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PRECISION <br /> • � ENVIRO-TECH <br /> Analytical Laboratory CERTIFICATE OFANAL YSIS <br /> Thursday,January 20,2005 <br /> Attention: Abby Raceo <br /> Neil O.Anderson &Associate Report page 7of12 <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 %RHC RPD <br /> Amilym Result Limit Units Level Result %RF.0 Limits RPD Limit Notes <br /> Batch AA51306-Volatiles <br /> Blank(AA513(6-BLK1) Prepared_&Analyzed: 13-Jan-05 <br /> Bromadichloromethaoe ND 0.500 agfl <br /> Bromoform ND 0.500 " <br /> Chloroform ND 0.500 " <br /> Dibromochlommethane ND 0.500 " <br /> Surrogate:4-BromaJluorobenzene 8.60 8.00 108 75-175 <br /> Surrogate:1,1-Dichlorobenzene-d4 8.70 8.00 109 75-115 <br /> L_CS(AA51306-BSI) _ Prepared&Analyzed: 13-Jan-05 <br /> Bromodichloromethane 20.2 0.500 ug0 19.0 106 75-115 <br /> Bromofom 18.2 0.500 19.0 96 75-115 <br /> Chloroform 20.8 0.500 19.0 109 75-115 <br /> • <br /> Dibromochlommethane 19.4 0.500 19.0 102 75-115 <br /> Surrogate:4-Broofluorobnzene e7.95 8.00 99 75-1/5 <br /> m <br /> Surrogate:1,2-Dichlorobenzene-d4 8.22 8.00 103 75-115 <br /> LCS Dup(AA51306-BSDI) Prepared&Analyzed: 13-Jan-05 <br /> Bromodichloromethene 20.9 0.500 ug/1 19.0 110 75-115 3 20 <br /> Bromoform 18.5 0.500 19.0 97 75-115 2 20 <br /> Chloroform 18.5 0.500 " 19.0 97 75-115 12 20 <br /> Dibromochlmnmethane 19.9 0.500 19.0 105 75-115 3 20 <br /> Surrogate:4-Bromofluorobenzene 7.87 8.00 98 75.115 <br /> Surrogate:1,2-Dichlorobeuene-d4 8.21 8.00 103 75-115 - <br /> Re[erence(AA51306-SRM - _ Prepared&AnaTyzed: 13-Jan-05 <br /> Bromodichlommethene 19.1 0.500 ugfl 19.0 101 0-200 <br /> Bramofom 19.1 0.500 " 19.0 101 0-200 <br /> Chloroform 19.2 0.500 19.0 101 0-200 <br /> Dibromochloromethane 19.4 0.500 19.0 102 0-200 <br /> Surrogate:4-Bronui luorobenzene 7.81 8.00 98 75-115 <br /> Surrogate.:1,2-Dichlorobenzene-d4 8.08 8.00 101 75.115 <br /> eig/l,=maligranperLter_ppm DLR^DetectionLoutforl'urpme ofReponing. <br /> vy/6=microgroms per Lher=ppb lucepnoml eample matrices or interlemas may <br /> reeult u higher dmeTan limits. <br /> RESPECTFULLY SUBMITTED, <br /> 0 C <br /> Jonathan Le,Laboratory Director <br /> 7743 N. West Lane . Suite B2 Stockton CA. 95210 phone: (209) 477-8105 Fccr: (209) 477-8148 <br />