• GMB

    Home Projects Sykesville / Freedom Sewer Study

    Sykesville / Freedom Sewer Study

    Figure 3-1 - Sykesville - Freedom Sanitary Sewer System

    Location Sykesville, MD

    Client Carroll County, Department of Public Works, Bureau of Utilities

    Date of Completion July 2020

    Services #Consulting #Water / Wastewater Engineering

    Sectors #Asset Management #Consulting #GIS & Drone Services #Government #Infrastructure #Wastewater Systems

    The Sykesville / Freedom Sewer Study project is the first project to comprehensively study and evaluate the entire sanitary sewer collection and conveyance system flowing to the Freedom District Wastewater Treatment Plant.  The project is comprised of five (5) major tasks – geographic information system (GIS), flow metering program, hydraulic modeling, infiltration and inflow (I&I) field investigation and locating “missing” manholes.

    Geographic Information System (GIS):  The GIS was central to all of the tasks performed on the project such as determining locations for flow meters and rain gauges, breaking down flows into sewage, infiltration, and inflow components, developing future flow projections for hydraulic modeling, assessing I&I severity, performing I&I field investigation, identifying “missing” manholes for field locating, and other vital tasks.

    Flow Metering Program:  Fourteen (14) flow meters and three (3) rain gauges were deployed throughout the sewershed to collect current flows through the sanitary sewer system.  These flows were then analyzed to break them down into their separate components of sewage, groundwater infiltration (“infiltration”), and rainfall-dependent infiltration and inflow (“inflow”) for use in the hydraulic model and for I&I field investigation.  For the hydraulic model, each of the three components were analyzed further in order to develop the diurnal pattern for the sewage, the maximum infiltration, and the rainfall-to-inflow response.

    Sanitary Sewer Hydraulic Modeling:  Based on information from the GIS (manholes and pipes) and the Flow Metering Program (flows and temporal patterns), the sanitary sewer hydraulic model was first calibrated and then simulated under “design rainfall event” flow under current flows and future flows in order to identify segments with insufficient capacity.

    Infiltration and Inflow (I&I) Field Investigation:  Comparing the infiltration and inflow components from the Flow Metering Program to the information available in the GIS, the areas with the greatest degree of infiltration and the areas with the greatest degree of inflow were identified and ranked in severity.  Field investigation techniques such as Closed-Circuit Television (CCTV) inspection, manhole inspection, smoke testing, etc. were then directed to areas of high infiltration and/or high inflow in order to locate specific sources which can then be eliminated.

    Locating “Missing” Manholes:  The County had a number of off-road, or otherwise difficult to locate manholes that were included for field locating and surveying as part of the project.  Services provided:  GIS, Flow Metering, Hydraulic Modeling, I&I Investigation and Report

    Explore Our Work

    Sussex County Emergency Medical Services

    Sussex County Emergency Medical Services (SCEMS) has been very satisfied with the quality of GMB’s work and we look forward to working with the firm for years to come.  In addition, GMB engineers and architects take a personal interest in the betterment of our community.

    Robert (Bobby) Schoonover, AA, NRP
    EMS Manager of Logistics
    Sussex County Emergency Medical Services

    Harper & Sons, Inc. 

    For over 35 years, our firm has appreciated the outstanding engineering and architecture that GMB can be trusted to deliver. Project after project, we have found their designs to be sound and thoughtful. We’ve experienced the same successful outcomes while executing design-build and traditional general contracted projects – a ‘nuts and bolts’ design approach with excellent constructability, functionality, and pleasing atheistic that benefit both the constructor and project owner. We highly recommend GMB for any commercial, institutional, or civil construction project.

    Benson Harper
    Vice President
    HARPER & SONS, INC.

    Blue Water Development

    We enjoy, trust and consider GMB our go-to engineering firm.  They are a true partner, always bringing value-engineering solutions to every project.

    Todd Burbage
    CEO
    Blue Water Development

    Town of Millsboro

    Andrew Lyons and the team at GMB are a pleasure to work with.  They are prepared and proactive, always looking out for their client’s best interest.

    Jamie Burk
    Town Manager
    Town of Millsboro

    Choptank Community Health System, Inc.

    We recently finished the second of three projects for which GMB won the bids in the last four years.  I would like to thank Morgan Helfrich, Deane Townsend, and the entire GMB Team for their attention to detail, great communications skills, and mindfulness of budget. They are impressive to watch as they make great progress in the development of construction documents for our newest facility in Federalsburg. I look forward to the continued utilization of their knowledge, experience, and architectural skills to complete our Federalsburg project.  I highly recommend GMB to anyone contemplating a building or renovation project of any size.

    Brett Meyers
    Facilities Director
    Choptank Community Health System, Inc.

    Carroll County Utilities

    We are thrilled with the current operation of the new Hampstead Wastewater Treatment Plant designed by GMB. The operator’s level of stress has dropped dramatically since the upgraded plant has become fully operational.

    Andrew C. Watcher
    Bureau Chief
    Carroll County Utilities

    Town of St. Michaels, MD

    In 2020, GMB completed a DNR funded Harbor and Stormwater Infrastructure Study for the Town of St Michaels. This valuable study projected the flooding and sea level rise by 2050 and then identified at risk areas and associated mitigation strategies for our main harbor and adjacent infrastructure. This was the valuable foundation the Town Commissioners needed for their planning and developed community awareness and support. Building on this study, the Town of St Michaels created the Climate Change/ Sea Level Rise Commission to pursue grants to implement these mitigation plans. Thanks to GMB’s study, the Town has been successful in pursuing grant funding.

    Roy Myers
    Chair, Waterways Management Advisory Board
    Town of St. Michaels, Maryland

    The City of Seaford, Delaware

    GMB routinely deploys a highly efficient design team that places a high emphasis on problem-solving, client needs, and budget goals. Based on my past professional experiences with GMB, I would highly recommend this firm.

    Charles Anderson
    City Manager
    The City of Seaford, Delaware

    Ready to Take the Next Step?

    Contact Us to Learn More About How We Can Help with Your Next Project

    Get in Touch

    Footer

    Designing the Future Since 1960
    LinkedIn