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July 9 1998 <br /> � , <br /> Page 2 <br /> • Groundwater Analysis. After well development, water samples <br /> will be collected from the wells and submitted (along with the <br /> discrete sample collected from the GeoprobeO boring) to a <br /> California State-certified laboratory for analysis Groundwater <br /> samples will be analyzed for the presence of TPH-g,BTEX, <br /> methanol, and ethanol by EPA Methods 8015 modified and 8020 <br /> Fuel oxygenates will be analyzed using EPA Method 8260 <br /> If there are any questions regarding these changes to the original Work Plan, please call <br /> us at (916) 858-2350 <br /> Sincerely, <br /> Pacific Environmental Group, Inc. <br /> r <br /> Michael E Mitchener <br /> Project Geologist <br /> Christine W Brown - <br /> Senior Geologist <br /> RG 4556 <br /> Attachments Attachment A - SJCPHS-EHD Letter Dated July 2, 1998 <br /> cc Mr Mike Infurna, San Joaquin County Public Health Services Department <br /> ,Mr Mark List, Regional Water Quality Control Board—Central Valley Region <br /> 911-005 iB/WPLAN <br />