SUBJECT:
Title
A Resolution of the Town Council of the Town of Erie Approving the First Amendment to the Professional Services Agreement with Civil Resources, LLC for Final Design Services for the Boulder Creek Diversion Structure and Pipeline Conveyance Project
Department
DEPARTMENT: Utilities
Presenter
PRESENTER(S): Todd Fessenden, Utilities Director
Kieth Fiebig, Town Engineer
end
Time
TIME ESTIMATE: 0 minutes
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For time estimate: please put 0 for Consent items.
Fiscal
FISCAL SUMMARY:
Cost as Recommended: $109,212
Balance Available: $3,837,795.00
Fund Water Fund
Line Item Number: 500-75-110-605000-257514
New Appropriation Required: No
Policy
POLICY ISSUES:
This design work for this well off of Boulder Creek is critical to facilitate timely construction of new North Water Treatment Facility, in line with the 2020 Water System Master Plan.
Recommendation
STAFF RECOMMENDATION:
Approve the Resolution.
Body
SUMMARY/KEY POINTS
• This First Amendment to the Professional Services Agreement includes additional scope to perform final design services to relocate the diversion structure and add an underdrain system; perform additional geotechnical investigation and field aquifer pumping tests.
• The information obtained from additional testing is critical to design a reliable, creek diversion/headgate well or underdrain system
• This project will enable the Town to effectively utilize native groundwater and reusable water sources, thereby maximizing our water rights.
BACKGROUND OF SUBJECT MATTER:
The Boulder Creek Diversion Structure and Pipeline Conveyance Project plan includes the construction of an on-creek diversion structure on the east bank of Boulder Creek and a pipeline that will supply raw water to the North Water Treatment Facility, in order to produce potable water to meet future water demands. (see the Vicinity Map)
On Oct. 3, 2023, the Town Council approved a Professional Services Agreement with Civil Resources, LLC for the Preliminary and Final Design, bid support and construction support services for the project; for a fee of $74,500 and a contingency of $11,175.
Civil Resources has completed the preliminary design and a portion of the final design effort to 60% completion. This design is based on previous ground water aquifer investigations and estimated aquifer properties for a specific diversion structure location and pipeline alignment approved by staff. However, staff has requested changes to the design including:
a. Relocating the diversion structure to a location north of the original location to take
advantage of the creek bank contours to improve reliable flow into the diversion
and to avoid conflicts with a future storm water drainage facility;
b. Additional design effort for a “headgate” well system or underdrain pipeline to
increase the reliable yield of the combined creek diversion/aquifer system to supply
raw water;
c. Additional geotechnical investigation and aquifer pumping tests to enable more
accurate aquifer modeling and estimates of aquifer yield.
Civil Resources has submitted a formal scope and fee proposal for the additional services that is detailed in the First Amendment, Exhibit A-1 Scope of Services.
Given the urgency to provide new water treatment facilities to meet growing demands as well as provide redundancy, resiliency and a water supply off the Colorado River Basin, staff believe it is in the Town’s best interest to approve the First Amendment.
Staff recommend authorizing the First Amendment to the agreement for Professional Services for Final Design Services for the Boulder Creek Diversion Structure and Conveyance Pipeline to Civil Resources, LLC in the amount of $109,212. This includes a proposal amount of $88,800 and a contingency amount of $20,412.
Fiscal Impact:
The 2025 Water Fund Budget includes $3,837,795 for design and construction for the Boulder Creek Diversion Structure and Conveyance Pipeline project.
Agreement Cost Summary:
|
Item |
Estimated Cost |
|
Original Agreement |
$ 74,500 |
|
First Amendment |
$ 88,800 |
|
Contingency |
$ 20,412 |
|
Revised Agreement |
$ 183,712 |
Future items that may be presented for Town Council approval include: award of a construction contract and purchase of right-of-way or easement acquisition for the facilities.
priorities
TOWN COUNCIL PRIORITY(S) ADDRESSED:
☐ Attractive Community Amenities
☐ Engaged and Diverse Community
☐ Prosperous Economy
☒ Well-Maintained Infrastructure
☐ Small Town Feel
☒ Safe and Healthy Community
☒ Effective Governance
☒ Environmentally Sustainable
☒ Fiscally Responsible
attachments
ATTACHMENT(S):
1. Resolution 25-
2. First Amendment
3. Vicinity Map.