EPA air sampling summary for WTC area, Sept 22, 2001

NYC 9/11 Public Portal Document

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U.S. Environmental Protection Agency Air / Balk / Wipe Sampling Situation Re^rt Saturday, September 22,2001 ( 3r00 put) Fixed Amfaienl Air Sampling Lxx:ations (Asbestos) • NYC/£R (Sept 21,10 AM - 3PM) o AB samples below the OSHA standard (0.1 fZcc) for PCM. o 10 of 13 samples are above flic NYC standard Cw Teentry (0.0117cc). The highest PCM hil was 0.03 i/cc. O SiMup Ie volumes collected were low (i.e.. 240 litffs). When normalized to 121X1 liar volume, S of 10 exceed the AHERA siandard (70S/inm’). New Jersey o Sept 18 through Sept 20 (sampling dates reconfigured) - all less than detectable levels as cited previously.

NYSI stSamcIss Asbestos (Sept 21) - all samples ND or less than 1 %. Scmivolaiile organics (Sept 16)- PAH concentrations were only compouinb with elevated results. Individual compounds were all below EPA removal action guidance. Using TEFs for the individual PAHs (normalized to BaP) the levels appear to approxinoMc the EPA removal actiiMi guidance(10 ppm). This concentration is below Icvds of concern. PC3/ft3liddc (^t IQ - Pesticides detected well below levels of concern. PCBs are below EPA ronoval action guMance levels and below levels of ctmceni. Landfill Air Si ling kxzations (Asbestos) • Sept 20 (7AM - 4:30PM) - AH samples below AHERA standards. - Hudson River Asbestos (Sept 20) - none detetawl.

• Volailc organics (Sept. 21) - Contamination present in background sample. Results lower than previously repotted.

• Nothing of significance identified.

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