NYC-WTC_000149537
Instructions and sections for collecting sample location data from a specific building interior.
22 shared non-person entities · 1 shared topics · similarity 0.970
machine-extracted · confidence unavailable · Check page ↗Document / 318 pages
Law Department notice on WTC document preservation, Oct 2001
Machine-extracted title · confidence 95%Notice from NYC Law Department instructing staff to preserve World Trade Center documents for potential legal actions.
NYC-WTC_000145027–000145344Folder label: “NO INFO”
Page image
OCR text
OCR status: ok · source: pdftotext
NYC 9/11 Public Portal Document
Silica Personal Air Sampling Results for the WTC Residential Confirmation Cleaning Study (Analytical Method NIOSH 7S00, flow Rate 2.5 Umin, Required Volume 400 to 1,000 L)
•PEL for Quartz, Cristobalite and Tridymite The Permissible Exposure Limit for quartz (0.1 mg/m3) was arrived by using 100 in the denominator of the formula specified for quartz at 29CFR 1910.1000 Table Z-3. The cristobalite and tridymite PELs (0.05 mg/m3) were arrived at by halving the quartz value as specified at 29CFR 1910.1000 Tabla Z-3
••Suspiciously High Values of Cristobalite in EPA WTC Samples In this project, EMSL has been using the tertiary peak (non-overlapping with other five phases) for Cristobalite for estimating this phase if it is suspected to be present. Some of the samples do show a strong diffraction peak in the angular region 30.2-32.4 degree 2-theta. However, there are reasons to suggest that these peaks may be due to some other phase, not Cristobalite.Three spectra from the project # 040208995 are enclosed. Each shows a strong peak and the true position for cristobalite superimposed. Clearly, the peaks in these samples are very much displaced to the left with respect to the true position. For comparison purposes, a similar spectra taken on a 50 ug cristobalite standard is also included. EMSL Laboratories is using a disclaimer, that Cristobalite has not been confirmed in these samples and that estimates are only tentative.
*“ The PCM was below the NYC reoccupancy standard (.01 ffcc). Therefore, TEM was not run.
7
NYC-WTC_000145037
OCR can misread numbers and units. Confirm readings against the page image before using them.
NYC-WTC_000145037Source: NYC Law Department, mirrored locally
Related records
Browse subjects →Ranked by indexed similarity. Reasons describe shared subjects and filing context; check the source records.
Same-box records
No available related records indexed in this group.
Filed elsewhere
NYC-WTC_000149798
Generic form or header page from the Department of Environmental Protection regarding general World Trade Center notices and requests.
20 shared non-person entities · similarity 0.970
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000117441
Report from Athenica Environmental Services regarding HVAC and environmental inspections at 375 South End Avenue.
13 shared non-person entities · 1 shared topics · similarity 0.969
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000117561
Cover letter from Athenica Environmental Services regarding HVAC and environmental inspections at 395 South End Avenue.
11 shared non-person entities · 1 shared topics · similarity 0.969
machine-extracted · confidence unavailable · Check page ↗16 shared non-person entities · 1 shared topics · similarity 0.968
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000149432
DEP asbestos project notification form and inspection report dated December 12, 2002.
20 shared non-person entities · 1 shared topics · similarity 0.967
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000149936
Joint OSHA and Bechtel crane inspection report analyzing safety conditions at the World Trade Center site.
12 shared non-person entities · 1 shared topics · similarity 0.966
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.
17 shared non-person entities · similarity 0.966
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000139712
Series of emails forwarding a draft memo between DEP staff members for review and finalization.
17 shared non-person entities · similarity 0.966
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000155394
Transmission of cleanup and environmental monitoring documentation for 114 Liberty post-WTC dust remediation project.
12 shared non-person entities · similarity 0.965
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 · similarity 0.964
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000125845
Draft fact sheet from DOH and DEP addressing tenant concerns regarding asbestos fibers at 105 Duane Street.
25 shared non-person entities · similarity 0.964
machine-extracted · confidence unavailable · Check page ↗More like this 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.
Buildings in this record
Machine-extracted building matches; verify each source. Buildings, never households.
- 110 Liberty Street · 5 pages · confidence 0.70 · verify page 179
- 170 William Street · 1 pages · confidence 0.00 · verify page 75
Others also read
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_000150209
Laboratory report listing PCM and TEM asbestos air sampling results collected on September 26, 2001.
Cited alongside this record in an Ask answer
NYC-WTC_000134871
EPA Region 2 letter regarding revised environmental work plan submission for two buildings including asbestos, health, and safety assessment components.
Cited alongside this record in an Ask answer
NYC-WTC_000094912
Invoice detailing billing for bulk and air sample analysis results including PLM, PCM, and TEM testing at 44 Wall Street.
Cited alongside this record in an Ask answer
NYC-WTC_000096623
Part II of a health and safety plan for remediation and deconstruction at 30 Warren Street in January 2006.
Cited alongside this record in an Ask answer
Archival folder label for September 11 news clippings from the Office of the Mayor, identified as Folder 0123.
Cited alongside this record in an Ask answer