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March 2, 2021 Lab ID : STK2131947-001 <br />San Joaquin Co. Environmental Health Dep <br />Water Quality Division <br />Attn: Michael Kith <br />1868 East Hazelton Ave. <br />Stockton, CA 95205 <br />Description : Wellhead <br />Project : 18801 Sierra View Rd.Clements CA <br />Customer ID :3-17919 <br />Sampled On : February 8, 2021-13:45 <br />Sampled By : Francisco Garcia Rui <br />Received On : February 8, 2021-14:30 <br />Matrix : Drinking Water <br />Sample Result - Inorganic <br />Constituent <br />Result <br />PQL <br />Units <br />MCL/AL <br />Sample Preparation <br />Method Date/ID <br />Sample Analysis <br />Method Date/ID <br />General Mineral <br />Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 FAX: (209)942-0423 <br />CA ELAP Certification No. 1573 <br />CA ELAP Certification No. 1563 <br />Total Hardness as CaCO3 <br />166 <br />2.5 <br />mg/L <br />200.7 02/10/21:201444 <br />200.7 02/10/21:202083 <br />Calcium <br />32 <br />1 <br />mg/L <br />200.7 02/10/21:201444 <br />200.7 02/10/21:202083 <br />Magnesium <br />21 <br />1 <br />mg/L <br />200.7 02/10/21:201444 <br />200.7 02/10/21:202083 <br />Potassium <br />7 <br />1 <br />mg/L <br />200.7 02/10/21:201444 <br />200.7 02/10/21:202083 <br />Sodium <br />16 <br />1 <br />mg/L <br />200.7 02/10/21:201444 <br />200.7 02/10/21:202083 <br />Total Cations <br />4.2 <br />--- <br />meq/L <br />200.7 02/10/21:201444 <br />200.7 02/10/21:202083 <br />Boron <br />ND <br />0.1 <br />mg/L <br />200.7 02/10/21:201444 <br />200.7 02/10/21:202083 <br />Copper <br />ND <br />10 <br />ug/L <br />10002 <br />200.7 02/10/21:201444 <br />200.7 02/10/21:202083 <br />ron <br />ND <br />30 <br />ug/L <br />3002 <br />200.7 02/10/21:201444 <br />200.7 02/10/21:202083 <br />Manganese <br />ND <br />10 <br />ug/L <br />502 <br />200.7 02/10/21:201444 <br />200.7 02/10/21:202083 <br />Zinc <br />ND <br />20 <br />ug/L <br />200.7 02/10/21:201444 <br />200.7 02/10/21:202083 <br />SAR <br />0.5 <br />0.1 <br />-- <br />200.7 02/10/21:201444 <br />200.7 02/10/21:202083 <br />Total Alkalinity (as <br />120 <br />10 <br />mg/L <br />2320E 02/11/21:201502 <br />2320E 02/11/21:202087 <br />CaCO3) <br />Hydroxide as OH <br />ND <br />10 <br />mg/L, <br />2320E 02/11/21:201502 <br />2320E 02/11/21:202087 <br />Carbonate as CO3 <br />ND <br />10 <br />mg/L <br />2320B 02/11/21:201502 <br />2320B 02/11/21:202087 <br />Bicarbonate as HCO3 <br />150 <br />10 <br />mg/L <br />2320E 02/11/21:201502 <br />2320E 02/11/21:202087 <br />Sulfate <br />13.5 <br />0.5 <br />mg/L <br />5002 <br />300.0 02/09/21:201408 <br />300.0 02/09/21:202017 <br />Chloride <br />44 <br />1 <br />mg/L <br />5002 <br />300.0 02/09/21:201408 <br />300.0 02/09/21:202017 <br />Nitrate as NO3 <br />0.5 <br />0.4 <br />mg/L <br />45 <br />300.0 02/09/21:201408 <br />300.0 02/09/21:202017 <br />Nitrite as N <br />ND <br />0.2 <br />mg/L <br />1 <br />300.0 02/09/21:201408 <br />300.0 02/09/21:202017 <br />Nitrate + Nitrite as N <br />0.1 <br />0.1 <br />mg/L <br />10 <br />300.0 02/09/21:201408 <br />300.0 02/09/21:202017 <br />Fluoride <br />0.1 <br />0.1 <br />mg/L <br />2 <br />300.0 02/09/21:201408 <br />300.0 02/09/21:202017 <br />otal Anions <br />4.0 <br />--- <br />meq/L <br />2320B 02/11/21:201502 <br />2320E 02/11/21:202087 <br />H (Field) <br />7.7 <br />-- <br />units <br />4500-H B 02/08/21:201674 <br />4500HB 02/08/21:202285 <br />Specific Conductance <br />429 <br />1 <br />umhos/cm <br />16002 <br />2510E 02112/21:201562 <br />2510B 02/12/21:202121 <br />Total Dissolved Solids <br />310 <br />20 <br />mg/L <br />10002 <br />2540CE 02110/21:201489 <br />25400 02/11/21:202052 <br />BAS Extraction <br />0.1 <br />0.1 <br />mg/L <br />0.52 <br />5540C 02/10/21:201755 <br />5540C 02/10/21:202358 <br />Aggressiveness Index <br />11.7 <br />1 <br />-- <br />4500-H B 02/08/21:201674 <br />4500HB 02/08/21:202285 <br />angelier Index (20°C) <br />-0.2 <br />1 <br />-- <br />4500-H B 02/08/21:201674 <br />4500HB 02/08/21:202285 <br />Nitrate Nitrogen <br />0.1 <br />0.1 <br />mg/L <br />10 <br />300.0 02/09/21:201408 <br />1 300.0 02/09/21:202017 <br />ND=Non-Detected. PQL=Practical Quantitation Limit. * PQL adjusted for dilution. <br />MCL = Maximum Contamination Level. 2 - Secondary Standard. 3 - CDPH Notification Level. AL = Regulatory Action Level. <br />Corporate Offices & Laboratory Office & Laboratory Office & Laboratory <br />563 E. Undo Avenue 3442 Empresa Drive, Suite D <br />Chico, CA 95926 San Luis Obispo, CA 93401 <br />TEL: (530)343-5818 TEL: (805)783-2940 <br />FAX: (530)343-3807 FAX: (805)783-2912 <br />CA ELAP Certification No. 2670 CA ELAP Certification No. 2775 <br />Office & Laboratory <br />853 Corporation Street <br />2500 Stagecoach Road <br />Santa Paula, CA 93060 <br />Stockton, CA 95215 <br />TEL: (805)392-2000 <br />TEL: (209)942-0182 <br />Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 FAX: (209)942-0423 <br />CA ELAP Certification No. 1573 <br />CA ELAP Certification No. 1563 <br />Page 3 of 9 <br />Office & Laboratory <br />9415 W. Goshen Avenue <br />Visalia, CA 93291 <br />TEL: (559)734-9473 <br />FAX: (559)734-8435 <br />CA ELAP Certification No. 2810 <br />