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<br />RUG 19 '98 02:22PM URBRN DRRINRGE <br /> <br />"J .j <br /> <br />B. S.PS~ DescriDtion of Work Items <br />] . ENGINEER shall meet initially and periodically thereafter as requested by <br />and with the representative of DISTRICT to: <br />a. Insure compliance with the servites required by this Agreement. <br />b. Obtain ~sting data and general information from interested and <br />affected parties. <br />c. Procure current information relative to development plans in the <br />basin. <br />d. Procure information relative: to potential hazards due to flooding. <br />e. Avoid duplication of effort whenever possible by uti1i:ang existing <br />information a...ailable from ()ther agencies. <br />2. ENGINEER shall contact Corps c)fEngineers, United States Geological <br />Survey, State Engineer and Soil Conservation Service personnel and <br />other individuals or agencies who have pertinent knowledge and an <br />interest in the areas under consideration. <br />3. ENGINEER shall utilize the slonn drainage criteria of DISTRICT. taking <br />into consideration regulations ofthe affected local governments, a,nd <br />other lotal, state, or federal agenc:ies where applicable. <br />4. Hydrologic studies shall be performed in sufficient depth and detail to <br />provide hydrographs and to determine the peak rate of runoff and volume <br />of runoff for the basin and each sub.basin in order to develop floodplain <br />maps on a dependable hydrologic basis. This information will define the <br />nood magnitude for the ]0.. 50., 100- and SOO-year recurrente interval <br />runoff.. The hydrologic analysis methodology shall be approved in writing <br />by DISTPJCT and shall be in conformance with CWCB Rules and <br />R.egulations. The effects of dams or other detention facilities on the <br />hydrologic analyses shalt be in cOlttormance with CWCB Rules and <br />Regull\tions and approved in writing by DISTRICT. The hydrolo.~ shall <br />be based on future developed basins as projected from the planning maps <br />of the local governments in the basin. The discharges for the basilt and <br />each sub-basin shall be expressed in the form ofOood bydrographs. <br />Hydrology calculations shall be presented to DlSTRICT for approval <br />upon completion. <br />S. The hydraulic analyses shall be based on the standard step backwater <br />method unless another method is ;approved in writing by DISTRICT. <br />Hydraulic calculations shall be pelformed to define water surface profiles <br />for the 10., 50- and 100- and SOO"year flood frequencies and shall be <br />presented to DISTRICT for appmval upon completion. These <br />calculations shall be complete to the extent of attaining at the least, the <br />capacity and general condition of existing conduits, bridges, resen/oirs, <br />channel levees, CIC., but not including structural integrity. The effects of <br />levees on the hydraulic analyses shall be in conformance with cwes <br />Rules and Regulations and approved in wriling by DISTRICT. All <br />culverts and bridges shall be considered for the potential for debris <br />blockage and shall be analyzed accordingly. <br />6. ENGINEER shall coordinate the work with the Federal Emergcnc,y <br />Management Agency (FEMA). Coordination will include notifying <br />FEMA of the project, indicating that a project objecrivc is to receive <br />FEMA review and approval ofhydrotogy and floodplain delineati()ns, <br /> <br />lllaod1alP".......\911203 2 <br /> <br />P.2/8 <br /> <br />t' <br />