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Clavton <br /> Grant Trigger Page <br /> Honigman Miller Schwartz and Cohn Clayton Proposal No. 97SFOEb1R-;31 <br /> October 7, 1997 <br /> of total recoverable petroleum hydrocarbons (TRPH) were detected in subsurface soils, in <br /> areas where surficial staining was apparent. Additional chemical testing for volatile <br /> organic compounds (VOCs), semi-volatile organic compounds (SVOCs), and metals was <br /> also conducted, and no other areas of concern were identified. <br /> PROJECT APPROACH <br /> Clayton proposes a project approach which includes conducting additional soil sampling <br /> at the five locations where elevated TRPH concentrations were found. Add tlanal borings <br /> are proposed adjacent to the oil/water separator and connecting subsurface piping. — <br /> Borings will be completed using truck-mounted GeoprobeO equipment to collect <br /> subsurface soil samples to determine the vertical extent of the releases identified during <br /> previous sampling and also sample below the oil/water separator and piping to determine <br /> if this system leaked and released regulated substances. This proposal includes a cost <br /> estimate to conduct the investigation. <br /> SCOPE OF WORK <br /> In accordance with the project approach summarized above, Clayton proposes to conduct <br /> the following specific tasks: <br /> • Prefield Activities <br /> • Soil Sample Collection <br /> • Laboratory Analysis <br /> • Project Management and Report Preparation <br /> Task 1: Prefield Activities <br /> Clayton will obtain a soil boring permit from the San Joaquin County Environmental <br /> Health Division. <br /> Clayton will prepare a site specific Health and Safety Plan (HASP) for the work <br /> proposed at the site. The HASP will detail the work to be performed, safety precautions, <br /> emergency response procedures, nearest hospital information, and onsite personnel <br /> responsible for managing emergency situations. <br /> At least 48 hours prior to starting sampling activities, Clayton will mark the work area <br /> with white paint and notify Underground Service Alert (USA), as required by law, to <br /> identify underground utilities leading to the subject property. In addition, Clayton will <br /> contract a professional utility locating service to attempt to identify the location of <br /> underground utilities in the vicinity of proposed boring locations. Clayton will not <br /> advance a boring within three feet from a known underground utility. <br /> K. i'-MRTROPOSALIPHASEM97- 31 WPD <br />