ML20079N347
| ML20079N347 | |
| Person / Time | |
|---|---|
| Site: | Monticello  |
| Issue date: | 12/31/1976 |
| From: | Heberling G, Weinhold J NORTHERN STATES POWER CO. |
| To: | |
| References | |
| RTR-NUREG-1437 AR, NUDOCS 9111110170 | |
| Download: ML20079N347 (18) | |
Text
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MONIICELLO NUCLEAR GEN PLANT ATTAcitMENT 2 MONTICELLO NUCLEAR GENERATING PLANT E!NIRONMENTAL MONITORING PROGRAM 1976 ANNUAL REPORT A
SUMMARY
OF T E 1976 MONTICELLO FISH IMPINGEMENT STUDY (2.3.3)
Y
's.;k Prepared for Notthern States Power Company Minneapolis, Minnesota by G.
D. Ileberling and J. W. Weinhold Environmental and Govstrnmental Activities Department Northern States Power Company 9111110170 761231 PDR NUREG 2.3.3-1 r.,
1437 C PDR
/
4 2.3.3 A
SUMMARY
OF T!!E 1976 MONTICELID PISit IMPINGEMENT STUDY 2.3.3.1 Introduction wp In 1976, the fourth year of a fish impingement study was con-ducted at the Monticello Nuclear Generating Plant.
Data were grouped by species and are compared with impi.nge,nont estimates from 1973, 1974, and 1975.
2.3.3.2 Methods and Materials The methods of sample collection and analysis were the same as described in the 19's4 study (IIcberling and Weinhold 1975) from January through March.
In April 1976, NUS Corporation was engaged to conduct the impingement study.
From April through December, 24-hour collections of impinged fish were obtained by diverting rinsed material from the traveling screens directly into the trash basket using continuous or scheduled rinsing depending upon river debris load.
Collec-tions were made on 52 dates of a possible 340 days that the plant was operating.
2.3.3.3 Result _a_
Total 1976 impingement estimates for each species are present-ed in Table 2.3.3-1.
The total annual impingement estimate was 18,886 fish.
Estimates were obtained for each species by ccmputing the mean number of fish impinged in a 24-hour per-iod and multiplying these averages by the number of days the plant was operating.
2.3.3-3
s s
Age 1+ fish comprised 27 percent (5,035 fish) of the 1976 im-pingement catch.
Excluding carp, the cyprinidae family con-l' ss tributed 1,504 fish to this " mature" group.
Ictiluridae also
" ~"
constituted a large portion of this category with 1,227 fish.
Black bullhead was the most abundant species in the mature fish impingement category (1,011 fish).
Black crappie was the dominant gamefish species impinged with a total annual I
catch of 872 mature fish, Log perch was also a common com-ponent of the catch contributing 843 fish.
Young-of-the Year (YOY) fish constituted 73 percent of the 1976 annual impingement estimate.
The catostomidae family had a total of 9,407 YoY fish impinged, which was 68 percent of the total YOY estimate.
Shorthead redhorse and silver red-horse were very abundant in the YoY impin3ement catch, con-tributing 5,625 and 3,322 fish, respectively, carp were also common, with 2,149 YOY fish being impinged.
As in the mature l
fish group, black crappie was the dominant YOY gamefich im-pinged, contributing 1,423 fish.
Figure 2.3.3-1 shows that two seasonal impingement peaks oc-curred, one in midsummer and another hhkurly winter.
The midsunner peak was created by the impingement of YOY carp, shorthead redhorse, and silver redhorse (Figure 2.3.3-2 through 2.3.3-4).
This peak typically occurs in late summer when YOY fish attain an impingeable size.
Prior to this time they pass through the intake screens and are entrained.
Shorthead redhorse and silver redhorse were also the major componentu in the early winter spike.
Black crappie nnd black bullhc.5 impingement occurred primarily in thu spr.ing (Figure 2.3.3-5 and 2.3.3-6).
Black crappie impingement teached a maximum of 2. 3. 3 -4
b 59 fish per day in late April, while black bullhead reached a peak of 33 fish per day in early May.
i 2.3.3.4 Discussion In total, 32 species were impinged in 1976.
Thirteen new species were captured that were not found in the previous three years.
Largemouth bans was the only species that was not found in 1976 that had occurred in earlier studies.
Most of the new spectus were members of cyprinidae.
Silver red-horse, which were conspicuously absent fran previous studica, occurred in large numbers as young-of-the-year in 1976.
Total annual impingement estimates for 1973 through 1976 ranged from 16,463 fish in-1974 to 24,157 fish in 1975.
The 1973, 1974, and 1976 estimates were extremely close with 18,030, 16,463, and 18,886 fish, respectively.
The high esti-mate in 1975 was attributable to exceptionally high impinge-ment of mature black bullheads : 1975 was also the only year where mature fish outnumbered young-of-the-year.
This also was a consequence of the high impingement of mature black bullhead.
In 1976, 95 percent of the impinged fish.were less than 160 mm.
This statistic indicates that lack of sustained swimming ability in small fish is a major impingement factor.
. Concurrently, the paucity of large _ fish during the four study years indicates that Monticello Plant intake velocities are not a major impingement factor ;or healthy, mature, riverine
- species, Except for black crappie and a pulse of bluegill in 1973, im-pingemnnt of gamefish was very small in the four study years.
2.3.3-5 l
4 Mature northern pike, smallmouth bass, and walleye had total impingement catimates for the four-year period of 38, 100, and 52 fish, respectively.
This demonstrates that Monticello plant impingement affords little competition to anglers for their desired gamefish.
..m:-
Unlike previous years, 1976 impingement rates revealed a very poor relationship with river discharge values (Figure 2.3.3-7).
This poor correlstion is probably the result of exceptionally low 1976 river discharge.
Black crappie and Black bullhead did, however, demonstrate their highest impingement rates in April and May when river discharge was at its maximum.
1976 impingement rates more closely followed the perce rge of river discharge consumed by the plant (Figure 2.3.a-8),
peak percentage consumption periods cccurred in August and December, which corresponds with maximum impingement rates.
In the fall, when the plant began recirculating its cooling water, impingement dropped sharply along with the declining percentage of river discharge consumed.
Although the percen-tage of river discharge consumed by the plant was substantially greater in 1976 than the three previous years, total annual impingement remained fcirly constant.
It therefore appears that impingement rates are more dependent upon YOY class strengths and seasonal movements (like those suspected by mature black bullhead and black crappie) than plant intake volumes.
M No mortality estimates were compvted in 1976, because fish were collected in the trash basket from April through December.
Mortality resulting from this collection method negates the possibility of computing deaths that are due to impingement 2.3.3-6
alone.
Survival rates determined in 1973, 1974, and 1975 revealed that, while the fish return sluice canal was operable, a very small percentage of fish deaths resulted.
Data from these study years also indicated that fish survival rates were greatly enhanced by a continuous screen-rinsing mode during periods of high fish impingement and warm water temperatures.
A species list of both scientific and common names is pre-sented b) Table 2.3.3-2.
l i
i Elh 2.3.3-7
i t
?- *
)
2.3.3.5 Summary i
1.
Fish impingement samples were collected on 52 dates of a possible 340 days that the plant was operating.
2.
Thirty-two species of fish were impinged.
3.
Total 1976 fish impingement estimate was 18,886 fish.
i 1
4.
Soasonal impingement rates correlated well with the 7
percentage of river discharge consumed by the plant.
5.
Seventy-three percent of the impinged fish were YOY.
6.
catostomidae was the dominant family impinged, comprising 150 percent of the total estimate.
7.
Black crappie was the most abundant gamefish impinged with an estbmate of 2,295 fish.
Except for smallmouth bass, which had an impingement estimate of 190 fish, the-remaining gamefish were rare components of the catch.
8.
No survival estimates were computed.
2.3.3-8
. _ _ _ _ _ _.. _. ~. _. _.
2.3.3.6 Literature cited 11erberling, G. D. and J. W. Weinhold.1975.
Fish Impingement.
Monticello Nuclear Generating Plant, NSP Environmental Monitoring Program 1974 Annual Report. pp. 309-327.
4 4
2.3.3-9
k i
l' Table 2.3.3-1, 1973 through 1976 Annual Species Impingement
{
Esthmates Separated into Young-of-the-Year (YoY) and Ages 1 + (m).
I 1973 1974 1975 1976 Speciest YoY m
YoY m
YoY m
YoY m,,,
Cisco 7
Northern pike 31 7
j Carp 184 2872 118 2149 22
- Longnose dace 508 422 543
-i Golden shiner 13 Fathead minnow 739 42 288 Bluntnose minnow-26 Hornyhead chub 200 52 Spotfin shiner 451 Common shiner 33 Sand shiner 20 Bigmouth shiner 13 Spottail shiner 136 169 350 65 Silver radhorse 3322
. Shorthead redhorse 196 37 477 330 5625 57 White sucker 19 19 739 473 460 24 Yellow bu11 head' 71 66 Brown bullhead 13 Black bullhead 16" 379 5467 747 24163 454 1011 Tadpole madtom 74 62 194 203 Trout perch 98 92 111
-Burbot 37 139 136 23 19 197 Smallmouth bass-750 61 740 215 26 177 13 Largemouth bass' 713 185 199 Black crappie 1413 86 6268 1623 1363 1423 872 White crappie.
26 Rock bass 98 200 44 104
_ 26 26 Bluegill'
~13498 59 Orangespotted sunfish 7
Yellow perch 77 151 33 6
Walleye
'37 8
26 7
Log perch 37 570 3 04 843 Johnny ~ darter
-20 Total-17029 1001 8486 7977 6689 27468 13851 5035 2.3.3-11
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l Tablo 2.3.3-2 SPECIES LIST
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Scientific namni Common name Corenconus prtodi Cisco Espg lucius Northern piko Cypr ines cario Carp Rhinichthys cataractan Longnoso dace Notemiconu, :rvsoleucas Golden shinor Pinophales promelas Fathead minnow Pinephalos notatus Bluntnoso minnow Nocomus biquttata Hornyhood chub
/
"$6tropis spilopterus Spotfin shinor Notropis cornutus common shiner Notropis staminous Sand shinor Notropis dorsalis Bigmouth shiner Notropis hudsonius Sppttail shinor Moxostoma anisurum Silver redhorso Moxostoma macrolepid um Shorthead redhorse Catostomus commersoni White sucker Ictalurus natalis Yellow bullhond Ictalurus nebulosus Brown bullhond Ictalurus melas Black bullhead Naturus avrinun Tadpole madtom Percopsis omiscomavcus Trout perch Lota lota Burbot Micropterus dolomieui Smallmouth bass Micropterus salmoidss Largemouth bass Pomoxis nigromaculatus Black crappio Pomoxis annularis White crappio Ambloplites runestris Rock bass Lepomis macrochirus Bluegill y
Lepomia humilis Orangespotted sunfish perca flavescens Yellow perch Stizostedion vitraum Walleyo Porcina caprodes Log perch Etheostoma niorum Johnny darter x
.5%
2.3.3-12 l
Figure 2.3.3-1.
1976 Estimated Daily Total Fish Impingernent F
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400-300-o
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Figure 2.3.3-2.
1976 Estimated Daily Carp Impingement 150-x m
H 100-i tu N
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50-0 M
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Figure 2.3.3-3.
1976 Estimated Daily Shorthead Redhorse Impingement 150 -
f 215 J
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100 -
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n Figure 2.3.3-6.
1976 Estimated Daily Black BL111 head Impingement 50-
,1 a
s,.
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Figure 2.3.3-8.
1976 Weekly Average Percentage of River Discharge Consumed by the Monticello' Plant 60 -
50-lc u)
HN 40-g W
m 30-6 o
20-10-0 I
3 I
8 I
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