Conversion Factors 3.14 89

1 mg/kg or 1 ppm or 1 mg/L = 0.0022 pounds/ton or 0.0001% 1% = 10,000 mg/L 1 mg/L = 1,000 µg/L. Area. 1 square foot = 144 square inches 1 square yard = 9 square feet 1 square mile = 640 acres or 1 section 1 square meter = 10.764 square feet 1 square meter = 10,000 square centimeters 1 acre = 1 acre-foot43,560 square feet ................
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