NYC-WTC_000234715

NYC 9/11 Public Portal Document

WTC Indoor ir t tT|pling and Analytical Procedures Media Sampling Points Analytical Sampling Method Proposed Sampling Vulnerability/Practicality Analytical Method Proposed Parameters

Settled Carpets, fabric furniture Asbestos ASTM D 5755-95 This is a micro vacuuming method. Three collocated samples ASTM D 5755-95 Dust or drapery in areas of will be collected from each location. orous Soft activity (living rooms, surfaces family rooms) Lead ASTM E 1973-99 This is a micro vacuuming method. Three collocated samples SW-846 601 OB will be collected from each location.

Settled Horizontal surfaces of Asbestos ASTM D 6480-99 Wipe Samples ASTM D 6480-99 (wipe) Dust tables or counters and on-porou bare floors, ceilings and s Hard walls in areas of activity surfaces (living rooms, family Lead ASTM E 1728 Wipe Samples SW-846 601 OB rooms) Dioxins ASTM D 6661-01 Wipe Samples ASTM 6661-01 /SW-846 8290

PAHs ASTM D 6661-01 Wipe Samples ASTM 6661-01 /SW-846 8270C

Silica ASTM E 1 728- Wipe Samples NIOSH 7500 (XRD)

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

ndoor Air Areas of known activity Asbestos NIOSH 7400 Air pump operated at 1 OL/min for 8 hours to achieve the PCM NIOSH 7400 followed by TEM AHERA (living rooms, family COPC wkgroup detection limits method. rooms) Lead NIOSH 7300 Air pump operated at 1 OL/min for 8 hours to achieve the SW-846 601 OB COPC wkgroup detection limits PAHs TBD Pending sample volume Pilot clean-up study only SW-846 8270 requirements and to account for breakthrough on the cassettes.

Dioxins TBD Pending sample volume Pilot clean-up study only. Availability of sample cassettes for SW-846 8290 requirements and to account for dioxins analysis is questionable. Apparently the supply is low. O breakthrough on the cassettes. H l"^ Silica NIOSH 7500 Air pump operated at 2.5L/min for 8 hours to achieve the NIOSH 7500 (XRD) COPC wkgroup detection limits S MMVF NIOSH 7400 Assumed that it behaves the same as asbestos, samples will be EMSL MSD.0300 o combined with the asbestos sampling. O O I OTE: 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 o iboratory will weigh the sample wipe or cassette prior to performing the analysis This may change depending upon the avaiiabiiity of preweighed materiais. May coiiect samples for total dust. o CD 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 os with asbestos and MMVF. (JI (JI (JI

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