Reference:BENCHMARKS

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BENCH-MARKS (topographic maps)

Identified on topo maps as: XBM636. This number is the elevation rounded off to the nearest foot.

To acquire data associated with BM call USGS Monuments & Controls (303) 202-4400.

May be a National Geodetic Survey BM. Check web page http://www.ngs.noaa.gov/

For info on topo maps, see http://infodome.sdsu.edu/research/guides/maps/topo.shtml


MD

4/02

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