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•OAGRICULTURAL <br /> Analytical Chemists <br /> August 25, 2021 Lab ID : STK2151151-001 <br /> Customer 1D : 3-17919 <br /> San Joaquin Co. Environmental Health Dep <br /> Water Quality Division Sampled On : August 5, 2021-11:30 <br /> Attn: Michael Kith Sampled By : Aaron Gooderham <br /> 1868 East Hazelton Ave. Received On : August 5, 2021-13:37 <br /> Stockton, CA 95205 Matrix : Drinking Water <br /> Description : Wellhead <br /> Project : 19113 Allen Road <br /> Sample Result - Inorganic <br /> Constituent Result PQL Units MCL/AL Sample Preparation Sample Analysis <br /> Method Date/ID Method Date/ID <br /> General Mineral <br /> Total Hardness as CaCO3 77.8 2.5 mg/I.. 200.7 08/06/21:208965 200.7 08/06/21:212136 <br /> Calcium 18 1 mg/L 200.7 08/06/21:208965 200.7 08/06/21:212136 <br /> Magnesium 8 1 mg/L 200.7 08/06/21:208965 200.7 08/06/21:212136 <br /> Potassium 4 1 mg/L 200.7 08/06/21:208965 200.7 08/06/21:212136 <br /> Sodium 20 1 mg/L 200.7 08/06/21:208965 200.7 08/06/21:212136 <br /> Total Cations 2.5 --- meq/L 200.7 08/06/21:208965 200.7 08/06/21:212136 <br /> Boron 0.2 0.1 mg/L 200.7 08/06/21:208965 200.7 08/06/21:212136 <br /> Copper 40 10 ug/L 10002 200.7 08/06/21:208965 200.7 08/06/21:212136 <br /> Iron 50 30 ug/L 3002 200.7 08/06/21:208965 200.7 08/06/21:212136 <br /> Manganese ND 10 ug/L 502 200.7 08/06/21:208965 200.7 08/06/21:212136 <br /> Zinc ND 20 ug/L 200.7 08/06/21:208965 200.7 08/06/21:212136 <br /> SAR 1.0 0.1 -- 200.7 08/06/21:208965 200.7 08/06/21:212136 <br /> Total Alkalinity(as CaCO3) 70 10 mg/I. 2320E 08/15/21:209314 2320E 08/15/21:212461 <br /> Hydroxide as OH ND 10 mg/L 2320B 08/15/21:209314 2320E 08/15/21:212461 <br /> Carbonate as CO3 ND 10 mg/L 2320B 08/15/21:209314 2320B 08/15/21:212461 <br /> Bicarbonate as HCO3 90 10 mg/L 2320B 08/15/21:209314 2320B 08/15/21:212461 <br /> Sulfate 7.6 0.5 mg/L 5002 300.0 08/06/21:208972 300.0 08/07/21:212315 <br /> Chloride 12 1 mg/L 5002 300.0 08/06/21:208972 300.0 08/07/21:212315 <br /> Nitrate as NO3 23.7 0.4 mg/L 45 300.0 08/06/21:208972 300.0 08/07/21:212315 <br /> itrite as N ND 0.2 mg/L 1 300.0 08/06/21:208972 300.0 08/07/21:212315 <br /> Nitrate+Nitrite as N 5.3 0.1 mg/L 10 300.0 08/06/21:208972 300.0 08/07/21:212315 <br /> Fluoride 0.2 0.1 mg/L 2 300.0 08/06/21:208972 300.0 08/07/21:212315 <br /> Total Anions 2.4 --- meq/L 2320E 08/15/21:209314 2320B 08/15/21:212461 <br /> H(Field) 7.9 -- units 4500-H B 08/05/21:209016 4500HB 08/05/21:212145 <br /> Specific Conductance 254 1 umhos/cm 16002 2510B 08/20/21:209569 2510B 08/20/21:212900 <br /> Total Dissolved Solids 210 20 mg/L 10002 2540CE 08/10/21:209102 25400 08/11/21:212354 <br /> AS Extraction ND 0.1 mg/L 0.52 55400 08/06/21:209085 5540C 08/06/21:212239 <br /> Aggressiveness Index 11.4 1 -- 4500-H B 08/05/21:209016 4500HB 08/05/21:212145 <br /> angelier Index(20°C) -0.4 1 -- 4500-H B 08/05/21:209016 4500HB 08/05/21:212145 <br /> Nitrate Nitrogen 5.3 0.1 mg/L 10 300.0 08/06/21:208972 1 300.0 08/07/21:212315 <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 Office&Laboratory Office&Laboratory Office&Laboratory Office&Laboratory <br /> 853 Corporation Street 2500 Stagecoach Road 563 E.Lindo Avenue 3442 Empresa Drive,Suite D 9415 W.Goshen Avenue <br /> Santa Paula,CA 93060 Stockton,CA 95215 Chico,CA 95926 San Luis Obispo,CA 93401 Visalia,CA 93291 <br /> TEL:(805)392-2000 TEL:(209)942-0182 TEL:(530)343-5818 TEL:(805)783-2940 TEL:(559)734-9473 <br /> Env FAX:(805)525-4172/Ag FAX:(805)392-2063 FAX:(209)942-0423 FAX:(530)343-3807 FAX:(805)783-2912 FAX:(559)734-8435 <br /> CA ELAP Certification No.1573 CA ELAP Certification No.1563 CA ELAP Certification No.2670 CA ELAP Certification No.2775 CA ELAP Certification No.2810 <br />