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Note: EPA no longer updates this information, but it may be useful as a reference or resource.


Air Screening Data – Particulate Monitoring

Test Results

EPA, in coordination with Louisiana Department of Environmental Quality, collected air screening samples from multiple locations across the New Orleans metropolitan area on September 11 and 13-19, 2005.

Because samples were not collected with standard monitors, the mix of particles in the screening samples cannot easily be compared to EPA's standards. However, to provide the public with a point of reference, EPA has compared the results to its Air Quality Index (AQI) for inhalable coarse particles, also known as PM 10.

The AQI is an index of daily air quality that focuses on health effects that the public may experience in a few hours or days after breathing the air. The screening samples show particle pollution at levels considered moderate or "code yellow" under the coarse particle AQI on September 13, 14, 18 and 19.

Coarse particle pollution is considered "moderate" when the 24-hour average level is between 55 and 154 micrograms per cubic meter of air. At these levels, unusually sensitive people should consider not engaging in vigorous exercise. For more information, see "Particle Pollution and Your Health," http://airnow.gov/index.cfm?action=particle.cover . From 1999 to 2004, New Orleans averaged three "moderate" PM 10 days a year, based on measurements taken every six days.

These data were collected using a portable, battery-powered monitor that often is used in emergency response situations, because it gives immediate readings. EPA does not use data from these types of monitors either for compliance purposes or for generating routine air quality advisories.

These initial results represent the beginning of extensive sampling efforts and do not represent all air conditions throughout the area. As this is a dynamic situation, general conclusions should not be made regarding air quality based on results from this snapshot of data. For sampling information, go to http://www.epa.gov/katrina/testresults/air.

Measurements for
9/11/05
9/13/05
9/14/05
9/15/05
9/16/05
9/17/05
9/18/05
9/19/05


DataRAM Particulate Matter (PM) Measurements for 9/11/05

Moderate above 55 ug/m3 for a 24-hour period; unhealthy for sensitive groups above 155 ug/m3 for a 24-hour period. (Note: sampling periods for these data were less than 24 hours.)
Location Sample Event Average Mass ug/m 3
Bienville and Royal DR691105(1) 35.7

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DataRAM Particulate Matter (PM) Measurements for 9/13/05

Moderate above 55 ug/m3 for a 24-hour period; unhealthy for sensitive groups above 155 ug/m3 for a 24-hour period. (Note: sampling periods for these data were less than 24 hours.)
Location Sample ID Average Mass ug/m 3
Missouri and Humphrey DREDI5 42.8
Genie and Campagna DREDI6 42.4
Judge Perez and Palmisano DRLV02 51.9
Florida and Jacob DRLV03 37.8
Judge Perez and Murphy Oil Refinery Road DRLV04 141.0
Magistrate and Volpe DRLV05 7.5

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DataRAM Particulate Matter (PM) Measurements for 9/14/05

Moderate above 55 ug/m3 for a 24-hour period; unhealthy for sensitive groups above 155 ug/m3 for a 24-hour period. (Note: sampling periods for these data were less than 24 hours.)
Location Sample Event Average Mass ug/m 3
Missouri and Humphrey edi 001 60.4
Genie and Campagna edi003 35.1
Judge Perez and Palmisano edi005 72.1
Florida and Jacob edi 006 65.6
Judge Perez and Murphy Oil Refinery Road LV-03 46.6
Magistrate and Volpe LV-06 67.0

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DataRAM Particulate Matter (PM) Measurements for 9/15/05

Moderate above 55 ug/m3 for a 24-hour period; unhealthy for sensitive groups above 155 ug/m3 for a 24-hour period. (Note: sampling periods for these data were less than 24 hours.)
Location Sample ID Average Mass ug/m 3
St. Charles and Adams DRLV06 47.3
St. Charles and Calhoun DR03 0.1
St. Charles and Upperline DR01 51.7
St. Charles and Gen Taylor DR05 47.1
St. Charles and Felicity DR06 48.3
St. Charles and Erato DRLV03 27.5
Louisiana Technical College Jefferson Campus DRLV02 25.7

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DataRAM Particulate Matter (PM) Measurements for 9/16/05

Moderate above 55 ug/m3 for a 24-hour period; unhealthy for sensitive groups above 155 ug/m3 for a 24-hour period. (Note: sampling periods for these data were less than 24 hours.)
Location Sample ID Average Mass ug/m 3
    ug/m3
S. Claiborne and S. Carrollton DR01 51.1
S. Claiborne and Audubon DRLV04 34.3
S. Claiborne and Jefferson DR0-6 31.1
S. Claiborne and Napolean DRLV05 5.3
S. Claiborne and Toledano DR05 33.7
S. Claiborne and Martin Luther King DRLV06 39.6
S. Claiborne and Earhart DRLV02 17.7

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DataRAM Particulate Matter (PM) Measurements for 9/17/05

Moderate above 55 ug/m3 for a 24-hour period; unhealthy for sensitive groups above 155 ug/m3 for a 24-hour period. (Note: sampling periods for these data were less than 24 hours.)
Location Sample ID Average Mass ug/m 3
Broad & Tulane DRLV0309172005 23.5
Broad & Bienville DRLV0409172005 33.5
Broad & Dumaine DRLV0509172005 13.8
Broad & Grande Esplanade DRLV0509172005 45.6
Broad & Onzaga DRNJ0608172005 41.8
Broad & Bruxelles DRNJ0109172005 40.1
Broad & A.P. Tureaud DRNJ0509172005 49.9
Base Camp DRLV0209172005 16.7

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DataRAM Particulate Matter (PM) Measurements for 9/18/05

Moderate above 55 ug/m3 for a 24-hour period; unhealthy for sensitive groups above 155 ug/m3 for a 24-hour period. (Note: sampling periods for these data were less than 24 hours.)
Location Sample ID Average Mass ug/m 3
Mustang & Esteban DRNJ06091805 86.9
2040 Esteban DRLV05091805 42.7
7525 Patricia DRNJ01091805 83.8
818 Badger DRLV06091805 14.3
8289 Patricia DRLV03091805 64.9
Patricia & Da La Ronde DRLV04091805 95.5
Liberaux and Sinclair DRLV02091805 44.0
St Jean Baptiste DRLV0209172005 90.2

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DataRAM Particulate Matter (PM) Measurements for 9/19/05

Moderate above 55 ug/m3 for a 24-hour period; unhealthy for sensitive groups above 155 ug/m3 for a 24-hour period. (Note: sampling periods for these data were less than 24 hours.)
Location Sample Event Average Mass ug/m 3
7262 Friscoville DRNJ06 113.1
316 Serpas DRLV04 112.2
305 Chalmette DRNJ01 109.6
195 8th Street DRNJ05 110.9
8838 Livingstone DRLV02 61.0
177 W. Claiborne DRLV03 73.9
2261 Jackson DRLV05 55.3
2303 Fenelon DRLV06 102.9

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