RBF CONSULTING 3 - 2013 - Laserfiche WebLink

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Implementation Plan Work Plan RBF's experience in storm drain and drainage master plans in Orange County has allowed us to develop a scope of work that is flexible to meet each municipality's needs. The work plan includes a kick-off meeting and monthly meetings for the remainder of the project which allows for routine coordination and feeback between team members. A few key elements of our work plan are highlighted below. After reviewing the City's RFP, we identified the selection of the appropriate hydrology model as a key element of a successful Storm Drain Master Plan for the City. Based on our experience and the City's desire to utilize the CivilStorm program for both hydrology and hydraulics modeling, we have included Task 2.1. Since the CivilStorm program does not directly include the County's hydrology method, this task will determine the best hydrologic model which will meet the master planning goals of the City, and supports Orange County Hydrology procedures, and is compatible with CivilStorm. Also, in order to take full advantage of CivilStorm's hydrodynamic modeling, a pipe network which includes both vertical and horizontal data needs to be developed. Based on information from the City, the GIS and Microstation base files include horizontal alignment, size and facility type up to 1994, including as -built indexing (where as-builts were available). Task S.2 includes time to build the vertical component of the storm drain data needed to run the Civil Storm model. TASK 1— INVENTORY Task 1.1 Review and Compile Existing Watershed and Drainage Facility Data RBF will provide services to research, collect and review existing background data. Data collection includes existing City GIS drainage and watershed maps, utility index map, soils data, "as -built" construction drawings for the local x storm drain facilities, existing hydraulic and master plans of drainage, previous project reports, proposed development w kµ tentative maps or hydrology studies, EIR's, floodplain „ m mapping, Army Corps of Engineers' reports, proposed development plans. In addition, a field reconnaissance investigation of the project study watershed area will be performed. The field investigation will include a verification of the watershed conditions and accuracy of the existing improvement plans. Field reconnaissance of the project site and the immediate adjacent conditions of the surrounding watershed will assess flow restrictions and general surface flow patterns. Collection of available information from the City / County regarding the floodplain, including channel improvement plans, adjacent development or improvements, right-of-way, rainfall data, floodplain delineation, maintenance information, flood damage surveys, FEMA studies, topographic data, utility information, property ownership, and geotechnical data. A field review with ground photo inventory and analysis will be included in the final report of critical areas of interest or locations of severe flooding. RBF will coordinate with Orange County Flood Control District (OCFCD) to obtain downstream water surface control elevations for city storm drains which connect to OCFCD facilities. Deliverables (to be included as an appendix to the main report): 1. Inventory Log of all data collected ENCIPIC !_ 21