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CALIFORNIA LABORATORY SERVICES <br /> 09/22/04 10 07 <br /> ENSR-Sacramento Project Former Unocal 5098,5400 CI S W r>t it �ti, �I0426 <br /> 10411 Old Placerville Rd,Suite 210 Project Number 06940-293-130 COC# 41209 <br /> Sacramento,CA 95827-2508 Project Manager Ben 1 Heningburg <br /> Conventional Chemistry Parameters by APHA/EPA Methods- Quality Control <br /> Reporting Spike Source %REC RPD <br /> [Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br />' Batch CN07159-General Prep <br /> Blank(CN07159-BLKI) Prepared&Analyzed 09/16/04 <br /> Chloride ND 050 mg/L <br /> Fluoride ND 010 <br /> Nitrate as NO3 ND 050 <br /> Sulfate as SO4 ND 10 " <br />' LCS(CN07159-BS1) Prepared&Analyzed 09/16/04 <br /> Chloride 206 050 mg/L 200 103 75-125 <br /> Fluoride 195 010 200 975 75-125 <br /> Nitrate as NO3 208 050 200 104 75 125 <br /> Sulfate as SO4 504 10 500 101 75-125 <br /> LCS Du_p(CN07159-BSDI) _--Prepared Prepared_&Analyzed 09/16/04 _ <br /> Chloride 207 050 mg/L 200 104 75-125 0 484 25 T <br /> Fluoride 197 010 i 200 985 75-125 1 02 25 <br /> Nitrate as NO3 208 050 200 104 75-125 000 25 <br /> Sulfatt as SO4 505 1 0 500 101 75-125 0 198 25 <br /> Matrix Spike(CN07159-MS1) Source CNI0426-03 Prepared&Analyzed 09/16/04 <br /> Fluoride 206 010 nig/L 200 0 15 102 75-125 <br /> Chloride 255 050 200 099 123 75 125 <br /> Nitrate as NO3 21 3 050 ii 200 036 105 75-125 <br /> Sultate as SO4 575 10 500 095 113 75-125 <br /> Matrix Spike Dup(CN07159-MSD1)_ Source CNI0426-03 _Prepared_&Analyzed 09/16/04 <br /> Fluoride— - 203 0 10 mg/L 200 015 101 75-125 147 30 <br /> Chloride 254 050 200 099 122 75-125 0 393 30 <br /> Nitrate as NO3 21 2 050 200 036 104 75 125 0 471 30 <br /> Sultate as SO4 57 5 1 0 500 095 113 75-125 000 30 <br /> CA DOHS EL.AP Accreditation/Registration[dumber 1233 <br /> 3249 Fitzgerald Road Rancho Cordova,CA 95742 www.californialab com 916-638-7301 Fax 916-638-4510 <br />