Residential sampling protocol, World Trade Center, Oct 2001

NYC 9/11 Public Portal Document

pvtc residential plan octlS.wpd

****DRAFT****

>40-65 >155-255 Unhealthy for Sensitive People with respiratory or Groups heart disease, the elderly’ and children, should limit prolonged exertion. >65-150 >255-355 Unhealthy People with respiratory or heart disease, the elderly and Sensitive groups may children, should avoid experience more serious health prolonged exertion; everyone effects. else should limit prolonged exertion. >150-250 >355-425 Very Unhealthy People with respiratory or heart disease, the elderly and children, should avoid any Everyone may experience outdoor activity; everyone else more serious health effects. should avoid prolonged exertion. >250 >425 Hazardous Everyone should avoid any outdoor exertion; people with respiratory or heart disease, The entire population is more the elderly and children, should likely to be affected. remain indoors. * Developed from EPA’s Air Quality Index; A Guide to Air Quality and Your Health, EPA-454/R-00-005, June 2000 and EPA Guideline for Reporting of Daily Air Quality - Air Quality Index (AQI), EPA-454/R-99-010, July 1999 (at: http://www.epa.govZaimow/publications.html ). ** These comparison levels are guidelines to make public health decisions. Detected concentrations of PM above specific guideline levels does not mean that adverse health effects will occur.

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