Draft document outlining ambient and indoor air sampling strategies for residential areas near the World Trade Center site.
NYC-WTC_000176041–000176051
OCR status: ok · source: pdftotext
NYC 9/11 Public Portal Document
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VII. Action Levels: Action levels will be developed for silica and PM in air; and for asbestos in vacuum dust and outdoor surface dust samples.
Vm. 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 residential sampling will be un-related to the WTC event. Attempts will be made during sample collection to note other possible sources of contaminants.
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NYC-WTC_000176049
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NYC-WTC_000178091
Sampling protocol developed to assess residential exposure to airborne and settled dust near the World Trade Center.
15 shared non-person entities · 1 shared topics · similarity 0.979
machine-extracted · confidence unavailable · Check page ↗13 shared non-person entities · 1 shared topics · similarity 0.984
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000152814
Draft document outlining concepts and priorities for sampling buildings near the WTC to identify worst-case contamination scenarios.
14 shared non-person entities · 1 shared topics · similarity 0.983
machine-extracted · confidence unavailable · Check page ↗14 shared non-person entities · 1 shared topics · similarity 0.983
machine-extracted · confidence unavailable · Check page ↗14 shared non-person entities · 1 shared topics · similarity 0.983
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.
13 shared non-person entities · 1 shared topics · similarity 0.981
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.
13 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 0.978
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.
15 shared non-person entities · 1 shared topics · similarity 0.978
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000139712
Series of emails forwarding a draft memo between DEP staff members for review and finalization.
15 shared non-person entities · 1 shared topics · similarity 0.978
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.
15 shared non-person entities · 1 shared topics · similarity 0.978
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000164784
Transmission of revised asbestos sampling results for residential samples collected November-December 2001.
15 shared non-person entities · 1 shared topics · similarity 0.977
machine-extracted · confidence unavailable · Check page ↗Similar subjects in other documents. Similarity does not establish the same event, measurement or conclusion.
Similarity score 0.985 (not a probability)
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000152814
Draft document outlining concepts and priorities for sampling buildings near the WTC to identify worst-case contamination scenarios.
Similarity score 0.984 (not a probability)
machine-extracted · confidence unavailable · Check page ↗Similarity score 0.984 (not a probability)
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.
Similarity score 0.944 (not a probability)
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000162222
EPA staff distributed an environmental laboratory report to federal and city agencies on May 15, 2002.
Similarity score 0.943 (not a probability)
machine-extracted · confidence unavailable · Check page ↗Similarity score 0.943 (not a probability)
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