station building <br /> containing a mini-mart, two dispenser islands, and a restroom building (Figure 2) <br /> Originally, one 550-gallon waste oil UST, one 10,000-gallon gasoline UST, and four <br /> 6,000-gallon gasoline USTs were present at the site The waste oil tank was removed in <br /> 1987, and the five gasoline USTs were removed in November 1990 Four new 10,000 <br /> 1} gallon USTs were installed in a separate UST cavity adjacent to the former UST <br /> P\BP-Arco for URS161001Reports\Arco 6100 RAP doc <br />