INTRODUCTION:

Chugach Alaska Corporation (C.A.C.) currently obtains water from a nearby waterfall located on the north side of Constantine Bay.  The procedure of providing water to the Nuchek campsite currently involves the use of skiffs (small boats with an outboard motor).  The skiffs transport containers resembling agricultural water totes to contain the water, to the waterfalls location.  The actual process of obtaining the water from the waterfall is currently an unsafe and laborious responsibility.  Chugach Alaska Corp. would like to eliminate this laborious and unsafe procedure, allowing personnel to free up time for other responsibilities.   

There are currently three wells which combined, provide approximately 100 gallons per minute at the Nuchek “Spirit Camp” location.  The quality of water from these wells is frequently poor due to high turbidity, and iron content.  The Chugach Alaska Corp. would like to be able to have clear potable water on tap at the campsite.

 DESIGN CRITERIA

 The technical criteria or the design of the water supply system are mainly determined by the needs and requests of the client.  The main factor coming out of these requests will be of great influence to the design of the quantity of water needed in the village.  This can be seen as the primary technical design criteria.  Secondary technical criteria for the design will be water quality, resources of materials in the region and the duration over which the installation will be used, that is, the labor involved.

 Water quantity:

The water supply system needs to provide water for approximately 100 persons every day from April to October.  Assuming that 50 gallons/person/day of water are consumed, the water supply system must deliver 5000 gallons/day (gpd) to the camp.

Water quality:

The water quality when the water is available to the consumers in the camp must meet the standards according to National Primary Drinking Water Regulations.

 Resources of materials:

The (dis)assembling of the water supply system before/after the season must be possible manually with a small labor force.

A water collection and transport system will be designed for the camp site of Nuchek.  Water will be collected from the nearby waterfall and transported for approximately one mile.  The water will then be stored in underground storage tanks and used for potable purposes.  An on-site treatment facility will be integrated with the water storage system.