ML19338F149
| ML19338F149 | |
| Person / Time | |
|---|---|
| Site: | Haddam Neck File:Connecticut Yankee Atomic Power Co icon.png |
| Issue date: | 09/30/1980 |
| From: | CONNECTICUT YANKEE ATOMIC POWER CO. |
| To: | |
| Shared Package | |
| ML19338F133 | List: |
| References | |
| NUDOCS 8010070571 | |
| Download: ML19338F149 (5) | |
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DOCKET NO. 50-213 ATTACHMENT 1 IIADDAM NECK PLANT PROPOSED CHANGES TO ENVIRONMENTAL TECllNICAL SPECIFICATIONS SEPTEMBER, 1980 8010070 57/
PROPOSED CHANGES Section 4.2 of the Haddam Neck riant Environmental. Technical Specifications (ETS) ' requires-that tagging of the Connecticut River shad population takes place in the spring in order to estimate the annual shad run.
This ETS requirement was based.on the concern by both Northeast Utilities and the Connecticut Department of Environmental Protection that the Haddam' Neck Plant's thermal plume might adversely influence the up river migration, larval' development, and/or spawning success of shad. Because no detrimental effect due to plant operation has been observed over a twelve-year ~ period of study, it is proposed that Section 4.2 be deleted in its entirety.
REASON-FOR CHANGE Shad studies began in 1965, prior to the operation of the plant. From 1965 to 1973, over 34,000 adult shad were tagged in the lower three kilometers of the Connecticut ~ River by the Essex Marine Laboratory. A tag return rate of over 20% was realized with full detail on the time and place of capture provided. In 1967, 1968, and 1969, an additional 230 adult shad were fitted with ultrasonic tags. These fish were subsequently tracked by boat-mounted receivers and shore-based recording systems.
Comparinon of pre-operational and operational studies clearly demonstrated that no thermal block or effect existed to impede the up river migration of shad or to in any way reduce reproductive success. Analysis.of the tagging data has revealed:
(1) similarity of rates and patterns of river migration; (2) agreement.in the annual percentage of tag recoveries above the plant from fish 1 released in the lower three kilometers of the river; and (3) the absence of significant changes in behavior or. migration rates of shad tracked by ultrasonic means in t'.e.iumediate area.of the thermal discharge.- The studies on agc distribution conducted by the State of Connecticut, Department of Environmental Protection reveal a consistency in the age composition of male and female shad each year.
4 Further, there is consistency in the length and weight distribution by age as reported in Population Dynamics of the American Shad (Alosa sapidissima) in.
the Connecticut River, 1940 - 1977, by Victor Crecco, State of Connecticut,
, Department of Environmental Protection, Marine Region, 1978. The average length by age for both male and female shad had'a range of from 1 24 to 1 59 cm. from 1974 to 1977; the average weight by age varied by from 1 039 to 1 133 kg. from 1974 to 1977.
Population trend analysis of-the annual variations from 1935 to 1973 in the size of the shad run demonstrates that large scale, year-to-year fluctuations in population size are common. The estimates for the years 1935 to 1964 taken from data of earlier studies indicate that the number of Connecticut River shad varied between 247,000 (1955) and 990,000 (1944).
The population fluctuations during the period 1965 - 1973 were of the same order -- 275,000 in 1972, and 428,000 in 1971.
Although a population size of 1,470,000 was estimated for 1965, it had been reported by Crecco that this number is actually an over-estimate.
Population analysis by the State. of Connecticut had resulted in the develop-ment of an alternative method of population estimation. This method, termed the "Fredin Method", utilizes catch and effort data in order to estimate population size.
The population estimates using this method are in good agreement with those obtained using tagging and re-capture methods, and thus, we believe the catch-effort method will give comparable results to those of a tagging program. The State of Connecticut, Department of Environmental Protection, will continue to generate population estimates each year, and, therefore, tagging studies need no longer be continued by Connecticut Yankee Atomic Power Company.
d Af ter twelve years of continuous study, it appears that sufficient data are available to document the lack of any adverse effect resulting from the opera-tion of the Haddam Neck Plant on shad. Therefore, it is requested that Section 4.2 of the Environmental Technical Specifications be deleted.
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TABLE OF CONTENTS (continued)
Paa,e 4.0 Special Surveillenec, Research or Study Activitics 4.1-1 5.0 Adminir.trative Controls 5.1-1 5.1 Respcasibility 5.1-1 5.1.1 Corporate officers 5.1-1.
$.1.2 Plant Superintendent 5.1-1
$.1.3 Environmental Prograr.s Branch 5.1-1 5.1.4 Technical Personnel 5.1 $.1.5 Environ = ental Review Board
. 5.1-1
$.1.6 Plant Operations Review Cc-4 tree 3.1 3
$.2 Organization 5.2-1
$.3 Review and Audit 5.3-1
$.3.1 Environ = ental Review tonrd 5.3-1
$.3.2 Environ =cntal Technical Specifications 5.3-1 3.4 Action to be Taken if a Limiting Conditics for Operction is Exceeded 5.4-1
$.4.1 Remedial Action 5.4-1
$.4.2 Investigation 5.4-1 5.4.3 Report 5.4-1 l
3.3 ' Procedures 5.5-1 5.5.1 Written Procedures 5.5-1 3.5.2 Standard operating Procedures 5.5-1 5.5.3 Review 5.5-1 3.6 Plant Reporting Requirements
~5.6-1 S.6.1 Routine Reports 5.6-1 5.6.2 Nontoutine Reports 3.6-2 5G3 Changes 5.6-L 3,7 Records Retention 5.7-1
$.8 Special Requirements 5.8-1 2
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4.2 Shad Monitoring Pregram (DELETED)
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4.2-1
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