ML19309H606
| ML19309H606 | |
| Person / Time | |
|---|---|
| Site: | LaSalle  |
| Issue date: | 05/06/1980 |
| From: | Peoples D COMMONWEALTH EDISON CO. |
| To: | Ballard R Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 8005130556 | |
| Download: ML19309H606 (2) | |
Text
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Commonwealth Edison Oni First National P'aza. Chicago. flhnces
\\
Address Reply to: Post Off.ce Box 767
__ j Chicago, lihno,s 60690 May 6, 1980 Mr. Ronald L.
Ballard, Chief Environmental Projects Brancn 1 Division of Site Safety and Environmental Analysis U.S.
Nuclear Regulatory Commission nasnington, DC 20555
Subject:
LaSalle County Station Units 1 and 2 Response to NRC Request for Clarification of the LaSalle County Station Ice Monitoring Program NRC Docket Nos. 50-373 and 50-374 Reference (a):
R. L.
Ballard letter to D.
L.
Peoples dated March 11, 1980
Dear Mr. Ballard:
In response to your request in Re ference (a), concerning our proposed fog and ice monitoring program, we have the following comments:
The final specifications that were implemented by our LaSalle County Station personnel have expanded the fog portion of the monitoring program to a year around basis.
Ice monitoring, however, will be limited to the October 1 through March 31 perioos.
We have attached copies of the modified specifications ano an improved data log sheet for your consideration.
Regaroing your request to clarify the plan "with respect to provisions to protect the public during hazardous conditions o f fog and ice", we would like to review tne intent of this monitoring program.
In Section 5.4.1.2 of the Final Environmental Statement, the NRC sta f f's analysis includes the statements "The sta f f will require tnat tne applicant initiate a fog monitoring program for the nighways in tne area during the cooler part of the year to cetermine the frequency and density of fogs tnat could produce highway safety proolems.
If pond-produced fog does create such safety problems or other impacts, the applicant will ce required to take measures to reduce or eliminate tne hazards."
G CHD1 M
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C:mm:nwrith Edison Mr. Ronald L.
Ballaro, Chief May 6, 1980 Page 2 Additionally, it was concluded in the LaSalle County Station Envircnmental Report, Subsection 5.1.4, that instances of fog, inauced by the cooling pond with a visibility of less than a quarter mile, would be limitea to a few hours a month at distances over 200 meters from the edge of the pond.
The purpose of this monitoring program, therefore, is to cetermine what affect the cooling pond has on the nearby roads (fog) and on vegetation (rime ice) in the vicinity o' the station.
The major roads are County Highways 6 and 30 anc State Hignway l'/0, anien are 457, 800 and 914 meters from the pond at their closest points, respectively.
The light duty, sparsely traveled township road to tne north of the pond is within 200 meters of the discharge flume from the station.
Shoula significant impacts be identified by this monitoring program, the data obtained will be used to determine where the problem exists and what remedial actions are appropriate.
If you should have any additional questions, please direct them to this office.
Very truly yours, A d/
D. L. Peoples j
Director of Nuclear Licensing cc:
Mr. Roger Walker, Resident Inspector U.S. Nuclear Regulatory Commission P.O. Box 757 Streator, IL 61364 U.S. Environmental Protection Agency Attn:
EIS Coordinator Federal Activities Branch Region V Of fice 230. South Dearborn Street Chicago, IL 60604 3597A
-. -. -. ~.
Revised:
4-2d-50 I
i LaSalle County Nucicar ?over Station l
Monitoring Pro; ram to Measure the Local Fog and Ice Caused by the Cooline Pond i
i Requirements j
A.
Training Company personnel will be trained to observe and report steam fogging and rice ice conditions near the periphery of the cooling pond under the aus-pices of a Certified Consulting "eteorologis t.
B.
Loci of Observatiens In connection with the training phase above, locations will be estab-lished from and at which observations will be made. These observation j
locations will be chosen to include appropriate sightiegs of the road-ways near the periphery of the cooling pond, nearby residences, and other sensitive locations, if any.
Specific roadways to be observed near the cooling pond are County Highway 6, State Route 170, the gravel f
road north of the cooling pond and County Highway 30.
1 C.
Sightings Benchmarks Appropriate landmarks will be identified within sight of each observation J
location to f acilitate the estimation of the extent of (distance covered by) fogging and time icing,and the density of (visibility impair =ent ' caused by) fogging. The dictances between the landmarks and their associated ob-servation locations will be measured and recorded.
7 D.
Fog From each observation location, visual observations will-be-made' and re-~
corded by trained personnel twice each day, before and after the day shift, except ve^kends and mlica:c, indicating th. pr2; c.ec. iceu isa,
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D.
Fog (continued) and extent of fog and the estimated local visibility (range).
These 1
observat. ions will not be made on days these roads are impassable due to snow or flood.
i l
E.
Ice From each observation location, visual observations will be made and recorded by trained personnel twice each day, before and af ter the day a
3 shift, except weekends and holidays, from October 1 through March 31, r
e indicating the presence, location, extent and thickness of rime ice.
These observations will not be made on days these reads are impassable due to snow or flood.
l F.
Supporting Observations The observation record shall include time, ambient air temperature (dry bulb and dew point) wind direction and speed, electrical load on plant and condensing water temperatures (intake to and discharge from the plant).
4 1
G.
Environmental Impact of Rime Icing i
As soon as possible af ter the end of the observation season, but no later than May 1, the data on the occurrence of ri=e icing will be correlated to determine the locations where environnental impact sur -
vcys will be conducted. Such surveys will include observation of veg-etation by a terrestrial biologist or botanist during the spring grow-ing season.
H.
Reporting and Length of Program-1 The monitoring :nder Requirements D. E and F shall centence as soon as l
practical af ter January 1,1980, so as to obtain as tuch of one year's i
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H.
Reporting and Length of program (continued) pre-cperational data as possible. Observations made during one unit and two unit operation will be accordance with.he schedule expressed in paragraph six of Subsection 6.2.1 of the LSCS E.I.S.
The monitoring data will be su=marized and. submitted to the SRC quarterly.
These data shall be summarized, analyzed, interpreted and compared with the pre-operational monitoring data in the annual reports in accordance with Subsection 5.6.1 of the LSCS E.T.S.
Bases The purpose of this monitoring program is to determine (1) the frequency and density of cooling pond induced fog on local roads, and (2) the ex-tent of time ice formation in the vicinity of the pond. The results of this monitoring program will determine whether there is a need for action to mitigate fog or icing effects.
LA SALL CCC';TY CE::ZPATI::G STATIC::
RECCRD OF FOG OSSERVATICN AM 1.
DATE:
TIME:
PM C3 SERVE 2:
SIGNED DRY SUL3 TE9:
F DE'd POINT TD2:
'JI!D DIFICTIC:::
0 ITIND SPEED:
SEH COND. WATER I:iTAKE TET:
SKY COVER:
(CLEAR, PARTLY CLCUDY, CVERCAST)
PRECIPITATICN:
(RAIN, SN0'4, SLEET, HAIL, ETC.)
VISI3ILITY F2STRICTIO:IS:
(HAZE, FCG, SMCKE, E!C.)
2.
FCG OBSERVATICNS C2SERVATIC:3 PT.
1-2 3
4 5
6 7
3 9
ROAD CCND.
FCG DEISITY
.N I/4
@M (VISIBILITY) g (IN FEET
),[
M
[
S f4 W)
W
/4 RDIE ICE (BUILD UP)
(IN INCHES)
ROAD CoiDITIONS: DRY, WET, ICY, DAMP, SNCW NOTATICNS ARE MADE CNLY FOR ESTIMAID VISIBILITY LESS THAN 1/4 MILE.
3.
MAP d7 OBSERVATICN ARIA (CN P2 VERSE SIDE)
NOTE: ANY ROAD HAZARDS IDECIFID *a~.LI. 3E RECORDED ON THE :RP SY OUTLINING THE A?2A A7?ICTD A :D DESCRISING IN CC1CIE;TS SECTICN 4.
CC1'ME::TS - NOTE A'iY PERTINENT 03SER7ATIC:i
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