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December 27, 2012 Lab ID : STK1251139 <br /> San Joaquin County PWD-Solid Waste Div. Customer : 3-2956 <br /> Quality Control-Inorganic <br /> Constituent Method DateW Type Units Conc. QC Data DQO Note <br /> Wet Chem <br /> E.C. 2510B 12/05/12:213503jmg Blank umbos/cm ND <1 <br /> (STK1251135-001) DH2 umhos/cm 0.4% 10 <br /> Solids,Total Dissolved 2540CE 12107/12:213589CHL Blank mg/L ND QO <br /> LCS mg/L 995.0 97.1% 90-110 <br /> (SP 1212474-001) Dup m 0.6% 10.0 <br /> Chloride 300.0 12/07/12:213710SBL LCS mg/L 25.00 107% 90-110 <br /> MS 1119/1. 500.0 106% 94-113 <br /> (STK1251139-001) MSD mg/L 500.0 106% 94-113 <br /> MSRPD m 100.0 0.07% 53 <br /> 300.0 12/08/12:218198CBL CCB ppm 0.16 1 <br /> CCV ppm 25.00 105% 90-110 <br /> CCB ppm 0.18 1 <br /> CCV PPM 25.00 104% 90-110 <br /> Oxygen,dissolved 4500-0 G (STK1251139-001) Du 1.0% 8.43 <br /> 5210B 12/03/12:300902CTH CCV mg/L 1.000 99.0% 80-120 <br /> CCV m 1.000 99.0% 80-120 <br /> OD 5220B 12/10/12:213655MCA Blank mg/L ND QO <br /> LCS mg/L 200.0 77.0% 73-84 <br /> MS mg/L 200.0 66.7% 43-142 <br /> (STK1251099-005) MSD mg/L 200.0 71.5% 43-142 <br /> MSRPD m 200.0 1 5.0% _<15 <br /> 5220B 12/17112:213956MCA Blank mg/L 3.6 20 <br /> LCS mg/L 200.0 74.6% 73-84 <br /> MS mg/L 200.0 76.2% 43-142 <br /> (STK1251099-003) MSD mg/L 200.0 71.5% 43-142 <br /> MSRPD m 200.0 4.4% <15 <br /> 5220D 12110/12:218101MCA CCB mg/L 8.3 20 <br /> CCV mg/L 200.0 69.9% 61-94 <br /> CCB mg/L 11.5 20 <br /> CCV 200.0 73.1% 61-94 <br /> 5220D 12/17/12:218174MCA CCB m9/L 2.0 20 <br /> CCV mg/L 200.0 72.3% 61-94 <br /> CCB mg/L 8.3 20 <br /> CCV m 200.0 74.6% 61-94 <br /> Definition <br /> PDS :PDS failed,matrix-Post Digestion Spike(PDS)not within Acceptance Range(AR)because of matrix interferences affecting this <br /> analyte. <br /> ICE :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 /> MS :Matrix Spikes-A random sample is spiked with a known amount of analyte.The recoveries are an indication of how that sample <br /> matrix affects analyte recovery. <br /> MSD :Matrix Spike Duplicate of MS/MSD pair-A random sample duplicate is spiked with a known amount of analyted.The recoveries <br /> are an indication of how that sample matrix affects analyte recovery. <br /> Dup :Duplicate Sample-A random sample with each batch is prepared and analyzed in duplicate.The relative percent difference is an <br /> indication of precision for the preparation and analysis. <br /> MSRPD :MS/MSD Relative Percent Difference(RPD)-The MS relative percent difference is an indication of precision for the preparation <br /> and analysis. <br /> ND :Non-detect-Result was below the DQO listed for the analyte. <br /> DQO :Data QualiObjective-This is the criteria against which the quality control data is compared. <br /> Explanation <br /> 435 :Sample matrix may be affecting this analyte.Data was accepted based on the LCS or CCV recovery. <br /> Page 15 of 28 <br />