Brightwood Lake Dam Removal and Kellogg Creek Restoration

Lake County Stormwater Management Department (Owner) plans to hire a design-build firm/team to remove the Brightwood Lake dam and restore approximately 1,800 feet of Kellogg Creek within the existing impoundment using floodplain excavation and natural channel design stream restoration techniques (Project). Approximately 8.85 acres of riparian corridor will be revegetated with native plants; tree plantings will be emphasized along the restored stream. Storm sewers currently diverted to Brightwood Lake will be extended to the restored riparian buffer and converted to sheet flow with adequate vegetative cover to prevent erosion. After completion of restoration, non-residential parcels will be consolidated and placed under Township ownership. Environmental covenants have been secured for all properties or portions of properties on which restoration occurs, including privately owned parcels. Additionally, Concord Township has a riparian setback resolution that will prohibit construction of structures within 75 feet of either side of Kellogg Creek, which will help protect areas upstream and downstream of the restoration project. This project is included as a short-term priority project within Critical Area 2 of the Non-Point Source Implementation Strategy (NPSIS) plan for the Big Creek 12-digit HUC watershed. The project completely addresses Objective 1 in Critical Area 2. Dam removal and subsequent stream restoration is expected to improve the macroinvertebrate community to an ICI score of 34 at RM 3.3 and the fish community to an IBI score of 40 at RM 5.7 to meet full attainment of WWH at both locations. The QHEI score for Kellogg Creek in the restoration reach is anticipated to be raised from 48.5 (“fair”) to 58 (“good”) immediately after project implementation and to 65 - 70 (“good” or “excellent”) as a long-term (20 year) goal. IBI and ICI scores in the restoration reach are also anticipated to be raised to meet WWH biocriteria. Load reductions of 136 pounds/year of nitrogen, 136 pounds per year of phosphorus, and 272 tons per year of sediment are anticipated as a result of this project. This project will result in re-establishment of a natural stream channel for Kellogg Creek, improved functional capacity of the riparian corridor, improved water quality to downstream reaches of Kellogg Creek, increased macroinvertebrate and fish habitat and restored salmonid habitat, and greater potential for upper and lower reaches of Kellogg Creek to meet full attainment of WWH.

Division 02 -	Existing Conditions, Subsurface Investigation.
Division 31 -	Earthwork, Site Clearing, Grading, Excavation and Fill, Subgrade Preparation, Excavation, Shoring, Tunneling and Mining, Tunnel Excavation.
Division 35 -	Waterway and Marine Construction, Dam Construction and Equipment.