Details project scope for scheduling, coordinating, and monitoring dust and debris cleanup with air sampling from apartments affected by World Trade Center collapse.
NYC-WTC_000140337–000140343Folder label: “SCOPES OF WORK IN DOOR AIR & CLEANING”
OCR status: ok · source: pdftotext
NYC 9/11 Public Portal Document
yo d. For studio apartments 3 samples shall be collected. For 1-bedroom apartments and above 5 samples shall be collected. Sampling equipment shall be placed in living areas and away from obstructions. The sampling cassette must be placed on a tripod and not taped to existing surfaces. e. Common spaces will be sampled using modified aggressive sampling techniques (20 inch fans,). For small spaces, less than .2601inear feetand 160 square feet, 3 samples will be collected. For large spaces greato^ffiah^601mear feet or 160 square feet and less than 25,000 square feet 5 samples will be collected. For spaces greater than 25,000 square feet, 1 sample will be collected for each 5,000 square feet. Sampling equipment shall be placed away from obstructions. The sampling cassette mnsthenlaced on a tripod and not taped to existing surfaces. f. AsbestoT^ir samples shall be collected in accordance with the procedures specified m Method 7400. Air sampling pumps will be operated at 10 liters per minute for eight (8) hours to achieve the minimum volume requirement of4800 liters. g* Samples must be labeled and accompanied with completed chain of custody forms before shipping to the designated laboratory. The label must include the EPA Project Tracking Number. Samples will be packed, sealed and shipped to USEPA Contract Laboratory for analysis. h. All information must be maintained using the secure EPA website(url, user name and password to be provided by EPA). Dates for monitoring and/or cleaning shall be provided to EPA electronically in an EPA approved format within 24 hours. Information on sampling activities (date, sample H)} will beprovided to EPA, via the website, within 24 hours ofcompletion of analysis.
16. Pre-cleaning and Post-cleaning Wipe Sampling Procedures
a. The Project Monitor will collect pre and post-cleanup wipe samples at 5 percent of the residences cleaned up to a maximum of 50 units per quadrant. This sampling will consist of the collection of 3 pre clean-up and 3 post clean-up wipe samples for total metals and mercmy (Note: a,separate wipe sample is require for analysis for mercury). All wipe samples will be collected in accordance with procedures specified in HUD Appendix 13.1.
b. Samples must be labeled and accompanied with completed chain of custody forms before shipping to the designated laboratory. The label must include the EPA Project Tracking Number. Samples will be packed sealed and shipped to USEPA Contract Laboratory for analysis. Metals samples will be analyzed using EPA Method SW- 846 601OB. Mercury samples will be analyzed using EPA Method SW-846 7471.
17. Post Clean-up Air Sampling Procedures a. Sampling shall not begin until a visual inspection confirms the absence of visible dust and debris. Post cleaning air sampling shall be completed within 24-hours of the completion of cleaning activities. b. All surfaces must be completely diy prior to the start of sampling.
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NYC-WTC_000140341
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NYC-WTC_000140330
Details project scope for scheduling, coordinating, and monitoring dust and debris cleanup with air sampling from apartments affected by World Trade Center collapse.
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Specific instructions for collecting bulk dust samples, labeling containers, and repairing insulation disturbed during sampling activities.
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Distribution of revised scopes of work documents for WTC indoor cleaning and monitoring contracts.
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EPA transmits revised scopes of work for WTC indoor cleaning and monitoring contracts to DEP.
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Forwarded draft Statements of Work for cleaning and monitoring activities requiring review by noon.
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Updated WTC monitoring scope of work including technical notes on dust control methods and equipment.
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EPA request for review and feedback on draft scope of work documents for WTC cleaning and air monitoring contractors.
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