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c� ENVIRONMENTAL- Analytical Chemists August 25, 2021 Lab ID : STK2150747-001 Customer ID : 3-17919 San Joaquin Co.Environmental Health Dep Water Quality Division Sampled On : July 29, 2021-10:30 Attn: Michael Kith Sampled By : Aaron Gooderman 1868 East Hazelton Ave. Received On : July 29, 2021-14:52 Stockton, CA 95205 Matrix : Drinking Water Description : Wellhead Project : 9401 Biederman Sample Result- Inorganic Constituent Result PQL Units MCL/AL Sample Preparation Sample Analysis Method Date/ID Method Date/ID General Mineral Total Hardness as CaCO3 228 2.5 mg/L 200.7 08/03/21:208800 200.7 08/03/21:211926 Calcium 47 1 mg/L 200.7 08/03/21:208800 200.7 08/03/21:211926 Magnesium 27 1 mg/L 200.7 08/03/21:208800 200.7 08/03/21:211926 Potassium 5 1 mg/L 200.7 08/03/21:208800 200.7 08/03/21:211926 Sodium 25 1 mg/L 200.7 08/03/21:208800 200.7 08/03/21:211926 Total Cations 5.8 --- meq/]L 200.7 08/03/21:208800 200.7 08/03/21:211926 Boron 0.1 0.1 mg/L 200.7 08/03/21:208800 200.7 08/03/21:211926 Copper 120 10 ug/L 10002 200.7 08/03/21:208800 200.7 08/03/21:211926 Iron 3370 30 ug/L 3002 200.7 08/03/21:208800 200.7 08/03/21:211926 anganese 600 10 ug/L 502 200.7 08/03/21:208800 200.7 08/03/21:211926 Inc 70 20 ug/L 200.7 08/03/21:208800 200.7 08/03/21:211926 SAR 0.7 0.1 - 200.7 08/03/21:208800 200.7 08/03/21:211926 Total Alkalinity(as CaCO3) 180 10 mg/L 2320B 08/09/21:209000 2320B 08/10/21:212311 Hydroxide as OH ND 10 mg/L 2320B 08/09/21:209000 2320B 08/10/21:212311 arbonate as CO3 ND 10 mg/1- 2320B 08/09/21:209000 2320B 08/10/21:212311 Bicarbonate as HCO3 220 10 mg/L 2320B 08/09/21:209000 2320E 08/10/21:212311 Sulfate 12.6 0.5 mg/L 5002 300.0 07/30/21:208674 300.0 07/30/21:211830 Chloride 29 1 mg/L 5002 300.0 07/30/21:208674 300.0 07/30/21:211830 Nitrate as NO3 13.3 0.4 mg/L 45 300.0 07/30/21:208674 300.0 07/30/21:211830 itrite as N ND 0.2 mg/L 1 300.0 07/30/21:208674 300.0 07/30/21:211830 Nitrate+Nitrite as N 3.0 0.1 mg/L 10 300.0 07/30/21:208674 300.0 07/30/21:211830 Fluoride ND 0.1 mg/L 2 300.0 07/30/21:208674 300.0 07/30/21:211830 Total Anions 4.9 --- meq/L 2320B 08/09/21:209000 2320B 08/10/21:212311 H(Field) 7.41 --- units 4500-H B 07/29/21:208863 4500HB 07/29/21:211960 pecific Conductance 491 1 umhos/cm 16002 2510B 08/12/21:209209 25108 08/12/21:212407 Total Dissolved Solids 330 20 mg/L 10002 2540CE 08/02/21:208732 2540C 08/03/21:211854 AS Extraction ND 0.1 mg/L 0.52 5540C 07/30/21:208831 5540C 07/30/21:211945 Aggressiveness Index 11.7 1 -- 4500-H B 07/29/21:208863 4500HB 07/29/21:211960 angelier Index(20°C) -0.1 1 -- 4500-H B 07/29/21:208863 4500HB 07/29/21:211960 itrate Nitrogen 3.0 0.1 mg/L 1 10 1 300.0 07/30/21:208674 1 300.0 07/30/21:211830 ND=Non-Detected.PQL--Practical Quantitation Limit.*PQL adjusted for dilution. MCL=Maximum Contamination Level.2-Secondary Standard.3-CDPH Notification Level.AL=Regulatory Action Level. Page 3 of 9 Corporate Offices&Laboratory Office&Laboratory Office&Laboratory Office&Laboratory Office&Laboratory 853 Corporation Street 2500 Stagecoach Road 563 E.Undo Avenue 3442 Empresa Drive,Suite D 9415 W.Goshen Avenue Santa Paula,CA 93060 Stockton,CA 95215 Chico,CA 95926 San Luis Obispo,CA 93401 Visalia,CA 93291 TEL:(805)392-2000 TEL:(209)942-0182 TEL:(530)343-5818 TEL:(805)783-2940 TEL:(559)734-9473 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 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