| Main Title |
Investigation of High Ozone Concentration in the Vicinity of Garrett County, Maryland and Preston County, West Virginia. |
| CORP Author |
Research Triangle Inst., Durham, N.C. Environmental Studies Center. |
| Year Published |
1973 |
| Report Number |
CPA-68-02-0624; RTI-41U-764; R4-73-019; |
| Stock Number |
PB-218 540 |
| Additional Subjects |
( Maryland ;
Air pollution) ;
( West Virginia ;
Air pollution) ;
( Air pollution ;
Ozone) ;
Concentration(Composition) ;
Measurement ;
Oxidizers ;
Gas detectors ;
Atmospheric motion ;
Photochemical reactions ;
Diurnal variations ;
Garrett County(Maryland) ;
Preston County(West Virginia) ;
Air quality data ;
Air pollution detection ;
Air pollution episodes
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB-218 540 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
103p |
| Abstract |
A field measurement program was carried out in August and September 1972 to investigate the source of high ozone concentrations in Garrett County, Maryland and Preston County, West Virginia. Approximately 11 percent of the hourly ozone concentrations measured at the Garrett County, Maryland airport exceeded the 0.08 ppm National Air Quality Standard. In one episode, the Standard was exceeded for 26 consecutive hours. The mean hourly ozone concentration for the study period was 0.057 ppm and the maximum hourly concentration was 0.119 ppm. High ozone concentrations persisted through the night; the nighttime mean was 0.055 ppm. Nitrogen dioxide and nonmethane hydrocarbon concentrations were at or near background levels throughout the study period. It was concluded that local photochemical synthesis could not account for the observed ozone concentrations in the study area. Analysis of meteorological data indicated that the high ozone concentrations were associated with air masses arriving in the study area after passing over urban-industrial regions. (Author) |
| NTIS Title Notes |
Final rept. on Phase 1. |
| PUB Date Free Form |
Jan 73, |
| Category Codes |
13B; 4A; 68A |
| NTIS Prices |
PC A06/MF A01 |
| Document Type |
NT |
| Cataloging Source |
NTIS/MT |
| Control Number |
326559816 |
| Origin |
NTIS |
| Type |
CAT |
