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Updated WTC cleaning and monitoring scopes of work, July 2002

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Distribution of updated statement of work documents for WTC cleaning and monitoring programs.

NYC-WTC_000138585–000138604

Folder label: “E-Mails Hotline M. Gilsenan

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NYC 9/11 Public Portal Document

to EPA electronically in an EPA approved format within 24 hours. Information on sampling activities (date, sample ED) shall be provided to EPA, via the website, within 24 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 elapsed time (min), calculated sample volume (L), pump fault, weather, units, QC samples (lot blank) sampling dates and sample identification numbers (sample IDs), complete chain- of-custody forms, EPA Project TrackingNumbers and laboratoiy address shall be entered into an agreed upon electronic format or website approved by EPA within 24 hours of activity.

4. Pre-cleaning and Post-cleaning Wipe SampUng Procedures

a. The Project Monitor will collect pre-cleanup and post-cleanup wipe samples at 5 percent ofthe residences cleaned up to a maximum of 50 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 dioxin, total metals andmercury (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 contractor shall document all the necessary information regarding sampling activities, fill out all field logs, data sheets, 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-of-custody forms before shipping to the designated laboratory. The label must include the EPA Project Tracking Number. Samples will be packed, sealed and hand-delivered for analysis to EMSL laboratories at: 307 W. 38* St., New York, New York 212-290-0051. Metals samples will be analyzed using EPA Method SW-846 601OB. Mercury samples will be analyzed using EPA Method SW-846 7471A.

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 complete chain-of-custody forms and record the number of wipe

NYC-WTC_000138598

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NYC-WTC_000138598Source: NYC Law Department, mirrored locally

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