Draft Statement of Work for indoor dust sampling, 2002

NYC 9/11 Public Portal Document

Areas of known activity Air pump operated at 10L/min for8 hours to achieve the COPC PCM NIOSH 7400 followed by TEM AHERA (living rooms, family Asbestos NK)SH7400 wkgroup detection limits method. ----------rooms)---------- NIOSH 7300 Air pump operated at lOL/min for 8 hours to achieve the COPC Lead SW-8466010B wkgroup detection Imits TBD Pending sample volume PAHs lequiFeinents and to account for Pilot dean-up study only SW-846 8270 break through on the cassettes. Indoor Air TBD Pending sample volume Pilot dean-up study only. AvaiiabSty of sample cassettes for Dioxins lequkemenls and to account for dioxins anal^ is questionable. Apparently the supply is low. SW-846 S290 break through on the cassettes. Air pump operated at 2.5LZmiii for 8 hours to achieve the COPC Silica NIOSH 7500 NIOSH 7500 (XRD) wkgroup detection limits

MMVF Assumed that it behaves the same as asbestos, samples wM be NIOSH 7400 EMSLMSD.0300 combined with the asbestos sampfing.

NOTE; Al samples (cassettes and wipes) wW be pteweighed by the laboratory or supplier prior to sample colection. After sample collection and upon receipt of the samples by the laboratory, the laboratory wM weigh the sample wipe or cassette prior to perfonning the analysis. This may change riapendirtg upon the availability of preweighed materials. May collect samptes for total dust

** Silica win be cofected as a dust samples as is Lead. This was decided since pulverized slica would be partioulate like and not IBjer like as wHh asbestos and httdVF.

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