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HomeMy WebLinkAboutAgenda Report - October 20, 1993 (69)CITY OF LODI COUNCIL COMMUNICATION AGENDA TITLE: Approval of Engineering Contract/Mokelumne River Bank Project MEETING DATE: October 20, 1993 PREPARED BY: Parks and Recreation Director RECOMMENDED ACTION: Authorize City Manager to execute an engineering contract for the Mokelumne River project. BACKGROUND INFORMATION: Our grant proposal for improvements to the Atokelumne River bank is currently being processed. However, the grant will not be funded until December 1, 1993 at the earliest. It will then be necessary to do the necessary engineering work and gain the necessary permits. Our consultant has contacted Lampe Engineering and Eco Plan Landscape architects. These firms have reviewed the project site and given us a time line for completion of work. In order to complete this project, it will be necessary to begin as soon as the grant is received to do the necessary engineering work. It will be noted that we are past the previous projected time line. This is due to the State of California funding cycle. This work will be funded by the State. All that is needed from Council is authorization to proceed with the work. (Piease see attached). FUNDING: This will be funded from Wildlife Conservation Fund grant monies. We will act on this contract once state funding is received. Ron Williamson Parks and Recreation Director Prepared by Scott Essin, Parks Superintendent INA APPROVES THOMAS A. PETERSON recycled Paper ^Ky Manager .00 CC -1 PROSECT PROPOSAL PIGS LAKE LEVEE REPAIR Background The existing levee protecting Pig's Lake from the Mokelumne River is suffering erosion primarily from wave action as wind induced waits at the high water level and wakes from boaters are undermining levee banks causing loss of vegetation, soil, and eventually, the loss of the le7ce itself along with &- Park Improvements and Natural Area. The most critical section of the existing levee is a short section directly to the east of the Nature Area where easterly winds and a bend in the river channel direct waves to the levee face. This proposal would provide for Ievee restoration and re -vegetation utilizing Bio -technical methods of construction similar to erosion control projects along Bucks Creek, Wolf Creek, Willow Creek, and Greenhorn Creek in Plumas County in the aftermath of the 1986 flooding experienced in this region. Proposal Phase I - Conceptual Desigg Lampe Engineering and ECO/Plan would produce a conceptual plan and project sketches of the design concepts; project feas;bility, and preliminary cost estimates for the levee re -habilitation. This preliminary work would be submitted to the Parks and Recreation District for review and approval. Phase II - EngWeering Lampe Engineering and Eco/Plan would work with regulatory agencies such as the California Department of Fish and Game, Regional Water Quality Control Board, U.S. :Umv Corps of Engineers, and Woodridge I.D. to obtain the necessary permits for the project, and prepare NIEPA documents in the form of a Categorical Exclusion for the project construction. Lampe Engineering and EcoTlan would provide for construction drawings, specifications, and construction control for the levee repair utilizing all natural materials such as logs, stumps, large rock or boulders, and native species re -vegetation. This proposal would be for the short, critical section of levee of immediate concern illustrated above. This methodology and "design standard" could then be utilized by the agency for future repair or restoration as the need arises in the future. F7J This proposal would re -habilitate approximately 100 feet of levee from the Iow water elevation to an elevation sufficient to protect the slope from wave action and stream velocity. The area would be excavated to allow for the material to be "keyed" or anchored into solid embankment. The material would be placed in Iayers or stages and backfilled to replace eroded material and compacted with each successive layer tied to the previous one until the desired elevation is reached. The area would then be seeded, planted, and sirigged with appropriate native plants and trees to complete the structure. This proposal would also provide for a permeable zone which would allow water to pass through the levee and equalize the water elevations between the River and Pig's Lake. This approach to erosion control is a very effective and cost efficient method which will protide the most natural setting possible for levee protection as well as creating wildlife habitat and provide for other recreational opportunities such as naturo or interpretive trails. This concept is unconventional, and has the advantage of lending itself to force account or volunteer construction methods, thin producing a sound and visual pleasing structure at low costs. This project would be completed and delh crcd to the Superintendent, Lodi Department of Parks and Recreation, for a cost not to exceed S 9865 Proposed Time Frames August 1, 1993 Award Phase I of Professional Service Contract. August 13, 1993 Complete Phase I and present to the City of Lodi, Parks and Recreation Department. August 15-20,1993 Rericw of conceptual design by the Parks and Recreation Department. Decision on Go or No Go to Phase 11. August 25, 1993 Award of Phase II of Professional Services Contract. September 15, 1993 Completion of construction drawings, project specifications, and engineers cost estimate. October 1, 1993 Permits obtained, Categorical Exclusion complete, project advertised for t;onstruction, or Force Account construction begins. October 20, 199 Project completed. Cost, breakdown for Professional Servic;s Phase I - Conceptual Design Provide conceptual design with sketches, feasibility, overview, and preliminary cost estimate for the project. Project Engineer 8 hrs (rte S75 S 600 Landscape Architect/Arborist 2 hrs @ S75 S 150 Technician 8 hrs @ S35 S 280 Travel: 1 day @ S300 for design team S 340 S 1330 Phase H - En eerinQ 1. Obtain necessary permits from regulatory agencies for stream alterations, levee construction, borrow sources, and fill operations. Prepare necessary NEPA documents and a Categorical Exclusion for the project. Landscape Architect/Arborist Project Engineer Clerical Travel: 2 person/days @ S 100 2 hrs @ S75 S 150 8 hrs @ S75 S 600 4 hrs @ S25 S 100 S 200 S 1050 2. Provide construction drawings and technical specifications for levee repair along with engineers cost estimate for the project. "Boiler Plate" specifications would be provided by the agency, and incorporated into the construction documents for contract action by the agency. Pro;r.;t Engineer Landscape Architect/Arborist Technician Drafting Clerical Travel: 2 personrdays 'w S100 24 hrs ,@a S75 S 1800 3 hrs @ S75 S 225 16 hrs @ S35 S 560 20 hrs @ 825 S 500 12 hrs @ S25 S 300 200 S 3585 3. Provide for construction consultation and project review during construction. Act as the Agencies "designated representative" during project construction. Project Engineer 24 hrs @ S75 S 1800 Landscape Architect/Arborist 8 hzs @ $75 S 600 Travel: 3 days for Project Engineer @100 S 300 1 stay for Landscape Architect @ S 100 S 100 S 2800 4. Miscellaneous Costs Blueprinting/Reproduction S 100 Permits S 200 NMeage 1240 ?%files @ S.25 S 300 S 600 Total Cost for Services: S 9365