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NYC-WTC_000204879
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NYC 9/11 Public Portal Document
U.S. Environmental Protection Agency Sampling Situation Report Sunday, September 23, 2001 (2:00 pm) fixed Ambient Air Sampling Locations (Asbestos) NYC / ER (Sept. 19. 10 AM - 8PM) O 13 samples (including 1 duplicate) analyzed by PCM showed that 10 of these 13 samples were at or above the OSHA standard (0.01 f/cc) for PCM. Upon confirmatory TEM analysis 2 samples out of 10 were greater than the AHERA standard (70S/mm^). (Note: Sample volumes collected were lower than the recommended volumes. When normalized to 1200 liter volume, 2 samples exceeded the AHERA standard of 70S/mm\) O These two samples results were 76.78 and 76.93 s/mm2 and were at locations B (Intersection of Church and Dey) and E (Intersection of Liberty and South End Avenue). Both these samples are within the immediately impacted area. Fixed Ambient Air Sampling Locations (Asbestos) NYC / ER (Sept.21-22, 4PM - 4AM) o 13 samples (including 1 duplicate) analyzed by PCM showed only 1 of these samples marginally exceeding the OSHA standard (0.01 free) for PCM. Upon confirmatory TEM analysis no exceedance of the AHERA standard (70S/mm^) was noted. (Note: Sample volumes collected were lower than the recommended volumes. When normalized to 1200 liter volume, no samples exceeded the AHERA standard of 70S/mm^)
New Jersey o Sept 20 - all 4 samples showed less than detectable levels NYC Bulk/Dust Samples One sample taken from the Tower 2 Beam on Sept. 21 had non-dctectable levels of asbestos
Landfill Air Sampling locations (Asbestos and PM) 10 air samples taken on Sept. 22 had no detectable levels of asbestos Dust continues to be monitored at the site for dust suppression measures through the use of personal monitors Direct Reading Instruments • Nothing of significance identified.
Ambient Sampling & Rector Street Runoff Resampling
Results from metals, PAHs and TSS analysis showed no exceedances of levels of concern I
CITY_21MC100_006753488
NYC-WTC_000204879
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NYC-WTC_000204879Source: NYC Law Department, mirrored locally
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