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ENVIRONMENTAINW. . , Analytical Chemists February 9, 2024 Lab No. : STK2431581-001 San Joaquin Co. Environmental Health Dep Customer No.: 3017919 Water Quality Division Attn: Scott Sanglaang Sampled On : February 1, 2024 at 10:18 1868 East Hazelton Ave. Sampled By : Naseem Ahmed Stockton, CA 95205 Received On : February 1, 2024 at 12:11 Description :Wellhead Matrix : Drinking Water Project :25451 N. Magnolia Place, Acampo- WP0044718 Sample Results - Inorganic Sample AnalysisGeneral Mineral Date Time Who Method Date Time Who Total Hardness as CaCO3 119 mg/L 02/03/2024 07:00 ac 2340B 02/03/2024 12:39 ac Calcium 23 1 mg/L 1 02/03/2024 07:00 ac EPA 200.7 02/03/2024 12:39 ac Magnesium 15 1 mg/L 1 02/03/2024 07:00 ac EPA 200.7 02/03/2024 12:39 ac Potassium 4 1 mg/L 1 02/03/2024 07:00 ac EPA 200.7 02/03/2024 12:39 ac Sodium 12 1 mg/L 1 02/03/2024 07:00 ac EPA 200.7 02/03/2024 12:39 ac Total Cations 3.0 1 meq/L 02/03/2024 07:00 ac Calc. 02/03/2024 12:39 ac Boron ND 0.1 mg/L 1 U 02/03/2024 07:00 ac EPA 200.7 02/03/2024 12:39 ac Copper ND 10 ug/L 10002 1 U 02/03/2024 07:00 ac EPA 200.7 02/03/2024 12:39 ac Iron ND 30 ug/L 3002 1 U 02/03/2024 07:00 ac EPA 200.7 02/03/2024 12:39 ac Manganese ND 10 ug/L 502 1 U 02/03/2024 07:00 ac EPA 200.7 02/03/2024 12:39 ac Zinc ND 20 ug/L 5000 1 U 02/03/2024 07:00 ac EPA 200.7 02/03/2024 12:39 ac SAR 0.5 mg/L 02/03/2024 07:00 ac Calc. 02/03/2024 12:39 ac Total Alkalinity(as CaCO3) 110 10 mg/L 1 02/05/2024 15:45 amm SM 4500-H+B 02/05/2024 17:54 amm Hydroxide as OH ND 10 mg/L 1 U 02/05/2024 15:45 amm SM 4500-H+B 02/05/2024 17:54 amm Carbonate as CO3 ND 10 mg/L 1 U 02/05/2024 15:45 amm SM 4500-H+B 02/05/2024 17:54 amm Bicarbonate as HCO3 140 10 mg/L 1 02/05/2024 15:45 amm SM 4500-H+B 02/05/2024 17:54 amm Sulfate 7.6 0.5 mg/L 5002 1 h 02/02/2024 15:03 ldm EPA 300.0 02/03/2024 03:12 ldm Chloride 14 1 mg/L 5002 1 hl 02/02/2024 15:03 ldm EPA 300.0 02/03/2024 03:12 ldm Nitrate as NO3 9.3 0.4 mg/L 45 1 h 02/02/2024 15:03 ldm EPA 300.0 02/03/2024 03:12 ldm Nitrite as N ND 0.1 mg/L 1 1 Uh 02/02/2024 15:03 ldm EPA 300.0 02/03/2024 03:12 ldm Nitrate+Nitrite as N 2.1 0.1 mg/L 10 1 h 02/02/2024 15:03 ldm EPA 300.0 02/03/2024 03:12 ldm Fluoride 0.1 0.1 mg/L 2 1 h 02/02/2024 15:03 ldm EPA 300.0 02/03/2024 03:12 ldm Total Anions 3.0 0.1 meq/L 02/02/2024 15:03 ldm Calc. 02/03/2024 03:12 ldm pH 7.20 --- units 1 02/01/2024 10:18 na SM 4500-H+B 02/01/2024 10:18 na Specific Conductance 295 1 umhos/cm 16002 1 02/05/2024 15:45 amm SM 4500-H+B 02/05/2024 17:54 amm. Total Dissolved Solids 260 20 mg/L 10002 1 02/05/2024 10:50 ctl SM 2540 C 02/06/2024 11:00 ctl MBAS,Calc.as LAS,MW 320 Negative 0.1 mg/L 0.52 1 U 02/02/2024 14:33 krh SM 5540 C 02/02/2024 14:47 krh Aggressiveness Index 11.0 --- --- 02/03/2024 07:00 ac Calc. 02/03/2024 12:39 ac Langelier Index(20°C) -0.8 --- --- 02/03/2024 07:00 ac Calc. 02/03/2024 12:39 ac Nitrate Nitrogen 2.1 0.1 mg/L 10 1 h 02/02/2024 15:03 ldm EPA 300.0 02/03/2024 03:12 ldm DQF Flags Definition: U Constituent results were non-detect. h The MS/MSD did not meet QC criteria. 1 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.Lindo 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