Sampling methods for WTC dust analysis, 2002

NYC 9/11 Public Portal Document

ATTACHMENT 2

WTC Indoor Air Monitoring - Sampling and Analytical Procedures Analytical Sampling Method Proposed Sampling Vulnerability/Practicality Media Sampling Points Analytical Method Proposed Parameters

Carpets, fabric furniture or Settled drapery in areas of activity This is a micro vacuuming method. Three collocated samples will Dust (living rooms, family Asbestos ASTM D 5755-95 be collected from each location. ASTM D 5755-95 Porous rooms) Soft surfoces This is a micro vacuuming method. Three collocated samples vrill Lead ASTM E 1973-99 SW-846 601OB be collected from each location. Horizontal surfaces of tables or counters and Asbestos ASTM D 6480-99 Wipe Samples ASTM D 6480-99 (wipe) bare floors, ceilings and walls in areas of activitv (living rooms, family rooms) Lead ASTM E 1728 Wipe Samples SW-846 601 OB Settled Dust Non-porou Dioxins ASTM D 6661-01 Wipe Samples ASTM 6661-01/SW-846 8290 s Hard surfaces PAHs ASTM D 6661-01 Wipe Samples ASTM 6661-01/SW-846 8270C

Silica ASTM E 1728“ Wipe Samples NIOSH 7500 (XRD)

MMVF ASTM D 6480-99 Samples will be combined with the asbestos sampling. EMSL MSD.0300

Areas of known activity Air pump operated at lOL/min for 8 hours to achieve the COPC PCM NIOSH 7400 followed by TEM AHERA (living rooms, family Asbestos—. wkgroup detection limits method. ----------rooms)--------- n erated at 10L/min for 8 hours to achieve the COPC wkgroup detection limits SW-846 601 OB

PAHs requirements and to account for Pilot clean-up study only SW-846 8270 break through on the cassettes. Indoor Air TBD Pending sample volume Pilot clean-up study only. Availability of sample cassettes for Dioxins requirements and to account for SW-846 8290 break through on the cassettes. dioxins analysis is questionable. Apparently the supply is low.

Air pump operated at 2.5Umin for 8 hours to achieve the COPC Silica NIOSH 7500 NIOSH 7500 (XRD) wkgroup detection limits

MMVF NIOSH 7400 Assumed that it behaves the same as asbestos, samples will be EMSL MSD.0300 combined with the asbestos sampling.

NOTE: All samples (cassettes and wipes) will be preweighed by the laboratory or supplier prior to sample collection. After sample collection and upon receipt of the samples by the laboratory, the laboratory will weigh the sample wipe or cassette prior to performing the analysis. This may change depending upon the availability of preweighed materials. May collect samples for total dust

“ Silica will be collected as a dust samples as is Lead. This was decided since pulverized silica would be particulate like and not fiber like as with asbestos and MMVF.

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