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<br /> <br /> <br /> <br /> Storm Drain Master Plan <br /> <br /> <br /> recommended facilities. The lengths and elevation data will be used for detailed hydraulic analysis and cost <br /> estimating purposes. Recommended drainage improvements to remove hydraulic deficiencies of the municipal <br /> storm drain systems will be analyzed in CivilStorm, developed in the previous tasks to verify operation. The precise <br /> sizing of the modifications to the existing storm drain sizes will be adjusted using the water surface profile model <br /> to optimize the performance of the system. <br /> Deliverables: <br /> 1. Proposed Improvements Maps (1"=1000' scale) <br /> Task 3.5 Preliminary Drainage Facilities Quantity and Construction Cost Estimate <br /> Preliminary construction quantity estimates will be performed for the identified feasible drainage alternatives. A <br /> preliminary estimated cost of construction will be generated from the quantity estimate using approved unit costs <br /> from the City. Unit costs will be based upon the most current cost information for recent similar projects in the <br /> area compiled by RBF and approved by the City. The total project costs for each alternative will then be estimated <br /> which include line items for project design, survey, geotechnical, administration and construction support. In <br /> addition, intangible costs for alternative systems will be investigated, such as environmental mitigation, if these <br /> are determined to be critical for a particular system. Major physical constraints will be included in the estimate <br /> such as (1) land acquisition, (2) street paving and traffic control, and (3) utility relocation or protection. <br /> Deliverables: <br /> Quantity and Cost Estimate Tables <br /> <br /> TASK 4 - MAPPING <br /> Task 4.1 Update Drainage Facility Database <br /> RBF will deliver updated ESRI map files (.mxd) for the ESRI ARCGIS Geodatabase of the existing drainage facilities <br /> within the project limits based upon previous GIS database, utility inventories, as-built drawings obtained from the <br /> City, and a reasonable number of field verifications. The information from existing documentation will be field <br /> verified by observation only or aerial photographs. Facility inventory will also include existing facilities by other <br /> agencies, i.e. Caltrans. The data accumulated will include size, material and age of the drainage facility. All <br /> reference drawings will be obtained by RBF from the City, County, and Caltrans. Due to the unknown nature of <br /> this work, a budget estimate of 90 hours is included in this proposal. <br /> Deliverables: <br /> 1. ESRI map files with updated data <br /> <br /> Task 4.2 Background Information Input <br /> RBF will upload the existing background data available from the City and County. Data will include a rectified aerial <br /> photograph, City and County storm drain data, and land use data. This task includes updating the existing <br /> horizontal alignment to include a full vertical network for use in the CivilStorm hydrodynamic model (Task 3.1). <br /> Because the extent of the effort to build the network is unknown at this time, a budget of 180 hours has been <br /> reserved for this task. <br /> Deliverables: <br /> 1. Base Mapping Data to be used in Report Exhibits <br /> 2. Pipe network vertical data input into CivilStorm <br /> <br /> <br /> II <br /> <br /> <br /> <br /> 25 <br /> r 20C-26 <br />