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Revised scopes of work for cleaning and monitoring, July 2002

Machine-extracted title · confidence 88%

EPA transmits revised statements of work for WTC cleaning and monitoring activities incorporating modifications and additions discussed in interagency meeting.

NYC-WTC_000163864–000163882

Folder label: “E-mails M. Gilsenan 2002

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NYC 9/11 Public Portal Document

ThePrpject Monitor shall review all deliverables prior to submission to EPA. The review shall assure that each tteliverableisWairate and coiapletes 'technically sound, and free ofclerical errors.

The Project monitor shall record equipment used to collect the sample {leafblower, fen, etc.) and eize of space daily in the field notebook. In addition, date, start and •coaiptelion dates for ■&© cleaning, sample media, flow niedia type, flow rates (start/final, flo'w rate (average), time (stait'finish). Total elapsed time (min). calculated sample volume (I.). pmnp fault, weather, units. QC samples (lot blank) sampling dates and sample identification numbers sample IDs, complete chain of custody, EPA Project Tracking Numbers and laboratory address shall be entered into an agreed Upbn electronic format or website hpprox ed by EPA within 24 hours of aciivity.

16. Pre-cleaning and Post-cleaning Wipe Sampling Procedures^

a. The Project Monitor will collect pre and posl-eleanup w ipe samples at 5 percent of the residences cleaned up to a maximum 01'50 units per quadrant as instructed by EPA./TMs sampling will consist of the collection of 3 pre dean-up and 3 post dean-up wipe samples for dioxin, total metals and mercury <Note: a separate wipe sample is required for each parameter). Ml wipe sampleswill becollected in accordance with procedures specified in HUD Appendix 13.1.

[Neefl-to veriiy that HIJD■procedure is appropriate for Dioxin j

B. The contractor shall document all the necessary information regarding .sampi ing activities, fill out all field logs, data sheets, and chain-of-custody fomis. The contractor shall use F2L for all sample and chain-of-custody documentation. Saifiples-must be labeled and accompanied with completed chain of custody fonas before shipping to the designated laboratory. The label mu>i include the EPA Project Tracking Number. Samples willbe packed, sealed and hand-deli\ ered for analysis to EMSL laboratories at: 307 W. 38* St., ' New York, New York 212-290-0051. Metals sample.^ will be analyzed using EPA Method SW-846 601 OB. 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 del i verable is accurate andeomplete, technically sound, and free ofclerical errors.

The Project Monitor shall complete chain of custody and record the number of wipe samples, record EPAProject Tracking Numbers, laboratory address, date, ^and sample IDs in an agreed upon electronic format or website approved by EPA within 24 hours of activity.

17. 'Post Cleaii-iip Air Samplihg Procedures a. Sampling shall not begin until a visual inspection coafions the absence ofvisible dust and

NYC-WTC_000163880

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NYC-WTC_000163880Source: NYC Law Department, mirrored locally

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