On Dec. 27, Whitewater Green Hydro LLC filed at the Federal Energy Regulatory Commission a study plan on its 9-MW hydro project in Oregon.
On July 8, Whitewater Green Hydro had filed with the commission a revised Notice of Intent (NOI) to submit a license application and an associated Preliminary Application Document (PAD) for the Whitewater Creek Hydroelectric Project.
The proposed project would include: a 36.6-foot wide, 113.4-foot-long diversion structure on Russell Creek that would impound a 2,838 square foot reservoir at a normal maximum water surface elevation of 3,580 means sea level (msl); a 19,500-foot-long, 36 to 48 inch-in-diameter high-density polyethylene and steel penstock; an 80-foot-wide by 50-foot-long powerhouse containing one 9-MW Pelton turbine/generator unit; a 320-foot-long tailrace that would discharge flows into Whitewater Creek; and a 2.5-mile-long, 12.4-kV buried transmission line extending from the powerhouse to an existing transmission line along Oregon Highway 22. The project would have an estimated average annual generation of 50,567,654 kWH.
The proposed diversion would create a small reservoir at river mile 1.5 on Russell Creek. The applicant proposes to divert between 5.75 and 138 cubic feet per second (cfs) via the penstock to its proposed powerhouse on Whitewater Creek. These flows would enter the powerhouse and flow through the Pelton turbine/generator unit before discharging to Whitewater Creek, about 2.2 river miles upstream of its confluence with Russell Creek.
On Aug. 30, FERC issued Scoping Document 1 (SD1) for the Whitewater Creek Hydroelectric Project with a preliminary scope of potential environmental issues associated with the project. FERC held two scoping meetings on Sept. 18-19 in Detroit, Oregon, to solicit additional information and study requests necessary to prepare an Environmental Assessment for the project.
Whitewater Green Hydro’s Proposed Study Plan (PSP) includes studies necessary to fill data gaps in the PAD as well as information necessary for preparing a comprehensive Preliminary Licensing Proposal (PLP). The applicant said it intends to complete all nine needed studies in one year and file the individual study results in a comprehensive Initial Study Report (ISR) in June 2015.