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PUBLIC PfEALTHSERVttlS OP,QUI/y <br /> SAN JOAQUIN COUNTY <br /> ENVIRONMENTAL HEALTH DIVISION t <br /> Karen Furst, M.D., M.P.H., Health Officer `, P <br /> 304 East Weber Avenue, Third Floor • Stockton, CA 9520 �� <br /> 209/468-3420 <br /> AM 12 M <br /> Piedmont Lumber&Mill Company <br /> 395 Taylor Blvd. Suite 225 <br /> Pleasant Hill CA 94523 <br /> RE: Piedmont Lumber&M111 Company Site Code: 506243 <br /> 7777 W. Eleventh Street <br /> Tracy CA 95376 <br /> As a result of reviewing the preliminary site assessment workplan submitted by John P. Cummings & <br /> Associates dated August, 12 1997 and historical site specific data which confirms the existence of <br /> petroleum products in the subsurface environment at the above referenced site, San Joaquin County Public <br /> Health Services Environmental Health Division (PHS/EHD) provides the following comments and <br /> directives: <br /> 1. The proposed location of the monitoring well east of the former tank area should be mid-way between <br /> the former tank location and the drinking water well. <br /> 2. Number 4 of the workplan indicates that you will be taking "approximately 6" soil samples. Soil <br /> samples should be collected at five foot intervals until a PID field monitor and field observations <br /> indicate that the vertical extent of the contamination has been defined. <br /> 3. Soil samples from the capillary fringe and below should be analyzed for ether and alcohol using EPA <br /> method 8260 (Specifically Methanol, Ethanol, Tertiary Butanol (TB), MTBE, Di-isopropyl ether <br /> (RIPE), and Tertiary Amyl Methyl Ether (TAME)). Results of these analyses must be reported at <br /> method detection limits in order to confirm the presence or absence of these petroleum additives. <br /> Once field activities are completed and prior to submittal of the soil samples to the laboratory, PHS/EHD <br /> must be contacted in order to discuss which soil samples will undergo analysis.The summary report should <br /> include a table of all soil and ground water sample results obtained from the site and any recommendations <br /> for further investigation and/or remediation. <br /> Should you have questions regarding this correspondence please contact Bruce Askanas at(209)468-0331. <br /> Donna Heran,REHS,Director <br /> Environmental Health Division <br /> Bruce Askanas, Sr.REHS Mazgare agorio,Supervisor <br /> Site Mitigation Unit Site Mitigation Unit <br /> cc: John P. Cummings & .Associates <br /> A Division of San Joaquin County Health Care Services <br />