Should West Valley fault (UT) be considered low probability?

[pmpowers-usgs]

Migrated from usgs/nshm-cous-2014#9

Discussions with Kathy Haller while fixing bugs in the 2014 fortran code/model suggest that West Valley (Wasatch) should be considered a low probability of occurrence fault with a weight of 0.25.

Comment from Kathy: The West Valley fault was implemented having variable width in the 2008 model depending on the combination of dips of the West Valley and the Wasatch fault. Haller supports re instituting variable width so that the representation of the West Valley does not support a geologically unlikely relation with the Wasatch in that it cuts through the regional master fault.