On behalf of the City of Alakanuk (City), The State of Alaska, Department of Environmental Conservation, Village Safe Water Program (department) is soliciting a Request for Proposals (RFP) for a contractor to design two (2) separate designs for the City. Design 1 - Surface Water Intake: Surface Water Intake, Raw Water Transmission Line, and Utility Box Deficiencies: Alakanuk’s piped water system was installed in the 1990’s. The surface water intake sits about 160 feet away from the river’s edge and, in the winter, it lies on river ice. The chilled water withdrawn from the river does not have the benefit of heat to protect it from freezing for the first 160 feet, until it reaches the utility box, at which point the glycol heat trace can keep the water warm. The grading of the intake transmission line and heat tape malfunctions have contributed to the intake freezing. When the intake freezes up, the circulation loops freeze up also, causing complete blockage of the intake transmission line...
