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Air and wipe sample collection procedures for dioxin and metals,

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Technical specifications for collecting air samples via NIOSH methods and wipe samples for dioxin, metals, and mercury analysis.

NYC-WTC_000140371

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

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NYC 9/11 Public Portal Document

sample will be collected for each 5,000 square feet. Sampling equipment shall be placed away from obstractions; 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 7400 Method for PCM and 7402 for TEM. Air sampling cassettes need to be monitored to ensure pumps are not clogging by monitoring flow rates. The minimum sample volume required is 3600 liters. f. Wipe samples will be collected at 10 percent of the residences where sampling only has been requested, up to a maximum of SO units Units should be defined, as instructed by EPA. What are the criteria for s$;tion?*OTs‘sampling will consist of the collection of one wipe sample each * for dioxin, total metals and mercUYy (a separate wipe sample is required for each parameter). Metals and mercury wipe samples will be collected in accordance with procedures specified in I IUD Appendix 13.1. Dioxin wipe samples will be collected in accordance with the procedures specified in ASTMD 6661-01. What are the criteria for where in the residence the wipe sample is collected? and analytes should also be listed in the second page as noted previously. g- The contractor shall document all the necessary JMpi nation regarding sampling activities, fill out all field logs^data sheets^ and n-of-custody forms. The contractor shall use F2L for all^mple £Uid chaiii-of-cusu ly documentation. Samples must be labeled and accompanied ih com raain-of-custody forms before shipping to the designated labor: 4. Th^ TOUst include the EPA Project Tracking Number, ^^les wil € packed, sea!ed and shipped to EPA Contract Laboratory for analysis h. All information must be main! usiiume secure EPA website (url, user name and password to be provided by I ^^^s for monitoring and/or cleaning shall be provided to liPzX electronically in an EPA approved format within 24 hours. ; Information on sampling activities (date, sample ID) shall be provided to EPA, via the ■ website, within 24 hours of completion of sampling.

Deliverables

Project Monitor shallYeview all deliverables prior to submission to EPA. The review ihall assure that each deliverable is accurate and complete, technically sound, and free of clerical errors.

The Project Monitor shall record equipment used to collect the sample (leaf blower, fan; etc;) anti 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 Tracking Numbers and laboratory address shall be entered into an agreed upon electronic format or website approved by EPA within 24 hours of activity.

NYC-WTC_000140371

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NYC-WTC_000140371Source: NYC Law Department, mirrored locally

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