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FRIEDMAN & BRUYA, INC. <br /> ENVIRONMENTAL CHEMISTS <br /> Date of Report: 03/17/17 <br /> Date Received: 03/10/17 <br /> Project: Brien Ford, PO 160594-V002, F&BI 703196 <br /> QUALITY ASSURANCE RESULTS FOR THE ANALYSIS OF WATER <br /> SAMPLES FOR TOTAL PETROLEUM HYDROCARBONS AS <br /> DIESEL EXTENDED USING METHOD NWTPH-Dx <br /> Laboratory Code: Laboratory Control Sample <br /> Percent Percent <br /> Reporting Spike Recovery Recovery Acceptance RPD <br /> Analyte Units Level LCS LCSD Criteria (Limit 20) <br /> Diesel Extended ug/L(ppb) 2,500 82 85 63-142 4 <br /> 11 <br />