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Ecological Studies at Oyster Creek Nuclear Generating Station,Progress Rept,Sept 1980-Feb 1981
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Site:	Oyster Creek
Issue date:	05/31/1981
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Ecological Studies at Oyster Creek Xuelear Generating Station Progress Report September 1980-February 1981 Prepared for Jersey Central Power & Light Company l

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PROGRESS REPORT OF ECOLOGICAL STUDIES l

AT THE j

OYSTER CREEK NUCLEAR GENERATING STATION, l

SEPTEMBER 1980 - FEBRUARY 1981 l

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Jersey Central Power & Light Company Madison Avenue at Punch Bowl Road Morristown, New Jersey 07960 l'

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f Prepared by E 'ogical Analysts, Inc.

Hunt Valley /Loveton Center 15 Loveten Circle Sparks, Maryland 21152 May 1981

CONTENTS Page EXECUTIVE

SUMMARY

1.

INTRODUCTION 1-1 i

2.

METHODS 2-1 2.1 Barnegat Bay Fisheries 2-1 j

2.2 Impingement 2-1 l

23 Entrainment 2-2 2.4 Commercial Catch Data 2-3 2.5 Fish-Kill Monitoring 2-3 2.6 Water Quality Measurements 2 -4 27 Data Processing 2-4 l

3 COMPOSITION AND ABUNDANCE OF FINFISH AND I

SHELLFISH IN BARNEGAT BAY 3-1 31 Trawl Data (4.9-m) 3-1 32 Seine Data (45.7-m) 3-2 33 Seine Data (12.2-m) 3-3 34 External Parasites, Disease, and Morphological Abnormalities 3-4 35 Water Quality Data Associated with l

Barnegat Bay Fisheries Studies 3-4 l

4.

IMPINGEMENT OF FINFISH AND MACR 0 INVERTEBRATES f

ON THE INTAKE SCREENS 4-1 4.1 Biological Data 4-1 4.2 Water Quality Data Associated with Impingement Sampling 4-3 5

ENTRAINMENT OF ICHTHYOPLANKTON 5.1 Biological Data 5-1 5.2 Water Quality Data Associated with Entrainment Sampling 5-2 6.

MACR 0 INVERTEBRATE ENTRAINMENT 6-1 7

COMMERCIAL LANDINGS OF FINFISH AND SHELLFISH 7-1 8.

FISH-KILL MORITORING G-1

CONTENTS REFERENCES l

i Appendix A: List of Scientific and Common Names of Finfishes Encountered During Barnegat Bay Fisheries Impirgement and Entrainment Sampling, September 1980 - February 1981 Appendix B: Otter Trawl Data Appendix C: 45 7-m Seine Data I

Appendix D:

12.2-m Seine Data 1

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i LIST OF FIGURES

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Number Title 1-1 Map of the middle portion of Barnegat Bay showing trawling and seining locations.

2-1 Diagram of the intake and discharge of the circulating water sys-tem and the dilution pungs at the Oyster Creek Nuclear Generating Station.

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LIST OF TABLES Number Title 3-1 Total number, percent composition, and cumulative percent of fish and macroinvertebrates collected by otter trawl in Barnegat Bay, September 1980 - February 1981.

3-2 Mean number per trawl haul of sand shrimp, blue crab, summer flounder, winter flounder, and bay anchovy, Barnegat Bay sampling, September 1980 - February 1981.

3-3 Length-frequency distributions of blue crab, summer flounder, winter flounder, and bay anchovy collected by otter trawl in Barnegat Bay, September 1980 - February 1981.

3-4 Total number, percent composition, and cumulative percent of fish and macroinvertebrates collected by 45.7-m seine in Barnegat Bay, September 1980 - February 1981.

3-5 Mean number per seine haul of sand shrimp, blue crab, bluefish, bay anchovy, and Atlantic silverside, Barnegat Bay sampling, September 1980 - February 1981.

3-6 Length-frequency distributions of blue crab, bluefish, bay anchovy, and Atlantic silverside collected by 45.7-m seine in Barnegat Bay, September 1980 - February 1981.

3-7 Total number, percent composition, and cumulative percent of fish and macroinvertebrates collected by 12.2-m seine in Barnegat Bay, September 1980 - February 1981.

3-8 Mean number per seine haul of sand shrimp, blue crab, bay anchovy, and Atlantic silverside, Barnegat Bay sampling, September 1980 -

February 1981.

3-9 Length-frequency distributions of sand shrimp, blue crab, bay anchovy, and Atlantic silverside collected by 12.2-m seine in Barnegat Bay, September 1980 - February 1981.

3-10 Surface water quality measurements associated with Barnegat Bay seine sampling, September 1980 - February 1981.

3-11 Bottom water quality measurements associated with Barnegat Bay otter trawl sampling, September 1980 - February 1981.

4-1 Total number collected, percent composition, and cumulative percent of finfish, other vertebrates, and macroinvertebrates impinged at the Oyster Creek Nuclear Generating Station, September 1980 - February 1981, i

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LIST OF TABLES (CONT.)

Number Title 4-2 Weekly estimated number of selected species impinged on the Oyster Creek Nuclear Generating Station traveling screens, September 1980 -

February 1981.

4-3 Weekly estimated weight of selected species impinged on the Oyster Creek Nuclear Generating Station traveling screens, September 1980 -

February 1981.

4-4 Total estimated number and weight with 80 percent confidence inter-vals of key and abundant species impinged at Oyster Creek Nuclear Generating Station, September 1980 - February 1981.

4-5 Total number per 12-hour period and percent composition of finfish and macroinvertebrates impinged during the night and day at the Oyster Creek Nuclear Generating Station, September 1980 - February 1981.

4-6 Mean water temperature values during night and day impingement sampling at the Oyster Creek Nuclear Generating Station, September 1980 - February 1981.

4-7 Mean dissolved oxygen values during night and day impingement sampling at the Oyster Creek Nuclear Generating Station, September 1980 - February 1981.

4-8 Mean salinity values during night and day impingement sampling at the Oyster Creek Nuclear Generating Station, September 1980 -

February 1981.

4-9 Median pH values associated with impingement sampling at the Oyster Creek Nuclear Generating Station intake, September 1980 -

February 1981.

5-1 Mean sample density, percent composition, and cumulative percent of ichthyoplankton collected at the intake and discharge of the Oyster Creek Nuclear Generating Station, September 1980 - February 1981 5-2 Monthly mean sample densities and percent composition of ichthyo-plankton collected at the Oyster Creek Nuclear Generating Station, September 1980 - February 1981.

5-3 Mean sample densities and percent composition of ichthyoplankton collected during 24-hour studies at the Oyster Creek Nuclear Generating Station, September 1980 - February 1981.

5-4 Number of live, stunned, and Ccad specimens of four taxa collected in entrainment samples at the Oyster Creek Nuclear Generating Station, September - October 1980.

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LIST OF TABLES (CONT.)

Nu 2er Title 5-5 Estimated numbers of key and abundant ichthyoplankton entrained at the Oyster Creek Nuclear Generating Station, September 1980 -

February 1981.

5-6 Mean water temperature measurements associated with entrainment sampling at the Oyster Creek Nuclear Generating Station, September 1980 - February 1981.

5-7 Mean dissolve'd oxygen measurements associated with entrainment sampling at the Oyster Creek Nuclear Generating Station, September 1980 - February 1981.

5-8 Mean salinity measurements associated with entrainment sampling at the Oyster Creek Nuclear Generating Station, September 1980 -

February 1981.

5-9 Median pH measurements associated with entrainment sampling at the Oyste Creek Nuclear Generating Station, September 1980 - February 1981.

6-1 Mean sample density, percent composition, and cumulative percent of macrozooplankton collected at the intake of the Oyster Creak Nuclear Generating Station, September 1980 - February 1981.

6-2 Mean sample density, percent composition, and etumtlative percent of macrozooplankton collected at the discharge of the Oyster Creek Nuclear Generating Station, September 1980 - February 1981.

6-3 Monthly mean sample densities and percent composition of macrozoo-plankton collected at the discharge of the Oyster Creek Nuclear Generating Station, September 1980 - February 1981.

6-4 Monthly mean sample densities and percent composition of macro-zooplankton collected at the intake of the Oyster Creek Nuclear Generating Station, September 1980 - February 1981.

6-5 Estimated numbers of key and abundant macroinvertebrates entrained at the Oyster Creek Nuclear Generating Station, September 1980 -

February 1981.

7-1 Total reported commercial landings and value-of finfish and shellfish taken from Ocean County, New Jersey, September 1980 -

January 1981.

7-2 Total reported commercial landings and value of finfish and shell-fish taken from Atlantic County, New Jersey, September 1980 -

January 1981.

LIST OF TABLES (CONT.)

Number Title 8-1 Chronological summary of activities and findings associated with fish-kill observations at the Oyster Creek Nuclear Generating Station, September 1980 - February 1981.

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EXECUTIVE

SUMMARY

Aquatic monitoring was conducted at the Oyster Creck Nuclear Generating Sta-tion (OCNGS) and vicinity from September 1980 - February 1981.

The program comprised five discipline elements:

studies of fish and macroinvertebrates at four stations in Barnegat Bay, impingement of fish and macroinvertebrates on the OCNGS traveling screens, entrainment of ichthyoplankton and macro-invertebrates into the OCNGS cooling system, commercial fish landiags in Atlantic and Ocean counties, and fish-kill monitoring in the OCNGS discharge.

The monitoring programs were carried out pursuant to Appendix B Oyster Creek Nuclear Generating Station Technical Specifications, issued to Jersey Central Power & Lic %t Company by the U.S. Nuclear Regulatory Commission, effective 6 June 1979. This is the third in a series of reports prepared by Ecological Analysts, Inc. for Balfillment of aquatic monitoring requirements of the OCNGS Technical Specifications.

Campling in Barnegat Bay was carried out monthly, with each station sampled twice during day and twice during night with each of three gear: 45.7-m seine,

i 12.2-m seine, and 4.9-m otter trawl.

Impingement collections were made for a 24-hour period once each week by securing all or known portions of the screenwash from all operating screens. Paired entrainment samples were taken two hours after sunset at both intake and discharge weekly in September and October and every other week from November through February.

Once each month, a 24-hour entrainment study was conducted.

Collections were made with 36-cm diameter bongo nets with 505-pm mesh netting.

In September and October, the entrainment samples were examined for live and dead fish larvae immediately after collection.

Commercial fish landing data for the OCNGS environs were obtained from the National Marine Fisheries Service.

Fish-kill monitoring l

involved observation, collection, and processing of dead fish, a tag-recapture experiment, trawling in the discharge canal, e M water quality measurements.

Water quality oensurements (water temperature, dissolved oxygen, pH, and sal-I inity) were made in conjunction with all biological sampling.

g All field collections were processed as dictated by the Quality Assurance Procedures Manual for the Oyster Creek Project and the Technical Specifica-tions.

Data were entered on fielo data sheets and subsequently keypunched and entered onto a PDP-11/70 computer system. Summary programs were run and the output from many of those are incorporated in this report.

In addition, total impingement and entrainment abundance estimates were computed with 80 percent confidence intervals. A fish-kill estimate was computed using a mark-recapture model.

The data displays and text constitute only a data report, or progress report of data collections; interpretive analyses of data collected from September 1980 - August 1981 are to be provided in the annual report.

i The majority of organisms captured ir. Barnegat Bay were macroinvertebrates, primarily sand shrimp, grass shrimp, blue crab, and xanthid crab juveniles.

The most abundant finfish were bay ane"tyy, Atlantic silverside, and fourspine stickleback.

Catches of many specie <, '.3

, bay anchovy, summer flounder, and blue crab, decreased with lowTd;4s st e temperature throughout the ebly sand shrimp and winter flounder, study period. Several species-

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r increased in abundance with coiE.- L

-3tures.

Organism abundances varied aoong stations, but were consistAntly grea;er at night.

The length-frequency i

analyses revealed that most organisms occurect; in the catches as a mixture t

of young and adult forms.

No evidence of serious parasitism or disease of fish or macroinvertebrates was noted. Water quality measurements provided typical seasonal ranges:

water temperature 0.0-29.3 c, dissolved oxygen 5.1-15.5 mg/ liter, pH 7.5-8.3, and salinity 15.0-30.6 ppt.

The impingement of organisms on the OCNGS traveling screens followed a pattern similar to the Barnegat Bay catches. The dominant organisms were macroinverte-brates with sand shrimp, grass shrimp, and blue crab constituting 87.9 percent of impinged organisms. The Atlantic silverside and naked goby were the most abundant finfish impinged. Summer flounder, weakfish, and bluefish were more abundant during the first half of the study period, while sand shrimp and winter flounder were impinged in greater numbers dLeing the second half of the study period. Several species, i.e., bluefish, blueback herring, Atlantic menhaden, Atlantic silverside, and northern pipefish, peaked in abundance in the middle part of the study period (late October - early December). Night It was impingement catches were about four times as great as day catches.

estimated that 5.5 million organisms were impinged from September 1980 -

February 1981; of this total, 4.2 million were sand shrimp. Water quality data for impingement were similar to those described above for Barnegat Bay.

Entrainment sampling revealed that winter flounder eggs and larvae and Amer-ican sand lance larvae were the most abundant ichthyoplankton.

These forms, together constituting 92.7 percent of all entrained ichthyoplankton, were collected primarily in January and February. The collections during September and October were composed of relatively low numbers of larvae and juveniles of summer spawners such as bay anchovy and northern pipefish.

Ichthyoplankton densities were quite low from November through early December.

Na differences in ichthyoplankton densities were noted between day and night except for winter flounder eggs in February night collections; this was attributed to the extru-sion of unfertilized eggs from impinged ripe females.

In general, viability studies during September and October revealed a greater proportion of live and stunned fish larvae and juveniles at the intake compared to the dischargo.

The estimated totgl number of entrained ichthyoplankton for the study period was 1,820.39 x 10. Water quality patterns are described above.

~he entrainment samples were also analyzed for macroinvertebrates. The mysid shrimp, Neomysis americana, was the most abundant macroinvertebrate collected, with densities ranging up to 12,500/100 m3 The amphipod Jassa falcata, was second in abundance. These two species, together with ostracods and the amphipod genus Corophium, accounted for 78 percent of total catch. Organism abundances decreased from a peak of 18,206/100 m3 in September to 3,290/100 m3 in December, then increased slightly to 7,319/100 m3 by February. Whereas N. americana dominated the September through November collections, J. falcata was the most abundant organism from December thNugh February. Most forms were generally more abundant in nighg collections comparad to day collections.

An estimated total of 54,113.84 x 10 macroinvertebrates were entrained during and 9,701.08 x 10gtes for N. americana and J. falcata The estim the six-month study peri d.

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, respectively. W'ater quality patterns were 26,512.31 x 10 are described above.

Jecause of a time-lag in compilation of data by the National Marine Fisheries Service, commercial landing data for Ocean and Atlantic counties were only available for September 1980 - January 1981. The top three species in Ocean County were summer flounder, weakfish, and hard clam (meats), while corres-ponding positions in Atlantic County were held by hard clam (meats), summer flounder, and blue crab.

The total value of all landings we.s $842,905 in l

Ocean County and $314,024 in Atlantic County.

Only hard clam (meats) in Atlantic County approached the weight and value landed in Ocean County.

Separate Barnegat Bay data are no longer compiled, but based on data from previous years, it can be estimated that all of the blue crab and white perch, and substantial portions of the winter flounder and, to a lesser i

l extent, hard clam landings for Ocean County, originated in Barnegat Bay.

Two fish kills in the Oyster Creek discharge were investigated in late November 1980.

On 18 and 19 November, 64 blue runners and one white perch

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were found dead in Oyster Creek.

This kill was attributed to a rapid sea-sonal decline in ambient water temperature.

The shutdown of the OCNGS on 22 November resulted in a second kill.

A total of 4,228 dead fish were collected, primarily bluefish (1,038) and jacks (3,163). Based on the recovery of fish tagged prior to the shutdown, it was estimated that 17,402 jacks were present in the discharge prior to shutdown; the corresponding estimate for bluefish was 48,833 From a review of thermal tolerance data, it was inferred that all jacks present in the discharge canal were killed while only a porcion (~10 percent) of the bluefish were killed. The kill resulted from the lowering of the water temperature in the discharge canal to or below the lower lethal limit fbr the species involved.

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1.

INTRODUCTION 4

l Nonradiological Environmental Technical Specifications monitoring was conducted at the Oyster Creek Nuclear Generating Station (OCNGS) for the period 1 September 1980 - 28 February 1981. This is the third in a series of reports of aquatic biological monitoring conducted by. Ecological Analysts, Inc. (EA) pursuant to Appendix B Oyster Creek Nuclear Generating Station Tschnical Specifications, issued to Jersey Central Power & Light Company i

(JCP&L) by the U.S. Nuclear Regulatory Commission (U.S. NRC 1978) to be offec';ve 6 June 1979.

The generating station and surrounding area were described by Danila et al.

1 (1979), based on literature reviews and their own studies. The OCNGS is a 620-MWe boiling-water reactor, located 3.2 kilometers inland from Barnegat l

Bay in Lacey Township, New Jersey (Figure 1-1).

During station operation, the south branch of Forked River serves as a cooling water intake canal, I

with streamflow reversed; Oyster Creek is the discharge canal. Cooling water is discharged into Barnegat Bay, a large, shallow estuary created by offshore barrier beaches.

A limited exchange of bay and ocean water occurs through narrow Barnegat Inlet and the Manasquan Canal.

The potential or actual interaction of OCNGS and Barnegat Bay has been under study since 1966 (Danila et al.1979). Early preoperational studies were conducted by Rutgers University and concentrated on benthic invertebrates, algae, and fish. These studies continued, with the inclusion of plankton, after commercial operation of OCNGS began in December 1969; most were carried out under the auspices of either Rutgers. University or the New Jersey Division of Fish, Game, and Shellfish. The results of these studies were evaluated in the Final Environmental Statement published by the U.S. Atomic Energy i

Commission (U.S. AEC) in 1974.

In 1978, Jersey Central Power & Light Company produced 316(a) and (b) demonstrations (JCP&L 1978) which evaluated the pre-vious studies, including the first two years of aquatic monitoring studies done by Ichthyological Associates (IA) (Tatham et al.1977). The IA studies continued until June 1979 when EA assumed the monitoring studies, both as a continuation of previous programs and as the first Environmental Technical Specifications aquatic monitoring.

Data from April and May 1979 (IA collec-tions) and June, July, and August 1979 were reported by Ecological Analysts,

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Inc. (1980).

An interpretive report, covering the period September 1979 -

August 1980, with comparisons to previous data, was produced in February 3

(Ecological Analysts 1981).

This report consists of data descriptions for each discipline studied by EA j

for the six months ending 28 February 1981. After a description of field and laboratory methodologies in Chapter 2, Chapters 3 through 8 treat, in turn, the results of Barnegat Bay fishery studies, impingement, ichthyoplank-ton entrainment, macroinvertebrate entcainment, commercial catch data, and fish-kill monitoring.

A combined reference section is provided at the end of the report. Tabular presentations associated with each discipline are W'ter quality in consecutive order at the end of the appropriate chapter.

a data are presented for each appropriate discipline.

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BARNEGA T BA Y YSTER CREEK NUCLEAR [.'

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Double Creek Figure 1-1. Map of the middle portion of Barnegat Bat showing trawfing and seining locations (adapted from Tatham et al.1978).

2.

METHODS 2.1 BARNEGAT BAY FISHERIES Finfish and shellfish sampling was carried out once per month at the mouths of Cedar Creek, Forked River, Oyster Creek, and Double Creek (Figure 1-1).

Three gears were employed: a 45.7-m x 2.4-m bag seine with 2.5-cm stretched mesh; a 12.2-m x 1.8-m straight seine with 0.6-cm stretched mesh; and a 4.9-m s:miballoon otter trawl with 1.3-cm stretched mesh codend liner. With each gtar, duplicate samples were taken once during the day and once during the night at each sampling station. The 45.7-m seine was deployed in a semicircle from a boat and pulled by hand.

The 12.2-m seine was extended parallel to shore with one pole onshore and pulled in a semicircle. Trawl hauls were standardized at 5-minute tows at ~1,200 rpm.

After each replicate sample, the catch was sorted and all organisms enumerated and identified. Key species, i.e., Atlantic menhaden, bay anchovy, Atlantic silverside, northern pipefish, striped bass, bluefish, weakfish, northern kingfish, summer flounder, winter flounder, northern puffer, sand shrimp (12.2-m seine only), and blue crab, were measured to the nearest millimeter fork length (finfish), carapace width (blue crab), or tip of telson to tip of antennal scale (sand shrimp).

A representative selection of 50 specimens of an individual species / life stage was measured, if more than 50 were caught.

4 If the same species / life stage was encountered in the second haul, up to 50 ware again measured. When large numbers of organisms, such as shrimp, small crabs, or anchovies, or large amounts of debris were encountered, subsampling was done and total counts were extrapolated. Any organism of questionable identity was preserved and returned to the laboratory for exacination.

Records ware kept of organisms having external parasites, disease, or morphological abnormalities.

2.2 IMPINGEMENT Impingement sampling was performed in the sluiceway pit, an open cuboid area downstream of all intake screens, at the point in the sluiceway where the j

screenwash conduit leads under the adjacent roadway to the discharge area (Figure 2-;).

Samples were collected in a 101.6-cm x 101.6-cm x 121.9-em wire basket with 10.7-mm square mesh. When the larger basket was removed for emptying, a smaller basket with identical mesh was placed in the sluice-way pit.

Impingement collections were made over a 24-hour period once per week.

Each collection consisted of a 2-hour time period in which 1.

all organisms were collected (2-hour collection and screenwash cycle),

2.

one-half of the organisms were collected (1-hour collection and screenwash cycle), or 3

some fraction of organisms less than one-half were collected (continuous screenwash mode).

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In the latter two cases, the total catch for the 2-hour time period was an estimate based on the ratio of the time period sampled to the entire 2-hour period.

This sampling approach was necessitated by the variation in the amount of organisms and debris encountered.

Case 1 usually held for daylight hours when organism and debris loads were relatively light, and screens were routinely washed every two hours. Because of higher debris and organism loads at night, the screens were normally washed once per hour.

Only one of the two screenwashes was collected in any nighttime 2-hour block (Case 2),

because of physical limitations of the sampling system. The Case 3 approach was necessary at times when the debris load was so great that the screens were operated continuously.

At these times, attempts were made to obtain at least 1/2-hour enbsamples for each 2-hour sample block.

Impingement catches were processed in a manner similar to that described for field fisheries in Section 2.1, except that no length measurements were taken.

Also, the total weight of each species was recorded. Subsampling of shrimp was carried out when large amounts of debris were present.

Any organisms of questionable identity were preserved for subsequent laboratory examination.

2.3 ENTRAINMENT Entrainment samples were collected at both intake and discharge (Figure 2-1).

During September and October 1980, two samplos were collected at each location two hours after sunset once each week. From November 1980 - February 1981, these samples were taken once every two weeks. Once each month, 24-hour sam-pling was conducted with four pairs of samples collected, two during the night and two during the day.

Samples were collected with a frame-mounted pair of 36-cm diameter bongo nets of 505-pm mesh.

A General Oceanics flowmeter was secured in the mouth of each net and to the framo outside the nets. The gear was suspended by wire from a boom and operated by hand winch. Two consecutive oblique tows were made; each tow sampled the entire (discharge) or part (irtake) of the water column. The recirculation tunnel blocked part of the water column at the intake, however, a minimum of two cubic meters of water was filtered at both locations. Discharge samples were collected 1-5 minutes af ter the intake sam-ples to ensure that the same water mass was sampled. After each collection, the net 2 were carefully washed to concentrate the sample in the codend jars.

Samples were transported to the lab trailer where each sample was sorted in a water bath of the same temperature as the water from which the collection was made. All fish larvae were classified as either live, scunned, or dead and placed in labeled vials in 5 percent buffered formalin. After viability examination, the vials were placed in the jar with the remainder of the sample from which the larvae came.

Ctenophores from the intake samp1ss were counted prior to preservation.

In the laboratory, all samples were sorted under a dissecting stereomicroscope.

Macrozooplankton and fish eggs and larvae were removed and placed in labeled vials according to gross taxonomic groups (e.g., Amphipoda, Annelida, Mysidacea) and fish larvae and eggs.

When the number of organisms was large, subsampling was carried out using a Folsom plankton splitter. Sample fractions were sorted 2-2

until 50 specimens of each major (abundant) macroinvertebrate group, and 100 specimens each of fish eggs and larvae, if present, were found.

Intake samples were identified to the lowest practical taxon for ichthyoplankton.

Crustacean zoeae were identified to species levsl with the exception of mud crab which was identified to family.

Other inverte5 rates were identified to major taxonomic groups, i.e., amphipods, mysids, isopods, cumaceans, and polychaetes. All organisms in discharge samples were identified to the lowest possible taxa.

2.4 COMMERCIAL CATCH DATA The commercial landing data for finfish and shellfish in~ 0cean County and Atlantic Cocnty, New Jersey, were obtained from Mr. Eugene LoVerde of the National Marine Fisheries Service office at Toms River, New Jersey.

2.5 FISH-KILL MONITORING During 18-23 November 1980, EA carried out a series of observations and sam-pling procedures in connection with fish kills in Oyster Creek.

On 18 and 19 November, shoreline examinations and trawling were conducted in response to a reported fish kill.

Dead fish were collected, identified, measured, and weighed.

On 20 and 21 November, sampling was carried out in the condenser discharge to identify the populations present prior to plant shutdown.

Gill net, of 8.9-and 12.7-cm stretched mesh were set in the condenser discharge.

Angling was done to collect additional samples. MOst of the fish caught by angling were

" tagged" by affixing a staple to the caudal fin, then returned to the water.

L' hen plant shutdown procedures began on 21 November (2200 hours0.0255 days 0.611 hours 0.00364 weeks 8.371e-4 months ), frequent obsertations, trawl sampling, '.nd water quality measurements were made in the discharge canal. These activities continued until midday on 22 November, and w:re carried out again for several hours on 23 November.

Dead fish were pro-cassed as described above.

Based on the collection of dead fish that were originally tagged on 20 and 21 November, an estimate was made of the number of certain species present in the w ea of the condenser discharge prior to the shutdown event. The msthod used was the adjusted Petersen estimate (Ricker 1975):

(m+1) (c+1)

(Equation 2-1)

N-H+1 where N = number present in population sampled M = number of fish marked C = sample taken for census (i.e., the dead fish collected)

R = number of tagged fish recaptured Ninety-five percent confidence limits were taken from tabulated values in Ricker (1975).

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2.6 WATEn QUALITY MEASUREMENTS Bater quality measurements were made in conjunction with routine biological 1

sampling, and included water temperature, pH, salinity, dissolved oxygen (DO), and chlorine (the latter during entrainment sampling only). A Yellow Springs Instrument Co. (YSI) Model 57 Do meter was used to measure dissolved oxygen; the instrument was calibrated weekly before each use. Water tempera-ture and salinity were measured with a YSI Model 33 Salinity-Conductivity-Temperature (S-C-T) meter that was calibrated semimonthly. Measurements of pH were made with a Corning 610A meter, calibrated at least once per week.

Chlorine concentrations were determined using a Fisher-Porter amperometric titrator.

During Barnegat Bay fisheries surveys, water quality measurements were taken 0.5 meters below the surface once at each seining station; at each trawling station, they were made both before and after sampling just above the bottom.

Measurements were made at the surface and bottom in the OCNGS intake during each screenwash or during each impingement collection if screens were oper-ating continuously. Entrainment sampling included surface and bottom water quality measurements between each oblique tow at the intake and surface measurements only at the discharge.

Chlorire data were taken only at the discharge.

2.7 DATA PROCESSING Field and laboratory data were recorded on standard data sheets and checked for accuracy.

Data were punched onto cards, entered on magnetic tape, and loaded into a PDP-11/70 computer.

An initial data verification program was run and the output checked against the original data sheets. Various summary programs were then run to reduce the data for examination. Primary among these were a percentage abundance program and a station-date catch matrix.

Total impingement and entrainment was estimated for the period September 1980 -

February 1981. W'eekly total estimates of impingement were also computed.

2.7.1 Impingement Estimates The impingement sampling program at OCNGS employed a multistage sampling design.

During the first stage, aampling days were selected once a week and these sam-pling days were sequentially grouped into strata so that no stratum had fewer than two sample days.

During the second stage, the sample day was partitioned into two 12-hour periods roughly representing day and night.

As a third stage, the 12-hour periods were further subdivided into six 2-houl periods.

In some cases, all fish impinged in the 2-hour period were collected and counted giving an exact count for impingement.

During periods of heavy impingement, a fourth stage was employed whereby a subinterval of the 2-hour period das sampled.

2-4

l Using data collected by this sampling design, impingement estimates were computed with the formulas:

L I=

E N 7 (Equation 2-2) i 1 i=1 where

= estimated total number (or weight) of organisms impinged L = total number of strata i = ordinal number for strata I

th Ni = number of days in the i ctratum ni (Equation 2-3) j =L g

y ni j=1 th stratum

= average daily impingement for i where th ni = number of sample days in i stratum j = ordinal number for sample day 2

Y jk (Equation 2-4) i E

Y j = k=1 i

th th

= estimated impingement for j sample day of i stratum where 2 = number of diel periods k = ordinal number for diel period 6

.yijk : [TBijk1 y (Equation 2-5)

Tsijk1 th

= estimated impingement of the k diel period th th of the j sample day of the i stratum where 6 = number of blocks within diel periods 1 = ordinal number for block TBijk1 = length (in nanutes) of block j

Tsijk1 = time samplM (in minutes) in block th Y jkl = count of organisms for the sample collected in the ijkl block i

l l

i 2-E

The estimated variance of I that was used for computing confidence intervals was computed by the formula (Equation 2-6) n1 2 6

L 2

I N1 E

E E

i

^ ^

i=1 ni

.(Ni - ni)

Sji + j=1 n=1 1=1 Var (Y jkl)

Var (I) -

where ni A

(Y j - Y )2 2

1 I

Sji =

i i

ni - 1 j=1 l

^

Var (Y

)=

ijkl - Bijkl sijk1 y

Tjijkl The 80 percent confidence intervals were then computed using the normal approximation I

1.645 Vr(f)

^

Weekly impingement estimates were computed by multiplying the estimated I

th impingement for the jth sample day of the i stratum by seven.

A A

Iij = Yij 7

(Equation 2-7) where th th ij = estimated impingement for j week of i stratum Yij = as defined above 2.7.2 Entrainment Estimates The entrainment sampling program at OCNGS employs two-way stratification with subsampling of experimental units as a sampling frame. The period of collection was stratified into months to allow for seasonal variations in abundances. The collections were further stratified into perioda of day and night to allow for diel trends in abundance of.some organisms.

The time delimiters for diel stratification were determined by the average sunrise and sunset times for latitude 40 N during each stratom. Each diel period (day or night) was divided into two v,ual sampling units, and the a

samples from a unit were considered representative of the entire unit.

Because entrainment is known to be greater at night, the night stratum of each month was allocated a greater number of samples to improve the preci-sion of the estimate.

In general, two samples were collected during the day stratum and five or six are collected at night.

Each sample consisted of 2-6

two sequential replicates to ensure that a sample of adequate duration was collected.

Using the data collected according to this sampling' plan, entrainment esti-mates were computed for each species with the formula L

E=

E N 7 (Equation 2-8) i 1 i=1 where E = estimated entrainment for period of collection L = total number of strata i = ordinal number for strata th Ni = the number of sampling units in the i stratum ni a

y1 =.1._

E y

(Equation 2-9) ni f=1 where 5 = estimated average daily entrainment for ith stratum 1

th ni = the number of sampling units sampled in the i stratum J = ordinal number for sample within stratum fY hij=fT Yj (Equation 2-10) ui ij i

(1440j (V313 )

where th th Y j = estimated entrainment for j day of i stratum i

th T

duration in minutes of a sampling unit in the i stratum 14 N== number of minutes in 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months Vij = volume pumped i5 rough plant (cooling water and dilution water) on jth sample day of ith stratual Vsij = volume sampled on jth sample day of i stratum th Y j = count of organisms collected in a sample i

The variance of b was computed as (Equation 2-11)

L ni.

i=1 ni

.(N - ni) Ski + j=1 Var (Y j)

Var (E) = I i_

E i

l 1

2-7 1

1 l

where ni I (Yij - 71)2 Sfi

3:1 ni - 1 i

and assuming Y j - Poisson distribution i

!T"i fV (Equation 2-12)

Var (h))=

^

id Y

I U

i

,(1440j (V31j j _

b d

a 2-8

l

\\

l y 3/

p g

^

4 b

s p,'

y{,

g Y '

' f'f= g k

e ht ta s

g[lr

'c p

g1n 0==g)g i

m 9

up n

o 1

t lu f

I9 I

i d

).

e8

=

h 7 t 9 d1

%g;.

n

/

al.

p{Ol E

i a

mte e

t m

s M

y a l

s h

h r t e a k

I aT t

'i wm ll j

g o n r f

iad t

i 5

~

ut l

e c p a

r a icd a

e(

h n

~

t o

f e

oti

~

a et i a h

gS s

r a

a g W

h n ci t

[

i s

d r e I

d n n e aG e r k a a e t

l n c 3

u ieN g

u h

\\I\\

k t

e f

A f

ore

\\

mC a r e

r t

g s

Fj

)

a iy DO

\\

)

1

-2 e

r ig F

J A

r

. I 8

l

3 COMPOSITION AND ABUNDANCE OF FINFISH AND SHELLFISH IN BARNEGAT BAY The results of the September 1980 - February 1981 sampling with 45.7-m and 12.2-m seines and 4.9-m trawl are presented separately for each gear.

Parasite / disease and water quality data associated with the biological sampling are included. For reference, a list of scientific and common names of finfishes is presented in Appendix A.

3.1 TRAWL DATA (4.9-m)

Trawling produced a total of 61,841 af ecimens comprising 35 spec es of finfish and 12 macroinvertebrate taxa (Table 3-1; also see Appermix B).

The sand shrimp (Crangon septemspinosa) was most abundant, totalin3 over 48,000 specimens or 78 percent of the catch.

Xanthid crab juveniles and the grass shrimp (Palaemonetes vulgaris) were the second and third rm.ked taxa, w'th just over 6,000 and 3,000 specimens, respectively. Together, these F ree macroinvertebrate taxa made up 92.4 percent of the total catch.

The m6at abundant finfish was the fourspine stickleback ( Apeltes quadracus),

which ranked fourth in abundance, totaling 1,272 specimens or 2.1 percent of the catch. The only other finfish constituting more than 1 percent of the total catch was the bay anchovy (Anchoa mitchilli).

Of the above species, the sand shrimp and bay anchovy are key species desig-nated in the Technical Specifications. The blue crab (Callinectes sapidus),

also a key species, was fifth in overa' abundance with a total of 1,037 specimens (including juveniles). Sjs itional key species of finfish l

l wsre encountered: winter flounder (g _ apleuronectes americanus), summer flounder (Para Lichthys dentatus), Atlantic silverside (Menidia menidia),

northern pipef tsh (Syngnathus fbscus), weakfish (Cynoscion regalis),

northern ~ puffer (Sphoeroides maculatus),- and Atlantic menhaden (Brevoortia tyrannus). Of these, only the winter flounder produced more than a bun-dred specimens for the study period. Key species that were not collecuou by trawl were the bluefi-h (Pomatomus saltatrix), striped bass (Morone saxatilis), and northern kingfish (Menticirrhus saxatilis).

For the abundant key species, there was considerable variation in catch j

rates from month to month (Table 3-2).

Summer flounder occurred in low l

numbers from September through November but disappeared thereafter. Winter flounder were collected in all months but were most abundant from December j

through February.

Catches of bay anchovy averaged 40.8 per haul during September, but decreased rapidly thereafter and were not caught in January or February.

Average catches of the sand shrimp increased from September to a peak of 1,634.4 per haul in January, then decreased sharply in February.

Blue crabs were encountered in all months, but in relatively low numbers in January and February. These temporal variation patterns generally reflect the periods of abundance of these species in Farnegat Bay, as described in Ecological Analysts (1981).

Station-to-station and day-night variations were also evident in the catch data (Table 3-2).

Although individual catches of summer flounder varied among sampling stations, the six-month means were consistent across stations.

Night catches of this species averaged a little higher than day catches, 3-1

except at Oyster Creek.

Catch rates of winter flounder were low and uni-form among Cedar Creek, Forked hiver, and Double Creek, but were about 17 times higher at Oyster Creek. Night catches of winter flounder averaged from 1.5 to 4 times higher at all stations, compared to day catches.

Individual catches of bay anchovy were quite variable among stations and day-night periods. The largest six-month mean catch of 49.4 bay anchovy per haul at Double Creek (night) was a result of a large catch on 9 Septem-ber 1980. Sand shrimp were captured at all stations, but averaged nearly seven times more abundant at Double and Oyster creeks. Night catches were greater at all stations, ranging from 2.8 (Cedar Creek) to 7.2 times (Double Creek) as great as day catches.

Oyster Creek produced the greatest number of blue crabs, by virtue of several large night catches.

Catches were variable among the other stations, but consistently greater at night, 9xcept at Double Creek.

Length-frequency ta,31ations for several key species are presented in Table 3-3 Nearly all summer flounder captured were in the 100-300 millimeter Winter range, and thus were one-year-old juveniles of the fall 1979 spawn.

flounder catches included a mixture of juveniles and adults. Those speci-mens between 50 and 150 millimeters taken from December through February were juveniles spawned the previous winter. Fishes over 250 millimeters were taken primarily during December through February, the spawning period for the species, and the majority of these were mature adults.

The major-ity of bay anchovy were young of the year under 40 millimeters spawned in summer 1980. Most of the blue crabs captured were immature specimens under 120-mm carapace width.

3.2 SEINE DATA (45.7-m)

Forty-one species of finfish and 12 macroinvertebrate taxa were collected in the 45.7-m seine (Table 3-4).

The total number collected during the study period was 17,310. Macroinvertebrates dominated the seine catches with sand shrimp, blue crab, and grass shrimp comprising 90 percent of the organisms collected. Only two finfish, Atlantic silverside and bay anchovy, separately accounted for more than 1 percent of the catch. Of the top five species, all except grass shrimp are designated as key species in the Technical Specifications.

Other key species captured by the 45.7-m seine were, in decreasing abundance order, bluefish, winter flounder, northern pipefish, summer flounder, weakfish, and Atlantic menhaden.

Catch rates for abundant key species are presented by station and date in Table 3-5 (monthly catches for all species are presented in Appendix C).

Bluefish were taken only in September and October. Similarly, bay anchovy occurred only in September (except for a few in the Oyster Creek discharge in December).

Atlantic silverside were more abundant at Cedar Creek, Forked River, and Double Creek, and virtually absent from Oyster Creek in September and October.

Conversely, the species was low in abundance or abaent from Cedar Creek, Forked River, and Double Creek from November through February, while its abundance greatly increased at the Oyster Creek station. Sand shrimp numbers were relatively low during the first and last parts of the atudy period and high (530.6 per haul) in December. Blue crabs were col-lected in all months, but in low numbers after October.

3-2

, j '.,

Xbb, e

i* L.

Regarding station-to-station and day-night variation, the numbers of blue-i [.

fish were too low to discern a pattern. The same is true for bay anchovy,

~

4 t-with two catches, one at Forked River (day) and one at Double Creek (day) in September, accounting for the majority of the catch. Atlantic silver-

. g side catches varied considerably among stations, dates, and day-night periods, with Oyster Creek producing the greatest numbers. Sand shrimp

..A were cost abundant at Oyster Creek and least abundant at Double Creek.

- 'N Sand shrimp catches were markedly greater at night at all stations. Blue

b. M crabs were most abundant at Cedar Creek and least abundant at Forked River.

.i -

As with sand shrimp, blue crab catches were consistently larger at night at 3 ".

all stations.

.S.'." l Length-frequency data are presented for certain key species (Table 3-6).

[~=

The relatively few bluefish caught in fall 1980 were all juveniles between 50 and 150 millimeters. Those Atlantic silverside over 80 millimeters were adults, while most of those under 80 millimeters were young spawned in 7.'

spring 1980. The bay anchovy catch (primarily September) consisted of a j.

mixture of young of the year (~40-60 mm) and older individuals. Nearly c.

1 all blue crabs captured with the 45.7-m seine were immature individuals

't g under 120-mm carapace width; most fell between 20 and 60 millimeters.

%N

',st 3.3 SEINE DATA (12.2-m)

.f.l.

A total of 27,116 organisms were collected with the 12.2-m seine during the study period, including 36 species of finfish and seven macroinvertebrate

)

taxa (Table 3-7).

As with the other gear, macroinvertebrates dominated the catch. Sand shrimp (69.7 percent), grass shrimp (5.5 percent), and blue crab (1.8 percent) together made up 77 percent of the catch. Atlantic

{'

i silverside was second in overall abundance with 2,720 specimens (juveniles

-?{=

included). The bay anchovy and fourspine stickleback contribitted 5.2 and

' (r. t 3.5 per-ent, respectively.

In addition to the sand shrimp, blue crab, Atlantic silverside, and bay anchovy, five other key species were collected:

northern pipefish, Atlantic menhaden, winter flounder, bluefish, and summer 1

flounder.

a-To provide insight inte variation over time, station, and day-night periods,

.I #:

station-date matrices are presented in Table 3-8 (monthly catches for all abundances of Atlantic silverside were similar for all morths except January,

',1 species are presented in Appendix D).

Based on overall mean-catch rates, N

when they were virtually absent. As previously noted for the other gear,

( ~ ;

bay anchovy were caught primarily in September. Overall mean catch rates

=

for sand shrimp increased from 37.1 per haul in September to a peak of 488.7 per haul in December, then decreased again. Blue crab catches ranged 7'

from 1.5 to 43.5 per haul during September - October, after which very few were collected.

~~

.l 1 Although overall monthly means for Atlantic silverside were rather consis-J, ^ '.y tent, this was not the case for individual stations. Oyster Creek produced

,j -

nine times more silversides than Cedar Creek, and most were caught in Novem-ber and December. At the other stations (unheated), the greatest catches S.,

e were in September and October. There was no consistent variation in day-

~s' -

night catches of Atlantic silverside. Most of the bay anchovy collected

,?

were taken in September at Cedar Creek and Double Creek; night catches averaged higher than day catches. The highest catches of sand shrimp were i a '

.,,+ m 3-3

~ ^

A',y, N - -

produced at Cedar Creek and the lowest at Oyster Creek.

Night catches were greater at all stations and dates. Blue crab numbers varied among stations and dates, but on the average were similar across all stations.

Night abundances were greater than day abundances by a factor of 2.9 (Oyster Creek) to 4.9 (Cedar Creek).

Length-frequency data for the above species are presented in Table 3-9 Both adults (375 mm) and young-of-the-year Atlantic silverside were col-lected; the majority of the specimens were between 60 and 100 millimeters.

The collection of bay anchovy consisted of virtually all young-of-the-year fish under 60 millimeters. This contrasts with the 45.7-m seine catch, which produced more adults. Most (93 percent) of the sand shrimp measured were adults over 20 millimeters. Smaller adults (20-40 mm) were the most abundant size group.

Most blue crabs captured were immature forms between 6-and 60-mm carapace width.

3.4 EXTERNAL PARASITES, DISEASE, AND MORPHOLOGICAL ABNORMALITIES During the study period, only minor incidences of disease and morphological abnormalities were noted. No parasitism was noted. Missing caudal fin was the most common characteristic noted; this occurred with eight four-spine stickleback and one each of striped mullet (Mugil cephalus), permit (Trachinotus falcatus), sheepshead minnow (Cyprinodon variegatus), and summer flounder. Scoliosis, or curvature of the spine, was recorded for cne specimen of tidewater silverside (Menidia beryllina) and one fourspine stickleback. One winter flounder was found with a large (healed) wound in the dorsal fin area and another with a lesion on the ventral surface.

35 WATER QUALITY DATA ASSOCIATED WITH BARNEGAT BAY FISHERIES STUDIES Water quality measurements were made in conjunction with each biological sample. The characteristics measured were dissolved oxygen (DO), pH, water temperature, and salinity. For seine sampling, measurements were made just below the water surface; for trawl sampling, just above the bottom.

The data are provided in Tables 3-10 (ceine) and 3-11 (trawl).

Mean DO values during seining ranged from 6.8 mg/ liter in September to 14.1 mg/ liter in January. The minimum value recorded was 5.5 mg/ liter at Forked River (night) in September and the maximum was 15.5 mg/ liter at Oyster Creek (day) in January. There was some variation among stations and day-night periods, but no consistent patterns.

The pH readings at inshore stations (seine) ranged from 7.5 to 8.3 There were no marked differences between stations, day-night periods, or dates.

Salinity values for seine data ranged from 15.0 ppt at Cedar Creek (day) in September to 28.0 ppt at Double Creek (day) in September. Salinity was lowest at Cedar Creek and highest at Double Creek.

In general, monthly salinity values were similar thorughout the six-month study period.

3-4

Near-surface water temperature ranged from 1.0 C at Forked Rive.a in January to 25.6 C at Oyster Creek in September (Table 3-10).

Temperatures were similar at Cedar Creek, Forked River, and Double Creek, but averaged several degrees higher at the mouth of the Oyster Creek discharge.

Daytime tempera-tures averaged slightly higher than nighttime temperatures at all stations.

The water quality data associated with trawl sampling (Table 3-11) were generally similar to the seine water quality data.

DO averaged slightly lower and water temperature slightly higher at the trawl stations.

Salinity also averaged slightly higher at the trawl stations.

3-5

TABLE 3-1 TOTAL NUMBER, PERCENT COMPOSITION, AND CUMULATIVE PERCENT OF FISH AND MACR 0 INVERTEBRATES COLLEC*ED BY OTTER TRAWL IN BARNEGAT BAY, SEPTEMBER 1980 - EEBRUARY 1981 SPP. NAME NUMBER CUMU. %

CRANGCN SEPTEMSPINOSA 48083.000 77.753 77.753 FAMILY XANTHIDAE JUV.

6025.000 9.743 87.495 PALAEMONETES VULGARIS 3032.000 4.903 92.390 APELTES uuADRACUS 1272.000 2.057 94.455 CALLINECTES 3APIDUS 922.000 1.491 95.946 ANCHOA MITCHILLI 712.000 1.151 97.097 GOBIOSOMA BOSCI 537.000 0.868 97.966 CLASS ASTER 0 IDEA 272.000 0.440 98.406 PSEUD 0PLEURONECTES AMERI 194 000 0.314 98.719 LIBINIA DUBIA 133.000 0.215 98.934 CALLINECTES SAPIDUS JUV 115.000 0.186 99.120 HIPPOLYTE SP 101 000 0.163 99.284 PARALICHTHYS DENTATUS 56 000 0.091 99.374 MENIDIA MENIDIA 50.000 0.081 99.455 OPSANUS TAU 38.000 0.061 99.516 SYNGNATHUS FUSCUS 37.000 0.060 99.576 MYOX0CEPHALUS AENAEUS 36.000 0.058 99.635 NEOPANOPE TEXANA SAYI 34.000 0.055 99.690 TRINECTES MACULATUS 27.000 0.044 99.733 CONGER OCEANICUS 24.000 0.039 99.772 CYNOSCION REGALIS 20.000 0.032 99.804 ETROPUS HICROSTOMUS 20.000 0.032 99.837 i

CHASMODES 50SOUIANUS 19.000 0.031 99.867 TAUTOGA CNITIS 12.000 0.019 99.887 FUNDULUS HETER 0CLITUS 11.000 0.018 99.905 ANGUILLA ROSTRATA 9.000 0.015 99.919 HIPPOCAMPUS ERECTUS 8.000 0.013 99.932 CYPRINODON VARIEGATUS 5.000 0.008 99.940 PRICHOTUS EVOLANS 5.000 0.008 99.948 4

PANOPEUS HERBSTII 5.000 0.008 99.956 DASYATIS SAYI 2.000 0.003 99.960 ALOSA AESTIVALIS 2.000 0.003 99.963 LUCANIA PARVA 2.000 0.003 99.966 CARANX HIPPOS 2.000 0.003 99.969 i

CHAETODON OCELLATUS 2.000 0.003 99.973 i

SCOPHTHALMUS A000 SUS 2.000 0.003 99.976 SPHOER0 IDES MACULATUS 2.000 0.003 99.979 CLASS SCYPH0ZOA 2.000 0.003

??.982 BREV00RTIA TYRANNUS 1.000 0.002 99.984 UROPHYCIS CHUSS 1.000 0.002 99.985 MENIDIA SP 1.000 0.002 99.987 i

MORONE AMERICANA 1.000 0.002 99.989 LUTJANUS GRISEUS 1.000 0.002 99.990 i

LEIOSTOMUS XANTHURUS 1.000 0.002 99.992 i

CHAETODIPTERUS FABER 1.000 0.002 99.994 i

TAUTOGOLABRUS ADSPERSUS 1.000 0.002 99.995 r

PEPRILUS TRIACANTHUS 1.000 0.002 99.997 BUSYCON CAht.LICULATUM 1.000 0.002 99.998 PENAEUS AZTECUS 1.000 0.002 100.000 l

l l

Note:

Lifestage is undetermined unless otherwise indicated.

l

\\

TABLE 3-2 MEAN NUMBER PER TRAWL HAUL OF SAND SHRIMP, BLUE CRAB, SUMMER FLOUNDER, WINTER FLOUNDER, AND BAY ANCHOVY, BARNEGAT BAY SAMPLING, SEPTEMBER 1980 - FEBRUARY 1981 SAND SHRIMP' STATION DATE CDCD CDCN FKRD FKRN DBCD DBCN OYCD CYCN HEAN 9 SEP 80 2.0 156.0 6.5 94.0 10.0 60.0 0.0 20.5 43.6 7 OCT 80 4.0 173.5 22.0 113.5 1.5 2166.5 0.0 0.5 310.2 5 NOV 80 347.0 52.0 94.5 24.0 602.0 71.0 23.0 498.0 213.9 4 DEC 80 13.5 706.0 30.5 459.5 86.0 2742.0 1961.0 5220.5 1402.4 7 JAN 81 2.0 126.5 65.0 6224.0 1604.4 4 FEB 81 96.5 201.5 1.5 270.0 50.5 383.0 43.5 016.5 232.9 MEAN 92.6 257.8 26.2-181.3 150.0 1084.5 348.8 2130.0 546.4 BL!IE CRAB STATION DATE CDCD CDCN FKRD FKRN DBCD DBCN OYCD OYCN MEAN 9 SEP 80 2.5 15.5 23.5 74.0 6.5 6.5 1.5 108.0 29.8 7 OCT 80 5.0 9.5 24.5 7.0 5.0 6.5 5.0 5.5 8.4 5 NOV 80 5.5 51.5 1.5 1.0 19.0 6.0 3.5 24.0 14.0 4 DEC 80 0.0 0.0 0.0 0.5 0.0 1.5 11.0 73 0 10.8 7 JAN 81 0.0 0.0 1.0 1.5 0.6 4 FEB 81 1.5 0.5 0.0 0.0 9.5 0.5 0.0 1.0 1.6 NEAN 2.9 15.2 8.3 13.8 8.0 4.2 3.7 35.5 ft.8 Note:

CDC = Cedar Creek; FKR = Forked River; DBC = Double Creek; OYC = Oyster Creek.

Last letter of station code denotes day sampling (D) or night enspling (N).

Dash (--) indicates sampling not done.

-______.-_-_____..-___D

l l

4920006 1129642 b004252 1010000 N-NA A-E -

EM M-0000008 0005055 0007639 0050000 1

3 N-NC C-Y Y -

O-O 5050000 b.050555 b008434 0140001 1

D D-C C-Y Y -

O O-

- 5000 05 b050 53 b000 00

- 6100 01 N-N C

C-R B -

R B

E D-E D

D D

)

N NU N

- 5000 03 U N b.050 01 O O t

O O

=

0000 00 1000 00 L

I n

L I

F T

o F

T c

A A

(

R T

D R

T D

M B

E S C E S C -

T B

M D -

N D

2 I

U W

S 5500005 0005058 3

E

- 1100000 0001030 L

B N

A N-R R-T K

K-F F-

- 5500003 h000002

-- 0100000 0000010 D

D-R R-h E-F F-

- 5000 05 0505 06 0001 10

- 0200 00 N

N-C C -

D D-C-

C

- 0500 01 b.050 54

-- 0000 00 0001 00 -

D D

C C

D D

C C

000011 000011 888888 888888 E

E-T PTVCNBN T

PTVCNBN A ECOEAEA A

ECOEAEA D SONDJFE D

SONDJFE N

N 975474 975474 i

l lll

I e C3.CD w tI3 C.O.M t

a O N O O O O CO

'T 24i Wl KL I C O. O. O. O O.N l

t M.a C 0 0 0 0 I

I 2I OI a,

>= I I

C1 i C. 0 0. n. 0 0 0 g

8OOOnCom a

GI U1

>= 1 OI C O. C. O.

C. O.

NMOO O tI3 C4w 1

i I

28 Ul 4r4 e GI e

>=

e 3

p C 2 i n.n. O. C.

O. T.

C C

y.

goo.

om O

z w w

g w

U c 4 N

l v

> G

>= Cf3 U 4

30 N

Ge G'

1 M

I W O. O. O. O.O..

W I Qllv o C O O N J

s h

2s H

MI MI 61 1 0 0 0 0 00.N.

3 e

I4COCCON l **

I GI Mi Ml 68 i C O.C. O.

O. O.

e NMOO C4

N I

I 2,u' Gi Ui t C. O. D. O.

C. M.

IC000 CO I

I e

i Ce 1 OI G4 Ui 1000C**

I tlD G3 EL CD QJC3 W8

>- I a.* > U 2.Te 2 4 8 WO OLJ4WG G l f.13 0 Z G ""J 6 Lu I

E DSNWTNT I

l l

TABLE 3-3 LENGTH-FREQUENCY DISTRIBUTIONS OF BLUE CRAB, SUMMER FLOUNDER, WINTER FLOUNDER, AND BAY ANCHOVY COLLECTED BY OTTER TRAWL IN BARNEGAT BAY, SEPTEMBER 1980 - FEBRIIARY 1981 BLUE CRAB LENGTH INTERVALS (MN)

RANGE 0.0 20.0 40.0 60.0 80.0 100.0 120.0 140.0 DATE N

X SD 19.9 39.9 59.9 79.9 99 9 119.9 139.9 >140.0 MIN ilED NAX

----- ----- ----- ----- ----- ----- =

9 SEP 80 295 41.1 38.7 114 85 30 12 10 25 10 9

5.0 27.0 163.0 7 OCT 80 134 41.5 42.3 67 18 25 2

5 4

5 8

6.0 19.5 182.0 5 NOV 80 210 43.7 30.2 51 42 82 21 3

2 4

5 6.0 43.0 185.0 4 DEC e9 120 54.3 33.9 6

36 47 14 3

4 4

6 9.0 47.5 163.0 7 JAN 6' S 30.8 14.2 1

3 1

0 0

0 9.0 32.0 53.0 4 FEB FL 26 31.9 17.2 10 5

9 2

0 0

13.0 25.0 68.0 i

SUMMER FLOUNDER LENGTH INTERVALS (MN)

RANGE 0.0 50.0 100.0 150.0 200.0 250.0 300.0 350.0 DATE N

SD 49.9 99.9 149.9 199.9 249.9 299.9 349.9 >350.0 MIN NED NAX 9 SEP 80 22 207.6 58.3 0

0 6

1 11 3

0 1

116.0 230.5 355.0 7 OCT 80 15 241.0 29.9 0

0 0

3 5

7 0

0 179.0 244.0 284 0 5 NOV 80 19 246.5 31.7 0

0 0

3 8

7 1

0 190.0 242.0 301 0 7 JAN 81 0

~

O.0 0

0 0

0 0.0 0.0 0.0 4 DEC 80 0

0' 0.0 0

0 0

0 0.0 0.0 00 4 FEB 81 0

.o 0

0 0

0.0 0.0 0.0 i

Note:

N = number of lengths; X = mean length; SD = standard deviation; NA = data not available; MIN = shortest length; MED = median length; MAX = greatest length.

l l

i

- X 000000

- X 000000 A-

- A-

- H 132701 M 868000 758567 6530 22333 E-E-

G D 505000 G D 005000 N

E-N E-A H 436079 A N 952200 R-652394 R

2334 22122

- N 000000

- N 000000 I

I -

837656 M 617700 H

550606 1223 21 1

00.

000312

- 0 0... 000000 00-

- 00 55-

- 44 33-

- 11.

- 09.

000190 09.

000000

- 1 2 11 -

=

09.

012640 09.

000000

) 1 2

09-

)

H 59-H 01 -

H 22-H 11 -

R

(

E S

09.

000724 09.

000100 Y

S-D L-V L

)

N U A 09-1 O A 09-t O V H V n L R C R-o F E N

E-T A

T -

c 09.

001118 N

09.

400000 R N

(

Y I -

E I

T

- 09 A

09-N l - 59 B H 67-l 3

I i

11 T -

W G-G-

3 N-N-

L-L

- 09.

370800 E

E 09.

001746 E

09-1 1

09 51 L

04-45-B 11 -

A

=

T

=

09.

200407 09.

782300

- 2

- 09 52 - 23 1

-- 09

. 000000 09.

700000

- 09 -

4-1-

507759

- 515200 D 609624 D 085100 S-6988 S1 1

505918

- 065100 X-X-

430525

- 252500 651862

- 3334 22122 214917

- 152200 N-728 N 24 1

- 2 000011 000011

- 888888

- 888888 E PTVCNB E PTVCNB T - ECOEAE T

ECOEAE A SONDJF A SONDJF D-D-

- 975474

- 975474 Illll ij!l!

TABLE 3-4 TOTAL NUMBER, PERCENT COMPOSITION, AND CUMULATIVE PERCENT OF FISH AND MACR 0 INVERTEBRATES COLLECTED BY 45.7-m SEINE IN BARNEGAT BAY, SEPTEMBER 1980 - FEBRUARY 1981 SPP. NAME NUMBER COMU. %

CRANGON SEPTEMSPINOSA 13480.000 77.865 77.865 CALLINECTES SAPIDUS 1202.000 6.943 84.808 MENIDIA MENIDIA 715.00c 4.130 88.938 PALAEMONETES VULGARIS 610.000 3.324 92.462 CALLINECTES SAPIDUS JUV 271.000 1.565 94.027 ANCHOA MITCHILLI 181.000 1.046 95.073 FUNDULUS MAJALIS 109.000 0.624 95.697 OPSANUS TAU V4.000 0.555 96.251 MUGIL CEPHALUS 63.000 0.364 96.615 APELTES QUADRACUS 62.000 0.358 96 973 GOBIOSOMA BOSCI 57.000 0.329 97.302 POMATOMUS SALTATRIX 53.000 0 306 97.609 FUNDULUS HETER 0CLITUS 42.000 0.243 97.851 MUGIL CUREMA 40.000 0.231 98.082 PSEUDOPLEURCNECTES AMERI 33.000 0.191 98.273 SYNGNATHUS FUSCUS 27.000 0.156 98.429 ALOSA AESTIVALIS 23.000 0 133 98.562 CYPRINODON VARIEGATUS 23.000 0.133 98.495 FUNDULUS DIAPHANUS 21.000 0 121 98.816 CHASMODES B030VIANUS 20.000 0.116 98.931 PARALICHTHYS DENTATUS 18.000 0.104 99.035 NEOPANOPE TEXANA SAYI 13.000 0.104 99.139 STRONGYLURA MARINA 16.000 0.092 99.232 MENIDIA BERYLLINA 16.000 0.092 99.324 PENAEUS AZTECUS 11.000 0 064 99.388 CYNOSCION REGALIS 10.000 0 058 99.445 ANGUILLA ROSTRATA 9.000 0.052 99.497 CARANX HIPPOS 9.000 0.052 99.549 ASTROSCOPUS GUTTATUS 9.000 0.052 99.601 TAUTOGA ONITIS 8.000 0.046 99.648 ETROPUS MICROSTOMUS 7.000 0.040 99.688 FAMILY XANTHIDAE JUV.

7.000 0.040 99.729 SYN 0DUS F0ETENS 5.000 0.029 99.757 ANGUILLA ROSTRATA JUU.

4.000 0.023 99.781 TRINECTES MACULATUS 4.000 0.023 99.804 TRACHIN0TUS FALCATUS 3.000 0.017 99.321 MYOX0CEPHALUS AENAEUS 3.000 0 017 99.838 CLASS SCYPH0ZOA 3.000 0.017 99.856 OVALIFES OCELLATUS 3.000 0.017 99.873 LIBINIA DUBIA 3.000 0.017 99.390 HIPPOCAMPUS ERECTUS 2.000 0.012 99.902 MORONE AMERICANA 2.000 0.012 99.913 SELENE V0MER 2.000 0.012 99.925 BREV00RTIA TYRANNUS JUV 1.000 0 006 99.931 BREV00RTIA TYRANNUS 1.000 0.006 99.936

(

HYPORHAMPHUS UNIFASCATUS 1.000 0.006 99.942 TYLOSURUS ACUS 1.000 0.006 99.948 l

LUCANIA PARVA 1.000 0.006 99.954 l

GASTER 0STEUS ACULEATUS 1.000 0.006 99.960 CARANX CRYSOS 1.000 0.006 99.965 LUTJANUS GRISEUS 1.000 0 006 99.971 PEPRILUS TRIACANTHUS 1.000 0.006 99.977 LACTOPHRYS TRIOUETER 1.000 0.006 99.983 PHYLUM NEMERTEA 1.000 0.006 99.988 HIPPOLYTE SP 1.000 0.006 99.994 CLASS ASTER 0! DEA 1.000 0.006 100.000 l

l Note: Lifestage is undetermined unless otherwise in 'icated.

i

I f

TABLE 3-5 MEAN NUMBER PER SEINE HAUL (IIS.7-m) 0F SAND SHRIMP, BLUE CRAB, BLUEFISH, BAY ANCHOVY, AND ATLANTIC SILVERSIDE, BARNEGAT BAY SAMPLING, SEPTEMBER 1980 - FEBRUARY 1981 t

SAHD SHRIMP STATION DATE CDCD CDCN FKRD FKRN DBCD DBCN OYCD OYCN HEAN 16 SEP 80 1.0 20.0 0.0 3.0 0.0 1.5 0.0 0.5 3.3 14 OCT 80 74.0 94.0 2.0 6.0 1.0 9.5 0.0 11.5 24.0 19 NOV 80 148.5 417.5 31.5 370.0 20.5 175.5 28.0 168.5 172.5 10 DEC 80 26.0 473.0 26.0 650.0 7.5 352.5 79.5 2630.0 530.6 14 JAN 81 5.5 117.0 0.0 16.5 34.0 12 FEB 01 11.0 255.5 2.5 66.0 4.5 224.5 32.5 156.0 94.1 NEAN 52.1 252.0 11.3 202.0 6.7 152.7 23.3 500.5 153.2 BLUE CRAB STATION DATE CDCD CDCN FKRD FKRN DBCD DBCN OYCD OYCN HEAN

--------- - - - - _ _ = - - --------- --

16 SEP 80 12.5 115.0 10.0 47.0 8.5 27.5 29.0 49.5 37.4 14 0C1 80 22.5 142.5 2.0 38.5 9.5 94.0 7.0 24.0 42.5 19 NOV 80 0.0 1.0 0.0 3.5 0.0 0.0 3.0 31.0 40 10 DEC 80 0.0 0.0 0.0 8.0 0.0 1.0 0.5 28.0 4.7 0.5 0.0 0.0 0.0 0.1 14 JAN 81 12 FED 81 0.0 1.0 0.0 0.5 0.5 0.0 4.0 15.0 2.6 NEAN 7.0 51.9 2.1 16.3 3.7 24.5 7.3 24.6 16.7 Note:

CDC = Cedar Creek; FKR = Forked River; DBC = Double Creek; OYC = Oyster Creek.

Last letter of station code denotes day sampling (D) or night sampling (N).

Dash (--) indicates sampling not done.

e

TABLE 3-5

( cont.')

ELUEFISH STATIDH DATE CDCD CDCN FhRD FERN DBCD DBCN OYCD OYCN HEAN 16 SEP 80 0.0 0.5 15.0 0.0 9.0 0.0 0.0 0.5 31 14 OCT 80 0.0 0.0 0.0 0.0 0.0 0.0 1.0 0.5 0.2 19 NOV 80 00 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 10 DEC 80 0.0 0.0 6.0 0.0 0.0 0.0 0.0 0.0 0.0 14 JAN 81 0.0 0.0 0.0 0.0 0.0 12 FEB 81 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 00 NEAN 0.0 0.1 2.5 0.0 1.8 0.0 0.2 0.2 0.4 BAY ANCH0VY STATION DATE CDCD CDCN FKRD FKRN DBCD DBCH OYCD OYCN HEAN

=-

_=.

= _ -. _ - - _ _.

16 SEP 80 0.0 0.0 71.0 0.5 15.0 0.0 0.0 0.5 10.7 14 DCT 80 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 19 NOV 80 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 10 DEC 80 0.0 0.0 0.0 0.0 0.0 00 2.0 1.5 0.4 0.0 0.0 0.0 14 JAN 81 0.0 0.0 12 FED 81 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 NEAN 0.0 0.0 11.8 0.1 3.0 0.0 0.3 0.3 2.1

TABLE 3-5 (cont.)

ATLANTIC SILVERSIDE STATION DATE CDCD CDCN FKRD FKRN DBCD DECH OYCD OYCN NEAN

_=_=

16 SEP 80 5.5 0.0 15.0 0.5 30.0 0.0 1.0 0.0 6.5 14 DCT 80 0.0 21.0 1.5 15.5 1.5 2.0 0.0 0.0 5.2 19 NOV 80 0.0 0.0 0.5 0.0 0.0 1.5 26.0 7.5 4.4 10 DEC 80 0.0 0.0 0.0 0.5 0.0 0.5 8.0 5.0 1.8 6.0 0.5 16 14 JAN 81 0.0 0.0 12 FEB B1 0.0 0.0 0.0 0.0 0.0 0.5 164.5 43.0 26.0 NEAN 1.1 4.2 2.8 2.8 6.3 0.9 34.3 9.3 8.1 1

, j 1

8 X 000000 X

000000 A

9 A-M 555005 H-280000 1

4255 6 14 C

21 1111 IY E

e TR E

G-D 000000 l

NA G D 000000 AU N

E-N E-b LR A M 400405 A

M 150000 a

TB R =

3443 4 R

94 l

1 i

AE a

F v

D N 000000

- N 000000 I -

a N -

I-A M 013604 M 380000 0

1111 1

70 t

1 o

,8 n

Y9 V1 00.

101100

=00.

000000 a

O t

HR 00-CE 44-55-a NB

,11 -

33-d AM

- 09.

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=

E

_ 09.

510000 A

YT AP BE 09-N. 04-h

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on 09.

220000 09.

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) - 09 1

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09-tl FB E

H-01 -

M 59-a UT H

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LA ee BG S

S 09.

831100 09.

100000 dt E

B L

L=_09 1

a A

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BR R '. 39-H V b4-de AA C

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N U N 0 9. - 596202 U

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- 09 12 L

09 tX U

H 67 B H 59 sA LE T -

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0 9.- 130000 Dh FE E_09.

331301 L

L OS

- 09 0832 2 09-1 St Sm

- 45 11 04 g

11

n N -

he O7 tl 0 9.-

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-_800000 g

T5 U4 09-8634 1

09-3 nn B

23 21 59-ea I Y li d

RB ne T

09 SD 09.

454102 000000 am e

I E

- 09 32 09 DT 1 -

4 m=

C

=D YE E

CL XM NL

- 686702 820000 EO UC D

148702 D

280000 sh Q

S 2111 1

S-21 EE ht t g RD gn FI 7.* 4007

. 970000 ne

- S X

el HR X- - 911900 430000 l

TE

- 3443 4 93 t

GV 1

f s NL EI

- 637502 030000 oe t

LS N 7077 4 N5

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ms u

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- 000011 000011 n=

- 888888

- 888888 E

PTVCNB

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E PTVCNB E.ECOEAE I

B T

ECOEAE T -

SONDJF NM A

A A

__ S O N D J F D

T D

649042 649042

- 111111 111111

e to N

i l

TABLE 3-6 (cont.)

BAY HNCHOVY LENGTH INTERVALS (MN)

RANGE 0.0 20.0 40.0 60.0 80.0 100.0 120.0 140.0 DATE N

X SD 19.9 39.9 59.9 79.9 99.9 119.9 139.9 >140.0 MIN MED NAX

_ _ _ =

16 SEP 80 83 44.7 9.4 0

18 61 3

1 0

0 0

27.0 45.0 03.0 14 OCT 80 0

0.0 0.0 0

0 0

0 0.0 0.0 0.0 19 HOV 80 0

0.0 0.0 0

0 0

0 0.0 00 0.0 10 DEC 80 7 52.0 15.8 0

1 5

0 1

0 0

0 32.0 51.0 87.0 14 JAN 81

~0 0.0 0.0 0

0 0

0 0.0 0.0 0.0 12 FEB 81 0

0.0 0.0 0

0 0

0 0.0 0.0 0.0 ATLANTIC SILVERSIDE LENGTH INTERVALS (NM)

_ - - - - - - - = - -

...m--

RANGE

- = - -

0.0 20.0 40.0 60.0 80.0 100.0 120.0 140.0

=-

DATE N

X SD 19.9 39.9 59.9 79.9 99.9 119.9 139.9 >140.0 MIN HED MAX

_= _____ _____ _____ _____ _____ _ _. _ _ _____

16 SEP 80 104 77.9 15.2 0

0 10 54 32 6

2 0

48.0 76.0 129.0 14 OCT 80 83 91.0 16.1 0

0 2

17 41 19 4

0 45.0 92.0 129.0 19 NOV B0 71 102.3 18.9 0

0 1

8 19 29 14 0

52.0 104.0 136.0 10 DEC 80 28 103.5 16.5 0

0 0

3 8

12 5

0 75.0 102.5 137.0 14 JAN 81 13 92.2 10.7 0

0 0

2 8

3 0

0 77.0 92.0 116.0 12 FEB 81 126 93.8 15.7 0

0 1

23 58 35 9

0 54.0 93.5 133.0

TABLE 3-7 TOTAL NUMBER, PERCENT COMPOSITION, AND CUMULATIVE PERCENT OF FISH AND MACR 0 INVERTEBRATES COLLECTED BY 12.2-m SEINE IN BARNEGAT BAY, SEPTEMBER 1980 - FEBRUARY 1981 SPP. NAME NUMBER CUMU. %

CRANGON SEPTEMSPINOSA 17019.000 62.764 62.764 MENIDIA MENIDIA 2671.000 9.850 72.614 CRANGON SEPTEnSPIN JUV 1883.000 6.944 79.558 PALAEMONETES VULOARIS 1498.000 5.524 85.083 ANCHOA MITCHILLI 1402.000 5.170-90.253 APELTE3 00ADRACUS 962.000 3.548 93.801 CALLINECTES SAPIDUS 499.000 1.840 95.641 GOBIOSCMA BOSCI 238.000 0.878 96.519 FUNDULUS HETER 0CLITUS 214.000 0.739 97.308 FUNDULUS MAJALIS 180.000 0.664 97.972 MENIDIA EERYLLINA 123.000 0.454 98.425 CYPRINODON VARIEGATUS 64.000 0.236 99.661 LUCANIA PARVA 56.000 0.207 98.868 HIPPOLYTE SP 54.000 0.199 99.067 MENIDIA MENIDIA JUV 49.000 0.181 99.248 ANGUILLA ROSTRATA 29.000 0.107 99.355 FAMILY XANTHIDAE JUV.

27.000 0.100 99.454 TRACHINOTUS FALCATUS 18.000 0.066 99.521 STRONGYLURA MARINA 15.000 0.055 99.576 SYNGNATHUS FUSCUS 15.000 0.055

??.631 BREV00RTIA TYRANNUS JUV 14.000 0.052 99.683 MUGIL CEPHALUS 13.000 0.048 99.731 MEMBRAS MARTINICA 10.000 0.037 99.768 AMMODYTES AMERICANUS 10.000 0.037 99.805 CHASMODES BOSQUIANUS 7.000 0.026 99.830 ANCHOA HEPSETUS 6.000 0.022 99.352 ANGUILLA ROSTRATA JUV.

5.000 0.018 99.871 PSEUD 0PLEURONECTES AMERI 5.000 0.018 99.889 OPSANUS TAU 3.000 0.011 99.900 LUTJANUS GRISPJS 3.000 0.011 99.911 MUGIL CUREMA 3.000 0.011 99.923 FUNDULUS DIAPHANUS 2.000 0.007 99.930 GASTER 0STEUS ACULEATUS 2.000 0.007 99.937 POMATOMUS SALTATRIX 2.000 0.007 99.945 PEPRILUS TRIACANTHUS 2.000 0.007 99.952 NEOPANOPE TEXANA SAYI 2.000 0.007 99.959 UROPHYCIS CHUSS 1.000 0.004 99.963 HYPORHAMPHUS UNIFASCIATU 1.000 0.004 99.967 MENIDIA SP 1.000 0.004 99.970

~

MORONE AMERICANA 1.000 0.004 99.974 TAUTOGA ONITIS 1.000 0.004 99.978 ASTROSCOPUS GUTTATUS 1.000 0.004 99.932 PRION 0TUS CAROLINUS 1.000 0.004 99.085 PRION 0TUS EVOLANS 1.000 0.004 99.989 ETROPUS MICROSTOMUS 1.000 0.004 99.993 PARALICHTHYS DENTATUS 1.000 0.004 99.994 PAGURUS LONGICARPUS 1.000 0.004 100.000 Note:

Lifestage is undetermined unless otherwise indicated.

TABLE 3-8 MEAN NUMBER FER SEINE HAUL (12.2-m) 0F SAND SHRIMP, BLUE CRAB, BAY ANCHOVY, AND ATLANT!C SILVERSIDE, BARNEGAT BAY SAMPLING, SEPTEMBER 1980 - FEBRUARY 1981 SAND SHRIMP STATION DATE CDCD CDCN FKRD FKRN DBCD DBCH OYCD OYCN MEAN 16 SEP 80 7.5 137.5 0.5 44.5 1.5 b4.5 05b 00.5 37.1 14 OCT 80 239.5 463.0 21.0 253.0 8.5 879.5 2.0 78.5 243.1 19 NOV 80 187.5 191.5 15.5 107.0 41.0 178.0 42.0 74.0 105.2 10 DEC 80 66.5 1033.0 53.0 1048.0 12.5 613.0 147.0 765.5 488.7 1.0 88.5 138.5 l

8.0 456.5 1jJAN81

. FEB 81 21.0 830.0 17.0 206.0 161.5 325.0 67.0 521.5 268.6 MEAN 104.4 531.0 19.2 352.5 46.0 404.0 33.7 268.1 217.3 BLUE CRAB STATION DA1E CDCD CDCN FKRD FKRN DBCD DBCN OYCD OYCN MEAN

.--- --=

16 SEP 80 3.0 13.0 3.0 10.5 8.0 6.0 3.0 18.5 8.1 14 OCT SO 4.5 34.0 5.5 17.0 1.5 42.5 20.5 43.5 21.1 19 NOV 80 0.0 0.0 0.0 0.0 1.0 0.0 0.0 1.0 0.2 10 DEC 80 0.0 0.0 0.0 0.0 0.0 0.0 0.0 4.0 0.5 0.0 0.0 0.0 0.0 0.0 14 JAN 81 12 FEB 81 2.0 0.0 0.0 0.0 0.0 0.0 0.0 7.5 1.2 NEAN 1.9 9.4 1.4 4.6 2.1 9.7 4.3 12.4 5.7 s

Note:

CDC = Cedar Creek; FKR = Forked River; DBC = Double Creek; OYC = Oyster Creek.

Last letter of station code denotes day sampling (D) or night sampling (N).

Dash (--) indicates sampling not done.

TABLE 3-8 (cont.)

BAY ANCHOVY STATION DATE CDCD CDCN FKRD FERN DBCD DBCN OYCD OYCN MEAN

- _=

--- =_

16 SEP 80 3.0 103.0 8.0 25.0 193.5 329.5 1.5 12.5 04.5 14 CCT 80 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 19 NOV 80 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 10 DEC 80 0.0 0.0 0.0 0.0 0.0 0.0 0.0 25.0 3.3 14 JAN 01 0.0 0.0 0.0 0.0 0.0 12 FEB 81 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 MEAN 0.6 20.6 1.3 4.2 30.7 65.9 0.3 6.2 16.1 ATLANTIC SILVERSIDE STATIDH DATE CDCD CDCN FKRD FKRN DBCD DBCN OYCD OYCN NEAN

-- - --- ---=.

16 SEP 80 35.5 1.0 118.5 4.5 89.5 14.5 10.5 05 34.3 14 OCT 80 0.0 43.5 26.0 93.0 4.0 19.5 0.0 0.0 23.3 19 NOV 80 1.5 0.0 6.0 0.0 4.5 0.5 157.5 80.5 31.3 10 DEC 80 0.0 1.0 13.0 0.5 1.5 9.0 170.0 212.5 43.0 14 JAN 81 1.0 0.0 2.5 0.0 0.9 12 FEB 81 0.0 0.0 0.0 2.0 24.5 1.0 67 0 228.5 40.4 HEAN 7.4 9.1 27.4 16.7 24.8 8.7 58.6 87.0 31.3 l

l l

TABLE 3-9 LENGTH-FREQUENCY DISTRIBUTIONS OF SAND SHRIMP, BLUE CRAB, BAY ANCHOVY, AND ATLANTIC SILVERSIDE COLLECTED BY 12.2-m SEINE IN BARNEGAT BAY, SEPTEMBER 1980 - FEBRUARY 1981 BAY ANCHOVY LENGTH INTERVALS (MM)

RANGE 0.0 20.0 40.0 60.0 80.0 100 0 120.0 140.0 DATE N

X SD 19.9 39,9 59.9 79.9 99.9 119.9 139.9 1140.0 MIN HED MAX 16 SEP 80 341 35.1 7.8 0

248 91 2

0 0

21.0 34.0 63.0 14 OCT 80 0

0.0 0.0 0

0 0

0 0.0 0.0 0.0 19 NOV 80 0

0.0 0.0 0

0 0

0 0.0 0.0 0.0 10 DEC 80 50 41.5 4.6 0

17 33 0

0 0

31.0 41.5 53.0 14 JAN 81 0

0.0 0.0 0

0 0

0 0.0 0.0 0.0 12 FEB 81 0

0.0 0.0 0

0 0

0 6

0 0.0 0.0 0.0 ATLANTIC SILVERSIDE LENGTH INTERVALS (HM)

RANGE

- =-=

0.0 20.0 40.0 60.0 80.0 100.0 120.0 140.0 DATE N

X SD 19.9 39.9 59.9 79.9 99.? 119.9 135.9 >140.0 HIN HED MAX 16 SEP 80 333 78.6 10.9 0

0 18 153 155 6

1 0

43.0 79.0 124.0 14 OCT 80 282 81.0 15.S 0

0 30 93 128 29 2

0 43.0 82.0 127.0 19 NOV 80 218 78.2 19.6 0

0 52 73 58 32 3

0 41.0 77.0 129.0 10 DEC 80 202 76.7 10.3 0

1 6

133 56 6

0 0

37.0 76.0 113.0 14 JAN 81 5 81.4 3.6 0

0 0

1 4

0 0

0 75.0 82.0 86.0 12 FEB 81 248 79.6 11.7 0

0 9

120 103 16 0

0 51.0 79.0 114.0 Note:

N = number of lengths; X _ mean length; SD = standard deviation; NA = data not available; MIN = sho.' test length; MED = median length; MAY = greatest length.

l l

l

TABLE 3-9 (Cont.)

SAND SHRIMP LENGTH INTERVALS (MM)

RANGE

=--

0.0 20.0 40.0 60.0 80.0 100.0 120.0 140.0

=-

DATE N

X SD 19.9 39.9 59.9 79.9 99.9 119.9 139.9 >140.0 MIN lied MAX 16 SEP 80 268 24.1 6.2 71 195 2

0 0

0 13.0 23.0 41 0 14 OCT 80 663 29.4 8.8 59 496 108 0

0 0

15.0 27.0 57.0 19 NOV 80 599 41.4 7.6 3

243 350 3

0 0

15.0 41.0 63 0 10 DEC 80 610 37.4 8.8 10 354 244 2

0 0

16.0 37.0 64.0 14 JAN 81 286 T1.5 9.8 30 205 51 0

0 0

13.0 30.0 59.0 12 FEB 81 1018 33.1 10.3 83 644 238 3

0 0

14.0 33.0 65.0 BLUE CRAB LENGTH INTERVALS (MM)

RANGE

=--

=-

0.0 20.0 40.0 60.0 80.0 100.0 120.0 140.0 DATE N

X SD 19.9 39.9 59.9 79.9 99.9 119.9 139.9 >140.0 MIN MED MAX 16 SEP 80 130 22.6 16.5 72 50 4

2 1

0 1

0 6.0 18.0 125.0 14 OCT 80 284 31.4 12.8 56 139 82 6

1 0

0 0

7.0 30.0 80.0 19 NOV 80 4 36.0 5.5 0

3 1

0 0

0 30.0 35.0 44.0 10 DEC 80 8 31.9 13.4 1

6 1

0 0

0 10.0 33.0 59.0 14 JAN 81 0

0.0 0.0 0

0 0

0 0.0 0.0 0.0 12 FEB 81 19 36.3 17.5 5

5 7

2 0

0 0

0 10.0 35 0 74.0

TABLE 3-10 SURFACE WATER QUALITY MEASUREMENTS ASSOCIATED WITH BARNEGAT BAY SEINE SAMPLING, SEPTEMBER 1980 - FEBRUARY 1981 WATER TEHFERATURE (C)

ST AT ION-DATE CDCD CDCN FERD FKRN DBCD DBCN OYCD OYCN HEAN 16 SEP 80 21.7 20.7 24.7 22.2 21.2 20.4 24.0 25.6 22.6 14 OCT 80 13.0 13.1 14.0 12.0 13.9 11.7 17 7 15.2 13.8 19 NOV 80 4.9 4.3 5.5 5.2 4.9 4.1 91 0.1 5.8 10 DEC 80 4.5 5.1

5..!

5.2 5.1 5.')

95 9.0 6.1 14 JAN 81 2.9 1.0 44 2.9 2.8 12 FED 81 2.5 2.0 9.7 9.1 6.5 7.4 13 2 13.4 8.0 NEAN 9.3 9.0 10.4 9.1 10.3 9.7 13 0 12.4 10.5 DISSOLVED OXYGEN (ms/1)

STATI0H DATE CDCD CDCN FKRD FhRN DBCD DBCN OYCD OYCN HEAN

__=

=_

16 SEP 80 8.0 6.5 6.0 5.5 7.2 6.9 7.9 6.3 6.8 14 DCT 80 6.7 11.1 9.4 7.1 8.1 8.9 8.5 8.1 8.5 19 NOV 80 9.9 11.0 9.7 9.7 9.9 10.0 9.7 9.2 9.9 10 DEC 80 10.6 10.3 10.2 9.9 10.6 10.4 11 1 10.0 10.4 14 JAN 91 12.4 14.0 13.5 14.5 14.1 12 FED 81 10.0 10.0 8.9 8.8 9.3 9.1 8.7 83 9.1 NEAN 9.9 9.8 9.4 9.2 9.0 9.1 10 2 9.4 9.4 Note:

CDC = Cedar Creek; FKR = Forked River; DBC = Double Creek; OYC = Oyster Creek.

Last letter of station code denotes day sampling (D) or night sat,aling (N).

Dash (--) indicates sampling not done.

Data records are individual measurements.

l

TABLE 3-10 (cont.)

eH STATION DATE CDCD CDCM FKRD FKRN DBCD DBCN DYCD OYCN MEAN

.=_-

16 SEP 80 7.7 7.5 7.7 7.6 7.7 7.8 7.7 7.6 7.7 14 OCT 80 7.9 8.3 8.1 8.0 0.0 0.1 8.0 7.9 8.0 19 NOV 80 7.9 7.8 7.9 7.9 8.0 7.9 7.9 7.8 7.9 10 DEC 80 7.8 7.8 7.8 7.9 79 7.9 7.9 7.0 7.9 7.9 7.5 7.9 7.9 7.8 14 JAN 81 12 FEB 81 7.9 7.9 8.2 8.0 8.1 8.1 8.2 8.0 8.1 MEAN 7.8 7.9 7.9 7.8 7.9 8.0 7.9 7.8 7.9 SALINITY (Pet)

STATION DATE CiC0 CDCN FERD FKRN DBCD DBCN DYCD OYCN MEAN

=.

.= -____-__-

___- --_-_-_-- _-=- __= --

16 SEP 80 15.0 24.2 27.0 27.7 28.0 27.4 26.6 27.3 25.4 14 OCT 80 22.0 22.2 24.9 25.7 26.2 26.0 23.9 24.8 24.5 19 NOV 80 23.5 22.7 26.6 26.0 27.3 26.5 26.5 25.7 25.6 10 DEC 80 22.4 18.4 25.0 25.5 26.8 27.2 24.4 24.5 24.3 22.2 17.5 23.8 25.1 22.1 14 JAN 81 12 FEB 81 22.0 23.0 25.3 25.8 27.4 28.0 24.5 25.8 25.2 NEAN 21.0 22.1 25.2 24 7 27 1 27.0

24.9 25.5 24.7

TABLE 3-11 BOTTOM WATER QUALITY MEASUREMENTS ASSOCIATED WITH BARNEGAT BAY OTTER TRAWL SAMPLING, SEPTEMBER 1980 - FEBRUARY 1981 WATER TEMFERAT!'RE (C)

STATION DATE CDCD CDCN FERP FERN DBCD DDCN OYCD OYCN MEAN 9 SEP 80 23.0 24.2 23.9 24.1 23.1 23.5 28.5 29.3 24.9 7 DCT 80 16.3 16.6 16.6 16.9 16.8 15.7 22.2 22.3 17.9 5 NOV 80 9.6 9.8 10.4 10.1 9.3 9.0 15.4 14.2 11.0 4 DEC 80 0.2 2.2 0.9 24 1.1 2.4 10.5 8.3 3.5 7 JAN 81 0.0 1.4 4.0 2.4 4 FEB 81 2.0 2.0 0.3 0.5 4.0 4.2 2.2 MEAN 10.2 11.0 11.5 10.7 12.6 10.2 13.7 13 8 11.8 DISSOLVED OXYGEN (ms/1)

STATION DATE CDCD CDCN FKRD FKRN DDCD DBCN OYCD OYCN MEAN 9 SEP 80 5.6 6.0 5.4 6.1 6.1 7.4 5.0 5.1 5.8 7 OCT 80 7.0 7.4 7.7 6.9 7.9 6.9 7.4 6.7 7.2 5 NOV 80 8.6 8.5 8.9 8.2 9.2 9.0 8.5 8.4 8.7 4 DEC 00 11.1 11.4 10.5 10.9 10.9 11.0 9.9 10 4 10.8 12.4 10.8 12.4 11.3 11.7 7 JAN 81 4 FEB 81 9.9 10.1 10.6 12.8 11.0 13.8 10.4 12.3 11.3 MEAN 8.4 8.7 9.3 9.3 9-)

9.6 8.9 9.0 9.0 Note:

CDC = Cedar Creek; FKR = Forked River; DBC = Double Creek; OYC = Oyster Creek.

Last letter of station code denotes day sampling (D) or night sac.pling (N).

Dash (--) indicates sampling not done.

thta reoords are individual measurements.

TABLE 3-11 (Cont.)

I l

pH STATION DATE CDCD CDCN FKRD FKRN DBCD DBCN OYi,D OYCN MEAN

- --------- --=__

9 ',EP 80 7.7 7.8 7.9 7.9 7.9 8.0 7.8 7.8 7.9 7 DCT 80 7.9 8.0 8.0 0.1 8.1 7.9 8.0 8.0 8.0 5 NOV 80 78 7.9 7.9 7.9 7.8 7.9 7.8 7.8 7.8 4 DEC 80 7.5 7.7 7.9 7.9 7.9 8.0 7.8 7.8 7.8 7 JAN 81 8.2 8.2 8.0 7.9 8.0 4 FEB 81 7.9 7.9 8.1 7.9 8.0 8.1 8.1 8.1 8.0 NEAN 7.8 7.9 8.0 8.0 7.9 7.9 7.9 7.9 7.9 SALINITY (pet)

STATION DATE CDCD CDCN FERD FKRN DBCD DBCN OYCD OYCN MEAN

--------- --------- - = -

=

9 SEP 80 22.1 23.8 24.4 25.0 25.4 25.1 24.1 24.8 24.3 7 OCT 80 24.5 25.6 26.3 26.5 27.0 30.6 25.8 26.1 26.5 5 NOV 80 25.9 24.4 26.6

?7.5 26.9 27.1 25.2 26.5 26.2 4 DCC 80 20.2 18.5 23.6 24.0 26.0 26.8 22.1 23.6 23.1 7 JAN 81 25.6 27.0 25.5 73.1 25.3 4 FER 81 20.4 23.1 25.3 26.3 27.6 27.1 25.3 26.0 25.1 NEAN 22.6 23.1 25.3 26.0 26.6 27.3 24.7 25.0 25.1

~

4 IMPINGEMENT OF FINFISH AND MACROIr/ERTEBRATES ON THE INTAKE SCREENS 4.1 BIOLOGICAL DATA Impingement collections from September 1980 through February 1931 yielded 113 taxa: 27 macroinvertebrates, 85 finfish, and 1 species of turtle (Table 4-1). Macroinvertebrates dominated the catch; sand shrimp (Crangon asptemspinosa) accounted for 76 percent of the total numbers collected, and with the blue crab (f.allinectes sapidus) and grass shrimp (Palaemonetes vulgaris) made up 87.9 percent of all organisms collected. Atlantic silver-

)

side (Menidia menidia) (4.2 percent) and naked goby (Gobiosoma bosci) (1.9 p.rrent) were the only finfish that contributed more than 1 percent to the tc tal. Smallmouth flounder (Etrepus microstomus) (0.9 percent) and northern pipefish (Syngnathus fuscus) (0.8 percent) round out the top 95 percent of all organisms collected from the screens.

All of the above species except grass shrimp are key species, as designated in the Technical Specifications, and thus receive emphasis in environmental monitoring at OCNGS. Eight other key species were taken in impingement samples but, with the exception of winter flounder (Pseudopleuronectes americanus)

(0.7 percent), none were abundant. These were bay anchovy ( Anchoa mitchelli),

Atlantic menhaden (Brevoortia tyrranus), summer flounder (Paralichthys dentatus), weakfish (Cynoscion regalis), bluefish (Pomatomus saltatrix),

northern puffer (Sphoeroides maculatus), and northern kingfish (Menticirrhus l

saxatilis).

Estimates of total weekly impingement by number were made for the study psriod (Table 4-2).

Weekly estimates of numbers of organisms impinged during l

this period ranged from 8,629 in early October to 1,149,223 in rid-November.

The peak abundance is directly due to the abundance of sand shrimp, which peaked during the scue week at more than 800,000 individuals. Sand shrimp abundance increased from near zero to high weekly numbers during the latter part of October and remained high throughout the rest of the study period.

The abundance of winter flounder was similar to that of sand shrimp: peak abundance (14,707. individuals) occurred in mid-November and the number of estimated flounder impinged increased dramatically during early November and remained high for the rest of the study period. Both species exploit B rnegat Bay resources during the winter period as seasont) residents.

Atlantic silverside and northern pipefish were collected in high numbers during the fall; peak weekly estimates of over 100,000 for Atlantic silver-side and almost 19,000 for northern pipefish occurred during mid-November.

Catch estimates for Atlantic silverside dropped during early January (the period of minimum water temperatures), then rose to high levels throughout the remainder of the sampling interval. Northern pipefish numbers gradually decreased through November and December to levels comparable to those of S ptember and October of the previous year. Both Atlantic silverside and northern pipefish are year-round residents.

4-1

Fenk blue crab abundances occurred from September through mid-November with the maximum weekly estimate of over 51,000. individuals occurring in late Sep tember. Blue crab is a year-round resident of Barnegat Bay that is active only during the warmer seasons.

The eight remaining species all exhibited similar trends in abundance: blueback herring (Alosa aestivalis), Atlantic menhader. bay anchovy, bluefish, weaktish, northern kingfish, summer flounder, and northern puffer use Barnegat Bay resources only during the warmer sea-sons and then, for the most part, leave the bay during periods of decreasing water temperature. The periods of increased abundance of these species in impingement samples reflect their exodus from the bay and consequent greater vulnerability to impingement.

Estimates of total weekly impingement by weight are presentad in Table 4-3 Weekly estimates of weight ranged from -165 kilograms in mid-February to a maxiaum of 6,175 kilograms by mid-November. The peak is a direct result of the abundance of both sand shrimp (1,842 kg) and winter flounder (2,281 kg) that occurred during the same week. Sand shrimp weight rose rapidly during mid-November and remained high throughout the rest of the winter, fbilowing the general numerical trends noted earlier. Likewise, winter flounder weight began to rise in early November and remained high throughout the rest of the study period. Blue crab weekly estimated weight was greatest from the beginning of this study period through mid-November, similar to the numerical distribution; however, the peak weel:1y estimated weight of more than 1,100 kilograms occurred during mid-October as opposed to the mid-September peak for numerical abundance. This peak is due to the presence of larger crabs that appeared in the samples during that period.

All other species, except bay anchovy, exhibited maximum weight estimates during the period of falling temperatures, primarily October and November. Maximum bay anchovy weights appear =d in early September, which probably represents the end of adult schooling activity in Barnegat Bay.

Total numbers and weights impinged for the entire September 1980 - Februarv 1981 study period were computed with 80 percent confidence intervals for abundant and key species and for all species combined (Table 4 4).

A tota:

of more than 5.5 million organisms was estimated to have been impinged during the study period. Sand shrimp accounted for the bulk of the catch, contri-buting 4.2 million individuals; blue crab and Atlantic silverside also added substantially to the estimate with more than 340,000 and 245,000 individuals, respectively. More than 26,000 kilograms of finfish and macroinvertebrates were estimated to have been impinged throughout the study period. Winter flounder composed the greatest portion of that amount with >8,300 kilograms.

Blue crab (6,700 kg), sand shrimp (5,100 kg), Atlantic silverside (1,400 kg),

and summer flounder (1,400 kg) were major contributors to the total estimate.

Table 4-5 provides the basis from which day and night catch comparisons can be made. Of the eight species that make up more than 0.5 percent of the total screen catch, six were caught in greater numbers during the night. Sand shrimp, blue crab, grass shrimp, Atlantic silverside, smallmouth flounder, and winter flounder night catches con'tributed 70.6-89.7 percent of the total catch.

Northern pipefish catches were evenly split between night and day samples with 53 percent of the catch occurring at night.

Naked goby were generally caught during the day; night catches accounted for only 35.8 percent of the 4-2

1 l

total catch during the six-month study period. Night catches contributed 79.2 percent of the totcl catch for all species combined.

This value is slightly lower than the values obtained during previous studies by Miller (1973) and Ecological Analysts (1981)--83 and 86.9 percent, respectively.

The composition of the impingement catch, in general, reflected the composi-tion of the Barnegat Bay fisheries collections during the September 1980 -

February 1981 period. The dramatic increase of sand shrimp numbers on the screen that began in late October - early November can be seen also in the two beach seines and the otter trawl catches of that period (Chapter 3).

Catches in all three gear types remained high throughout the rest of the study period (Tables 3-2, 3-5, and 3-8).

The declining blue crab catch that btgan in mid-November and continued into December on the traveling screens also was observable in all field gears. Atlantic silvercide catches, which l

wsre basically bimodal on the screens (caused by a two-week low in catches during mid-January), were reflected in the 40-ft seine catches during the l

i same period. Winter flounder catches in the field otter trawls were greatest l

l from December through the remainder of the study.

No large numbers of vinter I

flounder were collected in November trauls, a peak period of screen abundance.

This is probably because trawl samples were collected during the first week of that month, a period that reflects only an initial increase of abundance on the screens.

The specific differences observable between screen catches and bay collec-tions, in terms of absolute numbers, may be due to several factors.

The exact time of sampling efforts, water temperature differences at the various stations, and species-specific behavior are among the important parameters that can affect the measured rate of impingement on the Oyster Creek Nuclear G;nerating Station traveling screens.

4.2 WA7ER QUALITY DATA ASSOCIATED WITH IMPINGEMENT SAMPLING Summarized water quality measurements for each impingement sampling date are shown in Tables 4-5 through 4-9.

Mean water temperature values ranged from a low of -0.9 C on 5 January 1981 to a maximum of 28.5 C on 2 September 1980; little difference can be noted between surface and bottom readings and between day and night readings (Table 4-6).

Dissolved oxygen values i

ranged from a low of 5.2 mg/ liter on 2 September 1980 to a maximum of 14.7 mg/ liter on 19 January 1981. As with temperature, no major differ-ences are apparent between surface and bottom or between day and night data (Table 4-7).

Salinity values ranged from 23.4 to 28.7 ppt; again no time-of-day or depth differences are apparent upon visual inspection of the data (Table 4-8).

Median pH values ranged between 7.2 and 8.3 throughout the study period (Table 4-9).

l l

4-3 1

j TABLE 4-1 TOTAL NUMBER COLLECTED, PERCENT COMPOSITION, AND CUMULATIVE PERCENT OF.FINFISH, OTHER VERTEBRATES, AND MACR 0 INVERTEBRATES IMPINGED AT THE OYSTER CREEK NUCLEAR GENERATING STATION, SEPTENBER 1980 - FEBRUARY 1981 SPP. HAME NUMBER CUMU. %

CRAN 00N SEPTEMSPINOSA 320909.000 75.978 75.978 CALLINECTES SAPIDUS 27858 000 6 596 82.574 PALAEMONETES VULGARIS 22322 000 5.285 87.859 MENIDIA MENIDIA 17795 000 4.213 92.072 GOBIOSONA BOSCI 7866 000 1.862 93.934 i

ETROPUS MICROSTOMUS 3784.000 0.d96 94.830 SYNGNATHUS FUSCUS 3374 000 0.799 95.429 PSEUD 0PLEURONECTES AMERI 2838.000 0.672 96.301 ALOSA AESTIVALIS 1883 000 0.446 96.747 CLASS SCYPH0ZOA 1873 000 0 443 97.190 APELTES QUADRACUS 1802 000 0 427 97.417 ANCHOA MITCH1LLI 1157 000 0.274 97.891 HIPPOCAMPUS ERECTUS 1099 000 0.260 98.151 CYPRINODON VARIEGATUS 938 000 0.222 98.373 BREV00RTIA TYRANNUS 648.000 0.153 98.527 PARALICHTHYS DENTATUS 575 000 0.134 98.663 CYNOSCION REGALIS 490.000 0.116 98.779 TAUTOGA ONITIS 482 000 0.114 98.893 MYOX0CEPHALUS AENAEUS 474 000 0.113 99.006 ANGUILLA ROSTRATA 329.000 0.078 99.084 PRION 0TUS EVOLANS 309.000 0.073 99.157 OPSANUS TAU 295.000 0.070 99.227 CHASH0 DES BOSQUIANUS 267.000 0.063 99.290 PHYLUM NEMERTEA 233.000 0.055 99.345 ALOSA PSEUD 0HAREHOUS 168.000 0.040 99.385 FUNDULUS HETER 0CLITUS 154.000 0.036 99.421 CENTROPRISTIS STRIATA 134.000 0.032 99.453 ETRUMEUS TERES 124.000 0.029 99.483 PEPRILUS TRIACANTHUS 124.000 0.029 99.512 i

PORTUNUS GIBBESII 120.000 0.028 99.540 PENAEUS AZTECUS 117.000 0.028 99.568 TRINECTES HACULATUS 102.000 0.024 99.592 OVALIPES OCELLATUS 101.000 0.024 99.616 CONGER OCEANICUS 99.000 0.023 99.640 SCOPHTHALMUS AQU0 SUS 81.000 0.021 99.460 HIPPOLYTE SP 81.000 0.019 99.679 FAMILY XANTHILAE JUV.

79.000 0.019 49.698 AMHODYTES ANERICANUS 78.000 0.018 79.717 MUGIL CEPHALUS 74.000 0.018 99.734 SYN 0DUS F0ETENS 73.000 0.017 99.751 P0HATOMUS SALTATRIX 73.000 0.017 99.769 ASTROSCOPUS GUTTATUS 67.000 0.016 99.785 RISSOLA HARGINATA 52.000 0.012 99.797 MENIDIA BERYLLINA 52.000 0.012 99.809 LEIOSTOHUS XANTHURUS 51.000 0.012 99.821

TABLE 4-1 (Cont.)

SPP. NAME NUMBER CUMU. %

GASTER 0STEUS ACULEATUS 48.000 0.011 99.033 LIBINIA DUBIA 48 000 0.011 99 844 CARANX HIPPOS 47.000 0.011 99.855

(

SOUILLA EHPUSA 45.000 0.011 99.866 TAUT 000LABRUS ADSPERSUS 44.000 0.010 99.876 MORONE AMERICANA 42.000 0.010 99 886 SPHOEROIDES MACULATUS 39.000 0.009 99.895 HYPSOBLENNIUS HENTZI 36.000 0.009 99.904 CLASS HOLOTHUR0 IDEA 30.000 0.007 99.911 ALOSA SAPIDISSIMA 28.000 0.007 99.918 LOLLIGUNCOLA BREVIS 25.000 0.006 99.924 LUTJANUS GRISEUS 21.000 0.005 99.929 MUGIL CUREMA 18.000 0.004 99.933 LIHULUS POLYPHEMUS 17.000 0.004 99.937 NEOPA40PE TEXANA SAYI 17.000 0.004 99.941 RACHYCENTRON CANADUM 15.000 0.004 99.944 SELENE V0MER 14.000 0.003 99.948 DOROSOMA CEPEDIANUM 13 000 0.003 99.951 STENOTOMUS CHRYSUPS 13.000 0.003 99.954 FUNDULUS HAJALIS 11.000 0.003 99.956 MEMBRAS MARTINICA 11.000 0.003 99.959 CHAETODON OCELLATUS 11.000 0.003 99.962 CALLINECTES SIMILIS 11.000 0.003 99.964 PANOPEUS HERBSTII 11.000 0.003 99.967 PRIONOTUS CAROLINUS 10.000

'O.002 99.969 CANCER IRRORATUS 10.000 0.002 99.972 FUNDULUS DIAPHANUS 9.000 0.002 99.974 STRONGYLURA MARINA 8.000 0.002 99.976 UROPHYCIS CHUSS 7.000 0.002 99.977 FISTULARIA TABALARIA 7.000 0.002 99.979 LACTOPHRYS TRIQUETER 7.000 0.002 99.981 PAGURUS LONGICARPUS 6.000 0.001 99.982 CHILOMYCTERUS SCHOEPFI 5.000 0.001 99.983 MYROPHIS PUNCTATUS 4.000 0.001 99.984 BREV00RTIA TYRANNUS LAR 4.000 0.001 99.985 MERLUCCIUS BILINEARIS 4.000 0.001 99 986 MENTICIRRHUS SAXATILIS 4.000 0.001 19.987 ALUTERUS SCHOEPFI 4.000 0.001 99.989 POLINICES DUPLICATUS 4.000 0.001 99.989 ANCHOA HEPSETUS LARVAE 3.000 0.001 99.990 ANCHOA HEPSETUS 3.000 0.001 99.990 SPHYRAENA BOREALIS 3.000 0.001 99.991 MONACANTHUS HISPIDUS 3.000 0.001 79.992 MALACLEMYS TERRAPIN 3.000 0.001 99.992 ANGUILLA R0 STRATA JUV.

2.000 0.000 99.993

s

~

TABLE 4-1 (Cont.)

l SPP. NAME NUMBER CUMU. %

UROPHYCIS REGIUS 2.000 0.000 99.993 UROPHYCIS SP 2.000 0.000 99 994 ALECTIS CRINITUS 2.000 0.000 99.994 BAIRDIELLA CHRYSURA 2.000 0.000 99.995 MUGIL SP 2.000 0.000 99.995 LACTOPHRYS TRIG 0HUS 2.000 0.000 99.996 PORTUNUS SPINIMANUS 2.000 0.000 99.996 CLUPEIDAE 1.000 0.000 99 996 UHBRA PYGH4EA 1 000 0.000 99.997 NOTEMIGONUS CRYSOLEUCAS 1 000 0.000 99 997 HYPORHAMPHUS UNIFASCIATU 1.000 0.000 99.997 MENIDIA SP 1.000 0.000 99 997 ETHEOSTOHA FUSIFURME 1.000 0.000 99.998 DECAPTERUS PUNCTATUS 1.000 0.000 99.998 TRACHINOTUS FALCATUS 1.000 0.000 99.998 CARANJIDAE 1.000 0.000 99.998 SCCRPAENA BRASILIENSIS 1.000 0.000 99.999 PARALICHTHYS OBLONGUS 1.000 0.000 99.999 UPODEBIA AFFINIS 1 000 0.000 99.999 HOMARUS AMERICANUS ZOEA 1.000 0.000 99.999 HOMARUS AMERICANUS JUV 1 000 0.000 99.999 FAMILY XANTHIDAE 1 000 0.000 100.000 RHITHROPANOPEUS HARRISII 1.000 0.000 100.000 e

1

}

TABLE 4-2 WEEKLY ESTIMATED NUM3ER OF SELECTED SPECIES IMPINGED ON THE OYSTER CREEK NUCLEAR GENERATING STATION TRAVELING SCREENS, SEPTEM3ER 1980 - FEBRUARY 1981 Species Blueback Atlantio Bay Atlantic Northern Northern Summe r litnter Northern Sand Blue lis te Herrira Herhaden Anchovy Silverside Piperish Bluerish gkrish Kirefish Flou nde r Flcunder Pu ffer Sh rimp Crab.

Total 1 SEP 80 28 490 1,605 21 70 76 1,488 0

834 0

56 70 38,939 45,343 8 SEP 80 14 0

2,045 0

35 75 477 0

21 0

7 0

25,861 43,214 15 SEP 80 0

7 14 0

7 0

21 0

41 0

0 0

35,322 38,336 22 SEP 80 0

14 164 0

0 28 14 0

35 0

0 0

20,647 21,148 29 SEP 80 0

0 517 26 79 119 223 0

1,376 0

130 17 51,599 60,660 6 OCT 80 0

7 137 0

14 14 28 0

332 0

14 0

6,841 8,629 13 Oct 80 14 35 402 96 133 43 324 0

2,327 0

55 43 20,156 28,243 20 OCT 80 0

37 28 38 64 38 176 0

194 0

0 0

17,426 19,102 27 OCT 80 36 1,876 175 6,718 1,883 289 827 21 305 7

88 5,877 30,350 65,353 3 Nov 80 67 1,078 22 9,135 4,321 61 536 0

457 180 88 10,904 31,715 73,876 10 NOV 80 764 2,494 361 102,425 11,094 151 2,652 43 750 927 0

316,168 36,824 562,256 17 NOV 80 6,232 2,345 947 81,215 18,843 41 14 14 567 14,702 0

836,656 2.233 1,149,223 24 NOV 80 0

0 167 695 615 0

0 0

to 153 0

217,055 24 235,772 1 DEC 80 16,087 66 3,004 11.589 3,824 0

0 0

14 177 0

799,420 19,924 899,396 8 DEC 80 787 0

165 4,282 1,104 0

0 0

0 370 0

315,373 1.023 347,178 15 DEC 80 513 0

211 4,725 1.430 0

0 0

39 1,640 0

555,147 569 606,895 22 DEC 80 0

0 23 504 101 0.

0 0

0 5,119 0

400,018 2,019 418,099 29 DEC 80 14 0

14 1,606 445 Oj 0

0 0

3,425 0

352,410 71 380,365 5 JAN 81 0

0 27 247 28 0

0 0

0 3,765 0

270,847 4,252 297,369 12 JAN 81 0

0 28 439 42 0

0 0

0 1,601 0

139,113 2.977 157,010 19 JAN 81 28 0

0 1,865 28 0

0 0

0 925 0

56,346 422 70,680 26 JAN 81 42 0

0 1,039 42 0

0 0

0 1,083 0

11,5S7 1,316 27,976 2 FEB 81 210 28 0

2,380 0

0 0

0 28 5.978 0

12,922 392 27,342 9 FEB 81 28 0

0 532 28 0

0 0

0 2,212 0

46,088 1,064 52.724 16 FEB 81 14 0

0 1,177 0

0 0

275 0

39.423 3.726 58,574 23 FEB 81 539 28 0

4,988 0

0 0

1,609 0

52,205 912 68,774

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TABLE 4-4 TOTAL ESTIMATF.D NUMBER AND WEIGHT (kg) WITH 80 PERCENT CONFIDENCE INTERVA:2 0F KEY ANL ABUNDANT SPECIES IMPINGED AT OYSTER CREEK NUCLEAR GENERATING STATION, SEPTEMBER 1980 - FEBRUARY 1981 Species Number Weight Blueback herring 20,%1 t 19,236 116.14 88.26 Atlantic menhaden 9,044 1 5,566 485.77 296.08 Bay anchovy 9,287 3,416 12.28 4.27 Atlantic silverside 245,409 202,801 1,410.84 1 119.40 Northern pipefish 45,260 32,191 118.81 70.43 Bluefish 971 509 52.36 4.22 Weakfish 6,627 3,954 245.67 1 229.94 Northern kingfish 85 92 12.12 11.87 Summer flounder 7,549 4,176 1,409.38 807.69 Winter flounder 46,554 25,153 8,338.12 4,151.37 Northern puffer 453 2 317 29.47 27.53 Sand shrimp 4,206,493 1.241,583 5,154.89 1 2,695.96 Blue crab 341,969 65,216 6,710.21 1,399.78 Total (a) 5,523,243 1 1,793,926 28,428.29 10,524.18 (a) Total includes taxa not shown above.

TABLE 4-5 TOTAL NUMBER PER 12-HOUR PERIOD AND PERCENT COMPOSITION OF FINFISH AND MACR 0 INVERTEBRATES IMPINGED DURING THE NIGHT (INTN) AND DAY (INTD) AT THE OYSTER CREEK NUCLEAR GENERATING STATION, SEPTEMBER 1980 - FEBRUARY 1981 STATION INTN INTD SPECIES NUMBER FCT NUMBER PCT NUMBER PCT INDIVS COMP INDIVS COMP TOTAL COMP CRANGON SEPTEMSPINOSA 263448.00 78.73 57461.00 63.48 320909.00 75.98 CALLINECTES SAPIDUS 22155.00 6.42 5703.00 6.50 27853.00 4.60 PALAEMONETES VULGARIS 15756.00 4.71 6566.00 7.48 22322.00 5 28 MENIDIA MENIDIA 13319.00 3 98 4476.00 5 10 17795.00 4.21 GOBIOSOMA BOSCI 2013.00 0.84 5053.00 5.76 7866.00 1.86 ETROPUS MICROSTOMUS 3394.00 1.01 390.00 0.44 3784.00 0.90 SYNGNATHUS FUSCUS 1788.00 0.53 1586.00 1 81 3374.00 0.80 PSEUD 0PLEURONECTES AMERI 2344.00 0 70 494.00 0.54 2838.00 0.67 ALOSA AESTIVALIS 1652.00 0.49 231.00 0 26 1883.00 0.45 CLASS SCYPH0ZOA 1157.00 0.35 716.00 0.82 1873.00 0.44 APELTES QUADRACUS 937.00 0.28 865.00 0.99 1802.00 0.43 ANCHOA MITCHILLI 403.00 0.12 754.00 0.84 1157.00 0.27 HIPPOCAMPUS ERECTUS 717.00 0.21 382.00 0.44 1099.00 0 26 CYPRIN000N VARIEGATUS 91.00 0.03 847.00 0 97 938.00 0.22 BREV00RTIA TYRANNUS 415.00 0.12 233.00 0.27 648.00 0 15 PARALICHTHYS DENTATUS 337.00 0.10 238.00 0.27 575.00 0.14 CYHOSCION REGALIS 295.00 0.,09 195.00 0.22 490.00 0.12 TAUTOGA ONITIS 316.00 0.09 166.00 0 19 482.00 0 11 MYOX0CEPHALUS AENAEUS 412.00 0.12 64.00 0 07 476.00 0.11 ANGUILLA ROSTRATA 290.00 0.09 39.00 0.04 329.00 0.08 PRIONOTUS EVOLANS 249.00 0.07 60.00 0.07 309.00 0.07 OPSANUS TAU 225.00 0.07 70 00 0.00 295.00 0.07 l

l CHASM 0 DES BOSQUIANUS 142.00 0.04 125.00 0.14 267.00 0.06 PHYLUM NEMERTEA 207.00 0.06 26.00 0 03 233.00 0.06 l

ALOSA PSEUD 0HARENG'J5 141.00 0.04 27.00 0 03 168.00 0.04 FUNDULUS HETER 0CLIiUS 78.00 0.02 76.00 0.09 154.00 0.04 CENTROPRISTIS STRIATA 100.00 0.03 36.00 0 04 136.00 0.03 ETRUMEUS TERES 84.00 0.03 40.00 0 05 124.00 0.03 PEPRILUS TRIACANTHUS 40.00 0.01 84.00 0.10 124.00 0.03 PORTUNUS GIBBESII 95.00 0.03 25.00 0.03 120.00 0.03 PENAEUS AZTECUS 104.00 0.03 13.00 0 01 117.00 0.03 TRINECTES MACULATUS 84,60 0.03 18.00 0.02 102.00 0.02 OVALIFES OCELLATUS 83.04 0.02 18.00 0.02 101.00 0.02 CONGER OCEANICUS 78.00 0.02 21.00 0.02 99.00 0.02 SCOPHTHALMUS AGU0 SUS 55.00 0.02 32.00 0 04 87.00 0.02 l

HIPPOLYTE SP 0.00 0.00 81.00 0.09 81.00 0.02 FAMILY XANTHIDAE JUV.

46.00 0.01 33.00 0.04 79.00 0.02 AMMODYTES AMERICANUS 54.00 0.02 24.00 0.03 78.00 0.02 OTHER SPECIES 711.00 0.21 486.00 0.55 1197.00 0.28 TOTAL 334615.00 87754.00 422369.00 l

TABLE 4-6 MEM WATER TEMPERATURE VALUES (C) DURING NIGHT (INTN) AND DAY (INID)

IMPINGEMENT SAMPLING AT THE OYSTER CREEK NUCLEAR GENERATING STATION, SEPTEMBER 1980 - FEBRUARY 1981 BOTTON SURFACE DATE INTN 1HTD HEAN DATE ININ INID HEAN 2 SEP 80 28.8 27.6 2H.2 2 SEP 80 28.9 27.7 28.3 8 SEP 80 25.7 25.3 25.5 8 SEP 80 25.8 25.3 25.5

-15 SEP 80 23.2 22.3 22.8 15 SEP 80 23.3 22.3 22.8 22 SEP 80 24.4 24.6 24.5 22 SEP 80 24.4 24.6 24.5 29 SEP 90 18.1 18.7 18.4 29 SEP 80 18.1 18.7 18.4 5 DCT 80 16.9 16.6 16.8 6 OCT 80 16.*

16.6 16.8 13 OCT 80 13.9 13.3 13.6 13 OCT 80 13.9 13.4 13.6 20 OCT 80 16.7 16.5 16.6 20 OCT 80 16.7 16.6 16.6 27 OCT 80 11.5 12.5 12.0

-27 OCT 80 11.6 12.5 12.0 3 NOV 80 11.2 12.5 11.9 3 NOV B0 11.2 12.5 11.8 10 NOV 80 9.3 7.8 8.5 10 NOV 80 9.3 7.8 8.6 17 NOV 80 6.4 5.9 6.2 17 NOV 80 6.4 5.9 6.2 24 NOV 80 6.3 7.r 6.7 24 NOV 80 6.2 7.0 6.6 1 DEC 80 8.0 8.,

8.4 1 DEC 00 8.0 8.7 8.3 8 DEC 00 4.1 6.0 61 8 DEC 80 6.1 6.0 6.0 15 DEC 80 5.1 3.9 4.5 15 DEC 80 4.0 3.9 3.9 22 DEC 80 0.7 0.1 0.4 22 DEC 80

-0.9

-0.6

-0.8 29 DEC 80 2.0 1.6 1.8 29 DEC 80 1.8 1.4 1.6 5 JAN 81

-0.0 0.5 0.2 5 JAN 81

-0.9

-0.8

-0.9 12 JAN R1 0.5 0.4 0.4 12 JAN 81

-0.9

-0.5

-0.7 19 JAN 81 4.3 1.5 3.9 19 JAN 84 6.1 1.4 3.7 26 JAN R1 4.9 4.3 4.6 26 JAN 81 4.1 3.4 3.7 2 FEB 81 3.8 2.0 2.9 2 FEB 81 3.8 1.8 2.8 9 FEB 81 0.6 1.6 1.1 9 FEB 81 0.2 0.2 0.2 17 FEB 8L 10.5 3.4 9.5 17 FEB 01 8.5 7.3 7.9 23 FEB 81 8.5 8.4 8.5 23 FEB B1 8.4 8.3 8.4 HEAN 10.4 9.9 10.2 NEAN 10.1 9.7 9.9

TABLE 4-7 MEAN DISSOLVED OXYGEN VALUES (mg/f.) DURING NIGHT (IITIN) AND DAY (INTD) Ilf1NGEMEl(T SAMPLING AT THE OYSTER CREEK NUCLEAR GENERATING STATION. SEPTE!EER 1980 - FEBRUARY 1981 SURFACF B01 TON DATE INTN INTD HEAN DATE INTN INTD MEAN 2 SEP 80 4.6 5.8 5.2 2 SEP 80 4.6 6.0 5.3 8 SEP 80 5.3 5.8 5.5 8 SEP 80 5.3 5.8 5.6 15 SEP 80 5.4 5.6 5.5 15 SEP 80 5.5 5.5 G.5 22 SEP 80 5.7 5.7 5.7 22 SEP 80 5.7 57 57 29 SEP 80 6.3 6.1 6.2 29 SEP 80 6.3 6.2 6.2 6 OCT 80 71 70 7.1 6 0CT B0 7.2 7.0 7.1 13 GCT 80 78 7.8 7.8 13 DCT 80 7.8 8.0 7.9 20 OCT 80 7.2 7.2 7.2 20 DCT 80 7.2 7.1 7.2 27 DCT 80 7.7 74 76 27 GCT 80 7.7 7.5 7.6 3 NOV 80 8.3 8.4 8.4 3 HOV 80 B.4 8.4 8.4 10 NOV 00 8.7 90 8.8 10 NOV 80 8.7 8.9 88 17 NOV 80 9.4 9.3 9.4 17 NOV 80 9.4 9.3 94 24 NOV 80 10.2 9.8 10.0 24 NOV 80 10.2 9.9 10.0 1 DEC 00 9.6 96 9.6 1 DEC 80 9.6 9.6 9.6 8 DEC 00 10.4 10.1 10.3 8 DEC 80 10.5 10.1 10.3 15 TiEC 80 11.0 11 2 11.1 15 DEC 80 11.2 11.2 11 2 22 DEC 80 11.7 11.4 11.5 22 DEC 80 11.7 11.5 11.6 29 DEC 80 10.3 10.3 10.3 29 DEC 80 10.4 10.6 10 5 5 JAN 81 13.1 13.9 13.5 5 JAN 81 13.2 14.0 13.6 12 JAN 81 12.2 11.9 12.0 12 JAN 81 12.4 12.3 12.4 i

19 JAN 81 13.5 15.4 14.4 19 JAN 81 13.'

15.7 14.7 26 JAN 81 10.5 11.1 10.8 26 JAN 81 10.8 11.8 11.3 2 FER 81 10.6 11.2 10.9 2 FEB 81 11.0 11.3 11.1 9 FEB 81 10.5 10.6 10.5 9 FEB 81 10.7 10.9 10.8 17 FEB 81 9.5 9.8 9.7 17 FEB 81 9.6 10.0 9.8 23 FEB 81 8.7 8.8 8.8 23 F EB 81 8.8 8.9 8.8 NEAN 9.0 9.2 9.1 MEAN V.1 9.3 9.2 l

TABLE 4-8 MEAN SALINITY VALUES (ppt) DURING NIGHT (INTN) AND DAY (INTD) IMPINGEMENT SAMPLING AT THE OYSTER CREEK NUCLEAR GENERATING STATION, SEPTEMBER 1980 - FEBRUARY 1981 BOTTDM SURFACE i

DATE INTH INTD HEAN DATE INTN INTD HEAN 2 SEP 80 24.2 24.0 24.1 2 SEP 80 24.3 24.0 24.1 8 SEP 80 24.2 24.9 24.5 8 SEP 80 24.2 24.9 24.6 15 SEP 80 27.6 28.1 27.0 15 SEP 80 27.7 28.1 27.9 22 SEP B0 25.3 26.4 25.8 22 SEP 80 25.3 26.3 25.8 29 SEP 80 26.4 26.2 26.3 29 SEP 80 26.3 26.2 26.3 6 OCT 80 26.4 26.8 26.6 6 OCT 80 26.5 26.7 26.6 13 OCT 80 25.2 25.4 25.3 13 OCT 00 25.3 25.3 25.3 20 OCT 80 23.9 24.4 24.1 20 DCT 80 24.0 24.3 24.1 27 OCT.80 23.9 23.5 23.7 27 OCT 80 23.9 23.7 23.8 3 NOV 80 26.0 26.0 26.0 3 NOV 80 26.1 26.0 26.0 10 NOV 80 25.6 25.8 25.7 10 NOV 80 25.7 26.0 25.8 17 NOV 80 25.1 24.4 24.8 17 NOV 80 25.2 24.6 24.9 24 NOV 80 24.0 23.8 23,9 24 NOV 80 24.1 23.9 24.0 1 DEC 80 24.0 23.9 24.0 1 DEC 80 23.0 24.0 23.9 8 DEC 80 25.9 26.3 26.1 8 DEC 80 25.7 26.1 25.9 15 DEC 80 24.0 23.5 23.7 15 DEC 80 23.4 23.4 23.4 22 DEC 80 24.4 25 3 24.8 22 DEC 00 24.3 24.9 24 6 29 DEC 80 24.1 25.2 24.6 29 DEC 80 23.5 25.2 24.3' 5 JAN 81' 24.7 24.9 24.8 5 JAN 81 23.9 24.8 24.4 l

12 JAN 81 25.3 25 8 25.5 12 JAN 81 25.5 25.7 25.6 l

19 JAN 81 24.7 25.5 25.1 19 JAN 81 24.6 25.3 24.9 26 JAN 81 28.2 28.6 28,4 26 JAN 81 27.7 28.7 28.2 2 FEB 81 26.4 27.3 26.8 2 FEB 81 26.3 27.3 26 8 9 FEB 81 26.9 26.2 26.6 9 FEB 81 26.4 25.8 26.1 17 FEB 81 26.0 24.4 26.2 17 FEB 81 25.6 26.1 25.9 23 FEB 81 24.7 26 0 25.4 23 FEB 81 25.1 26.6 25.9 HEAN 25.3 25.6 25.4 HEAN 25.2 25.5 25.4

TABLE 4-9 MEDIAN pH VALUES ASSOCIATED WITH IMPINGEMENT SAMPLING AT THE O! STER CREEK NUCLEAR GENERATING STATION INTAKE, SEPTEMBER 1980 - FEBRUARY 1981 Night Day Week of Surface Bottom Surface Bottom 2 SEP 80 7.6 7.6 7.7 7.8 8 SEP 80 7.9 7.8 7.9 7.9 15 SEP 80 7.7 7.7 7.6 7.6 22 SEP 80 7.7 7.7 7.7 7.7 29 SEP 80 7.5 7.5 7.4 7.4 6 OCT 80 8.0 8.0 7.9 7.9 13 OCT 80 7.9 8.0 7.9 8.0 20 OCT 80 7.8 7.8 7.8 7.8 27 OCT 80 7.8 7.8 7.5 7.2 3 NOV 80 7.8 7.8 7.6 7.5 10 NOV 80 7.9 7.9 7.9 7.9 17 NOV 80 7.7 7.8 7.8 7.8 24 NOV 80 7.8 7.8 7.9 7.8 1 DEC 80 7.8 7.8 7.9 7.9 8 DEC 80 7.9 7.9 7.9 7.9 15 DEC 80 7.9 7.9 7.9 7.9 22 DEC 80 8.0 8.0 8.0 8.0 29 DEC 80 7.9 7.9 7.9 7.9 5 JAN 81 8.0 8.0 8.0 8.0 12 JAN 81 8.1 8.1 8.1 8.2 19 JAN 81 8.3 8.3 8.3 8.3 26 JAN 81 8.2 8.2 8.3 8.3 2 FEB 81 8.1 6.1 8.2 8.1 9 FEB 81 8.3 8.2 8.3 8.3 17 FEB 81 8.1 8.1 8.1 8.1 23 FEB 81 7.9 7.9 8.0 8.0

5.

ENTRAINMENT OF ICHTHYOPLANKTON 8i.1 BIOLOGICAL DATA A total of 168 samples were collected and examined for ichthyoplankton abun-dance from 2 September 1980 to 23 February 1981. Samples collected during Ssptember and October were also examined for ichthyoplankton viability.

Winter flounder (Pseudopleuronectes americanus) was the dominant species in the entrainir. ant samples (Table 5-1).

140 3/100 m3, ggs were the most abundant form with E

while winter flounder larvae were the a mean sample density of third most abundant form with a mean sample density of 5.7/100 m3

Together, eggs and larvae of winter flounder composed 83.9 percent of the total catch.

Sand hnce (Ammodytes americanus) larvae were the second most abundant form with a mean sample density of 15 3/100 m3 They composed 8.8 percent of the total catch.

Unidentified eggs were the fowth most abundant form collected with a mean dInsity of 2.3/100 8, constituting 1.3 percent of the total catch. Most of these eggs were unidentified due to early stage of development. They probably were sumer flounder (Paralichthys dentatus) eggs, as most of the unidentified eggs were taken at the same time as later stage eggs that could ba identified as summer flounder. Summer flounder e s were the fifth most abundant form with a mean sample density of 2.1/100 m, conprising 1.2 per-cint of the catch.

Bay anchovy ( Anchoa mitchilli) larvae and juveniles were the sixth and eighth most abundant forms with mean sample densities of 1.9 and 1.4/100 m3, respec-tively. Together they accounted for 1.9 percent of the total catch.

Eggs of the family Labridae were the seventh most abundant form. They were collected at a mean sample density of 1.8/100 m3, making up 1.0 percent of the total catch.

l Northern pipefish (Syngnathus fbscus) juveniles were the ninth most abundant form. They were collected at a mean sample density of 1.1/100 m3, consti-tuting 0.6 percent of the total catch.

The remainder of the catch was composed of 12 different forms. They were all collected at mean sample densities of <1.0/100 m3 and represented only 1.2 l

parcent of the total catch.

The early life stages of the various species appeared at different times during the study period, depending on species-specific spewning time.

l l

Larvae and juveniles of the bay anchovy, northern pipefish juveniles, and eggs and larvae of other summer spawners were taken in low densities during l

September and October (Table 5-2).

Eggs of the summer flounder, a fall spawner, were taken in moderate densities during October. Also taken in October were unidentified eggs that were probably early stage summer flounder cggs.

Ichthyoplankton densities were extremely low in November with only occasional captures of juveniles and adults. This period of low density 5-1

continued into early December.

Larvae of the sand lance, a winter spawner, first appeared in December in low densities but dominated the ichthyoplank-ton, accounting for 93 percent of all entrained ichthyoplankton.

Densities increased in January, then dropped slightly in February.

The first indication of winter flounder spawning was low densities of eggs collected in January.

Egg densities were high in February, especially in night discharge collections.

However, many of these eggs were unfertilized, ovarian eggs forced from ripe females impinged on the screens. Winter flounder larvae were first collected at moderate densities in February.

In comparing day and night differences in densities, only data from weeks when 24-hour studies occurred were examined (Table 5-3).

In September and October, no regular day-night differences were apparent due to the low abun-dances of the organisms involved. From December through February, sand lance larvae showed no difference between day and night densities.

This was also the case for winter flounder larvae in February.

Only winter flounder eggs in February showed an obvious day-night difference, with night discharge sam-ples having a much higher density. This was due to the higher impingement rate for winter flounder at night, since most of these eggs were unfertilized and apparently forced from impinged ripe females.

Viability determinations for bay anchovy, northern piperish, and Gobildae are reported in Table 5-4.

Insufficient specimens of any taxon were collected for analysis of entrainment effects.

However, a higher proportion of all organisms were alive or stunned at the intake than at the discharge.

Estimates of total numbers entrained during the September 1980 - February 1981 period were made for key and abundant species and far Lotal ichthyoplankton 6

(Table 5-5). Winter flounder eggs had the highest estimate with 1,454.54 x 10 entrained. However, most of these were unfertilized eggs extruded from impinged Sgnd lance and winter flounder larvae had the next highest estigates, females.

and and 57.54 x 10, respectively.

A total of 1,820.39 x 10 150.24 x 10 ichthyoplankton organisms were entrained during the siz-month period.

5.2 WATER QUALITY DATA ASSOCIATED WITH ENTRAINMENT SAMPLING Mean water Lemperature " ' 's at the intake ranged from -0.3 C on 23 December 1980 to 30.2 C on 2 Septemoe.- 1980 (Table 5-6).

Water temperature values differed little between surface and bottom, and day and night.

Mean water temperature values at the discharge ranged from 6.1 C cn 24 Novem-ber 1980 to 39.2 C on 2 September 1980.

The low temperature in November occurred during a period when the plant was shut down and did not correspond to the date of the lowest intake temperature.

The average delta-T between intake and discharge was -9 C far both day and night.

Mean dissolved oxygen values ranged from 4.6 to 11.7 mg/ liter at the intake, and froc 4.7 to 13.3 mg/ liter at the discharge (Table 5-7).

There was little difference between surface and bottom values at the intake and no consistent differences between day and night values, or intake and discharge values.

Mean salinity values ranged from 23.0 to 28.8 ppt during the entrainment study period (Table 5-8).

There were no consistent differences between surface and bottom, day and night, or intake and discharge.

5-2

I M;dian pH values ranged from 7.5 to 8.3 (Table 5-9).

Differences between curface and bottom, and day and night, were minor and inconsistent. However, the discharge values were often slightly lower than the intake values.

Total chlorine was measured at the discharge on each entrainment sampling dIte. Oslorine concentrations were always found to be <0.01 ppm.

1 O

I i

5-3

TABLE 5-1 MEAN SAMPLE DENSITY (No./100 m3), PERCENT COMPOSITION, AND CUMULATIVE PERCENT OF ICHTHYOPLANKTON COLLECTED AT THE INTAKE AND DISCHARGE OF THE OYSTER CREEK NUCLEAR GENERATING STATION, SEPTEMBBR 1980 - FEBRUARY 1981 SPP. NAME NUMBER CUMU. %

PSEUD 0PLEURONEC AMER EGG 140.342 80.608 80.608 AMMODYTES AHERICANUS LAR 15.299 8.787 89.395 PSEUD 0PLEURONEC ANER LAR 5.746 3.300 92.696 UNIDENTIFIED EGG 2.314 1.329 94.025 PARALICHTHYS DENTATU EGG 2 142 1.230 95.255 ANCHOA MITCHILLI LAR 1.864 1 071 96.326 LABRIDAE EGG 1 819 1.045 97.371 ANCHOA MITCHILLI JUV 1 425 0.819 98.189 SYNGHATHUS FUSCUS JUV 1 108 0.637 98.826 GOBIIDAE LAR 0.599 0.344 99.170 ANGUILLA ROSTRATA GLASS 0 275 0.158 99 328 GOBIOSONA BOSCI JUV 0 246 0 142 99.470 PARALICHTHYS DENTATU LAR 0.205 v.118 99.588 GOBIOSONA BOSCI ADULT 0.126 0.072 99.460 MYOX0CEPHALUS AENAEU LAR 0 116 0.066 99.727 HIPPOCAMPUS ERECTUS JUV 0 107 0.061 99.788 APELTES QUADRACUS ADULT 0.098 0.056 99.844 BREV00RTIA TYRANNUS LAR 0.098 0.036 -

99.900 ATHERINIDAE LAR 0.064 0.037 99.937 FUNDULUS DIAPHANUS ADULT 0.058 0.034 99.971 SYNGNATHUS FUSCUS ADULT 0.051 0.029 100.000 l

i

TABLE 5-2 MONTHLY EAN SAMPLE DENSITIES ('No./100 m3) AND PERCENT COMPOSITION OF ICHTHY 0 PLANKTON COLLECTED AT THE OYSTER CREEK NUCLEAR GENERATING STATION, SEPTEMBER 1980 - FEBRUARY 1981 DYSTERCR GEAR-36 BONG SEP 80 STATION DSNT DSDA INNT INDA l

SPECIES NUMBER PCT NUHDER PCT NUMBER PCT NUMBER PCT NUMBER FCT INDIVS COMP INDIVS COMP INDIVS COMP INDIVS COMP TOTAL CONP ANCHOA MITCHILLI LAR 6.39 21.03 15.65 23.53 6.07 32.20 10.63 66.93 8.08 27 62 LAI:RIDAE EGG 8.99 29.59 44 05 66.24 0.00 0.00 0.00 0.00 8.39 28.69 ANCHOA MITCHILLI JUV 4.74 15.60 0.00 0.00 10.14 47.62 0.00 0.00 5.78 19.70 SYNGNATHUS FUSCUS Jtr>

4.90 16.14 3.40 5.11 2.17 10.20 5.25 33.07 3.71 12.69 GOBIIDAE LAR 4.79 15.78 3.40 5.11 1.34 6.31 0.00 0.00 2.76 9.45 BREV00RTIA TYRAHNUC L AR 0.56 1.86 0.00 0.00 0.00 0.00 0.00 0.00 0.22 0.75 ATHERINIDAE LAR 0.00 0.00 0.00 0.00 0.76 3.59 0.00 0.00 0.30 1.02

..---=

STATION TOTAL AND DA1E TOTAL 30.36 66.50 21.29 15.00 29.24

TABLE 5-2 (Cont.)

0YSTERCR GEAR-36 BONG OCT 00 STATION DSNT bSDA INNT INDA SPECIES NUMBER PCT NUMBER PCT liUMBER PCI NUMBER PCT NUMBCR PCT INDIVS COMP 1NDIVS COMP INDIVS COMP INDIUS COMP TOTAL COMP UNIDCdT1FIED EGG 11.33 40.22 0.00 0.00 17.72 73.69 0.00 0.00 10.89 40.84 PAR!.LICHTHYS DENTATU EGG 9.49 33.69 26.33 100.00 2.12 8.80 27.75 91.21 11.11 41.66 ANCHOA HITCHILLI LAR 0.82 2.90 0.00 0.00 0.75 3.12 0.00 0.00 0.59 2.20 ANCH0A HITCHILLI JUV 0.00 0.00 0.00 0.00 1.48 6.14 2.67 8.79 0.89 3 33 SYNGNATHUS FUSCUS JUV 2.22 7.87 0.00 0.00 1.93 8.25 0.0C 0.00 1.58 5.90 PARALICHTHYS DENTA1U LAR 2.04 10.09 0.00 0.00 0.00 0.00 0.00 0.00 1 07 3.99 HIPPOCAMPUS ERECTUS JUV 1.48 5.24 0.00' O.00 0.00 0.00 0.00 0.00 0.55 2.07

------=. --

STATION TOTAL AND DATE TOTAL 20.18 26 33 24.04 30.43 26.67

0 0

V O

N P-677 TM-279 CO-PC-891 521

- R 075 3

- EL-783 9

- BA-MT -

100 2

- UO-

- NT -

P-000

- TN-000

- CO-PC-000 A-D-

N RS-000 0

I - EV-000 0

- BI -

- MD-000 0

- UN-NI -

P 640 G

- TM 270 N

- CO O

- PC 900 B

T -

72 6

N-3 N RS 140 5

I - EV 130 4

)

R

- DI -

A

- ND-510 6

E

- UN-t G

- NI -

n o

C

(

P-000

. TM-000

- CO-2

- PC-000 A-D-

5 S

RS-000 0

D EV 000 0

E

- BI L

- MD 000 0

B

- UN-A

- NI -

T P

046

- TN 081

- CO-

- PC 045 T -

54 N.RS 020 3

S 075 3

D EV_

BI -

- MD.

011 2

. UN NI R

CR E

T T

S

=

L Y

TU L

O LD A

VUA D1 UD N0 JAS k1 U

IIC L

N

- S CCS O

. E SSUh I

. I OOF b T

- C BP h

A

- E S

T

- P AAU N S

- S MNH O OOT k SSA h OOH k IIG hE BBN ST OOY A

GGS D

tllli)l

TABLE 5-2 (Cont.)

OYSTERCR GEAR-36B0HG DEC 00 STATION DSNT DSDA INNi INDA SPECIES NUMBER PCT NUMBER PCI NUMBER PCT NUMBER PCT NUMBER PCT INDIVS COMP INDIVS COMP INDIUS COMP INDIVS COMP TOTAL COMP

- ---- ---==

= - - -

- - - _ - - - - = - - - - - - - -

=-----------------------

AMMODYTES AMERICANUS LAR 17.26 90.89 25.00 100.00 12.57 00.09 13.13 100.00 16.10 92.93 APELIES 00ADRACUS ADULT 0.76 4.00 0.00 0.00 0.87 6 10 0.00 0.00 0.50 3.36 BREV00RTIA TYRANNUS LAR 0.00 0.00 0.00 0.00 0.83 5.82 0.00 0.00 0.30 1.71 FUNDULUS DIAPHANUS ADULT 0.97 5.11 0.00 0.00 0.00 0 00 0.00 0.00 0.35 2 00

===---------------------------- ---------------------

STATION TOTAL AND DATE TOTAL 18.99 25.00 14.27 13.13 17 33

TABLE 5-2 (cont.)

OYSTERCR GEAR-36 BONG JAN 81 STATION DSNT DSDA INNI INDA SPECIES NUMBER PCT NUMBER PCT NUNDER FCT NUMBER FCT NUMBER FCT l

INDIVS COMP INDIVS COMP INDIVS C0HP INDIVS C0HP TOTAL COMP PSEUD 0PLEURONEC AMER EGO 2.06 4.36 0.00 0.00 0.00 0.00 0 00 0.00 1 04 1.97 ANNODY1ES AMERICANUS LAR 62.80 95.64 55.92 100.0' 33.12 100.00 53.95 100.00 51.85 98 03 bikkibh ibkkbbkb DATE TOTAL 65.66 55.92 33.12 53.95 52.09 l

TABLE 5-2 (Cont.)

t

(

l l

OYSTERCR GEAR-36 BONG FEB 81 STATION DSNT DSDA INNT INDA SPECIES NUMBER PCT NUNDER PCT NUMBER PCT NUMBER PCT NUNDER PCT INDIVS COMP INDIVS COMP INDIVS COMP INDIUS COMP TOTAL COMP

=-------------------------

PSEUDGPLEURONEC AMER EGG 2579.25 97.67 158.93 75.77 185 43 63.52 130.15 53 41 969.75 92.00 AHMODY1ES AMERICANUS LAR 22.43 0 85 18.30 8.72 58.50 20.07 56.78 23.30 39.51 3.75 PSEUD 0PLEURONEC AMER LAR 36.36 1.30 32.53 15.50 39.83 13.64 53.55 21 93 39.74 3.77 UNIDENTIFIED EGG 0.00 0.00 0.00 0.00 2.84 0.97 3.20 1 31 1.48 0.14 ANGUILLA ROSTRATA OLASS 2.88 0 11 0.00 0.00 2.84 0.97 0.00 0.00 1.90 0.18 MYOX0CEPHALUS AENAEU LAR 0.00 0.00 0.00 0.00 2.40 0.82 0.00 0.00 0.00 0.00 STATION TOTAL AND DATE TOTAL 2640.91 209.80 291.90 243.68 1053.18 a

e

TABLE 5-3 MEAN SAMPLE DENSITIES (No./100 m3) AND PERCENT COMPOSITION OF ICIITilYOPLANKTON COLLECTED DURING 211-HOUR STUDIES AT THE OYSTER CREEK NUCLEAR GENERATING STATION, SEPTEMBER 1980 - FEBRUARY 1981 l

l OYSTERCR GEAR-36 BONG 22 SEP 00 STATION DSNT DSDA INNT INDA SPECIES NUMBER PCT NUMaiER PCT NUMBER PCT NUH0ER PCT NUMBER PCT INDIVS COMP INDIVS COMP INDIVS COMP INDIVS COMP TOTAL COMP ANCHOA HITCillLLI LAR.

8.32 20.57 15.65 23.53 7.02 45.86 10.63 66.93 9.05 29.69 LABRIDAE EGG 20.97 51.85 44.05 66.24 0.00 0.00 0.00 0.00 15.10 45.49 ANCHOA HITCillLLI JUV 1.32 3.26 0.00 0.00 1.87 12.20 0.00 0.00 0.96 2.88 SYHGHATHUS FUSC'JS JUV 6.07 15.00 3.40 5 11 3.28 21.46 5.25 33.07 4.54 13.66 00BIIDAE LAR 2 45 6.06 3.40 5.11 3.13 20.48 0.00 0.00 2.36 7.07 BREV00RTIA TYRANNUS LAR 1.32 3.26 0.00 0.00 0.00 0.00 0.00 0.00 0.40 1.19

- - ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~

~ ~ - - ~ ~ ~ - - - ~ ~ ~ ~ ~ ~ - - - ~ ~ ~ ~ ~ ~ ~ ~ - ~ ~

iiii5s i5iE Is5---~~---~~-----

S DATE TOTAL 40.43 66.50 15.30 15.88 33.20

i TABLE 5-3 (cont.)

OYSTERCR GEAR-36B0HG 20 OCT 00 STATION DSNT DSDA INNT INDA SPECIES NUMBER PCT NUMBER PCT NUNDER PCT NUNCER PCT NUMBER PCT INDIVS COMP INDIVS COMP INDIVS COMP INDIVS COMP TOTAL Cnge UNIDENTIFIED EGG 4.30 16.83 0.00 0.00 16.38 05.48 0.00 0.00 6.21 25.06 PARALICHTHYS DENTATU EGG 13.93 54.53 26.33 100.00 0.00 0 00 27.75 91.21 14 99 60.55 ANCHOA MITCHILLI LAR 1.63 6.39 0.00 0.00 1.50 7.83 0.00 0.00 0.94 3.00 ANCHOA MITCHILLI JUV 0.00 0.00 0.00 0.00 1.28 6.70 2 67 8.79 0.92 3.71 PARALICHTHYS DENTATU LAR 5.60 22.24 0.00 0.00 0.00 0.00 0.00 0.00 1.70 6.88 STATIONTbTALAND DATE TOTAL 25.55 26.33 19.17 30.43 24.77 w

l I

]

0

~

0

~

V O

~

N

~

4 P~

0-

0. -

2 TN~

CO-PC-0-

0 -

1 -

R 1 -

1

3. -

3 EL-DA-NT -

1 -

2 UO-

- NT-P-

0-

0. -

- TM-

- CO-

- PC-0-

A RS-0-

0 D

EU-

0. -

0 N

BI -

I - MD-0 0

- UN-

- HI -

P-0-

0. -

- TM-G

- CO-H

- PC-0-

O 0-D 1 -

6 T -

3 N

RS-7-

7

)

N EV-

6. -

6 R

I - BI -

t A

- MD-2-

2 n

E

- UN-o G

- NI -

C

(

P-0-

TM-

0. -

3 CO-k-C-0-

5 A-D-

S-0-

0 E

0. -

0 S-V-

L D-I -

B D-0-

0 A

N_

T I

P_

0-M_

0. -

O_

C 0-0-

T -

1 -

N-S 5-s

5. -

s.

D-U I -

D-2-

2 N-I -

R C

R E

T S

Y O

T-t L-n UY Dg Ai I

H

- Ca D

Sr OO I

B TA T

A" S

N0 O1 S'

- Oa I

ls, B

O-G

i l

l l

l TABLE 5-3 (cont.)

l l

GEAR-36 BONG 23 DEC 80 l

OYSTERCR STATION DSNT DSDA INNT INDA

_=.----- __ ____

_ _ _ = _ _ -. _ _

SPECIES NUMBER PCT NUMBER PCT NUMBER PCT NUMBER PCT NUMBER PCT INDIVS COMP INDIVS COMP INDIVS COMP INDIVS COMP TOTAL COMP

.=_

= _ _ - _ - - -. - _ = - _ -.

. =-=-

AMMODYTES AMERICANUS LAR 23.30 92.46 25.00 100.00 14.73 100.00 13.13 100.00 19.04 97.57 APELTES QUADRACUS ADULT 1.90 7.54 0.00 0.00 0.00 0.00 0.00 0.00 0.47 2.43

_ =----------------

STATION TOTAL AND DATE TOTAL 25.20 25.00 14.73 13.13 19.51 l

TABLE 5-3 (cont.)

0YSTERCR GEAR-36 BONG 20 JAN 81 STAT 10N DSNT DSDA INNT INDA SPECIES NUNDER PCT NUMBER PCT NUMBER PCT NUMBER PCT NUMBER PCT INDIVS COMP INDIVS COMP INDIVS COMP INDIVS COMP TOTAL COMP

- - - - - - - - - - - - - - - - - =

PSEUD 0PLEURONEC AMER EGG 2.80 2.86 0.00 0.00 0.00 0.00 0.00 0.00 0.70 1.10 AHMODYlES AMERICANUS LAR 95.05 97.14 55.92 100.00 47.73 100.00 53.95 100.00 63.16 98.90 SiilbhkbiktkhD DATE TOTAL 97.85 55.92 47.73 53.95 63 86 i

l 4

l e

TABIE 5-3 (cont.)

OYSTERCR GEAR-36 BONG 18 FEB 01 STATION DSNT DSDA INNT INDA SPECIES NUMBER PCT NUMBER PCT NUMBER PCT NUMBER PCT NUMBER PCT INDIVS COMP INDIVS COMP INDIVS COMP INDIVS COMP TOTAL COMP

. _ _ _ _ _ _ _ _ _ - =

PSEUD 0PLEURONEC AMER EGG 5062.15 98.83 158.98 75.77 248.82 63.71 130.15 53.41 1400.03 93.87 AHMJDYTES AMERICANUS LAR 14.57 0.28 18.30 8.72 79.10 20.25 56.78 23.30 42.19 2.83 PSEUD 0PLEURONEC AMER LAR 39.43 0.77 32.53 15.50 53.20 13.62 53.55 21.98 44.68 3.00 UNIDENTIFIED EGG 0.00 0.00 0.00 0.00 2.33 0.60 3.20 1.31 1.38 0.09 ANGUILLA ROSTRATA GLASS 5.75 0.11 0.00 0.00 2.33 0 60 0.00 0.00 2.02 0.14 MY0X0CEPHALUS AENAEU LAR 0.00 0.00 0.00 0.00 4.80 1.2a 0.00 0.00 1.20 0.08 STATION TOTAL AND DATE TOTAL 5121.90 209.80 390.58 243.68 1491.49

I TABLE 5-4 NUMBER OF LIVE (L), STUNNED (S), AND DEAD (D)

SPECIMENS OF FOUR TAXA COLLECTED IN ENTRAINMENT SAMPLES AT THE OYSTER CREEK NUCLEAR GENERATING STATION, SEPTEMBER - OCTOBER 1930 Intake Discharge Taxa Month 1

S D

L S

D Bay anchovy larvae SEP O

1 11 0

0 15 OCT 0

1 0

0 0

1 Total 0

2 11 0

0 16 Bay anchovy juveniles SEP 9

1 1

0 1

5 OCT 1

2 0

0 0

0 Total 10 3

1 0

1 5

Northern pipefish juveniles SEP 2

0 1

1 0

1 OCT 1

0 0

0 1

0 Total 3

0 1

1 1

Gobiidae larvae SEP O

1 0

1 1

3 l

OCT 0

0 0

0 Total 0

1 0

1 1

3 1

l

l I

TABLE 5-5 ESTIMATED NUMBERS OF KEY AND ABUNDANI ICHTHYOPLANKTON l

ENTRAINED AT THE OYSTER CREEK NUCLEAR GENERATING STATION, SEPTEMBER 1980 - FEBRUARY 1981 Estimated Number 80 Percent Confidence 6

6 Species and Life Stage Entrained (x 10 )

Level (x 10 )

Anchoa mitchilli larvae 15.73 7.30 Anchoa mitchilli juveniles 3.77 3.86 Syngnathus fiacus juveniles 6.41 4.43 Ammodytes americanus larvae 150.24 44.87 Paralichthys dentatus eggs 51.54 35.20 Pseudopleuronectes americanus eggs 1,454.54 1,886.67 Pseudopleuronectes americanus larvae 57.54 22.65 unidentified eggs 9.78 11.39 Total eggs 1,550.14 1,887.43 Total larvae 239.64 52.41 Total juveniles and adults 30.61 10.03 Total entrainment 1,820.39 1,879.48 l

I

l TABLE 5-6 MEAN WATER TEMPERATURE MEASUREMINTS (C) ASSOCIATED WITH ENTRAINMENT SAMPLING AT THE OYSTER CREEK NUCLEAR GENERATING STATION, SEPTEMBER 1980 - FEBRUARY 1981 Intake Discharge Night Day Surface Date Surface Bottom Surface Bottom Night Day 2 SEP 80 30.2 30.2 39.2 8 SEP 80 25.7 25.8 37.1 15 SEP 80 23.0 23.0 34.5 22 SEP 80 25.0 25.1 25.0 24 SEP 80 21.9 21.9 23.1 22.6 31.7 31.0 25 SEP 80 21.6 21.6 31.9 29 SEP 80 18.4 18.4 29.0 28.2 6 0CT 80 17.3 17.2 13 OCT 80 14.4 14.4 25.3 20 OCT 80 16.9 16.9 28.2 21 OCT 80 17.8 17.8 29.0 22 OCT 80 17.8 17.8 16.5 16.5 29.0 27.8 27 OCT 80 11.2 11.2 21.0 l

24.9 3 NOV 80 11.0 11.0 17 NOV 80 6.8 6.8 17.6 6.1 24 NOV 80 6.1 6.0 25 NOV 80 7.2 7.1 7.2 1 DEC 80 8.0 8.0 17.8 15 DEC 80 3.8 3.8 15.0 i

23 DEC 80

-0.4

-0.3

-0.5

-0.5 11.0 10.5 l

29 DEC 80 2.5 1.9 12.0 13 JAN 81 9.0 20 JAN 81 0.9 0.6 12.4 21 JAN 81 1.2 0.9 11.1 17.8 26 JAN 81 6.2 5.0 9 FEB 81 2.0 1.0 15.9 18 FEB 81 10.1 9.9 10.4 9.3 18.5 20.9 19 FEB 81 11.1 10.7 21.1 23 FEB 81 8.8 8.6 18.0 MEAN 12.3 12.1 9.7 9.3 21.2 18.1 Note: dash (--) indicates sampling not done.

TABLE 5-7 MEAN DISSOLVED OX .N MEASUREMENTS (mg/1) ASSOCIATED WITH ENTRAINMENT SAMPLING AT THE OYSTER CREEK NUCLEAR GENERATING STATION, SEPTEMBER 1980 - FEBRUARY 1981 Intake Discharge Night Day Surface Date Surface Bottom Surface Bottom Night Day 4.7 2 SEP 80 4.6 D.7 5.7 8 SEP 80 5.8 5.7 5.8 15 SEP 80 6.6 6.5 22 SEP 80 6.3 6.3 6.1 24 SEP 80 5.1 5.1 5.2 5.3 5.9 5.7 6.0 25 SEP 80 4.9 5.1 29 SEP 80 6.5 6.5 6.1 7.5 6 OCT 80 7.3 7.4 7.7 13 OCT 80 8.0 8.0 7.3 20 OCT 80 7.5 7.5 7.1 21 OCT 80 7.2 7.1 22 OCT 80 6.9 6.7 7.4 7.3 6.9 7.4 27 OCT 80 7.8 7.8 8.0 7.9 3 NOV 80 8.5 8.2 9.7 17 NOV 80 9.5 9.5 24 NOV 80 10.4 10.4 10.6 9.4 9.9 9.9 25 NOV 80 9.2 1 DEC 80 9.6 9.7 9.9 15 DEC 80 11.6 11.7 23 ';;u 80 11.0 11.3 11.3 11.5 11.8 12 3 11.4 29 DEC 80 9.9 10.2 12.6 13 JAN 81 13.3 20 JAN 81 13.7 21 JAN 81 11.8 26 JAN 81 9.8 10.0 9 FEB 81 10.4 10.6 10.6 18 FEB 81 9.3 9.3 9.8 10.2 10.0 10.2 19 FEB 81 8.8 8.6 9.6 8.5 23 FEB 81 8.8 8.9 MEAN 8.3 8.3 8.7 8.8 8.9 9.8 Note: dash (--) indicates sampling not done.

TABLE 5-8 MEAN SALINITY MEASUREMENTS (ppt) ASSOCIATED WITH ENTRAINMENT SAMPLING AT THE OYSTER CREEK NUCLEAR GENERATING STATION, SEPTEMBER 1980 - FEBRUARY 1981 Intake Discharge Night Day Surface Date Surface Bottom Surface Bottom Night Day 2 SEP 80 23 0 23.2 26.9 8 SEP 80 24.2 24.2 28.1 l

15 SEP 80 27.0 26.8 25.2 26.8 22 SEP 80 23.1 23.0 24 SEP 80 28.8 28.5 29.1 28.8 27.5 27.2 25 SEP 80 27.8 27.8 27.0 29 SEP 80 26.6 26.3 27.8 27.9 l

6 OCT 80 26.4 26.4 13 OCT 80 26.0 26.1 27.0 20 OCT 80 23.5 23.8 26.8 21 OCT 80 24.3 24.2 28.5 22 OCT 80 24.8 24.8 24.1 24.2 27.5 26.8 27 OCT 80 24.0 24.0 28.0 3 NOV 80 26.5 26.5 26.9 17 NOV 80 26.6 26.6 25.2 24.6 24 NOV 80 24.2 24.3 25 NOV 80 24.2 24.2 25.2 24.1 1 DEC 80 23.8 23.8 15 DEC 80 24.2 23.8 23.3 23 DEC 80 25.9 25.7 26.1 25.8 24.5 25.3 29 DEC 80 24.9 24.5 25.5 24.0 13 JAN 81 25.6 20 JAN 81 25.6 25.6 27.3 21 JAN 81 27.1 27.0 26 JAN 81 28.4 28.4 24.7 26.0 9 FEB 81 27.0 2b.5 18 FEB 81 26.1 26.0 26.3 26.2 26.4 25.0 24.6 19 FEB 81 26.0 25.5 23 FEB 81 24.5 24.5 25.2 MEAN 25.5 25.4 26.1 26.0 26.0 26.1 l

l Note: dash (--) indicates sampling not done.

TABLE 5-9 MEDIAN pH MEASUREMENTS ASSOCIATED WITH ENTRAINMENT SAMPLING AT THE OYSTER CREEK NUCLEAR GENERATING STATION, SEPTEMBER 1980 - FEBRUARY 1981 Intake Discharge Night Day Surface Date Surface Bottom Surface Bottom Night Day 7.5 2 SEP 80 7.6 7.6 8.0 8 SEP 80 7.9 7.9 7.8 15 SEP 80 7.7 7.5 22 SEP 80 7.6 7.6 24 3::P 80 7.8 7.8 7.8 7.8 7.8 7.5 7.7 29 SEP 80 7.6 7.7 7.7 6 0CT 80 8.0 8.0 7.9 13 OCT 80 8.0 8.0 7.8 20 OCT 80 7.9 7.9 21 OCT 80 7.8 7.8 7.8 7.8 7.8 7.9 7.7 27 OCT 80 7.8 7.8 8.0 3 NOV 80 7.9 7.9 7.7 17 NOV 80 7.9 7.9 24 NOV 80 7.9 7.9 7.9 8.0 7.6 7.6 7.9 1 DEC 80 7.9 8.0 7.8 15 DEC 80 7.9 8.0 23 DEC 80 8.0 8.0 8.0 8.0 8.0 7.9 7.6 29 DEC 80 7.9 7.9 7.8 13 JAN 81 20 JAN 81 8.3 8.3 8.3 8.3 8.2 8.2 8.2 26 JAN 81 8.2 8.2 9 FEB 81 8.2 8.2 8.0 18 FEB 81 8.1 8.1 8.1 8.1 7.9 8.0 7.9 23 FEB 81 8.0 8.0 Note: dash (--) indicates sampling not done.

6.

MACR 0 INVERTEBRATE ENTRAINMENT In order to maintain continuity with previous studies, the condenser intake and discharge samples were each analyzed in a separate manner; the discharge samples were identified to a more detailed taxonomic level than those col-Iccted at the intake.

This was done because previous studies by Ichthyological Associates showed the discharge samples to be more homogeneous and replicable than those from the intake. Because of the greater detail afforded them, discharge samples are emphasized in the presentation of results.

The taxa collected at the intake are presented in Table 6-1.

Because organ-ism identification is less detailed at this station, fewer taxa appear.

Mysids account for >66 percent of the catch and.amphipods compose slightly

>9 percent of the organisms collected. Caprellids, ostracods, cumaceans, hydromedusae, and pycnogonids cumulatively account for -20 percent of the catch.

The remaining taxa each account for <1 percent of the intake catch.

In the discharge samples during the period September 1980 - February 1981, the most abundant taxa overall was Neomysis americana, totaling >58 percent of the catch (Table 6-2). The amphipod Jassa falcata was second in abundance, composing 11 percent of the discharge catch.

Ostracods and the amphipod, Corophium sp., ranked third anc fourth respectively, each totaling ~4 percent of the catch at the discharge.

These organisms cumulatively account for

>78 percent of the total taxa collected.

Those organisms less numerous, yet still within the top 95 percent of the catch, include caprellids, certain amphipods, the mysid Mysidopsis bigelowi, cumaceans, pycnogonids, and the hydromedusae Aequorea.

The remaining taxa cach account for <0.5 percent of the catch.

Neomysis americana, the most abundant taxon encountered at the discharge, is one of the four macroinvertebrates that have been defined as key species by the Nuclear Regulatory Commission.

The other three species so designated are Corophium tuberculatum, Callinectes sp. megalopae, and Crangon septemspinosa.

The majority of Corophium were identified only to the generic level, so sev-eral species, including C. tuberculatum, were grouped as undetermined Corophium.

Of those Corophium identified to a species level, C. tuberculatum occurred least frequently, accounting for only 0.006 percent of the catch.

Callinectes sp. megalopae, a seasonal form, occurred during two of the six months sampled, accounting for 0.09 percent of the catch.

Crangon septeaspinosa were present in both zoeal and undetermined (juvenile to adult) life stages. Zoeae were relatively rare and accounted for 0.23 percent of the catch.

Adult and juve-nile C. septemspinosa occurred in slightly higher densities than the zoeae, comprising -0.26 percent of the organisms in the discharge sample (Table 6-2).

Macrozooplankton species composition and abundance varied considerably during the period September 1980 - February 1981. Based en the monthly means of all discharge samples, abundance of macroinvertebrates varied from a maximum of

>18,200 organisms /100 m3 in September to a minimum of ~3,300 organisms /100 m3 in December (Table 6-3).

6-1

In September, the dominant organism in the discharge samples was N_. americana, accounting for nearly 69 percent of the organisms ccliected in the discharge.

September was the peak month for N. americana when ~12,500/100 m3 were col-lected.

Ostracods were the second most aburdant taxon, with nearly 7 per-cent of the catch, and caprellids were third with ~5 percent (Table 6-2).

In October the same three taxa were the dominant forms collected in discharge samples. Neomysis americana accounted for nearly 66 percent of the catch in November.

Caprellids were second in abundance (7 percent), while amphipods of the genus Corophium were the third most numerous, accounting for ~7 percent of the catch. The relative abundance of N_. americana declined in December when it accounted for only 37 percent of the catch.

The amphipod, J. falcata, also accounted for 37 percent of the catch for this month, while C(rophiu:.:

sp. composed ~11 percent.

Jassa falcata was the dominant organism in January, accounting for nearly 54 percent of the catch.

Neomysis americana ranked second in abundance with ~16 percent of the catch, just a slight margin over Corophium sp., which composed nearly 16 percent.

Jassa falcata was again the most abundant organism in February (34 percent) but N_. americana was a close second with 33 percent of the catch. The amphipod, Gammarus sp. ranked third, accounting for 16 percent. The taxa collected per month at the intake are presented in Table 6-4.

During the six-nonth sampling period, most forms were generally more abundant in night collections as compared to day collections.

Only ir January did the total mean density of organisms from the day collections exceel those from the night collections.

The majority of forms more abundant during *.he day were certain amphipods, several species of which occurred in very high densities (Table 6-3). When present at the OCNGS, the arrowworm, Sagitta sp., appeared in highest densities during the day for most collections.

Occasionally, less numerous organisms such as Hirudinia, the hydromedusae Aequorea_ sp., arJ polychaetes were collected in higher densities durin;; the day.

Total numbers entrained during the September 1980 - February 1981 period were estimated with confidence limits for key and abundant forme of moroinverte-The mys form, had the highest 26,512.31x10gdN_. americana,akey9,701.08 x J_. falcata was second brates (Table 6-5).

entrained. Th estimate with entrained. Entrainmengesti-in abundance with an estimated mates for the remaining key species are:

C. tuberculatum (7.85 x 10 ),

6 C.septemspicosazoeae(174.71x10),C.septemspinosaagultsandjuveniles The estimated (196.50 x 10 ), and Callinectes sp. megalopae (38.6554,113.84x10g10).

Water quality data total number of entrained organisms is associated with macrozooplankton entrainment is discussed in Section 5.2.

6-2

TABLE 6-1 MEAN SAMPLE DENSITY (No./100 m3), PERCENT COMPOSITION, AND CUMULATIVE PERCENT OF MACR 0200 PLANKTON COLLECTED AT THE INTAKE OF THE OYSTER CREEK NUCLEAR GENERATING STATION, SEPTEMBER 1980 - FEBRUARY 1981 SPP. HAME NUMBER CUMU. %

FAMILY MYSIDAE 4439.471 66.807 66.807 ORDER AMPHIPODA 607.208 9.138 75.945 SUB' ORDER CAPRELLIDEA 572.588 8.617 84.561 SUBCLASS OSTRACODA 325.326 4.896 89.457 ORDER CUMACEA 231.849 3.489 92.946 HYDROMEDUSAE 95.746 1.441 94.387 CLASS PYCN000NIDA 79.633 1.198 95.585 MNEMIOPSIS LEIDYI 64.004 0.963 96.548 CLASS POLYCHAETA 33.980 0.511 97.060 FAMILY XANTHIDAE ZOEA 32.933 0.496 97.555 CRANGON SEPTEMSPING ZOEA 30.318 0.456 98.012 CRANGON SEPTEMSPINOSA 27.268 0.410 98.422 SAGITTA SP 25.009 0.376 98.798 ORDER ISOPODA 22.702 0.342 99.140 HIRUDINEA 11.300 0.170 99.310 CALLINECTES SP MEGALOP 10.917 0.164 99.474 CLASS POLYCHAETA LAR 6.063 0.091 99.565 NEOMYSIS AMERICANA 5.199 0.078 99.644 CLASS GASTROPODA 3.665 0.055 99.699 PLEUROBRACHIA PILEUS 3.059 0.046 99.745 PHYLUM CTENOPHORA 2.882 0.043 99.788 HIPPOLYTE SP 20EA 2.650 0.040 99.828 SECTION BRACHYURA MEGALP 2.478 0.037 99.865 PALAEMONETES VULGARIS 2.105 0.032 99.897 SUBORDER AEOLIDACEA 1.165 0.018 99.915 FAMILY CYMOTHOIDAE 0.870 0.013 99.928 LEPTOSYNAPTA SP 0.865 0.013 99.941 CALLINECTES SAPIDUS JUV 0.746 0.011 99.952 PALAEMONETES SP ZOEA 0.734 0.011 99.963 INVERTEBRATE FRAGMENTS 0.629 0.009 99.972 UPOGEBIA AFFINIS ZOEA 0.562 0.008 99.981 ANNELIDA 0.394 0.006 99.987 l

ORDER ACTINIARIA 0.232 0.003 99.990 l

PAGURUS SP ZOEA 0.232 0.003 99.994 l

PHYLUM NEMERTEA 0.170 0.003 99.996 BER0E OVATA 0.132 0.002 99.998 PALAEMONETES SP 0.110 0.002 100.000 1

l

TABLE 6-2 MEAN SAMPLE DENSITY (Ko./100 m3), PERCENT COMPOSITION, AND CUMULATIVE PERCENT OF MACR 0 ZOOPLANKTON COLLECTED AT THE DISCHARGE OF THE OYSTER CREEK NUCLEAR GENERATING STATION, SEPTEMBER 1980 - FEBRUARY 1981 SPP. HAME NUMBER CUMU. %

NEOMYSIS AMERICANA 4822.774 G8.060 58.060 JASSA FALCATA 922.961 11.111 47.172 SUBCLASS OSTRACODA 408 749 4.921 74.092 COROPHIUM SP 366.142 4 408 78.500 SUBORDER CAPRELLIuEA 328.475 3.954 82.45$

AMPELISCA SP 235.960 2 841 85.295 MYSIDOPSIS BIGELOWI 193.499 2 329 87.625 GAMMARUS SP 184.031 2 216 89.840 LnUCON AMERICANUS 175.069 2.108 91.948 CLASS PYCNOGONIDA 102.270 1 231 93.179 STENOTHOE SP 66.912 0 806 93.985 OXYUROSTYLIS SMITHI 57.135 0.688 94.673 AEQUOREA SP 41.088 0.495 95.167 CERAPUS TUBULARIS 35.521 0 428 95.595 EDOTEA TRILOBA 25.871 0.311 95.906 SAGITTA SP 25.865 0.311 96.218 CRANGON SEPTEMSPINOSA 21 425 0.258 96.476 TURRITOPSIS HUTRICOLA 21 163 0.253 96.731 MONOCULODES EDWARDSI 21 158 0.255 96.985 MELITA NITIDA 20 179 0.243 97.228 CRANGON SEPTEMSPINO ZOEA 18 804 0.226 97.455 ORDER CUMACEA 16 848 0 203 97.657 PANOPEUS HERBSTII 20EA 15 171 0.183 97.840 COROPHIUM ACHERUSICUM 14.102 0.170 98.010 BATEA CATHARINENSIS 13 183 0.159 98.168 ELASMOPUS LEVIS 11.051 0.133 98 302 SARSIA SP 10.668 0.128 98.430 MICR0PROTOPUS RANEYI 9.712 0.117 98.547 ERICHTHONIUS SP 9 239 0.111 98.658 CYMADUSA COMPTA 8.610 0.104 98.762 ORDER AMPHIPODA 8.481 0.102 98 864 HYDROMEDUSAE 8.142 0.098 98.962 CALLINECTES SP MEGALOP 7.192 0.087 99.048 CLASS POLYCHAETA 6.158 0.074 99.123 l

HIRUDINEA 5.940 0.072 99.194 i

CYCLASPIS VARIANS 4.852 0.058 99.253 HIPPOLYTE SP ZOEA~

4.707 0.057 99.309 NEOPANOPE TEXA SAYI 20EA 4 415 0.056 99.365 COROPHIUM BONELLI 4.421 0.053 99.418 CLASS GASTROPODA 3.430 0.041 99.459 FAMILY SYLLIDAE 3.213 0.039 99.498 GAMMARUS MUCRONATUS 2.838 0.035 99.533 IDOTE4 BALTICA 2.768 0.033 99.566 CLASS POLYCHAETA LAR 2.354 0.028 99.594 MICROLEUTOPUS GRYLLOTALP 2.340 0.028 99.623

(

TABLE 6-2 (Cont.)

SPP. NAME NUMBER CUMU. %

FAMILY CAPITELLIDAE 2 279 0.027 99.650 PALAEMONETES VULGARIS 2 065 0.025 99.675 HETER 0MYSIS FORMOSA 1 590 0.019 99.694 LISTRIELLA BARNARDI 1 580 0.019 99.713 UPOGEBIA AFFINIS ZOEA 1 468 0.018 99.731 FAMILY PHYLLODOCIDAE 1 383 0.017 99.747 PECTINARIA GOULDII 1 323 0.016 9?.763 CLASS TURBELLARIA 1 314 0.016 99.779 AUTOLYTUS SP 1 243 0.015 99.794 ORDER ACTINIARIA 1.218 0.015 99.809 CREPIOULA SP 1.081 0.013 99.322 CALLINECTES SP JUV 0.985 0.012 99.834 PAGURUS SP ZOEA 0.936 0.011 99.845 PHIALIDIUM SP HEDUSAE 0.931 0.011 99.856 SUBORDER DORIDACEA 0.924 0.011 99.867 CLASS PELECYPODA 0.861 0.010 99.878 PALAEMONETES SP ZOEA 0.861 0.010 99.888 HYDROIDES DIANTHUS 0.767 0.009 99.897 NEREIS SP 0.743 0.009 99.906 ORDER SABELLIDAE 0.715 0.009 99.915 HIPPOLYTE SP 0.608 0.007 99 922 UCA SP ZOEA 0.602 0.007 99.929 LYSIANOPSIS ALBA 0.589 0.007 99.916 dATHKEA OCT0 PUNCTATA 0.577 0.007 99 943 FAMILY MYSIDAE 0.501 0.006 99.949 PINNIXA SP ZOEA 0.496 0.006 99.955 COROPHIUM TUBERCULATUM 0.475 0.006 99.961

.MARPHYSt. SANGUINEA 0.448 0 005 99.966 UNCIOLA SP 0.413 0.005 99.971 SECTION BRACHYURA MEGALP 0.311 0.004 99.975 POLYDORA SP 0.252 0.003 99.978 PALAEMONETES SP 0.246 0.003 99 981 PODARKE OBSCURA 0.230 0.003 99.984 AMPITHOE LONGIMANA 0.225 0.003 99.987 BOUGAINVILLIA SP 0.211 0.003 99.989 CLASS INSECTA 0.198 0.002 99.992 NEMOPSIS BACHEI 0.182 0.002 99.994 CALLINECTES SAPIDUS JUV 0.156 0.002 99.996 INVERTEBRATE FRAGMENTS 0.149 0.002 99.997 TOM 0PTERIS HELGOLANDICA 0.115 0.001 99.999 FAMILY SPIONIDAE 0.104 0.001 100.000

TABLE 6-3 MONTHLY MEAN SAMPLE DENSITIES (No./100 m3) AND PERCENT COMPOSITION OF MACROZ00 PLANKTON COLLECTED AT THE DISCHARGE T THE OYSTER CREEK NUCLEA3 GENERATING STATION, SEPTEFEER 1980 - FEBRUARY 1981 OYSTERCR SEP. 80 STATION DSNT DSDA SPECIES NUMBER PCT NUMBER PCT NUMBER PCT INDIVS COMP INDIVS COMP TOTAL COMP NEOMYSIS AMERICANA 15653.24 70.02 1467.35 39.87 12500.82 68.66 JASSA FALCATA 39.61 0.18 156.68 4.26 65.63 0.36 SUBCLASS OSTRACODA 1575.09 7.05 12.25 0.33 1227.79 6.74 COROPHIUM SP 229.55 1.03 166.30 4.52 215.49 1.18 3UBORDER CAPRELLIDEA 939 72 4.20 622.00 16.90 869.12 4.77 AMPELISCA SP 981.98 4.39 7.55 0.21 765.44 4.20 MYSIDOPSIS BIGELOWI 661.79 2.96 16.43 0.45 518.38 2.85 LEUCON AMERICANUS 575.90 2.58 0 00 0.00 447.92 2.46 CLASS PYCNsGONIDA 362.40 1.62 170.78 4.64 319.82 1.76 STENOTHOE SP 55 76 0.25 397.30 10.80 131.66 0.72 OXYUROSTYLIS SMITHI 231.33 1.03 6.85 0.19 181.44 1.00 AEOUOREA SP 100.56 0.45 330.55 8.98 151.67 0.83 CERAPUS TUBULARIS 126.61 0.57 83.53 2.27 117.04 0.64 EDOTEA TRILOBA 94.35 0.42 28.60 0.78 79.74 0.44 CRANGON SEPTEMSPINOSA 9.81 0.04 0.00 0.00 7.63 0.04 TURRITOPSIS NUTRICOLA 104.18 0.47 60.08 1.43 94.38 0.52 1:0NOCULODES EDWARDSI 24.29 0.11 0.00 0.00 18.89 0.10 MELITA NITIDA 87.12 0.39 54.53 1.48 79.88 0.44 PANOPEUS HERBSTII 20EA 91.03 0.41 0.00 0.00 70.80 0.39 COROPHIUM ACHERUSICUM 16.81 0.08 13.55 0.37 16.08 0.09 BATEA CATHARINENSIS 12.06 0.05 10.80 0.29 11.78 0.06 ELASMOPUS LEVIS 15.73 0.07 0.00 0.00 12.23 0.07 MICR0PROTOPUS RANEYI 46.19 0.20 10.80 0.29 37.55 0.21 ERICHTHONIUS SP 37.01 0.17 6.22 0.17 30.17 0.17 CYMADUSA COMPTA 20.56 0.09 0.00 0.00 15.99 0.09 ORDER AMPHIPODA 32.94 0.15 0.00 0.00 25.62 0.14 HYDROMEDUSAE 14.33 0.06 0.00 0.00 11.14 0.06 CALLINECTES SP MEGALOP 19.95 0.09 6.78 0.18 17.02 0.09 CLASS POLYCHAETA 6.89 0.03 3.12 0.08 6.06 0.03 CYCLASPIS VARIANS 25.32 0.11 0.00 0.00 19.49 0.11 HIPPOLYTE SP ZOEA 22.06 0.10 3.12 0.08 17.85 0.10 NEOPANOPE TEXA SAYI ZOEA 27.69 0.12 0.00 0.00 21.54 0.12 OTHER SPECIES 115.21 0.52 44.92 1.22 99.59 0.55 STATION TOTAL AND DATE TOTAL 22356.07 3680.07 18205.85

TABLE 6-3 (cont.)

OYSTERCR OCT, 80 STATION DSNT DSDA SPECIES NUMBER PCT NUMBER PCT NUMBER PCT INDIVS C0HP INDIVS COMP TOTAL COMP

_.y-..____________________.______..___________.

NEOMYSIS AMERICANA 7141.28 68.03 1654.55 54.32 5769.59 66.82 JASSA FALCATA 194.35 1.85 168.75 5.54 187.95 2 18 SUBCLASS OSTRACODA 880.61 8.39 34.48 1.13 669 08 7.75 COROPHIUM SP 331.52 3.16 533.25 17.51 381.95 4.42 SUBORDER CAPRELLIDEA 416.13 3 96 329.30 10.81 394.42 4.57 AMPELISCA SP 150.27 1 43 15.80 0.52 116.66 1.35 MYSIDOPSIS BIGELOWI 471.18 4 49 0.00 0.00 353 39 4.09 OAMMARUS SP 7.71 0 07 0.00 0.00 S.79 0.07 LEUCON AMERICANUS 234.60 2 23 0.00 0.00 175.95 2.04 CLASS PVCN000NIDA 107.47 1 02 105.40 3.46 106.96 1.24 STENOTHOE SP 54.13 0.52 55.85 1.83 54.56 0.63 OXYUROSTYLIS SMITHI 57.25 0 55 0.00 0.00 42.94 0.50 AE000REA SP 56.78 0.54 9.98 0.33 45.08 0.52 CERAPUS TUBULARIS 49.80 0.47 24.80 0.81 43.55 0.50 EDOTEA TRILOBA 39.27 0.37 23.35 0.77 35.29 0.41 SAOITTA SP 1.o2 0 02 0.00 0.00 1.21 0.01 TURRITOPSIS NUTRICOLA 6.58 0 06 0.00 0.00 4.93 0.06 MONOCULODES EDWARDSI 3.51 0.03 0.00 0.00 2.63 0.03 MELITA NITIDA 12.25 0.12 0.00 0.00 9.19 0.11 CRAN 00N SEPTEMSPING ZOEA 26.67 0.25 4.53 0.15 21.13 0.24 COROPHIUM ACHERUSICUM 48.13 0.46 21.08 0.69 41.36 0.48 BATEA CATHARINENSIS 27.26 0.26 0.00 0.00 20.44 0.24 ELASNOPUS LEVIS 10.11 0.10 5.25 0.17 8.89 0.10 c

l MICR0PROTOPUS RANEYI 9.90 0.09 5.28 0.17 8.74 0.10 ERICHTHONIUS SP 3.63 0.03 0.00 0.6 ;

2.72 0.03 CYMADUSA COMPTA 28.91 0.28 0.00 0.00 21.68 0.25 ORDER AMPHIPODA 8.71 0.08 0.00 0 00 6.53 0.08 HYDROMEDUSAE 30.37 0.29 0.00 0.00 22.74 0.26 CALLINECTES SP MEGALOP 17.93 0.17 0.00 0.00 13.44 0.16 CLASS POLYCHAETA 7.06 0.07 2.63 0.09 5.95 0.07 HIPPOLYTE SP ZOEA 6.18 0.04 0.00 0.00 4.63 0.05 OTHER SPECIES 56.06 0.53 51.50 1.69 54.92 0.64 STATION TOTAL AND DATE TOTAL 10497.16 3045.75 8634.31

TABLE 6-3 (Cont.)

J OYSTERCR NOV. 80 STATION DSNT DSDA SPECIES NUMBER PCT NL';ibER PCT NUMBER PCT INDIVS COMP INDIVS COMP TOTAL COMP NEOMYSIS AMERICANA 3931.44 66.93 757.65 54.29 2873.51 65.59 JASSA FALCATA 161 29 2.75 93.05 6 67 138.54 3.16 SUBCLASS OSTRACODA 138.82 2 36 3.85 0.28 93.83 2.14 COROPHIUM SP 288.39 4.91 314.10 22 51 296.96 6.78 SUBORDER CAPRELLIDEA 444.24 7 56 64.80 4 64 317.76 7.25 AMPELISCA SP 98 66 1 68 3 83 0 27 67.05 1 53 MYSID 0PSIS BIGELOWI 82.51 1 40 34.70 2.49 66.58 1 52 GAMMARUS SP 7.84 0.13 3.40 0 24 6.36 0 15 LEUCON AMERICANUS 221 66 3 77 20 33 1 46 154.55 3.53 CLASS PYCN000NIDA 44.41 0 76 29 30 2 10 39.38 0.90 STENOTHOE SP 36.91 0 63 21.10 1 51 31.64 0.72 OXYUROSTYLIS SMITHI 37.34 0.64 0 00 0.00 24.89 0.57 CERAPUS TUBULARI3 6.72 0 11 3.83 0 27 5 76 0 13 EDOTEA TRILOBA 6.57 0.'11 0 00 0 00 4.38 0.10 SAGITTA SP 2 10 0 04 7.68 0.55 3.96 0.09 CRAN 00N SEPTEMSPINOSA 4.97 0 08 0 00 0 00 3.32 0.08 MONOCULODES EDWARDSI 9.6' O.16 0.00 0.00 6.41 0.15 MELITA NITIDA 8.1; 0.14 0.00 0.00 5.41 0.12 CRANGON SEPTEMSPINO ZOEA 51.3L 0.87 10.10 0.72 37.60 0.86 ORDER CUMACEA 175.44 2.99 0.00 0.00 114.96 2 67 BATEA CATHARINENSIS 29.98 0.51 0.00 0.00 19.98 0 46 ELASMOPUS LEVIS 19.42 0.33 0.00 0.00 12.95 0.30 CYMADUSA COMPTA 6.57 0.11 0.00 0 00 4.'38 0 10 ORDER AHPHIPODA 3.49 0.06 0.00 0.00 2.33 0.05 CALLINECTES SP MEGALOP 10 32 0.18 0.00 0.00 6.88 0.16 CLASS POLYCHAETA 7.96 0.14 0.00 0.00 5.31 0 12 HIRUDINEA 1.40 0.02 0.00 0.00 0.93 0.02 CYCLASPIS VARIANS 3.30 0.06 0.00 0.00 2.53 0.06 OTHER SPECIES 32.84 0.56 27.88 2.00 31.18 0.71 STATION TOTAL AND DATE TOTAL 5874.19 1395.57 4381.32

TABLE 6-3 (cont.)

OYSTEP.CR DEC. 80 STATION DSNT DSDA SPECIES NUMBER PCT NUMBER PCT NUMBER PCT INDIVS COMP INDIVS COMP TOTAL COMP i

1 NEOMYSIS AMERICANA 1332 91 34.12 879 78 50.35 1203 44 36.58 JA3SA FALCATA 1472.72 37.70 419.80 35.47 1229.03 37.36 SUBCLASS OSTRACODA 9 44 0.25 0.00 0.00 6.90 0.21 COROPHIUM SP 492.43 12.41 71 35 4.08 372.12 11.31 I

SUBORDER CAPRELLIDEA 53.18 1.41 18.25 1.04 44.63 1.36 AMPELISCA SP 48.29 1.24 0.00 0.00 34.49 1.05 NYSIDOPSIS BIGELOWI 38 10 0.98 1 95 0.11 27 77 0.84 OAMMARUS SP 61 31 1.57 0.00 0.00 43.79 1.33 LEUCON AMERICANUS 98 51 2.52 2 13 0.12 70.97 2.16 CLASS PYCN000NIDA 17.33 0.44 0.00 0.00 12.38 0.38 STENOTHOE SP 41 92 1.07 31 02 1.78 38.81 1.18 OXYUROSTYLIS SMITHI 14.43 0.42 0.00 0.00 11.74 0.36 CERAPUS TUBULARIS 1 93 0.05 8.77 0.50 3.89 0.12 EDOTEA TRILOBA 3.85 0.10 0.00 0.00 2.75 0.08 SAGITTA SP 65.99 1.69 86.70 4.96 71.91 2.19 CRANGON SEPTEP, SPINOSA 64.11 1.49 0.00 0.00 47.22 1.44 MONOCULODES EDWARDSI 17 60 0. 4'J 0.00 0.00 12.57 0.38 CRAN 00N SEPTEMSPING ZOEA 12.51 0.32 6.03 0.34 10.66 0.32 BATEA CATHARINENSIS 5.79 0.15 0.00 0.00 4.14 0.13 ELASMOPUS LEVIS 5.79 0.15 0.00 0.00 4.14 0.13 ERICHTHONIUS SP 1.93 0.05 0.00 0.00 1.38 0.04 ORDER AMPHIPODA 1.93 0.05 0.00 0.00 1.38 0.04 HYDROMEDUSAE 0.97 0.02 0.00 0.00 0.49 0.02 CLASS POLYCHAETA 4.63 0.12 0.00 0.00 3.31 0.10 HIRUDINEA 0.76 0.02 6.45 0.38 2.44 0.07 OTHER SPECIES 31.90 0.82 14.18 0.85 27.01 0.82 CTATION TOTAL AND DATE TOTAL 3906.48 1747.20 3289.54

T TABLE 6-3 (Cont.)

l JAN. 81 OYSTERCR STATION DSNT DSDA SPECIES NUMBER PCT NUMBER PCT NUMBER PCT INDIVS COMP INDIVS COMP TOTAL COMP NEOMYSIS AMERICANA 670.26 21.10 439.38 8.78 593.30 15.67 JASSA FALCATA 1720.70 54.17 2662.60 53.20 2034.67 53.75 SUBCLASS OSTRACODA 16.28 0.51 2 42 0.05 11.66 0.31 COROPHIUM SP 108.68 3 42 1550.68 30.99 589.34 15.57 SUBORDER CAPRELLIDEA 61.39 1 93 29.33 0.59 30.70 1.34 AMPELISCA SP 162.41 5.11 0.00 0.00 108.28 2.86 MYSIDOPSIS BIGELOWI 4.65 0 15 0.00 0.00 3.10 0.08' GAMMARUS SP 69.05 2.17 13.33 0.27 50.48 1,33 LEUCON AMERICANUS 95.11 2.99 4.55 0.09 64.93 1.71 CLASS PYCN000NIDA 0.00 0 00 2.42 0.05 0.81 0.02 STENOTHOE SP 48.43 1 53 78.88 1.58 58.71 1.55 OXYUROSTYLIS SMITHI 9.54 0.30 4.55 0.09 7.87 0.21 CERAPUS TUBULARIS 7.10 0.22 0.00 0.00 4.73 0.13 EDOTEA TRILOBA 3.89 0 12 2.42 0.05 3.40 0.09 SAOITTA SP 38.46 1 21 53 20 1.06 43.38 1.15 CRANGON SEPTEMSPINOSA 12.24 0.39 0.00 0.00 8.16 0.22 MONOCULODES EDWARDSI 44.53 1 40 0.00 0.00 29.68 0.78 COROPHIUM ACHERUSICUM 0.00 0.00 49.35 0.99 14.45 0.43 ELASMOPUS LEVIS 12.34 0.39 8.48 0.17 11.05 0.29 SARSIA SP 0.00 0.00 2.13 0.04 0.71 0.02 ERICHTHONIUS SP 0.00 0.00 12.35 0 25 4.12 0.11 CLASS POLYCHAETA 19.28 0.61 4.85 0.10 14.47 0.38 HIRUDINEA 8.45 0.27 14.48 0 29 10.46 0.28 OTHER SPECIES 63.45 2.00 69.13 1.38 65.34 1.73 STATION TOTAL AND DATE TOYAL 3176.41 5004.50 3785.77

TABLE 6-3 (Cont.)

OYSTERCR FEB. 81 STATION DSNT DSDA SPECIES NUMBER PCT NUMBER PCT NUMBER PCT INDIVS COMP INDIVS COMP TOTAL COMP NEOMYSIS AMERICANA 3620 73 38.04 92.28 3.16 2444.57 33.40 JASSA FALCATA 2450 40 27.84 2213.03 75.76 2504.41 34.22 SUBCLASS OSTRACODA 19 60 0.21 2.55 0 09 13.92 0.19 COROPHIUM SP 484.53 5.09 261.07 8'.94 410.04 5.40 SUBORDER CAPRELLIDEA 45 03 0.68 17.65 0 60 49.23 0.47 AMPELISCA SP 188.44 1.98 20.48 0 70 132.45 1 81 NYSIDOPSIS BIGELOWI 5 50 0.06 0.00 0 00 3.67 0.05 OAMMARUS SP 1750.49 18.39 16.73 0.37 1172.57 16 02 LEUCON AMERICANUS 22.49 0.24 4.80 0.16 16.73 0 23 CLASS PYCN000NIDA 51.97 0.55 12.85 0 44 38.93 0 53 STENOTHOE SP 77.05 0.81 33.48 1 15 42.52 0.85 OXYUROSTYLIS SMITHI 35.01 0 37 2.17 0 07 24.07 0 33 EDOTEA TRILOBA 4.09 0 04 2.17 0 07 3.45 0.05 SAGITTA SP 42.75 0.45 59.15 2 02 48'.22 0.66 CRANGON SEPTEMSPINOSA 107.94 1 13 0.00 0.00 71.96 0 98 MONOCULODES EDWARDSI 98.25 1.03 0.00 0.00 65.50 0 89 MELITA NITIDA 5 64 0.06 0.00 0.00 3.77 0.05 CRANGON SEPTEMSPINO 20EA 77.84 0.82 4.58 0.16 53.42 0.73 ORDER CUMACEA 1,46 0.02 0.00 0.00 0.97 0 01 COROPHIUM ACHERUSICUM 0.00 Ot00 3.98 0 31 2.99 0.04 BATEA CATHARINENSIS 29.80 0.31 8.05 0.28 22.55 0.31 ELASMOPUS LEVIS 14.04 0.15 26.90 0.92 18.33 0.25 SARSIA SP 79.58 0.84 62.75 2.15 73.97 1.01 ERICHTHONIUS SP 5.66 0:06 18.90 0.65 10.08 0.14 CYMADUSA COMPTA 0.00 0.00 C. ?8 0.31 2.99 0.04 ORDER AMPHIPODA 12.45 0.13 0.00 0.00 8.30 0.11 HYDROMEDUSAE 13.71 0.14 0.00 0.00 9.14 0.12 CLASS POLYCHAETA 0.00 0.00 7.38 0.25 2.46 0.03 HIRUDINEA 41.01 0.43 0.00 0.00 27.34 0.37 CYCLASPIS VARIANS 2.84 0.03 0.00 0.00 1.89 0.03 OTHER SPECIES 10.04 0.11 36.13 1.24 18.73 0.26 STATION TOTAL AND DATE TOTAL 9518.54 2921.02 731?.36

TABLE 6-4 MONTHLY EAN S MPLE DENSITIES (No./tuo m3) AND PERCENT COMPOSITION OF MACR 0200PLANKTOi COLLECTED At THE INTAKE OF THE OYSTER CREEK NUCLEAR GENERATING STATION, SEPTEMBER 1980 - FEBRUARY 1981 SEP. 80 OYSTERCR STATION INNT INDA SPECIES NUMBER PCT NUMBER PCT NUMBER PCT INDIVS COMP INDIVS COMP TOTAL COMP FnMILY MYSIDAE 8493.87 57.44 355.00 22.52 6685.25 36.41 ORDER AMPHIPODA 1538.69 10.41 53,90 3.42 1208.73 10.20 SUBORDER CAPRELLIDEA 2185 46 14.78 119.05 7.55 1726.26 14.57 SUBCLASS OSTRACODA 965.03 6.53 2.38 0.15 751.11 6 34 ORDER CUMACEA 512.51 3 47 0.00 0.00 398.62 3 36 HYDROMEDUSAE 190 91 1 29 613.33 38 90 284.78 2 40 CLASS PYCNOGONIDA 249.39 1.49 38 35 2 43 202 49 1.71 MNEMIOPSIS LEIDYI 234.48 1.59 341 77 21 48 258.32 2 18 CLASS POLYCHAETA 46 95 2.32 2.38 0 15 37.04 0 31 FAMILY XANTHIDAE 20EA 192 21 1 30 2.38 0.15 150.03 1 27 CRANGON SEPTEMSPINOSA 4.71 0.03 0 00 0.00 3 66 0 03 SAGITTA SP 0.00 0.00 2.88 0 18 0.64 0.01 ORDER ISOF0DA 75 06 0.51 23.25 1 47 63 54 0.54 CALLINECTES SP MEGALOP -

28.33 0.19 5.70 0.34 23.30 0 20 CLASS GASTROPODA 18.51 0.13 2.38 0 15 14.93 0.13 HIPPOLYTE SP ZOEA 9.18 0.06 9.07 0.58 9.16 0.08 SECTION BRAc4YURA MEGALP 14.51 0.10 0 00 0 00 11.29 0.10 SUBORDER AEOLIDACEA 5.68 0.04 0.00 0.00 4.42 0.04 FAMILY CYMOTHOIDAE 4.41 0.03 2.38 0.15 3.96 0.03 LEPTOSYNAPTA SP 5.06 0.03 0.00 0.00 3.94 0.03 PALAEMONETES SP 20EA 4.30 0.03 0.00 0.00 3.34 0.03 INVERTEBRATE FRAGMENTS 3.49 0.02 0.00 0.00 2.87 0.02 UPOGEBIA AFFINIS 20EA 3.29 0.02 0.00 0.00 2.56 0.02 PAGURUS SP ZOEA 0.68 0 00 2.38 0.15 1.06 0.01 STATION TOTAL AND DATE TOTAL 14786.91 1576.55 11851 27 l

TABLE 6-4 (Cent.)

OYSTERCR OCT. 80 STATION INNT INDA SPECIES NUMBER PCT NUMBER PCT NUMBER PCT INDIVS COMP INDIVS COMP TOTAL COMP FAMILY MYSIDAE 7743 18 71.11 3692.42 76.38 6730.49 71.79 ORDER AMPHIPODA 862.48 7.92 376.68 7.79 741.03 7.90 SUBORDER CAPRELLIDEA 618.22 5.68 454.30 9.40 577.24 6.16 SUBCLASS OSTRAC00A 988.70 9.08 12.38 0.26 744.62 7.94 ORDER CUMACEA 337.74 3.10 11.55 0.24.

254.19 2.73 HYDROMEDUSAE 51.75 0.48 8.93 0 18 41.04 0.44 CLASS PYCNOGONIDA 153.93 1.41 145.30 3.01 151.78 1.42 MNEMIGPSIS LEIDYI 29.66 0,27 11.98 0.25 25.24 0.27 CLASS POLYCHAETA 24.84 0.23 63.15 1.31 34.42 0.37 CRANGON SEPTEMSPING ZCEA 11.92 0.11 22.23 0.46 14.49 0.15 ORDER ISOPODA 30.68 0.28 17.83 0.37 27.46 0.29 CALLINECTES SP MEGALOP 27.08 0.25 11.55 0.24 23.19 0.25 CLASS POLYCHAETA LAR 0.00 0.00 6.20 0.13 1.55 0.02 HIPPOLYTE SP ZOEA 3.37 U.04 0.00 0.00 3.28 0.03 PALAEMONETES VULGARIS 2.59 0.02 0.00 0.00 1.94 0. 0.'

CALLINECTES SAPIDUS JUV 1.43 0.01 0.00 0.00 1.07 0.01 PALAEMONETES SP 0.75 0.01 0.00 0.00 0.56 0.01 l

STATIO TOTAL AND

'DATE TOTAL 10889.30 4834.48 9375.59 i

l l

I i

1 l

l l

TABLE 6-4 (Cont.)

OYSTERCR NOV. 80 STATION INNT INDA SPECIES NUMBER PCT NUMBER PCT NUMBER PCT INDIVS COMP INDIUS COMP TOTAL COMP FAMILY MYSIDAE 7202.50 80.11 2105 63 92.45 5503.54 81.50 ORDER AMPHIPODA 314 13 3.49 39 65 1.74 222.63 J.30 SUBORDER CAPRELLIDEA 552.97 6 15 35.50 1.56 380.48 5.63 SU3 CLASS OSTRACODA 102 16 1 14 0.00 0.00 68.11 1.01 ORDER CUMACEA 600.79 6 68 8.20 0.34 403 26 5.97 HYDROMEDUSAE 0.00 0.00 2.70 0.12 0.90 0.01 CLASS PYCNOGONIDA 16.63 0.18 23.83 1.05 19.02 0.28 MNEMIOPSIS LEIDYI 9.18 0.10 0.00 0.00 6.12 0.09 CLASS POLYCHAETA 16.19 0.18 2.70 0.12 11 69 0.17 CRANGON SEPTEMSPINO ZOEA 85.67 0.95 11.10 0.49 60.8? 0.90 CRANGON SEPTEMSPINOSA 12.14 0.13 0.00 0.00 8.0*

0.12 SA0!TTA SP 2.80 0.03 5.50 0.24 3.70 0.05 ORDER ISOPODA 12.46 0.14 0.00 0.00 8.31 0.12 HIRUDINEA 4.35 0.05 0.00 0.00 2.90 0.04 CALLINECTES SP MEGALOP 13.09 0.15 0.00 0.00 8.72 0.13 CL ASS POLYCHAET A '_AR 29.14 0.!2 10.80 0.47 23.03 0.34 PHYLUM CTENOPHORA 0.00 0.00 24.48 1.07 8.16 0.12 PALAEHONETES VULGARIS 11.38 0.13 0.00 0.00 7.58 0.11 CALLINECTES SAPIDUS JUV 5.51 0.06 0.00 0.00 3.67 0.05 ORDER ACTINIARIA 0.00 0.00 4.75 0.21 1.58 0.02 BERGE OVATA 0.00 0.00 2.70 0.12 0.90 0.01 STATION TOTAL AND DATE TOTAL 8991.07 2277.52 6753.22 l

TABLE 6_4 (Cont.)

OYSTERCR DEC. 80 STATION INNT INDA SPECIES NUMBER PCT NUMBER PCT NUMBER PCT INDIVS COMP INDIVS COMP TOTAL COMP FAMILY MYSIDAE 2394.40 77.79 1048.78 76.15 2009 94 77 54 ORDER AMPHIPODA 182.41 5.93 92.10 6.69 156.61 6 04 SUBORDER CAPRELLIDEA 101.66 3.30 34 20 2.48 82.39 3 18 SUBCLASS OSTRACODA 11 88 0.39 1.90 0 14 9.03 0 35 CRDER CUMACEA 100 45 3.27 7.65 0.54 74.08 2 86 CLASS PYCNOGONIDA 4 13 0.20 4.37 0.32 5.43 0 22 MNEMIOPSIS LEIDYI 11 37 0.37 1.90 0 14 8.66 0 33 CLASS POLYCHAETA 40.63 1 32 24.95 1.81 36.15 1 39 CRANGON SEPTEMSPINO ZOEA 23 46 0.76 9.95 0.72 19.60 0 76 CRANGON SEPTEMSPINOSA 94.06 3.06 0.00 0.00 67.19 2 59 SAGITTA SP 54.18 1.76 82.68 6 00 62.32 2 40 ORDER ISOPODA 3.64 0.12 7.05 0.51 4.63 0 18 HIRUDINEA 20.57 0.47 5.15 0.37 16.14 0.62-CLASS POLYCHAETA LAR 12.11 0.39 8.93 0.65 11.20 0.43 CLASS GASTROPODA 0.00 0.00 1.90 0.14 0.54 0.02 PLEUROBRACHIA PILEUS 11.31 0.37 15.50 1.13 12.31 0.48 PHYLUM CTENOPHORA 5.00 0.16 22.10 1.60 9.89 0 38 PALAEMONETES VULOARIS 2.52 0.08 0.00 0.00 1.80 0.07 SUBORDER AEOLIDACEA 0 82 0.03 0.00 0.00 0.59 0.02 ANNELIDA 0.00 0.00 8.07 0.59 2.31 0.09 PHYLUM NEMERTEA 1.39 0.05 0.00 0.00 0.99 0.04 STATION TOTAL AND DATE TOTAL 3078 21 1377.18 2592.20

TA2LE 6-4 (Cont.)

OYSTERCR JAN. 81 STATION INNT INDA SPECIES NUMBER PCT NUMBER PCT NUMBER PCT INDIVS COMP INDIVS COMP TOTAL COMP FAMILY MYSIDAE 1470.65 64.23 525.60 49.46 1092.63 60.74 ORDER AMPHIPODA 406.13 17.74 171.10 16.10 312.12 17.35 SUBORDER CAPRELLIDEA 64.88 2.83 79.93 7.52 70.90 3.94 SUBCLASS OSTRACODA 16.82 0.73 6.58 0.62 12.72 0.71 ORDER CUMACEA 153.20 6.69 11.33 1.07 96.45 5.36 HYDROMEDUSAE 0.00 0.00 4.18 0.39 1.47 0.09 CLASS PYCNOGONIDA 1.95 0.09 10.85 1.02 5.51 0.31 CLASS POLYCHAETA 86.92 3.80 62.63 5.89 77.20 4 29 CRANGON SEPTEMSPINO ZOEA 1.45 0.06 0.00 0.00 0.87 0.05 CRANGON SEPTEMSPINOSA 18.12 0.79 0.00 0.00 10.87 0.60 SAGITTA SP 27.28 1 19 55.83 5.25 38.70 2.15 ORDER ISOPODA 4.92 0 30 6.90 0.65 6.91 0.38 HIRUDINEA 27.00 1.18 8 25 0.78 19.50 1.08 CLASS POLYCHAETA LAR 1.95 0.09 2.10 0.20 2.01 0 11 NEOMYSIS AMERICANA 0.00 0.00 106 57 10.03 42.63 2.37 j

CLASS GASTROPODA 1 22 0.05 4.22 0.40 2.42 0 13 PLEUROBRACHIA PILEUS 2.67 0.12 6.58 0.62 4.23 0.24 PALAEMONETES VULGARIS 1.22 0.05 0.00 0.00 0.73 0.04 SUBORDER AEOLIDACEA 1.30 0.06 0.00 0.00 0.78 0.04 STATION TOTAL AND DATE TOTAL 2289.67 1062.62 1798.85 i

4 i

4

TABLE 6_4 (Cont.)

1 OYSTERCR FEB. 81 STATION INNT INDA SPECIES NUMBER PCT NUMBER PCT NUMBER PCT INDIVS COMP INDIVS COMP TOTAL COMP i

FAMILY MYSIDAE 3847.00 69.09 32.70 7.45 2575.57 66.82 ORDER AMPHIPODA 964.48 17.36 115.10 26.93 682.68 17.71 SUBORDER CAPRELLIDEA 22.96 0.41 7.95 1.86 17.96 0.47 SUBCLASS OSTRACODA 21.50 0.39 0.00 0.00 14.33 0.37 ORDER CUMACEA 110.75 1 99.

2.65 0.62 74.72 1.94 HYDROMEDUSAE 201.99 3.63 106.28 24.86 170.08 4.41 CLASS PYCNOGONIDA 4.93 0.09 13.75 3.22 7 87 0.20 CLASS POLYCHAETA 15.84 0.28 5.95 1.39 12.54 0.13 CRANGON SEPTEMSPINO ZOEA 122.08 2.19 66 18 15.48 103.44 2,64 CRAN 00N SEPTEMSPINOSA 127.96 2.30 0.00 0.00 85.31 2.21 SAGITTA SP 56.42 1.01 70.98 16.60 61.28 1.59 ORDER ISOPODA 5.40 0.10 0.00 0.00 3.73 6.10 39.21 1.02 HIRUDINEA 58.81 1.06 0.00 0.00~

1.60 0.04 CLASS POLYCHAETA LAR 2.40 0.04 0.00 0.00 PLEUROBRACHIA PILEUS 1.20 0.02 5.95 1.39 2.78 0.07 PAL 4EMONETES VULGARIS 2.25 0.04 0.00 0.00 1.50 0.04 STATION TOTAL AND DATE TOTAL 5568.16 427 47 3854.60

TABLE 6-5 ESTIMATED NUMBERS OF KEY AND ABUNDANT MACR 0 INVERTEBRATES ENTRAINED AT THE OYSTER CREEK NUCLEAR GENERATING STATION, SEPTEMBER 1980 - FEBRUARY 1981 Estimated Number 80PercentContgdence 6

Species and Life Stages (a)

Entrained (x 10 )

Level (x 10 )

Ostracoda 1,907.48 439.55 Neomysis american:

26,512.31 7,114.25 Mysidopsis bigelowi 963.95 512.01 Leucon americanus 953 92 249.80 Gammarus sp.

2,273.03 1,671.93 Ampelisca sp.

1,238.79 360.56 Jassa falcata 9,701.08 2,481.09 Corophium sp.

3,601.87 1,210.27 Corophium tuberculatum 7.85 12.76 Capre111 dea 2,147.01 40~.82 Crangon septemspinosa zoeae 174.71 63.68 Crangon septemspinosa 196.60 43.62 Callinectes sp. megalopae 38.65 20.04 Total 54,113.84 i8,628.39

r 7.

COMMERCIAL LANDINGS OF FINFISH AND SHELLFISH Commercial landings data were compiled for Ocean and Atlantic counties (Tables 7-1 and 7-2, respectively), New Jersey.

Data were available only for September through January for the September 1980 - February 1981 report-ing period. Separate landings data for Barnegat Bay are no longer compiled by the National Marine Fisheries Service; commercial landings from the bay are reported as a component of the Ocean County landings.

Landings of the summer flounder produced the greatest weight and value in Ocean County (Table 7-1).

Landings of weakfish were second in weight and third in value, while landings of hard clam (meats) were third in weight and second in value.

Other species that contributed substantial portions to the Ocean County landings include blue crab, bluefish, winter flounder, and striped bass.

The top three species in commercial landings from Atlantic County include hard clam (meats), summer flounder, and blue crab. Weakfish and winter flounder also contributed substantial portions to the total landings.

Uith the exception of hard clams, landings of all species were much lower in Atlantic County.

The contribution of commercial landings from Barnegat Bay to the totsl landings of Ocean County is difficult to determine now that separate landings are not compiled.

However, several generalizations can be made based on past years' data.

For the period from September through January, Ocean County landings of blue crab and white perch are entirely from Barnegat Bay.

Barnegat Bay landings of winter flounder contribute a substantial portion (40-98 percent) to the total Ocean County landings. Hard clam landings from Barnegat Bay form a smaller portion (25-40 percent) of the Ocean County landings, while the landings of summer flounder, weakfish, bluefish, and striped bass are entirely from outside Barnegat Bay.

t l

l 7-1

TABLE 7-1 TOTAL REPORTED COMMERCIAL LANDINGS (kg) AND VALUE OF FINFISH AND SHELLFISH TAKEN FROM OCEAN COUNTY, NEW JERSEY, SEPTE)SER 1980 - JANUARY 1981 September Oc tober November December January Total Weight Value Weight Value idelght Value Weight Value Weigh t Value Weight Value Species (kg)

($)

(kg)

($)

(kg)

($)

(kg)

($).

(kg)

($)

(kg)

($)

Blue rish 0

0 0

0 29,790 11.581 374 239 148 66 30,312 11,886 American eel 652 1,148 0

0 0

0 652 1,148 Winter flounder 0

0 2,327 753 2,136 1,64 5 35 1 125 427 311 5,241 2,834 Susumer flounder 163,422 180,159 15,589 11,862 2,309 1,769 1,340 1,901 51.103 189,625 233,763 385,316 Weak rish 79,264 58,995 35,979 28,788 16,029 11,938 0

0 14 8 65 131,420 99,786 White perch 0

0 0

0 318 280 0

0 0

0 318 280 Striped bass 0

0 559 1, Ao 1,686 3,954 5

11 218 486 2,468 6,391 Blue crab 7,080 7,0?2 30,816 27,141 0

0 0

0 37,896 34,163 Hard clan (meata) 21,368 94,020 17,214 75,740 15,155 66,68u 11,718 51,560 2,65 5 13,141 68,110 301,141

TABLE 7-2 TOTAL REPORTED COMERCIAL LANDIN(S (kg) AND VALUE OF FINFISH AND SHELLFISH TAKEN FROM ATLANTIC COUNTY, NEW JERSEY, SEPTEMER 1980 - JANUARY 1981 September October November Deceed>er January Total Weight Value Weight Value Weight Value Weight Value Weight Value We igh t Value Spooles (kg)

($)

AL

($)

(kg)

($)

(kg)

_ ($)

.. ( kg )

($)

Ikg))_

($)

Blue fish 267 65 0

0 0

0 267 65 American cel 209 368 0

0 0

0 209 368 Winter flounder 0

0 0

0 1,500 1,155 0

0 0

0 1,500 1,155 Summer flounder 31 C35 32,284 281 390 0

0 0

0 31,316 32,674 Weaktish 4,718 2.594 0

0 0

0 4,718 2,594 White perch 0

0 0

0 182 160 0

0 0

0 182 160

.'triped bass 0

0 0

0 Blue crab 7,818 6,450 3,582 2,955 0

0 0

0 11,400 9,405 Hani clan (ments) 20,996 93,380 12,646 55,640 13,082 57,560 8,709 38,320 4,586 22,703 60,019 267,603 r

l i

1

8. FISH-KILL MONITORING The Environmental Technical Specifications require that Oyster Creek be exam-ined for dead fish anytime the Oyster Creek Nuclear Generating Station shuts down and the water temperature is below 8.5 C.

In addition, any fish kill in the vicinity of the OCNGS while the station is operating is classified as an " Unusual or Impartant Environmental Event" and must be reported promptly to the Nuclear Regulatory Commission. Two fish kills occurred near the OCNGS j

during the September 1980 - February 1981 reporting period. These kills occurred on 18 and 22 November 1980.

A summary of activities and observa-tions associated with the reported fish kills at the OCNGS is presented in Table 8-1.

The fich kills of late November occurred as a direct result of lowered water temperatures in Oyster Creek. The kill of 18 November was most likely the result of a rapid seasonal decline in ambient water temperature. Ambient water temperatures were recorded at 6 C on 17 November; water temperatures were measured at 9.4 C midway doun the thermally elevated Oyster Creck.

All but one individual killed at this time were blue runners (Caranx crysos),

a subtropical species. The OCNGS remained at full power output during the p3riod preceding this incident and the number of pumps employed remained constant.

t The kill of 22 November was the direct result of a planned shutdown that began on 21 November 1980.

In anticipation of the shutdown, individuals of the two most abundant fish taxa (bluefish and jacks) in the warmwater dis-charge were caught by hook and line, tagged by affixing a staple to the caudal fin, and immediately released into the discharge. All fish collected during the kill were inspected for these tags.

The shutdown began at 2200 hours0.0255 days 0.611 hours 0.00364 weeks 8.371e-4 months on 21 November 1980 and was completed by the early hours of 22 November.

Disoriented jacks were first observed at 0125 hours0.00145 days 0.0347 hours 2.066799e-4 weeks 4.75625e-5 months when the water temperature had reached 10.5 C.

Dead jacks first appeared at 0212 hours0.00245 days 0.0589 hours 3.505291e-4 weeks 8.0666e-5 months with water temperature ranging from 9.0 to 10.7 C.

Dead bluefish first appeared at 0625 hours0.00723 days 0.174 hours 0.00103 weeks 2.378125e-4 months by which time the water temperature had lowered to 6.3-7.1 C.

The kill was essentially over by 1000 hours0.0116 days 0.278 hours 0.00165 weeks 3.805e-4 months that morning. The total number of fish collected was 4,228; of this total 1,038 were bluefish and 3,163 were jacks. Other species found dead were ladyfish (Elops saurus), smooth dogfish (Mustelus canis), Atlantic menhaden (Brevoortia tyrannus), northern kingfish (Menticirrhus saxatilis), American eel ( Anguilla rostrata), gray snapper (Lutjanus griseus), and silver jenny (Eucinostomus gla).

A total of 11 tagged jacks and 5 tagged bluefish were collected.

Use of an adjusted Petersen single-census population estimate for the jack population, as described by Ricker (1975) yielded an estimated 17,402 jacks present in the discharge at the time of shutdown (10,088 - 32,629 at p = 0.95).

The same method employed for bluefish yielded an estimated 48,833 individuals present at the discharge when the shutdown began (23,071 - 112,692 at p = 0.95).

Information from Hoff (1971), Wyllie et al. (1976), and Roche (1980) suggest that the ambient temperatures encountered were below critical thermal mini-mum for the jacks but that only a portion of the bluefish population died as a result of coldwater shock. The collection of live bluefish more than 24 8-1

a.

hours after the shutdown provides evidence that not all bluefish were killed.

Thus, the population estimate for jacks is identical to the estimated number killed by the plant shutdown, whereas the population estimate for the blue-fish is not. The percentage tag returns for jacks were 16.9 percent compared to 1.8 percent returns for bluefish.

Assuming both species beach themselves at the same rate after death, it is plausible to suggest that approximately one-tenth of the bluefish population present at the time of the shutdown were killed during that period, roughly 4,880 individuals.

8-2

TABLE 8-1 CHRONOLOGICAL SUMMfRY OF ACTIVITIES AND FINDINGS ASSOCIATED WITH FLiH-KILL OBSERVATIONS AT THE OYSTER CREEK NUCLEAR GENERATING STATION, SEPTEMBER 1980 - FEBRUARY 1981 Date Activity Finding l

18 NOV 80 Discharge canal Shoreline collections from 1610 to 1715 observation dip-hours yielded 55 dead blue runners.

netting 19 NOV 80 Oyster Creek otter Four trawls in lagoons and creek trawls yielded nine dead blue runners and one dead white perch.

20 NOV 80 Discrarge canal Thousands of bluefish and jacks observed observation in discharge bays. Gill netting col-lected bluefish, bice runners, white perch, crevalle jack, tautog, and striped bass. Atlantic needlefish and blue crab observed on surface of discharge.

20-21 Tagging effort Staple tags were attached to fish after NOV 80 collection by angling 281 of bluefish and 65 jacks.

21, ?

Water quality mea-Four sets of temperature-profile data WCV 80 surements of were collected at each station.

Oyster Creek at mouth and at Rt. 9 bridge 22 NOV 80 Fish-kill shoreline Shoreline collections from 0625 to 1200 observations hours yielded:

Bluefish 1,025 Jacks 3,153 Ladyfish 3

Silve.+ jenny 1

Gray alapper American eel 1

Smooth dogfish 17 Atlantic menhaden 2

Northern kingfish 2

23 NOV 80 Oyster Creek trawls Ten trawls at the mouth of Oyster Creek and lagoons yielded 10 dead jacks and 13 dead bluefish. Additionally, eight live bluefish were collected.

REFERENCES

Danila, D.J.,

C.B. Milstein, and associates.

1979.

Ecological Studies for the Oyster C1-cek Generating Station, Progress Report for the Period Sep-tember 1977 - August 1978.

Ichthyological Associates, Inc., Ithaca, N.Y.

391 pp.

Ecological Analysts, Inc.

1980.

Progress Report of Ecological Studies at the Oyster Creek Nuclear Generating Station, April - August 1979.

EA, Towson, Md.

Ecological Analysts, Inc.

1981.

Ecological Studies at Oyster Creek Nuclear Generating Station, Progress Report, September 1979 - August 1980.

EA, Sparks, Md.

Ho ff, J.G.

1971. Mass mortality of the crevalle jack, Caranx hippos (Linnaeus), on the Atlantic Coast of Massachusetts.

Chesapeake Sci.12(1):49.

Jersey Central Power and Light Company.

1978.

Oyster Creek and Forked River Nuclear Generating Stations 316(a) and (b) Demonstrations. Morristown, N.J.

Miller, G.J.

1978.

Impingement of fishes and macroinvertebrates on the traveling screens, in Ecological Studies for the Oyster Creek Generating Station, Progress Report for the Period September 1976 - August 1978 (T.R. Tatham, D.J. Danila, and D.L. Thomas, eds.).

Ichthyological Asso-ciates, Ithaca, N.Y.

661 pp.

Ricker, W.E.

1975.

Computation and Interpretation of Biological Statistics of Fish Populations. Bull.191, Fish. Res. Board Can. 382 pp.

Roche, M.B.

1980.

Fish Kill Associated with the January 5,1980 Outage at Oyster Creek Nuclear Generating Station.

Technical Report, Jersey Central Power & Light Co.

Tatham, T.R., D.J. Danila, D.L. Thomas, and associates.

1977.

Ecological l

Studies for the Oyster Creek Generating Station, Progress Report for the Period September 1975 - August 1976.

Ichthyological Associates, Inc.,

Ithaca, N.Y.

338 pp.

Tatham, T.R.,

D.L. Thomas, and G.J. Miller.

1978. Survival of fishes and macroinvertebrates impinged at Oyster Creek Generating Station, in Fourth National Workshop on Entrainment and Impingement (L.D. Jensen, ed.),

pp. 235-243 EA Communications, Melville, N.Y.

424 pp.

l l

U.S. Atomic Energy Commission.

1974 Final Environmental Statement Related l

to operation of Oyster Creek Nuclear Generating Station. Washington.

U.S. Nuclear Regulatory Commission. 1978.

Oyster Creek Nuclear Generating Station Technical Specifications, Appendix 9B" to License No. DPR-16.

Washington.

l

i

)

i Wyllie, M.C., E.R. Holmstrom, and R.K. Wallace.

1976. Temperature Prefer-ence, Avoidance, Shock, and Swim Speed Studies with Marine sa.d Estuarine Organisms of New Jersey. Ichthyological Associates, Bull. 15. 76 pp.

APPENDIX A LIST OF SCIS'TIFIC AND COMMON NAMES OF FINFISHES ENCOUNTERED DURING BARNEGAT BAY FISHERIES IMPINGEMENT AND ENTRAINMENT SAMPLING, SEPTEMBER 1980 - FEBRUARY 1981 Scientific Name Common Name Dasyatis sayi Blun, nose stingray Anguilla rostrata American eel Conger oceanicus, Conger eel Myrophis punctatus Speckled worm eel Alosa aestivalis Blueback herring Alosa pseudoharengus Alewife Alosa sapidissima American shad Brevoortia tyrannus Atlantic menhaden Dorosoma cepedianum Gizzard shad Etrumeus teres Round herring Anchoa hepsetus Striped anchovy Anchoa mitchilli Bay anchovy Umbra pygmaea Eastern mudminnow Synodus foetens Inshore lizardfist Notemigonus crysoleucas Golden shiner Opsanus tau Oyster toadfish 1

Merluccius bilhearis Silver hake Leophycis chuss Red hake Urophycis regius Spotted hake Rissola g ginata Striped cusk-eel Hyporhamphus unifasciatus Halfbeak i

Si.rongylura marina Atlantic needlefish Tylosurus acus Agujon Cyprinodon variegatus Sheepshead minnow Fundulus diaphanus Banded killifish Fundulus heteroclitus Mummichog Fundulus majalis Striped killifish Lucania parva Rainwater killifish l

Membras martinica Rough silverside Menidia beryllina Tidewater silverside Menidia menidia Atlantic silverside Apeltes quadracus Fourspine stickleback Gasterosteus aculeatus Threespine stickleback Fistularia tabacaria Bluespotted cornetfish Hippocampus erectus Lined seahorse Syngnathus fuscus Norther *. pipefish Morone americana White perch Centropristis striata Black sea bass Etheostoma fusiforme Swang darter Pomatomus saltatrix Pluefish auchycentron canadum Cobia Alectis crinitus African pompaw Caranx hippos Crevalle jack Caranx crysos Blue runner Decapterus punctatus Round scad Selene vomer Lookdown l

l

APPENDIX A (CONT.)

Scientific Name Common Name Trachinotus falcatus Permit Lutjanus griseus Gray snapper Stenotomus chrysops Scup Bairdiella chrysura Silver perch Cynoscion regalis Weakfish Leiostomus xanthurus Spot Menticirrhus saxatilis Northern kingfish Chaetodipterus faber Atlantic spadefish Chaetodon ocellatus Spotfin butterflyfish Tautoga onitis Tautog Tautogolabrus adspersus Cunner Mugil cephalus Striped mullet Mugil curema White mullet Sphyraena borealis Northern sennet Astroscopus guttatus Northern stargazer Chasmodes bosquianus Striped blenny Hypsoblennius hentzi Feather blenny Ammodytes amerf snus American sand lance Gobiosoma bosci Naked goby Peprilus triacanthus Butterfish Scorpaena brasiliensis Spotted scorpionfish Prionotus carolinus Northern searobin Prionotus evolans Striped searobin Myoxocephalus aenaeus Grubby Etropis microstomus Smallmouth flounder Paralichthys dentatus Summer flounder Paralichthys oblongus Fourspot flounder Scophthalmus aquosus Windowpane Pseudopleuronectes americanus Winter flounder Trinectes maculatus Hogchoker Aluterus schoepri Orange filefish Monocanthus hispidus Planehead filefish Lactophrys trigonus Trunkfish Lactophrys triqueter Smooth trunkfish Sphoeroides maculatus Northern puffer Chilomycterus schoepfi Striped burrfish r

APPENDIX B:

OTTER TRAWL DATA l

l Appendix B is arranged by sampling date.

The catch data are expressed as total specimens captured at a station (NUMBER INDIVS) and percent composition (PCT COMP). The sampling stations are identified by the first three letters of the code:

CDC = Cedar Creek, FKR = Forked River, DBC = Double Creek, and OYC = Oyster Creek. The last letter of the station code denotes day samples (D) and night samples (N).

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403.00 97.11 193.00 94.15 596.00 96.13 PALAEMONETES VULGARIS 3.00 0.72 2.00 0.98 5.00 0.81 APELTES 00nDRACUS 6.00 1.45 6.00 2.93 12.00 1.94 CALLINECTES SAPIDUS 1.00 0.24 2.00 1.46 4.00 0.65 PSEUD 0PLEURONECTES AMERI 2.00 0.48 3.00 0 49 3.00 0 48

=__

STATION TOTAL AND DATE TOTAL 415.00 205.00 620.00

APPENDIX C: 45 7-m SEINE DATA Appendix C is arranged by sampling date.

The catch data are expressed as total specimens captured at a station (NUMBER INDIVS) and percent composition (PCT COMP). The sampling stations are identified by the first three letters of the code:

CDC = Cedar Creek, FKR = Forked River, DBC = Double Creek, and OYC = Oyster Creek. The last letter of the station code denotes day samples (D) and night samples (N).

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= _ _ _

=_

CALLINECTES SAPIDUS 58.00 63.04 50.00 63.04 MERIDTA MENIDIA 2.00 2.17 2.00 2.17 PALAEh0NETES VULGARIS 1.00 1.09 1.00 1.09 OPSANUS TAU 1.00 1.09 1.00 1.09 h*.'6IL CEPHALUS 5.00 5.43 5.00 SA3 hbGIL CUREMA 14.00 15.22 14.00 15.22 CHASHODES BOSOUIANUS 5.00 5.43 5.00 5.43 PARALICHTHYS DENTATUS 2.00 2.17 2.00 2.17 ANGUILLA ROSTRATA 1.00 1.09 1.00 1.09 SYNODUS F0ETENS 3.00 3.26 3.00 3 26 STATION TOTAL AND DATE TOTAL 92.00 92.00 l

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OYSTERCR GEAR-150SEI 14 OCT 80 STATION 0YCN

=- __________.._______

SPECIES NUMBER PCT NUMBER PCT

__{0MP___10TAL COMP lNDIVS CRANG0N SEPTEMSPINOSA 23.00 16.67 396.00 28.55 CALLINECTES SAPIDUS 48.00 34.78 680.00 49.03 MENIDIA MENIDIA 0.00 0.00 83.00 5.98 PALAEMONETES VULGARIS 4.00 2.90 16.00 1.15 FUNDULUS MAJALIS 5.00 3.62 9.00 0.65 OPSANUS TAU 15.00 10.87 47.00 3.39 MUGIL CEPHALUS 9.00 6.52 17.00 1.23 APELTES QUADRACUS 0.00 0.00 1.00 0.07 GOBIOSOMA BOSCI 2.00 1.45 15.00 1.08 POMATOMUS SALTATRIX 1.00 0.72 3.00 0.22 FUNDULUS HETER 0CLITUS 0.00 0.00 2.00 0.14 hUGIL CUREMA 2.00 1.45 9.00 0.65 PSEUD 0PLEURONECTES AMERI 0.00 0.00 2.00 0.14 SYNGNATHUS FUSCUS 0.00 0.00 14.00 1.01 C)PRIN0 DON VARIEGATUS 7.00 5.07 9.00 0.65 CHASM 0 DES DOSQUIANUS 1.00 0.72 5.00 0.36 PARALICHTHYS DENTATUS 2.00 1.45 5.00 0.34 NEOPANOPE TEXANA SAYI 3.00 2.17 16.00 1.15 STRONGYLURA MARINA 1.00 0.72 7.00 0.50 MENIDIA BERYLLINA 0.00 0.00 4.00 0.29 PENAEUS AZTECUS 6.00 4.35 9.00 0.65 ANGUILLA ROSTRATA 0.00 0.00 4.00 0.29 CARAUX HIPPOS 7.00 5.07 7.00 0.50 ASTROSCOPUS GUTTATUS 0.00 0.00 3.00 0.22 TAUT 0GA ONITIS 1.00 0.72 2.00 0.14 ETROPUS MICR0STOMUS 0.00 0.00 1.00 0.07 FAMILY XANTHIDAE JUV.

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l CRANG0N SEPTEMSPINOSA 377.00 77.89 2760.00 88.18 CALLINECTES SAPIDUS 62.00 12.81 77.00 2.46 MENIDIA MENIDIA 15.00 3.10 71.00 2.27 PALAEMONETES VULC RIS 1.00 0.21 113.00 3.61 FUNDULUS MAJALIb 1.00 0.21 9.00 0.29 OPSANUS TAU 0.00 0.00 1.00 0.03 APELTES QUADRACUS 2.00 0.41 17.00 0.54 GOBIOSONA BOSCI 5.00 1.03 25.00 0.80 FUNDULUS HETER 0CLITUS 0.00 0.00 11.00 0.35 PSEUD 0PLEURONECTES AMERI 7.00 1.45 16.00 0.51 SYNGNATHUS FUSCUS 0.00 0.00 1.00 0.03 CYPRIN0 DON VARIEGATUS 1.00 0.21 2.00 0.06 FUNDULUS DIAPHANUS 0.00 0.00 4.00 0.13 CHASMODES BOSOUIANUS 1.00 0.21 2 00 0.06 NEOPANOPE TEXANA SAYI 0.00 0.00 1.00 0.03 STRONGYLURA MARINA 3.00 0.62 3.00 0.10 MENIDIA BERYLLINA 0.00 0.00 1.00 0.03 ANGUILLA ROSTRATA 1.00 0.21 1.00 0.03 TAUT 0GA ONITIS 4.00 0.83 5.00 0.16 ETROPUS HICROSTOMUS 2.00 0.41 5.00 0.16 FAMILY XANTHIDAE JUV.

1.00 0.21 1.00 0.03 OTHER SPECIES 1.00 0.?1 4.00 0.13 STAT".0N TOTAL AND DATE TOTAL 484.00 3130.00 A

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= - - -

- - - =

SPECIES NUMBER PCT NUMBER PCT NUMBER PCT INDIVS COMP INDIVS COMP TOTAL COMP

- - - _ = _ - -

CRANGON SEPTEMSPINOSA 11.00 84.62 234.00 97.91 245.00 97.22 CALLINECTES SAPIDUS 1.00 7.69 0.00 0.00 1.00 0.40 PALAEMONETES VULGARIS 0.00 0.00 3.00 1.26 3.00 1.19 FUNDULUS HAJALIS 0.00 0.00 1.00 0.42 1.00 0.40 APELTES 00ADRACUS 1.00 7.69 0.00 0.00 1.00 0.40 FUNDULUS HETER 0CLITUS 0.00 0.M 1.00

0. 42 1.00 0.40

---z STATION TOTAL AND DATE TOTAL 13.00 239.00 252.00 i

e

OYSTERCR GEAR-150SEI 12 FEB 81 STATION CDCN CDCD

= - -

NUMBER PCT NUMBER PCT NUMBEP PCT SPECIES INDIVS COMP INDIVS COMP TOTAL COMP

=__

- - - - - - - - - - - - = - -

__---=-- =_____- _

==

CRANGON SEPTEMSPINOSA 511.00 99.22 22.00100.00 533.00 99.26 CALLINECTES SAPIDUS 2.00 0.39 0.00 0.00 2.00 0.37 FUNDULUS MAJALIS 1.00 0.19 0.00 0.00 1.00 0.19 OTHER SPECIES 1.00 0.19 0.00 0.00 1.00 0.19

_=

- _ = _ _

- = -

STATION TOTAL AND DATE TOTAL 515.00 22.00 537.00

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1 I

I APPENDIX D:

12.2-m SEINE DATA Appendix D is arranged by sampling date.

The catch data are expressed as total specimens captured at a station (NUMBER INDIVS) and percent composition (PCT COMP). The sampling stations are identified by the first three letters of the code:

CDC = Cedar Creek, FKR = Forked River, DBC = Double Creek, and OYC = Oyster-Creek. The last letter of the station code denotes day samples (D) and night samples (N).

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- = = - _ = = - - -

SPECIES NUMBER PCT NUMBER PCT INDIVS COMP TOTAL COMP CRANGON SEPTEMSPINOSA 161.00 60.75 161.00 60.75 NENIDIA NENIDIA 1.00 0.38 1.00 0.38 PALAEMONETES VULGARIS 15.00 5.66 15.00 5.66 ANCHOA MITCHILLI 25.00 9.43 25.00 9.43 CALLINECTES SAPIDUS 37.00 13.96 37.00 13 96 GOBIOSOMA BOSCI 10.00 3.77 10.00 3.77 HIPPOLYTE SP 2.00 0.75 2.00 0.75 STRONGYLURA MARINA 8.00 3.02 8.00 3.02 CHASH0 DES BOSQUIANUS 3.00 1.13 3.00 1.13 OPSANUS TAU 1.00 0.38 1.00 0.38 LUTJANUS GRISEUS 1.00 0.38 1.00 0.38 OTHER SPECIES 1.00 0.38 1.00 0 38

=

- - - - - - - - - - - = - - - - = - - -

=----------------------

STATION TOTF AND DATE TOTAL 265 00 265.00 s

l

0YSTERCR GEAR-40 SEI 24 SEP 80 STATION OYCD

.--=________

SPECIES NUMBER PCT NUMBER PCT INDIVS COMP TOTAL COMP HENIDIA MENIDIA 21.00 60.00 21.00 60.00 ANCHOA MI1 CHILLI 3 00 8.57 3.00 8.57 CALLINECTES SAPIDUS 6.00 17.14 6.00 17.14 FUNDULUS MAJALIS 1.00 2.86 1.00 2.86 LUCANIA PARVA 1.00 2 86 1.00 2.86

. TRACHINOTUS FALCATUS 1.00 2.86 1.00 2.86 MUGIL CEPHALUS 2.00 5.71 2.00 5.71

__=_.___________

STATION TOTAL AND DATE TOTAL 35.00 35.00

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=-----------------------

_ = - -.

CRANGON SEPTEMSPINOSA 157.00 53.77 3727.00 72.26 MENIDIA MENIDIA 0.00 0.00 370.00 7.17 CRANGON SEPTEMSPIN JUV 0.00 0.00 163.00 3.16 PALAEMONETES VULGARIS 12.00 4.11 138.00 2.68 APELTES OUADRACUS 0.00 0.00 26.00 0.50 CALLINECTES SAPIDUS 87.00 29.79 338.00 6.55 00BIOSOMA BOSCI 14.00 4.79 90.00 1.74 FUNDULUS HETER 0CLITUS 0.00 0.00 52.00 1.01

-FUNDULUS MAJALIS 1.00 0.34 13.00 0.25 MENIDIA BERYLLINA 2.00 0.68 65.00 1.26 CYPRIN0 DON VARIEGATUS 13.00 4.45 35.00 0.60 LUCANIA PARVA 0.00 0.00 27.00 0.52 HIPPOLYTE SP 0.00 0.00 44.00 0.05 MENIDIA MENIDIA JUV 0.00 0.00 2.00 0.04 FAMILY XANTHIDAE JUV.

0.00 0.00 19.00 0.37 TRACHINOTUS FALCATUS 4.00 1.37 9.00 0.17 SYNGNATHUS FUSCUS 0.00 0.00 0.00 0.16 BREV00RTIA TYRANNUS JUV 0.00 0.00 14.00 0.27 MUGIL CEPHALUS 0.00 0.00 4.00 0.03 MEMBRAS MARTINICA 0.00 0.00 1.00 0.02 CHASM 0 DES BOSQUIANUS 1.00 0.34 1.00 0.02 PSEUD 0PLEURONECTES AMERI 0.00 0.00 1.00 0.02 OPSANUS TAU 0.00 0.00 1.00 0.02 LUTJANUS GRISEUS 0.00 0.00 1.00 0.02 MUGIL CURENA 0.00 0.00 1.00 0.02 PEPRILUS TRIACANTHUS 0.00 0.00 2.00 0.04 NEOPANOPE TEXANA SAYI 1.00 0.34 2.00 0.04 HYPORHAMPHUS UNIFASCIATU 0.00 0.00 1.00 0.02 OTHER SPECIES 0.00 0.00 3.00 0.06

_=

STATION TOTAL AND DATE TOTAL 292.00 5158.00

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6 OYSTERCR GEAR-40 SEI 14 JAN 81 STATION OYCD OYCN SPECIES NUMBER PCT NUMBER TCT NUMBER PCT INDIVS COMP INDIUS COMP TOTAL COMP CRatiGON SEPTEMSPINOSA 2.00 16.67 177.00 95.16 179.00 90.40 MCNIDIA MENIDIA 5.00 41.67 0.00 0.00 5.00 2.53 LPELTES OUAPasCUS 5.00 41.o7 5.00 2.69 10.00 5.05 FUNDULUS HETER 0CI_ITUS 0.00 0.00 3.00 1.61 3.00 1.52 NENIDIA BERYLLINA 0.00 0.00 1.00 0.54 1.00 0.51 STATION TOTAL AND DATE TOTAL 12.00 186.00 198.00 e

~

OYSTERCR GEAR-40 SEI 27 JAN 81 STATION FKRD FhRN

- -=----------------

- - - - - = - - - - - - - - - -

SPECIES NUMBER PCT NUMBER PCT NUMBER PCT INDIVS COMP INDIVS COMP TOTAL COMP CRAMGON SEPTEMSPINOSA 16.00 76.19 300.00 31.32 316.00 32.28 NENIDIA MENIDIA 2.00 9.52 0.00 0.00 2.00 0.20 CRANG0N SEPTEMSPIN JUV 0.00 0.00 613.00 63.99 613.00 62.61 PALAEMONETES VULGARIS 0.00 0.00 18.00 1.80 18.00 1.84 APEL1ES OUADRACUS 1.00 4.76 24.00 2.51 25.00 2.55 I

FUNDULUS HETER 0CLITUS 0.00 0.00 1.00 0.10 1.00 0.10 FUNDULUS MAJALIS 0.00 0.00 1.00 0.10 1.00 0.10 MENIDIA BERYLLINA 2.00 9.52 0.00 0.00 2.00 0.20 AMiiODYTES AMERICANUS 0.00 0.00 1.00 0.10 1.00 0.10 STATION TOTel AND l

DATE TOTAL 21.00 958.00 979.00 O

OYSTERCR GEAR-40 SEI 12 FEB 81 STATION CDCN CDCD

~~ ~~~

~~~~~~~

SPECIES NUMBER PCT NUMBLR PCT NUMBER PCT INDIVS COMP INDIVS COMP TOTAL COMP CRANGON SEPTEMSPINOSA 1460.00 98.22 42.00 48.85 1702.00 97.20 PALAEMONETES VULGARIS 3.00 0.10 1.00 1.64 4.00 0.23 APELTES DUADRACUS 23.00 1.36 10.00 16.39 33.00 1.88 CALLINECTES SAPIDUS 0.00 0.00 4.00 6.56 4.00 C.23 GOBIOSOMA DOSLI 1.00 0.06 0.00 0.00 1.00 0.06 FUNDULUS HETER 0CLITUS 1.00 0.06 2.00 3.28 3.00 0.17 MENIDIA BERYLLINA 1.00 0.06 2.00 3.28 3.00 0.17 CHASM 0 DES BOSQUIANUS 1.00 0.06 0.00 0.00 1.00 0.06 STATION TOTAL AND DATE TOTAL 1690.00 61.00 1751.00 l

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