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May 31, 2022 Lab ID : STK2235613-001 Customer ID : 3-17919 San Joaquin Co. Environmental Health Dep Sampled On : April 22, 2022-08:50 Sampled By : Francisco Garcia Rui Received On : April 22, 2022-09:27 Water Quality Division Attn: Steven Shih 1868 East Hazelton Ave. Stockton, CA 95205 Matrix : Drinking Water Description : Wellhead Project : 5433 E. Harney Lane, Lodi, CA 95240 This Page is to be Stamped Sample Result - Inorganic Sample Preparation Sample Analysis Constituent Result PQL Units MCL/AL Method Date/ID Method Date/ID General Mineral Total Hardness as CaCO3 91.9 2.5 mg/L 200.7 04/25/22:204545 200.7 04/26/22:205971 Calcium 22 1 mg/L 200.7 04/25/22:204545 200.7 04/26/22:205971 Magnesium 9 1 mg/L 200.7 04/25/22:204545 200.7 04/26/22:205971 Potassium 3 1 mg/L 200.7 04/25/22:204545 200.7 04/26/22:205971 Sodium 16 1 mg/L 200.7 04/25/22:204545 200.7 04/26/22:205971 Total Cations 2.6 --- meq/L 200.7 04/25/22:204545 200.7 04/26/22:205971 Boron ND 0.1 mg/L 200.7 04/25/22:204545 200.7 04/25/22:205903 Copper ND 10 ug/L 10002 200.7 04/25/22:204545 200.7 04/25/22:205903 Iron ND 30 ug/L 3002 200.7 04/25/22:204545 200.7 04/26/22:205971 Manganese ND 10 ug/L 502 200.7 04/25/22:204545 200.7 04/25/22:205903 Zinc 480 20 ug/L 200.7 04/25/22:204545 200.7 04/26/22:205971 SAR 0.7 0.1 -- 200.7 04/25/22:204545 200.7 04/26/22:205971 Total Alkalinity (as CaCO3) 90 10 mg/L 2320B 05/04/22:204929 2320B 05/05/22:206425 Hydroxide as OH ND 10 mg/L 2320B 05/04/22:204929 2320B 05/05/22:206425 Carbonate as CO3 ND 10 mg/L 2320B 05/04/22:204929 2320B 05/05/22:206425 Bicarbonate as HCO3 110 10 mg/L 2320B 05/04/22:204929 2320B 05/05/22:206425 Sulfate 10.2 0.5 mg/L 5002 300.0 05/11/22:205176 300.0 05/12/22:206818 Chloride 16 1 mg/L 5002 300.0 05/11/22:205176 300.0 05/12/22:206818 Nitrate as NO3 5.3 0.2 mg/L 45 4500NO3F 04/26/22:204578 4500NO3F 04/26/22:205956 Nitrite as N ND 0.1 mg/L 1 4500NO2B 04/23/22:204595 4500NO2B 04/23/22:205954 Nitrate + Nitrite as N 1.2 0.2 mg/L 10 4500NO3F 04/26/22:204578 4500NO3F 04/26/22:205956 Fluoride 0.1 0.1 mg/L 2 300.0 05/11/22:205176 300.0 05/12/22:206818 Total Anions 2.6 --- meq/L 2320B 05/04/22:204929 2320B 05/05/22:206425 pH (Field) 7.5 -- units 4500-H B 04/22/22:204498 4500HB 04/22/22:205836 Specific Conductance 277 1 umhos/cm 16002 2510B 05/10/22:205128 2510B 05/10/22:206650 Total Dissolved Solids 240 20 mg/L 10002 2540CE 04/26/22:204551 2540C 04/27/22:205985 MBAS Extraction ND 0.1 mg/L 0.52 5540C 04/23/22:204511 5540C 04/23/22:205847 Aggressiveness Index 11.2 1 -- 4500-H B 04/22/22:204498 4500HB 04/22/22:205836 Langelier Index (20°C) -0.6 1 -- 4500-H B 04/22/22:204498 4500HB 04/22/22:205836 Nitrate Nitrogen 1.2 0.2 mg/L 10 4500NO3F 04/26/22:204578 4500NO3F 04/26/22:205956 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. Corporate Offices & Laboratory 853 Corporation Street Santa Paula, CA 93060 TEL: (805)392-2000 Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 CA ELAP Certification No. 1573 Office & Laboratory 2500 Stagecoach Road Stockton, CA 95215 TEL: (209)942-0182 FAX: (209)942-0423 CA ELAP Certification No. 1563 Office & Laboratory 563 E. Lindo Avenue Chico, CA 95926 TEL: (530)343-5818 FAX: (530)343-3807 CA ELAP Certification No. 2670 Office & Laboratory 9415 W. Goshen Avenue Visalia, CA 93291 TEL: (559)734-9473 FAX: (559)734-8435 CA ELAP Certification No. 2810 Office & Laboratory 3442 Empresa Drive, Suite D San Luis Obispo, CA 93401 TEL: (805)783-2940 FAX: (805)783-2912 CA ELAP Certification No. 2775 ENVIRONMENTAL AGRICULTURAL Analytical Chemists