Current Projects - TEK Construction, Inc.
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Leavenworth National Fish Hatchery - Pilot Circular Tanks

Leavenworth, Washington



Project Manager: Dean Irwin

Superintendent: Craig Conrad

Contract Amount: $6,710,625.00

Owner: Bureau of Reclamation

Engineer: McMillen Jacobs

Project Start: October 2020

Project Completion: Summer 2021

Job Description: The work of this Contract comprises the construction of a water supply and drain system that will connect to the existing Leavenworth National Fish Hatchery infrastructure and provide required piping for the operation of a partial reuse aquaculture system (PRAS). Demolition of the northern bank of Small Foster Lucas Pond raceways is required to allow for the installation of two (2) circular tank PRAS. Each PRAS is comprised of two (2) 26-foot diameter by 7-foot high dual drain circular tanks, a carbon dioxide (CO2) stripper system, microscreen drum filter, ultra-violet disinfection equipment, low head oxygenators (LHOs), submersible pumps, pump sump, and associated support equipment and piping. The solids handing equipment is comprised of microscreen drum filters, a radial flow separator, solids pumping station, and construction of concrete evaporation ponds and associated support equipment and piping. The circular tank PRAS and solids handling facility will be enclosed in a pre-manufactured metal building.
The installation of new raw water supply piping and ground water piping will be connected to existing water supplies located just outside (west side) of the existing hatchery building. Overflow drain pipes (clean effluent from PRAS) will connect to existing drain manholes. Effluent piping will be routed from the solids handling equipment to either the existing abatement ponds or to the solids handling evaporation ponds.

Harvey Creek Hatchery Improvements

Arlington, Washington



Project Manager: Tyler Irwin

Superintendent: Lorres Golbienko

Contract Amount: $388,930.00

Owner: Stillaguamish Tribe

Project Start: July 2020

Project Completion: Winter 2021

Job Description: Project consists of construction of the following elements: new concrete settling basin, trash rack in existing fish ladder, plumbing and valves from fish ladder to settling basin, plumbing and valves from settling basin to existing filter building.

Bingen Wastewater Facility Improvements

Bingen, Washington



Project Manager: Tyler Irwin

Superintendent: Craig Conrad/Josh Johnson

Contract Amount: $2,612,303.75

Owner: City of Bingen

Engineer: Gray & Osborne

Project Start: July 2020

Project Completion: April 2021

Job Description:

Schedule A includes existing aerobic digester modifications including waste removal and cleaning, furnishing and installing three new blowers, a new fine bubble diffuser aeration system, and installation of one Owner-supplied submersible mixer. The project also includes modifications to an existing oxidation ditch including furnishing and installing new aspirating mixers, instrumentation, and piping; and construction of a new concrete bioselector structure and mixer platform. The project also includes concrete crack and surface repairs to a second oxidation ditch structure as well as all associated electrical work and site restoration. The RAS/WAS VFD and digester submersible mixer replacement work are included as additive bid items.


Schedule B includes the replacement of approximately 1,750 linear feet of existing 10-inch sanitary sewer main with new 18-inch sanitary sewer main, including side sewers; trenchless CIPP (cured-in-place pipe) replacement of approximately 870 linear feet of existing 8-inch and 10-inch sanitary sewer main; manhole rehabilitation and minor repair of approximately 22 existing manholes; and associated restoration work. The CIPP and manhole rehabilitation work is included as an additive bid item.

WWTP Influent Screening Improvements

Concrete, Washington



Project Manager: Tyler Irwin

Superintendent: Lorres Golbienko

Contract Amount: $496,354.95

Owner: Town of Concrete

Engineer: Gray & Osborne

Project Start: August 2020

Project Completion: November 2020

Job Description: The Project includes temporary bypass pumping around an existing manhole, removal and waste-hauling of an existing manhole, piping, fittings, and appurtenances; construction of a below grade concrete channel; installation of a new Rotary Drum Screen within the new concrete channel; connection to the existing potable water system located onsite; installation of a new air gap unit and non-potable water equipment for cross-connection control, installation of both below- and above-grade piping, fittings, and appurtenances; and all associated electrical, telemetry, and systems integration improvements.

Midway Sewer District WWTP Primary Clarifier Improvements

Des Moines, Washington



Project Manager: Tyler Irwin

Superintendent: Lorres Golbienko

Contract Amount: $1,295,000.00

Owner: Midway Water & Sewer District

Engineer: Gray & Osborne, Inc.

Project Start: Spring 2020

Project Completion: Summer 2020

Job Description: This project involves improvements to the existing Primary Clarifiers 1 and 2 and associated inlet channel structure at the Des Moines Creek Wastewater Treatment Plant in Des Moines, Washington. Work shall include removal of both existing primary clarifier mechanisms and associated drive motors, removal of the all four scum skimmer mechanisms and associated drive motors, and removal of the both cross collector
mechanisms and associated drive motors. Work shall also include cleaning, preparation, and coating of both clarifiers as well as the associated inlet channel, installation of two new primary clarifier mechanisms, installation of two new scum skimmer mechanisms, and installation of two new cross collector mechanisms. Work shall include replacement of the existing inlet channel structure air supply piping, drop piping, and sluice gates; along with all necessary temporary bypass pumping. Work must also include core drilling, some concrete modifications, and replacement of piping within the WWTP basement as well as all required electrical modifications.

Payette Lakes WWTF Headworks Improvements

McCall, Idaho



Project Manager: Tyler Irwin

Superintendent: Jess Phillips

Contract Amount: $2,592,000.00

Owner: Payette Lakes Recreational Water and Sewer District

Engineer: J.U.B Engineers, Inc.

Project Start: Spring 2020

Project Completion: January 2021

Job Description: The 2019 Headworks Improvement project is an upgrade to the District’s wastewater treatment plant (WWTP), and generally includes the following:

-Build new screening and grit removal facilities

-Build new headworks building

-Bypass pumping of influent flow

-Demolition of existing 18-inch and 21-inch piping and replace with 21 and 24-inch piping respectively

-Build new junction boxes

-Install new gates in existing junction boxes and reroute flow to new headworks

NAS Whidbey Southern GETR System

Oak Harbor, Washington



Project Manager: Dean Irwin

Superintendent: TBD

Contract Amount: $3,665,000.00

Owner/Engineer: NAVFAC NW

Project Start: Fall 2019

Project Completion: Spring 2021

Job Description:

-Installing a new groundwater treatment system along State Route (SR) 20 that will use advanced oxidation processes (AOP) to remove chlorinated COCs and 1,4-dioxane from extracted groundwater.

-Replacing the existing air stripper treatment system at Area 6 with an AOP system.

Molalla Water Treatment Plant Improvements

Molalla, Oregon



Project Manager: Tyler Irwin

Superintendent: Josh Johnson

Contract Amount: $1,395,000.00

Owner: City of Molalla

Engineer: The Dyer Partnership Engineers & Planners, Inc.

Project Start: Fall 2019

Project Completion: Summer 2020

Job Description: Construction of an additional water treatment unit and all associated piping, equipment, controls, and materials necessary for the complete packaged water treatment unit installation. The package includes:

-One 1,400-gpm treatment unit and associated equipment

-Electrical, controls, and instrumentation

-Chemical feed system modifications

-Replacement of existing backwash pump

-Miscellaneous valves and fittings

-Site piping, supports and appurtenances.

-Replacement of Sodium Hypochlorite tanks, chemical feed line and piping

-Demolition and decomissioning of Filters #3 and #4 and associated equipment, controls, piping & appurtenances

-Install new Cat6 in the WTP, and install new fiber cable between the WTP and Influent Pump Station (IPS)