NYC-WTC_000232959

NYC 9/11 Public Portal Document

Summary of Residential Sampling Survey Form Results and Review of Photographs (Abbreviations and terms used in the table are defined on the last page in this table.)

Number of Event Broken Dust Visible Dust Visible Residence Cleaning Aggressive Level of Dust Number Location Windows Initially Currently Occupied Method Sampling in Photo Photo Comments

14 Residence 2 0 Ml Y U None Y None Visible Pile of trash swept into center of room; no WTC dust 15 Outside 0 N None Visible Bulk sample from roof top courtyard, 15 Common 0 SI Y MS None Visible Dust visible in (and sampled from) cracks between tiles. 15 Residence 1 0 SI Y U o Y None Visible 15 Residence 2 0 SI N U O Y None Visible 16 Outside 0 N None Visible 16 Common 0 Ml N C None Visible 16 Residence 1 0 MS None Visible 16 Residence 2 0 LI N Y O N No picture 17 Outside 0 N Slight Amount Dirty/messy, but doesn't look like WTC dust 17 Common 0 SI Y C None Visible 17 Residence 1 0 SI N Y C N None Visible 17 Residence 2 0 Ml Y U c Y Slight Amount 18 Outside 0 N M Sample looks granular and sandy, not gray like WTC dust 18 Common 0 LI N MS None Visible Leaf track-in visible 18 Residence 1 0 Ml N Y C N None Visible Window view of WTC site 18 Residence 2 0 LI N Y C N None Visible 19 Outside 0 N Moderate Visible in, and sampled from, sidewalk joint with building; sidewalk 19 Common 0 SI N C None Visible looked cleaner.

19 Residence 1 0 LI N Y O N None Visible 19 Residence 2 0 Nl N Y O N No picture 20 Outside 0 N Unk Too distant to see surface dust 20 Common 0 SI N MS None Visible O 20 Residence 1 0 Nl N Y O N None Visible H l"^ 20 Residence 2 0 SI N Y O N No picture 21 Outside 0 N None Visible S 21 Common 0 SI N C None Visible o O 21 Residence 1 0 SI N Y C N None Visible O I 21 Residence 2 0 Nl N Y C N None Visible o

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NYC-WTC_000233063