Chain of Custody Form Instructions for WTC Building Sampling

2 2

i X o co o o o TJ c CT o' § O) Summary of Residential Sampling Survey Form Results and Review of Photographs (Abbreviations and terms us^ in the table are defined on the last page in this table.) ■D O a- iU Number of Event Broken Dust Visible Dust Visible Residence Cleaning Aggressive Level of Dust O o Number Location Windows Initially Currently Occupied Method Sampling In Photo Photo Comments o c 14 Residence 2 0 Ml Y U None Y None Visible Pile of trash swept into center of room; no WTC dust 3 CD 3 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 VisibiB 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 20 Residence 1 0 Nl N Y O N None Visible 20 Residence 2 0 SI N Y O N No picture 21 Outside 0 N None Visible 21 Common 0 SI N C None Visible 2i Residence 1 0 SI N Y C N None Visible 21 Residence 2 0 Nl N Y C N NoneVisible

95