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• • P 03 <br /> SEP 2 2 1989 <br /> ENVIRONMENTAL HEALTHPERMIT/SERVICES <br /> September 25, 1'78x1 <br /> Mg. n1Py <br /> Department of Environmental Hwaltll <br /> San Joaquin County <br /> 1601 k-ast Hazelton Avenue <br /> Stockton, cA Y'jaQl <br /> Dear Ms. Foley: <br /> I was contacted this morning by Cottle Engineering with respect to <br /> questions you had regarding the DHS Hazardous Waste l'esting <br /> certification of Western Environmental Science and Technology (WEST ) , <br /> Please find included with this letter a copy of WEST ' s DHS Hazardo(as <br /> Waste Testing Certificate. WEST was certified on May 24, 1989 by DHS <br /> for EPA Methods 8010/601. ; 8020/602; and modified method 8013, <br /> Please Call me if you have any further questions regarding WEST ' s <br /> certification, 'Thank you for your attention to this matter . <br /> Sincerely , <br /> X�rR, Wieser <br /> Director of Operations <br /> Weabrn[nvlronmama! <br /> sae�wue ILub,aUUy <br /> 104U Dino fN'iw,surto 3 <br /> Duviu,CA 96910 <br /> 91t7 7"96M <br />