Document 0qxwrGXQ21YexQbzv3Q2y48em

CM-IUI (BflWWt) E. 1. du Pont de Nemours & Company Wilmington. Delaware 19898 CC M. A. Garrahan OSHA Office of Compliance Program 3rd & Constitution Ave., N.W. Washington, DC 20215 ENGINEERING DEPARTMENT LOUVIERS BUILDING July 26, 1979 Mr. Grover Wrenn Directorate of Federal Compliance and State Program Occupational Safety and Health Administration Room N-3112 3rd Street and Constitution Ave., N.W. Washington, DC 20215 Dear Mr. Wrenn: In the process of developing a compliance training package covering OSHA standards on asbestos, a question has arisen on respirator requirements for spraying, demolition, or removal of asbestos. The standard requires in Section 1910.1001 (c) (2) (iii) that "employees engaged in the spraying of asbestos, the removal, or demolition. . . shall be provided with respiratory equipment in accordance with paragraph (d) (2) (iii)..." Section (d) (2) (iii) describes conditions for which air supplied respira tors are required. I have contacted Mary Anne Garrahan of the OSHA Office of Com pliance concerning this matter. She agreed that where it has been clearly demonstrated that the wet method or engineering controls is effective and monitoring has shown that ceiling or 8-hour time weighted average airborne concentration of asbestos fibers are reasonably expected to be below 100 times the limits, respirators as described in 1910.1001 (d) (2) (i) and (ii) may be substituted. I am writing this letter to confirm this and obtain your approval. Your help is greatly appreciated in this matter. Very Truly yours, ENGINEERING SERVICE DIVISION 'Occupational Environmental Control Group J2--Meyer Engineer - Industrial Hygiene / DU 062032