ML19317H170
| ML19317H170 | |
| Person / Time | |
|---|---|
| Site: | Arkansas Nuclear  |
| Issue date: | 09/18/1975 |
| From: | Miraglia F, Youngblood B Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML19317H162 | List: |
| References | |
| NUDOCS 8004210648 | |
| Download: ML19317H170 (4) | |
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C rd UNITED STATES NUCLEAR REGULATORY COMMisslON WASHINGTON, D. C. 20555 ENVIRONMENTAL IMPACT APPRAISAL BY THE DIVISION OF REACTOR LICENSING SUPPORTING AMENDMENT N0. 3 TO DPR-51 CHANGE NO. 3 TO THE TECHNICAL SPECIFICATIONS ARKANSAS POWER AND LIGHT COMPANY ARKANSAS NUCLEAR ONE UNIT 1 IAN0-1)
DOCKET N0. 50-313 ENVIRONMENTAL IMPACT APPRAISAL 1.
Descriotion of Proposed Action By letters dated January 17, 1975, April 11, 1975, two dated April 11, 1975 and July 11, 1975, Arkansas Power and Light Company (AP&L) sub-mitted proposed changes to the Technical Specifications Appendix B to License No. DPR-51.
The proposed technical specifications include changes:
(1) in thermal monitoring requirements to reflect the re-location of the thermal sensor in the discharge fiume; (2) in radio-logical effluent monitoring requirements on the types, frequencies, and analytical sensitivities necessary; (3) in specifying milk sampling locations, and (4) of a clarification and editorial nature.
The more substantive changes are described in the April 11,1975 and July 11, 1975 letters and would modify current procedures for monitoring fish impingements and would incorporate requirements for two special study programs which are designed to provide information to determine the environmental impact, if any, of winter impingement losses of threadfin shad.
The proposed changes of April 11, 1975 and July 11, 1975, were requested in response to staff recommendations made in Daniel R. Muller's letter of January 9,1975 and meetings of March 5 and June 5,1975. As a result of these meetings, the staff recommended that to determine the significance of threadfin shad impingements being experienced at ANO-l certain programs and measures be instituted.
These measures included, among other things, modification to the current impingement sampling p% *ty kb A
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. required by the technical specifications, and additional cove rotenone surveys to provide a larger data base to index variations in year to
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year fish populations in Lake Dardanelle.
The changes requested in the January 17, 1975 letter and the two April 17, 1975 letters are for minor modifications to several monitoring requirements as summarized above and for some editorial and clarifying language.
The proposed action will result in the following:
a.
Modification to Impingement Sampling The current specification will be modified to include three 24-hour samples per week during periods of high impingements October 1 through March 31.
A statistical study performed-by Argonne National Laboratory on a similar impingement sampling problem involving a similar species of fish for plants located in the Great Lakes Region has shown that sampling three times per week for 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> provides the i
optimum amount of information necessary for an accurate estimate of yearly impingement losses.
Thus the staff has required that three 24-hour samples per week be taken during i
high impingement periods to estimate impingement losses.
b.
Initiation of Two Study Procrams Re Threadfin Shad Since the primary effect of current ANO-1 operation involves the removal of threadfin shad from Lake Dardanelle and since threadfin shad are the primary forage fish for the game and canmercial species, demonstration of no appreciable harm to the threadfin shad population may be sufficient to assure that the current high levels of the desirable game and com-mercial fishes in Lake Dardanelle are not being affected.
Such a demonstration can be accomplished by monitoring variations in year to year populations of fish species in Lake Dardanelle using cove rotenone surveys.
The additional
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recommended studies, i.e., the modified impingenent study, and the study designed to detect diel changes in impingement levels should result in supportive data characterizing the plant-related impact on the threadfin shad populatica and should indicate modifications, if any, to plant operation during periods of expected peak impingement that will lessen fish mortality.
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r 3-The purpose of these studies, therefore, i's to examine the i
effects of plant operation on the threadfin shad and other fish populations to the extent of ensuring the continuance of the present reservoir game and commercial fishery.
The following results are expected from the requested studies:
(1) Cove Rotenone Surveys (a) Monitor the populations year to year variations in fish in Lake Dardanelle.
(2) Study to Determine Diel Changes in Impingement Levels (a) Provide infonnation necessary for quantifying the extent of fluctuations in impingement levels within a 24-hour period. The results of this study may indicate that reduced pumping, during certain periods of the day, will reduce impingement.
c.
Minor Changes in Biological Monitoring Program (1) Specification 4.1.2.a.(1).(a).3),a), for gill net survey i
redistributes but does not change the total number of sampling days.
(2) Table 4-3 and Figure 4.3 are revised to correctly identify sample location 19 and identify sample areas.
Establish-ment of sample areas rather than specific locations for Cove Rotenone Trawling and Shoreline Seine and Fish Cage Surveys.
d.
Changes in Thennal Discharge Monitoring Specifications 2.1.1, 2.1.2 and 2.1.4 now correctly reflect the new location of the thermal sensor in the discharge flume.
e.
Changes in Milk Sampling Location Specification 4.2.10 now specifies the criteria for establishing milk sampling locations rather than identifying specific fanns or dairy herds.
f.
Changes in Radiological Effluent Monitorinq Table 2.2 now reflects current staff positions with respect to the analytical sensitivities, types and frequencies of l
methods for monitoring various radioactive effluents.
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2.
Environmental Impacts of the Proposed Action All the changes to the Technical Specifications, Appendix B described above and associated with the proposed action involve modification to various environmental monitoring programs or minor editorial clarifi-cations.
The proposed action does not authorize any change in the types or amounts of effluents or an increase in power level. The proposed changes will enhance the capabilities of the monitoring programs now in effect to assess the environmental effects of ANO-station operation.
In' particular, in the area of fish impingement; the revised specifi-cations will provide the infonnation to determine the impact, if any, of the high winter impingement losses on the Lake Dardanelle fishery.
None of the above changes associated with the proposed action involve nor effect matters related to the safe operation of the plant.
The proposed action does not involve significant new safety infonnation of a type not considered by a previous Commission safety review of the facility.. It does not involve a significant increase in the probability or consequences of an accident, and does not involve a significant hazards consideration.
The Commission has also concluded that there is reason-able assurance that the health and safety of the public will not be endangered by the proposed action.
3.
Conclusion and Basis for Negative Declaration On the basis of the foregoing analysis and the staff evaluation, it is concluded that there will be no environmental impact attributable to the proposed action other than that already predicted and described in the Commission's FES for ANO-1 issued in February 1973.
Having made this conclusion, the Commission has further concluded that no environ-mental impact statement for. the proposed action need be prepared, and that a negative declaration to this effect is appropriate.
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F.
ir ia, Project Manager Environmental Projects Branch 3 Division of Reactor Licensing
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B.
You lood, Chief Environmental Projects Branch 3 i
Division of Reactor Licensing SEP 18 M5 ge
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