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Wyoming Water Development Commission 
Harry C. LaBonde, Jr., PE, Director 
6920 Yellowtail Rd, Cheyenne, WY 82002 
Phone: 307-777-7626 

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 57. PROJECT:Lander Water Supply
SPONSOR:City of Lander
LOCATION:Fremont County
PROGRAM:New Development
Purpose Chapter Session Account Appropriation Due Date
Level I 8 1995 I $100,000 1996
Level II 46 1997 I $175,000 1998

Growth in the city and the surrounding area prompted the city to request analysis of their problems. The rural areas around Lander typically obtain their water from wells, which are of poor quality and quantity, or they haul their water from Lander. Several areas, including Tweed Lane, south of Lander, northeast of Lander, and Baldwin Creek, have approached the city requesting water service. However, the city was uncertain whether their system could reliably meet these and other future water service demands. A Level I master plan was completed to serve as a planning tool to respond to these requests.

The Level I study assessed the physical and economical limits of the existing system to serve an expanded service area. The study determined the water supply needs of that area, and evaluated the capability of Lander's existing water supply to meet those needs. The study made recommendations regarding the upgrading that will be required before the city can serve the rural areas. The study developed preliminary designs and cost estimates for the facilities identified as needing improvements. The city prioritized the system improvements and requested a Level II evaluation of the supply line to the treatment plant, enlargement of the treatment plant, and additional storage at the treatment plant and near the city. The infiltration gallery was also evaluated. The infiltration gallery provides a large portion of the total supply to the city and has been declared under the influence of surface water and because of the EPA Surface Water Treatment Rule must be filtered. Three stratigraphic test holes were drilled to test the depth of the alluvium and its potential for development. These improvements were viewed by the city as being necessary to position its self to serve the surrounding area.

The sponsor requested that the Level II analysis be expanded to include drilling and testing the yield potential and quality of the alluvium in the area near the infiltration gallery and near the treatment plant.

The WWDC recommends that the project remain in Level II status and the appropriation be increased by $100,000 for drilling and testing two sites.

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