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ENVIRONMENTAINW. . , Analytical Chemists November 4, 2022 Lab No. : STK2255140-001 San Joaquin Co. Environmental Health Dep Customer No.: 3017919 Water Quality Division Attn: Steven Shih Sampled On : October 20, 2022 at 09:20 1868 East Hazelton Ave. Sampled By : Francisco Garcia Rui Stockton, CA 95205 Received On : October 20, 2022 at 10:28 Description :Wellhead Matrix : Drinking Water Project :3522 E. Forest Lake Rd.,Acampo- WP0043666 Sample Results - Inorganic • ,. General Mineral Date Time Who Method Date Time Who Total Hardness as CaCO3 221 2.5 mg/L 1 h 10/24/2022 15:00 ac EPA 200.7 10/25/2022 16:59 ac Calcium 44 1 mg/L 1 h 10/24/2022 15:00 ac EPA 200.7 10/25/2022 16:59 ac Magnesium 27 1 mg/L 1 h 10/24/2022 15:00 ac EPA 200.7 10/31/2022 16:56 ac Potassium 5 1 mg/L 1 h 10/24/2022 15:00 ac EPA 200.7 10/25/2022 16:59 ac Sodium 16 1 mg/L 1 h 10/24/2022 15:00 ac EPA 200.7 10/31/2022 16:56 ac Total Cations 5.2 --- meq/L 1 h 10/24/2022 15:00 ac EPA 200.7 10/25/2022 16:59 ac Boron ND 0.1 mg/L 1 J 10/24/2022 15:00 ac EPA 200.7 10/24/2022 21:29 ac Copper ND 10 ug/L 10002 1 J 10/24/2022 15:00 ac EPA 200.7 10/24/2022 21:29 ac Iron ND 30 ug/L 3002 1 J 10/24/2022 15:00 ac EPA 200.7 10/24/2022 21:29 ac Manganese ND 10 ug/L 502 1 J 10/24/2022 15:00 ac EPA 200.7 10/24/2022 21:29 ac Zinc 20 20 ug/L 1 10/24/2022 15:00 ac EPA 200.7 10/24/2022 21:29 ac SAR 0.5 0.1 1 h 10/24/2022 15:00 ac EPA 200.7 10/25/2022 16:59 ac Total Alkalinity(as CaCO3) 180 10 mg/L 1 10/24/2022 19:39 amm SM 4500-H+B 10/24/2022 23:34 amm Hydroxide as OH ND 10 mg/L 1 U 10/24/2022 19:39 amm SM 4500-H+B 10/24/2022 23:34 amm Carbonate as CO3 ND 10 mg/L 1 U 10/24/2022 19:39 amm SM 4500-H+B 10/24/2022 23:34 amm Bicarbonate as HCO3 220 10 mg/L 1 10/24/2022 19:39 amm SM 4500-H+B 10/24/2022 23:34 amm Sulfate 22.2 0.5 mg/L 5002 1 1 10/21/2022 12:06 ldm EPA 300.0 10/21/2022 19:53 ldm Chloride 34 1 mg/L 5002 1 10/21/2022 12:06 ldm EPA 300.0 10/21/2022 19:53 ldm Nitrate as NO3 13.9 0.4 mg/L 45 1 10/21/2022 12:06 ldm EPA 300.0 10/21/2022 19:53 ldm Nitrite as N ND 0.1 mg/L 1 1 J 10/21/2022 12:06 ldm EPA 300.0 10/21/2022 19:53 ldm Nitrate+Nitrite as N 3.1 0.1 mg/L 10 1 10/21/2022 12:06 ldm EPA 300.0 10/21/2022 19:53 ldm Fluoride ND 0.1 mg/L 2 1 J 10/21/2022 12:06 ldm EPA 300.0 10/21/2022 19:53 ldm Total Anions 5.3 --- meq/L 1 1J 10/24/2022 19:39 amm SM 4500-H+B 10/24/2022 23:34 amm pH 7.97 --- units 1 10/20/2022 09:20 fgr 10/20/2022 09:20 fgr Specific Conductance 508 1 umhos/cm 16002 1 10/24/2022 19:39 amm SM 4500-H+B 10/24/2022 23:34 amm Total Dissolved Solids 330 20 mg/L 10002 1 10/24/2022 10:49 ctl SM 2540 C 10/25/2022 11:51 ctl MBAs(foaming agents) Negative 0.1 mg/L 0.52 1 U 10/21/2022 15:47 jba SM 5540 C 10/21/2022 16:03 jba Aggressiveness Index 12.3 1 1 10/20/2022 09:20 fgr 10/20/2022 09:20 fgr Langelier Index(20°C) 0.4 1 1 h 10/20/2022 09:20 fgr 10/20/2022 09:20 fgr Nitrate Nitrogen 3.1 0.1 mg/L 10 1 10/21/2022 12:06 ldm EPA 300.0 10/21/2022 19:53 ldm DQF Flags Definition: h The MS/MSD did not meet QC criteria. J Reported value is estimated;detected at a concentration below the PQL and above the laboratory MDL. U Constituent results were non-detect. 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