Final scope of work documents for indoor dust cleaning and monitoring contractor activities in WTC cleanup program.
NYC-WTC_000161325–000161348Folder label: “E-mails R. Avaltroni 2002”
OCR status: ok · source: pdftotext
NYC 9/11 Public Portal Document
and shall not be turned off until sampling is completed. e. For studio apartments 3 air samples shall be collected. For 1-bedroom apartments and above, 5 air 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, not taped to existing surface and should be directed downward at a 45 degree angle. f. Common spaces will be sampled without the use of forced air devices (fans, leaf blowers etc). 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,' 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. g- Air samples will be collected and analyzed in accordance witihi the procedures specified in NIOSH 7400 Method foUowed by AHERA TEM. Air s ipling cassettes need to be monitored to ensure that cassettes are not clogging by monitoring flow rates. The mini sampling volume required is 3600 liters. All clearance air samples and copies of necessary documentation shall be hand delivered daily to EMSL Laboratories at: 307 W. 38* St, New York, New York 212-290-0051. h. 24-hour tum-around time shall be specified for the analysis of all post-cleaning air samples for Scope B cleanups and for all samples collected using the aggressive air sampling method. Standard tum-around time shall be specified the analysis of air samples collected for Scope A cleanups using the modified aggressive air sampling method. 1. The Monitoring Contractor shall document all the necessary information regarding sampling activities, fill out all field logs, data sheets, and chain-of-custody forms. The Monitoring Contractor shall use F2L for all sample and chain-of-custody documentation. Si lies 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. j- 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 and DEP electronically in an EPA approved format within 24 hours. Information on sampling activities (date, sample ID) will be provided to EPA, via the website, within 24 hours of completion of evaluation. All data shall be maintained as confidential.
Deliverables
The Project Monitor shall record all post-cleaning information m the EPA Indoor Air database or an agreed upon electronic format. This information shall include, but is not limited to sampling technique (aggressive or modified aggressive), visually cleaned (Y/N), damage claim (YZN), and post cleaning status (pass/fail). Dates and times shall be associated
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NYC-WTC_000161337
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