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EPA Region 2 health effects screening criteria for ambient air

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Draft document outlining health effects screening criteria for ambient air developed by EPA Region 2 in October 2002.

NYC-WTC_000186132–000186137
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NYC 9/11 Public Portal Document

Contaminant Site Worker Resident Sulfur Dioxide 5 ppm .14 ppm"’ Particulates Total 15,000 pg/m’ NA Respirable 5,000 pg/m^ NA

PM„ NA 40 pg/m^ 65 pg/m^ PM,o NA 150 ggZm’<’’’> Semivolatiles Dioxin/Furans (TEQ) NA . 162 ng/m’ PCBs 1,000 pg/m^ .73 pg/tiT 9 pg/m’ <’) PAHs NA 6 pg/m’ '5’ Volatiles Acetone 1,000 ppm 1.5 ppm "IF P Benzaldehyde NA 860 ppm Benzene 1 ppm .02 ppm .21 ppm Benzonitrile NA NA 1,3 Butadiene 1 ppm .01 ppm (’>’5)

Chloromethane 100 ppm .4 ppm 2.6 ppm 1,4 Dioxane 100 ppm .5 ppm Ethanol 1,000 ppm 45 ppm^’®’ Ethylbenzene 100 ppm 2.5 ppm Freon 22 1,000 ppiiT'" 140 ppm Propylene EEL simple asphyxiant Styrene 100 ppm 2.3 ppm ® alpha methylstyrene 100 ppm . 1 ppm

DMI'T-DO NOT QUOTE OR CITE A-4 October 2002

CITY_21MC1OO_O111O9162

NYC-WTC_000186135

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NYC-WTC_000186135Source: NYC Law Department, mirrored locally

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Appendix document outlining health protective screening values and contaminants of concern for WTC site workers and Lower Manhattan residents.

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WTC health criteria appendix, Dec 2001 · page 4

NYC-WTC_000176140

Appendix document outlining health protective screening values and contaminants of concern for WTC site workers and Lower Manhattan residents.

Similarity score 0.954 (not a probability)

machine-extracted · confidence unavailable · Check page ↗

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WTC health criteria appendix, Dec 2001

NYC-WTC_000176140

Appendix document outlining health protective screening values and contaminants of concern for WTC site workers and Lower Manhattan residents.

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