Notice from NYC Law Department instructing staff to preserve World Trade Center documents for potential legal actions.
NYC-WTC_000145027–000145344Folder label: “NO INFO”
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.
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_000195194
Document excerpt acknowledging contributors and outlining the collaborative scope of an EPA environmental protection study regarding the World Trade Center site.
28 shared non-person entities · similarity 0.970
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000149537
Instructions and sections for collecting sample location data from a specific building interior.
22 shared non-person entities · similarity 0.970
machine-extracted · confidence unavailable · Check page ↗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 · 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 · similarity 0.969
machine-extracted · confidence unavailable · Check page ↗16 shared non-person entities · 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 · similarity 0.967
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000176247
Comprehensive environmental assessment report prepared by TRC Engineers for the New York City Law Department.
17 shared non-person entities · similarity 0.966
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 · 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 · 1 shared topics · similarity 0.965
machine-extracted · confidence unavailable · Check page ↗Similar subjects in other documents. Similarity does not establish the same event, measurement or conclusion.
NYC-WTC_000178388
Comprehensive report on airborne and dust exposures in Lower Manhattan following the September 11 attacks, published by the Department of Health.
Similarity score 0.938 (not a probability)
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000117441
Report from Athenica Environmental Services regarding HVAC and environmental inspections at 375 South End Avenue.
Similarity score 0.938 (not a probability)
machine-extracted · confidence unavailable · Check page ↗Similarity score 0.937 (not a probability)
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000176156
Report enclosure detailing air and settled dust sampling results for Building 26, including PM size fraction analysis.
Similarity score 0.937 (not a probability)
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000150408
Memorandum regarding the FBI releasing vehicles from Ground Zero to Fresh Kills Landfill for investigation purposes.
Similarity score 0.936 (not a probability)
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000150408
Memorandum regarding the FBI releasing vehicles from Ground Zero to Fresh Kills Landfill for investigation purposes.
Similarity score 0.935 (not a probability)
machine-extracted · confidence unavailable · Check page ↗Machine-extracted building matches; verify each source. Buildings, never households.
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_000146129
Correspondence from NYC Corporation Counsel providing comments on excerpts of a draft EPA evaluation report regarding the WTC response.
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
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
NYC-WTC_000145345
Notice from NYC Law Department instructing staff to preserve World Trade Center documents for potential legal actions.
Cited alongside this record in an Ask answer
NYC-WTC_000145510
Notice from NYC Law Department instructing staff to preserve World Trade Center documents for potential legal actions.
Cited alongside this record in an Ask answer