OCR status: ok · source: pdftotext
NYC 9/11 Public Portal Document
VII. Action Levels/Data Interpretation: Action levels will be developed for silica and PM in air; and for asbestos in vacuum dust and outdoor surface dust samples. .'
Data will be evaluated by local, state and federal public health agencies. Evaluations will include: 1) Indoor sampling will be evaluated on a residence-by- residence basis (for the individual occupants) 2) Evaluate all indoor data to determine the extent of public health implications for building occupants near the WTC 3) Evaluate all outdoor data to determine the extent of public health implications for the general public living/working near the WTC 4) Evaluate the relationship between materials found in indoor and outdoor samples
VIII. Using Mg as a tracer: In an attempt to determine if dust is related to the WTC, it is proposed that magnesium be analyzed in the indoor and outdoor dust samples. Outdoor dust samples analyzed for metals by EPA have shown magnesium levels from 16,000-29,000 ppm. NIOSH has reported similar results.
Magnesium has not been found in ambient or occupational air samples collected to date. Therefore, surface dust sampling analysis for magnesium may assist in whether the areas sampled have been impacted with dust deposited by the WTC event. Evaluating trends between distance and direction from the WTC and dust levels of magnesium, along with crystalline silica and other analytes, may assist making the determining that an area has NOT been impacted.
IX. Interference from existing bldg materials: It is anticipated that some of the contaminants/materials found in this sampling effort will be un related to the WTC event. Attempts will be made during sample collection to note other possible sources of contaminants.
To better determine if contaminants/materials found are within area background levels; consideration is being given to include sampling at several (?) representative background residential/commercial locations (W 42"** and 10'*’ Ave in Manhattan has been suggested).
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NYC-WTC_000152814
Draft document outlining concepts and priorities for sampling buildings near the WTC to identify worst-case contamination scenarios.
15 shared non-person entities · 1 shared topics · Same agency, volume and box · similarity 1.000
machine-extracted · confidence unavailable · Check page ↗16 shared non-person entities · 1 shared topics · Same agency, volume and box · similarity 0.999
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000153247
Draft protocol for assessing airborne and settled dust exposures in residential areas following the World Trade Center collapse.
14 shared non-person entities · 1 shared topics · Same agency, volume and box · similarity 0.992
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000152825
Draft protocol establishing procedures for evaluating airborne and settled dust in residential and commercial areas near the World Trade Center.
15 shared non-person entities · 1 shared topics · Same agency, volume and box · similarity 0.991
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000153241
Draft protocol for assessing airborne and settled dust exposures in residential areas following the World Trade Center collapse.
15 shared non-person entities · 1 shared topics · Same agency, volume and box · similarity 0.987
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000153258
Draft protocol for assessing airborne and settled dust exposures in residential areas following the World Trade Center collapse.
15 shared non-person entities · 1 shared topics · Same agency, volume and box · similarity 0.980
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000153220
Draft protocol outlining objectives and locations for assessing airborne and settled dust exposures in residential areas.
14 shared non-person entities · 1 shared topics · Same agency, volume and box · similarity 0.980
machine-extracted · confidence unavailable · Check page ↗15 shared non-person entities · 1 shared topics · similarity 0.992
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000164960
Draft compilation of asbestos air samples collected from residential areas November-December 2001 by NYC DOH and ATSDR.
16 shared non-person entities · 1 shared topics · similarity 0.980
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000139656
Forwarded spreadsheet compiling residential asbestos sampling results collected in November-December 2001, including Building 11 reoccupancy assessment.
15 shared non-person entities · 1 shared topics · similarity 0.980
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000139712
Series of emails forwarding a draft memo between DEP staff members for review and finalization.
16 shared non-person entities · 1 shared topics · similarity 0.979
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000164732
Draft spreadsheet of asbestos sampling results from residential locations collected November-December 2001, circulated for review.
16 shared non-person entities · 1 shared topics · similarity 0.979
machine-extracted · confidence unavailable · Check page ↗Similar subjects in other documents. Similarity does not establish the same event, measurement or conclusion.
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NYC-WTC_000141585
Map showing the condition of buildings at the World Trade Center site as of September 21, 2001.
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NYC-WTC_000148742
Notice instructing staff to preserve original World Trade Center documents for potential legal actions against the City.
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New York Daily News article excerpt discussing an activist's role in the revival of Lower Manhattan.
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NYC-WTC_000143452
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NYC-WTC_000151742
Letter responding to correspondence regarding the EPA World Trade Center Cleanup Program, noting that extensions through December 28, 2002, were sufficient for registration.
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