License agreement for exterior cleanup, 60 Broad Street, 2002

NYC 9/11 Public Portal Document

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

1- The entire roof shall be considered the work area for performed by NYSDOL licensed entry/access determinations. All abatement will be contractors with NYC DEP certified workers. For non-gravel or stone covered roofs with localized accumulations specified ("specified area") by DEP. of visible debris, the clean-up areas shall be For gravel/stone covered roof The gravel/stone shall be taken surfaces, the entire roof shall be included in the specified roof area for clean-up. fi ltered, and discharged to a clean-up staging area on the into the drain/sewer as applicable. roof and washed. Water shall be collected 2. A changing area consisting of two adjacent ice/exit- This area shall consist of a step.off pads located on the roof immediately adjoining the roof boding interior access way (or at the clean pad and a change pad. The point of entry to the roof for clean pad shall be adjacent to the djacent to the contaminated roof areas. exterior access). The 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 decontamination as described herein. A large enough to facilitate chanting be specific to the roof minimum of 4' x 4' is recommend, though the exact configuration and gurarion will 3. Workers shall first step from the clean pad. On the clean pad, building interior (or exterior at the point of entry to the roof) directly each worker shall be double suited onto the gloves, and head coverizngs_ with disposable coveralls, plastic booties, Rubber boots may be used instead of wiped and HEPA vacuumed prior the plastic booties. The boots shall be to leaving the roof. Each wet punif nig respirator equipped worker shall wear a minimum of a half with HEPA cartridges. face air- 4. All penetrations at the roof within 10 feet of the specified roof area wet methods/HEPA vacuum included in the clean-up shall be cleaned by and sealed with 6--trail polyethylene sheeting... S. Roof cleanup shall begin at the entrance/exit and Water shall be the primary proceed in a path working away from the engineering et .►trot to minimize the entrance/exit potential for fiber release. 6. Roof surface$ shall be wetted and :hers wet cleaned brushes, etc. 'EPA vacuuming may using wet wiping techniques also be used as alternative to or with water, mops, rags, in combination with wet cleaning, 7 Throughout the procedure, all personnel entering or existing decontartaination practices. Attention shall be paid to limiting the roof shall observe the personal material on the roof. These unnecessary walking on or personal decontamination procedures disturbance of minimize the potential for spreading shall be strictly adhered to, in order to contamination to the interior of the buildings. 8. Solid nonporous objects, such as metal patio f inure, wiped with damp rags. plant potters, and plastic furniture Wooden objects such as decking cushions, shall be wet bra Ixscl with a bristle brush shall be 'EPA vacuurne utilizing simultaneous nu wet wiped, and lightly either be disposed as ACM or A vii materials shall bagged and removed off-site for 1901. 1001. Potted plants with proper al dering in acorder ce visual contamination should be di with 29 CFR :'-requests decontamination,. as ACM waste unless the owner m Potted plants will berepeatedly rinsed, ~o~ (i.e. into ACM disposal bags and provisions shall be rtaade to or by using rags and HEPA wet catch the -vacuums). 9. .After completion of the above, the specified area roof shall be carefully washed.

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NYC-WTC 000118368