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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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 37. PROJECT:Greybull Tank
LEVEL:New Application
SPONSOR:Town of Greybull
LOCATION:Big Horn County
PROGRAM:New Development

The town system consists of an infiltration gallery, two flowing wells, two tanks with 1.3 million gallons of storage, and a number of manual and automatic control valves. The town is under administrative order from EPA for violations of the Surface Water Treatment Rule associated with the diversion through their infiltration gallery on Shell Creek. EPA has also expressed concern with the town having all its storage on the east side of the Bighorn River, with none on the west side of the river and therefore, being vulnerable to a line failure crossing the river.

The Level II study identified several needed improvements to the Shell Creek transmission pipeline. These improvements were incorporated into a Level III rehabilitation project for the town. However the EPA concerns only recently surfaced.

A Level II evaluation could answer the questions regarding the tanks and the potential of connecting the area to the southwest.

The Commission recommends that the project be accepted into the New Development Program at Level II with an appropriation of $55,000.

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