Criteria for distinguishing WTC dust from other contaminants and determining the need for cleaning or sampling.
NYC-WTC_000140475Folder label: “SCOPES OF WORK IN DOOR AIR & CLEANING”
OCR status: ok · source: pdftotext
NYC 9/11 Public Portal Document
ADDENDUM #2 World Trade Center Dust Cleaning Program Monitoring Contract Scope of Work
whether or not there are materials that are likely not associated with WTC- related dust such as building-related asbestos-containing materials, animal . carcasses, delaminating lining material, visible mold growth, water damage, fecal matter, feathers or other evidence of animals, etc.
Historical Assessment
The evaluation team shall attempt to describe any other available information from site occupants or building managers, such as the known status of system operating conditions at the time of the WTC collapse, ventilation system maintenance (i.e., cleanings, filter changes, or replacement since the WTC collapse). ( Based on these assessments, to the best of his/her ability the Environmental Professional will state a general impression of the overall cleanliness of each component, and whether or not it appears to be impacted by WTC-related dust
6.5.2.3 Environmental Sampling Procedure
If the evaluation team determines that the ventilation equipment appears to have been impacted by WTC-related dust, cleaning will be recommended and environmental sampling will not be required. This information shall be included in the HVAC system evaluation report. The HVAC system evaluation report must be sent to EPA electronically in PDF format.
In the absence of environmental sampling that indicates otherwise, WTC-related dust shall be assumed to be an asbestos-containing material and cleaning procedures shall be performed in accordance with procedures for asbestos decontamination (see section 5.0).
If dust or debris is present and it is not apparent that it is related to the collapse of the WTC, a maximum of 5 bulk samples will be collected and analyzed for pH, fibrous glass and crystalline silica. These samples and copies of necessary documentation shall be shipped daily by courier for next day delivery to EMSL Analytical Inc., 107 Haddon Avenue, Westmont, NJ 08108 (Tel: 856-858-4800). This data will be used to determine if the sampled dust is fi’om the collapse of the WTC. Dust will be considered WTC-related if: pH is 9 or above; fibrous glass content is between 30 and 40 % and crystalline silica content is 5% or greater. Laboratory data will be reported back to the Monitoring Contractor and shall be included in the HVAC system evaluation report. The HVAC system evaluation report must be sent to EPA electronically in PDF format.
Sampling Procedures
1. Sampling of interior dust may only be performed by the Environmental Professional.
2. Minimum personal protective equipment used by the Environmental Professional shall include a disposable protective coveralls, a PlOO respirator, safety glasses, and disposable gloves.
NYC-WTC_000140475
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NYC-WTC_000140300
Scope of work detailing evaluation procedures for HVAC systems to assess World Trade Center dust impact and cleaning recommendations.
9 shared non-person entities · 1 shared topics · Same agency, volume and box · similarity 1.000
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000140465
Guidance document providing procedures for evaluating the presence of World Trade Center dust in residential ventilation systems.
3 shared non-person entities · 1 shared topics · Same agency, volume and box · similarity 0.963
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000140290
Guidance document for determining presence of World Trade Center-related dust in residential ventilation systems in Lower Manhattan.
3 shared non-person entities · 1 shared topics · Same agency, volume and box · similarity 0.961
machine-extracted · confidence unavailable · Check page ↗9 shared non-person entities · Same agency, volume and box · similarity 0.954
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000140582
Multi-agency review comments on draft scope of work for WTC indoor dust cleaning and monitoring.
5 shared non-person entities · 1 shared topics · Same agency, volume and box · similarity 0.937
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000140301
Technical procedures for collecting, sealing, and labeling bulk dust samples during HVAC system evaluation.
2 shared non-person entities · 1 shared topics · Same agency, volume and box · similarity 0.932
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000140476
Protocols for collecting bulk dust samples from HVAC systems and documenting sample locations and conditions.
2 shared non-person entities · 1 shared topics · Same agency, volume and box · similarity 0.932
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000140384
Procedures for collecting bulk dust samples, labeling containers, and cleaning respirators following sample collection activities.
2 shared non-person entities · 1 shared topics · Same agency, volume and box · similarity 0.931
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000140945
Document explaining the process for requesting EPA assistance to clean common areas and evaluate HVAC systems in residential buildings.
3 shared non-person entities · 1 shared topics · Same agency, volume and box · similarity 0.930
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000139976
Informational document explaining the EPA/DEP program for evaluating and cleaning HVAC systems in residential buildings.
3 shared non-person entities · 1 shared topics · Same agency, volume and box · similarity 0.930
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000140295
Identification of ventilation system components most likely to have WTC-related dust accumulation, including air intakes, dampers, filters, and downstream components.
1 shared non-person entities · Same agency, volume and box · similarity 0.930
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000163408
Second addendum to monitoring scope including HVAC system checklist and inspection procedures.
9 shared non-person entities · 1 shared topics · similarity 0.957
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NYC-WTC_000140280
Document header reiterating the requirement to preserve World Trade Center documents for potential legal proceedings against the City.
Filed in the same folder
Draft contract scope defining regulations and procedures for asbestos cleanup and air sampling assistance programs in Lower Manhattan.
Filed in the same folder
NYC-WTC_000140283
Contract excerpt specifying data submission protocols, laboratory delivery instructions, and monitoring responsibilities for the WTC project.
Filed in the same folder
NYC-WTC_000140284
Addendum to a City contract requiring contractors to handle property claims and authorizing additional financial retainage for performance security.
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NYC-WTC_000140286
Review comments on a proposed scope of work document regarding the roles of technicians and monitors in the World Trade Center cleanup process.
Filed in the same folder