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r <br /> Ms. Lori Duncan <br /> Page 2 <br /> The samples will be submitted 'lo a State-certified laboratory for analysis of total petroleum <br /> hydrocarbons as gasoline usingTEPA method 8015; total oil and grease using method 418.1''or <br /> 5520; benzene, toluene, ethylbenzene, xylenes using EPA method 8020; and volatile organic <br /> compounds including gasoline oxygenate additives using EPA method 8260. <br /> y <br /> All sampling and drilling equipment will be washed thoroughly with laboratory-grade detergent <br /> and water between uses to minimize the potential for cross contamination. Wastewater <br /> generated from decontamination activities will be placed into DOT approved containers and ' <br /> stored on site pending waste disposition options. Soil cuttings will likewise be drummed <br /> pending the receipt of analytical results. Upon completion the boring will be backfilled to the <br /> ground surface with neat"cement grout tremmied in place. <br /> All site activities will be.conducted in accordance with the site Health and Safety Plan and <br /> `� ; ��QAIQC plan onfile"with PTIS_/EHD:—`A drtiil ng peimit�application will-Ue submitted following <br /> approval of this workplan. <br /> If you have any questions or comments please cond Zero at your convenience. <br /> t�D. GP <br /> Respectfully, 4V <br /> Grou d ro Analysis nc. a GREGORY P. <br /> STAHL <br /> No. 5023 <br /> Gregory P. Stahl, RG 5023 <br /> tp <br /> CA Certified Hydrogeologist No. 264 I�TF OF CA11E�Q��R <br /> cc: Mr. Ed Niemann; North Stockton Auto Service <br /> Mr_ Marty Hartzell, RWQCB <br /> Karen Collins, Environmental Closures <br /> 7. <br /> nsauto\reportsladdendum.doc <br />