Form documenting the tracking and handling of environmental samples collected by the Department of Environmental Protection.
NYC-WTC_000145695–000145868Folder label: “NO INFO”
OCR status: ok · source: pdftotext
NYC 9/11 Public Portal Document
Modified Scope A - Lower Manhattan Shortly after the study was initiated, the procedures for the WTC Dust Cleanup Program were developed. Once those procedures were finalized, it was decided to include a modified Scope A cleaning procedure developed by the WTC Dust Cleanup Program as one of the cleaning methods in the study.
3.10 Supplemental Sampling Activities
Sampling of "Non-Study" Units As noted previously, three commercial units located within the study building, but not part of the initial study, were also cleaned by EPA. Pre-cleanup samples collected from two of the three non-study commercial units (Food Exchange, Lemongrass Grill) were limited to the collection of wipe samples from within the HVAC system ducts. Analysis of these samples included lead, MMVF, alpha-quartz and asbestos. Pre-cleanup samples collected from the remaining non-study commercial unit (Barber Shop) included a bulk sample of insulation material which was collected to confirm its asbestos content. Pre-cleanup wipe samples were also collected for analysis of lead, dioxin and PAH.
Post-cleanup area air samples were collected from the three non-study commercial units (Barber Shop, Lemongrass Grill, and The Food Exchange). The analyses for these samples included MMVF, asbestos, alpha-quartz, and lead. Additional air samples were collected in the Lemongrass Grill and The Food Exchange in close proximity to the HVAC return ducts, in order to evaluate the effectiveness of the HVAC cleaning method.*^
Post-cleanup wipe samples were collected from the inside surfaces of the HVAC ducts within two of the three non-study units (Lemongrass Grill, The Food Exchange) and analyzed for asbestos, MMVF, alpha-quartz and lead. Additionally, samples were collected from the inside surfaces of the ducts within the non-study units utilizing a modified micro vacuum technique; these were collected in accordance with the National Air Duct Cleaners Association (NADCA) ACR 2002 procedures referenced in Attachment I, and analyzed for Total Particulates Not Otherwise Regulated (PNOR) following NIOSH 0500 methodology.
3.11 Mercu/y Vapor Using Lumex® Analyzer
On June 19, 2002, with the assistance of Dr. Clyde Johnson, Assistant Professor of Environmental Sciences at Medgar Evers College (City University of New York), EPA measured mercury vapor levels in the thirteen residential units, three commercial units, and all common areas in the study building. All sampling was conducted under pre-cleaned conditions utilizing a Lumex® RA-915+ Mercury Vapor Analyzer. Measurements were performed at the breathing zone of infants and adults (6 inches and 5 feet above the floor), using continuous, real-time monitoring and data logging of mercury levels. Further explanation of mercury sampling activities and results are included in Attachment K, Summary ofMercury Vapor Results Using the Lumex® Vcpor Analyzer.
'^See Attachment I, HVAC Cleaning Procedures.
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NYC-WTC_000145732
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NYC-WTC_000145027
Notice from NYC Law Department instructing staff to preserve World Trade Center documents for potential legal actions.
28 shared non-person entities · Same agency, volume and box · similarity 0.960
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Interim final report from EPA Region 2 detailing a background study of environmental conditions at the World Trade Center site.
28 shared non-person entities · 1 shared topics · Same agency, volume and box · similarity 0.960
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Formal letter criticizing the EPA and DEP for alleged failures in cleaning asbestos and silica from 114 Liberty Street.
13 shared non-person entities · 1 shared topics · similarity 0.964
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000155174
Chain of custody documentation for cleanup and monitoring samples at 114 Liberty distributed among project team members.
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Internal DEP coordination regarding comments on 114 Liberty procedures and preparation of a response.
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machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000102521
EPA letter confirming that primary and secondary clearance levels for asbestos and other contaminants were met at 114 Liberty Street.
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EPA Region II letter confirming that primary and secondary clearance levels for asbestos and other contaminants were met at 114 Liberty Street.
10 shared non-person entities · 1 shared topics · similarity 0.959
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000154940
EPA confirms that primary and secondary clearance levels for contaminants at 114 Liberty Street have been met.
10 shared non-person entities · 1 shared topics · similarity 0.958
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000154998
EPA confirms that primary and secondary clearance levels for contaminants at 114 Liberty Street have been met.
10 shared non-person entities · 1 shared topics · similarity 0.956
machine-extracted · confidence unavailable · Check page ↗12 shared non-person entities · similarity 0.956
machine-extracted · confidence unavailable · Check page ↗11 shared non-person entities · similarity 0.954
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Archival folder label for September 11 news clippings from the Office of the Mayor, identified as Folder 0123.
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Updated memorandum defining the Red Zone boundaries and listing authorized agencies for entry into the restricted area.
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NYC-WTC_000142373
Directory of organizations providing financial aid, job placement, and space assistance to businesses affected by the disaster.
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NYC-WTC_000145027
Notice from NYC Law Department instructing staff to preserve World Trade Center documents for potential legal actions.
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Policy document outlining NYPD access requirements for building owners and contractors at the site in October 2001.
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