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P ©2 <br /> 0 <br /> Wm. J. Hunter & Associates 2220 Loma Vista Dr <br /> gistered Geologists Sacramento. CA 95825 <br /> etroleuni Mineral Appraisers (916) 972-7941 <br /> FAX (916) 972-1683 <br /> ADDENDUM TO <br /> SOIL CONTAMINATION WORKPLAN <br /> Dated Oct. 31 1991 for <br /> 18770 Tom Paine Road <br /> Tracy, CA <br /> Prepared for <br /> `Jan Joaquin Co. Public Health Service <br /> Enrivonmental Health Divi%on <br /> by <br /> N41lian J. Hunter & Associates <br /> Nwvamber 18, 1991 <br /> PROPERTY ADDRESS: 167/5 Tom Paine Road, Trat-y, Californias <br /> PROPERTY OWNERS Sierra-Bay Froduct i tan Credit Association <br /> NAME & PHONE NO. OF CONTACT PERSON: Elicit E. Appleton , (209) <br /> 931--3770 <br /> REVIEW OF WORK DONE 11/16/1991 UNDER APPROVED WORKPLAN: <br /> The workplan as submitted had proposed 5, 10' deep hand-auger <br /> holes located approximately 10 feet concentrically around the <br /> site of the removed UST. <br /> Work began on 1 1/16/14'x'1 using J i m Thorpe Oil equipment under the <br /> supervision of Wm. Hunter, RG. The first baring was located 12' <br /> westerly from the tank site. Contaminated soil was encountered <br /> at 4 '611 , and continued to approximately 4 '911 , when augering was <br /> stopped. No evidence of water was noted. <br /> Because of the shallow depth of the contamination, it was decided <br /> t4 use the backhoe bucket where poo bible instead of hand <br /> angering. A spot was measured 24 west of auger-hole #1 , and a <br /> narrow trench was dug to 7 ' ; contamination was noted below 6 ' . A <br /> soil sample was taken at 7 ' using the backhoe bucket. The trench <br /> was refilled with the removed spoil . <br /> The backhoe then moved to a location 24 ' south of the farmer UST <br /> site, and a trench was dug to e ` , where contamination was <br /> observed. rhe soil from the bottom was moist , but no free water <br /> was noted. No sample was taken, and the trench was refilled with <br /> the removed spoil . <br /> The backhoe was moved an additional 9 ' farther south - 33 ' from <br /> the UST site - and a trench was dug to 7 A strong petroleum <br /> odor was noted below 6'6" in sandy clay. A sail sample was taken <br /> 1 <br /> �.3 <br />