Scope of work exhibit, 60 Broad Street, 2002

NYC 9/11 Public Portal Document / ae/ 2 12 , 16:23 2124838895 CRG PAGE 12

Roof Clean-T p Application: This procedure utilizes wet with asbestos containing material methods and careful hygiene protocol for cleaning (ACM). roofs contaminated

I. The entire roof shall be considered the work area for entry/access performed by NYSDOL licensed contractors with determinations. All abatement will be NYC DPI certified workers. For non-gravel or stone covered roofs with localized accumulations of visible debris, the clean-up specified ("specified area") by DEP. areas shall be For gravel/stone covered roof surfaces, the entire roof shall be included in the The gravel/stone shall be taken to a specified roof area for clean-up. filtered, and discharged into the clean-up staging area on the roof and washed. Water shall drain/sewer as applicable. be collected,

2 A changing area consisting of two adjacent step entr~.nee/exit. This area shall consist of a -of pads located on the roof immediately adjoining the roof clean pad and a change pad. The clean pad shall buiding interior access way (or at the point be adjacent to the of envy to the roof for exterior access). The djacent to the contaminated roof areas. change pad shall be mil reinforced plastic on the Each pad (change pad and clean pad) shall consist of two layers of 10- roof/access way surface and shall be large decontamination as described herein. A minimum 4' enough to facilitate changing and be specific to the roof. of x 4' is recommend, though the exact configuration will 3. Workers shall first step from the building interior (or exterior at the point of entry clean pad. On the clean pad, each to the roof) directly onto the worker shall be double suited with gloves, and head Coverings_ Rubber disposable coveralls, plastic booties, boots may be used instead of the plastic wiped and HEIR, vacuumed prior to booties. The boots shall be wet leaving the roof. Each worker shall wear purifying respirator equipped with HEPA a minimum of a half-face air- cartridges. 4. All penetrations at the roof within 10 feet of the specified roof area wet methods/HEPA vacuum and sealed included in the clean-up shall be cleaned by with 6-mil polyethylene sheeting.. S. Roof cleanup shall begin at the entrance/exit and proceed in a Water shall be the primary engineering path working away from the entrance/exit. cc:.rtrol to minimize the potential for fiber release. 6. Roof surfaces shall be wetted and ;hen wet cleaned using wet wiping brushes, etc. HEPA vacuuming may also techniques with water, mops, rags, be used as alternative to or in combination with wet cleaning. 7. Throughout the procedure, all personnel entering or existing decontamination practices. Attention shall be paid to the roof shall observe the Personal material on the roof. These per limitin unnecess ' walking on or disturbance of sonal decortamu~ation procedures $ minimize the potential for spreading con shall be strictly adhered to, in order to tamination to the interior of the buildings. S. Solid nonporous objects, such as Metal patio furniture~ Plant potters, wiped with damp rags. Wooden and plastic furniture cushions, shall be wet objects such as decking shall be HEPA brriixxxi with a bristle brush utilizing vacuumed, wet wiped, and lightly either be disposed as ACM or bagged simultaneous misting and local HEPA exhaust. Woven materials shall and 1901. 1001. Potted plants with visual removed off-site for proper laundering in accordance with 29 CFR requests decontamination. Potted plantscontamination should be disposed as ACM waste unless the owner will be repeatedly rinsed, and runoff water (i.e. into ACM disposal bags provisions shall be made to catch the or by using rags and HEPA wet -vacuums). 9. After completion of the above, the specified area roof shall be carefully washed.

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