Fax cover sheet regarding DEP asbestos matter, Nov 2002

NYC 9/11 Public Portal Document

.NOV.13..2002 4:22PM ROSS & HAARDIES NO.979 P.11

A'

Application; This procedure utilizes wet methods and careful hygiene protocol for cleaning roofs contaminated with asbestos containing material (ACM),

1. The entire roof shall be considered the work area for entry/access determinations. All abatement will be performed by NYSDOL licensed contractors with NYC DEP certified workers.

For nongravel or stone covered roofs with localized accumulations of visible debris, the cleanup areas shall be specified ("specified area") by DEP.

For gravel/stone covered roof surfaces, the entire roof shall be included in the specified roof area for clean-up. The gsaveVstoae shall be taken to a clean-up staging area on the roof and washed. Water shall be collected, filtered, and discharged into the drain/sewer as applicable. 2. A changing area consisting of two adjacent step-off pads located on the roof immediately adjoining the roof entrance/exit. This area shall consist of a clean pad and a change pad. The clean pad shall be adjacent to the building interior access way (or at the point of entry to the roof for exterior access). The change pad shall be adjacent to the contaminated roof areas. Each pad (change pad and clean pad) shall consist of two layers of 10- mil reinforced plastic on the roof/access way surface and shall be large enough to facilitate changing and denonlaruaatiean as described herein. A minimum of 4' x 4' is recorcime;nd, though the exact configuration will be specific to the roof

3, Workers shall fiat step from the building interior (or exterior at the point of entry to the roof) directly onto the clean pad On the clean pad, each worker shall be double suited with disposable coveralls, plastic booties, gloves, head coverings. Rubber boots may be used instead of the plastic booties. The boots shall be wet and

wiped and HEPA vacuumed prior to leaving the roof. Each worker shall wear a nttnimwn of a half-face air- purifying respirator equipped with B PA cartridges, 4. All penetrations at the roof within 10 feet of the specified roof area included in the clean-up shall be cleaned by wet methods/FIEPA vacuum and sealed with 6-mil polyethylene sheeting. S. Roof cleanup shall begin at the, enhancelexit and proceed in a path working away from the entrance/exit Water shall be the primary engineering control to minimize the potential for fiber release. 6. Roof surfaces shall be wetted and then wet cleaned using wet wiping techniques with water, mops, rags, brushes, etc. HEPA vacuuming may also be used as alternative to or in combination with wet cleaning. 7. Throughout the procedure, all personnel entering or existing the roof shall observe a the personal decontamination practices. Attention shall be paid to limiting unnecessary walking on or disturbance of material an the toot These personal decontamination procedures shall be strictly adhered to, in carder to minimize the potential for spreading contamination to the interior of the buildings.

8. Solid nonporous objects, such as metal patio fbtniture, plant potters, and plastic furniture cushions, shall 'be wet objects

such Wooden

damp wiped

- EPA be shall decking as rags,

vacuumed, with wiped,

li and

wet ghtly

bristle brush brushed

local with IAA exhaust. a

utilizing simultaneous misting and

Woven materials shall

either as

be disposed off -site

bagged for removed and

AC1( or

in accordance 29

proper CFR

with laundering

1001. contamination

1901, should

with plants

the unless as disposed be Potted

owner waste ACM visual

and rinsed, will repeatedly requests

be Potted

made decontamination. plants provisions shall be to the

catch

water (i.e. into or

ACM disposal bags by using rigs and HEPA wet runoff

-vacuums).

area 9. After specified shall

the be above, the

of carefully washed. completion

roof

3

Pagan

05/03/02

NYC-WTC 000115610