ML20076N023
| ML20076N023 | |
| Person / Time | |
|---|---|
| Site: | Oyster Creek |
| Issue date: | 02/28/1991 |
| From: | J. J. Barton GENERAL PUBLIC UTILITIES CORP. |
| To: | NRC |
| References | |
| C330-91-2068, NUDOCS 9103270041 | |
| Download: ML20076N023 (30) | |
Text
{{#Wiki_filter:__
, e
- s. GPU Nuclear Corporation g .' -- gf Pest Office Box 388 Route 9 South Forked Rwer. New Jersey 087310388 609 971 4000 Wnter's Direct Dial Numbor:
March 16,1991 C330-91-2066 Director office of Inspection and Enforcement U.S. Nuclear Regulutory Commission 475 Allendsle Roa6 King of Tr,'esie, PA 19406 Dear Sir". Subject Oyster Creek Nuclear Generating Sta'. ion (OCNGS) Docket No. 50-219 Important Environmental Event In accordance with the reporting requirements of Section 3.b.2 of Appendix B, Environmental Technical Specifications, encioned is a report of Fishkill Monitoring at OCNGS. If you have any questions or require any additional information, please contact Mr. Barry W. Durham of our Environmental Licensing Department at (609)971-4630. , Very Truly Yours,
'1 /
John J. arton Directo , Oyster Creek JJD/DWD $c Enclosure ec: Direct r Nuclear Reactor Regulation
;_ U.S. Nuclear Regulatory Commission Wachington, DC 20555 CA cn[h _ Document Control Desk QQ- U.S. Nuclear Regulatory Commissien og Washington, DC 20555
, 50 g NRC Resident Inspector st o Oyster Creek Nuclear Generating Station OO O C3 Dureau of Nuclear Engineering NG NJ Department of Environmental Protection c) '3h CA Q % CN 411 Trenton, NJ, 08615 -- GPU Nuclear Corporation is a subschary of General Pubhc Utikties Corporation [hch
- 250089 if ,
c__.- e > , .. WINTER OUTAGE FISH SAMP!ING PROGRAM REPORT FOR THE PERIOD FEBRUARY 1991 CPU Nuclear Corporation j- Oyster Creek Environmental Controls March 1991
.'+ . * .
Executive summary In order to document the effects of the February 15, 1991 shutdown of the oyster Creek Nuclear Generating Station on the fishes in Oyster Creek, an intensive sampling program was conducted by GPU Huclear Corporation. The results of that monitoring effort indicated that an estimated 1,151 fish died due to temperature stress resulting from the station shutdown. Bluefish accounted for 97 percent of the mortalition. A purposefully slow rate of power reduction and concomitant gradual temperature decay appears to have limited cold shock stress and mortality to the species least tolerant of cold shock. It is likely that the majority of the bl6efish died within the discharge canal and did not movo into Barnegat Bay before dying. Four other fish species that had been involved in previous fishkills, including the Atlantic menhaden, were collected in oyster Creek duritig .re-shutdown sampling but were unaffected by the February 15 shutdown. 1
Introduction This report documents the offacts of the February 15-16, 1991 shutdown of I the Oyster Creek Nuclear Generating Station on the fishes in Oyster Creek, ' l based upon sampling conducted by GPU NUM ear Corporation. The major objectives l 1 of the sampling program were: 1
- 1) To determine the species composition, relative abundance and j distribution of fishes in Oyster Creek prior to Station shutdown.
- 2) To quantify the extent of any shutdown-induced morta11 ties. -
Data collection began on February 2 and continued through February 17, . 1991. Oyster Creek Nuclear Generating Station (OCNGS), which had operated continuously since July 4, 1990, began the shutdown process at noon on February 15, 1991. By approximately 0845 hours on February 16, the discharge canal temperature had been reduced from a pre-shutdown temperature of 62'F to ambient temperature of 39'F. Materials and Methoda Pre-Shutdown Surveys 0111 not and bottom trawl samples were collected, at the stations indicated in. Figure 1, on February 2-3, 5-6, 9-10, and 13-14, 1991. All sampling was conducted after dark.
. Bottom trawl samples were collected at five locations in the discharge canal' east of the Route 9 bridge, including the length of two_of the residential lagoons. Trawling was done with a 4.8 m semiballoon trawl with a 3.9 cm stretch mesh body, a 3.2 cm stretch mesh cod end and a 1.3 cm stretch mesh liner. One five minute trawl sample was taken at stations T1, T4 and T5 during each sampling period. At stations T2 and T3, the trawl _
was dragged the length of the residential. lagoons (Fig. 1). 2
._ . -- . _ - . - . . ~ _ - - - . ~. - _. ... - . - . s At gill not stations c1, G2, G3 and c4 (Fig. 1), samples were l
collected with a 60 x 2.4 m monofilament net consisting of two 30 m panels .l l of 3.9 and 8.5 cm stretch mesh. ! l All fish captured were identified and enumerated; the length range of spocimens of each fish species was determined. l surface and bottom temperature and salinity measurements were measured with a Beckman salinometer concurrent with each trawl and gill not sample. Hook and line sampling was the most successful method of capturing the , most abundant species, the bluefish, as well as certain other species resident near the condenser discharge prior to shutdown. Ilook and line sampling was also used to identify the species of fish observed schooling near_the 30" discharge pipe prior to the shutdown. Durino and Post-Shutdown Surveve Post-Shutdown Trawling - one five-minute bottom trawl was conducted with the trawl described above at trawl stations T1, T2, T3, T4 and T5 between 1050 and 1230 hours on February 16 and again on February 17 from'1100 to 1230 hours. Additionally, ten-minute bottom trawl samples were conducted between 0925 and 1015 hours on February 17 at trawl stations T6, T7 and TD, which were located in Barnegat Bay immedaately east, south and north of the mouth of Oyster Creek, respectively. All fish captured were identified and enumerated; length ranges were obtained. Dipnetting - Dead and stressed fish were collected with dipnots along the banks of the discharge canal, from the condenser discharge to the mouth of Oyster Creek. All fish were identified to species and enumerated; length ranges were obtained. S 3 ,,__ ._ - - . _ . _ _ . . , _ . - - - , , _ . _. ._ . , , ~. _. ._- - _ . ~
.- -- .-- ,. - .- - - - - . - _ _ - - - . ~ - - , - ~ ~ . - - . _ - . - ~ _ _ .
1 Post-Shutdown, Diver Survgr A " hardhat" diver survey was conducted following station shutdown to determine the species composition and abundance of fish which sank to t he I bottom uf the discharge canal after death. A total of 19 transects were r 1 conducted between the OCN05 discharges and the mouth of Oyster Creek, including two transocts within residential lagoons (Figo. 2 and 3). l Transects D7 through D19 were sampled between 0830 and 1600 hours on i
. February 16. Transects D1 through D6 were sampled between 0000 and 1205 hours on February 17. All fish within an arm's length of the diver were identified and enumerated. For the only species found in abundance, bluefish, the number of individuale per square foot along each transect was determined. These densities were used to estimate the number of bluefish .
on the entire canal bottom from the OCNGS discharges to the mouth of Oyster Creek. Results and Discuenlon pre-Shutdown Trawlino and 0111 Netljag The initial survey of the floh fauna of Oyster Creek on February 2-3 yielded a total of-1,537 fish comprising 20 species. The species of interest with respect to a' possible fishkill based upon previous cold-shock experience included bluefish, Atlantic menhaden, white perch, black sea. bass and Atlantic-herring. Their abundance and sire range as well as that of.other species captured at the various stations are indicated in Tables 1 and 2. Water semperature in the discharge canal during the February 2-3 sampling event ranged from 44.9 to 50.2*F (7.2-10.1'C), while salinities within the canal ranged from 21.0 to 21.9 ppt. (Table 3). 4
.. . _ . , . ,_._ _-- _, _ _ _ _ _ . _ _ _ _ , _ . ____ _ . . _ . _ _ . . . _ _ . _ . . . ~ _ _ . _ . . . _ . _ . - . _ ,
s
- The second survey of the fish fauna of Oyster Creek was conducted on February 5-6, 1991. The sampling effort yielded 296 fish comprising 18 species (Tables 2 and 4). The species of interest with respect to a possibin fish kill included bluefish, menhaden and striped bass.
Water temperature in the discharge canal during the campling period ranged from SC.4 to 50.7'r (10.2-11.5'C), while salinities ranged from 22.1 to 23.7 ppt. Bluefish appeared to be concentrating in the warmest water, in the , eastern-most portion of the condenser discharge. Twelve large bluefish were captured at gill not station 03 during the February 6 sampling ef fort (Table 2) and an additional 23 bluefish were taken by book and line at the condenser discharge (Table 5). Bluefish were ewimming deeply in the eastern-most condenser discharge, and wars not observed near the surface. The third pre-outage fish survey was conducted on February 9-10, 1991. The saaspling effort yielded 1,063 fish comprising 22 species (Tables 6 and 7). The species of interest with respect to a possible fishkill 1 included bluefish, 'kaden, speckled seatrout, str iped bass and northern kingfish. Water temperature in the discharge canal during the third sampling period ranged fron 50.7 to 52.3*r (10.4-11.3*C), while salinities ranged from 22.1 to 22.7 ppt. The fourth and final fish survey before the plant shutdown was
-conducted on February 13-14, 1991. The sampling effort yielded 374 fish comprising 20 species. The species of interest with respect to a fishkill included bluefish, menhaden, epeckled seatrout and striped base (Tables 7 . and 8). Water temperatures in the discharge canal during the February 5
\
13-14 sampling period ranged from 47 to 49'T (0.1-9.2'C), while salinities ranged from 21.5 to 22.1 ppt. Based upon the results of these pre-shutdown sampling afforts, our observations of fish in the discharge canal, and our historical data base on finakills, it was concluded that there were three fish species at risk of cold-shock that were present in relatively large numbers: 1) several hundred bluefish. 2) several hundred to a few thousand striped bass, and 3) a few thousand Atlantic menhaden. Durino and Post-rhutdown Survovs station-shutdown commenced at approximately 1200 hours on February 15, 1991 when ambient water temperature (condenser intake) was approximately 41*F.
- Condenser discharge temperature et that time was approximately 62'T and the
. Route 9 bridge temperature, 52'F. In order to minimize the impact of stition shutdown on the fishes in the discharge canal, CPUN developed a power reduction plan"which controlled the effluent temperature reduction at the main condenser discharge at a rate of approximately l'F per hour. This rate of temperature change is approximately one fifth the rate which is typically utilized to acclimate fish to laboratory conditions and represents a power reduction scenario' lasting approximately twice as long as normal station shutdown. The plan also called fo shutting the dilution pumps off early in the shutdown process in order to further minimize the rate of temperature decay in the discharge canal. The relatively slow and uniform reduction in power brought CCNGS condenser-discharge temperature down to ambient levels over a period of approximately 20'houro. As a result of the two operating dilution pumps being taken out of service sequentially at 1149 and 1417 hours, the canal temperature, as measured at the Route 9 bridge, increased stepwise twico 6
. .~ _- . . - - . . . _ . . . _ - - _ = - . . s between 1200 and 1700 hours and-then slowly decreased (Fig. 4). Water temperature in tha condeneer discharge area, unaf fected by dilution pump activity, continued to decline duriel that period. At approximately 0900 hours on February 16, the entire discharge canal had reached ambient temperature of about 39'F.
During the early hours of the shutdown process on the afternoon of February 15, hook and line sampling indicated that bluefish were sti?1 tightly concentrated in the eastern condenser discharge bay, swimming close to the bottom. As the shutdown process progressed through the late afternoon and evening hours of February 15, thera was no. visible evidence of stressed fish in j the condenser discharge or anywhere else in the discharge canal. Large numbers of bluefish were observed swimming closer to the surface of the eastern-most condenser diecharge bay during the early morning hoars of February 16. A total of 93 bluefish were collected from this area between 2200 to'0500 hours by dipnet or hook and line. By 0500 hours, the condenser discharge temperature had decreased to 43*F and the apparently stressed bluefish began to disperne and move.away from the eastern portion of the condenser discharge. The bluefish continuod moving further westward and downstream, with many being observed at 0530 hours near the eastern side of the peninsula between the condenser and dilution discharge structures.
- Between 0630 and 0800 hours, water temperatures were observed to be e
approximately 1.5'F higher near the dilution discharge structure than at the condenser discharge and the bluefish appeared to have been attracted by_this b pocket of warmer water. These fish were several-, stressed and 300 were i dipnetted from this area during this 1.5 hour period. Further downstream, several local fishermen dipnetted a total of 47 bluefish from the discharge canal at the Route 9 bridge between 0630 and 1000 7
.. . j hours. _GPUN workers in a small boat dipnetted 52 bluefish between 063^ and 0800 hours, plus an additional 91 bluefish between 0800 and 1000 urs, from
]
I i the discharge canal west of Route 9. An additional 22 dead bluefish were ; collected from the discharge canal banks and areas east of Route 9 between 0800 and 1700 hours. Stressed and dead fish were also collected by GPUN personnel walking along the banks of Oyster Creek, out to Barnegat Bay, between 0800 and 1700 hours on February 16. Three bluefish were collected from the 30" discharge pipe area and the south bank of the discharge canal, and 10 were taken along the north canal bank. An additional 5 bluefish were collected at the mouth of Oyster Creek along the north shore beach. Four bluefish were also dipnetted by the consultant conducting the trawl surveys between Route 9 and the mouth of Oyster Creek. Thus, it was apparent that the vast majority of the stressed and dead fish were collected near the plant with gradually decreasing numbers observed in areas further downstream. In addition to the bluefish, small nunbers of ; dead or stressed spot (20 individuals), speckled seatrout (11), smooth dogfish (3), weakfish (1), northern kingfish (1), and Atlantic herring (1) were found along the banks, primarily west of the Route 9 bridge. The dead and stressed bluefish collected ranged from 250 to 875 mm (9.75 to 34.5 inches) in length. Post-Shut;down Trawl Sgryeve Post-shutdown trawl surveys were conducted on February 16 and 17 at the same five stations along the discharge canal at which pre-shutdown trawls had been~ conducted. Three additional post-shutdown trawls were also collected February 17 in Barnegat Day immediately outsida the mouth of Oyster Creek (Figure 1). Only one additional stressed bluefish was 8
. s l
collected (at station 72) during the post-shutdown trawling, confirming that few stressed or dead fish had moved east of Route 9. The Atlantic menhaden, a species which has been susceptible to cold shock during previous winter shutdown evente, did not appear to be affected by the February 15 shutdown and were collected alive in small numbers during the post-shutdown trawlir.J. Likewise, the 14 other species collected during post-shutdown trawling showed no apparent signs of cold shock (Tables 9, 10 and 11). Post-Shutdown Diver Surveve A total of 19 diver transects were conducted between the discharge structures and the mouth of Oyster Creek. The diver survey began at 0830 hours February 16 and the last transect was completed at 1220 hours on February 17. All but five of the 34 total fish observed by the diver were bluefish, corroborating that bluefish was the predo,ninant species involved in this fishkill (Table 12). Only one of the dead bluefish observed during the diver transects was located east of Route 9, with the majority of cold shock deathe occurring between the discharge structures and the trestle bridge. In addition to the bluefish observed by the diver, one speckled seatrout (Cynoscion nebulosus) was collected slightly upstream of the trastle bridge. The other four dead fish observed were single specimenn of winter flounder, American eel, silverside and uenhaden. Because the latter four specimens were all collected immediately downstream of the screenwash discharge pipe near the dilution discharge, they are thought to have boon discharged f rom the screenwash pipe f ollowir.g impingement on the traveling screens : or than being victims of cold shock following OCNGS shutdown. 9 l _ _ - _ _ . _ . _ - _ _ _____-_- _ _ _ _ _ _ _ _ _ _ . _ - _ _ - . _ _ _ _ _ _ _ _ _ _ _ = _ ____
t o For'the.only spectos found in abundance, bluefish, the number of individuals por square foot along each transect was determined. These 3 densities were used to estimate the number of bluefish on the entire discharge canal bottom from the OCNOS dischargo structures to the mouth of Oyster Creek. A total of 509 dead bluefish were calculated to have fallen to the bottom of the discharge canal (Tablo 13). During their diving activity on February 16, the divers observed fish including striped bass swimming in the vicinity of the 30 inch dischargo pipe, just downstream of the condenser discharge. These fish scattered as ; the diver approached indicating that they were not adversely affected by the station shutdown. Conclusionu i
. Pre-shutdown surveys of Oyster Croek indicated the presence of a wide variety.of fish specios including six species that have been involved in past shutdown-related fishkille (i.e., bluefish, blueback herring, Atlantic menhaden, northorn kingfish, white perch and bay anchovy). Thoso surveys, conducted over the two week period immediately prior to the station shutdown, revealed that the number of species and abundanco of most species in the discharge canal remained relatively uniform. Largo numbers of bluefish, and lessor numbers of speckled seatrout and stripod base were noted during this period near the station dischargos. Further downstream in the discharge canal, blueback herring was the species found in the greatest abundance during pre-shutdown surveys.
The station shutdown sequence resulted in a gradual reduction of condenser 1 discharge temperature at a rate of about l'F per hour. This relatively slow and uniform decreaso in the temperatur) of the OCNGS heated offluent to which 10
L
- the fish were exposed was apparently beneficial in limiting the extent of the fishkill to those species most susceptible to cold shock.
Most bluefish did not appear to be severely stroesed until several hours after initiation of stestion shutdown when the condenser discharge temperature ( had been reduced from 62'F to about 45'F. They then began to die rapidly, especially near the dilution discharge, after a pocket of relatively warm and calm water to which they were atttacted had cooled significantly. Based upon the diver survey, an estimated 509 bluefish died and sank to the bottom of the discharge canal. An additional 605 individuals of tr ia species were dipnetted, resulting in a total of 1,114 bluefish. A total of 37 dead or stressed individuals of 6 additional species were found following the shutdown. Striped bass, Atlantic menhadon, blueback herring, white perch and bay anchovy were not adversely af f ected by the February 15-16 station shutdown even though all but the striped base have been involved in previous cold-shock related fishkills. In summary, the number of fish involved in the *ishkill of February 15-16, by species, was Jollows: bluefish 1,114 (actual count & estimate from diver surveys) spot 20 (actual count) speckled seatrout 11 (actual count) smooth dogfish 3 (actual count) weakfish 1 (actual count) northern kingfish 1 (actual count) Atlantic herring 1 (actual count) TOTAL 1,151 11
w . W
~
Table 1. Wtm6ers of fish caught in pre outage trawl canptes in Oyster Creek on February 2,1991; range of tengths in mit1imeters in parentheses. STATioni SPECIES T1 T2 T3 T4 T5 , Psetzfooleuronectes americanus 9 (79-228) 1 (102) 1 (160) 7 (95-242) '56 (95-200) Tautoga onitis' 1 (85) 0 0 1 (115) 0 > Atosa sestivatis 47 (75-91) 1,147 (77-143) 133 (78-96) 2 (80-90) 0 Alosa pseudoharenous 0 3 (105-115) 2 (105-120) 0 0 Apettes cuadracus 4-(46-54) 5 (41-50) 6 (37-50) 0 0 Anchoa mitchitIi 1 (46) 0 0 0 0 Etrocus microstomus 3 (47-110)' O O O- 9 (43-102) Paratichthys dentatus 1 (145)' 1 (214) 0 0' - 3 (200-220) Conner oceanicus 2 (260-370) 0 0 0 0 Prionctus carolinus 8' O O O 1 (103) Morone amerleana 0 3 (112-134) 12 (121-132) 0 0 Brevoortia tyrannus 0 3 (60-121) 33 (103-146) 0 0 M=nidia menidia 0 1 (98) 7 (52-94) 0 0 ottidian marginata 0 0 0 0 6 (164-220) Ftndutus beteroctitus 0 0 1 (121) 0 0 Anouitta rostrata 0 0 1 (200) 0 0 ; uroohycis regia 0 0 0 0 2 (93-102) Synonathus fuscus -0 0 1 (110) 0 0 schoeroides maculatus 0 0 0 1 (152) 0
,. s . - --
r s - C
,4.
Tabte 2. Nursers of fish coucht ;in pre-outage gilt net sagtes in Oyster Creek on February 2 and
' February 6,1991; range of tengths in e:lttimeters in parentheses. ;
.il February 2.-1991 STATIDst SPECIES G1 C2 C3 G4-Brevoortia tyramus 229 (125-133) 24 (122-290) MET LOST 0 4
Pseudopteuronectes americanus 1 (95). 3 AFTER 0 Atosa pseudoharenous 0- 1 (146). LlwE PARTED 0 Clupea harenaus 0 0 1 (ECT MEASURED) February 6. 1991 STATION SPECIES G1 G2 C3 'A Brevoortia tyramus 23 (110-170) 16 (123-292) 0 1 (156)
- Atosa oestivatis 1 (105) 0 0 0
- Merone americana 4 (123-142
- O G 0 j Pomatomus sattatrix 0 0 12 (369-r.43) 1 (480)
I e I' 4 4
.~- - -
.-e , . - , , , .
e z f' '+ Table 3. Oyster Creek discharge canni surface and bottom temperature ("F)and salinity (parts per thousand) during pre-shutdown and post-shutdown surveys, February 1991.- . DATE STATION FEB. 2-3 FEB. 5-6 FEB. 9-10 FEB. 13-14 FEB. 16 FEB. 17 TEMP. ' TEMP. SALINITY TEMP. SALINITY TEMP. SALINITY TEMP. SALINITY TEMP. SALINITY SALINITY' (*f). (Ppt) {*f) (ppt) (*f) (ppt) (*f) (ppt) (*f) (ppt) (*f) gppt) T?. ' SURFACE 48.8 21.4 49.6 22.7 51.8 22.2 48.2 21.3 38.8 22.1 34.3 20.5 BOTTOM 49.1 21.3 50.5 23.7 51.8 22.5 .48.4 21.7 38.8 22.9 35.4 22.9 j T2 SURFACE 47.1 21.1 50.4 22.2 50.7 22.1 46.6- 21.7 41.9 23.6 35.1 20.9 BOTTOM 44.9 21.0 50.4 22.6 51.6 22.6 46.6 21.7 41.9 23.6 38.3 22.7 T3 SURFACE 48.2 21.0 51.6 22.2 51.1 22.4 47.8 21.6 41.9 23.5 34.9 20.5 BOTTOM 48.4 21.0 51.4 22.4 51.4 22.7 47.8 22.0 41.9 23.3 37.8 22.0 1 T4 SURFACE 50.0 21.0 52.0 22.1 52.0 22.4 48.4 21.9 37.0 23.5 35.1 21.1 BOTTOM 49.6 21.0 52.7 23.3 52.2 22.2 48.6 22.0 36.5 23.1 34.9 -21.8 T5 SURFACE 50.0 21.8 52.0 22.4 51.8 22.3 48.0 22.0 35.1 22.0 33.4 20.3 BOTTOM 50.2 21.9 52.0 22.5 52.0 22.2 48.0 21.9 34.7 24.1 33.3 22.2 i ~ T6 SURFACE - - - - - - - - - - 32.4 22.9 BOTTOM - - - - - - - - - - 32.2 24.1 T7 SURFACE - - - - - - - - - - 33.4 23.5-BOTTOM - - - - - - - - - - 33.4 23.7 T8 _ SURFACE - - - - - - - - - - 32.7 23.1 BOTTOM - - - - - - - - - - 32.7 23.8 i G1 SURFACE 49.3 21.0 51.4 22.2 51.6 22.3 48.4 21.7 - - - - i BOTTCM 48.9 20.9 51.4 22.3 51.6 22.2 48.4 22.2. - - -- -
.I -
! G2 SURFACE 49.6 21.3 51.8 22.2 51.8 22.1 48.4 22.0 - - - - BOTTOM 49.8 21.2 51.4 22.2 52.2 22.2 48.4 22.1 - - - - f G3 SURFACE 59.2 - 63.9 23.1 63.7 22.6 60.4 21.7 - - - - BOTTOM - -' 63.9 23.1 63.7 22.6 60.4 21.7 - ' - - - l G4 SURFACE 59.2 . 63.9 23.1 63.7 22.6 60.4 21.7 - - - - .; BOTTOM - - 63.9 23.1 63.7 22.6 60.4 21.7 - - - - l
.y
- C Table 4. Nurbers"of fish caught in pre-outage trewt sanptes in Oyster Creek on February 5,.1991; range of tengths in
- millimeters in parentheses.
STATION SPECIES T1 72 T3 T4 T5 Pseudocteuronectes americanus 7 ( % -115) 0 0 6 (112-121). 47 (101-200) Atosa pestivalis 0 94 (72-103)' 1E (76-86) 0 0 Atosa pseudoherennus 0 .1 (116). 0 0 0 Anettes ausdracus 0 0 2 (41-44) '2 (52-67) O Etropus microstomus 1 (92) 0 0 0 6 (46-100) Paralichthys centatus 0 0 0 0 3 (125-215) Morone americana 2 (140-158) 2 (115-119) 0 6 0 22-180) O Brevoortia tyrannus 0 3 (105-118) 0 0 0 00hidion marginata 0 0 0 0 4 (185-210) Urorhyces regia 1 (95) 0 0 0 1 (152) Syngnathus fuscus 1 (275) 0 0 0 0
$ccohthalmus aquosus 1 (280)' 0 0 0 0 Cobiosoms bosci 0 0 1 (42) 0 0 Trinectes maculatus 0 0 0 1 (136) 0-cosanus teu 0 0 0 1 (120) O Svmphurus etagiusa 0 0 0' O- 1 (100)
- b Table 5. Nunber of fish caught by hook arxi line in the condenser discharge of the Oyster Creek Huclear Generating Station on February 3, 5,- 7, 9 and 13, 1991; range of lengths in mittimeters in parentheses.
SPECIES February 3 February 5 February 7 Fe W ary 9 Februery 13 Pomatomu_s sattetrix 20 (35G-910) 23 (374-748) 18 (220-370) 5 (445-920) 15 (270-635) Morone saxatitis 0 3 (482-518) 28 (350-450) 39 (355-558) 5 (405-560) Morone americanus 0 0 2 (268-279) 0 0 Paratichthys dantatus 0 0 9 (278-282) 0 0 i Menticirrhus saxatitis 0 0 1 (300) 0 0 Cynoscion nebutosus 0 0 0 5 (480-525) 2 (525-530) I 1 t s- T ">m _ __ w
.o.-
r Table 6. Ntsrbers of fish caught in pre-outage trawl sancies in Oyster Creek en February 9,1991; range of lengths in miitimeters in parentheses. STATION SPECIES T1 T2 T3 T4 T5 Pseudopteuronectes emericanus 7 (95-125) 2 (116-125) 0 35 (97-178) 34 (97-135) Tautoga onitis 0 0 0 1 (125) 0 Atosa sestivatis 0 437 (76-90) 156 (75-102) 0 0 Atosa psetdoharenaus 2 (92-102) 0 0 0 0 Apettes quadracus 1 (43) 10 (40-52) 13 (36-55) 3 (42-58) 1 (48) Etreous microstomus 0 0 0 0 3 (97-110) Paralichthys dentatus 0 0 0 1 (190) O Prionotus carolinus 1 (70) 0 0 0 0 E cne ameriesna 3 (105-115) 0 0 2 (135-161) 0 Brevoortia tyrannus 2 (42-305) 0 3 (83-122) 0 0 Menidia menidia 1 (112) 4 (72-97) 7 (70-130) 0 0 cphidion marginata 1 (150) 0 0 0 1 (160) uroobycis regia 2 (82-135) 0 0 2 (140-170) 3 (92-128) Synonathus fuscus 0 0 0 3 (138-169) 0 Gobiosoma bosci 1 (56) 0 1 (45) 0 0 Funchlus maialis 0 0 1 (140) 0 0 i urocitycis chuss 0 0 0. 1 (161) O Scoothatnus acuoses 0 0 0 0 1 (220) e
r Table 7. Nunbers of fish caught in pre-outa;3e gilt net sanples in Oyster Creek on February 9-10 and
' February 13-14, 1991; range of tengths in mittimetets in parentheses.
l February 9-10, 1991 STATION I i G1 G2 G3 rA SPECIES 255 (123-144) 0 0 Brevoortia tyrannus 9 (123-140) 1 (96) 0 0 Pseudopleuronectes americanus 0 1 (161) 0 0 Morone americana 2 (161-181) l I 1 (?) 0 0 Menticirrhus saxatitis 0 l t l February 13-14. 1991 f l STATION C2 G3 G4 SPECIES G1 3 (118-136) 95 (121-316) 0 1 (155) Brevoortia tyrannus Atose maoidis,ima 0 0 0 1 (170) Morone wricana 0 0 3 (261-280) O 0 0 2 (340-505) 2 (405-430) Pomatmius sat tetrix 0 0 0 Fundutus malatis 1 (143) 0 1 (340) 0 Tautoga onitis 0 l
y. I Tabte 8. - Ntsrbers of fish caught in pre-outage trawl samples in Oyster Creek on February.13,1991; range of lengths in siitimeters in parentheses. STATION' SPEC!ES T1 T2 T3 T4 T5 Pseudopleuronectes americanus 7 (63-233) 1 (100) 0 3 (108-174) 23 (82-299) Astroscocus cuttatus 'O O 0 0 1 (123) Atosa sacidissima 1 (195) 0- 0 0 0 Atosa sestivatis 0 73 (71-%) 84 ($2-97) 4 ( 74-85) 0 Acettes cuadracos 0. 2 (?4-60) 1 (57) 0 0 Errocus mierestenus 3 (76-102) 0 0 0 5 (42-100) Paralichthys dentatus 0 0 0 0 2 (195-230) Moror.e awricana 0 0 0 1 (163) O Brevoortia tyrannus 0 0 2 (44-93) 0 0 Menidia menidia 0 2 (72-100) to (81-112) 1 (92) 0 of idion marginata 0 0 0 0 2 (155-230) Orcohycis chuss 1 (193) 0 0 0 0 Urochvcis reefa 0 0 0 0 3 (129-138) Syngnathus fuscus 0 0 0 -0 1 (175) Menidia beryttina 0 0 10 (52-63) 0 0.
Table 9. Ntsnbers of fish caught in post-outage trawl samples in Oyster Creek on February 16, 1991; range of lengths in mittimeters in parentheses. STATION SPECIES T1 T2 _ 73 f4 T5 Pomatomus saltatrix 0 1 (485) 0 0 0 Pseudopleuronectes americanus 0 1 (93) 1 (138) 1 (344) 0 Atosa aestivatic 0 81 (77-88) 5 (80-88) 1 (79) 0 Atosa pseudohorenaus 0 0 7 (99-124) 0 0 Apettes gua+ ecus 0 0 2 (42-52) 2 (45-51) 1 (52) Anchos mitchilli 0 1 (85) 0 0 0 Brevoortia tyrarms 0 1 (54) 0 0 6 Menidia menidia 0 99 (70-143) 2 (90-92) 0 0 Menidia beryttira 0 0 7 (48-61) 0 0' Gasterosteus acuteatus 1 (66). 'O O O O cp rinodon varicoatus 0 2 (33-45) 0 0 0
, ~ . .
~ ' Inble 10. Numbers of fish caught in post-outage trawl sanples in Oyster Creek on f ebruary 17, 1991; range of lengths in 1 mit1imeters in parenthese- I STATION T3 T4 T5 T1 T2 SPEC 1ES 1 (162) 1 (320) 0 1 (106) 0 Pseudrmieuronectes americanus 0 0 0 Tautogs onitis 1 (93) 0 89 (88-100) 9 (70-202) 0 Atosa aestivatis 573 (80-190) 365 (87-93) 0 2 (94-112) o Atosa pseudoharengus 10 (98-123) 5 (104-120) 0 0 0 1 (41) 0 Arvttes Quadracus 0 1 (151) O Dorosoma cepedianum 0 0 26 (79-130) 5 (90-117) 0 Brevoortia tyrannus 53 (88-175) 53 (112-143) 532 (66-99; 62 (7&-138) 0 Menidia menidia 37 (67-11/> 37 (64-147) 0 0 0 1 (274) 0 Scoothalmus acuosus 0 17 (98-153) 0 Atosa snoidissima 29 (92-163) 1 (96) 0 0 0 Anunodytes americanus 1 (121) 0
a Tante 11. Ntsrbers of fish caught in post-outage traut sa gtes in Barneget Bay near the south of Oyster Creek on February 17, 1991; range of lengths in mittisete.1 in parentheses. STATION SPECTES T6 T7 T8 Atosa saoidissima 0 0 1 (126) Atosa sestivatis 0 1 (91) 0 Apettes cuadracus 0 1 (48) O Mmidia menidia 1 (64) 1 (93) 0
ek g i m O O O O O O O O O O O O O O O O O O el e aw b E8
- t
- A, w
E
,g O O O O O O O O O O O O O O O O O O el e g
2 5_. b 5 e' 2 4e w 6 4- t ~5 f G O O O O O O O O O O O O O O O O O el e s t: 4 3fs Iu CD
^
t 5 L 8 4
. ge O O O O O O O O O O O O O O O O O O ej e 8 t
- u_g t 38 t 1 e r 6
m
$ v b a 88
) -
t-{ M k yg O O O O O O O O O O O O e O O O O O Og e b 5U T> U G k$ u b t - e :
- . T-h 4 c
~
~ 2*
O + ' O O O t= O O O O e N mN @ 4 e 4 st N e O e b r I'- e i A a 2 h { [ 522^d280 8t$55$$$$$$$
o , l li. ' Table-13. Estimated number of dead bluefish in'OCNGS discharge canal following February 15, 1991 shutdown based on diver transects. CANAL SECTION BLUEFISH MORTALITY ESTIMATE 1 (condenser discharge area) 3 2 (dilution dischargo area) 7 3 (0 to 150 feet downstream 29 of- discharge structure) 4 (between 30 inch discharge 49 pipe and trestle bridge) 5 (between trestle bridge 135 and Rt. 9) 6.(East of Rt. 9) 286 TOTAL = 509 h 1
.--,e -
,4 - -- ~ ......: , c..m. m ,y r- -
-m ,
l ! TEMPERATURE PROFILE AT OCXGS FEBRUARY 15-16,1991
- 25 C 65 - 0 ,
N l coNoexs aotsciunc8 _ D t T % E E 60- %_ N M -s N - 20 g p K \
*s E
E route o Barnch ' R R 55 - 'N A pst m X D T ~ 'x - 15 E U Dis \ L R 50 - N T E 's A N \ D T E 45- ( -10 g s N-4 - D CONDENSER INnKE 1 R A E E ' cpi cs4 G E 40- ' ' R S - -7 -
- 5 E F v S l
35 -
\ CONDENSER DELT1 T F
- 0 l 30- I I i I I I I I
18FEB91:06:00 16FEB91:11:00 16FEB91:16M 167EB91:21:00 15FEB91:10:00 15FEB31:15:00 15FEB91:20-00 16FEB91:01:00 FIGURE 4. TEMPERATUIE DECAY IN OCNGS DISCHARGE CANAL, FEBRUARY 15-16, 1991. (s NOTE: DILUTION PUMPS #3 & #1 WERE TAKEN OUT OF SERVICE ON 2/15/91 AT 1149 & 1417. RESPECTIVELY. CIRCUIATING WERE TURNED OFF ON 2/16/91 AT 1232 & A242. RESPECTIVEIX, WITH #2 & #3 OFF-LINE ON 2/17/91 AT 1116.
, e. g3 4=
Figure 1 N Y b4 0 % o 5 4' Middle Branch
=
Forked Filver
~ #
/ r( y G4
( o gs nxam y, . rook U'f - 6 13-DIVER * * "'
' OT7 TRANSECTS T 7T2 BETWEEN OCNCS y AND RT. 9 (SEE 2 FIGURES 2 AND 3) ,
,,I , i f
,' L^ Sarnegal Day
- L Q.
g . I E ContinuousTemperature Recorders l 3 cab 1/3 in.31000f t. 9 Trawl Station y- , & Gillnet Station i DiverTransect l 4
. -. .. . - -. .. . . . . - . - .~ = . - . .
.f ;un;- 'i,6
-FIGURE'2? ~
i s.
,, w '
o
. D1 .w
[ D15l6 -,
- l --
l-l
.D14 18 -y ~,3. u .se 7 " ~
]-t.i ' D18 D13'
.. -1
.; -ji. i 8 i)
=
1 w
-)', ..
.g *"'"
g .
~ ~: l 7 I) ;
W*s'/,a.m!'4, s, 3i p*. t ^ e 9, l t_ f
., + ! -
s y %; -.
... . . .r;.J . . D19 w .N
\ l
% f4 .
I; 4 ,,
,,... , a. ....a i
,'W
.T '"
./ -/
g s
\ .,,, I D11- 'i ,
;orau.a
- l .,j i' s .
. / m,.,
.%m g pg,,,,
4 w.,, .,, . 1
; l; .
p [ Dip i . FeJ r.
..x/ ,~
g
~
.g '
/..,; , .,. a//{0 y,Ik 1
- ,'~
Q 3 f ;j
. wg /,. Mgx
. x ;xi irl s
l-v i
.. g / '
./ / . . Y '* ,
.[ j .I ,I
--39 L, i l
, .,.. ,s
** '~
f
'. , ~ .
./
.. D81 ; s 1 . ,,./
y
,~
- j , . , .
~'b-J%, " ..
1 Ci;,,y yA '.O, ,,
?.
, d~~~ p- - GNW'I Y ^
D7 ..~. ., .-
/ '
- " l0#
r
.,y c. w Lree.a' fg /- ^ , ! tw ~~~ ..
% :4 !atas,, h ;.mi:. pr
*~-
~~
"Da,,. , p ~.. = =.z.
fk - . . . . ' ~ - - i
~4L'; ,,,"' .- ~ . .- . -
l", ... nt
,, - - , .n.,, s , , . e . - - , .
y g g.? ~ M
- 4
- /i
, 4
. L U4 rjN*N w
.o.
. y g 4% .
._gggf ,'r a
91 -
. 16 - .'
i y.
=,.
n\3 8 \ y.
> y ,/ 5 \-
. s r \
a i - h , p,esat ^y W,s, g , ,, . .T . \ \ 0p~/ / r, e . x
}. ', *} Di.
,' ~ /- m\ -
to=
* ' *,.W #c . .
./g -
,U4 ~*v x
/
/ /~.'y / /
s~
'% \g . -
s
. < /
,.. 4 ** ,
A , 4
'lh% ,
f , , . *
*v /wa#
t etargy , -
^
1 d D W'; ;" . yI +l!_L gf ' Crd ~ o~' -
, . ,s.,"a 4
% s f.sv 4- ,
p . * . am' h s
. hsf ,
V 1 ~ . .* . ..* \* V.f ~ x, . 4 4 40 fttv tr ag- s ..
-' 43, / $14 <
- 4 4
s ) ' . V
- t. $
- ~
q.ri m.
' ~
/_(# 49$* ..
*WM4405 I .
g e V". i-N .
. . i
. ,, . % m ge , .
~. i e 6
, 3 N w, N
5,
- d. * -
<t
'g #
fan~wl,. I ., I
, .. '4 E.
s u g..
- e , .. . #,'y g
'g g
#6eV'A ** '
- LL}}