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TOTAL PETROLEUM HYDROCARBONS AS DIESEL <br /> INCHCAPE TESTING SERVICES/ENVIRONMENTAL LABORATORIES <br /> (408) 432-8192 <br /> i <br /> LABORATORY CONTROL SAMPLE REPORT <br /> i <br /> Lab Group # 544 Laboratory ID M/N0143 <br /> Matrix WATER Date Released 6/9/97 <br /> Date Extracted 518197 Instrument ID HP9 <br /> Date Analyzed 5/8/97 Concentration Units ug/L <br /> 1 <br /> COMPOUND SPIKE LCS % REC LCSD %REC <br /> NAME AMT CONC LCS CONC LCSD RPD <br /> 1 Diesel 1250 1070 86% 1100 88% 3% <br /> o-Terphenyl 93% 87% <br />' Quality control limits for LCS/LCSD recovery are 34-111% <br />' Quality control limits for RPD(relattve percent difference) are +/- 18% <br /> Quality control limits for o-terphenyl recovery are 65-122% <br /> RESULTS -TPHD - Page 2 Issued on 6/9/97 at 5 21 pm <br />