| Main Title |
Lake Tahoe visibility study / |
| Author |
Pitchford, M. L. ;
Allison, D.
|
| Other Authors |
|
| CORP Author |
Environmental Monitoring Systems Lab., Las Vegas, NV. |
| Publisher |
U.S. Environmental Prtection Agency, Environmental Monitoring Systems Laboratory, |
| Year Published |
1983 |
| Report Number |
EPA 600-J-84-289 |
| Stock Number |
PB85-198273 |
| OCLC Number |
84743168 |
| Subjects |
Tahoe, Lake, Watershed (Calif and Nev) ;
Automobiles--Motors--Exhaust gas ;
United States--Lake Tahoe Watershed
|
| Additional Subjects |
Visibility ;
Particles ;
Air pollution ;
Sources ;
Sampling ;
Concentration(Composition) ;
Chemical analysis ;
Fines ;
Residential buildings ;
Wood ;
Combustion products ;
Exhaust emissions ;
Reprints ;
Air quality ;
Air pollution sampling ;
Air pollution detection ;
Lake Tahoe Basin ;
Wood stoves ;
Automobile exhaust
|
| Internet Access |
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| ELBD ARCHIVE |
EPA 600-J-84-289 |
Received from HQ |
AWBERC Library/Cincinnati,OH |
10/04/2023 |
| ERAD |
EPA 600/J-84-289 |
|
Region 9 Library/San Francisco,CA |
04/11/2011 |
| NTIS |
PB85-198273 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
12 unnumbered pages : illustrations |
| Abstract |
Visibility monitoring and airborne particulate sampling in the Lake Tahoe Basin were used to document visual air quality levels and to assess the relative impacts of major contributing emission source categories. Visibility data were obtained by long path contrast and particle scattering techniques. Particles were sampled in two size ranges at three locations and were analyzed for mass concentration and composition of elements greater in atomic weight than Na. Statistical analysis showed fine particle concentration (particle diameter less than 2.5 micrometers) to be related to visibility. A model was developed to apportion all of the fine particle mass to source categories. The results of this effort were then used to determine an optical extinction budget by particle source. This study indicates 70% of the basin-wide visibility impact and 30% of the South Lake Tahoe visibility impact are caused by natural and long range transported emissions. Residential wood smoke emissions are responsible for the majority of the remaining impact; at South Lake Tahoe automotive emissions are also significant. |
| Notes |
"EPA/600/J-84/289." TS and 8192, February 1983. |
