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Report—Remedial Action Feasibility Page 10 <br /> Cutter Lumber—Western Lift Site <br /> GrPE Project No 102 3 <br /> August 1,2003 <br /> 4.2 Air Sample Collection <br /> Air samples from the vapor extraction system were collected for laboratory analysis at the <br /> beginning of the operation and at several points during the course of the operation In <br /> addition, PID/OVM measurements were taken at least one each day The air samples for <br /> laboratory analysis were collected in 1-liter Tedlar bags attached to Tygon tubing, which <br />' was, in-turn attached to a brass sampling port on the VES system The bag was then <br /> attached to a hand stroked air pump and a sample collected PID/OVM readings were <br /> made from the air contained in separate bags from those intended for laboratory analysis <br />' Tedlar bags containing samples intended for laboratory analysis bag placed in a cool <br /> environment for immediate transport to the analytical laboratory A chain of custody <br /> document, listing all samples collected and their intended analyses, accompanied the <br /> samples from field to the laboratory, thereby providing a means to track their movement <br /> and insure their integrity <br /> 4.3 Soil Sample Analysis <br /> Selected soil samples from ASW-1 and VEW-1 were shipped to Sherwood Labs of <br /> Hilmar CA for laboratory analysis as follows <br /> • Total Petroleum Hydrocarbons as Gasoline (TPH-Gasoline) by EPA method 8015m, <br /> • Benzene, Toluene, Ethylbenzene, and Total Xylenes (BTEX) by abbreviated EPA <br /> 8020, and <br /> The detection limits for those compounds are as follows <br /> Compound TPH-G TEPH-D Benzene Toluene Eth t Benzene Wen <br /> Detection Limit 1 0 50 3 0 30 30 3 0 <br /> Units I mg/kg mg/kg pg/kg µg/kg µg/kg µg/kg <br /> The laboratory data sheets showing the analytical results are attached in Appendix A-1 <br /> 1 <br /> I <br /> 44 Air Sample Analysis <br /> The air samples collected to monitor the vapor extraction pilot test were submitted to <br /> Geo-Analytical Laboratories, of Modesto, CA, a state certified analytical lab <br /> (DHS#1157) The air samples were analyzed as follows <br /> • Total Petroleum Hydrocarbons as Gasoline (TPH-G) by EPA method 5030, and <br /> • Benzene, Toluene, Ethylbenzene, and Total Xylenes (BTEX) by EPA 8021B <br /> The detection limits for those compounds are as follows <br /> 2937 Veneman Ave,#B240 Geo-Phase Environmental Inc Phone(209) 569-0293 <br /> Modesto, CA 95356 Fax(209)569-0295 <br /> I <br />