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FGL ENVIRONMENTAL Analytical Chemists March 23, 2021 Lab ID : STK2132917-001 Customer ID : 3-17919 San Joaquin Co. Environmental Health Dep Water Quality Division Sampled On : March 2, 2021-10:40 Attn: Michael Kith Sampled By : Francisco Garcia Rui 1868 East Hazelton Ave. Received On : March 2, 2021-12:58 Stockton, CA 95205 Matrix : Drinking Water Description : Wellhead Project : 1131 W. Bowman Rd. French Camp,CA Sample Result - Inorganic Constituent Result I'QL Units MCL/AL Sample Preparation Sample Analysis Method Date/ID Method Date/ID General Mineral Total Hardness as CaCO3 309 mg/L, 200.7 03/03/21:202347 200.7 03/03/21:203185 Calcium 76 I mg/L 200.7 03/03/21:202347 200.7 03/03/21:203185 Magnesium 29 I mgAL 200.7 03/03/21:202347 200.7 03/03/21:203185 Potassium 3 1 mg/L 200.7 03/03/21:202347 200.7 03/03/21:203185 Sodium 376 1 mg/L 200.7 03/03/21:202347 200.7 03/03/21:203185 Total Cations 22.6 --- meq/L 200.7 03/03/21:202347 200.7 03/03/21:203185 Boron 0.6 0.1 mg/I. 200.7 03/03/21:202347 200.7 03/03/21:203185 Copper ND 10 ug/L 10002 200.7 03/03/21:202347 200.7 03/03/21:203185 On 40 30 ug/L 300'- 200.7 03/03/21:202347 200.7 03/03/21:203185 anganese 230 10 ug/L 502 200.7 03/03/21:202347 200.7 03/03/21:203185 Zinc ND 20 ug/L 200.7 03/03/21:202347 200.7 03/03/21:203185 SAR 9.3 0.1 -- 200.7 03/03/21:202347 200.7 03/03/21:203185 Total Alkalinity(as 590 10 mg/L 2320B 03/09/21:202598 2320B 03/09/21:203569 aCO3) ydroxide as OH ND 10 mg/L 2320B 03/09/21:202598 2320B 03/09/21:203569 Carbonate as CO3 ND 10 mg/L 2320B 03/09/21:202598 2320B 03/09/21:203569 Bicarbonate as HCO3 720 10 mg/L 2320B 03/09/21:202598 2320B 03/09/21:203569 Sulfate 232 3.5* mg/L 5002 300.0 03/03/21:202344 300.0 03/04/21:203334 Chloride 318 7* mg/L 5002 300.0 03/03/21:202344 300.0 03/04/21:203334 itrate as NO3 11.1 0.4 mg/L 45 300.0 03/03/21:202344 300.0 03/04/21:203334 Nitrite as N ND 0.2 mg/L 1 300.0 03/03/21:202344 300.0 03/04/21:203334 Nitrate+Nitrite as N 2.5 0.1 mg/L 10 300.0 03/03/21:202344 300.0 03/04/21:203334 Fluoride ND 0.1 mg/L 2 300.0 03/03/21:202344 300.0 03/04/21:203334 Total Anions 25.8 --- meq/L 2320B 03/09/21:202598 2320B 03/09/21:203569 H(Field) 7.9 -- units 4500-H B 03/02!21:202577 4500HB 03/02/21:203492 Specific Conductance 2600 1 umbos/cm 16002 2510B 03/10/21:202616 2510B 03/10/21:203537 Total Dissolved Solids 1540 20 mg/L 10002 2540CE 03/04/21:202369 2540C 03/05/21:203285 AS Extraction ND 0.1 mg/L 0.52 5540C 03/03/21:202525 5540C 03/03/21:203394 Aggressiveness Index 12.9 1 -- 4500-H B 03/02/21:202577 4500HB 03/02/21:203492 angelier Index(20°C) 1.0 1 -- 4500-H B 03/02/21:202577 4500HB 03/02/21:203492 Nitrate Nitrogen 2.5 0.1 mg/L 10 300.0 03/03/21:202344 300.0 03/04/21:203334 ND=Non-Detected.PQLrPractical Quantitation Limit.*PQL adjusted for dilution. MCL=Maximum Contamination Level.2-Secondary Standard.3-CDPH Notification Le%el.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