Distribution of revised scopes of work documents for WTC indoor cleaning and monitoring contracts.
NYC-WTC_000138626–000138658Folder label: “E-Mails Hotline M. Gilsenan”
OCR status: ok · source: pdftotext
NYC 9/11 Public Portal Document
d. Common spaces will be sampled using modified aggressive techniques (20 inch fans). For small spaces, less than 160 square feet, 3 samples will be collected. For large spaces greater than 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 must be placed on a tripod directed downward at a 45 degree angle and not taped to existing surfaces. e. Air samples shall be collected in accordance with the procedures specified in NIOSH Method 7400 for PCM and 7402 forTEM. Air sampling pumps need to be monitored to ensure pumps are not clogging by monitoring flow rates, the minimum sample volume required is 3600 liters. A f. The contractor shall document aU the necessary information regarding sampling activities, fill out all field logs, datasheets, and chain-of-custody forms. The contractor shall use F2L for all sample and chain-of-custody documentation. Samples must be labeled and accompanied with completed chain ofcustody forms before shipping to the designated laboratory. The label must include the EPA Project Tracking Number. Samples will be packed, sealed and shipped to EPA Contract Laboratory for analysis. g- 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 ID) shall be provided to EPA, via the website, within24 hours of completion of sampling.
Deliverables
The Project Monitor shall review all deliverables prior to submission to EPA. The review shall assure that each deliverable is accurate and complete, technically sound, and free ofclerical errors.
The Project monitor shall record equipment used to collect the sample (leafblower, fan, etc.) and size of space daily in the field notebook. In addition, date, start and completion dates for the cleaning, sample media, flow media type, flow rates (start/final, flow rate (average), time (start/finish). Total elaiS^fme (min), calculated sample volume (L), pump fault, weather, units, QC samples (lot blank) sampling dates and sample identification numbers sample IDs, complete chain ofcustody, EPA Project Tracking Numbers and laboratory address shall be entered into an agreed upon electronic format or website approved by EPA within 24 hours of activity.
16. Pre-cleaning and Post-cleaning Wipe Sampling Procedures
a. The Project Monitor will collect pre and post-cleanup wipe samples at 5 percent ofthe residences cleaned up to a maximum of5 0 units per quadrant as instructed by EPA. This sampling will consist ofthe collection of3 pre clean-up and 3 post clean-up wipe samples for total metals and mercury (Note: a separate wipe sample is require for analysis for mercury). All wipe samples will be collected in accordance with procedures specified in
NYC-WTC_000138640
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NYC-WTC_000138725
EPA transmits revised scopes of work for WTC indoor cleaning and monitoring contracts to DEP.
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Circulation of latest draft cleaning and monitoring statement of works for WTC for review and comment.
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EPA circulates latest draft scopes of work for WTC indoor dust cleaning program requesting comments.
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Administrative notice instructs staff to preserve original World Trade Center documents for potential litigation.
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Internal DEP correspondence discussing EPA draft scope of work for WTC program and clarifying agency roles and responsibilities.
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DEP requests review of attached Scope of Work documents for mold remediation and air monitoring contracts.
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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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Forwarded draft Statements of Work for cleaning and monitoring activities requiring review by noon.
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NYC-WTC_000138375
Notice instructing staff to preserve original World Trade Center documents for potential future legal actions.
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NYC-WTC_000138376
Notice instructs staff to preserve original World Trade Center documents as evidence for potential future legal actions against the City.
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NYC-WTC_000138377
DEP memo documenting closure of environmental assistance desk following decline in public inquiries about water quality, air quality, asbestos, and dust.
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