NYC 9/11 Public Portal Document
d i round ■ 'tU
Metals: OSSA has taken a total of 1117 samplcs^c^u^g bulk a^blank samples)
to monitor worker exposures to dusts, fomes, oxides, and other compounds of
metals such as antimony, betySima, chromium, cobalt, copper, iron, lead,
oMngaaeae, mercury, molybdenum, nickel,^wi^ium, zin<^ cadmium,
m»2nBsiuni, and arsenic. Results from these samples are generally well below
the applicable OSHA limits, However/uOTfe>U«afgaa4hMt4iiig structural
steel at foe rubble pile have resulted in instances of overexposures as follows:
copper (13); iron oxide (26); lead (17); antimony (1); and cadmium
Accordingly, OSHA is recommeadiog that -weiken aia«is»d in &ese
operations wear appropriate rw»plra4^^*^^6h.*il^iA^Smatioa bdow for
the specific counts in regnrde to morctny.
Mercury OSHA hat taken 224 air samples for faoi^^c noemy. No meicisy was
detected. Also,36bulksamplesi«wously^^lcc^fi^nibble were re
analyzed for mercury and none wasdetected. Additionally, 10 bulks woe
taken on 1/3, with one sample dete^^n^h^JI^MJ.^fefti sad ciae samples
did not contain mercury, 38 bulk sidles 1/8 and
1/11/02; results iadicate 0.1 to 02 the footprint of
BIdg.-6, andinthcprt betweBaWTO'iWtWOiasitb Kui
\ • r• ‘P
Ionizing RadhiUon: A swvwyrfthembWe pile was conducted on 10/22-1 (V23 to check for latent
radiation with particular attentioa to alpha radiation. Results show no
elevated levels of concern from other known baSding latent radiatien sources
or any terrorist oigin source xnateri^ ‘
3 i ere pH 7 neut
f raieil K, , clev
y; .'uhiy days levs
Page 4 of 4
didn’t think it
t?S:32 2003 8T JBW
N YC-WT C_000144657
OCR can misread numbers and units. Confirm readings against the page image before using them.