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TABLE OF CONTENTS <br />EXECUTIVE SUMMARY <br />SECTION 1.0 INTRODUCTION <br />1.1 Purpose...........................................................................................................................5 <br />1.2 Report Organization.......................................................................................................5 <br />SECTION 2.0 ELK RIVER WASTEWATER TREATMENT AND CHARACTERISTICS <br />2.1 Elk River Wastewater Treatment Facilities...................................................................6 <br />2.2 Service Area...................................................................................................................6 <br />2.3 Flow...............................................................................................................................6 <br />2.4 Load...............................................................................................................................8 <br />2.5 Allocated Treatment Capacity........................................................................................9 <br />SECTION 3.0 WASTE MANAGEMENT LEACHATE CHARACTERISTICS <br />3.1 Waste Management Leachate Collection and Storage Facilities.................................11 <br />3.2 Typical Landfill Leachate Characteristics....................................................................11 <br />3.3 Elk River Landfill Leachate Characteristics................................................................11 <br />SECTION 4.0 LEACHATE TREATMENT EVALUATION <br />4.1 General.........................................................................................................................14 <br />4.2 Collection System Concerns........................................................................................14 <br />4.3 Hydraulic and Organic Treatment Capacity.................................................................14 <br />4.4 Biological Treatment Performance..............................................................................15 <br />4.5 UV Disinfection System Performance.........................................................................16 <br />4.6 Biosolids Characteristics and Quantity........................................................................17 <br />4.7 Comparative Combined Treatment Faciltiies..............................................................17 <br />SECTION 5.0 LEACHATE CONVEYANCE ALTERNATIVES <br />5.1 General.........................................................................................................................19 <br />5.2 Forcemain Options.......................................................................................................19 <br />5.3 Flow Monitoring..........................................................................................................19 <br />SECTION 6.0 RECOMMENDATIONS AND IMPLEMENTATION <br />6.1 Recommended Wastewater Treatment Improvements................................................21 <br />6.2 Permitting.....................................................................................................................21 <br />6.3 Implementation Schedule.............................................................................................22 <br />City of'Elk River, Minnesota — T21.109643 Page i <br />Elk River/Waste Management Leachate Study Prepared by Bolton & Menk, Inc. <br />