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Scope of Work: Air sampling procedures for WTC dust cleaning,

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Details requirements for labeling samples, completing chain-of-custody forms, and submitting data to EPA within 24 hours.

NYC-WTC_000140368

Folder label: “SCOPES OF WORK IN DOOR AIR & CLEANING

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NYC 9/11 Public Portal Document

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j- 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 for analysis to EMSL laboratories at* 307 W. 38‘** St, New York, New York 212-290-0051. k. All information must be maintained using the secure EPA w^site (urt. 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 hot^ Information on sampling activities (date, sample ID) will be provided to I - PA, via the website, within 24 hours of completion of ex aluation.: ' ■ _

Deliverables

The Project Monitor shall review all detiverablcs prior to siibmi|mn to EPA. The review shall assure that each deliverable is accurate and complete, technically sound, and free of clerical errors.

The Project Monitor shall record all pos fcaning information in the EPA Indoor Air database or an agreed upon el lid format J lis information shall include, but is not limited to sampljm technique (agg ■veormodifii 1 aggressive), visually cleaned (Y/N), damage claim (Y/M, and post clcan-i status (pas^ 1). Dates and times shall be associated with all activities including skBI id finish date.

Additional information including but not limited to, absence of dust/debris, equipment used (leaf bfower, fan etc^-^ze ofspace, start and completion dates for the cleaning, sample media, flow media type, flow rates (start'final, flow rate (average), time (start/finish), total elapsed tidfc (min), calculated sample volume (L), pump fault, weather, units, QC samples (lot blank), mnpling dates, sample IDs, complete chain-of-custody forms, EPA Project Tracking Numbers rand laboratory address shall be entered into an agreed upon electronic format or website i approved by EPA within 24 hours of activity. Dates and times shall be associated with all Activities including start and finish date.

1 The Project Monitor will complete a daily report which documents cleaning starts, continuations, completions, air sampling, recleaning and any delays or difficulties encountered.

Deliverables

The Project Monitor shall review all deliverables prior to submission to EPA. The review shall

NYC-WTC_000140368

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