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
Erin Evans, P.E., Project Manager
Title
Resolution Approving a Services Agreement with Dewberry Engineers, Inc. for the Plum Creek Diversion Upgrades Project [Located along plum Creek west of Sedalia, CO]
Body
________________________________________________________________________________
Executive Summary
Staff requests Town Council approval of a Resolution (Attachment A) approving a Services Agreement between the Town of Castle Rock and Dewberry Engineers for the Plum Creek Diversion Structure Upgrades Project. The Dewberry proposal cost is $470,867. This cost includes engineering design and permitting services to both upgrade the existing diversion structure as well as navigate initial permitting and conceptual design of a new surface water diversion (CR-2) on Plum Creek. The scope of services to be completed by Dewberry is detailed in the proposal included as an exhibit to Attachment A. Dewberry’s rate and fee schedule is also an attachment to the agreement.
Dewberry shall undertake the work upon execution of the agreement and shall complete the design by quarter four (Q4) of 2026. Construction is planned for 2026 / 2027. A location map of the existing Plum Creek Diversion Structure and proposed location for CR-2 is provided (Attachments B & C).
Budget Impact
Dewberry’s proposed fee is $470,867. Staff requests an additional $47,087 (Town-managed 10% contingency) be authorized for a total project authorization of $517,954. The project will be funded from the accounts shown below.
|
Account Name |
Account Number |
Amount Requested |
Contingency Requested |
2025 Budget |
|
Plum Crk Diversion Strc |
211-4375-443.77-54 |
$470,867 |
$47,087 |
$2,105,000 |
Staff Recommendation
Staff recommends Town Council approval of the resolution awarding the Services Agreement for the Plum Creek Diversion Structure Upgrades design services to Dewberry Engineers in the amount of $470,867 plus a Town-managed 10% contingency in the amount of $47,087, for a total authorization of $517,954.
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 - Plum Creek Diversion
Attachment C: Location Map - CR-2
Attachment D: Plum Creek Diversion Conceptual Design