Mills Lane Storm Drain Improvement Project

Summary

SCH Number
2021090355
Lead Agency
City of St. Helena
Document Title
Mills Lane Storm Drain Improvement Project
Document Type
MND - Mitigated Negative Declaration
Received
Present Land Use
Service Commercial (SC), Industrial (I), Agriculture (A-20), Winery (W) / Industrial, Urban Reserve, Agriculture
Document Description
The proposed Project consists of a new storm drain that will convey this runoff, as well as drainage from runoff east of Highway 29, and can service future development in the area, discharging to the Napa River. The proposed Project entails construction of a new storm drain within Mills Lane, which is a City street for most of its length, from its intersection with State Highway 29 east to the Napa River. The proposed storm drain system connects to an existing 30” storm drain pipe at a new drop inlet structure. The new storm drain will consist of 45 feet of 36” pipe, 894 feet of 48” pipe, and 3,867 feet of 60” pipe. All proposed storm drain pipe will either be reinforced concrete pipe (RCP) or HDPE. The total length of the proposed storm drain is approximately 4,900 feet. The storm drain will discharge to the west bank of the Napa river approximately 600 feet east of the terminus of Mills Lane. Some road repaving will be necessary; however, no above-ground structures are proposed.

Contact Information

Name
Aaron Hecock
Agency Name
City of St. Helena
Contact Types
Lead/Public Agency

Location

Cities
St. Helena
Counties
Napa
Cross Streets
Hwy 29 and Mills Lane
Zip
94574
Parcel #
009-070-029, 009-120-060
State Highways
Hwy 29
Railways
Wine Train
Waterways
Napa River

Notice of Completion

Review Period Start
Review Period End
Development Types
Other (New storm drain project.)
Local Actions
Capital Improvement Project
Project Issues
Air Quality, Biological Resources, Cultural Resources, Mandatory Findings of Significance, Tribal Cultural Resources
Reviewing Agencies
California Air Resources Board (ARB), California Department of Conservation (DOC), California Department of Fish and Wildlife, Bay Delta Region 3 (CDFW), California Department of Forestry and Fire Protection (CAL FIRE), California Department of Parks and Recreation, California Department of Water Resources (DWR), California Highway Patrol (CHP), California Native American Heritage Commission (NAHC), California Natural Resources Agency, California Public Utilities Commission (CPUC), California Regional Water Quality Control Board, San Francisco Bay Region 2 (RWQCB), California State Lands Commission (SLC), Office of Historic Preservation, State Water Resources Control Board, Division of Drinking Water, State Water Resources Control Board, Division of Water Quality, California Department of Transportation, District 4 (DOT)
Reviewing Agency Comments
California Department of Transportation, District 4 (DOT)

Attachments

Notice of Completion [NOC] Transmittal form
State Comment Letters [Comments from state reviewing agencies]

Disclaimer: The Governor’s Office of Planning and Research (OPR) accepts no responsibility for the content or accessibility of these documents. To obtain an attachment in a different format, please contact the lead agency at the contact information listed above. You may also contact the OPR via email at state.clearinghouse@opr.ca.gov or via phone at (916) 445-0613. For more information, please visit OPR’s Accessibility Site.

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