ML20046B035
| ML20046B035 | |
| Person / Time | |
|---|---|
| Site: | Claiborne |
| Issue date: | 04/23/1992 |
| From: | Hillis B SCIENCE APPLICATIONS INTERNATIONAL CORP. (FORMERLY |
| To: | SCIENCE APPLICATIONS INTERNATIONAL CORP. (FORMERLY |
| References | |
| NUDOCS 9308030028 | |
| Download: ML20046B035 (2) | |
Text
_-
b'bb]b 5AIE An Empooyet-Owned Company Contact Report Memo To: File From: Brian Hillis (SAIC)
Project: Louisiana Energy Services EIS
Subject:
Appropriate meteorological site for Homer Date: April 23, 1992 Mr. Ernest Ethridge, Senior Meteorologist at the Shreveport National Weather Service Station, returned a call made by Mr.
Hillis.
It was explained that LES was planning on building a new facility near Homer and since local meteorological data was not available that SAIC wanted to obtain/use the best available sites data.
Mr. Ethridge said he knew exactly where the site was and was l
familiar with the conditions at the site.
Three sites were discussed; Shreveport, Louisiana, El Dorado, Arkansas, and Monroe, Louisiana.
l l
Mr. Ethridge stated that the Shreveport meteorological station is in an open area and is the highest point in a 5 mile area.
This is similar to the location at Homer.
El Dorado's met station is located in a valley.
El Dorado is different because it is in a valley running NW to SE and the valleys would cool more than the open areas at Homer, Shreveport, and Monroe.
Similarly, evening and morning winds cauced by the differential cooling would make the El Dorado site a poor choice.
The lakes and the river by El Dorado could have some minor effect on the meteorology.
Shreveport is expected to have less turbulence than Hemer but not significantly (this would result in minor over prediction of the highest concentrations at Homer).
Weather data shows that rainfall drops off in Louisiana as 'rou go east to west and north to f
a, p!7 930B030028 920423 T'i b
PDR ADDCK 07003070
!M ht<
C PDR f,jf[ [p f
4 f = p.,. l. ~~d genar r An Emptoyewowned Company i south. In any event there is little difference in rainfall or temperature between the three sites. El Dorado would be expected to have lows about 3 to 4 degrees cooler due to being in a bowl but the air temperature on the ridges would be similar to Homer. Thus it would take El Dorado longer to break the surface inversion. Mr. Ethridge cautioned that Shreveport's met station tower was changed in 1988 and Monroe's was changed more recently. So more recent wind data would be more unstable (variable) during light winds and recent wind speeds should average slightly higher than earlier years. The stability information provided in the LES report was read to Mr. Ethridge to see if he understood the reason for the large differences. He said that El Dorado sh Juld break the radiation inversion on a daily basis, although not as early or on as many days as Shreveport, but "he would flunk someone that gave that different an answer". Mr. Ethridge said he would recommend using the Shreveport data as he thought it was a better match than El Dorado and slightly better than Monroe. In addition, 13 apper air data and more complete weather information is ava for Shreveport. _ _ - _ _ - _ _ _.}}