RFLP_1-25_Scope_of_Work.pdf

PROFESSIONAL SERVICES AGREEMENT

Project Name: Cheyenne Dry Creek Union Pacific Railroad Crossing (RFLP 1-25)

Exhibit A – Scope of Work

Overview

Consultant services for the Cheyenne Dry Creek Union Pacific Railroad Crossing are the development of a feasibility study, benefit cost analysis, and preliminary design plans for additional stormwater detention in Kiwanis Park and additional conveyance under the Union Pacific Railroad (UPRR). Any innovative solutions that are cost effective and meet project goals will be incorporated during project scoping negotiations and included in the analyses/design. Work required for this project will include project management; field surveys, topographic data development, hydrologic/hydraulic analysis, and benefit cost analysis.

The project requires a professional design team that includes a Civil Engineer registered in the State of

Wyoming with a minimum of 10 years of project design experience in one or more of the following disciplines: hydrologic/hydraulic analysis, and benefit cost analysis for major stormwater projects; with the ability to provide in-house or capacity to sub-consult for survey services and those disciplines required for the project.

Project Description

The project is located along Dry Creek, both upstream and downstream of the Union Pacific Railroad

(UPRR). The Dry Creek Drainage Basin is approximately 14.6 square miles and extends from Warren

Airforce Base to I-80 east of Cheyenne. Development in basin has increased impervious area and associated stormwater runoff. In a significant storm event, water impounds against the 25’ high UPRR track embankment east of Pershing Blvd and is released under the tracks through a historic 6’ by 8’ by 75’ masonry culvert. The impoundment of water against the UPRR embankment has led to more stringent drainage requirements in the basin than other basins in the city.

The project will include a feasibility analysis related to the boring of several culverts under the UPRR embankment and increased detention both west and east of the UPRR tracks. Several conveyance and detention scenarios to be investigated are presented later in this scope of work.

The Dry Creek Master Plan Update (DMP) and the East Park Greenway Underpass and Drainage Plan at the Union Pacific Railroad documents provide conceptual detention layouts and culvert configurations at the now named Kiwanis Park for one of the scenarios to be investigated. The DMP lists this as the top priority project for the Dry Creek Drainage basin.

Project Tasks and Deliverables

The expected project tasks and project deliverables are as follows:

Task 1: Feasibility Analysis

• Feasibility analyses will be performed and will include in-depth discussions of the advantages and disadvantages of each scenario. Ultimately, the Consultant will provide recommendations on the preferred alternative. The following alternatives should be considered, at a minimum:

o Increase detention in Kiwanis Park to minimize flow increases through the proposed culvert configuration under the UPRR tracks. This alternative will minimize downstream impacts through detention and attenuation solely on the west side of the UPRR line.

o Allow for higher flow through the proposed culverts under the UPRR tracks and mitigate downstream impacts east of the UPRR line with minimal increases to detention west of the UPRR line.

o Increase detention in Kiwanis Park with increased flow through the proposed culverts under the UPRR tracks and mitigation of downstream impacts east of the UPRR line.

Mitigation of flooding will be accomplished on both sides of the UPRR line.

o Optionally, incorporate any other mitigative measures not specifically identified in this scope of work.

Task 2: Benefit Cost Analysis (BCA)

• Provide a Benefit Cost Analysis (BCA) for the preferred alternative including a comparison to the existing un-modified site. Benefits should include the following, at a minimum:

o Benefits to the City and Laramie County.

o The potential for expanded future development in the Dry Creek Basin.

o Benefits to the UPRR and interstate commerce.

Task 3: Preliminary Design

• Produce a preliminary plan (approximately 30% plan) of the preferred alternative. The plans should include the following, at a minimum:

o Plan and profile of channel realignment.

o Plan and profiles of conveyance structures.

o Plan and cross sections of proposed detention features and dams.

o Preliminary quantities and estimation of project probable cost.

Implicate to the afore-mentioned tasks will be those steps necessary to complete the feasibility analyses, BCA, and preliminary plans. This will include, at a minimum, the evaluation and collection of topographical data; gathering of required geotechnical data; evaluation and supplementation of existing hydrologic and hydraulic models; preliminary design of the overall site, detention features, dams, and culverts under the UPRR tracks; preliminary construction cost estimation; and data gathering supporting benefit calculations.

Project Funding and Timing

The city has $200k of funding available for the project. A portion of funds will be from a FEMA Building

Resilient Infrastructure and Communities (BRIC) grant and the remaining portion will be from the 1% optional sales tax (5th Penny).

The grant period of performance expires December 29, 2025. The final feasibility analysis, recommendations, BCA, and preliminary design plans will be completed on or before this date.

General Conditions

The following items are included as part of the basic compensation for this project:

• Normal business expenses - phone, postage, etc.

• Cost of insurance.

• In-house computer time and service.

• Word processing, accounting, and man-hour records.

• Permits and license fees.

• Mileage.

• Travel fees, room and board, per diem.

• Printing costs for all standard review, bidding, and as-constructed plans and other correspondence and contract documents.

• Film and processing.

Additional items which will be addressed:

All subconsultant fees at cost, which may include:

• Geotechnical Investigation.

• Surveying.

• Utility investigation.

Other items:

• Overtime engineering and inspection.

• Special inspections, including vacuum excavation pot-holing.

• Survey materials, stakes, etc.

• Additional required services.

Any changes in the Consultant’s or Subconsultant’s staff or fee structure will be presented in writing to the

City for approval prior to initiating any changes or performing any work.