Amendment to First Street Storm Drain Pump Station Improvement by City of Coronado at First Street Coronado

Amendment to First Street Storm Drain Pump Station Improvement by City of Coronado at First Street Coronado

The proposed project, also known as the First Street Storm Water Pump Station Flood Relief Project, would involve constructing a pump system to modify the existing storm drain infrastructure along Marina Way to alleviate flooding conditions at the Ferry Landing in the City of Coronado, California. Work to Specifically complete the proposed project would involve the following: DEMOLITION • Removal of existing attendant booth. • Removal of three existing trees. • Removal of portion of existing street improvements such as asphalt concrete pavement, curb, sidewalk and landscape, as required. • Partial removal of existing rip rap, as required. NEW CONSTRUCTION • Excavate and trench for new well, vault, and drain piping. • Install new 6-inch diameter storm drain wet well in the center of Marina Way near the First Street intersection. • Install 11 linear feet of new 30-inch C900 PVC pipe to connect the existing storm drain structure (at the east side of Marina Way) and the new well. • Install new storm water valve vault in the center of Marina Way, a few feet north of the well. • Install new 10-inch C900 PVC (DR 41) storm drainpipe in trench from the wet well approximately in the middle of Marina Way and predominately alongside the existing 36-inch RCP gravity storm drain all the way to the existing rip rap at the bay, approximately 370 linear feet in length. • Install a 10-inch force main discharge at the rip rap. Replace portion of existing rip rap as required for this installation. • Install a new 42-inch red valve checkmate check valve at the existing gravity storm drain outfall. • Install electrical components including a new SDG&E meter pedestal with grounding and a new packaged pump control panel. • Back fill all excavations, patch up, and resurface to restore all street improvements to pre-construction conditions and landscape in accordance with District landscape guidelines. The proposed project would also include granting a 50-year storm drain easement to the City of Coronado for the ownership, construction, operation, maintenance, repair, replacement and inspection of the proposed storm drain. The easement would include the existing and proposed improvements and would become effective after passage of the 10-day Coastal Act appeal period following Board approval. Construction is anticipated to commence after approval and will take approximately 6-8 months to complete. Additionally, a Right of Entry permit (ROE) between the City and Ferry Landing Associates is required for construction access, including ingress and egress. The Applicant would be responsible for complying with all applicable federal, state, and local laws regarding construction demolition debris, hazards and hazardous materials, and stormwater.

Coronado

San Diego

Southern California

San Diego