SITE INFORMATION AND CORRESPONDENCE FILE 2

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�✓ Somme TOSCO/BP#11192 page 2 1403 Country Club Blvd.,Stockton CA PHS-EHD cautions that by proposing to analyze only"selected soil samples",you may not be obtaining an adequate number of soil samples to support conclusions for lateral or vertical delineation. PHS-EHD will only accept conclusions for vertical delineation that are based on two consecutive soil samples,collected five vertical feet apart,and that are non-detect at acceptable detection limits and QA/QC levels for all constituents noted to have been released at the site. The work plan is approved with the above noted conditions. PHS-EHD well permit applications and fees are past due. Copies of the encroachment permits from the City of Stockton and/or the County Public Works department are also past due. You are to submit one PHS-EHD well permit application and$89 fee per parcel and per each municipal agency encroachment permit. ALL of the past due submittals for this phase of investigation are to be submitted to PHS-EHD by April 13, 4 2001. The field work is to start during April 2001. The report of findings for this phase is to be submitted to --� PHS-EHD within 45 days of the end of the CPT work. The exception to this would be if the monitoring well installations noted in the work plan are to be installed subsequent to the CPT investigation. In that case,the monitoring wells must be installed within 45 days following the completion of the CPT work,and the report of findings is to be submitted to PHS-EHD within 45 days of the end of the monitoring well installation. Because you failed to submit a schedule with the work plan,PHS-EHD is obliged to establish deadlines for . you. Still to be determined is the due date for the Problem Assessment Report(PAR)_for this site. Unless a date is offered immediately,PHS-EHD will set a date after reviewing the Interim Groundwater Extraction report(due April 16,2001). As an alternative to having PHS-EHD set deadlines for the investi6ation,you may submit a schedule for each phase of the site investigation as suggested in our letter dated February 9,2001. Bear in mind, however,that PHS-EHD is reluctant to allow long periods of time to elapse between field work,report submittal,additional work plan submittal,and the needed investigation of the site. Without a submitted schedule, PHS-EHD is unaware of your long range plans and cannot accurately take into consideration your management agenda for this site and will continue to set deadlines for reports and field work to ensure that you proceed in an aggressive manner. PHS-EHD will evaluate a schedule for this site after it is submitted and comment on it as needed. Please continue to submit your work plans and reports to Michael Infuma,and you may call him at(209) 468-3454 should you have any questions or wish to discuss the site. Donna Heran, REHS,Director Environmental Health Division Michael J. Infuma Jr.,Sen RE S Dot Lofs om, RG Site Mitigation Unit IV/LOP Site Mitigation Unit IV/LOP MI/ c: Gettler Ryan-Doug Lee,6747 Sierra Ct.,Ste J.,Dublin,94568. c: CVRWQCB—Marty Hartzell,Sacramento.