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ENVIRONMENTAINW. . , Analytical Chemists February 1, 2024 Lab No. : STK2430810-001 San Joaquin Co. Environmental Health Dep Customer No.: 3017919 Water Quality Division Attn: Scott Sanglaang Sampled On :January 12, 2024 at 13:30 1868 East Hazelton Ave. Sampled By : Naseem Ahmed Stockton, CA 95205 Received On :January 12, 2024 at 15:03 Description Well Head Matrix : Drinking Water Project 184 Harney Ln Lodi WP0044683 Sample Results - Inorganic Sample AnalysisGeneral Mineral Date Time Who Method Date Time Who Total Hardness as CaCO3 68.7 mg/L 01/16/2024 13:00 ac 2340B 01/16/2024 16:21 ac Calcium 16 1 mg/L 1 01/16/2024 13:00 ac EPA 200.7 01/16/2024 16:21 ac Magnesium 7 1 mg/L 1 01/16/2024 13:00 ac EPA 200.7 01/16/2024 16:21 ac Potassium 5 1 mg/L 1 01/16/2024 13:00 ac EPA 200.7 01/16/2024 16:21 ac Sodium 15 1 mg/L 1 01/16/2024 13:00 ac EPA 200.7 01/16/2024 16:21 ac Total Cations 2.2 1 meq/L 01/16/2024 13:00 ac Calc. 01/16/2024 16:21 ac Boron ND 0.1 mg/L 1 U 01/16/2024 13:00 ac EPA 200.7 01/16/2024 16:21 ac Copper 210 10 ug/L 1000, 1 01/16/2024 13:00 ac EPA 200.7 01/16/2024 16:21 ac Iron ND 30 ug/L 300, 1 U 01/16/2024 13:00 ac EPA 200.7 01/16/2024 16:21 ac Manganese ND 10 ug/L 50, 1 U 01/16/2024 13:00 ac EPA 200.7 01/16/2024 16:21 ac Zinc 20 20 ug/L 5000 1 01/16/2024 13:00 ac EPA 200.7 01/16/2024 16:21 ac SAR 0.8 mg/L 01/16/2024 13:00 ac Calc. 01/16/2024 16:21 ac Total Alkalinity(as CaCO3) 90 10 mg/L 1 01/23/2024 16:06 amm SM 4500-H+B 01/24/2024 05:16 amm Hydroxide as OH ND 10 mg/L 1 U 01/23/2024 16:06 amm SM 4500-H+B 01/24/2024 05:16 amm Carbonate as CO3 ND mg/L 01/23/2024 16:06 amm SM 4500-H+B 01/24/2024 05:16 amm Bicarbonate as HCO3 110 10 mg/L 1 01/23/2024 16:06 amm SM 4500-H+B 01/24/2024 05:16 amm Sulfate 4.2 0.5 mg/L 500, 1 01/25/2024 10:39 ldm EPA 300.0 01/25/2024 13:22 ldm Chloride 13 1 mg/L 500, 1 01/25/2024 10:39 ldm EPA 300.0 01/25/2024 13:22 ldm Nitrate as NO3 1.5 0.4 mg/L 45 1 J 01/19/2024 11:30 Up SM 4500-NO3 F 01/19/2024 12:49 ilp Nitrite as N ND 0.1 mg/L 1 1 U 01/13/2024 21:00 amm SM 4500-NO2 B 01/13/2024 22:07 amm Nitrate+Nitrite as N ND 0.4 mg/L 10 1 U 01/19/2024 11:30 Up SM 4500-NO3 F 01/19/2024 12:49 ilp Fluoride 0.1 0.1 mg/L 2 1 01/25/2024 10:39 ldm EPA 300.0 01/25/2024 13:22 ldm Total Anions 2.3 0.4 meq/L 01/25/2024 10:39 ldm Calc. 01/25/2024 13:22 ldm pH 7.5 --- units 1 01/12/2024 13:30 na SM 4500-H+B 01/12/2024 13:30 na Specific Conductance 217 1 umhos/cm 16002 1 01/23/2024 16:06 amm SM 4500-H+B 01/24/2024 05:16 amm Total Dissolved Solids 190 20 mg/L 10002 1 01/16/2024 12:30 ctl SM 2540 C 01/17/2024 10:00 ctl MBAS,Calc.as LAS,MW 320 Negative 0.1 mg/L 0.52 1 U 01/13/2024 19:00 amm SM 5540 C 01/13/2024 19:10 amm Aggressiveness Index 11.1 --- --- 01/16/2024 13:00 ac Calc. 01/16/2024 16:21 ac Langelier Index(20°C) -0.8 --- --- 01/16/2024 13:00 ac Calc. 01/16/2024 16:21 ac Nitrate Nitrogen ND 0.4 mg/L 10 1 U 01/19/2024 11:30 Up SM 4500-NO3 F 01/19/2024 12:49 ilp DQF Flags Definition: U Constituent results were non-detect. J Reported value is estimated;detected at a concentration below the RL and above the laboratory MDL. 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