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CHEMWEST <br /> ANALYTICAL LABORATORIES, INC. <br /> May 16, 1990 <br /> Kleinfelder <br /> 9795 Business Park Drive, #D <br /> Sacramento, CA 95827 <br /> Attention: Mr. Eric Findlay <br /> Subject: Report of Data - Case Number 5886 <br /> Dear Mr. Findlay: <br /> The technical staff at CHEMWEST is pleased to provide our report for the <br /> analysis you requested: Total Chromium - EPA Method 6010, Hexavalent <br /> Chromium - EPA 7196; Trivalent Chromium - by calculation, Nitrate - EPA <br /> Method 300.0, Copper - EPA Method 6010 and Arsenic - EPA Method 6010. <br /> Nine water samples for Project Number 24-2009-02 were received April 25, <br /> 1990 in good condition. Discrepancies between the total and hexavalent <br /> chromium results may be due to error introduced by large dilutions necessary <br /> for hexavalent chromium analysis. <br /> Results of the analyses and appropriate reporting limits are presented on the <br /> following page(s). <br /> Thank you for choosing CHEMWEST Laboratories. Should you have questions <br /> concerning this data report or the analytical methods employed, please do <br /> not hesitate to contact Debbie Pearce your Customer/Technical Service <br /> Representative. We hope that you will consider CHEMWEST Laboratories for <br /> your future analytical support and service requirements. <br /> Sincerely, <br /> Robert T. Hart <br /> Data Control Manager <br /> cc: File <br /> 600W North Market Boulevard Sacramento, CA 95834 Phone (916) 923-0840 FAX (916) 923-1938 <br /> A Sucs.c:cry of COMDUChem Corporation <br />