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ENVIRONMENTAINW. . , Analytical Chemists March 8, 2023 Lab No. : STK2332214-001 San Joaquin Co. Environmental Health Dep Customer No.: 3017919 Water Quality Division Attn: Steven Shih Sampled On : February 16, 2023 at 09:30 1868 East Hazelton Ave. Sampled By : Francisco Garcia Rui Stockton, CA 95205 Received On : February 16, 2023 at 10:42 Description :Wellhead Matrix : Drinking Water Project :24545 Sutterfield Rd Acampo- WP0043596 Sample Results - Inorganic • ,. General Mineral Date Time Who Method Date Time Who Total Hardness as CaCO3 61.2 2.5 mg/L 1 02/21/2023 08:00 ac EPA 200.7 02/21/2023 12:39 ac Calcium 13 1 mg/L 1 02/21/2023 08:00 ac EPA 200.7 02/21/2023 12:39 ac Magnesium 7 1 mg/L 1 02/21/2023 08:00 ac EPA 200.7 02/21/2023 12:39 ac Potassium 3 1 mg/L 1 02/21/2023 08:00 ac EPA 200.7 02/21/2023 12:39 ac Sodium 22 1 mg/L 1 02/21/2023 08:00 ac EPA 200.7 02/21/2023 12:39 ac Total Cations 2.3 --- meq/L 1 02/21/2023 08:00 ac EPA 200.7 02/21/2023 12:39 ac Boron ND 0.1 mg/L 1 U 02/21/2023 08:00 ac EPA 200.7 02/21/2023 12:39 ac Copper ND 10 ug/L 10002 1 U 02/21/2023 08:00 ac EPA 200.7 02/21/2023 12:39 ac Iron 50 30 ug/L 3002 1 02/21/2023 08:00 ac EPA 200.7 02/21/2023 12:39 ac Manganese ND 10 ug/L 502 1 J 02/21/2023 08:00 ac EPA 200.7 02/21/2023 12:39 ac Zinc 70 20 ug/L 1 02/21/2023 08:00 ac EPA 200.7 02/21/2023 12:39 ac SAR 1.2 0.1 1 02/21/2023 08:00 ac EPA 200.7 02/21/2023 12:39 ac Total Alkalinity(as CaCO3) 90 10 mg/L 1 02/20/2023 21:40 amm SM 4500-H+B 02/21/2023 01:17 amm Hydroxide as OH ND 10 mg/L 1 U 02/20/2023 21:40 amm SM 4500-H+B 02/21/2023 01:17 amm Carbonate as CO3 ND 10 mg/L 1 U 02/20/2023 21:40 amm SM 4500-H+B 02/21/2023 01:17 amm Bicarbonate as HCO3 100 10 mg/L 1 02/20/2023 21:40 amm SM 4500-H+B 02/21/2023 01:17 amm Sulfate 1.3 0.5 mg/L 5002 1 02/17/2023 11:30 ldm EPA 300.0 02/17/2023 22:57 ldm Chloride 12 1 mg/L 5002 1 b 02/17/2023 11:30 ldm EPA 300.0 02/17/2023 22:57 ldm Nitrate as NO3 6.7 0.4 mg/L 45 1 02/17/2023 11:30 ldm EPA 300.0 02/17/2023 22:57 ldm Nitrite as N ND 0.1 mg/L 1 1 Ub 02/17/2023 11:30 ldm EPA 300.0 02/17/2023 22:57 ldm Nitrate+Nitrite as N 1.5 0.1 mg/L 10 1 02/17/2023 11:30 ldm EPA 300.0 02/17/2023 22:57 ldm Fluoride 0.2 0.1 mg/L 2 1 02/17/2023 11:30 ldm EPA 300.0 02/17/2023 22:57 ldm Total Anions 2.1 --- meq/L 1 b 02/20/2023 21:40 amm SM 4500-H+B 02/21/2023 01:17 amm pH 7.52 --- units 1 02/16/2023 09:30 fgr 02/16/2023 09:30 fgr Specific Conductance 210 1 umhos/cm 16002 1 02/20/2023 21:40 amm SM 4500-H+B 02/21/2023 01:17 amm Total Dissolved Solids 180 20 mg/L 10002 1 02/20/2023 10:47 ctl SM 2540 C 02/21/2023 11:24 ctl MBAS(foaming agents) Negative 0.1 mg/L 0.52 1 U 02/17/2023 15:06 jba SM 5540 C 02/17/2023 15:12 jba Aggressiveness Index 11.0 1 1 02/16/2023 09:30 fgr 02/16/2023 09:30 fgr Langelier Index(20°C) -0.8 1 1 02/16/2023 09:30 fgr 02/16/2023 09:30 fgr Nitrate Nitrogen 1.5 0.1 mg/L 10 1 02/17/2023 11:30 ldm EPA 300.0 02/17/2023 22:57 ldm 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. b The Blank was positive for constituent but less than the PQL 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