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ENVIRONMENTAINW. . , Analytical Chemists June 11, 2024 Lab No. : STK2437397-001 San Joaquin Co. Environmental Health Dep Customer No.: 3017919 Water Quality Division Attn: Scott Sanglaang Sampled On : May 22, 2024 at 09:40 1868 East Hazelton Ave. Sampled By : Naseem Ahmed Stockton, CA 95205 Received On : May 22, 2024 at 12:26 Description :Wellhead Matrix : Drinking Water Project : 11250 N. Micke Grove Rd., Lodi (Well #1)-WP0043537 Sample Results - Inorganic • ,. General Mineral Date Time Who Method Date Time Who Total Hardness as CaCO3 107 2.5 mg/L 05/23/2024 14:02 ac 2340B 05/24/2024 01:16 ac Calcium 28 1 mg/L 1 05/23/2024 14:02 ac EPA 200.7 05/24/2024 01:16 ac Magnesium 9 1 mg/L 1 05/23/2024 14:02 ac EPA 200.7 05/24/2024 01:16 ac Potassium 3 1 mg/L 1 05/23/2024 14:02 ac EPA 200.7 05/24/2024 01:16 ac Sodium 16 1 mg/L 1 05/23/2024 14:02 ac EPA 200.7 05/24/2024 01:16 ac Total Cations 2.9 1 meq/L 05/23/2024 14:02 ac Calc. 05/24/2024 01:16 ac Boron 0.02 0.01 mg/L 1 05/23/2024 14:00 ac EPA 200.8 05/23/2024 21:17 ac Copper 51 1 ug/L 10002 1 05/23/2024 14:00 ac EPA 200.8 05/23/2024 21:17 ac Iron ND 30 ug/L 3002 1 U 05/23/2024 14:02 ac EPA 200.7 05/24/2024 01:16 ac Manganese ND 0.5 ug/L 502 1 U 05/23/2024 14:00 ac EPA 200.8 05/23/2024 21:17 ac Zinc 110 10 ug/L 5000 1 05/23/2024 14:00 ac EPA 200.8 05/23/2024 21:17 ac SAR 0.7 05/23/2024 14:02 ac Calc. 05/24/2024 01:16 ac Total Alkalinity(as CaCO3) 130 10 mg/L 1 05/25/2024 19:22 amm SM 4500-H+B 05/26/2024 07:45 amm Hydroxide as OH ND 10 mg/L 1 U 05/25/2024 19:22 amm SM 4500-H+B 05/26/2024 07:45 amm Carbonate as CO3 ND 10 mg/L 1 U 05/25/2024 19:22 amm SM 4500-H+B 05/26/2024 07:45 amm Bicarbonate as HCO3 150 10 mg/L 1 05/25/2024 19:22 amm SM 4500-H+B 05/26/2024 07:45 amm Sulfate 6.7 0.5 mg/L 5002 1 05/23/2024 11:14 ldm EPA 300.0 05/23/2024 18:58 ldm Chloride 9 1 mg/L 5002 1 05/23/2024 11:14 ldm EPA 300.0 05/23/2024 18:58 ldm Nitrate as NO3 6.7 0.4 mg/L 45 1 05/23/2024 11:14 ldm EPA 300.0 05/23/2024 18:58 ldm Nitrite as N ND 0.1 mg/L 1 1 U 05/23/2024 11:14 ldm EPA 300.0 05/23/2024 18:58 ldm Nitrate+Nitrite as N 1.5 0.1 mg/L 10 1 05/23/2024 11:14 ldm EPA 300.0 05/23/2024 18:58 ldm Fluoride 0.1 0.1 mg/L 2 1 05/23/2024 11:14 ldm EPA 300.0 05/23/2024 18:58 ldm Total Anions 3.0 10 meq/L 05/23/2024 11:14 ldm Calc. 05/23/2024 18:58 ldm pH 7.40 --- units 1 05/22/2024 09:40 na SM 4500-H+B 05/22/2024 09:40 na Specific Conductance 297 1 umhos/cm 16002 1 05/25/2024 19:22 amm SM 4500-H+B 05/26/2024 07:45 amm Total Dissolved Solids 220 20 mg/L 10002 1 05/24/2024 14:30 ctl SM 2540 C 05/28/2024 11:00 ctl MBAS,Calc.as LAS,MW 320 Negative 0.1 mg/L 0.52 1 U 05/23/2024 13:11 krh SM 5540 C 05/23/2024 13:20 krh Aggressiveness Index 11.4 10 --- 05/23/2024 14:02 ac Calc. 05/24/2024 01:16 ac Langelier Index(20°C) -0.5 20 --- 05/23/2024 14:02 ac Calc. 05/24/2024 01:16 ac Nitrate Nitrogen 1.5 0.1 mg/L 10 1 05/23/2024 11:14 ldm EPA 300.0 05/23/2024 18:58 ldm Metals,Total Arsenic 3 1 ug/L 10 1 h 05/23/2024 14:00 ac EPA 200.8 05/23/2024 21:17 ac DQF Flags Definition: U Constituent results were non-detect. h The MS/MSD did not meet QC criteria. ND=Non-Detected, RL=Reporting Level, Dil.=Dilution MCL= Maximum Contamination Level. 2 - Secondary Standard. 3 -CDPH Notification Level.AL= Regulatory Action Level. Section: Sample Results Page 2 of 7 Page 2 of 7 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