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June 9, 2010 Lab ID : STK1033632 <br /> City of Lathrop Groundwater Monitoring Customer : 3-16663 <br /> Quality Control-Inorganic <br /> Constituent Method Date/1D Type Units Cone. QC Data DQO Note <br /> Wet Chem <br /> Nitrogen,Total Kjeldahl 351.2 (STK1033632-001) MSD mg/L 0.4000 216% 25-149 435 <br /> MSRPD mg/L 0.4000 0.62 <1 <br /> 351.2 05/20/2010:205076 Blank mg/L ND <1 <br /> LCS mg/L 10.00 56.4% 41-148 <br /> LCS mg/L 10.00 65.3% 41-148 <br /> MS mg/L 0.4000 -28.5% 25-149 435 <br /> (SP 1004585-003) MSD mg/L 0.4000 39.5% 25-149 <br /> MSRPD mg/L 0.4000 0.27 <1 <br /> Ammonia Nitrogen 4500NH3B 05/12/2010:204785 Blank mg/L ND <0.2 <br /> LCS mg/L 10.00 77.6% 63-116 <br /> MS mg/L 0.4000 0.0% 17-127 435 <br /> (SP 1004103-001) MSD mg/L 0.4000 175% 17-127 435 <br /> MSRPD mg/L 0.4000 0.70 <0.2 435 <br /> 4500NH313 05/19/2010:205040 Blank mg/L ND <0.2 <br /> LCS mg/L 10.00 63.4% 63-116 <br /> MS mg/L 0.4000 -49.5% 17-127 435 <br /> (CH 1072599-001) MSD mg/L 0.4000 -34.2% 17-127 435 <br /> MSRPD mg/L 0.4000 0.061 <0.2 <br /> 4500NH3G 05/13/2010:205558 ICB mg/L 0.000 0.2 <br /> ICV mg/L 2.000 105% 90-110 <br /> CCB mg/L 0.000 0.2 <br /> CCV mg/L 2.000 104% 90-110 <br /> CCB mg/L 0.000 0.2 <br /> CCV mg/L 1 2.000 106% 90-110 <br /> 4500NH3G 05/20/2010:205875 CCB mg/L 0.000 0.2 <br /> CCV mg/L 2.000 107% 90-110 <br /> CCB mg/L 0.000 0.2 <br /> CCV mg/L 2.000 110% 90-110 <br /> CCB mg/L 0.000 0.2 <br /> CCV mg/L 2.000 104% 90-110 <br /> CCB mg/L 0.000 0.2 <br /> CCV mg/L 2.000 109% 90-110 <br /> MBAS 5540C MS mg/L 100.0 100% 90-110 <br /> (STK1033632-001) MSD mg/L 100.0 100% 90-110 <br /> MSRPD mg/L 100.0 0.0 <0.1 <br /> 5540C 05/04/2010:205177 CCB mg/L 0.000 0.1 <br /> CCV mg/L 100.0 100% 99-101 <br /> Nitrogen,Total Kjeldahl EPA351.2 05/13/2010:205565 ICB mg/L -0.155 0.2 <br /> ICV mg/L 2.000 106% 90-110 <br /> CCB mg/L 0.032 0.2 <br /> CCV mg/L 2.000 110% 90-110 <br /> CCB mg/L 0.029 0.2 <br /> CCV mg/L 2.000 107% 90-110 <br /> EPA351.2 05/28/2010:206263 CCB mg/L -0.144 0.2 <br /> CCV mg/L 2.000 107% 90-110 <br /> CCB mg/L -0.150 0.2 <br /> CCV mg/L 2.000 107% 90-110 <br /> Definition <br /> ICV :Initial Calibration Verification-Analyzed to verify the instrument calibration is within criteria. <br /> ICB :Initial Calibration Blank-Analyzed to verify the instrument baseline is within criteria. <br /> CCV :Continuing Calibration Verification-Analyzed to verify the instrument calibration is within criteria. <br /> CCB :Continuing Calibration Blank-Analyzed to verify the instrument baseline is within criteria. <br /> Blank :Method Blank-Prepared to verify that the preparation process is not contributing contamination to the samples. <br /> LCS :Laboratory Control Standard/Sample-Prepared to verify that the preparation process is not affecting analyte recovery. <br /> Page 26 of 27 <br />