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" Quik Stop Station No.076%W) November 2,2001 <br /> Stockton California Work Plan for Soil and Groundwater Investigation <br /> Task 3 Select a minimum of three representative soil samples per soil boring for <br /> analysis. The selected samples shall include the two lowermost samples and the <br /> sample with the highest PID field reading, if applicable. Collect four <br /> representative soil samples from the stockpile for disposal characterization. <br /> Submit the soil samples and the hydropunch groundwater sample, under chain- <br /> of-custody (COC) documentation, to a state-certified analytical laboratory. <br /> Task 4 Analyze selected soil samples and the groundwater sample for: total petroleum <br /> hydrocarbons (TPHg); the volatile aromatic compounds benzene, toluene, <br /> ethylbenzene, and xylenes (BTEX).; the five fuel oxygenates methyl tert-butyl <br /> ether (MTBE), diisopropyl ether (DIPE), ethyl-tert-butyl ether (ETBE), tert- <br /> amyl methyl ether (TAME), tert-butanol (TBA), ethanol by Environmental <br /> Protection Agency (EPA) Method 8260B. Composite four stockpile samples <br /> into one sample and analyze for TPHg, BTEX and MTBE by EPA Method <br /> 8020; and total lead by EPA Method 6010. <br /> Task 5 Prepare a site investigation report which documents field methods, <br /> hydrogeological site characteristics, analytical methods and results, and <br /> evaluations of site environmental conditions. <br /> DISTRIBUTION <br /> Horizon recommends copies of this work plan be forwarded to: <br /> Ms. Rebecca Setliff Mr. Marty Hartzell <br /> San Joaquin County California Regional Water Quality Control Board <br /> Environmental Health Department Central Valley Region <br /> 304 East Weber, Third Floor 3443 Routier Road, Suite A <br /> Stockton, California 95202 Sacramento, California 95827-3003 <br /> 7076wp 1 1-01.doc <br /> Project No.7076.12 5 HORIZON ENVIRONMENTAL INC. <br />