Laserfiche WebLink
T <br /> ARCO Products Compar� • '` <br /> Post office Box 612530 <br /> San Jose, California 95161 " <br /> Environmental Remediation <br /> June 26, 1996 <br /> Mr. Michael Infurna <br /> San Joaquin County Public Health Services <br /> Environmental Health Division <br /> P.O. Box 388 <br /> Stockton, CA 95201-0388 <br /> Re: former ARCO #2168, 441 W. Charter Way, Stockton, CA (site code 1056). <br /> Dear Mr. Infurna: <br /> I have received your June 25, 1996 review of Emcon's June 19, 1996 "Work <br /> Plan to conduct an Additional Subsurface Investigation" for the subject site. <br /> appreciate your timely review of the work plan. However, I was disappointed in <br /> the procedural suggestions which you presented in your letter. ARCO Products <br /> Company (ARCO) is not attempting to circumvent the minimum requirements of <br /> California's Corrective Action Requirements of the Underground Storage Tank <br /> Regulations. ARCO simply wants to quickly remediate any existing soil <br /> contamination above a depth of 25 feet from the ground surface at the site. <br /> ARCO has determined that the soil vapor extraction process is the most <br /> economical method available to achieve the intended result. ARCO's short term <br /> intent is to remediate hydrocarbon impacted soil above 25 feet that are solely <br /> attributed to ARCO's activities. Once these soils are remediated, the property <br /> owner will be able to develop their property. <br /> ARCO has performed a number of investigations at the subject site, consisting of <br /> drilling numerous soil borings and analyzing a large number of soil samples. <br /> These investigations have documented that a hydrocarbon impacted "smear' <br /> zone exists beneath the site beginning at a depth of 25 feet. This "smear' zone <br /> exists both upgradient and downgradient of any ARCO source areas. Upgradient <br /> sources consist of Texaco, Chevron, and the transmission shop. Groundwater <br /> has been impacted by releases from these three sources as well as from the <br /> ARCO facility and some other sources in the nearby area. <br /> The groundwater plume is being addressed as a separate issue by a coalition <br /> consisting of the County Environmental Health Division (County) and the <br /> responsible parties (RPs). ARCO is actively participating with the County in <br /> addressing the groundwater issue. This coalition met on April 30, 1996 where <br /> ARCO informed the coalition that soil vapor extraction would be implemented to <br /> abate the source areas consisting predominantly of vertical soil contamination <br /> from the tank pit and dispenser areas. <br /> ARCO Pmducfs Company is a Division of A,IantioRcMieltlCompon, <br />