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January 30, 1997 LAB No: STK 730422-6 <br /> Luhdorff & Scalmanini , Consulting Eng. Sampled January 21, 1997 <br /> Sample Site: Quarterly Water Sampling <br /> Description: Browns #1 Sample type: Drinking Water <br /> General Mineral Analytical Results <br /> CONSTITUENT METHOD UNITS DLR RESULTS MCL <br /> Aggressiveness Index Calc. --- 0.1 12.3 <br /> Langlier Index (Corrosivity) 0.1 0.4 <br /> pH 4500-H B --- 7.7 <br /> E.C. 2510B umbos/cm 1 870 1600 (b) <br /> TDS =(Residue at 180°C) 25400 mg/L 40 560 1000 (b) <br /> TDS (by Summation) Calc. mg/L 1 692 <br /> MEAS 5540C mg/L 0.05 ND 0.5 <br /> Boron (B) 200.7 mg/L 0. 1 1 .2 <br /> Copper (Cu) 200.7 ug/L 30 ND 1000 <br /> Iron (Fe) 200.7 ug/L 30 4900 300 <br /> Manganese (Mn) 200:7 ug/L 30 110 50 . <br /> Zinc (Zn) 200.7 ug/L 30 130 5000 <br /> ND = Not Detected greater than or equal to the DLR. DLR = Detection Limit for Reporting purposes <br /> MCL = Maximum Contaminant Level (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 Water Standards. <br /> FGL ENVIRONMENTAL <br /> Charles Jo son, B.S. <br /> Laborato Manager <br /> CJ:jgc <br />