HMGP Murray Wennerlund Sept. 21, 2016 HMGP FEMA Hazard Mitigation Grant Program. FEMA Hazard Mitigation Grant Program. The process is long, the rewards are great. I'll be offing our first hand experiences with the waiting for news on a HM Grant. It seems most people give up waiting after one year. I'll share some tips on how to make it work for you even out of a declared disaster zone.