OCR status: ok · source: pdftotext
z z o o i I o co
o ■D c o IV. Sampling Parameters: o Indoor/Outdoor Rationale for Selection CT Parameter Sample Type o' cn Asbestos breathing ht., I/O known use in building construction, evidence of ■D 00 o time-weighted presence in early air sampling and in settled dust, o cn 3. air known inhalation carcinogen 03
o o Total Suspended breathing ht.. o Characterize amount of airborne dust that is o c particulates Continuous, real inhalable (s 100 pm aerodynamic diameter) 3 CD time, air
PM 10 and PM2.5 breathing ht.. O Characterize the amount of airborne dust that is Continuous, real respirable time, air
Inhalable (< 100pm)’ breathing ht., I/O To determine relative amounts of each fraction present , thoracic (<10pm)’ time-weighted, and to have each fraction analyzed for silica, gypsum, respirable (<4pm)’ air asbestos, mica, and calcite to qualitatively determine potential hazards.
Respirable breathing ht., I/O Known component of concrete, evidence of crystalline silica time-weighted, presence in some settled dust samples, known air inhalation carcinogen.
pH" dust I/O Concrete has a high pH, if dust has a high pH, it may be contributing to reported symptoms of ENT irritation
Asbestos" dust I/O Determine if asbestos is present in dust
gypsum, mica, dust I/O Associated with building materials (concrete, calcite" drywall) and known to be irritating to ENT
magnesium dust I/O May act as a tracer for WTC-related dust, levels found in metals analysis of settled dust from 16,000-29,000 ppm * results will be used to better understand the potential for ENT and respiratory irritation, and possibly for determining the possibility of acute/chronic health problems. Results will assist in providing information/recommendations to the public (e.g., what is contributing to irritation, how to reduce exposures)
" to assist in characterizing dust that can become airborne (re-intrainment of settled dust that may be the source of continuing air contamination), and to make recommendations for outdoor dust remediation
Page 4 of
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.
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.
Page similarity is temporarily unavailable or this page has no indexed vector.
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_000141585
Map showing the condition of buildings at the World Trade Center site as of September 21, 2001.
Cited alongside this record in an Ask answer
NYC-WTC_000148742
Notice instructing staff to preserve original World Trade Center documents for potential legal actions against the City.
Cited alongside this record in an Ask answer
New York Daily News article excerpt discussing an activist's role in the revival of Lower Manhattan.
Cited alongside this record in an Ask answer
NYC-WTC_000143452
Unreadable text fragment containing isolated letters and symbols from an unknown source document.
Cited alongside this record in an Ask answer
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.
Cited alongside this record in an Ask answer