Dietz Kellmann

Doyon Utilities LLC provides water, sewer, heat and electricity systems contracting services The firm provides support services to the operation and maintenance of the electric, natural gas, steam and potable water distribution systems, as well as the wastewater collection system. The company was founded in 1997 and is headquartered in Fairbanks, AK.

Corix Group of Cos. provides wastewater treatment services. The firm’s water products include drainage, engineered products and packaged systems, geosynthetics, HDPE, industrial and mining, irrigation, mechanical, meters, municipal water and wastewater, pumps, and valves. It provides measurement and control equipment to the oil, gas, industrial and municipal markets. The company was founded in 2006 and is headquartered in Vancouver, Canada.

Les Plastiques Desmarais P&F, Inc. specializes in high density polyethylene (HDPE) piping, valves and fittings. The firm’s products include tuyaux, raccords, valves and geptextiles. The company is headquartered in Boisbriand, Canada.

TriSummit Utilities, Inc. engages in the distribution of natural gas. It operates through the following segments: Utilities, and Renewable Energy. The Utilities segment comprises natural gas distribution rate regulated utilities. The Renewable Energy segment manages Mountain Wind Park and river hydroelectric power generation assets. The company was founded in 1954 and is headquartered in Calgary, Canada.