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PUBLIC HEALTH SEfxNVICES <br /> .G�0 <br /> SAN JOAQUIN COUNTY =' <br /> JOGI KHANNA MD,M.P.H. W <br /> Health Office <br /> P.Q. Box 2009 . (1601 East Hazelton Avenue) a Stockton,California 95201 <br /> (209) 468-3400 <br /> July 26, 1969 <br /> ciopy <br /> MR and MRN Trusts <br /> Attn: Mr. John Dieckman <br /> 500 Airport B1, Ste 220 <br /> Burlingame, CA 94010 <br /> RE: Preliminary RepDrt—Assessment of Soil/Groundwater Contamination, <br /> 601 South Ventura, Stockton <br /> Please be advised that this office has reviewed the above referenced wDrkplan. <br /> Our review has been somewhat hindered due to preliminary information omitted <br /> from the workplan, as indicated on the attached check list, and much of the <br /> submitted report was illegible. <br /> In addition to the lack of preliminary inFormation, we have the following <br /> comments regarding the proposed workplan: <br /> 1. Reports/work plans submitted to thi office are to be site specific. <br /> Refer to the Tri—Regional Staff Rec mmendations for specific format and <br /> procedures. Adherence to the guidelines will expedite the review <br /> prDCess. <br /> 2. Provide detailed top—view and cross—sectional diagrams of the proposed <br /> re--excavation site. Calculate the total cubic yardage of the original <br /> excavated soil and proposed re—excavated soil. Include the location of <br /> original excavation soil on diagram Stock—piled soils shall be stored <br /> so that vapor emissions and dust controls are restricted. <br /> 3. Illustrate on detailed site map the suggested locations of sidewall and <br /> bottom hole sampling, based upon 1 sample per 25 cubic yards removed. <br /> In the event groundwater is encountered during excavation, the bottom <br /> sample should -be collected at soil/viater interface and a "grab water <br /> sample collected for analysis. <br /> 4. Refer to Appendix A, Table 2 of the enclosed Tri—Regional Board Staff <br /> Recommendations for Minimum Laboratory Verification procedures for soil <br /> and groundwater sampling plans. <br /> 5. Residual contaminants remaining at the conclusion of the excavation <br /> attempt shall be addressed in the s ils remediation plan. The soils <br /> remediation plan should include a feasibility study for each option <br /> proposed. This plan can be preparet in concert with the submittal of <br /> soil results for the pending aeration activities. <br /> 6. Provide this office with a site specific Health and Safety Plan (see 29 <br /> CFR 1910. 120 of OSHA regulations). <br /> A Division of San Joaquin County Health Care Services <br />