Document providing non-mandatory guidelines for HVAC system assessment, cleaning, and containment levels in 2002.
NYC-WTC_000139929–000139930Folder label: “EPA HVAC ACTION PLAN (Indoor Clean up)”
OCR status: ok · source: pdftotext
NYC 9/11 Public Portal Document
Assessment, Cleaning and Restoration of HVAC Systems -ACR 2002
Guideline to Assessment, Cleaning, and Restoration of HVAC Systems 2002
The following guideline provides supplementary reference information for users ofACR 2002. The material contained within the guideline does not carry the official status of a standard, and the guideline recommendations are not mandatory under 2002. However, the two sections compliment one another and should always be considered in tandem.
Chapter 1 Containment Strategies Containment strategies are used to isolate a workspace from other areas of a building. Most containment strategies involve creating barriers that prevent the dispersal of airborne particulate. Depending on the use classification of a building and the contaminants known to exist within the HVAC system, several different containment strategies may be employed. Four levels of work site containment are described below. The containment requirements for each level increase in stringency. The highest levels of contaimnent are applicable to areas where significant microbial growth exists, or where the building use classification mandates special protection, as in a healthcare facility. As new information comes forth regarding microbiological contaminants and their affect on human health, the containment strategies recommended below may require enhancements. Level 1 Containment - Minimum Engineering Controls Level 1 Containment is applicable to HVAC system cleaning in buildings classified as residential, industrial, light commercial and marine, provided that there is no known microbial contamination. If microbial contamination is known to exist. Level 2 Containment may apply. The following protective actions are required under Level 1 Containment strategies. ■ Protective Coverings - Clean, protective coverings shall be used within each work area. Protective covering must extend beyond the work area to provide protection of flooring, equipment, and furniture whenever necessary. ■ Cleaning Equipment - Inlet openings on all vacuum collection devices and negative air machines shall be properly sealed during transport and when the equipment is not in use. Vacuum hose openings shall be sealed during transport. All tools, equipment, and equipment components that enter the HVAC system from an occupied space shall be wet-wiped, HEPA vacuumed, or sealed in a disposable polyethylene bag during removal from the HVAC system.
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NYC-WTC_000139929
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NYC-WTC_000139933
Document outlining the three-step process for assessing, classifying, and cleaning HVAC systems to ensure indoor environmental safety.
1 shared non-person entities · 1 shared topics · Same agency, volume and box · similarity 0.898
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000140489
Draft scope of work for a DEP and EPA program providing cleaning assistance to residents south of Canal Street.
1 shared non-person entities · 1 shared topics · Same agency, volume and box · similarity 0.881
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000140481
Draft contract scope defining compliance requirements and assistance programs for cleaning World Trade Center dust in residences.
1 shared non-person entities · 1 shared topics · Same agency, volume and box · similarity 0.879
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000140443
Draft contract scope outlining compliance requirements and a direct assistance program for residents south of Canal Street.
1 shared non-person entities · 1 shared topics · Same agency, volume and box · similarity 0.875
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000140517
Departmental comments and requests for clarification regarding cleaning triggers, clearance levels, and supervision requirements.
1 shared non-person entities · 1 shared topics · Same agency, volume and box · similarity 0.875
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000140603
Contract establishing requirements for third-party asbestos monitoring and air sampling in residential buildings.
1 shared non-person entities · 1 shared topics · Same agency, volume and box · similarity 0.874
machine-extracted · confidence unavailable · Check page ↗1 shared topics · similarity 0.889
machine-extracted · confidence unavailable · Check page ↗1 shared topics · similarity 0.889
machine-extracted · confidence unavailable · Check page ↗1 shared topics · similarity 0.884
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000162731
EPA submits detailed technical questions and comments on proposed HVAC cleaning procedures for WTC buildings.
1 shared topics · similarity 0.880
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000151471
Letter advising EPA that DEP's Bureau of Environmental Compliance reviewed the draft cleaning contract scope for World Trade Center indoor dust cleaning.
1 shared non-person entities · 1 shared topics · similarity 0.875
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000097177
Permit application requesting licensed asbestos contractors to clean debris and dust from the interior of 125 Cedar Street.
1 shared non-person entities · 1 shared topics · similarity 0.875
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_000139856
Notice instructing that original World Trade Center documents must be preserved as evidence and not disposed of by the Law Department.
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NYC-WTC_000139857
Document header instructing that original WTC records must be preserved as evidence for potential legal actions.
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NYC-WTC_000139859
Internal memo expressing concerns about advising residents of potential health risks from 15 months of unrealistic HVAC assessment and cleanup, requesting urgent decision-making.
Filed in the same folder
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NYC-WTC_000139861
Memo requesting EPA ensure factual information about HVAC matters be prepared for presentation at meeting with City officials, FEMA, and public communications consultant.
Filed in the same folder