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ENVIRONMENTAL <br />CHEMICAL ANALYSIS LABORATORIES, INC. <br />PETROLEUM J. J. EGLIN, REG. CHEM. ENGR. <br />4100 PIERCE RD., BAKERSFIELD, CALIFORNIA 93308 PHONE 327-4911 <br />BTX DIESEL Qf..)ALITY CONTROL DATA <br />Water Work <br />1710 Main St <br />Escalon, CA 95320 <br />Attention: Eric Taylor <br />Lab No: 5691-4 <br />Sample Desc: Tracy Group Partnership <br />TGP-B3-14'-14.5' 7/18/89 <br />Spike ID: 5624-9 <br />Analysis Date: 01 -Aug -89 <br />Units: u g/g <br />QC Comments: <br />ND = None Detected <br />Spiked Sample Concentration - Sample Concentration <br />% Recovery =-------------------------------------------------- X 100 <br />(Concentration of Spike) <br />RPD (Relative Percent Difference) = <br />Spiked Sample Conc. - Spiked Duplicate Sample Conc. <br />---------------------------------------------------- X 100 <br />(Average Concentration of Spikes) <br />Conc. <br />Spike <br />Sarrx-)le <br />of <br />Spike <br />D ip <br />Spike <br />Constituent <br />-------------------------------------------------------------------- <br />Conc. <br />Spike <br />% Rec <br />Rec <br />RK) <br />Benzene <br />ND <br />5.01 <br />92.57 <br />88.25 <br />4.78 <br />Toluene <br />ND <br />5.03 <br />102.96 <br />98.30 <br />4.63 <br />Ethyl Benzene <br />ND <br />5.09 <br />96.16 <br />91.30 <br />5.19 <br />p -Xylene <br />ND <br />5.02 <br />98.05 <br />93.16 <br />5.11 <br />m -Xylene <br />ND <br />5.11 <br />100.53 <br />95.96 <br />4.65 <br />o -Xylene <br />ND <br />5.03 <br />99.78 <br />95.95 <br />3.91 <br />TPH Diesel <br />ND <br />100.01 <br />95.68 <br />106.93 <br />11.11 <br />QC Comments: <br />ND = None Detected <br />Spiked Sample Concentration - Sample Concentration <br />% Recovery =-------------------------------------------------- X 100 <br />(Concentration of Spike) <br />RPD (Relative Percent Difference) = <br />Spiked Sample Conc. - Spiked Duplicate Sample Conc. <br />---------------------------------------------------- X 100 <br />(Average Concentration of Spikes) <br />