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April 1, 2022 Lab ID : STK2233729-001 <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 : 1033 Williamson Rd <br />Customer ID :3-17919 <br />Sampled On :March 16,2022-11:00 <br />Sampled By : Aaron Goodenham <br />Received On : March 16, 2022-13:55 <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 />3442 Empresa Drive, Suite D <br />9415 W. Goshen Avenue <br />Santa Paula, CA 93060 <br />Stockton, CA 95215 <br />Chico, CA 95926 <br />San Luis Obispo, CA 93401 <br />Total Hardness as CaCO3 <br />287 <br />2.5 <br />mg/L <br />TEL: (805)783-2940 <br />200.7 03/24/22:203271 <br />200.7 03/24/22:204282 <br />Calcium <br />87 <br />1 <br />mg/L <br />CA ELAP Certification No. 1563 <br />200.7 03/24/22:203271 <br />200.7 03/24/22:204282 <br />Magnesium <br />17 <br />1 <br />mg/L <br />200.7 03/24/22:203271 <br />200.7 03/24/22:204282 <br />Potassium <br />4 <br />1 <br />mg/L <br />200.7 03/24/22:203271 <br />200.7 03/24/22:204282 <br />Sodium <br />297 <br />1 <br />mg/L <br />200.7 03/22/22:203139 <br />200.7 03/22/22:204154 <br />Total Cations <br />18.8 <br />--- <br />meq/L <br />200.7 03/24/22:203271 <br />200.7 03/24/22:204282 <br />Boron <br />0.5 <br />0.1 <br />mg/L <br />200.7 03/24/22:203271 <br />200.7 03/24/22:204282 <br />Copper <br />90 <br />10 <br />ug/L <br />10002 <br />200.7 03/22/22:203139 <br />200.7 03/22/22:204154 <br />Iron <br />90 <br />30 <br />ug/L <br />3002 <br />200.7 03/22/22:203139 <br />200.7 03/22/22:204154 <br />anganese <br />370 <br />10 <br />ug/L <br />502 <br />200.7 03/22/22:203139 <br />200.7 03/22/22:204154 <br />Inc <br />60 <br />20 <br />ug/L <br />200.7 03/22/22:203139 <br />200.7 03/22/22:204154 <br />SAR <br />7.6 <br />0.1 <br />-- <br />200.7 03/24/22:203271 <br />200.7 03/24/22:204282 <br />Total Alkalinity (as CaCO3) <br />120 <br />10 <br />mg/L <br />2320B 03/28/22:203382 <br />2320B 03/29/22:204459 <br />Hydroxide as OH <br />ND <br />10 <br />mg/L <br />2320B 03/28/22:203382 <br />2320B 03/29/22:204459 <br />Carbonate as CO3 <br />ND <br />10 <br />mg/L <br />2320B 03/28/22:203382 <br />2320B 03/29/22:204459 <br />Bicarbonate as HCO3 <br />150 <br />10 <br />mg/L <br />2320B 03/28/22:203382 <br />2320B 03/29/22:204459 <br />Sulfate <br />9.1 <br />0.5 <br />mg/L <br />500'- <br />300.0 03/17/22:202953 <br />300.0 03/17/22:204018 <br />Chloride <br />589 <br />13* <br />mg/L <br />500' <br />300.0 03/17/22:202953 <br />300.0 03/18/22:204018 <br />Nitrate as NO3 <br />ND <br />0.4 <br />mg/L <br />45 <br />300.0 03/17/22:202953 <br />300.0 03/17/22:204018 <br />itrite as N <br />ND <br />0.2 <br />mg/L <br />1 <br />300.0 03/17/22:202953 <br />300.0 03/17/22:204018 <br />Nitrate + Nitrite as N <br />ND <br />0.1 <br />mg/L <br />10 <br />300.0 03/17/22:202953 <br />300.0 03/17/22:204018 <br />Fluoride <br />ND <br />0.1 <br />mg/L <br />2 <br />300.0 03/17/22:202953 <br />300.0 03/17/22:204018 <br />Total Anions <br />19.3 <br />--- <br />meq/L <br />2320B 03/28/22:203382 <br />2320B 03/29/22:204459 <br />H (Field) <br />7.54 <br />--- <br />units <br />4500-H B 03/16/22:203055 <br />4500HB 03/16/22:204000 <br />Specific Conductance <br />2390 <br />1 <br />umhos/cm <br />16002 <br />2510B 03/30/22:203451 <br />2510B 03/30/22:204504 <br />Total Dissolved Solids <br />1440 <br />20 <br />mg/L <br />10002 <br />2540CE 03/17/22:202954 <br />25400 03/18/22:203944 <br />BAS Extraction <br />ND <br />0.1 <br />mg/L <br />0.52 <br />5540C 03/18/22:203227 <br />55400 03/18/22:204185 <br />Aggressiveness Index <br />12.0 <br />1 <br />-- <br />4500-H B 03/16/22:203055 <br />4500HB 03/16/22:204000 <br />Langelier Index (20°C) <br />0.03 <br />1 <br />-- <br />4500-H B 03/16/22:203055 <br />4500HB 03/16/22:204000 <br />[Nitrate Nitrogen <br />ND <br />0.1 <br />m /L <br />10 <br />300.0 03/17/22:202953 <br />300.0 03/17/22:204018 <br />ND=Non-Detected. POL=Practical <br />Ouantitation Limit. * POL adiusted for dilution. <br />MCL = Maximum Contamination Level. 2 - Secondary Standard. 3 - CDPH Notification Level. AL = Regulatory Action Level. <br />Page 3 of 10 <br />Corporate Offices & Laboratory <br />Office & Laboratory <br />Office & Laboratory <br />Office & Laboratory <br />Office & Laboratory <br />853 Corporation Street <br />2500 Stagecoach Road <br />563 E. Lindo Avenue <br />3442 Empresa Drive, Suite D <br />9415 W. Goshen Avenue <br />Santa Paula, CA 93060 <br />Stockton, CA 95215 <br />Chico, CA 95926 <br />San Luis Obispo, CA 93401 <br />Visalia, CA 93291 <br />TEL: (805)392-2000 <br />TEL: (209)942-0182 <br />TEL: (530)343-5818 <br />TEL: (805)783-2940 <br />TEL: (559)734-9473 <br />Env FAX: (805)525-4172 /Ag FAX: (805)392-2063 FAX: (209)942-0423 <br />FAX: (530)343-3807 <br />FAX: (805)783-2912 <br />FAX: (559)734-8435 <br />CA ELAP Certification No. 1573 <br />CA ELAP Certification No. 1563 <br />CA ELAP Certification No. 2670 <br />CA ELAP Certification No. 2775 <br />CA ELAP Certification No. 281 <br />