Storm Drain CIP Projects: Capacity Upgrades along East Meadow Drive and Connection to Adobe Creek Pump Station from East Meadow Circle (SD-22000 & SD-26000)

Description

General work description:  This project is comprised of two Storm Drain Master Plan CIP projects, the East Meadow Drive East of East Meadow Circle to Adobe Creek Pump Station Project (East Meadow Drive) and East Meadow Circle North of East Meadow Drive Project (East Meadow Circle). The Storm Drain Master Plan identifies both projects as a high-priority improvement to the City’s storm drain system. The first project location is on East Meadow Drive where the existing 36-inch pipe on East Meadow Drive is currently undersized and lacks the capacity to convey a 10-year storm runoff to the Adobe Pump Station. This project proposes to upsize the pipe to a 48-inch pipe to achieve a 10-year level of service. The second project on East Meadow Circle requires changes to the existing storm drain system by creating a bypass to allow flows from Barron Creek to overflow to the Adobe Creek pump station. The existing storm drain pipe lacks the capacity to convey a 10-year storm runoff. The proposed bypass proposes to add a new storm drain line to connect to the existing manhole on East Meadow Circle and the existing manhole on East Meadow Drive. This bypass will divert partial storm drain runoff to Adobe Creek during a storm event when water level on Barrow Creek is higher than that flap gate and flows within the pipes are not able discharge into Barron Creek.Additional storm drain work for the Storm Drainage System Replacement and Rehabilitation Project (SD-06101) is proposed to address locations where a storm drain pipe failed during recent storm events as a bid alternate. Over the past several years, Public Works Operations Maintenance group have compiled an ongoing list of storm drain pipes and structures that are in need of repair and/or replacement. Over time, the pipes have cracked due to age, tree roots, constructi