NYC-WTC_000234815

NYC 9/11 Public Portal Document

DRAFT

Environmental Monitoring Update Data reported to NYC DOH 9/25/01 as of 4 pm

Asbestos Ambient air monitoring

Agency Date Location N N above N above Maximum Comment samples 0.01 OSHA (fibers/cc) fibers/cc * PEL @ USEPA 9/21/01- New Jersey 12 0 0 All were less than detection 9/22/01 limit; highest detection limit was <0.006 by TEM.______________ 9/21/01- Inside controlled 10 0 0 0.007 by Highest was Location #E at 9/22/01 zone PCM South End and Liberty. TEM was <0.004. 9/21/01- Perimeter of 3 0 0 All were less than detection 9/22/01 controlled zone limit; highest detection limit was <0.004 by TEM.______________ 9/21/01- Neighborhood near 5 0 0 All were less than detection 9/22/01 controlled zone limit; highest detection limit was <0.006 by PCM. 9/21/01- Fresh Kills Landfill 11 0 0 All were less than detection 9/22/01 limit; highest detection limit was <0.008 by PCM.______________ ConEd 9/21/01- Inside controlled 17 0 0 0.008 PCM Max values recorded at Albany 9/23/01 zone and West & also at WTC plaza. No TEM given. 9/21/01- Perimeter of 3 0 0 0.007 PCM Max value recorded at Church o 9/23/01 controlled zone and Fulton. No TEM given. H 9/21/01- Neighborhood near 1 0 0 0.003 PCM Max value recorded at Park Row to 9/23/01 controlled zone and Greenwich. No TEM given. s O I—i o o I o o o Draft: 9/25/01, 8:22 PM \EnvironmentalMonitoringUpdate_9_25 to to Page: 1 of 6

cn

NYC-WTC_000234815