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Laboratories rww Inc. Environmental Testing Laboratory Since 1949 Geologic Associates Reported: 08/24/2017 21:14 11415 W. Bernardo Ct, Ste 220 Project: French Camp San Diego, CA 92127 Project Number: Semi Annual Project Manager: Sarah Battelle Water Analysis neral Chemistry) Quality Control Report ® Precision & Accuracy Control Limits Source Source Spike Percent Percent Lab Constituent Type Sample ID Result Result Added Units RPD Recovery RPD Recovery Quals QC Batch ID: B[H1094 Used client sample: N Bicarbonate DUP 1722490-03 21.886 31.909 mg/L 37.3 10 Q01 Carbonate DUP 1722490-03 7.6625 ND mg/L 10 QC Batch ID: B[H1095 J Used client sample: Y - Description: MW -9A, 08/10/2017 15:00 Bicarbonate DUP 1722385-06 788.34 796.87 mg/L 1.1 10 Carbonate DUP 1722365-06 ND ND mg/L 10 QC Batch ID: B[H1270 Used client sample: N Chloride DUP 1722382-03 57.301 54.531 mg/L 5.0 10 MS 1722382-03 57.301 111.77 50.505 mg/L 108 80-120 MSD 1722382-03 57.301 112.21 50.505 mg/L 0.4 109 10 80- 120 Nitrate as N DUP 1722382-03 ND ND mg/L 10 MS 1722382-03 ND 5.1889 5.0505 mg/L 103 80-120 01fat MSD 1722382-03 ND 5.2384 5.0505 mg/L 0.9 104 10 80-120 DUP 1722382-03 117.09 111.23 mg/L 5.1 10 MS 1722382-03 117.09 226.04 101.01 mg/L 108 80-120 MSD 1722382-03 117.09 226.11 101.01 mg/L 0.0 108 10 80-120 QC Batch ID: B[H1271 Used client sample: Y - Description: MW -2, 08/10/2017 12:21 Chloride DUP 1722385-01 59.228 59.411 mg/L 0.3 10 MS 1722385-01 59.228 113.53 50.505 mg/L 108 80-120 MSD 1722385-01 59.228 113.42 50.505 mg/L 0.1 107 10 80-120 Nitrate as N DUP 1722385-01 ND ND mg/L 10 MS 1722385-01 ND 5.2172 5.0505 mg/L 103 80-120 MSD 1722385-01 ND 5.2010 5.0505 mg/L 0.3 103 10 80-120 Sulfate DUP 1722385-01 114.05 114.20 mg/L 0.1 10 MS 1722385-01 114.05 222.71 101.01 mg/L 108 80-120 MSD 1722385-01 114.05 222.95 101.01 mg/L 0.1 108 10 80-120 QC Batch ID: B[H1564 Used client sample: Y - Description: MW -2, 08/10/2017 12:21 Dissolved Calcium DUP 1722385-01 87.918 84.585 mg/L 3.9 20 MS 1722385-01 87.918 99.092 10.204 mg/L 110 75-125 MSD 1722385-01 87.918 102.15 10.204 mg/L 3.0 139 20 75-125 A03 Dissolved Magnesium DUP 1722385-01 37.017 37.226 mg/L 0.6 20 MS 1722385-01 37.017 47.007 10.204 mg/L 97.9 75-125 MSD 1722385-01 37.017 47.356 10.204 mg/L 0.7 101 20 75-125 Dissolved Sodium DUP 1722385-01 79.407 76.767 mg/L 3.4 20 MS 1722385-01 79.407 89.998 10.204 mg/L 104 75-125 MSD 1722385-01 79.407 92.759 10.204 mg/L 3.0 131 20 75-125 A03 The results in this report apply to the samples analv_ed in accordance with the chain of cuslodv document. This analytical report must he reproduced in as entirely. All results listed in this report are for the exclusive use of the submitting party. BC Laboratories, Inc. assumes no responsibility for report alteration, separation, detachment or third party interpretation. Report ID: 1000641231 4100 Atlas Court Bakersfield, CA 93308 (661) 327-4911 FAX (661) 327-1918 www.bclabs.com Page 67 of 69