ARCHIVED REPORTS XR0007793 - Laserfiche WebLink

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i organics were detected in both samples, and 940 mg/kg diesel was detected in the east sample On December 11, 1990 Oil Equipment Services of San Andreas, California, removed a 2000- gallon underground storage tank (identified as TKI-90 on Figure 1) from the Site The tank historically contained only unleaded gasoline Soil samples collected from beneath the former tank indicated gasoline concentrations in the soil Tetraethyl lead and ethyl dibromide ' were not detected in the soil samples A report dated January 2, 1991 was prepared by Condor summarizing the work ' 1.3 Initial Contamination Assessment The initial contamination assessment was conducted by Condor, during September, 1991 Six soil borings were drilled in the proximity of the former tank locations to evaluate the ' extent of soil contamination Laboratory results indicate that hydrocarbon was detected in each of the soil borings TPH-gasoline and BTEX were detected in soil boring SB3 at 20 feet and 30 feet below ground surface Concentrations of BTEX were also detected in SB2 at 20 ' feet and at 40 feet, and in SB4, SB5, S136 at 45 feet Diesel was detected at 26 mg/kg in SBI at 50 feet In each boring, gray- green stained soil was encountered from approximately 25 feet below grade to the bottom of each boring ' 2.0 PROJECT ORGANIZATIONAL STRUCTURE Project Manager William F McClenney Site Safety Officer Rick Lute Keep Field Team Leader Rick Lute Keep 2.1 PROJECT MANAGER RESPONSIBILITIES Overall management of the technical aspects of the project and the work plan ' 2.2 SITE SAFETY OFFICER RESPONSIBILITIES Onsite implementation of the Site Safety Plan Halting or delaying any Site activities when necessary to protect worker or public health and safety, or the protection of the environment Conducting inspections to determine the effectiveness of the Site Safety Plan Any ' deficiencies in the Site Safety Plan identified by the SSO will be corrected as soon as possible Providing a pre-entry briefing according to Section 4 of this plan Inspecting the use of proper personal protective equipment by employees, contractors and subcontractors at all times 2.3 SAMPLING TEAM PERSONNEL RESPONSIBILITIES ' Become familiar with and follow the requirements of this site safety plan and follow instructions given by the SSO Notify the SSO of any injury, signs of symptoms of overexposure to hazardous substances, any unsafe acts or conditions occurring at the Site Collect samples as instructed using proper equipment and safe procedures to minimize exposure to hazardous materials or conditions ' 366-002 -2-