KOA - Laserfiche WebLink

Home Browse Search

SCOPE OF SERVICES AND SCHEDULE topographic features such as curbs, gutters, sidewalks, driveways, ramps, street lights, surface utilities such as manholes, water meters, fire hydrants, valve covers, etc. Horizontal control will be based on existing street centerline monuments and an assumed horizontal coordinate basis at each intersection surveyed. Vertical control will be based on a bench -mark system required by the City of Santa Ana. The survey will be plotted in MicroStation. All linework will be drafted and elevations will be plotted at BCR's, ECR's, etc. Survey base map shall be prepared in US Customary English units using City guidelines and in MicroStation V81 format. Horizontal datum shall be NAD 83 and vertical datum shall be NAVD88. KOA will verify the survey during a field investigation. 2.3 Field Verification Each site will be fully inspected in the field with respect to needs for preparing the design plans. Physical street improvements, underground or overhead utilities and obstructions, signing and striping, and other relevant items will be located in the field with precision to be shown accurately on the plan. All improvement information obtained from records will also be verified in the field in conjunction with this review. The project site will be fully inspected in the field with respect to needs for preparing the design plans. Physical street improvements, existing traffic signalization, underground or overhead utilities and obstructions, signing and striping, and other relevant items will be located in the field with precision to be shown accurately on the plan. All improvement Information obtained from records will also be verified in the field in conjunction with this review. 2.4 Geotechnical Investigation KOA has budgeted for a geotechnical subconsultant to perform a soil investigation at one selected mini roundabout or traffic circle location to determine the percolation rate. The geotechnical investigation will include collection of bulk and undisturbed soil samples from the site, laboratory testing, engineering analyses, and the preparation of a findings report. NTA ANA K0, A Deliverables • Utility notice responses log in Microsoft Excel • Topographic and spot survey base map in MircoStation V8i • Benchmark data • Geotechnical report Task 3 Traffic Evaluation 3.1 Data Collection KOA will collect as much traffic -related data possible from the City and will obtain traffic counts to perform the signal warrant analysis for the intersection of Main Street and 15th Street. Data will consist of but will not be limited to traffic intersection counts. The project corridor currently has 1 signalized Intersection, 3 all -way stops, and 7 two-way stop - controlled intersections. 3.2 Signal Warrant Analysis A traffic signal warrant analysis is required for a potential partial TOUCAN signal at the intersection of Main Street and 15th Street. Preparation of a traffic signal warrant analysis for approval by the City Traffic Engineer, outlining the justification of, and necessity for, the installation of the proposed signal is required. It is recommended that traffic volume information be obtained for benchmarking of traffic, pedestrian, and bicycle volumes at all traffic circle/mini roundabout improvement locations. A brief summary from technical analyses will be submitted to the City. The summary will serve the purpose of providing a brief narrative to justify the proposed improvements. KOA will meet face-to- face with City staff to discuss the results and finalize proposed treatments. Deliverables • Traffic analysis data • Summary of analysis results Task 4 30% PS&E While performing analyses in Task 5, KOA will start developing the 30% PS&E for the Bush Street 12