MCSD Wastewater Management Facility Treatment Wetlands Construction

MCSD Wastewater Management Facility Treatment Wetlands Construction

The McKinleyville Community Services District plans to develop a constructed wetland at the existing Wastewater Management Facility (WWMF) in order to reduce non-point source pollution into the lower estuary of the Mad River and to improve overall treatment performance and operations of the WWMF. Currently, MCSD regularly irrigates pasture area at Hiller Park and the Dairy Ranch on Fischer Road for about seven months of the year and utilizes river discharge the remaining five months. The proposed project includes the following elements: -Maintain the existing Ponds 2 and 3 in current condition; -Modify Pond 4 into a wetland pond; and -Construct Wetland Pond 5 outside of the existing treatment system foot print. Ponds 2 and 3 will remain in service during construction and projet implementation and only Pond 4 will need to be dewatered and modified. Pond 4 has an existing rock filter berm and the area east of the berm will be filled to form shallow wetlands, and the area west of the berm left as deep water. In total, approximately 28,000 cubic yards of fill will be required to create the new wetland system, 2,000 cubic yards of which can be taken from the excavation of Wetland 5. In the long term, MCSD could augment the proposed project with additional treatment wetland expansion, and development of ancillary benefits such as education, wildlife habitats, alternative, disinfection, and alternative energy.

Humboldt

California Coastal Commission (CCC), California Department of Fish and Wildlife, Northern and Eureka Region 1 (CDFW), California Department of Parks and Recreation, California Department of Transportation, District 1 (DOT), California Highway Patrol, California Regional Water Quality Control Board, North Coast Region 1 (RWQCB), Department of Water Resources, Office of Historic Preservation, Resources Agency, State Water Resources Control Board, Divison of Financial Assistance, Caltrans, Division of Aeronautics, California Native American Heritage Commission (NAHC)

Caltrans, Division of Aeronautics, California Native American Heritage Commission (NAHC)

Waste Treatment:Other (Wastewater Treatment Wetlands)

Coastal Permit, Grading Permit

Cultural Resources, Hydrology/Water Quality, Noise, Vegetation