B 

10, 1992 6E0110 

Mr Roy Schrameck 

Surface Water Quality Supervisor 

Michigan Department of Natural Resources 

38980 7 Mile Road 

Livonia, MI 48152 

Dear Mr Schrameck 

The 1991 annual report describing the performance of the deterrent net system 

at the JRWhiting Plant is enclosed. 

Order No 2010 and demonstrates that a deterrent net system continues to be the 

best technology available for minimizing environmental impact at the JRWhiting 

Plant. 

This report fulfills the requirement of 

John A Gulvas 

Senior Aquatic Biologist 

Environmental Department 

CC AWright, MNDR Fisheries Div, Lansing 

PZugger, MDNR, Lansing 

BCC PCHittle, P-12-117A 

TStBernard, Whiting 

ATUdrys, M-1023 

0792-13.JAG 
TABLE OF CONTENTS 

SUMMARY OF DETERRENT NET PERFORMANCE 

I. INTRODUCTION 

11. FISH IMPINGEMENT AND DETERRENT NET EFFECTIVENESS - 1991 

A. 1991 Imoinqement Results 

B. ComDarisons of Annual Estimated Imoinqement 

111. SUMMARY OF SURFACE INSPECTION - 1991 

IV. SUMMARY OF SUBSURFACE INSPECTIONS - 1991 

V. SUMMARY OF DETERRENT NET OPERATING AND MAINTENANCE ACTIVITIES - 1991 

JRW -ANNUALREPT 
I. INTRODUCTION 

The Water Resources Commission (WRC) Final Order No 2010 issued on 

July 19, 1982 requires the installation of a deterrent net as the best 

technology available to minimize environmental impact at the J R Whiting 

Plant. The order also required monitoring, verification and reporting 

of deterrent net performance which began in October 1982. 

Based on the demonstrated and reported performance of the deterrent net 

since 1982, the Commission has found that the deterrent net continues to 

be the best technology available for minimizing environmental impact at 

J R Whiting. 

performance covers the period from January 1991 through December 30, 

1991. 

This 1991 annual report of 3 R Whiting deterrent net 

3RW -ANNUALREPI' 
11. FISH IMPINGEMENT AND DETERRENT NET EFFECTIVENESS - 1991 

A. 1991 ImDinqement Results 

The estimated total number and weight of all species collected by 

month during 1991 are presented in Tables 1 and 2. The estimated 

total number impinged for 1991 was 316,575, weighing approximately 

6,120 kg. 

B. ComDarisons of Annual Estimated ImDinqement 

The comparison of 1991 estimated impingement to annual estimates 

from 1978 to 1991 is shown in Figure 1. 

fish impingement with net in operation compared to no deterrent net 

was again exempl if i ed by 1991 deterrent net performance. 

The consistent reduction in 

JRW-ANNUALREPT 
111. SUMMARY OF SURFACE INSPECTION -1991 

Daily surface inspections were completed by Plant operations staff 

throughout 1991 and the daily results have been reported with each 

monthly report. 

is at the water surface, any damage to the net, if the net is stained, 

or if there is debris on the net. Net strain and debris were the most 

common observations during 1991 and served as an indicator for net 

maintenance. 

The daily surface inspections document whether the net 

JRW-ANNUALREPT 
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