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ENVIRONMENTAINW. . , Analytical Chemists July 26, 2022 Lab No. : STK2239270-001 San Joaquin Co. Environmental Health Dep Customer No.: 3017919 Water Quality Division Attn: Steven Shih Sampled On :July 5, 2022 at 11:15 1868 East Hazelton Ave. Sampled By : Francisco Garcia Rui Stockton, CA 95205 Received On :July 5, 2022 at 12:24 Description :Wellhead Matrix : Drinking Water Project : 18437 Collier Road, Acampo, CA 95220 Sample Results - Inorganic Sample AnalysisGeneral Mineral Date Time Who Method Date Time Who Total Hardness as CaCO3 104 2.5 mg/L 1 07/07/2022 08:00 ac EPA 200.7 07/07/2022 16:07 ac Calcium 22 1 mg/L 1 07/07/2022 08:00 ac EPA 200.7 07/07/2022 16:07 ac Magnesium 12 1 mg/L 1 07/07/2022 08:00 ac EPA 200.7 07/07/2022 16:07 ac Potassium 6 1 mg/L 1 07/07/2022 08:00 ac EPA 200.7 07/07/2022 16:07 ac Sodium 12 1 mg/L 1 07/07/2022 08:00 ac EPA 200.7 07/07/2022 16:07 ac Total Cations 2.8 --- meq/L 1 07/07/2022 08:00 ac EPA 200.7 07/07/2022 16:07 ac Boron ND 0.1 mg/L 1 J 07/07/2022 08:00 ac EPA 200.7 07/07/2022 16:07 ac Copper ND 10 ug/L 10002 1 J 07/07/2022 08:00 ac EPA 200.7 07/07/2022 16:07 ac Iron ND 30 ug/L 3002 1 J 07/07/2022 08:00 ac EPA 200.7 07/07/2022 16:07 ac Manganese ND 10 ug/L 502 1 U 07/07/2022 08:00 ac EPA 200.7 07/07/2022 16:07 ac Zinc ND 20 ug/L 1 J 07/07/2022 08:00 ac EPA 200.7 07/07/2022 16:07 ac SAR 0.5 0.1 1 07/07/2022 08:00 ac EPA 200.7 07/07/2022 16:07 ac Total Alkalinity(as CaCO3) 100 10 mg/L 1 07/17/2022 15:35 amm SM 2320 B 07/17/2022 21:19 amm Hydroxide as OH ND 10 mg/L 1 U 07/17/2022 15:35 amm SM 2320 B 07/17/2022 21:19 amm Carbonate as CO3 ND 10 mg/L 1 U 07/17/2022 15:35 amm SM 2320 B 07/17/2022 21:19 amm Bicarbonate as HCO3 130 10 mg/L 1 07/17/2022 15:35 amm SM 2320 B 07/17/2022 21:19 amm Sulfate 8.1 0.5 mg/L 5002 1 07/06/2022 14:45 njb EPA 300.0 07/06/2022 17:07 njb Chloride 4 1 mg/L 5002 1 1 07/06/2022 14:45 njb EPA 300.0 07/06/2022 17:07 njb Nitrate as NO3 5.0 0.4 mg/L 45 1 07/06/2022 14:45 njb EPA 300.0 07/06/2022 17:07 njb Nitrite as N ND 0.1 mg/L 1 1 U 07/06/2022 14:45 njb EPA 300.0 07/06/2022 17:07 njb Nitrate+Nitrite as N 1.1 0.1 mg/L 10 1 07/06/2022 14:45 njb EPA 300.0 07/06/2022 17:07 njb Fluoride ND 0.1 mg/L 2 1 J 07/06/2022 14:45 njb EPA 300.0 07/06/2022 17:07 njb Total Anions 2.5 --- meq/L 1 1J 07/17/2022 15:35 amm SM 2320 B 07/17/2022 21:19 amm pH 7.01 --- units 1 07/05/2022 11:15 fgr SM 4500-H+B 07/05/2022 11:15 fgr Specific Conductance 254 1 umhos/cm 16002 1 07/12/2022 16:08 sta. SM 2510 B 07/12/2022 16:08 sta Total Dissolved Solids 210 20 mg/L 10002 1 07/07/2022 08:35 ctl SM 2540 C 07/08/2022 09:12 ctl MBAS(foaming agents) Negative 0.1 mg/L 0.52 1 U 07/06/2022 16:27 jba SM 5540 C 07/06/2022 16:30 jba Aggressiveness Index 10.8 1 1 07/05/2022 11:15 fgr SM 4500-H+B 07/05/2022 11:15 fgr Langelier Index(20°C) -1.1 1 1 07/05/2022 11:15 fgr SM 4500-H+B 07/05/2022 11:15 fgr Nitrate Nitrogen 1.1 0.1 mg/L 10 1 07/06/2022 14:45 njb EPA 300.0 07/06/2022 17:07 njb DQF Flags Definition: 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.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