NYC-WTC_000199878

NYC 9/11 Public Portal Document

DRAFT

Agency Date Location N N above N above Maximum Comment samples 0.01 OSHA (fibers/cc) fibers/cc * PEL@ NYCDEP 9/22/01 Perimeter of 4 1 0 0.010 PCM Highest value sampled at Murray (continued) controlled zone and Church Battery Park City 6 0 0 0.009 PCM Highest value sampled at River North Terrace and Chambers. No TEM given_____________________ Battery Park City 6 1 0 0.010 PCM Highest at West St. & Albany South also Gateway Plaza Park Ave. 9/23/01 - Perimeter of 11 3 0 0.017 PCM Highest value sampled at Murray 9 /2401 controlled zone and Church. No TEM given. Battery Park City 12 1 0 0.012 PCM Highest value sampled at North North End and Park Pl West. No TEM given. Battery Park City 12 5 0 0.039 PCM Highest value sampled at Rector South Place by City Hall Park. No TEM given.

* Approximately equivalent to indoor clearance level for residences or schools. EPA results by TEM method, NYC-DEP by PCM @ 0.1 fibers per cc by PCM method; US-OSHA permissible exposure limit for 8 hour time weighted average.

Interpretation; Dusty work in control zone or Fresh Kills Landfill continues to have the potential to generate elevated levels of asbestos fibers. Continued use of appropriate respiratory protection for workers in or near potentially dusty locations or tasks is indicated. Dust suppression measures should be enhanced. Additional personal monitoring underway.

o H K I

I o o I o o Draft: 9/26/01,7:20 PM \EnvironmentalMonitoringUpdate_9_26b on Page: 3 of 6 co co o

NYC-WTC_000199880