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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If the building is unoccupied, aggressive (leaf blower, high-power fan) indoor air sampling should be conducted. If the building is occupied, air sampling should be conducted with the building HVAC system in continuous operation. After sampling is completed, filters for the HVAC system, if applicable, should be inspected. If dust is present, recommend filter replacement.
Indoor air sampling will be conducted for: asbestos (NIOSH 7400 and, if an action level is exceeded, NIOSH 7402), PCMe), respirable crystalline silica (NIOSH 7500), and inhalable, thoracic, and respirable airborne particulate matter for fi-action analyses of silica, gypsum, mica, etc. (lOM sampler).
Indoor floor dust sampling will be conducted for asbestos (via TEM as the detection limit for PLM is 1%); for silica, gypsum, mica (XRD); and for magnesium (EPA Method#). Floor dust sampling will be conducted using EPA’s Environmental Response Team (ERT) SOP for household dust collection. Any deviations fi-om the SOP in actual field collection will be documented by the sampling team.
2. Exterior Air and settled dust sampling should occur in a grid pattern in residential areas.
Ambient air sampling will be conducted at breathing height for: asbestos (NIOSH 7400 and, if an action level is exceeded, NIOSH 7402), PCMe ), respirable silica (NIOSH 7500), and inhalable, thoracic, and respirable airborne particulate matter for fi-action analyses of silica, gypsum, mica, etc. (lOM sampler). In addition, 24-hour real-time TSP, PMIO and PM 2.5 sampling will be conducted-again at breathing zone height.
Settled dust samples will be collected and analyzed for asbestos (via TEM as the detection limit for PLM is 1%); for silica, gypsum, and mica (XRD); and for magnesium (EPA Method #).
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NYC-WTC_000176046
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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 0.990 (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 0.990 (not a probability)
machine-extracted · confidence unavailable · Check page ↗Similarity score 0.990 (not a probability)
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.
Similarity score 0.969 (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 0.969 (not a probability)
machine-extracted · confidence unavailable · Check page ↗Similarity score 0.968 (not a probability)
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