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December 30, 2021 Lab ID : STK2157908-001 <br />Customer ID : 3-17919 <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 : 10027 Copperopolis, Stockton <br />Sampled On : December 15,2021-09:00 <br />Sampled By : Michael Suszycki <br />Received On :December 15,2021-09:35 <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 />101 <br />2.5 <br />mg/L <br />200.7 12/20/21:214622 <br />200.7 12/20/21:219657 <br />Calcium <br />24 <br />1 <br />mg/L <br />200.7 12/20/21:214622 <br />200.7 12/20/21:219657 <br />Magnesium <br />10 <br />1 <br />mg/L <br />200.7 12/20/21:214622 <br />200.7 12/20/21:219657 <br />Potassium <br />6 <br />1 <br />mg/L <br />200.7 12/20/21:214622 <br />200.7 12/20/21:219657 <br />Sodium <br />17 <br />1 <br />mg/L <br />200.7 12/20/21:214622 <br />200.7 12/20/21:219657 <br />Total Cations <br />2.9 <br />--- <br />meq/L <br />200.7 12/20/21:214622 <br />200.7 12/20/21:219657 <br />Boron <br />ND <br />0.1 <br />mg/L <br />200.7 12/20/21:214622 <br />200.7 12/20/21:219657 <br />Copper <br />ND <br />10 <br />ug/L <br />10002 <br />200.7 12/20/21:214622 <br />200.7 12/20/21:219657 <br />Iron <br />50 <br />30 <br />ug/L <br />3002 <br />200.7 12/20/21:214622 <br />200.7 12/20/21:219657 <br />anganese <br />ND <br />t0 <br />ug/L <br />502 <br />200.7 12/20/21:214622 <br />200.7 12/20/21:219657 <br />Inc <br />20 <br />20 <br />ug/L <br />200.7 12/20/21:214622 <br />200.7 12/20/21:219657 <br />SAR <br />0.7 <br />0,1 <br />-- <br />200.7 12/20/21:214622 <br />200.7 12/20/21:219657 <br />Total Alkalinity (as CaCO3) <br />120 <br />10 <br />mg/L., <br />2320B 12/21/21:214686 <br />2320B 12/21/21:219747 <br />Hydroxide as OH <br />ND <br />10 <br />mg/L <br />2320E 12/21/21:214686 <br />2320B 12/21/21:219747 <br />arbonate as CO3 <br />ND <br />10 <br />mg/L <br />2320E 12/21/21:214686 <br />2320B 12/21/21:219747 <br />Bicarbonate as HCO3 <br />140 <br />10 <br />mg/L <br />2320B 12/21/21:214686 <br />2320E 12/21/21:219747 <br />Sulfate <br />11.2 <br />0.5 <br />mg/L. <br />5002 <br />300.0 12/16/21.214499 <br />300.0 12/16/21:219610 <br />Chloride <br />6 <br />1 <br />mg/L.. <br />5002 <br />300.0 12/16/21:214499 <br />300.0 12/16/21219610 <br />Nitrate as NO3 <br />3.7 <br />0.4 <br />mg/L <br />45 <br />300.0 12/16/21:214499 <br />300.0 12/16/21:219610 <br />itrite as N <br />ND <br />0.2 <br />mg/L <br />1 <br />300.0 12/16/21:214499 <br />300.0 12/16/21:219610 <br />Nitrate + Nitrite as N <br />0.8 <br />0.1 <br />mg/L <br />10 <br />300.0 12/16/21:214499 <br />300.0 12/16/21:219610 <br />Fluoride <br />ND <br />0.1 <br />mg/L <br />2 <br />300.0 12/16/21.214499 <br />300.0 12/16/21:219610 <br />Total Anions <br />2.8 <br />--- <br />meq/L <br />2320E 12/21/21:214686 <br />2320B 12/21/21:219747 <br />H (Field) <br />7.85 <br />--- <br />units <br />4500-H B 12/15/21:214595 <br />4500HB 12/15/21:219567 <br />Specific Conductance <br />286 <br />1 <br />umhos/cm <br />16002 <br />25108 12/20/21:214594 <br />2510B 12/2021.219566 <br />Total Dissolved Solids <br />210 <br />20 <br />mg/L <br />10002 <br />2540CE 12/17/21:214558 <br />2540C 12/20/21:219598 <br />AS Extraction <br />ND <br />0.1 <br />mg/L <br />0.52 <br />5540C 12/17/21:214865 <br />5540C 12/17/21:219886 <br />Aggressiveness Index <br />11.7 <br />1 <br />-- <br />4500-H B 12/15/21:214595 <br />4500HB 12/15/21:219567 <br />angelier Index (20°C) <br />-0.1 <br />1 <br />-- <br />4500-H B 12/15/21:214595 <br />4500HB 12/15/21:219567 <br />itrate Nitrogen 1 <br />0.8 1 <br />0.1 1 <br />mg/L 1 <br />10 1 <br />300.0 12/16/21:214499 1 <br />300.0 12/16/21:219610 <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 />