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i Johne PLjMm;n s & Assoc' <br /> ateS <br /> Ph.(510)505-0722 r: r^ r <br /> Fax (510) 791-3308 J �� (�a �' P.O. Box 2847 <br /> Fremont, CA 94538.2847 <br /> File No 0396012.01 Certified Mail Z 386 907 886 <br /> September 8, 1997 <br /> Bruce Askanas, Sr. REHS <br /> Site Mitigation Unit <br /> Environmental Health Division <br /> San Joaquin County, Public Health Services <br /> 304 E. Weber Ave. Third Floor <br /> Stockton, CA 95202 <br /> RE for 7777 East 11th Street <br /> Tracy CA, aka PIEDMONT LUMBER, Site Code 506243 <br /> Dear Mr. Askanas <br /> In order to consolidate all the changes for the work on the <br /> subject site, John P. Cummings and Associates (JPCA) sends this <br /> newly revised workplan with the changes requested by your office <br /> including the analysis of certain oxygenates as now required by <br /> the Central Region Water Quality Control Hoard (CVRWQB) . The <br /> revised workplan is being submitted for your approval. <br /> SOOPS OF VCM ( I <br /> 1) Prepare a site health and safety plan. Appendix A. Contact <br /> U S Alert to check on placement of underground utilities. JPCA <br /> shall request that the present owner/tenant identify any on-site <br /> utilities that they are aware of on the property. Obtain a <br /> permit from San Joaquin County Environmental Health Division <br /> (SJCEHD) to drill three borings which will be converted into <br /> wells. <br /> 2) Notify the San Joaquin County Environmental Health Division <br /> �_(6JCZHD) 48 hours prior to initiation of field work. <br /> ` 3) Advances� three boring :+-o an approximate depth of ten feet <br /> ry� into the satt�.rated-zone, estimated to be a pproximately 20 feet, <br /> using a C-57 licensed driller and 8-inch diameter hollow-stem <br /> ��e-�a �ugers at the approximate locations as shown in Figure 2. <br /> Z Construct three monitoring wells with 2" diameter casing with the <br /> bottom 15 feet of the well constructed of 0.01M1 slotted casing. <br /> 1 <br />