NYC-WTC_000186193
Draft environmental data report for the World Trade Center site prepared by IT Corporation for the EPA in November 2001.
19 shared non-person entities · similarity 0.965
machine-extracted · confidence unavailable · Check page ↗Document / 137 pages
NYC-WTC_000232959
Label derived from the City's folder field. The City does not supply document titles.NYC-WTC_000232959–000233095Page image
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NYC 9/11 Public Portal Document
Results of Mineral Analyses in Dust and Air
The following tabic 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 Method or Number Isample Type Ibocation Quartz Cristobalite Tridymite Calcite Portlandite Gypsum Mica Halite
Summary of Comparison Areas Above 59th Street
Air (^g/m^) PM100 ND ND ASN ND ND ND-3 J ND ND
Air (^g/m^) PM10 ND ND ASN ND ND ND-3 J ND ND
Air (^g/m^) PM4 ND ND ASN ND ND ND-5 J ND ND
Air (pg/m^) PM2.5 ND ND ASN ND ND ND-3 J ND ND Settled surface dust (%) Common Area ND-1 J ND ND ND-0.4 J ND-0.05 J ND-3 J ND ND Settled surface dust (%) Outdoor NS NS NS NS NS NS NS NS Settled surface dust (%) 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
Results for Individual Buildings Sampled in Lower Manhattan (Buildings 1-30)
1 Air (ng/m^) PM100 ND ND ASN ND ND 6 J ND ND
1 Air (ng/m^) PM10 ND ND ASN ND ND 14 J ND ND
1 Air (ug/m’) PM4 ND ND ASN 6 J 84 J 12 J ND ND
1 Air (pg/m^) PM2.5 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 1 (%) Outdoor 27 J ND ND 15 J 6 J 14 J ND ND Settled surface dust 1 (%) Residence 1 19 J ND ND 18 J 2 J 30 J 0.3 J ND Settled surface dust 1 (%) Residence 2 31 J ND ND 21 J 6 J 4 J 0.05 J ND
2 Air (ug/m’) PM100 ND ND ASN ND ND ND ND ND
2 Air (^g/m^) PM10 ND ND ASN ND ND ND ND ND
2 Air (^g/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 1 J ND ND ND 2 J 14 J ND ND Settled surface dust 2 (%) Outdoor 21 J ND ND 19 J 3 J 27 J ND <0.03 J Settled surface dust 2 (%) Residence 1 3J ND ND 2 J 0.9 J 6 J ND ND Settled surface dust 2 (%) Residence 2 23 J ND ND 15 J 9 J ND ND
3 Air (^g/m^) PM100 6J 15 J ASN 5 J 24 J 5 J 13 J ND
3 Air (^g/m^) PM10 5J ND ASN 5 J 25 J 6 J ND ND
3 Air (ng/m^) PM4 6J ND ASN 6 J 26 J 7 J ND ND
3 Air (pg/m’) PM2.5 NS NS NS NS NS NS NS NS
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CITY_21MC100_011171543
NYC-WTC_000233074
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NYC-WTC_000233074Source: NYC Law Department, mirrored locally
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