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1 <br />I <br />CONVERSION FACTORS AND ABBREVIATIONS <br />To obtain <br />acre <br />4,047 <br />square meter <br />acre -foot (acre -ft) <br />1,233 <br />cubic meter <br />acre -foot per year (acre - ft/yr) <br />1,233 <br />cubic meter per year <br />cubic foot per second (ft3 /s) <br />0.02832 <br />cubic meter per second <br />foot (ft) <br />0.3048 <br />meter <br />inch (in.) <br />25.4 <br />millimeter <br />mile (mi) <br />1.609 <br />kilometer <br />million gallons per day (Mgal /d) <br />0.04387 <br />cubic meter per second <br />ounce (oz) <br />0.0283 <br />kilogram <br />pound (lb) <br />0.4536 <br />kilogram <br />pound per acre (lb /acre) <br />0.000112 <br />kilogram per square meter <br />square mile (mil) <br />2.590 <br />square kilometer <br />ton <br />0.9022 <br />megagram <br />ton per year (ton /yr) <br />0.9022 <br />megagram per year <br />Temperature in degree Celsius ( °C) can be converted to degree Fahrenheit ( °F) as follows: <br />OF = 1.8 ( °C) + 32 <br />Temperature in degree Fahrenheit ( °F) can be converted to degree Celsius ( °C) as follows: <br />°C = ( °F - 32)/1.8 <br />ADDITIONAL ABBREVIATIONS <br />mg /L milligram per liter MCL Maximum Contaminant Level <br />µg/l, microgram per liter µg /g microgram per gram <br />Sea level: In this report "sea level' refers to the National Geodetic Vertical Datum of 1929 (NGVD of 1929) - -a geodetic datum derived from <br />a general adjustment of the first -order level nets of both the United States and Canada, formerly called Seal Level Datum of 1929. <br />CONTENTS VII <br />