Rehabilitation of Storm Drain Outfall at Remington Court Project (UY-17-01)

Summary

SCH Number
2020100445
Lead Agency
Sunnyvale, City of (City of Sunnyvale)
Document Title
Rehabilitation of Storm Drain Outfall at Remington Court Project (UY-17-01)
Document Type
MND - Mitigated Negative Declaration
Received
Project Applicant
City of Sunnyvale - Department of Public Works
Present Land Use
Existing storm drainage facilities/ R2 - Low Medium Designation / RLM - Low Medium Residential

Document Description
Initial Study, Draft Mitigated Negative Declaration, NOI and NOC - The City of Sunnyvale Public Works Department (City) is proposing to repair a failing storm drain outfall pipe that discharges to Stevens Creek at the end of West Remington Drive, in Sunnyvale, California. The City has determined that a 60-inch storm drain outfall that discharges directly into Stevens Creek has deteriorated and a small portion at the end of the pipe has fallen into the outfall channel connected to the creek. Engineering reports concluded that the deterioration of pipe and the lack of proper erosion control measures at the discharge point and further downstream of the low-flow channel were the key reasons for the failure of the storm drain outfall pipe and the deepening of the outfall channel. The City is proposing a project to replace the failed segment of pipeline and alter the drainage outlet to prevent future erosion at the discharge point and to prevent backups from the creek into the municipal storm drainage system.

Contact Information
Richard Chen, PE
City of Sunnyvale, Public Works Department
456 W Olive Ave.
Sunnyvale, CA 94086

Phone : (408) 730-7414
rchen@sunnyvale.ca.gov

Location

Coordinates
37°21'34"N 122°3'43"W
Cities
Sunnyvale
Counties
Santa Clara
Regions
Citywide Countywide
Cross Streets
Remington Ct., Stevens Creek Blvd.
Zip
94087
State Highways
CA-85, I-280
Railways
Caltrain
Airports
Norman Y. Mineta, San Jose Inter
Schools
Sunnyvale Middle School
Waterways
Stevens Creek
Township
7S
Range
W2
Other Location Info
Existing storm drainage facilities/ R2 - Low Medium Designation / RLM - Low Medium Residential
Other Information
The City of Sunnyvale Public Works Department (City) is proposing to repair a failing storm drain outfall pipe that discharges to Stevens Creek at the end of West Remington Drive, in Sunnyvale, California. The City has determined that a 60-inch storm drain outfall that discharges directly into Stevens Creek has deteriorated and a small portion at the end of the pipe has fallen into the outfall channel connected to the creek. Engineering reports concluded that the deterioration of pipe and the lack of proper erosion control measures at the discharge point and further downstream of the low-flow channel were the key reasons for the failure of the storm drain outfall pipe and the deepening of the outfall channel. The City is proposing a project to replace the failed segment of pipeline and alter the drainage outlet to prevent future erosion at the discharge point and to prevent backups from the creek into the municipal storm drainage system.

Notice of Completion

Review Period Start
Review Period End
Development Type
Water Facilities (Storm Drain Outlet Repair)
Local Action
Other Action
Project Issues
Aesthetic/Visual Air Quality Archaeologic-Historic Biological Resources Drainage/Absorption Flood Plain/Flooding Geologic/Seismic Noise Public Services Soil Erosion/Compaction/Grading Vegetation Water Quality Water Supply Wetland/Riparian
Reviewing Agencies
California Air Resources Board California Department of Conservation California Department of Fish and Wildlife, Bay Delta Region 3 California Department of Parks and Recreation California Department of Transportation, District 4 California Department of Transportation, Division of Aeronautics California Department of Water Resources California Highway Patrol California Native American Heritage Commission California Natural Resources Agency California Public Utilities Commission Department of Toxic Substances Control Office of Historic Preservation State Water Resources Control Board, Division of Drinking Water California Regional Water Quality Control Board, San Francisco Bay Region 2

Attachments

Environmental Document
NOI_Sunnyvale Remington Storm Drain Outfall Repair ISMND Project_20201016   PDF 115 K Sunnyvale Remington Court Outfall Repair ISMND_Summary Form   PDF 610 K Sunnyvale_Remington Outfall_Public Review Draft ISMND_Appendices Included_2020 10 19   PDF 29602 K
NOC
NOC_Sunnyvale Remington Storm Drain Outfall Repair ISMND Project_20201015   PDF 827 K OCR NOC_Sunnyvale Remington Storm Drain Outfall Repair ISMND Project_20201015   PDF 717 K
State Comments
2020100445_RWQCB Comment   PDF 657 K

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