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I ---�___ 27141 Aliso Creek Road n _.. Suite 270 ��. Delta .. _ j Aliso Viejo, California 92656-5305 Environmental FEB 949/362-'3077 Consultants,Inc. ono FAX: 949/362-0290 January 28, 2000 Mr_ Mike Kith,R.E.H.S. Senior Registered Environmental Health Specialist „ San Joaquin County Public Health Services Environmental Health Division 304 E:Weber Avenue,Third Floor J J L 2 7 2001 Post Office Box 388 Stockton, California 95202-0388 Subject: Dispenser Soil Sampling Report ARCO Facility No, 5450 1617 West Fremont Street Stockton, California Delta Project No.L099-705 Dear Mr. Kith: Delta Environmental Consultants, Inc. (Delta):was contracted by ARCO Products Company (ARCO) to perform soil sampling of former dispenser locations during dispenser island replacement activities at ARCO Facility No. 5450 (the Site; see Figure 1), located at 1617 West Fremont Street_in Stockton, California. The purpose of the soil sampling'was to fulfill requirements of the San Joaquin County Public Health Services. This letter report presents the data collected during the former dispenser sampling. Soil Sam lin' i working under the direction of a California Registered On November 24, 1999,a Delta representative, g , Geologist, visited the Site to collect soil samples from beneath eight former dispenser locations and associated former product piping. Delta collected soil samples beneath the former dispensers and product piping under the direction of Inspector Mike Kith. Eight dispenser samples were collected and identified as DP14.0 through DP54.0,DP6-5.0,DP74.5,and DP84.5 (Figure 1). The samples were collected at a depth of approximately 4.0 to 5.0 feet below the former dispenser locations. Ten soil + samples were collected beneath former product pipelines and identified as PLl-5, PL2-3.5, PL3-3.5, PL4-4.0,PLS-4.0, PL6-5.0, PL7-4.5, PL8-5.0, PL9-5.5, and PL10-5.0 (Figure 1). The"samples were soil collected at a depth of approximately 3.5 to 5.5 feet beneath the former pipeline locations. Each sample location was exposed with a hand auger and each sample was collected using a slide hammer to drive a brass sampling tube into the soil. The ends of each brass tube were then covered using Teflod"I sheets and plastic caps. Each sample was sealed, labeled with the ARCO station number, sample name,collection date, and collection time. Each sample was identified on the standard ARCO chain of custody. To avoid cross contamination between samples, all sampling equipment was washed with an Providing a Competitive Edge