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Q <br /> January 30, 1997 LAB No: STK 730422-5 <br /> Luhdorff & Scalmanini, Consulting Eng. Sampled January 21, 1997 <br /> Sample Site: Quarterly Water Sampling <br /> Description: Hall Sample type: Drinking Water <br /> General Mineral Analytical Results <br /> CONSTITUENT METHOD UNITS DLR RESULTS MCL 0 <br /> Aggressiveness Index Calc. --- 0. 1 12.2 <br /> Langlier Index (Corrosivity) 0.1 0.4 <br /> pH 4500-H B --- 7.6 <br /> E.C. 2510B umbos/cm 1 1000 1600 (b) <br /> TOS (Residue=-at 180°C) 25400 mg/L 40 640 1000 (b) <br /> TDS (by Summation) Calc. mg/L 1 720 <br /> MBAS 5540C mg/L 0.05 ND 0.5 <br /> Boron (B) 200.7 mg/L 0.1 0.5 <br /> Copper (Cu) 200.7 ug/L 30 ND 1000 <br /> Iron (Fe) 200.7 ug/L 30 ND 300 <br /> Manganese (Mn) 200.7 ug/L 30 ND 50 <br /> Zinc (Zn) 200.7 ug/L 30 ND 5000 <br /> ND = Not Detected greater than or equal to the DLR. DLR =Detection Limit for Reporting purposes <br /> MCL = Maximum Contaminant Levet (California Health & Safety Code, title 22) <br /> ug/L = Micrograms per Liter (ppb) mg/L = Milligrams per Liter (ppm) <br /> (b) Upper limit, Mineralization - Secondary Drinking Nater Standards. . <br /> FGL 7NIENTAL <br /> Charles J son, B.S. <br /> Laborato Manager <br /> CJ:jgc <br />