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�4 <br /> �'��' 1386 EAST BEAIVIER S'T'REET <br /> E�L L�.S'7F_RN WOODLAND, CA 95776-6003 <br /> Ca m-ENGINEERS PAX (916)662-0273 <br /> CALIF CONTRACTOR#513857 A CORPORATION (916) 668-5300 <br /> REGISTERED GEOLOGISTS <br /> Ms. Linda Turkatte March 8, 1993 <br /> San Joaquin County Health (addendum for 5/20/91) <br /> P.O. Box 2009, <br /> Stockton, CN 55201 <br /> (209) 468-3442 <br /> (Pax) 464-0138 <br /> RE: Addendum to Work Plan, dated May 20, 1991, for further <br /> assessment of DESERT PETROLEUM SERVICE STATION #787, 950 lith <br /> Street, Tracy, San Jcaquin County, California, Section 29;T2S;R5E <br /> MDB&M. <br /> Dear Ms. Turkatte: <br /> As to your letter dated February 25, 1993, this addendum is being <br /> prepared for the drilling and sampling of two borings and <br /> converting one of these borings into a ground water monitoring <br /> well MW4, see Appendix A. This addendum work plan was requested <br /> by Mr. John Rutherford of Desert Petroleum on March 8, 1993 . <br /> SITE LOCATION <br /> _= Desert Petroleum STATION # 787 is located in Section 29; `I2S; <br /> R5E; MDB&M on the corner of 950 West lith Street- and 9th Street, <br /> in Tracy, California. <br /> PURPOSE AND SCOPE <br /> On February 11, 1993, a meeting at the PHS/EHD, 445 N. San <br /> Joaquin Street, Stockton, California occurred to discuss what <br /> additional sampling was needed to consider the above site for <br /> recommendation for site closure. Attendants of the meeting were <br /> Linda Turkatte and Diane Hinson of San Joaquin County Health, <br /> John Rutherford of Desert Petroleum, and myself, George Converse <br /> of Western Geo-Engineers. As stated in the February 25, 1993 <br /> letter, Appendix A, two sample borings were needed to test soil <br /> above top of around water northeast and west of the underground <br /> storage tanks. Also the northeast boring is to be completed as a <br /> monitoring well (MW4) and the ground water tested for total <br /> petroleum hydrocarbons gasoline range (TPHg) , BTEX and 'lead. The <br /> pre-existing ground water monitoring wells will also be tested <br /> for TPHg, BTEX and lead. All tour wells will be surveyed by a <br /> licensed surveyor (Nolte & Assoc. ) and will be used for ground <br /> water gradient information. <br /> Pagel <br />