Building 922 Soundproof Rooms 228, 239 and 240
CX(s) Applied: B1.29, B2.1
Location(s): Allegheny City, Pennsylvania
Office(s): National Energy Technology Laboratory
Remove and replace walls, add sound proofing, install insulated return air ducts--insulation shall be rated for sound attenuation, install sound proofing device on door bottoms, paint walls, replace ceiling.