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FISH AND SHELLFISH IMPINGEMENT AND ENTRAINMENT PATTERNS ON THE FLORIDA PANHANDLE

J. H. Neese and R.M. Markey Gulf Power Company, Pensacola, FL H. R. Hammers, J. Debicella, and A. B. Shortelle, Ph.D. MACTEC Engineering and Consulting Inc., Newberry, FL

The CWA requires USEPA to ensure that the location, design, construction and capacity of cooling water intake structures (CWIS) reflect the Best Technology Available (BTA) for minimizing adverse environmental impacts. Preparation of Comprehensive Demonstration Studies (CDS) in compliance with Section 316(b) of the federal Clean Water Act (CWA) was

performed for three facilities are located

electrical power-generating on diverse waterbodies: a

facilities on the freshwater river,

Florida panhandle. an estuarine river,

These and an

estuarine bay. measure rates

Field studies have been conducted for over one year to evaluate the resources, of impingement and entrainment at each facility. At the freshwater site, fish

and and

shellfish impingement rates impinged. At the site on the

were low.

Hogchoker

tidally

influenced

river,

and blue gill were the dominant fishes fish and shellfish impingement rates were

relatively low and episodic. Crabs and penaeid shrimp accounted for the total impingement. The estuarine bayside facility impinged more

greater species

than than

60 percent of the other two

sites. Shellfish dominated both impingement evaluated for seasonal and diel patterns, and to being conducted to estimate survival and the

and entrainment at this facility. Data were estimate annual rates. Additional studies are potential benefits of existing as-built CWIS

configurations and operational measures coupled minimize adverse impacts to fish and shellfish.

with

new

technologies

at

these

facilities

that

________________________________________________________________________

NOTES

Session 3 – Page 5

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