Report on decontamination instructions for contractors and air clearance monitoring near Ground Zero at Battery Park City.
NYC-WTC_000160471–000160479
OCR status: ok · source: pdftotext
NYC 9/11 Public Portal Document
DERTA’s activities at WTC attack:
As first responders, DERTA immediately arrived at the WTC incident prior to the collapse of the towers. Following the recovery of personnel who were buried in underground areas following the collapse, DERTA immediately began sampling bulk debris and conducted air sampling to identify hazardous constituents and zones of contamination. Air sampling results obtained on 9/11 by DERTA were used to define the exclusion zone (areas of contamination). On 9/12, air sampling for asbestos continued and additional air monitoring for volatile organic compounds, acid gases and toxic metals was implemented at the impact area, surrounding perimeters, and in the five boroughs.
DERTA coordinated and supervised clean-up activities; identified areas of clearance; provided technical and regulatory expertise to OEM and other environmental agencies; performed confined space entries with FDNY and PA police into unknown ambient atmospheric conditions in sublevel areas below the collapsed towers to identify chemical and toxic atmospheric conditions; examined unknown drums and containers uncovered in rubble; and coordinated investigations with private and public property owners to provide technical and regulatory advisement on proper cleanup processes.
NYC-WTC_000160476
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Ranked by indexed similarity. Reasons describe shared subjects and filing context; check the source records.
NYC-WTC_000160462
Department of Environmental Protection correspondence regarding building reoccupancy challenges and coordination with DOH and EPA.
10 shared non-person entities · 1 shared topics · Same agency, volume and box · similarity 0.973
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000159829
Coordination memo for WTC recovery inter-agency meeting on building and parks assessment and scope.
9 shared non-person entities · Same agency, volume and box · similarity 0.967
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000161615
Document listing examples of World Trade Center evidence and areas of focus for preservation efforts.
13 shared non-person entities · Same agency, volume and box · similarity 0.967
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000148621
Memo outlining DEP activities including assessment and coordination with federal agencies for street and sidewalk cleaning.
18 shared non-person entities · 1 shared topics · similarity 0.984
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000148742
Notice instructing staff to preserve original World Trade Center documents for potential legal actions against the City.
18 shared non-person entities · 1 shared topics · similarity 0.980
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000153468
Page containing illegible text and a document identifier for the EPA Inspector General series.
9 shared non-person entities · 1 shared topics · similarity 0.968
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000146033
Correspondence from NYC Corporation Counsel providing comments on excerpts of a draft EPA evaluation report regarding the WTC response.
11 shared non-person entities · 1 shared topics · similarity 0.967
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000146090
Excerpt from a draft evaluation describing modified contract procedures used by NYCDDC for World Trade Center demolition and debris removal.
9 shared non-person entities · 1 shared topics · similarity 0.966
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000147982
A project proposal outlining the timeline, methods, and justification for cleaning HVAC systems in residential units affected by World Trade Center dust.
11 shared non-person entities · similarity 0.966
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.
16 shared non-person entities · similarity 0.966
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000153096
Interagency memo circulating EPA revisions for NESHAP and related programs with request for legal and agency comments.
10 shared non-person entities · 1 shared topics · similarity 0.965
machine-extracted · confidence unavailable · Check page ↗11 shared non-person entities · similarity 0.964
machine-extracted · confidence unavailable · Check page ↗Similar subjects in other documents. Similarity does not establish the same event, measurement or conclusion.
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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
NYC-WTC_000148952
Table listing volatile organic compound (VOC) sampling sites and dates outside of Ground Zero from September 2001 to January 2002.
Cited alongside this record in an Ask answer
Cited alongside this record in an Ask answer
NYC-WTC_000106411
Union memorandum discussing the reopening of a closed school following WTC disaster cleanup protocols.
Cited alongside this record in an Ask answer
NYC-WTC_000106851
Certification that floors 6-11 of school building meet re-occupancy criteria based on post-cleaning visual inspection and air sample testing.
Cited alongside this record in an Ask answer