ML20079N395
| ML20079N395 | |
| Person / Time | |
|---|---|
| Site: | Clinton  |
| Issue date: | 11/11/1991 |
| From: | ILLINOIS POWER CO. |
| To: | |
| References | |
| RTR-NUREG-1437 AR, S, WM, NUDOCS 9111110201 | |
| Download: ML20079N395 (20) | |
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UTILITY b n oi s o tu e r o en o c,n s{
- SITE C lin +on Pe u ce 34.n.t-l n ,
ENCLOSURES & n. (; w a r s b n ,, < s l-; n n s e
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Attachment 1 i
,' tilinois Power company's Response to the industry survey in Support of License Reaeval e R*slomaking VASTE MANAGEMENT QUES!I01ib j This portion of the questionnaire is designed to gather information about the i vaste managesent practices in use today, as well as those techniques, practices and programs which may be planned, taking into consideration the High Laval Vaste Repository and facilities devolcped pursuant to the Low Level Radioactive Waste Policy Amendarnes Act of 1985. The information is relevant to both the rammining period of the current operating licensa and for the Itcensa raneval period. Sines several of the questions concern projections into the renewal term (an additional 20 years beyond the original licensing tars), utilities which have not yet considered license renewal may not be able to ansvar these questions. Most questions should be answered in 2 or 3 sentences; sene may take a few paragraphs.
One survey form should be completed for each site. In some instances, A utility may choose to respond for the entire site, in other instances it may select to respond separately for each unit on a site because of varying vaste management practices or techniques. In all cases, plasse indicato if responses apply to more than one unit.
Information filed with your state - - s or LLRV nanagement agency may prove a useful reference when completing this portion of the questionnaire, Based on our pilot study, the Vaste Management questions should take approximately 8 man. hours to answer.
N A. Spent fuel questions
- 1. Which of the follow!"6 SEEI.gns' techniques ter at reactor storage are you using and hovt i
A. Re racking of spent fuel.
B. Control rod repositioning. '
C. Above ground dry storag**
D. b nger fuel burnup.
E. Other (please identify).
Response
Clinton Power Station (CFS) does not currently utilize the above listed techniques for at. reactor storage.
l 2. Do you plan on continuin6 the use of these current techniquan for streactor storage of spent fuel during the remaining time of your g oparating license or do ycu expect to change or nodify them in sono vay?
Y Response:
Not applicable at CPS.
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- 3. Which of the following techniques for at. reactor storage do you
- antiefenta using until off. site spent fuel storage becomes available and how?
A. Re. racking of spent fuel.
- 3. Control rod repositioning.
C. Above ground dry storage.
. D. Longer fuel burnup, E. Other (please identify).
l
. Responset CPS is presently considering the use of longer fuel burnup as a sechnique until off.sita spent fuel storage becomes available.
4 Vill the techniques described above be adequate for continued at reactor storage of spent fuel for the operating lifetime of the plant, including 1 a 20. year period of license renewal, or are you developing other plans?
Response
The techniques currently uti11:ed at CPS are expected to yield a lifetime of seventeen years.
S. Do you anticipate the need to acquire _addietenni land for t the stor*68 of 8 pent fuel for the operating lifetime of the plant, I includi"5 a 20. year period of license renewal? If so, how much land?
When would this acquisition occur? Where? (if ansver is "yes", 3 4 sentonces)
Response
i No. 1111nois Fower company (IP) does not anticipate the need to acquire additional land for stora6e of spent fuel.'
- 6. Do you anticipate any additionni construction actixitz on. site, or immediately adjacent to the power plant site, associated with the continued at reactor storage of spent fuel for the operatina lif* tine of the plant, includin5 a 20 year period of license renova 17 (yes/no)
Response
No, IP dess not anticipate any additional construction activity on site, e
- 7. If you answered yes to question 6, briefly describe this construction activity (e.g., expansion of fuel storage pool, building above ground dry storage facilities)
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, Responsor I
Not applicable at CPS.
B. Lew. level radioactive ws3te management questionst i
- 1. Under the current scheme for LLRV disposal (i.e. LLRV Policy Amendments 1
Act of 1985 and regional compacts) is there currently or vill sufficient capacity for vastes generated during the 1Leense ren6wal period be avallebte to ysur plant (s)? If so, what is the basis for this conotusion?
Responset This is a question that portains to disposal of Lew. Level Radioactive Vaste (L1RV) during the license renewal period following the first 40 year of
. Pl ant operatton. CPS has not fully considered this long range question
- previously. If the Central Midwest Compact LLRV burial facility is operational at that time, there should be no capacity problem for the burial of LLRV.
- 2. If for any reason your plant (s) is/are denied access to a licensed disposal site for a ahort period of time, what plans do you have for continued LLRV disposal?
~
l h?sponset Saeed on a January 1989 study p'erformed by Burns and Roe, CPS has one year of storale capacity for LLRV should CPS be denied access to a licensed disposal olto. Continued disposal beyond this time fraan is dependent on the status of the Central Midwest Compact. CPS needs for develop additional storage /dtsposal options vt11 be based on the central Midwest Ccmpacts siting progress as they approach the January 1,1993 deadline.
- 3. In a couple of pages, please describe the specific nothods of L1RV managament currently utilized by yove planc. What parcentage of your current LLRV (by volume) is managed by:
A. Vaste coopsetion? gte rescenna Responset
- Vaste Compaction . 90% of CPS DAV is compacted. Tan percent is 4 incinerated. Twenty.four percent of cut disposad L1RV it Dry Activiey Vaste
, (DAV).
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, B. Vaste segregation (through special centrols or segregation at radiation check point)? see respense
Response
Vasts 6e p e6at. ion - No specific data is available. Vaste is initially segr*5ated by utilidation of green containers for clean 24terial and yeliev containers for contaminated natarials. Subsequent s*6re6ation is perforced by maintaining different yellow larrels at control points for launderable and non.launderable materials.
C. Decontamination of vastust aan rascense
Response
' Decontamination of Wastaa . At the present time CPS has not bad to utilise either onsitt or offsite decentamination facilities for decontaminating potentially free releasable waste material. The majority of decontamination that occurs is performed on non vaste items such as tools, respirators, containers of chemicals and reusable parts.
D. sorting of waste prior t> shipment? see reseensa
Response
Gorting of Vasco All DAV is ported prior to shipment. Fifteen to twenty percent of this material is ra turned either to the laundry or tool 8 decon areas for reuse.
E. Other (pleaas identify) ' man raamanna
Response
Other lead resins. Fuel Fool Filtay Domin $1udges and Reactor Vater Clear.up Studges are dowatered prior to shipment for burial. This produces approximately a 1.1 volume reduction.
4 In a couple of pages, please describe the anticinated plans for 1.LRW management to be utillied by your plant (s) during the remainder of the
- operating license and through the license renoval term. What percentage of your anticinated vasta (by volume) vill be managed by:
Response .
At the present time CPS has not established any additional long range plans other than the following:
- 1. CPS incanded to increase the vehme of incinerable caterials. The exact quantity of these materials is dependent on available materials and is not known at this tine.
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- 2. CPS intend to continua refining the use of resins and ' filter natorials to obtain the highest water quality with the least amount of osterial, t
- 3. CPS intend to install a DAV sorting table with pu. ' tors in the near future. The exact quantity of DAV reduction is unknown at this time.
A. Vaste compactioni sea above
- 1. Vaste segregation (through special controls or segregation at radiation check points)t ... above C. Decontamination of wastest see abava D. Sorting of waste prior to shipmentf. man abeve
- 3. Other (plesso identify). nem above S. Do you anticipate the need-to acquire additional land for the storo5e of LLIV for the operating lifetime of the plant, including a 20 year period of licensa renewal? If so, how much landt h n would this acquisition occurt Wheraf (if answer is "yes", 3 4 sentences)
Restense:
This is a long range question which has not been considered at this
. time.
- 6. To provide information on the timing of future low levs1 waste streams, )
if you answered yes to question #5, over what periods of time are these activities contemplated? ,
Respense:
This is a long ranSe question concerning the plant's license renewal period that has not been considered at this, time.
?. Do you anticipate any additional eenstruction activitv- on stce, or inmediately adjacent to the power plant site, associated with tamporary LLRV storage for the operati"5 lifetite of the plant, including a 20 year period of license renewal? (yes/no)
Respense:
No, CPS does not. anticipate any additional construction activity for temporary LLRV storage as long as the Central Midwest Comptet can continue to progress towards the January 1, 1993 goal. -
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Attachment 1 I
- 8. If you answered yes to quession 7. briefly describe this construction activity (e.g., storage areas for stean generator components or other materials exposed to reactor environment).
Response!
Not applicable at CPS.
- 9. To provide information on future lovelevel vasto 1eresse which may effect workforce levels, exposure, and vaste oospect plannin6 40 78u anticipate any major plant modificationa or refurbishment that are likely to generate unusual Volumes of l0V*1evel radioactive waste prior to, or during, the relicensing period for the plant? If so, please describe these activities. Also, what types of modifications do you anticipate to be necessary to achieve license renewal operation through a 20. year license renoval teraf
Response
Fot applicabia at CPS.
C. Mixed low. level radioactive waste question:
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. AQUATIC RESOURCE QUESTIONS j .
This request for information is designed-to obtain the utility" overview of its l power plant's impacts on aquatic resources. It is ngI intended to require new surveys, data collection, or extensive new analysos of existing data.
Responses can be based on existing infernation, for example, by summarization of information contained in monitoring reports, publications, or unpublished I files. The questions should be answered separately for each site operated by the utility.
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Attachment 1 ,
- Docunents that may be useful in addressing the following, questions are:
o Annual Aquatic Honitoring Report submitted t.o the responsible State
- Agency c Tinai Enviroraental State:nont o Arm al Non Radiological Monitoring E. sport as required by Environmental ,
protection Plan of Technical Specifications, Appendix 3 e Section 316 (a) and (b) Damonstration Repert submitted to Environmental
} Protection Agency Based on our ptiot study, the Aquatic Resource questions should take approximately 40 nan. hours to ansvar.
Response!
- 1. Postaticet sing nodifications and/or changes in operations of intake and/or discharge systa.es asy have alterad the effects of the power plant en aquatic resources, or may have been made specifically to mitigste l
tepmots thee were not anticipated in the design of the plant. Describe any such modifications and/or operational changes to the condenser cooling water intake and discharge systeme ninee the issuance of the Operating License.
When the Operating License was obtained, the condenser circulating water g
was treated with gaseous e chlorination system. This system caused many probisms related to chlorine leaks, high wear of ball valves, leaking of pressure reducin5 valves, water, contamination of chlorinators and cracking of injector bodies. The management decided to discontinue the use of 5aseous chlorine at CPS in 1987. Tarporary provisiona were nada to inject liquid chlorine at the circulating Vater pump suction. A
' permanent Plant Modification (M.53), for Sodica Hypochlorite injection, was initiated to provide chemical treatment for Circulatin5 Water, Plant service, Fire Protection (Screenhouse) systems and (Makeup Water Pump House) systems. The modification has been implemented but has not been released for Operations due to various hardware problems. Alternate designs are being conside ed to make this nodification functiom 1. In the interim Circulating Vater system continues to be treated with the li<.uid chlorine using a temporary method.
Apart from above change, no other modifications or operational changes have been made to the condenser cooling water intalee and dischstge systems at CF3 which could alter the effects of the power plant en aquatic resources. ..
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- 2. Sum:narire end describe (or provide documentation of) any known inpacts on aquatic resources (e.g., fish kille, viole.tions of discharge pernit conditions) or National rollutant Discharge Elimination Systete (NPDEG) enforcement actions that have occurred since issuance of the Operating License. How have these been resolved or changed over tiss? (no response to this question should indicate whether i.mpacts are engoing or were the result of start up probless that were subsequently rescived.)
Response
NPDES Violations during and Since 1987 NPDR$ concompliances have been variable in nature and randon in occurrence. No noncompliance has had a .
- signifir. ant twpact on the water quality or ecology of the lake.
1987 Effluent Violations (1) On Tobruary 4, 1987 and February 7. 1987 discharge samples from the water treatment vaste outfall (003) were not obtained. This problem was due to the failing of the sample collection equipment shortly after the discharges were initiated.
(2) on March 20, 1987 sample results of the discharge from the water treatment vaste eu:!all (003) indicated a pH of 5.9. This was due to an improper setting on the pH adjustaant equipment.
(3) Total suspended solide concentrations of 39 og/l and 49 ag/l vere reported at dircharge 008 on May 4, 1987 and May 19. 1987 respectively. These concentrations were due to heavy ratufall vashin5 solids into the pond.
(4) The holding time was exceeded on a total suspended solids sample cellected from the water treatrent vaste outfall (outfall 003a) on June 9,1987 due to a lab error. -
(5) The focal ecliform count for the sanitary treatment plant (outra11 002a) effluent on July 9,1987,vas 500 colonias/100 al. No cause was determined for this count.
(6) On July 22, 1987 a sample collected from the sanitary treatment plant (outfall 002a) discharge indicated a pH of 9.2. Operational adjustment were made immediately and the discharge was corrected by July 23.
(7) On July 31, 1987 chlorination ceased at the sanitary wastavater treatment facility (002a) resulting in a fecal coliform count of 1400 colonies /100 al. The ceasing of chlorinatien was due to the deptotion of chlorine gas.
(8) A pH of 9.1 was reported for a discharSe frots the erosion sedimentation control pond (008) on Au5ust 2. 1987. This excursion resulted from excessive rain washing agricultural residue into the outfall.
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(9) No pH sample was collected at outfall 003 for the discharge which
' occurred on August 9, 1987 due to technical error.
(10) The oil and grease concentration of a radwt.ste discharge (outta11 002a) on Augast 16, 1987 was 28.5 mg/1. The cause of the noncompliance vae not determined, but it was considered an isolated incident.
l (11) On september 17, 1987 the oli and grease concentration was report as 70 mg/l at outfall 005 . erosion sedimentation control pond.
No cause could be determined for this violation. Subesquent oil and grease samples indicated a return to cesp11ance.
(12) On September 21, 1987 traea amounts of radioactive iodine were detected in the sanitary wastavater creatment plant affluent (Od2a), it was determined that the exerament from a person undergoing chometherapy had enterec the plant. No releases of radioactivity from the station were detected.
(13) on September 30, 1987 a focal coliform semple obtained from the 002a discharge . sanitary wastewater treatment plant . yielded 480 colonies /100 al. This result is attributed to insdaquate chlorination at the facility. The affluent returned to compliance by October 1st.
(14) On April 15, 1968 the pH of the effluent from the water tr'estment vaste pond (outfall 003) to Clinton Lake was 3.0 for a period of two hours. This situation was corrected inmediately when it was a
determined that the pH probe had been isolated from the sampling stream, thus preventing the pH oorrection equipment fres responding to a low pH. .
l (15) on occobar 11, 1988 the total residual chlorine concentration in the discharge flune affluent (outta11002) exeended the permit
' liste of 0.2 as/1. The reported concentration was 0.27 ag/1, This incident was due to the changing chlorine demand and the lower ambient fluso temperatures. A new hypochlorite feed system had been recently installed and chlorination practices had not been finalized at the time of the incident.
(16) A local coliform count of 680 colonies /100 31 (the 11ait is 400 colonies /100 21 of sample) was measured in the asnitary treatment plant affluent (outfall 002a) on December 14, 1988. The sample was believed to be nonrepresentative due to the sanpling locacion.
(17) chlorine was discharged into the inlet of the circulating water pumps for two hours and six minutes on August 18, 1969 vhich is a violatinn of the NPDES permit two hours.per. day chlorination limit. Operations personnel vera not aware of the requirement.
Procedures were revised to ensure this type of incident did not
, recur.
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(18) The total ruepended solide concentration in the area runoff collection basin (outfall 008) effluent was 93 ag/1 on March 12 1990. The solida limit for this dischargo is 15 ng/1. The cause of the violatten was believed to be heavy rains washing solids into t.he pend.
- (19) The sanitary treatment plant effluent (outfall 002s) did not contain a detectabla chlorine residual on June 12, 1990 due to a malfunctioning chlorina tablet injector. The situation was corrected by the n6xt day.
Fish Kills (1) Discharge canal Seeween June 6 and 7,1987 approximately 1,000 to 2,000 channet catfish, carp, white crappia, gittard shad, and sunfish were
' killed. On July 8,1988 approximately 130 channel catfish, carp, and gissard shad were killed. On August 3, 1987 approximately 1,700 to 2,500 white crappie, gitzard shad, black bu11 heads, hiuegill, channel catfish, various minnow species, and frssh water aussels were lost.
These fish kills occurred during power ascensten tasting or suuner i
- operations when the discharge canal temperature first reached 100 degrass F. The discharge canc1 was not designed as an area to
- support fish and aquatic life. There are two crop structures g whiah prevent floh entry from the take at the downstream and.
Fish inernduccions to the discharge canal resulted from entrainment during proeperational testing or eparation. A fish community developed in the canal prior en startup, and reintroductions appear to occur during cooler seasons threugh entrainment of fry and small fingerlings.- Minor kills of fish I will occur each summer when diseharge camperatures approach the tharsal Itaits.
(2) Clinton Lake on August 6 and 7,1986 hybrid striped bass, 342 in number died in Clinton Lake. The kill was restricted to the flooded Gravel pite between the marina and the dam. A combination of high cverlying water temperatures and low dissolved oxygen levels in tha pit created by the unusually hot summer was the most-likely-ceuse of the fish kill. .
The -loss of those fish did not have a significant sittat en t.To
. hybrid striped bass population _in the lake. Striped basa hybrids are part of an experimental stocking program and are not indigenous to Clinton Lake. In July,1986 IP stocked 75,000 striped bass fingerlings. This kill did not represent a significant impact to the hybrid striped bass population in the lake.
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l (3) Salt Creek
- Hybrid striped bass. 63 in number, vere found dead in Salt Creek below Lhe Clinton Lake spilivay the first week of January,1990.
This incident followed an unusually cold period in December and nest likely was a result of stress created by the cold temperatures in thr tailwater. This incident was not related to plant operations bince the lake near the apt 11way is outside of the influence t ' therani discharges.
l COMMENT 3: All of the abrve incidents were intermittent in nature I
and vara not considered chronic, ongoing problema. They were satisfactorily resolved as quickly as possible. Also, most of then can be e,ttributed to nornal operation of a power plant NPDES Enforcement Antionat. No NPDES.related enforcement actions have been taken by the filinois EPA at the Clinton Power station.
- 3. Chenges to the NPDES permit during operation of the plant could indicate whether water quality parameters were determined to have no significant impacts (and were dropped from monitoring requirements) cr were
. subsequently raised as a vatar quality issue. Provide a brief summary of changes (and when they occurred) to the NPDES permit for the plant since issuance of the operating License.
. I i Responset g Modifications effootive 11 28 07:
(1) Outfall 003(b), preoperational radweste treatnent systam effluent and pipe flushing vastaa, was deleted because this outfall is no longer needed as a result of fuel leading at the station.
. (2) Sanitary wastes from the Clinton Marina vse added as a contributory vastes stream for.outfall 002(a) sanitary treatment plant effluent.
(3) Special condition all which references pCB Order 64 135 was deleted from the permit because the order was no longer valid.
(4) The pH nonitoring requirement for outfall 002(b), radwaste trentaent system effluent, was deleted due to he combinin5 of this discharge with the condenser cooling water.
- The radwaste solidification equipment cooling water blowdown was (5) added to the list of contributory vaste streams for "
outfall 004 -
. transformer area oil / water separator.
(6) Screenhouse sump discharges have been identified under the list of
. contributory waste streams for cutfall 005, screenhouse intake screen backvash.
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Modifications effective 02 02 89:
(7) parts 6(b) and 6(e) of specist condition #6 specifying operational requirements for the intake acreens was deleted.
(8) $pecial coesition v3 vas modified to include specific nonitoring i requirements when a continuous chlorina analyrer is used at outfall 002, discharge
- flume.
(9) Auxiliary boiler blosdown was added to the list of contributory vaste streans for outfall 003, water treatment vaste discharge.
Modifications tentatively effective summer,1990:
(10) The radvaste solidification equipment cooling water blevdown will j be deleted from the contru atory vaste stream itat for outfall 004, transformer area oil / vater separator.
(11) All monitoring and reporting requirenants for outfall 008, area e
runoff collection basin, vill be deleted.
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- (12) A year round disinfection exemption for the sanitary treatment plant offluent has been approved by the IEPA and will bacone effective once the NPDgS permit is renewed.
(13) The fire protection system flush waters vill be added to the contributory vaste stream list for outfall 002, discharge fiume.
I (14) Standby liquid control system test vastevater will also become a part of the centributory ,vaste stream list for outfall 003, v6ter treatment vastes.
(15) The control and instrumentation process simulator component leakage vastewater is expected to be added to the contributory vaste stream list for outfall 002(a).
(16) Sanitary wastes from the Clinton Marina vill be deleted from the contributory vaste stream list for outfall 002(a) sanitary treatment plant effluent,
- 4. An examination of trends in the effects on aquatic resources monitoring can -indicate whether, impacts have increased decreased, or recoined rela *.ively stable during operation. Describe and sa:narire (or provide documentation of) results of monitoring of water quality and aquatic biota (e.g., related to NPDES petuits. Environmental Technical
. Specifications. site specific monitoring required by federal or state agencies). What trends are apparent over timet 12 -
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i Re sponse
. (1) Aquatic Biota (a) The CPS Environmental Monitoring Program Biological Report 1989, summarises the operatier.a1 data (1997 1988) and comperes it to preoperational data (1983-1986). The
' Executive Summary (Attachment 1) provides a cencise summary of the inpacts notec in each biolo81 cal discipline. The thermal effluents generally have resulted in extending or
. shif ting of some seasonal patterns. Summer suppression of j biological activity have been limited to a small area near the thermal discherges and is usually offset by the extended growing season. Cape fish abundance, growth, and year class acrength Laprov6d during the operational period.
(2) Water Quality .
i Clinton Power Station: Envirennental Henitorine Prorram (a) Total phosphorus concentrations exceeded the state water quality standard in 70 percent of the epilimnion samples in Clinton lake. High concentrations of phosphorus in the lake are probably due to surface water runoff from adjacent agricultural land.
(b) Approximately eight percent of the optiimulon dissolved oxygen concentration measurements per formed
, during the operational period were below the lilinois
. Pollution Control Board (IPCB) standard of 5.0 mg/1.
Dissolved oxygen concentrations were significantly (95 percent confidence) lover at att depths during the
- period when Cps was eparational.
(c) Vater temperatures were significantly (93 percent confidence) greater at every lake monitoring point during the period when CPS vae operational. Average temperatures increased from 13.2 C during the preoperational period to 21.1 C during the operational period. Distinct long tern stratification did not develop even at site 8. the deepest site in the lake.
(d) Average sulfate-concentrations were greater than 30 as/1= probably because of lov vater levels in the lake duving the operational period. Unusually hot and dry usteorolo81 cal conditiens in 1988 (second lowest rainf.11 in 110 yeere) contributed to low water levels
, in Citnton !4ke. The Icvar lake levels concentrated sulfares and may have increased the oxidation of sulfides wht2h had previously been entrained in
, anaerobi sediments at greater depthe.
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(e) Decreasin6 nitrate concentrations were attributed to increasing concentrations of phytoplakton, which
- depleted nitrate suppites, and to low precipitation in 1988. Nitrate concentrations tended to be lover at all sites during the period when CPS was operational.
(f) chloride concentrations were significantly greater during the period when CPS was operational. Increased chierida levels were at lust partially due to concentration from svaporative loss. Sodium i hypochlorite is used to condition the condenser cooling water at CPS. However the cumulative dosage used in these treatner.ts could account for only one percent of the increase in chieride concentrations in the lake during the period when CPS was operational.
t S. Su:mnarize types and numbers ;or provide documentation) of organisme entrained and impinged by the condenser cooling water system minee issuance of the Operating License. Describe any seasonal patterns 4
associated with entrainment and impingement. How has entrainment and impingement changed over timet s .
Response
. 01:sard shed young.of. year accounted for 99 percent of the ispinged fish. More than 96 percent of the impingement took place in the vinter and early spring. Cistard shad are not physiologically adapted to .
g winter temperatures at this latitude and most all the impinged shed are either dead or moribund. Plant operations are not the cause of Ei zzard i shad impingement; the plant intake merely serves as a collection device i for these incapacitated fish. Annual variations in impingement rates
! are expected depending upon sitzard shad densities and water outage schedules (reduced pumping rates) of the station.
IPC's 316(b) impingement and entrainment desenstration is currently being reviewed by the 1111nois EPA.
- 6. Aquatic habitat enhancement or restoration efforts (e.g.. anachronous fish runs) during operation may have enhanced the biological connunities in the vicinity of the plant, Alternatively. degradation of habitat or water quality may have resulted in loss of biological resources near the site. Describe any changes to aquatic habitats (both enhancennt and dagradation) in the vicinity of the power. plant since the issuance of ths operating License including those that nay have resulted in different plant impacts than those initially predicted, ,,
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Response
- Biological comunities in Clinton 1.ake are enhanced by an aggressive stocking progra: for game fish. In addition to fish stecked by the Illinois Department of Conservation (200C), Illinois Power Company IP has purchased fingerling fish and has expanded its fish rearing pond
' program, IP now has five ponds adjacent to Clinton Lake which are used to provide fish for Clinton 1Ake.
The IDOC and IP have enhanced the aquatic habitat by constructing artificial reefs from Christmas trees, tires, and rock tiprap. The IDCC is also attempting to establish aquatic vegetation beds in the upper
> ends of the lake to improve the aquatic habitat.
The only habitat degradation which has occurred hos been reduced waste depth in the lake's upper enda due to incoming stit from the watershed.
l Incoming silt has also increased turbidity and limited growth of squatic vegetation.
! 7. Flant operations may have had positive, negative, or no inpact on the use of aquatic resources by others. Harvest by coereerdal or recreational fishernen may be constrained by plant operation.
Alternatively commerciti harvesting may be relatively *:arge compared with fish losses caused by the plant. Describe (or previde documentation for) other nearby uses of waters affected by cooling water systems (e.g. , swinaning, boating, annual harvest by commercial and recreational fisheries) and how these impoets have changed since g
issuance of the operating License.
Responset .
C1tuton Lake is multiple.use cooling lake with public recreation being the major secondary use. Plant operations have had either not impact er a positive impact on recreational activities. Recreational use of ti.e Clinton state Recreation Area during' the operational period (19971969) has averaged 863,536 persons / year compared to 676,503 persons / year during the last three preoperational years (1984 1966).
Recreational fishing is one of the most popular public ussa. The Clinton uke Creel survey su:mnary Report (Attachment 3) provides data en recreational fishing use. During cperational years, increases were noted in angler effort, catch.per. unit.cf. effort, and the number of fish harvested. The number of fish harvested / hectare and angling pressure en Clinton L.ake are among the highest in Illincia.
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1 Attachment 1 ,
' Other recreational uses which include camping, swimming, boating, hiking, and hunting have also incressed during the operational years.
Prior to issuance of the operating licones, concerns were raised that thermal effluents would enhance the growth of pathogsnic amoeba to the
, point it would create a public health risk. Clinton Lake was monitored for pathogenio areceba for three years prior to plant operation and three years after operation. 'The monitoring results indicated pathogenic amoeba (Naealeria fevieri) vare present in 0.5 percent of the samples prior to cperation and in 4.4 percent of the samples after operation.
i The results were given to the Illinois De rtment of Public Health an j they have indicated present levels of' pathogente amoeba in Clinton taka j do not constitute a significant public health risk. Primary contact
- water sports are currently permitted on Clinton Lake.
! S. tescribe other sources of impacts on aquatic resources (e.g., industrial
' discharsee, ot.har power plants, agricultural runoff) that could contribute to cumulative tapaats. What are the relative contributtone by percent of these sources, including the contributions due to the
- power plant, to overall water quality degradation and losses of aquatic l biotal Pesponse The major impact on the aquatic resource in Clinton Lake is incoming
. sedissediment from the watershed. In addition to the habitat degradation described in question w6. runoff from the watershed can also leak to pesticide contamination and increased nutrient loading to p Clinton Lake. Since the preoperational period, there has been a health i advisory for channel catfish from *;he lake. The most common contaminant responsible for this health advisory has been chloridance and Les source has been from the watershed. The health advisory has not been due to plant operation.
- 9. Provide a copy of your Section 316(a) and (b) Demonstration Report required by the Clean Vasta Act. What Section 316(a) and (b) determinations have been made by the regulatory authoritiest Respense:
(a) Preliminary studies have been perforned to identify any thermal or impingement impacts on the lake due to the operations of Clinton Power Station. IIPA decisions regarding the significance of cheen lapacts are not expected until 1992.
(b) A thermal variance was granted by the Illinois Pollution control
. Board (IPCB) on June 22. 1989 which allove alternate temperature limits for the fiume discharge until september 30, 1990, During the period of the v ntance, the nsximum daily sverage fluce
, discharge temperature shall not exceed 110.7 degrees F and daily i avatage flune dischargs temperatures shall not exceed 99 degrees F more ths.n 90 days durin6 a fixed calender year running from January 1 through December 31.
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Attachunt 1 ,
4 (c) The previously noted thersal variance was extended by the IPCB on June 21,1990 to September 30, 1992.
SOCICECONOMIC QUESTIONS FOR ALL UTILITIES This portion of the qu+etionnaire is designed to gather infot'sation about the socioecenemic impacts of nuclear power plants. Vhare estir.ates are provided, the estimates should be qualified as appropriate. Information contained within your A1AAA program updates may prove a useful refarance when completing
, this 1,ortion of the questionnaire. Based on our pilot study, the sectosconcaic questions should take approximately t.0 man hours to ansvar. The majority of that time is expected to be dedicated to Question No.3.
- 1. To understand the importance of the y nt and the degree of its socioeconomic in' pacts on the local r*60n, est4=ata the number of permanent worbra on site for the most ree. int year for which data are available.
i Response The average number of permanent uorb ra on. site at Clinton Power Station
. (CPS) for the year 1989 was 1,244 g 2. To understand the importance of the plant to the local region, and how that has changed cver time, nati==ta the avers &o number of permanent workers on site, in five year. increments starting with the issuance of the plant's operating License, If possible, provide this information
. for each unit at a plant site, j Responset CPS has not yet been operational for five years, the average number of permanent workers on site at CPS, since issuance of the plant's Operating License in April 1987 through June 1990, is 1,272.
- 3. To understand the potential impact of continued operation for an additional 20 years beyond the original licensing ter::. please provide for the following three cases:
A) a typical planned outage:
B) an ISI outage; and ,,
. C) the largest single eutage (in terna cf the number of vorkers involved) that has occurred to date an AAtir.alg of additional workers involved (for the entire outage and for each principal task). length of outage, months and year in which work occurred, and cost. Also, anticata occupational desas received by pernanent and temporary workers during each principal task.
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.. _______.________,MM____b__. ._.A_ O__. _ _ _ hA_ OW k $,
Attachment 1 ,
E.. pense:
. A) CPS has only cespisted one cycle of operation and therefore has a 11mitad history from which average data can be obtained. In the future, a typical cycle of operation will last approximately 18 months, and require one refueling outage and one planned maintenance out*68 A typtoal refueling outa6es will last approximately 60 60 days,
. cost approximately $18,500,000 and require approximately 800 1000 additional workers.
Estimated accumulated doses will be established for each planned
, outage once the assoele.ted outage scope list is finalized,
C) The largest single outage to date at CPS was the First Refueling and 1st Outage (RT.1) which started in January 1989, was completed in May 1989, the cost $21.160,800, i
Approximately 850 additional workers were mobilized for the outage. An exact breakdown of the additional workers required for each major task (approximately 8 10 tasks total)'is not available. Hov m r, it has been antimated that an average of 20 23 workers par shif t (tvo shifta por day) were required to suppor? ene.h task, with the exception of Refueling and 181 activities. Refusting and ISI activities required an average of 35 t.0
. ; workers.
The total man.e expended during RT.1 was 253.599 as recorded by Thermoluminescent Dosimeter (TLD) results. A breakdown of exposure of tha main activities is as fo11cvs:
DOSE Activity MAN. REM I'eedwater Check Valve Maintenance 12.585 Refueling Activities 12.166 Main Steam Isolation Valve Repair 7.973 Safety / Relief Valve Renoval 10.523 Control Rod Drive Replacement 11.365 Reactor Recirculation Pump Seal Replacement 17.839 In 5ervice Inspection 77.109 Reacter Vater Clean yp System Outage 32.150 Interasdiate Range Monitor Replacement 3.295 The remainder of accumulated exposure is associated with various other tasks.
- 4. To smderstand the plant's fiscal importance to specific jurisdictions,
, for 1980, 1985, and the latest year for which data are available, enti~ ate the entire plant's taxable assessed value and the amount of tawes paid to the state and to each local taxi"6 jurisdiction.
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Attachment 1 Responset
. Clinton real estate taxes are paid directly to local governnents within DeWitt County and to the multi. county junior college district. Tha local taxing districts that primarily benefit from growth in the local tax base attributed to CPS includet Dewitt County, Clinton Unit 15 School, Harp Township and Richtend Conrounity College. Ite related taxable assessed values and preparty tones for 1980, 1985 and the current year's estimate (1989) follow!
II.l.2 12.11 lill Total Assessed Value $139,416,000 $540,209,000 $821,333,000 Total taal Estate Taxes $ 4,245,000 $ 10,046,000 $ 14,607.000 These values represent the entire plant's taxebla assessed value, including .
1111nete Power and joint. ownership share.
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