B 

# 10, 

# 1992 6E0110 Mr Roy Schrameck Surface Water Quality Supervisor Michigan Department of Natural Resources 38980 

# 7

# Mile Road Livonia, MI 48152 DearMr 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 forminimizing environmental impact at the JRWhiting Plant. This report fulfills the requirement of John A 

# Gulvas SeniorAquatic 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 TheWater 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 

# ImDinqementResults 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 impingementwith net 

# in operation compared to no deterrent net 

# was again exempl

# ifi

# ed by 1991

# deterrent net performance. The consistentreduction 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 thewater surface, any damage to the net, 

# if the net is stained, or if 

# there is 

# debris on the net. Net strain and debriswere the most common observations during 1991 

# and served as an indicator for net maintenance. The daily surface inspections document whether the net

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