Case Study Overview

• Project: Wastewater Treatment Facility Upgrades and Collection System Improvements
• Type: Wastewater Management
• Location: Mount Vernon, Oregon
• Scope: Wastewater treatment facility upgrades, collection system improvements, and development of a Hauled Waste Management Plan
• Role of HECO Engineers: Design, specifications preparation, construction contract administration, part-time on-site observation, and development of a hauled waste plan
• Outcome: Enhanced wastewater treatment facility operations, improved collection system, and compliance with DEQ standards

Services Provided by HECO Engineers

• Preliminary engineering
• Condition assessment
• Project management
• Title I and II Design
• Title III Construction Administration
• Preparation of O&M manual
• Development of Hauled Waste Management Plan

Problem

The City of Mount Vernon needed comprehensive upgrades to its aging wastewater treatment facility and improvements to the gravity sewer collection system. The existing infrastructure was inadequate for handling wastewater treatment demands, requiring significant upgrades to meet Oregon DEQ and funding agency requirements.

• The wastewater treatment facility lacked modern equipment for monitoring and processing influent.
• The collection system experienced issues with gravity sewer segments, requiring rehabilitation and extensions.
• A hauled waste management plan was necessary to comply with DEQ requirements for accepting wastewater from septic tank pumping trucks.

Solution

HECO Engineers provided a complete engineering solution, addressing both the facility and collection system needs, while ensuring compliance with DEQ standards.

• Designed and prepared plans and specifications for wastewater facility upgrades, including the addition of an influent flow measurement system, fine screen, and lift station.
• Assisted the City with bidding and negotiations, helping secure a suitable contractor for the project.
• Provided construction engineering services, including project management, construction submittals review, and on-site observation to ensure the project followed the approved plans.
• Developed a Hauled Waste Management Plan to meet DEQ requirements, allowing the facility to continue accepting septic truck waste.

Results

The upgrades and improvements carried out by HECO Engineers resulted in a modernized and more efficient wastewater treatment facility that meets regulatory standards and serves the community effectively.

• Improved wastewater treatment facility operations with the installation of new influent monitoring equipment, valves, and a degreasing system.
• Successful extension and rehabilitation of gravity sewer mains on Farra Ln./Rimrock Ln.
• Enhanced reliability of the system through upgraded electrical controls, generator installation, and lagoon level measurement systems.
• Compliance with DEQ regulations for hauled waste through the development of a Hauled Waste Management Plan.
• A prepared O&M manual ensures the City’s wastewater operators have clear guidance for maintaining the upgraded facility.

Commitment to Efficient Waste Water Solutions

HECO Engineers’ work on the Mount Vernon wastewater treatment facility upgrades and collection system improvements demonstrates our commitment to delivering effective engineering solutions that enhance community infrastructure. Our comprehensive approach ensured both regulatory compliance and long-term operational efficiency for the City of Mount Vernon.

If you need similar services or a free 30-minute review of your upcoming project, contact HECO Engineers today!

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