Document from 55 Liberty Street Folder

NYC 9/11 Public Portal Document

FROM :. GPAGAMGMUJGDA !-P.X No. : 21276613 May. O2 2CO2 OE:45PM P4

55 Liberty Apt 5A

Exposare Ctltwls dust eontamine"aoa of bui144af The ASTM method is intecded fbr guidance on examining of the building. There is no suggestion in the surfsocs and as a general assessmea1 risk from asbestos exposure, ASTM method that it can be used to assess geneisl health levels published iai the nor does it Suggest that all building surtheos be maintained to the concernratiots of standard. The method is generally applicable for the estimaton of the centimeter asbestos fibers on surfaces starting from approtdmtelY It10C $bars p scare (Ccm2). Asbestos is a human oareiaog5tt and exposure oeeuts when the fibers are inhaled into the hugs. The presence of elevated levels of asbestos dust on surf$ees may result in result in increased exposure to asbestos. agborae fibers ifthe dust is disturbed. This may found a Leval of 10,000 In buildings with asbestos containing meterlale its them we have settled dust. There structures pa square centimeter to be a reasonable baseline level in she 1evol of 1000 were no suspect asbestos contaIning materials in the aparrment and s/amt is coed as a erardard Trait of0.01 fibers per The State of New York has recommended an airboca a exposure to a :eve1 U cubic ccmimeter, however,exposure to any carcinogen should be maintained atioo on the level of low as reasonable achievable. This method doss not provide b fez asbestos settled onto airborne exposwe. but instead provides at aesessaaent ofthe level of exposure should surfaces but it ma; provide information on the potential for contaminated duct become airborne_

Fiadiap az:d window A visual inspection revealed the presence of heavy rust on the windows bedroom and In the bath ooei. frames.The iamcr winnow was open the mater a

Dust sample: r_e asbestos Seven tcarxovac deist sample sad a blank were coilected to determine levels of the window►. dust in the couch, linen ocver on the couch, on the floor, on a chair, and on The following sun xnarizes the results. The preliminary lab report is attached to this report.

Sanplc #1 — The field blank had no eaructures detected an the filter material. This is an acceptable level fora field blank.

Sa rple * 2 — Taken frcm the couch in the living room. The couch bad been cleaned twice, but it was located near the terrace door where the most debris reportedly entered the apartment. The sample had 5,550 s/cm2. This ex000ds the recommended :: 000 s/crn2 limit

Sample *3— This sample was taken from the linen cover on the couch. The cover bad ban dry cleaned twice. It had reportedly beets covered with a layer of dust efer the building collapse. The sample bad 1850 sicm2 This is a low level but is aliP,htly above the 1000 a/em2 limit.

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NYC-WTC 000108310