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Project No. 58080-06-02 September 30, 1994 Page 6 The development and purge water will be retained onsite in 55-gallon drums pending the results of the laboratory analyses and subsequent disposal by the client following regulatory protocol. The groundwater samples will be submitted to a state of California certified analytical laboratory for des of TPH as gasoline and diesel following EFA Test Method 8015;Modified,BTEX and MTBE fallowing EPA Test Method 8020, and halogenated volatile organics fallowing EPA Test Method 601. Provide qw ter control/quality assurance (OA/QC) procedures during the field` activities. These procedures would include cleansing//rinsing the sampling equipment` prior to each sampling effort,and providing chain-of-custody documentation for each., sample collected and transferred to the laboratory for analytical testing, ,TA& 'VII- Yragfi=Filet 'Test Notify the$an Joaquin Valley Unified Air Pollution Control Ilisttrrict in writing five calendar days itt advance of the vapor extraction test {VE;T}. • Mobilize to;the site a transportable vapor extraction pilot test system and operator as describect_in the attached VET Specifications,Appendix A. Collect pre-test data as specified in the attached N%T S,p cations.. Configure VET equipment as specified in the VET Spec frcations. Perform VET and data collection as specified in the VET`S tions. Ikk V - Problem AUessment Rem • Prepare a Problem Assessment Report(PAR)in accordance with Appendix A ref the. Tri-Regional GuicEelines:summarizing the results of the;environmentsi engi6 g. services. Ynclud+ed iia the report would be a scaled site-plan depicting the measured Ideations of the bearings and wells at the site, the results of analytical. laboratory tes� tht9l of the quality assurance/quality control measures, logs of the 1tholagy encountered within the exploratory borings, a vapor extraction test summary andit discussion of remedial options.