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Scientific Investigations Report 2007–5075

Scientific Investigations Report 2007–5075

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Conversion Factors, Datums, Abbreviations and Acronyms

Conversion Factors

Multiply By To obtain
inch (in.) 2.54 centimeter (cm)
inch (in.) 25.4 millimeter (mm)
foot (ft) 0.3048 meter (m)
mile (mi) 1.609 kilometer (km)
inch per year (in/yr) 2.54 centimeter per year (cm/yr)
pounds per acre (lb/acre) 1.121 kilograms per hectare (kg/ha)

Temperature in degrees Celsius (°C) may be converted to degrees Fahrenheit (°F) as follows:


Temperature in degrees Fahrenheit (°F) may be converted to degrees Celsius (°C) as follows:


Specific conductance is given in microsiemens per centimeter at 25 degrees Celsius (µS/cm at 25 °C).

Concentrations of chemical constituents in water are given either in milligrams per liter (mg/L) or micrograms per liter (µg/L).


Vertical coordinate information is referenced to the National Geodetic Vertical Datum of 1929 (NGVD 29).

Horizontal coordinate information is referenced to the North American Datum of 1983 (NAD 83).

Altitude, as used in this report, refers to distance above the vertical datum.

Abbreviations and Acronyms

Abbreviations and Acronyms Meaning
LIDAR Light Detection and Ranging
MCL maximum contaminant level
NAWSI Naval Air Station Whidbey Island
NWQL National Water Quality Laboratory
TOC total organic carbon
USEPA U.S. Environmental Protection Agency
USGS U.S. Geological Survey

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