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.O `AGRICULTURAL Analytical Chemists September 29, 2022 Lab No. : STK2253004-001 San Joaquin Co. Environmental Health Dep Customer No.: 3017919 Water Quality Division Attn: Steven Shih Sampled On : September 13, 2022 at 10:15 1868 East Hazelton Ave. Sampled By : Naseem Ahmed Stockton, CA 95205 Received On : September 13, 2022 at 10:55 Description : Well Head Matrix : Drinking Water Project 16133 Moore Rd. Lodi Sample Results - Inorganic 91 _ • . General Mineral Date Time Who Method Date Time Who Total Hardness as CaCO3 70.3 2.5 mg/L 1 09/22/2022 11:00 ac EPA 200.7 09/22/2022 16:07 ac Calcium 15 1 mg/L 1 09/22/2022 11:00 ac EPA 200.7 09/22/2022 16:07 ac Magnesium 8 1 mg/L 1 09/22/2022 11:00 ac EPA 200.7 09/22/2022 16:07 ac Potassium 4 1 mg/L 1 09/22/2022 11:00 ac EPA 200.7 09/22/2022 16:07 ac Sodium 18 1 mg/L 1 09/22/2022 11:00 ac EPA 200.7 09/22/2022 16:07 ac Total Cations 2.3 --- meq/L 1 09/22/2022 11:00 ac EPA 200.7 09/22/2022 16:07 ac Boron ND 0.1 mg/L 1 U 09/22/2022 11:00 ac EPA 200.7 09/22/2022 16:07 ac Copper ND 10 ug/L 10002 1 J 09/22/2022 11:00 ac EPA 200.7 09/22/2022 16:07 ac Iron ND 30 ug/L 3002 1 U 09/22/2022 11:00 ac EPA 200.7 09/22/2022 16:07 ac Manganese ND 10 ug/L 502 1 U 09/22/2022 11:00 ac EPA 200.7 09/22/2022 16:07 ac Zinc ND 20 ug/L 1 U 09/22/2022 11:00 ac EPA 200.7 09/22/2022 16:07 ac SAR 0.9 0.1 1 09/22/2022 11:00 ac EPA 200.7 09/22/2022 16:07 ac Total Alkalinity(as CaCO3) 90 10 mg/L 1 09/25/2022 23:19 amm SM 4500-H+B 09/26/2022 02:31 amm Hydroxide as OH ND 10 mg/L 1 U 09/25/2022 23:19 amm SM 4500-H+B 09/26/2022 02:31 amm Carbonate as CO3 ND 10 mg/L 1 U 09/25/2022 23:19 amm SM 4500-H+B 09/26/2022 02:31 amm Bicarbonate as HCO3 110 10 mg/L 1 09/25/2022 23:19 amm SM 4500-H+B 09/26/2022 02:31 amm Sulfate 6.8 0.5 mg/L 5002 1 1 09/14/2022 10:51 ldm EPA 300.0 09/14/2022 18:29 ldm Chloride 5 1 mg/L 5002 1 1 09/14/2022 10:51 ldm EPA 300.0 09/14/2022 18:29 ldm Nitrate as NO3 4.4 0.4 mg/L 45 1 1 09/14/2022 10:51 ldm EPA 300.0 09/14/2022 18:29 ldm Nitrite as N ND 0.1 mg/L 1 1 U 09/14/2022 10:51 ldm EPA 300.0 09/14/2022 18:29 ldm Nitrate+Nitrite as N 1 0.1 mg/L 10 1 1 09/14/2022 10:51 ldm EPA 300.0 09/14/2022 18:29 ldm Fluoride 0.1 0.1 mg/L 2 1 09/14/2022 10:51 ldm EPA 300.0 09/14/2022 18:29 ldm Total Anions 2.2 --- meq/L 1 1 09/25/2022 23:19 amm SM 4500-H+B 09/26/2022 02:31 amm pH 8.04 --- units 1 T 09/25/2022 23:19 amm SM 4500-H+B 09/26/2022 02:31 amm Specific Conductance 215 1 umhos/cm 16002 1 09/22/2022 11:53 sta. SM 4500-H+B 09/22/2022 17:16 sta Total Dissolved Solids 150 20 mg/L 10002 1 09/15/2022 15:35 ctl SM 2540 C 09/16/2022 11:53 ctl MBAS(foaming agents) Negative 0.1 mg/L 0.52 1 U 09/14/2022 16:40 jba SM 5540 C 09/14/2022 16:44 jba Aggressiveness Index 11.6 1 1 09/25/2022 23:19 amm SM 4500-H+B 09/26/2022 02:31 amm Langelier Index(20°C) -0.2 1 1 09/25/2022 23:19 amm SM 4500-H+B 09/26/2022 02:31 amm Nitrate Nitrogen 1 0.1 mg/L 10 1 1 09/14/2022 10:51 ldm EPA 300.0 09/14/2022 18:29 ldm DQF Flags Definition: U Constituent results were non-detect. J Reported value is estimated;detected at a concentration below the PQL and above the laboratory MDL. 1 The MS/MSD did not meet QC criteria. T Exceeded method/regulatory-specific holding time. 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 3 of 8 Page 3 of 8 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