Raw Water Intake Improvements

INSIDE THE PROJECT

The Kokosing team worked to upgrade the plant’s existing raw water intake system and low-head dam. The intake improvements focused on the facility’s debris removal and flow-control systems. The selected alternative included design of a new bar rack and rake to allow automatic cleaning of the bar rack and improved debris handling. A new retaining wall structure also was included in the project and is integrated with the rake. The retaining wall improves the stability of the river bank adjacent to the intake. Utilizing divers, Kokosing installed new water intake screens to work in conjunction with the new gripper rake mechanical cleaning system.

WHY IT MATTERS

The result is an intake system that virtually eliminates the need for plant personnel to have to remove river debris from the screens. Along with modifying the new sluice gate stems, guides and electric actuators, Kokosing constructed a massive concrete retaining wall to facilitate the mounting of the gripper rake system’s monorail and supports. Kokosing also installed a new leaf chute to remove debris from the traveling water screens.

The low-head dam portion of the project required an evaluation of the the stability of the low-head dam in the Scioto River, which provides the pool for the intake structure. The Kokosing team recommended significant improvements for the dam. Kokosing then constructed and poured a concrete overlay, which included 1,500 cubic yards of concrete, 350,000 pounds of permanent sheet piling and more than 70 cubic yards of injected grout for stabilization of the dam’s foundation.

Increased Capacity for Growing Population

INSIDE THE PROJECT

In 2004, Delaware County, Ohio was the fastest growing county in Ohio and the 11th fastest growing county in the nation. That same year, the City of Delaware voted to expand/upgrade the Upper Olentangy Water Reclamation Center originally constructed in 1926. Upgrades in 1974 and 1985 had increased capacity to 5.5 million gallons per day (MGD), but it was becoming increasingly difficult to meet growing demands while continuing to ensure the safe discharge of effluent into the Olentangy River, a scenic Ohio waterway. Convinced that a Design-Build delivery system would produce a superior project at a lower cost, the City changed their Charter to include Design-Build as another type of competitive bidding. The expansion/upgrade was completed on schedule.

WHY IT MATTERS

This project protects public health through the discharge of higher quality effluent into the Olentangy River which is classified as an “Exceptional Warm Water Habitat” and a “State Scenic River”. Kokosing provided the operational flexibility to accommodate a Peak Flow Rate of 30 MGD while eliminating the environmental impact of sewer overflows. Through the Design-Build approach, the City has a state-of-the-art wastewater treatment facility designed for operational efficiency and flexibility.

Major Water Improvements in Pittsburgh

INSIDE THE PROJECT

Construction of a new, two story 21,000-square-foot chemical building and installation of all process equipment, tankage, process piping, HVAC electrical and instrumentation/controls. A new pump station was constructed that has four vertical turbine pumps and discharge pipe was laid from the pump station to the Hays Mine treatment plant. The installation of two above-grade precast post-tensioned clearwell tanks was also part of the project. The total project spans over five different sites in the Greater Pittsburgh area.

WHY IT MATTERS

The corridors of all five sites were extremely tight and took a high level of coordination to sequence the construction. These projects all included large diameter buried piping, large volumes of cast-in-place concrete, extensive mechanical piping, and process equipment. Kokosing’s resources provided the power and expertise needed to complete this complex project.

LEED Certified Water Treatment Plant

Inside the project

The Kirtland Pump Station project consisted of modifications involving the rehabilitation of four of the six existing 3,000 HP 40MGD pumps, replacement of the other two existing pumps with new 15MGD and 10MGD pumps, rebuilding large diameter butterfly valves in place, replacing and upgrading the medium voltage starters, adding power monitoring, and architectural modifications. The Specialty Maintenance Building construction involved extensive sustainable construction and associated documentation to achieve LEED Silver certification.

Why it matters

The project was the first LEED-certified pump station built in the State of Ohio. The project was completed on time and within budget and was awarded AGC’s Build Ohio Award.

 

Guaranteed Savings Contract Delivery in Fort Wayne

INSIDE THE PROJECT

This project includes coordination of preconstruction design and improvements to the secondary clarifier hydraulics, digester systems, sludge pumping and methane compression systems. Kokosing Industrial’s key staff included wastewater construction experts who quickly gained a working knowledge of how the City’s Water Pollution Control Plant operated and they collaborated with the team to deliver value to the City.

WHY IT MATTERS

In partnership with the City, Kokosing Industrial prequalified and engaged numerous Fort Wayne contractors to complete the project. In addition, Kokosing Industrial locally hired some project staff, thus expanding our associate base in Fort Wayne.

Updates for Cleaner Water

INSIDE THE PROJECT

The Three Rivers Filtration Plant finished water reservoirs that were strengthened and improved and other upgrades were completed to meet regulatory requirements and provide a reliable potable water system for the community. Our approach to the Three Rivers Filtration Plant project was to accomplish the reservoir improvements strengthening the reservoir, constructing the various gatehouses, installing the bypass, making the modifications to the High Service Discharge piping, and sequentially performing the work inside each reservoir.

WHY IT MATTERS

Kokosing ensured that water service to the residents of Fort Wayne was not impacted. Kokosing completed a 3D model showing the construction sequence for the critical piping and equipment on the project. To integrate the two major facets of the project, we incorporated the hydraulic connections to the new UV Disinfection facility during the two Filtered Water outages. This project was completed in excess of $600,000 below the Guaranteed Maximum Price – and the City solely benefited from the cost savings.

Eliminating Sewer Overflows Protects the Environment

INSIDE THE PROJECT

Minimizing sewer overflows requires change, and Euclid entrusted Kokosing to help them make the changes to their system.  The project includes construction of a new headworks facility, retrofitting the existing treatment process tanks with the new membrane bioreactor system, a new wet weather equalization tank and relief sewer. The construction of the Edgecliff Relief Sewer provides emergency bypass for peak flows beyond design capacity, and the new headworks complex will provide coarse screening, fine screening, grit and grease removal and flow metering. Additionally, the project includes improvements to process piping, pumping equipment, electrical systems, control systems and site work.

WHY IT MATTERS

Many communities are working to eliminate sewer overflows during rain events or other times of system overcapacity.  The City of Euclid is working to tackle this same issue in their own system. Kokosing’s experience in constructing and restoring wastewater treatment plants spans decades and contributes to our ability to provide innovative insights on projects, such as this one for the City of Euclid.  The Construction Manager at Risk (CMAR) model allowed Kokosing to add value by evaluating scope options, constructability and the budget during all phases of the project.

Project Wins 2019 Build Ohio Award

INSIDE THE PROJECT

During the four-part project at the Dublin Road Water Plant, Kokosing completed a comprehensive plant upgrade that impacted nearly all parts of the complex facility. The improved facility included reconstructed filters, substantial plant instrumentation and control modification, a new lime sludge pump station, major electrical upgrades, new recarbonation and ozone contact systems, a new ion exchange facility, as well as site parking, landscaping and drainage improvements. Special care was given to complete all of the work, while maintaining uninterrupted plant operation.

WHY IT MATTERS

The Dublin Road Water Treatment Plant is one of three plants that serve the 1.1 million residents of Columbus, Ohio and several surrounding communities. It is essential for public health that their facilities are up to date and running smoothly. Kokosing is helping the City fulfill its goal of ensuring that safe water is available at a volume that supports the health, safety, nutritional, recreational and business needs of Central Ohio.  Completing this work at a highly visible site in downtown Columbus afforded Kokosing a great opportunity to showcase our capabilities to a valued client and our community.

Kokosing Industrial was awarded the AGC of Ohio 2019 Build Ohio Award in the Industrial / Heavy Category for this project.

Ensuring a Cleaner Future

INSIDE THE PROJECT

Kokosing was selected by a private utility service company for two, unit price Septic Tank Elimination Projects (STEP) located on the south-side of Indianapolis. The projects consist of installing sanitary sewer, sanitary force main and a new lift station which together will serve over 350 homes. In addition, both projects consist of installing traffic control, laterals to the homes, trucking/hauling, utility relocations, asphalt paving and site restoration.

WHY IT MATTERS

Always a community leader improving the quality of life, the efforts of our client to convert neighborhoods that use septic systems to sanitary wastewater systems supports the health and safety commitment to the local community.