City of Morgan Hill Sewer System Master Plan 2017

x Lift Station I. This lift station services the area that is north of the intersection of Tarragon Avenue and Saffron Drive, yet bounded below U.S. State Highway 101. The lift station is located at 19160 Saffron Drive. The lift station includes a duty pump that is rated at 500 gpm. The pump discharges into a 6-inch force main that heads southeast along Monterey Road. x Lift Station W. This lift station services the area that is along south of La Crosse Drive, south of La Jolla Drive, north of Watsonville Drive, and north of Calle Enrique. The lift station is located at 15505 Watsonville Drive. The lift station includes a duty pump that is rated at 500 gpm. The pump discharges into a 6-inch force main that heads into Watsonville Drive. 4.5 FLOW DIVERSIONS The City’s sewer collection system contains diversion structures that are intended to provide opportunities to route flow away from sewer trunks with capacity limitations to sewer pipelines that may have excess capacity. The City has two identified flow diversions that are included in the hydraulic model: x East Dunne Avenue Diversion . The East Dunne Avenue diversion is located at the intersection of Hill Road and East Dunne Avenue. Flows from the foothills in the east near Anderson Lake flow west to the intersection of East Dunne Avenue and Hill Road, where City staff have the option to continue flows west down East Dunne Avenue, or to the south on Hill Road. x West Main Avenue Diversion. The West Main Avenue diversion is located at the intersection of West Main Avenue and Monterey Road. Flow in the Hale-Monterey Trunk may be diverted at that intersection to the east to the Railroad-Monterey Trunk or continue south down Monterey Road. 4.6 SOUTH COUNTY REGIONAL WASTEWATER AUTHORTY WASTEWATER TREATMENT PLANT The South County Regional Wastewater Authority WWTP is an 8.5 million gallons per day (mgd) primary, secondary and tertiary treatment facility. The treatment facility is located at the end of Southside Drive. The original plant was completed in 1990 with a plant expansion occurring in 2007 to provide the plants current capacity and technology. The SCRWA WWTP has a design capacity of 9 mgd, but is limited to 8 mgd due to the chlorine contact basin capacity and it can accommodate a design peak dry weather flow of up to 15.1mgd. The plant is currently operating at an average flow of 6 mgd with low of approximately 3 mgd and a peak of approximately 9 mgd.

August 2017

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City of Morgan Hill Sewer System Master Plan