NYC-WTC_000093400
A license agreement document regarding exterior cleaning services for the property at 65 Liberty Street.
12 shared non-person entities · similarity 0.985
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Invoice for asbestos sample analysis, 44 Wall Street
Machine-extracted title · confidence 100%Invoice detailing billing for bulk and air sample analysis results including PLM, PCM, and TEM testing at 44 Wall Street.
NYC-WTC_000094912–000095002Folder label: “44 WALL STREET Block: 43 Lot: 1”
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NYC 9/11 Public Portal Document
Hillmann Environmental Group, LLC
4.6 Hydrogen Sulfide
Hydrogen sulfide is a colorless gas with a strong odor. This gas can be found during or after fires, and can cause varying complaints from headaches to nausea. The OSHA Permissible Exposure Limit (PEL) is 10 ppm. Levels of hydrogen sulfide in the subject space remained below the limit of detection of 1 ppm on all investigated days, and therefore below the recommended limits.
4.7 Oxygen
Oxygen is a normal and vital constituent of our atmosphere. The normal level of oxygen in air, at sea level, is 20.9%. If oxygen levels in a space are at or below 19.5%, the space is considered oxygen deficient (by OSHA 29 CFR Part 1910.94, 30 CFR Part 11 and ANSI Standard Z88.5-1973) and is unable to safely support human occupancy. The oxygen levels ranged from 20.7% to 21.2% in the subject space, and were within the recommended range.
4.8 Combustible Gasses
Combustible gasses are combustible, explosive and present a danger as such, especially when contained in a structure. Levels should mostly be below 1% and never exceed 10% in an occupied area. The LEL levels were below the limit of detection of 1.0% in the subject space at all times during the investigation.
4.9 Airborne Asbestos Fibers
Levels of airborne asbestos fibers ranged from below the limit of quantification to 0.005 fibers/cc. The EPA NESHAP standard is 0.01 fibers/cc. Observed levels were well below this limit. Bulk dust samples were also taken from various areas in the subject space to ensure cleaning procedures were effective after the World Trade Center collapse. Asbestos fibers were not detected in any of these samples.
4.10 Bulk Asbestos Samples
The U.S. EPA and NYSDEP define Asbestos Containing Materials (ACM) as any material containing greater than 1% asbestos. No asbestos was identified in the samples collected.
Cushman & Wakefield/44 Wall Street, New York, NY/Project Number N3-7476 Page 9
NYC-WTC 000094941
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NYC-WTC_000094941Source: NYC Law Department, mirrored locally
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Invoice from Benjamin Kurzban & Son to the DEP for work completed at 213 Pearl Street on September 24, 2002.
5 shared non-person entities · similarity 0.978
machine-extracted · confidence unavailable · Check page ↗13 shared non-person entities · 1 shared topics · similarity 0.978
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000120991
Record documenting the transfer and custody of air samples from Building #100 at 345 South End Avenue collected on October 22, 2001.
11 shared non-person entities · 1 shared topics · similarity 0.978
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000100474
Billing statement from a contractor detailing charges for environmental cleanup and facade work.
6 shared non-person entities · 1 shared topics · similarity 0.978
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- 1 Canal Street · 1 pages · confidence 0.00 · verify page 44
- 15 Varick Street · 1 pages · confidence 0.00 · verify page 64
- 290 Broadway · 2 pages · confidence 0.15 · verify page 40
- 44 Wall Street · 83 pages · confidence 0.95 · verify page 1
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- 861 Manhattan Avenue · 2 pages · confidence 0.00 · verify page 70
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