ML20198D054
| ML20198D054 | |
| Person / Time | |
|---|---|
| Site: | LaSalle  |
| Issue date: | 05/20/1986 |
| From: | Allen C COMMONWEALTH EDISON CO. |
| To: | Bernero R Office of Nuclear Reactor Regulation |
| References | |
| 1696K, NUDOCS 8605230116 | |
| Download: ML20198D054 (4) | |
Text
.
[Ch Commonwealth Edison
) One First Nttionit Pl ara, Chiergo, libnois k
O ] Addr:ss Rzpty to. Post Offica Box 767 (j Chicago, lilinois 60690 May 20, 1986 Mr. R. M. Bernero, Director Division cf BWR Licensing U.S. Nuclear Regulatory Commission Washington, D.C.
20555
Subject:
LaSalle County Station Units 1 and 2 NPDES Permit NRC Docket Nos. 50-373 and 50-374
Reference:
LaSalle County Station Tech Specs Appendix B Section 3.2.
Dear Mr. Bernero:
In accordance with the reference above, the attached document is being submitted to your office to notify you of the current status of the NPDES Permit for LaSalle County Station.
The attc.:hment is a request for revision of the permit for LaSalle County Station and related correspondence between Commonwealth Edison and the Illinois Environmental Protection Agency since that time.
Should you have any questions concerning the permit status, please contact this office.
Very truly yours, I
9 C. M. Allen Nuclear Licensing Administrator 1m
Attachment:
Request for NPDES Permit Modification cc: Region III Inspector - LSCS Dr. A. Bournia - NRR M. C. Parker - State of Ill.
0l 0
1696K B605230116 860520 I
PDR ADOCK O 3
g P
4 r} Commonwealth Edison 72 West Adams Street Chicago, llLnois
\\
Address Reply to. Post Office Box 767 v
N Chicago, Ilknois 60690 0767 May 8, 1986 CERTIFIED MAIL Mr. Thomas G. McSwiggin Division of Water Pollution Control Illinois Environmental Protection Agenc'.
2200 Churchill Road Springfield, Illinois 62706
Subject:
LaSalle County Station i
NPDES Permit No. ILOO48151 I
4
Dear Mr. McSwiggin:
Comunonwealth Edison requests that the NPDES permit for LaSalle
{
county Station be modified to delete the total iron monitoring requirement and limitation on cooling pond blowdown (outfall 001), and alternatively l
impose iron limitations on any of the individual process wastestreams discharging to the pond or blowdown line.
1 Our request is necessary due to widely fluctuating iron levels present in the Illinois River and cooling pond which occur from natural conditions. This situation has resulted in occasional noncompliances of the iron limitation since LaSalle Station's NPDES permit was reissued in 1984.
It is our belief that these noncompliances were caused by factors beyond the Station's control.
~
We believe that revising the iron 1 imitation to account for background iron levels is impractical due to the problem of accounting for travel time through the cooling pond. Therefore, we believe that a possible solution is to place iron monitoring requirements and limitations on any of the individual process wastestreams which discharge into the cooling pond or blowdowa line. Based on limited sampling which we recently performed i
(attached), and our experiences at other Company facilities with cooling ponds, we believe that the radweste treatment system (Outfall 001e) would be the logical choice for an iron limitation. All of the other station wastestreams typically contain low levels of iron, well below the 2.0/4.0 ppe iron limitation.
We also request that the permit be modified by deleting the flow monitoring requirement for auxiliary reactor equipment cooling water (outfall 001f) or, alternatively, revising it from " daily continuous" to
" monthly total-estimated flow". Since this outfall consists entirely of intake screen backwash water discharged intermittently at 10-15 gym, and since we have submitted to the Agency about 1-1/2 years of flow monitoring data which accurately characterizes this discharge, we believe it serves no i
useful purpose to continue performing detailed flow monitoring of this i
outfall.
2-i i
Moreover, revising the flow monitoring requirement as we propose will result in a substantial manpower savings to the Station.
Please call Mr. Jeff Smith (312/294-4435) if you have any questions regarding our modification requests.
Sincerely yours, w---
Thomas E. Hemminger Director of water Quality 9434E JPS:TEH:pp Attachment l
bec:
G. J. Diederich w/att.
P. Nottingham w/att.
J. Shields w/att.
~~~
Dir. Nuclear Licensing w/at.
File: 02-PER-H4 1
4 i
l
\\
4 i
i
.i ATTACHMENT 1 i
LaSalle County Station Special Iron Sampling Date of Sample Westestream Sample Type Total Iron (ppm)
Cooling Pond Makeup 2-28-86 Comp.
0.46 (from Illinois River) 3-04-86 Comp.
0.58 3-11-86 Comp.
2.21 3-18-86 Comp.
3.85 3-25-86 Comp.
1.10 Demineralizer Regen. Wastes 8-03-84 Comp.
0.33 (Weste Neutralization Tank) 8-13-84 Comp.
0.59 3-03-86 Comp.
0.72 Wastewater Treatment Plant 2-13-86 Grab 0.06 1
2-25-86 Comp.
0.14 3-04-86 Comp.
0.29 3-19-86 Comp.
0.15 i
4-02-86 Comp.
0.30 I
Radwaste Treatment Plant
- 10-08-84 Comp.
0.14 1
10-15-84 Comp.
0.09 10-22-84 Comp.
0.43 10-29-84 Comp.
0.15 i
- Most Recent Data Available 9434E JPS:pp
)
l 4
-w-----,..---,
,m.-
n y- - - -
3-
.,m
,%_y.
we
-ewg.
->.w-
.4r-e-....
--e,9.w,
_