Item 20 - Agreements for Capital Improvement Projects On -Call Engineering Services

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On -Call Engineering Services RFP No. 23-030- 7_ prepared at scale of 1" = 20' horizontal and 1" = 4' vertical for roadway profiles using MicroStation V8i version drafting software on a 24" x 36", full-size sheet. Street improvement plans will entail horizontal features of proposed curb returns, curb ramps, curb and gutter, sidewalk, cross gutter, spandrels and other surface improvements within the limits of the project. Necessary adjustments to surface utility features will be identified and addressed with call outs and construction notes. Improvements will be designed using City of Santa Ana Standard Plans, Caltrans Standard Plans, Standard Plans for Public Works Construction (SPPWC), and Public Right -of -Way Accessibility Guidelines (PROWAG). Deviations from applicable standards will be indicated on plans. Exceptions will require approval by the City. Task 9 — Hydraulic/Hydrology Analysis Our team will prepare a drainage report to address hydrology and hydraulics for the project site per Orange County Hydrology Manual and Orange County Local Drainage Manual requirements and will provide design recommendations. Modifications are intended to maintain existing drainage patterns and flows. Calculations will consist of comparing the pre- and post -project conditions at the site. Evaluation and recommendations are limited to the impacted portion of the storm drain within the project site. Catch basins will be incorporated into design, where necessary (i.e., to limit flooded width) and at low points. Evaluation of the downstream or upstream existing storm drain system is not anticipated for this task. Task 10 — Water Quality Kimley-Horn will develop a Water Quality Management Plan (WQMP) for the project in compliance with, and meeting the requirements of Order No. R8-2009-0030/NPDES No. CAS618030, of the Santa Ana Regional Water Quality Control Board (RWQCB). The WQMP will incorporate Low Impact Development (LID) Best Management Practices (BMP) to the Maximum Extent Practical (MEP). For example, the use of bioretention facilities within landscaped parkway areas will be in accordance with the United States Environmental Protection Agency (USEPA) Green Street standards. If traditional LID BMPs cannot be incorporated, appropriate proprietary BMPs will be selected to improve water quality. If proprietary items are needed, these will be indicated in compliance with the City's adopted public contracting code. Task 11 — Storm Drain Plans We will prepare storm drain plans showing proposed catch basins and lateral connections to the existing main lines. Catch basin sizing, inlet dimensions, and laterals pipe sizes will be determined as part of our analysis. Potential conflicts with existing utilities will be shown on profiles with approximate location of utilities, per the utility agencies readily available record drawings. Storm drain plans will be prepared at a scale of 1" = 20' horizontal and 1" = 2' vertical for profiles. Task 12 — Traffic Evaluation Kimley-Horn will evaluate appropriateness of signal phasing at project intersections. We will collect intersection peak hour traffic counts at the project intersection. If traffic counts cannot be collected due to the traffic conditions impacted by COVID-19, we will review/utilize available historical counts at the intersection. We will conduct a queueing analysis to determine left -turn pocket storage requirements Kimley)))Horn GMOC77011.2023 '"