NYCDOH/ATSDR residential asbestos sampling results, April 2002

NYC 9/11 Public Portal Document

I .____________ ; 04/03/02 DRAFT: not for public release

Ambient and Indoor Sampling for Public Health Evaluations of Residential Areas Near World Trade Center, New York, New York (November 4 - December 11, 2001) : . ■-: _ j. ._ ; ■ i___ ।__ Results were compared to dust and air levels found in homes located in "non-impacted" areas and to indoor asbestos standards. At each sampled building, attempts were made to sample in a common area, two residences, and an adjacent outdoor location. ; '' Dust: ! ■ ! - _I ! I 1__________ ,_____ _____ :. J .. z:__ ±: I If PLM was less than 1%*, confirmation by TEM was performed If TEM was less than 1%, no further action was taken. If TEM was greater than 1%, further action was taken. 'if PLM was greater than 1%, confirmation by TEM was unnecessary and further action was taken. ' ! [r . ! I r' I ------- Air: If PCM was less than 0.003** f/cc, no further action was taken. If PCM was greater than 0.003 f/cc, confirmation by TEM was performed. If TEM was less than 0.01 f/cc, no further action was taken. I If TEM was greater than 0.01 f/cc (did not occur), further action would have been needed. If PCM is greater thaji O.OI**^ f/cc, cojifirmation by TED^was performed.

• A material is considered to be asbestos-containing materiai if it contains more than 1% asbestos using the PLM method. When asbestos was detected, only Chrysotile asbestos was found. __J_________ |__________ । ________ J ** 0.003 is the upper range (0.001_- 0.003) of background indoor air fiber concentrations determined in non-impacted areas. T" Asbestos clearance criteria. Rules of the City of New York, Title 15, Chapter 1, ; ; ■{ TzzEZTzrzqzzzzz:: Results for Asbestos in Air and Settled Dust I - -! Building Asbestos in Asbestos in Asbestos in ” I Location Fibers in Air Number Dust Dust Air -____ 1____ ... 1_____ - _______ ___________ Residential Buildings in Lower Manhattan

I I : Building 1 I J PLM [%] TEM [%] PCM [f/cc] I TEM [f/cc] _ I 1 Outside 1 .Common 1|Res 1 .nd I Not Sample^ ND No2_Sa_mpled ' Not Sampled ] 0.001 <.001 , Not Sampled I__ 0.006 Not Sampled [ <.001 •L 4----- _ NA NA <•001 FZ: 1 Res2 ND NA Building 1 Notes: PCM results at Res 1 exceeded 0.003 f/cc. Asbestos fibers were not detected in this sample by TEM analysis. ' There was not enough material left to analyze the outdoor and residential dust samples by TEM.

Building 2 PLM [%] TEM [%] PCM [f/cc] TEM [f/cc] ' 2 ^Outside 0.003 NA_ 2 Common ND ' Not Sampled 0.005 <.001 2 Resi ND Not Sampled <.001 NA 2'Res2 ND , Not Sampled 0.002 NA 2 Window Sill <1 <1 NA NA 2' Outside X_ 1 j Not Sampled | 1.3 NA NA Building 2 Notes: DEP inspected and found asbestos-containing material in the outdoor location which was then professionally abated. PCM results exceeded 0.003 f/cc in the common area. Asbestos fibers were not detected in this sample by TEM analysis. There was not enough material left to analyze the indoor dust samples by TEM. I Building 3 , i ______ -L_ j PLM [%] i TEM [%] 1 PCM [f/cc] I TEM [f/cc] 3 Outside I Not Sampled . Not Sampled I <.001 NA

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