ML19326C905
| ML19326C905 | |
| Person / Time | |
|---|---|
| Site: | Arkansas Nuclear  |
| Issue date: | 07/01/1976 |
| From: | Cavanaugh W ARKANSAS POWER & LIGHT CO. |
| To: | Ziemann D Office of Nuclear Reactor Regulation |
| References | |
| 6627, NUDOCS 8004290535 | |
| Download: ML19326C905 (54) | |
Text
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- FILE NUMIER NRC DISTRIBUTION roR PART EO DOCKET MA1 ERIAL g g FHOM: ARKANSAS POWER & I;IGHT CO DATE OF DOCUMENT 50: i ~
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C' M e ENCLOSU RE DE1CR PTION DIEL CHANGES IN IICIhGEMENT LEVELS IN III'R TRANS T3 FOLIDWING. . . . . . . . COMPLIANCE WITH EINIRONMENTAL TECH SPEC. .. ACKNOWLEDGED ' THIS DOCUMENT CONTAINS P00R QUAUTY PAGES DONOT REMOVE . PLANT NAME: h Q.bg,g 3 -$p d_., I Ii 50 P,a L l P3 FOR ACTION /INFORMATION ENVTRO 9 % Mk SAFETY ., _ ASSIGNED ADr _ ASSIGNED AD:
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(U_[J u LJ I D JUL2 1970 " 9 Director of Nuclear Reactor Regulation ui ugp* ATTN: Mr. Dennis L. Ziemann, Chief c; ,,,, ,'OTm Operating Reactor Branch #2 f U. S. Nuclear Regulatory Commission g Washington, D. C. 20555 to
Subject:
Arkansas Power 6 Light Company Arkansas Nuclear One-Unit I Docket No. 50-313 License No. DPR-51 Diel Changes in Impingement Levels Gentlemen: In compliance with Environmental Technical Specification 6.3 we hereby submit our interpretive report on the subject study. Based on the report's conclusions, further investigation in this direction is unwar-ranted. Therefore, we do not plan to p rsue the matter further. V y truly you r 8- i William anaugh II Assistant Director Power Production WC:ay 1 66L l 1.x AAv ~u. ,~vesro A owneo husueenmiooLesou .L Ties sysrem
I a , a t , INTRODUCTION A.. environmental concern of major utilities utilizing once through cooling ; fish impingement on the intake screens. Arkansas Nuclear One
~
- Unit One, which became operatienal during the latter part of 1974, experienced a high rate of fish impingement during the subsequent fall and winter months. The impinged species were almost all Threadfin and Gizzard Shad. Of these the vast majority were Threadfin. During the fall and winter months the sample weight per 24-h'our period varied from 30 pounds to over 27,000 pounds.
In view of such large quantities of fish being impinged Arkansas Power 6 Light Company intensified its search to define causal relation-ships in this observed phenomenon. Consultation with the Nuclear Regulatory Commission resulted in a decision to perform a diel study. The objective
.of this study was to ascertain if fluctuations in impingement level s cor-4 elate with time of day and if so whether altering pl ant operational status at certain times of day would affect impingement levels accordingly.
1 l
DESCO.IPTION OF ARKANSAS NUCLEAR ONE, UNIT 1-Arkansas Nuclear One, Unit 1 is located in Pope County, Arkansas, 2 mi (3.2 km) sautheast of the city of London on a peninsula formed by Dardanelle Reservoir. The site encompasses approximately 1164 acres (471.4 hectare). Unit 1 is a pressurized water reactor (PNR) with a capacity of 836 Mw. Unit 1, which is designed for once-through cooling, began c6mmercial-operation in December 1974. Cooling water is taken in through a 0.75-mi (1.2-km)-long intake canal to eight forebays. At the confluence of the intake canal and the reservoir, the approach velocity of the intake water is < 0.3 ft/sec (0.09 m/sec). Water velocity increases to 3.0 ft/sec (0.9 m/sec) at one point within the canal due to reduced canal dept h and width where bedrock was not removed. Velocities then reduce to approximately 1.5 ft/sec (0.46 m/sec) along the remainder of the canal up to the intake forebays. Each of the 8 forebays is protected from trash, fish, and other fouling materials by means of a 10-ft (3.1-m)-wide vertical traveling screen constructed of 3/8-in. (0."-cm) wire mesh. There are no fixed screens in front of the traveling screens. The rate of speed of the traveling screens is fixed; however, the pressure. on the wash system can be adjusted. The traveling screens are automatically cleaned by screen wash pumps which dis-charge into high-velocity spray nozzles, washing away debris as the screens travel past the nozzles. Collected trash is sluiced through a trough into one of two trash grinders located in front of screens 4 and 5; the ground , L i m l 2 u _
- I material, plus water, is then discharged in front of screen 2 where it then passes through.the screen and into the Unit-1 condensers.
Unit l's four circulating water pumps are designed with a total { capacity of 762,960 gal./ min. : Cooling . water passes through Unit-1 condensers and is returned to Dardanelle Reservoir via an effluent canal and 80-acr (32.4 hectare) discharge bay. O j i 1 3
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CilARACTERIZATION OF DARDANELLE RESERVOIR Dardanelle Reservoir is part of the McClellan-Kerr Arkansas River
. navigation system which extends from the confluence of the Arkansas and Mississippi Rivers to Catoosa, Oklahoma, on the Verdigris River, a dis-tance of 500 miles. The reservoir surface coverage varies from 34,300 to 36,600 surface acres, and the length of the shoreline is 315 miles 2
at a pool elevation of 338 feet. It drains a 153,666-mi area. The reservoir's maximum volume since being filled was 502,000 acre-feet on June 5, 1974 at a pool elevation of 338.45 feet above mean sea level; minimum volume since being filled to the bottom of the power pool was 415,000 acre-feet on October 13, 1969 at a pool elevation of 335.8 feet. Over the thirty-four year period extending from 1923 to 1957, the Arkansas River at Dardanelle Reservoir produced an average daily dis-charge-of 34,260 feet3 /sec. or 24,820,000 acre-feet / year. During that 3 period, the maximum daily discharge was 683,000 feet /sec. on May 13-14, 3 1943 and the minimum daily discharge was 400 feet /sec. in December,.1970. Major tributaries contributing to Dardanelle Reservoir include Six Mile Creek, Ibrschead Creek, Spadra Creek, Cane Creek, Big Shoal Creek, and Big Piney Creek as well as Delaware Creek and the Illinois Bayou. Dardanelle Dam (Lock and Dam 10) is 259 miles upstream from the mouth of the Arkansas River and is the first of four dams with storage for hydro-power. Construction of this dam was initiated in 1957 and commercial gen-eration began in-1965. J 4
The minimum and maximum pool elevations behind Dardanelle Dam are 336 feet. and 338 feet, with a normal power generation storage capacity of two feet. Power generation is. based on mean daily inflow equaling mean daily outflow within the -336 to 338 feet limits. The four hydro-electric generating units at Dardanelle Dam produce a total power out-put of 124,000 kw (124 mw). Dardanelle Reservoir water temperatures, dissolved-oxygen levels, and other physiochemical parameters exhibit seasohal patterns typical . of a southern (temperate) storage reservoir. Water temperatures ran3e from near-freezing in winter to approximately 90 0F (32 C) 0 in summer. Dissolved oxygen levels follow a seasonal pattern inversely related to water temperatures. The reservoir currently possesses a relatively diverse warm-water fish community (53 species comprising 18 families) and supports a small commercial fishery as well as a growing sport fishery. STUDY DESIGN The diel study was originally planned to begin on October 1, 1975 and continue until April 1,1976,- but due to a delay in receiving the - technical specification change and procedure development, a delay in , implementation was requested and granted (letter from Mr. B. J. Youngblood to Mr. William Cavanaugh III, dated October 15, 1975). The revised study was scheduled for Novemb'cr' 1,1975 to May 1,1970. The study required subdividing a' regular 24-hour impingement sample . into three eight-hour samples. The following data were collected for each sample: The date and time of the sample, the species, the number or 4 5 s 5 .c . . _
(in mm) for estimated number impinged for each specie, the maximum length dl i ht each specie, the modal length (in mm) for each specie, the mo a we g (in grams) for each specie and the nunber of pumps operating duril
. sample collection. (See tables 1-30) .
The plant The program continued as planned through March, 1976. during went off line during the latter part of March and remained down These two missing sampics should the last month of the study period. be-statistically have no effect on the outcome of the study primarily ig cause impingement had returned to the anticipated low level of late spr n and summer. RESULTS Total sample weights ranged from a low of 0.6 pounds and 23 indivi ii to occurring on November 4, 1975 in the 8:00 a.m. to 4:00 p.m. subdiv s on 28, a high of 1923.5 pounds and 84896 individuals which occurred January Num'erically, Threadfin dominated 1976 in the midnight to 8:00 a.m. sample. both sampics, accounting for 65 percent and 99.9 percent of the sample respectively. A two way analysis of variance (see appendix I) shows no statistical The results of the correlation of fish impingement with time of day. h statistical analyses performed are given in tables thirty-one throug, thirty-six, and discussed bele v. It was felt that the most significant test that could be performed This test would indicate on the data was a two-way analysis of variancv.
/ h date any significant differences relative to the time of day and or t e of collection.
6
.r. . The test was performed using both the weight and the number of fish obtai ;e-d from'each sample. There were ten observations for each of the three time-of-day readings. In each results significant dif-ferences were shown between dates. Yet, variances relative to time of de: were not statistically significant. The F-ratios for the variance between days were 19.5 for weight and 16.6 for number, significant at the 0.95 and 0.90 confidence level respecitively. The F-ratios for the variance between dici samples was 0.95 for weight and 1.03 for number which is not significant at the 0.75 confidence level. The above test was also run using only two of the three readings for c:ch day. Again, the. F-ratios were significant for the variance between days but not within days. l t 7
e, < . CONCLUSIONS The diel study si.ows no statistically significant fluctuations in im-Pi ngement levels correlatable to time of day. This conclusion is consistent'with the most probable explanation of the impingement problem at Arkansas Nuclear One. The explanation is as follows: Threadfin Shad exhibit a strong schooling tendency. They become stressed by cold water temperatures and passively drift with the water currents and become
-impinged on the inr.ake screens independent of time of day.
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AR NSAS POWER & LIGHT COMPANY .
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...lNCLUSIVE TIME __ . INLET W4TER80A._ .41R CURTAIN .
. _ _ _ _ . . . . . . . . . . ' , f OF saMPLEt R hrs NUMBER Of".. CIRCl]LAIJNG . 2 HOUR _ TOTAL ,
TEMPERATURE 69 F' STATUS OFF PL tp*PS IN OPERATIOMt 2 snMPLE COUNT . .. 8..H.QUR_10TAL *
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.SDFCIES NAME- SDECIES 4 r*R SWECIES a PR M A A I**U M004L' ~ ~ "
LENGTHtMedl e + WEIGHT (GR) m 9 TOTAL wrlGHTtL %) TOTAL COUNT LENGTHtWM) ~[ CHANNEL CaTFISM q.01 1. 60 30 TO 60 1 1004 0 TO 3 1 1005
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a THREADFIN SHAD 1.31 98. 114 90 TC 120 11 441 0 TO . _ _5. 14 569 __ t
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i F;'#SHrATER nRIP4 n.02 1. 104 90 TC 120 l' loot S TO 10 1 ' loot t
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_0 HOUR TOTAL *. ISAMPLE.IIEE5131EB-75lii.'M.'..'TO'.4P.M. L INCLUSIVE.. TIME .. . I NLEI .W AT ERBO A . AIR CURTAIN..hUMBER OF.8. HOUR CIRCULAT.ING. _TDTAL 143 SAMPLE WEIGHT: ..2.1 LRS.._ c STATUS: OFF PUMPS IN OPERATION: 4 SAMPLE' COUNTS.
- OF S"MPLE: 9 HRS TEMPERATURE: 59 F :
ISPECIES 9 HR MAXIMUM MODAL . MODAL e 4 -( SPECIES NEEE. ._. SPEdINb 4'HR . LENGTH (MMI LENGTH (HM) s 1 WEIGHT (GR) TOTAL WEIGH.TILHS) TOTAL COUNT
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55FCIES NAME >. PUuPS IN OPF.RATIONt 2 ...e HQun TcTAL
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. TEMPERATURE: 58 F STATUS OFF PUMPS IN OPERATION: 4 SAMPLE COUNT: 675~ . . . . SAMPLE WEIGHT 3 8.8 LRS i . .
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( SAMDLE..TAKENL 12M2-75.4P.M... _. INCLUSIVE _ II.u.E . , 70.12P.M. OF SAmptE: A Hps INLET _WATERBOX. . I TFuPERATURE 46 F AIR CURTAIN STATUS 3 0FF hUMBER OF CIRCULAIING PUMPS IN OPERATION: 4 e NOUR. TOTAL . SAMPLE COUNTt .8.MOUR_ TOTAL.* f SPECIES C uE 3019
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SPECIES 4 PR 44.1 (8s TOTAL WEIGHTtL65) MAAluuM TOTAL count M00AL (
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- ANO SCREEN MONITORING
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m 23
.(
DIEL STUDY ( SA.MP'LE_7 A'(ENL 05-25-76 9 A'. ** . T0!'49.N. .[. (
., _ INCLUSIVE.TI C ... . INLET WATERBOA..... -. AIR CURTAIN . .
0F SAMPL E
- A HRS TEMPERATipts 39 F NUMBER OF CIRCULATING . e NOUR TCIAL . .
8 Houe TOTAL * .... . _- STATUS! OFF Pua*PS IN OPERATION: 4 SAMPLE COUNT 18956 SAMPLE WEIGHTS 464.0 L85
.. -(.
STECIES N4*E SPECIES 9 NR SPECIES 8 HR MAKIMUM MOCAL MODAL TOTAL WEIGHT (L89)
~
TOTAL COUNT LENGTH (wM1 LENGTH (MMI s 1 WEIGHT M41 a 5 (' THREADFIN SHA0 446 41 18916. 166' 90 TO '120 106 964 S TO 10 63 571 GI?2ARD SHAD- . 25.
. 4.97 - 249 210 TO 240 6 751 95 TO 100 2 251 i
SKIPJACK HFRR INr. 6.46 3. 434 420 TO '450 1 1005 1015 10 1020 1 1001 dHI E C#45' PIE 0.22
~~ '
- 3. 147 120TC$150 1 100% 30'70 35 1 1004
( MISSISSIPPI SILVERS!nE 0 04 6. 94 90 TO 120 2 1005 0 TO S 2 1001 ( BLUF" CAIFI5h 0 12 ' 3. ~547 12b TO. 150 1 1001 15 TO ~20 1 1001
-(
- TOTAL SA *LF wT. TNCLUDEt S.3 LBS OF DEtlRIS ACCUMULATION.
( ( (
'eth,s .
(
'4 4-U 'dh- 4 4. . -e'>
% . -- m. ..es.k.r- h.e.
- ..- . . . . . l Y
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. _ _ . h e.6* m'.' 6 h8". . 646h t:
_.- g
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= *
,y pf, q - $.%...w.yt s,.z. r&g
.:.- . .~ ~' *, ., ,
- . . . . . . . . -_.a..
- N 5 _bdD C
o e ARKr.NSI,5 P0eE3 L LIGHT COMPANY aho SCREEN MONITORING O hble 14 ,
'(
~ ~- - .
( DIEL STUDY ._
~^
.(
8 HOUR TOTAL _*.. .. 4P.M. $TO l'2P.M. SAMPLE..T AMEN: 01-20-76 NUMBER OF CIRCULATING e M0uR TOTAL. 617.0 LRS AIR CURTAIN 23257 SAMPLE WEIGHT f INCLUSIVE TIME. . INLET. W ATERBOL. PUMPS IN OPERATIONE 4 SAMPLE COUNT
.. OF S'MPLE: 4 HRS TE*PERATURE: 39 F . STATUSB 0FF SPECIES 8 MR WAXIMOM MODAL
*0DAL WEIGHTIGR) e 4 (
SPECIES 8 HR LENGT H i*tdl e 1
. SPECIES DAME TOTAL COUNT LENGTHtW4) -
TOTAL MEIGHTtLBS) 49 479 155 90 TC 120 9e 931 5 TO 10 .( GR2.R1 23100. THOEsoFIN eM4D
~~
5 TC 10 6. 461 208 90 To l20 a 621 1.34 53.
' GIZZARD SHAD ~
415 10 T0 15 4 ISS 99 90. 445 120 TO EO 9 SKIPJACK ErppINr. P<. 90
~
1 1001 5 TO 10 1 1009
^ ~
4 76 60 TO
~ GREEN SUNE15H. n.06 . . .
90 1 1005 0 TO 5 1 1001 ( 4 68 60 TO CHANNEL CATFISH 0.02 1001. 115 TO 120 1 1001 ( 4 179 150 TO 180 1 RLUEGILL SUNEISH 1. 0 7 ._ -
~
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.. INCLUSIVE.11ME_.. ._ _ . INLET. W ATERBOA. .._. AIR. CURTAIN. NUMBER OF C1RCULATING. 6 Hour T0TAL . . . . _ 8 HOUR. TOTAL.'.... .
OF SAMPt.Et A hrs TEMPER ATt1RE 8 43 F STATUS: OFF PUMPS IN CPERATION: 4 SAMPLE COUNTt 40187 SAMPLE tfEIGHTS 977.0 LBS (. S5ECIES N4EE SPECIES. 8 HR SPECIES 8 FR WAX 1puM NOD AL . MODAL total. wEIGHTtL8S) TOTAL COUNT LENGTHfMMI LENGTH (MMI e t WEIGHTIGR)
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. I NCt,US I VF . T I ME_ . . _ . INLET W ATERBQ4 . AIR CURTAIN
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Or SAMPLE! 9 HRS TEMPERATURE: 41 F NUMBER OF CIRCULATING . e H_00R TOTAL 8' HOUR TOTAL i STATUS: OFF PUMPS IN OPERATION 4 SAMPLE COUNT! 8%896 SAMPLE WEIGHT 1928.0 LPS f
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INLET WATER 80/.. .. _ AIR _ CURTAIN OF SAMPL E S A HR$ . 1FMPERATURE 44 F STATUS: OFF NUMBER OF CIRCULATING
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. 8 MOUR TOTAL . _
PUMPS IN OPERATIONS 4 SAMPLE COUNT!8.N00R 1168610 tat _?... SAMPLE WEIGHT SPECIE'S NA N. 303.0 LBS SPECIES' O M'R . SPECIES 8 HR TOTAL MEIGHTtL M) max! MUM f TOTAL count McCALL ' THREADFIN SHAQ LENGTH (MM) # ~ko0AL'
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INLET.WATEPBOX. . AIR CURTAIN NUMBER OF. CIRCULATING e NOUR.TQIAL 8 HOUR IOTAL
- OF Sr.mpi.Es a HRS TEMPERATUDE 44 F STATUS: OFF PUMPS IN OPERATIONt'4 SAMPLE COUNT 8328 SAMPLE WEIGHT: 211.1 LBS i
SPECIES NAU. SPEh1ES d HR - SPECIES e HR MAXIMUM. M00AL , MODAL TOTAL wEIGHTtL85) ( TOTAL COUNT LENGTHtwM) LENGTHtMM) * % WEIGHTIGR) # 9 THREAprIN SHAD 193.97 8289. 159 90 Td 120 '96 5 TO 89% 10 63 589 G177ARD Sri 40 0.77 17. 228 60 TO 90 7 58% 0 TO 5 7 501 (
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( i MISSISSIPPE SILVERSIDE 0.15 8. .114 90 TO' 120 6 1001 0 TO 5 3 50% ( FT.ESHw*TER DRIAM 0 04 1. 113 90 TO 120 1 1001 10 TO 15 1 1001 ( 9 TuiAL. SAMPLE.WT. INCLUDES 15.7 LBS OF DEBRIS ACCUMULATION. (
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S*MPLE TAMEN: I62-p.-7h_3A.u.. T o ' 6p . ** . .. .. .. . _ .. . f
.. INCLUS IVF TIME..._. INLET _ WATER 90x , AIR CVRTAIN. NU.MBER OF CIRCULAT.ING .e , HOUR TOTAL 8_H._0VR .TCT AL _* . . . .
OF SI."PI.E A HRS TEMPERATURE 50 F STATUS 8 0FF PUMPS IN OPERATION: 4 SAMPLE COUNT: 242
. ._. SAMPLE WEIGHT _.6.5 LBS
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SPECI E NAuE, SPECIES H HO SPECIES P HR max! MUM N00AL _
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70.TAL wEIGHTfL99) TOTAL COUNT LENGTH (PH) LENGTHtMMI e 1 WEIGHTtGR) . # 1 (
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GIZZARD SiAD 0 59 20. 213 60 TO 90 11 55% 0 TO 5- 9 459 t
'STDIPE0 HASS 0 03 2. 98 90 TO . 120 2 _.1005 5 10 10 2 1001
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'CHA7&4FL CATFISH ^ 0.32 2. 2A9 60 TO '90 1 50% 0 TO 5 1 501
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ALHF CAT 8'IS" 0 05 5. 106 90 TC 120 4 80% 0 io 5 '3 ' 601
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THRECDFIN THAn 5.38 206. 153 90 TO .120 23 .855 . 5 TO . 10 16. . . _ . .595 (
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DIEL STUDY
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_..I Of 8 4. M . . .
. INCLUSIVE . T IME___ _INLEJ W ATERSO.X_ .
0F SAMolEs.9 H95 TEMPERATHRE: 59 F .STATUSt AIR CURTalN OFF .huMBER OF CIRCULAT]NG _ e MOUR TOTAL . 8 HOU.R. TOTAL.? f PUMPS It4 OPERAT10N 4 SaMPt.E COUNT : 382 SAMRLE WEIGHis 8.9 LRS [SPkCIES NWE SOEC{ES d ',_HQ SPECIES A HR ( MAXIuuM MOCat '
. TOT AL wElGHTJLAsl. TOTAL COUNT LENGTH (MM)
M00AL
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. . . . .CHESTNtsT Lau'coEY O '- 5 2. 295 270 TO ~300 2 1005 60 TO 65 'l 507
'4!SSISSIPAI . S ILVEo.5[nE ' O .' 0 'l' 2.
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94 60.TO . 90 1 50% 0 TO' 5 '2 1004 (
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'dEUE CATf'iH l ~ ~'.55l 82. 120 '55 TO ~1 '2 0
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17 651 0 TO 5' '6 1 629 GREEN StEFISH $' O.01 (
- 1. 48 30 TO _60
.- 1 100% .0 TO 5 1 1001 '
ARKANSAS RIVER SHINER ( 0 09 7. 101 94 TO *120 5 715 5 TO 10 5 719
.4HITF CRAPPIE 0.l1
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- 2. 130 120 TO .150 2 100s 15 TO 21 1 507 HLACK RulLwrAD CATFISH . _ . .0. .12 .._. ._ (
1. 180 150 TO . . .180 1 1005 50 TO 55 1 1001 (
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- 1. 58 _._.30 T0 _60 1 .100%
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.. .ERESHWATER DRUM . . . . . . . _ . _ ..:_ .. (
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. SAMPLE,JAmFN: 0 3 7d- 8A.w. TO 4P.M, . . , . , .
..INC1.USlyE T!"E. INLET 4TE000K OF samples a H95 AIR CURTAIN .
( TWPERATnRE: St F STATUSt OFF NUMRt:.R OF CIRCUL.A TING . . e .HO,UR TOTAL ,'8 NOUR TOTAllt,, __ , PUMPS IN OPERATION: 4 SAMPLE COUNT: All S AMPLE WEIGHT 8 ' ,, ,,
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- MISSISSIPPI SILvrJSI'E 0 01 1. . . . . ...
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- STATust OFF PUMPS IN OPEhATION- 4 SAWLE COUNil' till 5AWLL wtlGHit 2I.2 LRS SPECIES NAME
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SPECIES 8 FR._ i MAMLMuM . . . _ . . . . . _ . . . . _ TOTAL WEIGHT (Les) M0QAL TOTAL COUNT . . _ _ POU AL . . .
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. LENGTH (MMl_ W _ 1 THRFADFIN SHAD 6 38 276. 117 90 TO' 120
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TWO-WAY ANALYSIS OF VARIANCE (ONE OBS. PER CELL) (WEIGHT) TABLE 31 DATE OF SAMPLE 3 T]ME OF DAY NOVEMBER DECEMBER JANUARY 4 18 2 36 FEBRUARY 20 27 MARCH 10 24 10 BAM - 4PM .6 17 2.1 41 9 57.6 458.7 970.2 182.6 6.5 22.2 11.5 kPM - 12MN 15 8.5 44.1 81.1 610 3 1094.2 295.0 13 7 12MN - 8AM 49 0 33.8 19 8.8 43.1 45.6 499 9 1093.5 195.4 8.9 36.7 21.2 RESULTS OF ANALYSIS SSA = 5.12 (2) 803 = 4.72 (4) SSE = 4.84 (3) A = 2.56 (2) B = 5.25 (3) SST = 5 26 (4) k-1 = 2.00 n-1 = 9 00 (k-1)(n-1)=18.00 nk-1 =29 00 C = 2.69 (2) FA = 95 - F-ratio for time of day. Not significant at the .95 confidence level FB = 19 53 - F-rttio for different dates. Significant at the .95 confidence level (Percentage points of the F-distribution given in Appendix II) (H) = 10n
T'.?o-WAY ANALYSIS OF VARIANCE (oNE OBS. PER CELL)_ (NUMBER OF FISH): TABLE 32 DATE OF SAMPLE TDE OF DAY NOVEMBER DECEMBER JANUARY FEBRUARY MARCH 4 18 2 16 20 27 10 24 10 17 8AM - 4PM 26 143 2066 2310 18956. 4o187 7831 242 411 277 4PM - 12MN 94 496 -3019 3409 23257 47217 n686 536 1362 lo72 12MN - 8AM 111 675 3412 1916 20358 84896 8328 382 653 ~ 6n. RESULTS OF ANALYSIS SSA = 1.21 (6) B= 8.41 (2) n-1 = 9 00 nk-1 = 29 00 A = 6.05 (5) SSB = 8.73 (16) SST = 9.% (16) (k-1)(n-1) = 13 00 k-1 = 2.00 C = 5.87 (5) SSE = 1.06 FA = 1.03 - F-ratio for time of day. Not significant at the .90 confidence level. FB =16.62 - F-rativ for different dates. Significant at the .90 confidence level. (Percentage points of the F-Distribution given in Appendix II) (N) = lo"
DTo-WAY MIALYSIS OF VARIMICE (oIZ oBS. PER CELL) (WEIGHT) TABLE 33 DATE OF SAMPLE IIG7EIGER DECDBER JAITUARY FEBRUARY MARCH TIIE CF DAY 4 18 2 16 20 27 lo 24 lo 17 8AM - 4B! .6 2.1 41 9 57.6. 458.7 970.2 182.6 6.5 22.2 11 5 hat - 12It! 15 8.5 44.1. 81.1 610 3 1 295.o' 13.7 49 0 33.8 RESULTS OF ANALYSIS SS A = 1.89 (2) B= 8.41 (2) n-1 = 9 00 nk-1 = 19 00 A == 1.89 (2) SS B= 7 57 (3) SST =1.24(4) (k-1)(n-1) = 9 00 k-1 = 1.00 C= 5.21 (2) SS = 4.69 (3) E FA = 1 36 FB = 1.61 (Percentage points of the F-Distribution given in Appendix II) (N) = lo"
~
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~ TWo-WAY ANALYSIS OF VARIAUCE (OUE oBS. PER CELL) (WEIGHT) TABLE 34 DATE OF SAMPLE FEBRUARY MARCH DECEMBER JANUARY 17 NOVEMBER 20 27 10 24 10' ,_, 4 18 2- 16 TDtE OF DAY 182.6 v.5* 22.2 11.5 41 9 57.6 458.7 970.2 8AM -' 4PM .6 2.1-8.9 36.7 21.2 45.6' 499 9 1903 5 195.4-l2ter - 8AM 19 8.8 43.1 __ RESULTS OF ANALYSIS SSg = 5.n (2) > B =. 4.05'(3) n-1 = 9 00 SS 7= 4.o9 (4) A = 5.n (2) SS 3= 3.65 (4) c = 4.28 (2) (k-1)(n-1) = 9 00 k-1 = 1.00 nk-1 = 19 00 SSE = 3.85 (3) FA = 1.19 FB = 9 47 j (Percentage points of the F-Distribution given in Appendix II) n (N) = lo so.
3- - - - - -
'r.70-:TAY ANALYSIS OF VARIANCE (ONE OBS. PER CELL) (WEIGHT) ,
-TABLE 35 DATE OF SAMPLE NOVDSFR DECDGER JANUARY 4 FEBRUARY PARCH
- TIME 0F DAY '18' 2 16 20 27 10 24 10 17 kPM .121st-1 51 8.5 44.1 -81.1 610. 1094.2- .295.0 13.7 49.0 33.8 12tei ' 8AM 19 8.8 43.1 45.6 499 9 1903 5, 195.4. 8.9 36.7- 21.2 RESULTS OF ANALYSIS SSA = 1.42.(2) B= 4.44 (3) n-1 = 9 00 nk-1 = 19 00
~
A'= 1.42 (2) SS B= 4.00 (4) SST = 4.34 (4) (k-1) (n-1) = 9 00 k-1 = 1.00 C= 3.61 (2) SSE = 3 25 (3) FA =- 39 ' FB = 12 30}}