NYC-WTC_000187696

NYC 9/11 Public Portal Document

N YSDEC All Resources - i 998 Air Quality Report, PSI Criteria ittp://wwwjjcc.state.n)-.us/we3,site/cai7repon&9Saiuupu9iSar_-j,s;..i;m.’

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Division of Air Resources Bureau of Technical Supi

Criteria For Pollutant Standards Index (PSI) Comparison of PSI Values with Pollutant Concentrations, Descriptor Words, Generalized Health Effects, and Cautionary Statements

POLLUTANT LEVELS PARTICULATES A.MBIENT (PSI) AIR PMIO TSP SO2 CO OZONE NO2 HEALTH INDEX QUA1.1TY (24-HR) (24-HR) (24-HR) (8-HR) (1-HR) (1-HR) EFFECT GENERAL HEALTH VALUE LEVEL Pg/nP Pg/m’ PPM PPM PPM PPM DESCRIPT. EFFECTS CAUTIONARY STATEN Premature death of ill and All persons should rent elderly. Healthy people will indoors, keeping window Significant 1.00 50.0 0.60 2.00 experience adverse symptoms doors closed. All persons 500 600 1000 Harm that affect their normal minimize physical exertir activity. avoid traffic. ---- ------ Hazardous Premature onset of certain Elderly and persons with t diseases in addiiion to diseases should stay indot significant aggravation of 400 Emergency 500 875 0.80 40.0 0.50 1.60 avoid physical exertion. C symptoms and decreased population should avoid o exercise tolerance in healthy activity. persons. Significant aggravation of symptoms and decreased Elderly and persons with e Very exercise tolerance in persons heart or lung disease shou 300 Warning 420 625 0.60 30.0 0.40 1.20 Unhealthful with heart or lung disease, indoors and'reduce phy with widespread symptoms in activity. the healthy population. Mild aggravation of I symptoms in susceptible Persons with exixting he respiratory ailments sh< 200 Alert 350 375 0.30 15.0 0.20 0.60 Unhealthful persons, with irritation reduce physical cxertior symptoms in the healthy outdoor activity. population. 100 NAAQS 150 260 0.14 9.0 0.12 ** Moderate

50 "soyrof *50 •75 *0.03 4.5 0.06 ♦* Good NAAQS

NOTES: NAAQS - Nationai Ambient Air Quality Standard (Short term, 24 hour avg or less) * Primary NAAQS (Annual average) ** No index values reported for concentrations below "a level"

This page was Iasi updated on 02/17/00

1 01'1 9/25/01 2:28 PM

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NYC-WTC_000187696