OCR status: ok · source: pdftotext
NYC 9/11 Public Portal Document
WTC Environmental Monitoring: Latest Summary Page 2 of 3
Particulate Monitoring - EPA used portable monitors to collect samples on December 6 in the following locations: L (north east side of Stuyvesant High School); N (south side of Pier 25); and R (north west side of Stuyvesant High School). All readings were below the OSHA time-weighted permissible exposure limit for particulates.
VOCs - Sampling for volatile organic compounds (VOCs) was conducted on December 6 in the direct area of the debris pile at ground zero. To protect workers at the work site, EPA takes grab samples of VOCs where smoke plumes have been sighted. The results are snapshots of the levels at a moment in time. OSHA's protective standards set a permissible exposure limit (PEL) averaged over an 8-hour day. Benzene exceeded the OSHA standard at one location on the debris pile - the North Tower. Two of three samples taken at EPA's Wash Tent (West St. and Murray) and Austin Tobin Plaza showed no detectable levels of benzene.
Direct Air Readings - On December 4 and 6, EPA did air monitoring for a series of isocyanate compounds (hexamethylene diisocyanate, bisphenyl isocyanate and toluene-2,4-diisocyanate) in and around ground zero. EPA did not detect any of these compounds.
Previous Daily Environmental Monitoring Summaries:
December 6, 2001 December 5, 2001 December 4, 2001 December 2 & 3, 2001 December 1,2001 November 29 & 30, 2001 November 28, 2001 November 27. 2001 November 26, 2001 November 23, 2001 November 21. 2001 November 20, 2001 November l9,(2001 November 17, 2001 November 16. 2001 November 15? 2001 November 14, 2001 November 13, 2001 November 1 1 & 12, 2001 November 10, 2001 November 9, 2001 November 8, 2001 November 7, 2001 November "6,2001 November 4 & 5, 2001 November 3, 2001 November 1 & 2, 2001 October 30 & 31.2001 October 28 & 29, 2001 October 26 & 27, 2001 October 25, 2001 October 24, 2001 October 23. 2001 October 22, 2001 October 21, 2001 October 20, 2001 October 19, 2001 October 17 & 18. 2001 October 16, 2001 Octobci 15, 2001 Octobei 14, 2001 October 13, 2001
http://w'ww.epa.gov/epahomc/wtc/data summary.htm 12/09/2001
CITY_21MC100_008918679
NYC-WTC_000208429
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NYC-WTC_000141089
EPA daily summary of environmental sampling and analysis for air, dust, water, and sediments at the World Trade Center site in February 2002.
9 shared non-person entities · 1 shared topics · similarity 0.971
machine-extracted · confidence unavailable · Check page ↗10 shared non-person entities · similarity 0.971
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000141121
EPA news summary dated October 13, 2001, regarding environmental monitoring data collected from the World Trade Center site.
12 shared non-person entities · similarity 0.969
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000141123
EPA news summary dated October 12, 2001, regarding environmental monitoring data collected from the World Trade Center site.
12 shared non-person entities · similarity 0.964
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000141094
EPA daily summary of environmental sampling and analysis for air, dust, water, and sediments at the World Trade Center site in October 2001.
12 shared non-person entities · 1 shared topics · similarity 0.959
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000141083
EPA daily summary of environmental sampling and analysis for air, dust, water, and sediments at the World Trade Center site in October 2001.
12 shared non-person entities · similarity 0.957
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000141116
EPA news summary dated October 16, 2001, regarding environmental monitoring data collected from the World Trade Center site.
11 shared non-person entities · similarity 0.957
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000141114
EPA daily summary of environmental sampling and analysis for air, dust, water, and sediments at the World Trade Center site in October 2001.
11 shared non-person entities · similarity 0.954
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000141119
EPA news summary dated October 14, 2001, regarding environmental monitoring data collected from the World Trade Center site.
10 shared non-person entities · similarity 0.953
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000147006
Form documenting an environmental referral for the World Trade Center site with follow-up status.
9 shared non-person entities · 1 shared topics · similarity 0.952
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000141118
EPA news summary dated October 15, 2001, regarding environmental monitoring data collected from the World Trade Center site.
12 shared non-person entities · similarity 0.950
machine-extracted · confidence unavailable · Check page ↗8 shared non-person entities · similarity 0.949
machine-extracted · confidence unavailable · Check page ↗Similar subjects in other documents. Similarity does not establish the same event, measurement or conclusion.
Similarity score 0.981 (not a probability)
machine-extracted · confidence unavailable · Check page ↗Similarity score 0.973 (not a probability)
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000141089
EPA daily summary of environmental sampling and analysis for air, dust, water, and sediments at the World Trade Center site in February 2002.
Similarity score 0.968 (not a probability)
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000141116
EPA news summary dated October 16, 2001, regarding environmental monitoring data collected from the World Trade Center site.
Similarity score 0.966 (not a probability)
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000147006
Form documenting an environmental referral for the World Trade Center site with follow-up status.
Similarity score 0.966 (not a probability)
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000141114
EPA daily summary of environmental sampling and analysis for air, dust, water, and sediments at the World Trade Center site in October 2001.
Similarity score 0.965 (not a probability)
machine-extracted · confidence unavailable · Check page ↗Readers open these alongside this record — through an Ask answer, the same folder, or indexed similarity. Not a claim they are about the same event.
NYC-WTC_000141089
EPA daily summary of environmental sampling and analysis for air, dust, water, and sediments at the World Trade Center site in February 2002.
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EPA news summary dated October 13, 2001, regarding environmental monitoring data collected from the World Trade Center site.
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