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Forwarding WTC air monitoring scope for final review, Aug 2002

Machine-extracted title · confidence 95%

DEP official requests final review of the latest air monitoring Scope of Work to conclude negotiations.

NYC-WTC_000139257–000139330

Folder label: “2002 E-Mail Sent M. Gilsenan

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NYC 9/11 Public Portal Document

Pt. 763, Subpt. E, App. A 40 CFR Ch. I (7-1-00 Edition)

FIGURE I—SAMPLING CASSETTE CONFIGURATION

Inlet Plug

Cassette Cap

Extension Cowl or Retainer Ring

»« « •

< 0.4 |im pore PC filter or < 0.45 gm pore MCE filter

j 5 MCE Diffuser [

] Support Pad [

O •( Cassette Base

\ ] Outlet Plu^

h. When polycarbonate filters are used, po­ 1. Seal the cassettes to prevent leakage sition the highly reflective face such that around the filter edges or between cassette the incoming particulate Is received on this part Joints. A mechanical press may be use­ surface. ful to achieve a reproducible leak-free seal.

682

NYC-WTC_000139297

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NYC-WTC_000139297Source: NYC Law Department, mirrored locally

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