Post- Impingement Fish Survival Dunkirk Winter , Spring, Summer , and Fall 1998- 1999 Prepared for NRG by Beak Consultants IncorporatedPost- 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' Analytical Procedures 2.4 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

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LIST OF FIGURES Collection apparatus as set up at Dunkirk StationTable 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 NRG Dunkirk Power LLC January 26, 2000

Beak Consultants Incorporated File:dunkirk - 4season fma1.docto 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. NRG Dunkirk Power LLC January 26 2000

Beak Consultants Incorporated File:dunkirk- 4season fmal.doc0 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). NRG Dunkirk Power LLC January 26 , 2000

Beak Consultants Incorporated File:dunkirk- 4season final.docTest 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 NRG Dunkirk Power LLC Beak Consultants Incorporated January 26 , 2000 File:dunkirk- 4season fmal.docthree 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. NRG Dunkirk Power LLC January 26 , 2000

Beak Consultants Incorporated File:dunkirk- 4season fmal. docEach 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. NRG Dunkirk Power LLC January 26 , 2000

Beak Consultants Incorporated File:dunkirk- 4season fmal.docDead - 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 D C). 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 NRG Dunkirk Power LLC January 26 , 2000

Beak Consultants Incorporated File:dunkirk- 4season final.doc"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 # -:3

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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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Beak Consultants Incorporated File: dunkirk- 4season - fma1.doc ..J0 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. NRG Dunkirk Power LLC January 26 , 2000

Beak Consultants Incorporated File:dunkirk- 4season finaLEmerald 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). NRG Dunkirk Power LLC January 26 , 2000

Beak Consultants Incorporated File:dunkirk- 4season final.docSpottail 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. NRG Dunkirk Power LLC January 26 , 2000

Beak Consultants Incorporated File: dunkirk - 4season fmal.docRainbow 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 % NRG Dunkirk Power LLC January 26 2000

Beak Consultants Incorporated File: dunkirk - 4season final. docAdditional 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 O C) than in the winter (0- 12 O C) or spring (7- 16 O C), or to the smaller size and more fragile condition of the young-of- the- year fish in the summer. NRG Dunkirk Power LLC January 26 2000

Beak Consultants Incorporated File:dunkirk- 4season - final. docAll 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 O C) than in the spring (7- 16 O C), 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. NRG Dunkirk Power LLC January 26 2000

Beak Consultants Incorporated File:dunkirk- 4season fmal.docEmerald 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). NRG Dunkirk Power LLC January 26 , 2000

Beak Consultants Incorporated File:dunkirk- 4season final.docMore 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 o C (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 NRG Dunkirk Power LLC January 26 , 2000

Beak Consultants Incorporated File: dunkirk - 4season _ final. doc(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 o c (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 o c (Appendix Table C- 5). During 11 testing, intake water ranged from 9. 0 o c to 13. 0 o c (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 o c 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). NRG Dunkirk Power LLC January 26 , 2000

Beak: Consultants Incorporated File:dunkirk - 4season - fmal. doc0 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 NRG Dunkirk Power LLC January 26 2000

Beak Consultants Incorporated File:dunkirk-4season - final. docWe 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. NRG Dunkirk Power LLC January 26 , 2000

Beak Consultants Incorporated File:dunkirk -4season - fina1.docDISCUSSION 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 NRG Dunkirk Power LLC January 26 , 2000

Beak Consultants Incorporated File:dunkirk- 4season - fmal.docfish 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.docfor 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.docLITERATURE 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.docScreen # 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- 230Table 1. Continued. two 7/6 30 113 m 428 9000 m hydrostaltic pum 26" J.D. 1500' 6' / secTable 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 . xIsTable 3., 1998.initialinitial24-24-totaltotaltestdeadstressedalivesurvivaldeadstressedalivesurvivaltestedsurvivalhandling controls100.100.00/0100.holding controls100.00/098.98.D _SUll1ry.xlsTable 4.Dunkirk Station inlpingement survival testing results, December 20-23, 1998 and9, 1999.initial24-deadstressedalivedeadstressedaliveemerald shiner369398.8 %366999.40/0373898.2 %gizzard shad "juvenile187397.2 %182597.4 %192794.rainbow smelt58595.3 %51187.40/061483.2 %spottail shiner297100.00/029699.29799.70/0gizzard shad "adult"96.80/095.60/092.yellow perch100.100.100.00/0rock bass91. 7%100.91. 7%trout-perch62.100.62.bluegill100.100.100.white bass100.00/0100.00/0100.00/0freshwater drum100.00/0100.00/0100.shorthead redhorse100.100.100.largemouth bass100.100.100.sculpin100.100.100.target species in boldtotal6775sumry.xlsTable 5.Dunkirk Station impingement survival results for "juvenile" and "adult" rainbow smelt,December 20-23, 1998 and9, 1999.initial24-deadstressedalivedeadstressedaliverainbow smelt (all)58595.51187.4 %61483.2 %estimated18.169.90.40/032.133.478.50/0187.71.0%estimated ~ 100mm11.0415.97.4%33.377.91.0%426.88.60/0D _sumry.xlsTable 6.Dunkirk Station impingement survival testing results, April 20-28, 1999.initial24-deadstressedalivedeadstressedaliveemerald shiner252598.50/0243696.5 %256495.rainbow smelt28489.3 %20170.80/031863.alewife21783.12935.90/026030.00/0gizzard shad "juvenile20094.13768.21164.spottail shiner13199.2 %13099.2 %13298.trout-perch100.00/094.1 %94.1 %rock bass100.100.100.rainbow trout100.100.100.white perch100.00/0100.00/0100.00/0sculpin100.100.100.round goby100.100.100.johnny darter100.100.100.gizzard shad "adult"66.100.66.white bass100.00/0100.00/0100.00/0freshwater drum00/000/000/0quilback sucker100.yellow perch100.100.100.black crappie100.100.100.fathead minnow100.100.100.bluntnose minnow100.100.100.bluegill100.100.100.Target species intotal3562D _sumry.xlsTable 7.Dunkirk Station impingement survival testing results, August 16 - September 4, 1999.initial24-deadstressedalivedeadstressedalivespottail shiner37996.4%35794.39390.gizzard shad29286.4%23981.8%33870.rock bass29999.29899.30099.3 %rainbow smelt79.2 %23.18.8%.emerald shiner91.3%73.67.4%white perch100.100.100.smallmouth bass94.4%100.94.4%yellow perch92.100.92.alewife25.00/000/0round goby100.100.100.white bass100.00/083.3 %83.3 %bluegill100.100.100.largemouth bass100.100.100.stonecattrout-perch100.log perch100.100.100.freshwater drumTarget species in boldtotal1220D _sumry.xlsTable 8.11, 1999.initialinitial24-24-totaltotalspeciesdeadstressedalivesurvivaldeadstressedalivesurvivaltestedsurvivalemerald shiner600298.80/0594899.1 %607298.00/0gizzard shad "juvenile147299.70/0145698.147798.rainbow smelt45896.8 %35978.4 %47375.90/0spottail shiner26098.90/025999.60/026398.yellow perch17698.90/0176100.00/017898.90/0rock bass157100.157100.157100.white bass14598.145100.00/014798.60/0white perch100.00/0100.100.bluegill100.100.100.pumpkinseed100.100.100.gizzard shad "adult"91.70100.00/091.70/0log perch100.1 00.1 00.goldfish1 00.100.1 00.bluntnose minnow100.83.83.smallmouth bass83.100.83.stone cat100.100.100.channel catfish100.100.100.sculpin100.100.100.round goby100.100.100.brown bullhead100.100.100.white sucker100.100.100.longnose dace100.100.100.rainbow trout100.100.100.carp100.100.100.brook silverside100.100.100.trout-perch100.100.100.largemouth bass100.100.100.freshwater drum- - -Targettotal8928D _sllmry.xlsTable 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 *1998-1999S (0/0)S (%)alewifejuvenilefallspring30.260summeremerald shinerjuv/adultwinter72.96.65-13098.3738spring95.2564summer42.467.3fall80.88.460-14666.88.4251-354098.6072gizzard shadjuvenilewinter26.94.1927spring64.211summer70.288fall48.77.135-23516.22198.1488rainbow smeltjuv/adultwinter58.91.2 .34-22583.614spnng53.63.318summer18.fall37.58.49-14822.48.995-183575.473white bassjuv/adultwinter81.2100.spring51.1100.summer54.83.fall97.85.98.147white perchjuv/adultwinter56.spring56.100.summer56.100.fall63.665100.yellow perchjuv/adultwinter100.summer92.fall93.81.398.178* tests conducted August 1990-January 1991N= 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 . xIsTable A-2. Dunkirk, December 2, 1999.InsideOutsideTrialFishTimeTimeNumberNumberPercentNumberPercentSpraySprayNumberTestStartStopReleasedRecoveredRecoveredRecoveredRecoveredPressure PressureGroupFrom FishFrom FishFrom DebrisFrom Fish &( si)( si)Trou hTrou hTrou hDebris Trou130513091311131313301336Total960/0100%1315131813201324Total860';"100%1353135513571401Total94 %1000/01405140814131440Total820/0980/0150515071000/0100%1510151492 %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.xlsTable 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 measuredAPPENDIX B Length Frequency DataTable 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 StationTable 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 114Table 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 131Table 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 331Table 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 107Table 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 119Table 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 111Table 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 131Table 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 129Table 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 125Table 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 129Table 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 162Table 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 103legthfi-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 232Table 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 103Table 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 241Table 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 109Table 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 212Table 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 112APPENDIX C Water Quality and Plant . Operational DataTable 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. x1sTable 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. xlsTable 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. xlsTable 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. xlsTable 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. xlsTable 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. xlsTable 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. x1sTable 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