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Revised scopes of work for indoor dust cleaning program, August

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EPA transmits revised scopes of work documents for the indoor dust cleaning and monitoring program, including cleaning SOW #7 and monitoring SOW #7.

NYC-WTC_000139101–000139149

Folder label: “2003 E-Mails Sent M Gilsenan

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NYC 9/11 Public Portal Document

HUD Appendix 13.1. Dioxin wipe samples will be collected in accordance with the procedures specified in ASTMD 6661-01. Wipe samples and copies of necessary documentation will be packed, sealed and shipped daily by courier for next day delivery to Paradigm Analytical Laboratories at: 2627 Northchase Parkway SE, Wilmington NC 28405. g- 24-hour turn-around time shall be specified for the analysis ofall samples collected using the aggressive air sampling method. Standard turn-around time shall be specified for analysis of modified aggressive air samples and wipe samples. h. The Monitoring Contractor will document all thenecessary information regarding sampling activities, fill out all field logs, data sheets, and chain-of-custody forms. The Monitoring Contractor will use F2L for all sample and chain-of-custody documentation. 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. 1. All information must be maintained using the secure EPA website (url, user name and password to be provided by EPA). Information on sampling activities (date, sample ID) shall be provided to EPA, via the website, within 24 hours ofcompletion ofsampling. All data shall be maintained as confidential.

Deliverables

The Project Monitor will keep a field notebook, document the size ofthe sampled area, sampling locations (including a field sketch) and equipment used during the collection of samples (leaf blower, fan, etc.). 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 elapsed time (min), calculated sample volume (L), pump fault, weather, quality assurance samples (lot blank) sampling dates and sample identification numbers (sample IDs), complete chain-of-custody forms, 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.

9. Pre-cleaning and Post-cleaning Wipe Sampling Procedures

a. The Project Monitor will collect pre-cleanup and post-cleanup wipe samples at 5 percent ofthe residences cleaned up to a maximum of5 0 residences as instructed by EPA. This sampling will consist offile collection of3 pre cleaning and 3 post cleaning wipe samples for dioxin, total metals and mercury (Note: a separate wipe sample is required for each parameter). Metals and mercury wipe samples will be collected in accordance with procedures specified in HUD Appendix 13.1. Dioxin wipe samples will be collected in accordance with the procedures specified in ASTMD 6661-01.

b. The Monitoring Contractor will document all the necessary information regarding sampling activities, will ensure personnel complete all field logs, data sheets, and chain-of-custody

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NYC-WTC_000139120

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NYC-WTC_000139120Source: NYC Law Department, mirrored locally

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