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HomeMy WebLinkAboutCC AG PKT 2004-02-23 #L AGENDA REPORT DATE: February 23, 2004 TO: Honorable Mayor and City Council THRU: John B. Bahorski, City Manager FROM: Douglas A. Dancs, P.E., Director of Public Works /City Engineer SUBJECT: SAND RETENTION GROIN REHABILITATION PROJECT No. 50147 DESIGN UPDATE — RECEIVE AND FILE SUMMARY OF REQUEST: The proposed action will receive and file the design update for the Sand Retention Groin Rehabilitation Project No. 50147. BACKGROUND: On February 10, 2003, the City of Seal Beach accepted a grant from the California Department of Boating and Waterways (DBAW) in the amount of $800,000 and approved a matching budget amendment of $267,000 from the General Fund Reserve for the repair and rehabilitation of the sand retention groin. The concrete sheetpile groin built in 1959 retains the shifting sand which results in a wider beach that provides increased protection to coastal structures from wave and flood damage. DBAW is the designated agency for coordinating the State's beach erosion control program activities. Observations were first noted in 1983/1984 and the City contracted with Moffatt & Nichol Engineers (M &NE) to prepare an inspection report. The report was presented to the City Council in 1985; however no funding was available to make the. repairs. The estimated cost of those repairs was estimated at less than $200,000. In the spring of 1994, the City commissioned an updated inspection report and confirmed that the conditions had progressed with a new cost estimate of $400,000. However, funding was not available to make the repairs. A cursory inspection occurred once again in 1998 by M &NE when high waves and tides on January 30 damaged more of the cap than had previously been damaged. During this course of time, (1985 — 1999) Staff had continuously requested local funding, applied for grant funding and made requests for state and federal funding. A program became available from the California Department of Boating and Waterways (DBAW) which is the designated agency for coordinating the State's beach erosion control program activities. The State's Beach Erosion Control Program provides for competitive grant funding opportunities for eligible projects. The available funding levels are set at 75% from the State Department of Boating and Waterways with 25% matching from the local or regional agency. Agenda Item Z. In June of 2000, Staff submitted an application to DBAW for the repair and DBAW requested a feasibility study and a resolution from the City Council to approve the application. On September 11, 2000, City Council approved a resolution supporting the Groin Repair Project and authorized the Public Works Department to submit a grant application with a 25% match for the repair to DBAW. M &NE completed a feasibility study and submitted the application. The study found that repairing the groin was at a benefit to cost ratio of 5 to 1. The project was not selected at that time and subsequent applications were sent to DBAW. The feasibility study was also updated in August of 2001. In January of 2003, the City was formally notified as being the recipient of a grant in the amount of up to $800,000 requiring a 25% City match for the total project cost. The required City match which is currently unfunded is $267,000. The concrete sheet pile is now experiencing severe deterioration and is in need of significant structural repairs in order to continue retaining beach sand. Currently, sand is infiltrating through various damaged sections and reducing the effectiveness of the groin. Without extensive repairs, the total failure of this facility will be imminent, the rate of beach sand erosion will accelerate and loss of public infrastructure and recreational benefits will be at risk. In March of 2001, a portion had failed requiring a temporary emergency repair authorized by Council. The temporary repair, designed to last 5 to 10 years was completed in July 2001 at a cost of $127,000. Although the temporary cap has come off, the cap was not designed as an integral part of the structural integrity. The current steel sheet pile still functions as it is was originally intended. The proposed project to be funded under the Beach Erosion Control Program will extensively rehabilitate the groin including the replacement of broken portions of the pile cap which stabilizes the concrete sheetpile; repair holes and spalled concrete within the sheetpiles; and seal cracks and joints. The life expectancy of this rehabilitation is 30 years. Proposals were requested from consultants for the design of the proposed repairs. Moffatt and Nichol Engineers, the consultant who prepared the original inspection reports dating from 1984, 1994, and 2000 and 2001, emerged as the top candidate with highest ranked qualifications, related experience in these types of projects, and an appropriate schedule. Moffatt and Nichol Engineers come highly recommended from various other public agencies, and are currently performing work for agencies in Orange County. Staff will use the existing on -call coastal engineering City contract with Moffatt and Nichol Engineers for the preliminary design report and design of this facility. Staff will negotiate a task order proposal with Moffatt and Nichol Engineers and their firm can perform the work immediately within the budget set forth in the approved Capital Improvement Program and the Engineering Division's internal budget. Award of a construction contract is expected in 2005. FISCAL IMPACT: Funds are available within the Project No. 50147 of the approved Capital Improvement Program. The estimated total cost of the project including design, environmental, permitting, construction and inspection $1,067,000 which is funded by $800,000 from DBAW and $267,000 from the undesignated general fund reserve. No additional work will be performed unless adequate funding is available in the project budget. Any funds remaining at the end of this phase of the project will be returned to DBAW and the City's General Fund. Agenda Item RECOMMENDATION: It is recommended that the City Council receive and file the design update for the Sand Retention Groin Rehabilitation Project No. 50147. Prepared By: Concur: Mark K. Vukojevic, P.E. Douglas . Da cs, P.E. Deputy City Engineer Director Public Works /City Engineer NOTED • ► APPROV.ri John :.: ahorski City nager Agenda Item