Gridor Construction, Inc.

MN Projects

East Waste Water Treatment Facility Phase 3

Otsego, MN

Contract: $9,363,765.00

Completed: November 2006

Scope: Expansion of existing Waste Water Treatment Plant Facility including Oxidation Ditches, Final Clarifiers, UV Disinfection Equipment, Gravity Belt Thickener, Aerobic Digesters, Aeration Equipment, PD Blowers, Expanded Plant from 0.40 MGD to 1.0 MGD Average Daily Flow.

Sludge Storage Improvements Project

Winsted, MN

This project gave the city of Winsted the capability of storing and mixing their sludge in glass-lined storage tanks. This project adds 2 years to their sludge storage capacity, the city plans to add 2 more identical tanks in the future. The project included two large tanks and a lift station, as well as a masonry building (for controls and the mixing pumps) and a precast building (for supernatant and decant sludge work).

Waste Water Treatment Plant

Headworks Improvements

Elk River, MN

Contract: $1,818,603.00

Completed: November 2006

Scope: Demolition and Expansion of Existing Headworks Building, including demo, concrete and new process equipment, New Chemical Treatment Building, New Secondary Digester Cover and Misc Site Improvements.

Water Treatment Plant

#1 Addition

Forest Lake, MN

Contract: $3,105,864.00

Completed: November 2006

Scope: Expansion of Existing Water Treatment Plant including Concrete Clearwell, Masonry Building, Gravity Filter System, including Ion Exchange Softeners, High Service Booster Pumps, Misc Pumps and Chemical Feed Systems and Expanded Plant from 1.5 MGD to 3.0 MGD.

Water Treatment Plant

Hutchinson, MN

Contract: $10,900,000.00

Completed: November 2007

Scope: Construction of New Water Treatment Plant and demolition of existing WTP. New WTP included RO and Biofiltration Processes, Clearwells, High Service Pumps, Chemical Feed Systems and Misc piping and Sitework. Plant Capacity 6.5 MGD

Waste Water Treatment Plant Expansion

Lester Prairie, MN

Contract: $3,794,600.00

Completed: June 2007

Scope: Expansion of existing Waste Water Treatment Plant including: installation of static screen, construction of a concrete selector basin, a concrete oxidation ditch, and a concrete final clarifier, a masonry filter building with pre-packaged filters, a chemical feed system, pumps, interior and exterior process piping, a standby generator, upgraded electrical, instrumentation and controls, new building mechanical systems, site work and rehabilitation of existing structures.

Waste Water Treatment Facility

Harris, MN

Contract: $4,326,202.00

Completed: Spring 2008

Scope: Construction of new wastewater treatment facility to consist of: a Pre-Cast Lift Station, Cast in Place - Concrete Head works channel, Concrete Sequencing Batch Reactor, Concrete and Masonry Control Building, Concrete UV Channel, Concrete Post Aeration Structure, Interior and Exterior Process Piping and Pumps, Chemical Feed System, Aeration Systems, Piping and Blowers, Instrumentation and Controls, Electrical and Mechanical Systems, Utility and Street improvements.