ML050670520
| ML050670520 | |
| Person / Time | |
|---|---|
| Site: | North Anna  |
| Issue date: | 03/08/2005 |
| From: | Dominion Generation |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| Download: ML050670520 (6) | |
Text
ERRATA Re: Proposal for Information Collection - North Anna Power Station Submittal for Agency Review and Comments 316(b) Cooling Water Intake Structures Please print this attachment and follow the enclosed instructions. - Remove page 11 (which is printed two -sided) and replace with page 11 (one-sided) - Remove pages 112/114 (two-sided) and replace with pages 112, 13, _&-114.(one-sided)_ .. _._..._.__
Please contact Joyce Livingstone at (804) 273-2985 or Bill Bolin of Dominion Electric Environmental Services with your questions at (804) 271-5304.
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It Orange Co. N LAKE ANNA PAM UNKEY CREEK 612 I
NORTH Rt5 Spotsylvanlo Co.
ANNA RIVER Washington, DC Louisa Co.
S >Lake Anna wF47Richmond, Va.
CONTRARY CREEK DAM 2 KM Waste Heat Treatment 4Focillty .
2 MILES I NORTH ANNA
- RIVER FIGlURE 2.1.1. HAP OF THE LAf E AtIA RESERVOImRAtril 1/ASTE HEAT TRE ATI4ENT FACt LITY.
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112 almost twice as high as the average annual impingement rate (7.5 x 103 fish) from 1979-1983. The estimated total number of bluegill creeled during 1984 was 9.0 x 103 (Vepco unpublished data). This value is almost twice as high as the estimated total number of bluegill impinged during 1983 (5.8 x 103) (Table 6.1.3). The comparison of data from these 2 years probably is valid as the standing crop of bluegill in Lake Anna remained relatively stable during that period (Vepco unpublished data).
White Perch
- Coverotenone-data-indicate-an-increasing population of white perch-in Lake Anna ranging from 2.73 kg/ha in 1979 to 24.2 kg/ha in 1982 and 21.0 kg/ha in 1983 with an annual average during the 5-plus-year study period of 12.7 kg/ha (Vepco 1983 and 1984). The estimated average annual impingement rate for white perch during that period was 122.2 kg. At this rate, 0.1% of the lake area (5.8 of 5,600 ha) would be required annually to produce the weight of impinged white perch, or an average of 0.1% of the total white perch standing
- crop was impinged annually. The number of white perch per hectare, readily available only for the years 1981-1983 averaged 520/ha from rotenone data
- (Vepco 1983 and 1984). The estimated average annual impingement number for these 3 years was 3.9 x 10 (Table 6.1.3). Thus 0.13% of the lake area (7.5 of 5,600 ha) would be required to produce the number of white perch impinged annually.,
The average fecundity of white perch has been estimated at 4.0 x 104 with a maximum reported at 3.2 x 105 (Hardy 1978). As the estimated average annual number of white perch impinged was 2.7 x 103 during the 5-plus-year study (max. 5,168) (Table 6.1.3), one average size adult female theoretically could produce more progeny in 1-year than were impinged in a year.
U- 113 I The striped bass was the only other species of any significance impinged during this study. Almost exclusively the impinged striped bass were young-of-the-year with yearly impingement estimates ranging from 151 (1978) to 5.2 x 10 (1982) with a total of 1.0 x 10 (Table 6.1.1). During the duration I of this study (1978-1983) the Virginia Commission of Game and Inland Fisheries stocked 1.5 x 106 striped bass fry in Lake Anna (personal communication C.
Sledd) of which an estimated 0.7% were impinged.
_ Relative fish species composition in a lake can be greatly affected by
__ ntroductions of new fish species. Since 1972 Lake Anna has been subject to _ _
numerous stockings of nine different'species of fish (Table 7.1.2). All of
- these species, except Florida largemouth bass, are now found in the lake, 3 although blueback herring is rare. Neither striped bass nor walleye have established breeding populations, hence the yearly stockings.
As these stockings were comprized of both predator and prey species, in large numbers, it is not surprising that fluctuations in species composition have occurred and are still continuing as these fishes compete for space in their respective niches.
Whether one compares impingement during the 5-plus-year study period with estimated standing crop, average fecundity or creel harvest, there apparently has been no noticeable adverse impact on the fish stocks of Lake Anna.
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'I Table 7.1.1 - Impact assessment summary for selected species, comparing average annual impingement rates with average annual standing crop, average fecundity and creel estimates when available, at North Anna Power Station 1978-1983.
Averaae Average Average Fecundity Estimated Estimated Average Average Creel Annual f Annual Annual Impingement Annual Standing Annual Impingement of one Number
- Impinged Harvest Impingement Standing Species Weight (kg) 1978-1983 j Crop (Weight-kg) 1979-1983 Number 1981-1983 Crop (Number) 1981-1983 Number 1979-1983 (
r Average Size Female Fish 1983 1984 0.3 0.4%
2,200 677,600 34,417 9,408,000 116.769 378,990 Gizzard Shad 3.81 3.1:
22,256 728,000 28,437 37 .796 11,018 15,992 Black Crappie 1,397 . 37,184 1.4;4 0.6%
518 36,400 7,582 1,288,000 28,634 23,000 Yellow Perch 0.02S 0.02X 365,680 8,362 43,456,000 7,438 18,300 5,754 9.056 Bluegill 80 5.8S 0.13%
122 71,120 3,898 2,912,000 2,719 40,000 White perch Striped bass Total number impinged - 10,024 total number stocked - 1,508,098. 0.7S 4-'
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Dominion Generation 5000 Dominion Boulevard Glen Allen, VA 23060 9, Imermorv
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- f U.S. Nuclear Regulatory Commission Document Control Desk Washington, DC 20555 RE: North Anna Units 1 and 2 Docket Nos. 50-338150-339 License Nos. NPF4/NPF-7 itiiifi'itiuii'IIiii'tilt iilI