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0111 NCI CERTIFICATE OF ANALYSIS Pf41S1 <br />Analytical Laboratory <br />3935 N. Coronado Ave, Stockton CA. 95204 Phone: (209) 477-8105 <br />Chesney Consulting <br />Project Number: [none] <br />P. 0. BOX 3794 <br /> <br />Project Name: Country Manor MHP <br />Work Order No.: <br />Turlock, CA 95381 <br />Project Manager: Don Chesney <br />Conventional Chemistry Parameters by APHAJEPA Methods - Quality Control <br />Analyte Result <br />Reporting <br />Limit Units <br />Spike <br />Level <br />Source <br />Result %REC RPD Notes <br />Duplicate (AC11705-DUPI) <br />Dissolved Oxygen 0.190 0.10 mg/L 0.200 5 <br />Duplicate (AC11706-DUP1) <br />pH 7.65 0.0100 pH Units 7.65 0.03 <br />Reference (AC11706-SRMI) <br />P'-1 7.02 0.0100 pH Units 7.00 100 <br />Blank (AC11708-BLKI) <br />Nitrate as N ND 0.400 mg/L <br />Nitrite as N ND 0.100 <br />LCS (AC11708-BSI) <br />Nitrate as N 2.37 0.400 mg/L 2.26 105 <br />Nitrite as N 3.19 0.100 3.04 105 <br />LCS Dup (ACI1708-BSDI) <br />Nitrate as N 2.32 0.400 mg/L 2.26 103 2 <br />Nitrite as N 3.22 0.100 3.04 106 0.7 <br />Matrix Spike (AC11708-MS1) <br />Nitrate as N 2.36 0.400 mg/L 2.31 ND 102 <br />Nitrite as N 3.31 0.100 3.10 ND 107 <br />Matrix Spike Dup (AC11708-MSDI) <br />Nitrite as N 3.32 0.100 mg/L 3.10 ND 107 0.2 <br />Nitrate as N 2.27 0.400 2.31 ND 99 4 <br />Reference (AC11708-SRMI) <br />Nitrite as N 3.15 0.100 mg/L 3.04 104 <br />Nitrate as N 2.22 0.400 2.26 98 <br />Approved By <br />Precision Enviro-Tech. <> California D.O.H.S. Cert. #2387 <br />Page 5 of 10