OCR status: ok · source: pdftotext
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_000162906
Document tracking the chain of custody for environmental monitoring samples at 114 Liberty Street on February 7, 2003.
14 shared non-person entities · 1 shared topics · Same agency, volume and box · similarity 0.994
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000155617
Distribution of revised draft scopes of work documents for the 114 Liberty Street project.
15 shared non-person entities · 1 shared topics · similarity 0.997
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000155635
Submission of contract changes to scope documents awaiting final approval and bidder lists.
14 shared non-person entities · 1 shared topics · similarity 0.996
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000155407
Review of monitoring contractor specifications for asbestos and dioxin sampling at 114 Liberty Street.
15 shared non-person entities · 1 shared topics · similarity 0.994
machine-extracted · confidence unavailable · Check page ↗15 shared non-person entities · 1 shared topics · similarity 0.994
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 ↗15 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_000138897
Internal DEP coordination regarding comments on 114 Liberty procedures and preparation of a response.
15 shared non-person entities · 1 shared topics · similarity 0.990
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
machine-extracted · confidence unavailable · Check page ↗Similar subjects in other documents. Similarity does not establish the same event, measurement or conclusion.
NYC-WTC_000155635
Submission of contract changes to scope documents awaiting final approval and bidder lists.
Similarity score 0.999 (not a probability)
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000155617
Distribution of revised draft scopes of work documents for the 114 Liberty Street project.
Similarity score 0.986 (not a probability)
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000162890
Technical discussion regarding discrepancies in NIOSH method flow rates and requirements for large sample volumes at 114 Liberty Street.
Similarity score 0.985 (not a probability)
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000155617
Distribution of revised draft scopes of work documents for the 114 Liberty Street project.
Similarity score 0.985 (not a probability)
machine-extracted · confidence unavailable · Check page ↗Similarity score 0.985 (not a probability)
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000155430
Technical correspondence addressing asbestos air sampling methodology and pump flow rate specifications.
Similarity score 0.984 (not a probability)
machine-extracted · confidence unavailable · Check page ↗Machine-extracted building matches; verify each source. Buildings, never households.
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NYC-WTC_000155635
Submission of contract changes to scope documents awaiting final approval and bidder lists.
Cited alongside this record in an Ask answer
NYC-WTC_000155525
Initial draft of the comprehensive scope of work required to safely clean 114 Liberty Street following environmental damage.
Cited alongside this record in an Ask answer
Cited alongside this record in an Ask answer
Report documenting an asbestos inspection conducted at 114 Liberty Street by ETS Construction.
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NYC-WTC_000100879
Permit document detailing the installation of a heavy-duty shed and facade repairs at 114 Liberty Street in May 2002.
Cited alongside this record in an Ask answer