The FIRElocâ„¢ series of buildings offer safe, secure storage for hazardous materials. Available in a range of sizes with a variety of electrical options, these units have a built-in sump with a floor that exceeds 1,000 psf. The buildings meet EPA, NFPA and OSHA standards and offer uni-directional and bi-directional fire ratings, explosion-relief construction and are FM approved.U.S. Chemical Storage, Boone, NC.