Markleeville Sewer Pump Station Relocation and Improvements Project

Markleeville Sewer Pump Station Relocation and Improvements Project

Addendum to the Markleeville Creek Floodplain Restoration Project Initial Study/Mitigated Negative Declaration (2015). Since 2015, the Markleeville Creek Floodplain Restoration Project has been split into two separate and distinct projects, with separate funding sources: - Markleeville Sewer Pump Station Relocation and Improvements Project, led by MPUD, to be funded by Clean Water State Revolving Fund (SRF) financing; and - Markleeville Creek Floodplain Restoration Project, which includes the floodplain restoration and the public access facilities, led by AWG. The Markleeville Sewer Pump Station Relocation and Improvements Project is the focus of this addendum. The sewer system improvements need to be completed first to allow for the subsequent floodplain restoration and public access improvements. MPUD is responsible for the sewer system modifications, which consistent with the 2015 Project evaluated in the 2015 IS/MND, includes the demolition and removal or abandonment of on-site sewer facilities in the floodplain and construction of replacement facilities including an access road, sewer manholes, sewer piping, and a pump station that is accessible to maintenance vehicles at all times regardless of weather conditions. The current project site plan for the sewer system improvements has simply been refined based on detailed engineering of the sewer facilities and avoidance of potential environmental impacts. The Sewer Improvement Project has independent utility, extending the lifespan of MPUD facilities, improving reliability and accessibility, and protecting water quality by moving sewer facilities out of the floodplain. The purpose of this addendum is to describe MPUD’s current design for the Markleeville Sewer Pump Station Relocation and Improvements Project, which has been revised to avoid trenching across Markleeville Creek and to avoid work near the Markleeville Courthouse, and to update the CEQA document, which is over five years old, to address current CEQA Guidelines. The evaluation in this addendum addresses whether changes to the project, changes to the project site or vicinity, or new information are so substantial that they would require major revisions to the previous CEQA document. As documented in this addendum, no subsequent CEQA document is necessary for the project.

Markleeville

Alpine

Countywide

California Air Resources Board (ARB), California Department of Fish and Wildlife, North Central Region 2 (CDFW), California Department of Parks and Recreation, California Department of Transportation, District 10 (DOT), California Department of Water Resources (DWR), California Governor's Office of Emergency Services (OES), California Highway Patrol (CHP), California Native American Heritage Commission (NAHC), California Natural Resources Agency, California Regional Water Quality Control Board, Lahontan South Lake Tahoe Region 6 (RWQCB)

Waste Treatment:Sewer (pump station relocation - no change in treatment/capacity)(MGD 1E-06)

Site Plan

Aesthetics, Agriculture and Forestry Resources, Air Quality, Biological Resources, Cultural Resources, Energy, Flood Plain/Flooding, Geology/Soils, Greenhouse Gas Emissions, Hazards & Hazardous Materials, Hydrology/Water Quality, Land Use/Planning, Mineral Resources, Noise, Population/Housing, Public Services, Recreation, Solid Waste, Transportation, Tribal Cultural Resources, Utilities/Service Systems, Vegetation, Wetland/Riparian, Wildfire