B08_DWG_SET_080525.pdf

This document is a project drawing set for the Hogback Pond Dike Repair at the Minnesota Valley National Wildlife Refuge, Long Meadow Lake Unit, located in Hennepin County, Minnesota. The drawing set, identified by Project Drawing Set Code 3R-MN-839-490, was designed by the U.S. Department of the Interior, Fish and Wildlife Service, Midwest Region No. 3, Infrastructure Management Division, and dated 06/12/2025.

The project involves the repair and rehabilitation of the Hogback Pond Dike through three primary bid items: Base Bid Item A (Embankment Rehabilitation), Base Bid Item B (Add Riprap to Existing Water Control Structure), and Bid Additive Items #1 and #2 (Roof and Flared End Section Rehab, and Class 5 Gravel Riprap installation, respectively). The work includes removing existing vegetation, trees, brushes, and roots from embankment areas; placing embankment fill material to a depth of 6 inches at maximum B-height density; installing 15-inch clay liners; constructing riprap sections with Class 5 gravel at 4-inch depth and 12-foot width; and implementing slope erosion control measures. The quantities chart specifies 11,000 cubic yards of embankment fill, 3,333 cubic yards of clay, and 1,333 cubic yards of topsoil. The site plan and typical sections provide detailed cross-sectional views showing existing water control structures, dike elevations, and material specifications for construction purposes. All drawings are presented at various scales (1" = 100' for site plan and 1" = 5' for sections and structure details) to facilitate contractor understanding and bidding.