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DEPARTMENT OF HEAIT%woSERVICES <br /> 2131 BERKELEY WAY '' <br /> r% %ERKELEY, CA 94704 <br /> X415) 540--2800 <br /> March 8, 1990 <br /> Victor A. Weiss RECEIVE <br /> Quality Assurance Officer <br /> Canonie Environmental Services Corp JUL 2 0 1990 <br /> 212 Frank West Circle, suite A ENVIRONMENTAL HEALTH <br /> Stockton, CA 95206 PERMIT/SERVICES <br /> Dear Mr. Weiss: <br /> Per your letter of February 23, 1990, it is 'correct that in the <br /> California WET extracts, Title 22, 66700 (g) (I) , no acid. <br /> digestions are needed. <br /> As far as metal analysis is concerned, the EPA Method 6010 °in the <br /> SW 846, is also an acceptable method , in the State of California <br /> for laboratory accreditation purposes. <br /> Sincerely, <br /> y. George' C. Kulasingam, Ph.D. , Manager <br /> Q Environmental Laboratory <br /> Accreditation Program <br /> cc: Fred Seto, Ph.D. <br /> Nelson Lan <br /> v <br /> 2 :i 'JU <br />