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March 16, 2022 Lab ID : STK2232362-001 <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 : 10595 E. Hwy 26,Stockton <br />Customer ID :3-17919 <br />Sampled On :February 17,2022-10:11 <br />Sampled By : Frank Giardi <br />Received On : February 17, 2022-11:03 <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 />108 <br />-.5 <br />mg/L <br />TEL: (805)783-2940 <br />200.7 02/21/22:202005 <br />'()(i.7 02/21/22:202750 <br />Calcium <br />25 <br />1 <br />mg/L <br />CA ELAP Certification No. 1563 <br />200.7 02/21/22:202005 <br />200.7 02/21/22:202750 <br />Magnesium <br />I I <br />I <br />mg/L <br />200.7 02/21/22:202005 <br />200.7 02/21/22:202750 <br />Potassium <br />7 <br />1 <br />mg/L <br />200.7 02/21/22:202005 <br />200.7 02/21/22:202750 <br />Sodium <br />15 <br />1 <br />mg/L <br />200.7 02/21/22:202005 <br />200.7 02/2122:202750 <br />Total Cations <br />3.0 <br />--- <br />meq/L <br />200.7 0221/22:202005 <br />200.7 02/2122:202750 <br />Boron <br />ND <br />0.1 <br />mg/L <br />200.7 02/21/22:202005 <br />200.7 02/2122:202750 <br />Copper <br />ND <br />10 <br />ug/L <br />10002 <br />200.7 0221/22:202005 <br />200.7 02/2122:202750 <br />Iron <br />440 <br />30 <br />ug/L <br />3002 <br />200.7 02/21/22:202005 <br />200.7 02/21/22:202750 <br />Manganese <br />80 <br />10 <br />ug/L <br />502 <br />200.7 0221/22:202005 <br />200.7 02/2122:202750 <br />Inc <br />ND <br />20 <br />ug/L <br />200.7 022122:202005 <br />200.7 02/2122:202750 <br />SAR <br />0.6 <br />0.1 <br />-- <br />200.7 02/21/22:202005 <br />200.7 02/2122:202750 <br />Total Alkalinity (as CaCO3) <br />110 <br />10 <br />mg/L <br />2320B 02/27/22:202253 <br />2320B 02/2722:203023 <br />Hydroxide as OH <br />ND <br />10 <br />mg/l. <br />2320E 02/27/22:202253 <br />2320B 02/2722:203023 <br />Carbonate as CO3 <br />ND <br />10 <br />mg/L <br />2320E 02/27/22:202253 <br />2320E 02/2722:203023 <br />Bicarbonate as HCO3 <br />140 <br />10 <br />mg/L <br />2320E 022722:202253 <br />23208 02/2722:203023 <br />Sulfate <br />4.9 <br />0.5 <br />mg/L <br />500' <br />300.0 02/18/22:201895 <br />300.0 02/18/22:202556 <br />Chloride <br />6 <br />1 <br />mg/L <br />5002 <br />300.0 02/18/22:201895 <br />300.0 02/1822:202556 <br />Nitrate as NO3 <br />13.5 <br />0.4 <br />mg/L <br />45 <br />300.0 02/1822:201895 <br />300.0 02/1822:202556 <br />Nitrite as N <br />ND <br />0.2 <br />mg/L <br />1 <br />300.0 02/18/22:201895 <br />300.0 02/18/22:202556 <br />Nitrate + Nitrite as N <br />3.0 <br />0.1 <br />mg/L <br />10 <br />300.0 02/18/22:201895 <br />300.0 02/18/22:202556 <br />Fluoride <br />ND <br />0.1 <br />mg/L <br />2 <br />300.0 02/18/22:201895 <br />300.0 02/1822:202556 <br />Total Anions <br />2.8 <br />--- <br />meq/L <br />2320B 02/27/22:202253 <br />2320B 02/27/22:203023 <br />H (Field) <br />7.03 <br />--- <br />units <br />4500-H B 02/17/22:201965 <br />4500HB 02/17/22:202594 <br />Specific Conductance <br />270 <br />1 <br />umhos/cm <br />16002 <br />2510B 0222/22:202049 <br />2510B 02/22/22:202687 <br />Total Dissolved Solids <br />200 <br />20 <br />mg/L <br />10002 <br />2540CE 02/21/22:202002 <br />25400 022222:202708 <br />BAS Extraction <br />ND <br />0.1 <br />mg/L <br />0.52 <br />5540C 02/18/22:201974 <br />55400 02/18/22:202597 <br />Aggressiveness Index <br />10.9 <br />1 <br />-- <br />4500-H B 02/17/22:201965 <br />4500HB 02/1722:202594 <br />angelier Index (20°C) <br />-1.0 <br />1 <br />-- <br />4500-H B 02/17/22:201965 <br />4500HB 02/17/22:202594 <br />itrate Nitrogen <br />1 3.0 <br />1 0.1 <br />mg/L <br />1 10 <br />1 300.0 02/18/22:201895 <br />1 300.0 02/1822:202556 <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 />Page 3 of 9 <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. 2810 <br />