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Rainwater Car Wash • 0 <br /> 420 West Yosemite Avenue, Manteca - 2— 2 March 2001 <br /> • Continue lateral and vertical investigation of groundwater contamination. The investigation <br /> must include installing clustered monitoring wells to identify vertical gradients and monitoring <br /> contaminant trends. <br /> • Complete a 500-foot door-to-door well survey to identify any domestic or irrigation wells near <br /> the site. Sample all wells within 500 feet, along with any operational municipal wells within <br /> 2,000 feet of the site. <br /> • In addition to analyzing all groundwater samples for TPHg and BTEX using EPA Methods <br /> 8015/8021, analyze water samples for fuel oxygenates, ethylene dibromide, 1,2-DCA, methanol, <br /> and ethanol using EPA Method 8260B and report all peaks. <br /> If you have any questions or comments, please call me at (916) 255-3115. <br /> IL <br /> Marty Hartzell <br /> Associate Engineering Geologist <br /> cc: Mr. Phil Elder, Rainwater Car Wash, Manteca <br /> Mr. Mark Owens, SWRCB, UST Cleanup Fund, Sacramento <br /> Mr. Tim Cuellar, Advanced GeoEnvironmental, Stockton <br />