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ENVIRONMENTAL <br /> Analytical Chemists <br /> June 19, 2019 Lab ID : STK1937486-001 <br /> Customer ID : 3-17919 <br /> San Joaquin Co.Environmental Health Dep <br /> Water Quality Division Sampled On : May 23, 2019-15:20 <br /> Attn: Michael Kith Sampled By : Aaron Gooderham <br /> 1868 East Hazelton Ave. Received On : May 23, 2019-15:20 <br /> Stockton, CA 95205 Matrix : Drinking Water <br /> Description : Wellhead <br /> Project : 25795 Bird Rd. Tracy <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 257 -- mg/L 200.7 05/28/19:205946 200.7 05/29/19:207975 <br /> Calcium 65 1 mg/L 200.7 05/28/19:205946 200.7 05/29/19:207975 <br /> Magnesium 23 1 mg/L 200.7 05/28/19:205946 200.7 05/29/19:207975 <br /> Potassium 2 1 mg/L 200.7 05/28/19:205946 200.7 05/29/19:207975 <br /> Sodium 90 1 mg/L 200.7 05/28/19:205946 200.7 05/29/19:207975 <br /> Total Cations 9.1 -- meq/L 200.7 05/28/19:205946 200.7 05/29/19:207975 <br /> oron 0.7 0.1 mg/L 200.7 05/28/19:205946 200.7 05/29/19:207975 <br /> Copper 40 10 ug/L 10002 200.7 05/28/19:205946 200.7 05/29/19:207975 <br /> Iron 1080 30 ug/L 3002 200.7 05/28/19:205946 200.7 05/29/19:207975 <br /> Manganese 90 10 ug/L 502 200.7 05/28/19:205946 200.7 05/29/19:207975 <br /> inc 50 20 ug/L 200.7 05/28/19:205946 200.7 05/29/19:207975 <br /> SAR 2.4 -- __ 200.7 05/28/19:205946 200.7 05/29/19:207975 <br /> Total Alkalinity(as 100 10 mg/L 2320B 05/30/19:206028 2320B 05/30/19:208067 <br /> CaCO3) <br /> Hydroxide as OH ND 10 mg/L 2320B 05/30/19:206028 2320E 05/30/19:208067 <br /> Carbonate as CO3 ND 10 mg/L 2320E 05/30/19:206028 2320B 05/30/19:208067 <br /> icarbonate as HCO3 120 10 mg/L 2320B 05/30/19:206028 2320E 05/30/19:208067 <br /> Sulfate 178 0.5 mg/L 5002 300.0 06/10/19:206509 300.0 06/11/19:208645 <br /> Chloride 121 5* mg/L 5002 300.0 06/10/19:206509 300.0 06/11/19:208645 <br /> Nitrate as NO3 31.9 0.9 mg/L 45 450ONO3F 05/24/19:205874 450ONO3F 05/24/19:207921 <br /> /trite as N ND 0.1 mg/L I 450ONO2F 05/24/19:205875 450ONO3F 05/24/19:207920 <br /> itrate+Nitrite as N 7.2 0.2 mg/L 10 450ONO3F 05/24/19:205874 450ONO3F 05/24/19:207921 <br /> Fluoride 0.1 0.1 mg/L 2 300.0 06/10/19:206509 300.0 06/11/19:208645 <br /> Total Anions 9.6 -- meq/L 2320B 05/30/19:206028 2320B 05/30/19:208067 <br /> H(Field) 7.9 -- units 4500-11 B 05/23/19:205916 450OHD 05/23/19:207830 <br /> Specific Conductance 1010 1 umhos/cm 16002 25108 05/28/19:205955 2510B 05/28/19:207879 <br /> Total Dissolved Solids 610 20 mg/L 10002 2540CE 05/28/19:205936 25400 05/29/19:207893 <br /> AS Screen Negative 0.1 mg/L 0.52 5540C 05/24/19:205933 5540C 05/24/19:207846 <br /> Aggressiveness Index 12.1 -- -- 4500-H B 05/23/19:205916 4500HB 05/23/19:207830 <br /> angelier Index(20°C) 0.2 -- - 4500-H D 05/23/19:205916 4500HB 05/23/19:207830 <br /> Nitrate Nitrogen 7.2 1 0.2 1 mg/L 1 10 1 450ONO3F 05/24/19:205874 450ONO3F 05/24/19:207921 <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 8 <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 /> I <br />