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r <br /> 3164Gold Camp Drive <br /> ��. Delta Site 200 t <br /> Rancho Cordova,California 9567 6021 <br /> Environmental 916/638-2085 <br /> Consultants,Inc. FAX:916/638-8385 V- <br /> April 30, 2002 <br /> cr <br /> Mr. Dennis Catanyag <br /> San Joaquin County Public Health Services <br /> Environmental Health Division <br /> 304 East Weber Street, Third Floor <br /> Stockton, California 95202 <br /> Subject: Soil Sampling Report <br /> ARCO Facility No. 6100 <br /> 25775 Patterson Pass Road <br /> Tracy, California <br /> Delta Project No. D000-340 <br /> Dear Mr. Catanyag: <br /> Delta Environmental Consultants, Inc. (Delta) was contracted by Atlantic Richfield Company <br /> (ARCO) to perform soil sampling beneath former dispenser locations and associated product <br /> piping during renovation activities at ARCO Facility No. 6100, located at 25775 Patterson Pass <br /> Road, Tracy, California(Figure 1). The purpose of the soil sampling was to fulfill requirements <br /> of the San Joaquin County Public Health Services, Environmental Health Division(PHS/EHD). <br /> This report presents the analytical results from the soil sampling activities. <br /> Soil Sampling <br /> On January 18, 2002, a Delta representative, working under the direction of a California <br /> Registered Geologist, visited the site to collect soil samples from beneath the former dispenser <br /> and product piping locations. Delta collected soil samples in the presence of Environmental <br /> Health Specialist, Dennis Catanyag. Sampling locations and facility configuration are shown <br /> on Figure 2. Eight samples were collected from beneath product dispensers, and three samples <br /> were collected from beneath product piping. Samples were collected at depths ranging from <br /> approximately 3.5 to 6 feet below ground surface (bgs). Each sample location was exposed <br /> using a backhoe. Samples were collected by hand driving a brass sampling tube into the soil at <br /> the bottom of the excavated area. The ends of each brass tube were then covered with Teflon"m <br /> sheets and plastic caps, and samples were placed in an ice-chilled cooler. Each sample was <br /> labeled with the ARCO station number, sample name, collection date, and collection time, and <br /> identified on a chain-of-custody form. Two stockpiles of pea gravel (SP-1 and SP-2) generated <br /> during construction were also sampled on January 18, 2002. <br /> Delta returned to the site on January 22, 2002, to sample two stockpiles of soil generated during <br /> construction activities. This soil was from the trenching for the installation of remediation <br /> Providing a Competitive Edge <br />