DEP Fax Cover Sheet, May 2, 2002

NYC 9/11 Public Portal Document vur rax■rio-QSQ-Qoof nay z zuuz iz-oo r.w I

Objective: Evaluate the effectiveness of cle^ up techniques which have been recommended fur apartment clean up, that is, wet wiping, wet moping and use of HEPA filtered vacuums, in preventing inhalation exposure to asbestos and other fibrous materials, as well as other potential indicator compounds. Program: EPA will clean one unoccupied building to confirm and test the techniques. ■Projected Cost: $5 million. This cost is higher than in the above efforts because it will involve sampling for several potential indicators of WTC related contamination before work is commenced, will involve use of several modifications of cleaning techniques with post clean up sampling and re-cleaning jf necessary. Sfato o/Requestfor F£^A mission assignment; Submitted as revised 4/11/02. Awaiting approval. 4. Cleaning of Debris-Laden Unoccupied; Uncleaned Buildings-------- ---------------------------

Objective: Since the debris removal from,the immediate areas of destruction in the WTC complex is nearing completion, the remainn^g unoccupied, mcleaned buildings must be cleaned. This will prevent debris/dust from teing re-entrained in air and/or re-contaminating (he I I nearby areas with debris/dust. I Program: NYC will clean the remaining unoccupied (residential and commercial), unoleaned buildings near the WTC site Hut contain WTC-debris. NYC will work with building owners tn determine reasons that ±ese buildings have not been cleaned yet If building owners are not able to expeditiously clean theti property, NYC will proceed. Projected Cost: $20 million, based upon estimates approximately $2 million/building for 10 buildings. Inventory of buildings is being identified by NYC and may be decreased as a result of NYC’s efforts to get building owners to conduct clean 19. Status o/ReqiiestforFEMA mission assiignment: Awaiting initial FEMA feedback

5._ Clean Up of Ext^ors of Buildlnga yith Residual Debria/Dust

Objective: To eliminate remaining debris/dust resulting from the WTC collapse on building exteriors in Lower Manhattan thereby assuring this material will not become re-entrained in the air at a future time, thus creating a potential exposure to the publie. Program: NYC DEF will contract for the cleaning of the exteriors of approximately 250 buildings in Lower Manhattan. EPA, NYCDTP and OSHA will oversee contractors. Projected Cost: NYC S 16.28 Million Project Period: April 2002 through November 2002 Status ofRequestfor FEMA mission assignment: FEMA funding approved pending resolution of indemnification iseuea.

6. Tdentififyrif^w and II ion of H|VAC SyglemM In Lower Manhiftan

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