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VUL <br /> • <br /> ENVIRONMENTAL <br /> Analytical Chemists <br /> June 10, 2025 <br /> Lab No. : STK2537025-003 <br /> Luhdorff& Scalmanini, Consulting Eng. Customer No.: 3012023 <br /> Description South Tracy #3 Matrix : Drinking Water <br /> Project Water Monitoring Sampled On : May 14, 2025 at 09:27 <br /> Drinking Water Interpretations <br /> Summary: Your water was acceptable for all items tested on this sample report. Details are presented below: <br /> Constituent Result Units MCL Result Compared to MCL <br /> Inorganic-Primary Less Than or Equal Exceeded <br /> Fluoride 0.3 mg/L 2 PASS <br /> Nitrate + Nitrite as N 3.5 mg/L 10 PASS <br /> Nitrate as NO3 15.5 mg/L 45 PASS <br /> Nitrate Nitrogen 3.5 mg/L 10 PASS <br /> Nitrite as N ND mg/L 1 PASS <br /> Zinc ND ug/L 5000 PASS <br /> Inorganic-Secondary Less Than or Equal Exceeded <br /> Chloride 69 mg/L 500 PASS <br /> Copper 20 ug/L 1000 PASS <br /> Iron 30 ug/L 300 PASS <br /> Manganese ND ug/L 50 PASS <br /> MBAS, Calc. as LAS, MW 320 ND mg/L 0.5 PASS <br /> Specific Conductance 867 umhos/cm 1600 PASS <br /> Sulfate 182 mg/L 500 PASS <br /> Total Dissolved Solids 540 mg/L 1000 PASS <br /> Other Less Than or Equal Exceeded <br /> Copper 20 u /L 1300** PASS <br /> Drinking Water Interpretations without MCL <br /> Constituent Result Units - Range Interpretation <br /> Aggressiveness Index 12.7 --- >12 Non-Aggressive. <br /> Langelier Index(20°C) 0.8 - >0 <br /> Water is supersaturated with respect to calcium carbonate <br /> (CaCO3)and scale forming may occur. <br /> Drinking Water Interpretations without MCL <br /> Constituent Result Units Range Interpretation <br /> Aggressiveness Index 12.7 - 1 >12 ,Non-Aggressive. <br /> Langelier Index(20°C) 0.8 _ >0 Water is supersaturated with respect to calcium carbonate <br /> (CaCO3)and scale forming may occur. <br /> ND=Non-Detect <br /> Definitions <br /> MCL The maximum level at which a constituent may be present and be considered acceptable for potability or aesthetics. <br /> Primary Items listed as primary are regulated because of health concerns.If there is a failure for a primary constituent <br /> treatment is normally required. <br /> Section:Drinking Water Interpretations Page 15 of 21 Page 15 of 21 <br /> Corporate Offices&Laboratory Office&Laboratory Office&Laboratory Office&Laboratory Office&Laboratory <br /> 853 Corporation Street 2500 Stagecoach Road 563 E.Lindo Avenue 3442 Empresa Drive,Suite D 9411 W.Goshen Avenue <br /> Santa Paula,CA 93060 Stockton,CA 95215 Chico,CA 95926 San Luis Obispo,CA 93401 Visalia,CA 93291 <br /> TEL:(805)392-2000 TEL:(209)942-0182 TEL:(530)343-5818 TEL:(805)783-2940 TEL:(559)734-9473 <br /> 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 <br />