ML19326C740
| ML19326C740 | |
| Person / Time | |
|---|---|
| Site: | Arkansas Nuclear  |
| Issue date: | 10/19/1976 |
| From: | Masnik M Office of Nuclear Reactor Regulation |
| To: | Houser A INTERIOR, DEPT. OF, FISH & WILDLIFE SERVICE |
| References | |
| NUDOCS 8004280674 | |
| Download: ML19326C740 (2) | |
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OCT 1 9 197t>
Docket No. 50-313 l
Dr. Alfred Houser South Central Reservoir i
Investigations t
Bureau of Sports Fisheries and Wildlife U. S. Department of the i
Interior Fayetteville, Arkansas i
Dear Dr. Houser:
On March 28, 1975 Dr. C. Billups and I met with you concerning the I
threadfin shad losses at Arkansas Nuclear One - Unit 1 (ANO-1).
Since that time we have modified to some extent their monitoring program and have followed in some detail the subsequent reports generated from these studies.
4 On August 30, 1976 Arkansas Power and Light. Company submitted a l
Semi-Annual Environmental Monitoring Report for Arkansas Nuclear One - Unit 1 covering studies performed during the first and second quarters of 1976. A copy is enclosed.
I would like to call your attentiou to several interesting observations made by B. Tatum, consultant to AP&L, during his execution of the ANO-1 fish monitoring program. On page 47 it is reported that "Large hydra were found feeding on larval fish in I
Area C (Discharge Cove) during May 1976." Is this unusual for southern reservoirs and should we be concerned?
l The second observation, this time substantiated by preserved material, again appearing on page 47, concerns 'the larval fishes in the reservoir:
"The June 1976 meter net samples from all areas of the reservoir produced 30 percent to 60 percent larval fish with raised areas or growths over the body and/or spinal curvature."
B. Tatum stated in f
a phone conversation that the vast majority of specimens collected vere clupeids, and that this condition persisted at a somewhat reduced
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1evel into the month of July, particularly in the area of the Discharge Cove. We are interested in the cause of the developental abnor-malities and/or pathology in order to evaluate any interaction with the station and would, therefore, like your opinion on the matter.,j
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r - P,r. Alfred flouser OCT 191976 The final observation of interest, on page 50 concerns the molluse cosamunity of Lake Dardanelle:
"On almost tvery collection trip frois mid-May through June, dead but not deteriorated :aussels were observed floating in every area of the reservoir." We had previously assumed the concentration of Unionids in the reservoir to be quite low. The cause of death is presently unknown. Again we would like your coemeenta concerning this finding.
4 ANO-1 was operating only during a small portion of the report period.
Tha semi-annual report is infortsative but not conclusive. Therefore, we would appreciate any, coraments you may have which would contribute l
to an understanding of the aquatic biota in Lake Dardanelle.
I may be contacted at 301-492-7903.
i Sincerely,
. Original Siautd 4
Michael T. Masnik, Ph.D.
Environmental Specialists ! ranch Division of Site Safety and Environmental Analysis Office of Nuclear Reactor Regulation sure:
DISTRIBUTION Semi-Annual Report Docket File 50-31 cc: w/o enclosure NRR:Rdg
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- ""U ET:Rdg R. Ballard B. Grimes L. Higginbotham B. Converse I
W. Pasciak C. Billups M. Maanik 1
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10/14/76..._
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Form AEC.318 (Rev. 9 53) ABCM 0240 W u. s. oovsnmuunt paintene orrican ter..sas.see i