A. The work to be completed is as described in Sections 5 of the “Silver Lake Dam Safety Inspection Report” prepared by Verdantas, LLC, dated December 30, 2024 (Revised June 26, 2025). B. Earth Embankment - Upstream Slope 1. Repair the crack on the boat ramp's west side. This crack appeared to be repaired, but a recent crack was observed. 2. Rip rap (1,600 SF) should be added on the east upstream slopes to help with wave action erosion during low lake-level seasons. C. Earth Embankment – Downstream Slope 1. The undermined sidewalk near the fence adjacent to the fish ladder should be remediated/backfilled, as it will be a tripping hazard and could result in additional erosion or depressions. 2. The undermined fence post at the southern end of the chain link fence adjacent to the fish ladder should be remediated. The eroded areas noted in the area of the fence post and the eroded area south of the fence that extends to the exit channel should be remediated. D. Concrete Spillway – Upstream Face and Wing Walls 1. Repair the cracks below water with pressure injected epoxy (7 LF). 2. Field measure, cut and re-adjust rotated fence extension on all wingwalls, and secure to prevent rotation. (7 LF) 3. Bolts should be checked, tightened, and replaced if missing on the railing system. E. Concrete Spillway – Downstream Face and Wing Walls 1. There are three seeps on the east wing wall, under the fish ladder. The seeps appear to be below areas that were previously patched and repaired. The 2023 inspection report also noted these leaks. It is recommended to conduct a resistivity geophysics study to aid in determining the water elevation behind the wall (nondestructive method) before looking into destructive methods of investigation. F. Fish Ladder 1. Repair the leaking joints. 2. Repair the broken weld at the third steel brace from the north. (0.17 LF) 3. Review and tighten all bolts. Replace missing bolts and nuts with stainless steel hardware. (8 total) IFB-3 G. Pedestrian Walkway 1. Repair the small indent on the west side of the walkway to avoid potential tripping hazard. H. Outlet Works 1. Repair the opening between the two trash rack panels. (5 LF) 2. Repair outlet works platform and install railing for added operator safety. I. Exit Channel 1. Approximately 1,900 to 2,000 square feet of rip rap is recommended to be repaired downstream of the downstream apron.
