Additional environmental compliance tasks at DCID

Description

This sole source work will follow up on the work already underway by this cooperator. The prior environmental compliance work assumed that the results of the environmental studies would not require revisions. It turned out that National Historic Preservation Act (NHPA) compliance surveys were positive not negative. The environmental resource surveys for Section 106 of NHPA identified unanticipated and significant cultural resources at the project site that will require modifications to the fish passage project implementation Plans and Specifications to avoid and/or mitigate potential project-related impacts. Additionally, design modifications to the Plans are necessary to mitigate potential project-related impacts to elderberry shrubs that were identified and mapped on the project site during environmental studies. To complete the environmental regulatory processes, the following tasks must take place: • Survey and develop revised designs to realign portions of the southern access route to the project site to avoid the identified cultural resources. • Complete additional environmental surveys of the new southern access route alignment. • Develop mitigation strategies and a mitigation design for the northern access route. • Develop design revisions to the DCID irrigation canal to mitigate potential risks to the identified elderberry shrubs.

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