OCR status: ok · source: pdftotext
NYC 9/11 Public Portal Document
Sample/Analytical Methods [NOTE: screening levels dictate detection/quantitation limit needs]
Parameter Environmental.Media Sampling/Analytical Method Sample Flow/time Analytical LOD / LOQ*
Asbestos 1/O** air NIOSH 7400, NIOSH 7402 16 L/min -4 hr (3840L) 0.010 f/cc (LOQ) Breathing zone sample height 5 hr (4800L) 0.008 f/cc 6 hr (5760L) 0.007 f/cc Total Suspended O air EPA Method # (continuous realtime) 24-hr Particulates Breathing zone sample height
PM10 and PM2.5 O air EPA Method # (continuous real-time) 24-hr Breathing zone sample height
Inhalable (<100µm) I/O air IOM personal sampler. Analyze each 2 L/min -5 hr (600L) 30 ug / 50 ug/m3 thoracic (<I0µm) fraction for asbestos,(TEM), and for respirable (<4µm) crystalline silica, gypsum, fiberglass calcite (XRD)
Respirable 11O air NIOSH 7500 2.5 L/min-5.3 hr(800L) 5 ug /6 ug/m3 crystalline silica
pH 11O dust EPA SW 846 Mtd 9045C (soils) 10-25 g
asbestos I/O dust PLM, and if <1% TEM "
asbestos, gypsum, I/O dust XRD " mica, fiberglass calcite
analytical detection; LOQ: Limit of analytical quantitation **LOD:Limit of I: indoor; O: outdoor
Page 7 of 10
NYC-WTC 000164424
OCR can misread numbers and units. Confirm readings against the page image before using them.
Ranked by indexed similarity. Reasons describe shared subjects and filing context; check the source records.
No available related records indexed in this group.
NYC-WTC_000153247
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 · similarity 0.996
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.
16 shared non-person entities · 1 shared topics · similarity 0.996
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.
16 shared non-person entities · 1 shared topics · similarity 0.991
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 0.990
machine-extracted · confidence unavailable · Check page ↗15 shared non-person entities · 1 shared topics · similarity 0.990
machine-extracted · confidence unavailable · Check page ↗15 shared non-person entities · 1 shared topics · similarity 0.990
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.
18 shared non-person entities · 1 shared topics · similarity 0.984
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.
17 shared non-person entities · 1 shared topics · similarity 0.984
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.
18 shared non-person entities · 1 shared topics · similarity 0.984
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000164784
Transmission of revised asbestos sampling results for residential samples collected November-December 2001.
17 shared non-person entities · 1 shared topics · similarity 0.984
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000176041
Draft document outlining ambient and indoor air sampling strategies for residential areas near the World Trade Center site.
13 shared non-person entities · 1 shared topics · similarity 0.984
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000139712
Series of emails forwarding a draft memo between DEP staff members for review and finalization.
18 shared non-person entities · 1 shared topics · similarity 0.984
machine-extracted · confidence unavailable · Check page ↗Similar subjects in other documents. Similarity does not establish the same event, measurement or conclusion.
Similarity score 0.992 (not a probability)
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000164784
Transmission of revised asbestos sampling results for residential samples collected November-December 2001.
Similarity score 0.990 (not a probability)
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.
Similarity score 0.989 (not a probability)
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000178091
Sampling protocol developed to assess residential exposure to airborne and settled dust near the World Trade Center.
Similarity score 0.980 (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 0.975 (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 0.975 (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_000145869
Interim final report from EPA Region 2 detailing a background study of environmental conditions at the World Trade Center site.
Cited alongside this record in an Ask answer
NYC-WTC_000149199
Department of Environmental Protection advisory letter dated October 25, 2001, addressed to residents of Lower Manhattan.
Cited alongside this record in an Ask answer
NYC-WTC_000106330
Letter reporting asbestos testing results for air and dust at Borough of Manhattan Community College in February 2002.
Cited alongside this record in an Ask answer
NYC-WTC_000152825
Draft protocol establishing procedures for evaluating airborne and settled dust in residential and commercial areas near the World Trade Center.
Cited alongside this record in an Ask answer
Draft protocol for assessing airborne and settled dust exposures in residential areas following the World Trade Center collapse.
Cited alongside this record in an Ask answer