14 shared non-person entities · 1 shared topics · Same agency, volume and box · similarity 0.994
machine-extracted · confidence unavailable · Check page ↗Document / 30 pages
E-mails 2003 M. Gilsenan
Label derived from the City's folder field. The City does not supply document titles.NYC-WTC_000162860–000162889Page image
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NYC 9/11 Public Portal Document
Crystalline Air samples NIOSH 7500 NIOSH 7500 (XRD) 14 days Silica Asbestos Air samples Collection using Asbestos Fiber Analysis by 1 day NIOSH 7400 Transmission Electron Microscopy (TEM) Performed by EPA 40 CRF Part 763 Final Rule (AHERA) [see Attachment 1] and NIOSH 7400 (PCM)
Asbestos Air Sample Collection and Analysis
1. All asbestos air sampling methodologies shall be in accordance with the applicable sections of Title 15, Chapter 1 of the Rules of the City of New York and AHERA. (see reference in Table 1)
2. Asbestos air samples shall be analyzed in accordance with EPA 40 CRF Part 763 Final Rule (AHERA) using a transmission electron microscope (TEM) and reported as shown in Attachment I. For the TEM analysis, two size fiactions should be reported, a fraction that represents fibers >0.5 microns and a fraction that represents fibers >5 microns. The fraction that represents the fibers >5 microns is considered to be the PCM equivalent (i.e., PCMe) that should be compared to the primary clearance value of 0.0009 s/cc. In addition, the asbestos air samples shall be analyzed in accordance with NIOSH 7400 for standard PCM analysis. These results shall be reported on a separate sheet. The detection limit shall be 0.0004 f/cc.
3. A turnaround time of 24 hours is required for all samples.
Asbestos Air Monitoring
1. Five (5) ambient air samples shall be collected outside but in the general vicinity of the work site. Samplers shall be placed in reasonable proximity to the building and away from obstructions, vents, and drafts that may unduly affect airflow.
2. Five (5) air samples shall be collected per day during cleanup activities. The flow rate shall be set at the minimum collection flow rate specified by the manufacturer for the sampling pump. The flow rate shall not exceed 3 liters per minute. A minimum sampling volume of 3600 liters shall be collected.
Samples shall be collected at isolation barriers outside the work area, the clean room of the worker/waste decontamination facility, and outside of the building
3. Sample collection methodologies shall be in accordance with Title 15, Chapter 1 of the Rules of the City of New York (RCNY) and AHERA regarding documentation and sample locations and the requirements set forth herein regarding the rates of flow, and required volumes to achieve the necessary analytical sensitivity. 4 of 6
NYC-WTC_000162882
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NYC-WTC_000162882Source: NYC Law Department, mirrored locally
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machine-extracted · confidence unavailable · Check page ↗15 shared non-person entities · 1 shared topics · Same agency, volume and box · similarity 0.990
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machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000155394
Transmission of cleanup and environmental monitoring documentation for 114 Liberty post-WTC dust remediation project.
14 shared non-person entities · 1 shared topics · similarity 0.994
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000100690
Permit application for a licensed asbestos contractor to clean interior dust at the unoccupied 114 Liberty Street building.
15 shared non-person entities · 1 shared topics · similarity 0.992
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000102620
Scope of work document dated February 2003 detailing a mandatory pre-bid meeting and requirements for asbestos abatement contractor cleaning at 114 Liberty Street.
15 shared non-person entities · 1 shared topics · similarity 0.992
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000102605
Scope of work document dated February 2003 detailing a mandatory pre-bid meeting and requirements for asbestos abatement contractor cleaning at 114 Liberty Street.
15 shared non-person entities · 1 shared topics · similarity 0.991
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.
15 shared non-person entities · 1 shared topics · similarity 0.990
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- 114 Liberty Street · 13 pages · confidence 0.70 · verify page 5
- 114 UBERTY ST · 1 pages · confidence 0.15 · verify page 19
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