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2,000 2,500 Date: 11/9/2020 Boonsboro Town Limits and Vicinity Map P FeetFeet 1 inch = 2,500 feet Boonsboro Municipal Utilities Commission (BMUC) • Town of Boonsboro, Maryland Wastewater System Master Plan and Hydraulic Model November 11, 2020 Table of Contents Table of Contents ........................................................................................................................................................ i List of Tables ............................................................................................................................................................... i List of Figures ............................................................................................................................................................. ii Appendices ................................................................................................................................................................. ii 1 Background & Introduction ..................................................................................................................................1 1.1 Town of Boonsboro .....................................................................................................................................1 1.2 Purpose and Objectives..............................................................................................................................1 1.2.1 Scope of Work ........................................................................................................................................2 1.2.2 Data Collection .......................................................................................................................................3 2 Basis of System Assessment ..............................................................................................................................6 2.1 Flow Analysis Summary .............................................................................................................................6 2.2 Model Development and Calibration Summary ..........................................................................................9 2.3 Existing System Updates ............................................................................................................................9 3 Model Development of Buildout Conditions ..................................................................................................... 13 4 Comparison of Existing and Buildout Conditions ............................................................................................. 15 5 System Improvements ...................................................................................................................................... 23 6 Recommendations ........................................................................................................................................... 27 6.1 Development Contributions ..................................................................................................................... 27 6.1.1 Cost Estimates ..................................................................................................................................... 27 6.1.2 Summary of Recommended Improvements ........................................................................................ 28 List of Tables Table 2.1: Basin & Flow Analysis Overview ...............................................................................................................6 Table 2.2: Calibrated Model Overview .......................................................................................................................9 Table 2.3: Pipeline Segments Lined Using CIPP .................................................................................................... 11 Table 3.1: Proposed Development Overview .......................................................................................................... 13 Table 4.1: Peak Flows Under Wet Weather Conditions .......................................................................................... 15 Table 4.2: Buildout Flow Percentage of Contributions by Development ................................................................. 16 Table 4.3: Pipeline Capacity Restrictions for Existing System Under Existing Conditions ..................................... 18 Table 4.4: Pipeline Capacity Restrictions for Existing System Under Buildout Conditions ..................................... 20 Table 6.1: Improvement Cost Estimates ................................................................................................................. 27 Table 6.2: Developer Contributions ......................................................................................................................... 28 Page i Boonsboro Municipal Utilities Commission (BMUC) • Town of Boonsboro, Maryland Wastewater System Master Plan and Hydraulic Model November 11, 2020 List of Figures Figure 1.1: Town of Boonsboro Wastewater System ................................................................................................2 Figure 2.1: Town of Boonsboro System Basin Boundaries ........................................................................................7 Figure 2.2: Town of Boonsboro Sewer System Manhole Identification ......................................................................8 Figure 2.3: Location of Sycamore Run Development .............................................................................................. 10 Figure 2.4: CIPP Lined Segments ........................................................................................................................... 12 Figure 3.1: Proposed Development Tie-In Locations .............................................................................................. 14 Figure 4.1: Pipeline Capacity Restrictions for Existing System Under Existing Conditions .................................... 17 Figure 4.2: Pipeline Capacity Restrictions for Existing System Under Buildout Conditions .................................... 19 Figure 4.3: Hydraulic Grade Line and Depth of Flow from Manhole N34 to Manhole N46: Existing and Buildout Scenario Results ...................................................................................................................................................... 21 Figure 4.4: Hydraulic Grade Line and Depth of Flow from Manholes 62-50, 50-N46, and M1-WWTP: Buildout Scenario Results