ML20213A649

1986 Annual Environ Rept,Nonradiological

ML20213A649
Person / Time
Site:	Beaver Valley
Issue date:	12/31/1986
From:	Mcintire J, Shema R, Sieber J AQUATIC SYSTEMS CORP., DUQUESNE LIGHT CO.
To:	NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM)
References
NUDOCS 8704280135
Download: ML20213A649 (167)

Text

{{#Wiki_filter:l l 1986 ANNUAL ENVIRONMENTAL REPORT NON-RADIOLOGICAL j DUQUESNE LIGHT COMPANY BEAVER VALLEY POWER STATION UNITS NO. 1& 2 1 A i l 8704200135 %2231 PDR l R ggggg 05000334 PDR

1986 ANNUAL ElWIHOIGEElffnL REPORT NRADIOfAGICAL DUQUESNE LIGIFF CGEPANY BEAVER VALLEY POOMR STATION UNITS NO. 1&2 Prep.7ted by: Robert Louis Shema William R. Cody Gary J. Kenderes Aquatic Systems Corporation Pittsburgh, Pennsylvania and Patrick S. Bonislawsky Baker /TSA, Inc. Coraopolis, Pennsylvania and J. Wayne McIntire Duquesne Light Company Shippingport, Pennsylvania I

=. TABLE OF CONTENTS Page i LIST OF FIGURES.............................................. iv LIST OF TABLES............................................... vi LI ST O F EX HI B I TS............................................. x I. INTRODUCTI O N................................................. 1 J A. SCOPE AND OBJECTIVES OF THE PROGRAM...................... 1 B. SITE DESCRIPTION......................................... 1 II.

SUMMARY

AND CONCLUSIONS...................................... 7 III. ANALYSIS OF SIGNIFICANT ENVIRONMENTAL CHANGE................. 13 1 IV. MONITORING NON-RADIOLOGICAL EFFLUENTS........................ 14 l A. MONITORING CHEMICAL EFFLUENTS............................ 14 B. HERBICIDES............................................... 14 V. AQUATIC MONITORING PROGRAM................................... 15 A. INTRODUCTION............................................. 15 t B. BENTHOS.................................................. 18 O b j ec t i ve s........................................... 18 i Methods.............................................. 18 Habitats............................................. 18 Community Structure and Spatial Distribution......... 25 Comparison of Control and Non-Control Stations........................................... 25 j Comparison of Preoperational and Operational Data............................................... 30 i S umma ry and Co nclus ions.............................. 33 C. PHYTO PLA NKTO N............................................ 34 Objectives........................................... 34 I Methods.............................................. 34 Sea sonal Dis t r ibu tion................................ 34 ) Comparison of Control and Non-Control Trancects.......................................... 42 Comparison of Preoperational and Operational Data............................................... 42 S umma ry a nd Co nc lu s io ns.............................. 45 i I 1 i i I i i 1 1 t i i .m- , -, - - - - - ~,.,, -, -. - -., - - -,.

I 2 i TABLE OF CONTENTS (Continued) Page D. ZOOPLANKTON.............................................. 46 Objectives........................................... 46 Methods.............................................. 46 Seasonal Distribution................................ 46 Comparison of Control and Non-Control Transects.......................................... 55 Comparison of Preoperational and Operational Data............................................... 57 S umma ry a nd Conclus ions.............................. 60 E. FISH 61 Ob j ec t i ve............................................ 61 Methods.............................................. 61 Results.............................................. 63 Comparison of Control and Non-Control Transects.......................................... 70 Comparison of Preoperational and Operational Data............................................... 70 S umma ry and Conclus ions.............................. 75 I F. ICHTHYOPLANKTON.......................................... 77 l Objective............................................ 77 Methods.............................................. 77 j Results.............................................. 77 i Comparison of Preoperational and Operational i Data............................................... 83 Summary and Conclusions.............................. 83 G. FISH IMPINGEMENT......................................... 85 O b j ec t i v e............................................ 85 Methods.............................................. 85 Results.............................................. 85 Comparison of Impinged and River Fish................ 93 Comparison of Operating and Non-Operating Intake Bay Collections............................. 93 S umma ry a nd Conclus ions.............................. 101 H. PLANK 7DN ENTRAINMENT..................................... 102 1. Ichthyop1ankton...................................... 102 Objectives........................................... 102 Methods.............................................. 102 Results.............................................. 102 l Sea sonal D is tr ibution................................ 107 Spa t ial D i s t r ibut ion................................. 107 i S umma r y a nd Co nc lu s ions.............................. 107 4 4 11 .r. _. _ - --... _. - _, __,~__,,,,_y

TABLE OF CONTENTS (Continued) Page 2. Phytoplankton........................................ 108 Objectives........................................... 108 Methods.............................................. 108 Comparison of Entrainment and River Samples.......... 108 Summary and Conclusions.............................. 109 8 3. Zooplankton.......................................... 109 Ob j ec t i ve s........................................... 109 Methods.............................................. 109 Comparison of Entrainment and River Samples.......... 109 S umma ry and Conclus ions.............................. 110 } 1 i I. Corbicula MONITORING PROGRAM............................. 111 Introduction......................................... 111 Ob j ec t i ve s........................................... 111 ] Me th od s.............................................. 113 Results.............................................. 116 S umma ry a nd Co nc lu s io n s.............................. 121 i 1 4 VI. TERRESTRIAL MONITORING PROGRAM............................... 126 A. INTRODUCTION............................................. 126 B. AERIAL COLOR INFRARED PROTOGRAPRY........................ 127 Objectives........................................... 127 4 Me t h od s.............................................. 127 Results.............................................. 131 Summary and Conclusions.............................. 148 i 1 VII. REFERENCES................................................... 150 I i ? I l iii

- - ~ _ - i i r LIST OF FIGURES 1 FIGURE Page j I-l VIEW OF THE BEAVER VALLEY POWER STATION, BVPS............. 2 I-2 LOCATION OF STUDY AREA, BEAVER VALLEY POWER j STATION, SHIPPINGPORT, PENNSYLVANIA....................... 3 1 ) I-3 ORIO RIVER FLOW (cfs) AND TEMPERATURE (OF) RECORDED BY THE U. S. ARMY CORPS OF ENGINEERS FOR THE NEW CIMBERLAND PLOL, 198 6, BVPS............................... 5 V-A-1 SAMPLING TRANSECTS IN THE VICINITY OF THE BEAVER j VALLEY AND SdIPPINGPORT POWER STATIONS.................... 16 i V-B-1 BENTHOS SAMPLING STATIONS, BVPS........................... 19 4 V-B-2 MEAN PERCEWF COMPOSITION OF THE BENTHOS ColetDNITY IN THE ORIO RIVER NEAR BVPS DURING PREOPERATIONAL AND 3, OPERATIONAL YEARS......................................... 29 V-C-1 MONTHLY PHYTOPLANKTON DENSITIES IN THE OHIO RIVER 6 DURING PREOPERATIONAL (1974-1975) AND OPERATIONAL (1976-1986) YEARS, BVPS................................... 37 l l V-C-2 PHYTOPLANKTON GROUP DENSITIES FOR ENTRAI!9 TENT j SAMPLES, 1986, BVPS....................................... 38 l V-D-1 MONTHLY ZOOPLANKTON DENSITIES IN THE ORIO RIVER DURING PREOPERATIONAL (1974-1975) AND OPERATIONAL j (1976-1986) YEARS, BVPS................................... 49 1 j V-D-2 ZOOPLANKTON GROUP DENSITIES FOR ENTRAINMENT SAMPLES,

1986, BVPS................................................

54 ) l V-E-1 FISH SAMPLING STATIONS, BVPS.............................. 62 1 t V-F-1 ICHT!!YOPLANKTON SAMPLING STATIONS, BVPS................... 78 i I l v-G-1 Im xE mUCwRE, BvPS.................................... .6 i l V-I-l PHOTOGRAPHS OF Corbicula COLLECTED, BVPS.................. 112 V-I-2 Corbicula MONI10 RING PROGRAM SAMPLING STATIONS OF THE LOWER RESERVOIR OF UNIT I COOLING TOWER, BVPS...... 114 I l V-I-3 Corbicula MONITORING PROGRAM SAMPLING STATIONS, OHIO RIVER SYSTEM, BVPS................................... 115 l l iv b l , - - -.., - -. ~. -., - - _ _ - -_.

- ~ . - _.. ~. LIST OF FIGURES (Continued) FIGURE Page V-I-4 Corbicula MONITORING PROGRAM SAMPLING STATIONS, INTAKE STRUCTURE, BVPS.................................... 118 { V-I-5 SUNIARY OF Corbicula COLLECTED IN IMPINGEMENT SURVEYS EUR ONE 24-ITOUR PERIOD PER WEEK 1986, BVPS........ 125 l VI-B-1 INDEX TO PHOTOGRAPHY BEAVER VALLEY POWER STATION AND VICINITY, AUGUST 13 AND 2 6, 19 8 6.......................... 129 i VI-B-2 DISTRIBUTION OF VEGETATION STRESS IN THE VICINITY OF THE BEAVER VALLEY POWER STATION, 1986..................... 134 I I B i l 1 l' i i V .-n---....---,,- r a --g---- ---.------,w- .-------.--.--,w n - -.--- -, - -., - - - - -c---- ~~ --.

l LIST OF TABLES TABLE Page i I-l ORIO RIVER FIDW (cfs) AND TEMPERATURE (OF) RECORDED BY THE U. S. ARMY CORPS OF ENGINEERS FOR THE NEW CUMBERLAND POOL, 1986, BVPS........................... 6 V-A-1 AQUATIC MONITORING PROGRAM SAMPLING DATES, 1986 BVPS...................................................... 17 V-B-1 SYSTEMATIC LIST OF MACROINVERTEBRATES COLLECTED IN PREOPERATIONAL AND OPERATIONAL YEARS IN THE OHIO RIVER NEAR BVPS........................................... 20 V-B-2 MEAN NUMBER OF MACROINVERTEBRATES (Number /m2) AND PERCE!ff COMPOSITION OF OLIGOCHAETA, CHIRONOMIDAE, MOLLUSCA AND OTHER ORGANISMS, 1986, BVPS.................. 26 V-B-3 BENTHIC MACROINVERTEBRATE DENSITIES (Individuals /m2), MEAN OF TRIPLICATE M R BACK CHANNEL AND DUPLICATE SAMPLES COLLECTED IN THE MAIN CHANNEL OHIO RIVER, MAY 13, 1986, BVPS........................................ 27 V-B-4 BENTHIC MACROINVERTEBRATE DENSITIES (Individuals /m2), MEAN OF TRIPLICATE M R BACK CHANNEL AND DUPLICATE SAMPLES COLLECTED IN THE MAIN CHANNEL OHIO RIVER, SEPTEMBER 15, 1986, BVPS.................................. 28 V-B-5 MEAN DIVERSITY VALUES FOR BENTHIC MACROINVERTEBRATES i COLLECTED IN THE ORIO RIVER, 1986, BVPS................... 31 V-B-6 BENTHIC MACROINVERTEBRATE DENSITIES (Number /m2) FOR STATION 1 (CONTROL) AND STATION 2B (NON-CONTROL) DUPING l PREOPERATIONAL AND OPERATIONAL YEARS, BVPS................ 32 ) V-C-1 MONTHLY PHY'IOPLANKTON GROUP DENSITIES (Number /ml) AND PERCEfff COMPOSITION FROM ENTRAINMENT SAMPLES, 1986, BVPS................................................ 36 V-C-2 PHYTOPLANKTON DIVERSITY INDICES BY MONTH FOR ENTRAINMENT SAMPLES, 1986, BVPS........................... 39 i V-C-3 DENSITIES (Number /ml) OF MOST ABUNDA!ff PHYTOPLANKTON TAXA COLLECTED FROM ENTRAINMENT SAMPLES, JANUARY THROUGH DECEMBER 1986, BVPS............................... 40 1 i V-C-4 PHTIOPLANKTON DIVERSITY INDICES (MEAN OF ALL SAMPLES 1973 TO 1986) NEW CUMBERLAND POOL OF THE i ORIO RIVER, BVPS.......................................... 43 vi 1 i

LIST OF TABLES (Continued) TABLE Page V-D-1 MONTHLY ZOOPLANKTON GROUP DENSITIES (Number / liter) AND PERCENT COMPOSITION FROM ENTRAINMENT SAMPLES,

1986, BVPS................................................

47 V-D-2 MEAN ZOOPLANKTON DENSITIES (Number / liter) BY MONTH FROM 1973 THROUGH 1986, OHIO RIVER AND BVPS............... 50 i V-D-3 DENSITIES (Number / liter) OF MOST ABUNDANT ZOOPLANKTON TAXA COLLECTED FROM ENTRAINMENT SAMPLES, JANUARY THROUGH DECEMBER 1986, BVPS............................... 52 V-D-4 ZOOPLANKTON DIVERSITY INDICES BY MONTH FOR ENTRAINMENT SAMPLES, 1986, BVPS....................................... 5F V-D-5 MEAN ZOOPLANKTON DIVERSITY INDICES BY MONTH FROM 1973 THROUGH 19 8 6 IN THE ORIO RIVER NEAR BVPS.................. 58 V-E-1 FAMILIES AND SPECIES OF FISH COLLECTED IN THE NEW CUMBERLAND POOL OF THE OHIO RIVER, 1970-1986, BVPS........ 64 V-E-2 NUMBER OF FISH COLLECTED AT VARIOUS TRANSECTS BY { GILL NET (G), ELECTROFISHING (E), AND MINNOW TRAP (M) IN THE NEW CUMBERLAND POOL OF THE OHIO RIVER, 1986, SVPS................................................ 67 V-E-3 NUMBER OF FISH COLLECTED PER MONTH BY GILL NET (G), ELECTROFISHING (E), AND MINNOW TRAP (M) IN THE NEW CUMBERLAND POOL OF THE OHIO RIVER, 1986, BVPS............. 68 V-E-4 NUMBER OF FISH COLLECTED BY GILL NET (G), ELECTROFISHING (E), AND MINNOW TRAP (M) AT TRANSECTS IN THE NEW CIMBERLAND POOL OF THE ORIO RIVER, 1986, BVPS........................ 69 j V-E-5 ELECTROFISHING CATCH MEANS (X) AT TRANSECTS IN THE NEW CUMBERLAND POOL OF THE ORIO RIVER, 1974-1986, BVPS........ 71 V-E-6 GILL NET CATCH MEANS (X) AT TRANSECTS IN THE NEW CUMBERLAND POOL OF THE ORIO RIVER, 1974-1986, BVPS........ 73 V-F-1 NUMBER AND DENSITY OF FISH EGGS, IARVAE, JUVENILES, 3 l AND ADULTS (Number /100 m ) COLLECTED WITH A 0.5 m PLANKTON NET IN THE ORIO RIVER BACK CHANNEL OF i PHILLIS ISLAND (STATION 2B) NEAR BVPS, 1986............... 79 I I I i vii i i k

LIST OF TABLES (Continued) TABLE Page V-F-2 DENSITY OF ICHTHYOPLANKTON (Number /100 m3) COLLECTED IN THE OHIO RIVER BACK CHANNEL OF PHILLIS ISLAND (STATION 2B) NEAR BVPS, 1973-1974, 1976-1986.............. 84 V-G-1 FISH COLLECTED DURING THE IMPINGEMENT SURVEYS, 1976-1986, BVPS........................................... 87 V-G-2

SUMMARY

OF FISH COLLECTED IN IMPINGEMENT SURVEYS CONDUCTED FOR ONE 24 HOUR PERIOD PER WEEK DURING 1986, BVPS................................................ 89 V-G-3 SUMARY OF IMPINGEMENT SURVEYS DATA FOR 198fi, BVPS........ 90 i V-G-4

SUMMARY

OF FISH COLLECTED IN IMPINGEMENT SURVEYS, 1976-1986, BVPS........................................... 92 2 V-G-5 NUMBER AND PERCENT OF ANNUAL '!OTAL OF FISH COLLECTED IN IMPINGEMEM' SURVEYS AND IN THE NEW CUMBERLAND POOL OF THE OHIO RIVER, 1986, BVPS............................. 94 V-G-6 SUMARY OF CRAYFISH COLLECTED IN IMPINGEMENT SURVEYS CONDUCTED FOR ONE 24-HOUR PERIOD PER WEEK, 1986, BVPS..... 95 V-G-7 SUMARY OF Corbicula COLLECTED DURING IMPINGEMENT SURVEYS FOR ONE 24-HOUR PERIOD PER WEEK, 1986, BVPS............... 97 V-G-8 SUMARY OF MISCELLANEOUS INVERTEBRATES COLLECTED IN IMPINGEMENT SURVEYS CONDUCTED FVR ONE 24-HOUR PERIOD PER WEEK, 1986, BVPS...................................... 99 V-H-1 NUMBER AND DENSITY OF FISH EGGS, LARVAE, JUVENILES, 3 AND ADULTS (Number /100 m ) COLLECTED WITH A 0.5 m PLANKTON NET AT THE ENTRAINMENT RIVER TRANSECT IN THE OHIO RIVER NEAR BVPS, 1986............................ 103 V-I-1 Corbicula COLLECTED IN THE COOLING TOWER MAY 19, 1986, BVPS........................................ 117 V-I-2 Corbicula COLLECTED IN THE OHIO RIVER MAY 13, 1986, BVPS........................................ 119 V-I-3 Corbicula COLLECTED IN THE OHIO RIVER SEPTEMBER 15 & 16, 1986, BVPS............................. 120 .i viii i t

1 LIST OF TABLES (Continued) l TABLE Page V-I-4 Corbicula DENSITIES (clams /m2) SU194ARIZED FROM BENTHIC MACROINVERTEBRATE COLLECTIONS 1973 THROUGH

1986, BVPS................................................

122 V-I-5

SUMMARY

OF Corbicula COLLECTED DURING IMPINGEMENT SURVEYS FOR ONE 24-HOUR PERIOD PER WEEK, 1986, BVPS............... 123 VI-B-1

SUMMARY

OF THE AERIAL Pl80TOMISSION FLOWN IN THE VICINITY OF THE BVPS, 1986......................................... 130 VI-B-2 TYPE AND FREQUENCY OF VEGETATION STRESS IN THE VICINITY OF BVPS, TERRESTRIAL MONITORING PROGRAM, 1986............. 137 I I I I l i l 5 i a I i i 6 l \\ 1 I i l i l ix 1

LIST OF EXHIBITS EXHIBIT Page VI-B-I R. M. KEDDAL AND ASSOCIATES, INC. FLIGHT REPORT........... 131 i 1 l I I l \\

DDQUESNE LIGHT COMPANY 1986 ANNUAL ENVIRONMENTAL REPORT I. INTRODUCTION This report presents a summary of the non-radiological environmental data collected by Duquesne Light Company (DLCo) during calendar year 1986, for the Beaver Valley Power Station (BVPS) Unit 1, Operating License No. DPR-66. This study was initiated in the interest of providing a non-disruptive data base between the start up of BVPS Unit 1 and that of Unit 2. This is primarily an optional program, since the Nuclear Regulatory Commission (NRC) on February 26, 1980, granted DLCo's request to delete all of the aquatic monitoring program, with the exception of fish impingement (Amendment No. 25), from the Environmental Technical Specifi-cations (ETS), and in 1983, dropped the fish impingement studies from the ETS program of required sampling along with non-radiological water qual-ity requirements. A. SCOPE AND OBJECTIVES OF THE PROGRAM The objectives of the 1986 environmental program were: (1) to evaluate vegetation stress in the vicinity of the BVPS cooling

towers, (2) to assess the possible environmentalt impact of plant operation (including impingement and entrainment) on the plankton, benthos, fish and ichthyoplankton communities in the Ohio River, (3) to provide a sampling program for establishing a continuing data base, and i

i (4) to evaluate the presence of Corbicula at the BVPS and to assess the populaticn of Corbicula in the Ohio River. B. SITE DESCRIPTION is located on the south bank of the Ohio River in the Borough of BVPS Shippingport, Beaver County, Pennsylvania, on a 501 acre tract of land. 1

Aa m-m--- ---_,..u-- m..a.,.s ,a,-a ,,,,,,,_,,a,,-w DUQUESNE LIGHT COMPANY ANNUAL ENVIRONMENTAL REPORT ..sQA'"> A ,h'n&?[\\'s%lk'h., a< K 3 \\ '..k.Nh, dl$1.L;. y, fg s s 3 g, V'$h ,'Y

k. A q \\'(

N' M

\\ gef g r. M [', hTh A s g-(3 ,,Yih ' f [K., s z

g. '

,9 [\\\\ gx i < a* ~gg Y V. ,{'

({

q..

m. 4

.. 'sA.o,.y c ?2 'a (( h:.ky 4 h, j); t 4,4%l{% \\ a.1 (( ( V, C{Y y/ . u p,. o g '\\ 4 \\ ' '( ' N x ; [ i (- t, t t, d' \\ s l-ub. e + %,N + \\ N 4; x.~,p%.c \\ . k;s . A r :- 3 f \\s g T y \\(sYh9gs :%, ;* gk.w"w'. V. Mb \\h i f c guy 4 'yw) v .* k. y \\ t. s st s ,h' 4 c, e p b.

i DUQUESNE LIGHT COMPANY ANNUAL ENVIRONMENTAL REPORT .':".T;f.O g N A dy.-. ,vg.. .L...q tp t I ~.. 9 / ~, , a-. ..-.r Stavf A veLLBT ( ,o ..,.no., , _,j 1 s s~~~am, \\ "'\\"'". (.a*%. Jf. _,, u h I r.! I M; ) 2 = amtes / ?, p / f wouses' j stavte vauty j PO*tR Sf arlog %Nif I g ( \\ N s d f$) j j- . ~ / smeriNc.reer atome .o.t st a tio,. l' i l %;s, ~ i i scatt is eigen 1 FIGURE I-2 l LOCATION OF STUDY AREA, BEAVER VALLEY POWER STATION, SHIPPINGPORT, PENNSYLVANIA f BVPS 3 i I

DUQUESNE LIGHT COMPANY 1986 ANNUAL ENVIRONMENTAL REPORT The Shippingport Station shares the site with BVPS. Figure I-l shows a view of both stations. The site is approximately 1 mile (1.6 km) from Midland, Pennsylvania; 5 miles (8 km) from East Liverpool, Ohio and 25 miles (40 km) from Pittsburgh, Pennsylvania. Figure I-2 shows the site location in relation to the principal population centers. Population density in the inunediate vicinity of the site is relatively low. The population within a 5 mile (8 km) radius of the plant is approximately 18,000 and the only area of concentrated population is the Borough of Midland, Pennsylvania, which has a population of approximately 4,300. The site lies along the Ohio River in a valley which has a gradual slope extending from the river (elevation 665 ft. (203 m) above sea level) to an elevation of 1,160 f t. (354 m) along a ridge south of BVPS. Plant entrance elevation at the station is approximately 735 f t. (224 m) above sea level. The station is situated on the Ohio River at river mile 34.8, at a loca-tion on the New Cumberland Pool that is 3.3 river miles (5.3 km) down-stream from Montgomery Lock and Dam and 19.4 miles (31.2 km) up-stream from New Cumberland Lock and Dam. The Pennsylvania-Ohio-West Virginia border is 5.2 river miles (8.4 km) downstream from the site. The river flow is regulated by a series of dams and reservoirs on the Beaver, Allegheny, Monongahela and Ohio Rivers and their tributaties. Flow gen-erally varies from 5,000 to 100,000 cubic feet per second (cfs). The range of flows in 1986 is shown on Figure I-3 as well as Table I-1. Ohio River water temperatures generally vary from 32 to 82 F (0 to 28 0 0 0 0 C). Minimum and maximum temperatures generally occur in January and July / August, respectively. During 1986, minimum temperatures were observed in January and maximum temperatures in August (see Figures I-3 and Table I-1). BVPS Unit 1 has a thermal eating of 2,660 megawatts (Mw) and an electri-cal rating of 835 Mw. The circulating water system is a closed cycle system using a cooling tower to minimize heat released to the Ohio River. Comunercial operation of BVPS Unit 1 began in 1976. 4

DUQUESNE LIGHT COMPANY ANNUAL ENVIRONMENTAL REPORT MONTHLY MAXIMUM MONTHLY AVERAGE MONTHLY MINIMUM 240 - /\\ / \\ ~ / \\ "g 180 - / \\ j n / \\ 2 \\ 120 - g [' \\ O \\ ^ / j s L \\ N f j 60 - \\ / \\ / N / N / s/ s / s .. / N. _.- -. N~. .---. / J lF lM lA lM lJ lJ lA l3 l0 lN lD l I 90 - 80 - /N 6 Ns's L 70 - , /,

• N, g

/ \\ y to - \\ f 8 / \\ 50 - g 2 / \\ w / \\ l H \\ 40 - ,N* l '/. 30 j J lF lM lA lM lJ lJ lA lS l0 lN l0 l MONTH FIGURE I-3 OHIO RIVER FLOW (cfs) AND TEMPERATURE (0 F) RECORDED BY THE U.S. ARMY CORPS OF ENGINEERS FOR THE NEW CUMBERLAND POOL, 1986 BVPS 5 l

TA!LE I-1 q ORIO RIVER FIDt (cfs) AfD TEMPERATURE (OF) RECORDED AT 1 U.S. ARMY CORPS OF ENGINEERS FOR 1HE j NEW CtMBERLAND POOL, 1986, BVPS Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 3 Flow (cfs x 10 ) i Monthly Maximum 147.0 232.0 153.5 62.5 34.0 101.5 66.5 23.0 33.5 99.0 130.0 123.5 h Monthly Average 41.5 95.1 57.9 33.8 18.2 37.8 35.4 11.7 11.3 32.9 52.7 69.5 cc t $h i i Monthly Minimum 13.0 33.5 18.0 13.0 8.0 8.0 15.n 6.0 5.5 12.0 10.5 37.0 l IS t s bC cn Temperature (OF) gg Monthly Maximum 34 38 52 56 68 73 78 82 76 73 57 41 gn i e8 Monthly Average 32 34 40 53 61 71 74 78 72 61 49 37 t~ N Monthly Minimum 31 31 34 50 54 69 71 72 69 55 39 34 g I t 1 4 i i i

DUQUESNE LIGHT COMPANY 1986 ANNUAL ENVIRONMENTAL REPORT i a II. SIDGERY AND CONCLUSIONS The 1986 BVPS Unit 1 Non-Radiological Environmental Monitoring Program 1 included surveillance and field sampling of Ohio River aquatic life. This is the tenth year of operational monitoring and, as in the previous operational monitoring years, no evidence of adverse environmental impact to the aquatic life in the Ohio River or vegetation near BVPS was observed. The aquatic environmental monitoring program included studies of: benthos, fish ichthyoplankton, impingement and plankton entrainment. Sampling was conducted for benthos and fish upstream and downstream of the plant during 1986 to assess potential impacts of BVPS discharges. These data were also compared to preoperational and other operational data to assess long term trends. Impingement and entrainment data were examined to determine the impact of withdrawing river water for in-plant use. The following oaragraphs sumarize these findings. Benthos. Substrate was probably the most important factor controlling the distribution and abundance of the benthic macroinvertebrates in the Ohio River near BVPS. Soft muck-type substrates along the shoreline were conducive to worm and midge proliferation, while limiting macroinverte-beates which require a more stable bottom. At the shoreline stations, Oligochaeta accounted for 85% of the macrobenthos collected, whereas l Chironomidae and Mollusca each accounted for about 10% and 44 respec-tively. Corbicula were present in the 1981 through 1986 benthic surveys. Community structure has changed little since preoperational years and there was no evidence that BVPS operations were affecting the benthic comunity of the Ohio River. Phytoplankton. The phytoplankton community of the Ohio River near BVPS exhibited a seasonal pattern similar to that observed in previous years. 7

DUQUESNE LIGHT COMPANY 1986 ANNUAL ENVIRONMENTAL REPORT l This pattern is common to temperate, lotic environmen ts. Total cell densities were within the range observed during previous years. Diver-sity indices of phytoplankton, except for those in April, were as high or higher than those previously observed near BVPS. Zooplankton. Zooplankton densities throughout 1986 were typical of the temperate zooplankton community found in large river habitats. Total densities exceeded the range of those reported in previous years. Popu-lations developed high densities in May with the peak annual maximum I occurring in September. Protozoans and rotifers were always predcznint.nt. Common and abundant taxa in 1986 were similar to those reported during preoperational and other operational years. Shannon-Weiner diversity, number of species, and evenness were within the ranges of preceding years. Based on the data collected during the eleven operating years (1976 through 1986) and the three preoperational years (1973 through 1975), it is concluded that the overall abundance and species co position of the zooplankton in the Ohio River near BVPS has remained stable and possibly improved slightly over the fourteen year period from 1973 to 1986. No evidence of appreciable harm to the river zooplankton from BVPS Unit 1 operation was found. The data indicate that increased turbidity and current from high water conditions have the strongest effects of delaying the population peaks and temporarily decreasing total zooplank-ton densities in the Ohio River near BVPS. Fish. The fish community of the Ohio River in the vicinity of BVPS has been sampled from 1970 to present, using several types of gears electro-fishing, gill netting, and periodically minnow traps and seines. The results of these fish surveys show normal community structure based on species composition and relative abundance. In all the surveys since 1970, forage species (minnows and shiners) were collected in the highest numbers. This indicates a normal fish community, since sport species and predators rely heavily on this forage base for their survival. Varia-tions in total annual catch are attributable primarily to fluctuations in the population size of the small species. Small species with high repro-ductive potentials frequently respond to changes in natural environmental 8

l ) DUQUESNE LIGHT COMPANY l 1986 ANNUAL ENVIRONMENTAL REPORT factors (competition, food availability, cover, and water quality) with large changes in population size. These fluctuations are naturally occurring and take place in the vicinity of BVPS. Although variation in total catches has occurred, species composition has remained fairly stable. Since the initiation of studies in 1970, forage fish of the family Cyprinidae have dominated the catches. Emerald shiners, gizzard shad, sand shiners and bluntnose minnows have consis-tently been among the most numerous fish, although the latter two species may have declined in recent years. Carp, channel catfish, smallmouth and spotted bass, yellow perch, and walleye have all remained common species. Since 1978, sauger has become a common sport species to this area. Differences in the 1986 electrofishing and gill net catches, between the Control and Non-Control Transects were similar to previous years (both operational and pre-operational) and were probably caused by habitat preferences of individual species. This habitat preference is probably the most influential f actor that affects where the different species of fish are collected and in what relative abundance. Data collected from 1970 through 1986 indicate that fish in the vicinity of the power plant have not been adversely affected by BVPS operation. Ichthyoplankton. Shiners, gizzard shad, and freshwater drum dominated the 1986 ichthyoplankton catch from the back channel of Phillis Island. Peak densities occurred in June and consisted mostly of the early larval stages. Little or no spawning was noted in April and May. There was a decrease in spawning af ter July into August. No substantial differences were observed in species composition or spawning activity of most species over previous years. Fish Impingement. The result of the 1986 impingement surveys indicate that withdrawal of river water at the BVPS intake for cooling purposes has little or no effect on the fish populations. Two hundred and thir-teen (213) fishes were collected, which is ths fifth fewest collected 9

l DUQUESNE LIGHT COMPANY 1986 ANNUAL ENVIRONMENTAL REPORT i since initia1 operation of BVPS in 1976. Gizzard shad were the most numerous fish, comprising 54.0% of the total annual catch. The total weight of all fishes collected in 1986 was 7.15 kg (15.8 lbs). Of the 213 fishes collected, 39 (18.3%) were alive and returned via the dis-charge pipe to the Ohio River. Plankton Entrainment. Entrainment studies were N rformed to investigate the impact on the ichthyoplankton of withdrawing rivez.- water for in-plant { use. Entrainment-river transect surveys for ichthyoplekton were con-ducted to ascertain any changes in spawning activity occurring in the Ohio River adjacent to the BVPS intake. The moet abundant ichthyoplank-ton survey occurred at night during the month of July. Assumit:g actual entrainment rates were similar to those found in 1976 throught. 1979, river abundance of ichthyoplankton indicate no substantial entrairment losses should have occurred in 1986 due to the operation of BVPS. Assessment of monthly phytoplankton and zooplankton data of past yars indicated that under worst-case conditions of minimum low river flow (5,000 cfs), about 1.25% of the phytoplankton and zooplankton passing the intake would be withdrawn by the BVPS circulating water system. This is considered to be a negligible loss of phytoplankton and zooplankton rela-tive to river population. Corbicula Monitoring Program. The results of the 1986 Corbicula Monitoring Program show that no live clams were collected from the upper reservetr of Unit 1 Cooling Tower. Since the water entering this area comes directly from the condensers, it is suspected that elevated water temperatures make this area unsuitable for the clams. Corbicula survive in the lower reservoir with an estimated population e' 70 million clams (88% alive). From the river survey conducted in September 1986, Corbicula inhabit the upper Ohio drainage providing the opportunity for clams to enter BVPS. In spite of the large population of clams in the lower reservoir of Unit 1 Cooling Tower and river population, BVPS oper-ated normally. >j 10

DUQUESNE LIGHT COMPANY 1986 ANNUAL ENVIRONMEWTAL REPORT Terrestrial Monitoring Program. During the summer and fall of 1986, vegetation stress was monitored in the vicinity of the Beaver Valley Power Station cooling towers as part of an Terrestrial Monitoring Program. Color infrared aerial photography, photointerpretation of the imagery, and field observations were used to detect stressed or damaged vegetation and to determine probable causes. Evidence from the aerial photography and field surveys revealed that the majority of occurrences of vegetation stress were directly due to natural causes or a combination of natural causes and human activities involving intensive land use. These f actors included insect infestation (Eas te rn tent catepillar/ fall webworm / cherry lace bug and locust leaf miner / locust borer), decadence (ove rage-overmatu re), overgrown

woodlot, poor drainage / periodically flooded areas, and wildfire.

Human activities resulting in vegetation damage or stress included logging, heavy equip-ment or construction activity, utility corridor maintenance, and erosion. Many areas of unidentified stress were also delineated (most of which are most likely the result of insect infestations). Of the 510 identified and delineated occurrences of vegetative stress, over 56% were directly attributable to natural causal factors. Approxi-mately 16% of the occurrences were caused by a combination of natural factors and human activities involving land use changes, drainage altera-tions and fire. Twelve percent of the occurrences of stress were cate-gorized as unknown; the majority of these can be assumed to be due to natural causes. Less than 16% of the occurrences are directly attribut-able solely to human activities. Based on interpretation of the CIR aerial photography and field verifica-tion, there is no evidence to suggest that the BVPS cooling towers are causing vegetation stress. A combination of drift from the BVPS and Bruce Mansfield cooling towers, regional stack emissions, air pollution from other sources such as automobiles, and the local climate may con-tribute to vegetation stress in the region. The uncertainties of such combinations and resultant synergistic effects would make it difficult to 11

DUQUESNE LIGHT COMPANY 1986 ANNUAL ENVIRONMENTAL REPORT the actual contribution of the BVPS cooling tower drif t to these measure effects. It is also possible that the BVPS cooling towers are subtly affecting local microclimatic systems with their input of moisture and heat. Damaged vegetation from winter ice buildup would be a diagnostic measure of this effect, but there was not evidence of heavy limb fall or struc-tural damage in the photographs or field observations. Enhanced condi-tions for the propagation of insects or disease organisms is another possible result of microclimatic modification, but the study of such phenomena was beyond the scope of this program. 12

DUQUES2E LIGHT COMPANY 1986 ANNUAL ENVIRONMENTAL REPORT III. ANALYSIS OF SIGNIFICANT ENVIRONMENTAL CHANGE In accordance with BVPS Unit 1 ETS, Appendix B to Operating License No. l DPR-66, significant environmental change analyses were required on benthos, phytoplankton, and zooplankton data. However, on February 26, 1980, the NRC granted DLCo a request to delete all the aquatic monitoring program, with the exception of fish impingement, from the ETS (Amendment No. 25, License No. DPR-66). In 1983, the NRC deleted the requirement for additional impingement studies. However, in the interest of provid-ing a non-disruptive data base between the start-up of BVPS Unit 1 and that of Unit 2, DLCo is continuing the Aquatic Monitoring Studies. I 13

DUQUESNE LIGHT COMPANY 1986 ANNUAL ENVIRONMENTAL REPORT IV. MONITORING NON-RADIOLOGICAL EFFLUENTS A. MONITORING CHEMICAL EFFLUENTS The Environmental Technical Specifications (ETS) that were developed and included as part of the licensing agreement for the BVPS, required that certain non-radiological chemicals and the temperature of the discharges be monitored and if limits were exceeded they had to be reported to the NRC. During 1983, the NRC (Amendment No. 64) deleted these water quality requirements. The basis for this deletion is that the reporting require-ments would be administered under the NPDES permit. However, the NRC requested that if any NPDES permit requirements were exceeded, that a copy of the violation be forwarded to the Director, Office of Nuclear Reactor Regulation. B. HERBICIDES Monitoring and reporting of herbicide used for weed control during 1986, is no longer required as stated in Amendment No. 64; thus, this informa-tion is dat included in this report. 14

DUQUESNE LIGHT COMPANY 1986 ANNUAL ENVIRONMENTAL REPORT V. AQUATIC MONITORING PROGRAM A. INTRODUCTION The environmental study area established to assess potential impacts consisted of three sampling transects (Figure V-A-1). Transect 1 is located at river mile (RM) 34.5, approximately 0.3 mi (0.5 km) upstream of BVPS and is the Control Transect. Transect 2 is located approximately 0.5 mi (0.8 km) downstream of the BVPS discharge structure. Transect 2 is divided by Phillis Island; the main channel is designated Transect 2A and the back channel Transect 2B. Transect 2B is the principal Non-Control Transect because the majority of aqueous discharges from BVPS Unit 1 are released to the back channel. Transect 3 is located approxi-mately 2 mi (3.2 km) downstream of BVPS. Sampling dates for each of the program elements are presented in Table V-A-1. The following sections of this report present a summary of findings for each of the program elements. 15

~ ~ 6) Lici ..Il i:.. ln %l :e Y. g l=* N p,,,.j. \\ 'tgj. g ~ '4 Ec TRANSECT 3 Ng% ' :h Q N 7 ,"y e,,,,,, v'.g g= Q.,.Q~flf } N: gr-u ,a N m5 g z ' ~ ~. '.. N@ TRAIJSECT I o g'. EE TRAtJSECT 2A .x; 8-< tEGEND h Ds BE AVEN vat L E Y DiscitARGE sa j.,, D2 $441PPINGPONT DISCilARGE

• yt/

g 03 BNDUSTHI AL Di$ CHANGE l O ASD TO NAVIGATION i {,,',,,,,,, BEAVEH TRANSECT 28 gi;PPIN,G, ,H yAttgy

---

in Ausuissic n Llut g

S T A TION l FIGURE V-A-1 SAMPLING TRANSECTS IN TIIE VICINITY OF TIIE BEAVER VALLEY AND SIIIPPINGPORT POWER STATIONS BVPS

TABLE V-A-1 AQUATIC MONITORTNG PROGRAM SAf9 LING DATES 1986 avPs corbicula Tehthvoplankton Phyto-and Month Benthos Monitoring Fish Impingement Day Night tooplankton January 3, 10, 17, 24, 31 17 e February 7, 14, 21, 28 21 March 7, 14, 21, 28 14 cc April 4, 11, 18, 25 18 18 $Ez g rus May 13 13, 19 13, 14, 28 2, 9, 16, 23, 30 13 14 16 I < t-' HM June 6, 13, 20, 27 19 20 5O P July 4 thru 18 15, 16 18, 25 15 15 18 Q@ NE August 1, 8, 15, 22, 29 12 15 t* g

n.<

l September 15 15, 16 15, 16 5, 12, 19 12 l o N October 3, 10, 17, 24, 31 15 November 9, 20, 22 7, 14, 21, 28 14 December 15, 16, 17, 18 5, 12, 19, 26 16 i r

DUQUESNE LIGHT COMPANY 1986 ANNUAL ENVIRONMENTAL REPORT B. BENTHOS Objectives To characterize the benthos of the Ohio River near BVPS and to determine the impsets, if any, of BVPS operations. Methods tien thic surveys were performed in May and September, 1986. Benthos namples were collec*ad at Transects 1, 2A, 2B an 3 (Figure V-B-1), using a Ponar grab sampler. Duplicate samples were taken off the south shore at Transects 1, 2A and 3. Sampling at Transect 2B, in the back channel of Phillis Island, consisted of a single Ponar grab at the south, middle and north side of the channel. Each grab was washed within a U.S. Standard No. 30 sieve and the remains placed in a bottle and preserved with 10% formalin. In the laboratory, macroinvertebrates were sorted from each sample, identified to the lowest 2 possible taxon and counted. Mean densities (numbers /m ) for each taxon were calculated for each of two replicates and three back channel samples. Three species diversity indices were calculated: Shannon-Weiner, evenness indices (Pielou 1969), and the number of species (taxa). Habitats Substrate type was an important factor in determining the composition of the benthic community. Two distinct benthic habitats exist in the Ohio River near BVPS. These habitats were the result of damming, channeliza-tion, and river traffic. Shoreline habitats were generally sof t muck substrates composed of sand, silt and detritus. An exception occurs along the north shoreline of Phillis Island at Transect 2A where clay and sand predczninate. The other distinct habitat, hard substrate, is located at midriver. The hard substrate may have been initially caused by chan-nelization and scouring by river currents and turbulence from commercial boat traffic. Thirty-four macroinvertebrate taxa were identified during the 1986 moni-toring program (Table V-B-1). Species composition during 1986 was 18

DJQUESNE LIGHT COMPANY ANNUAL ENVIRONMENTAL REPORT z3E QM -3 0 3 0 3 2 Uo..O. m e* 34 e I g4> a e 4 n n 4 1 3 Ek f' e -~ j ~4 E s ....** O,/ g i e l' j ww88 ze $*$5 t1% a-3,4N M 3 l2 "g-h 2 = i o *d z p T Ei [va { ha fk zo i g 4,.p.,a-.- .....,...'*9 -m .1- .= m. .s 9 h'.y g a s ;. ( av, i-c: g,", , f. f ' ~,W + g [ 1.. : / 2' f *' ' y [ < d'./ Q d4 . u;,o..:; g ; +, i:!. b y 4 w.: c ,n.v(E..).' ;. ' S' p I f.3 f.. [p ;- ' ' g 4 s e 2 34 o<. W %2 W

• u4 2 e5s2 i

E.. !. L) sI**s 3 8 $,r"o22 3!m l j se.acoda I I X X X X X X x 1 I I r3 1 mM j ru Eatoprocta $e O Ursatella tracilis X X X X X X X X X X X X X MM i

x8 O i

O :E 4 Ectoprocta gH l Federicella sp. 1 I I I mn 4 Faludicella articulata X I O g% i Pectinatella sp. I y j j Flamatella sp. I t* > A 3k i Annelida m i i Oligochaeta 3 l Aeolosomatidae I I I I so i Eachytraeidae I X X X X X X X X X H Maididae ) Amphichaeta leydiali I Amphichaeta sp. I X k ] Arcteenais lamaadt I I I Aulophorus sp. I 1 q< Gaetonaster diaphanus I I I I I I l C. diastrophus I X X 1 Bero diaitata 1 I X 3 U tvea I I { i b0 9 I X X X X X X X X X X i KaTs barbara X X U retscheri I I X X X X X i N. cammunts I I I I I N. elinauts I X X i l 4 1 )

l TABI.E V-B-1 (Continued) Preoperational Operational 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1981 1984 1985 1986 N. variabilis X X Nais sp. X X X X X X X X X X X X X l W oonais serpentina I X X Paranais frict X X X X X X X X X X X X X Faranais sp. X Pristina osborni X X X X P. sina X X X Y Pristina sp. X Slavina appendiculata X l Stephensoniana trivandrana I X X X X X l Stylaria lacustris I X X X i Uncinais uncinata X Vejdovskyella interinedia X X t ~ l Tubificidae e l Aulodrilus limnobius I X X X X X X X X X X A. i eti X X X X X X X X X X X X A. p ur seta X X X X X X X X Eorthrioneurus vejdovskyanum X X X X X X ZD Branchiura sowerby1 X X X X X X X X X X X X hh i Ilyodrilus templetont I X X X X X X X X X X t* En Limnodrilus cervix X X X X X X X X X X X X tre N N L. cervix (variant) X X X X X X X X X Z H I. claparedelanus X X X X X X X X X X X X $C E. hoffmeisteri X X X X X X X X X X X X X X

n o E. spiralis X

I X O% E. udekemianus X X X X X X X X X X X X X X Eimnodrilus sp. X EO Feloscolex multisetosus lonaldentus X X X H lC P. m. multisetosus X X X X X X X X X X X X h9 Potamothrix moldaviensis I X X P. vejdovskyi I X X Psammaryctides curvisetosus X N Tubt fez tubt fex I 1 X X X X O Unidentified immature forms: H with hair chaetae X X X X X X X X X X X X X X without hair chaetae X X X X X X X X X X X X X X Lumbriculidae X X Hirudinea Clossiphoniidae Helobdella elongata X X Helobdella stagnalis X Helodbella sp. X Erpobdellidae Erpobdella sp. I tboreobdella microstoma X X l

l TABLE V-B-1 l (Continued) Preoperational Operational 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 Arthropoda Acarina X X X X X Ostracoda X X X Amphipoda Talitridae Hyallela azteca X X em ridae Crangonyx pseudogracilis X Crangonyx sp. I Cammarus fasciatus I X X Cammarus sp. X X X X X X X X X X X X Decapoda X Collembolla X Ephemeroptera Heptageniidae X X e Stenacron sp. X X Stenonema sp. X No c: Ephemeridae yQ Hexagenta sp. X X >m Caenidae FM g Caenis sp. X X mN m Tricorythodes sp. X yp Ephemeridae w Ephemera sp. I oQ W Hegloptera Statis sp. I ,y H [ Odonata mn g% o Comphidae p i Dromogomphus spoliatus X eg ( Dromogosphus sp. X ,p l Goer,hus sp. X X X X X m Trichoptera i Psychomyidae z Polycer.tropus sp. I H Hydropsychidae I Cheumatopsyche sp. X X Hydropsyche sp. X Hydroptilidae Hydroptila sp. X i Oxvethira sp. X j 1.eptoceridae i cecetis sp. X X X X X X Coleoptera X l Hydrophilidae X Elmidae l Ancyronyx variegatus X Dubtraphia sp. X X X helichus sp. X i

. - - - - -.. -.. - - - - - - - - - - - - - - - ~ - - - ~ ~ - - - -. -. -. - - -.. - - - - - - ~.- i i l TABLI V-B-1 r (Continued) I Preoperational Operational 1971 1974 1975 1976 1977 1978 1979 1980 1981 1987 1983 1984 1945 1986 Stenelais sp. I I I 3 Psephenidae Diptera I:nidentified Diptera I I I I I I I I Psychodidae X I, Pericosa sp. I p Psychoda sp. I ( Telmatoscopus sp. X [ Unidentified Psychodidae pupae I maoboridae G aoborus sp. X X X X X X X l Simulidae I Similitan sp. I i Gironomidae y [ Q ironominae X X e m ironominae pupa I I 1 I c., G ir m is sp. I I I I I I I I 1 I I I c. ( CladopeIsa sp. - I I I eQ l Cryptoch t r->< sp. I I I I I I X X X X X X X X >m l ( Dicrotendipes nervosus I r*g e l Dicrotendipes sp. I I I I mM t i N CIyptoteadipes sp. 1 I I y, Ed Narnischia sp. I I I I I I I I I I I wH Nicropsectra sp. X gQ Microtendipes sp. I gH l Farachiroaceus sp. I I l FolypedtIm (s.s.) convictum type I gngo F. (s.s.) simulans type X 'y' % [ Folypedilm sp. X X X X X X X X t > Whectanytarsus sp. X X X X X X X 5tenochir - e sp. I I I I m St ic tochima sp. I N I o Tanytarsus sp. X X X X X X lm X.=achi r-= sp. I H 6 j Ianypodinae f l Tanypodinae m X Ablabeamyia sp. I I I Z i Coelotanypus scapularis X I I I I I I X X X Frocladius (Procladius) I I I f Frocladius sp. I I 1 1 X X X X X X X X I I Thienemannisyfa group I I I I I Zawrelimyia sp. I t i Orthocladiinae X y l Orthocladiinae pupae I Cricotopus hicinctus X C. (s.s.) trifascia I Ericotopus (Isocladius) sylvestris Group I l C. (Isociadius) sp. I i I l

TAELF V-B-1 (ContinueO) Freoperational Operational 1973 1974 1975 1976 1977 1978 1979 1980 1981 198J 1983 1964 1985 1986 Cricotopus (s.s.) sp. I I I I I Eukleifertella sp. I I I I!ydrobaenus sp. I Limnortyes sp. I Eannocladius (s.s.) distinctus I I I I I Mannocladius sp. I I Orthocladius sp. I I I I I I I I I Farametriocnemus sp. I I Faraphaenocladius sp. I I Esectrocladius sp. I I Iseudorthecladius sp. I Pseudosaittia sp. I I Saittia sp. I I I I I Liamesinae Diamesa sp. I Potthastia sp. I Ceratopogonidae I 1 I I I I I I I DE Dolichopodidae I I yg Empididae I I I I I >m Wiedemannia sp. I r* y su Ephydridae I mM C tuscidae I I Z Ithagionidae I MC Ilpulidae I yS Straticay11dae I f4 2 ~ Syrphidae I gn lepidoptera I I I zo Mollusca H2 Castropoda h "p Ancy11dae ,j Ferrissia sp. I I I I m Planorbidae I N Valvatidae O Valvata perdepressa d Pelecypoda I Corbiculidae Corbicula mantlensis* I I I I I I I I I I I Sphaeridae I I I Pisidits sp. I I I Sphaerium sp. I I I I I I I I I I Unidentified immature Sphaer11dae I I I I Unionidae Anadonta grandia I Elliptio sp. I Unidentified immature Unionidae I I I I I

• Recent literature relegated all fiorth American Corbicula to be Corbicula fluminea.

DUQUESNE LIGHT COMPANY 1986 ANNUAL ENVIRONMENTAL REPORT similar to that observed during previous preoperational (1973 through 1975) and operational (1976 through 1985) years. The macroinvertebrate asserrblage during 1986 was composed primarily of burrowing organisms typical of soft unconsolidated substtites. Oligochaetes (worms) and chironomid (midge) larvae were abundant (Tables V-B-2, V-B-3, and V-B-4). Common genera of oligochastes were Limnodrilus, Nais, and Pristina. Common genera of chironomids were Procladius, Cryptochironomus, and Chironomus. The Asiatic clam (Corbicula), which was collected from 1974 through 1978, has been collected in the 1981 through 1986 surveys. None were collected during 1979 or 1980 surveys. No ecologically important additions of species were encountered during 1986 nor were any threatened or endangered species collected. Community Structure and Spatial Distribution Oligochaetes accounted for the highest pe rcentage of the macroinverte-beates at all sampling stations in both May and September (Figure V-B-2). Density and species composition variations observed within the DVps study area were due primarily to habitat differences and the tendency of cer-tain types of macroinvertebrates (e.g., oligochaetes) to cluster. Over-all, abundance and species composition throughout the study area were similar. In general, the density of macroinvertebrates during 1986 was lowest at Transect 2A and higher at Transects 1, 2B, and 3 where substrates near the shore were composed of sof t mud or various combinations of sand and silt. The lower abundance at Transect 2A was probably related to sub-strate conditions (clay and sand) along the north shore of Phillis Island. i comparison of Control and Non-Control Stations No adverse impact to the benthic community was observed during 1986. This conclusion is based on a comparison of data collected at Transect 1 (Control) and 2B (Non-Control) and on analyses of species composition and i densities. 25

l i TABLE V-B-2 i I 2 MEAN MIBBER OF MACROINWRTEBRATES (Number /m ) Alm PERCENT CCBEFOSITION l l OF OLIGOCHAETA, CHIRONOMIDAE, 9mLLUSCA AND OTHER ORGANISMS,1986 i BVPS STATION 1 2A 2B 3 2 2 2 2 t/m 4 9/m 4 8/m 8 0/m 8 DE May 13 I g$ 011gochaeta 601 100 178 95 849 88 741 97 Chironomidae 10 5 92 9 10 1 < r-u Mollusca 7 1 9E Others 21 2 10 1 $5 Fi n 2 s -{ Totals 601 100 188 100 969 100 761 99 l

o l

Septa =her 15 Q l O l 011gochaeta 789 93 464 67 435 46 1,390 97 l Chironomidae 30 4 196 28 277 29 50 3 l Mollusca 20 2 30 4 184 20 Others 10 1 47 5 Tbtals 849 100 690 99 943 100 1,440 100 _~ s-

DUQUESNE LIGiff COMPANY 1986 ANNUAL ENVIRONMENTAL REPORT 'mBLE V-B-3 2 BENTHIC MACR 0 INVERTEBRATE DENSITIES (Individuals /m ), MEAN OF TRIPLICATE FOR BACK CHANNEL AND DUPLICATE SAMPLES COLLECTED IN THE MAIN CHANNEL ORIO RIVER, MAY 13, 1986 BVPS STATION Taxa 1 2A 2B 3 Entoprocta Federieella sp. + Annelida 011gochaeta eggs + Dero sp. 7 Nais bretscheri 7 Nais elinquis 128 26 J Nais sp. 10 33 Paranais frici 13 10 Branchiura sowerbyi 7 Limnodrilus claparedianus 20 Limnodrilus hof fmeisteri 266 171 277 Limnodrilus udekemianus 79 20 20 l Immatureo w/o captiliform chaeta 226 40 519 114 l Inmatures w/ capilliform chaeta 30 26 20 l Arthropoda Amphipoda Camarus sp. 7 Odonata Comphus sp. 7 Ephemeropters Hexaqenta sp. 7 Diptera Chironomus sp. 20 10 Cladepalma sp. 13 Cryptochironomus sp. 26 Polypadilum sp. 7 Tanytarsus sp. 10 Coelotanypus sp. 13 Procladius sp. 13 Ce ratopogonidae 10 Mollusca Sphaerium sp. 7 Total 601 188 969 761 o Indicates organisms present. ( 27

1 I I DUQUESNE LIG7ff COMPANY j 1986 AIGfUAL ENVIRONMENTAL RETCRT i i i MBLE V-B-4 2 BENTHIC MACROINVERTEBRATE DENSITIES (Individuals /m ), MEAN OF TRIPLICATE I FOR DACK CHAltlEL AND DUPLICATE SAMPLES COLLECTED IN WE MAIN CHANNEL i ORIO RIVER, SEPTEMBER 15, 1986 i BVPS l j STATION Tawa 1 2A 28 3 t i Platyhelinthes l l Rhabdocoela 7 i i Entoprocta 3 Pederieella sp. + i Cnidaria l Nydra sp. 26 Annelida I Oligochaeta eggs + } Dero sp. 7 ) Nats sp. 10 l Pristina osborni 30 7 20 ] Aulodrilus limnobius 72 Autodrilus piqueti 10 i 4 { Branchiura sowerbyi 39 10 7 20 i Limnodrilus cervix 10 10 m od tu f is 50 100 33 35 Limnodritus udekemianus 69 10 98 Inunature w/o capilliform chaetae 621 246 289 818 Inunature w/ capilliform chaetae 10 40 20 40 i Arthropoda jl Amphipoda Canunarus sp. 10 7 i ~ Tricoptera l Oecetis sp. 7 Diptera chironomus sp. 88 151 10 Cladopelma sp. 7 l Cryptochironomus sp. 30 39 20 Harnischia sp. 20 Polypedilum sp. 13 10 j Tanytarsus sp. 10 j Coelotanypus acapularis 7 i Procladius sp. 39 99 10 Mollusca 1 Corbicula fluminaa 20 20 184 Pisidium sp. 10 Total 849 690 943 1,440 j o Indicates organisms present. i I \\ 28 i J

as5E sOe n Ed

1. $E" E o!g4 N oN 6

8 9 1 5 8 9 1 4 8 ~ 9 1 3 8 Y p 9 T 1 I S N 2 R U t 8 A 2 9 1 E rO S Y CGR NA 1 8 L SIE 9 A ORY 1 N HU 0 O TDL N A I 6 T ESN 9 A BPO 1 R VI 3 E EBT 7 P 2 H A 9 O TRR B AE 5 FEP 8 V ONOS 7 P 9 E NRDV R CENB 1 U IVA 7 G TI 7 I IRL 9 F S A 1 OON PIO 6 MHI 7 OOT 9 C A 1 ER THE NTP S E O E 5 R CNE A AS 7 A RIR T DR 9 E E P EI 1 E Y P AM H 4 T 7 L N MO C N 9 A A O OO N E 1 P G R L 3 I I O I LHL 7 T OCA 9 A 1 R 2 E I EE 7 P - O 0 - l 7 E 9 R 1 P 0 0 0 0 0 0 0 0 0 0 O 0 9 8 7 6 5 4 3 2 1 1 N5$Obg r6 ) I

DUQUESNE LIGHT COMPANY 1986 ANNUAL ENVIRONMENTAL REPORT Data indicates that oligochaetes were usually predominant throughout the study area (Figure V-B-2). Aoundant taxa at Transects 1 and 2D in both May and September were immature tubificids without capilliform chaetae (Tables V-D-3 and V-D-4). In May, the oligochaetes which were common or abundant at both stations were Limnodritus hof fmeisteri and Limnodrilus udekemianus. In September, the oligochaetes Limnodritus hof fmeisteri, and Branchlura sowerbyi, and the clam Corbicula fluminia were the common organism collected at both stations. In May and September 1986, a greater diversity of organisms were col-1ected at Non-Control station 28 than at Control station 1 (Table V-B-5). I This has occurred several times during past surveys. The mean number of taxa and Shannon-Weiner indices for thu back channel were within the range of values observed for other stations in the stud / area. Differ-ences observed between Transect 1 (Control) and 2B (Non-Control) and between other stations could be related to differences in habitat. None of the differences were attributed to DVPS operation. Comparison of Preoiv rational and operational Data Composition, percent occurrence and overall abundance of macroinverte-bestes han changed little from preoperational years through the current study year. 011gochaetes have been the predominant macroinvertebrate in the comunity each year and they comprised approximately 85% of the individuals collected in 1986 (rigure V-D-2). A similar oligochaete assemblage has been reported each year. Chironomids and mollusks have composed most of the remaining fractions of the community each year. The potential nuisance clam, Corbicula, had increased in abundance from 1974 through 197f, but declined in number during 1977. Since 1981, Corbicula have been collected in the benthic surveys including 1986. Total macrotnvertebrate densities for Transect 1 (Control) and 2D (Non= Control) for each year since 1973 are presented in Table V-D-6. Mean densities of macrotnvertebrates grad. ally increased from 1973 through 1976 (DVPd Unit i start-up) through 1983. The 1986 data, although show-ing no increase, is well within the range of pre-operational and opera-30

DUQUESNE LIGiff COMPANY 1984 AIGIUAL ENVIRONMENTAL REPORT msLE V-B-5 MEAN DIVER $17Y VALUES FOR BEffrNIC MACROINVERTEBRATES COLLBCTED IN Tf!E ORIO RIVER,1986 BVPS STATION 1 2A 28 3 DATE: May 13 No. of Taxa 4 3 10 5 shannon-Weiner Index 1.44 1.07 1.89 1.35 Evenness 0.80 0.70 0.74 0.58 DATE: September 15 No. of Taxa 6 10 9 10 shannon-Weiner Index 1.44 2.85 2.13 1.77 Evenness 0.53 0.04 0.77 0.61 l i 31 I I h t t

-s- . -+ DUQUESNE LIGHT COMPANY 1986 ANNUAL ENVIRONMENTAL REPORT "l I 2 I g ~ ~' I i E "I i E I 1 "I a a a l 5 b g a a a a. ~ a a 8l ( j y a a ,I n ,I 1 "l 3 3 1 3 ~ "I 3 1 1 g. C 3 2 ~- ~j ' l al A 2 1 3 a e ( 3 J l 1lst8 i ~ -i s ( ( s a 8l al 2 i i a a g a a a a ~ ~l j, E 5 1 I l W 81 1 1 5 ( t a a ~l 3 i E I 5 "I A 1 E E 5 g a a ~l I I I 3 1 e i * -l ( 8 1 o } Rl 3 f'g $I3I E 3 i t f ~-1 i j E52S 2 i al IS $1 5E A .~ -l A 2*68 Ai l$IIih j 32

9 DUQUESNE LIGHT COMPANY 1986 ANNUAL ENVIRONMENTAL REPORT tional year data. Mean densities have frequently been higher in the back channel of Phillis Island (Non-Control 28) as compared to densities at Transect 1 (Control). In years such as 1986 (also 1984,1983,1981,1980, 1979) when mean densities were lower at Transect 28 than at Transect 1 the differences were negligible. These differences could be related to substrate, variability, and randomness of sample grabs. Higher total l densities of macroinvertebrates in the back channel (Transect 2a) as compared to Transect I was probably due to the morphology of the river. Mud, silt sediments, and slow current were predominant at Transect 2B i creating conditions more favorable for burrowing macroinvertebrates in comparison to Transect 1, which has little protection from river currents and turbulence caused by connercial boat traffic. l sumsary and conclusions i substrate was probably the most important factor controlling the dis-tribution and abundance of the benthic macroinvertebrates in the Ohio i l River near BVPS. Soft muck-type substrates along the shoreline were l conducive to worm and midge proliferation, while limiting macroinverte-brates which require a more stable bottom. At the shoreline stations, l 011gochaeta accounted for 85% of the macrobenthos collected, whereas 4 Chironomidae and Mollusca each accounted for about 10% and 4% respec-i tively. Community structure has changed little since preoperational years and there was no evidence that BVPS operations were affecting the benthic community of the Ohio River. j i i l 4 l l i 1 i 33

DUQUESNE LIGRT COMPANY 1986 ANNUAL ENVIRONMENTAL REPORT C. PHYTOPLANKTON obiectives Plankton sampling was conducted to determine the condition of the phy-toplankton community of the Ohio River in the vicinity of the BVPS and to assess possible environmental impact to the phytoplankton resulting from the operation of Unit 1. Methods ) One entrainment sample was collected monthly. Each sample was a one-gallon sample taken from below the skinumer wall from one operating intake bay. This one-gallon sample was preserved with Lugol's solution and was used for the analyses of both phytoplan,.mn and zooplankton. In the laboratory, a known aliquot of well-mixed sample was concentrated by settling. A measured aliquot of the concentrate was placed in an inverted microscope chamber and examined at 400X magnification. A mini-mum of 200 cells were identified and counted in each sample. For each 1 collection date, volume of the final concentrate was adjusted depending on cell density. A Hyrax diatom slide was also prepared monthly from each sample. This slide was examined at 1000X magnification in order to 4 make positive indentification of the diatoms. Densities (cells /ml), Shannon-Weiner and evenness diversity indices 1 (Pielou 1969), and richness index (Dahlberg and Odum 1970) were calcu-l lated for each monthly sample. i Seasonal Distribution Total cell densities of phytoplankton from stations on the Ohio River and in the intake samples have been similar during the past years (Annual Environmental Reports 1976-1985). Species composition has also been similar in entrainment samples and those from the Ohio River (DLCo 1980). 1 Therefore, samples collected from the intake bays should provide an ade-i quate characterization of the phytoplankton conununity in the Ohio River. l 34 i

DUQUESNE LIGHT COMPANY 1986 ANNUAL ENVIRONMENTAL REPORT During 1986, the January, February, and March samples had phytoplankton densities of 378 to 656 cells /ml (Table V-C-1 and Figure V-C-1). Total mean densitias increased in April. Densities peaked in May, August, and September and decreased in November and December (Table V-C-1) to 359 cells /ml (Figure V-C-1). Diatoms (Chrysophta), green algae (Chlorophyta) and blue-green algae (Cyanophyta) were generally the most abundant groups of the phytoplankton during 1986 (Table V-C-1 and Figure V-C-2). The relative abundance for the group microflagellates was highest in March, when it composed 33% of the total numbers observed. Relative densities of blue-green algae (Cyanophyta) were highest during September (53%) (Table V-C-1). Diversity indices for the phytoplankton during 1986 are presented in Table V-C-2. Shannon-Weiner indices ranged from 1.50 to 4.48, evenness values from 0.29 to 0.85, and richness values from 3.72 to 9.58. High diversity values occurred in 11 of the 12 months. The lowest value for Shannon-Weiner Index occurred in Aprilt however, the lowest number of species occurred in January when microflagellates and Synedra tenera (Chrysophyta) were predominant. Highest number of taxa (68) occurred in November. Phytoplankton communities were generally dominated by different taxa each season. The most abundant taxa during winter (January through March) were microflagellates, Synedra tenera, Navicula viridula and small cen-tric-diatoms (Table V-C-3). In April and May, small centric diatoms (Chrysophyta) were most abundant. Sma!.1 centric diatoms, which were present in all phytoplankton samples, were most abundant in the spring and in August. They included several small (4 to 12 um dia.) species. Positive species identification was not possible during quantitative analysis at 400X magnification. Burn mount analysis at 1000X magnifica-tion revealed the group "small centrica" included primarily Cyclotella atomus, C. pceudostelligera, C. meneghiniana, Ster,hanodiscus hantzschit, a nd _S_. a s t rae a. Dictyosphaerium pulchellum (Chlorophyta) and Microcystis incerta (Cyanophyta) were the most abundant species in August and September respectively. .Small centrics and microflagellates were the most abundant organisms collected in November and December. 35

. - - -. ~. 4 TABLE V-C-1 MONTHLY PHYTOPLANKTON GROUP DENSITIES (Number /ml) AlO PERCENT COMPOSITION / FROM ENTRAINMENT SAMPLES, 1986 BVPS i f Jan Feb Mar Apr May Jun j Group 9/ml 4 8/ml 4 9/ml 8/ml n 9/ml n 8/a1 7 ) ~ Chlorophyta 144 25 62 16 82 13 141 2 6,366 39 526 17 Chrysophyta 233 40 268 71 336 51 5,985 84 7,197 44 2,028 67 Cyanophyta 66 11 20 5 18 3 11' <1 468 3 44 1 i DE -i j Cryptophyta 6 1 2 1 4 1 316 4 1,230 8 170 6 Microflagellates 125 22 24 6 216 33 658 9 1,014 6 240 8 @U g$ Other Groups C 1 2 1 0 0 0 0 18 <1 0 0 <e u Total 58 0 100 378 100 656 101 7,111 99 16,293 100 3,008 99 55 hN Ga Jul Aug Sep Oct Nov Dec Hk $g Group 9/ml 4 9/ml 9/ml 4 8/ml n 9/ml 4 t/mi t

= <

i Chlorophyta 2,7 09 38 9,048 46 5,184 26 600 14 126 12 22 6 Chrysophyta 3,270 46 9,104 4C 3,183 16 1,725 41 682 63 230 64 O" Cyanophyta 546 8 1,008 5 10,548 53 1,245 29 10 1 15 4 Cryptophyta 486 7 611 3 687 3 432 10 30 3 20 6 Microflagellates 39 1 0 0 351 2 232 5 240 22 72 20 Other Groups 18 <1 0 0 0 0 5 <1 0 0 0 0 1 I Total 7,063 100 19,771 100 19,953 100 4,239 99 1,088 101 359 100 .i 4

DUQUESNE LIGHT COMPANY ANNUAL ENVIRONMENTAL REPORT JAN-JUL l974, AUG-0CT l97481975, NOV-DEC 1975 20*000 - AVERAGE 1976-1985 1996 18,000 - 10,000 - i4,000 - 2: W Ps b 17,000 - 1 N s d j h t j \\ r / E / \\ / \\ s 10,000 - I \\ / \\ / v \\ -j / W 4 / i ,I 'g I \\ 8,000 - l\\ l \\ ! \\ l \\ I g g / \\ 6,0 0 0 - i s i r l \\ \\ ~ g l \\ \\ l 4,000 - I I \\ I g g l \\ o \\ i s i 2,000 - I \\ g g j l / g l ,/ g \\ v ^ O J F M lA lM lJ lJ lA lS l0 lN l0 l MONTH FIGURE V-C-1 MONTHLY PHYTOPLANKTON DENSITIES IN THE OHIO RIVER DURING PREOPERATIONAL (1974-1975) AND l OPERATIONAL (1976-1986) YEARS I BVPS j 37 i

DUQUESNE LIGHT COMPANY ANNUAL ENVIRONMENTAL REPORT a---* CRYPTOPHYTA 8 MICR0 FLAGELLATES I8,000 - CHRYSOPH YT A CYANOPHYTA e e 10,000 - W I f

• I.

I 9,000 - I l i I 8,000 - ltg i i1 l ta j l I

• A I

7,000 - fg i / I gi 5 ll l j = l s I I 6,000 - / l l g a i l L\\ ~ 2 g g f !g l lg i I I 3 5,000 - I I I ? i t L ? I I a I w I I g { U 1 g l I t I i I 4,000 - I I L \\ l \\ I i l I l ? i -l I i l t ,0 \\$ i \\ 3,000 - I ) f e g I ) / \\ l t / \\ l/ e I I/ l a e 2,000 - ,I V [ l 1 k I ,i 1.\\ \\ \\. \\ l,000 - I e f

,/

\\\\ i . >. 4,/\\',- .s s J l F l M l A IM iJ iJ iAi S i oiN i O 1 MONTH l l l i FIGURE V-C-2 PHYTOPLANKTON GROUP DENSITIES FOR ENTRAINMENT SAMPLES, 1986 BVPS 38

l TABLE V-C-2 PHYTOPLANKTON DIVERSITY INDICES BY MON'lif FOR ENTRAINMEMP SAMPLES, 1986 BVPS Date Jan Feb

Mar, Apr May Jun No. of Species 31 39 42 34 45 60 4

Shannon-Weiner Index 3.79 4.48 3.73 1.50 4.04 3.78 Evenness 0.77 0.85 0.69 0.29 0.74 0.64 na Richness 4.54 6.40 6.32 3.72 4.54 7.37 z pi en H N$ Jul Aug Sep Oct Nov Dec X $O No. of Species 56 48 60 54 68 48 49 EO

h. h Shannon-Weiner Index 4.04 3.94 4.21 4.01 4.44 4.40 3.86 i

h Evenness 0.69 0.70 0.71 0.70 0.73 0.79 0.69 H Richness 6.20 4.75 5.96 6.34 9.58 7.99 6.14 4 l 1

TABLE V-C-3 DENSITIES (Number /ml) OF MOST ABUNDAW PHYTOPIANKTON TAXA (Fifteen Most Abundant On Any Date) COLLECTED FROM ERRAIMEW SAMPLES JANUARY 11tR0tGI DECEMBER 1986 BVPS Taxa Jan Feb Mar M My Jun Jul M M Oct Nov Dec CYANDPHYTA + Aphanirnmenon flos-aquae J24 396 20 Coelosphaerium kuetzingianum 1,920 Merismopedia tenuissima 288 960 e g Microcystis aeruginosa 400 1,000 Microcystis incerta 6,000 200 Oscillatoria spp. 6 h Schtrothrix calcicola 66 12 18 11 144 38 18 234 948 45 6 7 g CHLOROPHYTA >M Fy am Actinastrum hantrschii 8 108 8 198 12 8 'g Ankistrodessus convolutus 22 11 1,602 38 168 590 132 65 8 2 HH d Ankistrodessus falcatus 16 2 14 306 14 168 108 50 10 5 WO O Chlamydomonas spp. 2 9 14 36 10 59 12 20 2 1 h Chlorophyta I 14 12 47 70 390 32 273 472 663 87 48 n Coelastrum microporum 16 144 64 192 720 288 $O Dictyosphaerium pulchelium 48 504 108 4,572 384 20 Micractinium pusillum 720 10 156 360 96 10 Fg Pediastrum duplex 64 240 192 g4 Scenedessus acuminatus 216 72 144 20 12 m scenedessus bicellularis 468 32 702 1,092 58 scenedessus denticulatus 4 72 8 24 72 48 5 16 W scenedessus dimorphus 4 216 34 48 10 4 H scenedessus opollensis 60 306 204 40 scenedessus quadricauda 8 8 14 1,242 88 306 522 696 100 8 8 Selenastrum minutum 18 64 295 156 15 Sphaerocystis schroeteril 48 48 144 Tetrastrum staurogeniforniae 16

TABLE V-C-3 (Continued) Taxa Jan Feb Mar AEr

May, Jun Jul Aug Seg Oct Nov Dec CHRYSOPHYTA Astertonella formosa 4

10 12 126 2,016 20 6 10 2 22 Diantoma tenue 2 108 2 Dinobryon sertularia 2 4 14 54 2 10 6 Fraattaria crotonensis 34 20 306 2 36 228 Frustula rhomboldes 8 Gnaphonema parvulum 24 14 7 2 8 5 Melostra ambigua 40 34 4 54 10 270 156 155 134 1 oo pelostra distans 28 4 4 18 150 108 108 145 34 Ch Melostra gramilata 12 564 174 1,746 552 240 106 16 > ts Melostra varians 4 4 7 8 30 24 16 h? CO Navicula cryptocephala 6 18 28 29 18 16 12 18 10 6 21 c:(! Navicula viridula 4 34 66 50 72 50 30 18 26 21 3* D1 Nitzschia acicularis 12 2 47 378 30 48 108 15 14 2 'E! Nitzschia capite11ata 4 6 48 20 5 @d r* D1 Nitzschia dissipata 2 18 4 12 5 2 6 Nitzschia bolsetica 36 60 126 60 5 18 1 d d "!$ "hh f) Nitzschia palea 2 4 4 4 18 6 6 54 48 10 10 6 Skeletonema potamos 78 36 546 7 08 232 32 83"i Stephanodiscus hantzschit 18 1,620 420 {C} (1 Suricella ovata 12 18 4 2 2 4 Synedra tenera 84 2 7 ,4bb Synedra ulna 4 2 4 54 4 96 22 7 E' E* g Synura uvella 2 10 2 47 2 6 8 6 20 M Small centrics 62 24 94 5,499 3,861 640 2,106 4,130 1,131 783 112 56 [0 0 CRYPTOPHYTA h cryptomonas erosa 2 2 4 58 216 58 96 198 180 55 18 13 Rhodomonas minuta 4 258 1,014 112 390 413 507 377 12 7 MICROFLAGELLATES 125 24 216 658 1,014 240 39 351 232 240 72 Total Phytoplankton 597 378 656 7,111 16,293 3,008 7,068 19,771 19,953 4,239 1,088 359 Total of Most Abundant Taxa 579 338 608 7,069 15,411 2,330 6,666 18,889 18,360 4,039 980 310 Percent Composition of Most Abundant Phytoplankton 97 89 93 99 95 77 94 96 92 95 90 86

DUQUESNE LIGHT COMPANY 1986 ANNUAL ENVIRONMENTAL REPORT Comparison of Control and Non-Control Transects Plankton samples were not collected at any river stations after April 1, 1980, due to a reduction in the scope of the aquatic sampling program, therefore, comparison of data was not possible in 1986. Comparison of Preoperational and Operational Data The seasonal succession of phytoplankton varied from year to year, but, in general, the phytoplankton taxa has remained generally consistent. Phytoplankton communities in running waters respond quickly to changes in water temperature, turbidity, nutrients, velocity and turbulence (Hynes 1970). The phytoplankton from the Ohio River near BVPS generally exhib-ited a bimodal pattern of annual abundance. During the preoperational year 1974, total densities peaked in August and October, while in opera-tional years of 1976 through 1979, mean peak densities occurred in June and September (DLCo 1980). Total phytoplankton densities also displayed a bimodal pattern in 1986, when peaks occurred in May and September (Figure V-C-1). In general, the phytoplankton community in 1986 was similar to those of preoperational and operational years. No major change in species compo-sition or community structure was observed during 1986. The small dif-ferences in the phytoplankton community between 1986 and the previous years are believed to be due to natural fluctuations and were not a result of BVPS operations. Shannon-Weiner, evenness, and richness diversity values were unusually low in April when the phytoplankton was strongly dominated by small cen-1 tric diatoms. Centric diatoms frequently develop high densities in large rivers during the spring. Yearly mean Shannon-Weiner diversity indices from 1973 through 1986 were similar (except during 1973 when the value i was much lower) ranging from a low of 1.50 in 1986 to a maximum of 4.48 in 1986 (Table V-C-4). Evenness values were also similar, except during l 1973, 1974 and April 1986 when values were lower. From 1975 through i 1986, evenness ranged from 0.64 to 0.85. 42 I

TABLE V-C-4 PHYTOPLANKTON DIVERSITY INDICES (HEAN OF ALL SAMPLES 1973 TO 1986) NEW CUMBERLAND POOL OF THE OHIO RIVER BVPS Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Y 1973 No. of Specieg,) 7 2 13 24 27 28 30 24 17 16 19 = Shannon Index 1.55 0.54 No 0.63 1.64 2.28 3.55 3.72 No 3.37 3.25 3.27 2.38 Evenness 0.33 0.15 Sample 0.11 0.25 0.35 0.55 0.52 Sample 0.50 0.54 0.53

0. 38 Richness 1.24 0.29 1.50 2.63 3.17 3.61 3.46 3.24 2.89 2.80 2.48 1974 No. of Speclec 12 8

17 22 44 46 47 60 34 47 34 Shannon Index 2.96 2.23 3.18 3.50 4.89 4.40 4.03 4.25 3.85 5.02 3.83 No Sample Eveness 0.55 0.46 0.57 0.58 0.62 0.62 0.56 0.55 0.54 0.58 0.56 Richness 2.55 1.82 3.05 3.74 5.56 5.45 5.46 6.49 4.77 5.44 4.43 l$ cn 1975 Ch No. of Species 52 34 43 32 40 40 g;tj Shannon Index 4.53 4.22 4.37 4.22 4.48 4.36 o x3 Evenness No Sample 0.80 0.83 0.81 0.87 0.85 0.83 d c: Richness 5.57 3.96 4.89 3.92 6.19 4.91 !O E! t sc 4 1976 $E F3 Ld No. of Species 31 35 31 38 47 49 46 43 38 33 35 38 39 ad r* Shannon Index 3.98 4.36 3.90 4.25 4.14 4.27 4.28 4.30 3.93 4.16 4.24 4.45 4.19 $$E$ i Evenness 0.80 0.85 0.78 0.81 0.75 0.76 0.78 0.80 0.75 0.83 0.83 0.85 0.89 C) Dc Richness 5.15 5.89 4.92 4.70 4.68 4.79 4.72 4.34 3.85 4.17 4.95 5.79 4.83 $E"i ni r1 1977 3$$$ No. of Species 20 28 31 24 36 30 44 39 37 32 33 27 32

• • "d Shannon Index 1.96 3.31 3.00 2.78 4.16 3.52 4.36 4.26 4.29 3.92 4.12 4.00 3.64 Evenness 0.44 0.70 0.61 0.60 0.80 0.72 0.80 0.81 0.82 0.78 0.82 0.83 0.73 28 Richness 3.14 4.57 4.44 2.95 3.53 2.77 4.63 4.26 3.87 3.98 4.18 3.72 3.84

!0 0 1978 [$ No. of Species 37 29 32 42 28 42 36 37 35 37 34 32 35 Shannon Index 4.08 3.68 3.77 4.67 3.30 4.16 3.95 4.17 3.81 3.99 3.80 4.44 3.99 Evenness 0.78 0.76 0.76 0.87 0.69 0.78 0.77 0.80 0.76 0.77 0.76 0.90 0.78 Richness (b) 1979 No. of Species 18 16 19 36 34 27 34 24 29 25 2P. 38 27 Shannon Index 3.49 3.36 3.79 3.22 3.78 3.84 4.10 3.88 4.12 4.07 3.68 4.32 3.80 4 Evenness 0.84 0.82 0.88 0.62 0.74 0.81 0.80 0.84 0.84 0.88 0.77 0.83 0.81 Richness 2.97 2.64 3.36 4.69 4.08 2.98 3.46 2.72 3.26 3.52 3.57 5.19 3.54 i 1

m _ m. TABLE V-C-4 (Continued) Jan Feb Mar Apr May Jun Jul A Sep Oct Nov Dec Y C 1980 C of Species 28 18 24 25 21 18 30 16 32 24 33 37 24 Shannon Index 3.88 2.64 3.78 3.82 3.28 3.26 3.61 3.45 4.10 3.54 3.71 4.56 3.57 Evenness 0.81 0.64 0.83 0.82 0.75 0.78 0.74 0.86 0.82 0.77 0.74 0.87 0.78 Richness 4.07 2.65 3.49 4.02 2.50 2.38 2.90 1.94 3.33 2.59 4.01 5.40 3.15 1981 4 No. of Species 22 35 37 39 34 33 33 51 35 27 40 32 35 Shannon Index 3.92 4.39 4.39 2.29 3.66 4.56 4.13 4.59 i:.07 3.90 4.00 4.32 3.95 Evenness 0.88 0.85 0.84 0.43 0.72 0.90 0.82 0.81 0.79 0.82 0.75 0.86 0.79 Richness 3.91 5.84 6.10 4.58 3.69 4.61 3.73 5.76 3.85 3.56 5.00 4.55 4.60 1982 No. of Species 51 41 46 22 55 45 66 54 53 35 50 49 47 G Shannon Index 4.68 4.80 4.96 1.88 4.79 4.33 4.72 4.54 4.22 3.97 4.09 4.66 4.30 00 Evenness 0.82 0.90 0.90 0.42 0.83 0.79 0.78 0.79 0.74 0.77 0.72 0.83 0.77 Richness 7.17 6.43 6.88 2.36 6.15 4.96 6.65 5.33 5.23 3.61 5.36 6.23 5.53 gg 1983 No. of Species 36 42 51 52 25 42 37 40 37 45 37 52 41 Shannon Index 4.27 4.01 4.60 4.74 3.67 4.41 4.16 4.28 3.56 3.51 4.17 4.72 4.18 25 e Evenness 0.82 0.74 0.81 0.83 0.79 0.82 0.80 0.80 0.68 0.64 0.80 0.83 0.78 EM 4:- Richness 5.17 6.45 7.35 6.64 2.98 4.18 3.63 4.17 3.83 4.46 4.38 6.48 4.98 < ta HH 1984 oO No. of Species 31 60 36 46 41 51 57 54 51 53 54 44 48 yd Shannon Index 4.02 4.89 4.30 3.06 4.37 4.48 4.34 4.03 4.38 4.00 4.59 4.10 4.21 mn @E O Evenness 0.80 0.83 0.82 0.55 0.81 0.79 0.74 0.70 0.77 0.70 0.80 0.75 0.76 Richness 5.05 8.95 6.54 6.98 5.55 6.41 7.29 5.97 5.43 5.70 7.10 6.71 6.47 t* g 1985

xs 4 W of Species 41 38 53 39 46 52 53 58 50 61 50 39 48 Q

Shannon Index 3.80 3.31 4.44 3.88 4.24 2.95 4.16 4.28 3.59 2.57 3.15 3.26 3.56 o Evenness 0.71 0.63 0.78 0.56 0.77 0.52 0.72 0.73 0.63 0.43 0.55 0.61 0.64 Q Richness 6.42 5.75 8.48 5.25 4.71 5.12 6.83 6.14 5.40 6.09 6.70 5.88 6.06 1%6 C of Species 31, 39 42 34 45 60 56 48 60 54 68 48 49 Shannon Index 3.79 4.48 3.73 1.50 4.04 3.78 4.04 3.94 4.21 4.01 4.44 4.40 3.86 Evenness 0.77 0.85' O.69 0.29 0.74 0.64 0.69 0.70 0.71 0.70 0.73 0.79 0.69 Richness 4.54 6.40 6.32 3.72 4.54 7.37 6.20 4.75 5.96 6.34 9.58 7.99 6.14

• Shannon-Weiner Index (b)No data j

IC} Data for period April 1980-December 1986 represents single entrainment samples collected monthly.

DUQUESNE LIGHT COMPANY 1986 ANNUAL ENVIRO! MENTAL REPORT The maximum evenness diversity value is 1.0 and would occur when each species is represented by the same number of individuals. The mean number of taxa each year ranged from 19 in 1973 to 49 in 1986. The highest number of taxa (68) ever observed in phytoplankton studies at BVPS occurred during November of operational year 1986. Summary and Conclusions The phytoplankton community of the Ohio River near BVPS exhibited a sea-sonal pattern similar to that observed in previous years. This pattern is common to temperate, lotic environments. Total cell densities were within the range observed during previous years. Diversity indices of phytoplankton, except for those in April, were as high or higher than those previously observed near BVPS. i i I I f 45 l

.. ~ 4 DUQUESNE LIGHT COMPANY. 1986 ANNUAL ENVIROIStENTAL REPORT i D. ZOOPLANKTON Obiectives Plankton sampling was conducted to determine the condition of the zoo-plankton community of the Ohio River in the vicinity of the BVPS and to assess possible environmental impact to the zooplankton due to the opera-- tion of Unit 1. l Methods The zooplankton analysis was performed on one liter aliquots taken from the preserved one-gallon samples obtained from the intake bay. (see Phytoplankton methods, in Part C above). One liter from each sample was filtered through a 35 micron (.035 m) mesh screen. The portion retained was washed into a graduated cylinder and allowed to settle for a minimum of 24 hours. The supernatent was withdrawn until 10 ml of concentrate. remained. One al of this thoroughly mixed concentrate was placed in an inverted microscope cell and examined at 100X magnification. All zoo-i plankters within the cell were identified to the lowest practicable taxon and counted. Total density (individuals / liter), Shannon-Weiner and even-ness diversity indices (Pielou 1969), and richness index (Dahlberg and 4 Odum 1970) were calculated based upon one sample, which was collected 4 below the skimmer wall from one operating intake bay. Seasonal Distribution j The zooplankton community of a river system is typically composed of protozoans and rotifers (Hynes 1970, Winner 1975). The zooplankton com-munity of the Ohio River near BVPS during preoperational and operational l monitoring years was composed primarily of protozoans and rotifers. l Total organism density and species composition of zooplankton from the Ohio River and entrainment samples were similar during 1976, 1977, 1978, and 1979 (DLCo 1980). Samples collected from intake bays are usually representative of the zooplankton populations of the Ohio River. During 1986, protozoans and rotifers accounted for 964 or more of all zooplankton on all sample

• dates (Table V-D-1). Total organism densities l

46 l

.= TABLE V-D-1 MONTHLY ZOOPLANKTON GROUP DENSITIES (Number / liter) AND PERCENT COMPOSITION FROM EWPRAINMENT SAMPLES, 1986 BVPS Jan Feb Mar Apr May Jun Group 9/L t 9/L 4 8/L 1 f/L t 9/L 4/L t Protozoa 330 94 330 94 300 83 760 88 1.1,220 79 1,290 78 Rotife ra 20 6 20 6 60 17 100 12 3,060 21 300 18 d os Crustacea 0 0 0 0 0 0 0 0 0 0 60 4 Q D8 Total 350 100 350 100 360 100 860 100 14,280 100 1,650 100 NC 0 E0 g Jul Aug Sep Oct Nov Dec $o Group 4/L 4 8/L 4 f/L t 9/L 9/L t 8/L 4 g h Protozoa 5,970 93 7,520 68 9,780 66 1,680 93 490 83 305 87 Rotifera 330 5 3,280 30 4,560 31 120 7 100 17 45 13 Crustacea 90 1 240 2 420 3 15 1 0 0 0 0 Total 6,390 99 11,040 100 14,760 100 1,815 101 590 100 350 100

DUQUESNE LIGHT COMPANY 1986 ANNUAL ENVIRONMENTAL REPORT during the winter and early spring (January through March) were less than 361/ liter (Figure V-D-1, Table V-D-1). Total organism densities increased in April and peaked (14,000/ liter) in May and September. Zoo-plankton populations in the Ohio River usually exhibit a bimodal pattern. The maximum zooplankton density in the Ohio River near BVPS frequently occurs in the spring, although it is sometimes delayed until sumer or early fall (Table V-D-2, Figure V-D-1). Low precipitation in late summer provided optimum conditions for zooplankton populations to develop in August and September. The effect of a dry year and low river discharges was noted by Hynes (1970) to favor plankton populations. The seasonal pattern of zooplankton densities observed in the Ohio River near BVPS is typical of temperate climates (Hutchinson 1967). Zooplank-ton densities in winter are low due primarily to low water temperatures and limited food availability (Winner 1975). In the spring, food avail-abililty and water temperatures increase, which stimulates growth and reproduction. Zooplankton populations decrease during the fall and win-ter from the summer maximum because optimum conditions for growth and reproduction decrease during this period. Densities of protozoans during January through March of 1986 were between 350 and 360/ liter (Table V-D-1). Protozoans increased in April, peaked in May, decreased in June and increased in September. Protozoans pro-gressively decreased in October and November to densities to 350/ liter in December. Vorticella sp. and Strobilidium spp. were the common proto-zoans throughout the year. Vorticella sp. dominated the protozoan assem-blage during seven months (Table V-D-3). The most abundant protozoa in ) the other months were Nuclearia (May) and Codonella (July). These taxa have been a main part of the protozoan assemblage of the Ohio River near BVPS since the studies were initiated in 1972. The rotifer assemblage in 1986 (Figure V-D-2) displayed a typical pattern of rotifer populations in temperate inland waters (Hutchinson 1967). Rotifer densities increased from a minimum of 20/ liter in January and February to a maximum of 4,560/ liter in September and a secondary peak in 48

DUQUESNE LIGHT COMPANY j ANNUAL ENVIRONMENTAL REPORT JAN-JUL 1974, AUG-CCT 1974 81975, NOV-DEC 1975 AVERAGE 1976-1985 1986 15,000 - f 14,000 - 13,000 - 12,000 - 11,000 - 10,000 - 9,000 - a: N-8,000 - s 3 7,000 - du 6,000 - 5,000 - 4,000 - ,7 o s js h 3,000 - ,/ s,- /

• g 2,000 -

's ,r' 's / \\ I,000 - 5 J IF IM IA lM l J lJ l A lS l 0 I N I O I MONTH FIGURE V-D-1 MONTHLY ZOOPLANK' ION DENSITIES IN THE OHIO RIVER DURING PREOPERATIONAL (1974-1975) AND OPERATIONAL (1976-1986) YEARS BVPS 49

TABLE V-D-2 MEAN ZOOPLANKTON DENSITIES (Number / liter) BY MONT1{ FROM 1973111ROUCH 1986, OilIO RIVER AND BVPS Total Zooplankton Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec (* 1973 50 90 154 588 945 1,341 425 180 87 1974 78 56 96 118 299 625 4,487 3,740 1,120 4,321 1975 4,426 3,621 1,591 2,491 623 1976 327 311 347 10,948 2,516 5,711 3,344 3,296 3,521 518 446 577 1977 147 396 264 393 5,153 4,128 1,143 1,503 3,601 553 9 34 486 1978 31 30 20 35 403 1,861 1,526 800 1,003 435 297 60 1979 357 96 228 534 2,226 599 2,672 4,2 38 950 370 542 550 1980 320 265 389 270 530 420 3,110 490 2,020 3,820 1,030 700 1981 190 360 220 580 840 310 3,800 1,940 4,490 1,850 760 370 1982 400 320 340 880 4,650 1,020 5,630 5,170 5,520 6,410 2,300 1,030 1983 285 330 1,415 540 480 8,220 4,780 6,010 3,280 2,880 950 560 e 1984 270 290 295 290 560 1,520 610 1,380 6,700 6,080 570 390 1985 410 485 255 365 6,520 6,280 1,920 10,000 4,680 4,760 740 570 1986 350 350 360 860 14,280 1,650 6,390 11,040 14,760 1,815 590 350 g@ Protozoa bO E: 0 1973 45 63 82 188 56 331 146 135 58 E 1974 50 42 72 91 1 38 409 1,690 716 1,006 4,195 $M mo 1975 835 3,295 1,141 2,239 452 <F 1976 278 274 305 10,774 1,698 6 1,903 1,676 808 425 396 492 1977 135 365 236 312 4,509 2,048 808 947 2,529 401 825 344 03: 1978 18 14 14 27 332 1,360 407 315 256 222 227 26 1979 312 64 188 380 2,052 459 340 712 609 326 454 328 MO 1980 244 250 354 190 390 370 1,620 380 1,180 3,010 760 640 $9 1981 130 310 180 510 480 230 730 1,250 4,020 1,580 550 330 1982 350 310 310 820 1,300 870 2,360 1,560 1,590 4,850 2,060 980 1983 250 320 315 500 390 6,940 1,320 5,030 1,100 1,670 890 490 Q 1984 225 280 285 260 500 1,190 530 1,210 5,000 5,300 530 360 m 1985 365 455 230 355 3,280 4,440 1,340 6,680 1,860 4,080 670 520 0 1986 330 330 300 760 11,220 1,290 5,970 7,520 9,780 1,680 490 305 Rotifera 1973 5 25 64 388 859 1,001 75 43 27 1974 26 12 22 24 155 213 2,783 2,939 115 120 1975 3,339 313 444 250 164 1976 48 36 38 169 808 4,864 1,398 1,597 2,643 89 48 78 1977 12 31 26 76 631 1,984 328 539 1,022 147 108 136 1978 29 33 15 14 16 24 72 61 67 47 22 48 1979 44 33 37 151 172 135 2,255 3,482 324 42 86 220 1980 72 14 33 80 140 50 1,470 110 790 780 260 50 1981 40 50 40 70 34 0 s80 2,800 630 470 260 210 40 1982 50 10 30 50 3,340 130 3,250 1,550 3,840 1,520 240 40 1983 30 10 1,100 40 90 1,270 3,440 880 1,930 1,190 60 70 1984 45 10 10 30 40 330 80 160 1,700 780 40 30 1985 40 30 25 10 3,240 1,820 580 2,880 2,740 660 70 40 1986 20 20 60 100 3,060 300 330 3,280 4,500 120 100 45

TABLE V-D-2 (Continued) l ] Crustacea Jan Feb Mar Apr May Jun Jul g Sep Oct Nov Dec l 1973 1 1 3 12 29 9 3 2 2 1974 2 2 3 3 6 3 14 85 7 6 1975 51 12 6 3 6 1976 2 1 5 4 10 141 43 23 69 3 2 8 1977 2 5 13 96 7 17 50 5 1 6-1978 4 6 3 2 6 48 12 27 75 9 5 5 1979 1 0 3 3 2 4 78 44 17 2 2 2 1980 3 1 1 0 0 0 20 0 50 30 10 10 1981 20 0 0 0 20 0 270 60 0 10 0 0 I 1982 0 0 0 10 10 20 20 60 90 40 0 10 1983 5 0 0 0 0 10 20 100 250 20 0 0 i 1984 0 0 0 0 20 0 0 10 .0 0 0-0 t 1985 5 0 0 0 0 20 0 440 80 20 0 10 5 1%6 0 0 0 0 0 60 90 240 420 15 0 0 g ti e mo I*INo sample collected, hh ta m i Z l W H ( < t~ i HH i WO o :2 7H l O gO t~ f W4 M O W H i 1 e I 4 f

-m. TABLE V-D-3 DENSITIES (Number / liter) OF MOFF ABUNDANr 2OOPLANRTON TAXA (Greater than 24 on any date) (X)LLECTED PROM EWPRATNMEFF SAMPLES JANUARY THROUGR DECEMBER, 1996 BVPS Taxa Jan Feb Mar M M Jun Jul A3 Sy Oct Nov Dec PROTOZOA Arcella sp. 30 10 60 45 20 10 Askenasta sp. 20 240 780 15 5 C Bursaria sp. 210 320 420 g Codonella cratera 20 20 120 180 2,160 240 840 165 30 15 Colpidium ap. 10 20 20 5 E Cyclotrichtum sp. 70 40 20 20 60 15 5 "D Cyphodera ampulla 20 30 80 20 10 C$ Didinium balblanti 40 30 30 60 m Diffluqta acuminata 10 10 150 360 m$ Difflugia sp. 20 10 g Epistylis sp. 700 ss y solophyrid cillate 10 10 20 50 180 60 150 720 300 90 10 W$ o Lionotus sp. 20 ga Nuclearia simplex 3,420 30 30 240 780 30 oxytrich cillate 10 10 $go Paramecium sp. 10 10 10 5 Rhabdaderna sp. 10 Fp Staurophyra elegans 720 80 60 gk Strobilidium evrans ?00 300 60 15 10 5 M Strobilidium sp. 20 20 240 Ig C90 210 1,620 1,920 1,600 525 120 25 o Suctorian elliate 20 60 30 30 240 W Tintinnidium fluviatile 10 2,58 0 180 300 2,800 1,860 555 10 20 l vortice11a sp. 120 160 150 260 2,460 420 870 640 780 180 250 170 C111 ate unidentified 20 20 30 50 120 60 30 80 180 10 15 RDTTPERA Anuracopsis fissa 30 240 180 30 10 Cephalodella sp. 10 20 Conochilus unicornis 30 30 240 240 serate11a cochlearts 10 10 10 10 360 30 90 720 1,620 45 40 10 Notholca squamula 10 Polyarthra dolichoptera 10 20 1,08 0 60 150 960 1,740 10 Polyarthra vulgaris 10 30 5 4 Synchaeta sp. 10 1,140 80 30 5 Trichocerca pusilla 640 60 Trichocerca rousselet! 30 660 Rotifer unidentified 10 10 20 40 60 60 30 80 20 10 1

4 3 t TABLE V-D-3 (Continued) Taxa Jan Feb Mar M M Jun Jul M Seg Oct Ew Dec I l J TOTAL SOOPIMHtTON 350 350 360 860 14,200 1,650 6,390 11,040 14,760 1,815 590 350 e 10mL of Most Abundant Taxa 350 350 36 0 830 13,800 1,470 6,210 10,320 13,680 1,740 '570 335 Percentage Composition of c Most Abundant Sooplankton 100 100 100 97 97 89 97 93 93 96 97 96 e@ >M V fn 2 M tus F ~M Om E" G8 M

• t3 O

A3 H 4 i t i f 1 f I

DUQUESNE LIGHT COMPANY ANNUAL ENVIRONMENTAL REPORT 12,000 - PROTOZOA ROTIFERA i ^ CRUSTACEA 10,500 - 9,000 - 7,500 - crw b .J 6,000 - w cn5 oz 4,500 - 4 l' /1 / g / g / / \\ I 3,000 - p / g I I I \\ I\\ l \\ I \\ l \\ ~ / \\ l \\ I \\ f \\ 1,500 - I \\ / l I \\ g \\ l \\ \\ I \\ t t I \\ I \\ L_J \\ ^ i 0 J lF lM lAlMlJ lJ lAlSIOlNlDj MONTH FIGURE V-D-2 ZOOPLANKTON GROUP DENSITIES t FOR ENTRAINMENT SAMPLES, 1986 BVPS 54 l

DUQUESNE LIGHT COMPANY 1986 ANNUAL ENVIRONMENTAL REPORT May (Table V-D-2). Rotifer populations generally decreased after September to densities of 45/ liter in December. Rotifers were the second most abundant group during 1986. Keratella cochlearis and Polyarthra dolichoptera were the most abundant rotifers during most of the year (Table V-D-3). Crustacean densities were low (0 to 420/ liter) through 1986 (Table V-D-1). Most crustaceans were collected during late summer and fall (Figure V-D-2). Crustacean densities never exceeded protozoan or rotifer densi-ties and constituted from 0 to 4% of the total zooplankton density each month (Table V-D-1). Copepod nauplii were the most numerous crustaceans collected during 1986. Crustacean populations did not develop high den-sities due to unfavorable high flow / turbidity river conditions through most of 1986. Crustaceans are rarely numerous in the open waters of rivers and many are eliminated by silt and turbulent water (Hynes 1970). The highest Shannon-Weiner diversity value of 4.19 and the maximum number of species (32) occurred in September (Table V-D-4). Evenness ranged from 0.65 in July to 0.84 in June and September. Richness varied from a low of 1.88 in January to a high of 3.41 in December. The number of species ranged from 12 in January to 32 in September. Lower diversity indices during the spring reflect the dominance of Vorticella sp. Comparison of Control and Non-Control Transects Zooplankton samples were not collected from stations on the Ohio River after April 1, 1980; therefore, comparison of Control and Non-Control Transects was not possible. 55

4 TABLE V-D-4 ZOOPLANKTON DIVERSITY INDICES BY MONTH FOR ENPRAINMEfff SAMPLES,1986 BVPS Date Jan Feb Mar Apr May Jun No. of Species 12 13 15 19 21 22 Shannon-Weiner Index 2.97 2.84 3.13 3.15 3.26 3.74 Pg $o h Evenness 0.83 0.76 0.80 0.74 0.74 0.84 Richness 1.88 2.05 2.38 2.66 2.09 2.83 hp ss EO Jul Aug Sep Oct Nov Dec X NEO l No. of Species 23 26 32 17 15 21 20 "Pz Shannon-Weiner Index 2.94 3.69 4.19 ~2.90 2.83 3.10 3.23 E 3 l Evenness 0.65 0.78 0.84 0.71 0.72 0.70 0.76 E Richness 2.51 2.68 3.23 2.13 2.19 3.41 2.50 i l i h 1

. _. _..._._ _ _ _ _ _ _ _ _ _ _ ~ _ _ _ _ _. _ _ DUQUESNE LIGHT COMPANY j 1986 ANNUAL ENVIR0lttENTAL REPORT i l Comparison of Preoperational and Operational Data Population dynamics of the zooplankton community during the seasons of j preoperational and operational years are displayed in Figure V-D-1. Total zooplankton densities were lowest in winter, usually greatest in ] sunner and transitional in spring and autumn. This pattern in the Ohio River sometimes varies from year to year which is normal for zooplankton 1 populations in other river habitats. Hynes (1970) concluded that the zooplankton community of rivers is inherently unstable and subject to d constant change due to variations of temperature, spates, current, tur-I bidity and food source. Total densities of zooplankton during 1986 4 exceeded the range established during the preoperational years (1973 l through 1975) and operational years (1976 through 1985) (Figure V-D-1). l In 1986, the data indicate that the peak zooplankton densities occurred in May and September. This was due primarily to optimum river flow, precipitation and temperatures. 1 The species composition of zooplankton in the Ohio River near BVPS has remained stable during preoperational and operational years. The common or abundant protozoans during the past 13 years have been Vorticella, Codonella, Difflugia, Strobilidium, Cyclotrichium, Arcella and l Centropyxis. The most numerous and frequently occurring rotifers have been Keratella, Polyarthra, Synchaeta, Branchionus and Trichocerca. Copepod nauplii have been the only crustacean taxa found consistently. i i Community structure, as compared by diversity indices, has been similar during the past 13 years (Table V-D-5). In previous years, low diversity indices and number of species occurred in winter; high diversities and j number of species usually occurred in late spring and summer. f In 1986, the diversity indices and species numbers were relatively low in I, January and February which was typical for months of winter and early I spring. Shannon-Wiener diversity indices in 1986 ranged from 2.84 to i 4.19 and were somewhat higher than the range of 1.80 to 3.28 that occur-i . during preoperational years from 1973 to 1975. The variation in j red evenness during 1986 (0.65 to 0.84) was at the upper portion of the range l reported from 1973 to 1985 (0.21 to 0.93). 57

TABLE V-D-5 MEAN ZOOPLANKTON DIVERSITY INDICES BY MONTH FROM 1973 IWROUGH 1986 IN THE OHIO RIVER NEAR RVPS Jan Feb Mar Apr May Jun Jul h Sep Oct Nov Dec 1973 I*I Eii5er of Spegs 8.44 15.29 21.28 25.07 21.95 -22.86 16.33 14.40 14.30 Shannon Index 1.80 3.06 3.08 2.79 2.25 2.20 2.21 2.31 3.10 Evenness 0.37 0.63 0.58 0.46 0.39 0.36 0.37 0.44 0.61 1974 Number of Species 14.64 9.18 14.92 17.75 23.25 15.56 21.14 18.89 9.56 14.47 Shannon Index 3.18 2.53 2.91 3.06 3.25 2.32 3.28 2.24 2.15 1.84 Evenness 0.62 0.56 0.57 0.58 0.55 0.41 0.60 0.41 0.42 0.30 1975 Number of Species 24.75 18.75 14.38 17.44 15.38 Shant.on Index 3.20 1.86 2.90 2.01 3.20 Evenness 0.69 0.44 0.77 0.49 0.82 e 1976 Er of Species 7.00 9.13 8.69 17.56 19.19 23.56 28.06 23.50 23.56 11.19 8.75 11.75 $E Shannon Index 1.67 2.64 2.24 0.89 3.06 2.33 3.36 3.63 2.76 2.73 1.60 2.64 Evenness 0.60 0.84 0.73 0.21 0.72 0.51 0.70 0.80 0.61 0.79 0.51 0.75

> m t~ vn 1977 m$

Er of Species 4.00 10.00 12.00 13.31 21.00 25.62 22.88 25.50 36.75 16.88 20.31 15.31 $ t-a Shannon Index 1.53 2.59 3.01 2.98 3,15 3.45 3.32 3.60 3.71 3.35 3.42 3.42 M H Evenness 0.78 0.79 0.87 0.81 0.72 0.74 0.73 0.77 0.71 0.82 0.79 0.86 7 e4 1978 N Er of Species 0.12 7.12 4.31 5.12 7.62 6.25 10.25 11.25 12.50 0.25 10.88 10.38 $O Shannon Index 2.48 2.41 1.53 1.70 1.53 1.33 2.50 2.44 2.53 2.28 2.15 2.00 Evenness 0.83 0.85 0.74 0.71 0.52 0.50 0.76 0.70 0.70 0.73 0.62 0.83 t* 1979 N Nusber of Species 10.62 6.00 10.25 15.88 17.25 14.25 16.88 21.50 18.12 12.00 14.62 14.00 3 Shannon Index 2.51 2.52 3.05 3.42 2.36 3.02 2.42 3.30 3.36 2.99 2.84 3.10

=

Evenness 0.74 0.93 0.90 0.86 0.58 0.80 0.60 0.74 0.80 0.84 0.74 0.83 H 1980 Number of Species 11.62 11.00 12.50 10.00 8.00 15.00 21.00 15.00 18.00 22.00 18.00 18.00 Shannon Index 2.51 2.70 3.03 2.41 2.00 2.91 3.63 2.79 3.23 2.88 3.26 3.36 Evenness 0.70 0.78 0.84 0.72 0.66 0.74 0.82 0.71 0.77 0.64 0.78 0.80 1981 Er of Species 8.00 12.00 7.00 11.00 19.00 12.00 23.00 24.00 20.00 21.00 17.00 10.00 Shannon Index 2.14 3.02 2.28 2.32 3.44 2.73 2.% 3.55 2.62 3.05 2.66 2.47 Evenness 0.71 0.84 0.81 0.67 0.81 0.76 0.65 0.77 0.60 0.69 0.65 0.74

-.. ~ _.... _ - -. - - = - l TABLE V-D-5 i j (Continued) i Jan Feb Mar Apr May Jun Jul g Sep Oct N.7v Dec f 1982 Iumber of Species 10.00 9.00 11.00 22.00 27.00 20.00 37.00 36.00 40.00 34.00 19.00 17.00 [ j Shannon Index 2.99 2.22 2.89 3.59 2.46 3.20 3.82 4.28 3.86 3.09 3.54 3.14 j Evenness 0.90 0.70 0.83 0.80 0.52 0.74 0.73 0.83 0.72 0.61 0.83 0.77 \\ 1983 Number of Species 18.00 10.00 23.00 14.00 17.00 24.00 34.00 30.00 37.00 33.00 17.00 18.00 [ J Shannon Index 3.20 2.39 2.41 3.09 3.54 2.36 3.56 2.65 3.92 3.43 3.28 3.54 i Evenness 0.76 0.7) 0.53 0.81 0.86 0.51 0.70 0.54 0.75 0.68 0.80 0.85 i 1984 M r of Species 17.00 10.00 7.00 10.00 13.00 18.00 12.00 18.00 23.00 19.00 14.00 11.00 Shannon Index 3.29 2.64 0.82 2.10 2.26 2.63 2.40 2.28 3.62 2.84 2.89 2.52 Evenness 0.80 0.79 0.28 0.63 0.61 0.63 0.67 0.54 0.80 0.67 0.74 0.72 5 4 co 1985 l 4 E r of Species 13.00 12.00 9.00 10.00 16.00 19.00 18.00 32.00 27.00 20.00 19.00 13.00 g$ l tf Shannon Index 2.32 1.98 1,72 1.64 2.90 2.91 3.35 3.60 3.72 3.27 3.25 1.97 z Evenness 0.62 0.55 0.53 0.49 0.72 0.68 0.80 0.72 0.78 0.76 0.76 0.53 gg [ 1986 ~ in E r of Species 12.00 13.00 15.00 19.00 21.00 22.00 23.00 26.00 32.00 17.00 15.00 21.00 EM [ W Shannon Index 2.97 2.84 3.13 3.15 3.26 3.74 2.94 3.69 4.19 2.90 2.83 3.10 <: ta } Evenness 0.83 0.76 0.80 0.74 0.74 0.84 0.65 0.78 0.84 0.71 0.72 0.70 r i O lI: { j 'd j i 1 mn [

• Blanks represent periods when no collections were made.

$0 3 IDIShannon-Weiner Index b (c) Data for period April 1980-December 1%6 represents single entrainment samples collected monthly, w M i 1 y H I l i i 1 I 4 i i i I 1 r 1 1 1 i i L 1 I I I

~ j. DUQUESNE LIGRT COMPANY j 1986 ANNUAL ENVIRONMENTAL REPORT f f Suasary and Conclusions j zooplankton densities throughout 1986 were typical of the temperate zoo-j plankton community found in large river habitats. Total densities 2 exceeded the range of those repor ted in previous years. Populations i j developed high densities in May with the peak annual maximum occurring in i l September. Protozoans and rotifers were always predominant. Common and i abundant taxa in 1986 were similar to those reported during preopera-j tional and other operational years. Shannon-Weiner diversity, number of j species, and evenness were within the ranges of preceding years. Based l l on the data collected during the eleven operating years (1976 through 1986) and the three preoperational years (1973 through 1975), it is j concluded that the overall abundance and species composition of the zooplankton in the Ohio River near BVPS has remained stable and possibly improved slightly over the fourteen year period from 1973 to 1986. No l evidence of appreciable harm to the river zooplankton from BVPS Unit 1 I i operation was found. The data indicate that increased turbidity and current from high water conditions have the strongest effects of delaying the population peaks and temporarily decreasing total zooplankton densities in the Ohio River near BVPS. i 3 1 j l 4 I 1 ) 4 J i I i I 60 1 =- ,--.__,m -.-..- m ,-,~,v ..,_._-...m,. - -,. _..,

DUQUESNE LIGHT COMPANY 1986 ANNUAL ENVIRONMENTAL REPORT l E. FISH Objective Fish sampling was conducted in order to detect any changes which might occur in fish populations in the Ohio River near BVPS. Methods Adult fish surveys were performed in May, July, September and November 1986. During each survey, fish were collected at the three study trans-ects (Figure V-E-1), using gill nets, electrofishing and minnow traps. 4 i The gill nets consisted of five 25-f t. panels of 1.0, 2.0, 2.5, 3.0 and 3.5 inch square mesh. Two nets were positioned close to shore at each transect, with the small mesh inshore. As transect 2 is divided by Phillis Island into two separate water bodies consisting of the main river channel (2A) and the back channel (2B), south of the island, a total of eight gill nets were set per sampling month. Nets were set for approximately 24 hours. All captured fish were identified, counted, measured for total length (mm), and weighed (g). Electrofishing was conducted with a boat-mounted boom electroshocker. Direct current of 220 volts and one to two amps was generally used. Shocking time was maintained at 10 minutes per transect for each survey. The shoreline areas of each transect were shocked and large fish pro-cessed as described above for the gill net collections. Small fish were immediately preserved with 10% formalin and returned to the laboratory for analysis. Non-game fish were counted and a batch weight obtained for the entire sample. The length range was determined by visual inspection and measurement of the largest and smallest fish. Minnow traps were baited with bread, cheese and sucrose and placed next to the inshore side of each gill net on each sampling date. These traps were painted black and brown with a camouflage design and were set for 24 hours. All captured fish were preserved and processed in the laboratory in the manner described for electrofishing. l 61

I .. a.. o. ,.u,. s: t Q. epg, e.... x 9-m O, ph+e+h q

== 5: \\ w.%, 6 v '. _ ',g w a%.., =m um... 3-w W f[ k=C khk+; 7y g; o lI Q ,g r"k m2 o g2 o -< u-9' 4: 0% 1E90Lil // 2A $YMQQLS. h 8-3 STATIOta NUk!BER Di BEAVER VALLEY DISCHARGE [,' 7 .a D2 SillPPINGP0HI DISCilAftGE fI he s / i EL EC T RUflSillNG DS INDUSIMBAL DISCilAftGE

• j{ 2ij l

i GILL NET e AID 10 NAVIGAllON i BEAVER tJIIJt40st TRAP -- -- TH AN3 MISSION LINE fH Si iN owtg SIAilDN FIGURE V-E-1 FISH SAMPLING STATIONS BVPS

~ l DUQUESNE LIGHT COMPANY 1986 ANNUAL ENVIRONMENTAL REPORT f i Results Fish population studies have been conducted in the Ohio River near BVPS from 1970 through 1986. These surveys have collected 63 fish species and two hybrids (Table V-E-1). In 1986, 30 fish species were collected. Mooneye, which had not been collected in previous years, was collected in 1986. A combined total of 2069 individuals were collected in 1986 by 4 4 gill noting, electrofishing and minnow traps (Table V-E-2). A total of 1,832 fishes, representing 22 species were collected by elec-trofishing (Table V-E-3). Collectively, the minnows and shiners accounted for 88.3% of the total electrofishing catch in 1986. Gizzard shad, also a forage species, represented 7.6% of the catch. Carp accounted for 1.4% of the catch. Eacn of the other taxa accounted for less than it of the total. Most of the fish sampled by electrofishing were collected in September (67.9%). The fewest fish were collected in May (8.3%). It should be noted that " observed" fishes were included in the catch per unit effort. This was necessary because of the turbidity and swif tness { of the high water. Since the netters could not physically collect these j stunned fishes, they were recorded as " observed". This accounts for the i numbers of electroshocked fishes being identified to the genus level. The gill net results varied by month with the highest catch in the month of May (46 fish). September we.s the next highest month with 39 fish. July and November catches resulted in 22 fish and 11 fish, respectively. Gill ~ net sampling typically results in catching more fish in warmer weather when fish are usually more active, thus the low sample numbers encountered from November are to be expected (Table V-E-4). A total of 119 fish were captured using minnow traps in 1986 (Table V-E-l 2). July had the highest catch with 110 fish. The most conunon species (i.e., those which contributed more than 14 to the annual total catch) collected through the use of gill nets, electro-63 l l

1: s-DUQUESNE LIGHT COMPANY 1986 ANNUAL ENVIRONMENTAL REPORT TABLE V-E-1 (SCIENTIFIC AND COPMON NAME)1 FAMILIES AND SPECIES OF FISH COLLECTED IN THE NEW CUMBERLAND DOOL OF THE OHIO RIVER, 1970-1986 BVPS Family and Scientific Nas.e Conunon Name Lepisosteidae (gars) Lepisosteus osseus Longnose gar Clupeidae (herrings) Alosa chrysochloris Skipjack herring Dorosoma cepedianum Gizrard shad Riodontidae (mooneyes) Mooneye Riodon terqisus Salmonidae (salmon and trouts) Salmo gairdneri Rainbow trout Esocidae (pikes) Esox lucius Northern pike E. masquinoney Muskellunge E_. lucius X E. masquinonqy Tiger muskellunge Cryprinidae (minnows and carps) Campestoma anomalum Central stoneroller Carassius auratus Goldfish. Cyprinus carpio Common carp C. carpio X Carassius auratus Carp-goldfish hybrid Ericymba buccata Silverjaw minnow Nocomfi micropogon River chub Notemiconus crysoleucas Golden shiner Notropis atherinoides Emerald shiner 2 N_, chrysocephalus' Striped shir.er N. hudsonius Spottail shiner N_. rubellus Rosyface shiner N. spilopterus Spotfin shiner { N. stramineus Sand shiner N. volucellus Mimic shiner Pimephales notatus Bluntnose minnow Rhinichthys atratulus Blacknose dace semotilus atromaculatus Creek chub e e 4 64 t l -e.,

DUQUESNE LIGHT COMPANY 1986 ANNUAL ENVIRONMENTAL REPORT ) ) TABLE V-E-1 (Continued) Family and Scientific Name Common Name Catostomidae (suckers) Carpiodes carpio River carpsucker Carpiodes cyprinus Quillback Catostomus commersoni White sucker Hypentelium nigricans Northern hog sucker Ictiobus bubalus Smallmouth buffalo J,. niger Black buffalo Moxostoma anisurum Silver redhorse !I. carinatum River redhorse

21. duquesnei Black redhorse gl. erythrurum Golden redhorse g[. macrolepidotum Shorthead redhorse Ictaluridae (bullhead and catfishes)

Ictalurus catus White catfish J,. melas Black bullhead I, natalis Yellow bullhead J. nebulosus Brown bullhead ],. punctatus Channel catfish Noturus flavus S tonecat Pylodictis olivaris Flathead catfish Percopsidae (trout-perches) Perciosis omiscomayeus Trout-perch Cyprinodontidae (killifishes) Fundulus diaphanus Banded killifish Atherinidae (silversides) Labidesthes sicculus Brook silverside Percichthyidae (temperate basses) Morone chrysops White bass Centrarchidae (sunfishes) Ambloplites rupestris Rock bass i Lepomis cyane11us Green sunfish L. gibbosus Pumpkinseed L. macrochirus Bluegill Micropterus dolomieui Smallmouth bass i !I. punctulatus Spotted bass

21. salmoides Largemouth bass Pomoxis annularis White crappie P,. nigromaculatus Black crappie 65 i

-c . -,, ~,.. -....,.,,,

DUQUESNE LIGHT COMPANY 1986 ANNUAL ENVIRONMENTAL REPORT TABLE V-E-1 (Continued) Family and Scientific Name Common Name Percidae (perches) Etheostoma blennioides Greenside darter E. nigrum Johnny darter E. zonale Banded darter Perca flavescens Yellow perch Percina caprodes Logperch P. copelandi Channel darter i Stizostedion canadense Sauger S. vitreum vitreum Walleye Sciaenidae (drums) Aplodinotus grunniens Freshwater drum INomenclature follows Robins, et al. (1980). 2A former subspecies of N,. cornutus (Gilbert, 1964) and previously reported as common shiner. 4 i 66 <nw, ,,m <e.a e ~ -m-e-.e--- w

TABLE V-E-2 NtMBER OF FISH COLLECTED AT VARIOUS TRANSECTS BY GILL NET (G), ELECTROFISHING (E) AND MINNOW TRAP (M) IN THE NEW CUMBERLAND POOL OF 1HE OHIO RICR, 1986 BVPS Percent 1 2A 2B 3 Grand Total Annual Annual Taxa G 1 M_ G E M, G E M G_ E M, G E M, Total Total Longnose Gar 1 1 1 < 0.1 Gizzard shad 24 4 31 3 29 11 55 18 139 157 7.6 Mooneye 1 1 1 <0.1 g Muskellunge 1 1 3 5 5 0.2 co Pike sp. I 1 1 < 0.1 Comenon carp 3 6 3 3 13 5 9 11 28 25 53 2.6 E Colden shiner 1 1 1 < 0.1 e@ Emerald shiner 31 4 51 46 9 7 13 43 104 100 204 9.9 %y Spottall shiner 1 1 1 < 0.1 2: Spotfin shiner 3 2 1 1 5 4 8 12 0.6 EM Sand shiner 3 1 1 5 4 6 10 0.5 $[ N Mimic shiner 13 3 3 16 3 19 0.9 @Q Bluntnose minnow 3 1 1 1 4 2 6 0.3 3H Shiner sp. 352 279 219 635 1,485 1,485 71.8 }n River carpsucker 1 3 4 4 0.2 g White sucker 2 1 1 2 3 0.1 r* p Golden redhorse 1 1 1 2 2 1 4 4 8 0.4 ,d Redhorse sp. 1 1 1 1 2 0.1 g Channel catfish 5 5 2 12 1 9 31 3 34 1.6 o Flathead catfish 2 2 2 0.1 White bass 1 1 1 < 0.1 Rock bass 1 1 1 2 1 3 0.1 Green sunfish 1 1 1 < 0.1 i Bluegill 1 1 2 2 0.1 Smallmouth bass 1 4 3 1 1 8 9 0.4 Spotted bass 3 2 2 1 3 2 6 7 13 0.6 Largemouth bass 2 1 3 3 0.1 i White crappie 1 1 2 2 0.1 Bass sp. 2 2 3 7 7 0.3 Yellow perch 1 1 1 < 0.1 Ingperch 1 2 3 3 0.1 Sauger 2 1 1 1 1 5 9 2 11 0.5 Walleye 1 1 1 < 0.1 Freshwater drum 2 1 1 2 3 0.1 Total 16 447 5 15 386 48 35 281 9 52 718 57 118 1,832 119 2,069

TABLE V-E-3 NIMBER OF FISH COLLECTED PER MON 1H BY GILL NET (G), ELECTROFISHING (E), AND MINNOW TRAP (M) IN THE NEW CUMBERLAND POOL OF THE OHIO RIVER, 1986 BVPS Percent May Jul Sep Nov Grand Total Annual Annual Taxa G_ E M_ G E M G E_ M, G E M G E M, Total Total Longnose gar 1 1 1 <0.1 Gizzard shad 2 17 72 12 5 4 45 18 139 157 7.6 Mooneye 1 1 1 < 0.1 Muskellunge 3 2 5 5 0.2 5 Pike sp. I 1 1 <0.1 g Common carp 17 12 6 2 4 1 1 10 28 25 53 2.6 h$ Golden shiner 1 1 1 < 0.1 Emerald shiner 21 4 70 93 11 1 2 2 104 100 204 9.9 cO Spotta11 shiner 1 1 1 <0.1 Spotfin shiner 3 1 8 4 8 12 0.6 gy Sand her 4 1 5 4 6 10 0.5 g Mimi. wer 11 5 3 16 3 19 0.9 HH m C Blun. ~ tinnow 4 1 1 4 2 6 0.3 Shirt 56 105 1,212 112 1,485 1,485 71.8 yH 4 Rive. psucker 4 4 4 0.2 QQ White sucker 1 1 1 1 2 3 0.1 gg Golden redhorse 1 3 1 1 2 4 4 8 0.4 t-* p-Redhorse sp 1 1 1 1 2 0.1

o d Channel catfish 15 3

5 11 31 3 34 1.6 Q Flathead catfish 1 1 2 2 0.1 Q White bass 1 1 1 <0.1 H Rock bass 2 1 2 1 3 0.1 Green sunfish 1 1 1 <0.1 Bluegill 1 1 2 2 0.1 Smallmouth bass 1 3 1 4 1 8 9 0.4 Spotted bass 2 5 1 1 2 1 1 6 7 13 0.6 Largemouth bass 3 3 3 0.1 White crapple 2 2 2 0.1 Bass sp. 3 4 7 7 0.3 Yellow perch 1 1 1 <0.1 Iogperch 1 1 1 3 3 0.1 Sauger 2 1 4 1 1 2 9 2 11 0.5 Walleye 1 1 1 < 0.1 Freshwater drum 2 1 1 2 3 0.1 Total 46 152 5 22 262 110 39 1,244 2 11 174 2 118 1,832 119 2,069

DUQUESNE LIGHT COMPANY 1986 ANNUAL ENVIRONMENTAL REPORT TABLE V-E-4 NIE4BER OF FISH COLLECTED BY GILL NET, ELECTROFISHING AND MINNOW TRAP AT TRANSECTS IN THE NEW CUMBERIAND POOL OF THE OHIO RIVER, 1986 BVPS Transect Gill Net 1 2A 2B 3 Total Average May 8 4 23 11 46 11.5 July 0 1 2 19 22 5.5 September 8 7 10 14 39 9.8 i November 0 3 0 8 11 2.6 Total 16 15 35 52 118 Average 4.0 3.8 8.8 13.0 Electrofishing May 58 56 22 16 152 38.0 July 64 113 18 67 262 65.5 September 318 211 109 606 1,244 311.0 November 7 6 132 29 174 43.5 Total 447 286 281 718 1,832 Average 111.8 96.5 70.3 179.5 Minnow Trap 1 May 2 3 0 0 5 1.3 July 3 45 6 56 110 27.5 September 0 0 2 0 2 0.5 November 0 0 1 1 2 0.5 Total 5 48 9 57 119 i Average 1.3 12.0 2.3 14.3 l l 69 1

DUQUESNE LIGHT COMPANY 1986 ANNUAL ENVIRONMENTAL REPORT fishing and minnow traps included the following: gizzard shad; common carp; emerald shiner; channel catfish and shiners spp. The remaining 20 species each accounted for 14 or less of the total. Comparison of Control and Non-Control Transects Comparisons of the data obtained from the Control Transect (1) with that from the Non-Control Transects indicate that the fish populations have fluctuated slightly since 1974 (Table V-E-5). However, comparisons between years include many natural variables and can be misleading. Fluctuations in catches occur with changes in the physical and chemical properties of the river's ambient water quality. Since electrofishing efficiency depends largely on the water's conductivity, any sampling conducted during extremes in this parameter will affect catch-per-unit-effort. In addition, turbidity and current affects the collectors' ability to observe the stunned fish. Direct sunlight also influences where fishes congregate, thus determining their susceptibility to being shocked. Electrofishing collects mostly small forage species (minnows and shad) and their highly fluctuating annual populations were reflected in differences in catch-per-unit-effort from year to year and station to station. However, gill nets catch mostly game species and are more indicative of true changes in fish abundance. When comparing gill net data (Table V-E-6), little change is noticed either between Control and Non-Control Transects or between pre-operational. and operational years. The 1986 gill net catch-per-unit-effort (fish /24 hours) averaged near the j upper end of the range established by previous collections with 2.0 and 3.8-4.8 for the Control and Non-Control Transects respectively. Con-l tributing to these increased yields are notibly high catches of Gizzard shad, carp, channel catfish, spotted bass and sauger. Comparison of Preoperational and Operational Data Electrofishing and gill net data, expressed as catch-per-unit-effort, for the years 1974 through 1986 are presented in Tables V-E-5 and V-E-6. These thirteen years represent two preoperational years (1974 and 1975) and eleven operational years (1976 through 1986). Fish data for Transect 1 (Control Transect) and the averages of Transects 2A, 2B and 3 (Non-70

DUQUESNE LIGHT COMPANY 1986 ANNUAL ENVIRONMENTAL REPORT o o e mee ao e cooom en o e j ef.e.eesejeee444eeegAeeeee. ..oeeeee e.edeadsideeeJJed, .f e o* e o e oc o e oc o e B enee..ed. 4.eeeedeeeAdeededee... eee eeee.AdededeeeJ e e J ~ .-e ee e. ..eae,ee.. eeee.-....-e ee. e eea. .c. M se M e M 'e co a om eo o e e e em me e e 3 44....ef.sae24.de edeJ.Jee..eeeee. . JJeJJo eJ.e..... 4 ee e e 3 8 oc. eco. o o o j .deeee,daeje.444d.....eed.ed.. 4eee. ee.4edede... e. e ee e a f. [ 9 3 2 y o ..e nao e. e oe ~ g j .A...e efdy.. Add. eeeoe..ad.,de ee,JeAde. .ede f e e. e ~ = h c. e e ~,.. e di e.. di. e *,e eJJJ e s eee. ede.. eedeee eJJdeJ eeee .. J e e ee e C3 -e N" 2 ? "f. s. c a ece c. cee ee.de ...Jeeejag..e e.eed eee ee e ..e a ddi e o*J e e eaddieea e e = 4 e. e 3g i k -E 3- .......J 4..ddd4....dde.de eede . e'. eddded.Jo edde.e J. e. .e . ~ 5 i \\ 5 o e o a. o o-o y G .de .Jeje e djn*f d e e.J. e ee e e e e ee.....ee.AJJee e e. f .. ee...e -\\l ~ 5 1 t .me-e e - e U. t .Je .d..d eJudad,ee.e eeJ.J. eedee i e e eee ....es e.... e e d e ~ 't. a. a. 4 .~... e e .-ee eg.g.... ......ee. ...ee. e e. .......... e e ee e 3 . o .e...Jef.edf.id.,.ed.e e J e d d.: e .e ,e e ee.ee., ,e . e.eee o e. U g ge I !.::: 2,s i! -s. ...s-s: l t ,:. st:c 5:

==

.e

_, s g s. ty {-{.,2 ..:g .3 ,:,:s"e., I. t s i.n. g z. ~ -3 1 it * .,$3r e"v er .iz: er:,2<:g =s :s eS 2 "..e..t *, .t : g 4t .s : : !.e . : I s s s - s :,....assassa

c..-

, s t. .2 e-a an as3,a s&A.g.._ tgr emi.a_ s I: ,=e . s.. e- :_::i.sm-est. :: a .x-

tec

-J Af Araaa3a. gg..ars3 s.__. sas.,es: sets 1.<#., 71

DUQUESNE LIGHT COMPANY 1986 ANNUAL ENVIRONMENTAL REPORT 9

• 9***

9 9 .o.o 9***9.. 9* eg.. 9.e#9*ogeonomo... ..o..~.. ~.....a o .none mo... j .o...-. .o........ .e. ..o. c 3 .a. e a

• p. ei.d.:.i.e..:..d...g..da.....u.4....aaadu. eda.u...: i.

e a n e e e o ao es e ooomoc oco em o e e

• a e

oem ooon e ce e o o e cee o e i .i.....dide.didd....d....Jd. d.J.A.. ...d.dAA....ed.... J g = a y .......<o~-..-~aa.......o.-~..~.a....

• "9 t

.ooe. moo.....o.... ~o ~ ~ 1 e e e. o e e e. e. e e. c c. e. en m e. n e .n.. e e e. o j ef..d..def..dfdd ....d d.ad.da.....d diddedad.....dd... f e. a a e e e e. oman e. e e n e e. e c e. ~~e a a f .A.i. 4def..afag.... 4...d...d.d..d. .i... Add.i..ddd d. f I E ':'] C e ~n e~ne en na e e e ~ e-e esen .4.... 4 4..d;44.dd.dd.......d.d.... .d.d. dad..ddid.... 4 e = ..i 8 i.i S e . e

can,

-a ma, e. a.. ne, a e. e .d.,d. d.A..dA.da.....dd.dd.diddedd.dd . dda. d d. d. dd..... a e ~ e en e ane a a<an o e. e. G .~.....~.f..dfAj....didad....A...... d a daad.*dd.....d.... f. 4 .ea e. . c. e, a

• 'gl.J.....d.A..dAAJ...........

4dd ....d ..dd.d.d..di...... J e ~ t a ...':....o.............. ....t...... 9....., ': r e a e c m ". ** n .o.....a.... .....oo....... .oo ..o-...... O. P gu o 2 E I e 2 221.1 3g -g a I $.6 B 3.- .r,

i::

32.-.Es o.,

*4

• • :s e.

2.

2:..==..

3 am.

m. as.

a ma.. a..

m. a.

g 2. 2 .'8

• 5 s..:.2 :

e=.=t:. s s. s. e . 2.I."

• 2 2 e.1*

2 5 : =.s i e', _ i : : g

s

..a... 3a:n:; ira:aa3a:ccar:es ggi23: :3::3, z..z: ::: : -.. =e,=: Ay#."E .g. casassassa emea. s 32:a: seig.:::q 5 ss.,:.s:su 2 72 ~ _-..,.. ~.. _ _ - -. - _ =

DUQUESNE LIGHT COMPANY 1986 ANNUAL ENVIRONMENTAL REPORT =g m e I l l l l l t id Odl l l ldl l l l l idildl l l l idil l id8N 5 E. 5 N loi l l iolo I l l i l lol l l t i folei l l l l l= 8 6 t il l N ,IG = m m l idl e t id t i l l i t idil l l l l l i t idil l l l l l t idd = m m m N m@m WmNN INl l l i d$d ldil l l l l l l ldidl l i l l l l d bilddd4 e 4 -c emne i dil l l l l l O ldildl l l i l l idl l l l l l ldbl l idddN ~ E g ~ 5 t i l f l l l l d l idil l l l i t i l ldl l i l l l l l l l l ade ld O $l wF n I 4 0 8 0 0 0 1 I l l l l l l l l l l l idl l l l l l l l l l i t i dl N g I i ,I 4@g 'el l = a 7 7 ~ N 997 NN i i l i s i y g te s i. i leil l i e l lol lol l 'Oe?oo' 'T F, O o e 9 =@ N =N

== = = men e 7 i l l l l ldld i l ldl l i l l idl ldl iddl ldl ldidddlN m A R E g )l i a ~~ ~ ~ _.m ~ l ldidld l iddl l l l i l l l idl ldil l l ididddl l N d %~ ~~ nn ~ e ol l i l l l io 1 1. 4 9 1 0 5 4 1 0 0 0 0 0 0 0. 0 0 0. o.6 0oo4 5~ o n m m n B 0 0 0 $ 0 0 0 l l idil l l i l l l' O d l ldil l l l dildil lN nu C II gll .~ i l i l l l l d l i l l l l l l l id,l i l l l l l l l l l l iddl la Ja ~ Ji.i Iai ] !! 3 JJ am.3 1 nn 'f s 1stitia!1la!213'Jjl]illjilill x.v] i U Ei i ijl j;h)I is lillis3: i!allilit isaiil 7?

DUQUESNE LIGHT COMPANY 1986 ANNUAL ENVIRONMENTAL REPORT ~ ddl ldf l Idl l ldidl l l i d dl l i Odildd O dd1 1 9 did i d8 8ddi l 1 B ld Id1 I i 1dbI $d 8j -~ - .- ~ - -~ -~ - ---. = l l l i I l ld S l id$dddl l l t iddIdl ibil Ob b I !" e p N. ..N---@ NN dd8 iddd8d i 3ddI I Idd0 $ 0b bI I I -~ , ddild l id I l l lNddl l l l lbbidl l l l I I 4 l idil ld l il l l l f i l i l l ldl l idil l ldil Ndd --N N-N l l l l Ob d l id l l l i l l l l ldil l l l i l lddl ld I i - ^ U S 1"U" "19"1C g 30 1 9 0 8 0 00 0 0C$O$l $ 3 0 0 0 0 C 1 60 0 6 0 1 5000C00 0j w 9 --~ I l l lb did l ldidil l l l l l idl l 1 9 5 0 bildddl s n -. - ~--

---

----~~-

~g $d8 Od1 Odd dOdfg1 igf lal indddOgdfaddgOf 0 l l -~ --~---- ~ l il l l t idd l idil l l l l ldiddl l l l t idddddddl l i i l gl O d l ~~- - z l l l l ld dl l l l l l l idil lal ldil l idil ldddle sw sni .,l ~ ~ ~ ~ z Odl l l l l ld l i ldl l l i t iddldl l l l l l lbil l

t. d l la 44 Jii Id.is!

4}a1a.1ss.i,. 8 a 1 s. 11.,.., 1 en i =e j efi aa f: ja! s3 jijl 3 e IIll#!a!g13silflifflilai1111l,ll!I),j i)), i 74

~.. _ - DUQUESNE LIGHT COMPANY 1986 ANNUAL ENVIRONMENTAL REPORT l Control Transects) are tabulated separately. These data indicate that new species are continuing to inhabit the study area and that, in gen-eral, the water quality of the Ohio River has steadily improved. Sunusary and Conclusions The fish community of the Ohio River in the vicinity of BVPS has been sampled from 1970 to present, using several types of gears electrofish-ing, gill netting, and periodically minnow traps and seines. The results of these fish surveys show normal conununity structure based on species composition and relative abundance. In all the surveys since 1970, forage species (minnows and shiners) were collected in the highest numbers. This indicates a normal fish community, since sport species and predators rely heavily on this forage base for their su'rvival. Varia-tions in total annual catch are attributable primarily to fluctuations in the population size of the small species. Small species with high repro-ductive potentials frequently respond to changes in natural environmental factors (competition, food availability, cover, and water quality) with large changes in population size. These fluctuations are naturally 1 occurring and take place in the vicinity of BVPS. 4 i f Although variation in total catches has occurred, species composition has i remained fairly stable. Since the initiation of studies in 1970, forage fish of the family Cyprinidae have dominated the catches. Emerald shiners, gizzard shad, sand shiners and bluntnose minnows have consis-i tently been among the most numerous fish, although the latter two species may have declined in recent years. Carp, channel catfish, smallmouth and spotted bass, yellow perch, and walleye have all remained common species. Since 1978, sauger has become a conunon sport species to this area. Dif ferences in the 1986 electrofishing and gill net catches, between the { Control and Non-Control Transects were similar to previous years (both j operational and pre-operational) and were probably caused by habitat preferences of individual species. This habitat preference is probably the most influential factor that affects where the different species of I i fish are collected and in what relative abundance. 75 I

DUQUESNE LIGHT COMPANY e 1986 ANNUAL ENVIRONMENTAL REPORT Data collected from 1970 through 1986 indicate that fish in the vicinity of the power plant have not been adversely affected by BVPS operation. 4 I 76

---

,-y- - -. -m--7

,-_--.m--.-_-,m -,-n,r--. ..--,+,-y--,- y .e

1 l i DUQUESNE LIGHT COMPANY 1986 ANNUAL ENVIRONMENTAL REPORT F. ICHTRYOPLANKTON Objective Ichthyoplankton sampling was performed in order to monitor the extent fishes utilize the back channel of Phillis Island as spawning and nursery grounds. This is important because of the area's potential as a spawning ground and relative proximity to the BVPS discharge structure. Methods The 1986 program was expanded to include two night samplings in May and July and a day sample in August. Five monthly day surveys (18 April, 13 May, 19 June, 15 July and 12 August) and two monthly night surveys (14 May, and 16 July) were conducted during the spring and summer, which is the primary spawning season for most resident fish species. One surface and one bottom collection were taken at Transect 2B (back channel of Phillis Island) during each survey (Figure V-F-1). Tows were made in a zig-zag fashion across the channel utilizing a conical 505 micron mesh plankton net with a 0.5 m mouth diameter. A General Oceanics Model 2030 digital flowmeter, mounted centrically in the net mouth, was used to determine the volume of water filtered. Samples were preserved in the field using 5% buffered formalin containing rose bengal dye. In the laboratory, ichthyoplankton was sorted from the sample and enu-metated. Each specimen was identified as to its stage of development (egg, yolk-sac larvae, early larvae, juvenile, or adult) and to the low-3 est possible taxon. Densities of ichthyoplankton (numbers /100 m ) were calculated for each sample using flowmeter data. l Results A total of 103 eggs, 214 larvae, 4 juveniles, and 4 adults were collected 3 in 1986 from 2,239.7 m of water sampled (Table V-F-1). Ten taxa repre-senting five families were identified. Shiners (Notropis atherinoides and Notropis spp.) accounted for 32.04 (100 larvae and 4 adults) of the 77

iso. isoa O' soue s.. ,f"3,.. u. una eur klf=f, fh_w[h. s it, r.. s...u.c,,i. cw ...'Y y es yo, S. kg;g&[\\. ag g %y%3%lfi)t / ' A.[ 3 ["Q. e $o N '"a m5 2 e " %,!al.m dA t-

E z i

i e N zcgdig[ QF,p 'n1 g m gr-Y M $E ~.. .a..,,. 4 f. ~ ~ ~ s.. s.. \\. ',' x 45 y m 2 46A3 g. uT* 2A 8 as / m h\\ t[GEND jj 11MQQL1 Di BE AVLH VALLEY DISCHANGE d h & SURFACE TOWS es D2 SillPPINGPOH1 DISCIIARGE y__e..g y 1 A BOTTOfA TOWS e. D3 INDUS Tit AL DISCalANGE 4628 l O A1D 10 NAVIGATION i BEAVEP

---

1HANSMISSION LINE

$HIPPINGPOHI VALLEY [" * """ POWEH STATION POWEH STAllON FIGURE V-F-1 ICllTIIYOPLANK'IDN SAMPLING STATIONS BVPS

i TABLE V-F-1 NIMBER AND DENSjTY OF FISH EGGS, IARVAE, JUVENILES, AND ADULTS (Number /100 m ) COLLECTED WITH A 0.5 m PLANKTON NET IN THE OHIO RIVER BACK CHANNEL OF PHILLIS ISLAND (STATION 2B) NEAR BVPS, 1986 Depth of Collection Date Surface Bottom Total Collection and April 18 Day Night Day Night Taxa Density 3 vol. water filtered (m ) 173.4 145.3 318.7 No. eggs collected 0 0 0 i No. larvae collected 0 2 2 e No. juveniles collected 0 0 0 No. adults collected 0 0 0 gg Density (number collected) g.g Eggs 0 0 0 gg Larvae z Stizostedion sp. (EL) 0 1.38 (2) 0.63 (2) hp Total Density (number collected) 0 1.38 (2) 0.63 (2) gg y e og May 13/14 Eo 3 h$ Vol. water filtered (m ) 98.4 163.0 95.5 98.4 455.3 ,h No. eggs collected 3 2 0 3 5 No. larvae collected 2 8 4 5 19 m No. juveniles collected 0 0 0 0 0 o No. adults collected 0 0 0 3 3 Density (number collected) Eggs Unidentified Egg 3.05 (3) 1.23 (2) 0 0 1.10 (5) Larvae Dorsona cepedianum (YL) 2.03 (2) 4.29 (7) 2.09 (2) 0 2.42 (11) Cyprinus carpio (YL) 0 0.61 (1) 0 3.05 (3) 0.88 (4) Stizostedion spp. (EL) 0 0 1.05 (1) 0 0.22 (1) Etheostoma spp. (YL) 0 0 1.05 (1) 1.02 (1) 0.44 (2) Etheostoma spp. (EL) 0 0 0 1.02 (1) 0.22 (1) Adult Notropis athrenoides 0 0 0 3.05 (3) 0.66 (3) Total Density (number collected) 5.08 (5) 6.13 (10) 4.19 (4) 8.13 (8) 5.93 (27)

TABLE V-F-1 (Continued) Depth of Collection Date Surface Bottom Total Collection and June 19 Day Night Day Night Taxa Density 3 vol. water filtered (m ) 136.4 135.9 272.3 No, eggs collected 2 8 10 No. larvae collected 61 23 84 h No. juveniles collected 0 0 0 No adults collected 0 0 0 (b Density (number collected) >g b Eggs cg Unidentified eggs 1.47 (2) 5.89 (8) 3.67 (10) pg Larvae ,y Dorsona cepedianum (EL) 40.32 (55) 11.04 (15) 25.71 (70) g, Cyprinidae (YL) 0 2.21 (3) 1.10 (3) gg ,o Cyprinus carpio (YL) 0 1.47 (2) 0.73 (2) oy Cyprinus carpio (EL) 0.73 (1) 1.47 (2) 1.10 (3) 5 Notropus atherinoides (EL) 2.20 (3) 0 1.10 (3) Eno f 4' Pimephales spp. (YL) 0 0.74 (1) 0.37 (1) Aplodinotus grunniens (YL) 1.47 (2) 0 0.73 (2) ,g Total Density (number collected) 46.19 (63) 22.81 (31) 34.52 (94) g O July 15/16 H 3 vol. water filtered (m ) 137.9 140.2 109.8 128.3 516.2 No. eggs collected 0 34 0 54 88 No. larvae collected 27 9 3 3 42 No. juveniles collected 0 2 0 2 4 No. adults collected 0 1 0 0 1 Density (number collected) Eggs Aplodinotus grunniens (EE) 0 17.83 (25) 0 29.62 (38) 12.20 (63) Egg Unidentified (EE) 0 6.42 (9) 0

12. 47 (16) 4.84 (25)

Larvae Dorsona cepedianum (EL) 0.73 (1) 0 0 0 0.19 (1) Dorsona cepedianum (LL) 0.73 (1) 0 0 0 0.19 (1) Notropis atherinoides (EL) 11.60 (16) 4.99 (7) 0.91 (1) 0 4.65 (24)

i TA!LE V-F-1 1 (Continued) Depth of Collection i Date Surface Botton Total Collection and j July 15/16 Day Night Day Night Taxa Density Notropis spp. (EL) 5.08 (7) 0 0.91 (1) 1.56 (2) 1.94 (10) 4 Ictalurus punctatus (LL) 0 0.71 (1) 0 0 0.19 (1) Etheostoma spp. (EL) 0 0 0 0.78 (1) 0.19 (1) Perca flavescens (LL) 0 0 0.91 (1) 0 0.19 (1) l. Aplodinotus grunniens (YL) 0 0.71 (1) 0 0 0.19 (1) Unidentifiable (*L) 1.45 (2) 0 0 0 0.39 (2) Juveniles i Dorosoma cepedianum (JJ) 0 1.43 (2) 0 0.78 (1) 0.58 (3) G Ictalurus natalis (JJ) 0 0 0 0.78 (1) 0.19 (1) R l Adults g"E a Notropis atherinoides 0 0.71 (1) 0 0 0.19 (1) Total Density (number collected)

19. 58 (27) 32.81 (46) 2.73 (3) 45.99 (59) 26.15 (135) g @E l

l August 12 M i 3 em 3 vol. water filtered (m ) 145.4 531.8 677.2 j No. eggs collected 0 0 0 $H No. larvae collected 57 10 67 No. juveniles collected 0 0 0 i@ No. adults collected 0 0 0 Densities (number-collected) Eggs 0 0 0 Larvasi Notropis atherinoides (EL) 23.38 (34) 0.94 (5) 5.76 (39) ] Notropis spp. (YL) 0.69 (1) 0 0.15 (1) Notropis spp. (EL) 15.13 (22) 0.19 (1) 3.40 (23) Aplodinotus grunniens (YL) 0

0. 38 (2) 0.30. (2)

) Aplodinotus grunniens (EL) 0 0.38 (2) 0.30 (2) Total Density.(number collected) 39.20 (57) 1.88 (10) 9.89 (67) i i Yearly Totals vol. water filtered (m) 691.5 303.2 1,018.3 226.7 2,239.7 4 j No. eggs collected 5 36 8 54 103 7 No. larvae collected 147 17 42 8 214 f k

__.m_ TAELE V-F-1 (Continued) I Depth of Collection I Date Surface Bottom Total Collection and I Yearly Totals Day Night Day Night Taxa Density l No. juveniles collected 0 2 0 2 4 L No. adults collected 0 1 0 3 4 Dansities (number collected) Eggs Aplodinotus grunniens (EE) 0 8.25 (25) 0 16.76 (38) 2.81 (63) Unidentified egg (EE) 0.72 (5) 3.63 (11) 0.79 (8) 7.06 (16) 1.79 (40) Larvae i Dorosoma cepedianum (YL) 0.29 (2) 2.31 (7) 0.20 (2) 0 0.49 (11) G ! ~ Dorosoma cepedianum (EL) 8.10 (56) 0 1.47 (15) 0 3.17 (71) I 3 Dorosoma cepedianum (LL) 0.14 (1) 0 0 0 0.04 (1) g j Cyprinidae (YL) 0 0 0.29 (3) 0 0.13 (3) "g Cyprinus carpio (YL) 0 0.33 (1) 0.20 (2) 1.32 (3) 0.27 (6) >m Cyprinus carpio (EL) 0.14 (1) 0 0.20 (2) 0 0.13 (3) j Notropis atherinoides (EL) 7.66 (53) 2.31 (7) 0.59 (6) 0 2.95 (66) h Notropis spp. (YL) 0.14 (1) 0 0 0 0.04 (1) HH O Notropis spp. (EL) 4.19 (29) 0 0.20 (2) 0.88 (2) 1.47 (33) 'E O i Pimephales spp. (YL) 0 0 0.10 (1) 0 0.04 (1) 5 I Ictalurus punctatus (LL) 0 0.33 (1) 0 0 0.04 (1) EO Etheostoma spp. (YL) 0 0 0.10 (1) 0.44 (1)

0. 09 (2)

N@ i Etheostoma spp. (EL) 0 0 0 0.88 (2) 0.09 (2) h Perca flavescens (LL) 0 0 0.10 (1) 0 0.04 (1) m j Stizostedon sp. (EL) 0 0 0.29 (3) 0 0.13 (3) o j 'Aplodinotus grunniens (YL) 0.29 (2) 0.33 (1) 0.20 (2) 0 0.22 (5) N .Aplodinotus grunniens (EL) 0-0 0.20 (2) 0 0.09 (2) Unidentifiable (*L) 0.29 (2) 0 0 0

0. 09 (2)

Juveniles Dorosoma cepedianum (JJ) 0 0.66 (2) 0 0.44 (1) 0.13 (3) Ictalurus natalis (JJ) 0 0 0 0.44 (1) 0.04 (1) Adults Notropis atherinoides 0 0.33 (1) 0 1.32 (3) 0.18 (4) Total Density (number collected) 21.98 (152) 18.47 (56) 4.91 (50) 29.55 (67) 14.51 (325) 1 ] aDevelopmental Stages j YL - Hatched specimens with yolk and/or oil globules present. EL - Specimens with no yolk and/or oil globules and with no development of fin rays and/or spiny elements. I LL - Specimens with developed fin rays and/or spring elements and evidence of a fin fold. j

• L - Specimens with undefinable larval stage due to deterioration.

JJ - Specimens with complete fin and pigment development, i.e., immature adult.

DUQUESNE LIGHT COMPANY 1986 ANNUAL ENVIRONMENTAL REPORT total catch. Gizzard shad (Dorosoma cepedianum) accounted for 26.1% (09 larvae and 3 juveniles). Freshwater drum eggs (Aplodinotus grunniens) represented 61.2% of the eggs collected in 1986. All adult fish (emerald shiners) were collected at night from the surface and bottom. For 1986, the night collections produced a total density of 23.21 individuals per 100 m3 compared to those from day collections which were 11.81 individuals per 100 m3 This indicates that ichthyoplankton were more active at night. Of the day collectir>ns densities, 19 June were most abundant at a total density of 34.52 individuals per 100 m3 (mostly gizzard shad larvae). The most abundant densities for the night collections were on 16 July that had a total density of 39.11 individuals per 100 m3 (freshwater drum eggs and emerald shiner larvae). Ichthyoplankton densities were lowest in April for the day collections, (Table V-F-1). Comparison of Preoperational and Operational Data Species abundance and composition were similar to that found in previous i years. Gizzard shad and minnows dominated the catch and other taxa were represented by only a few individuals. Densities of ichthyoplankton collected in the backchannel (Station 2B) from 1973-1974, 1976-1986, are presented in Table V-F-2. Sumary and Conclusions Shiners, gizzard shad, and freshwater drum dominated the 1986 ichthyo-plankton catch from the back channel of Phillis Island. Peak densities occurred in June and consisted mostly of early larval stages. Little spawning was noted in April and May. There was a decrease in larvae density after July. No substantial differences were observed in species i l composition or spawning activity of most species over previous years. i l 83 -,7.-y y-- yc_ _-y,-

.. = . _ ~ DUQUESNE LIGHT COMPANY 1986 ANNUAL ENVIRONMENTAL REPORT l TABLE V-F-2 DENSITY OF ICHTHYOPLANKTON (Number /100 m ) COLLECTED IN THE OHIO RIVER BACK CHANNEL OF PHILLIS ISLAND (STATION 2B) i NEAR BVPS, 1973-1974, 1976-1986 I i Date Density Date Density Date Density i; 1973 1974 1976 l 12 Apr 0 16 Apr 0 26 Apr 0.70 ) 17 May 0 24 May 0 19 May 0 j 20 Jun 16.10 13 Jun 6.98 18 Jun 5.99 26 Jul 3.25 26 Jun 9.25 2 Jul 6.63 } 16 Jul 59.59 15 Jul 3.69 1 Aug 6.85 29 Jul 4.05 1977 1978 ~ 1979 14 Apr 0 22 Apr 0 19 Apr 0 ) 11 May 0.90 5 May 0 1 May 0 9 Jun 24.22 20 May 0.98 17 May 0.81 2 22 Jun 3.44 2 Jun 4.01 7 Jun 0.39 i 7 Jul 3.31 16 Jun 12.15 20 Jun 11.69 l 20 Jul 28.37 2 Jul 13.32 5 Jul 14.82 i 1980 1981 1982 23 Apr 0.42 20 Apr 1.10 19 Apr 0 21 May 0.53 12 May 0 18 May 3.77 l 19 Jun 9.68 17 Jun 26.40 21 Jun 7.54 j 22 Jul 107.04 22 Jul 17.14 20 Jul 31.66 i 1983 1984 1985 j 13 Apr 0 16 Apr 0 18 Apr 0 11 May 0.66 10 May 0 14 May 1.81 14 Jun 4.46 8 Jun 15.46 10 Jun 13.36 12 Jul 44.05 12 Jul 44.23 11 Jul 117.59 1986 1 18 Apr 0.63 ) 13 May" 5.93 i 19 Jun 34.52 15 Jul" 26.15 ~ 12 Aug 9.89

• Day and night survey was conducted.

1 1 i 84 i

4 DUQUESNE LIGHT COMPANY 1986 ANNUAL ENVIRONMENTAL REPORT 1 i G. FISH IMPINGEMENT l 1 Obiective Impingement surveys were conducted to monitor the quantity of fish and f other aquatic organisms impinged on the traveling screens. f 1 Methods i j The surveys were conducted weekly throughout 1986 for a total of 49 weeks (Table V-A-1). Except when technical difficulties delayed the start of { collections, weekly fish impingement sampling began on Thursday mornings j when all operating screens were washed. A collection basket of 0.25 inch l mesh netting was placed at the end of the screen washwater sluiceway I (Figure V-G-1). On Friday mornings, af ter approximately 24 hours, each screen was washed individually for 15 minutes (one complete revolution of ) the screen) and all aquatic organisms collected. Fish were identified, l counted, measured for total length (mm), and weighed (g).. Data were 4 summarized according to operating intake bays (bays that had pumps oper-ating in the 24 hour sampling period) and non-operating intake bays. 4 i Results The BVPS impingement surveys of 1976 through 1986 have resulted in the l collection of 36 species of fish representing nine families (Table V-G-1). i A total of 213 fish, representing 16 species were collected in 1986 (Table V-G-2). Gizzard shad were the most numerous fish, comprising j 54.0% of the total annual catch, followed by emerald shiner (12.7%) freshwater drum (12.2%), bluegill (5.6%), with all other species repre-i j sented by less than 8 specimens. All fishes ranged in size from 26 mm to { 375 nui, with the majority under 100 mm. The total weight of all fishes i collected in 1986 was 715 kg (15.8 lbs). Approximately 92.1% of the f total weight of fish collected (both alive and dead) was comprised of the ( gizzard shads collected in January and December. No endangered or i threatened species were collected (Commonwealth of Pennsylvania,1985). The temporal distribution of the 1986 impingement catch closely - follows the pattern of catches of previous years (1976 to 1985) (Tables V-G-3 and 85 b

---

+9wme,-r--r.g,-.-mm,.g.,v._--ve9-m--..p--,,,ww-+.---vp.

v. -,.,,,,w-.c---w.vy---e++.a-.e.--..-v.-,ee-%-- ,.,,w., %---m r..see-i -ws ww- -r m.e r w,y

DUQUESNE LIGHT COMPANY ANNUAL ENVIRONMENTAL REPORT .a. ..iir a.. i. .,e.a.: Ottestag gerest (sa.t east reals (at Q ttu,Ct it@UGN a 13.., f Stat t, woull.G ( f',) - $ !afaEO. I et vs. p,e elett) ' uni *I.EocNYEllU;at x 7 -~l /u......_,,...... aCC.il,l s.,3.st es tCE.cs0 ,3 -~? V. W e 4 i, jlf',, l it t,teca.s.t.re e ,i '4 .s aa u., a . er n... ',, g; v &m?% / u i .' i ., ;l .i i c 1 ;, l w.,,

• i.

$tO, 404 t,0f (f t,I ' * *I kJ Mitf4~ l } I' I',; lh > t' I '11113}tt p. ?- i1P* n***- 1 7.. ..u r ie..,...,a. ,,,,.,i, i. s c. i i..,,,,, a,, u..i...a,, -. e s .;.g ;;a;;,.ac o.,,... (Three dimensional: Cutaway View) hi hl_ .AT9etLt 448 i t C E ,,g.g g,9 3gg l s. t-s~ 3.tt1,,th. ves. , be ! vt 18.3 '~ [ W aart si.af p l teavtyme -"p uestA pa*tt gesegas, weg. ss

• afte e. e-1 r Itetti a.at J

M' '.'. ".*t ';,*l; __m_. a-E 4 2 9.3 1 = , r.117L*. :',', 1 m l /p N.....s t i s,w.m j (Two dimensional: Side View) l FIGURE V-G-1 INTAKE STRUCTURE BVPS l 86

- =. - - - - - -..- -. -- --. t DUQUESNE LIGHT COMPANY i 1986 Alef0AL ENVIROletENTAL REPORT i 11BLE V-G-1 FISH COLLECTED DURING THE i IMPINGEMENT SURVEYS, 1976-1986 1 BVPS I j Family and Scientific Namel Comunon Name i l Clupeidae (herrings) j Dorosoma cepedianum Gizzard shad 5 Cyprinidae (minnows and carps) I Cyprinus carpio Common carp i Notemiconus crysoleucas Golden shiner } Notropis atherinoides Emerald shiner ] N. spilopterus Spotfin shiner j

g. straminous Sand shiner N. volucellus Mimic shiner l

Pimephales notatus Bluntnose minnow j. Semotilus _atronaculatus Creek chub l ) Catostomidae (suckers)- Carpiodes cyprinus Quillback Catostomus commersoni White sucker Maxostoma carinatus River redhorse Ictaluridae (bullhead and catfishes) Ictalurus catus White catfish I_. natalis Yellow bullhead j

1. nebulosus Brown bullhead 1

I. punctatus Channel catfish Noturus flavus Stonecat l Pylodictis olivaris Flathead catfish l Percopsidae (trout-perches) j Percopsis omiscomayeus Trout-perch 1' Cyprinodontidae (killifishes) ] Fundulus diaphanus Banded killifish j Centraechidae (sunfishes) Ambloplites rupestris Rock bass Leposis cyanellus Green sunfish L. gibbosus Pumpkinseed L. macrochirus Bluegill Macropterus dolomieui smallmouth bass j M_. punctulatus Spotted bass s M_. salmoides Largemouth bass Pomoxis annularis White crappie i ,P_. nigromaculatus Black crappie l. 87 w, - y

e. - emy,,.

-.ww-. -,m,vgrpo,e-m---=+--w--r-rerw--~.~,---.z-+-n v r w-m- w. 4-w---wn n-s - m ew w,--e-v .e r-- -, - - -w ~ ~r~~

i i DUQUESNE LIGHT COMPANY 1986 ANNUAL ENVIROtSutNTAL REPORT 'N.BLE V-G-1 (Continued) Family and scientific Namel Comunon Name Percidae (pe:ches) { Etheostoma nigrum Johnny darter l E_. zonale Banded darter Perca flavenscens Yellow perch Percina caprodes Logperch P. copelandi Channel darter l Stizostedion vitreum vitreum Walleye Sciaenidae (drums) 3 i Aplodinotus grunniens Freshwater drum 1Nomenclature follows Robins et al. (1980) i i t i t I I t i 88 c--._

. - ~ _ ~. .- ~ -- - -__--.. - - ~ - 1 TABLE V-C-2 St9 MARY OF FISH COLLECTED IN IMP 1NGEMENT SURVEYS CONDUCTED FOR ONE 24 NOUR PERIOD I PCA WEEK DURING 1986 BVPS I OPERATTNG TNTARE BAYS NPEPATTNG TNTARE RAYS 2 t Precent A live Dead Alive Dead 1.ength Frequency Percent Weight Weight Weight Weight Range Os l Tama Number Occurrence Composition Number (q) Number (q) Nimmber (q) Mueher (q) (num) g C C1 :ard shad 115 35 54.0 113 6,101 2 490 46-375 q$ Comunon carp 3 6 1.4 3 16 51-97 >M Emerald shiner 27 16 12.7 11 15 18 1 1 19-67 F$ Waite catfish 1 2 0.5 1 2 65 MM Brown bullhead 1 2 0.5 1 1 48 %p Channel catfish 7 8 3.3 3 18 4 11 41-103 MM ,00 Flathead catfish 1 2 0.5 1 2 76 $h Rock bass 2 4 0.9 1 18 1 10 82-100 j7' H Creen sunfish 2 4 0.9 1 4 1 56 69-144 n i aluegill 12 14 5.6 2 3 5 8 4 8 1 1 26-60 O Smallmouth bass 1 2 0.5 1 8 83 Spotted bass 6 8 2.8 4 53 2 2 35-132 h { White crapple 2 4 0.9 2 174 168-201 y% Bass sp. 2 4 0.9 1 2 1 1 37-51 M i Yellow perch 1 2 0.5 1 3 75 logpercti 1 2 0.5 1 4 83 W d Freshwater drum 26 le 12.2 23 111 1 9 2 11 35-120 i l'nidentifiable 3 4 1.4 2 5 1 2 40-90 Total 213 22 228 165 6,262 17 156 9 507 Intake bays that had pumps operating within the 24 hour sampling period. 2 Intake bays that had no pumps operating within the 24 hour sampling period. 1 I i a

~. _ - - .. ~. _.. - ~. _ ~ _ - _ -. - -. - - i I l TABLE V-G-3 a St9 MARY OF IMPINCSSEfff SURVEY DAM FOR 1986 BVPS River Operating Hon-operatip intake Bays intate Elevation Date Number of Fish Percent intake Bays intake Bays Operattnq Water Above Mean .} sconth Dy Collected Annual Total Alive Dead Alive Dead A B C D Temp F Sea Letv1 i January 3 28 13.1 28 X 34.2 665.8 >= 10 21 9.9 21 X X 32.5 666.0 I 17 34 16.0 1 33 I 33.3 666.1 e 24 3.3 4 1 2 X 33.1 671.0 o 31 4 1.9 1 2 1 X 32.1 667.0 c: O CC February 7 3 1.4 3 X X 40.0 675.0 gM 14 2 0.9 2 X 35.8 668.1 i 21 14 6.6 6 6 1 1 X 39.2 673.2 pM 28 3 1.4 3 X 37.6 669.2 p HH Mard 7 0 0.0 X X 37.7 666.3 W@ o 14 4 1.9 1 3 X 40.7 668.8 g ei 21 3 1.4 3 X X 43.8 668.9 pn 28 2 0.9 1 1 X X 45.7 665.8 40 3% April 4 0 0.0 X X 55.0 665.8 g 11 0 0.0 X X 56.3 665.8 yg 18 1 0.5 1 X X 52.2 667.3 M 25 0 0.0 X X 52.8 667.6 o Md May 2 0 0.0 X X 61.0 666.1 9 0 0.0 X X X 65.8 666.3 i 16 1 0.5 1 X X 66.8 666.1 23 0 0.0 X 69.2 666.5 30 0 0.0 X 72.3 666.2 June 6 1 0.5 1 X 75.8 666.3 13 0 0.0 X 75.1 670.9 20 0 0.0 X 71.2 667.0 27 2 0.9 2 X 14.5 666.4 4 1 5 ^

l TABLE V-C-3 (Continued) t River Operatimp Non-Operatigg In.ake Bays intake . Elevation g Date Number of Fish Percent Tntake says intake Bays Operattnq Nater Above Mean econth Day Collected Annual Total Alive De A.1 Alive Dead A B C D Tew> *F Sea tevel I3I July 4 75.9 667.9 III 11 74.0 667.1 18 4 1.9 1 2 1 X 78.1 666.8 y 25 3 1.4 3 X X X 79.4 666.4 eco August 1 2 0.9 2 X X 79.2 665.8 8 1 0.5 1 X X 81.3 665.9 15 0 0.0 X X X 81.2 665.8 g43 22 2 0.9 1 1 X X X 81.8 665.8 p% 29 1 0.5 1 X X 77.6 666.0 r* un LC September 5 2 4.9 2 X X 77.2 666.2 12 3 1.4 1 1 1 X X 75.3 666.2 g[ 19 2 0.9 1 1 X X X 73.0 666.2

x3 O I8I 76.0 666.0 26 l

October 3 5 2.3 1 2 2 X X X 75.5 666.4 @ Q' 10 5 2.3 2 3 X X 63.0 667.0 gg i 17 10 4.7 9 1 X X 59.8 666.7 p. 24 2 0.9 1 1 X X 58.8 666.4 31 0 0.0 X X X 59.7 666.5

• o November 7

2 0.9 2 X X X 55.5 667.1 14 17 8.0 1 16 I X X X 49.0 667.7 e-1 21 2 0.9 1 1 X X X 44.2 667.8 28 6 2.8 6 I I X 46.3 672.4 December 5 4 1.9 4 X X X X 41.5 671.5 12 8 3.8 8 X X X 42.9 671.8 19 1 0.5 1 X X X 39.3 667.4 26 j 0.5 1 X X X 39.7 670.8 Total 213 22 165 17 9 1 Intake bays that had pumps operating in the 24 hour sampling period. 2 Intake bays that had no pianps operating in the 24 hour sampling period. 3 Impingement could not be conducted due to diving operations in screenhouse. Impingement could not be conducted due to screen wash psamps out of service. l i

TaaLE V-C4 StaeuaY OF FIsis Q)tJ.ECTED D lif tnCF3 ANT SistVETS, 1:76-1966 DVF5 laumber of Flah Collected 1976 1977 1975 Operating I Non-operating Operating Noe-operating Operating Noa operating Operating Non-eperating 1979 h ath Intake Baye Intake Bayes Total Intake Boys Intake Baye Total Intake Reys Istake here Total Intake Save intake Boys Total January 3,792 2,021 S.813 1,136 2,869 4,00S 106 41 227 66 16 82 February 1,087 1.0% 2,121 3,622 2,039 S,661 99 73 172 9 4 17 March 260 128 384 314 72 346 lli 149 15 10 25 April 19 il 30 7 3 10 3 1 4 1 0 1 by S 2 7 3 0 3 June 4 1 5 4 3 7 2 4 6 2 0 2 3 1 4 July 20 12 32 27 5 32 9 3 12 5 2 7 Aupet 27 10 37 6 1 7 6 52 IS 20 34 54 September 8 6 14 1 4 S 7 IS 22 9 9 le October 3S a 43 a 3 11 4 14 le 21 6 27 November 15 4 19 9 0 9 1 2 3 7 6 13 December 374 219 593 174 12 186 20 3 23 8 4 12 Total 5,646 3,4% 9,102 5,311 S,011 10,322 373 201 6% 162 100 262 Nunt,er of Flah Collected 1980 1981 w 1982 Operating I Non e,perating Operating Non-opesettog Operating Non operating Operating Non operating 00 19e1 Month Intake Reye Intake Bayes Total intake Reye . Intake Reye Total Intake Bare intake Seye Total Intake teve intake says Total January S 0 5 S 1 6 30 16 44 9 0 9 hh February 5 7 12 21 1 22 24 42 66 10 1 11 d f3 March 16 13 29 4 2 6 4 7 11 S S 10 C2 C* April 0 11 11 3 0 4 3 6 9 31 7 le >M May 0 2 2 7 2 9 1 1 2 16 3 19 FM hm 0 4 4 3 0 3 0 2 2 3 6 9 Z July 3 10 13 5 2 7 4 S 9 1 3 4 C Au pet to 4 14 12 1 13 14 0 14 2 5 7 4p MM N September 4 0 4 IS 4 19 D 3 16 16 13 29 p-e p-e g Citober 2 2 4 10 2 12 7 12 19 15 e 23 ptf O November 3 1 4 4 0 4 4 4 s 9 9 la O2 December 6 0 6 28 4 31 16 9 2S 49 to 59 yd Total 54 loe 122 19 141 120 107 227 the 70 216 gh M .-i x Number of F sh Collected > *ts 1954 M> .985 1956 Operettag Non operating Operating Isa-operating Operating Non-operating W Bleath Intake Beys Intake Baye8 Tg Intake Says intake Bare Total Istake Beye intake Says Total .o Janusry 34 19 4 3 6 90 4 94 h February 19 11 30 2 0 2 20 2 22 h ch 23 7 30 3 4 7 6 3 9 m.g April 15 4 19 0 0 0 1 0 1 by 4 1 5 2 0 2 0 1 1 June 7 2 9 1 1 2 0 3 3 July 27 2 29 4 0 4 6 1 7 Aupat 7 1 8 4 3 7 3 3 6 September 0 4 4 3 4 12 3 4 7 October 0 0 0 8 9 17 18 4 22 November 1 1 2 70 to 80 26 1 27 i December 0 2 2 24 1 25 14 0 14 Tot al 137 40 177 130 164 187 26 213 I Intake bays that had pumps operating in the 24 hr sampling period. sIntaka bays that had no pumps operating in the 24 br sampling period.

DUQUESNE. LIGHT COMPANY 3 1986 AlefUAL ENVIR005tENTAL REPORT V-G-4). During each year, generally the largest numbers of fish have j been collected in the winter months (December-February) and then the 4 i i catch has gradually decreased until the late susmer period when another, smaller peak has occurred. t other organisms collected in the impingement surveys include 143 cray-i fish, 35 native clans, and 111 dragonflies (Tables V-G-6 and V-G-8). i In addition, 488 Asiatic class (Corbicula) were collected (Table I V-G-7). I Comparison of Impinged and River Fish A comparison of the numbers of fish collected in the river and traveling screens is presented in Table V-G-5. Of the 32 species collected, 14 were observed in both locations, 2 species were collected only in the i impingement surveys, while 16 species were taken exclusively in the river. The major difference in species composition between the two types of collections is the absence of large species in the impingement col-lections. Three species of suckers (river carpsucker, white sucker, golden redhorse) and four species of sport fish (muskellunge, largemouth bass, walleye, and sauger) were collected in the river studies, but were not collected in the impingement surveys. Sport fish which were col-lected on the traveling screens (channel catfish and bluegill) were i smaller than individuals of those species collected by river sampling. j Minnows and shiners constituted a large percentage of the river and impingement collections. I i Ccaparison of Operating and Non-Operating Intake Bay Collections Of the 213 fish collected during the 1986 impingement studies, 187 1 j (87.8%) were collected from operating intake bays and 26 (12.2%) from non-operating intake bays (Table V-G-2). However, due to differences j between the number of operating (96) and non-operating (85) screens washed in 1985, the impingement data were computed with catch expressed as fish per 1,000 m2 of screen surface area washed. These results showed 10.9 and 1.7 fish for operating and non-operating screens, respectively. As in previous years, the numbers of fish collected in non-operating bays I 93 l

DUQUESNE LIGHT COMPANY 1986 ANNUAL ENVIRONMENTAL REPORT MBLE V-C-5 NINBER AND PERCENT OF ANNUAL TOTAL OF FISH COLLECTED IN IMPINGEMENT SURVEYS AND IN THE NEW CUMBERLAND POOL OF '1 TIE OHIO RIVER,1986 BVPS Total Number of Percent of Fish Collected Annual Total Species (a) Impingement River Impingement River Longnose gar 1 0.2 Gizzard shad 115 157 55.3 27.4 Mooneye 1 0.2 Muskellunge 5 0.9 Common carp 3 53 1.4 9.2 Golden shiner 1 0.2 Emerald shiner 27 204 13.0 35.5 Spottail shiner 1 0.2 Spotfin shiner 12 2.1 Sand shiner 10 1.7 Mimic shiner 19 3.3 Bluntnose minnow 6 1.0 River carpsecker 4 0.7 White sucker 3 0.5 Golden redhorse 8 0.2 White catfish 1 0.5 Brown bullhead 1 0.5 Channel catfish 7 34 3.4 5.9 Flathead catfish 1 2 0.5 0.3 White bass 1 0.2 Rock bass 2 3 1.0 0.5 Green sunfish 2 1 1.0 0.2 Bluegill 12 2 5.8 0.3 i Smallmouth bass 1 9 0.5 1.6 l Spotted bass 6 13 2.9 2.3 Largemouth bass 3 0.5 White crappie 2 2 1.0 0.3 Yellow perch 1 1 0.5 0.2 Logperch 1 3 0.5 0.5 Sauger 11 1.9 Walleye 1 0.2 Freshwater drum 26 3 12.5 0.5 J Total 208 574 (a) Includes only those specimens identified to species or stocked hybrids. 94

DUQUESNE LIGHT COMPANY 1986 ANNUAL ENVIROtMENTAL REPORT 'mBLE V-G-6 SIMtARY OF CRAYFISH QLLECTED IN IMPINGEMENT SURVEYS CONDUCTED PUR ONE 24-HOUR PERIOD PER WEEK, 1986 BVPS Number Collected Operating Non-Operating Date Intake Bays Intake Bays Month Day Alive Dead Alive Dead January 3 0 1 0 0 10 0 0 0 0 17 0 0 1 0 24 0 0 0 0 31 0 0 10 0 February 7 0 0 0 0 14 1 0 0 0 21 0 0 3 1 28 0 0 1 3 March 7 1 0 0 2 14 4 0 0 1 21 2 0 7 0 28 2 0 0 0 April 4 0 2 1 2 11 0 0 0 0 18 0 0 0 0 25 0 0 0 0 May 2 0 1 0 0 9 0 0 1 0 16 1 1 1 0 23 0 2 0 0 30 1 1 0 3 June 6 1 1 0 3 13 3 0 2 1 20 2 0 4 2 27 1 1 1 2 July 4(a) 11(a) 18 1 1 0 1 25 1 2 0 0 t 95

j 4 7 DUQUESNE LIGHT COMPANY 1986 ANNUAL ENVIROlGUINTAL REPORT 'IRBLE V-G-6 (Continued) Number Collected Operating Non-Operating Date Intake Bays Intake Bays Month DE Alive Dead Alive Dead i August 1 0 3 1 1 8 0 2 1 0 15 1 0 0 0 22 1 1 0 0 29 0 1 0 1 September 5 1 0 0 0 12 1 0 0 1 19 (b) 0 0 0 0 26 October 3 0 2 0 1 10 0 0 0 4 17 0 0 0 0 24 0 0 0 0 31 0 0 0 0 i November 7 0 0 0 0 l 14 2 0 0 0 21 3 1 0 0 28 12 0 0 0 December 5 4 0 0 0 12 2 0 0 0 19 2 1 0 0 26 4 1 1 0 Total 54 25 35 29 (a) Impingement could not be conducted due to diving operations in screenhouse. (b) Impingement could not be conducted due to screen wash pumps out-of-service. 96

DUQUESNE LIGHT COMPANY 1986 AltfDAL ENVIRONMENTAL REPORT 11BLE V-<e-7 SIMERY OF Corbicula COLLECTED DURING IMPINGEMENT SURVEYS FOR ONE 24-HOUR PERIOD PER WdEK,1986 BVPS Number Collected 2 Operating Non-Operating Date Intake Bays Intake Bays Month Day Alive Dead Alive Dead January 3 0 0 0 1 10 0 0 0 1 17 0 0 0 2 24 0 0 1 2 31 0 2 0 1 February 7 0 0 0 0 14 0 0 0 0 21 0 0 4 13 28 0 1 3 12 i March 7 0 3 1 6 14 0 0 0 6 21 0 7 0 5 28 0 0 0 1 April 4 0 0 0 2 11 0 3 0 2 18 0 6 0 1 25 0 0 0 3 May 2 0 3 0 0 9 2 5 1 1 16 0 3 0 4 23 0 4 1 5 30 1 3 0 9 4 i June 6 13 10 3 7 13 4 8 1 4 20 4 1 2 1 27 1 5 1 15 4 July 4 (a) 11(a) 18 2 4 0 4 25 0 2 0 0 97 r I

DUQUESNE LIGHT COMPANY 1986 AltiUAL ENVIRONMENTAL REPORT i 'mBLE V-G-7 (Continued) Number Collected Operating Non-Operating Date Intake Bays Intake Bays Month DE Alive-Dead Alive Dead August 1 5 25 4 19 8 0 9 0 9 15 1 5 0 1 22 2 3 0 0 29 1 5 0 4 September 5 2 3 0 3 12 1 5 4 5 19 4 9 0 2 26 (b) October 3 12 17 1 1 10 4 8 12 12 17 0 6 2 6 I 24 1 0 1 1 31 2 2 0 1 November 7 1 2 0 0 14 5 10 0 0 21 3 5 0 1 28 3 15 0 0 December 5 0 0 0 0 12 0 0 0 0 19 0 0 0 0 26 0 0 0 0 TOTAL 74 199 42 173 (a) Impingement could not be conducted due to diving operations in screenhouse. (b) Impingement could not be conducted due to screen wash pumps out of service. 98 o

DUQUESNE LIGHT COMPANY 1986 ANNUAL ENVIRONMENTAL REPORT MBLE V-G-8 SUM 4ARY OF MISCELIANEOUS INVERTEBRATES COLLECTED IN IMPINGEMENT SURVEYS CONDUCTED FOR ONE 24-HOUR PERIOD PER WEEK, 1986 BVPS Date Number of Organisms in all Bays Month DR Mollusks (c) Dragonflies Snails Leeches January 3 0 0 0 0 . 10 0 0 0 0 17 0 0 0 0 24 0 1 0 0 31 0 0 0 0 February 7 0 0 0 0 14 0 0 0 0 21 0 0 0 0 28 0 0 0 0 March 7 0 0 0 0 14 0 1 0 0 21 0 0 0 0 28 1 1 0 0 April 4 4 3 0 0 11 1 2 0 0 18 1 1 0 0 25 1 1 0 0 May 2 1 3 0 0 9 2 8 0 0 16 3 2 0 0 23 0 2 0 0 30 1 9 0 0 June 6 0 2 0 0 13 0 32 0 1 20 6 7 0 0 27 7 4 0 0 July 4 (a) ll(a) l 18 2 3 0 0 i 25 0 5 0 0 ~ \\ 99

l DUQUESNE LIGHT COMPANY 1986 ANNUAL ENVIRO WENTAL REPORT MBLE V-G-8 (Continued) Date Number of Organisms in all Bays Month Day Mollusks (C) Dragonflies Snails Leeches-August 1 0 7 0 0 8 0 2 0 0 15 0 0 0 0 22 1 0 0 0 29 0 0 0 0 l September 5 0 0 1 0 12 0 0 0 0 l 0 1 0 0 19 (b) 26 October 3 0 2 0 0 10 1 9 0 0 l 17 0 0 0 0 24 0 0 0 0 31 0 1 0 0 November 7 0 0 0 0 14 2 2 0 0 21 1 0 0-0 1 28 0 0 0 0 December 5 0 0 0 0 12 0 0 0 0 19 0 0 0 0 26 0 0 0 0 Total 35 111 1 1 (a) Impingement could not be conducted due to diving operations in screenhouse. (b) Impingement could not be conducted due to screen wash pumps out-of-service. IC) Other than Corbicula. l 100

DUQUESNE LIGHT COMPANY 1986 ANNUAL ENVIRONMENTAL REPORT indicates that fish entrapment, rather than impingement, accounts for some of the catch. Entrapnent occurred when fish were lif ted out of the water on the frame plates as the traveling screen rotates. Alterna-tively, impingement occurred when fish were forced against the screen due to velocities created by the circulating water pumps. Of the 143 crayfish collected in the 1986 impingement studies, 79 (55.2%) were collected from operating bays and 64 (44.8%) were collected from non-operating bays (Table V-G-6). Adjusting these data for screen sur-face area washed (crayfish per 1,000 m ) the results show 4.6 and 4.2 2 crayfish for operating and non-operating screens, respectively. Corbicula collected in the 1986 studies included 273 (56<0%) in the oper-ating bays and 250 (44.0%) in the non-operating bays (Table V-G-7). Again, adjusting these data for the screen surface area washed (Corbicula 2 per 1,000 m ) the results show 15.9 and 14.2 Corbicula for operating the non-operating screens, respectively. Summary and Conclusions The results of the 1986 impingement surveys indicate that withdrawal of river water at the BVPS intake for cooling purposes has little or no effect on the fish populations. Two hundred and thirteen (213) fishes were collected, which is the fifth fewest collected since initial opera-tion of BVPS in 1976. Gizzard shad were the most numerous fish, compris-ing 54.0% of the total annual catch. The total weight of all fishes collected in 1986 was 7.15 kg (15.8 lbs). Of the 213 fishes collected, 39 (18.3%) were alive and returned via the discharge pipe to the Ohio River. 101

DUQUESNE LIGHT COMPANY 1986 ANNUAL ENVIRONMENTAL REPORT H. PLANKTON ENTRAINMENT 1. Ichthyoplankton Objectives The ichthyoplankton entrainment studies are designed to determine the species composition, relative abundance, and distribution of ichthyo-plankton found in proximity to the BVPS intake structure. Methods Previous studies have demonstrated that species composition and relative abundance of ichthyoplankton samples collected in front of the intake structure were very similar to those ichthyoplankton entrainment samples taken at BVPS (DLCo 1976,1977,1978, and 1979). Based on these results, a modified sampling program was utilized from 1980 through the current sampling season which sampled the Ohio River along a transect adjacent to the BVPS intake structure (Figure V-F-1). Samples were collected monthly, from April through August, during daylight hours along a five station transect. A night collection was made in May and July. Surface tows were made at Stations 1, 3, and 5 and bottom tows were taken at Station 2 and 4 utilizing a 505 micron mesh plankton net with a 0.5 m diameter mouth. Sample volumes were measured by a General Oceanics Model 2030 digital flowmeter mounted centrically in the mouth of the net. Samples were preserved upon collection in 5% buffered formalin containing rose dengal dye. In the laboratory, eggs, larvae, juveniles, and adults were sorted from the samples, identified to the lowest possible taxon and stage of devel-opment, and enumerated. Densities of ichthyoplankton (number /100m ) 3 were calculated using appropriate flowmeter data. Results A total of 172 eggs, 695 larvae,12 juveniles, and 4 adults representing twelve taxa of seven familes were collected from 3776.4 m3 of water fil-tered during sampling along the river entrainment transects (Table V-H-1). Shiners and gizzard shad were the most common taxa, representing 25.8% and 23.8% of the total catch. Shiners comprised 31.9% of the 102

TABLE V-H-1 NIMBER Als DENSITY p)r FISR EOCS, IARVAE, JUVENILES, AfD ADOLTS (Number /100 m COLLECTED NITH A 0.5 m PLANKTON NET AT THE ElfrRAff94Elfr RIVER TRANSECT IN 1HE ORIO RIVER NEAR BVPS,1986 Total Collected and Date Station 1 Station 2 Station 3 Station 4 Station 5 Taxa Denalty

Day, Night Dg Night M

Might M Night Dy Night 18 April 3 Vol. water filtered (m ) 79.3 135.6 129.7 58.4 120.2 523.2 No. eggs collected 0 0 0 0 0 0 No. larvae collected 0 1 1 1 0 3 No, juveniles collected 0 0 0 0 0 0 No. adults collected 0 0 0 0 0 0 Density (number collected) m Eggs 0 0 0 0 0 0 Larvae gC ts Stizostedion opp. (EL)* 0 0.74(1) 0.77(1) 1.71(1) 0 0.57(3) $h Total Station Density (number collected) 0 0.74(1) 0.77(1) 1.71(1) 0 0.57(3) M 13/14 Nav <: t* HH 3 Vol. water filtered (m ) 108.3 99.9 79.9 58.7 123.5 107.1 90.6 17.7 122.3 96.8 904.8 o :z: yd No. eggs collected 0 2 5 lo 0 58 0 0 1 2 78 No. larvae collected 2 11 18 4 11 17 2 0 2 4 71 gOO No. Juveniles collected 0 0 1 0 0 0 0 0 0 0 1 N No. adults collected 0 0 0 0 0 0 0 0 0 1 1 Density (number collected) UI Eggs M Aplodinotus grunniens 0 0 0 6.81(4) 0 37.35(40) 0 0 0 2.07(2) 5.08(46) Unidentified 0 2.00 (2) 6.26(5) 10.22(6) 0 16.81(18) 0 0 0.82(1) 0 3.54(32) O Larvae g H Dorosoma cepedianum (YL) 1.85(2) 11.01(11) 20.03(16) 0 7.29(9) 12.14(13) 2.21(2) 0 0.82(1) 0 5.97(54) Dorosoma cepedianum (EL) 0 0 0 0 0 1.87(2) 0 0 0.82(1) 1.03(1) 0.44(4) cyprinus carpio (YL) 0 0 1.25(1) 3.41(2) 0 1.87(2) 0 0 0 0 0.55(5) i Notropis spp. (YL) 0 0 0 0 0 0 0 0 0 1.03(1) 0.11(1) Catostomidae (YL) 0 0 1.25(1) 0 0 0 0 0 0 1.03(1) 0.22(2) Catostomidae (EL) 0 0 0 1.70(1) 0.81(1) 0 0 0 0 1.03(1) 0.33(3) Unidentifiable (*L) 0 0 0 1.70(1) 0.81(1) 0 0 0 0 0 0.22(2) Juveniles j Tctaturus punctatus (JJ) 0 0 1.25(1) 0 0 0 0 0 0 0 0.11(1) Adults Motropis stramineus 0 0 0 0 0 0 0 0 0 1.03(1) 0.11(1) Total Station Density (number collected) 1.85(2) 13.01(13) 30.04(24) 23.85(14) 8.91(11) 70.03(75) 2.21(2) 0 2.45(3) 7.23(7) 16.69(151) 4

TAILE V-H-1 (Continued) Total Date Station 1 Station 2 Station 3 Station 4 Station 5 Taxa Density Collected and D_ay Hight M Night D3 Night Dy Night Dg Night 19 June 3 Vol. water filtered (m ) 83.9 130.8 141.3 139.0 137.8 632.8 No. eggs collected 12 15 3 8 3 41 No. larvae collected 62 35 20 11 49 177 No juveniles collected 0 0 0 0 0 0 No. adults collected 0 0 1 0 1 2 Density (number collected) r. Eggs y Unidentified 14.30(12) 11.47(15) 2.12(3) 5.76(8) 2.18(3) 6.48(41) cm Larva 4 ey Dorsona ceptdianum (YL) 2.38(2) 0 0 1.44(2) 0.73(1) 0.79(5) c (! c: Dorsona cepedianum (EL) 56.02(47) 20.64(27) 13.45(19) 2.16(3) 21.04 (29) 19.75(125) g to Dornoma cepedianum (LL) 0 0 0 0 2.18(3) 0.47(3) cyprinus carpio (YL) 2.38(2) 0.76(1) 0.71(1) 2.16(3) 0.73(1) 1.26(8) Q td l cyprinus carpio (EL) 1.19(1) 0.76(1) 0 1.44(2) 0 0.63(4) a to Notropis atherinoides (EL) 5.96(5) 0 0 0.72(1) 1.45(2) 1.26(8) p. c3 Notropis spp. (YL) 1.19(1) 0.76(1) 0 0 0 0.32(2) F4!$gj Notropis spp. (EL) 3.58(3) 2.29(3) 0 0 4.35(6) 1.90(12) {g*4 p: Perca flavescens (EL) 0 0 0 0 5.08(7) 1.11(7) M (1 Aplodinotus grunniens (YL) 0 0.76(1) 0 0 0 0.16(1) Z C) Unidentifiable (*L) 1.19(1) 0.76(1) 0 0 0 0.32(2) kh Adult h Notropis stramineus 0 0 0.71(1) 0 0.73(1) 0.32(2) pa 4 Total Station Density (number collected) 88.20(74) 38.23(50) 16.99(24) 13.67(19) 38.46(53) 34.77(220) fj

• c) 15/16 July 3

Vol water filtered (m ) 103.6 89.9 127.3 105.4 162.0 108.7 157.1 92.5 128.8 13.5 1148.8 No. eggs collected 0 17 0 18 0 0 2 9 3 4 53 No. larvae collected 42 38 3 4 8 6 11 19 13 63 207 No. juveniles collected 1 1 0 1 0 0 0 2 0 6 11 No, adults collected 0 0 0 0 0 0 0 1 0 0 1 Density (number collected) Eggs Aplodinotus grunniens 0 12.24(11) 0 9.49(10) 0 0 0.64(1) 7.57(7) 0 5.44(4) 2.87(33) Unidentified 0 6.67(6) 0 7.59(8) 0 0 0.64(1) 2.16(2) 2.33(3) 0 1.74(20) Larvae Dorsona cepedianum (EL) 0 0 0 0 0.62(1) 0 0 3.24(3) 0 0 0.35(4) cyprinus carpio (YL) 0 0 0.79(1) 0 0 0 0 0 0 2.72(2) 0.26(3) cyprinus carpio (EL) 0 2.22(2) 0 0 0.62(1) 0 0.64(1) 0 0 1.36(1) 0.44(5) Notropis atherinoides (EL) 16.41(17) 21.13(19) 0.79(1) 0 0.62(1) 2.76(3) 0 0 8.54(11) 47.62(35) 7.57(87) Notropis spp. (YL) 0 4.45(4) 0.79(1) 1.90(2) 0.62(1) 0.92(1) 3.82(6) 12.97(12) 0 0 2.35(27) t

TABLE V-H-1 (Continued) Total Collpeted and Date Station 1 Station 2 Station 3 Station 4 Station 5 Taxa Density Day Night M Night Day Night g Night Day Night 15/16 July Notropis app. (EL) 21.24(22) 4.45(4) 0 0.95(1) 1.23(2) 0 2.55(4) 1.08(1) 0.78(1) 25.85(19) 4.70(54) Etheostoma spp. (EL) 1.93(2) 0 0 0 1.23(2) 0 0 0 0.78(1) 0 0.44(5) Perca flavescens (YL) 0 0 0 0 0 0 0 1.08(1) 0 0 0.09(1) Perca flavescens (EL) 0 7.79(7) 0 0 0 0.92(1) 0 0 0 8.16(6) 1.22(14) Aplodinotus grunniens (YL) 0.97(1) 0 0 0.95(1) 0 0 0 2.16(2) 0 0 0.35(4) Aplodinotus grunniens (EL) 0 1.11(1) 0 0 0 0 0 0 0 0 0.09(1) Unidentifiable (*L) 0 1.11(1) 0 0 0 0.92(1) 0 0 0 0 0.17(2) Juveniles Ch Dornosa cepedianum (JJ) 0 0 0 0 0 0 0 1.08(1) 0 6.80(5) 0.52(6) p ty Notropis athrenoides (JJ) 0.97(1) 1.11(1) 0 0 0 0 0 0 0 0 0.17(2) 0 C: Tctalurus punctatus (JJ) 0 0 0 0.95(1) 0 0 0 0 0 0 0.09(1) !!i! Pomoxis spp. (JJ) 0 0 0 0 0 0 0 0 0

1. 36 (1) 0.09(1) ll{j Etheostoma spp. (JJ) 0 0

0 0 0 0 0 1.08(1) 0 0 0.09(1) sc Adult Q D1 Notropsis stramineus 0 0 0 0 0 0 0 1.08 (1) 0 0 0.09(1) < r* p. 91 >4 (! Total Station Density (number collected) 41.51(43) 62.29(56) 2.36(3) 21.82(23) 4.94(8) 5.52(6) 8.27(13) 33.51(31) 12.42(16) 99.32(73) 23.68(272) ll ps 0 12 August 50 k3 %50 3 vol. water filtered (m ) 99.6 115.5 132.2 114.6 104.9 566.8 l[ No. eggs collected 0 0 0 0 0 0 W *< No. larvae collected 85 10 44 11 87 237 [0 No, juveniles collected 0 0 0 0 0 0 0 No. adults collected 0 0 0 0 0 0 fj Density (number collected) Eggs 0 0 0 0 0 0 Larvae Dorsona cepedianum (YL) 0 0 0.76(1) 0 0 0.18(1) Dorsona cepedianum (EL) 0 0.87(1) 1.51(2) 0 4.77(5) 1.41(8) cyprinus carpio (EL) 0 0.87(1) 0 0 0 0.18(1) Notropis spp. (EL) 15.06(15) 0.87(1) 2.27(3) 0.87(1) 10.49(11) 5.47(31) Pinephales spp. (YL) 0 0 0.76(1) 0 0.95(1) 0.35(2) Pinephales spp. (EL) 70.28(70) 1.73(2) 27.23(36) 3.49(4) 66.73(70) 32.11(182) Aplodinotus grunniens (YL) 0 3.46(4) 0 3.49(4) 0 1.41(8) Aplodinotus grunniens (EL) 0 0.87(1) 0 1.75(2) 0 0.53(3) Unidentifiable (*L) 0 0 0.76(1) 0 0 0.18(1) Total Station Density 1 (number collected) 85.34(85) 8.66(10) 33.28(44) 9.60(11) 82.94(87) 41.81(237)

TABLE V-R-1 (Continued) Total collected and Date Station 1 Station 2 Station 3 Station 4 Station 5 Taxa Density g Night g Night Dy Night g Night g Night Yearly Total l Vol. water filtered (a ) 474.7 189.8 589.1 164.1 688.7 215.8 559.7 110.2 614.0 170.1 3,776.4 No. eggs mllected 12 19 20 28 3 58 10 9 7 6 172 No. larvae collected 191 49 67 8 84 23 36 19 151 67 695 No. juveniles cnllected 1 1 1 1 0 0 0 2 0 6 12 No adults collected 0 0 0 0 1 0 0 1 1 1 4 DeMity (number collected) i Eggs Aplodinotus grunniens 0 5.80(11) 0 8.53(14) 0 18.54(40) 0.18(1) 6.35(7) 0 3.52(6) 2.09(79) Unidentified 2.53(12) 4.21(8) 3.40(20) 8.53(14) 0.44(3) 8.34(18) 1.61(9) 1.81(2) 1.14(7) 0 2.46(93) i Larvae Dorsnma cepedianum (YL) 0.84(4) 5.80(11) 2.72(16) 0 1.45(10) 6.02(13) 0.71(4) 0 0.33(2) 0 1.59(60) Dorsona cepedianum (EL) 9.90(47) 0 4.75(28) 0 3.19(22) 0.93(2) 0.54(3) 2.72(3) 5.70(35) 0.59 (1) 3.73(141) Dorsona cepedianum (LL) 0 0 0 0 0 0 0 0 0.49(3) 0 0.08(3) 4 gCc 2 cyprinus carpio (YL) 0.42(2) 0 0.51(3) 1.22(2) 0.15(1) 0.93(2) 0.54(3) 0 0.16(1) 1.17(2) 0.42(16) go cyprinus carpio (EL) 0.21(1) 1.05(2) 0.34(2) 0 0.15(1) 0 0.54(3) 0 0 0.59(1) 0.26(10) cc Pinephales spp. (YL) 0 0 0 0 0.15(1) 0 0 0 0.16(1) 0 0.05(2) Pimephales spp. (EL) 14.75(70) 0 0.34(2) 0 5.23(36) 0 0.71(4) 0 11.40(70) 0 4.02(182) 2 Notropis atherinoides (EL) 4.63(22) 10.01(19) 0.17(1) 0 0.15 (1) 1.39(3) 0.18(1) 0 2.12(13) 20.55(35) 2.52(95) $M Notropis spp. (YL) 0.21(1) 2.11(4) 0.34(2) 1.22(2) 0.15(1) 0.46(1) 1.07(6) 10.89(12) 0 0.59(1) 0.79(30) <M o" Notropis spp. (EL) 8.43(40) 2.11(4) 0.68(4) 0.61(1) 0.73(5) 0 0.89(5) 0.91(1) 2.93(18) 11.16(19) 2.57(97) Catostomidae (YL) 0 0 0.17(1) 0 0 0 0 0 0 0.59(1) 0.05(2) OZ Catostomidae (EL) 0 0 0 0.61(1) 0.15(1) 0 0 0 0 0.59(1) 0.08(3) h Etheostoma (EL) 0.42(2) 0 0 0 0.29(2) 0 0 0 0.16(1) 0-0.13(5) @Q Perca flavescens (YL) 0 0 0 0 0 0 0 0.91(1) 0 0 0.03(1) Hg Perca flavescens (EL) 0 3.69(7) 0 0 0 0.46(1) 0 0 0 3.52(6) 0.37(14) h .Stizostedion app. (EL) 0 0 0.17(1) 0 0.14 (1) 0 0.18(1) 0 0 0 0.08(3) b Aplodinotus grunniens (YL) 0.21(1) 0 0.05(5) 0.61(1) 0-0 0.71(4) 1.81(2) 1.14(7) 0 0.53(20) $~ Aplodinotus grunniens (EL) 0 0.53(1) 0.17(1) 0 0 0

0. 36 (2) 0-0 0

0.11(4) Unidentifiable (*L) 0.21(1) 0.53(1) 0.17(1) 0.61(1) 0.29(2) 0.46(1) 0 0 0 0 0.19(7) O Juven!!es H Dorsona cepedianum (JJ) 0 0 0 0 0 0 0 0.91(1) 0 2.94(5) 0.16(6) Notropis atherinoides (JJ) 0.21(1) 0.53(1) 0 0 0 0 0 0 0 0 0.05(2) Tctalurus punctatus (JJ) 0 0 0.17(1) 0.61(1) 0 0 0 0 0 0 0.05(2) Pomoxis spp. (JJ) 0 0 0 0 0 0 0 0 0 0.59 (1) 0.03(1) Etheostoma spp. (JJ) 0 0 0 0 0 0 0 0.91(1) 0 0 0.03(1) Adults Notropis stramineus 0 0 0 0 0.15(1) 0 0 0.91(1) 0.16(1) 0.59(1) 0.11(4) ] Total Station Density (number collected) 42.97(204)36.35(69) 14.94(88) 22.55(37).12.78(88) 37.53(81) 8.22(46) 28.13(31) 25.90(159146.98(80) 23.38(883) aDevelopmental Stages YL - Hatched specimens with yolk and/or 011 globules present. l EL - Specimens with no yolk and/or oil globules and with no development of fin rays and/or spiny elements. LL - Specimens with developed fin rays and/or spiny elements and evidence of a fin fold.

• L - Specimens with undefinable larval stage due to damage or deterioration.

JJ - Specimens with complete fin and pigment development, i.e., inunature adult.

DUQUESNE LIGHT COMPANY 1986 ANNUAL ENVIRONMENTAL REPORT larvae, and 16.7% of juveniles collected. Gizzard shad comprised 29.4% of the larvae, and 50.0% of the juveniles. Eggs (833) made up 19.5% of the total ichthyoplankton catch. Seasonal Distribution No eggs were collected during the first survey (18 April) and the last survey (12 August) (Table V-H-1). The two night collections (14 May and 16 July) resulted in a sample density average of 28.67/100 m3 and 40.21/100 m3 The 19 June collection yielded a sample density average of 34.77/100 m3 of which gizzard shad larvae and unidentified eggs made up 60.5% and 18.6% of the catch, respectively. The 15 July (day) collection showed a decreased sample density of 12.33/100 m3 (Table V-H-1). Greatest density per sample (41.81/100 m3) was obtained on 12 August. This was due to a large catch of minnows (Pimephales spp. larvae) at station 1, 3, and 5 (Table V-H-1). Greatest density per station was obtained on 16 July (night) at station 5 (99.32/100 m3). Larvae of emerald shiner and unidentified shiner spp. comprised 74.0% of station 5 sample (Table V-H-1). Spatial Distribution Larvae were dominant at all stations, however highest densities were at Stations 1 and 5. Most of the larvae collected at Stations 1 and 5 were minnows and shiners. Stations 1, 2, 3, 4, and 5 yielded 240, 7$, 107, 55 and 218 larvae respectively. Summary and Conclusions The similarity of species composition and relative abundance of ichthyo-plankton taken in 1986 along the river transect to those of 1979-1985, combined with the close correlation between river sampling in front of the intake and actual entrainment sampling established in previous years (DLCo 1976, 1977,1978 and 1979) suggests little change in ichthyoplank-ton entrainment impact by BVPS in 1986. 107

DUQUESNE LIGHT COMPANY 1986 ANNUAL ENVIRONMEMTAL REPORT 1 2. Phytoplankton Objectives The phytoplankton entrainment study was designed to determine the compo-sition and abundance of phytoplankton entrained in the intake water system. Methods Af ter April 1, 1980, plankton sampling was reduced to one entrainment sample collected monthly. Each sample was 1 gal taken from below the skimmer wall from one operating intake bay. In the laboratory, phytoplankton analyses were performed in accordance with procedures described above in Section C, PHYTOPLANKTON. Total den-sities (cells /ml) were calculated for all taxa. However, only densities of the 15 most abundant taxa each month are presented in Section C of this report. Comparison of Entrainment and River Samples Plankton samples were not collected at any river stations af ter April 1, 1980 due to a reduction of the aquatic sampling program, therefore, com-parison of entrainment and river samples was not possible for the 1986 phytoplankton program. Results of phytoplankton analyses for the entrainment sample collected monthly are presented in Section C, PHYTO-PLANKTON. During the years 1976 throught 1979, phytoplankton densities of entrain-ment samples were usually slightly lower than those of mean total densi-ties observed from river samples (DLCo 1980). However, the species com-position of phytoplankton in the river and in the entrainment samples were similar (DLCo 1976, 1977, 1979, 1980). Studies from previous years indicate mean Shannon-Weiner indices, even-ness and richness values of entrainment samples were very similar to the river samples (DLCo 1979, 1980). 108

DUQUESNE LIGHT COMPANY 1986 ANNUAL ENVIRONMENTAL REPORT Sumary and Conclusions Past results of monthly sampling of phytoplankton in the Ohio River near BVPS and within the intake structure showed little difference in densi-ties (cells /ml) and species composition. During periods of minimum low river flow (5,000 cfs), about 1.25% of the river would be withdrawn into the condenser cooling system. Based on the similarity of density of phytoplankton in the river and the BVPS intake structure, and the small amount of water withdrawn from the river, the loss of phytoplankton was negligible, even under worst case low flow conditions. 3. Zooplankton Objectives The zooplankton entrainment studies were designed to determine the com-position and abundance of zooplankton entrained in the intake water system. Methods Plankton entrainment samples were collected and zooplankters were counted. For the zooplankton analyses, a well-mixed sample was taken and processed using the same procedures described in Section D, ZOOPLANKTON. After April 1, 1980, plankton sampling was reduced to one entrainment sample collected monthly. Each sample was 1 gal taken from below the skimer wall from one operating intake bay. Total densities (number / liter) were calculated for all taxa, however, only taxa which comprised greater than 2% of the total are presented in Section D, ZOOPLANKTON. Comparison of Entrainment and River Samples Plankton samples were not collected at any river stations af ter April 1, 1980 due to a reduction of the aquatic sampling program, therefore, com-parison of entrainment and river samples was not possible for the 1986 l zooplankton program. Results of zooplankton analyses for the entrainment l sample collected monthly are presented in Section D, ZOOPLANKTON. 109

DUQUESNE LIGHT COMPANY 1986 ANNUAL ENVIRONMENTAL REPORT During past years, composition of zooplankton was similar in entrainment and river samples (DLCo 1980). Protozoans and rotifers were predominant, whereas crustaceans were sparse. Densities of the four most abundant taxa for each month (DLCo, 1976,1977,1979, and 1980) indicate the same taxa were present in both river and intake samples. In addition, they were present in similar quantities. Shannon-Weiner indices, evenness, and richness values for river and entrainment samples were also similar, further demonstrating similarity between entrained and river zooplankton. Summary and Conclusions Past results of monthly sampling of zooplankton in the Ohio River near BVPS and within the intake structure showed little difference in densi-ties (number / liter) and species composition. During periods of minimum, low river flow (5,000 cfs), about 1.25% of the river would be withdrawn into the condenser cooling system. Based on the similarity of density of zooplankton in ther river and the BVPS intake structure, and the small amount of water withdrawn from the river, the loss of zooplankton was negligible, even under worst case low flow conditions. l 110

DUQUESNE LIGHT COMPANY 1986 ANNUAL ENVIRONMENTAL REPORT I. Corbicula MONITORING PROGRAM Introduction The introduced Asiatic clam, Corbicula fluminea (Figure V-I-1), was first detected in the United S tates in 1938 in the Columbia River near Knappton, Washington (Burch 1944). It has since spread throughout the country, inhabiting any suitable freshwater body. Information from prior aquatic surveys has demonstrated the presence of Corbicula in the Ohio River in the vicinity of the BVPS, and the plant is listed in NUREG/CR-4233 (Counts 1985). One adult clam is capable of producing many thousands of larvae called veligers. These veligers are very small (approximately 0.2 mm) and may pass easily through the water passages of a power plant. Once the veliger settles and attaches itself to the substrate, growth of the clam occurs very quickly. If clams develop within a power plant's water pas-sages, they it.pa ir the flow of water through the plant. Reduction of flow may be so severe that a plant shutdown is necessary, as occurred in 1980 at Arkansas Nuclear One Power Plant. The clams are of particular concern when they develop undetected in emergency systems where the flow of water is not constant. (IE Bulletin 81-03). These clams are extremely hardy; they can live out of water for more than a week. Poisons and other water-borne control methods have generally proved to be inadequate because the clams can survive prolonged periods closed in their shells. I i The Corbicula Monitoring Program includes the Ohio River and the circu-lating cooling water system cf the BVPS (intake structure and cooling towe r). This report describes this Monitoring Program and the results obtained during field and plant surveys conducted during the spring and fall, 1986. Objectives The two objectives of the Monitoring Program were to evaluate the presence of Corbicula at the BVPS and to assess the population of Corbicula in the Ohio River in order to evaluate the potential for infestation of the BVPS. 111 l

DUQUESNE LIGHT COMPANY ANNUAL ENVIRONMENTAL REPORT i a cm i I I I l 2 3 .cm, / 4 1 l Cody 1985, Aquatic Systerns Corporation Photographs 1 and 3 show key characteristic (serrated hinges) for genus level identification FIGURE V-I-l PHOTOGRAPHS OF Corbicula COLLECTED AT BVPS 112

DUQUESNE LIGHT COMPANY 1906 ANNUAL ENVIRONMENTAL REPORT Methods Collections were made (19 May) in the upper and lower reservoirs of Unit 1 1 Cooling Tower during a scheduled shutdown refueling period. Samples l were collected using a (6x6") petite Ponar dredge. Four samples were taken in the upper reservoirs one at the north side, two at the east side (cat walk), and one at the south side of the cooling tower. The lower reservoir was sampled at seventeen (17) stations within the cooling tower using a 14' boat (Figure V-I-2). The substrate of each sample was characterized at the time of collection. The samples were then returned to the laboratory and sorted for Corbicula within 24 hours of collection. This procedure increased overall sorting efficiency because formalin, normally used to preserve the samples for 1 long periods of time, was not needed and live Corbicula could be seen moving in the sorting trays. Counts were made of live and dead Corbicula ] for each dredge sample. These counts were converted to densities 2 (clams /m ) for each collection based on the surface area sampled by the dredge. Plant operations personnel have the intake surveyed semi-annually by divers for silt buildup, and if necessary, the intake bays are cleaned. Cleaning of all four bays occurred in July 1986 by divers using a Flygt 20 hp submersible pump. This pump has a capacity of 500 gpm (1,750 rpm) and uses a five inch propeller to push water and debris through a flex-ible hose (Jenkins and Logar 1985). Water and debris were sluiced through the drainage system of the intake structure, where some of the larger clam shells remained after the cleaning operations. Survey of the auxilary intake also was made. Field collections were usually made during the same week as in-plant collections. Samples were collected using either a regular Ponar (9x9") or a petite Ponar (6x6") dredge along transects across each of the water bodies. Eight transects were established along the Ohio River, two upstream, five downstream and one at the plant intake (Figure V-I-3). 113

DUQUESNE LIGHT COMPANY ANNUAL ENVIRONMENTAL REPORT (TWO DIMENSIONAL: CROSS SECTIONAL HORIZONAL VIEW) i N 4 {, -, o w& lt 11 8 l 9 O STAI R WAY '3 2 e e e 7 9 { 17 99 16 9 e

1. 14 e3 STAIRWAY N

e. a 4 M 7' 's 6 1 WATER OUTLET u l EQUIPMENT I ACCESS RAMP 50 FEET l O SAMPLE LOCATION WITHIN THE LOWER WATER RESERVOIR FIGURE V-I-2 Corbicula MONITORING PROGRAM SAMPLING STATIONS OF THE LOWER RESERVOIR OF UNIT I COOLING TOWER BVPS 114

BEAVCH HIVEN N HOCHLSIFR BLAVER \\ \\ S CONWAY 37 5 33O \\o { YANDS 3 f. O OHIOVI EW $ I O NACCOO.V G$ $] IDLAND MONTGOMERY h p LOCKSttDAM gM GLOHGE TOWN HADEN 4' 1 H b y [y All0VIPPA POWEH 35.7 STATlON [ gpO 35 4 f MBRIDGE & :g O l __2 4 m i34 8 35 O SCALE MIL E S ~ h ea

1. L G E N D sOuTu ncion is

>- 4 SAMPLL S I AT ION HIVL H MIL L POIN T ti f oAssicoos LOCeAOAM FIGURE V-I-3 Corbicula MONI'IURING PROGRAM SAMPLING STATIONS, OHIO RIVER SYSTEM 4 DVPS

1 DUQUESNE LIGHT COMPANY i 1986 ANNUAL ENVIRONMENTAL REPORT Two transects below the BVPS were divided where samples were taken on either side of Phillis and Georgetown Islands. Each transect was selected in the field based on suitable substrate te.g., sand and/or gravel) or heated discharge (HD). Each station was identified by river navigation mile (Figure V-I-3). In May and September samples were col-lected which included a single left shore, right shore and mid-channel station. The collection and laboratory methods were identical to those used for samples from the plant. Results Results of the May Corbicula survey of Unit 1 cooling tower are presented in Table V-I-1. Densities were calculated only for live Corbicula, as densities for empty shells do not translate into potential colonizers, and such figures could be distorted by the redistribution of dead class by currents. No live Corbicula were collected in the upper reservoir; however, the presence of shells indicates that they were transported within the circulating water system. Based on the 17 Ponar grab samples taken from the lower reservoir, the estimated number of clams inhabiting this area was 70 million, of which 88% were alive. Sizes ranged from 1.0 to 26.0 mm at the widest portion of the shell. While performing the innerbay cleaning ooeration (July 1986), the divers observed clams on the downstream side of the bays close to the intake pumps of Bays A and D. Approximately one 55 gallon drum of clams was removed from each of Bays A and D. No clams were found in Bays B and C (Hammill 1986). A cut-away diagram of the intake structure is provided in Figure V-I-4. In December 1986, divers collecting silt depth data for each of the four intake bays and observed clams close to the intake pumps of Bays A and D. No clams were observed in Bays B end C. The auxiliary intake also was surveyed and divers reported clams around the intake pumps of Unit I and 2 (Rammill 1986). i The results of the Corbicula survey in the Ohio River are given in Tables V-I-2 (May) and V-I-3 (September). Dead clams were not counted in samples of the regular macroinvertebrate monitoring program. 116 w

1 DUQUESNE LIGHT COMPANY 1986 ANNUAL ENVIRONMENTAL REPORT i TABLE V-I-l i Corbicula COLLECTED IN THE COOLING TOWER MAY 19, 1986 BVPS Clams Collected Station Density Sample Location S2bstrate Alive Dead Live Clams /m' Upper Reservoir North sil 0 17 0 East A sil 0 9 0 East B sil 0 1 0 South sil 0 3 0 Lower Reservoir 1 sil 180 14 7,750 2 sil 76 3 3,272 3 sil 146 17 6,286 4 sil 262 27 11,261 5 sil 158 33 6,803 6 sil 66 29 2,842 7 sil 66 17 2,842 8 sil 23 10 990 9 sil 6 2 258 10 sil 205 33 8,826 11 sil 199 16 8,568 12 sil 217 26 9,343 13 sil 111 19 4,779 14 sil 64 1 2,756 15 sil 128 7 5,511 16 sil 32 4 1,378 17 sil 0 1 0 Substrate Codes: sil - silt I a. i 117

DUQUESNE LIGHT COMPANY ANNUAL ENVIRONMENTAL REPORT 'THREE DIMENSIONAL: CUTAWAY VIEW) l .i TRASH lk .iilllM RACK N AREA CLEANED BY 4 /' DIVING OPERATIONS N I k,i l ~ S*p, ~ 'wW TR AVELING SCR EEN ii g s B 2, A ' s,~ Md Q BAY AREA CHECKED BY DIVING OPERATIONS BAY D (TWO DIMENSIONAL: SIDE VIEW) ( TRAVELING SCREEN g !/ TRASH RACK AREA CLE ANED BY

/

DIVING OPER ATIONS pf \\ sc A /// / AREA CHECKED BY DIVING OPERATIONS FIGURE V-I-4 Corbicula MONITORING PROGRAM SAMPLING STATIONS INTAKE STRUCTURE BVPS 118

DUQUESNE LIGHT COMPANY l 1986 ANNUAL ENVIRONMENTAL REPORT ThBLE V-I-2 Corbicula COLLECTED IN THE OHIO RIVER MAY 13, 1986 BVPS Class Station Sample River Collected Density Location Mile Bank Depth Substrate Alive Dead Live Clams /m' Ohio River 33.0 R 4 sil/ san 0 1 0 M 18 gra 0 0 0 L 5 sil 0 3 0 34.5(II R 3 gra 0 0 0 M 25 bed 0 0 0 L 2 sil 0 0 L 3 sil 0 0 34.8 R 4 sil 0 9 0 M 22 gra 0 0 0 L 16 sil/ san 0 2 0 ], (Back Channel) 35.0 R 4 det/ san 0 0 0 M 19 gra 0 0 0 L (HD) 2 sil 0 0 0

35. 4 (2A)

R 5 san 0 1 0 M 18 gra 0 2 0 L 3 san 0 0 L 2 san 0 0 l (Back Channel) 35. 4 (2B) R 2 sil 0 0 M 12 gra 0 0 L 2 sil 0 0 (Back Channel) 35.7 R 4 sil/ san 0 0 0 M 13 san 0 0 0 L 2 mud / san 0 3 0 37.0(3) R (KU) 2 mud / san 0 2 0 M 21 gra 0 0 0 4 L 2 sil 0 0 L 2 sil 0 0 37.5 R 4 gra 0 0 0 M 22 gre 0 0 0 L 3 san 0 0 0 (Back Channel) 37.5 R 3 san /gra 0 1 0 M 22 san 1 1 43 L 4 det 0 1 0 i Substrate Codes: Footnotes: bed - bedrock (HD) - Heated Discharge det - detritus (1) - Transect 1 gra - gravel (2A).- Transect 2A (Main Channel) mud - mud (2B) - Transect 2B (Back Channel) san - sand (3) - Transect 3 sil - silt i 119 7-y- ._i-s ..--.-g_,y ,7-m_. ..-m-,., .-__n-- y

DUQUESNE LIGHT COMPANY 1986 AMUAL ENVIRONMENTAL REPORT MBLE V-I-3 Corbicula COLLECTED IN THE OHIO RIVER SEPTEMBER 15 & 16, 1986 BVPS Class Station Sample River Collected Density Location Mile Bank Depth Substrate Alive Dead Live Clams /m' Ohio River 33.0 R 6 san /gra 0 0 0 M 19 san /gra 15 2 646 L 2 mud 0 3 0 34.5(1) R 4 san /gra 2 7 86 M 21 bed 1 0 43 L 3 sil 2 39 L 2 sil 0 0 I 34.8 R 3 mud /gra 0 3 0 M 21 san /gra 0 0 0 L 21 mud 0 2 0 (Back Channel) 35.0 R 8 mud 1 3 43 M 24 mud 1 1 43 L (HD) 6 mud 0 0 0

35. 4 (2A) R S

san 0 4 0 M 17 bed 0 1 0 L 3 san 0 0 L 3 san 2 39 (Back Channel) 35.4 (2B) R 2 sil 1 20 M 12 gra 27 532 L 2 sil 0 0 (Br.ck Channel) 35.7 R 4 mud 0 2 0 M 13 gra 9 5 388 L 4 san 0 4 0 37.0(3) R (HD) 2 san 1 11 43 M 20 bed 0 0 0 L 3 sil 0 0 L 2 sil 0 0 t 37.5 R 3 san 2 1 86 M 24 gra/coh 1 3 43 L 3 san /gra 0 4 0 (Back Channel)37.5 R 3 cla 0 0 0 M 13 sar 1 2 43 L 4 claican 0 3 0 Substrate Codes: Footnotes: bed - bedrock (HD) - Heated Discharge cla - clay (1) - Transect 1 cob - cobble (2A) - Transact 2A (Main Channel) gra - gravel (2B) - Transect 2B (Back Channel) I mud - mud (3) - Transect 3 san - sand sil - silt 120 1

DUQUESNE LIGHT COMPANY j 1986 ANNUAL ENVIRONMENTAL REPORT The clams displayed a preference for sand and gravel dominated substra-tes. The most Corbicula were collected in the center channel area of both the main and back channel stations (September 1986). Table V-I-4 summarizes Corbicula frequency in past macroinvertebrate collections for the BVPS (1973 through 1986). Peaks in population den-sity are apparent in the years 1976 and 1981; no Corbicula were found during 1973, 1979 and 1980. Corbicula densities increased during fall collections. Data, from collections of Corbicula during impingement sampling, are presented in Table V-I-5. Peak numbers of Corbicula occured in June, August, and October; numbers gradually declined through the end of December (Figure V-I-5'). Summary and Conclusion The results of the 1986 Corbicula Monitoring Program show that no live l clams were collected from the upper reservoir of Unit 1 Cooling Tower. Since the water entering this area comes directly from the condensers, it is suspected that elevated water temperatures makes this area unsuitable for the clams. Corbicula survive in the lower reserveir with an esti-mated population of 70 million clams (88% alive). From the river survey conducted in September 1986, Corbicula inhabit the upper Ohio drainage, providing the opportunity for clams to enter BVPS. In spite of the large population of clams in the lower reservoir of Unit 1 Cooling Tower and river populations, BVPS operated normally. 1 121

DUQUESNE LIGRT COMPANY 1986 AMUAL ENVIRONMENTAL REPORT TABLE V-I-4 2 Corbicula DENSITIES (clams /m ) SUlefARIZED FROM BENTHIC MACROINVERTEBRATE COLLECTIONS 1973 THROUGH 1986 BVPS TRANSECT 1 2A 2B 3 Back Date L M R L M R Channel L M R 1973 Nov 0 0 0 0 0 0 0 0 0 0 1974 May 0 0 0 0 0 0 0 0 0 0 Jun 0 0 0 0 0 0 0 0 0 0 Jul 0 0 0 0 0 0 0 0 0 0 Aug 0 0 0 0 0 0 0 0 0 0 Sep 0 0 7 0 0 0 0 9 0 0 1975 Aug, 26 7 0 20 20 20 33 20 7 0 0 Nov, 13 0 0 0 7 46 0 7 0 198 0 1976 Feb, 24 7 0 0 0 0 0 13 0 0 0 May, 25 0 0 0 0 0 0 0 0 0 0 Aug, 18 40 20 290 99 0 53 92 0 20 0 Nov 0 0 356 13 475 20 139 7 422 13 1977 Feb, 24 0 0 7 7 53 508 7 0 7 0 May, 17 0 0 0 0 7 0 0 0 0 0 Aug, 17 0 0 0 0 86 7 13 0 172 0 Nov 13 20 59 0 46 13 46 7 145 0 1978 Feb, 15 0 13 0 0 0 132 6 6 6 32 May, 18 0 0 0 0 0 0 0 0 0 0 Aug, 9 0 0 0 6 13 0 0 0 0 0 Nov, 14&l5 25 13 0 6 403 38 32 6 19 6 1979 Mar, 22 0 0 0 0 0 0 0 0 0 0 May, 25 0 0 0 0 0 0 0 0 0 0 Aug, 1 0 0 0 0 0 0 0 0 0 0 Nov, 14 0 0 0 0 0 0 0 0 0 0 1980 Feb, 13 0 0 0 0 0 0 0 0 0 0 May, 21 0 0 0 0 Sep, 23 0 0 0 0 1981 May, 12 0 0 7 0 Sep, 22 40 90 408 99 ) 1982 May, 18 0 0 0 0 i Sep, 23 0 10 0 0 1983 May, 11 20 0 0 0 Sep, 13 59 20 251 40 1984 May, 10 0 0 7 0 Sep, 6 0 0 0 0 1985 May, 15 0 0 0 0 Sep, 19 89 0 99 40 1986 May, 13 0 0 0 0 Sep, 15&l6 20 20 184 0 (-) indicates area not sampled { 122 i

DUQUESNE LIGHT COMPANY 1986 AttiUAL ENVIROtMENTAL REPORT 1RBLE V-I-5 SIM ERY OF Corbicula COLLECTED DURING IMPINGEMENT SURVEYS FOR ONE 24-HOUR PERIOD PER WEEK, 1986 BVPS Number Collected Operating Non-Operating Date Intake Bays Intake Bays Month Dg Alive Dead Alive Dead January 3 0 0 0 1 10 0 0 0 1 17 0 0 0 2 24 0 0 1 2 31 0 2 0 1 February 7 0 0 0 0 14 0 0 0 0 21 0 0 4 13 28 0 1 3 12 March 7 0 3 1 6 14 0 0 0 6 21 0 7 0 5 28 0 0 0 1 April 4 0 0 0 2 11 0 3 0 2 18 0 6 0 1 25 0 0 0 3 May 2 0 3 0 0 9 2 5 1 1 16 0 3 0 4 23 0 4 1 5 30 1 3 0 9 June 6 13 10 3 7 13 4 8 1 4 20 4 1 2 1 27 1 5 1 15 July 4(a) ll(a) 18 2 4 0 4 25 0 2 0 0 123

DUQUESME LIGHT COMPANY 1986 ANNUAL ENVIROtMENTAL REPORT 'mBLE V-I-5 (Continued) Number Collected Operating Non-Operating Date Intake Bays Intake Bays Month Day Alive Dead Alive Dead August 1 5 25 4 19 8 0 9 0 9 15 1 5 0 1 22 2 3 0 0 29 1 5 0 4 ) September 5 2 3 0 3 12 1 5 4 5 19 4 9 0 2 26 (b) October 3 12 17 1 1 10 4 8 12 12 17 0 6 2 6 24 1 0 1 1 31 2 2 0 1 November 7 1 2 0 0 14 5 10 0 0 21 3 5 0 1 28 3 15 0 0 December 5 0 0 0 0 12 0 0 0 0 19 0 0 0 0 26 0 0 0 0 'IOTAL 74 199 42 173 (a) Impingement could not be conducted due to diving operations in screenhouse. (b) Impingement could not be conducted due to screen wash pumps out of service. l 124

DUQUESNE LIGHT COMPANY ANNUAL ENVIRONMENTAL REPORT 1 10 0 - TOTAL DEAD ALIVE I 90 - 80 - j Il 70 - -li 1 1 I\\ b 60 - f g \\ l s I \\ l\\ jg {j i u so - I- 'V \\ 7 e \\ l\\ u l \\ l \\ I Aa - \\ 'I \\l\\t.\\ \\ 1 \\ \\ i \\..l i\\ I .I g\\ l 11l\\ \\ \\ V \\ .s / ,i. \\ l,r \\ 1 l \\ \\ / \\ a r \\ 20 - I I I I \\ l \\ \\i l \\\\ / '\\ '\\ .I l \\,- lI'~~. \\\\ t - no - l \\,' \\\\ ,' 'y s,,i \\. / '..._j 8 J lF lM lAlM lJ lJ lA lS l0 lN l0 l MONTH FIGURE V-I-5 SUp9tARY OF Corbicula COLLECTED DURING IMPINGEMENT SURVEYS FOR ONE 24-HOUR PERIOD PER WEEK, 1986 BVPS 125 .w-

DUQUESNE LIGHT COMPANY 1986' ANNUAL ENVIRONMENTAL REPORT VI. TERRESTRIAL MONITORING PROGRAM A. INTRODUCTION The 1986 terrestrial ecological survey at the BVPS consisted of a program to detect vegetation stress using aerial color infrared (CIR) photography with subsequent field reconnaissance to determine the cause and extent of any stress detected by remote sensing. Vegetation stress attributed to natural causes such as disease, insect infestations, weather variations and changes in moisture regimes, and human-caused impacts can be detected by experienced photointerpreters using either true color or CIR film. Healthy vegetation reflects electromagnetic radiation in the visible green (500-600 nanometers) and invisible near infrared (700-1,000 nanometers) portions of the electromagnetic spectrum (Hilborn, 1978). The reflectance from healthy foliage is higher for radiation in the near infrared spectral range than for visible green light. Due to this differential spectral reflectance, reductions in plant vigor that result in changes in reflectivity and the rendition of foliage are more readily apparent when using film sensitive to near infrared wavelengths (Shipley, et al., 1980). The use of aerial CIR photography allows large areas of vegetation to be remotely sensed to delineate areas that exhibit stress through reduced plant vigor. Interpretation of the photographs in the l laboratory further reduces time and effort by directing field crews to i i specific locations where the causes of that stress can be determined t (Hilborn, 1978). In addition, the use of yellow filters with CIR film decreases the absorption of blue wavelengths, thus reducing the effects of haze that often obscure detail and clarity in true color photography. l 126

DUQUESNE LICHT COMPANY 1986 ANNUAL ENVIRONMENTAL REPORT B. AERIAL COLOR INFRARED PHOTOGRAPHY Obiectives The objectives of this study were to use aerial CIR imagery and ground surveys to evaluate vegetation stress in the vicinity of the BVPS cooling towers and to determine if drift from the towers is adversely affecting vegetative communities in the terrestrial ecosystem surrounding BVPS. (NUREG - 1094, Final Environmental Statement related to the operation of BVPS Unit 2, Section 5.14.1). Methods (1) Aerial Photograohv An area of 50 square miles comprising a square approximately 7.1 miles on a' side and centered on the BVPS cooling towers was photographed and ground-truthed during the 1986 Terrestrial Monitoring Program. The photomission was scheduled for the period of 1 July through 31 August, 1986 to coincide as close as possible to the dates of previous missions. This period falls within the active growing season which ensures maximum contrast between stressed and healthy vegetation. Climatic conditions and haze prevented the mission from being flown until 13 August. Cloud shadows appeared while photographing flight' line 7 on 13 August which extended the time required to fly the mission. As a conraquence, flight lines 8 through 12, 15 and a portion of flight line 7 were not completed on 13 August. Between 14 l and 25 August, there were no days suitable for finishing flight lines 7 through 12 and 15. Flight lines 8 through 12, 15 and the remaining portion of flight line 7 were flown on 26 August, 1986. i The flight conducted on 13 August was flown bet. ween 1101 and 1156 hours Eastern Standard Time, and the 26 August flight was flown between 1136 and 1218 hours Eastern Standard Time. All flight lines l 127

DUQUESNE LIGHT COMPANY 1986 ANNUAL ENVIRONMENTAL REPORT were oriented in a north-south direction. To provide stereographic coverage, the photographs were taken with a 60% overlap in line of flight and a 30% sidelap between flight lines. All lines were flown at an altitude of 2400 feet above mean ground elevation. The photomission index is shown as Figure VI-B-1. All photographs were free of cloud shadows, and processing methods and conditions were standardized throughout the project. The short time frame between the initial photomission and the completion of flight lines 7 through 12 and 15 did not pose any evaluative or ir.terpretive problems. A flight log was kept in accordance with the "Of f-Si te Environmental Monitoring Procedures Manual". The camera used was a Zeiss RMK 15/23, and the film was Kodak Aerochrome 2443. Other information in the flight log included the camera and lens serial numbers, film and lot number, filter type, altitude, and dates and times of the flight lines (see Table VI-B-1). The data from the two flight logs are provided as Exhibit VI-B-1. (2) Aerial Photograph Interpretation The photographs were scanned in the laboratory for quality of color, resolution, scale, and clarity. Obvious changes in color tone, pattern, or texture that might have indicated possible vegetation stress were delineated on acetate overlays on the photographs and transferred to a base map. Areas with the greatest potential for being affected by drif t from the cooling towers were designated for exhaustive ground truthing. Equipment used included: l l e KARCL Reflecting Projector, Keuffel and Esser Co. Mirror Stereo Viewer, Coyote Enterprises e Microscope, American Optical, Model 569 e Bausch & Lomb Reading Class Illuminated Film Viewing Table e 128

s A, 1 ^ \\ d / %( f,, ,'.a- ) kTT4,NNN~tM y J Nk. % @.}gg q g- !i , 7:t ycO M n y% R? .4 O o,:.3s: /,:,M A g eWM is yl. L,3 ' /l ( ; .,;f :. W S f c, W,,'/.c ~... C g1y3ryn.g. w w.mW. -m, ~ ~- W. xs . ev;vk'% k

h. ;m -

w&m< m gn cn 9e 4 fm%;, M%* \\ up i g ~ iR b g-W." ye p 4 4 4 h5h Q h,..hd h YDptEl ) N.AQ, m,m%e~],, +ml}w,ro s.y. --mmm% c;, C w % ,,, e / ;; u,., f < ,w g g g< M-m C b'; l @i di, w M q u'i p ,t,,s.ee p y M s m,, . o cw / wv n w a; m c. y. Q c m . g m,,. .y y ,, s m. q ~- ?E f ~$ ~; -- i.e-- .. y,f* les ~ y_ y ,-f % A l(h W Ks -) 63. m $ 3 /p.-@g* r n,3 4,J.N w,;, J .,6 W ? n. m;j E 1 m m.4 p w kJ N K. -p gM % s i.-

c

1. g,m; yk gg,.

h .M e6

• W Q,,w, g. d t c. M. F,, %,

M _i a

g p ;.A/

j.. s,; :WK h.d, i g, 4 % $p f.e w 2 4.

'f J q,, y 1.Q. 4 r.O m m. m w g '? 4 f I jA f&& $,, f. $ &-,, & Q j.h#+jhy' = 4J% - '* ' e ) w g, s 4.,J 4=e* En g h,d J bas %.J ti-d -5 E ~ n y"+ s m' 'h'f@,$1Jf) Q M y Q r Y #.g dW g a, ~In dig 1. J - S +, ~ f ~/, L. nbf .iry i k $2 P _,, M N, M MO#5 7,h W,,,4, s 6 l e,t m m m ~ ~.. ,n 4 w _g - >, -w /.w w.. e vi h -W Lp W W, q u.Q % ; f. C :; w#. c % ' T, % ' g g.c n.

&Q % d. w@le 64, n ye m m A-Q 4d @ h-. _., g? @ - h {ny'a4[a m m

w w w ,K N,g, A ^*f Q q_ G _J T _rk j o m t-d. % ~ c. m,w ~ ~ .iA NfW :gh.,7d M Ak; ~=My4.[, w ' f.,Ob/y g, q, ~ Wp u9l N.y r1 y, -- -m ~ v q/ /p e f $ m+ W;,,y ; li( Ch, n[w%.. mj f ', S y '. w-y 3,, p.. w m. .nw u_, . ~ ~ ~, ym m ,h i Y Q.);'~' ,.i ' _ '~'s & J y V' ' 4 ' l7" Q$ ' ~; y; *)p %f Q'.'"y; ny ( ' hl k N eh dkdb k' hh m m.,. m,, ~, [d k n m) I u,,m_% 7Y " 6 a w-7' - a: w,,,..,.,. m //

• W "r' rl *I{ 1\\ J -

f g p '..} ' D y),M.~~ q t N.4 W '% p;;',M,$f,,.'/.-;G.,".I,J q/ .?, 6 et [U,f [ -+ # 4 Q.3 f V f 3:. k ? .\\ #u ,,.wg ss f j s y + - dr "f ' ' O'?* S ( ,3,i e l fE %M - W'gV *.h q< 1 M.'.vgee gyq$wg g r',g.4 f j i ; N'gl4 / f f p { hf, gj t:n E S g hp 4y;p ,. y*, & w. g'p g si j gi,..,. r r' e' ' r ~ r:' -L W q g,,J '"g 2.\\,' g.m~nwa by p m-%m wqby,ggl4 ;A.jp R., W w w g. )y p g 4,,g L. g \\ ,y,,, whQw. m. y}'r ,-~ g., 4 18 1 w-m n v. m -. jff, ..-lg T Ll ; g ' i ' 1 ( l ~ ., +, s'Vj%.. m.tuy %n e. g}* V gg, u ~,% 1 ~, w (. y /e9f f ;VQW

• /

,a -j'4 &sy t n we y~ Le CADR YaMI 4,3\\%M,P1 0;,id %q }M;3/j.M~MMO ~ t /3 4wv ~ i S 3-- z w ~ . m m... ~. m. 4.k I. \\ gqq i n_ y' jff;.jggj,,g( r t ,q, g s Also AvAHaMepn qp p. f J.j

n..w. a,.. +4

,m, L +, e n, xp a caa r , n,.. ~,,,.. l 4' Eu.E - 55 5.ed 5.J I5 buJ p ,e f L.E. W bm3 ,EJ ., b J g { gg w-A i ~\\ g,z4 $ 4.;OM.Wy W-q %b;r Q Fj _.,.; _hu a ,a N L. w m .w w u. ,i, 6, w .s w_%d ,) p ,y ~.. o 7 4 M _!! a,Q,,,., . ~y Iw :.: ud.n . ~'%~ e,, - 3,)ew.,tf, m. :, M, = p -%. _.;, q-v. w# p/,A / . C o .s - . w, w m e. y, u A,., s_. ,_.,%. - :%,,.a 1 a, 3 i a,, J x f' - gg-i u u ,w a u. s a p

• '""t',

I

• 3.w

..y w w w a kd I,d- ,;, h..,i f b Q 1L.(

• 7, n[ M,.. d j j g.

1. Qq$Lyam. %,9': / \\

. y ' ;( 1 d k O, t .;c t w ~ o ='= .e. -..-v-.----..------.,-,,,~,----,,.---.--.--.-------,r.- .-r-.-.,-.v- -m,.--,--.,..-#-.

3 3- ,1 ~ ^.j. ,, 3 , g ym, - qy , ( 5, y

(-

F >g, f ' 3 g it[3t-2i((3f.\\ w ... z, lf, \\,[]IEssa s, # o 33 y iJ, ~_ [3 [],- [ 3, . c< [ ] -. E[]s-240

kla a'1

< ~ ~ ~ 'e - g c, -[] 15-059. s s,,e-[3 g.334. .' ? ;.x, [ 3 y.s.* i ',( ]. ! ' - i, t ?, t m r r i j 7 ./ p a.-,e eqQ g .?

1' s

[ 4, 3 [ ) ;- 3,.f up + ) - ~. ~

w. <

-i ~ ,y, ,,7 - 4 ?. [] ,f# -g - 5 [ ] 7-215 / ~ 3 [g 3 4-.y . p N. g ,1 *49 'v - -i O h, N{ c i-EY %4 i -Y ' ~ \\ [3 ~[] T -[] [1, h,

, S C~

'A 4,. f'[] N / fp '() "\\, [3y [] m - [31 _ i, i: .. ' f % / N . p()p g% f F n ( #,,[]s. i /. L. ~ t W. f q [).. f + .h; [3 -~ .[ 3y - b)u y b.1 s V i * ' #o su s I \\' 4 - Q4gf; i] y ' Q;% i j 4 l' 3 s r ${. ' ' f '[]! ~ ] 1 s / ~[P y, N [] [3 [] [] ,s ,c t 4 -- a [],2q t [], i %, 9 ,. \\ [ ],p, s .. [ 3 y 4 V r k i -f- -y []- [] ~ y[ ]. [] t s + s 1,<, s > ,:3 .q. : & w-s. t. nw a y'. j: s u w y.- x g_ - g .N 2 j 4 y3 7' i. s [3 __2 }. g , j ij 'hM [3-- ' ' N'A g ? (( },. YP N: "'~ e.<M 1 '\\ ' ], {u /

v x

3 s[ ]., , <a .s y -..ih [] .-[] N [] ~ []'3 92 "\\

• E l{-

. [] 1 .g ) 3 - /. N " l[3 [36-189 f / [ 34-125 - [ 3 15E"C L bN- ( I ', 'q,' ' p[. V II 7 p;?[]I3-403)(),l4-436 5 .4- 't N ' --a t Lm,/. [] s

s. x.

[] f:-i c t m:d .. a. s oi .[32-6f s r 1 - 126 - t 16-190

• r,8-25 3 4

x 0 223g gg.3,3,,U go.3i3 u,.3429:z-37z i3-4os@i4-437.E,D A .j 9-31 ' 4 0 3-9 ~, ap D s-i ss,, 7 s 01-32 / 1 g. q j ,'7;.^ y- _,. s w .f A.. T. e ~ - es.T ;p 'p1 x 3 s y 3l y' )4.m. h, _ p..,, w, 4)O, S y,J L ;y %__f.:x. yz;-{J q . (' yy x 1 ~ w, +. fg , y,_ 7.y, r r..% n.. a a e, / w e.J t L. s- ., e -s n,.,, 04 4D 4 h D LEGEND FIGURE VI-B-1 00 n Q g INDEX TO PHOTOGRAPHY Center Point Locations for Infrared Photos 2-53 BEAVER VALLEY POWER STATION Flight Line - Photograph Frame Number AND VICINITY W 14-426 Q AUGUST 13 AND 26,1986 k l 1 0 4000 8000 12000 Approximate Scale a

4 DUQUESNE LICHT COMPANY. 1986 ANNUAL ENVIRONMENTAL REPORT TABLE VI-B-1

SUMMARY

OF THE AERIAL PHOTOMISSION FLOWN IN THE VICINITY OF THE BVPS, 1986 Soecifications Camera: Zeiss RMK A 15/23 SN 119016 Lens: Zeiss Pleogon A4 SN 123614 Focal Length: 153.081 mm Magazine: 117915 Shutter Speed: 1/450 or 1/300 (See Flight Reports)

f. Stop:

4.0 or 5.6 (See Flight Reports) 4 Filter: Minus Blue D 119111 Film Type: Kodak Aerochrome 2443 Film Lot Number: 2443-304-26 Scale: (1" = 400') Photomissions Date: August 13, 1986 Time: 1101 - 1156 Eastern Standard Time i Date: August 26, 1986 Time: 1136 - 1218 Eastern Standard Time- } Altitude: 2400 feet above mean ground level for all. Lines Weather: Hot, clear, haze-visibility 10 miles j (both dates) Time Lines were flown: 1 Line Start EM i 8-13-86 i 1 1101 hrs. 1103 hrs. 2 1110 1113 3 1115 1118 4 1119 1122 5 1127 1130 6 1132 1135 1 7(Partial) 1142 1144 13 1153 1156 14 1146 1150 8-26-86 7 (Partial) 1217 1218 8 1205 1209 l 9 1154 1203 10 1149 1152 11 1144 1146 12 1140 1142 15 1136 1138 1 imes shown are for exposures utilized in this study T l 130

b DUQUESNE LICHT COMPANY 1986 ANNUAL ENVIRONMENTAL REPORT s a N EXHIBIT VI-B-1 l R.M KEDDAL AND ASSOCIATES, INC. FLIGHT REPORT i i CREW: RMK (Pilot)/CWP (Ocerator) DATE: 8-13-86 ROLL #: 1 j Film Type: 2443 Weather: Q Altitude: 2.400 Shutter Speed: If41Q

f. Stop:

4 Filter: Minus Blue D 119111 J Camera: 119016 Magazine: 117915 Lens: 123614 CFL: 153.081 Job: DLCo Location: Beaver County. PA 4 I i EXPOSURES 1 I LINE DIR SHOT QS.EQ PHOTO NO. REMARKS E 000-005 Test l 1 S 006-037 006-037 1-32 2 N 038-066 038-066 33-61 3 S 067-099 067-099 62-94 i 4 N 100-132 100-131 95-126 l 5 S 133-165 133-164 127-158 i 6 N 166-198 166-197 159-190 t l 7 S 199-232 214-232 205-223 Clouds from I stacks l 14 N 233-266 234-265 406-438 13 S 267-299 267-299 373-405 300-304 Test i i l 131

DUQUESNE LICHT COMPANY 1986 ANNUAL ENVIRONMENTAL REPORT EXHIBIT VI-B-1 (continued) R.M KEDDAL AND ASSOCIATES, INC. FLICHT REPORT CREW: RMK (Pilot)/CWP (Operator) DATE: 8/26/86 ROLL #: 1 Film Type: 2443 Weather: 0 Altitude: 2.400 Shutter Speed: 1/300

f. Stop:

56 Filter: Minus Blue D 119111 2 Camera: 119016 Magazine: 117915 Lens: 123614 CFL: 153.081 Job: DLCo Location: Beaver County. PA EXPOSURES LINE DIR SHOT USED PHOTO NO. REMARKS 000-002 Test 15 N 003-033 003-031 439-467 12 S 034-064 034-063 343-372 11 N 065-093 065-093 314-342 10 S 094-123 094-123 284-313 9 N 124-150 124-148 259-283 151-155 Test 9 N 156-162 156-160 254-258 8 S 163-193 163-192 224-253 7 N 194-207 Out of film 208-211 Test 7 N 212-231 217-230 191-204 232-233 Test 132

t l l DUQUESNE LIGHT COMPANY 1986 ANNUAL ENVIRONMENTAL REPORT (3) Field Reconnaissance f Field surveys and observations of the BVPS and vicinity were conducted the weeks of 19 and 26 October to verify the photointerpreted results that had indicated areas of stressed vegetation. A total of 8 person 4 l days of effort were devoted to the field survey. The 9" x 9" CIR prints were used in conjunc. 'on with the photoindex (Figure VI-B-1) j and standard USGS 7.5-minute topographic maps to construct preliminary. j base maps and to locate areas suspected of containing stressed vegetation. Where possible, vegetation was closely examined to determine the cause of stress. Where areas to be surveyed were inaccessible due to terrain difficulties or private property, binoculars were used to aid characterization. During the field survey, the location, extent, and severity of stressed areas were j documented. l 1 l (4) Venetation Macoinn i f A final map indicating the location and distribution of vegetation f stress was constructed from the base maps and results of the field survey (Figure VI-B-2). This map can be compared with similar maps 1 from previous BVPS vegetation monitoring results to note trends in l type, location, and extent of vegetation stress. v l 1 Results t 1 J j The 1986 photographs were slightly overexposed as compared to the j results of the 1984 photographs which were somewhat underexposed. Color saturation was generally good on all frames although the slight 1 overexposure on some frames made interpretation of the color rendition of the foliage less than exact. In these instances, it was necessary I 4 to use the original film for precise interpretations. Since all the i { 1986 photos were taken in the late morning-early afternoon, there were no problems experienced with shadowing due to the lower angle of the i J 133 9 w w. wy-. var,- ---v,-- ,-v.-- ..-i.--r.-,-wy-m. ,,m-w-- wi,+, ..w-,.ce,---s -,ww. --..,m-wyyww, ,.w,--w,,,o---_r-4 w

---w w a.,,h

a.. - -- - _ - - - - _..

a.h-___i.m__s. A m---.,-s- .._.-..s w.- = - -. L -w --..-m.__ m u A. p. i / i Es* E N tc C 7 h }; O N fg,) A p..reis .4 m sn [- r, cek/ % 1 '! ~~% %, ' % ' \\ f, Nl W, f.g,[,p. f< ' 'C w t \\' '.' f .Jf O.. T- 1; i'q }.")f ,k'. % 4lY4 $/ 4;Ly.ds,%$k.,y - 1\\ fx 0q \\

en. 4 -

a% t - 1.f - 1 y= 4

f(4 a

r e ms.. gj. y r,,;; J x. i W,. gy;. g g; W M-j 73.

g. 9. gyN,' ; w, k

4 q ~ ~%. v c . 41 c. x g ' ly s .y

~

y 3 p:g:zu,r Ju Lf-la g"+ Y f ,';;]h j ! ~~ &*f* a,wn'*? m.,a oyag, j, p-R .c n. ,,g,ggps 9+ g\\ [' n%M 9.c i a - m ,c7 ny g yx n a y-N M [y [ g '[f M d 3 Q"m 'oh r u "4, ]GMI 9 ~ ? l Ab # -e E4-h !4 T +,3 g j ^'*

m.-[*M%E v w$M'4 \\

] /A"QM.m [,,,y n a! s+w y - ; .Q,., ' s w .e Ls w. .? .,n,,y w+, /,4-a m % n. sT u s *j.d, o r.%gA/B h - d v p ; 4 x g@ k' 1, '.zf E p-.g+~ ',; %p~ 1 w~v qw n. ~ e bsf, / \\ se .g & g Wuo %shM*4^~i l A/B 5 Ap gs Ato m g y. us/s N,,, 2 c N 7 gjf r aa.4 w '.gW '.y r ; a,un wW g =Nm.x g m f.\\ my' f. k ik 1 ,m _- <,, p_ ue. Q.~a_nw.,x..- a sp wy w L 'n~ ~ ~ y. p wn~dumm. ua.uWg.A a w y, h w w.m: ? g r~ w m: n) m x mn w ma w .j; fj

• h f;

l

• , q w ;,y % q ~n y f y ~ +~j.

o e&A%{:f %;f w g, e m.e e a. w w maa m m; g\\ 8x. QF 3 sq.y g^;_ g.' Ay ,s om -mw m. Q"vl,./. 9,'3, d. j ? U 3 ; /g & y > .cy 7 ~ i'{&. h -~.:.;%

1. m ~ "o}, 'A)a *'p~ - 4*

QW&l \\ Q @ W $Af s' ^ Q < g 1 i c t u s 1 s g%Q d Qy LR g ffj % c:r Q<a gg'}gg@p#M$;eg.e pq Di Q,, g; i N ll f p, ;,sar,m&,%g e que qqq p g .? w gi ,1 L@%pl Fig;% lG._g,s~. R,Z t y

4,J @+Q f ~) W Y y..@,, e#~~ 2 % Q q;

Tumb exYdia# s=uf s 'b Wu dWi 4= w d A mA T.,4 p %g; M <m sm o t 3., j ,A #9 x..9, - 3 Y " n WMM $ i h_%ja , JQ%sW,_t1:, ' p>& %W m fp:.. IA,ef,', > , m.g-s.. y e eA s m. Cgju,q 'f r, n,.qk.p,(,c 6,1m p q/g ; '.: fg.j . m9g :3a ; - ;f 4 A p; fr. v a =X i N. - y. g a

c. 3 g

a# 3, g p ;g u/ A cpp u s.,;.u

y. ;-.Eg4

%,,p,.;,,,,.. r.,, y. .:%w,y%..-.- p _- mw e3 g u_ /,_.. p>_.s f, ('s m, y 4,s_ __73,, ? 3, *..- 8 %jg-r/,, 4 Tg .Mg - 3 z,N _. y c.% jw,'pe ,m Ai . ?' _V %~ j, ' % ~_ k; i 7g 'o e ,,, w"NgN o

y8x

l 4e

• p r'

w, e. w ; y c y w[p t 1 %, sja = y;SQ: Qi \\ % .u,y u,r gp E, sp 4.'M. k,'"w % j w sat w,,,3 , -. wr, y x ym g u k ((f ~$ x}, } ,] [ / y _u 1 gu,. m.. y.. p 2(8ly? ~'j + -c,. ~ w; ~,, .u.,,A - ,c.. : < a p n ,r.- .~ s t. ,a

d..

an . g + n W b,& m y? ? Q j% l

n.

p g3 e j~ JN p,,,. f. ' Q 2 g {A. m d;&~ L, m,

1. ~'

%Q s.. Laet xR. v ~(, .,,K E - a L 4 M M }F L " L v g 4 u% V'%. M b M 2tf MWMM as t.

?', - +:. ./ E' + ht :$ .;%^'8fE . f -_. j' ,..v ' yA/s/Ly.,%,,#il us!. % s, @s ,, ~ m - fus/t y g;g_ 5.. i...,, 4 _.l g. 4 y g_ .,a gg l 3 5 s._,r,.-; %+5,- g g l r y pg.. 3 i. .y ? ^ _ Q. % , a.7 - -

• N,7 %

. y f t s 6 K <..O'- g K ^ b[ l p.'- E p '. M aN}d I /- d j / L p } q(.' ,,,ft r [Mg g, f () A/ oi, jvu s s - A/s/E. g gg ; - ~ ) f, sfy r ".g(%g / m, <

i. '

g^ E} % h7- 'A. '" L oga : s,%.-- g,., s.g y,, ~ i gu - - - - JF~^'8~ \\ (S 'y?p~ t 1" q '3 e w I s us A - A/er 3

• /

L/A. a. ;[ g ) } l g,.?f. ~y j - y 2 % ?.,. QQ } ^-~(L,Wuert. G' .ly*~ Ka s K { A. 'A' '~aN,. '#\\ s' S. 1r .W-- .-l"8 'M. 1 1 Lg

1. , ?,.

gs N-e (g . gN a ~ i A/e/L j a f 'N b-Q M c '. .WOL.- espa\\ \\ ^ 1:E s- /' A A Qsp K . J' jr Q,[}t h;g (A,4 ; 4 u }. A 5 I' /P ( ")$g"f ) 'y 8 - ~ i s g,- a-j g a/s !; Q, j hG .y jj _ - 'j' fc 'J j \\ ,d. g< ; ( 7 f nie f, m &*%^ g .i \\ K 0 , u .t f - J,f. N< gL Asn _ ggg_AwJ' y - ,-

• y'. -- ep pt/

fsfx'?g(7;_7,5,. ~,. x; T[ I y-l' Ry-M %. Q.. s3 P' ~ - c- - - c,'ef. e 2,f 7" L Og N.y / '1.h. .D J \\c.' '7 , f. l / jus ,\\ N r, - (Li ^ y,,f,, 7 t .t-v'~ h ,q,.n n, jf;4 Qy 3 y j \\,s g j-jx a j M,d! A- ' " y' p s 7 .3 _fj' i ? -/ 3 ' 3-;, y--- : h g.+.: : a,/1..g. - --Q-f f c~q ; 7,, qQ :':[ q; j i. s 3 ;;[- ~~ ? xID i LEGEND FIGURE VI-B-2

00 A FALL WEBFORM H HEAVY EQUIPMENT ACTIVITY DISTRIBUTION OF VEGETATION STRESS lg B LOCUST LEAF MINER I EROSION N

IN THE VICINITY OF THE BEAVER VALLEY C DUTCH ELM DISEASE J UTILITY CORRIDOR MAINTENANCE POWER STATION,1986 1 D DEAD / DECADENT / THIN CROWNED TREES K LOGGING ACTIVITY E POOR DRAINAGE / PERIODICALLY FLOODED L OVERGROWN WOODLOT f 1 F NECROSIS M WILDFIRE 0 4000 8000 12000 Approximate Scale G UNIDENTIFIED DISTURBANCE i I l' i 2,

DUQUESNE LIGHT COMPANY 1 1986 ANNUAL ENVIRONMENTAL REPORT i d i sun and hilly terrain that occurred on some of the 1984 photos that were taken later in the afternoon. The slight overexpo rare on the i 1986 photographs were the result of the slower s hut ter ' *s peed s used which were based on the discretion of the photographer. ' In general, l these effects were minor and did not alter the ability to accurately detect areas of stressed vegetation on the 1986 photographs and permit { precise comparisons of the same areas on the 1986 and 1984 photos. i As shown on Figure VI-B-2, a number of areas contained significantly stressed vegetation. These areas are identified by letters on the map j with each letter designating a particular stress type. Primary causal factors of identified stress included insect induced stress, disease, decadence, poor drainage, overcrowding, erosion, logging activity, construction activity, herbicide kill and wildfire. Due to the j inaccessibility of many areas where vegetation stress was detected, the causal factor had to be labelled as unidentified unleas the cause 4 of the stress could be accurately discerned from the photographs-for example, logging or construction activity. The mosaic pattern of the stressed areas delineated throughout the study area, along with the high variability of any of the listed causal factors occurring at a particular loci where stress agents were determined by field reconnaissance infers that those areas labelled as an unidentified disturbance have a high probability of following the general trend. Twelve major stress types distributed over 360 individual areas were ) identified Msed on the field reconnaissance of 303 of these areas. A ) number of the areas contained more than one of the identified stress causal agents, thus, the total number of occurrences of the stress types identified was 510. These areas ranged in size from small clumps of trees less than an acre in extent to relatively large blocks of woodland. Numerous individual and small stands of trees were I stressed throughout the area under investigation, but only larger, severely stressed groupings were delineated and visited in the field. Most of the areas of stressed vegetation delineated on the base map 135

DUQUESNE LIGHT COMPANY 1986 ANNUAL ENVIRONMENTAL REPORT that were identified as insect induced stress had many smaller areas in close proximity that revealed significant stress due to the same causal agent. These areas, because of their ubiquity, were not mapped for the sake of clarity of the base map. Natural Causes of the 510 occurrences of significant stress, 289 (56.67%) of the occurrences were determined to be the direct result of natural causes (Table VI-B-2). These were divided into four categories discussed below: fall webworm, locust leaf miner, decadence (overage-overmature), and disease-the letters in parentheses correspond to the map identification symbols. The fourth category of natural stress causal agents, Dutch Elm Disease, which was identified in this monitoring program prior to 1984 was not specifically identified in 1984 or during this program. This fungal disease has had catastrophic effects on the American elm (Ulmus americana) in the entire northeast, and no additional areas of newly infected elm trees were identified during the 1986 program. The slippery elm (Ulmus rubra), which is still common in the monitored area, and some introduced elms are less susceptible to this disease. Fall Webworm (A) One hundred seventy-one areas contained trees severely stressed by a combination of the Eastern tent caterpillar (Malacosoma americanum), cherry lace bug (Corythucha oruni), fall webworm (Hvehantria cunea), and to a lesser extent the periodical cicada (Manicicada seotendecim). The term Fall Webworm has been retained to provide consistency with the results of the previous studies. The affected areas are uniformly distributed throughout the study area and are especially prominent in sections of the study area where intensive land use has promoted secondary plant community succession where the woodlands contain dominant numbers of the preferred host tree species of these insects. 136

i DUQUESNE LfCHT COMPANY 1986 ANNUAL ENVIRONMENTAL REPORT l 1 TABLE VI-B-2 i TYPE AND FREQUENCY OF VECETATION STRESS IN THE VICINITY OF BVPS, TERRESTRIAL MONITORING PROGRAM, 1986 1 5 i C,ggg Venetation Stress h Occurrence Percent A Fall Webworm Natural 171 33.53 8 Locust Leaf Miner Natural 102 20.00 C Dutch Elm Disease Natural 0 0.00 D Dead / Decadent / Natural / Unknown 16 3.14 Thin-Crowned Trees E Poor Drainage / Human / Natural 12 2.35 i Periodically Flooded F Necrosis Unknown 3 0.58 C Unidentified Disturbance Unknown 57 11.18 H Heavy Equipment Activity Human 16 3.14 1 I Erosion Human 6 1.18 } J Utility Corridor Human 8 1.57 { Maintenance K Logging Activity Human 49 9.61 L Overgrown Woodlot Natural / Human 66 12.94 M Wildfire Human / Natural 4 0.78 j 510 100.00 } Note: Refer to Figure VI-B-2. I 1 i a i l l I 137 i i l ,-._-,...,_..,_v,__.,-.

DUQUESNE LIGHT COMPANY 1986 ANNUAL ENVIRONMENTAL REPORT The Eastern tent caterpillar (L americanum) is a late spring defoliator that has caused high levels of stress in wild cherries (Prunus serotina and L virginiana) throughout the study area. Outbreaks are cyclic and recur at 8-to 10 year intervals. The most recent outbreak of this pest reached its pinnacle in 1985 with lesser although heavy infestations recurring in 1986. The adult moths emerge from their cocoons in early summer and deposit their eggs in bands around small twigs of host trees. The egg masses overwinter, and the caterpillars emerge in early spring when the buds of the host tree are opening. Catc yillars from one or more egg masses, after a short feeding period, spin the characteristic, unsightly silken tents in the crotches of tree branches where they seek refuge as they continue to feed and grow. During heavy infestations, mature trees can lose all their leaves which seriously weakens them due to the increased energy required to grow new leaves after the caterpillars 6-to 8-week feeding period. Although acute evidence of stress related to this pest was not readily discernible during the field reconnaissance phase except for the observation of numerous dirty, shredded silken tents containing cast letval skins, the yearly heavy infestations of this insect over the past few years has severely stressed wild cherries and other hardwood species in the study area. There are at least 15 species of lace bugs (Corythucha spp.) that feed on deciduous trees and shrubs in the eastern United States. Most have very specific host tree preferences that include wild cherries (Prunus spp.), sycamore (Platanus occidentalis), oaks (Quercus spp.), basswood (Tilia americana), hackberry (Celtis occidentalis), hawthorns (Crataenus spp.), and poplars (Pooulus spp.) which are all common specien in the study area. I Lace. bugs are whitish, sucking insects with broad gauze-like or lace-like wing covers. They live and feed on the underside of leaves often leaving them speckled with eggs, excrement, and the cast skins of 138

.=. i DUQUESNE LICHT COMPANY 1986 ANNUAL ENVIRONMENTAL REPORT developing nymphs. With sucking mouthparts, they pierce the epidermis and withdraw fluids and cell contents causing the characteristic a chlorotic flecks which are visible on the upper side of the leaf. Lace bugs overwinter in either the adult or egg stage. They emerge about the time leaves begin to develop in the spring. This insect has two generations per year, and by the end of August all stages may be found feeding together. The leaves of heavily infested trees may appear whitened, brownish or dead and fall, once little or no food-manufacturing tissues are left. The cherry lace bug (Corythucha pruni) was found to be infesting numerous wild cherries in the study area, and this insect appears - to be increasing in numbers. In all sections of the study area where the i dominant wild cherries are particularly abundant, some degree of stress can be detected from the synergistic effect of this insect and the Eastern tent caterpillar ( L americanum). Johnson and Lyon (1976) and the USDA Forest Service (1979) indicate that the fall webworm (Hvchantria cunea) is known to attack over 100 tree species. In the vicinity of the BVPS during the 1984 monitoring program, fall webworm damage was most extensive in wild cherries (L serotina and P. virainiana), hickories (Carya spp.) and to a lesser l extent elms (Ulmus spp.), black locust (Robinia pseudoacacia), ashes l (Fraxinus spp.), and willows (Salix spp.). Field reconnaissance i during the 1986 monitoring program revealed minor infestations of this i insect in the study area. Apparently, the high population encountered in 1984 was in a peak year of this insect's population cycle in the i study area. The fall webworm is a small white moth that deposits its egg masses in the spring. The emerging larvae pass through as many as 11 instars in which they spin silken webs over foliage on the ends of branches, skeletonizing the leaves as they feed (Borror and White, 1970; USDA Forest Service, 1979). Defoliation takes place late in the growing l 139

DUQUESNE LIGHT COMPANY 1986 ANNUAL ENVIRONMENTAL REPORT season, and damage is of minor importance except from an esthetic standpoint. In 1985, Brood VIII of the periodical cicada (Magicicada sentendecim) appeared as expected in the study area. During field reconnaissacce of the stressed areas interpreted from the aerial photos, limited damage remaining from the previous year's cicada attack was observed on oaks (Quercus spp.), dogwoods (Cornus spp.), and yellow poplar (Liriodendron tutioifera). The adult female causes the damage by using her sawlike ovipositor to lay eggs in pockets in the bark of branches during April and May. Branches slit by ovipositors will frequently have leaves that will wilt and die, and many damaged branches will break off and drop to the ground. When the eggs hatch, the nymphs fall and enter the ground where they feed on the roots of many plants. When the nymphs are full grown, they emerge from the ground, climb on some elevated object, and molt to become adults. Each generation requires 13 to 17 years. For the purposes of this study, only areas of heaviest infestation of these above-described insects are delineated on the mapping of stressed areas. Due to the dominance of their preferred host tree species throughout the entire study area, all wooded areas exhibited et least minor infestations of one nr more of these insects. Locust Leaf Miner (B) In comparison to the 1984 vegetation stress survey, the occurrence of locust leaf miner (Odontota dorsalis) has remained stable. This is typical of the cyclic outbreaks that commonly occur in western Pcnnsylvania. In addition to the leaf miner, another major cause of stress in the locust trees of the study region is attributable to infestations of the locust borer (MegaCYllene robiniae). The term Locust Leaf Miner has been retained to provide consistency with the l previous vegetation stress studies. A total of 102 separate stressed j l 140

DUQUESNE LICHT COMPANY 1986 ANNUAL ENVIRONMENTAL REPORT areas were identified as being related to a combination of these two insects. This represents 20.00% of the total occurrences of stress identified. The locust leaf miner is a beetle approximately 6 mm long that hibernates through the winter. In the spring, the adults emerge and begin to feed on the developing foliage of black locust (Robinia pseudoacacia), dogwood (Cornus spp.), elm (Ulmus spp.), oak (Quercus spp.), American beech (Fagus grandifolia), cherry (Prunus spp.), wisteria (Wisteria spp.), and hawthorn (Crataegus spp.). Eggs are laid on the underside of black locust leaves, and after hatching, the larvae eat into the inner layer of leaf tissue, forming a mine. When stands of black locust are infested, they appear brownish as though dead, but late summer defoliation is usually not harmful (Hepting, 1971). Outbreaks of locust leaf miner occur yearly in western Pennsylvania, and tens of thousands of acres are defoliated (Baker, 1972). The locust borer is a serious pest wherever black locust occurs. Young larvae of this 3/4-inch beetle overwinter in bark cells, become active in the spring, and work (bore) their way into the sapwood and heartwood. Extensive tunneling takes place until mid-summer when the larvae pupate. Signs of attack include swelling and sap stains on trunks and branches. Trees are often badly disfigured, and young stands can be entirely destroyed. This results in reduced growth and vigor, and the trees are mora susceptible to wind damage (USDA, 1979; Pirone, 1970). Black locust trees are a dominant species in the study area being a primary invader or volunteer species on lands disturbed by mining, logging, and abandoned agricultural fields. These trees are often planted in areas for conservation purposes once other trees have been j removed because they thrive in direct sunlight and help improve poor 1 141

( t DUQUESNE LIGHT COMPANY 1986 ANNUAL ENVIRONMENTAL REPORT l soils through nitrogen-fixation. Cyclic increases and decreases in locust leaf miner and locust borer are common. Dutch Elm Disease (C) 1 Dutch elm disease, caused by a fungus (Ceratocystis ulmi) carried by the native elmbark beetle (Hylurnooinus rufices) and the European elm-bark beetle (Scolytus multistratus), was not observed in any locations large enough to map as was the case during the 1984 monitoring program. Individual and small clumps of dead elms (presumably due to Dutch elm disease) were observed in a very few scattered areas during the field surveys. Oak wilt, which is caused by the fungus Ceratoevstis fanacearum was detected in several localities throughout the study area. These areas were too small to map, and those areas verified in the field usually 1 involved less than five trees. All oaks (Quercus spp.) are 3 susceptible to this fungus, but red oaks are more susceptible than white oaks and may die within a month af ter infection. Oaks along ridge tops seem to be more prone to contract the fungus. This fungus invades and plugs the water conducting system of the tree. The leaves wilt, turn bronze colored, and then fall. Premature shedding of i foliage is an outwardly visible diagnostic symptom of oak wilt. i l This disease is responsible for severe losses in oak forests in J neighboring Allegheny County. The spread of this disease should be ) closely monitored during future ecological monitoring programs in the vicinity of the BVPS. Dead / Decadent / Thin Crowned Trees (D) Stress attributed to decadent (overmature or overage) conditions was observed in a total of 16 locations. This represents about 3.14% of the total occurrences of stress identified. The loss of vigor due to 142

DUQUESNE LIGHT COMPANY 1986 ANNUAL ENVIRONMENTAL REPORT 1 i senescence in short-lived tree species, and the inability to tolerate changing conditions associated with plant community succession may have led to eventual death or to premature death from insect infestations or disease outbreaks in many of these areas. Many of these areas were located on steep slopes where the soils are-i relatively thin, and the reduced availability of water and nutrients [ create a harsher environment than on the plateaus and bottomlands in the study area. The reasons for decline in the number of areas mapped with this type of stress relate to the size of the areas mapped and to a j the increase in understory growth that occurs when mature, canopy f trees die. _ Combination of Naturst Causes and Human Activities Eighty-two of the 510 (16.07%) occurrences of vegetation stress noted during the 1986 monitoring program were attributed to a combination of natural causes and human activities. These consisted of poor drainage / periodically flooded areas, overgrown woodlots, and wildfire. i i Poor Drainaae/ Periodically Flooded (E) i Evidence of stress caused by poor drainage or periodic flooding occurred in a total of 12 locations. This represents about 2.35% of the total occurrences of stress identified. Many of the areas were too small to map and were located along drainage courses and at lower elevations. According to Levitt (1972) excess water is not a stress in itself. Flooding does give rise to stresses involving turgor pressure, oxygen-deficiency, and tertiary ionic stress from buildups i i of phytotoxic levels of manganous and ferrous ions. Vegetation t i stressed in this manner may become more susceptible to secondary stress from insect and disease attacks (Treshow, 1975). Most of the areas mapped with this type of stress for the 1986 monitoring program were areas where manmade alterations in drainage l 143

4 DUQUESNE LIGHT COMPANY j 1986 ANNUAL ENVIRONMENTAL REPORT i patterns flooded areas where trees not adapted to hydric conditions were severely stressed. These alterations include pond or Lake construction, stream impedance due to road-widening or construction, 4 and rapid runoff due to mining, logging or general construction activity. The study area has very few wetlands, and the wooded areas along ^ drainage courses and in naturally flooded areas are dominated by palustral forest species that are adapted to the hydric conditions such as black willow (Salix nigra), sycamore (Platanus occidentalis), green ash (Fraxinus oennsylvanica), and red maple (Acer rubrum). i Overarown Woodlot (L) 1 Overgrown woodlots result from natural forces that govern secondary 1 l plant succession on severely perturbed areas whose normal climax plant f community has been disrupted through human activities such as abandonment of agriculture, logging, mining and other intensive land l uses and by natural calamities such as massive storci damage (windthrow), wildfires, and severe insect and disease infestations. Overgrown woodlots are usually composed of hardy, pioneering tree species whose rapid growth and ability to tolerate less than favorable soil conditions allow these species to become quickly established (in these areas. The fact that many of these species can reproduce j asexually through cloning usually accelerates overcrowded conditions. i Stress attributed to intra-and/or interspecific competition due to overcrowding and poor soil conditions was observed in a total of 66 locations. This represents 12.94% of the total occurrences of stress identified. The majority of these areas were situated on abandoned crop and pastureland in the study area. The majority of these areas received intensive agricultural usage for many years causing cumulative soil loss through erosion and severe depletion of available l nutrients in the remaining soll. Tree species with the adaptability 144

A 4 DUQUESNE LIGHT COMPANY 1986 ANNUAL ENVIRONMENTAL REPORT ? to exploit these type of areas in the vicinity of BVPS. include wild I cherries (Prunus spp.), black locust (Robinia oseudoacacia), hawthorns (Crataemus spp.), sumacs (R,h, uj spp.), poplars (Populus spp.), maples h (As.gr spp.), and Eastern white pine (Pigg,g strobus). Stress induced by competition in overcrowded conditions also promotes secondary stress agents such as insect infestations and disease. l Wildfire (M) Acute stress attributed to recent wildfires was noted in 4 locations during the 1986 monitoring program. This represented only 0.78% of j the total occurrences of stress identified. In one ares along the Ohio River in Industry Borough, a large tract of woodland has burned j intensely in the summers of 1985 and 1986. Large numbers of dead and i damaged trees were noted on the photographs and observed in the field j in this area. ) i Wildfires occur naturally only during times of extremely dry i l conditions. Most wildfires that have occurred in the study area are t the result of arson, accidents, or prescribed burning. In some areas + j where the establishment of trees is suppressed due to depleted soils, )i overgrazing and utility corridor maintenance, stands of broomsedge bluestem (Androconon virainicus) have become established. This native ' grass, also known as " poverty grass", is extremely warm-season tolerant of poor soils and seasonal burning and is maintained by fire. i Stands of this grass are of ten the targets of arsonists or careless j rubbish burners, and large areas are burned annually, further j suppressing trees and stressing adjacent woodlands in the study area. 1 I l Human Activities } Seventy-nine of 510 (15.50%) occurrences of stress noted during the i 1986 monitoring progract were attributed directly to human activities. 145

DUQUESNE LICHT COMPANY 1986 ANNUAL ENVIRONMENTAL REPORT These consisted of logging, heavy equipment or general construction activity, utility corridor maintenance, and induced crosion. Loaminz Activity (K) Forty-nine logging sites were identified during the 1986 survey. This accounts for 9.61% of the total occurrences (.f stress investigated and is a marked increase over the 1984 survey (16 sites). Logging activity as a whole continues to increase in Beaver County with many of the sites investigated involving large operations covering many acres of woodlands. In addition to the sites mapped, numerous areas too small to map that were cleared or heavily thinned by firewood cutting activity were also noted. This activity could be expected to increase due (. o the increasing popularity of wood-burning stoves and fireplaces in private homes in Beaver County. Heavy Eauiement Activity ( H_}, Activities using heavy equipment resulted in the stress or removal of vegetation in 16 locations. Areas identified in the 1984 study (9) included in the 1986 study if no expansion of these sites was l were not evident. No increase in mining activity, except for a site to the southweat of the BVPS, was noted in the 1986 survey. One relatively l large area situated on the Ohio River at Ohioview is continuing to be developed as a dredging spoil disposal area. Another area across the Ohio River from the Ohioview site has also been enlarged since the 1984 survey. Utility Corridor Maintenance (J) Use of herbicides to maintain utility corridors occurred in 8 locations. Considerable stress on roadside vegetation was detected in many locations not conducive to mapping as a result of commercial tree cutting services maintaining overhead utility lines. 146

DUQUESNE LIGHT COMPANY 1986 ANNUAL ENVIRONMENTAL REPORT Erosion (I) Stress attributed to erosion is occurring at 6 locations directly south of the BVPS. The erosion at all of the sites is the result of runoff from mining spoil. These areas are all relatively small in extent. Unidentified or Unknown Causes The causes of vegetation stress could not be identified in 60 of the 360 stressed areas mapped. This accounts for 11.76% of the total occurrences of stress identified during the study. This was due to a combination of factors including inaccessibility, budget limitations, and inability to adequately ascertain the cause or causes of stress in some instances. Necrosis (F) l Evidence of coniferous necrosis was observed in 3 locations. Possible causal factors included overcrowding, airborne SO2 and ozone, and/or spray or runoff containing road de-icing salts. Conifers are highly susceptible to overcrowding and pollutants (Jacobson and Hill, 1970; Moxley and Davidson, 1973; Mudd and Kozlowski, 1975). The high probability that these areas were stressed due to a combination of these factors (Treshow, 1975) resulted in categorizing the cause of coniferous necrosis as unknown. Unidentitied Disturbance (C) The cause(s) of stress could not be accurately identified in 57 of the 360 areas where stress was detected. This accounts for 11.18% of the total occurrences of stressed vegetation investigated. However, due to their random distribution and variable sizes, it is most linely 147

DUQUESNE LIGHT COMPANY 1986 ANNUAL ENVIR0h;1 ENTAL REPORT that the majority of the stressed areas were the result of insect infestations, particularly Eastern tent caterpillar and locust leaf miner, and overgrown woodlots. Summary and Conclusions During the summer and fall of 1986, vegetation stress was monitored in the vicinity of the Beaver Valley Power Station cooling towers as part of a Terrestrial Monitoring Program. Color infrared aerial photo-graphy, photointerpretation of the imagery, and field observations were used to detect stressed or damaged vegetation and to determine probable causes. Evidence from the aerial photography and field surveys revealed that the majority of occurrences of vegetation stress were directly due to natural causes or a combination of natural causes and human activities involving intensive land use. These factors included insect infestation (Eastern tent catepillar/ fall webworm / cherry lace bug and locust leaf miner / locust borer), decadence (overaga-osermature), overgrown woodlot, poor drainage / periodically flooded areas, and wildfire. Human activities resulting in vegetation damage or stress included logging, heavy equipment or construction activity, utility corridor maintenance, and erosion. Many areas of unidentified stress were also delineated (most of which are most likely the result of insect infestations). Of the 510 identified and delineated occurrence of vegetative stress, over 56% were directly attributable to natural causal factors. Approximately 16% of the occurrences were caused by a combination of natural factors and human activities involving land use changes, drainage alterations and fire. Twelve percent of the occurrences of stress were categorized as unknown; the majority of these can be assumed to be due to natural causes. Less than 16% of the occurrences are directly attributable solely to human activities. 148 _____--__m______--_

DUQUESNE LIGHT COMPANY 1986 ANNUAL ENVIRONMENTAL REPORT Based on interpretation of the CIR aerial photography and field verification, there is no evidence to suggest that the BVPS cooling towers are causing vegetation stress. A combination of drift from the BVPS and Bruce Mansfield cooling towers, regional stack emissions, air pollution from other sources such as automobiles, and the local climate may contribute to vegetation stress in the region. The uncertainties of such combinations and resultant synergistic effects would make it difficult to measure the actual contribution of the BVPS cooling tower drift to these effects. It is also possible that the BVPS cooling towers are subtly affecting local microclimatic systems with their input of moisture and heat. ~ Damaged vegetation from winter ice buildup would be a diagnostic measure of this effect, but there was not evidence of heavy limb fall or structural damage in the photographs or field observations. Enhanced conditions for the propagation of insects or disease organisms is another possible result of microclimatic modification, but the study of such phenomena was beyond the scope of this program. i 149

DUQUESNE LYGHT COMPANY 1986 ANNUAL ENVIRONMENTAL REPORT VII. REFERENCES

Baker, W.

L., 1972. Eastern forest insects. USDA Forest Service Misc. Publ. No. 1175. Washington, D.C.

Borror, D.

J., and R. E. White, 1970. A field guide to insects of America north of Mexico. Houghton Mifflin Co., Boston. Commonwealth of Pennsylvania, 1985. Pennsylvania's Endangered Fishes, Reptiles and Amphibians. Published by the Pennsylvania Fish Commis-sion. Counts, C. C. III, 1985. Distribution of Corbicula fluminea at Nuclear Facilities. Division of Engineering, U. S. Nuclear Regulatory Com-mission. NUREGLCR. 4233. 79 pp.

Dahlberg, M.

D. and E. P. Odum, 1970. Annual cycles of species occur-rence, abundance and diversity in Georgia estuarine fish popula-tions. Am. Midl. Nat. 83:382-392. DLCo, 1976. Annual Environmental Report, Nonradiological Volume $1. Duquesne Light Company, Beaver Valley Power Station. 132 pp. DLCo, 1977. Annual Environmental Report, Nonradiological Volume #1. Duquesne Light Company, Beaver Valley Power Station. 123 pp. DLCo, 1979. Annual Environmental Report, Nonradiological Volume fl. Duquesne Light Company, Beaver Valley Power Station. 149 pp. l DLCo, 1980. Annual Environmental Report, Nonradiological. Duquesne Light Company, Beaver Valley Power Station, Unit No.1.160 pp. DLCo, 1981. Annual Environmental Report, Kenradiological. Duquesne Light Company, Beaver Valley Power Station, Unit No. 1. 105 pp. + Appendices. DLCo, 1982. Annual Environmental Report, Nonradiological. Duquesne Light Company, Beaver Valley Power Station, Unit No. 1. 126 pp. DLCo, 1983. Annual Environmental Report, Nonradiological. Duquesne Light Company, Beaver Valley Power Station, Unit No. 1. 124 pp. + Appendix. DLCo, 1984. Annual Environmental Report, Nonradiological. Duquesne Light Company, Beaver Valley Power Station, Unit No. 1. 139 pp. DLCo, 1985. Annual Environmental Report, Nonradiological. Duquesne Light Company, Beavery Valley Power Station, Unit No. 1& 2.' 106 Pp. EPA, 1973. Biological field and laboratory methods. EPA-670/4-73-001. Cincinnati, OH. 150

DUQUESNE LIGHT COMPANY 1986 ANNUAL ENVIRONMENTAL REPORT Hammill, Vincent J., Jr. (Commercial Diver) personal communication, July 18, 1986 Hammill, Vincent J., Jr. (Commercial Diver) personal communication, December 18, 1986. Hepting, G. H., 1971. Diseases of forest and shade trees of the United States. USDA Forest Service Handbook No. 386. Washington, D.C. Hilborn, W. H., 1978. Application of remote sensing in forestry. I2: Introduction to remote sensing of the environment. B. F. Richason, Jr., ed. Kendall/ Hunt, Dubuque, Iowa. Hutchinson, G. E., 1967. A treatise on limnology. Vol. 2, Introduction to lake biology and the limnoplankton. John Wiley and Sons, Inc., New York. 1115 pp.

Hynes, H.

B. N., 1970. The ecology of running waters. Univ. Toronto Press, Toronto.

Jacobson, J.

S. and A. C. Hill, 1970. Recognition of air pollution injury to vegetations a pictorial atlas. Air Pollution Control Association, Pittsburgh, Pennsylvania. 112 pp. Jenkins, Harold and Frank Logar, (DLCo Operations Personnel, BVPS) personal communication, January 10, 1986.

Johnson, W.

T. and H. H. Lyon, 1976. Insects that feed on trees and shrubs, Comstock Publishing Associates, Ithaca, New York. 464 pp.

Levitt, J.,

1972. Responses of plants to envircnmental stresses. Academic Press, New York. 697 pp.

Moxley, L.

and H. Davidson, 1373. Salt tolerance of various woody and herbaceous plants. Horticultural Report No. 23. Michigan State University, Department of Horticulture, East Lansing, Michigan.

Mudd, J.

B. and T. T. Kozlowski, 1975. Responses of plants to air pollution. Academic Press, New York. 383 pp. NRC, IE Bulletin 81-03: Flow Blockage of Cooling Water to Safety System Components by Corbicula sp. (Asiatic Clam) and Mytilus sp. (Mussel).

Pielou, E.

C., 1969. An introduction to mathematical ecology. Wiley Interscience, Wiley & Sons, New York, NY.

Pirone, P.

P., 1970. Diseases and pests of ornamental plants. The Ronald Press Company. New York. 546 pp. Robins, C. R., R. M. Bailey, C. E. Bond, J. R. Brooker, E. A. Lachner, R. N. Lea, and W. B. Scott, 1980. A list of common and scientific names of fishes from the United States and Canada (Fourth edition). Amer. Fish. Sco. Spec. Publ. No. 12:1-174. 151

DUQUESNB LIGHT COMPANY 1986 ANNUAL ENVIRONMENTAL REPORT

Scott, W.

B. and E. J. Crossman, 1973. Freshwater fishes of Canada. Fisheries Research Bd. Canada. Bulletin 184. 966 p.

Shipley, B.

L., S. B.

Pahwa, M.

D. Thompson, and R. B. Lantz, 1980. Remote sensing for detection and monitoring of salt stress on vegetation evaluation and guidelines. U. S. Nuclear Regulatory Commission.

Treshow, M.,

1975. Interaction of air pollutants and plant disease. In,: Responses of plants to air pollution. J. B. Mudd and T. T. Kozlowski, eds. Academic Press, New York. 383 pp. U. S. Department of Agriculture (USDA), 1979. A guide to common insects and diseases of forest trees in the northeantern United States. Forest Insect and Disease Management NA-FR-4. Forest Service. Northeastern

Area, State and Private

Forestry, Broomall, Pennsylvania.

126 pp.

Winner, J.

M., 1975. tooplankton. 3: B. A.

Whitton, ed.

River ecology. Univ. Calif. Press, Berkeley and Los Angeles. pp. 155-169. 152

\\ (/ d% 'Af Telephone (412) 393-6000 Nuclear Group P.O. Box 4 Shippingport. PA 15077M4 April 20, 1987 United States Nuclear Regulatory Commissien Document Control Desk Washington, DC 20555

Reference:

Beaver Valley Power Station Unit No. 1 Docket No. 50-334, License No. DRP-66 1986 Annual Environmental Report Non-radiological - Volume #1 Gentlemen: For your infornation, enclosed is a copy of the 1986 Annual Environmental Report (Non-radiological - Volume #1) for the Beaver Valley Power Station. Very truly yours, j h J. D. Sieber Vice President, Nuclear

• JWM:mb Enclosure cc:

United States Nuclear Regulatory Commission Regional Administrator, Region 1 631 Park Avenue King of Prussia, PA 19406 United States Nuclear Regulatory Commission Resident Inspector Peaver Valley Power Station Dottie Sherman American Nuclear Insurers Library The Exchange Suite 245 {g 270 Farmington Avenue / Farmington, CT 06032 r f \\}}