25B - AGMT - ENVIRONMENTAL SERVICES FOR WARNER AVE WIDENING

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PROJECT SLOPING Constraints Identification IBI Group will work with The Planning Center and City of Santa Ana to identify constraints within the project limits that will affect the feasibility and desirability of alternatives. Constraints will be researched to determine if they are "fatal flaw" items or merely items of concern. FIELD SURVEY/TOPO VA Consulting will establish horizontal and vertical survey control for the site, set panels, and arrange for aerial and ground survey of Warner Avenue between Main Street and Grand Avenue. When on-ground panels and utility features have been marked, the project area will be flown. The ground survey will include cross-sections at 100-foot Intervals. This field survey will also collect coordinates for any visible surface culture within the defined limits (manholes, catch basins, overhead wires, landscape, etc.) The aerial and ground survey data will be used to create topographic mapping, including surface features, right-of-way data, assessor parcel numbers, and contours for design purposes. The final topographic mapping for the project will be prepared on 24" x 36" sheets at a scale of 1" = 40' with 1-foot contours. Deliverable: Survey field notes, electronic files, and a hard copy of the topographic mapping PRELIMINARY ENGINEERING PLANS Subsequent to the selection a preferred Build Alternative by the City, a draft set of preliminary street improvement plans) will be prepared consistent with a 15% level of design development. The plans will include: existing and proposed (if applicable) street center lines; proposed curb lines, sidewalks, and parkway features; proposed driveway and curb return modifications; proposed lane geometrics; impacted surface and subsurface utility and drainage features; existing and proposed ROW; major street callouts; and approximate locations, limits, and heights of proposed retaining walls. Layouts of all this information will have a scale of I`-_50'(22"04"). Separate sheets will include proposed typical street sections. No profiles or elevation data will be included in the plans and the attached fee proposal assumes profiles will not be required. The proposed roadway modification alternatives selected for analysis will be reviewed for potential impacts to existing and future utility facilities and possible mitigations to likely utility impacts. The results will be summarized for the various utility alternatives and their cost, timing, and easement implications. All correspondence and meetings with the utility companies throughout this project phase will be summarized and documented in the Preliminary Engineering Report. The Draft plan set package will be submitted to City stag' for review and comment. Comments will be logged and formal responses prepared and submitted to the City for concurrence. The plans will be revised to address the comments and a final plan will be submitted to The Planning Center and the City. Deliverable: a Preliminary Engineering Report DRAFT ENGINEERING REPORT All items produced in the task above will be compiled into a single document and submitted to City staff for review and approval. The report will address civil roadway, traffic, access and safety, geotechnical, utilities/drainage, right of way, environmental, landscaping, and capital costs. IBI will prepare an outline for City staff to review before completion of the technical studies. City of Santa Ma - Proposal to Prepare Environmental Documents for Warner Avenue Widening Project The Planninj Center I Page 6 25B-9