East Meadow Drive & East Meadow Circle Capacity Upgrades

• Project typeStorm Drain Master Plan

Project Description

This project implements two Storm Drain Master Plan Capital Improvement Program (CIP) projects, the East Meadow Drive System Upgrades (SD-22000) and East Meadow Circle Connection to Adobe Creek Pump Station Project (SD-26000). These are both high-priority improvements identified in the Storm Drain Master Plan.  

SD-22000 is located on East Meadow Drive where the existing 36-inch pipe is undersized and lacks the capacity to convey the runoff from a 10-year storm to the Adobe Pump Station. This project will upsize the existing pipe to a 48-inch pipe. 

SD-26000 is located on East Meadow Circle and will redirect flows from Barron Creek to Adobe Creek. East Meadow Circle tends to flood during storm events. The runoff within the pipe drains by gravity through a flap-gate onto Barron Creek. Flooding occurs when flows within Barron Creek exceed the height of the gate and the pressure created by the water in the creek prevents the gate from opening. This project creates a bypass to allow flows from Barron Creek to overflow to the Adobe Creek pump station. The bypass will add a new storm drain line connecting the existing manhole on East Meadow Circle to the existing manhole on East Meadow Drive. The bypass will divert storm drain runoff to Adobe Creek Pump Station where it can be pumped into Adobe Creek and ultimately the Palo Alto flood basin. SD-26000 also proposes to incorporate Green Stormwater Infrastructure (GSI) features in the planter strip area to improve runoff quality and encourage infiltration of the small storm events. 

Both SD-22000 and SD-26000 include several utility relocations due to conflicts with existing utilities as a result of upsizing the diameter of the storm drain pipe and addition of storm drain pipe. In addition, this project includes possible utility offsets of existing 6-inch water, 8-inch water lines, water service and 4-inch fiber optics lines due to conflicts with the proposed gravity storm drain lines. There is one storm drain main connection from private development projects at intersection of East Meadow Drive and Paloma Street, those will need to be reconnected to the proposed 48-inch line. 

Additional storm drain work is associated with Storm Drainage System Replacement and Rehabilitation Project (SD-06101). This will address storm drain pipe failures that occurred during the winter 2023 storm events. 

Scope of Work

• 407 linear feet of 36-inch pipe to be upsized to 48-inch pipe (SD-22000)
• 755 linear feet of 15-inch pipe to be installed (SD-26000)
• 2 storm drain lines reconnections from Paloma (SD-22000)
• 4 utility offsets (Water and Fiber Optics SD-22000 and SD-26000)
• 28 linear feet of 12-inch pipe to be installed (SD-26000)
• 7 storm drain structures to be either removed and replaced or added
• 2 catch basins to be removed and replaced
• Install of GSI features (SD-22001)

Project Status

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