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This document is one I found online. It was originally created by the Magna Utah Stake in 1997 and contains a variety of useful preparedness information.
Among the more interesting items are a list of individual, ward, stake, and district responsiblities in an emergency. It also has a map with a possible use of a standard church building in an emergency.
It's targeted at the Magna Stake, but much of the information is universal, including the information on preparing for earthquakes and winter storms.