Sump 119 Outfall Demolition

Sump 119 Outfall Demolition

The Sacramento Regional County Sanitation District (SRCSD) proposes the removal of six abandoned bents and two groups of dolphin piers from the Sacramento River, Installed in 1946, the bents once supported a 30-inch-diameter sewer force main within the river, which has since been demolished. The pilings for each bent and dolphin piers were embedded into the river bed a minimum of 20 feet until a minimum bearing of 10 tons was established. The demolition of the existing structures will attempt to remove each piling intact. If the entire length of the piling cannot be extracted, the piling will be cut below the existing river bed and abandoned in place. If necessary project demolition will include excavation to expose the concrete blocks. Once the concrete is removed the remaining piles and dolphin piers will be extracted using a clamp and vibratory extractor. Engineered backfill will be required for excavation on the river bank. The Bents that remain will be removed with a barge mounted crane, clamp, and vibratory extractor. No backfill is aniticpated for these bents.

Sacramento

Sacramento