Contract No. CVAG-22-022-01
Project: WCV Flood and Blowsand Road Improvement
AMENDMENT NUMBER ONE
to the
MICHAEL BAKER INTERNATIONAL, INC.
DESIGN, ENGINEERING, AND ENVIRONMENTAL SERVICES CONTRACT for the
WESTERN COACHELLA VALLEY
FLOOD AND BLOWSAND ROAD IMPROVEMENT PROJECT PHASE I
This AMENDMENT NUMBER ONE is made and entered into this 25th day of September 2023, by and between the Coachella Valley Association of Governments, a California joint powers agency (CVAG), and MICHAEL BAKER INTERNATIONAL, INC.(Consultant), and is made with reference to the following background facts and circumstances. All other terms and conditions shall remain the same as stated in the original Agreementdated September 26, 2022, for Western Coachella Valley Flood and Blowsand Road Improvement Project Phase I.
1. This Amendment Number One authorizes CVAG funds in the amount not to exceed $794,786 for additional Michael Baker International (MBI) design and engineering services as outlined in Exhibit A-1. Additional Scope of Services.
2. The total amount payable under this agreement shall not exceed $5,259,417.58.
Original Contract September 26, 2022 $4,464,631.58
Amendment Number One September 25, 2023 $ 794,786.00
Total Contract not-to-exceed $5,259,417.58
IN WITNESS WHEREOF, the parties hereto have caused this Amendment Number One to be executed by their duly authorized representatives on this date:
COACHELLA VALLEY ASSOCIATION MICHAEL BAKER INTERNATIONAL, INC
OF GOVERNMENTS
By: _______________________________ By: _______________________________ Tom Kirk, CVAG Executive Director Steve Latino, Associate Vice President Date: Date:
Contract No. CVAG-22-022-01
Project: WCV Flood and Blowsand Road Improvement
Attachment A-1
Michael Baker International WCV Flood and Blowsand Project Amendment No. 1
Additional Scope of Services
Flooding within the Coachella Valley at specific crossings has been an ongoing concern for years.
CVAG selected Michael Baker in 2019 to perform a study of twel ve locations throughout the Western Coachella Valley. One of the locations was the crossing of Varner Road at the Willow Wash. In 2022, Michael Baker was selected to proceed with the design of Indian Canyon Road in Palm Springs. As the project has progressed, CVAG has asked Michael Baker to include the Varner Road crossing at the Willow Wash, with the addition of the ultimate roadway widening from Date Palm Drive to Palm Drive in the City of Cathedral City. The proposed scope of work, which will be similar in nature to the scope for Indian Canyon Road, will include additional survey work as well as significant right -of-way impacts, an EIR/EIS, and supporting drainage, traffic signal designs (2 new and 1 modification), traffic control plans, and structural work to design the Varner Crossing at Willow Wash as well as Varner Road to its General Plan Ultimate configuration from Date Palm Drive to Palm Drive. Due to the timing of the work, this project will track on a different schedule than Indian Canyon Road, which is due to the timing of the biological studies needed to complete the environmental work.
MBI will expand their efforts to study blowsand mitigation that will include high-level research and analysis to further dive into potential alternatives forthe North Indian Canyon segment. Based on more recent technologies, CVAG staff and MBI believe it is prudent to expand the potential alternatives analysis to include underground tunneling, introduction of physical means for sand deflection, and the potential for covered roadways sections to mitigate sand concerns. This project is unique, in that it needs to mitigate the blowsands from entering the road, but that any solution will also mitigate the flooding that occurs along this stretch of roadway. As part of this analysis, MBI will include cost estimates for the proposed solutions, along with coordination and documentation of the poten tial environmental impacts of the proposed solutions and mitigation measures that could be acceptable to allow for the proposed improvements. MBI would also explore the opportunity to work with researchers to construct field test and evaluate empirical data to test blowsand mitigation concepts. and model the improvements to determine their impacts and effectiveness. If modeling of the site becomes a viable alternative, the cost associated with modeling will be considered additional work and will be negotiated based on the cost to complete the modeling analysis.
MBI will conduct a high -level Emergency Access Study for the City of Desert Hot Springs. The study will look at access in and out of Desert Hot Springs, in an effort to identify an all -weather corridor that would service the city during future storm events. The recent flooding caused by Tropical Storm Hilary has been noted to have severely impacted the Mission Creek Drainage and ultimately may have yielded 1,000 year storm level flows. In order to provide a resilient and continuous emergency access, MBI will utilize the 2019 Western Coachella Flooding and Blowsand Risk Assessment and Improvement Plan for Western Coachella Valley, and expan d upon its findings and recommendations. The team will coord inate with Riverside County Flood Control to obtain estimated flow rates through the region based on the recent storm and look at additional infrastructure improvements that could assist in providing un-interrupted access in the case of a significant flood ing event. Work will include coordination with regional agencies, environmental teams and City staff to determine potential impacts and mitigations of the proposed improvements. Each alternative will be analyzed for constructability and analyzed from a Contract No. CVAG-22-022-01
Project: WCV Flood and Blowsand Road Improvement
cost/benefit perspective. From this, various improvements shall be proposed and cost estimated to allow the City of Desert Hot Springs to program for and potentially apply for grant funding.