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i <br /> APPENDIX A <br /> FIELD PROCEDURES <br /> Page 2 <br /> using EPA method 6021Purge and Trap A travel blank prepared by the laboratory also was analyzed <br /> for STEX, and TPH. <br /> Pumping equipment was cleaned prior to development/purging of each well with a solution of trisodium <br /> phosphate and distilled water to minimize the potential for cross contamination All water removed <br /> during development and purging operations was stored in sealed, labeled 55-gallon drums <br /> I <br /> I <br /> I <br /> u <br /> `�W <br /> Recycled}aper Er A55UCCWES IR C <br />