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BLMPCA coverage is a product of the work of volunteer Jim Catlin, a
graduate student from UC Berkeley. Catlin used the best sources
available at the time (1994) to compile BLM CA administrative boundaries
on to 100k base. Administrative boundaries for BLM in CA extend into a
portion of NW Nevada. Difficulty was encountered in the Carson City area,
where a small portion of CA is administratively under the contro of
BLM NV. This boundary has since been addressed by the finding of
additional documentary information.
The data contains a mixture of sources, but overall is rated as from 1:100,000 source. Users should exercise caution in its use. The data holds up well to scales approaching 1:24,000 - particularly depending on which area is being used. Attention should be paid to the sources of the arcs.
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