To: Honorable Mayor and Members of Town Council
Through: David L. Corliss, Town Manager
From: Mark Marlowe, P.E., Director of Castle Rock Water
Roy Gallea, P.E., Engineering Manager
Matthew Hayes, P.E., Project Manager
Title
Resolution Approving a Service Agreement with Dewberry Engineers Inc. for the Young American Infrastructure Improvements, Bell Mountain Raw Pipeline, and Bell Mountain Flow Meter Vault Upgrade Projects [Young American neighborhood and Bell Mountain Ranch]
Body
________________________________________________________________________________
Executive Summary
Castle Rock Water (CRW) is seeking Town Council approval of a resolution approving a service agreement (Attachment A) with Dewberry Engineers, Inc. (Dewberry) for the design of the Young American Infrastructure Improvements, Bell Mountain Raw Pipeline, and Bell Mountain Flow Meter Vault Upgrade Projects. In an effort to reduce administrative and contracting costs, gain economies of scale and generate more competitive engineering bids, CRW staff combined three separate but smaller design projects into one request for proposals. These three projects include the Young American Infrastructure Improvements, the Bell Mountain Raw Pipeline, and the Bell Mountain Flow Meter Vault Upgrade.
The Young American neighborhood was constructed in the mid-1970s and the water and sewer infrastructure is approaching the end of its useful life. The water distribution and sanitary collection systems will be designed for replacement and/or rehabilitation. The Bell Mountain Raw Pipeline Project design will provide a new raw water main to connect the Town's existing Denver Basin Well located off of Glade Gulch Road and the Town interest in the Dawson and Arapahoe Wells located off of Bell Mountain Parkway to the Bell Mountain Water Treatment Plant. The Bell Mountain Flow Meter Vault Upgrade Project design will provide a pipeline between the newly drilled Arapahoe Well and the existing flow meter vault. Currently, the flow meter vault only contains a single flow meter for the Bell Mountain wells. The vault will be upgraded so that each well has a flow meter and both wells can be run together.
Dewberry's project cost for the three projects is $623,784. Staff also requests approval for a 5% Town-managed contingency of $31,189, for a total authorization of $654,973. The scope of services to be completed by Dewberry is detailed in an attachment to the agreement (Exhibit 1). CRW staff have reviewed the scope and cost and believe the fee proposed by Dewberry to be reasonable.
Dewberry shall undertake the work upon execution of the agreement and shall complete the work 30 weeks thereafter, so by March 29, 2024 assuming a start date in August 2023. Location maps for the Young American Infrastructure Improvements and Bell Mountain projects are provided in attachments to the agreement (Attachments B, C and D).
Staff Recommendation
Staff recommends Town Council approval of the resolution approving the service agreement between the Town of Castle Rock and Dewberry for the design of the Young American Infrastructure Improvements, Bell Mountain Raw Pipeline, and Bell Mountain Flow Meter Vault Upgrades Projects in the amount of $623,784 plus a 5% Town-managed contingency of $31,189 for a total authorization of $654,973.
Proposed Motion
“I move to approve the Resolution as introduced by title.”
Alternative Motions
“I move to approve the resolution as introduced by title, with the following conditions: (list conditions).
“I move to continue this item to the Town Council meeting on _____ date to allow additional time to (list information needed).”
Attachments
Staff Report
Attachment A: Resolution
Exhibit 1: Agreement
Attachment B: Location Map for Young American
Attachment C: Location Map for Bell Mountain Ranch Pipeline Project
Attachment D: Location Map Bell Mountain Well and Meter Vault Upgrade
Attachment E: Final Draft Rehab Plan