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4, Provide preliminary cost estimates for recommended improvements and prepare a Capital Improvements Plan (eIP) which will allow for prioritization ofconstructioncomponent~,schedulingandfundingofdesign,landacquisition and tonstruction nfall major and minor improvements, 9, " Dcvdopmentofthemm;tviabledrainageplansforconsiderationbythe city. Development of preliminary cost estimates Improvements Plan matching available improvements. and preparation of a Capital funding to recommended 5. Compile storm drainage design crilcria for standardization of design Ilfall fUluredrainageimprOvements. This report has been prepared to serve as a master plan for coordination of drainage facility design and construction within the study area. This master plan will provide preliminary facility recommendations which are generally in accordance with standard drainage criteria and set forth basic criteria against which final designs may be evaluated. Projects have been identified which will replace or modify existing structures within the basin which are hydraulically inadequate. The intent of this report is llitl to provide precise design of storm sewers, drainage channels and other improvements. The plan will provide criteria and planning information to allow final design and construction to proceed efficiently. 6. Identify appropriate city poHcies and procedures related to the provi siollof adequate drainage facilities in the city. To achieve those objectives, the following generalized steps were employed: 2, 3, 4. 5, 6, " ., I. Coordination meetings with City of Cripple Creek officials and staff. Collection of field data induding preparation of a drainage structure inventory. Based on the preliminary design work conducted as pan of this master plan,eonst ruction costS have been derived such that a Capitallmprovemellls Plan coulll be prepared and implemented as required to fund majnr and minor drainage improvements. Recommendations for specific drainage improvements and their associated cost cstimatcs have hccn prepared for developed areas within the city's corporate lim it. It is the city's position that design and construction of drainage improvements within presently undeveloped areas shall be completed by and at cost to the developer of property to he developed. Review of existing reports and drainage plans which affect Storm water runoff. Review and compilation of soil characteristics which affect storm water runoff. Preparatiun of storm drainage design criteria. Definition of drainage basins and subbasins with hydrologic calculations to determine peak runoff created by the 24-hour, lD-yearand lOO-yearfrequeney StormS under fully developed conditions, TIlt' facililies proposed in this masler plan have been preliminarily sized for the !lows ueterminedby the hydrologic calculations contained in this report a ndhavebcenbasedoH fullydevclnpedconuitioos. It should be noted that proposed uevelopmem within thecity's corpormc limit~ C:in only he hypothesized based on the city's existing lOning ordinances. Variuti(Jn~ frum a~.'urncd develupment paltern~ in au arcu could consiuerahly affect storm drain<lge f10ws and therefore, the ~ize and type of drainage improvement' required. Card\ll Analysis of hydraulic capabilities of existing faciJities. 11-3 11-4