A crew from Linkel Environmental Construction of Topsham removes concrete and bedrock Thursday from the Sabattus River in Lisbon to create a deeper channel for fish to spawn. The Joliet Mill mill buildings spanning the river have been removed, and the Maine Department of Environmental Protection removed mercury from contaminated sediments from the river and adjacent properties. One of several dams has been removed to help with spawning. The project, which is next to Mill Street, is scheduled to be completed this month. Russ Dillingham/Sun Journal

A crew from Linkel Environmental Construction of Topsham removes concrete and bedrock Thursday from the Sabattus River in Lisbon to create a deeper channel for fish to spawn. The Joliet Mill mill buildings spanning the river have been removed, and the Maine Department of Environmental Protection removed mercury from contaminated sediments from the river and adjacent properties. One of several dams has been removed to help with spawning. The project, which is next to Mill Street, is scheduled to be completed this month. Russ Dillingham/Sun Journal

A crew from Linkel Environmental Construction of Topsham removes concrete and bedrock Thursday from the Sabattus River in Lisbon to create a deeper channel for fish to spawn. The Joliet Mill mill buildings spanning the river have been removed, and the Maine Department of Environmental Protection removed mercury from contaminated sediments from the river and adjacent properties. One of several dams has been removed to help with spawning. The project, which is next to Mill Street, is scheduled to be completed this month. Russ Dillingham/Sun Journal

A crew from Linkel Environmental Construction of Topsham removes concrete and bedrock Thursday from the Sabattus River in Lisbon to create a deeper channel for fish to spawn. The Joliet Mill mill buildings spanning the river have been removed, and the Maine Department of Environmental Protection removed mercury from contaminated sediments from the river and adjacent properties. One of several dams has been removed to help with spawning. The project, which is next to Mill Street, is scheduled to be completed this month. Russ Dillingham/Sun Journal