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.O `AGRICULTURAL Analytical Chemists September 12, 2022 Lab No. : STK2252062-001 San Joaquin Co. Environmental Health Dep Customer No.: 3017919 Water Quality Division Attn: Steven Shih Sampled On : August 24, 2022 at 10:55 1868 East Hazelton Ave. Sampled By : Frank Giardi Stockton, CA 95205 Received On : August 24, 2022 at 11:51 Description :Wellhead Matrix : Drinking Water Project : 12836 Puddy Creek Lane, Lodi- WP0043530 Sample Results - Inorganic Sample AnalysisGeneral Mineral Date Time Who Method Date Time Who Total Hardness as CaCO3 66.2 2.5 mg/L 1 08/26/2022 09:00 ac EPA 200.7 08/26/2022 12:02 ac Calcium 15 1 mg/L 1 08/26/2022 09:00 ac EPA 200.7 08/26/2022 12:02 ac Magnesium 7 1 mg/L 1 08/26/2022 09:00 ac EPA 200.7 08/26/2022 12:02 ac Potassium 3 1 mg/L 1 08/26/2022 09:00 ac EPA 200.7 08/26/2022 12:02 ac Sodium 23 1 mg/L 1 08/26/2022 09:00 ac EPA 200.7 08/26/2022 12:02 ac Total Cations 2.4 --- meq/L 1 08/26/2022 09:00 ac EPA 200.7 08/26/2022 12:02 ac Boron ND 0.1 mg/L 1 J 08/26/2022 09:00 ac EPA 200.7 08/26/2022 12:02 ac Copper ND 10 ug/L 10002 1 U 08/26/2022 09:00 ac EPA 200.7 08/26/2022 12:02 ac Iron ND 30 ug/L 3002 1 J 08/26/2022 09:00 ac EPA 200.7 08/26/2022 12:02 ac Manganese ND 10 ug/L 502 1 J 08/26/2022 09:00 ac EPA 200.7 08/26/2022 12:02 ac Zinc 30 20 ug/L 1 08/26/2022 09:00 ac EPA 200.7 08/26/2022 12:02 ac SAR 1.2 0.1 1 08/26/2022 09:00 ac EPA 200.7 08/26/2022 12:02 ac Total Alkalinity(as CaCO3) 80 10 mg/L 1 09/03/2022 19:27 amen SM 2320 B 09/04/2022 00:49 amen Hydroxide as OH ND 10 mg/L 1 U 09/03/2022 19:27 amen SM 2320 B 09/04/2022 00:49 amen Carbonate as CO3 ND 10 mg/L 1 U 09/03/2022 19:27 amen SM 2320 B 09/04/2022 00:49 amen Bicarbonate as HCO3 100 10 mg/L 1 09/03/2022 19:27 amen SM 2320 B 09/04/2022 00:49 amen Sulfate 5.6 0.5 mg/L 5002 1 08/25/2022 10:15 ldm EPA 300.0 08/25/2022 13:34 ldm Chloride 9 1 mg/L 5002 1 08/25/2022 10:15 ldm EPA 300.0 08/25/2022 13:34 ldm Nitrate as NO3 4.9 0.4 mg/L 45 1 08/25/2022 10:15 ldm EPA 300.0 08/25/2022 13:34 ldm Nitrite as N ND 0.1 mg/L 1 1 U 08/25/2022 10:15 ldm EPA 300.0 08/25/2022 13:34 ldm Nitrate+Nitrite as N 1.1 0.1 mg/L 10 1 08/25/2022 10:15 ldm EPA 300.0 08/25/2022 13:34 ldm Fluoride 0.2 0.1 mg/L 2 1 08/25/2022 10:15 ldm EPA 300.0 08/25/2022 13:34 ldm Total Anions 2.1 --- meq/L 1 09/03/2022 19:27 amm SM 2320 B 09/04/2022 00:49 amm pH 5.88 --- units 1 08/24/2022 10:55 fg SM 4500-H+B 08/24/2022 10:55 fg Specific Conductance 221 1 umhos/cm 16002 1 08/30/2022 13:30 sta. SM 2510 B 08/30/2022 13:30 sta. Total Dissolved Solids 190 20 mg/L 10002 1 I 08/26/2022 10:12 ctl SM 2540 C 08/29/2022 11:15 ctl MBAS(foaming agents) Negative 0.1 mg/L 0.52 1 U 08/25/2022 13:51 jba SM 5540 C 08/25/2022 13:54 jba Aggressiveness Index 9.4 1 1 08/24/2022 10:55 fg SM 4500-H+B 08/24/2022 10:55 fg Langelier Index(20°C) -2.5 1 1 I 08/24/2022 10:55 fg SM 4500-H+B 08/24/2022 10:55 fg Nitrate Nitrogen 1.1 0.1 mg/L 10 1 08/25/2022 10:15 ldm EPA 300.0 08/25/2022 13:34 ldm 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. I The RPD for the laboratory duplicate exceeded laboratory 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