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Mr Michael J lnfuma Jr —San Joaqun County Public Health Services—Environmental Health Division <br /> October 31 2001 <br /> Page 2 <br /> • Based'on the results of the DPE Test and the November 2001 groundwater monitoring and <br /> sampling event, GR will make recommendations for`further work during the first quarter of 2002 <br /> Also, at you"request, all future reports and correspondence will be copied to Mr Marty Hartzell <br /> of the Regional Water Quality Control Board, Central Valley Region Copies of reports and <br /> correspondence for this site dating back to March 14, 2001 will be submitted with Mr Hartzell's <br /> copy of this letter <br /> In addition, a Sensitive-Receptor Survey (SRS) has been completed for the site The SRS and the <br /> results are descnbed in detail in Section 5 of GR's Subsurface Investigation Report, dated June 8, <br /> 2001 <br /> The following is a schedule of proposed activities and deadlines <br /> • November 2001 -Conduct monitoring and sampling of all existing Tosco/BP Wells <br /> • December 2001 -Conduct DPE Test <br /> • January 31, 2002 -Submit reports documenting well sampling and DPE Test <br /> • March 15, 2002 -Submit Corrective Action Plan (CAP), CAP submittal to <br /> include proposal for additional delineation, if warranted <br /> Should you require further information about the proposed work, please do not hesitate to call me <br /> at (925) 551-7555 <br /> ��RED GE <br /> Sincerely, ��S G1AS J <br /> Gettler-Ryan Inc. ���Ov e. <br /> �© 682 ' <br /> Dougl s J ee ��9 <br /> Project Ma ager, R G No 6882 <br /> SOF CA <br /> Enclosures Table l —Groundwater Monitoring and Chemical Analytical Data <br /> Table 2—Groundwater Chemical Analytical Data <br /> Figure 1 —Vicinity Map <br /> Figure 2—Potentiometric Map—August 16, 2001 <br /> Figure 3—Concentration Map—August 16, 2001 <br /> GR Field Methods and Procedures <br /> Field Data Sheet—MW-1 l <br /> Laboratory Analytical Report and Chain of Custody Document <br /> cc Mr Ed Ralston, Tosca Corporation <br /> Mr Marty Hartzell, RWQCB, Central Valley Region (w/additional enclosures) <br /> 14024506 2 <br />