Post-Impingement Fish Survival

Dunkirk 

Winter, Spring, Summer, and Fall

1998-1999

Prepared for NRG 

by Beak Consultants Incorporated
Post-Impingement Fish Survival

at Dunkirk Steam Station

Winter, Spring, Summer and Fall

1998-1999

Prepared for:

NRG Dunkirk Power L.L. 

106 Point Drive 

Dunkirk, NY 14048

Prepared by:

Beak Consultants 

140 Rotech Drive

Lancaster, NY 14086

January 26, 
TABLE OF CONTENTS

1.0 Introduction

Background

1.2 

Methods

1 Low-Pressure Spray System Efficiency Testing

Collection and Handling Mortality Testing

2.3 

Extended Survival Tests

Water Quality Monitoring

Station Operating Conditions'

2.4 Analytical Procedures

Results and Discussion

1 Low-Pressure Spray System Efficiency Testing

Collection and Handling Mortality Testing

3 Post-Impingement Survival

Winter Testing

Spring Testing

Summer Testing

Fall Testing

Water Quality Monitoring and Station Operating Conditions

Optimization

Discussion

Literature Cited

Page

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.: 7

: 7

t. 

.,

; 9

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Figure 

LIST OF FIGURES

Collection apparatus as set up at Dunkirk Station
Table 1:

Table 2:

Table 3:

Table 4:

Table 5:

Table 6:

Table 7:

Table 8:

Table 9:

LIST OF TABLES

Physical characteristics of the prototype dual-flow traveling screen at the

Dunkirk Steam Station.

Summary of collection efficiency results on December 2, 1998 at the

Dunkirk Station.

Handling and holding mortality testing results at Dunkirk Station

December 19- , 1998.

Dunkirk Station impingement survival testing results, December 20-

1998 and January 6- , 1999.

Dunkirk Station impingement survival results for "juvenile" and "adult"

rainbow smelt, December 20- , 1998 and January 6- , 1999.

Dunkirk Station impingement survival testing results, April 20- , 1999.

Dunkirk Station impingement survival testing results, August 16-September 3

1999.

Dunkirk Station impingement survival testing results, November 2-

1999.

Comparison of 24-hr impingement survival rates (8) of target fish species at

Dunkirk Station before (1987 and 1990-1991) and after (1998- 1999) installation

of the prototype dual-flow traveling screen.
0 INTRODUCTION

1.1 Background

Beak 

(NMPC) to evaluate the survival of fish impinged on a newlyinstalled prototype Ristroph-type

dual-flow traveling screen at its Dunkirk Steam Station. The prototype screen was engineered by

N1\tIPC and manufactured 

to maximize the survival of impinged fish for their return to Lake Erie, in accordance with Clean

Water Act 

available (BT A) for minimizing 

Impingement survival testing was 1999

Spring 1999, Summer 1999, and Fall 

N1\tIPC. On June 6, 1999, NRG Dunkirk Power LLC 

proceeded with the completion of the summer and fall testing.

Major impingement survival of 

impinged species on a seasonal basis; 2) to 

on impinged fish; 3) to evaluate the effectiveness of low-pressure spray wash on the removal of

fish from the screen; and 4) to determine ways to optimize post-impingement survival.

1.2 Dunkirk Station Description

The Dunkirk Steam Station (Dunkirk) is located on Lake Erie in the ~ity , New York.

The station is coal-fired and has four units with a total nominal rating of 

utilizes a once-through condenser cooling water system.. Cooling system water enters the station

through a shoreline intake located at the 

under a skimmer wall and enters a common forebay before passing through four sets of bar racks

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to separate intake tunnels for 

4). Water 

dual-flow traveling screens.

During 1998, one of the flow traveling 

replaced with an improved prototype dual-flow travelinKscreen. The improved 

in Screenhouse #1 is approximately 

sections connected to form an endless belt. inch by 

inch "smooth tex" woven stainless steel cloth and has an attached bucket at the bottom to collect

fish as the screens ascend (see Table 

the traveling screen, their contents are washed into a fish return trough by two inside and two

outside low-pressure spray wash headers. The screen pressure spray

wash which 

positioned above the 

combines with flow carrying fish and debris from Screenhouse #2 before entering a hydrostalic

pump well. The 

fish return pipe into Lake Erie with minimal harm to the fish.

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0 METHODS

Section 2. 1 describes collection efficiency testing designed to evaluate the effectiveness 

fish collection system. 2 describes tests to 

collection and handling, and Section 2.3 describes post-impingement survival testing. 

2.4 describes the analytical procedures for estimating survival rates. 

was the dominant (major) fish , and secondarily fish

species of recreational/commercial importance.

1 Low-Pressure Spray System 

A mark/recapture study was performed to pressure spray

wash system for removal of fish from the screen to the fish return trough. 

two , each of which 

Testing was 

system.

Efficiency testing was conducted prior to survival sampling on December 2, 1998. 

made on the prototype dual-flow traveling screen installed in Screenwell # 

The screen has separate controls for the inside and 

performed on six combinations of inside and outside spray-wash pressures from 0 to 10 psi.

On the day of 

collection troughs were cleared prior to sampling and all the spray wash nozzles appeared to 

working. Near the end of 

and lower 

continuously rotated at variable speed (usually near , i. , nonnal operation).

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Test fish were stained with rose bengal (a red biological stain) and placed into 

fish were measured to the nearest mm prior to testing. 

bass and yellow perch (mostly smallmouth bass). 

in length (Appendix Table A-1). 

the ascending fish buckets (two to four fish per bucket), and ended by counting the 

in wire-mesh baskets fabricated to fit inside the fish and debris troughs.

2 Collection 

study was conducted , 1998, to determine the 

collection and 

Commercially available fish (golden shiners) were used in the study. , serving as tests

for the effects of handling, were 

upstream in the 

Following introduction, the fish were , i.

their initial condition was noted and they were held for the 24-hr extended survival observation

period.

An additional group of fish was held in the extended survival test tanks as a 

effects of holding, while minimizing handling. 

device, these fish were treated as described above. 

3 Impingement Sampling

Extended Survival Tests

The 24-hr survival 

testing: winter (December-January), spring (April), summer (August-early September), and fall

(November). The intent of the 

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three to eight target fish species seasonally. In 

emerald shiner

, gizzard shad, rainbow smelt, spottail shiner, white bass, white perch, freshwater

drum and yellow perch. , except that alewife

and trout-perch replaced gizzard shad and yellow 

species were rainbow smelt, alewife, and white bass. In 

alewife, emerald shiner, gizzard shad, rainbow smelt, spottail shiner, white bass, white perch, and

yellow perch.

Winter sampling occurred during an 8-hr period on four consecutive nights during December 20-

, 1998 and four consecutive nights during January 6- , 1999. Spring sampling 

an 8-hr period on eight consecutive nights during April 20- , 1999. Summer 

during four consecutive nights during August 16-20 and four consecutive nights during August

30-September 3 , 1999. Fall sampling hr period on eight consecutive nights

during November 2- , 1999.

Fish were flow traveling 

Screenwell # 

rotated at variable speed. Screen speeds averaged 21 , 14, 30 and 51 ft/min during winter, spring,

summer and fall 

programmable logic circuit as its normal mode of operation. 

the effects of screen speed on fish survival, but no discernible effect was observed during testing.

A T-shaped 

impinged fish s fish/debris collection

trough or to a collection table (Figure , the sluice

was blocked off and fish were diverted to the collection table. 

calm area for fish to , the fish were 

bucket and lifted out of the water. 

in order to minimize 

netted directly from the collection table.

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Each sampling event generally continued for up to , but 

numbers of fish. , when 

During each 2-hr sampling event, fish 

appropriately-sized holding tanks. , the fish return trough was

returned to its 

fish/debris collection trough, and by blocking flow to the collection table (Figure 1).

The holding tanks included 60-gal and 100-gal rectangular fiberglass or galvanized steel 

and 20-gal, 130-gal and 240-gal round fiberglass or plastic tanks. 

and 240-gal) were used almost exclusively during tests conducted in the spring, 

Holding tanks were 

submersible pumps. through tanks were set up near the test 

circular current was maintained in the round tanks by 

the holding tanks was exchanged approximately three to nine times 

in tanks so as not to exceed 5 g of fish per liter of water.

Large fish Otherwise, handling was

minimized and practically all available fish were tested, unless the collections contained 

for which quotas were well exceeded.

Initial condition was determined for all fish 

classified as live, stressed, or dead according to the following conditions:

Live - No , fish actively 

upright position.

Stressed - Fish with visible physical damage such as missing patches of scales, tom fins

hemoIThaging or 

maintaining orientation in a nonnal upright position.

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Dead - Fish with no obvious external signs of life and/or severely damaged or 

individuals with only slight opercular movement.

Only fish classified as live were transferred to holding tanks. 

omitted from the study. Stressed 

Initially live fish held for hr) testing were , 4, 8 

after collection. At , the numbers of dead and stressed fish were recorded, and

the dead fish were removed from the holding tank, identified to species, and measured for total

length. At the 24-hr observation, remaining fish were identified to species; characterized 

dead, or stressed; and measured.

During each of the observations, length measurements were made on a 

fish per species per collection if sample sizes were large. 

evaluation (e. , the 

counted.

Water Quality Monitoring

Water quality parameters were measured at the intake during sampling and 

extended-survival holding 

taken at a mid-depth location at the , and 

(approximately 0, 4 C), pH, dissolved

oxygen (DO) concentration (mg/1), and specific conductance 25 DC). Water 

in the , DO

concentration were monitored in selected holding tanks at the beginning, middle, and end of each

collection period and extended survival monitoring period.

Station Operating Conditions

Information on , such as 

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"13

(CWP) operation, service water pump (SWP) operation, and flow rates, was obtained by direct

observation and was recorded on a daily basis 

screen rotation speed was recorded from the display/control box located in Screenhouse # 

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Analytical Procedures

.....;

Estimates were made for the initial survival rates (SJ and extended, 24-hr survival rates (S ) of

the test fish by species and life 

initially live fish (LJ by the sum of those initially determined to be live, stressed (STJ, and dead

(D). The 

the number of fish classified as live at the end of the 24-hr observation period (L ) by the total

number of fish initially live and observed for extended survival (L). Post-impingement survival

(S) was 

calculations, fish observed as being stressed initially or at 24 hr were treated as being dead.

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0 RESULTS AND 

1 Low-Pressure Spray System 

Recovery rates of marked smallmouth bass and yellow perch released into the ascending 

of the prototype screen ranged from 82% to 100%) came

with low (0-5 psi) outside spray pressures. Nearly all fish missed by 

collected in the debris trough (Table 2). 

2 and ACollection and Handling Mortality Testing

During testing on December 19, 1998, none of the 49 golden shiners (handling controls) 

to the collection table 

shiners held for 24 hours died, which is equivalent to a 

survival rate (Table 3).

Post-Impingement Survival

Winter Testing

Thirteen species and 6 775 fish were 

sampling on December 20- , 1998 and January 6- , 1999 (Table 4). Targeted 

738 emerald shiners, 1 927 juvenile gizzard shad, 614 rainbow smelt, 297 spottail shiners, 93

adult gizzard shad, 66 yellow perch, one white bass, and one freshwater drum. 

911 fish were collected but not evaluated for survival.

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Emerald shiner was the most abundant species 

114 mm (Appendix 1). 8%) of the 3 738 emerald 

collected for testing were alive and in excellent condition. , the total survival rate

for emerald shiners, unadjusted for handlinglholding mortality, was 98.2% (Table 4).

Juvenile gizzard shad was the second most 

length from 67 to 197 mm (Appendix Table B-2). Fifty-four of 1927 juvenile shad (2.6%) were

dead at the time of collection, while the remaining appeared to be unstressed (Table 4). 

, 34 , resulting in a 

survival rate of 94. , unadjusted for handlinglholding mortality.

Adult gizzard shad were not abundant, and only 93 specimens were collected. 

in length from 269 to 3). Most of 

lost scales along their lateral line, yet only three were dead at the time of collection, and one fish

died and three became hr holding period (Table 4). Overall, the total

impingement survival rate for adult 5%, unadjusted for handling/holding

mortality .

Rainbow smelt was the third most abundant species 

56 to 147 mm, with a bi-modal distribution separating smelt into two size groups (approximating

juveniles and 4). All rainbow 

including both juvenile and adult fish, appeared to be unusually thin, but initial survival 

good (95.3%). 

unadjusted for handlinglholding mortality (Table 

The ratio of 

subsamples of fish classified as initially dead, initially stressed, dead at 24 hr , stressed at 24 hr

and alive at 24 hr 

rainbow smelt. , the 

unadjusted for handlinglholding mortality, was 71.0% and 88.6%, respectively (Table 5).

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Spottail shiner was the fourth most abundant species collected. 

59 to 118 5) and were in 

spottail shiner, unadjusted for handlinglholding mortality, was estimated to be 99.7% (Table 4).

Only 66 yellow perch were collected, ranging in length from 62 to 119 nun (Appendix Table B6). TheiF 

Only one individual each was collected for two target species, white bass and 

(Table 4). Non-target species collected included rock bass, trout-perch, bluegill, shorthead

redhorse, largemouth bass and sculpin. None was abundant.

Although a low level of holding mortalitY (1.4%) 

handled (Section 3.2), adjustments were not made to the extended survival rates to 

this control mortality. Thus, the 

underestimated. For some species, the observed mortality could have been explained entirely by

the effects of holding, and an 

100%.

Spring Testing

A total of 3 562 fish and 20 species was collected for survival evaluation during eight nights of

sampling on April 20- , 1999 (Table 6). 564 emerald shiners, 31~

rainbow smelt, 260 alewife, 132 spottail shiners, 51 trout-perch, two white perch, one white bass

and one freshwater drum. , with the exception of diseased fish, were evaluated

for survival.

Emerald shiner was the most abundant species 

from 48 to 111 7). As , emerald 

excellent condition when collected, with only a 1.5% initial mortality rate (22 dead fish and 

stressed fish combined). Their total 0% (Table 6),

unadjusted for handlinglholding mortality.

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Rainbow smelt was the second most abundant species collected (Table 6). 

length from 64 to , with a 

(approximating juveniles and adults) at 8). However, smelt

were not separated into size groups for analysis due to the small sample 

tests, all rainbow smelt collected, including both juvenile and adult fish, appeared to be unusually

thin, but initial 3%). However, some additional mortality was 

during the 24-hr holding period, resulting in a total impingement survival of 63.2% (Table 6) for

all sizes combined, unadjusted for handlinglholding mortality.

A total of , making this the third most 

Fish tested ranged in length from 89 to 210 mm 9). Although 

survival was good (83.5%), 129 fish died during the 24-hr holding period and 

stressed, lowering the total survival for alewife to 30.0% (Table 6), unadjusted for handling and

holding mortality.

Although not a target species for the spring, juvenile gizzard shad was the fourth most 

species collected. Fish 10).

Overall the unadjusted for

handlinglholding mortality, was 64.9% (Table 6).

Spottail shiner was the fifth most abundant 

from 45 to 125 11) and were in excellent condition. Total 

spottail shiner over 24 hr, unadjusted for handlinglholding mortality, was estimated to be 98.

(Table 6).

Trout-perch was the sixth most abundant species collected. 

to 129 12). The perch, unadjusted for

handlinglholding mortality, was estimated to be 94. 1 % 

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Additional target species collected included two white perch, and one 

freshwater drum. All survived (Table 6).

Non-target species collected included rock bass, rainbow trout, sculpin, round 

darter, quillback sucker, yellow perch, black crappie, fathead minnow, bluntnose minnow and

bluegill (Table 6). , all test fish for

the non-target species survived (Table 6).

Although a low level of holding mortality (1.4%) was observed for test fish held for 24 hr but not

handled during the fall/winter at Dunkirk Station (Section 3.2), no adjustments were made to the

extended survival rates to account for this control , the 

could be considered to be slightly underestimated.

Summer Testing

Seventeen species and 1 220 fish 

nights of sampling in late August and early September (August 16-20 and August 30-September

3). The lower 

reduced impingement rates during 

rates, the desired minimum number of test specimens (200) was not available for testing the three

target species. In all, 48 rainbow smelt, 12 alewives, and six white 

tested (Table 7).

All rainbow smelt were of the size the-year and were less than 69 nun

long (Appendix Table B-13). Although their initial survival 2%), the total 24-

hr survival 

mortality, was only 18.8% (Table 7). This survival 

rate of 70. 5% for smelt less than 2% (Table 6), when

they were 70 to 148 mm long. 

warmer water temperatures (21-26 OC) than in the winter (0- 12 OC) or spring (7- 16 OC), or to the

smaller size and more fragile condition of the young-of-the-year fish in the summer.

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All but one of the alewives also the-year and were 40 to 81 mm long;

the one exception 14). Only 

collected were alive initially and none 

(0%) for these young-of-the-year alewives was lower than the spring rate 

older alewives 95 to 219 mm long (Table 6). , the lower survival rate in

the summer may have been due to the warmer water 26 OC) than in the spring

(7- 16 OC), or to the smaller size and more the-year fish in the

summer.

White bass were never abundant in the 

1999 testing. In August-September tests, all but one of the six white bass survived during the 24-

hr holding period, yielding a total survival rate of 83.3% (Table 7), unadjusted for handling and

holding mortality. In the two previous , two white bass were caught and tested, and

both survived, suggesting that impingement survival should be high for white bass in all 

The three most abundant species collected in August-September were spottail shiner 

gizzard shad (338 fish), and rock bass 

target species for seasonal 

90.8% for spottail shiner, 70. 7% for , and 99.3% for rock bass 

summer rates for the three species were similar to the rates recorded in winter and spring 

(Tables 4 and 6), yet these species, like almost all of the species collected in the summer, we

represented by young-of-the-year fish.

Fall Testing

Twenty-seven species and 8928 fish (Table 8) were collected for survival evaluation during eight

nights of sampling (November 2- 11). Of the four seasons of 

greatest number of fish and species. 072 emerald shiners

488 juvenile gizzard shad, 473 rainbow smelt 263 spottail shiners, 178 yellow perch, 147

white bass, 45 white perch, and one adult gizzard shad. 

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Emerald shiner was the most , as in the winter 

when 24-hr survival rates were 98.2% and 95.0%, respectively (Tables 4 and 6). 

survival rate over 24 hr for emerald shiners in the fall, unadjusted for handling/holding mortality,

was 98.0% (Table 8). Tested 

16) and were in excellent condition.

Gizzard shad was the second most , and

consisted of juveniles (Appendix Table B-17) and 12 adults (Appendix Table B- 18). All but five

of the 1477 juveniles collected were alive, equivalent to a 99.7% initial survival rate, while 

the 12 adults (91.7%) were alive initially (Table 8). 

along their lateral line, as observed in earlier , the unadjusted total

survival rate for adult gizzard shad over 24 hr was 91.7% (Table 8). hr total

survival rate for juvenile gizzard shad in the fall was 98.6%, similar to the 94.7% survival rate

observed during testing in December and January, but higher than the rates in April (64.9%) and

August-September (70.7%).

Rainbow smelt, the third most abundant species collected in November, had a 75. 90/0 

total survival rate over 24 hr (Table 8), which was similar to the 83.2% rate in December-January

(Tables 4 and 5) and slightly 2% rate in 

(18.8%) recorded in August-September likely was associated with the small size (42 to 68 

and early age of the impinged rainbow smelt or the higher water temperatures then, as discussed

above. Smelt 

19).

Although , the 

impingement survival like its congener, ranging from 90.8% in August-September to 98.

during the fall testing in 

from 26 mm to 109 mm (Appendix Table B-20).

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More yellow perch 

January (66 fish), September (14 

relatively wide range of sizes of yellow perch , from 55 mm to 212 mm

total length (Appendix Table B-21). Yellow perch had a 98. 9% total impingement survival rate

over 24 hr in January and 92.9% in

August-September.

Like yellow perch, more white bass were collected in fall sampling (147 fish) than in DecemberJanuary (one fish), April (one fish) and August-September (six fish) sampling. Thus, November

testing provided the first opportunity to get a reliable estimate of 24-hr survival for this 

The total survival rate in November was 98.6% (Table 8).

White perch, a target species in all , has been relatively 

collections, with only 45 appearing in November, none in December-January, two in April, and

22 in August-September. All , indicating a 

rate for the three seasons in which they were collected (Tables 4, 7 and 8).

Impingement survival was high target species in November 

sample sizes were small (25 fish or 

had a survival rate less than 100%. Bluntnose minnow and smallmouth bass each had one of six

fish die, an 83% survival 

and thus was treated as a mortality (Table 8).

Water Quality Monitoring and Station Operating Conditions

Intake water temperatures ranged from 5 to C during the first four days of winter 

December 20-23 (Appendix Table C-1). 

January 6- , ranged from 0 to 4 oC (Appendix Table C-1). DO , or near

saturation at all times. 

pumps remained on line during the study l ). 

survival holding tanks was generally the same as at the intake during the first four days 

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(Appendix Tables C- l and C-2). During the 

extended survival holding tanks was 6 to c warmer than 

recirculation system (Appendix Tables C- l and C-2). Recirculated water 

the Unit 1 and Unit 2 

recirculated water for some time prior to being impinged.

During April 20-28 testing, intake water temperatures ranged from 7.5 to 13 oc (Appendix Table

3). DO , or near, saturation at all times. 

water pumps remained on line 3). Water 

extended survival holding tanks was generally the same as at 

and C-4).

During August 16-20 and August 30-September 3 testing, intake water temperatures fanged from

19 to 25 oc (Appendix Table C-5). During 11 testing, intake water 

ranged from 9. 0 oc to 13. 0 oc (Appendix Table C-7). For both 

concentrations were at, or near, saturation at all times. 

remained on line during the study (Appendix 5 and C-7). Water 

extended survival holding tanks were within 1-2 oc of the temperatures recorded in the intake

and the DO concentrations were at or near saturation (Appendix Tables C-5 and C- , and Tables

7 and C-8).

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0 OPTIMIZATION

The prototype traveling screen installed at Dunkirk has incorporated into 

mortality minimizing 

Ristroph" fish buckets with a modified 

separate low-pressure fish spray pressure 

Additionally, the prototype screen has 

distribute flow across the screen face.

The 

Impinged fish generally were in very good to excellent condition, indicating that the combination

of smooth woven wire screens, screen rotation speeds, and spray wash pressures was effective in

reducing damage to the , de-scaling) 

gizzard shad, which are 

easily shed (deciduous). 

damaging fish during transport to the return system.

Improvements to collection efficiency have the effect of improving 

fish not captured by the fish return system are sent through the cooling 

mortality. It 

those directed into the fish return trough. 

missed by the screens and sent through the plant.

Potential actions to improve collection efficiency at Dunkirk include the following:

Operate the outside spray wash pressure at 5 psi.

The gap between the flap seal and the 

measure this gap, but the flap seal did not appear to come into close contact 

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We recommend that the flap seal be tested. Since 

already high, only small improvements are necessary.

The lower outside spray nozzles are presently being directed nearly straight down, slightly

towards the 

screen. This row of nozzles should be not used or should be re-directed.

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DISCUSSION

Fish species selected as 

seasonally at Dunkirk. impingement survival of these target species

the survival of the majority of 

historically have 

Dunkirk and other steam generating facilities where tests have been conducted.

Beaudrey dual-flow screens were installed in both 1986

(Beak 

impinged on these newly-installed screens to determine the feasibility of retrofitting a fish 

system as a mitigation follow-up study was 

August 1990 and January 1991 to 

operation on fish survival (Lindsay 1991).

The survival results from these two earlier studies were compared to the results 

(1998- 1999) study to determine whether the screen system modifications described in 

0 (smooth woven wire screen

, 

Ristroph" fish buckets with a modified bucket lip to 

turbulence in the bucket, separate low-pressure fish spray wash and high-pressure debris spray

wash systems, and nose cone and fairings to more 

face) substantially improved the post-impingement survival of 

modifications should be most evident for species previously experiencing comparatively lower

survival rates. fragile" species typically include clupeids, such as alewife 

shad, and rainbow smelt.

Precautions must be taken in interpreting the results 

tests were conducted in Screenhouse #2, rather than Screenhouse #1 , the site of the present 

Differences in flow 

results. Also, fish handling procedures differed between the studies. 

1987 study were removed from a collection table by using .dipnets, which may have 

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fish more than the brailing procedures used in the present study. 

tests may have artificially 

estimates. On the other hand, impingement mortality estimates for 1998- 1999 are biased high

conservative) because stressed fish whereas 

counted as live fish in the , substantial differences in the 

survival rates between the present and past study 

modifications made to the new prototype screen.

Table 9 presents a survival rate comparison for seven target species for which there are 

data available. Since the data from the 1990- 1991 study pertain to six months 

January) and the data were not broken down by months, the results were arbitrarily applied to the

fall season in the 

1990- 1991 are utilized. , a

range of survival values and sample sizes are presented in the table. 

assigned seasonally to group 1999 

(December-March), June), September), and 

November).

Overall, the survival rates for seven target 

study in 

occurred for alewife, juvenile gizzard shad, rainbow smelt and white 

prior to the 1998- 1999 modifications was 

survival in the spring in 1999, when sample size was relatively large (260 fish), was 30% 

9). Differences in seasonal conditions 

years, but a 30% survival is unusually high for this species (McLaren and Tuttle 

the earlier and present studies, juvenile gizzard shad survival at Dunkirk increased from 

95% in the winter, 9% to 71 in the summer, and 16-78% to 99% in the fall (Table 9). 

smelt survival increased from 23-59% to 76% in the fall, but was less affected in the winter (59-

91 % to 1999

testing, but only 56-57% in the 1987 tests (Table 9). 

NRG Dunkirk Power LLC

January 26, 2000

Beak Consultants Incorporated

File:dunkirk-4season final.doc
for species exhibiting high survival rates in the early studies, such as 88%

earlier to 98% now), white bass (51-98% earlier to 83-99% now), and yellow perch (81-94%

earlier to 93- 100% now).

In summary, the spray wash and 

from the traveling screen to the fish return trough. 

indicate that the fish should be in good condition for return to Lake Erie, as reflected by their

condition within the fish return trough. , screenwells

and spray wash system, as demonstrated by the prototype tested in , appeared to

increase the 24- , post-impingement survival rate of several fish species commonly impinged at

Dunkirk, particularly- the most fragile , rainbow 

many species, the 24-hr impingement 

addition, no adjustments have been made to account for holding and handling 

for many species having a survival rate less than 

due largely or 

underestimated because stressed fish were , further

refinements in screening system design may not produce tangible increases in survival.

NRG Dunkirk Power LLC

January 26 2000

Beak Consultants Incorporated

File:dunkirk -4season - fmal.doc
LITERATURE CITED

Beak Consultants Incorporated (Beak). 

No. NYOO02321. Final Report. January-December 1987. Prepared for Niagara Mohawk

Power Corporation. March, 1988. 58 pp. + appendices.

Lindsay, B.P. 1991. Preliminary Dunkirk impingement survival 

information. Letter report prepared for Niagara Mohawk Power 

1991.

McLaren, J.B. and L.R. Tuttle, Jr. 1999. 

presented at Power Generation Impacts on Aquatic Resources Conference, Atlanta

Georgia. April 12- , 1999. EPRI and U.S. Department of Energy.

Scott, W.B. and E.J. 

Research Board of Canada. Ottawa. 966 pp.

NRG Dunkirk Power LLC

January 26, 2000

Beak Consultants Incorporated

File:dunkirk -4season- fmal.doc
Screen # 

rotation

inlet

collection table

screen , 

.. 

combined fish and

debris trough

Figure 1. 
Table 1. Physical flow traveling screen

at the Dunkirk Steam Station.

General/Site Data

number of traveling screens

manufacturer

operating deck level

design high water level

design low water level

channel base level

screenwell width

channel depth

number of screen speeds

low screen speed

high screen speed

Hydraulic Data

screen capacity

velocity trough mesh

head loss across mesh

total head loss across screen

approach velocity

Screen Data

effective screen width

number of basket sections

mesh opening size

mesh material

mesh diameter

depth of water in fish bucket

width of water in fish bucket

Low Pressure Fish Return S 

number of inside spray headers

number of outside s ray headers

number of s ray 

inside s ray 

outside s ray 

total low 

one

Brackett Green

581.5

575.

570.

552.

11' 2"

29'

variable

12' / min

64' / min

64000 m

1.48 

93"

84"

.::::1 'Isec

6' 0"

1/8" x 1/2" smooth tex

stainless steel

080" (12 ga.

3 -

6' 0"

two

two

12/11

5 - 10 psi

10 

162-230
Table 1. Continued.

two

7/6

30 

113 m

428

9000 m

hydrostaltic pum

26" J.D.

1500'

6' / sec
Table 2. 

at the Dunkirk Station.

Inside Outside Number Number Number Percent Percent

Spray Spray Released Recovered Recovered Recovered Recovered

Pressure Pressure from Fish from Debris from Fish from Fish &

( si) (psi) Trough Trou h Trou h Debris Trou h

100% 100%

96% 100%

94% 100%

92% 100%

86% 100%

82% 98%

DSduncoIlEF .xIs
Table 3. , 1998.

initial initial 24- 24- total total

test dead stressed alive survival dead stressed alive survival tested survival

handling controls 100. 100.00/0 100.

holding controls 100.00/0 98. 98.

D _SUll1ry.xls
Table 4. Dunkirk Station inlpingement survival testing results, December 20-23, 1998 and 9, 1999.

initial 24-

dead stressed alive dead stressed alive

emerald shiner 3693 98.8 % 3669 99.40/0 3738 98.2 %

gizzard shad "juvenile 1873 97.2 % 1825 97.4 % 1927 94.

rainbow smelt 585 95.3 % 511 87.40/0 614 83.2 %

spottail shiner 297 100.00/0 296 99. 297 99.70/0

gizzard shad "adult" 96.80/0 95.60/0 92.

yellow perch 100. 100. 100.00/0

rock bass 91. 7% 100. 91. 7%trout-perch 62. 100. 62.

bluegill 100. 100. 100.

white bass 100.00/0 100.00/0 100.00/0

freshwater drum 100.00/0 100.00/0 100.

shorthead redhorse 100. 100. 100.

largemouth bass 100. 100. 100.

sculpin 100. 100. 100.

target species in bold total 6775

sumry.xls
Table 5. Dunkirk Station impingement survival results for "juvenile" and " adult" rainbow smelt,

December 20-23, 1998 and 9, 1999.

initial 24-

dead stressed alive dead stressed alive

rainbow smelt (all) 585 95. 511 87.4 % 614 83.2 %

estimated 18. 169. 90.40/0 32. 133.4 78.50/0 187. 71.0%

estimated ~ 100mm 11.0 415. 97.4% 33. 377. 91.0% 426. 88.60/0

D _sumry.xls
Table 6. Dunkirk Station impingement survival testing results, April 20-28, 1999.

initial 24-

dead stressed alive dead stressed alive

emerald shiner 2525 98.50/0 2436 96.5 % 2564 95.rainbow smelt 284 89.3 % 201 70.80/0 318 63.

alewife 217 83. 129 35.90/0 260 30.00/0

gizzard shad "juvenile 200 94. 137 68. 211 64.

spottail shiner 131 99.2 % 130 99.2 % 132 98.

trout-perch 100.00/0 94. 1 % 94. 1 %

rock bass 100. 100. 100.rainbow trout 100. 100. 100.

white perch 100.00/0 100.00/0 100.00/0sculpin 100. 100. 100.

round goby 100. 100. 100.

johnny darter 100. 100. 100.

gizzard shad "adult" 66. 100. 66.

white bass 100.00/0 100.00/0 100.00/0

freshwater drum 00/0 00/0 00/0quilback sucker 100.

yellow perch 100. 100. 100.

black crappie 100. 100. 100.

fathead minnow 100. 100. 100.

bluntnose minnow 100. 100. 100.

bluegill 100. 100. 100.

Target species in total 3562

D _sumry.xls
Table 7. Dunkirk Station impingement survival testing results, August 16 - September 4, 1999.

initial 24-

dead stressed alive dead stressed alive

spottail shiner 379 96.4% 357 94. 393 90.gizzard shad 292 86.4% 239 81.8% 338 70.

rock bass 299 99. 298 99. 300 99.3 %

rainbow smelt 79.2 % 23. 18.8%.emerald shiner 91.3% 73. 67.4%

white perch 100. 100. 100.

smallmouth bass 94.4% 100. 94.4%

yellow perch 92. 100. 92.

alewife 25. 00/0 00/0

round goby 100. 100. 100.

white bass 100.00/0 83.3 % 83.3 %

bluegill 100. 100. 100.

largemouth bass 100. 100. 100.

stonecat

trout-perch 100.

log perch 100. 100. 100.

freshwater drum

Target species in bold total 1220

D _sumry.xls
Table 8. 11, 1999.

initial initial 24- 24- total total

species dead stressed alive survival dead stressed alive survival tested survival

emerald shiner 6002 98.80/0 5948 99. 1 % 6072 98.00/0gizzard shad "juvenile 1472 99.70/0 1456 98. 1477 98.rainbow smelt 458 96.8 % 359 78.4 % 473 75.90/0

spottail shiner 260 98.90/0 259 99.60/0 263 98.

yellow perch 176 98.90/0 176 100.00/0 178 98.90/0

rock bass 157 100. 157 100. 157 100.

white bass 145 98. 145 100.00/0 147 98.60/0

white perch 100.00/0 100. 100.

bluegill 100. 100. 100.

pumpkinseed 100. 100. 100.

gizzard shad "adult" 91.70 100.00/0 91.70/0

log perch 100. 1 00. 1 00.

goldfish 1 00. 100. 1 00.

bluntnose minnow 100. 83. 83.

smallmouth bass 83. 100. 83.stone cat 100. 100. 100.

channel catfish 100. 100. 100.

sculpin 100. 100. 100.

round goby 100. 100. 100.

brown bullhead 100. 100. 100.white sucker 100. 100. 100.

longnose dace 100. 100. 100.

rainbow trout 100. 100. 100.

carp 100. 100. 100.

brook silverside 100. 100. 100.

trout-perch 100. 100. 100.

largemouth bass 100. 100. 100.

freshwater drum

Target total 8928

D _sllmry.xls
Table 9. Comparison of 24-hr impingement survival rates (S) of target fish 

(1987 and 1990-1991) and after (1998-1999) installation of the prototype dual-flow traveling screen.

1990-1991 * 1998-1999

S (0/0) S (%)

alewife juvenile fall

spring 30. 260

summer

emerald shiner juv/adult winter 72. 96. 65- 130 98. 3738

spring 95. 2564

summer 42.4 67.3

fall 80. 88.4 60- 146 66. 88.4 251-3540 98. 6072

gizzard shad juvenile winter 26. 94. 1927

spring 64. 211

summer 70. 288

fall 48. 77. 135-235 16. 221 98. 1488

rainbow smelt juv/adult winter 58. 91.2 . 34-225 83. 614

spnng 53. 63. 318

summer 18.

fall 37. 58. 49- 148 22. 48. 995- 1835 75. 473

white bass juv/adult winter 81.2 100.

spring 51.1 100.

summer 54. 83.

fall 97. 85. 98. 147

white perch juv/adult winter 56.

spring 56. 100.

summer 56. 100.

fall 63. 665 100.

yellow perch juv/adult winter 100.

summer 92.

fall 93. 81.3 98. 178

* tests conducted August 1990-January 1991

N= sample size
......
Table ATable ATable AAPPENDIX A

LIST OF TABLES

Lengths of fish used in collection efficiency testing on December 2, 1998 at

Dunkirk Station.

Dunkirk Station screen collection efficiency testing results, December 2, 1999.

Lengths of marked catch efficiency test fish recovered from the debris trough

and flap seal at Dunkirk Station, December 2, 1999.
Table A-I. Lengths of 

on December 2, 1998 at 

Group Group Group

Individual Individual Individual

Fish Length Fish Length Fish Length

(mm) (mm) (mm)

152 115 132

120 136 110

124 127 123

132 115 115

115 128 120

118 110 124

104 133

118 122 118

130 100 118

116 112 130

135 107 133

110 119 114

125 121 133

122 126

104 135

116 125

115 120

118 117 118

115 186 120

130 110 117

118 110

115 121

110 108 112

125 107 135

135 134 116

Average 120. 113.4 122.

Minimum 104 110

Maximum 152 186 135

DSduncollEF .xIs
Table A-2. Dunkirk , December 2, 1999.

Inside Outside Trial Fish Time Time Number Number Percent Number Percent

Spray Spray Number Test Start Stop Released Recovered Recovered Recovered Recovered

Pressure Pressure Group From Fish From Fish From Debris From Fish &

( si) ( si) Trou h Trou h Trou h Debris Trou 

1305 1309

1311 13131330 1336

Total 960/0 100%

1315 13181320 1324

Total 860

;

100%

1353 1355

1357 1401

Total 94 % 1000/0

1405 1408

1413 1440

Total 820/0 980/0

1505 1507 1000/0 100%

1510 1514 92 % 100%

* 20 minute delay in the capture-of one of the fish from the debris trough.

** The last fish was found on the flap seal of the fish collection trough.

DSduncollEF.xls
Table A-3. Lengths of 

trough and flap seal at Dunkirk Station, December 2, 

inside spray pressure (psi)

outside spray pressure (psi)

trial number

test group

lengths (mm)

avera2e

DSduncoIlEF .xIs

117 118 114 127 135

102 115 121 73 114

116 117

112 106

116

107

110 117 117 100 125

120 I 

* fish not recovered for 20-30 minutes

nm = not measured
APPENDIX B

Length Frequency Data
Table B- 1 :

Table BTable BTable BTable BTable BTable BTable BTable BTable B-IO:

Table B-ll:

Table B- 12:

Table B- 13:

Table B- 14:

APPENDIX B 

LIST OF TABLES

Length frequency distribution for emerald shiner collected at Dunkirk Station

December 20- , 1998 and January 6- , 1999.

Length frequency distribution for juvenile gizzard 

Station, December 20- , 1998 and January 6- , 1999.

Length frequency distribution for adult gizzard shad collected at Dunkirk

Station, December 20- , 1998 and January 6- , 1999.

Length frequency distribution for rainbow smelt collected at Dunkirk Station

December 20- , 1998 and January 6- , 1999.

Length frequency distribution for spottail shiner collected at Dunkirk Station

December 20- , 1998 and January 6- , 1999.

Length frequency distribution for yellow perch collected at Dunkirk Station

December 20- , 1998 and January 6- , 1999.

Length frequency distribution for emerald shiner collected at Dunkirk Station

April 20- , 1999.

Length frequency distribution for rainbow smelt collected at Dunkirk Station

April 20- , 1999.

Length frequency distribution for alewife collected at Dunkirk Station

April 20- , 1999.

Length frequency distribution for juvenile 

Station, April 20- , 1999.

Length frequency distribution for spottail shiner collected at Dunkirk Station

April 20- , 1999.

Length frequency distribution for trout-perch collected at Dunkirk Station

April 20- , 1999.

Length frequency distribution for rainbow smelt collected at Dunkirk Station

August 16-September 3 , 1999.

Length frequency distribution for alewife collected at Dunkirk Station
Table B- 15:

Table B- 16:

Table B- 17:

Table B- 18:

Table B- 19:

Table B-20:

Table B-21:

Table B-22:

August 16-September 3 , 1999.

Length frequency distribution for white bass collected at Dunkirk Station

August 16-September 3 , 1999.

Length frequency distribution for emerald shiner collected at Dunkirk Station

November 2- , 1999.

Length frequency distribution for juvenile gizzard 

November 2- , 1999.

Length frequency distribution for rainbow smelt collected at Dunkirk Station

November 2- , 1999.

Length frequency distribution for spottaiI shiner collected at Dunkirk Station

November 2- , 1999.

Length frequency distribution for yellow perch collected at Dunkirk Station

November 2- , 1999.

Length frequency distribution for white bass collected at Dunkirk Station

November 2- , 1999.

Length frequency distribution for white perch collected at Dunkirk Station

November 2- , 1999. 
Table B-l. Length frequency 

Station, December 20-23, 19~8 and 9, 1999.

D legthfrq output.xIs

length

range

from 

101

106

111

116

121

126

131

136

141

146

151

156

161

166

171

176

181

186

191

196

201

206

211

216

221

100

105

110

115

120

125

130

135

140

145

150

155

160

165

170

175

180

185

190

195

200

205

210

215

220

225

:::-225

number

low (mm)

high (mm)

median (mm)

mean (mm)

ini tial test end

dead and dead and alive

stressed stressed

combined combined

195

114
Table B-2. Length frequency 

Dunkirk Station, December 20-23, 1998 and 1999.

length

range

from 

101

106

111

116

121

126

131

136

141

146

151

156

161

166

171

176

181

186

191

196

201

206

211

216

221

Dlegthfrqoutput.xls

100

105

110

115

120

125

130

135

140

145

150

155

160

165

170

175

180

185

190

195

200

205

210

215

220

225

:::-225

number

low (mm)

high (mm)

median (mm)

mean (mm)

initial test end

dead and dead and alive

stressed stressed

combined combined

6 -

. 2

169

158 178 192

127 100 135

128 108 131
Table B-3. Length frequency 

Dunkirk Station, December 20-23, 1998 and 1999.

length

range

from 

251

256

261

266

271

276

281

286

291

296

301

306

311

316

321

326

331

336

341

346

351

356

361

366

371

376

381

386

391

396

401

406

411

416

421

426

431

Dlegthfrqoutput.xls

250

255

260

265

270

275

280

285

290

295

300

305

310

315

320

325

330

335

340

345

350

355

360

365

370

375

380

385

390

395

400

405

410

415

420

425

430

435

)-435

number

low (mm)

high (mm)

median (mm)

mean (mm)

initial test end

dead and dead and alive

stressed stressed

combined combined

, 0

315

369

357

347

269

461

321

331
Table B-4. Length frequency 

Station, December 20-23, 1998 and 9, 1999.

length

range

from 

101

106

111

116

121

126

131

136

141

146

151

156

161

166

171

176

181

186

191

196

201

206

211

216

221

100

105

110

115

120

125

130

135

140

145

150

155

160

165

170

175

180

185

190

195

200

205

210

215

220

225

::::-225

number

low (mm)

high (mm)

median (mm)

mean (mm)

percentage offish 

Dlegthfrqoutput.x1s

initial test end

dead and dead and alive

stressed stressed

combined combined

. 0

176

134 147 147

101 115

100 111

62.1 % 49. 26.
Table B-5. Length frequency 

Station, December 20-23, 1998 and 9, 1999.

length

range

mm)

from 

101

106

111

116

121

126

131

136

141

146

151

156

161

166

171

176

181

186

191

196

201

206

211

216

221

Dlegthfrqoutput.xls

100

105

110

115

120

125

130

135

140

145

150

155

160

165

170

175

180

185

190

195

200

205

210

215

220

225

~225

number

low (mm)

high (mm)

median (mm)

mean (mm)

initial test end

dead and dead and alive

stressed stressed

combined combined

118

118

118

118.

100

107
Table B-6. Length frequency 

Station, December 20-23, 1998 and January 6-9, 1999.

length

range

from 

101

106

111

116

121

126

131

136

141

146

151

156

161

166

171

176

181

186

191

196

201

206

211

216

221

Dlegthfrqoutput.xls

100

105

110

115

120

125

130

135

140

145

150

155

160

165

170

175

180

185

190

195

200

205

210

215

220

225

~225

number

low (mm)

high (mm)

median (mm)

mean (mm)

initial test end

dead and dead and alive

stressed stressed

combined combined

119
Table B-7. Length frequency 

Station, April 20-28, 1999.

length

range

mm)

from 

101

106

111

116

121

126

131

136

141

146

151

156

161

166

171

176

181

186

191

196

201

206

211

216

221

Dlegthfrqoutput.xls

100

105

110

115

120

125

130

135

140

145

150

155

160

165

170

175

180

185

190

195

200

205

210

215

220

225

~225

number

low (mm)

high (mm)

median (mm)

mean (mm)

initial test end

dead and dead and alive

stressed stressed

combined combined

115

446

111
Table B-8. Length frequency 

Station, April 20-28, 1999.

length

range

from 

101

106

111

116

121

126

131

136

141

146

151

156

161

166

171

176

181

186

191

196

201

206

211

216

221

100

105

110

115

120

125

130

135

140

145

150

155

160

165

170

175

180

185

190

195

200

205

210

215

220

225

~225

number

low (mm)

high (mm)

median (mm)

mean (mm)

percentage offish 

Dlegthfrqoutput.xIs

initial test end

dead and dead and alive

stressed stressed

combined combined

152

132 135 140

85.3% 67. 63.
Table B-9. Length frequency 

Station, April 20-28, 1999.

length

range

mm)

from 

101

106

111

116

121

126

131

136

141

146

151

156

161

166

171

176

181

186

191

196

201

206

211

216

221

Dlegthfrqoutput.xls

100

105

110

115

120

125

130

135

140

145

150

155

160

165

170

175

180

185

190

195

200

205

210

215

220

225

:::-225

number

low (mm)

high (mm)

median (mm)

mean (mm)

initial test end

dead and dead and alive

stressed stressed

combined combined

140

100

197 185 210

136 126 129

136 128 131
Table B-10. Length frequency 

Station, April 20-28, 1999.

length

range

from 

101

106

111

116

121

126

131

136

141

146

151

156

161

166

171

176

181

186

191

196

201

206

211

216

221

Dlegthfrqoutput.xls

100

105

110

115

120

125

130

135

140

145

150

155

160

165

170

175

180

185

190

195

200

205

210

215

220

225

~225

number

low (mm)

high (mm)

median (mm)

mean (mm)

initial test end

dead and dead and alive

stressed stressed

combined combined

137

105

154 157 183

131 115 127

129 120 129
Table B-1!. Length frequency 

Station, April 20-28, 1999.

length

range

from 

101

106

111

116

121

126

131

136

141

146

151

156

161

166

171

176

181

186

191

196

201

206

211

216

221

DIe gthfrq output.xIs

100

105

110

115

120

125

130

135

140

145

150

155

160

165

170

175

180

185

190

195

200

205

210

215

220

225

;:.225

number

low (mm)

high (mm)

median (mm)

mean (mm)

initial test end

dead and dead and alive

stressed stressed

combined combined

130

125
Table B-12. Length frequency perch collected at Dunkirk

Station, April 20-28, 1999.

length

range

mm)

from 

101

106

111

116

121

126

131

136

141

146

151

156

161

166

171

176

181

186

191

196

201

206

211

216

221

DIe gthfrqoutput. xls

100

105

110

115

120

125

130

135

140

145

150

155

160

165

170

175

180

185

190

195

200

205

210

215

220

225

)-225

number

low (mm)

high (mm)

median (mm)

mean (mm)

initial test end

dead and dead and alive

stressed stressed

combined combined

108 129
Table B-13. Length frequency 

Station, August 16 - September 4 1999.

length

range

from 

101

106

111

116

121

126

131

136

141

146

151

156

161

166

171

176

181

186

191

196

201

206

211

216

221

100

105

110

115

120

125

130

135

140

145

150

155

160

165

170

175

180

185

190

195

200

205

210

215

220

225

~225

number

low (mm)

high (mm)

median (mm)

mean (mm)

percentage of fish 

Dlegthfrqoutput.x.ls

initial test end

dead and dead and alive

stressed stressed

combined combined

100. 100. 100.
Table B-14. Length frequency 

Station, August 16 - September 4, 1999.

length

range

(mm)

from 

101

106

111

116

121

126

131

136

141

146

151

156

161

166

171

176

181

186

191

196

201

206

211

216

221

Dlegthfrqoutput.xls

100

105

110

115

120

125

130

135

140

145

150

155

160

165

170

175

180

185

190

195

200

205

210

215

220

225

:::-225

number

low (mm)

high (mm)

median (mm)

mean (mm)

initial test end

dead and dead and alive

stressed stressed

combined combined

162
Table B-15. Length frequency 

Station, August 16 - September 4, 1999.

length

range

mm)

from 

101

106

111

116

121

126

131

136

141

146

151

156

161

166

171

176

181

186

191

196

201

206

211

216

221

Dlegthfrq OUtpUt.xIs

100

105

110

115

120

125

130

135

140

145

150

155

160

165

170

175

180

185

190

195

200

205

210

215

220

225

~225

number

low (mm)

high (mm)

median (mm)

mean (mm)

initial test end

dead and dead and alive

stressed stressed

combined combined

103
legthfi-qoutput.xls

Table B-16. Length freqnency 

Station, November 2-11, 1999.

101

106

111

116

121

126

131

136

141

146

151

156

161

166

171

176

181

186

191

196

201

206

211

216

221

length

range

from 

100

105

110

115

120

125

130

135

140

145

150

155

160

165

170

175

180

185

190

195

200

205

210

215

220

225

;:.225

number

low (mm)

high (mm)

median (mm)

mean (mm)

initial

test end

dead and dead and

alive

stressed stressed

combined combined

232
Table B-17. Length frequency 

Station, November 2-11, 1999.

length

range

from 

101

106

111

116

121

126

131

136

141

146

151

156

161

166

171

176

181

186

191

196

201

206

211

216

221

Dlegthfrqoutput.xls

70-

100

105

110

115

120

125

130

135

140

145

150

155

160

165

170

175

180

185

190

195

200

205

210

215

220

225

:::-225

number

low (mm)

high (mm)

median (mm)

mean (mm)

initial test end

dead and dead and alive

stressed stressed

combined combined

222

100 152 182

103
Table B-18. Length frequency 

Station, November 2-11, 1999.

length

range

mm)

from 

251

256

261

266

271

276

281

286

291

296

301

306

311

316

321

326

331

336

341

346

351

356

361

366

371

376

381

386

391

396

401

406

411

416

421

426

431

Dlegthfrqoutput.xls

250

255

260

265

270

275

280

285

290

295

300

305

310

315

320

325.

330

335

340

345

350

355

360

365

370

375

380

385

390

395

400

405

410

415

420

425

430

435

~435

number

low (mm)

high (mm)

median (mm)

mean (mm)

initial test end

dead and dead and alive

stressed stressed

combined combined

387

387

387

387

214

284

235

241
Table B-19. Length frequency 

Station, November 2-11, 1999.

length

range

from 

101

106

111

116

121

126

131

136

141

146

151

156

161

166

171

176

181

186

191

196

201

206

211

216

221

100

105

110

115

120

125

130

135

140

145

150

155

160

165

170

175

180

185

190

195

200

205

210

215

220

225

~225

number

low (mm)

high (mm)

median (mm)

mean (mm)

percentage offish 

D Iegthfrq output.xIs

initial test end

dead and dead and alive

stressed stressed

combined combined

131

148 140 175

105 104 113

107 104 113

33.3% 39.4% 12.
Table B-20. Length 

Station, November 2-11, 1999.

length

range

from 

101

106

111

116

121

126

131

136

141

146

151

156

161

166

171

176

181

186

191

196

201

206

211

216

221

D legthfrq output.xls

100

105

110

115

120

125

130

135

140

145

150

155

160

165

170

175

180

185

190

195

200

205

210

215

220

225

:::-225

number

low (mm)

high (mm)

median (mm)

mean (mm)

initial test end

dead and dead and alive

stressed stressed

combined combined

160

105 109
Table B-2!. Length frequency 

Station, November 2-11, 1999.

Dlegthfrqoutput.xls

length

range

from 

101

106

111

116

121

126

131

136

141

146

151

156

161

166

171

176

181

186

191

196

201

206

211

216

221

100

105

110

115

120

125

130

135

140

145

150

155

160

165

170

175

180

185

190

195

200

205

210

215

220

225

:::-225

number

low (mm)

high (mm)

median (mm)

mean (mm)

initial test end

dead and dead and alive

stressed stressed

combined combined

145

212
Table B-22. Length frequency 

Station, November 2-11, 1999.

length

range

from 

101

106

111

116

121

126

131

136

141

146

151

156

161

166

171

176

181

186

191

196

201

206

211

216

221

Dlegthfrqoutput.xls

100

105

110

115

120

125

130

135

140

145

150

155

160

165

170

175

180

185

190

195

200

205

210

215

220

225

~225

number

low (mm)

high (mm)

median (mm)

mean (mm)

initial test end

dead and dead and alive

stressed stressed

combined combined

0 .

96.

96.

144

156

110

112
APPENDIX C

Water Quality and

Plant .Operational Data
Table CTable CTable CTable CTable CTable CTable CTable CAPPENDIX C

LIST OF TABLES

Water quality and plant operational data during impingement survival testing at

Dunkirk Station, December 20- , 1998 and January 6- , 1999.

Water quality data for extended survival holding tanks during impingement

survival testing at Dunkirk Station, December 20- , 1998 and

January 6- , 1999.

Water quality and plant operational data during impingement survival testing at

Dunkirk Station, April 20- , 1999.

Water quality data for extended survival holding tanks during impingement

survival testing at Dunkirk Station, April 20- , 1999.

Water quality and plant operational data during impingement survival testing

at Dunkirk Station, August 16-September 3 , 1999.

Water quality data for extended survival holding tanks during impingement

survival testing at Dunkirk Station, August 16-September 3 , 1999.

Water quality and plant operational data during impingement survival testing

at Dunkirk Station, November 2- , 1999.

Water quality data for extended survival holding tanks during impingement

survival testing at Dunkirk Station, November 2- , 1999.
Table C- Water quality and plant operational data during impingement survival testing 

Dunkirk Station, December 20-23, 1998 and 9, 1999.

dissolved cond- number number water screen

oxygen uctivity of circ. of serv. elev. speed

location date time temp o mg/L ~cm pumps pumps feet fps

Intake 20-Dec- 445 not taken not taken 190 569

Intake 20-Dec- 810 not taken not taken 195 569

Intake 21-Dec- 115 12.4 195 569

Intake 21-Dec- 445 12.4 190 569

Intake 21-Dec- 800 12. 180 569

Intake 22-Dec- 11.3 195 569

Intake 22-Dec- 405 11.6 200 569

Intake 22-Dec- 758 11.8 180 569

Intake 23-Dec- 12.4 175 569

Intake 23-Dec- 415 13. 160 569

Intake 23-Dec- 820 12. 160 569

Intake Jan- 220 14. 180 569.

Intake Jan- 610 15. 150 569.

Intake Jan- 815 15.3 7.4 150 569.5

Intake Jan- 13. 7.4 155 569.5

Intake Jan- 518 14. 150 569.

Intake Jan- 730 13. 7.4 170 569.

Intake Jan- 13.4 7.4 160 569

Intake Jan- 430 15.1 7.4 150 569

Intake Jan- 800 14. 7.3 150 569

Intake Jan- 100 12. 160 568.5

Intake Jan- 430 13. 160 568.

Intake Jan- 745 12. not taken 170 568.

Dwqtables.x1s
Table C- Water quality data for extended survival holding tanks during

impingement survival testing at Dunkirk Station,

December 20-23, 1998 and 9, 1999.

dissolved

oxygen

location date time temp o mg/L

Tank 14 20-Dec- 458 not taken

Tank 20-Dec- 735 not taken

Tank 13 20-Dec- 1140 not taken

Tank 20-Dec- 1315 not taken not taken

Tank 3 21-Dec- 120 12.

Tank 14 21-Dec- 335 12.3

Tank 12 21-Dec- 715 12.4

Tank 10 21-Dec- 1050 12.1

Tank 12 21-Dec- 1530 11.3

Tank 8 22-Dec- 11.1

Tank 14 22-Dec- 400 11.2

Tank 10 22-Dec- 755 12.

Tank 16 22-Dec- 1130 11.4

Tank 9 22-Dec- 1500 12.

Tank 23-Dec- 12.

Tank 11 23-Dec- 420

Tank 16 23-Dec- 1100 13.5

Tank 3 23-Dec- 1500 12.

Tank 5 24-Dec- 500 13.

Tank 12 24-Dec- 700 12.

Tank 3 Jan- 240 13.

Tank 6 Jan- 600 13.5

Tank Jan- 1125 12.

Tank 12 Jan- 1430 13.

Tank 5 JanTank 12 Jan- 520

Tank 3 Jan- 1030 12.

Tank 12 Jan- 1430 12.

Tank 10 Jan- 11.5

Tank 3 Jan- 315 11.3

Tank 12 Jan- 440 12.

Tank 16 Jan- 1130 13.

Tank 9 Jan- 115

Tank 3 Jan- 445 12.

Tank 16 Jan- 755 13.

Tank 16 I1-Jan- 1215 12.3

Dwqtables.xls
Table C- Water quality and plant operational data during impingement survival 

Dunkirk Station, April 20-28, 1999.

dissolved cond- number number water screen

oxygen uctivity of circ. of servo elev. speed

location date time temp o mgIL ~mIcm pumps pumps feet fps

Intake 21-Apr- 100 11.6 170 569.5

Intake 21-Apr- 215 12. 180 569.

Intake 21-Apr- 700 12.3 180 not taken not taken not taken not taken

Intake 21-Apr- 2215 11.3 190 569.

Intake 22-Apr- 135 12. 190 569.

Intake 22-Apr- 615 12. 190 569.

Intake 22-Apr- 2230 10.4 not taken 200 . 4 569.

Intake 23-Apr- 225 10. not taken 190 569.

Intake 23-Apr- 555 11.8 not taken 190 569.5

Intake 23-Apr- 2220 12. 180 569.

Intake 24-Apr- 245 12. 180 569.

Intake 24-Apr- 605 11.9 not taken 200 569.

Intake 24-Apr- 2155 10. 6.4 170 569.

Intake 25-Apr- 200 12. 180 569.

Intake 25-Apr- 551 11.5 170 569.

Intake 25-Apr- 2202 12. 180 569.

Intake 26-Apr- 157 12.4 7.4 170 569.

Intake 26-Apr- 549 12.4 175 569.

Intake 26-Apr- 2202 11.5 185 569.

Intake 27-Apr- 200 11.2 not taken 180 569.

Intake 27-Apr- 554 11.4 not t(j.ken 180 569.

Intake 27-Apr- 2205 11.6 not taken 220 569

Intake 28-Apr- 200 12. not taken 190 569

Intake 28-Apr- 540 12. not taken 180 569

Dwqtables.xls
Table C- Water quality data for 

impingement survival testing at Dunkirk Station,

April 20-28, 1999.

dissolved

oxygen

location date time temp D mg/L

Tank 8 21-Apr- 11.5

Tank 7 21-Apr- 220 12.

Tank 9 21-Apr- 615 12.4

Tank 10 21-Apr- 1200 12.4

Tank 9 21-Apr- 2220 11.3

Tank 7 22-Apr- 135 12.

Tank 12 22-Apr- 1130 12.4

Tank 3 22-Apr- 2230 13. 10.

Tank 3 23-Apr- 230 10.

Tank 8 23-Apr- 615 10.4

Tank 7 23-Apr- 1155 11.0

Tank 9 23-Apr- 2230 12.

Tank 8 24-Apr- 200 12.

Tank 7 24-Apr- 250 12.4

Tank 10 24-Apr- 1000 12.

Tank 8 24-Apr- 2155 11.8

Tank 10 25-Apr- 200 12.

Tank 7 25-Apr- 551 12.

Tank 9 25-Apr- 1000 135

Tank 8 25-Apr- 1300 13.

Tank 10 25-Apr- 2205 11.9

Tank 8 26-Apr- 157 12.4

Tank 7 26-Apr- 549 10.

Tank 9 26-Apr- 1000 13.

Tank 10 26-Apr- 1330 13.2

Tank 10 26-Apr- 2202 10.

Tank 8 27-Apr- 200 11.5

Tank 7 27-Apr- 554 10.

Tank 9 27-Apr- 1000 12.4

Tank 10 27-Apr- 1330 11.5

Tank 10 27-Apr- 2215 11.6

Tank 9 28-Apr- 205 12.

Tank 7 28-Apr- 545 12.3

Tank 8 28-Apr- 930 12.1

Tank 7 28-Apr- 1200 12.

Tank 10 29-Apr

:.

138 12.

Tank 8 29-Apr- 320 11.1

Tank 7 29-Apr- 518 11.4

Dwqtables.xls
Table C- Water quality and plant operational data during impingement 

Dunkirk Station, August 16 - September 4, 1999.

dissolved cond- number number water screen

oxygen uctivity of circ. of servo elev. speed

location date time temp o mgIL ~cm pumps pumps feet fps

Intake 16-Aug- 2120 250 568.

Intake 17-Aug- 110 260 568.

Intake 17-Aug- 447 8.3 260 568.

Intake 18-Aug- 2125 250 568.

Intake 18-Aug- 150 23.5 250 568.

Intake 18-Aug- 2056 268 568.3

Intake 19-Aug- 260 568.3

Intake 19-Aug- 421 259 568.

Intake 19-Aug- 2111 9.4 261 568.3

Intake 20-Aug- 111 258 568.3

Intake 20-Aug- 420 252 568.

Intake 30-Aug- 2110 8.2 245 567.4

Intake 31-Aug- 120 20. 9.2 240 567.

Intake 31-Aug- 455 8.1 240 567

Intake 31-Aug- 2115 240 567.4

Intake 01-Sep- 100 8.3 230 567.4

Intake 01-Sep- 430 20.5 8.1 240 567.4

Intake 01-Sep- 2115 240 567.

Intake 02-Sep- 128 240 567.

Intake 02-Sep- 446 245 567.

Intake 02-Sep- 2115 290 567.

Intake 03-Sep- 129 9.1 249 567.

Intake 03-Sep- 528 250 567.

Dwqtables.xls
Table C- Water quality data for extended survival 

impingement survival testing at Dunkirk Station,

August 16 - September 4, 1999.

dissolved

oxygen

location date time temp o mg/L

Tank 8 16-Aug- 2125

Tank 8 17-Aug- 115 9.4

Tank 10 17-Aug- 445 9.4

Tank 7 17-Aug~99 900

Tank 9 17-Aug- 1300

Tank 8 17-Aug- 2130

Tank 12 18-Aug- 155 25.5

Tank 11 18-Aug- 900 8.5

Tank 9 18-Aug- 1300

Tank 9 18-Aug- 2056

Tank 7 19-AugTank 11 19-Aug- 423

Tank 9 19-Aug- 823 9.3

Tank 12 19-Aug- 1223

Tank 9 19-Aug- 2113 9.3

Tank 12 20-Aug- 114

Tank 8 20-Aug- 425

Tank 12 20-Aug- 825

Tank 10 20-Aug- 1225

Tank 9 20-Aug- 23 ~9

Tank 7 21-Aug- 132

Tank 9 30-Aug- 2115

Tank 7 31-Aug- 125 21.5

Tank 12 31-Aug- 505 9.4

Tank 9 31-Aug- 750

Tank 8 31-Aug- 905 9.1

Tank 7 31-Aug- 1300 9.1

Tank 9 31-Aug- 2120

Tank 7 01-Sep- 105

Tank 11 01-Sep- 440 21.5

Tank 9 01-Sep- 840 9.1

Tank 12 01-Sep- 1240 not taken

Tank 9 01-Sep- 2120

Tank 7 02-Sep- 130 10.

Tank 11 02-Sep- 448

Tank 9 02-Sep- 848 9.4

Tank 12 02-Sep- 1245

Tank 8 02-Sep- 2120

Tank 12 03-Sep- 129

Tank 13 03-Sep- 528 9.5

Tank 12 03-Sep- 900

Tank 15 03-Sep- 1230

Tank 11 03-Sep- 2255

Tank 12 04-Sep- 118 10.

Tank 12 04-Sep- 423

Dwqtables.xls
Table C- Water quality and plant operational data during impingement survival 

Dunkirk Station, November 2-11, 1999.

dissolved cond- number number water screen

oxygen uctivity of circ. of servo elev. speed

location date time temp o mg/L ~cm pumps pumps feet fps

Intake 02-Nov- 2210 12.5 11.0 198 569.

Intake 03-Nov- 138 12. 11.0 200 570.1

Intake 03-Nov- 421 12. 10. 7.5 191 570.4

Intake 03-Nov- 2120 11.0 11.6 181 570.

Intake 04-Nov- 107 10. 11.6 200 570.

Intake 04-Nov- 437 10. 11.6 187 570.

Intake 04-Nov- 2111 10. 12. 199 569.

Intake 05-Nov- 142 11.0 11.8 191 569.

Intake 05-Nov- 414 10. 11.4 192 569.

Intake 05-Nov- 2101 12. 7.3 185 569.

Intake 06-Nov- 122 12. 7.3 190 569.

Intake 06-Nov- 600 10. 11.5 205 not taken not taken not taken not taken

Intake 06-Nov- 2110 13. 11'.1 222 569.

Intake 07-Nov- 110 13. 10. 7.4 212 569.

Intake 07-Nov- 449 12. 11.0 7.4 215 569.

Intake 07-Nov- 2103 10. 11.3 200 569.

Intake 08-Nov- 108 11.0 11.2 205 569.4

Intake 08-Nov- 446 10. 11.0 200 569.

Intake 08-Nov- 2112 11. 11.2 7.5 212 569.1

Intake 09-Nov- 11.0 11.4 7.5 202 569.

Intake 09-Nov- 453 11.0 11.2 200 569.1

Intake 09-Nov- 2113 11.5 11.3 7.5 204 569.

Intake 10-Nov- 12. 11.0 7.5 193 569

Intake 10-Nov- 417 12. 11.0 202 568.

Dwqtables.x1s
Table C- Water quality data for extended 

impingement survival testing at Dunkirk Station,

November 2-11, 1999.

dissolved

oxygen

location date time temp o mg/L

Tank 4 02-Nov- 2210 13. 11.2

Tank 2 03-Nov- 138 13. 11.0

Tank 1 03-Nov- 431 13. 10.

Tank 6 03-Nov- 830 13. 11.4

Tank 2 03-Nov- 1215 13. 11.2

Tank 4 03-Nov- 2120 12. 11.7

Tank 5 04-Nov- 107 12. 11.5

Tank 7 04-Nov- 437 11.5 11.6

Tank 3 04-Nov- 837 11.0 12.

Tank 04-Nov- 1215 11.0 12.

Tank 4 05-Nov- 2116 12.

Tank 5 05-Nov- 142 11.0 11.6

Tank 6 05-Nov- 414 11.0 11.5

Tank 05-Nov- 814 10. 12.

Tank 5 05-Nov- 1115 12.1

Tank 6 05-Nov- 2101 12.1

Tank 3 06-Nov- 122 12.1

Tank 4 06-Nov- 600 10. 11.5

Tank 2 06-Nov- 1030 11.5 11.5

Tank 7 06-Nov- 2110 13. 11.2

Tank 07-Nov- 1 't 0 13. 10.

Tank 4 07-Nov- 449 13. 10.

Tank 6 07-Nov- 849 12. 11.4

Tank 8 07-Nov- 1200 12. 11.1

Tank 3 07-Nov- 2103 10. 12.

Tank 5 08-Nov- 108 12. 11.2

Tank 8 08-Nov- 446 11.0 11.1

Tank 6 08-Nov- 846 11.0 11.4

Tank 11 08-Nov- 1230 10. 11.4

Tank 08-Nov- 2112 11.0 11.4

Tank 4 09-Nov- 11.0 11.4

Tank 6 09-Nov- 453 11.0 11.2

Tank 2 09-Nov- 853 10. 11.3

Tank 10 09-Nov- 1230 10. 11.4

Tank 3 09-Nov- 2113 11.5 11.4

Tank 8 10-Nov- 12. 11.2

Tank 7 10-Nov- 417 12. 10.

Tank 7 10-Nov- 817 12. 11.4

Tank 11 10-Nov- 1230 12. 10.

Dwqtables.xls