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BACKGROUND An existing 36 -inch corrugated metal pipe storm drain line near Yolanda Court failed during the winter 2017 storm events, causing the loss of 50 feet of the pipeline between two manholes, de -stabilization of the upstream manhole, and major erosion of the steep bank. The storm drain line is located within the EBRPD Shadow Cliffs Recreation Area immediately adjacent to Old Vineyard Avenue and Yolanda Court, along the banks of Boris Lake (see Attachment 1). The pipeline carries storm drain water for all of Foxborough Estates, and several developments within the Vineyard Avenue Corridor. The failure occurred near the top of the bank of Boris Lake. This area is within habitat suitable to protected species; therefore an environmental assessment and coordination with the regulatory agencies was necessary during design. Engineering worked with the City's on-call consultants: Pakpour Consulting, Inc., as the lead design firm; Kier & Wright, who performed land surveying; and BSK Associates for geotechnical recommendations, to design the project. The design included a full environmental assessment and review with the Regional Water Quality Control Board, Zone 7, EBRPD, and the California Department of Fish and Wildlife (CDFW) to obtain the necessary approvals and permits. The project plans were completed in early August. After receiving final confirmation from CDFW and the Regional Water Quality Control Board that no permits were necessary from their agencies, the project was immediately advertised. Through the Meadowlark Sewer Siphon contract with Manito Construction, Inc., a change order for $44,194.69 was issued to procure the required Fusible PVC pipe for the repair. Due to the four to six week lead time associated with the pipe and fusing equipment, the City procured the pipe under a contract change order to ensure the pipe would be onsite to be installed before the fall rains. DISCUSSION Sealed bids for the project were opened on September 1, 2017. The City received eight bids, ranging from the low bid amount of $194,300 from ELLA, to $332,700. The low bid amount is approximately three percent lower than the engineer's estimate of $200,000 (see Attachment 2). Past work performed by ELLA was verified to be satisfactory. Staff recommends award of the construction contract to the lowest responsible bidder, ELLA for $194,300. Budget The total anticipated design expenditure authorized during the design phase of the project is $77,201. The total anticipated construction expenditure is $262,845 for a total project expenditure of $340,046. The construction expenditures include: $194,300 for ELLA, $19,000 for construction contingency, $44,194.69 for pipe, $5,000 dollars for geotechnical services and $350 for advertising. A construction contingency of $19,000 (10%) is standard to address unforeseen conditions typically associated with working within hillsides. The estimated total expenditure for this project (including design, construction and construction support) is $340,046 as detailed in Attachment 3. Staff recommends transferring $90,046 from the Bi -Annual Storm Repairs and Improvements project, CIP No. 17415, to fund the total estimated expenditure. Page 2 of 3