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June 9, 2021 Lab ID : STK2135836-001 Customer ID : 3-17919 San Joaquin Co. Environmental Health Dep Water Quality Division Sampled On Attn: Michael Kith Sampled By 1868 East Hazelton Ave. Received On Stockton, CA 95205 Matrix Description : Wellhead 9415 W. Goshen Avenue Project : 13631 Castle Rd Manteca CA 95336 Stockton, CA 95215 Sample Result - Inorganic April 30, 2021-09:10 Aldara Salinas April 30, 2021-09:45 Drinking Water Constituent Result PQL Units MCL/AL Sample Preparation Method Date/ID Sample Analysis Method Date/ID General Mineral 3442 Empresa Drive, Suite D 9415 W. Goshen Avenue Santa Paula, CA 93060 Stockton, CA 95215 Chico, CA 95926 San Luis Obispo, CA 93401 Total Hardness as CaCO3 52.3 ).5 mg/L TEL: (805)783-2940 200.7 05/04/21:204881 200.7 05/04/21.206620 Calcium 16 1 mg/L CA ELAP Certification No. 1563 200.7 05/04/21:204881 200.7 05/04/21.206620 Magnesium 3 1 Ing/L 200.7 05/04/21:204881 200.7 05/04/21:206620 otassium 3 1 mg/L 200.7 05/04/21:204881 200.7 05/04/21:206620 Sodium 48 1 mg/L 200.7 05/04/21:204881 200.7 05/04/21:206620 Total Cations 3.2 --- meq/L 200.7 05/04/21:204881 200.7 05/04/21:206620 Boron 0.2 0.1 mg/L 200.7 05/04/21:204881 200.7 05/05/21:206672 Copper ND 10 ug/L 10002 200.7 05/04/21:204881 200.7 05/04/21:206620 Iron ND 30 ug/L 3002 200.7 05/04/21:204881 200.7 05/04/21:206620 Manganese 30 10 ug/L 502 200.7 05/04/21:204881 200.7 05/04/21:206620 Inc ND 20 ug/L 200.7 05/04/21:204881 200.7 05/04/21:206620 SAR 2.9 0.1 -- 200.7 05/04/21:204881 200.7 05/04/21:206620 Total Alkalinity (as CaCO3) 120 10 mg/L 2320B 05/09/21:205083 2320B 05/10/21:206889 ydroxide as OH ND 10 mg/L 2320B 05/09/21:205083 2320E 05/10/21:206889 Carbonate as CO3 ND 10 mg/L 2320E 05/09/21:205083 2320E 05/10/21:206889 Bicarbonate as HCO3 150 10 mg/L 2320B 05/09/21:205083 2320B 05/10/21:206889 Sulfate 12.0 0.5 mg/L 5002 300.0 05/17/21:205381 300.0 05/18/21:207341 hloride 13 1 IFIg/L 5002 3000 - 05/17/21:105381- 300.0 - 05/18/21:207341 itrate as NO3 12.8 0.9 mg/L 45 450ONO3F 05/04/21:204889 450ONO3F 05/04/21:206594 Nitrite as N ND 0.2 mg/L 1 300.0 05/17/21:205381 300.0 05/18/21:207341 Nitrate + Nitrite as N 2.9 0.2 mg/L 10 450ONO3F 05/04/21:204889 450ONO3F 05/04/21:206594 Fluoride 0.2 0.1 mg/L 2 300.0 05/17/21:205381 300.0 05/18/21:207341 Total Anions 3.3 --- meq/L 2320E 05/09/21:205083 2320E 05/10/21:206889 H (Field) 7.3 -- units 4500-H B 04/30/21:204807 04/30/21:206461 Specific Conductance 328 1 umhos/cm 16002 2510E 05/18/21:205467 2510E 05/18/21:207331 Total Dissolved Solids 280 20 mg/L 10002 2540CE 05/04/21:204861 2540C 05/05/21:206626 AS Extraction ND 0.1 mg/L 0.52 5540C 05/01/21:205222 5540C 05/12/21:207000 Aggressiveness Index 11.0 1 -- 4500-H B 04/30/21:204807 04/30/21:206461 angelier Index (20°C) -0.9 1 -- 4500-H B 04/30/21:204807 04/30/21:206461 Nitrate Nitrogen 1 2.9 1 0.2 1 mg/L 1 10 1 450ONO3F 05/04/21:204889 1 450ONO3F 05/04/21:206594 ND--Non-Detected. PQL=Practical Quantitation Limit. • PQL adjusted for dilution. MCL = Maximum Contamination Level. 2 - Secondary Standard. 3 - CDPH Notification Level. AL = Regulatory Action Level. Page 3 of 9 Corporate Offices & Laboratory Office & Laboratory Office & Laboratory Office & Laboratory Office & Laboratory 853 Corporation Street 2500 Stagecoach Road 563 E. Lindo Avenue 3442 Empresa Drive, Suite D 9415 W. Goshen Avenue Santa Paula, CA 93060 Stockton, CA 95215 Chico, CA 95926 San Luis Obispo, CA 93401 Visalia, CA 93291 TEL: (805)392-2000 TEL: (209)942-0182 TEL: (530)343-5818 TEL: (805)783-2940 TEL: (559)734-9473 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 FAX: (209)942-0423 FAX: (530)343-3807 FAX: (805)783-2912 FAX: (559)734-8435 CA ELAP Certification No. 1573 CA ELAP Certification No. 1563 CA ELAP Certification No. 2670 CA ELAP Certification No. 2775 CA ELAP Certification No. 2810