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ENVIRONMENTAL <br />CHEMICAL ANALYSISLABORATORIES , INC. <br />PETROLEUM :000 <br />J. J. EGLIN, REG. CHEM. ENGR. <br />4100 PIERCE RD., BAKERSFIELD, CALIFORNIA 93308 PHONE 327-4911 <br />BTX DIESEL QUALITY CONTROL DATA <br />Water Work <br />1710 Main St <br />Escalon, CA 95320 <br />Attention: Eric Taylor <br />Lab No: 5691-1 <br />Sample Desc: Trac; Group Partnership <br />TGP-B1-16"-16.5" 7/17/89 <br />Spike ID: 56':'4-9 <br />Analysis Date: 01 -Aug -89 <br />Units: ug/9 <br />9C Comments: <br />ND = None Detected <br />Spiked Sample Concentration - Sample Concentration <br />°o 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 />Sample <br />of <br />Spike <br />Dup <br />Spike <br />Constit-lent <br />------------------------------------------------------------------- <br />Comic . <br />Spike <br />% Per; <br />% R.ec <br />RPD <br />Denzene <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 />5.0.9 <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 />rn-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 />9C Comments: <br />ND = None Detected <br />Spiked Sample Concentration - Sample Concentration <br />°o 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 />