OCR status: ok · source: pdftotext
NYC 9/11 Public Portal Document
Recommended Sampling Protocols for 125 Cedar Street
1) Sample for WTC COPCs (lead, PAHs, dioxin, asbestos, fibrous glass, and crystalline silica) and mercury in following procedures established in the WTC Indoor Air Pre-Cleanup Pilot Study.
2) Air samples should be collected for asbestos, fibrous glass and silica. Settled dust (wipe samples) should be collected before and after cleaning for lead, mercury, dioxin and PAHs. Aggressive air sampling techniques specified in the Monitoring Contractor SOW should be used.
3) Sampling and analytical methods for lead, PAHs, dioxin, asbestos, fibrous glass, and crystalline silica are specified in the WTC Indoor Air/Environments Monitoring - Sampling and Analytical Procedures for Background and Pilot Cleanup Studies. Mercury wipe samples should be collected in accordance with procedures specified in HUD Appendix 13.1. Mercury wipes should be analyzed in accordance with EPA Method SW-846 7471 A.
4) Sampling frequency is specified in the Pre-Cleanup and Post Cleanup Pilot Study Sampling Matrices. Mercury wipes should be collected at the same frequency and locations specified for lead wipes.
5) Tier III benchmarks specified in Indoor Air Assessment: Selecting Contaminants of Potential Concern and Setting Health Based Benchmarks for asbestos in air (0.0009 f/cc PCMe), lead in settled dust (<25 ug/ft2) and dioxin in settled dust (<4ng/m2) should be used as primary clearance levels for the cleanup (i.e. cleaning should not be considered complete unless these levels are achieved).
6) Tier III benchmarks specified in Indoor Air Assessment: Selecting Contaminants of Potential Concern and Setting Health Based Benchmarks for fibrous glass in air (<0.01 f/cc), crystalline silica in air (0.5 ug/m3), PAHs in settled dust (<0.3mg/m2) should be used as secondary clearance levels for the cleanup. In addition, EPA has developed a secondary clearance level for mercury of of between 1 and 2 mg/m2. Secondary clearance levels should be considered in determining the need for additional cleanup, however failure to meet these levels would not automatically trigger recleaning.
NYC-WTC_000155827
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NYC-WTC_000156044
Summary document outlining key dates from June to September 2002 regarding inspections, scope development, and contract bidding.
10 shared non-person entities · 1 shared topics · Same agency, volume and box · similarity 0.968
machine-extracted · confidence unavailable · Check page ↗10 shared non-person entities · 1 shared topics · Same agency, volume and box · similarity 0.966
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000155997
EPA technical recommendations and protocol for environmental sampling activities at 125 Cedar.
9 shared non-person entities · 1 shared topics · Same agency, volume and box · similarity 0.963
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000155869
Letter from the Department of Transportation confirming coordination efforts for the reconstruction and cleanup of 125 Cedar Street.
5 shared non-person entities · 1 shared topics · Same agency, volume and box · similarity 0.959
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000155894
Report on asbestos/HVAC consultant recommendations and planning for metals, mercury, and dioxin testing.
8 shared non-person entities · Same agency, volume and box · similarity 0.950
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000155891
EPA memo summarizing commitments and issues raised during meeting with 125 Cedar residents on recovery efforts.
6 shared non-person entities · Same agency, volume and box · similarity 0.949
machine-extracted · confidence unavailable · Check page ↗9 shared non-person entities · Same agency, volume and box · similarity 0.948
machine-extracted · confidence unavailable · Check page ↗9 shared non-person entities · similarity 0.968
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000163326
Forwarding EPA sampling recommendations for incorporation into scope of work for 125 Cedar and 114 Liberty buildings.
9 shared non-person entities · similarity 0.967
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000163312
EPA sends sampling recommendations and attached documents for 125 Cedar Street.
9 shared non-person entities · similarity 0.967
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000096827
Document identified only by its archive reference number with no visible text content in the excerpt.
9 shared non-person entities · similarity 0.951
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000097083
Legal firm transmits confidential information regarding environmental work to EPA Region 2 via fax.
9 shared non-person entities · similarity 0.949
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_000155793
Notice instructing recipients to preserve original World Trade Center documents as evidence and prohibiting their disposal.
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NYC-WTC_000155794
Cover sheet for a fax transmission sent from the US EPA Region 2 office in August 2002.
Filed in the same folder
NYC-WTC_000155800
Cover sheet for a fax transmission sent from the US EPA Region 2 office in August 2002.
Filed in the same folder
NYC-WTC_000155806
Cover sheet for a fax transmission sent from the US EPA Region 2 office to an external recipient in August 2002.
Filed in the same folder
Filed in the same folder