Remedial Action Plan
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Michigan Department of Natural Resources Remedial Action Plan for SAGINAW RIVER AND SAGINAW BAY Area of Concern September 1988 Michigan Department of Natural Resources Surface Water Quality Division Great Lakes and Environmental 'Assessment Section P.O. Box 30028 Lansing, Michigan 48909 PREFACE This Saginaw RiverIBay Remedial Action Plan (RAP) was prepared by the Michigan Department of Natural Resources (MDNR) from a first draft compiled for MDNR by the East Central Michigan Planning and Development Region, the National Wildlife Federation, and graduate students from the University of Michigan. The Remedial Action Section was prepared by MDNR and a regional public organization known as the Saginaw Basin Natural Resources Steering Committee. Public and technical comment was received throughout the RAP development and review process as described in Section VI. The RAP summarizes existing water quality data on the Saginaw Bay drainage basin and outlines initial perceptions of the remedial actions that should be taken to further address the eutrophication and toxic material problems in the Saginaw River and Saginaw Bay. The remedial actions presented here will be further refined in future versions of the RAP, which it is anticipated, will be periodically updated and revised as more data are acquired, remedial measures are implemented, and environmental conditions improve. ACKNOWLEDGEMENTS An extensive list of people and agencies contributed a great deal of time and effort to develop this plan. The complete list is too extensive to present here, but the following four organizations deserve special recognition: -- The East Central Michigan Planning and Development Region who compiled the September 1, 1987, first draft of this plan and prepared Sections I1 and VI of that draft; -- The National Wildlife Federation who prepared Sections I11 and IV of the first draft; -- The Saginaw Basin Natural Resources Steering Committee who helped prepare Section VII of this plan; and - - The Saginaw River/Bay RAP Technical Work Group who reviewed working drafts of the RAP for technical merit. iii TABLE OF CONTENTS Preface ............................................................ i Acknowledgements ................................................... iii Table of Contents .................................................. v List of Tables ..................................................... xiii List of Figures .................................................... xxi EXECUTIVE SUMMARY .................................................. xxxi SECTION I .. INTRODUCTION.......................................... SECTION I1 .. ENVIRONMENTAL SETTING A . LOCATION AND SIZE ........................................ B . HYDROLOGY ................................................ 1 . Circulation ......................................... 2 . Water Levels ........................................ 3 . Flow ................................................ 4. Precipitation ....................................... TOPOGRAPHY AND SOILS ..................................... D . LAND USE ................................................. 1 . Agriculture ......................................... 2 . UrbanIIndustrial .................................... 3 . Extractive .......................................... 4 . Waste Disposal ...................................... 5 . Wildlife Habitat and Recreational Lands ............. E . WATER USE ................................................ 1 . Fish and Wildlife Habitat ........................... 2 . Water Supply ........................................ 3 . Commercial Fishing .................................. 4 . Sport Fishing ....................................... 5 . Contact Recreation .................................. 6. Noncontact Recreation ............................... 7 . Commercial Navigation ............................... 8 . Waste Disposal ...................................... SECTION I11 .. PROBLEM DESCRIPTION A . WATER QUALITY STANDARDS .................................. 1 . Surface Water ....................................... a . Michigan ....................................... b . U.S. Environmental Protection Agency ........... c . Great Lakes Water Quality Agreement of 1978 .... 2 . Drinking Water ...................................... 3 . Groundwater ......................................... B . IMPAIRED USES ............................................ C . PHYSICAL WATER QUALITY ................................... 1 . Temperature ......................................... 2 . Dissolved Oxygen .................................... a . Saginaw River and Tributaries .................. b . Saginaw Bay Tributaries ........................ c . Saginaw Bay .................................... 3 . Biochemical Oxygen Demand ........................... 4 . Taste and Odor ...................................... a . Definition ..................................... b . Saginaw-Midland Water Intake ................... c . Bay City Water Intake .......................... d . Pinconning Water Intake ........................ 5 . Saginaw Bay Turbidity ............................... 6. Suspended Solids .................................... 7 . Total Solids ........................................ D . CHEMICAL WATER QUALITY ................................... 1 . Data Introduction ................................... 2 . Phosphorus .......................................... a . Saginaw Bay .................................... b . Rivers ......................................... 3 . Nitrogen ............................................ a . Saginaw Bay .................................... b . Rivers ......................................... 4 . Silica .............................................. 5 . Chloride ............................................ 6. Metals .............................................. a . Introduction ................................... b . Saginaw Bay .................................... c . Tributaries .................................... i . Arsenic .............................. ii . Cadmium .............................. iii . Chromium ............................. iv . Copper ............................... v . Iron ................................. vi . Lead ................................. vii . Mercury .............................. viii . Nickel ............................... ix . Selenium ............................. x . Silver ............................... xi . Zinc ................................. 7 . Organic Contaminants ................................ a . Saginaw Bay .................................... b . Tributaries .................................... i . Phenols .............................. ii . Polychlorinated Biphenyls ............ iii . Polybrominated Biphenyls ............. E . SEDIMENT QUALITY ......................................... 1 . Contaminant Levels in River Sediments ............... a . Shiawassee River ............................... i . South Branch ......................... ii . Corunna/Owosso Area .................. b . Cass River ..................................... c . Flint River .................................... d . Tittabawassee River ............................ e . Pine River ..................................... f . Saginaw River .................................. 2 . Saginaw Bay Sediments ............................... a . Deposition Rates ............................... b . PCBs ........................................... c . Metals ......................................... F . BIOLOGICAL COMMUNITIES ................................... 1 . Phytoplankton and Chlorophyll ....................... a . Phytoplankton .................................. b . Chlorophyll -a .................................. c . Trophic Status ................................. 2 . Zooplankton ......................................... a . Rotifers ....................................... b . Crustacean Zooplankton......................... c . Rotiferan and Crustacean Zooplankton Comparisons .................................. 3 . Macrozoobenthos ..................................... a . Saginaw River .................................. b . Saginaw Bay .................................... i . Navigation Channel ................... ii . Saginaw Bay Proper ................... c . Changes in Trophic Status ...................... d . Vertical Distribution of Benthic Macro- invertebrates................................ G . BIOTA CONTAMINATION AND IMPACTS .......................... 1 . Contaminant Levels in Biota ......................... a . Phytoplankton .................................. b . Macrozoobenthos ................................ i . Pine River ........................... ii . Saginaw River ........................ c . Macrophytes .................................... d . Fish ........................................... i . Consumption Advisories ............... ii . Shiawassee River ..................... iii . Cass River ........................... iv . Tittabawassee River .................. v . Chippewa River ....................... vi . Pine River ........................... vii . Saginaw River ........................ viii . Saginaw Bay .......................... e . Birds .......................................... i . Herring Gulls ........................ ii . Common Terns ......................... iii . Double-crested Cormorants ............ iv . Black-crowned Night Herons ........... v . Ducks ................................ 2 . Contaminant Impacts