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Project No. 034-17016 <br /> Page No. 7 <br /> o Two (2) soil borings will be completed to a depth of 10 feet bgs as close as practical to <br /> the outside oil/water separator. Soil samples will be collected at depths of five (5) and <br /> 10 feet bgs. One (1) of the soil borings will be deepened to a depth of approximately 20 <br /> to 30 feet bgs and a grab groundwater sample will be collected and analyzed for TPH-cc, <br /> VOCs, CAM 17 metals, and PCBs, and VOCs. Depending on the results of field <br /> screening, a soil sample may be collected from the capillary fringe and analyzed for <br /> TPH-cc,VOCs,CAM 17 metals, and PCBs. <br /> o One (1) soil vapor boring will be completed to a depth of 5.5 feet bgs near the outside <br /> oil/water separator. One(1) soil vapor sample will be collected and analyzed for VOCs. <br /> • The two(2)foot samples in the five(5)foot deep borings and 10 foot samples in the 10 foot deep <br /> borings will be analyzed for TPH-cc, VOCs, CAM 17 metals, and PCBs. The five (5) foot deep <br /> samples will be placed on hold pending receipt of the analytical results of the other samples in <br /> each boring. <br /> 3. TRUCK/TRAILER WASH BAY OIL/WATER SEPARATORS/CLARIFIERS/TRENCH <br /> DRAINS <br /> The investigation within the truck/trailer wash bay/oil water separators/clarifier trench drain will include <br /> the trench drain, subsurface clarifiers located within the truck wash bay and an oil/water separator located <br /> outside of the truck wash bay to the east. The scope of work for the investigation includes the following: <br /> • Seven (7)soil borings will be completed in the truck/trailer wash bay area as follows: <br /> o Two (2) soil borings will be completed to a depth of five (5) feet bgs near the trench <br /> drains. Soil samples will be collected at depths of two(2) and five(5)feet bgs. <br /> o Two (2) soil borings will be completed to a depth of 10 feet bgs, one (1)adjacent to each <br /> of the two (2) interior subsurface clarifiers in the truck bay area. Soil samples will be <br /> collected at depths of five(5)and 10 feet bgs. <br /> o Two (2) soil borings will be completed to a depth of 10 feet bgs as close as practical to <br /> the outside oil/water separator. Soil samples will be collected at depths of five (5) and <br /> 10 feet bgs. One (1) of the soil borings will be deepened to a depth of approximately 20 <br /> to 30 feet bgs and a grab groundwater sample will be collected and analyzed for TPH-cc, <br /> VOCs, CAM 17 metals, and PCBs. Depending on the results of field screening, a soil <br /> sample may be collected from the capillary fringe and analyzed for TPH-cc,VOCs, CAM <br /> 17 metals, and PCBs. <br /> o One (1) soil vapor boring will be completed to a depth of 5.5 feet bgs near the outside <br /> oil/water separator. One(1)soil vapor sample will be collected and analyzed for VOCs. <br /> • The two(2) foot samples in the five(5)foot deep borings and 10 foot samples in the 10 foot deep <br /> borings will be analyzed for TPH-cc, VOCs, CAM 17 metals, and PCBs. The five (5) foot deep <br /> samples will be placed on hold pending receipt of the analytical results of the other samples in <br /> each boring. <br /> REPORTING <br /> After completing the field and laboratory work, a report will be prepared which will include field <br /> methodologies, tabulated analytical results, supporting documentation, data analysis in comparison to <br /> established regulatory screening levels, and our findings, conclusions and recommendations. The report <br /> will be reviewed and signed by a California Professional Geologist. <br /> KRAZAN&ASSOCIATES,INC. <br /> With Offices Serving the Western United States <br /> 034-17016 WP for LSA SSI Lathrop FINAL.doc <br />