What is the problem?

In 2017, the civil engineering firm Bander Smith inspected the dam at Lake Page and made recommendations to maintain its structural integrity. With existing funds donated to the Lake Page account, we completed the first 3 recommendations below. But now it’s time to tackle number 4.

1. Regrout joints in outflow concrete pipe. $8,000  completed 2020

2. Repair hole in primary riser. $2,000  completed 2020

3. Replace the riser trash rack cover. $2,000  completed 2022

4. Replace metal outflow pipe and backfill eroded areas at the outflow pool. 

Given the number of large storm events that have occurred and will continue to occur, the corroded outflow pipe (circa 1960) is at risk of collapsing. If we do not replace it and stabilize the eroded embankment, this area will continue to degrade and could lead to even larger problems, like a dry lake, which would be an exorbitant expense to repair.

What is the solution?

Exact Stormwater Management specializes in lake and pond repair, completing 6-9 projects a year in neighborhoods and private properties throughout Virginia. Below is their two-phase plan to repair the lake’s outflow pipe.

Scope of Work: Lake Page Stormwater Project (5-7 days)
Cost: $39,170.00 (fixed fee)

Phase I

1. Build an access trail to transport machinery to the work area.

2. Lower lake level approx. 1 ft. to get the work area dry.

3. Sawcut existing pipe to get a clean end to tie into.

4. Regrade washout area underneath outlet pipe.

5. Haul in and place compactable fill dirt into the washout area.

6. Compact fill dirt to match surrounding grade.

Phase II

1. Dig anchor trench for Concrete Canvas (concrete-filled geosynthetic) to stabilize the area and prevent erosion.

2. Install Concrete Canvas, which has a lifespan of 120 years+.

3. Hydrate Concrete Canvas once installation is complete.

4. Install a new section of pipe and connect to the existing pipe stub end.

5. Clean work area of all materials and debris.