PACE Engineers, Inc. 11/12/2024 - Laserfiche WebLink

Deliverables: • 30% construction plans (22”x34”) in electronic PDF format. Construction drawings will include a cover sheet, legends and abbreviations sheet, plan and profile, traffic control plan, constructions notes and details sheet and site restoration sheet. The approximate sheet count will be as follows:  1 cover sheet  1 legend and abbreviations sheet  1 general notes sheet  1 survey control sheet  6 stormwater conveyance/grading plan and profile sheets • Preliminary cost estimate including material quantity calculation spreadsheets in electronic Microsoft Excel and PDF format Assumptions: • The City will provide the contract documents for inclusion in the project manual. • One (1) round of City review and comment preliminary plans and cost estimate if any, to be incorporated in the intermediate design. If additional rounds of review are performed an additional services agreement may be required. • The design of the future water quality facilities will not advance to the 60%, 90% or final design stages, TASK 500 –HYDRAULIC MODELING An SRH-2D model will be developed by PACE to model the existing and proposed conditions for a series of flow events to analyze how the stream reacts to different flow events. This information will include but is not limited to flow depths, velocity, water surface elevation, and shear stress. This information will then be applied to various subsequent analyses, such as scour, to ensure state standards and requirements are being met. Deliverables PACE will provide the following deliverables: • A packaged SMS SRH-2D model • SMS SRH-2D model results (to be incorporated into the Design Report) Assumptions: • The existing unnamed stream is fish bearing and the existing culvert across West Marilyn Avenue is considered a fish barrier • The crossing structure will be a modular concrete buried structure built offsite. • The City will provide any SWMMM files for PACE to utilize in order to update any of the hydraulic/hydrologic modeling and analysis. • City to provide previous modeling effort including basin delineation. TASK 600 –CONCEPTUAL CULVERT AND STREAM PLANS/DESIGN REPORT PACE will develop two conceptual design alternatives for the crossing structures. Due to the limited cover present at the culvert crossing the anticipated analysis will compare a 3-sided concrete box culvert against a 4-sided concrete box culvert. The design alternatives will define the crossing lengths, widths, and structure alternatives. The alternatives, which will account for high level cost considerations, will be presented at an Alternatives Selection meeting. PACE will define a preferred alternative within these