US Senate letter regarding WTC environmental protection measures, August 2002

NYC 9/11 Public Portal Document

. ........... ..

Pag? 2-

all of tltMc concerns will be addressed as the program moves forward, as well aa whether you inteaid to expand the geographic scope of the program to include a brooder arsa, that includes all residences and businesses-incluiiLag the Chinatown commtmjty-thai may h^ve been affected by the attacks.

I would also like to take this opportunity to request inforrnation and clarification rsgsrding ±e fcDowing aspects of the scopes of work;

• When is the testing and clearmp work cxpectod to begin, and when is the work expected to be completed? Unhl whal date will people be able to request testing and cleanup assirance-uiU the deadline be cxtcntiMbej'ond Sc-piember 3,2002?

• Tt woL„d sppaar &cm the scopes of work tliat there will bs pre-cleaning and j'ost-cl caning wipe sdn,p\’ng for dioxin, total metals and mercury, as’ well as post-cleaning air smipi-ug for asbestos. Is this the case and, if so, why is there no prs-olcaning air sampling tor asbe.$tos of pro- and poBUcleaaisg wipe sampling for ether coataminants? How were thess contaiahiaals decided on for pre- and post-cleaning sampling?

• Il would appear fiom the scopes of work that there will be pre-clsauirg and post-cJcanicig wipe -amplicg for dioxin, total metals and mercury, as well aa post-cleaming air sampling for asbestos. Is this the case and if so, why is there co pre-e’eaning air sampling for asbestos or pre- anti post-cleaning wips sampling for other contaminants? Hew tl'Ese ccTit.a.minaot£ decided upon for pre- and pa st-cleaning sampling?

* Hew were ssrtpiing and cleanup ccuipmsnt and methodclogi£3 decided upon, including ftp r^besios clcan-up criteria of 0.0C09 SbcrcYc? Is this the criteria tbax achieves the IO"* cancer risk, that was mentioned a, E?A’s fact sheet on the cleanup and testing plan'’ E so, how was the 10‘* risk factor decided upon, versus a more protective risk fiictor of 10-*?

• Why are the filing of asbestos project notification forms, the posting of w«aing signs, and the wearing of personal protective equipment only required during a Scope 3 cleanup? VrTiy is the us© of personal protective equipment .Tcquired orJy during aggressive air sampling activities? Kas the Occupation.^! Safely and Ketdfii Administration (OSHA) been consulted with respect to these of the scopea of work?

• The scope of work for the cleania^ coniTUct indicates that‘HVAC systems that axe determinedL to be iropacted by dust aad debris from the collapse of the World Trade Center will bs cleaned” Kow will it be determined that systems have been impacted? With resjj&ct to individual HVAC intake/discharges, how w-as it decided that only one foot of the ductwork would be cleaned?

" Will ther^ be any notificatioo provided to buikueg residents when any testing or cleanup is taking place io a building, whether ths testiag/cleanup »s being conducted in a rommon area or in an individual unit? How is Z?Aproposing to address concents regarding

I NYC-WTC_000151677