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Table of Contents <br /> EXECUTIVESUMMARY..................................................................................................................................... ES-1 <br /> CHAPTER1 -INTRODUCTION ............................................................................................................................... 1 <br /> 1.1 Study Objectives...................................................................................................................................... 1 <br /> 1.2 Evaluation Process.................................................................................................................................. 1 <br /> 1.3 Study Area................................................................................................................................................ 1 <br /> 1.4 Water Demand.......................................................................................................................................... 3 <br /> 1.5 Existing Water Infrastructure................................................................................................................. 4 <br /> 1.6 Community Development and System Capacity.................................................................................. 4 <br /> CHAPTER 2-WATER SUPPLY QUALITY AND QUANTITY................................................................................ 7 <br /> 2.1 Mississippi River........................................................................................................................................... 7 <br /> 2.1 a Water Quality......................................................................................................................................... 7 <br /> 2.1b Primary Constituents of Interest............................................................................................................ 7 <br /> 2.1 c Drinking Water Regulated Constituents................................................................................................ 9 <br /> 2.1 d Water Quantity..................................................................................................................................... 10 <br /> 2.2 Groundwater................................................................................................................................................ 10 <br /> 2.2a Regional Aquifers................................................................................................................................ 10 <br /> 2.2b Regional Groundwater Supply............................................................................................................. 10 <br /> CHAPTER 3-CONCEPT REGIONAL DRINKING WATER DISTRIBUTION SYSTEM....................................... 11 <br /> 3.1 Assessment Methods.................................................................................................................................. 11 <br /> 3.1.a Hydraulic Water Model........................................................................................................................... 11 <br /> 3.1.b Basis for Concept Level Costs............................................................................................................... 11 <br /> 3.2 Phased Watermain Approach..................................................................................................................... 11 <br /> 3.3 Lateral Benefit.............................................................................................................................................. 12 <br /> 3.4 Phase A-Scenario 1 Watermain-WTP in Ramsey................................................................................ 12 <br /> 3.5 Phase A-Scenario 2 Watermain-WTP in Dayton.................................................................................. 15 <br /> 3.6 Phase B-Extend Watermain to Corcoran ............................................................................................... 16 <br /> 3.7 Phase C-Extend 36"Watermain to Corcoran......................................................................................... 17 <br /> 3.8 Phase D-Scenario 1 -Complete 36"Watermain Loop-WTP in Ramsey........................................... 18 <br /> 3.9 Phase D-Scenario 2-Complete 36"Watermain Loop-WTP in Dayton............................................. 19 <br /> 3.10 Operation and Maintenance Costs..........................................................................................................20 <br /> CHAPTER 4-REGIONAL SURFACE WATER TREATMENT PLANT(APPROACH 1)..................................... 21 <br /> 4.1 Overview................................................................................................................................................. 21 <br /> 4.2 Surface WTP Locations......................................................................................................................... 21 <br /> 4.3 River Withdrawal Options.....................................................................................................................21 <br /> 4.3a Collector Wells..................................................................................................................................... 21 <br /> 4.3b Direct River Withdrawal Location........................................................................................................ 21 <br /> 4.4 Surface Water Treatment......................................................................................................................23 <br /> 4.5 Estimate of Probable Capital Costs.....................................................................................................23 <br /> 4.6 Estimated Operation and Maintenance Costs....................................................................................24 <br /> CHAPTER 5-REGIONAL GROUNDWATER TREATMENT PLANT(APPROACH 2)....................................... 25 <br /> 5.1 Overview................................................................................................................................................. 25 <br /> 5.2 Groundwater Treatment Plant Location..............................................................................................25 <br /> 5.3 Constituents of Interest........................................................................................................................ 25 <br /> 5.3.a Manganese.......................................................................................................................................... 25 <br /> 5.3.b Aesthetic Standards............................................................................................................................. 25 <br /> 5.4 Treatment Processes............................................................................................................................ 26 <br /> 5.5 Wells........................................................................................................................................................ 26 <br /> 5.6 Estimate of Probable Capital Cost.......................................................................................................26 <br /> 5.7 Estimated Operation and Maintenance Costs....................................................................................27 <br />