Project Highlight – Lake Williams Dam

Hillis-Carnes Provided Services for the $40 million Lake Williams Dam Rehabilitation Project

Hillis-Carnes was contracted by Kinsley Construction to provide roller compacted concrete mix design review, sampling, and testing during the Trial Mix Design Development phase of the Lake Williams Dam project, located in York, Pennsylvania. This project was in the middle of a multi-phased, multi-year plan to repair its existing dam face, spillway, bridge, and utilities. The scope of work included replacing the existing gated (moveable-crest) concrete spillway with a new labyrinth spillway structure and armoring the dam embankment with roller-compacted concrete to provide an auxiliary spillway that would only be activated during extreme flood events. Over 60 million gallons of additional storage capacity were added to the reservoir, and an additional 3 acres of open-water habitat was generated. The dam’s rehabilitation was designed to ensure a secure and reliable water supply.

A skilled and experienced crew, working under the supervision of Project Manager, John J. Hanak, and Assistant Project Manager, Nicholas White of our Harrisburg, Pennsylvania office, were deployed to perform the testing and sampling for this project.   Hillis-Carnes reported to Kinsley’s PenRoc Quarry Materials Lab periodically to provide oversight, testing, and sampling for the Roller Compacted Concrete Mix Designs. Hillis-Carnes also provided RCC compaction testing and field quality control for soil compaction and concrete sample/testing.

On Monday, June 3, 2024, the Lake Williams Dam was officially rededicated to ‘The York Water Company’ employees during a ‘wetting down’ ceremony, which served as a ribbon cutting. Check out the article posted on the ‘York Daily Record’ for more information.