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Laboratories Inc. � .. <br /> Environmental Testing Laboratory Since 1949 <br /> Ground Zero Analysis, Inc. Reported: 10/05/2015 15:04 <br /> 1172 Kansas Avenue Project: City of Escalon,Monitoring Wells <br /> Modesto,CA 95351 Project Number: 5894 <br /> Project Manager: Project Manager <br /> Water Analysis (General Chemistry) <br /> ' Quality Control Report - Precision & Accuracy <br /> Control Limits <br /> ' Source Source Spike Percent Percent Lab <br /> Constituent Type Sample ID Result Result Added Units RPD Recovery RPD Recovery Duals <br /> QC Batch ID: BYI2193 Used client sample: N <br /> Biochemical Oxygen Demand_Seeded OUP 1523641-01 97.981 94.550 mg/L 3.6 20 <br /> QC Batch ID: BYI2439 Used client sample: N <br /> ' Dissolved Calcium DUP 1524139-02 61.245 60.982 mg/L 0.4 20 <br /> MS 1524139-02 61.245 68.909 10.204 mg/L 75.1 75-125 <br /> MSD 1524139-02 61.245 68.953 10.204 mg/L 0.1 75.5 20 75-125 <br /> Dissolved Magnesium OUP 1524139-02 30.986 30.661 mg/L 1.1 20 <br /> MS 1524139-02 30.986 40.881 10.204 mg/L 97.0 75-125 <br /> MSD 1524139-02 30.986 40.991 10.204 mg/L 0.3 98.0 20 75-125 <br /> Dissolved Sodium DUP 1524139-02 64.812 64.517 mg/L 0.5 20 <br /> ' MS 1524139-02 64.812 71.428 10.204 mg/L 64.8 75.125 A03 <br /> MSD 1524139-02 64.812 71.376 10.204 mg/L 0.1 64.3 20 75.125 A03 <br /> Dissolved Potassium DUP 152413902 3.9719 3.9190 mg(L 1.3 20 <br /> MS 1524139-02 3.9719 13.809 10.204 mg/L 96.4 75-125 <br /> ' MSD 1524139-02 3.9719 13.776 10.204 mg/L 0.2 96.1 20 75-125 <br /> 1 <br /> 1 <br /> 1 <br /> The results in this report apply to the samples analyzed in acrordance with the chain ofcvsrodv document This analytical report must be reproduced in iu entireN. <br /> All results listed in this motor arc for the exclusive use of the suhmining may, Bc Lahmeades,Joe.assumes no responsibility he report aher+tiem sepaa aion,detachment or third neap'interpretation. <br /> Report ID: 1000403977 4100 Atlas Court Bakersfield,CA 93308 (661)327-4911 FAX(661)327-1918 w .bclabs.com Page 41 of 45 <br /> t <br />