Forwarding WTC air monitoring scope for final review, Aug 2002

NYC 9/11 Public Portal Document

Environmental Protection Agency §763.92 (c) Cleaning—(I) Initial cleaning. Un­ small-scale, short-duration mainte­ less the building has been cleaned nance activities, shall be designed by using equivalent methods within the persons accredited to design response previous 6 months, all areas of a school actions and conducted by persons ac­ building where friable ACBM, damaged credited to conduct response actions. or significantly damaged thermal sys­ (f) Fiber release episodes—W Minor tem Insulation ACM, or friable sus­ fiber release episode. The local education pected ACBM assumed to be ACM are agency shall ensure that the proce­ present shall be cleaned at least once dures described below are followed in after the completion of the Inspection the event of a minor fiber release epi­ required by §763.85(a) eind before the sode (i.e., the falling or dislodging of 3 Initiation of any response action, other square or linear feet or less of friable than O&M activities or repair, accord­ ACBM): 5 ing to the following procedures: (1) Thoroughly saturate the debris (I) HEPA-vacuum or steam-clean all using wet methods. carpets, (ii) Clean the area, as described in (11) HEPA-vacuum or wet-clean all paragraph (e) of this section. other floors and all other horizontal (ill) Place the asbestos debris in a surfaces, sealed, leak-tight container. (111) Dispose of all debris, filters, (iv) Repair the area of damaged ACM mopheads, and cloths In sealed, leak- with materials such as asbestos-free tight containers, spackling, plaster, cement, or insula­ (2) Additional cleaning. The accredited tion. or seal with latex paint or an management planner shall make a encapsulant. or immediately have the written recommendation to the local appropriate response action Imple­ education agency whether additional mented as required by §763.90. cleaning is needed, and if so, the meth­ (2) Major fiber release episode. The ods tind frequency of such deeming. local education agency shall ensure (d) Operations and maintenance activi­ that the procedures described below are ties. The local education agency shall followed in the event of a major fiber ensure that the procedures described release episode (I.e.. the falling or dis­ below to protect building occupants lodging of more than 3 square or linear shall be followed for any operations feet of friable ACBM): and maintenance activities disturbing (i) Restrict entry into the area and friable ACBM; post signs to prevent entry into the (1) Restrict entry into the area by area by persons other than those nec­ persons other than those necessary to essary to perform the response action. perform the maintenance project, ei­ (11) Shut off or temporarily modify ther by physically isolating the area or the air-handling system to prevent the by scheduling, distribution of fibers to other areas in (2) Post signs to prevent entry by un­ the building. authorized persons, (ill) The response action for any (3) Shut off or temporarily modify major fiber release episode must be de­ the air-handling system and restrict signed by persons accredited to design other sources of air movement. response actions and conducted by per­ (4) Use work practices or other con­ sons accredited to conduct response ac­ trols, such as, wet methods, protective tions. clothing, HEPA-vacuums, mini-enclo­ sures, glove bags, as necessary to in­ §763.92 Training and periodic surveil­ hibit the spread of any released fibers, lance. (5) Clean all fixtures or other compo­ (a) Training. (1) The local education nents in the immediate work area, agency shall ensure, prior to the imple­ (6) Place the asbestos debris and mentation of the O&M provisions of other cleaning materials In a sealed, the management plan, that all mem­ leak-tight container. bers of its maintenance eind custodial (e) Maintenance activities other than staff (custodians, electricians, heating/ small-scale, short-duration. The response air conditioning engineers, plumbers. action for any maintenance activities etc.) who may work in a building that disturbing friable ACBM, other than contains ACBM receive awareness

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NYC-WTC_000139274