ML20010H670

TMI Aquatic Study Monthly Rept for Jul 1981

ML20010H670
Person / Time
Site:	Crane
Issue date:	09/02/1981
From:	Nardacci G ICHTHYOLOGICAL ASSOCIATES, INC.
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NUDOCS 8109290058
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THREE MILE: ISLAND AQUATIC STUDY' P^

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'N, MONTHLY REPORT FOR-' JULY 1981'

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c.n-4 by Ichthyological' Associates, Inc.

P.O. Box _223, Etters, PA 17319-

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' George A.~ Nardacci, Proj r.at. Leader -

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=a For Metropolitan Edis e Company 4] y w

Ic'hthyological Associates, Inc.

Edward C. Raney, Ph.D., Presideut 301 Forest Drive Ithaca, New York 14850 t

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e TABLE OF CONTENTS

In t r od u c t i o n.....................................'..................

1 1.

' Compliance with Environmental Technical Specifications; G. Nardacci........................................................

2 Macroinvertebrates,:R. Evans, J. Evans, W. Botts...................

2

.Ichthyoplankton; B. Lathrop, R.

Evans......~......,................

2

-Trepnet; 11.':Malick.................................................

3 Seine; R. Malick...................................................

4

- Impingement - o f F is h ; B. S nyd e r.......... '...........................

5 Elec tro fishing ; ' H. Hager ty.........................................

6

-Movements of Fishes; H. Hagerty....................................

6 I

C ree l. S u rveys ; R. R ito ta..........................................

7 Ambient Wat er - Quality ; G. Nard acci................................

7

' Population Estimates of Fishes ; H. Hagerty.........................

8-

' Thetual Plume Mapping; G. Nardacci.................................

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TABLE OF TABLES.

" Table Page il

. Sampling ' conducted 'in compliance with the Generation s

" Procedures' Manual in July 1981.................................

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2l Fishes taken byJtrapnet onl13-15 July 1981 near d4 INS..........

10

-3 IF'ishes'taken by trapnet on 27-29 July 1981 near TMINS..........

11 4

Fishes. taken by seine on 13 July 1981 near TMINS...............

12 5.

_ Fishes taken by seine on 17 June 1981 near TMINS...............

13

.6 Numbors of Tishes impinged at the Unit 1 Intake during a 24-h_ impingement survey on.13-14 July 1981....................

14 7,

Surmary of' lengths, weights, breed"ing' condition, and

. numbers of fishes. impinged at the Unit 1 Intata on 13-14 July 1981................................................

14 8,

Fumbers lof fishes.... Unit 1... 29-30 July 1981.............

15 9

Sumcary..... Unit 1...

29-30 July 1981.......................

15

-10

-Numbers of fishes.... Unit 2... 13-14 July 1981.............

16 11 S ummary.... Unit '2...

13 -14 July 19 81.......................

16

.12 l Numbers of fishes..... Unit 2...

29-30 July 1981.............

17 13 S ummary.... Unit 2...

2 9-3 0 July 19 81.......................

18 14 Numbers of fishes captured by AC electrofisher near TMINS in July.1981.,.................................................

19 15 Creel survey data from the GR for each survey day in July 1981.................................J...................

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16 Creel survey' data from the West Dam for each survey day in July 1981...................................'...................

22 17'

-CreeF survey data from the East Dam for each survey day in l July 1981......................................................

23 e

18 Creel survey data from the' YHGS for each' survey day in July 1981......................................................

24 195 Thermal plume temperature data,(C) taken at 0.5 m intervals surface (S) to bottom at 5 m, 20 m, and 40 m offshore, above

- and below the TMINS. Discharge, 21 July 1981....................

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INTRODUCTION

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-The; ecology'of York Haven' Pond'near the Three Mile Island Nuclear.

Station (TMINS) has~ been under investigation since February 1974.

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LStudiesiinitiated in April.1974' include analysis of ambient wat'er quality;:ichthyoplankton (far-field), ichthyoplankton entrainment, E"

s macroinvertebrates, ' fish Lpopulation ' dynamics, impingement of fishes,

.- creel survey,;and thermal plume mapping.

--This report discussen the progress L of investigations. conducted in k

-July 1981.-.

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COMPLIANCE WITH' ENVIRONMENTAL TECHNICAL SPECIFICATIONS (ETS)

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To detensine compliance with the nonradiological Objective:

r-(aquatic) environmental monitoring programs specified_in sections

- 3.1.1.a. (4), 3.1.2.a., 4.2, and 4.6.1 of the ETS and to insure that said programs are perfor..c' as detailed in the Generation ~ Procedures E

Manual'.

Progress: ' Compliance with all. programs specified in the ETS and l detailed -in thel Procedures Document was achieved in July (Table 1).

The' fish' population estimate program initiated on 30 June continued

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throughout July.

'A program by program summary of the progress for July follows.

4

-MACROINVERTEBRATES Objective: :To describe the diversity and distributicu of the

- benthic macroinvertebrates occurring at the-five benthos sampling stations.near TMINS.

Progress: Replicate (4) benthos samples were taken on 6 and 20

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. July (Table 1).

Enumeration and determination of dry weights of the

. macroinvertebrates:have been completed through 20 July; identification of' specimens has-been completed through 6 July.

ICHTHYOPLANKTON.

Objectives:

(1) To determine - the species composition, abundance, and distribution of _ichthyoplankton in York Haven Pond; and (2) To investigate ichthyoplankton entrained at TMINS Unit 1 and 2 Intakes.

Far-FI' eld.

Progress: _ Day / night samples were taken on 7, 14, 22, and 27 July

'(Table 1).1 A total of=7,087 larvae and young was taken.

Night collectiont yielded 5,294 specimens (75% of the total catch).

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Identification and initialitabulation for both day and night samples

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' Earticomplete -through 7 sJuly. :l Data rcoding of June results -is in progress.

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T Progress:' Ichthyoplankton. surveys were conducted.at Units 1 and 2 on;7-8 and 22-23? July'(Table 1).-

At Unit 1, nine ichthyoplanktors-4

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(6 " surface, '3 oblique) were taken on.7-8 July.' The 22-23 July s' ample

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N lyielded1[622' specimens:(9961suiface, 626 oblique);

[At! Unit 2, zeight ichthyoplank' tors (4-surface, 4 oblique) were

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. taken 'on :7-8 July.. The>22-23/ July _'co11ection yielded 120 specimens tr y

-(69-surface, 51 oblique).

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.TRAPNETl p'

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Objectives: '(1) To determine the distribution and relative abundance

.of fishes in the Three-Mile Island area vulnerable to trapnet; (2) To P

provide specimens for _ movements studies; (3) To monitor the occurrence of diseased ' fishes; (4) To provide specimens-for radiation analysis; and (5) -

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To determine reproductive status for fishes throughout the year.

Samples.were'taken on 13-15 and 27-29 July (Table 1).

A Progress:

p-F c total of 689 fish of.16 species was taken on 1.3-15 July -(Table 2). Most

fish ;(462) ~and greatest -biomass (14.03 kg) occurred at Station 9B2; most

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L species _(11) were taken ~ at 11A2 and.9B2. ; The pumpkinseed was the most

, numerous species at all-stati)ns and comprised 56.27. of the total catch.

7, The white crappie -(19.97.) and bluegill (10.27.).were also common. One L

5previously tagged rock bass was recaptured. One juvenile channel catfish Lwas found dead in the trapnet at Station 9B2. One pumpkinseed and oae

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i bluegill were= parasitized by anchor worcs. One white crapp*e was missing

~ itsileft eye. J One_ brown bullhead,1 channel utfish, and 2 rock bass s

Twere= sacrificed for radiation analysis.- Ripe pumpkinsetd were conaon; lealesioutnmberedfemalesby.over'7:1. One female' golden shiner and.three

male bluegill were ripe, i

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w c A' tot 6 of 208ffish'of.141 species ~was taken on 27-29. July (Table 3).

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noec fish ;(115),Jmost s'pecies

(10), and greatest biomass. (26.65 kg) occurred

..The white-crappie (34.6% of the total catch),- pumpkinseed

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=at Station 9B2.

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(21.6%)J and black. crappie (16.8%): were most numerous. Two brown bullhead

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' juvenile: channel: catfish.was found. dead.in.the trapnet at 11A2 and two at re -

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---9B2'. 7Four channel: catfish = exhibited caudal fin necrosis and one pumpkinseed anal'fia necrosis..LAnchor worms. parasitized 1 white crappie, 1 bluegill, ahd!6 pumpkinseed. Tone channel catfish was sacrificed-for radiation.

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- analysis.Y Ripe male: pumpkinseed outnumbered -females by '19:1.

Two male

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anditwo[femalebluegillwerealsoripe.

.One~ dead white crappie.was found at.the Pennsylvania Fish Commission

/bbat 1aunch areaLalong the northwest shore of the study area.

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SEINE Objectives: [(1) To ' determine. the species composition of fish J upstream and downstream from the TMINS Discharge vulnerable to seine; 4..

-(2)'.To detemine the relative condition. factor for important species; Jand J(3) To determine the reproductive status for fishes throughout the year.

7L Progress: Collections-we e made at the 10 stations-on 13 and 28 July

);

?(Table 1). - A total of 1,877. fish of 21 species was enen on 13 July i(Table 4)..EMost fish.(446) were taken at Station 1A2, most species (12) 2

-cat'.1A2 and 16A1, and greatest. biomass - (295.6 g) at 9B3.

The spottail shiner'and spotfin. shiner were most abundant and comprised 57.5% and I23.57. of the' total catch, respectively. Fifteen male spotfin shiner were

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' tuberculate. - Anchor voms parasitized 10 spottail ' shiner,10 spotfin

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fshiner,-.2l pumpkinseed, Land 1 banded killifish. ' Three tessellated darter and onelspottail shiner were' parasitized by leeches. Protozoan cysts were 7,

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observedfon four bluntnose minnow. _ Slight black spot infestations w:rs observed on 87 spotfin shiner,1 common shiner,'1 fa11 fish, and I white

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sucker. Seven comely shiner and one spotfin shiner had lower jaw ideformities.

Collections -taken on 28 July are ' currently being processed; results (willibe presented.in the Auguct progress report.

Collections taken on 17 Jun; have now been processed; 6,106 fish oi

'23 species were taken'(Table 5). Most fish (2,039) were taken at Station 10B5, most species (15) 'at -16AS, and greatest biomass (592.2 g) at 16A1.

The spottail shiner and'spotfin shiner were most common and comprised E70.3% and 23.3% of the total' catch, respectively. Young of the golden shiner and common shi.ner were taken for 'the firrt time this year. Four male spotfin shiner were tuberculate and one rosyface shiner exhibited br'ick-red breeding coloration. Fishes that bore slight black spot infestations were the spotfin shiner (125 specimens), spottail shiner and bluntnose minnow (2 each), and common shiner and_ fn11 fish (2 each). Anchor w

. worns parasitized.4 pympkinseed, 4 bluegill,1 spotfin shiner, I white sucker, and 1 tesse11ated darter. One smallmouth bass was parasitized by a leech. One spotfin shiner had a deformed lower jaw and another was missing its right eye.

- No pattern of parasite infection or anomalies was observad with

, respect to the loc 7 tion of TMINS from either collection.

IMPINGD1ENT OF FISH Objectives:.(1) To determine the numbers and species impinged on the

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-river water intake screens; (2) To detcrmine day-night differ 'ces in impingement frequency; and (3) To determine the extent of me

'ity of impinged fish.

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' Progress:. Impingement surveys' vere conducted on 13-14 and 29-30 July 4-3

st1the THINS ^ Unit 1: and;2 Intakes. (Table 1). Unit 1 irpinged 28 fish of p

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17 ' species weighing 54.5 g-l(Tables 6 through 9). All fish were dead'and

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Lallbut M e were: young. Fish numbers were highest during the 13-14 July surveyD and biomass was highest during' the.29-30 survey. More fish were

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Jco11ected.at 0400 h than'during the other survey periods. The estimated y,

.._ impingement for Unit 1.for July was 434 fish weighing 844.8 g (1.9 lb).

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. Unit 2-impinged ' 33 tish of 8 species weighing 183.5 g (Tables 10 through 13).- Most fish were young and all kere dead. Fish numbers and

biomass were highest during the 29-30' survey. The estimated impingement

.for ' July for Unit:2 was 512 fish weighing 2,844.2 g (6.3 lb).

The total estimated impingement at TMINS during July was 946 fish weighing 3,689.0 g (8.1 lb).

' ELEC'IROFISHING Objectives:.(1)'To provide specimens for radiation analysis and movements studies;.and (2) To determine the relative abundance of fishes vulnerable to electrofishing in various parts of York Haven Pond.

. Progress: Sampling was conducted on four nights in July (Table 1).

Twenty-four: collections in 12 zones yielded 650 specimens of 20 species

(Table 14).. The quillback (184 - specimens), smallm6 ith bass (149),

pumpkinseed (97), redbreast sunfish (65), and bluegill (51) were most abundant..

A total' of 30 fish was tagged for movements studies.

Seventeen smallmouth bass, 5 rock bass, and 2 channel catfish were sacrificed for

.rcdiation analysis.

.MOVEMEPTrS OF FISHES Objective: To determine if fisbes in waters receiving the TMINS effluent mix with fishes from othar areas.

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7 Progress: A total of 514 fish was tagged and 13 previously tagged fish were recaptured in July. Recaptured fishes included the channel catfish (2 specimens), rock bass (8), and smallmouth bass (3). The channel catfish moved upstream distances of 3.5 and 20.9 km.

Three rock bass move 2 upstream distances of 3.5 to 32.6 km, one moved 0.3 km downstream, and the remaining four were recaptured in the same areas in which they were tagged.

One smallmouth bass mc.ved 4.0 km upstream while the othe-two were recaptured in the same areas in which they were tagged.

CREEL SURVEYS, Objectives:

(1) To determine the extent and success of sport fishing; and (2) To determine information on angler residence and use of catch.

Progress: Creel surveys were conducted in all areas on 4, 9,19, and 28 July (Table 1).

The 355 anglers interviewed fished 470.05 hours5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br /> and caught 545 fish (Tables 15 through 18). The actual harvest was 156 fish or 28.6% of the total catch. The mean catch per effort (c/e) was 1.16.

The highest number of anglers (154) occurred at the York Haven Generating Station.

The largest total catch (258), largest total harvest (89), and most hours fished (210.65) were recorded at the General Reservoir.

The highest mean c/e (4.79) occurred at the West Dam.

Smallmouth bass (269 specimens) were caught in greatest numbers.

Other common species included the channel catfish (113), walleye (50),

enmmon carp (41), and rock bass (26).

Approximately 73% of the anglers lived in York or Dauphin counties.

Most of the anglers reported they eat some of their catch.

AMBIEhT WATER OliALITY objective: To determine concentrations of selected water quality parameters in ambient river areas and the TMINS effluent, a

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Progress: Water quality samples were collected on 6 and 20 July Cat the five river stations (Table 1).

Data are currently being analyzed; results will be presented in the August progress report.

POPULATION ESTIMATES OF FISTES Objectives:

(1) To determine if differences exist in fish

. populations between areas receiving the TMINS effluent; and (2) To estimate populations in other areas available for recruitment.

Progress: Sampling was conducted on 10 nights in July and will continue through the second week in August. -

TIERMAL PLUME MAPPING Objectives:

(1) To determine temperature ata; (2) To define

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the discharge plume; and (3) To check the accuracy of the analytical

. plume model.

Progress: Thermal plume mapping was conducted on 21 July (Table 1) in conformance with the requirement that a plume map be done once during 3

the summer low river flow (less than 10,000 cfs; 283.2 m /s). During the 21 July mapping the river flow was 8,980 cfs (254.3 m3/s); maximum A T at the, Discharge was C.4 C (Table 19). ' River water temperature varied little (i 1.0 C) between the Unit 1 Intake and 1900 m downstream of the TMINS Dist.harge. The plume wuc limited to the innediate area of the Discharge.

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. Table 1 Sampling conducted:in compliance with the Generation Procedures Manual in July:.1981.

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- Jul:

Jul Jul

,Jul-

-Jul PROGRAM

' 1-4 5-11

12-18 19-25 26

• Macroinvertebrates X-X-

Ichthyoplankton:

Far-Field X

X

'X X':

Entrainment X

X Trapnet X

X Seine X

X Impingement of Fish

'X X

Electrofishing X

X Movements of Fishes X

X X-X Creel Surveys X

X X

X 1

c Ambient Water Quality X

X Population Estimates of Fishes X

X X

X Thermal Plume Mapping X

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Ptshes tenen by trapnet on 13-15 h ty 1981 near r ers.

gert m TM-v]r-tA3 m-Aor-t t A2 q.Aor-ItA3 m-q-25 2 r,ta t u jten Bata 13-14.

14-15 13-14 14-15 13-14 14 15 L3 14 14-15 Etme 1424-1451 1454-1509 1415-1621 1423-1132 1408-1407 1410-1415 1355-1314 1317-1320 2tr temp (c) 32.0, 27.5 27.5, 27.5 31.0, 27.5 27.3, 25.0 31.5. 27.5 27.5, 25.0 33.0, 27.5 27.5, 27.0 Weter temp (c3 27.0, 29.5 29.5, 27.5 23.5, 28.5 28.5, 26.0 29.f. 28.5 29.5, '7.0 29.0, 28.0 29.0, 25.5 Dissolved nxvtan (eg/t),

12,2, 11.4 11.4, 11. *.

11.1, 11.0 11.0, 10.1 11..

10.8 10.8. 10.6 11.2, 10.2 10.2, 10.4 pM 1.0, 8.9 R.8, 8.9 9.0, 9.8 9.S 8.8 1.0, 8.7 8.7 5.7 8.7, 8.7

8. 7, 8.7 Seccht tilse (cm) 91, 29 23 31 96, 3*,

36, 84 91, 48 t.8, 35 91, 43 43, E4 River State (m) 1.16. t.13 1.13, 1.11 1.15, 1.13 1.13. 1.11 1.16, 1.13 t.13, 1.11 1.16, 1.13 1.t3, 1.11 Westher fla r e.

Partly Cloady.

Hare, Parrty cloudy.

Hare, Partly Cloudy,

Haze, Fartly Cloude, Pa rtly_C h rd s Pstt r Cimov Ptrtly h dv Ptrtly C t Nd y Paffly Cloudy h glylloudy Parfly Cloudy PegMtydv No. of spectmen, 16 20 56 103 12 20 273 191 689 Ets. of S pec ies 5

3 7

10 5

7 7

10 16 Starar4 shot 1

1 0.1 rammon c a r p 1

t 0.1 r.otien shiner 1

1 0.1 Sa t t tbec k 1

1 2

0.3 O

Yeltm, bu t thes4 1

1 0.1 seman buttheaJ 1

1 0.1 2%annel catfish 1

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4 15 22 3.2 Elec k bees 2

1 2

1 1

7 1.0 Dedbreast sun f is h 1

3 4

8 1.2 P2spkingeed 11 4

33 67 4

to 160 96 397 56.2 Rtuettti t

7 15 3

36 9

70 10.2 Smallm uth haeg 1

1 0.1 bhtee crerp te 2

13 9

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1 56 47 137 19.9 Riack ersepte 3

4 2

2 15 13 44 6.4 vett+w perch 1

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Tcble 3 Fishee taken by trapnet em 27-29 July 1991 near TMINS.

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IM-aMF*ttA2 TM-A t t1A1 TM-A0?-732 Total I catch Pete 27-25 28-29 27-28 24-29 27-28 23-29 27-28 28-29 Tire 1421-1515 1517-1428 1410 1452 1455-1400 1403-1435 1417-1349 1350-1350 1355-1326 Air temp (c) 28.0, 24.0 24.0, 24.0 29.0, 23.5 23.5, 23.5 28.0. 24.0 21.0, 23.5 29.0, 23.0 23.0, 23.5

'ater Temp (C) 25.3. 2'.

1 24.5, 24.5 25.0, 25.0 25.0, 24.5 25.0, 25.0 25.0, 24.5 25.5, 25.0 25.0, 24.5 Dissolved owygen (eg/t) 9.7, 9.0 9.0, 8.7 9.3, 8.7 8.7, 8.5 9.2, 8.8 9.8, 8.4 8.2, 9.4 8.4, 8.3 pH 7.5, 8.1 S.I. 8.1 7.5, 7.1 7.9. 8.0 7.6, 9.0 8.0, 9.1 7.5, 7.8 7.8. 8.1 Seccht Disc (cs) 30, 31 33, 25 30, 33 33, 28 30, 36 36, 25 30, 38 38, 28 River State (m) 1.12, 1.24 1.24, 1.19 1.12, 1.24 1.24, 1.19 1.12, 1.24 1.24, L.19 1.12, 1.24 1.24, 1.19 Weather Partly cioudy,

0sercast, Pitt ty Ctedy, Overcast.

Partly Cloudy, Ove rc a s t,

Partly Cimidy,

Overcest, overess L

&se nsse r>se gg s,e Ovetcast overga,t rNerc as t overgatt Ovez ast M. of Specimens 12 12 22 18 21 3

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38 208 H

N lis, of Sp-cles

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5 6

5 6

6 10 6

14 reerwn carp 1

1 1

3 1.5 iperftn shiner 1

t 0.5 Ou t t tb ec k 1

1 1

8 5

16 7.7 Northern hog sucker i

1 0.5 Shorthead re **.orse 1

t 0.5 5 tom butth

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3 1.4 channet catfish 2

2 8

12 5.8 Rnck base 2

2 1.0 Pr o triead 2

1 8

5 9

1 14 5

45 21.6 5tnett11 t

3 2

6 3

15 7.2 S.eattamth base L

1 0.5

'3 tee crappte 4

5 5

4 6

1 27 20 72 34.6 Stack crapple 6

3 5

5 2

2 8

4 35 16.8 L now pfech t

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Table 4 Fishes taken by seine en 13 July 1781 near TMfNS.

Station TM-ACF-1391 TM*AOF-1991 TM-AOF-16A3 TM-AOF-1A2 TM-AOF-t'Al TM-A9F-10A2 TM-ACF-934 TM-AGT 2At rMf407-991 TM-ACF-44J Total C3tch t Lee 0901 1232 0123 0949 1034 1054 1112 1129 1143 1013 4tr Temp (C) 26.5 30.5 29.0 29.0 29.0 30.0 29.0 29.5 29.0 29.5

'Jacer Temp (c) 29.0 30.5 29.0 28.0 25.5 28.5 28.0 29.0 28.0 29.0 Dissolved Owvtan (mg41) 11.6 13.6 7.6 9.6 9.4 8.8 9.2 8.6 9.4 14.0 pH 1.2 9.1 8.8 9.7 9.6 9.5 8.6 9.6 9.6 9.4 5,cchi aise (en) 61 71 61*

71 81 St 61 86 76 102 '

Rtver stage (m) 1.16 1.16 1.16 1.16 1.16 1.16 1.16 1.16 1.16

. 1.16 Weather Clear Ra r e Partly Partly Partly Overcast Ove rc a s t Partly Ra r e Partly clotif y C 1 &nd y C19qde C t e idy Cly;dy No. of Spec imens 26S 162 44 446 265 83 166 79 352 12 1377 No. of Spectee 6

11 4

12 12 8

8 7

7 4

21

w. out.igts 4

6 1

6 5

5 4

4 4

s as River chub 1

1 0.1 com-ty shiner 23 5

2 1

31 1.7 Common shiner 3

1 4

o,2 Spiteitt shiner 136 9

117 165 28 10'.

18 30) 1090 17.5 Pd bJ 2

0.1 swettewestt shiner 2

Spotftn shiner 74 73 57 64 64 41 9 23 4 443 gy,$ "4 1 3 3 6 63 3.4 Mimic shiner 31-ntnose minn+w 9 23 14 12 2 2 t 32 4,5 3 2 2 7 o,4 Fat fish Wh it e sucker 1 1 2 0.1 Northern hog sucker 1 1 0,g 4 0.2 Shorthead r-4hars. 1 3 Channet catfish 3 to 13 o,7 Bunded killtfteh 1 t 0,t Rnck hace 1 1 2 0.1 ruephtnseed 6 5 t 2 4 24 1.3 stuettti 2 2 4 0.2 4mattmouth beeg 2 1 1 6 1 2 2 1 3 19 1.0 '4htte crappte 1 1 0,g Stack crapple 1 1 0.1 I9 t* Lit.t ed_de rt er 3 1 1 1 6 4 3R 14 21 93 3,0

• Clest to bottom at indicated depth.

e

c. k. ~d s i Table 5 a F1thee taken by seine on 17 June 1991 near Ut!'G. streinn N-*er-13ms r!t-A ? r-Ita s ni-W r-Ea u -Ale tAz TM-ser-L6At ni-Aqdc3.u'igqrdp* tN-M F-941 T.:-tor-9s) m-Aar-44 2 rolet

• celeh time 0937 1236 0102 0931 1024
• 050 1116 1144 1211 0954 Air T**p (C) 22.0 25.0 23.0 21.5 22.0 24.0 24.0 24.0 25.0 19.0
• 4 ate r Teep (C) 25.5 26.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 25.0 Dissolved Owygem frg/1) 6.3 7.3 7.4 6.*

6.7 7.4 6.9 7.2 7.0 6.2 pH 7.7 7.5 7.6 7.6 7.4 7.5 7.3 7.4 7.3 7.5 seccht Dise (cm) 61 71 33 33 36 30 36 16 51 61 River stage (s) 1.72 1.72 1.** 1.72 1.72 1.72 1.72 1.72 1.72 1.72 t4 esther Light Partly Overca-Overcset Overcast Overcast Overesst Partly Pa rtly Overcast P e t ro C Iedy C1gudy C t o.1jv 2no. of spectmen, 210 2039 558 95 417 133 480 565 957 652 6106 ffo. of Species 7 12 15 11 12 12 8 10 to 6 23 fra. af Magle 4 5 4 5 3 3 4 4 4 4 to central gronerotter 1 1 e, conden shiner 3 2 5 0.1 comely shiner 1 12 7 to 1 31 o,$ Cosima shiner 1 1 1 3 + 5portatt shiner 64 1710 63 22 170 4R 242 467 882 60 6 4294 70.3 Swallmeta tt shiner 2 2 + >a 143 Boeyf ace shiner 1 1 + %potftn shiner 173 2 ** 6 443 45 201 26 193 27 16 31 1421 23.3 filmte shinet 1 1 = 2 + stuntnose winnow 1 1 1 1 4 C.1 1 1 23 n.4 Fallftsh 6 6 4 1 1 3 r)u t it b c k 2 2 4 '4h t te suc tre r 6 4 6 1 3 24 0.4 trort hern haq s er ker 1 1 1 3 + 1horthead redborse 9 2 6 1 11 5 7 13 16 1 70 1.1 Roc k se,, 1 1 + tedbreast surftsh 2 2 1 L 1 7 o,t Pmpk inseed 1 2 9 4 2 18 0.3 1 9 14 0.2 sinegitt 1 2 1 Seve timnuth been 2 7 20 6 21 22 4 11 6 8 107 1,3 Rteek creppte 1 1 T**=ettstei darter 6 13 4 6 23 11 4 1 65 1.1 lellrw_re e 2 2 2 t 7 0.t

• i.e., than o.c5;

Tcble 6 Numbers of fishes impinged at the Unit 1 Intake during a 24-h impingement survey on 13-14 July 1981. Date 13 14 14 Time 2000 0400 1200 3 Volumetric Flow Rate (m /s) 0.84 0.84 0.84 Number of River Water Pumps: ~ Nuclear Service 1 1 1 Secondary Service 1 1 1 Decay Heat 0 0 0 Intake Velocity (cm/s) NA NA NA River Flov (m3/s) 332.7 321.4 317.2 Air. Temp (C) 29.0 25.0 29.0 Water Temp (C) 28.5 27.5 27.0 Total Condition of Fish Alive Dead Alive Dead Alive Dead Alive Dead Spottail shiner 1 1 2 Yellow bullhead 1 1 2 Channel catfish 2 1 3 6 Margined madtom 2 1 2 5 Rock bass 1 1 Tesse11ated darter 4 4 5 Total 6 9 5 20 NA Not Availabic. Table 7 Summary of lengths, weights, breeding condition, and numbers of fishes impinged at the Unit 1 Intake en 13-14 July 1981. Species Fork Length Range Reproductive Status Total Weight Total Number (5 mm aroups) (n) Spottail shiner 31-35 2 Young 0.7 2 Yellow bullhead 21-25, 41-45 2 Young 1.4 2 Channel catfish 16-30, 51-55 6 Young 3.1 6 Margined madtom 26-30, 36-40 5 Younn 1.8 5 Rock bass 21-25 1 Young 0,3 1 Tense 11ated darter 21-35 4 Younn 0.8 4 Total 8.1 20

.~

1. x r

'? . y Table 8 Numbers of fishes impinged at the Unit 1 Intake during a 24-h impingement survey on 29-30' July 1981, unte 29 30 30 Time 2000 0400 0 1:'00 3 i',1umetric Flow Rate (m /s) .0.84 0.84 0.84 Nun.ber of River Water Pumps : Nucicar Service 1 1 1 Secondary Service 1 1 1 Dec,y Henc 0 0 0 Intake Velocity (cm/s) -11 -11 -11 3 (m /s) 393.8 3 73.1 3 65.3 River Flow Air Temp (C) 21.0 17.0 23.5 Water Temp (C) 24.0 23.5 23,5 Total Condition of Fish Alive Dead Alive Dead Alive Dead Alive Dead Spottail shiner 1 1 2 Channel catfish 1 2 3 Bluenill 1 2 g 3 Total 2 4 2 8 Table 9 Summary of lengths, weights, breeding condition, and numbers of fishes impinged at the Unit 1 Intake on 29-30 July 1981. Species Fork Length Range Reproductive Status Total Weight Total Number (5 mm aroups) (n) Spottail shiner 31-35, 41-45 2 Young 1.2 2 Channel catfish 21-25, 56-60, 156-160 2 Young, 1 Juvenile 44.9 3 Bluenill 16-25 3 Younn 0.3 3 Total 46.4 8

.w Table 10 Numbers of fishes impinged at the Unit 2 Intake during a 24-h impingement survey on 13-14 July 1981. Date 13 14 14 Time 2000 0400 1200-3 Volumetric Flow Rate (m /s) 1.58 1.58 1.58 ~ Number of River Water Pumps: Nuclear Service 1 1 1 Secondary Service 1 1 1-Intake Velocity (cm/s) NA NA NA River Flow (m3/s) 332.7 321.4 317.2 Air Temp (C) 28.5 26.0 30.0 Water Temp (C) 28.5 .7.'0 27.0 Total Condition of Fish Alive Dead Alive Dead Alive Dead Alive Dead Channel catfish 2 1 1 A Margined madtom 1 1 2 Pumpkinseed 1 1 .Tesse11ated darter 1 1 Total 4 1 3 8 NA Not Availabic. Table 11 Summary of lengths, weights, breeding condition, and numbers of fishes impinged at the Unit 2 Intake on 13-14 July 1981. cies Fork Length Range Reproductive Status Total Weight Total Number or (5 mm aroups) (n) Channel catfish 26-30, 36-40, 136-140 3 Young, 1 Juvenile 34.0 4 Margined madtom 36-45 2 Young 1.3 2 Pumpkinseed 66-70 1 Juvenile 6.8 1 Tesse11ated darter 26-30 1 Younn 0.2 1 Total 42.3 8

g ^ g. + J G - - Table 12: Numbers of fishes impinged at the Unit 2 Intake during a 24-h impingement survey'on 29-30' July 1981. Date 29 -30 30 Time 2000 0400-1200 Volumetric Flow Rate (m /s) 1.58 2.66 2.66 Number of River Water Pumps: Nuclear Service 1 2 '2 1 1 1 Secondary Service . Intake velocity (cm/s). -5 -5 -5 3 River Flow (m /s) 393.8 373.1 3 6P.3 Air Temp (C) 20.0 16.0 2r.0 Water Temp (C) 23.0 22.5 23.5 Total' 'O Condition of Fish Alive

• Dead Alive-Dead Alive Dead Alive Dead Spottail shiner 1

4 3-8 Spotfin shiner 1 1 Northern bog sucker 1-1 1 Brown built.ead l' Channel catftsh 1 3 2 6 Margined madtom 2 ,2 .4 Pumpkinseed 'l '1 Tesse11ated darter 2 1 3-i Total 3 12 10 25 4 6 l i )

s Table 13 Summary of lengths, weights, breeding condition, and numbers of f 'shes impinged at the Unit 2 Intake on 29-30 July 1981 Species Fork Length Range Reproductive Status Total Weight Total Number (5 mri nroups) n) Spottail shiner 31-45, 71-75 7 Young, 1 Adult 9.0 8 Spotfin shiner 46-50 1 Juvenile 0.8 1 Northern hog sucker 201-205 1 Adult 119.7 1 Brv.m bullhead 16-20 1 Young 0.1 1 5 Channel catfish 16-30, 46-55,-61-65 6 Young 6.9 6 Margined madtom 26-30, 41-55 3 Young, 1 Juvenile 4.1 4 Pumpkinseed 16-20 1 Young 0.1 1 Tesse11ated darter 21-30 3 Younn 0.5 3 Total 141.2 25

t + s S 4 16:_ble 14 Numbers of fishes captured by AC electref tsher near TMUf5 in July 1981. Z one litt 1083 Lost L3Al LOA) 985 1582 1688 4A1 16A2 L5A2 15AL Date 6 Jul 6 Jul 6 Jul 6 Jul 6 Jul 7 Jul 8 Jul 8 Jet S Jul 8 Jul 9 Jul 9 Jul 2117 2147 2220 2302 2340 0024 2123 2207 2247 2320 0001 0036 0;tecten (=Ln) 15 16 16 19 IS 16 17 15 18 18.

• 15 17 Ttme Air femp (c) 23.0 24.0 24.0 23.0 24.0 22.0 26.0 25.0 25.0 29.0

'27.0 26.0 Water temp (0) 25.0 25.0 26.0 24.0 25.0 25.0 28.0 28.0 27.0 27.0 29.0 29.0 Olssolved ouygen (eg/t) 12.0 9.2 9.0 9.0 8.0 9.2 8.3 9.6 8.7 a.6 9.9 9.6 9.0 8.7 3,7 7.6 7.6 7.5 8.5 R.5 n.4 8.2 8.5 8.5 pq Conduettvity (mte rnehog /cm) 290 117 225 240 250 250 300 178 250 2 75 225 210 seccht Ot.c (eg) 58 69 76 25 25 30 56 76 30 33 76 91 votes ISO 190 I?C 205 205 200 200 265 200 195 205 200 6.0 5.0 5.0 5,) 6.0 7.0 A.5 45 6 1_, 7.0 9.0 5.5 2 1 late 2 Gttrard shed 1 Common carp colden entner 1 1 Tattfish 2 1 11 1 2 5 1 '5 Qu t t lhac k 1 3 6 'Jh t te soc ker 1 6' Therthand reshorse y.11aw bullhead 1 2 Channel retfish 1 6 1 toc k base 1 t 3 1 2 5 to 2 18. medbreset sunftsh 3 2 >d creen sunfish WD Pumpkinseed 2 6 3 5 13 5 1 12 3 Stuest11 2 3 1 4 saattamich bees 4 3 15 12 13 3 13 5 21 8 LO Largemnuth base 2 1 '4htte c rapple t Black croppte 1 1 t Yellow perch 2 1 2 Wallete 8 to 22 .' ) 41 2 '. 10 14 8 42 17 49 4o. of SpecLmen, No. of Spec tes 5 9 4 6 6 6 3 R 3 5 4 4

/ + Ts.ble 14 rantinued. lone 1131 1093 Lost 13Al taA3 935 ~92 16n8 4AL I NA2 15 A 2 ' LSAt Total ~~~ 22 Jul 22 Jul 22 Jul 22 Jul 22 Jet 23 Jul 23 23 Jat 23 Jul 23 Jul '1 Jul 24 Jul 2110 2135 2217 2250 2323 0002 2> 215) 2234 2309 2352 0030 Dste 0aretton (etal 15 19 16 19 . 18 19 18 to 19 20 19 18 Time Att Temp (C) 20.0 .20.0 20.0 22.0 21.0 19.5 17.0 17.0 17.5 18.0 19.0 13.0 water Temp (C) 26.0 27.0 26.0 25.' 25.0 25.0 21.0 25.0' 25.0 25.0 27.0 26.0 Diosateed Onyta3 (*g/1) 9.5 9.5 9.9 6.5 7.4 7.3 10.9 10.3 8.6 9.1 10.2 10.0 9.3 1.5 9.4 8.5 89 8.5 8.8 8.8 7.9 8.0 9.1 8.9 C ondue t te t ty (* t e remba e /cs) 3 40 260 290 250 240 275 325 240 275 275 300 210 pH 1eccht Ot.e (cm) 54 91 89 25 25 28 64 61 41 38 86 71 valts 200 195 195 190 200

• 00 190 190 190 190 200 205 Ayeo 4.5 7.0 7.0 3.5 6.0 4.5 -

7,0 5.0 4.0 7.q_ 7.0 4,}_, 1 4 1 3 3 16 Clarard shed 2 1 2 8 Comnna corp 2 Caldam ehiner 1 1 2 16 2 15 47 4 25 e 1 184 Fattftsh Qutitback 29 L uhtte socker t 13 8 Shorthead reJherse 1 Yettmw butthead 1 2 Channel catftsh 1 4' bJ 1 1 2 3 1 3 27 C3 psek base 3 1 t 4 t 8 7 65 Creen sunftsh t 1 Reibreast sunftsh Pumpkinneed 6 3 6 2 2 3 4 17 3 1 97 stuesitt 3 J2 2 1 1 2 51 3m41tmouth bass 3 7 3 1 4 5 2 6 5 6 149 Largemouth base 2 4 S 9 'dhtte crappte t 81ack crappte t 3 Yettew perch t wg g 7 3 'a 31 4 36 to 16 59 20 32 43 19 27 650 1 9 2 9 6 2 6 7 4 S 6 to 20 No. 7f S pecimens No. o{_1ppgles i S I 4

.g Table 15 A Creet survey data f rom the CR for each survey day in July 1991. Cay 4 Sat 9 Thu 19 Sun 29 rue Weather He a vy E s ta Clear Hare Overesst Rtwer stage (m) L.,3 9 lili 1.05 1,24 Air Terroreture (C) 11.5 19.5 20.5 31.5 31.0 32.5 30.0 33.5 30.0 22.0 24,0 25.5 Weter Ye-eere3 pre (C) 1),5 {1.0 23.5 19.5 29.0 __2229 ilx} 31,0 30.0 24.5 24.5 25,0 2 T Lee s : el mountag (0900-1330) a e a e b) af ternoon (1301-1700) h b b b c) e renigd101-119) e e e e Tf rr 41. Total Fer I Lme Fer t ad : Analere 14 9 23 14 9 26 13 9 8 11 9 144 Fish Caught 14 6 60 18 13 39 47 1 36 7 17 258 Fish rept 6 2 17 15 5 21 13 5 2 3 99 nours Fished 13.00 7.00 45.60 27.65 7.85 31.65 22.65 2.10 14.90 13.25 25.00 210.65 __garch/Fff.rt (h) l jle __ 0.85 1 12 0.61 1,56 1.23 2,109 0,48 2.42 0.51 P JF9 1.22 Day Tot als : 2 Anglers 22 44 48 28 Fish Caught 20 91 87 6" Fish Fept 8 37 34 10 Hours Fished 20.00 91.10 56.40 53.15 hs __ gat h/ Effort (h) 1 30 1.12 1.54

1. ' 1 Pd Eges es a

b c a b e a b c a w c f oial Common carp 1R 1R 1 Shorthead redhorse IR IR 1 Yellow bullhead 1R 1R 1 Rrown bultheed IK IK 1 Channel catfish IK 1R 7K 1R &K 4R 3K 1R 2R ICR IK SR 16K 24R 40 Rock bass 2K IK 1R IK 12K 2R 1K 1R 17K 4R 21 Redbreast sunfish IK 2K 1K 3 Pumpkinseed IK 4R lt 4K 4R 9 91uegill IK 1K 1 sunftshes (igggg(g upp.)1 2R 3R 3R 2R 1R 1R i2R 12 Sma11panth ba si 3K 6R 2R 7K 13R SK 5K 3R 6K 15R 13K 30R 1R 4K 20R 4R JK RR 4;K 122R 168 m gey. g g, IK IK t 1 Gener41 (denttftcation. E Fept. R Releas*i. s

o' Tr.ble 16 Creel e arver data from the West Dam for each survey day in July 1981.

==y 4 Sat 9 TNa 19 Sun es fue 'deather ITeavy R a f n Clear Partly Clo pty Ita te Overcast River Stage (a) tJO t.2j 1.05 LJ Air Temperature (C) 11.5 19.5 20.5 31.5 32.5 31.0 33.0 33.5 30.0 22.5 23.0 25.5 ater Teneratute (C) 23.5 23.0 23.5 29.5 28.5 29.5 28.5 12.0 31.0 24.5 25.0 25.5 Times; e) morntrg (0900-1300) e e a a b) afternoon (1301-1700) b b b b e i evenind1701-[10m e e e e TEAL Total Per Time Par L+1 ; Anglers 2 4 4 1 7 6 29 rich caught 32 1 29 il 7 3 10 L33 Flah Kept 1 2 3 N Haute Fished 2.00 3.75 9.no 8.00 1.00 1.25 3.75 27.75 J,t M iloJe thi t ty 2 40 3.93 5.39 7.00 2.46 2.67 4.79 Day Totatst Antlers 7 9 13 Flah CauR t at 79 13 h Fis% rept 1 2 isours Ftehed 5.7, 17.00 5.00 7 4.65 2.60 farch/Jff3rt (h L .L3_ 12*.g t23 e h I e b c a h g a b e rg Cmn carp LR 1R L Channel ent fish IK JR 3R 12R '2R IR 3R IK 2aR 29 Rock Sase IR IR 2R 2 $mallmouth bass 25R IR BR 12R 3R 1R 3R $$R 33 ' fay eve AR 4R 15R 2K 17R 2R 2K 44R 66 _ K Fept. R 9eteased.

e 4 a Table 17 Creet s,srver data for the East Dam for each survey day in July 1991. Day 4 Sat 9 Thu 19 Sum 28 Toe weather Heavy Raim Clear, Portly Cloudy Ra z e Dyercast l.30 1.28 1.05 1.24 River Stage (m) 19.5 19.5 21.0 31.0 32.5 13.5 29.0 33.5 30.0 22.5 22.5 25.5 Air Temperature (c) - y_;;gelmargeJ) ?3.0 23.0 23.5 28J 30.5 31.0 28.0 32.0 3LO 24.5 25.5 2J. 4 Times: el scening (0900-1300) a e e a b) af ternoon (1301-1700) b b b b c)

• m {ne ft701-21QO) e e

e e

tgrgg, Tot st Fer Time Period :

Angters 2 1 1 12 6 4 23 Fish Caught 3 5 7 4 19 Floh Kept 2 1 3 6 Route Fished 2.00 1.15 0.25 20.25 12.75 8.00 44.40 b3. b' ._J;91t5/Effors (b) 1 10 0,25 0.55 1 g0 o.,43 Dey Totate: Angters 2 4 12 to Fish Caught 3 5 11 fleh Kept 2 1 3 Itours Fished 2.00 1.40 20.25 20.75 ._JCAtth,ittfor t (ht_ t.50 0.25 0 }) ifSi s g 5 g t 5 e a h e a b c 1.cial t Chennat entfish IK 1R 1K LR gg

g 4

Radbreast sunfigh Lg gg g 1onftshas flegemig spp.)I 4R 2R tR m y -tma t t manth b ss s IK 2K 2R la 3K 3R 6 Ld?.K'*MMX h_D3 9 9 1R IR 1 1 Cenerst tJent i f ic a t ion. E Fept. R Retested.

~ I 3 ' 1 l 13:ble 113 Creel survey data from the YHCS for each survey day in July 1961. Dev & Sat 9 Thu 19 Sun 28 Tue Weather 'Hea vy Ra in. Cleer. Hate Overcast Light Rain eartly Cloudy River Stage (m3 1.30 1,;9 1.05 1, q4 Air Temperatuse (C) 19.5 19.5 20.5 33.5 34.5 34.0 32.0 35.0 27.5 24.5 24.5 25.0 m e d gm m algre (C ) 23.5 23.5 22.5 31.5 3.0,5 }0.5 30.0 11.0 29.0 24.5 25.5 10 T Lmes : a) corntog (0100-1300) a a a a b ) a f t e rnoon (1301-17001 h 5 h h c) eve 31re (1701-2190) e e e e TOTAL Tc t a t Fe r T ime Pe r iod :

Angler, 5

8 8 22 24 11 16 12 13 11 26 134 Fish Caught 1 18 19 29 9 16 5 10 18 10 135 Fish Kept 1 11 8 9 3 11 2 9 4 58 Mmers Fishe1 2.50 4.40 14.50 23.60 34.25 6.90 29.25 10.00 14.50 22.50 24.85 187.25 Cat c h/t([gr t_[h l_, 0.23 L_ml4 0,91 0.85 (4}0 0.55 0.50 0.69 0.80 0 40 0.72 1 Day Totals: bJ Ansters 13 54 39 50 35 Fish caught t 66 30 38 Fish Kept 1 28 16 13 Hours Fished 6.90 72.35 46.15 61.85 ,_galt fif[irt th) 0.14 0.91 0.65 0.61 h 12e11e g a b c a b e e b e a b e roggi Cnedon carp 3R llR 3K 3R IK I DR HR 4K 35R 39 Channel catfish IK lt 4K 1R 3K 1R 6K la IK 1R SK 4K 36K 4R 10 Rock bass IK LK IR 2K in } Redbremot sunfish IK IK t Pumpkinseed IK 3K Sg g Bluegill IX IK t Sunfishes (let2512 spp.)l 2R IR 3g 3 taaltmouth bass IK 3R IK TR PR 4R SK 1R IK 1R 4R 2R SK 32R 60 En11ere ?P IK IK 2.K 2R 4 1 Generit identtftention. K Kept. 3 Relected. 4

r /9 -3, 25 Tcblo 19 f t.arsal p1w e te:r.perati.re data (C) taken at 0.5 m intervata surf ace (5) to sottom ac 5 s., 20 s, ard 40 m of f shor e, above and below the TMINJ Discharge, 21 July 1951. Air Temp (C): Lew Point (C): Wind Speed (b/h)! Wind Direction: River flow (m3/ sit ?S4.3 River Flevetten fe): B4. 7 Start Finish Start Finish Time : 1140 1252 secondary Service /an.ps: Station operation Level (1): l'ait 1 1 1 Unit 1 0 0 Unic 2 3 1 Unit 2 0 0 Decay itest Pusaps: Nuclear Service Pumps: Unit 1 0 0 Unit 1 1 1 tr.it 2 la NA Unit 2 1 1 Effluent Rate (n. /s): 1.51 1.55 g antake Temp (C): 27.7 28.1 fffluent Teap frit 27.3 27.5 Distance f rom Ttiree Mlle Isler.d Shore Distance f rom Three Mlle laland Shore 40 m 20 m 5m 40 m 20 m 5m Depth bepth 25.9 26.3 26.6 5 Unit 1 Intaka 26.2 26.4 26.5 5 150 s. Downstream of D 26.0 26.4 26.8 0.5m 26.2 26.4 26.5 0.5 m 26.0 26.4 26.6 1.0 26.1 26.4 26.5 1.0 26.0 26.4 26.f 1.5 26.1 1.5 26.0 26.4 2.C 26.5 s 200 r Duns t r eam o f D 26.2 26.4 26.2 26.2 26.5 5 25 m Upstream of 26.2 26.4 26.5 0.5 ~ 26.2 26.3

• 26.5 0.5 Eischarge 26,1 26.4 26.5 1.0 26.2 26.3 26.5 1.0 26.4 1.5 26.2 26.3 1.5 26.1 2.0 25.8 26.0 26.1 S

300 m: twnstream cf D 25.7 26.0 26.1 0.5 26.7 26,9 27.0 Liact.arge (D) 25.6 26.0 26.1 1.0 26.7 26.9 27.0 0.5. 25.6 26.0 1.5 26.7 26.9 27.0 1.0 26.0 2.0 26.7 1.! 25.9 26.3 26.0 S 400 m. Downstream of D 20.6 26.6 26.7 -5 25 m Lownstream of D 25.9 26.3 26.0 0.5 26.5 26.6 26.7 0.5 25.9 26.2 1.0 26.5 26.6 26.2 1.0 25.8 26.2 1.5 26.5 1.5 25.8 26.1 2.0 26.5 26.6 26.5 5 50 m Dematream of D 26.0 26.3 26.6 s bu0 m. Lownstream of D 26.4 26.5 26.5 0.5 26.0 26.3 2'. 5 0.5 26.3 26.5 26.5 1.0 26.0 26.3 1.0 26.5 1.5 26.3 1.5 26.4 26.5 26.5 s 75 m Downstream of D 26.3 26.4 26.6 s 1000 m Dunstream of D 26.3 26.5 26.5 0.5 26.3 26.4 0.5 26.2 26.5 26.5 1.0 26.2 26.3 1.0 26.5 1.5 26.1 26.3 1.5 2o.0 26.4 26.4 s 100 m Dowiatream of D 26.5 26.6 2e.t s 1900 m bownstream of D 26.0 26.4 26.4 0.5 26.5 26.5 26.6 0.5 25.9 26.4 1.0 26.5 26.5 20.c 1.0 25.9 26.4 1.5 26.4 26.5 1.5 26.4 26.5 2.0 26.4 26.4 26.4 5 125 m Lownstream of D - 26.4 26.4 26.4 0.5 26.3 26.4 26.4 1.0 26.2 1.5 .}}