Document zGe7BGarvLapJy0rwzam3RQz

DOW CHEMICAL U.S.A. July 13, 1982 LOUISIANA DIVISION P O SOX 150 PLAQUEMINE. LOUISIANA 70754-0150 504 389-8000 TO: All Personnel RE: Hearing Protection Areas Are Now Redefined Effective immediately, some areas of Cnlor-Alkali II will not require hearing protection to be worn. The areas that require hearing protection are bordered by a painted yellow hearing protection required boundary line. These areas are: 1. MC-520 (freon compressor) in Liquefaction - inside the boundary requires hearing protection. 2. Chlorine compressor deck. 3. Entire Caustic area. 4. Entire Power area including the Cell rectifiers. All other areas of the plant do not require ear protection. ber AN OPERATING UNIT F THE DOW CHEMICAL COMPANY DO 079852 CONFIDENTIAL