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HomeMy WebLinkAboutRES NO 105-99RESOLUTION n°- 10 15 - {} 9 A RESOLUTION OF THE COUNCIL OF THE CITY OF BAKERSFIELD ADOPTING A MAINTENANCE AND OPERATION PLAN FOR THE KERN RIVER SOUTH ;LEVEE. WHEREAS, in exchange for riparian Kern River property, the City of Bakersfield agreed to construct, operate, and maintain an earthen levee on the south bank of the Kern River from the Kern River/Stockdale Highway bridge to a point approximately one mile southwesterly; and WHEREAS, the Federal Emergency Management Agency (FEMA) requires an adopted maintenance and operation plan for the Kern River South Levee from the community Chief Executive Officer (M;ayor); NOW, THEREFORE, BE IT RESOLVED by the Council of the City of Bakersfield as follows: Pursuant to Section 12 of the City Charter, the "South Levee Upgrade for the Kern River Operations and Maintenance Plan" is hereby established and attached hereto and marked "Exhibit .......... o0o ........... I HEREBY CERTIFY that the foregoing Resolution was passed and adopted by the Council of the City of Bakers~eld at a regular meeting thereof held on JUL 2, 1 1999 , by the following vote: AYES: COUNCILMEMBER CARSON, DEMOND, MAGGARD, COUCH, ROWLES, SULLIVAN, SALVAGGIO NOES: COUNCILMEMBER ABSTAIN:COUNCILMEMBER ABSENT:COUNCILMEMBER hi o mJ F_... CITY CLERK AND ZEX OFFICIg/dZthe Council of the City of Bakersfield APPROVED JUL 2 1 1999 By ....... '~GB Pdi~~ Mayor APPROVED AS TO FORM: BART J. THILTGEN City Attorney By ALAN D: DANIEL Assistant City Attorney CITY OF BAKERSFIELD EXHIBIT NO. WATER RESOURCES DEPARTMENT OPERATIONS AND MAINTENANCE PLAN for the KERN RIVER SOUTH LEVEE WEST OF BUENA VISTA ROAD PURPOSE: In exchange for certain riparian properties on the Kern River, the City of Bakersfield entered into an agreement with Tom Carosella Properties and Coleman Homes, Inc. which required the City of Bakersfield to construct an earthen levee on the south bank of the Kern River from the vicinity of the Stockdale Highway/Kern River bridge to a point approximately one mile southwesterly. This levee will permit Coleman Homes, Inc. to build residential and commercial development on the vacant lands to the south. The Federal Emergency Management Agency (FEMA) requires the responsible agency, the City of Bakersfield, to have an officially adopted maintenance and operation plan for the levee. A) OPERATION PLAN: This project is located on a reach of the Kern River extending 5000 feet west of the Stockdale Highway Bridge. The City now has jurisdiction and maintenance obligations over the first westerly 1800 feet measured downstream from the Stockdale Highway Bridge. During most years, the Kern River is dry in this area, since the water is diverted for irrigation, The City has an existing agreement with the State of California Department of Water Resources to maintain the elevation of the bed of the River from the 1800-foot point downstream of the Stockdale Highway Bridge upstream to the Manor Street Bridge. This agreement will be extended to cover the additional channel invert maintenance to a point 5000 feet below the Stockdale Highway Bridge. In addition to the City complement of labor and heavy equipment, a standby heavy equipment contractor is retained on an annual contract with a 24-hour notice clause to assist in this work. The contract with the Contractor will be extended to cover the additional 3200 feet and will be utilized to make any major levee repairs. CLOSURE DEVICES: No closure devices exist or are proposed in the project area. FUTURE INTERNAL DRAINAGE SYSTEMS: The future internal drainage systems will be established in accordance with the regulation of the City of Bakersfield. These gravity facilities, maintained by the City of Bakersfield, will be designed with streets and drainage lines carrying storm waters to excavated sumps to receive the storm waters. The sumps are designed for receiving storms of 100-year frequency. AUTOMATIC FLOOD WARNING SYSTEMS: No automatic flood warning system exists or is proposed. B) JURISDICTION AND RESPONSIBLE PERSONNEL: The maintenance and repair of this levee facility is the responsibility of the City of Bakersfield, Kern County, State of California. The personnel responsible who have the authority to order emergency work are as follows: Patrick E. Hauptman, Water Superintendent, City of Bakersfield (661) 326-3715 Florn Core, Water Resources Department Director, City of Bakersfield (661) 326-3715 Gene Bogart, Water Resources Manager, City of Bakersfield (661) 326-3715 C) INSPECTIONS: The inspector shall keep a written log of the inspection activities and reports. The levee shall be routinely patrolled at least annually, after severe storms, when the channel has been carrying water flow in excess of 500 cubic feet per second, grass fires and for seismic events greater than M~,5. During these examinations, erosion, vegetative cover, the 18-inch ductile iron drinking water pipeline crossing shall be carefully examined for signs of distress. The pipeline is located approximately 30 feet downstream from the Stockdale Highway Bridge. D) MAINTENANCE: LEVEE REPAIR; Rills, sloughing or erosion of the slopes of the levee shall be immediately repaired and be filled with suitable material and thoroughly compacted to 100% of dry density as defined by ASTM D698 (Modified Proctor). After a seismic event of M,~5 or more, any sand boils or other damage shall be immediately repaired since the site may be subject to soil liquefaction. The standby Contractor shall be prepared to furnish equipment and materials for immediate major repairs should heavy damage occur. For the most severe circumstance, high river conditions, severe seismic event, the Contractor shall have available a Caterpillar 235 excavator, a Caterpillar 966 Loader, a self-propelled vibratory roller and a motor grader available within 24 hours. Particular attention shall be to the 18-inch ductile pipe crossing and any damage shall have immediate attention. VEGETATIVE WORK AND REPAIR: A well-established sod cover over the levee will be maintained to prevent erosion rills and sloughing and to withstand design velocities. The vegetative material on the levee shall be carefully preserved, fertilized and re- seeded or re-sodded as needed. Occasional spraying of brush growth with herbicides may be required to maintain the sod cover. The work shall be performed in accordance with CALTRANS STANDARD SPECIFICATIONS JULY 1992 DEPARTMENT OF TRANSPORTATION STATE OF CALIFORNIA, Section 20 and the slopes shall be hydro seeded with the following mixture: GRASSES: Hordeum 15%, Leymus 20%, Elimoides 10%, Vulpia 10%, Poa 5%, Necella p. 20%, Fesuca 20%, each applied at 1.75 Ibs/1000 SF. HYDROSEED APPLICATION The hydro seed slurry shall contain the seed as specified above, mulch and water in the following amounts per acre: Long grain wood fiber mulch 800 Ibs., seed as specified. GRASSES, 108 Ibs., water 300 gals/min. Fertilizer, if needed shall be 16-20-0 or equal. RIPRAP: Should riprap be found necessary to protect portions of levee from erosion, the following treatment will be utilized: from CALTRANS STANDARD SPECIFICATIONS JULY 1992 DEPARTMENT OF TRANSPORTATION STATE OF CALIFORNIA, and may consist of non-concreted concrete debris without rebar or facing class rock. A footing trench will be constructed at the toe of the slope and method B Placement utilized in accordance with Section 72.503. RODENT CONTROL: When burrowing rodent damage is observed rodent control measures will be taken. Excavation and repair will be immediately performed.