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Engineers <br /> Planners <br /> • Economists <br /> Scientists <br /> CASE NARRATIVE <br /> � I. <br /> General Chemistry <br /> 30710 <br /> i <br /> j <br /> i4 <br /> I. Holding Time: All criteria met. <br /> II. Analysis:. <br /> . A. Calibration: Acceptance criteria met. + <br /> B. Blanks: Acceptance criteria met. <br /> C. Matrix Spike: Acceptance criteria met. <br /> D. Duplicate Analysis: Acceptance criteria met. i . <br /> E. Lab Control Sample: Acceptance criteria met. <br /> F. The Nitrate results are reported as N. To convert to Nitrate as NO3 <br /> multiply the result by 4 .43 . The primary method for Nitrate is EPA ` <br /> 300. 0. The alternate method, EPA 353 . 3 may be used if the sample <br /> can not be analyzed with method 300.0. <br /> G. Other: Low level sulfate contamination was found in <br /> the method blank. Sample concentrations and <br /> greater than 10 times method blank <br /> contamination. <br /> III. I certify that this data package is in compliance with the terms and <br /> conditions agreed to by the client and CH2M HILL, both technically and <br /> for completeness, for other than the conditions detailed above. <br /> i <br /> ji <br /> SIGNED: ?1j0,4d-U W_1A At DATE: 7 'a <br /> Randall L. Wright u <br /> General Chemistry Supervisor <br /> I <br /> CH2M HILL Redding Quality Analytical Laboratories 5090 Caterpillar Rodd,Redding,California 96003 916.244.5227 <br />