Laboratory analysis of asbestos air samples collected at the World Trade Center site on September 19-22, 2001.
NYC-WTC_000186549
OCR status: ok · source: pdftotext
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 free) 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 f/cc) 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 BulkZDust Samples
® One sample taken from the Tower 2 Beam on Sept. 21 had non-detectable levels of asbestos
Landfill Air Sampling locations (Asbestos and PM)
e 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
CITY_21MC100_002941063
NYC-WTC_000186549
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NYC-WTC_000186548
Summary report of air sampling results for asbestos and PCBs at NYC/ER and Fresh Kills from October 8-10, 2001.
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Summary of asbestos air sampling results from December 2001 showing all samples below TEM AHERA standards for NYC and Fresh Kills.
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Summary report of air sampling results for asbestos and PCBs at NYC/ER and Fresh Kills from October 8-10, 2001.
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