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May 18, 2021 Lab ID : STK2136230-001 <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 : 4855 Brunswick Rd <br />Customer ID : 3-17919 <br />Sampled On : May 6, 2021-09:30 <br />Sampled By : Aaron Goodenham <br />Received On : May 6, 2021-13:05 <br />Matrix : Drinking Water <br />Sample Result - Inorganic <br />Constituent <br />Result <br />PQL <br />Units <br />MCUAL <br />Sample Preparation <br />Method Date/ID <br />Sample Analysis <br />Method Date/ID <br />General Mineral <br />Total Hardness as CaCO3 <br />78.0 <br />2.5 <br />mg/L <br />200.7 05/10/21:205125 <br />200.7 05/10/21:206931 <br />Calcium <br />23 <br />1 <br />mg/L <br />200.7 05/10/21:205125 <br />200.7 05/10/21:206931 <br />Magnesium <br />5 <br />1 <br />mg/L <br />200.7 05/10/21:205125 <br />200.7 05/10/21:206931 <br />Potassium <br />3 <br />1 <br />mg/L <br />200.7 05/10/21:205125 <br />200.7 05/10/21:206931 <br />Sodium <br />53 <br />1 <br />mg/L <br />200.7 05/10/21:205125 <br />200.7 05/10/21:206931 <br />Total Cations <br />3.9 <br />--- <br />megAL <br />200.7 05/10/21:205125 <br />200.7 05/10/21:206931 <br />Boron <br />0.2 <br />0.1 <br />mg/L <br />200.7 05/10/21:205125 <br />200.7 05/10/21:206931 <br />Copper <br />ND <br />10 <br />ug/L <br />10002 <br />200.7 05/10/21:205125 <br />200.7 05/10/21:206931 <br />Iron <br />ND <br />30 <br />ug/L <br />3002 <br />200.7 05/10/21:205125 <br />200.7 05/10/21:206931 <br />Manganese <br />10 <br />10 <br />ug/L <br />502 <br />200.7 05/10/21:205125 <br />200.7 05/10/21:206931 <br />Linc <br />ND <br />20 <br />ug/L, <br />200.7 05/10/21:205125 <br />200.7 05/10/21:206931 <br />SAR <br />2.6 <br />0.1 <br />-- <br />200.7 05/10/21:205125 <br />200.7 05/10/21:206931 <br />Total Alkalinity (as CaCO3) <br />130 <br />10 <br />mg/L <br />2320E 05/15/21:205372 <br />2320B 05/16/21:207219 <br />Hydroxide as OH <br />ND <br />10 <br />mg/L <br />2320E 05/15/21:205372 <br />23208 05/16/21:207219 <br />Carbonate as CO3 <br />ND <br />10 <br />mg/L <br />2320E 05/15/21:205372 <br />2320E 05/16/21:207219 <br />Bicarbonate as HCO3 <br />160 <br />10 <br />mg/L <br />23208 05/15/21:205372 <br />2320E 05/16/21:207219 <br />Sulfate <br />18.6 <br />0.5 <br />mg/L <br />5002 <br />300.0 05/07/21:205045 <br />300.0 05/07/21:206925 <br />Chloride <br />II <br />1 <br />mg/L <br />5002 <br />300.0 05/07/21:205045 <br />300.0 05/07/21:206925 <br />Nitrate as NO3 <br />37.5 <br />0.4 <br />mg/L <br />45 <br />300.0 05/07/21:205045 <br />300.0 05/07/21:206925 <br />Nitrite as N <br />ND <br />0.2 <br />mg/L <br />1 <br />300.0 05/07/21:205045 <br />300.0 05/07/21:206925 <br />Nitrate + Nitrite as N <br />8.5 <br />0.1 <br />mg/L <br />10 <br />300.0 05/07/21:205045 <br />300.0 05/07/21:206925 <br />Fluoride <br />0.1 <br />0.1 <br />mg/L <br />2 <br />300.0 05/07/21:205045 <br />300.0 05/07/21:206925 <br />Total Anions <br />3.9 <br />--- <br />meq/L <br />2320B 05/15/21:205372 <br />2320B 05/16/21:207219 <br />pH (Field) <br />7.7 <br />-- <br />units <br />4500-H B 05/06/21:205103 <br />05/06/21:206859 <br />Specific Conductance <br />403 <br />1 <br />umhos/cm <br />16002 <br />2510B 05/17/21:205392 <br />2510B 05/17/21:207233 <br />Total Dissolved Solids <br />290 <br />20 <br />mg/L <br />10002 <br />2540CE 05/11/21:205181 <br />25400 05/12/21:207003 <br />MB AS Extraction <br />ND <br />0.1 <br />mg/L <br />0.52 <br />5540C 05/07/21:205230 <br />5540C 05/07/21:207001 <br />Aggressiveness Index <br />11.6 <br />1 <br />-- <br />4500-H B 05/06/21:205103 <br />05/06/21:206859 <br />Langelier Index (20°C) <br />-0.3 <br />1 <br />-- <br />4500-H B 05/06/21:205103 <br />05/06/21:206859 <br />Nitrate Nitrogen <br />8.5 <br />0.1 <br />mg/L <br />10 <br />300.0 05/07/21:205045 <br />300.0 05/07/21:206925 <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 />853 Corporation Street 2500 Stagecoach Road 563 E. Lindo Avenue <br />Santa Paula, CA 93060 Stockton, CA 95215 Chico, CA 95926 <br />TEL: (805)392-2000 TEL: (209)942-0182 TEL: (530)343-5818 <br />Env FAX: (805)525-4172 / Ag FAX: (805)392-2063 FAX: (209)942-0423 FAX: (530)343-3807 <br />CA ELAP Certification No. 1573 CA ELAP Certification No. 1563 CA FLAP Certification No. 2670 <br />Office & Laboratory <br />3442 Empresa Drive, Suite D <br />San Luis Obispo, CA 93401 <br />TEL: (805)783-2940 <br />FAX: (805)783-2912 <br />CA ELAP Certification No. 2775 <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 />