Text

Annual Environ Rept,Nonradiological,1982
	ML20073B019
Person / Time
Site:	Beaver Valley
Issue date:	03/28/1983
From:	; DUQUESNE LIGHT CO.
To:	;
Shared Package
ML20073A994	List: ML20073A990; ML20073B019;
References
	NUDOCS 8304110927
	Download: ML20073B019 (137)
	v • d • e

{{#Wiki_filter:. d 1982 ANNUAL ENVIRONMENTAL REPORT NON-RADIOLOGICAL DUQUESNE LIGHT COMPANY BEAVER VALLEY POWER STATION UNIT NO.1 DOCKET #50-334 i l 8304110927 8303200500033] l PDR ADOCK R

TABLE OF CONTENTS i i Page iv List of Figures i L ist of Table s....................... vi List of Exhibits x 1. INTRODUCTION...................... 1 II.

SUMMARY

AND CONCLUSIONS............... 7 III. ANALYSIS OF SIGNIFICANT ENVIRONMENTAL CHANGE 12 IV. MONITORING NON-RADIOLOGICAL EFFLUENTS....... 13 MONITORING CHEMICAL EFFLUENTS.......... 13 H E RBICIDES..................... 19 V. AQUATIC MONITORING PROGRAM............. 21 A. INTRODUCTION.................... 21 B. BENTHOS....................... 24 24 Objectives Methods 24 H abitats..................... 24 Community Structure and Spatial Distribution..... 31 Comparison of Control ar.d Non-Control Stations 31 Comparison of Preoperational and Operational Data 36 Summary and Conclusions.............. 41 C. PHYTOPLANKTON 42 42 Objectives 42 Methods..................... Seasonal Distribution................ 42 Comparison of Control and Non-Control Transects... 50 Comparison of Preoperational and Operational Data 50 Summary and Conclusions.............. 51 D. ZOOPLANKTON.................... 54 54 Objectives 54 Methods..................... Seasonal Distribution................ 54 Comparison of Control and Non-Control Transects... 62 Comparison of Preoperational and Operational Data 64 Summary and Conclusions.............. 66 3 i

J l 1 l TABLE OF CONTENTS (Continued) Page E. FkSH 67 Obj ective..................... 67 67 Methods R es ults...................... 69 Comparison of Control and Non-Control Transects... 74 Comparison of Preoperational and Operational Data 74 Summary and Conclusions.............. 78 80 F. ICHTHYOPLANKTON O bj ective..................... 80 80 Methods R e sults...................... 80 Comparison of Preoperational and Operational Data 85 Summary and Conclusions.............. 85 G. FISH IMPINGEMENT (ETS Reference 3.1.3.7)....... 87 Obj ectiv e..................... 87 87 Methods R e s ul ts....................... 87 Comparison of Impinged and River Fish........ 92 Comparison of Operating and Non-Operating Intake Bay Collections.............. 92 Summary and Conclusions.............. 98 101 H. PLANKTON ENTRAINMENT 1 Ichthyoplankton.................. 101 Obj ective.................... 101 101 Methods R e sul ts..................... 101 Seasonal Distribution............... 105 106 Spatial Distribution Summary and Conclusions............. 106 2. Phytoplankton................... 107 Obj ective.................... 107 107 Methods Comparisen of Entrainment and River Samples.... 107 Summary and Conclusions............. 108 108 3. Zooplankton.................... 108 O bj ectiv e.................... 108 Methods Comparison of Entrainment and River Samples.... 108 Summary and Conclusions............. 109 11

TABLE OF CONTENTS (Continued) Page VI. TERRESTRIAL MONITORING PROGRAM........... 110 A. INTRLDUCTION 110 B. AERIAL INFRARED PHOTOGRAPHY......... 110 O bj ec t i ve..................... 110 Methods 111 Results 116 Summary and Conclusions.............. 123 VII. REFERENCES 125 l I i I l iii l .. ~ _ _,... - _. _ -.,, -.. _ -,., _ _ -, -, - _ _, -.,... -,

LIST OF FIGURES Figure Page 1-1 VIEW OF THE BEAVER VALLEY AND SHIPPINGPORT POWER STATIONS.................... 2 I-2 LOCATION OF STUDY AREA, BEAVER VALLEY POWER STATION, SHIPPINGPORT, PENNSYLVANIA 3 1-3 OHIO RIVER DISCHARGE AND TEMPERATURE, RECORDED AT EAST LIVERPOOL, OHIO, BY THE OHIO RIVER VALLEY WATER SANITATION COMMISSION,1982 5 IV-1 RIVER INTAKE AND DISCHARGE IN OHIO RIVER SHIPPINGPORT AND BEAVER VALLEY POWER STATIONS.. 14 IV-2 WATER FLOW SCHEMATIC. BEAVER VALLEY POWE R STATION.................... 15 V-A-1 SAMPLING TRANSECTS IN THE VICINITY OF THE BEAVER VALLEY AND SHIPPINGPORT POWER STATIONS...... 22 Y-B-1 BENTHOS SAMPLING STATIONS, BVPS........... 26 V-B-2 PERCENT COMPOSITION OF THE BENTHOS COMMUNITY IN THE OHIO RIVER DURING PREOPERATIONAL AND OPERATIONAL YE ARS, BVPS............... 37 V-C-1 SEASONAL PATTERNS OF PHYTOPLANKTON DENSITIES IN THE OHIO RIVER DURING PREOPERATIONAL AND OPERATIONAL YEARS, BVPS............... 45 l V-C-2 PHYTOPLANKTON GROUP DENSITIES FOR ENTRAINMENT SAM PLES,1982, BVPS.................. 46 V-D-1 SEASONAL PATTERNS OF ZOOi'LANKTON DENSITIES IN THE OHIO RIVER DURING PREOPERATIONAL AND OPERATIONAL Y E A RS, B VPS...................... 57 V-D-2 ZOOPLANKTON GROUP DENSITIES FOR ENTRAINMENT SAM PLES,1982, BVPS.................. 59 V-E-1 FISH SAMPLING STATIONS, BVPS............. 68 V-F-1 ICHTHYOPLANKTON SAMPLING STATIONS, BVPS..... 81 V-G-1 INTAKE STRUCTURE, BVPS 88 iv

LIST OF FIGURES (continued) Figure Page VI-B-1 INDEX TO PHOTOGRAPHY, BEAVER VALLEY POWER STATION AND VICINITY, JULY 21,1982............... 112 VI-B-2 DISTRIBUTION OF VEGETATION STRESS IN THE VICINITY OF THE BEAVER VALLEY POWER STATION SITE,1982.... 117 I l V --, - --.._._ ~,..- - -.

LIST OF TABLES Page Table I-l OHIO RIVER DISCHARGE AND TEMPERATURE, RECORDED AT EAST LIVERPOOL, OHIO, BY THE OHIO RIVER VALLEY WATER SANITATION COMMISSION,1982.......... 6 IV-1 BEAVER VALLEY POWER STATION - HERBICIDES USED,1982 20 Y-A-1 AQUATIC PROGRAM MONITORING SAMPLING DATES, 23 1982,BVPS....................... V-B-1 SYSTEMATIC LIST OF MACROINVERTEBRATES COLLECTED IN PREOPERATIONAL AND OPERATIONAL YEARS IN THE OHIO RIVER NEAR BVPS............... 26 V-B-2 MEAN NUMBER OF MACROINVERTEBRATES AND PERCENT COMPOSITION OF OLIGOCHEATA, CH'

40MIDAE, MOLLUSCA AND OTHER OPGANISYS,1182, BVPS.....

32 V-B-3 BENTHIC MACROINVERTEBRATE DENSITIES, MEAN OF TRIPLICATE FOR BACK CHANNEL AND DUPLICATE SAMPLES COLLECTED IN THE MAIN CHANNEL, OHIO RIVER, M AY 18, 1982, BVPS................... 33 V-B-4 BENTHIC MACROINVERTEBRATE DENSITIES, MEAN OF TRIPLICATE FOR BACK CHANNEL AND DUPLICATE SAMPLES COLLECTED IN THE MAIN CHANNEL, OHIO RIVER SEPTEMBER 23,1982, BVPS................ 34 V-B-5 MEAN DIVERSITY VALUES FOR BENTHIC MACRO-INVERTEBR ATES COLLECTED IN THE OHIO RIVER 1982,BVPS....................... 38 V-B-6 BENTHIC MACROINVERTEBRATE DENSITIES FOR STATION 1 AND STATION 2B DURING PREOPERATIONAL AND OPERATIONAL YEARS, BVPS... 39 V-C-1 MONTHLY PHYTOPLANKTON GROUP DENSITIES AND PERCENT COMPOSITION FOR ENTRAINMENT SAMPLES 43 1982,BVPS....................... V-C-2 PHYTOPLANKTON DIVERSITY INDICES BY MONTH FOR ENTRAINMENT SAMPLES,1982, BVPS........... 47 vi l

LIST OF TABLES (Continued) Table Page V-C-3 DENSITIES OF MOST ABUNDANT PHYTOPLANKTON TAXA COLLECTED FROM ENTRAINMENT SAMPLES, JANUARY THROUGH DECEMBER 1982, BVPS 48 V-C-4 PHYTOPLANKTON DIVERSITY INDICES, NEW CUMBERLAND POOL OF THE OHIO RIVER, BVPS............. 52 7-D-1 MONTHLY ZOOPLANKTON GROUP DENSITIES AND PERCENT COMPOSITION FOR ENTRAINMENT SAMPLES COLLECTED, 1982,BVPS....................... 55 V-D-2 MEAN ZOOPLANKTON DENSITIES BY MONTH 1973 THROUGH 1982, OHIO RIVER AND BVPS.......... 58 V-D-3 DENSITIES OF MOST ABUNDANT ZOOPLANKTON TAXA COLLECTED FROM ENTRAINMENT SAMPLES, JANUARY THROUGH DECEMBER 1982, BVPS 60 V-D-4 ZOOPLANKTON DIVERSITY INDICES BY MONTH FOR ENTRAINMENT SAMPLES,1982, BVPS........... 63 V-D-5 MEAN ZOOPLANKTON DIVERSITY INDICES BY MONTH FROM 1973 THROUGH 1982 IN THE OHIO RIVER N E A R B VPS....................... 65 V-E-1 FAMILIES AND SPECIES OF FISH COLLECTED IN THE NEW CUMBERLAND POOL OF THE OHIO RIVER, 1970 THROUGH 1982, BVPS................ 70 V-E-2 NUMBER OF FISH COLLECTED BY GILL NET, l ELECTROFISHING, AND MINNOW TRAP AT j TRANSECTS IN THE NEW CUMBERLAND POOL OF l THE OHIO RIVER,1982, BVPS............... 72 V-E-3 NUMBER OF FISH COLLECTED PER MONTH BY GILL NET, ELECTROFISHING, AND MINNOW TRAP IN THE NEW l CUMBERLAND POOL OF THE OHIO RIVER,1982, BVPS... 73 l V-E-4 NUMBER OF FISH COLLECTED BY GILL NET, ELECTROFISHING, AND MINNOW TRAP AT TRANSECTS IN THE NEW CUMBERLAND POOL OF THE OHIO RIVER,1982, BVPS. 75 l vii e ww

j LIST OF TABLES (Continued) Table Page V-E-5 ELECTROFISHING CATCH, MEANS AT TRANSECTS IN THE NEW CUMBERLAND POOL OF THE OHIO RIVER, 1974 THROUGH 1982, BVPS................ 76 V-E-6 GILL NET CATCH, MEANS AT TRANSECTS IN THE NEW CUMBERLAND POOL OF THE OHIO RIVER, 1974 THROUGH 1982, BVPS................ 77 V-F-1 NUMBER AND DENSITY OF FISH EGGS, LARVAE, JUVENILES, AND ADULTS COLLECTED WITH A 0.5m PLANKTON NET IN THE OHIO RIVER BACK CHANNEL OF PHILLIS ISLAND NEAR BVPS,1982........... 82 V-F-2 DENSITY OF ICHTHYOPLANKTON COLLECTED IN THE OHIO RIVER BACK CHANNEL OF PHILLIS ISLAND NEAR BVPS,1973 THROUGH 1974, 1976 THROUGH 1982................... 86 V-G-1 FAMILIES AND SPECIES OF FISH COLLECTED DURING THE IMPINGEMENT SURVEYS,1976 THROUGH 1982,BVPS....................... 89 V-G-2

SUMMARY

OF FISH COLLECTED IN IMPINGEMENT SURVEYS CONDUCTED FOR ONE 24 HOUR PERIOD PER WEEK DURING 1982, BVPS................ 91 V-G-3

SUMMARY

OF IMPINGEMENT SURVEY DATA FOR 1982, BVPS 93 V-G-4

SUMMARY

OF FISH COLLECTED IN IMPINGEMENT SURVEYS,1976 THROUGH 1982, BVPS........... 95 V-G-5 NUMBER AND PERCENT OF ANNUAL TOTAL OF FISH COLLECTED IN IMPINGEMENT SURVEYS AND IN THE NEW CUMBERLAND POOL OF THE OHIO RIVER, 198 2, B V PS....................... 97 V-G-6

SUMMARY

OF INVERTEBR ATES COLLECTED IN IMPINGEMENT SURVEYS CONDUCTED FOR ONE 24 HOUR PERIOD PER WEEK 1982, BVPS.............. 99 V-H-1 NUMBER AND DENSITY OF FISH EGGS, LARVAE, JUVENILES AND ADULTS COLLECTED WITH A 0.5m PLANKTON NET AT THE ENTRAINMENT RIVER TRANSECT IN THE OHIO RIVER NEAR BVPS,1982 102 viii -.... _ _... - - -. - -. - -. - - - - -. - -. -. -, _ - - _ = _ -

LIST OF TABLES (Continued) Page Table VI-B-1

SUMMARY

OF THE 1982 AERIAL PHOTOMISSION FLOWN IN THfi VICINITY OF THE BVPS,,,,,,,,,,,.... 113 VI-B-2' TYPE AND FREQUENCY OF VEGETATION STRESS IN THE VICINITY OF THE BEAVER VALLEY POWER STATION, 1982 ECOLOGICAL MONITORING PROGRAM,,,,,,,, lig / i ix

LIST OF EXHIBITS Exhibit Page VI-B-1 KUCERA AND ASSOCIATES FLIGHT REPORT....... 114 l X

SECTION I DUQUESNE LIGHT COMPANY 1982 ANNUAL ENVIRONMENTAL REPORT 1. INTRODUCTION This report presents a summary of the non-radiological environmental data collected by Duquesne Light Company (DLCo) during calendar year 1982, 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 I 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 the aquatic monitoring program, with the exception of fish impingement (Amendment No. 25), from the Environmental Technical Specifications (ETS). This report contains the requirements for the ETS (Reference 3.1.3.7) fish impingement and all the river data collected in 1982. SCOPE AND OBJECTIVES OF THE PROGRAM The objectives of the 1982 environmental program were: (1) to comply with Nuclear Regulatory Commission requirements (2) to review chemical releases and thermal discharges from the station to verify that they do not adversely affect public health or the natural environment (3) to assess the possible environmental impact of plant operation (including impingement and entrainment) on the plankton, benthos, fish and ichthyo-plankton communities in the Ohio River (4) to establish long and short range programs based on data. SITE DESCRIPTION BVPS is located on the south bank of the Ohio River in the Borough of Shippingport, Beaver County, Pennsylvania, on a 486.8 acre tract of land which is owned by Duquesne Light Company. 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 1

g DUQUESNE LIGHT COMPANY 1982 ANNUAL ENVIRONMENTAL REPORT T.I.T }* ' ?/.T& %{' L{j g u ri" j .; g d{

k

. ? k., a . ~ }t h [ L k' h . t. g g i., l n L4 k -g w 'ig ~ qg 2 li --l]..=== ' Q ~ J s l j l- ~ c I 'I e-- r 1 j h, ~k Y g 1 j; s l i j j ~ .m. 3 i = 1 } i: U b ~h t r., l \\ [_;;;g 0 + i .t 3 n.~. '!.., Z.~ 35.- t

g

... j L*.9 f ~d

't

~~ ,[ [ i __n--,,,

SECTION I DUQUESNE LIGHT COMPANY j 1982 ANNUAL ENVIRONMENTAL REPORT ) r-l l

1

= N i 'N :..., .a - 1 f s! "

E; 1 2

13: ![ ~...0, I 6 D; 1C fg 4 2 1 ?' ! /# $g >E at If

t t

G d'. I.,!f \\ , @y a t==,, .1 z i 4 fq E EE g gg ~. c <, g Eo <E -t" i 1-35 \\ 1 s i*i Ig N i1 5 2 Si a \\ O 3 3 u-fi t li 1 i I(- .j -~. di;.. I ( e L - i k 1 I N e \\x-y I 3 l l

SECTION I DUQUESNE LIGHT COMPANY 1982 ANNUAL ENVIRONMENTAL REPORT relatics to the principal population centers. Population density in the immediate vicinity of the site is relatively low. There are no residents within a 0.5 mile (0.8 km) radius of either plant. The population within a 5 mile (8 km) radius of the p'lant 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 ft (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 location on the New Cumberland Pool that is 3.3 river miles (5.3 km) downstream from Montgomery Lock and Dam and 19.4 miles (31.2 km) upstream from New Cumberland Lock and Dam. The Pennsylvania-Ohio-West Virginia border is 3.2 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 tributaries. Flow generally varies from 5,000 to 100,000 cubic feet per second (cfs). The range of flows in 1982 is shown in Figure I-3 (Table I-1). Ohio River water temperatures generally vary from 32 to 82 F (0 to 28 C). Minimum and maximum temperatures generally occur in January and July / August, respectively. During 1982, minimum temperatures were observed in January and maximum temperatures in July (Figure I-3)(Table I-1). l BVPS has a thermal rating of 2,660 megawatts (Mw) and an electrical rating of 852 Mw. The circulating water system is a closed cycle system using a cooling j tower to minimize heat released to the Ohio River. Commercial operation of BVPS Unit I began in 1976. I 4

SECTION I DUQUESNE LIGHT COMPANY 1982 ANNUAL ENVIRONMENTAL REPORT 4 /\\ ~ ~ - - / \\ / \\ eso e c 4anas y-i \\\\ E \\ \\ g -- 1 \\ /sN. / e \\ / \\ / \\ / s \\./ \\ / \\ / a- / s \\_ . ~ / / 0 l l l l 1 I I I I I I I i / ~s l \\ / \\ \\ / g r/ s ~ i N m- / / \\ \\ I \\ t / \\ I \\ g- / \\. g I s I / s = s / \\ / \\ so - / / / / 7/ /- ac i,1 1 1 1 1,1,1-l=la 1-l=1 .= FIGURE l-3 OHIO RfvER DeSCHARGE (Flow cis) AMO TEMPERATURE ( FL RECORDED AT EAST UvtRPOOL O@ (MP 40 2) BY THE OHoo RrdR VALLEY WATER SAletTATION COMMISS40N (ORSANCOL 1982 1 5 ,._,._+-______,.y_,

2 l l 4 a rn O-t i TABLE I-l 6Z OHIO RIVER DISCHARGE (Flow cfs) AND TEMPERATURE ( F) RECORDED AT EAST LIVERPOOL, OHIO (MP 40.2) BY THE OHIO RIVER VALLEY WATER SANITATION CXM94ISSION (ORSANCO) 1982 5 oo M nth J F M A M J J A S O N D 3 Flow (cfs x 10 ) zO i .l 2 C >h C Maximum Daily Average 119.5 131.1 160.2 74.2 46.0 77.6 65.7 17.5 18.1 14.3 76.5 78.3 ec: ] Monthly Average 50.6 68.2 83.8 47.3 19.6 42.0 21.0 10.7 10.3 9.0 25.8 46.6 gZ 1 sr Minimum Daily Average 25.0 37.8 33.8 18.1 10.8 12.3 9.0 7.7 6.1 7.2 9.2 23.1

c g 1

Og Z, 1 Temperature ( F) h -t 3l: l Maximum Daily Value 37.8 40.4 44.3 58.2 73.7 73.4 83.7 82.1 74.9 69.2 58.9 49.2 gj

c Z Monthly Average 33.9 36.2 40.2 50.4 68.5 69.1 79.5 79.1 71.6 63.2 51.3 43.'7 rn ~<

'o O Minimum Daily Value 32.5 33.3 37.3 40.9 58.8 64.9 72.6 74.8.67.2 56.2 45.5 38.7 p2 H i 4 i i l i i 1 ^

SECTION 11 DUQUESNE LIGHT COMPANY 1982 ANNUAL ENVIRONMENTAL REPORT

SUMMARY

AND CONCLUSIONS The 1982 BVPS Unit I non-radiological environmental monitoring program included surveillance of thermal and chemical effluents, Ohio River aquatic life, and a ~ terrestrial ecological survey using aerial infrared photography. This is the seventh year of operational monitoring and, as in the previous operational monitoring years, no evidence of adverse environmental impact to the Ohio River or the surrounding vegetation was observed. Thermal and chemical effluent monitoring included measurement of temperature and free available chlorine at the outfall, pH at the chemical waste sump and chromates at the low level waste drain tank. I 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 1982 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 paragraphs summarize these findings. Benthos. The structure of the benthic macroinvertebrate community during 1982 was similar to that observed during other operational years (1976 through 1981) and preoperational years (1973 through 1975). Oligochaetes have been the most numerous organisms in the community each year and they comprised 81% by t numbers of the community in 1982. A similar oligochaete assemblage has been reported each year. Chironomids and mollusks comprised the remaining fraction (19.0%) of the macroinvertebrate community. Common genera of oligochaetes were Limnodrilus, Nais, and Paranais. Substrate composition was probably the most important factor controlling the benthic macroinvertebrate community of the Ohio River near BVPS. Soft muck-type substrates along the shoreline were conducive to worm and midge proliferation, while limiting macroinvertebrates that I require a more stable bottom. The predominant macroinverte brates were burrowing taxa typical of soft substrates. The potential nuisance clam, Corbicula, 7 - ~.,.

SECTION 11 DUQUESNE LIGHT COMPANY 1982 ANNUAL ENVIRONMENTAL REPORT had increased in abundance from 1974 through 1976, bC declined in number af ter 1977. No Corbicula were collected during 1979 or 1980. Corbicula were present in the 1981 collections and were collected in the 1982 benthic surveys. Analysis of data for Control and Non-control Stations found no evidence to indicate that thermal and chemical effluents released from BVPS were adversely affectinF; the Ohio River benthos. Phytoplankton. The phytoplankton communliy of the Ohio River near BVPS exhibited a seasonal pattern similar to that observed in previous years aled a pattern common to temperate, lotic environments. Total cell densities were within the range observed during previous years. Diversity indices of phytoplankton were as high or higher than those previously observed near BVPS. This was probably due to decreased precipitation and favorable weather conditions that occurred during 1982. Zooplankton. Zooplankton densities throughout 1982 were typical of a temperate zooplankton community found in 'arge river habitats. Total densities were slightly higher than those reported in previous years. Based on the data collected during the seven operating years (1976 through 1982) and the three preeperating years (1973 through 1975), it is concluded that the overall abundance and spec.ies composition of the zooplankton in the Ohio River near BVPS has remained stable No and possibly improved slightly over the 10-year period from 1973 to 1982. evidence of appreciable harm to the river phytoplankton and zooplankton from BVPS Unit 1 operation was found. Fish. Fish surveys, conducted during May, July, September and November 1982, collected a total of 1,248 firh, representing 32 fish species. Two species, spottail shiner and flathead catfish, had not been collected previously. Collection methods electrofishing, gill nets, and minnow traps. The majority of fish (643) included: were captured by electrofishing. Approximately 37.3% of the electrofishing catch consisted of emerald shiners.- 8

SECTION 11 DUQUESNE LIGHT COMPANY 1982 ANNUAL ENVIRONMENTAL REPORT 1 Carp (21 fish) comprised the majority of the (126) gilt netted fish. Gizzard shad, walleye, and channel catfish were the other species representing the next highest [ numbers of fish netted. Minnow traps collected 479 fish, the majority of which were bluntnose minnows (35.9%). i t Variations in annual total numbers of fish caught occurred during preoperational and operational years. These variations are due primarily to fluctuations in numbers of small species (principally minnows and shiners). Larger f'ish (carp, channel catfish, smallmouth bass, yellow perch, walleye and sauger) have remained common species near BVPS. Members of the pike family (northern pike and muskellunge) not collected during preoperational years were collected 1977 through 1982. Their presence and the presence of other sport fish is important because it demonstrates that the Ohio River is meeting the minimum water quality, habitat and food requirements of these desirable sport fish. Differences in fish species composition which were observed upstream and down-i stream of BVPS probably reflect habitat preferences of individual species. No evidence was found to indicate that the fish community near BVPS has been adversely affected by BVPS operation. No fish classified as endangered or threatened by the Commonwealth of Pennsylvania or the U.S. Fish and Wildlife Service were collected during 1982. Ichthvoplankton. Ichthyoplankton (fish eggs, larvae and juveniles) data were evaluated to determine spawning activity near BVPS and, in particular, spawning in the back channel of Phillis Island. Spawning activity was limited to June and July 1 with little activity in April and May. Cyprinids (minnows and carps) accounted for 92.5% of the 94 larvae collected. Only 7 eggs were collected. l Data collected from 1973 through 1982 in the back channel of Phillis asiand, the i channel receiving the majority of discharges from BVPS, indicated that this channel was not used any more extensively for spawning purposes than main channel areas. No evidence was found to indicate BVPS operation was adversely affecting the ichthyoplankton of the Ohio River. 1 4 i 9 l ..,--...n.

SECTION 11 DUQUESNE LIGHT COMPANY 1982 ANNUAL ENVIRONMENTAL REPORT Impingement. Impingement surveys were conducted for one 24-hour period per week in 1982. A total of 227 fish weighing 0.596 kg (1.32 lbs) was collected. Emerald shiner (30.0%), channel catfish (26.0%), and unidentified Notropis spp. (9.7%) comprised 65.6% of the annual catch. Of the 227 fish collected,71 (31.3%) were alive and returned via the discharge pipe to the Ohio River. The majority of fish were less than 100 mm in length. The 1982 annual impingement catch was less than 1979 (262 fish),1978 (654 fish),1977 (10,322 fish) and 1976 (9,102 fish). However, it was slightly more than the 1980 (108 fish) and 1981 (141 fish) collections. Entralnment. Entrainment studies were performed to investigate the impact on the ichthyoplankton of withdrawing river water for in-plant use. Entrainment-river transect surveys for ichthyoplankton were conducted to ascertain any changes in spawning activity occurring in the Ohio River adjacent to the BVPS intake. As in previous years, ichthyoplankton were most abundant in June and July; collections were dominated by cyprinid (minnows and carps) larvae (92.9%). Assuming actual entrainment rates were similar to those found in 1976 through 1979, river abundance of ichthyoplankton indicate no substantial entrainment losses should have occurred in 1982 due to the operation of BVPS. Assessment of monthly phytoplankton and zooplankton data of past years indicated that under worst-case conditions of minimum low river flow (5000 cis), about 1.25% of the phytoplankton and zooplankton passing the intake would be withdrawn by the BVPS circulating water system. This is considered as a negligible loss of phytoplankton and zooplankton relative to river populations. Vegetation. During the summer and fall of 1982, stress on terrestrial vegetation was monitored in the vicinity of the Beaver Valley Power Station cooling tower as part of an Ecological Monitoring Program. Color infrared (CIR) aerial photog-raphy, photointerpretation of the imagery, and field observations were used to detect stressed or damaged vegetation and to determine probable causes. 10 a y -m

-.~ SECTION H DUQUESNE LIGHT COMPANY 1982 ANNUAL ENVIRONMENTAL REPORT i Based on interpretation of the CIR aerial photography and field verification, there j is no evidence to suggest that the BVPS cooling tower is causing vegetation stress. j i i 2 11

SECTION III DUQUESNE LIGHT COMPANY 1982 ANNUAL ENVIRONMENTAL REPORT !!!. ANALYSIS OF SIGNIFICANT ENVIRONMENTAL CHANGE in accordance with BVPS Unit 1 ETS, Appendix B to Operating License No. DPR-66, significant environmental change analyses were required on benthos, p'hytoplankton, 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). Therefore, this report deals with fish impingement and the optional programs initiated by DLCo in the interest of providing a non-disruptive data base between the start-up of BVPS Unit 1 and that of Unit 2. 12

.= SECTION IV DUQUESNE LIGHT COMPANY 1982 ANNUAL ENVIRONMENTAL REPORT IV. MONITORING NON-RADIOLOGICAL EFFLUENTS MONITORING CHEMICAL EFFLUENTS Most of the water required for the operation of BVPS is taken from the Ohio River and discharged at points shown in Figure IV-1. Figure IV-2 is a schematic diagram of liquid flow paths for BVPS. There are four parameters identified in the Environmental Technical Specifications (ETS) which must be monitored, and if limits are exceeded, reported. The four parameters are: 1. Temperature at the outfall 2. Free Available Chlorine at the outfall 3. pH at the chemical waste sump 4. Chromates at the low level waste drain tank in addition, the amounts of chemicals released to the environment are noted in the BVPS, Unit 1 Environmental Statement and are listed below: Source Material Released Cation-Anion Neutralized Waste Na SO 2 4 Mixed Bed Neutralized Waste Na SO 2 4 Water Softener Waste Nacl Cooling Tower Biocide C12 Reactivity Control H B0 3 3 0 K Cr2 7 Corrosion Control 2 All of the above chemicals were released during 1982. i 13

SECTION IV DUQUESNE LIGHT COMPANY 1982 ANNUAL ENV:RONMENTAL REPORT E E a - 5J 45! ogiS Es =v: n. t. = we e EES. E. s Es! "3 22. e rs: e-a e = =gse g g -n

- I

== f 2.g: Jan8 aud e* =E eg:<u mE e._ us=. s e n_!= <gaa = =

== R3 t#EE g s;E M a g = S ass: .m E !. w y ,,,,,,,,,,,,,,,nn,, rsN;7/a9.svoosmaarvnfl (82/ uM) Pavarddy avor wg .e mu, mun m u, u s, p ,m u n n,m m.m mmm, m i m s, E E E W 1 = E-3-fr

ge a

n 8.g e 3 g "E:"3 l 8 8 2 l E 355 5 I 5 5 g E --a a s ss -H_ = g na v : 8 :. = m ge 3-e 8 8m gI g r _I e= .-er

==E ) 33 n 35 E L EN** M i 'i t ~ 1 s .d \\ h U 3 s "u s s W8 o 5. 3 3

.g C

p E E 8k ..=e + E 5 g d_____ Q, i / h / kJ .-E S En k' !u / j =; .= 3 .". 8 i g O lE 4 E l N .x -E .. : m: a. g. 3 g: :s=i -s $5!s.s_ .z. 14

SECTION IV DUQUESNE LIGHT COMPANY 1982 ANNUAL ENVIRONMENTAL REPORT ruean&== ussas 1 EAFER val *Jr PoWE13;At :s Cool:3c Tcutt Om-Fcursy FL'.V,, f l A ) k / '.6 I 1 FE.CiAAT AMD MA:3 ega-- Art 2 CII 7 'g ggA; ces:c:sn ,,m u, A2D G ILI.Zss db ,A.I. M l W srs: a l 1 i d d gr ar IIAc=E sD7:3 M 30C21 sA==.ARY hA;zg sTs m s sTs:sm. sTs Es sm=x I L } \\ EADVAsT1 mm a Ptcc:ss== r sm x s;:::s I31 ( sc1zzz v4.sa l J L ,( sTsTIM

rzAsz r:Mrs l

i sa sa I T1sT sOZEN agg trvt:r:r:5 vars

3.m d

( Pars j )6 = 7-y, 1 7 V 9 sum s Am vm num em num en:.rr su m ec:.zr sum va:.:.z: vA:. z tovu s:Ans Fem s:A:=s revet s:A= 5 PCWE1 s*.An=3 FC m s*.AI:03 su,va.v a PCEER ACE,0 sCIABCE ACE.31 3 *3CE 31 SCIA GE (002) 31sch:2 (303) 313 3AR= (CC1) g gm .y.g s*pACI. (007) (004) stam v"* " = resta s.A:.:s un-in etew sci m --- - stA'rta su re.n stA;:::: 3:3 m 3:43 FIGURE IV-2 15

SECTION IV DUQUESNE LIGHT COMPANY 1982 ANNUAL ENVIRONMENTAL REPORT l Results Limiting Conditions for Operation The range observed during 1982 for each of the four parameters monitored in liquid effluents which have specified limits are as follows: Range of Values Discharged in Parameter Limits 1982 Temperature at the outfall 94 F (4 hrs.) 35 to 92 F Free Available Chlorine at the outfall 0.5 mg/l 0.0 to 0.45 mg/l pH at the chemical waste sump 6.0 to 9.0 6.0 to 9.0 Chromates at the low level waste drain tank 0.05 mg/l less than 0.05 mg/l During 1982, the maximum allowable daily chlorination time limit of two hours for Free Available Chlorine was exceeded. Explanation is as follows:

1. Free Available Chlorine On September 23, 1982, the main unit condenser chlorination limit of 2 hours per day was exceeded by five hours. This was due to an oversight during a time when other plant transients were occurring. The chlorination system will be placed in the AUTO mode of operation in order to prevent reoccurrence. Grab sampling verified that the daily maximum allowable limit of 0.5 mg/l was not exceeded. The environmentalimpact on the river ecosystem should have been minimal as the free available chlorine measured remained below the daily maximum limit.

Chemicals Released Estimated Amount

Actual Amount Source Released (iblyr)

Released (1blyr) Cation - Anion 20,000 245,700 Neutralized Waste (Sodium Sulfate) Mixed Bed Neutralized Waste 5,000 9,800 (Sodium Sulfate) 16

SECTION IV DUQUESNE LIGHT COMPANY 1982 ANNUAL ENVIRONMENTAL REPORT Water Softener Waste 15,000 39,750 (Sodium Chloride) Cooling Water Biocide 2,380 179.3 (Chlorine) Reactivity Control 20,000** 15,428 (Boric Acid) Corrosion Control 4.5 less than 1

By inventory differential or calculated usage.
- Indicates previous approved change in Technical Specification, Appendix B, Amendment No.15.

The amounts discharged exceeded the estimated release values in all cases except cooling water biocide, reactivity control and corrosion control (hexavalent chromium). The increased use rate was attributed to the following: Cation-Anion Neutralized Waste The water demands for BVPS continue to be greater than originally estimated. The amount discharged in 1982 was somewhat lower than that experienced during years of similar power production. Although the amount of sodium sulfate exceeded original estimates, adverse effects to the ecosystem were not suspected. A special assessment (study) was conducted to evaluate the effects of sodium sulfate on the Ohio River and was included in the 1978 Annual Ecological Report (Appendix "B"). The special assessment (study) concluded that no adverse affects to aquatic life would be expected if the annual release of sodium sulfate was increased to 700,000 lb/ year @Je to low release concentratien, short exposure time and the minimal amount released in comparison with natural levels in the Ohio River. Mixed Bed Neutralized Waste The discharge of mixed bed waste was in the expected proportion to that of the cation - anion neutralized waste. As noted above, an assessment of the impact of sodium sulfate on the ecosystem in the Ohio River was presented in the 1978 l Annual Ecological Report (Appendix "B"). I l 17

SECTION IV DUQUESNE LIGHT COMPANY 1982 ANNUAL ENVIRONMENTAL REPORT Water Sof tener Waste The use of soft water increased beyond that originally estimated because man-power levels at the station (both in-plant personnel, as well as contractors) were much larger than originally predicted. Although the amount of sodium chloride released to the environment exceeded original estimates, the amounts discharged should not have harmed the ecosystem. A special assessment (study) was conducted to evaluate the effects of sodium chloride on the Ohio River and was included in the 1978 Annual Ecological Report ( Appendix "C"). The special assessment (study) concluded that the release of 250,000 pounds of salt (Nacl) annually will not adversely affect aquatic life in the Ohio River. Cooling Water Biocide The average free available chlorine concentration is limited to 0.2 mg/l over a 2 hour period per day. Based on actual analyses and blowdown flow, the total chlorine released during 1982 was 179 pounds. This amount was well below original estimates. Reactivity Control The amount of boric acid use during 1982 was determined by actual analyses of all radwaste discharged. This amount was below estimates noted in Amendment 15 of the BVPS Technical Specifications. Corrosion Control The amount hexavalent chromate released in 1982 was obtained using chemical analys^s of all reactor plant discharges. The maximum chromate discharged, based on total liquid radwaste discharged in 1982 and the detectable level of chromate, was less than one pound. This also is well below original estimates. 18

SECTION IV DUQUESNE LIGHT COMPANY 1982 ANNUAL ENVIRONMENTAL REPORT HERBICIDES Herbicides were used for weed control during 1982. Areas specifically designated for protection and restriction from herbicide application have not been sprayed. No accidental spills of herbicides occurred during the year. Table IV-1 summarizes the usage of herbicides at the BVPS,1982. i 1 f I l-i 19 i l ' ' ~ " '~ .,-_,_.,._.._.s.

gtZM *t6gH nO3' >3* o O (AmOHbf< 0C $N >22C>F m d%O.[ gzg>t mm]y 2 ~ d 2 g e 8222 n 22 ei - 888 ic 222 2 88 l 8 tap u 2127 59 888 8 Dp o A 3669T 88 678 9 n o k i c lat u ia r r ic t el k Ap n p o o a A N N T 0 1 o s t n 3 o n di l x p h s h a nt a i d o t e iWn mr m l r ph si o opp 3 sm e C nam 0 L5 D ES yy U f a r S don p r e n o d p pv E a yi r e rA s eipe

e. s D

ct I dn a b e c n yd y gx r IC oe y h uli olTal y r r a oa B qp lciyr a a li p t e r e r e ep yh pe p op y r R MrA CWD5Y S Fa4 E F H N O 1 I V I TA2 E 8 T n t l ls 9 L S 1 fio s q f a a B b s A R ot l 0 qa 5 r 3 r ge g e .t a T E e c 20 she 2 c c e t i 0t W al 1 a oa t O Hp p r 0 ra o t r r p pet 0er e the t P A A pI p 5 p p 1 YE L L A V e t 1 a R n r e A0 t f E o o - e a i 31T o e r V ies b dr %2 lp nnI l.r t F t l ae e v aia io

5. d p

A ooRat u E rti t t xl 0a d r a t r ea oi 1 e lr rDgx ew B n c e Md iG l r r 1 r 5 CT o0ao0m eat y%T i p ig os cf a cn n oM mh5 m%mt latei laat.he g t .l ai .rn ..L a u o l 1 r lag o iua noi0 r6 r t 0 C dt6 rd3 o c ga g g pi a h0 t t oe oo r n a ST BS BI wc h4l ww l1 I e e iv v e d i 1 it t d c A0Td ra e3 31F d i e r y le# nnRIA e c ip oh b y b c s. oodDy it rT at - b n e ei nr lr r r e a w oe aoop H r r US NH CTLS K e ) p ) c. 4 e w 1 p 4 n 1 t T n n n u 3 t id iog e e o ( e y (3 o w a t tl iFb r y T t e as aS S 5t h. iea le re. cU Psda iy l F p. d lon t l d n i p l t loNTF o br e - r wi r L V u ar Vo0 a BSYA BN2d C CI MO

SECTION V DUQUESNE LIGHT COMPANY 1982 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,nain 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 I are released to the back channel. Transect 3 is located approximately 2 mi(3 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. I 1 i 21

v, moaO2 h ii"g* f'"11(,, t sc.ta eaEf ,4 [p '4 G. o 4,d.,1c' ...,A w i '\\,, plDLANQ4,g,i ga ,\\> , t',,, ( z c TRANSECT 3 %, e CO @E N 'T %,' ' " ' 'l e **** +,; g y my g,g%, i,, 4 's, >> ' we e 2m ) ,1* 'y'. t 5 r-gg )N

f...

%g 2, g \\ TRANSECT I zO -< E p g %y i TRANSECT 2A LEGEND h DI SE AVER VALLEY DISCHARGE g,,,,, os i g H D2 SHIPPINGPORT DISCHARGE I s***. D3 INDUSTRIAL DISCHARGE 8EAVER ,1 O A10 TO NAVIGATION r TRANSECT 28 gPPIN,Gg,A {l,,,,,,,,, mtgy

TR ANSutSSION LINE STATION FIGURE V-A-1 SAMPLING TRANSECTS IN Tile VICINITY OF THE BEAVER VALLEY AND SillPPINGPORT POWER STATIONS 1

I

TABLE V-A '1 y n AQUATIC PROGRAM MONITORING SAMPLING DATES d 1982, BVPS h Entrainment Plankton Month Benthos Fish Impingement Ichthyoplankton (Phyto and Zoo) JAN 8, 15, 22, 29 22 FEB 7, 15, 19, 26 19 ha >0 2 MAR 5, 12, 19, 26 19 Z C CD %h APR 2, 9, 16, 23, 30 19 23 rn$ MAY 18 18, 19 7, 14, 21, 28 18 21 Z rn b C hQ sa JUN 4, 11, 18, 25 21 18 z -4 JUL 20, 21 2, 9, 16, 23, 30 20 16 gn Z O 7 -i j AUG 6, 13, 20, 27 20 y$ i gk SEP 23 22, 23, 29 3, 10, 17, 24 17 ] Q 1 OCT 1, 8, 15, 22, 29 22 -i NOV 9, 10 5, 12, 19, 27 19 i DEC 3, 10, 17, 24, 31 10 i i i d

SECTION V DUQUESNE LIGHT COMPANY 1982 ANNUAL ENVIRONMENTAL REPORT B. BENTHOS Obiectives To characterize the benthos of the Ohio River near BVPS and to determine the impact, if any, of BVPS operations. Methods Benthic surveys were performed in May and September, US2. Benthes samples were collected at Stations 1, 2A, 2B and 3 (Figure V-B-1), using a Ponar grab sampler. Duplicate samples were taken off the south shore at Stations 1,2A and 3. Sampling at Station 2B, in the back channel of Phillis Islaad, 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 possible taxon and counted. 2 Mean densities (nurrbers/m ) for each taxon were calculated for each of two replicates and three back channel samples. Three species diversity indices were calculated: Shannon-Weiner and 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, channelization, 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 Station 2A where clay and sand predominate. The other distinct habitat, hard substrate, is located at midriver. The hard substrate may have been initially caused by channelization and scoured by river currents and turbulence from commercial boat traffic. Fifty-one macroinvertebrate taxa were identified during the 1982 monitoring program (Table V-B-1). Species composition during 1982 was similar to that l l l 1 l 2f+ f

DUQUESNE LIGHT COMPANY SECTION V 1982 ANNUAL ENVIRONMENTAL REPORT z2= w 4S

2

.1 2 2 3 2 J9

o. r 24 O

9 6 gW@ 9 . t. Q 4 _> e-' E 1. I = w 4 '@ f g . Y,, - I- ,,. z g45 EN T use: e i 2 M

I Mg Z

e {- C h 5 i"; s" 7 >< 3 s 1. -I Im e T B se d# _r I o sj C y Z cv y = N g sf ^ ' ' ~ s : _. _l = ~ 5-c. f:$ ~...

u. <s n+

Q*i 3 ^-7^? m M c'1( ? ;c,,J ~ ; / .m. l- _.e Z E 3 ') W f,x .f _ .e C

1 h

k.Y [ %f w \\ tJ i n w. o a

ZE w

-O< Zz i: yhu$5 j e;2 "#e= = a j <5a>e= 4 .EE<3 E y~gE>$ he s..s<n e o= w A w N*O qooo 25

m mO TAalz v-e-1 d O SYSTENATIC LIST OF MACROINVERTEHRAt?.S COLLECTED IN PREOPERATIONAL AND OPENATIONAL YEARS IN THE OHIO RIVER NEAR BVPS J teopeeatIonal operational 197) 1974 1975 1976 1977 1978 1979 1980 19e1 1992 Porifera sponellla fragills X Oe Cnidaria g Nydrosos y Clavidae 7 O Cordylophora lacustrie X X X X 7 C Hydeidee CO Craspedacuota soweebyi I >C Nydra sp. X X X X X X X I" g mZ Z ITI Platyhelminthes Tricladida X X X X X $r %] h phabdocoola X X X O Z Nemettes X X X X 2y Nematode X X X X X 'I X X X X g Introprocta Urnatella gracills X X X X X X X X X X y >g t-Z Ectoprocta p Pederleella sp. X X g73 4 Paludicella articulata X X 'OO PeL* t i n.s te ll a7p. I N E umatella sp. X H Annelida Oligochaata Aeoloeomatidae X X X X Enchytraeldae X X X X X X X X Maldtdee yph,{ch,aeta g d3 M X I Amphic'iaeta sp. Arcteonalm lomonal X I Auto [4nrus sp. l X X Chaetojaster diaphanus X X lt X X X X X

c. d!*strPltus Dero digitata I

X X D. nlwed X X Dero sp. X X X X X X X X X

(A m TAB 12 V-8-1 (Continued) Preoperational Operational O 2 1971 1974 1975 1976 pH 1978 1979 1980 1981 1982 Mais barbay X N. br e t sche r l I X X X X N. comununis X X N. elicquis X N. variabille X Mais sp. X X X X X X X X X w$ Ophidonaia serpontina X X Paranals frict I X X X X X X X X 7 O Paranals sp. X Pristina omborni X X 7 C P. sina X E CO >@C Pristina sp. X F Slavina ag>endiculata X Stephensoniana trivandrana X X X X X mg Stylaria lacustris X X Z rTI Uncinais uncinata X $p TubtfIcidee W] Autodritus linnobius X X X X X X X X X Q 7 A. gay.et i, X X X X X X X X X Zi t A. pluriseta X X X X X X X 3 Borthrinneurum vejdovskyanum X X X X X X M O Nranchtura sower M X X X X X X X X 7 Ityodt Qua g letont X X X X X X X X X X .p $ Limruzir ilus cer via X X X X X X X X r *> L. cervix (variant) X X X X X X X X Z g L. claparedelanus I X X X X X X X X m4 L. hof f meister 1 X X X X X X X X X X 90 L. spiralis X E X X O L. udekemisnus X X X X X X X X X X N d Lierumtrilus sp. X Pelosoih multisetosus longidentus X X X X

9. m. multisetosus I

X X X X X X X X X Potamothrin mol.tavlensis X X X Peanunorptides curvisetosus X Tuhlfem tuhlfez X X X X X X Unidentified lounature forms: with heir chaetae X X X X X X X X X X without hair chaetae X X X X X X X X X X Luster icu t i<tae X X Hirudinea GIossiphoniidae Helotulot,la elongata X IleIntab:1Ia st a<jnalie X Helndl.lla sp. X E r p etale i I e el.ie Erl=d b lia sp. X M< w>r cor=l. I l a m i cr os t om. x x

(A TTI TAat2 V-B-1 (Continued) Od _ Preoperational___ Operational O 1973 1974 1975 1976 1977 1978 1979 1900 1981 E02 Z Arthropoda Acerina X X X X Ostracode X X X Amphipoda Talltridae Myallela asteca X X 00 Casumaridee N Crangonyu pseudogracille X >g Crangonya sp. X Gammsrue fasciatus X X X g Gasemarus op. X X X X X X X X X yC Decapode Collembolla X p ITI Xphemeroptera g Heptagentidae X X 7g y Stenacron op. X I CD Stenmecca sp. gO Caenidae O Caenis op. X X 7 Tricorythodes sp. X

P"MO Xphemeridae zO X

Ephemera sp. d -** Meglopters Stalls op. X Odonata 7 Comphidae g Dromoanaphus epoliatus I g X Q D, rim,,iggyhus op. X X X X g hus sp. H Trichoptera Psychomyidae X Polycentropus sp. X Mydroporchidae Cheumatopsycp sp. X X X gydgmyche sp. Mydroptitidae X Hydropt @ sp. Oxyethira sp. X 1,eptocer idae O X X X _ccetle sp. Colcoptera X X Hydrophilidae Eloidae X An geonya varlegatus X X X Dibtragdita sp. Heliches sp. X t X X X Stanalmig sp. i

i M M TABIA V-8-1 (Continued) Od Preoperational Operational 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 O2 Diptera Unidentified Diptera X X X X X X Psychodidee I Pericosa sp. X j Psychole op. X Telmatoscopus sp. X Unidentified Psychodidae pupee X Chaobor idea O Chaoborus sp. X X X X X X X y Simulidae 7 O Simillum op. X Z C Chironomidae COC >M Chirenominee X F Chironominae pups X X g Chironomus sp. X X X X X X X X TTI Z Cryptochironomus sp. X X X X X X X X X X 2M Dicrotermilpes nervosus X $F y W Dicrotendiges sp. X X X %] Glyptotenilipes op. X X O 2 Marnischia sp. X X X X X X X X 2 H Micropsectes sp. X g nicrot olives sp. X X 7o Parachironomias sp. X q :p= Polypedilum (s.o.) convictum type X > 'O P. (s.s.) simulans type X F>2 M pedilum np. X X X X y Ither tanytarsus sp. X X X X X m4 Ster *ochirorumus sp. X X X X 'OO Stirtochirorwinus sp. X M tarsus sp. X X X X Ng Tanyl odinae Ablatesmyh sp. X X X Coelotanypus scapularis X X X X X X Protladius (Procladius) X X Procladius op. X X X X X X X X X X Thienemannimp group X X X X X Xawrelimyp sp. X Ortiveladianae X Cricotopus bicinctus X C. (s.s.) trifancia X Cricotopus lisociadius) glwestris Group X C. (I sociadium) sp. X Cricotopus (s.o.) sp. X X X X Euklefferiella sp. X X X X Hydrots,nenus op. X Limrusphyes sp. Maruw w'I.sd i on (s.s.) distinctus X X X X X X Nantwn:l adiuq sp.

F3 1gQgO>2N ~ 4 OCOChZI g T I wgwyzZC'>Fi2dWO2$ 7q*>rp1OO I T 7 1' X XX ,X 2 X X X 8 9 1 XX X 1 9 9 1 0 X X X 8 9 1 lan X X X o 9 X X X i 7 t 9 a 1 rep O 8 XX 1 X XXX X XX I X X X XX XXX 7 9 1 7 X XX XXX X X X X X XX X aen 7 i 9 m 1 u l 6 X X X X X X X XXX f a 7 l 9 u d) 1 c e i n X b u i .5 X r o 7 t C l 9 n a 1 o n e o b C( i X X XXX XX X I o 3 XX t t a 1 r a e 1 B p l o u -V e c r 3 X XX X i b 2 P 7 X X X 1 9 r B o 1 A C T nac irem A e h a t d e r i a o t d N r i e n l a o l h i a p n S U d e s e e t ps s s i r r a p p a s u u g s s n t t e e e a s a l sps .su n i m e so i su p r l u u pu i s t n d a r p p e n .i n .l e d s d e a u a a p s p d a .p a ae a e s r m psd r pd r .se sn l i l i i o o a o t p pad a i a e e s e go e u u e c d c t d i n l h i s oi id n d a e p aa m i i t a r e c t m e t ni n e i i ae dl emu f aof a l t a o r e a aa s od a e a l a es d aa i u eu i iet i i r c e h r o o i ns a goem a deyer aas idt al c di r t an t t e o m p t d d t i e h opae d eiamee ddi bia d ui id e ndo p n t i e i h a a c u u t sa t podd iandodt oir rt v ocb ri a eid t r r e e e i et t ohi e rdoit ip pl r oal pi r es h dna l d l r a a s s s m mi o t cdi diilth oaoye nva ybo ai pion l i OPPPPPSaDP a ii w y c g u a pd cr cP al V crChPS niAE n t i rl p h sapr ri st n l a eo p Un U n D eom puhit ypusA PV lC S U e CDE EMRTSS el a e c Ll C P e R o H wo 4 1 j

SECTION V DUQUESNE LIGHT COMPANY 1982 ANNUAL ENVIRONMENTAL REPORT observed during previous preoperational (1973 through 1975) and operational (1976 through 1982) yeas The macroinvertebrate assemblage during 1982 was composed primarily of borrowing organisms typical of soft unconsolidated substrates. Oligo-chaetes (worms) and chironomid (midge) larvae were abundant (Tables V-B-2, V-B-3, and V-B-4). Common genera of oligochaetes were Limnodrilus, Nais, and Paranais; Common genera of chironomids were Procladius, Coelotanypus, Chrionomus, and Cryptochironomus. The Asiatic clam (Corbicula), which was collected from 1974 through 1978, was also present in the 1981 and 1982 collections. None were collected during 1979 or 1980. No ecologically important additions of species were encountered during 1982 nor were any threatened or endangered species collected. Community Structure and Spatial Distribution Oligochaetes accounted for the highest percentages of the macroinvertebrates at all sampling stations (Table V-B-2). Oligochaetes accounted for a greater percentage of the macroinvertebrate community at Stations 1 and 3 as compared to Stations 2A and 2B where chironomidae and mollusca were usually common. Density and species composition variations observed within the BVPS study area were due primarily to habitat differences and the tendency of certain types of macroinvertebrates (e.g., oligochaetes) to cluster. Overall, abundance and species composition throughout de study area were similar. In general, the density of macroinvertebrates during 1982 was lowest at Station 2A and higher at Stations 1,2B, and 3 where substrates near the shore were composed of soft mud or various combinations of sand and silt. The lower abundance at Station 2A was probably related to substrate conditions (clay and sand) along the north shore of Phillis Island. Comparison of Control and Non-Control Stations No adverse impact to the benthic community was observed during 1982. This conclusion is based on a comparison of data collected at Stations 1 (Control) and 2B 31 ~

9 $a h TABLE V-B-2 2 MEAN NUMBER OF MACROINVERTEBRATES (Number /m ) AND PERCENT COMPOSITION OF OLIGOCHAETA, CHIRONOMIDAE, MOLLUSCA AND OTHER ORGANISMS, 1982 BVPS U oo Station 1 2A 2B 3 2 0C gg g ,f,2 2 gj,2 g 6/s t 6/m g >C May 18 Oligochaeta 3,470 99 1,206 96 2,694 89 3,853 98 $k Chironomidae 30 2 60 2 10 1 5 r-y3 M Mollusca 10 1 47 2 Others 20 1 10 1 225 7 50 1 2h Totals 3,490 100 1,256 100 3,026 100 3,913 99 yn 2 O -t E [$ September 23 2 Oligochaeta 2,757 93 593 34 1,670 50 4,865 90 g< Chironomidae 189 6 356 20 1,277 38 387 7 Q Mollusca 10 1 445 25 343 10 10 1 O Others 376 21 67 2 158 3 Totals 2,956 99 1,770 100 3,357 100 5,420 100 O

=. 1 SECTION V DUQUESNE LIGHT COMPANY 1982 ANNUAL ENVIRONMENTAL REPORT TABLE V-B-3 2 (INDIVIDUALS /M ), MEAN OF TRIPLICATE BENTHIC MACROINVERTEBRATE DENSITIES FOR BACK CHANNEL AND DUPLICATE SAMPLES COLLECTED IN THE MAIN CHANNEL OHIO RIVER, May 18, 1982 BVPS Station Taxa 1 2A 2B 3 Nemertea 10 10 198 30 Nematoda 10 20 10 Bryozoa Urnatella gracilis + Annelida Oligochaeta eggs + + Achaeta 59 I Enchytraeidae 40 Lumbriculidae 10 Chaetogaster diastrophus 7 Nais bretscheri 89 13 Nais sp. 158 810 323 50 Ophidonais serpentina 10 Paranais frici 978 188 310 376 Pristina sigma 20 Stephensoniana trivandrana 10 224 Stylaria lacustris 10 Aulodrilus piqueti 20 A. pluriseta 10 Borthrioneurum veidovskyanum 10 Branchiura sowerbyf 20 7 Ilyodrilus templetoni 70 26 Limnodrilus cervix 20 20 L. cervix (variant) 20 L. claparedeianus 30 39 30 L. hoffmeisteri 118 165 346 L. spiralis 20 30 L. udekemianus 30 26 30 Pelescolex multisetosus 20 40 l Potamothrix moldavensis 20 Immatures w/o capilliform chaetae 1,482 99 1,304 2,164 Immatures w/ capilliform chaetae 454 20 250 598 Arthropoda Gammarus sp. 7 Diptera Chironomus sp. 13 10 Cryptochironomus sp. 7 Procladius sp. 40 1 Orthocladiinae pupae 10 Orthocladius sp. 20 10 Ceratopogonidae Mollusca sphaerium sp. 10 40 Unidentified immature Unionidae 7 Total 3,490 1,256 3,026 3,913 + Indicates organisms present l 33

SECTION V DUQUESNE LIGHT COMPANY 1982 ANNUAL ENVIRONMENTAL REPORT TABLE V-B-4 2 (INDIVIDUALS /M ), MEAN OF TRIPLICATE BENTHIC MACROINVERTEBRATE DENSITIES FOR BACK CHANNEL AND L"JPLICATE SAMPLES COLLECTED IN THE MAIN CHANNEL OHIO RIVER, SEPTEMBER 23, 1982 BVPS Station Taxa 1 2A 2B 3 Platyhelmintnes Tricladia 7 Nemertea 10 Nematoda 10 Bryozoa Urnatella gracilis + + Annelida Oligochaeta eggs + + + Lumbriculidae 10 Dero sp. 20 10 Nais sp. 118 20 50 Paranais frici 7 20 Aulodrilus piqueti 7 Borthrioneurum vejdovskyanum 10 Branchiura sowerbyi 7 Ilyodrilus templetoni 10 Limnodrilus cervix 10 50 L_. claparedeianus 70 L. hoffmeisteri 306 50 72 277 L. spiralis 10 7 L. udekemianus 148 30 13 99 Immature w/o capilliform chaetae 2,203 385 1,472 4,180 Immature w/ capilliform chaetae 40 10 72 99 Hirudinea Helobdella elongata 10 Arthropoda Terrestrial spider 10 Acarina 7 l Amphipoda l Gammarus fasciatus 10 Gammarus sp. 346 53 118 l Trichoptera Oecetis sp. 10 Diptera Chironominae pupae 13 Chironomus sp. 109 108 586 227 Cryptochironomus sp. 10 20 99 40 Harnischia sp. 27 20 Microtendipes sp. 20 26 Polypedilum sp. 13 20 Tanytarsus sp. 20 34 i l I

SECTION Y DUQUESNE LIGHT COMPANY 1982 ANNUAL ENVIRONMENTAL REPORT TABLE V-B-4 (Continued) Station Taxa __1 2A 2B 3 Coelotanypus scapularis 118 10 Procladius sp. 50 30 395 70 Orthocladius sp. 178 Empididae 10 Mollusca corbicula manilensis* 10 sphaerium sp. 10 346 303 10 Unidentified immature Sphaeriidae 89 40 Total 2,956 1,770 3,364 5,420 + Indicates organisms present.

Recent literature relegated all North American Corbicula to Corbicula fluminea.

l { l 35 l

SECTION V DUQUESNE LIGHT COMPANY 1982 ANNUAL ENVIRONMENTAL REPORT (Non-Control) and on analyses of species composition and densities. Data indicate that oligochaetes were usually predominant throughout the study a'rea (Figure V-B-2). The most abundant taxa at Stations 1 and 2B in both May and September were immature tubificids without capilliform chaetae (Tables V-B-3 and V-B-4). In May, the oligochaetes which were common or abundant at both stations were Nais sp., Paranals frici, and Limnodrilus hoffmeisteri. In September, the oligochaetes Limnodrilus hoffmeisteri, L. udekemianus and the midges Chironomus and Procladius were the dominant organisms collected at both stations. Frequently, a greater variety of organisms was found at Station 2B than at Station

1. This usually results in a slightly higher Shannon-Weiner diversity and evenness at Station 2B (Table V-B-5). The mean number of taxa and Shannon-Weiner indices for the back channel were within the range of values observed for other stations in 4

the study area. Differences observed between Station 1 (Control) and 2B (Non-Control) and between other stations could be related to differences in habitat. None of the differences were related to BVPS operation. Comparison of Preoperational and Operational Data Composition, percent occurrence and overall abundance of macroinvertebrates has changed little from preoperational years through the current study year. Oligochaetes have been the predominant macroinvertebrate in the community each year and they ccmprised 81% of the individuals collected in 1982 (Figure V-B-2). A similar oligochaete assemblage has been reported each year. Chironomids and mollusks have composed the remaining fractions of the community each year. The potential nuisance clam, Corbicula, had increased in abundance from 1974 through 1976, but declined in number after 1977. Corbicula were ' presented in 1981 collections and one was co!!ected during 1979 or 1980. One Corbicula was collected in the 1982 benthic surveys. Total macroinvertebrate densities for Station 1 (Control) and 2B (Non-Control) for each year since 1973 are presented in Table V-B-6. Mean densities of macro-l invertebrates have gradually increased from 1973 through 1976 (BVPS Unit I start-l 36

v$I O2 < 0CDC$2r t~p2q OO!m>2<"n n *- i >22C>" r25MO27$2t>F MrmOMt n l J_ 2 8 ~~ 9 1 ~ 1 8 R 9 E 1 V I R O I S H R 0 S O A N 89 R E E A H Y 1 E T L Y N A I N L Y O ,O I T A T I 9 7 N N A 9 U R 1 ME IT P A MO 8 R O D E C 7 N 9 P S A 1 2 O O L B H A T N 7 V N O 7 E I 9 E B T E R 1 AA U E A TD G H R E I S I T EP F F AMR O 8 O HO E 7 E 9 H N R C N T t I 1 O P O O O T GR I G N L S I I I L O R L H O C A P U MD O S C P @g S V T S T B R N I A C A E R E R E Y E N P 4 L 7 9 A N N A 1 E ,O I M T 3 A 5 9 R 7 1 E PO 2 7 E . '- 0 R 2' 7 9 P 1 ~ t 0 0 0 0 0 0 0 O 0 0 M 0 9 7 5 4 3 2 1 1 =O4hw0EWQ 24 6 1; I' i' i' !lI i

i L g rnO -t l 5 TABLE V-B-5 Z MEAN DIVERSITY VALUES EUR BENTHIC MACROINVERTEBRATES COLLECTED IN Tile OHIO RIVER, 1982 BVPS U oo Station Date 1 2A 2B 3 zO 2 C CO May 18 >C F$ No. of Taxa 19 9 20 21 gg Shannon-Weiner Index 2.40 1.73 2.85 2.29 3p Evenness 0.56 0.54 0.66 0.52 c3 w Og m hd September 23 $O Z O No. of Taxa 14 17 22 21 g Shannon-Weiner Index 1.49 3.16 2.72 1.58 %y

U Evenness 0.39 0.77 0.61 0.36 2

y rn "< m j O

O H

9 8

i f TABLE V-B-6 BENTHIC MACROINVERTEBRATE DENSITIES (Number /m ) FOR STATION 1 Q (COfffROL) AND STATION 2B (NON-CONTROL) DURING PREOPERATIONAL AND OPERATIONAL YEARS 2 BVPS Preoperational Years Operational Years 1973 1974 1975 1976 1977 1978 1979 1 2B 1 2B 1 2B 1 2B 1 2B 1 2B 1 2B I wU January >0 2 February 205 0 703 311 358 200 312 1,100 1,499 2,545 Z C CO March 425 457 gh i u April fu Z 2 rn .May 248 508 1,116 2,197 927 3,660 674 848 351 126 1,004 840 $ r-w* y-June 5 40 507 686 OO z-July 653 119 421 410 gn %k August 99 244 143 541 1,017 1,124 851 785 591 3,474 601 1,896 1,185 588 September 175 92 h> j October 256 239 November 149 292 318 263 75 617 388 1,295 108 931 386 1,543 812 806 ON December H 4 Mean 231 206 483 643 546 871 631 1,485 421 1,588 709 1,528 856 673 1

i 4 TABLE V-B-6 (Continued) g rn i O -4 O Preoperational Years Operational Years Z 1973 1974 1975 1980 1981 1982 aC 1 2B 1 2B 1 2B 1 2B 1 2B 1 2B January February 205 0 703 311 1,029 1,296 1 w March >D Z April May 248 508 1,116 2,197 1,041 747 209 456 3,490 3,026 %h m June 5 40 507 686 gZ July 653 119 421 410 $ C 4 Wo l August 99 244 143 541 1,017 1,124 O 2 O September 175 92 1,523 448 2,185 912 2,956 3,364 hn 2Q October 256 239 4 November 149 292 318 263 75 617 h32 W December rn *< 'uOW H Mean 231 206 483 643 546 871 1,198 830 1,197 684 3,223 3,272 O t

SECTION V DUQUESNE LIGHT COMPANY 1982 ANNUAL ENVIRONMENTAL REPORT up) until the current study year,1982. Mean densities were frequently higher in the back channel of Phillis Island (Non-Control) as compared to densities at Station 1 (Control). In years when mean densities were lower at Station 2B than at Station 1'the differences were negligible. These differences could be related to substrate, variability, and randomness of sample grabs. Higher total densitics of macroinvertebrates in the back channel (Station 2B) as compared to Station I was probably due to the morphology of the river. Mud, silt sediments and slow current were predominant at Station 2B creating conditions more favorable for burrowing macroinvertebrates in comparison to Station 1, which has little protection from river currents and turbulence caused commercial boat traffic. Summary and Conclusions 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 macroinvertebrates which require a more stable bottom. At the shoreline stations, Oligochaeta accounted for 81% of the macrobenthos collected, while Mollusca and Chironomidae each accounted for about 9.5% of the total. Community structure has changed little since preoperational years and there was no evidenD that BVPS operations were affecting the benthic community of the Ohio River. I l 41

SECTION V DUQUESNE LIGHT COMPANY 1982 ANNUAL ENVIRONMENTAL REPORT C. PHYTOPLANKTON Objectives Plankton sampling was conducted to determine the condition of the phytoplankton community of the Ohio River in the vicinity of the BVPS and to assess possible environmental impact to the phytoplankton of the operation of Unit 1.- Methods One entrainment sample was collected monthly. Each sample was a one-gallon composite of equal volumes of surface and bottom water taken from one operating intake bay of Unit 1. This one-gallon sample was preserved with Lugol's solution and was used for the analyses of both phytoplankton and zooplankton. In the laboratory, a known aliquot of well-mixed sample was concentrated by settling, the s@ernatant was decanted and the concentrate diluted to a final volume. An aliquot of 0.1 mi from the final concentrate was placed in a Palmer-Maloney cell and examined at 400X magnification. A minimum of 200 cells were identifed and counted in each sample. For each collection date, volume of the final concentrate was adjusted depending on cell density, however the same area of the Palmer cell was examined for all samples. A Hyrax diatom slide was also prepared monthly from each sample. This slide was examined at 1000X magnifica-> i tion in order to make positive identification of the diatom. Densities (cells /ml), Shannon-Weiner and Evenness diversity indices (Pielou 1969), and Richness index (Dahlberg and Odum 1970) were calculated for each rnonthly l sample. f Seasonal Distribution During the first quarter of 1982 few phytoplankton were present in the samples. Total monthly mean densities were between 504 and 1,072 cells /ml (Table V-C-1). Total cell densities of phytoplankton from stations on the Ohio River and in the intake samples have been similar during the past four years. Data from past Annual Environmental Reports also indicate that the species composition has been similar in entrainment samples and those from the Ohio River (DLCo 1980). l 42

TABLE V-C-1 MOMHLY PHYTOPLANKTON GROUP DENSITIES (NUMBER /ML) AND PERCEE COMPOSITION g FROM E W RAINMENT SAMPLES, 1982 d BVPS OZ Group Jan Feb Mar Apr May Jun 9/ml 4 9/mi t 9/ml 4 8/ml 4 6/mi 4 9/ml Chlorophyta 64 6 16 3 28 4 760 11 2,240 34 2,000 28 G Chrysophyta 772 72 448 89 628 90 5,720 79 3,730 57 3,980 56 Z Cyanophyta 212 20 24 5 16 2 40 <1 200 3 200 3 CO g% Cryptophyta 0 0 0 0 0 0 240 3 210 3 260 4 Microflagellates 24 2 12 2 24 3 460 6 120 2 620 9 $rn $r-C Other Groups 0 0 4 <1 0 0 0 0 20 <1 40 <1 y Z -. Total 1,072 100 504 99 696 99 7,220 99 6,520 99 7,100 100 gn zO Group Jul Aug Sep Oct Nov Dec H5 h$ 8/mi n 8/ml 4 9/ml t_ f/mi 4 9/ml 4 t/ml t Z W< Chlorophyta 12,120 69 13,300 64 10,240 50 5,920 50 940 10 540 24 QO Chrysophyta 3,860 22 5,980 29 7,660 37 5060 43 6,740 72 1,180 53 ] Cyanophyta 380 2 660 3 1,380 7 80 <1 480 5 40 2 Cryptophyta 640 4 500 2 600 3 580 1 240 3 40 2 Microflagellates 580 3 400 2 740 3 600 5 920 10 380 17 I Other Groups 40 <1 60 <1 40 <1 0 0 40 <1 30 1 Total 17,620 100 20,900 100 20,660 100 12,240 99 9,360 100 2,220 99 l

SECTION V DUQUESNE LIGHT COMPANY 1982 ANNUAL ENVIRONMENTAL REPORT Therefore, samples collected from the intake bays should provide an adequate characterization of the phytoplankton community in the Ohio River. Total mean densities increased in April to 7,220 cells /ml, which represented the spring peak in phytoplankton abundance (Table V-C-1). Populations decreased slightly in May and June and then doubled in July. The annual maximum occurred in August and September (20,660-20,900 cells /ml) (Figure V-C-1). Densities decreased af ter September to a low of 2,210 cells /ml observed in December (Figure V-C-2). The two-peaked cycle of phytoplankton density is common in many large rivers and lakes in north temperate climates (Hutchinson 1967, Hynes 1970). Diatoms (Chrysophyta) and green algae (Chlorophyta) were usually the most abundant groups of the phytoplankton during 1982 (Table V-C-1 and Figure V-C-2). The group microflagellates was common in March, November, and December, making up from 10 to 24% of the total numbers observed in those months. Blue-greens (Cyanophyta) were common (20%) during January (Table V-C-1). The overall increase of phytoplankton densities during the year was probably due to decreased flow and turbidity which were caused by below average precipitation during 1982. Diversity indices for the phytoplankton during 1982 are presented in Table V-C-2. 5hannon-Weiner indices ranged from 1.88 to 4.%, evenness values from 0.42 to 0.90, and richness values from 2.36 to 7.17. High diversity values occurred in 11 months. The lowest value for Shannon-Weiner Index and lowest number of species occurred in April when small centric diatoms were predominant during the spring peak. Highest number of taxa (66) occurred in July. Phytoplankton communities were generally dominated by different taxa each seascn. Most abundant taxa during winter (January through March) were Chlorophyta I, Navicula spp., and Nitzschia spp.; the two latter were chrysophyte diatoms (Table V-C-3). The group Chlorophyta I were small (5 to 15 ), unicellular, green algae which were probably separated from a colony and were very difficult to positively identify. During the spring, small centric diatoms were 44 l

SECTION V DUQUESNE LIGHT COMPANY 1982 ANNUAL ENVIRONMENTAL REPORT 1974 Jan-M, Aug-OnL a1974&75.Nov -Det 1975

*- 1976,1977.197E 193. 6 sen 1 SS1 &Aeureuse 1982 Scase Change moon -

/* l '\\ tacco - s f g s k \\ l \\ l 1 d\\ l 1 I\\\\

\\

.I \\ \\\\ l '\\ \\sT .aco - t / \\ \\. i 5 l o i y \\\\ s-- i I \\\\ / i l \\'i p5 1 I t

i I

\\ I \\\\ l \\\\ tooo - I \\e m --__-_ _3 .e oI 7 / / J ~- \\ / \\ / / 290 = ./ .s 0 lJ lF lM lA lM l lJ lA l l0 lN fD l 3 J FIGURE V-C-1 SEASONAL PA1 TERN OF PHYTOPLANKTON DENSITIES IN THE OHIO RIVER DURING PREOPERATIONAL (1974-1975) AND OPERATIONAL (1976-1982) YEARS EVPS 45

SECTION V DUQUESNE LIGHT COMPANY 1982 ANNUAL ENVIRONMENTAL REPORT 14.ED = CMLOAOpwYTA CHATSOPHYTA CTassos=WTA W CNYPTOPwYTA 4 entm0RAGEMATES ita. i i / \\ g / \\ f / \\ / a / \\ /gi / \\ / ) l \\ / q ,/\\ / \\ ' i \\ i i s I \\ / I \\ / s I \\ / i l \\ _. ] \\ \\'s'/ ~ \\

- - - ~

l i l + \\ I \\ I 1 m-l \\ I l l \\ l \\ l I, I m-I J 7 - -.sN/.N x l *I-l= 1 I'l'I I^l I'l' I^l = 1982 FIGURE V-C-2 PHYTOPLANKTON GROUP DENSmES FOR ENTRAINMENT SAMPLES.1982 BVPS 46

mo ~! O TABLE V-C-2 Z PHYTOPLANK1ON DIVERSITY INDICES BY MONTH FOR EffrRAINMENT SAMPLES, 1982 BVPS Date Jan Feb Mar Apr May _Jun N i No. of Species 51 41 46 22 55 45 2 0 2 C hb Shannon-Weiner Index 4.68 4.80 4.96 1.88 4.79 4.33 ca Evenness 0.82 0.90 0.90 0.42 0.83 0.79 Qy $r a Richness 7.17 6.43 6.88 2.36 6.15 4.96 m3 Ox 4 2 -t C Date Jul Aug Sep Oct Nov Dec it gh .-t E No. of Species 66 54 53 35 50 49 47 yj 2 Shannon-Weiner Index 4.72 4.54 4.22 3.97 4.09 4.66 4.30 W< m" mO Evenness 0.78 0.79 0.74 0.77 0.72 0.83 0.77 N -t Richness 6.65 5.33 5.23 3.61 5.36 6.23 5.53 Data represents single entrainment sample collected monthly. 2 em i

1 TABLE V-C-3 ' (n ,i i DENSITIES (NLMBER/ML) OF MOST ABUNDANT PHYTOPLANKTON TAXA (FIFTEEN MOST ABtP' DANT ON ANY DATE) o COLLECTED FROM ENFRAINMElfr SAMPLES d JANUARY THROUGH DECEMBER 1982 BVPS 4 Taxa Jan Feb Mar g My Jun Jul A_ug Sep Oct Nov Dec CYANOPHYTA i Aphanocapsa delicatissima 640 G l Schizothrix calcicola 212 24 16 40 170 200 240 120 480 40 0> 1 CHLOROPHYTA hC l Ankistrodessus convolutus 4 20 370 120 1.380 120 460 300 220 50 CO %h l Ankistrodessus falcatus 12 8 120 240 180 360 100 260 80 40 20 ~ Chlamydomonas globosa 4 40 10 80 240 200 20 120 40 10 rn$ Coelastrum microporum 160 720 160 Z rn Coronastrum aestivale 240 640 $r-Crucigenia apiculata 640 O Crucigenia quadrata 160 2q Dictyosphaerium pulchelium 320 1940 360 %n Kirchneriella obesa 60 160 1160 2 O yh j Micractinin pusillum 220 190 220 2760 1700 1500 500 80 Scenedessus acuminatus 30 80 420 240 100 r> Scenedesmus armatus 160 120 80 320 c2 l Scenedessus bicellularis 8 220 80 2240 940 2080 2520 40 100 i Scenedessus dimorphus 160 O Scenedesmus quadricauda 8 720 360 560 1600 1420 440 80 80 d Schroederia setigera 40 20 80 Selenastrum miniatum 40 580 1480 380 720 Selenastrum westii 160 1700 1040 640 '20 16 16 160 60 160 320 260 240 400 ,140 60 { Chlorophyta I j CHRYSOPHYTA Achnanthes minutissima 20 20 32 40 60 40 40 30 i Asterionella formosa 76 220 620 380 40 20 200 60 50 Cymbella ventricosa 16 16 16 20 40 60 10 Diatoma vulgare 32 16 30 20 l Fragilaria crotonensis 12 8 8 440 20 180 40 40 i

i i TABLE V-C-3 (Continued) I $n Taxa Jan Feb Mar Ape May Jun Jul M S_ep Oct Nov _Dec d r O ,) Fragilaria vaucheriae 20 4 32 20 60 40 40 40 80 10 25 i Gomphonema olivaceum 8 12 20 20 20 60 Gomphonema parvulum 12 24 32 40 20 20 60 10 Helosira ambigua 12 32 4 100 80 260 460 1080 260 Melosira distans 24 20 560 520 360 80 280 150 Melostra granulata 16 20 60 380 760 2620 5660 1920 2600 140 g Melosira varians 72 40 28 160 40 120 20 Microsiphona potamos 40 120 860 220 480 180 20 ), D Z Navicula cryptocephala 88 44 76 220 80 60 20 200 60 [fh Navicula viridula 32 52 68 60 190 100 20 20 60 40 10 300 10 >. C Nitzschia agnewit Nitzschia capite11ata 4 12 12 40 160 20 20 100 10 F$ Nitzschia dissipata 16 20 28 20 30 40 20 20 160 10 Nitzschia holsetica 4 180 480 100

$r-4.

Nitzschia kutzingiana 28 8 20 30 20 20 20 10 N5 h] { Nitzschia palea 32 32 36 80 160 60 40 40 40 120 40 f Synedra filiformis 48 8 4 60 450 140 40 80 40 100 40 3:gjh Synedra ulna 36 8 28 180 120 40 60 1 Small centrics 56 16 20 5200 590 2040 1400 860 920 1360 940 150 H 3: ?$ l yZ .l CRYPTOPHYTA y4 1 Rhodomonas minuta 240 150 180 340 390 340 500 180 30 O l MICROFLAGELLATES 24 12 24 460 120 620 580 400 740 600 920 380 Ng Total Phytoplankton 1072 504 696 7220 6520 7100 17620 20500 20660 12240 9360 2220 Total of most abundant Taxa 952 408 548 7140 5760 6520 15220 19020 18360 11820 8620 1810 Percent composition of most 89 81 79 99 88 92 86 91 89 97 92 82 abundant Phytoplankton l } }

SECTION V DUQUESNE LIGHT COMPANY 1982 ANNUAL ENVIRONMENTAL REPORT dominant in April and June when the spring peak occurred. Small centric diatoms were present in all phytoplankton samples, and include several small(4 to 12 dia.) species. Positive species identification was not possible during quantitative analysis at 400X magnification. Burn mount analysis at 1000X magnification C. revealed the group "small centrics" included primarily Cyclotella atomus, pseudostelligera, C_. meneghiniana, Stephanodiscus hantzschii, and S_. astraea. The most abundant taxon in July was Scenedermus bicellularis (green algae). Dictyosphaerium pulchellum (green algae) and Melosira granulata (diatom) were co-dominant in August. Scenedesmus bicellularis and Melosira granulata were the dominant taxa in September. Melosira granulata was the most abundant taxon in October and November. The most abundant taxa in December were microflagel-lates and Melosira ambigua. 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 1982. Comparison of Preoperation and Operational Data The seasonal successim of phytoplankton varied from year to year, but in general the phytoplankton taxa has remained generally consistent. Phytoplankton com-munities 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 exhibited a bimodal pattern of annual abundance. During the preoperational year 1974, total densities peaked in August and October while in operational years of 1976 through 1979, mean peak densities occurred in June and September (DLCo'1980). Total phytoplankton densities also displayed a bimodal pattern in 1982 (Figure V-C-2). In general, the phytoplankton community in 1982 was similar to those of pre-operational and operational years. No major change in species composition or community structure was observed during 1982. The small differences in the 1 50

SECTION V. DUQUESNE LIGHT COMPANY 1982 ANNUAL ENVIRONMENTAL REPORT phytoplankton community between 1982 and the previous years are believed to be due to natural fluctuations and were not a result of BVPS operations. Yearly mean Shannon-Weiner diversity indices from 1974 through 1982 were similar, ranging from a low of 3.57 in 1980 to a maximum of 4.36 in 1975 (Table V-C-4). Evenness values were also similar, except during 1973 and 1974 when values were lower. From 1975 through 1982, evenness ranged from 0.44 to 0.90. 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 47 in 1982. The highest number of taxa (66 in July) ever observed in phytoplankton studies at BVPS occurred during the operational year 1982. Summary and Conclusions The phytoplankton community of the Ohio River near BVPS exhibited a seasonal 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 were as high or higher than those previously observed near BVPS. This was probably due to decreased precipitation and favorable weather conditions that occurred during 1982. 5L

Theta V-C-4 gm FMT10PLAIIRToM DIVERSITT ' INDICES iBEAN or AIL SNet281973 TO 1902) Q New copeentANo root. or nos onto alven a mVPG

O

.Z 1971 Jan Feb Mer _ Ape _ Mar Jun . Jet Aue Sep oct noe _ Doc, Is No. of Species 1 2 13 24 27 20 30 24 17 16 19 shonnon Inden 1.55 0.54 50 0.63 1.64 2.30 3.55 3.72 No 3.37 3.25 3.27 2.30 Evennese 0.33 0.15 Seeple G.Il 0.25 0.35 0.55 0.52 semple 0.50 0.54 0.53 0.30 Richnese 1.24 0.29 1.50 2.63 3.17 3.61 3.46 3.24 2.09 2.00 2.40 1974 o-. me. of Species 12 0 !? 22 44 46 47 60 34 47 34 co theenon Indeu 4 94 2.23 3.10 3.50 4.09

4. 4'1 4.03 4.25 3.05 5.02 3.03 N

l

8eeP a swenese 0.55 0.46 0.57 f.50 0.62 0.62 0.54 0.55 0.54 0.50 0.56

)U Richnese 2.55 1.02 3.05 3.74 5.56 5.45 5.46 6.49 4.77 5.44 4.43 ZZ C 11'S CO C >M No. of spectee 52 34 43 32 40 40 i l h Seep a F shannon Indes 4.53 4.22 4.37 4.22 4.40 4.36 g Evennese 0.00 0.03 0.05 0.07 e.05 0.03 m7 michnese 5.57 3.96 4.09 3.92 6.19 4.91 7g W O 3'.19 O Z N No. of spectee 31 35 31 30 47 49 46 43 30 33 35 30 Shannon Indes 3.90 4.34 3.90 4.25 4.14 4.27 4.20 4.30 3.93 4.16 4.24 4.45 4 7 d Evennese 0.00 0.05 0.70 0.01 0.75 0.76 0.70 0.00 0.75 0.03 0.03 0.05 0.00 7 alchness 5.15 5.09 4.92 4.70 4.60 4.79 4.72 4.34 3.05 4.17 4.95 5.79 4.03 gQ Z O lEl H E' No. of Species 20 20 31 24 36 30 44 39 37 32 33 27 32 > 'O Shannon Indes 1.96 3.11 3.00 2.70 4.14 3.52 4.36 4.26 4.29 3.92 4.12 4.00 3.64 F> Evennese 0.44 0.70 0.61 0.60 0.00 0.12 0.00 0.01 0.02 0.70 0.02 0.03 0.7) Z y Richnese 3.14 4.57 4.44 2.95 3.53 2.77 4.63 4.26 3.07 3.90 4.10 3.72 3.04 mM 'I3 OW H i i o 0 (

l t l l TAtl2 V4*-4 (contInuedI y [71O -t y Jan rob Mar. Apr May Jun Jul ig Sep Oct Nov Dec It l No. of Species 37 29 32 42

0 42 34 37 35 37 34 32 3*.

Z Ohannon Indes 4.00 3.60 3.77 4.67 3.30 4.16 3.95 4.17 3.01 3.99 3.00 4.44 3.99 4 Evennvae 0.70 0.76 0.76 0.07 0.69 0.70 0.77 0.00 0.76 0.77 0.76 0.90 0.70 0lehneme *I I M Wo. of spectee le 16 19 36 34 27 34 24 29 25 20 30 27 shannon Indes 3.49 3.36 3.79 3.22 3.70 3.04 4.10 3.00 4.12 4.07 3.60 4.32 3.00 Evennese 0.04 0.02 0.00 0.62 0.74 0.01 0.00 0.04 0.94 0.00 0.77 0.03 0.01 e Sichnese 2.97 2.64 3.36 4.69 4.00 2.90 3.46 2.72 3.26 3.52 3.51 5.19 3.54 00 h3

> u 1980 z

No. of Species 20 le 24 25 21 le 30 16 32 24 33 37 " 24 2g Shannon Indem 3.00 2.64 3.70 3.02 3.20 3.26 3.61 3.45 4.It 3.54 3.73 4.56 3.57 Cg Evennese 0.01 0.64 0.03 0.02 0.75 0.70 0.74 0.06 0.02 0.77 0.74 0.07 0.70 g Sichnese 4.07 2.65 3.49 4.02 2.50 2.30 2.90 1.94 3.33 2.59 4.01 5.40, 3.15 g M lte t mZ 2M Mo. of spectee '22 35 37 39 34 33 33 51 35 27 40 3. ~ 35 shannon Indes 3.92 4.39 4.39 2.29 3.66 4.54 4.13 4.59 4.07 3.90 4.00 4.32 3.95 I r** %] U1 Evennese 0.00 0.05 0.04 0.43 0.72 0.90 0.02 0.01 0.79 0.02' O.75 0.06 0.79 La3 Sichness . 3.91 5.04 6.10 4.50 3.69 4.61 3.13 5.76 3.05 3.56 5.00 4.55 4.60 QZ4 E K no. of species ~51 41 46 22 55 45 46 54 53 35 50 40 47 M shannon Indes 4.60 4.00 4.96 1.00 6.79 4.33 4.72 4.54 4.22 3.97 4.09 4.66 4.30 2 Evennese 0.02 0.90 0.90 0.42 4.03 0.79 0.70 0.79 0.74 0.77 0.72 0.03 0.77 d5 Sichneme 7.17 6.41 6.00 2.36 6.15 4.96 6.65 5.33 5.23 3.61 5.36 6.23 5.53 >T t- > g(. no date o 0....ep.e . ein,lo en...In n. pl.. collec, o_,hlf. g a ~4

SECTION V DUQUESNE LIGHT COMPANY 1982 ANNUAL ENVIRONMENTAL REPORT i l D. ZOOPLANKTON Obiectives Plankton sampling was conducted to determine the condition of the zooplankton community of the Ohio River in the vicinity of the BVPS and to assess possible environmental impact to the zooplankton due to the operation of Unit 1. Methods The zooplankton analysis was performed on one liter aliquots taken from the preserved one-gallon samples obtained from the intake bay of Unit 1 (see Phytoplankton methods, above). One liter samples were filtered through a 35 micron (.035 mm) mesh screen. The portion retained was washed into a graduated cylinder and allowed to settle for a minimum of 24 hr. The supernatent was withdrawn until 10 ml of concentrate remained. One ml of this thoroughly mixed concentrate was placed in a Sedgwick Raf ter cell and examined at 100X magnifi-cation. All zooplankters within the cell were identified to the lowest practicable taxon and counted. Total density (individuals / liter), Shannon-Weiner and Evenness diversity indices (Pielou 1969), and Richness index (Dahlberg and Odum 1970) were calculated based upon one sample which was a composite from a surface and a bottom water sample. Seasonal Distribution The zooplankton community of a river system is typically com' posed of protozoans and rotifers (Hynes 1970, Winner 1975). The zooplankton community of the Ohio River near BVPS during preoperational and operational monitoring years was composed primarily of protozoans and rotifers. 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 1982, protozoans and rotifers accounted for 98% or more of all zooplankton on all sampling dates (Table V-D-1). Total organism densities during the winter 54

l !$odo TABLE V-D-1 2 MOffrHLY ZOOPLANKTON GROUP DENSITIES (Number / liter) AND PERCENT COMPOSITION FROM ENTRAItetENT SAMPLES,1982 BVPS G O Jan Feb Mar Apr May Jun 2 O Group 8/l t 9/1 4 8/l 1 t/1 4 6/1 ~ ~ g/l 4 t >C Protozoa 350 88 310 97 310 91 820 93 1300 28 870 85 F@ mz hh Rotifera 50 12 10 3 30 9 50 6 3340 72 130 13 (n

o g

@Z Crustacea 0 0 0 0 0 0 10 1 10 <1 20 2 h Total 400 100 320 100 340 100 880 100 4650 100 1020 100 -1 E > 'c r>2

U <

Jul Aug Sep Oct Nov Dec m* ] Group 8/1 f/1 4 3/1 _0/1 g/l 4 g/l t 50 d Protozoa 2360 42 3560 69 1590 29 4850 76 2060 90 980 95 Rotifera 3250 58 1550 30 3840 70 1520 24 240 10 40 4 Crustacea 20 <1 60 1 90 1 40 <1 0 0 10 1 Total 5630 100 5170 100 5520 100 6410 100 2300 100 1030 100

SECTION V DUQUESNE LIGHT COMPANY 1982 ANNUAL ENVIRONMENTAL REPORT and early spring (January through March) were less than 401/ liter. Lowest total density during 1982 was 320/ liter which occurred in February (Figure V-D-1, Table V-D-1). Total organism densities increased slightly in April. Tne sprhg peak (4,650/ liter) occurred in May. The annual peak density (6,410/ liter) ocurred in October. Zooplankton popuhtions 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 summer or early fall (Table V-D-2; Figure V-D-2). Lower than average precipitation during 1982 allowed zooplankton populations to maintain high densities during the summer and early autumn. 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). Zooplankton densities in winter are low due primarily to low water temperatures and limited food availability (Winner 1975). In the spring, food availability and water temperatures increase which stimulate growth and reproduction. Zooplankton populations decrease during the fall and winter from the summer maximum because optimum conditions for growth and reproduction decrease during this period. Densities of protozoans during January through March of 1982 were between 310 and 350/ liter (Table V-D-1). Protozoans gradually increased in April and May. The densities peaked in September at 4,850/ liter. Protozoans progressively decreased in October, November and December to densities of 980/ liter. The most common protozoan during 1982 was Vorticella which dominated the protozoan assemblage during seven months (Table V-D-3). The most abundant protozoans in the other months were Codonella cratera (March, May, June, and July) and Cyphodera ampulla (November). These taxa have been a main part of the protozoan assemblage of the Ohio River near BVPS since 1972. The rotifer assemblage in 1982 (Figure V-D-2) displayed a typical pattern of rotifer populations in temperate inland waters (Hutchinson 1967). Rotifer densities increased from a minimum of 10/ liter in February to a maximum of 3,840/ liter 56 -,_,77- ,p,e .-m, ---...,__m e,--- 3--,-.,,.w,_o ,___r.

SECTION V DUQUESNE LIGHT COMPANY 1982 ANNUAL ENVIRONMENTAL REPORT 1974 asme Aes-Out a 1ete & M Inse.0ma 1975

==

194197719M ISM 1981L I301 W 1982 Sease Chesgo esse sos. -

l

a. =

s = ' ^./ \\'/s

s I

\\ .// v \\ s ./ / \\. !t / \\.\\ 's\\ \\l .1 1 - 1 l } \\ \\~' l l \\- l \\ I ago ./ r lm l0 l J f M a M J J A 8 0 PIGURE V-0-1 SEASONAL PATTERNS OF ZOOPt.ANETON DENSITIES IN THE ONeO RivtR DURING PREOPERATIONAL (1974-1975) AMO CPERAT1CNAL(1976-19821 YEARE SVP5 57

a Th012 V + 2 e (/l 8EAM SOOPIANETON DEN 0!T100 (Number /18ter) BT MODrtW FROM 1973 THROUGt 1902, ORIO RITOR AND DVPG Total Jan Feb Mar Apr May Jun g .Aug Gep Oct Noe M sooeteation O 1973 50 90 154 500 945 1,341 425 100 07 2 1974 70 54 96 110 299 625 4,407 3,740 1,120 4,321 4 1975 4,426 3,621 1.591 2,491 423 1976 327 311 347 10,940 2,516 5,711 3,344 3,294 3,521 Sie 446 577 1977 147 396 264 393 5,153 4,120 1,143 1,503 3.401 553 934 404 1970 31 30 20 35 403 1.061 1.526 000 1,00 3 435 297 60 1979 357 94 220 514 2,226 599 2,672 4,230 950 370 542 550 1900 320 265 309 280 530 420 3,110 490 2,020 3.020 1.030 700 l 1901 190 360 220 500 040 310 3,000 1,940 4.490 1,050 760 370 1982 400 320 340 000 4,650 1,020 5,630 5.170 5,520 6,410 2,300 1,0 30 Oo Protosos h) 1973 45 63 02 100 56 331 346 135 50 >U 1974 50 42 72 91 130 409 1,690 116 1,006 4,195 2 1975 035 3,295 1,141 2,239 452 2 C 1976 270 274 305 10,774 1,690 6 1,903 1,676 000 425 396 492 gO 1977 135 34 5 236 312 4,509 2,040 000 947 2,529 401 025 344 yC 1970 10 14 14 27 332 1,360 407 315 256 222 227 26 y ITI 1979 312 64 let 300 2,052 459 340 712 609 326 454 320 M l 1990 244 250 354 190 390 370 1,620 300 lette 3.010 760 840 M2 1981 130 310 100 510 400 230 730 1,250 4.020 1,500 550 330 2M 1902 350 310 310 0 20 1.300 070 2,360 3,560 1,590 4,550 2.060 900 $t* m mottfore %] m 1973 5 25 64 300 059 1,001 75 43 27 O 7 1974 24 12 22 24 155 213 2,703 2.939 115 120 Zq 1975 3,339 313 444 250 164 g 1976 40 36 30 169 000 4,064 1,390 1,597 2,643 09 40 70 mO 1977 12 31 26 76 631 1,904 320 539 1.022 147 100 136 Z O 1970 29 33 15 14 16 24 72 61 67 47 22 40 qg 1979 44 33 37 151 172 135 2,255 3,402 324 42 06 220 y og 1900 72 14 33 90 140 50 1,470 110 790 700 260 50 ga > 1901 40 50 40 70 340 00 2,000 630 470 260 210 40 Z 1902 50 10 30 50 3,340 130 3,250 1,550 3,040 1,520 240 40 Crustacee g< IUI 1 1 3 12 29 9 3 2 2 1974 2 2 3 3 6 3 14 95 7 6 p 1975 el 12 6 3 6 1976 2 1 5 4 to let 43 1 69 3 2 0 q 1977 2 5 11 96 7 17 50 5 1 6 1970 4 6 3 2 6 40 12 27 75 9 5 5 1979 1 0 3 3 2 4 70 44 17 1 .2 2 1900 3 1 1 0 0 0 20 0 50 30 le 10 1981 20 0 0 0 20 0 270 60 0 10 0 0 1902 0 0 0 10 to 20 20 60 90 40 0 10 'No semple COIIect90. ) J l a

SECTION V DUQUESNE LIGHT COMPANY 1982 ANNUAL ENVIRONMENTAL REPORT o 40TwsmA l i l\\ l\\ l I l(i l I J l 1 I\\ l\\ l'r i Il \\ l \\ e I t g t I -- lt\\ lg l \\ I 2 I i g i g l I I I \\ l t ii I i i ', Il \\ l I I t t i I I \\ 'l n l I \\ \\ l 1 i I l l i g I l \\ l I \\ \\ \\ I \\ \\ I \\ \\ l t II \\ I I' \\ l l I! \\ .co - I \\I \\ I \\ \\ l \\l 's ~ N i Ia 1 I-l^l Ie Ia 1 I=la 1-l=l 29 2 RGURE V-0-2 ZOOPLMp(TON GROUP DENSmES FOR ENTRAINMENT SAMPLES,1962 59 I l

1 i i TABLE V-D-3 (A DENSITIES (NUMBER / LITER) OF MOST ABUNDANT ZOOPLANKTON TAXA (GREATER TRAN 24 ON ANY DATE) "g COLLECTED FROM ENTRAINMENT SAMPLES dO JANUARY THROUGH DECEMBER 1982 BVPS Taxa Jan Feb Mar AE g Jun Jul A3 Sep Oct Nov Dec PRO 1920h 120 10 G Acropisthium sp. 20 30 30 50 10 10 100 30 0 Arcella sp. 40 20 10 150 60 120 10 Z@ Askenasia sp. Centropyxis sp. 80 20 70 40 60 20 10 140 20 170 70 10 cc l Chlamydophora sp. ph-- i condone 11a cratera 40 60 90 10 680 350 470 620 280 60 380 170 10 20 30 10 m$ Colpidlum sp. Cyclotrichium sp. 10 30 20 20 10 10 7m Cyphoderia ampulla 50 20 10 10 60 10 10 10 500 50 $ r-y3 Difflugia acuminata 30 20 50 10 10 20 30 20 60 40 o Difflugia op. 30 10 10 40 80 2h gn 10 10 20 10 20 Euglypha compressa Paramecium sp. 10 2 O Strobilidium gyrans 50 40 430 250 100 290 -i 5 Strobilidium sp. 10 160 10 80 40 480 10 390 260 200 h$ Tintinnidium fluviatile 10 80 80 370 140 380 60 W Z Q< Turaniella vitrea 110 400 100 80 70 vortice11a sp. 100 170 70 200 100 220 80 790 300 2880 240 310 O 150 10 30 260 120 210 250 20 30 I Holophyrid ciliate l Ciliate unidentified 10 10 10 30 10 110 100 40 110 120 30 ROh'IFERA Branchionus calyciflours 40 270 40 20 250 320 40 conochilus unicornis Keratella cochlearis 30 10 2540 30 690 370 790 910 160 i Polyarthra dolichoptera 10 600 20 260 220 1460 270 40 30 i 30 310 290 20 Polyarthra vulgaris

TABLE V-D-3 (Continued) $o Taxa Jan Feb Mar Ap May Jun Jul A_q Sy Oct Nov Dec z Synchaeta sp. 10 30 990 50 570 150 20 Trichocerca pusilla 20 20 930 160 210 50 Rotifers-unidentified 20 10 20 10 50 20 10 60 30 10 20 10 Total Zooplankton 400 320 340 880 4650 1020 5630 5170 5520 6410 2300 1030 Total of most abundant 400 320 340 780 4550 970 5320 4630 5010 6070 2160 1010 g zooplankton w gg Percentage corposition of 100 100 100 89 98 95 94 90 91 95 94 98 most abundant zooplankton zC CO yC r*@ rn z z rn b C 5 o O 2 e z _g e O 2 O i --I E >T t- > z yrn 4 mON 1 -i 1 I 1

SECTION V DUQUESNE LIGHT COMPANY ~ 1982 ANNUAL ENVIRONMENTAL REPORT in September (Table V-D-1). Rotifer populations progressively decreased after July to densities of 40/ liter in December. Except during May, July, and September when rotifers were dominant, rotifers were always the second most abundant group, during 1982. Keratella cochlearit, Polyarthra spp. and Synchaeta were the most' abundant rotifers during most of the year (Table V-D-3). Trichocerca pusilh, Keratella, and Synchaeta were abundant in July. pi Crustacean densities were low (0 to 20/ liter) from Januhry through July (Table ( t I V-D-1). Densities of crustaceans during 1982 reached chei / peak of 90/ liter in October through September (Figure V-D-2). Populations decreased - fro. m. r December. Crustacean densities never exceeded protozoah or rotifer densities and j s i constituted from 0 to 2% of the total zooplankton ' density sach rr.onth (Tabl,e i V-D-1). Copepod nauptli were the most numerous crustaceans dUring 1982. Other crustacean taxa occasionally present in low numbers were cyclo'pold dopepoditbs, ') 6 Cyclops bicuspidatus thomasi, and Bosmina longirostris., Crustacean populations t i did not develop high densities despite favorable river conditicas of leu flow due to _ /. /'/i. t below average precipit: tion during 1982. Crustaceans e.e rarely, n.:merous in the - d 1 1 i open waters of rivers e vf many are eliminated by silt and turbahnt water (Hynes , i j 1970). ,f 1-i Highest Shannon-Weiner diversity value was 4.28 which occu,rred'2a A'isgust whereas 6 the maximum number of species (40) occurred in jSepternber (Table V-D-4). 'i Evenness ranged from 0.52 in May to 0.90 in January. R!chness varied from 1.39 in / r sr l t ) February to a maximum of 4.53 in September. The nunker o3' specier ranged 4 rom g f s s l l 9 in February to 40 in September. Low diversity irdices% F5bruark reflect low it \\ 'f g l number of species and abundance of only Vorticq.; i s t 'J v j: '/ \\ t Comparison of Control and Non-Centrol Transecu 3 l l Zooplankton samples were not collected irem s'thtions on the' Ohio River after April 1,1980; therefore, comparison of Carrol and Non-Control Transects was not, S possible. s f I b \\ \\ 'T; j 62 e i I '\\ A s n __._..__.,,__,..._,___,,j,,,,

m s m% s / e mO ~ ~, 1. O z TABLE V-D-4 ~ 200 PLANKTON DIVERSITY INDICES BY MONTH FOR ENTRAINMENT SAMPLES,1982 4 BVPS G oo Date Jan Feb Mar Apr M Jun z o No. of Species 10 9 11 22 27 20 2 C CD >@C Shannon-Neiner Index 2.99 2.22 2.89 3.59 2.46 3.20 t-rn z f* EvennesJ 0.90 0.70 0.83 0.80 0.52 0.74 lc 3 O-w Richness 1.50 1.39 1.72 3.10 3.08 2.74 2 -gI 3: rn O h Date Jul Aug Sep_ Oct Nov_ Dec_ x > 'u No. of Species 37 36 40 34 19 17 24 rn -< Shanran-Weiner Index 3.82 4.28 3.86 3.09 3.54 3.14 3.26 ]

0 Evenness 0.73 0.83 0.72 0.61 0.83 0.77 0.75 "i

Richness 4.17 4.09 4.53 3.76 2.32 2.31 2.89

a a: a .a SECTION Y DUQUESNE LIGHT COMPANY 1982 ANNUAL ENVIRONMENTAL REPORT Comparison of Preoperational and Operational Data Population dynamics of the zooplankton community during the seasons of pre-operational and operational years are displayed in Figure V-D-1. Total zooplank-ton densities were lowest in winter, usually greatest in summer and transitional in spring and autumn. This pattern in the Ohio River sometimes varies from year to year which is normal for zooplankton populations in other river habitats. Hynes (1970) concluded that the zooplankton community of rivers is inherently unstable and subject to constant change due to variations of temperature, spates, current, turbidity and food source. Total densities of zooplankton during 1982 were frequently higher than those of preoperational years (1973 threugh 1975) and operational years (1976 through 1981) (Figure V-D-1). This was due primarily to reduced river flow and below average precipitation which occurred during 1982. ~ 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 ten years have been Vorticella, Codone!!a, Difflugia, Strombilidium, Cyclotrichium, Strombilidium, Arcella and Centropyxis. The most numerous and frequently occurring rotifers have been Keratella, Polyarthra, Synchaeta, Branchionus and Trichocerca. Copepod nauplii have been the on!y crustacean taxa found consistently. Community structure, as compared by diversity indices, has been similar during the past ten years (Table V-D-5). In previous years low diversity indices and number of species occurred in winter; high diversities and number of species usually occurred in late spring and summer. in 1982, the diversity indices and species numbers were relatively low in January i and March which was typical for months of winter end early spring. Shannon-Weiner diversity indices in 1982 ranged from 2.22 to 4.28 and were somewhat higher than the range of 1.80 to 3.28 that occurred during preoperational years from 1973 to 1975. The variation in evenness during 1982 (0.52 to 0.90) was at the upper portion of the range reported from 1973 to 1981 (0.21 to 0.93). l 64 l

f SECTION y DUQUESNE LIGHT COMPANY 1982 ANNUAL ENVIRONMENTAL REPORT - 2. - s--

* *s

- ~ s. g..

s

~..-

5

) =~. g~. 3-.

8. s.,

8..

8.,: ~s e.s.

-~. I .s :- iss .8. - - -.e s.-

a.

~~. n-.

3.. -

n.

, 3.. ~~. s . -.s ..s .~. ~~. ~~.

8

~ ~ s I ~.. 8n.

n. -

n. n. 8n.

.n s 8 ~ n. 8.. ss s.-, - ~.s aR .s

n..,

~~. .~. s ~ o

~..

s.-

8.r

n:

s.: s

. -s

-n. s s: =~. -~. =~. e B s :- .n

s-3 3.,.

=~. ~ .,n --e 3~ =- i ~,. n:.

3.. s.

.s ,i ,.~ ~~ ,~ ~ ~ ~ A. s[Ra

=

se:

=

aad aai sai aai sai aai das sai dai ~ ~

=

1' Jai sai Jii aai sai Jai sai das aui 5 9 -i

8.. -

8-- ns-

8.. -

c-s.n .s e n

n. n :

~ s.8 s- ~~. s -a n r a

=

s

=

7 g.e dai sai sai i~e

as ead aad aai sai g

1 l 8.- ~.-

8. -.. n n.

s. e.,.

e n n. .. n. s. s-s 8s8

3..,

3-4 i i 3 3 3 3 3 -E. -5 g v 5 I. 5 5 1 1 21 I. i 1 Ei I l 1 1 1 f ~4'4,.ff :. i 2 3, 3-3 i i,3, 3, 2, 3-[, .If

. j,, g a

,,3 og m E I I 3 .33 3l

14.. -i.

f5 6 -l 21 -h 3 E 2

- i.2

52 ll.

.e -la m. -l m. -a 65

SECTION Y DUQUESNE LIGHT COMPANY 1982 ANNUAL ENVIRONMENTAL REPORT Summary and Conclusions Zooplankton densities throughout 1982 were typical of a temperate zooplankton community found in large river habitats. Total densities were slightly higher than tfwse reported in previcus years. The populations the summer of 1982 maintained Protozoans and Sigh densities until the annual maximum occurred in October. rotifers were always predominant. Common and abendant taxa in 1982 were similar to those reported during preoperational and other operational years. Shannon-Weiner diversity, number of species and evenness were within the ranges Based on the data collected or slightly greater than those of preceeding years. during the seven operating years (1976 through 1982) and the three preoperating years (1973 through 1975), it is 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 ten year period from 1973 to 1982. 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 zooplankton densities in the Ohio River near BVPS. l l 66 ....~

SECTION Y DUQUESNE 1.lGHT COMPANY 1982 ANNUAL ENVIRONMENTAL REPORT E. FISH Oblective . 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 1982. During each survey, fish were collected at the three study areas transects (Figure V-E-1), using gill nets, minnow traps, and electrofishing gear. Gill nets, consisting of five, 25-ft panels of 1.0, 2.0, 2.5, 3.0 and 3.5 inch square mesh were used. Two nets were positioned perpendicular to shore at each transect, with the small mesh inshore. As Transect 2 is divided by Phillips Island into two separate water bodies censisting of the main river channel (2A) and the back channel (2B), south of the island, a total of eight gill nets were set per empling 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 two to four amps was generally used. Shocking time was maintained at 10 minutes per station for each survey. The shoreline areas of each transect were shocked and large fish processed as described above for the gill net collections. Small fish were immediately preserved with 10% formalin and returned to the laboratory for analysis in the following manner. All game fish were measured and weighed individually. Samples of non-game fish which contained 30 specimens or less were measured individually and weighed together. Samples of non-game fish containing more than 30 specimens were subsampled. Total lengths were recorded for 30 randomly chosen specimens, and a batch weight obtained for the entire sample. The length range was determined by visual inspection of the largest and smallest fish. Minnow traps were baited with bread and placed next to the inshore side of each gill net on each sampling date. These traps were painted black and brown with a 67

m rnndo 2 hf$fl' G ( y t, %% 0 $ '. %dEh g k ( [N@l% 3 A Eg a %a e s 7 Eh \\ cn ,f y M,, gg >u r- > w sa U* b' y2 ma. $\\ SYMBOLS LEGEND jj 2A O os eEAVER VALLEY oisCHARGE ff,,,,,, lo s STATION NtMBER W i o2 SHiPPINGPORT otsCHARGE 1: ELECTR0 FISHING ig /,, i I GILL NET os iMousTRsAt ossCHARGE 2e e Aio To NAv GATion i sEAvrR MINNOW TRAP k'[gq sT PlNG Qgy

TRANsuisseON LlHE w

STATION FIGURE V-E-1 FISH SAMPLING STATIONS, BVPS

~ SECTION V DUQUESNE LIGHT COMPANY 1982 ANNUAL ENVIRONMENTAL REPORT i camouflage design traps. Traps were set for 24 hours. All captured fish were preserved and processed in the laboratory in the manner described for electre-fishing. Results Fish population studies have been conducted in the Ohio River near BVPS from 1974 through 1982. These surveys have collected 52 fish species (Table V-E-1). In 1982, 32 fish species were collected, including two species (spottail shiner and flathead catfish) that had not been captured previously. A combined total of 1,248 individuals were collected in 1982 by electrofishing, gill netting, and minnow traps (Table V-E-2). A total of 643 fish, representing 21 species was collected by electrofishing (Table V-E-3). Emerald shiners dominated the catch numerically, accounting for 37.3% of l the total electrofishing catch. Collectively, the minnow family accounted for 77.9% of the total electrofishing catch in 1982. Gizzard shad, also a forage species, represented 12.1% of the catch. The most abundant sport fish was smallmouth bass which comprised 4.4% of the electrofishing catch. Each of the other taxa accounted for less than 1% of the total. Most of fish were collected in November (46.8%). The fewest fish were collected in May (8.4%). Common carp, walleye, channel catfish, and gizzard shad were the most abundant fishes caught, all represented by at least twenty (20) individuals (15.9%). Spotted bass and freshwater drum had twelve and ten specimens collected, respectively. Sauger was collected eight times, with all other species (longnose gar, northern pike, muskellunge, quillback, silver redhorse, golden redhorse, shorthead redhorse, flathead catfish, rock bass, largemouth bass, and white crappie) collected one or two times during 1982 (Table V-E-2). The gill net results varied by month with the highest catch in the month of September (55 fish). May was the next highest month with 40 fish. July and November catches resulted in 13 fish and 18 fish, respectively. Gill nets typically catch more fish in warmer weather when fish are usually more active 69

SECTION V DUQUESNE LIGHT COMPANY 1982 ANNUAL ENVIRONMENTAL REPORT TABLE V-E-1 (SCIE!CIFIC AND COMON HAME) FAMILIES AND SPECIES OF FISH COLLECTED IN THE NEW CUMBERLAND POOL OF THE OHIO RIVER, 1970-1982 BVPS Family and Scientific Name Common Name Lepisosteidae (gars) Lepisosteus osseur Longnose gar Clupeidae (herrings) Alosa chrysochloris Skipjack herring Dorosoma cepedianum Gizzard shad Ezocidae (pikes) Esox lucius Northern pike E. masquinongy Muskellunge E. lucius X E. masquinongy Tiger muskellunge Cyprinidae (minnows and carps) Campostoma anomalum Central stoneroller Carassius auratus Goldfish Cyprinus carpio Common carp C. carpio X Carassius auratus Carp-goldfish hybrid Notemigonus g ysoleucas Golden shiner Notropia atherincides Emerald shiner ~N. cornutus Common shiner a N. hudsonius Spottail shiner N. rube?lus Rosyface shiner N. spilopterus Spotfin shiner

3. stramineus Sand shiner N. volucellus Mimic shiner Pimephales notatus Bluntnose minnow Rhinichthys atratulus Blacknose dace Semotilus atromaculatus Creek chub Catostomidae (suckers)

Carpiodes cyprinus Quillback Catostomus commersoni White sucker Hypentelium nigricans Northern hog sucker Ictiobus niger Black buffalo Moxostoma anisurum Silver redhorse M. duquesnei Black redhorse M. erythrurum Golden redhorse M. macrolepidotum Shorthead redhorse 70

SECTION V DUQUESNE LIGHT COMPANY 1982 ANNUAL ENVIRONMENTAL REPORT TABLE V-E-1 (Continued) Family and Scientific Name Common Name Ictaluridae (bullhead catfishes) Ictalurus catus White c:tfish I_. melas Black bullhead I. natalis Yellow bullhead I. nebulosus Brown bullhead I. punctatus Channel catfish Pylodictis olivaris Flathead catfish Percopsidae (trout-perches) Percopsis omiscomayeus Trcut-perch Cyprinodontidae (killifishes) Fundulus diaphanus Banded killifish Percichthyidae (temperate basses) Morone chrysops White bass Centrarchidae (sunfishes) Ambloplites rupestris Rock bass Lepomis cyanellus Green sunfish L. gibbosus Pumpkinseed L. macrochirus Bluegill Micropterus dolomieui Smallmouth bass M_. punctulatus Spotted bass M. salmoides Largemouth bass Pomoxis annularis White crappie P_. nigromaculatus Black crappie Percidae (perches) Etheostoma nigrum Johnny darter E. zonale Banded darter Perca flavescens Yellow perch Percina caprodes Logperch Stizostedion canadense Sauger S_. vitreum vitreum Walleye Sciaenidae (drums) Aplodinotus grunniens Freshwater drum I"'Ponenclature follows Robins et al. (1980). 71

m ITIO -1 Thera v-E-2 O IMSWER OF FISM CDtJACTED BY Gi!J. NET (G), EtJ:CTROFISNING (E), AND MINNOW TRAF (N) Z AT TRANSECTS IN THE MBf CUseER!AND POOL OF 711E ONIO RIVER, 1982 BVPS Percent 1 2A 23 3 Grand Total Annual Annual G E M Q R M G E N G E N G '2 M Total Total ] Oc langnose gar 1 1 1 0.1 N Ginsard shed 3 1 42 2 15 35 20 70 V8 7.9 )= U Northern pike 1 1 2 2 0.2 Z Muskellunge 1 1 1 0.1 2 C Goldfish 1 1 1 0.1 COC >h Common carp 2 2 4 9 14 10 1 21 21 42 3.4 F Golden shiner 1 1 1 0.1 Emerald shiner 153 43 48 3 15 6 24 40 240 92 332 26.6 rri Z Spottall shiner 2 2 2 0.2 Z fr1 Spotfin shiner 4 12 2 2 2 2 61 8 77 05 6.8 $ g-. y y Sand shiner 26 40 01 19 6 4 4 23 117 86 203 16.3 yO Mimic shiner 8 3 15 1 1 4 3 27 0 35 2.8 O Bluntnose minnou 29 102 '48 48 9 16 6 06 172 258 20.7 2 Quillback 1 1 2 2 0.2 7 Silver redhorse 1 1 1 1 2 2 4 0.3 %C Golden redhorse 5 1 1 1 6 7 e.6 Z O Shorthead redhorse 1 2 4 1 1 7 0 0.6 -1 $ Channel cattleh 3 5 1 2 9 4 7 30 20 4 37 41 4.9 > *U Flathead cattleh 1 1 1 0.1 P>2 Trout-perch 1 1 1 2 1 3 0.2 W N pock base 1 1 1 0.1 ITI Green ounfish 1 2 3 3 0.2

C Fumpkinnee1 1

1 2 1 3 4 0.3 O Bluegill 1 1 2 2 0.2 N saattoouth bees 5 6 16 1 28 28 2.2 Spotted base 4 1 2 2 1 6 12 3 1 16 1.3 f.argemouth taase 1 1 2 1 2 3 5 0.4 white crapple 1 1 1 8.1 togperch 3 3 3 0.2 8 auger 2 3 3 5 9 0.6 Nelleye 3 4 7 6 20 20 1.6 Freshwater drum 2 4 4 10 to 0.8 l Total 20 234 206 17 261 76 20 78 31 61 70 166 126 643 479 1240

W f71O -i ~ TAeta V-E-3 OZ NUMBER OF FISM CDLI2CTED PER MDIFTTI ST GitL NET (G), BI2CTROFISNING II), AND MINNON TAAP (M) IN THE IEEN CINGERIAND FOOL OF TWE CHIO RIVER, 1902 4 BVPS Percent May July September teovember Grand Total Annual Annual G E N G E N G B M G E N G E M Total Total Os M Longnose ger 1 1 1 0.1 Glassed ahed 1 4 41 15 37 20 78 98 7.9 3 teorthern pike 2 2 2 0.2 2 Muskellunge 1 1 1 0.1 2 Goldtteh 1 1 1 0.1 C h common cary 11 le 2 2 6 5 2 4 21 21 42 3.4 Golden shiner 1 1 1 0.1 Un j Emerald shiner 11 0 6 24 199 84 240 92 332 26.6 mZ spotteil ehiner 2 2 2 0.2 2N y spotfin shiner 1 2 2 2 4 74 0 77 05 6.0 <F w send shiner 2 1 10 1 9 4 36 80 117 96 203 16.3 W"g O Mimic shiner 5 6 6 3 10 5 27 e 35 2.s 2.y Bluntnose minnow 4 28 2 14 3 40 167 86 172 250 20.7 .g Gul11 beck 1 1 2 2 e.2 E Silver redhorse 1 2 1 2 3 4 0.3 M b Golden redhorse 4 1 1 1 1 6 7 e.6 Z O d Shorthead redhcree 1 2 1 4 1 7 8 S.6 [ Channel cetrish 5 3 1 14 1 6 31 20 4 37 61 4.9 Flathead catfish 1 1 1 0.1 7 Trout-perch 1 1 1 2 1 3 0.2 4 acek bees 1 1 1 0.1 y Green sunfloh 1 2 3 3 0.2 O Fumpkinseed 1 1 1 1 1 3 4 0.3 y Bluegill 2 2 2 0.2 q Smallmouth base S 6 10 4 20 20 2.2 Spotted bees 9 1 3 2 1 12 3 1 16 1.3 j Largemumth twee 3 2 2 3 5 9.4 white croppie 1 1 .1 Logperch 1 2 3 3 0.2 i Sauger 5 3 0 0 0.6 We11 eye 1 7 12 20 20 1.6 Freshwater drum 4 3 3 10 10 0.0 Total 40 54 11 13 165 4 55 123 20 le 301 444 126 643 479 1246

~ECTION V DUQUESNE LIGHT COMPANY j 1982 ANNUAL ENVIRONMENTAL REPORT 1 (Table V-E-4). The high number of fish collected in May was attributed to schools of common carp caught near the shore, probably in preparation for spawmng. i A total of 479 fish were captured using minnow traps in 1982 (Table V-E-2). This 1 gear was most effective in November when 92.7% of the fish were caught. Most of there fish were collected from Transect 1 (206 fish). Young-of-the-year channel i catfish (30 fish) were collected at Station 3. 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. 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. Also turbidity and current affects the collectors' ability to net stunned the 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 per unit effort from year to year and station to station. However, gill nets catch mostly large game species and are more indicative of true changes in fish abundance. When comparing gilt 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 1982 gill net catch per unit effort (fish /24 hours) was the highest of any year to date, with 2.4 and 4.4 for the Control and Non-Control Transects, respectively. Comparison of Preoperational and Operational Data Electrofishing and gill net data, expressed as catch-per-unit-effort, for the years 1974 through 1982 are presented in Tables V-E-5 and V-E-6. These nine years represent two preoperational years (1974 and 1975) and seven operational years (1976 through 1982). Fish data for Transect 1 (Control Transect) and tre averages 3 b 74 i

SECTION Y DUQUESNE LIGHT COMPANY 1982 ANNUAL ENVIRONMENTAL REPORT TABLE V-E-4 NUMBER OF FISH COLLECTED BY GILL NET, ELECTROFISHING, AND MINNOW TRAP AT TRANSECTS IN THE NEW CUMBERLAND POOL OF THE OHIO RIVER, 1982 BVPS Transect Gill Net 1, M 2B 3, Total Average May 8 8 9 15 40 10.0 July 4 2 2 5 13 3.2 September 5 6 12 32 55 13.8 November 3 1 5 9* 18 5.1 Total 20 17 28 61 126 Average 5.0 4.2 7.0 17.4 Electrofishing May 8 7 25 14 54 13.5 July 9 144 10 2 165 41.2 September 16 47 20 40 123 30.8 November 201 63 23 14 301 75.2 Total 234 261 78 70 643 Average 58.5 65.2 19.5 17.5 Minnow Trap May 1 1* 9 11 3.2 July 2 1 1 4 1.0 September 7 10 2 1 20 5.0 November 198 63 28 155 444 111.0 Total 206 76 31 166 479 Average 51.5 21.7 7.8 41.5 Gear at one station missing ( l 75 I

SECTION V DUQUESNE LIGHT COMPANY 1982 ANNUAL ENVIRONMENTAL REPORT s 9--9---..=-g.g........--........9-99-9... 9... g g

g.7...*.*9.""."....*."..""..-9...**.".9."***...... ". "... 9 s.

di.ea3-e....i...i....i.......ead...di..i 3 je..... 4.4..a.gigag.sidde..... 44... 4ei444.4444... f [j..99.***g*.5....-"..".".-"-"..-.*.*.t"..*.........** g. g A .. g g..... ". "..... -...

9. 5 9

9 *.
9

%j *..... ". 9

9 - *.

g g 8 g J-......--9--.g-g.....................t. .at..... c '2 9 ~~~ -a g I ga......g-3.e............;...................g I I . 9 ......9..... 9 J.......--,...........,.......9.-, g g

.g 3

9 .......g g =.....

9. 9...

9..... 99.9........ g J3 g ?! g:- j. he g

a....= g."-

g........ 9.. 9........ tot... 9.... 3 9

9*

99 9 = 3 lI E -9 9 9 gl-...-g.9.g.i....... 9.... 9...... 9999........ g g g I J...... 5 9 9 9....... 9.......... *. *. 9

9..

9. *. 9....

9 g-p g g gg 0 ......g......".".9....."...*..".".**..*...""...

- - - 9 W

J2 g I a l

314...

4.f4g4fi.. 4................d44........ d -1 a c R ..g.9****g ;....................--.......... g .g.g."g................................ g c..... 9 .....,. 9e.9. 9.....................99. g g 2 i I E E E I l li sa n e 3:.IIII{.12]= =..qi 2,22:3, 4 g: _3 ;1 = ]=:g is .= -=_-t=

3. p t.

s s ;_;;I =al3..: 22- -: 2 -l l:l.:4a~~.,t p:i a= tgeq i -l *i g:I _l a o s-i l1. s i ! g 8 2 ;. ; =.I ; 3_,2 - L,2g jls.::a.i ~._;=l.1 e ; -ss_. a.: ..I.ae.i 2 2 = 1s 1 E.:._ ; ,6 e -s 4 =

1. _..st. _a

.a a 76 y ,y--

SECTION V DUQUESNE LIGHT COMPANY 1982 ANNUAL ENVIRONMENTAL REPORT 9..........-.......-.....- 9 3; ww w w-, ww w w %..9...*............*.......9..."9".i ww w w w El .d.444.44........i...... 44. 44. ? a w ww ww w e. $.=i....i.4444.......i.4.... 444444. v vvw v v v v d .l 99.*. --* * - = A www w ww a . g A 4 a a. ,3 ei4. 444444....i. a.4444.4444444. 2 ~* vw w w w w w g 1 g .f d.....-.......................... - a v v v v v vv g ~~- .1 C I .. 9.........~.~.."...... 9.... 9... 9 a l -1 Q I $.9.......9.......*........*...."".". a =. 6 i s Ett L. 9........... 9............... 9 i,g g 4 e E ,l g..................~............... I ~................... 9..

9.. ~... ". "... A

~ w www i E C E ....9..9.........*..........999.. t g g, E .....9.~~........~.~....... s 3 [ 2 a 9 g.................... 9... 9.a ....... = g......~.. 9........

9. 9.....a

.t... 9 9 %l..... 9........ 9............ 99... 2 h I I 33 l I c 22.22I.1. 111. 2, .1 a 3 i .!I IE 33 3-gl:-[11 **{-i::3:c.t.il= seat}.t

s e

g

-:1 ;:.(

5.1 E:. s:; s s e ! :.. s g 3 2 2 3 ij sasssa.3 a:::s r s}21gl.s1 n.l:s s::::.)]. y J.g J.' J t ...v. s s.- .l.2 as.: sm e : s s i.sts ..l 77

i SECTION V DUQUESNE LIGHT COMPANY 1982 ANNUAL ENVIRONMENTAL REPORT 1 of Transects 2A,2B and 3 (Non-Control Transects) are tabulated separately. These data indicate that new species are inhabiting the study area and that, in general, the water quality of the Ohio River is steadily improving. Summary and Conclusions The fish community of the Ohio River in the vicinity of BVPS has been sampled from 1974 to present, using several types of gear: electroffshing, gill netting, minnow traps, and seines. The results of these fish surveys show normal community structure based on species composition and relative abundance. In a!! the surveys since 1974, 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. Variations in total annual catch are attributable primarily to fluctuations in the population size of the small species. Small species with high reproductive 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 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 1974, forage fish of the family Cyprinidae have dominated the catches. Emerald shiners, sand shiners and bluntnose minnows have consistently been the most numerous fish. Carp, channel catfish, smallmouth bass, yellow perch, and walleye have all remained common species. Since 1978, sauger has become a common sport species to this area. l l Differences in the 1982 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 the habitat preferences of individual species. This habitat preference is probably the most influential factor that effects where the different species of fish are collected and in what relative abundance. l 78

SECTION V DUQUESNE LIGHT COMPANY 1982 ANNUAL ENVIRONMENTAL REPORT Data collected from 1974 through 1982 show no evidence that the fish community in the study area has been adversely affected by BVPS operation. i t l 79 \\ ~ - w w<------< e w-w mr we -m,- w wm,~m wwp- -y,w -e,- m--w--- y-ww m,-----w* e =q w >en

SECT!ON V DUQUESNE LIGHT COMPANY 1982 ANNUAL ENVIRONMENTAL REPORT a F. ICHTHYOPLANKTON 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 Four monthly surveys were conducted during the spring and summer, which is the primary spawning season for most resident species (19 April,18 May, 21 June, and 20 July). 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 watcr 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 enumerated. Each specimen was identified as to its stage of development (egg, yolk-sac, larvae, early larvae, juvenile, or adult) and to the lowest possible taxon. Densities of 3 ichthyoplankton (numbeis/100 m ) were calculated for each sample using flow-meter data. Results 3 A total of 7 eggs, 94 larvae, and one adult was collected in 1982 from 909.7m of ( water sampled (Table V-F-1). Six taxa representing four families were identified. Cyprinidae spp. (mir. nows and carp) accounted for 87.3% (1 egg, 87 larvae, I juvenile) of the total catch. Minnow (Cyprinidae spp.), representing 57.1% of the eggs taken, was the only identifiable egg taxon collected in 1982 (Table V-F-1). Minnows also dominated the larval catch (88.3% of the total yearly catch). Other larval taxa collected included l l 80

w modoZ e.. m. s O j' ' W,, %,h e un. eine 4 g o + r lc ' -,,' ".),h. [ i, 2 0 N,%,M{D. LANQ,,, ) zC 4,em', CO is%,'(. J, ' ' ( ', ;\\ e yC -i ( r m = = =. N w "i i, >,,,,,'t,, t'p,itg ,W 2m e... mZ 1 4'd""i,,' ',$ - 4

i 0

1 9 $r ) ,,"N f DB ,1 m h~E )\\ P f

maseav5,

~' r e so i. ze, e i .s 1 F> 4ag3 b. Z 26 I, y< x =g. ss n ex m-LEGEND _ (( .3XMBQL1 [ h A SURFACE TOWS [ Di BE AVER VALLEY DISCHARGE j ;,,, or D2 SHIPPINGPORT DISCHARGE tys/ i Q a BOTTOIA TOWS D3 INDUSTRIAL DISCHARGE 462ts I' e A10 TO NAVIGATION i BEAVER

TR ANSidlSSION LINE ER ST N OWER STATION FIGURE V-F-1 ICitTHYOPLANKTON SAMPLING STATIONS, BVPS

4 a TABLE V-F-1 m m NUNBERANDDENSgTYOFFISHEGGS, LARVAE, JUVENILES,ANDADULTS h (Number /100 m ) COLLECTED WITH A 0.5 m PLANKTON NIrr IN THE o OHIO RIVER BACK CHANNEL OF PHILLIS ISIAND (STATION 2B) Z NEAR BVPS, 1982 Date Depth of Collection Total Collected and 19 April Surface Bottom Taxa Density Vol. water filtered (m ) 112.6 116.2 228.8 i No. eggs collected 0 0 0 2 0h larvae collected 0 0 0 No., juveniles collected y@C No. 0 0 0 r" No. adults collected 0 0 0 mz Zm Density (number collected) I C t Eggs hQ m Unidentifiable 0 0 0 ~ h*n Total density (number collected) 0 0 0 m 1 2 O 18 Nay qg > 'o Vol. water filtered (m ) 125.0 87.1 212.1 2 No. eggs collected 0 1 1 m *< No. larvae collected 1 6 7 [ No. juveniles collected 0 0 0

o d

l No. adults collected 0 0 0 ) Density (number collected) l Eggs Unidentifiable 0 1.15(1) 0.47(1) I Larvae Dorosoma cepedianum (YL) 0 3.44(3) 1.41(3) Cyprinus carpio (YL) 0.80(1) 0 0.47(1) .l Cyprinidae sp. (YL) 0 1.15(1) 0.47(1) Perca flavescens (EL) 0 2.30(2) 0.94(2) 1 Total density (number collected) 0.80(1) 8.04(7) 3.77(8) i l i

TABLE V-F-1 (Continued) vi m Date Depth of Collection Total Collected and h 21 June Surface Botton Taxa Density O 3 Vol. water filtered (m ) 126.6 99.0 225.6 No. eggs collected 2 1 4 No. larvae collected 2 10 12 No. juveniles collected 0 0 0 No. adults collected 1 0 1 g oo N Density (number cellected) Eggs c Cyprinidae opp. 1.58(2) 2.02(2) 1.77(4) zC Larvae Cyprinidae app. (YL) 0 6.06(6) 2.66(6) r m Cyprinidae app. (EL) 1.58(2) 2.02(2) 1.77(4) m{z m Unidentifiable (L) 0 2.02(2) 0.89(2) gC Adults y Notropis atherinoides 0.79(1) 0 0.14(1) OO zy Total density (number collected) 3.95(5) 12.12(12) 7.54(17) gg zO H SC 20 July > 'u r> 3 vol. water filtered (n ) 103.3 139.9 243.2 y2 i No. eggs collected 0 2 2 m4 No. larvae collected 39 36 75 o No. juveniles collected 0 0 0 W No. adults collected 0 0 0 4 Density (number collected) Eggs Unidentifiable 0 1.94(2) 0.82(2) Larvae Cyprinidae app. (YL) 4.29(6) 1.94(2) 3.29(8) l Cyprinidae spp. (EL) 23.59(33) 30.01(31) 25.32(64) Aplodinotus grunnlens (EL) 0 1.94(2) 0.82(2) Unidentifiable (YL) 0 0.97(1) 0.41(1) Total density (number collected) 37.75(39) 27.16(38) 31.66(77) i l 4

TABLE V-F-1 (Continued) m rn Depth of Collection Total Collected and h Yearly Totals Surface Botton Taxa Density o Z Vol. water filtered (m ) 467.5 442.2 909.7 No. eggs collected 2 5 7 No larvae collected 42 52 94 No. juveniles collected 0 0 0 No. adulte collected 1 0 1 g Density (number collected) O Eggs >U Z Cyprin'idae spp. 0.43(2) 0.45(2) 0.44(4) C Unidentifiable 0 0.68(3) 0.33(3) CO [h Larvae Dorosoma cepedianum (YL) 0 0.68(3) 0.33(3) rn$ Cyprinus carpio (YL) 0.21(1) 0 0.11(1) Z rn Cyprinidae spp. (YL) 1.28(6) 2.04(9) 1.65(15) d C co Z{ Cyprinidae spp. (EL) 7.49(35) 7.46(33) 7.47(68) ^ o Perca flavescens (EL) 0 0.45(2) 0.22(2) q Aplodinotus grunniens (EL) 0 0.45(2) 0.22(2) hn Unidentifiable (YL) 0 0.23(1) 0.11(1) Z O Unidentifiable (L) 0 0.45(2) 0.22(2) jh i Adults r- > yk Notropis altherinoides 0.21(1) 0 0.11(1) Total density (number collected) 9.63(45) 12.89(57) 11.21(102) 3

o

" Developmental Stages I YL - Hatched specimens in which yolk and/or oil globules are present. EL - Specimens in which yolk and/or oil globules are not present and in which no fin ra'ys and/or spiny elements have developed. L - Specimens whose larval stage is undefinable due to body deterioration. l

SECTION V DUQUESNE LIGHT COMPANY 1982 ANNUAL ENVIRONMENTAL REPORT I gizzard shad (Dorosoma cepedianum; 3.2% of the total larval catch), yellow perch (Perca flavescens; 2.1%), and freshwater drum (Aplodinotus grunniens; 2.1%). No juveniles were collected in 1982; however, a single adult emerald shiner (Notropis atherinoides) was taken during 21 June sampling. On a seasonal basis, ichthyoplankton was most abundant on 20 July when total daily 3 density was 31.66 Individuals per 100m of water filtered (Table V-F-1). All but two (97.3%) of the identifiable specimens were minnow larvae. The other identifiable larvae taxon collected on this date was freshwater drum. Collections 3 on 21 June yielded 7.54 individuals per 100m ; most (82.4%) were minnow eggs and larvae. The greatest diversity of taxa for the year was found during 18 May 3 sampling; however, total density of individuals was relatively low (3.77/100m ). Four taxa of three families were collected on this date in nearly equal numbers. Sampling on 20 April yielded no ichthyoplanton. Comparison of Preoperational and Operational Data Species abundance and composition was similar to that found in previous years. As in previous years, minnows dominated the catch with other taxa represented by only a few individuals. Densities of ichthyoplankton collected in the backchannel (Station 2B) from 1973-1974,1976-1982, are presented in Table V-F-2. _ Summary and Conclusions As in previous years, cyprinids dominated the 1982 Ichthyoplankton catch from the back channel of Phillis Island. Peak densities of minnows occurred in June and July and consisted mostly of the early larval stage. Little or no spawning was noted in April and May. No substantial differences were observed in species composition or spawning activity of most species over previous years. 1 85-

SECTION V DUQUESNE LIGHT COMPANY 1982 ANNUAL ENVIRONMENTAL REPORT TABLE V-F-2 3 DENSITY OF ICHTHYOPLANKTON (Number /100m ) COLLECTED IN THE OHIO RIVER BACK CHANNEL OF PHILLIS ISLAND (STATION 2B) NEAR BVPS, 1973-1974, 1976-1982 Date Density Date Density 1973 1978 12 April 0 22 April 0 17 May 0 5 May 0 20 June 16.10 20 May 0.98 26 July 3.25 2 June 4.01 16 June 12.15 2 July 13.32 1974 16 April 0 24 May 0 1979 13 June 6.98 19 April 0 26 June 9.25 1 May 0 16 July 59.59 17 May 0.81 1 August 6.85 7 June 0.39 20 June 11.69 5 July 14.82 1975 29 April 0.70 19 May 0 1980 18 June 5.99 23 April 0.42 2 July 6.63 21 May 0.53 15 July 3.69 19 June 9.68 29 July 4.05 22 July 107.04 1977 14 April 0 1981 11 May 0.90 20 April 1.10 9 June 24.22 12 May 0 22 June 3.44 17 June 26.40 7 July 3.31 22 July 17.14 20 July 28.37 1982 19 April 0 18 May 3.77 21 June 7.54 20 July 31.66 l 1 86

SECTION V DUQUESNE LIGHT COMPANY 1982 ANNUAL ENVIRONMENTAL REPORT G. FISH IMPINGEMENT (ETS Reference 3.1.3.7) Objective impingement surveys were conducted to monitor the quantity of fish impinged on the traveling screens. Methods The surveys were conducted weekly throughout 1982 for a total of 52 (Table V-A-1). Except when technical difficulties delayed the start of collections, weekly fish impingement sampling began on Thursday mornings when all four traveling screens were washed. A collection basket of 0.25 inch mesh netting was placed at the end of the screen washwater sluiceway (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, counted, measured for total length (mm) and weighed (g). Data were summarized according to operating intake bays (bays that had pumps operating in the 24 hr sampling period) and non-operating intake bays. Results The BVPS impingement surveys of 1976 through 1982 have resulted in the collection of 33 species of fish representing nine families (Table V-G-1). A total of 227 fish, representing 22 species (24 taxa) was collected in 1982 (Table V-G-2). Emerald shiner were the most numerous fish, comprising 30.0% of the total annual catch, followed by channel catfish (26.0%) and gizzard shad (12.0%). Bluegill (19 specimens) accounted for 8.4% with all other species represented by less than ten specimens. No endangered or threatened species were collected (Commonwealth of Pennsylvania 1981). In addition, 293 crayfish, 20 native clams (Lampsilus), and 1 16 dragonflies were collected on the traveling screens in 1982. In addition, 299 Asiatic clams (Corbicula) were collected. l Two flathead catfish, a species not collected in previous years, were collected in 1982. All fishes ranged in size from 24 mm to 182 mm, with the majority under 100 mm. The total weight of fish collected in 1982 was 0.596 kg (1.32 lbs) (Table V-G-2). 87 t

SECTION Y DUQUESNE LIGHT COMPANY 1982 ANNUAL ENVIRONMENTAL REPORT FIGURE V-G-1 INTAKE STRUCTURE BVPS ... 4, e io.. b'Q. 1L.I l

u..

ii.. ,,,,h, (\\ i!!:U.!!'!U'!':if00;..... 7M m ' :::::':::h [ V',' c oM,:: :,n;'!.'u.. in. '.!!Uf','::: i 3 ~ g u ikii ~-- 8 V t: b.l [y[h l b ,i.,u.........,, n q4 1.. u n.... <,d;f.g, 7 a.... /., N j 1 l ' ' 'v ,l f< _.%j[l g .. - u., n.., I na[q n a.. .in:n .,...o n n.u..,....n.u. ... e s .i.,,., u,...;g ;o;;,:;u n,..,... (Three dimensional: Cutaway View)

i j

1: ri t.p s sec..si g u.s. gg,vect ' '9 e M:8 8' M8 8 ji n.nus LT li\\ l 9 l,,,m ~. 'l 4 il r/, new. I! q -(nyss.:li b;;'aj.//a b.,. .q l ci s \\ m, 1 I } 1 un se \\ m,.=esa =- t, --.m i ~ M ft ./'"T."".Y ji "'N j CTGTs' l lt \\ I M o - r.: w-A l'i '7 N c.....r s n. (Two dimensional: Side View) 88

SECTION V DUQUESNE LIGHT COMPANY 1982 ANNUAL ENVIRONMENTAL REPORT TABLE V-G-1 (SCIENTIFIC AND CONtON NAME)(*' FAMILIES AND SPECIES OF FISH COLLECTED DURING THE IMPINGEMENT SURVErS, 1976-1982 BVPS Family and Scientific Name Common Name Clupeidae (herrings) Dorosoma cepedianum Gizzard shad Cyprinidae (minnows and carps) Cyprinus carpio Common carp Notemigonus crysoleucas Golden shiner Notropis atherinoides Emerald shiner N. spilopterus Spotfin shiner N. stramineus Sand shiner N. volucellus Mimic shiner Pimephales notatus Bluntnose minnow Catostomidae (suckers) Carpiodes cyprinus Quillback Catostomus commersoni White sucker Moxostoma carinatum River redhorse Ictaluridae (bullhsad catfishes) Ictalurus catus White catfish I, natalis Yellow bullhead I. nebulosus Brown bullhead I. punctatus Channel catfish Noturus flavus Stonecat Pylodictis olivaris Flathead catfish Percopsidae (trout-perches) Percopsis omiscomayeus Trout-perch l l Cyprinodontidae (killifishes) Fundulus diaphanus Banded killifish Centrarchidae (sunfishes) Ambloplites rupestris Rock bass Lepomis cyanellus Green sunfish L. gibbosus Pumpkinseed L. macrochirus Bluegill Micropterus dolonieui Smallmouth bass M. punctulatus Spotted bass M. salmoides Largemouth bass Pomoxis annularis White crappie P. nigromaculatus Black crappie l l l 89

r

\\ ) + ? h SECTION V DUQUESNE LIGHT COMPANY f '} 1982 ANNUAL ENVIRONMENTAL REPORT j g,, t. ', j .s \\ \\ TABLE V-G-1 (Continued) !l t f, s i! s N - family and Scientific Name Common Name Percidae (perches) Etheostoma nigrum Johnny darter / Perca flavescens Yellow perch Percina caprodes Logperch Stizostedion vitreum vitreum Walleye ,[

1 Scimenidae (drums)

Aplodinotus grunniens Freshwater drum 's, t l1 I"' Nomenclature follows Robins et al. (1980) / yi + ~ L i f* 4 0 e l 90

e i s TASIE V-G-2 StNetARY OF FISM CDL12CTED IN INFINGIBSNF SURVEYS CONDUCTED FOR ONE 24 NOUR PERIOL-PER NEER DURING 1982 M SVPS I II Operating intake says *I Non-opeigting Intake Says Percent Aalve Dead Alive. _ Dead Lengtta Frequency of Percent Neight weight Ne4 &M Neight Range Tasa Number occurrence Composition Number JL Number (g) Number . (gt. Number (g) (mm) Glaserd ehed 1 1.9 0.4 1 14 115 Goldfloh 1 1.9 0.4 1 3 71 Q Common carp 1 1.9 0.4 1 2 50 oo Emerald shiner 68 36.5 30.0 4 3 33 12 4 4 27 21 25-72 h3 Nimic shiner 7 7.7 3.1 3 4 4 4 30-55

> U Shiner (Notrople opp.)

22 11.5 9.7 7 7 15 12 30-50 2 Bluntnose minnow 5 5.0 2.2 4 3 1 1 32-46 Z C Brown bullhead" 1 1.9 0.4 1 1 38 CO C Channel cattleh 59 46.2 26.0 10 24 26 45 le 42 5 8 30-124 >h Flathead cettleh 2 3.8 0.9 2 16 67-116 I" Trout-perch 2 1.9 0.9 1 1 1 1 38-43 TTI Z 3anded killtfleh 1 1.9 0.4 1 1 50 2 TTI pock bees 4 7.7 1.0 3 6 1 1 30-60 $ ra Green munfleh 1 1.9 0.4 1 1 47 M] g g Pumpkinseed 2 3.8 0.9 1 1 1 1 45 O Z Bluegill 19 26.9 5.4 5 10 1 1 10 55 3 4 35-110 2q Sunfish (Leposte opp.) 3 3.0 1.3 1 1 2 2 24-34 g O Smallmouth base 3 3.0 1.3 2 12 1 15 49-97 TTI Spotted base 5 9.6 2.2 2 36 1 27 1 20 1 12 101-127 Z O Largemouth base 1 1.9 0.4 1 79 182 H$ white crapple 3 3.8 1.3 1 2 2 30 45-125 >T Black cra5ple 2 1.9 0.9 1 3 1 2 40-57 I Johnny derter 5 9.6 2.2 1 1 1 1 3 3 30-55 A3 Freshwater drus 9 13.5 4.0 6 26 2 14 1 1 65-102 Total 227 29 179 91 186 42 150 65 73 Percent of Total 12.0 30.0 40.1 31.2 18.5 26.5 28.3 12.2 to) Intake boys that had gwpe operating within the 24 hr sampling terlod. (b) Intake baya thet had run pumps operating within the 24 hr sempliru; period I

i SECTION V DUQUESNE LIGHT COMPANY 1982 ANNUAL ENVIRONMENTAL REPORT The temporal distribution of the 1982 impingement catch closely fo!!ows the pattern of catches of previous years (1976 to 1981) (Tables V-G-3 and V-G-4). During each year, the largest numbers of fish have been collected in the winter months (December-February) and then the catch has gradually decreased until the July-September period when another smaller peak has occurred. Comparison of Impinged and River Fish i 1 A comparison of the numbers of fish collected in the river and travelmg screens is j presented in Table V-G-5. Four fish species were collected only in the impinge-ment surveys, while 14 species were taken exclusively in the river. The major difference in species composition between the two types of collections is the absence of many large species in the impingement collectims. Four species of suckers and redhorses, and four species of sport fish (muskellunge, northern pike, walleye, and sauger) were not collected in the impingement surveys. Those sport fish which were collected on the traveling screens (channel catfish and bluegill) were smaller than individuals of those species collected by river sampling. Minnows and shiners constituted a large percentage of the river and impingement collections. Comparison of Operating and Non-Operating Intake Bay Collections Of the 227 fish collected during the 1982 impingement studies, 120 (52.9%) were i collected from operating intake bays and 107 (47.1 %) non-operating intake bays (Table V-G-2). However, due to differences between the number of operating (99) and non-operating (104) screens washed in 1982, the impingement data were 2 computed with catch expressed as fish per 1000 m of screen surface area washed. These results showed 6.8 and 5.8 fish for operating and non-operating screens, respectively. As in previous years, the numbers of fish collected in non-operating bays indicates that fish entrapment, rather than impingement, accounts for some of the catch. Entrapment occurred when fish were lifted out of the water on the frame plates as the traveling screen rotates. Alternatively, when fish were impinged they were forced against the screens due to velocities created by the circulating water pumps. 92 'v-iy v- --e $rwe-D y a w 3 w -w--w-7mw-w-w y ,y oy ,,,-we9-yg-v- -i--gyi g e,w,rw--g m.,wew yym y-y-e- -gew-,r-vwy-m-, w w ,-e c ey +y-y w yiy y--,

I l l i i TABtJt V-G-3 m ITI SUPMARY OF IsrIIeGusetter SUltVXY DATA FOR 1982 BVPS g Numiber of Fish Collected River Operating Mon-Operatig Intake Baya Intake Elevation Date Ntamber Flah Forcent of Intake Baya Intake Says Operating Water Above Mean Month g Collected Annual Total Altre Dead Allwe Dead A B, C D, Temp.k See Level January 8 3 1.3 2 1 X X 31.9 669.0 15 5 2.2 2 1 2 X 27.0 667.6 >= 22 5 2.2 2 3 X 27.5 667.0 29 33 14.5 1 25 1 6 X 28.5 667.2 bJ >U Z February 7 27 11.9 1 11 2 13 X 28.5 668.5 15 10 4.4 2 1 7 I 29.0 667.0 Z C 19 16 7.0 4 2 ,2 8 I 37.5 669.5 C ]

26 13 5.7 2

2 2 7 X 38.0 667.5 gm u March 5 1 0.4 1 X 38.7 667.3 12 3 1.3 1 1 1 1 41.5 668.5 w 19 4 1.8 1 1 2 X 44.5 672.5 h""O 26 3 1.3 1 2 1 45.7 670.8 z-April 2 2 0.9 1 1 X 48.0 669.0 7 9 4 1.8 3 1 X 43.6 668.2 $0 16 2 0.9 1 1 X 49.5 667.0 2 0 j> 23 0 0.0 X 56.3 666.3 30 1 0.4 1 X 58.0 666.5 t-' 2 M May 7 0 0.0 X 63.7 665.9 mN l 14 0 0.0 X 67.5 665.6 au 21 1 0.4 1 X 74.3 665.s O 28 1 0.4 1 X X X 72.0 666.2 N H June 4 0 0.0 X X 72.5 666.2 11 0 0.0 X X 67.0 667.3 18 1 0.4 1 X X X 69.5 668.0 25 1 0.4 1 X 68.0 666.0 l

m mOd i TABtJt V-G-3 (Continued) OZ F Number of Iish Collected River Operati Mon-Operatig Intake Bays Intake Elevation Date' Number Percent of Intake Baya Intake Bays y teting pater Above Nean Month g Collected Annual Total Alive Dead Alive Dead A, B C, D Temp. F See Level July 2 1 0.4 1 I 73.5 666.0 00 N 9 1 0.4 1 X 4 X 77.0 665.4 16 3 1.3 2 1 X X X 80.2 665.5 23 4 1.8 1 3 I E I 83.0 666.0 c 30 0 0.0 I I X 82.9 666.2 g C August 6 3 1.3 3 I E I 82.0 665.7 >m p 13 7 3.1 7 X X X 78.9 666.0 gy 29 1 0.4 1 X X X X 70.6 666.4 Zm 27 3 1.3 3 X X X X 75.0 666.4 e "p A September 3 4 1.8 2 1 1 I X 74.s 665.6 O g 10 4 1.8 2 2 X X X X 74.7 665.9 7 17 3 1.3 3 x x x 75.5 666.0 g 24 5 2.2 2 2 1 I X X 70.3 666.2 mO Z O October 1 4 1.5 2 1 1 X I 67.9 666.4 -l 5 > >T 8 4 1.3 2 2 X X 70.2 666.2 F 1$ 1 0.4 1 X X 67.0 666.0 22 8 3.5 3 1 4 I X 60.5 666.0 W 29 2 0.9 1 1 X X 56.2 665.6 O November 5 2 0.9 2 X X 57.5 666.3 y 12 2 0.9 2 I I X 54.5 665.9 H 19 3 1.3 1 1 1 X X 49.0 665.8 27 1 0.4 1 X X 49.0 667.0 December 3 10 4.4 4 3 2 1 I X 40.'O 668.0 10 1 0.4 1 X X 48.3 665.0 1 17 1 0.4 1 X X 42.0 667.5 24 3 1.3 3 X X 41.0 667.0 1 31 to 4.4 2 4 2 2 X X 45.0 669.0 Total 227 29 91 42 65 I*I tntake bays that had peps operating in the 24 hr sampling period. Intake boys that had no pumps opersting in the 24 hr sampling period. 1 4

(A MO H i TABY.E V-G-4 6 2 SUDetARY OF FISN (DM IN IMPINGIDGENT SUltVETS, 1976-1982 DVPS Ilumber of Fish Collected 1976 1977 1978 Operati Mon-operatig Operating Ison-operating Operating Ison-oper ating stunt h Intake says Intake says Total Intake says Intake says heal Intake says Intake Bars Total e January 3,792 2,021 5.013 1,136 2,069 4,005 106 41 227 N Febr uar y 1,087 1,014 2,121 3,622 2,039 5,661 99 73 172 y search 260 128 308 314 72 386 36 113 149 7 O Apr11 19 11 30 7 3 10 3 1 4 7 C CO my 5 2 7 3 0 3 June 4 1 5 4 3 7 2 4 6 >C l- @ July 20 12 32 27 5 32 9 3 12 August 27 10 37 6 1 7 6 12 18 m7 september s 6 14 1 4 5 7 15 22 2m October 35 0 43 8 3 11 4 14 18 $g Isovember 15 4 19 9 0 9 1 2 3 y-December 374 219 593 174 12 106 20 3 23 Q Z H htal 5,646 3,454 9,102 5,311 5,011 10,322 373 201 654 gmO Z O HE Ilumber of Floh Collected >T I 1979 1900 1901 Operating Mon-operating Operating Iton-operating Operating Ison-oper at ing sconth Intake says Intake says Total Intake says Intake says Total Intake says Intake says Total January 66 16 82 5 0 5 5 1 6 Febr uar y 9 8 17 5 7 12 21 1 22 q March 15 10 25 16 13 29 4 2 6 Apr11 1 0 1 0 11 11 3 0 8 May 3 1 4 0 2 2 7 2 9 June 2 0 2 0 4 4 3 0 3 July 5 2 7 3 10 13 5 2 7 August 20 34 54 10 4 14 12 1 13 September 9 9 IS 4 0 4 15 4 19 October 21 6 27 2 2 4 10 2 12 November 7 6 13 3 1 4 4 0 4 December 8 4 12 6 0 6 20 4 32 Total 162 100 262 54 54 100 122 19 141 I*' Intake bays that had pumps operating in the 24 hr sospilng period. Intake bays that had no pumps operating in the 24 hr sampling period. i i I

SECTION V DUQUESNE LIGHT COMPANY 1982 ANNUAL ENVIRONMENTAL REPORT ) TABLE V-G-4 (Continued) Number of Fish Collected 1982 Operating Non-operatig Total Month Intake Bays Intake Bays January 30 16 46 February 24 42 66 March 4 7 11 April 3 6 9 May 1 1 2 June 0 2 2 July 4 5 9 August 14 0 14 September 13 3 16 October 7 12 19 November 4 4 8 December 16 9 25 Total 120 107 227 I*IIntake bays that had pumps operating in the 24 he sampling period. (b) Intake bays that had no pumps operating in the 24 hr sampling period. ~. 96 l l

SECTION Y DUQUESNE LIGHT COMPANY 1982 ANNUAL ENVIRONMENTAL REPORT TABLE V-G-5 NUMBER AND PERCENT OF ANNUAL TOTAL OF FISH COLLECTED IN IMPINGEMENT SURVEYS AND IN THE NEW CUMBERLAND POOL OF THE ORIO RIVER, 1982 BVPS Total Number of Percent of Fish Collected Annual Total Species "I Impingement River Impingement River I Longnose gar 0 1 0 0.1 Gizzard shad 1 98 0.5 7.9 Northern pike 0 2 0 0.2 Muskellunge 0 1 0 0.1 Goldfish 1 1 0.5 0.1 Common carp 1 42 0.5 3.4 Golden shiner 0 1 0 0.1 Emerald shiner 68 332 33.7 26.6 Spottail shiner 0 2 0 0.2 Spotfin shiner 0 85 0 6.8 Sand shiner 0 203 0 16.3 Mimic shiner 7 35 3.5 2.8 Bluntnose minnow 5 258 2.5 20.7 Quillback 0 2 0 0.2 Silver redhorse 0 4 0 0.3 Golden redhorse 0 7 0 0.6 Shorthead redhorse 0 8 0 0.6 Brown bullhead 1 0 0.5 0 Channel catfish 59 61 29.2 4.9 Flathead catfish 2 1 1.0 0.1 Trout-perch 2 3 1.0 0.2 Banded killifish 1 0 0.5 0 Rock bass 4 1 2.0 0.1 Green sunfish 1 3 0.5 0.2 Pumpkinseed 2 4 1.0 0.3 Bluegill 19 2 9.4 0.2 Smallmouth bass 3 28 1.5 2.2 Spotted bass 5 16 2.5 1.3 Largemouth bass 1 5 0.5 0.4 White crappie 3 1 1.5 0.1 Black crappie 2 0 1.0 0 Johnny darter 5 0 2.5 0 Logperch 0 3 0 0.2 Sauger 0 8 0 0.6 Walleye 0 20 0 1.6 Freshwater drum 9 10 4.5 0.8 Total 202 1248 I*IIncludes only those specimens identified to species. l 97

SECTION V DUQUESNE LIGHT COMPANY 1982 ANNUAL ENVIRONMENTAL REPORT Of the 293 crayfish collected in the 1982 impingement studies, 118 (40.3%) were collected from operating bays and 175 (59.7 %) were collected from non-operating bays (Table V-G-6). Adjusting these data for screen surface area washed (crayfish 2 per 1000 m ) the results show 6.7 and 9.4 crayfish for operating and non-operating screens, respectively. Summary and Conclusions The results of the 1982 impingement surveys indicate that withdrawal o/ river water at the BVPS intake for cooling purposes has little or no effect on the fish populations. Only 227 fish were collected, which is the third fewest collected since initial operation of BVPS in 1976. Of the 227 fish collected,71 (31.3%) were alive and returned via the discharge pipe to the Ohio River. 98

DCOCC2r r52e mOh>24 n-mOdh < _eO h2C>Fm2$WO2k2$rgm oMd s s y e a h B 1 2 1 ce l e l L A se s i y l a f B n 1 2 1 22 1 1 3 1 o l g l a A r D SYE s V u R l U2 i S8 s 9 p F1 m r s a tE, y L s MK a s EE Ba GE l NW l C I l a PR A l ME u I P c 2 1 2 4 2 1 111 1 i ND b I O r I o 6 DR C EE G TP C V ER SP LU g d E LO V n a 11 2 2 2 2 12 722 1 1 L OH B y i e a B C - t D A 4 aB T S2 r e E e k TE p AN Oa e, RO t v 46 3 5 65 9316 02 n 1 1 B n i ER h oI l TO s N A RF i E f VD y NE a I T r da 1 8 1 3 131 11 C C y FU g e a OD n D B N i YO t e RC a k A r a M et e M p v n U O i 1 2 12 319 32 1 I S l A ya 8529 7596 5296 29630 7418 4185 29 D 122 112 112 123 122 112 e taD y h y r t r a n a u h l o u r c i e y M n b r r y n l a e a p a u u J F M A M J J w* E 1' l' i;! i i;,: j~ 1.i'!!;4l 1l1l!ll il]! .I:

1 TABLE V-G-6 (Continued) $n Crayfish d Operating Non-Operating All Bays k Date Intake Bay Intake Bay Class All Bays All Bays 4 Month Day Alive Dead Alive Dead Corbicula Lampsilus Dragonflies Leeches July 16 1 1 1 1 23 1 1 j 30 1 1 1 1 August 6 1 1 13 2 1 86 3 1 2 0 20 6 1 51 3 27 1 18 1

3. C t~ m September 3

1 1 12 3 1 rn z 10 1 20 1 1 1 2 rn 17 1 15 1 5 C hO i o O 24 12 ) October 1 1 1 7 Zh j 8 1 1 1 4 km 15 2 1 12 zO $h 22 1 1 1 29 1 1 1 F>

c 2 November 5

1 1 3 rn < l 12 3 1 1 1 3 19 4 7

a d

I 27 4 5 j December 3 10 7 8 8 10 10 9 1 4 l 17 3 1 15 2 24 7 3 8 1 1 1 2 31 10 2 10 2 15 1 i Total 89 29 136 39 299 20 16 11

SECTION V DUQUESNE LIGHT COMPANY 1982 ANNUAL ENVIRONMENTAL REPORT H. PLANKTON ENTRAINMENT 1. Ichthyoplankton Objective The ichthyoplankton entrainment studies are designed to determine the species composition, relative abundance, and distribution of ichthyoplankton found in proximity to the BVPS intake structure. Methods Previous studies have demonstrated that species composition and relative abun-dance of ichthyoplankton samples collected in front of the intake structure were very similar to those of 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, April through July, during daylight hours along a five station transect. Surface tows were made at Stations 1, 3, and 5 and bottom tows were taken at Stations 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 bengal dye. In the laboratory, eggs, larvae, juveniles, and adults were sorted from the samples, identified to the lowest possible taxon and stage of development, and enumerated. 3 Densities of ichthyoplankton (number /100m ) were calculated using appropriate flowmeter data. Results A total of 70 eggs and 156 larvae representing five taxa of four families was 3 collected from 1837.5m of water filtered during sampling along the river entrainment transects (Table V-H-1). Minnows (Cyprinidae spp.) were the most common taxa, representing 95.1% of the total catch (100% of the eggs, 92.9% of 101 l

1 tn (11Od Tn8LE v-n-1 O Z NCISER AND DENSITY OF FISH EGGS, IARVAE, JUVENILES AND ADULTS (Number /100 m ) COLtACTED N!14 A 0.5m PIANETON NET AT THE ElfrRA1HM9ff RIVER TRANSECT IN THE OHIO RIVER NEAR BVPS, 1982 Total Collected 'Date' Station l' _ Station 2 Station 3 Station 4 station 5 and Taxa Density 19 Aptli 3 vol. water filtered (m ) 72.7 99.0 117.0 108.8 64.2 462.5 O j No egge collected 0 0 0 0 0 0 >U No. larvae collected 0 0 0 0 0 0 2 No. Juveniles collected 0 0 0 0 0 0 Z C No. adults collected 0 0 0 0 0 0 C Density (number collected) 0 0 0 0 0 0 F@ Total Station Denalty (h (number collected) 0 0 0 0 0 0 H t" W *$ o tJ 18_.!91 O vol. water filtered 77.6 92.1 90.4 67.2 04.1' 411.4 2 H No. eggs collected 0 0 4 7 0 11 0 No. larvae collected 1 7 0 5 0 12 zO No, juveniles collected 0 0 0 0 0 0 g 3". No. adulta collected 0 0 0 0 0 0 > 'O t-' > Density (number collected) Z y Egge m -< Cyprinidae opp. 0 0 4.42 (4) 10.42 (7) 0 2.67 (11)

O Larvae O

Doroecas cepedianum (YL) 0 1.09(1) 0 0 0 0.24(1) N J g 1 Dorosome cepedianum (EL) 0 1.09(1) 0 0 0 0.24(1) Cyprinus carpio (YL) 0 2.17(2) 0 0 0 0.49(2) Cyprinidae opp. (YL) 0 2.17(2) 0 5.95(4) 0 1.46(6) Perce flavescens (YL) 0 1.09(1) 0 0 0 0.24(1) Unidentifiable (YL) 0 0 0 1.49(1) 0 0.24(1) I Total Station Density 0 7.60(7) 4.42(4) 1/.86(12) 0 5.59(23) (number cc11ected) t F i m

(n M l Od OZ TAB 12 V-H-1 (Continued) 4 Total Collected Date Station 1* Station 2 Station 3 Station 4 station 5 and Taxa Density } 21 June I 3 vol. water filterato (m ) 72.5 108.3 122.8 118.9 81.1 503.6 No, eggs collected 4 34 8 11 1 58 No. larvae collected 0 8 0 1 2 11 N

> U No. juveniles collected 0

0 0 0 0 0 2 No. adults collected 0 0 0 0 0 0 Z C Density (number collected) CO sggs yC Cyprinidae opp. 5.52(4) 31.39(34) 6.51(8) 9.25(11) 1.23(1) 11.52(54) f* @ Larvae mz Cyprinidae opp. (YL) 0 6.46(7) 0 0.84(1) 0 1.59(8) Zm Cyprinidae opp. (EL) 0 0 0 0 2.47(2) 0.40(2) $r O ]3' P Unidentiftable (YL) 0 0.92(1) 0 0 0 0.20(1) ,0 ow total Station Density gd ) (number collected) 5.52(4) 38.78(42) 6.51(8) 10.09(12) 3.70(3) 13.70(69) gmO 1 20 July zO h.g 3 vol. water filtered (m ) 98.2 83.5 100.8 85.8 91.7 460.0 No, eggs collected 0 0 0 1 0 1 r> No. larvae collecte<l 55 10 11 17 40 133 y2 ] No. juveniles collected 0 0 0 0 0 0 m *< No. adults 0 0 0 0 0 0 'O O Density (number collected) y Egge q Cyprinidae opp. 0 0 0 1.17(1) 0 9.22(1) Larvae Cyprinidae opp. (YL) 0 2.40(2) 0.99(1) 6.99(6) 2.06(2) 2.39(11) Cyprinidae opp. (EL) 56.01(55) 9.5818) 9.92(10) 9.32(8) 38.11(37) .25.65(118) Aplodinotus grunniens (EL) 0 0 0 3.50(3) 1.03(1) 0.87(4) Total Station Denalty 1 (number collected) 56.01(55) 11.98(10) 10.91(11) 20.98(8) 41.19(40) 29.13(134) ] l i I 1 l

(A ITl O i dOZ TAbt2 V-H-1 (Continued) Total collected Yearly Total station 1*_ station 2 station 3 Station 4 Station 5 and Tasa Density oo vol. of water filtered (m ) 321.0 382.9 431.8 380.7 321.1 1937.5 3 No, egge collected 4 34 12 19 1 10 g No. larvae collected 55 25 11 23 42 156 2 C No. juveniles collected 0 0 0 0 0 0 g No. adu!ta collected 0 0 0 0 0 0 pC I Density (number collected) mz 2M ,,,e Cyprinidae opp. 1.25(4) 0.88(34) 2.7e(12) 4.99(19) 0.31(1) 3.01(70) 1"* o Doromons cepedir=um (EL) 0 0.26(1) 0 0 0 0.05(1) W _) Larvae C g i A Dorocoma cepedianum (EL) 0 0.26(1) 0 0 0 0.0$(1) O.I* cyprinus carpio (YL) 0 0.52(2) 0 0 0 0.11(2) hH "O i cyprinidae opp. (YL) 0 2.87(!!) 0.23(1) 2.09(11) 0.62(2) 1.36(25) g cyprinidae opp. (EL) 17.13tS5) 2.09(0) 2.32(10) 2.10(0) 12.15(39) 6.53(120) zO Perca flavescens (YL) 0 0.26(1) 0 0 0 0.05(1) HK Aplodinatus grunniens (EL) 0 0 0 0.79(3) 0.31(1) 0.22(4)

> T F '>

l Unidentiftable (YL) 0 0.26(1) 0 0.26(1) 0 0.11(2) N Total station Density g (number collected) 18.38(59) 15.41(59) 5.33(23) 11.03(42) 13.39(43) 12.30(226) m O Nd

Station 1 - South Shorelines Station 3 - Mid-channe13 Station 5 - North Shoreline, 4

Develogmental 5tages YL - Hatched specimens in which yolk and/or oil globules are present. EL - Specimens in which' yolk and/or oil globules are not present and in which fin rays and/or spiny elements have devdloped. } 1 9 i k

SECTION V DUQUESNE LIGHT COMPANY 1982 ANNUAL ENVIRONMENTAL REPORT l the larvae). By taxa, minnow early larvae were the most abundant larval life stage 3 collected (120 individuals; total yearly density = 6.53/100m ). Minnow yolk-sac 3 larvae were the second most abundant stage number 25 individuals (1.36/100m ). The remaining larval taxa collected included gizzard shad (Dorosoma cepedianum), common carp (Cyprinus carpio), yellow perch (Perca flavescens), and freshwater 3 drum (Aplodinotus grunniens); all numbered less than 5 individuals (0.27/100m ). The greatest single sample densities of larvae by species and life stage are listed below. Gizzard shad yolk-sac and early larvae and yellow perch yolk-sac larvae 3 were represented by single specimens (1.09/100m ) collected at Station 2 on 18 3 May (Table V-H-1). Both common carp yolk-sac larvae (2.17/100m ) were also taken at Station 2 on 18 May. Minnow yolk-sac larvae were most abundant 3 (6.99/100m ) on 20 July at Station 4, while early larvae were most numerous 3 (%.01/100m ) at Station 1 on 20 July. Freshwater drum early larvae were only 3 i collected on 20 July and were most abundant (3.50/100m ) at Station 4. I Seasonal Distribution l No ichthyoplankton were collected during the first survey (19 April) (Table V-H-1). 3 3 Samples taken on 18 May yielded 11 eggs (2.67/100m ) and 12 larvae (2.92/100m ). l All eggs collected were minnows; most (82.9%) were taken on 21 June. Greatest 3 density per sample (31.39/100m ) was recorded at Station 2 on this date. Larval catch was comprised of four taxa and one unidentifiable specimen (Table Y-H-1). Most (50.0%) specimens taken were minnow yolk-sac larvae (6 individuals; 3 3 1.46/100m ). Common carp was represented by two yolk sac larvae (2.17/100m ) taken at Station 2 on 18 May. Other taxa collected in May included gizzard shad (one yolk-sac and one early larva) and yellow perch (one yolk-sac larva). The majority (82.9%) of the eggs collected in 1982 were taken on 21 June; all were l minnows (Table V-H-1). All identifiable larvae taken in June were also minnows; 105 l ..-,,--...--r,--.-,,--n,- w,_ _. -,,,,..,,, ,,,,,,,,.,-,,,,,,.,,_.,4...nww .,,.-.n.. ,,,_.,,.w.,,..e,, __,,,,-,,m..., .,,.y.,, -m,,,-,,gn,.

SECTION V DUQUESNE LIGHT COMPANY 1982 ANNUAL ENVIRONMENTAL REPORT most (80.0%) were yolk-sac larvae. In addition, one unidentifiable yolk-sac larvae was collected in June. 3 Collections taken on 20 July resulted in the greatest density (28.70/100m ) of larvae collected in 1982; nearly all (88.7%) were minnow early larvae (Table V-3 3 H-1). Eleven (2.39/100m ) minnow yolk-sac larvae and four (0.87/100m ) fresh-water drum early larvae comprised the remaining larval catch. A single minnow egg represented the total eggs collected on 20 July. Spatial Distribution Eggs were more abundant at midchannel Stations 2, 3, and 4 than at nearshore Stations 1 and 5 (T21e V-H-1). Larvae were generally more abundant at inshore 3 stations. All larvae collected at Station 1 (N=55; 17.13/100m ), the station nearest to the BVPS intake structure, were minnows taken during a single sampling effort 3 on 20 July. Larval catch at Station 2 (N=25; 6.53/100m ) exhibited the greatest diversity of taxa (4); however, most (76.0%) were minnows. Midchannel Station 3 3 yielded the fewest larvae (N=11; 2.55/100m ) of the stations along the transect; all were minnows. Larval densities increased somewhat at Station 4 (N=23; 3 6.04/100m ) and included the highest abundance of freshwater drum larvae (N=3; 3 0.79/100m ) found along the transect; however, most larvae (82.6%) were minnows. Nearly all (97.6%) of the larvae collected at Station 5 were minnows. Freshwater 3 drum, represented by a single early larva (0.31/100m ), was the only other species taken at this station. I Summary and Conclusions The similarity of species composition and relative abundance of ichthyoplankton taken in 1982 along the river transect to those of 1979-1981, combined with the close correlation betwean 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 ichthyoplankton entrainment impact by BVPS in 1982. 1 106 1 . - - - -... ~ -, _, ,_,_m---. --- c. ._.._.,.m

SECTION V DUQUESNE LIGHT COMPANY 1982 ANNUAL ENVIRONMENTAL REPORT 2. Phytoplankton Objective The phytoplankton entrainment study was designed to determine the composition and abundance of phytoplankton entrained in the intake water system. Methods After April 1,1980, plankton sampling was reduced to one ::ntrainment sample collected monthly. Each sample was a 1 gal composite which contained equal volumes of surface and bottom water obtair.ed from one opecating intake bay. In the laboratory, phytoplankton analyses were performed in accordance with procedures described above in Section C, PHYTOPLANKTON. Total densities (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 after April 1,1980 due to a reduction of the aquatic sampling program, therefore, comparison of entrainment and river samples was not possible for the 1982 phytoplankton program. Results of phytoplankton analyses for the entrainment sample collected monthly are pre-sented in Section C, PHYTOPLANKTON. During the years 1976 through 1979, phytoplankton densities of entrainment samples were usually slightly lower than those of mean total densities observed from river samples (DLCo 1980). However, species composition of phytoplankton in the river and entrainraent samples was similar (DLCo 1976, 1977, 1979, 1980). Studies from previous years indicate mean Shannon-Weiner indices, evenness and richness values of entrainment samples were very similar to the river samples (DLCo,1979,1980). 107

SECTION V DUQUESNE LIGHT COMPANY 1982 ANNUAL ENVIRONMENTAL REPORT Summary and Conclusions Past results of monthly sampling of phytoplankton in the Ohio River near BVPS and within the intake structure showed little difference in densities (cells /ml) and species composition. During periods of minimum low river flow (5000 cis), 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 Objective The zooplankton entrainment studies were designed to determine the composition and abundance of zooplankton entrained in the intake water system. Methods Plankton entrainment samples were collected for counting phytoplankton and zooplankton. For 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 a 1 gal composite which contained equal volumes of surface and bottom water. Total densities (number / liter) were calculated fcr 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 after April 1,1980 due to a reduction of the aquatic sampling program, therefore, comparison of entrainment and river samples was not possible for the 1982 zooplankton program. Results of zooplankton analyses for the entrainment sample collected monthly are presented in Section D, ZOOPLANKTON. 108

SECTION V DUQUESNE LIGHT COMPANY 1982 ANNUAL ENVIRONMENTAL REPORT During past years, composition of zooplankton was similar in entrainment and river samples (DLCo 1980). Protozoans and rotifers were predominant, whereas crus-taceans were sparse. Densities of the four most abundant taxa for each month (DLCo,1976,1977,1979,1980) 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 densities (number / liter) and species composition. During periods of minimum, low river flow (5000 cis), about 1.25% of the river would be withdrawn into the condenser cooling system. Based on the similarity of density of zoopisnkton in the 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 coi.ditions. l 109

SECTION VI DUQUESNE LIGHT COMPANY 1982 ANNUAL ENVIRONMENTAL REPORT VL TERRESTRIAL MONITORING PROGRAM A. INTRODUCTION The 1982 terrestrial ecological survey at the Beaver Valley Power Station (BVPS) consisted of a program to detect potential vegetation stress using aerial color Infrared (CIR) photography and subsequent field reconnaissance to determine the cause and extent of any stress. Vegetation stress attributed to natural causes such as disease, insect infestations, i 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 light in the visible green (0.5-0.6 um) and invisible near infrared (0.7-1.0 um) portions of the electromagnetic spectrum (Hilborn,1978). Because the reflectance of near infrared radiation from healthy green leaves is even higher than for green light, reductions in plant vigor will result in changes in reflectivity that 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 have experienced potential stress. Interpretation of the photographs in the laboratory further reduces time and effort by directing field crews to specific locations where the causes of that stress can be determined (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. B. AERIAL INFRARED PHOTOGRAPHY Objectives The objective of this study was to use aerial CIR imagery and ground surveys to evaluate vegetation stress in the vicinity of the BVPS cooling tuwer and to determine if drif t from the tower is adversely affecting vegetative communities of l terrestrial ecosystems (Environmental Technical Specifications, Reference 3.1.3.9). 110 L

Methods (1) Aerial Photography As directed by the Environmental Technical Specifications, an area of 50 square miles comprising a rectangle approximately 7.1 miles on a side and centered on the BVPS cooling tower 4as photographed and ground-truthed during the 1982 terres-trial ecological monitoring program. The photomission was flown on July 21 during the active growing season to ensure maximum contrast between stressed and healthy vegetation. The flight was conducted on July 21 between 1017 and 1155 hours Eastern Standard Tims at an altitude of 2400 feet above mean ground levei. Flight lines were oriented in a north-south direction, and in order to provide stereo coverage, photos were taken with a 60% overlap in line of flight and a 30% sidelap between flight lines. Single-coverage prints were also obtained. The photomission index is shown in Figure VI-B-1. In addition, all photographs were free of cloud shadows, and processing methods and conditions were standardized throughout the project. A flight log was kept in accordance with the Environmental Technical Specifi-cations. The camera used was a Zeiss RMK 15/23, and film was Kodak Aerochrome 2443. Other information in the flight log included serial numbers of camera and lens, film and lot number, filter type, altitude, and date of flight (see Table VI-B-1). A copy of the flight log is provided as Exhibit VI-B-1. (2) Airphoto Interpretation 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 and transferred to a base map. Areas with the greatest potential for being affected by cooling tower drift were designated for ground truthing. Equipment used included: o Zoom Transfer Scope, Bausch and Lomb, Model ZT4 Mirror Stereo Viewer, Airphoto Supply, Model F71E o o Microscope, Bausch and Lomb, Model MC-1 o Elevating Light Table, Richards, Model GFL-940 MCE. 111

l l f ,/ ) 0,dk 1 / c g 2.A 3 If pc fga r .il 3( p.7. mj ~ f(8. % %.' (>6 /- .l. i.- T,%' ~~y. d,

)-

. - g(j s q f A\\ ~q .e g + . m l . k.,( '. a u g,. p

e. -

N h i,w (

g-u

? "g@,;w 3yMX ;' '.s' f.. ryt-. <4-> p"d i.; iM,- s s. L r i./. <>,.;;, >o (sg' j?p '5 $T f 'i ' (6 sg g. 3 w,N. g.te f' c

D

) ( ( L'* I I jt t.( hM l.' I t) ,,.>, 4) ) ke O u<. h )pf ~ 'o ( 4'thV ..)l. .,i Ig f- { c.; N, g I:,p i 1 {: , Q[ - \\ v.. < ;- g sf g /./.f j (>.. ,.j ', 1, C h g'.p' t " sg .r__. 2*

p yk

-( yW. :-'T). % a f-c,)C, o (e,6J "N,,L) jlt / J .C.; ?.'fd4mQ i y g l' ? 1 s 'c. t s d 4

v.,'o:. y..\\..o?.

^ j o n: og.i s )Q. - < n 'y G\\. R:.T

. q:

~,. L.. ,'..k; Y 7L # \\. 4 s k-s I o "5)( f. - & Q l l; [.h.': l g'G ' A I in g; .L }_ y j _ l,=.[. y, ^ tyy %]f),lhlx.g%g..M..\\ hfg@/oj M,(s'[ L {E M ~ [ lRT o j-c'.. 's i m \\

s.

s p g,

A 5 6-g,

.( O p/ 6] M 2---- O no $, h j.,Q T '.- ;f-figis .. y U.A>OW, J fyL/O. S** -[2., ah@g g J J.j75;Qh t- .,4 i -J ,f n - }-ift 7 g%w ',5 s .p 'ch. t g* 64M 1) r - l w 6 M- .i4: t 1 l 4 l LEGEND O l-433 PuoroeRApit rRAME INDEX TO PHOTOGRAPHY j NUMBER AND CENTER BEAVER VALLEY POWER STATION POINT LOCATIONS FOR AND VICINITY INFRARED PHOTOS JULY 2h 1982 2poy ooFEET 4 FIGURE VI-B-1 1 j

e i l ' P,5%'.";.i.y

i.,

,,,N.,i/#,.f4.f. s. $j NE.{ ' 1.. ' h \\. /'.t' . " " '.,gatQ ' {Q'.. $ % jM Q \\WW>b%tW M N = hk.h k f.k t4 f'. ' hhk$ U N i' I'. *k ID dt h*M[ ' ', b ' k' ~64 # -m.

g4 pw x. v,f.

g -1, [.. r 0 - ) h.8,

.t-- q 4 '-',.L%, fit s,.

t, MG 1._ M' .ah ' 47(iei' }y -!/. m ? " % t' G P L,.4!"g$$ lh,f.I Y h 'h e. hees 9h hhN, ?[. k i - 1n. _m .a m 7 .- ~. s ' $ ~ v. tx ~~ v * *

r

? '. J~.2 \\ % (] g .. s I.,~ %,(,' f C

L.g(,yUl -7,. ~l. ],' ~..

^ / b. f' l'*** '-}. ??^b,' W-"' I I i I ' *-4 4 -.x I ~ ' f w; )'a/" S_ n-t; $b, >%%.:#.Jf % s ... ~

f

/ * ,(1>, ;y i .g '-. t A; M /s _2 t. -n, po f _ f,$ s 4 f 'y."s.p t '. 5 _. :" 2 h" \\ o.,

. o*

_..I F'W'~' p,l %' jl', % f d 'l'~ l '. *r s r.,,. _ s. (- l k i

1.. /,

as - -2sa-- --- ) - m _ F '. O Al .a ,,.rs' .M l "Q: s..*.. Q %.\\\\g.$ 3:.3.t,# P. 'n N - 6 ~\\. ly N '*' zw \\ .a v w .w 1 n' '. Q~ -? i 5,,g ( f O 9~---...%. s,; - t. t \\ C jw-a wg 5 ) 'h. h-l '~ t r= w.,, w -w y yv l ,,,si, 7' g . my f. J ~,.f '- _ Q* ~h 's . e w ' 4 $s i. )g1.._.;

. 7. s: sl * %.a,w ip.3 A 'h4

[,,,k s Py=.Qow a ,-~ ~ +, v w c., - - sv f J g..,. f,$ 5 f w*. p, ) N.'y 7....I j ;, ~~'.. I f \\ ,,,f Y ~,, .6e=~

- \\lw*.; { ;.L,I)y.J.,,,

$l' \\. e - c. r. >s, ed,.- _f-w.. ~' m% u. '~.' n j... t % L,['l 3....>. e,,W W '-:.,;d y2 S T j' Q A.i-, , q, }. > T.f,.- J a/f y..e h_,. d '. ' <[ ' )g M h ',[g' k. m. m rs ^ C. o4 fI

i..--

as m ~ I '} .(,; ( (, m_;,k. x;_k2----- \\ .;n 4 n., y S: w,, _ M..,>_i 4, -, r g' ." - ~ - Y $p'M-Ta' Y,/,t+ w & *\\l b,qm h., %. '.. L...j l \\;' ' l h , W 'i. s, ~ w w g. H . ie v ~~ I -s., N, ..* e.. 1 ?g 3 3., q I!,2 fa." g t;.(/,.<V 1 M n o.h,. )> l m.[rf~ Ih . M C, ~,,.".~,..w. 4 a / J' jif I-w .c ~ u 'M i T.~ y Ff\\'...A *! t -'.... t. . T. / n

g. 3i

. ax] d [. [A J h,, . ~j s. L. i ; T,f.:n 7g. y/ g,, :: ~ wy?p. A )r ~7..) M T l/, q. h r. " f , 'y' ' /l,.//, j <' M.(.;. c. .\\ N \\ ....a p i ,/.Yi *p r ,.,/# 0 a .[~ dEM. b. ~ 'Ca, 'r.

p..M,},.

--' h b Q. s.,l\\ "s 9.5.m. ? t .2.. _ - -t a ,-s. r,y,,. _ z i. m - g t l V-v: 1 i

) l TABLE VI-B-1

SUMMARY

OF THE 1982 AERIAL PHOTOMISSION FLOWN IN THE VICINITY OF THE BVPS Specifications Camera: Zeiss RMK 15/23 SN 118992 Lens: Zeiss SN 118992 Focal Length: 153.09 mm Magazine: 118802 Shutter Speed: 1/200 or 1/250 (see Flight Report)

f. Stop: 5.6 Filter: Minus Blue Film Type: Kodak Aerochrome 2443 Film Lot Number: 2443-275-15 Scale: 1" = 400' Photomission Date: July 21,1982 Time: 1017-1155 Eastern Standard Time Altitude: 2400 feet above mean ground level for alllines Weather: Thin cloud overcast at high altitude.

hazy sun, no cloud shadows Time Lines were Flown: Line Start End I 1152 hrs. 1155 hrs. 2 1149 1151 3 1142 1145 4 1140 1142 5 1132 1134 6 1130 1132 7 1122 1125 8 1119 1121 9 1056 1059 10 1053 1055 11 1045 1047 12 1042 1044 13 1034 1037 14 1031 1033 15 1017 1020 113

SECTION VI DUQUESNE LIGHT COMPANY 1982 ANNUAL ENVIRONMENTAL REPORT EXHIBIT VI-B-1 ) KUCERA & ASSOCIATES FLIGHT REPORT ~ 3111 Tat 7-21-82 ROLL # CREW / DATE Film Type 2443 Weath, O Altitude 5.6 M.B. U2%

f. Step p ; g,,,

Shutter Speed Co mere Meposin. Lens CFL Deveteper Time By Date REMARK 5 LOCATION LlHE DIR. ORDER SHOT USED l START STOP O 7 Run Off SS 17916 9 s R 27 7 11 7% 8 N 28 57 202 230 201 7 C

i R R7 174 6

N 88 118 144 172 5 S 119 149 115 143 h 4 150 180 86 114 3 S 181 210 57 85 29 56 ? w 911 9tn 1 S 241 268 01 28 269 33 9 C=;. 771 77L T ee .[ - 114

SECTION VI CUQUESNE LIGHT COMPANY 1982 ANNUAL ENVIRONMENTAL REPORT EXHIBIT VI-B-1 (continued) f KUCERA & ASSOCIATES FLIGHT REPORT Bill Pat 7-21-82 CREW _ f DATE ROLL # Film Type 2443

Weathe, O

Ai,;,,g, 5.6 M. B. U200 g,3,,, p;g,,, Shutter SpeeJ 153.09 118802 Lens CFL Co me r. 118992 g,,,;,, Developer Time By Date REMARKS LOCATION LIN E O!R. ORDER SHOT USED ST ART l STOP u m-nff o A 17916 Midland 15 S 9 22 U se No cth 3: FA 15 S 23 45 404 433I la M 47 76 374 401 13 S 77 107 345 373 17 w inR 11R 11A tLa 11 S 139 169 288 315 10 N 170 198 260 287 200 Test 9 5 201 218 D at of Film i 115

SECTION VI DUQUESNE LIGHT COMPANY 1982 ANNUAL ENVIRONMENTAL REPORT (3) Field Reconnaissance General observations of the BVPS and vicinity were conducted from September 20 .through 23 and again on September 25 to verify the photointerpreted results that had indicated potentially stressed vegetation. The 9" x 9" CIR prints were used in conjunction with the photoindex (Figure VI-B-1) and standard USGS 7.5-minute topographic sheets to construct preliminary base maps and to locate areas suspected of containing stressed vegetation. Where possible, vegetation was closely examined to determine the cause of stress. When vegetation was 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 documented and, in some instances, photographed. (4) Vegetation Mapping A final map indicating the location and distribution of vegetation stress was constructed from the base maps and results of the field survey (Figure VI-B-2). This rnap can be compared with similar maps from previous BVPS vegetation monitoring results to note trends in type, location, and extent of vegetation stress. Results The 1982 photographs were better exposed than the results from 1980, which were slightly overexposed. Color saturation was generally good on all frames. Photos taken earlier in the morning showed somewhat greater shadowing due to the lower angle of the sun and the hilly terrain. Some overexposure occurred in photos taken near the end of the photomission due to the high reflectivity of the sun on objects such as highways, plowed or bare fields, and rooftops. Such effects were minor and did not alter the ability to detect stress. As shown in Figure VI-B-2, a number of vegetated areas experienced some form of stress. These areas are identified by letters on the map, each letter representing a particular stress type. As indicated on the map, major causal factors of stress included insect damage, disease, overcrowding, poor drainage, erosion, herbicide kill, and construction. Due to inaccessibility, the stress in many areas had to be 116

r i a 'r; _. :x j . y 5 f,p'. - e S* f.....a ~ .L.- J., y= s .'c, g,s, ; ,. y g .n, '. -,c...- ,=, .~..-..

.9

.t...... c, o .w <3 .:.. g r. _ -._ e+.. n. # -..;._. . a,. g%,. 1 *p -s..%.. y. C: i e.

7

' =f. L en - i ,t. 2-i % g., a a

,. N a u4

-v. '/r. sy-ll. =, g. . :,r., >g ...r e ? W '. $ x{ b_- ^,. ev *. ' ;. h'%. ., ',. f 9.c) :-(,. ,., x e .e.,.,. ^. C;b j l',. O y =y Y .A >= f-t.. y[$ -;,. s 7 bw ~.. -r. m -,; 6 2 O . f.. ?. 7' .,,-....,.(f o ,.n s .w

e*,-

J? .,/. ,g es 3 _ lh f ~ *. 'q -{< ,f ,r.. C ). t, '. ' U I3 h .;.j :,g-Jf*pve. I ;,,.hi s, yJ-35 f La " 4 :: :'.2*..x l h j> ., e u e ...c.- .__n ,? O,,. . -._ -. &;wjat- .,m. ;.c,

f. ;g b.

?.. - )- / .4.#1, y, w &.u 1A g\\>.m j..,. i_; g g. -, __, . _, y ~g < %...e,._2,,.,,;,- y n ..y.4 .. 4 n.,,a ~= -.- ,_.,e.,,;'6. ., ~ 'g e. n. -- g. y. . -w e' . y[/f,k'~ p' jlE /- ~

C 'u,'L.

~ 4 4, %,,:q "e.< %g.g Atig : , y.e $ m. y, .m1 ,3 s u m~l A. % W W :f, hh fe m* Q 5 % ; A. : . s. r a. h ' ~9. fy f rh ~ .n l%f I l 1 i I i - , A ~.,.~.-.A.pe.%n,,,cm,p$x.j go.t s.;, ,,, c,,,, a-

r,..

,f, } y7 e o r. .e,} s.n u.- e-o ka-Y g;g:g y y 'k-g ca., [. i s~ ; s 3; W; 4[ %,. y.e.c-1-R. n.4,a #..:8.j

i ?q-
%,%,k< M, J

,y ~. _.n n. v.~ m a ,P.. -.g.9,9 7 4 c.n g M @...$,+,t i:p!: esoa.w M M --. gw= o> T.[ E .n :. ; '. m y, v =.,..n 2, w 4 ,.4 y. u' , :.,.*-l<f. c r ., f.f ./: -l af 4 ',j - g. ..c d Oo 9. ,.,4. ,:.9, d,& N. ,;I s 6, wg a .f f y 3.y-,t,.. -,;.'gi [. W1b: }, ;a. - g h Y, ') -.. 4 N '7* / I t.- e ,b . ~.

-_.m

.e ss_ .s ,3;.W. y i .g, &. v. y-Q &. f, -b. gw*$ c . < 4. *,,.

s. p.

/, 9 i a. y g , ~. .,.,.c- ..>...x..., ) ,w a-af a s 3 o,z ..e ep 4- + 4,5 cc.c g. /- 3 ..o.,. I . - - ~ -.c . -,. - ~.... = =~--,---,a,,_

\\ l 4 i .7"r j q&,CQ1 - s a - f.,,.,e.,. m, %,2s. -4 e[ c. M r 1y ;., J- 'J ": ~ '( 2. Lhs* ',,,.;, ', ~ 4 \\' "a % ?.8 h. y:.'.*{,_ j j't, n

{
f{,.' '... )

~ m h'. ! 2. r: .n _r, ; A. R u .., a. - -s-a i . v. J ta m "q = g i,...,;I,q' ' v: N4, '..../ s .g iI : N...I~.,~-'.~'%,MN se 'T ..gf. s .pga> ~ D -;.'.. '. s.._ r ',-. -; %...g.)f. g.. k.,. - U. e g Qd. n y * "'9' R_ ;y:QL. q g t

L -

a. : )Q

.t . J.

- ;h '&. _, K - Q. <
/*

4 4.: \\ g. i '*;;&y8 *. . " _ff : 'I? - .t Ic i 5 ~ .. h ?h&. :f*!u - t - m

f., r... - lf, f.,

Q j. g..*p" s \\T "..,_). '. 4 : .)._,;*g ~ .~

O

\\ -- f-), R f,. .I'.b'.T N. &',h::... '. \\ ..,J. ? .,,,[ ' N1 s' S - ~ <N Us .s :-

~m-a,,

y ;n ,7.

g. o,

q J

. '.y \\.h.

#[y a

g- '%. ,,. e n" ' :2 y - - --.~ g.. g - s.. o 'r f,? ~ K f4,j>. m., * ;. % . wf I;. d. \\l' w' 'y. ~ u y\\ 'r. a ,2

s. 4 Q

,:ya-. ^ _. - 1 ..,f y' I .T .. sf ..,... M-v % < s. ..y M .n, .. ~. - -- :... 7.*., N e ~~ . y' M e ,,W ~ , \\...}.//f,r: $.Y .e N.' ' _ (;"gfy .,. / ' ,~ ? -l,c Q% s '.t*1% y L ' ll N $, :,h 'v$hV W *f.'y]- 'k ? ~ h w % W- -f. E**.;. Y

I

<b s g. e g X. I, r,g.+y w i. -. -;e, ,, p s., . p. W - k. %..

e p g b.. s.. %.'

a w.:..... g', g b t'l'.7..:-E '4; (. gs h- - -p. f f . *.. -y, ' 4',Qs ,1 ,g 1 S i f, y fgp.;.S-

~f.:.\\..~ L.k. _.

.w. f ~l,y i . d.Q-

f... c..;

ff..lg,ht % s i, ac z. [,c[ [,I M./. p,..j &. 5 1. 5r p' ,* 1l W. j ' 6 D ~t., ' 1.c.<f? ,, i s m / y*. ; e,f+.,i, af, ~. ' \\;c1 I* %s ~/

s. ' ;,, f '~ ~ '

l \\ g - 5 s .;;.4* s - }e,.,,. g%: , _y -, m l x ,ri 4 - ~ $.:4"p. n. 4 p, p '

,,- p' ',,

0;.. 3_. /,. , et,., a } sd "@ M' k hs d s e 4.3' W,y *lg)p,.4... ;;, f' t 3 > /y i.] ~ ;l, A .a A. 3.. ,..,.4 .y. i k Q b.. f y.J-

i

' { ' Q,,= ~z, 'd l I a

SECTION VI DUQUESNE LIGHT COMPANY 3 1982 ANNUAL ENVIRONMENTAL REPORT labelled unidentified. It is most likely that such stress followed the general trends of the region. Twelve major stress types distributed over 819 individual areas were identified and observed in the field. A number of the larger areas also contained more than one type of stress, thus, the total number of occurrences of stress investigated was 982. These ranged in size from small clumps of trees less than an acre in extent to relatively large blocks of woodland from 20 to 60 acres. Numerous individual trees were probably stressed throughout the area under investigation, but in most cases, only larger groupings were delineated on the base map and visited in the field. Natural Causes Of the %2 occurrences of stress, 519 (or 53.85%) of the occurrences were identified as the result of natural causes (Table VI-B-2). These were divided into six categories discussed below: fall webworm, locust leaf miner, Dutch elm disease, poor drainage and/or periodic flooding, overage (overmature), and overcrowding. The letters in parentheses correspond to the map identifications. Fall Webworm (A) Two hundred forty-nine areas contained trees damaged by fall webworm (Hyphantria cunea). These areas were generally scattered throughout the region under investigation. Johnson and Lyon (1976) indicate tnat this lepidopteran has j attacked as many as 88 species of shade, fruit, and ornamental trees (excluding conifers) in the United States. In the vicinity of the BVPS, fall webworm damage i was most extensive in wild cherries (Prunus serotina and L avium), hickories l (Carya spp.), and to a lesser extent, American elm (Ulmus americana), sycamore (Platanus occidentalis), willow (Salix spp.), and black locust (Robinia pseudoacacia). j 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 silk webs l over foliage on the ends of branches and skeletonize the leaves as they feed (Borror l and White,1970; USDA,1979). Because defoliation occurs late in the growing l i 118 l

SECTION VI DUQUESNE LIGHT COMPANY 1982 ANNUAL ENVIRONMENTAL REPORT ) TABLE VI-B-2 TYPE AND FIUQUENCY OF VEGETATION STRESS IN THE VICINITY OF THE BEACR VALLEY POWER STATION, 1982 ECOLOGICAL MONITORING PROGRAM Vegetation Stress Cause Occurrence Percent A Fall Webworm Natural 249 25.36 B Locust Leaf Miner Natural 89 9.06 C Dutch Elm Disease Natural 3 0.31 D Dead / Decadent / Thin-crowned Trees Unknown / Natural 123 12.53 E Poor Drainage / Periodically Flooded Natural 47 4.79 F Necrosis Unknown 11 1.12 G Unidentified Disturbance Unknown 412 41.96 H Heavy Equipment Activity Human 19 1.93 I Erosion Human 5 0.51 J Utility Corridor Maintenance Human 13 1.32 K Logging Activity Human 3 0.31 L Overgrown Woodlot Unknown / Natural 8 0.81 982 100.00 Note: Refer to Figure VI-B-2. 119

SECTION VI DUQUESNE LIGHT COMPANY 1982 ANNUAL ENVIRONMENTAL REPORT season, damage is of minor importance in forestry because the tree is seldom killed; infestation in ornamental plantings sometimes affects aesthetic values enough to warrant control (Baker,1972). Since the overflight took place in late ~3uly, vegetation stress was far more severe in the field than had appeared in the i aerial photos. Locus Leaf Miner (B) In comparison with the 1980 vegetation stress survey, locust leaf miner (Xenochalepus dorsalis) was of minor importance. A total of 89 occurrences of stress caused by locus leaf miner was documented. This amounted to slightly more than 9% of the total occurrences of stressed vegetation. One large area approximately two miles north of Midland and another on Phyllis Island showed major damage. During previous years, whole ridges, hillsides, and woodlands were infested with this pest. Outbreaks of locust leaf miner occur practically every year in western Pennsylvania, and tens of thousands of acres are often defoliated (Baker,1972; USDA,1979). The locus 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, dogwood (Cornus sp.), 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, t forming a mine. When stands of locust are infested, they appear brownish as l though dead, but late summer defoliation is usually not harmful (Hepting,1971). Dutch Elm Disease (C) l l Dutch elm disease, caused by a fungus (Ceratocystis ulmi) carried by the native l elmbark beetle (Hylurgooinus rufipes) and the European elm bark beetle (Scolytus multistratus), was observed in three bcations. This number was the same as that observed in the 1980 survey. 1 + 120

SECTION VI DUQUESNE LIGHT COMPANY 1982 ANNUAL ENVIRONMENTAL REPORT ~ Poor Drainame/ Periodically Flooded (E) Evidence of stress caused by poor drainage or flooding occurred in 47 locations. These were primarily small areas along drainage courses or in the lower, elevations of forested wetlands. According to Levitt (1972) excess water is not a stress in itself. Flooding, however, gives rise to two secondary stresses-tu'rgor pressure stress and oxygen-deficient stress--and tertiary ionic stress from buildups of toxic manganous and ferrous ions. In addition, stressed vegetation may then become more susceptible to injurious insect and disease attacks (Treshow,1975). Dead / Decadent / Thin-crowned Trees and Overgrown Woodlots (D and L) Stress attributed to decadent (overmature or overage), overcrowded, and over-grown conditions was observed in a total of 131 locations. This represents about 13% of the total meas investigated. The loss of vigor due to inter-or intraspecific competition and the inability to tolerate changing conditions may have led to eventual death or to accelerated death from insect infestations or disease outbreaks erkanced by overcrowding. Human Activities Forty of the 982 (4.07 %) occurrences of stress noted during the 1982 monitoring program were attributed to human activities. These consisted of heavy equipment activity, induced erosion, utility corridor maintenance, and logging. Heavy Equipment Activity (H) Activities using heavy equipment resulted in the stress or removal of vegetation in l 19 locations. New road construction was occurring along Route 68 and in an f undeveloped area about a half-mile north of Midland. Vegetation removal for mining was taking place in several locations from two to three miles north of Midland and about three miles southwest of the BVPS. One relatively large area along the Ohio River at Ohioview was being developed, resulting in extensive vegetation removal. Two areas, one just west of the BVPS and another one adjacent to the Hookstown Grange and Racetrack had been previously disturbed, but were being revegetated with grass. l l 121

SECTION VI DUQUESNE LIGHT COMPANY 1982 ANNUAL ENVIRONMENTAL REPORT Erosion (I) e Erosion due to construction activities was occurring in two locations in Ohioview, ,in one location along the Ohio River across from Ohioview, and in two locations in the vicinity of Midland. These areas were all relatively small in extent. Utility Corridor Maintenance (3) Herbicide use to maintain utility corridors occurred in two locations. The first was located approximately one mile east of Midland and extended about two and a half miles in a north-northwest direction. Ten individual plots had been treated. The second location, in which three plots had been treated, was a much smaller area about three miles east of the BVPS. Logging Activity (K) Three logging operations were identified during the survey. One large area of about 15 acres was located a mile south of the BVPS while the other, smaller areas were several miles east and southwest of the station. Unidentified or Unknown Causes The causes of vegetation stress could not be identified in 423 of the 982 instances of disturbance. This was due to a combination of factors including inaccessibility, budget limitations, or inability to adequately ascertain the cause or causes of stress. Necrosis (F) (. Evidence of coniferous necrosis was observed in 11 locations. Possible causal j factors included overcrowding, airborne 50 and ozone, and/or runoff or spray 2 I containing road deicing salts. Conifers are highly susceptible to overcrowding and l pollutants (Jacobson and Hill, 1970; Moxley and Davidson, 1973; Mudd and Kozlowski, 1975). The possibility of a combination of factors (Treshow,1975) resulted in categorizing the cause of coniferous necrosis as unknown. 1 122

SECTION VI DUQUESNE LIGHT COMPANY 1982 ANNUAL ENVIRONMENTAL REPORT Unidentified Disturbance (G) Nearly 42% of the occurrences of stress could not be accurately identified. ,However, due to their random distribution and variable sizes, it is most likely that the majority of the stressed areas were the result of insect infestations, particu-larly fall webworm and locust leaf miner. One additional occurrence of unidentified stress, labelled G-1 on Figure VI-B-2, is represented in six orchards where individual trees have been stressed. No cause of this stress was apparent, although overmaturity may be a possible explanation. / Summary and Conclusions During the summer and fall of 1982, vegetation stress was monitored in the vicinity of the Beaver Valley Power Station cooling tower as part of an Ecological Monitoring Program. Color infrared aerial photography, photointerpretation of the imagery, and field observations were used to detect stressed or damaged vegeta-tion and to determine probable causes. Evidence from the photography and fieldwork indicated that the majority of occurrences of vegetation stress was due to natural causes including insect infestation (fall webworm and locust leaf miner), disease (Dutch elm disease), poor drainage in low areas, overcrowding, and overmaturity. Extensive areas of unidentified stress were also delineated. Several coniferous species showed stress caused by possible air pollution (50, ozone), salt damage from adjacent public 2 roadways, and/or overcrowding. Human activities resulting in vegetation damage or stress included heavy construction, erosion, utility corridor maintenance, and logging. Of the 982 identified and delineated occurrences of stress, over 32% were probably caused by natural factors. Forty-three percent of the occurrences were cate-gorized as unknown; the majority of these areas could probably be assumed to be of natural causes. Less than 3% of the occurrences were attributed to human activities. 123

4 SECTION VI DUQUESNE LIGHT COMPANY 1982 ANNUAL ENVIRONMENTAL REPORT Based on interpretation of the CIR aerial photography and field verification, there is no evidence to suggest that the BVPS cooling tower is 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, although not impossible, to measure the actual contribution of the BVPS cooling tower drift to the effects. ) It is also possible that the BVPS cooling tower is subtly affecting local microcli-matic systems with its inputs of moisture and heat. Damaged vegetation from winter ice buildup would have been a diagnostic measure of this effect, but there ~ was no evidence of heavy limb fall or structural damage in the photographs or field observations. Enhanced conditions for the propagation of insects or disease organisms might have been another result of microclimatic modification, but the study of such phenomena was beyond the scope of this program. 4 l l i f l 124 i -,,. -,...,. ~., - - -. -, -, _.,,,,... _ _.. _. _. _ - - _. _, _ _. _.. - ,_.m.,,. ___,..__.m-.__.

SECTION VII DUQUESNE LIGHT COMPANY 1982 ANNUAL ENVIRONMENTAL REPORT Vll. REFERENCES Baker, W. L.,1972. Eastern forest insects. USDA Forest Service Misc. Publ. No. 1175. Washington, D.C. Borror, D. 7. and R. E. White,1970. A field guide to insects of America north of Mexico. Houghton Mifflin Co., Boston. Commonwealth of Pennsylvania, 1980. 1981 Pennsylvania Collectors Permit. Dahlberg, M. D. and E. P. Odum,1970. Annual cycles of species occurrence, abundance and diversity in Georgia estuarine fish populations. 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 #1. Duquesne Light Company, Beaver Valley Power Station.149 pp. DLCo, 1980. Annual Environmental Report, Non-radiological. Duquesne Light Company, Beaver Valley Power Station, Unit No.l.160 pp. EPA, 1973. Biological field and laboratory methods. EPA-670/4-73-001. Cincinnati, OH. Hepting, G. H.,1971. Diseases of forest and shade trees of the United States. USDA Forest Service Handbook No. 386. Washington, D.C. Hiiborn, W. H.,1978. Application of remote sensing in forestry. h: Introduction to t remote sensing of the environment. B. F. Richason, Jr., ed. Kendall/ Hunt, Dubuque, Iowa. Hutchinson, G. E. 1%7. A treatise on limnology. Vol. 2, Introduction to take 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, 3. S. and A. C. Hill,1970. Recognition of air po!!ution injury to vegetation: a pictorial atlas. Air Pollution Control Association, Pittsburgh, Pennsylvania.112 pp. Johnson, W. T. and H. H. Lyon,1976. Insects that feed on trees and shrubs, Comstock Publishing Associates, Ithaca, New York. 464 pp. 125 L.

l SECTION VII DUQUESNE LIGHT COMPANY l 1982 ANNUAL ENVIRONMENTAL REPORT Levitt, 3.,1972. Responses of plants to environmental stresses. Academic Press, 1 New York. 697 pp. Mercy, B. C,1976. Planktor.ic fish eggs and larvae of the lower Connecticut River and the effects of the Connecticut Yankee Plant, including entrainment. h: D. l Merriman and L. Thorpe (eds.), The Connecticut River ecological study: the impact of a nuclear power plant. Am. Fish. Soc. Monogr. No. 1,115-139. J Moxley, L. and H. Davidson,1973. Salt tolerance of various woody and herbaceous plants. Horticultural Report No. 23. Michigan State University, Department of Horticulture, East Lansing, Michigan. Mudd, 3. B. and T. T. Kozlowski,1975. Responses of plants to air pollution. Academic Press, New York. 383 pp. Pielou, E. C,1%9. An introduction to mathematical ecology. Wiley Interscience, Wiley & Sons, New York, NY. r Robins, C. R., R. M. Bailey, C. E. Bond, 3. 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. Soc. Spec. Publ. No. 12:1-174. Scott, W. B. and E. 3. 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. h: Responses of plants to air pollution. 3. 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 i diseases of forest trees in the northeastern United States. Forest Insect and Disease Management NA-FR-4. Forest Service. Northeastern Area, State and j Private Forestry, Broomail, Pennsylvania.126 pp. Winner, 3. M,1975. Zooplankton. h: B. A. Whitton, ed. River ecology. Univ. l Calif. Press, Berkeley and Los Angeles. pp. 155-169. 1 J v 4 12'6 ...}}

ML20073B019

Contents

Text

SUMMARY

SUMMARY

SUMMARY

SUMMARY

SUMMARY

SUMMARY

SUMMARY

SUMMARY

Navigation menu

ML20073B019

Text

SUMMARY

SUMMARY

SUMMARY

SUMMARY

SUMMARY

SUMMARY

SUMMARY

SUMMARY

Navigation menu

Search