Chain of Custody Form Instructions for WTC Building Sampling

NYC 9/11 Public Portal Document

Results of Mineral Analyses in Dust and Air The following table shows the results of analyses of the minerals in settled dust and air samples for 30 residential buildings in lower Manhattan (1-30) and 4 comparison buildings (31-34) above 59th Street. For each building, the table shows the highest estimated air concentration of mineral for each size fraction. In addition, estimated levels of each mineral in the settled surface dust are shown for each sampled location within a building.

Building Hsthod or I Trich Number Sample TVpe lUKatlon Qui Cristo Calcl Portlandite 38U Halite

Summary of Comparison Anas Aboyo 59th Stmot

Air (pg/m^) PM 100 ND ND ASN ND ND ND-3J ND ND

Air (pg/m*) PM10 ND NO ASN ND NO ND-3 J NO ND

Air{pg/m’) PM4 NO ND ASN ND ND ND-5J NO ND

Air {pg/m^ PM2.5 ND ND ASN ND ND NO-3 J ND ND Settled surface dust (%) Common Area ND-1 J ND ND ND-0.4 J ND-O.OS J ND-3 J ND ND Settled surtece dust (%)________ Outdoor NS NS NS NS NS NS NS NS Settled surface dust oy Residence 1&2 ND-2 J ND ND ND-0.9 J ND-0.08 J 2-4 J ND-0.08 J ND-0.4 J

RasuKs for Indiylduai Buildings Sampled In Lower Manhattan (Buildings 1-30)

1 Air PM100 NO ND ASN ND ND 8J NO ND

1 Air(pg/m^ PM10 ND NO ASN ND NO 14 J ND ND

1 Air (pg/m^ PM4 NO NO ASN 8J 84 J 12 J ND ND

1 Air (pg/m’) PM2.S NS NS NS NS NS NS NS NS Settled surface dust 1 ________ Common area NS NS NS NS NS NS NS NS Settled surface dust {%? Outdoor 27 J ND NO 1SJ 8J 14 J ND ND Settled surface dust 1 i%)_________ Residence 1 19 J ND ND IB J 2J 30 J 0.3 J ND Settled surface dust 1 W Residence 2 31 J ND ND 21 J 6J 4J 0.05 J ND

2 Afr{}jgAn^ PM100 ND NO ASN NO NO NO ND ND

2 Air (pg/m^ PM1Q NO ND ASN ND ND ND ND ND

2 Air (pg/m^) PM4 ND ND ASN ND ND 7J ND ND

2 Air {pg/m’) PM2.5 NS NS NS NS NS NS NS NS Settled surface dust 2 {%)_____________ Common area 1J ND ND NO 2J 14 J ND ND Settled surface dust 2 (%)________ Outdoor 21 J NO ND 19 J 3J 27 J ND <0.03 J Settled surface dust 2 (%}___________ Residence 1 3J ND ND 2J 0.9 J 6J ND ND Settled surface dust 2 (%) Residence 2 23 J ND ND 15 J 44 9J ND NO

3 Air (pg/m^ PM100 64 154 ASN 54 21J 54 134 NO

3 Air (pg/m^) PM10 54 ND ASN 54 25 4 64 ND ND

3 Air (pg/m^) PM4 64 ND ASN 64 26 4 74 ND ND

3 Air (pg/m^) PM2.S NS NS NS NS NS NS NS NS

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