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PRECISION <br /> ENVIRO-TECH <br /> Analytical Laboratory CERTIFICATE OF ANALYSIS <br /> Thursday,February 3,2005 <br /> Attention: Abby Racco <br /> Neil O.Anderson &Associate report Page 11 of 16 <br /> 902 Industrial Way <br /> Lodi, CA 95240 <br /> Trihalomethanes by EPA Method 524.2-Quality Control <br /> Precision Enviro-Tech <br /> Reporting Spike Source °Iasc RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch AA52512-Volatiles <br /> Blank(AA.52512-BLKI) Prepared&Analyzed:25-Jan-05 <br /> Bromadichloromethane ND 0.500 ug/1 <br /> Bromoform ND 0.500 " <br /> Chloroform ND 0.500 " <br /> Dibromochloromethane ND 0.50 <br /> Surrogate:4-Bromofluarobenze-w 8.20 8.00 102 75-115 <br /> Surrogate: 1,2-Dichlorobenzesn,44 8.55 8.00 107 75-115 <br /> LCS(AA52512-BSI) _ Prepared:25-Jan 0S Analyzed:26-Jan-05 <br /> • Bromodichloiomethme 9.18 0.500 ug/I 9.52 96 75-115 <br /> Bromoform 8.18 0.500 9.52 86 75-115 <br /> Chloroform 8.54 0.500 9.52 90 75-115 <br /> Dibromochloromethane 8.89 0.500 9.52 93 75-115 <br /> Surrogate:4-BromaJluorobenzene 7.88 8.00 98 75-115 <br /> Surrogate:1,2-Dichlorobenzened4 7.95 8.00 99 75-115 <br /> LCS Dup(AA52512-BSM) Prepared:25-Jan-OS Analyzed:26-Jan-05 <br /> Bromodichlommethane 9.12 0.500 ug/1 9.52 96 75-115 0.7 20 <br /> Bromoform 8.33 0.500 9.52 87 75-115 2 20 <br /> Chloroform 8.50 0.500 9.52 89 75-115 0.5 20 <br /> Dibromochloromelbane 8.94 0.500 9.52 94 75-115 0.6 20 <br /> Surrogate:4-Bromoftuorobenzene 7.94 - 8.00 99 75-715 <br /> Surrogate:1,2-Dichlorobenzened4 7.96 8.00 100 75-115 <br /> Reference AA52512-SRMI) Prepared.&Analyzed:25-Jan-05 ._. <br /> Bromodicblommetbane 8.70 0.500 us(] 9.52 91 0-200 <br /> Bromoform 8.55 0.500 952 90 0-200 <br /> Chloroform 7.92 0.500 " 9.52 83 0-200 <br /> Dibromoohloromethane 8.54 0.50 9.52 90 0-200 <br /> Surrogate:4-Bromofluorobeuem 7.78 8.00 97 75-115 <br /> Surrogate:1,2-Dichlorobenzene-d4 7.71 8.00 96 75-115 <br /> mdL- effligrawsper Liter-ppm DLA-Detection Llmitfor Purpose afNeporfing <br /> uy/L-mlcrogmoisper Liter=ppb Exceptianat sample maoiau'or interferew"may <br /> resulf in higher detection limits. <br /> iRESPECTFULLY SUBNUTTED, <br /> � V <br /> Jonathan Le,Laboratory Director <br /> -1 „ .,, r r, ..- n, 0-1-. 'A (14791/1 -z.,,-,.. Iona 477 RIYK /7n01177-RIJR <br />