To: Honorable Mayor and Members of Town Council
Through: David L. Corliss, Town Manager
From: Mark Marlowe, P.E., Director of Castle Rock Water
Lauren Moore, Water Resources Manager
Zuzana Howard, Water Resources Program Analyst
Title
Resolution Approving a True-Up Payment for the WISE DIA Connection Project Invoice from South Metro WISE Authority [Denver City and County]
Body
________________________________________________________________________________
Executive Summary
Castle Rock Water is seeking Town Council approval of a resolution (Attachment A) authorizing payment of an invoice (Attachment B) from South Metro WISE Authority (SMWSA). This invoice totals $712,851.93 and represents the Town of Castle Rock’s 22.5% share of the WISE DIA Connection project true-up fee. The true-up invoice amount is $3,168,230.81. Additionally, there is a potential for a second true-up invoice resulting from a Commerce City use tax audit associated with the project.
The WISE DIA Connection Project was a collaborative effort between WISE, Denver Water, and Aurora Water. The project was developed to provide a means for Denver Water to deliver a portion of its water obligation to WISE while meeting required water quality standards. The project included approximately six miles of 18-inch PVC pipeline extending from Denver Water’s conduit No. 147 to Aurora’s Prairie Water’s Pump Station 2 (PWPS2), where a flow control and metering facility was located. The pipeline connected to Aurora Water’s Prairie Waters Pipeline, allowing water to be conveyed to the Binney Water Purification Facility and the WISE Pump Station for treatment and delivery to WISE members.
The WISE partners selected Tetra Tech to complete the design of the pipeline and flow control facility and JHL Constructors were the selected contractors. Construction began in June 2024 and is now 100% complete.
Budget Impact
This payment of $712,851.93 for the 2026 DIA Connection True-up fee will be paid from CIP/WISE Infrastructure account <211-4375-443.77-72>, project code <WRWPSF>. The account currently has a balance of $6.4 million.
Since 2014, Castle Rock has paid SMWSA a total of $1,994,350.20 for the DIA Connection. Including the 2026 payment, the Town of Castle Rock will have paid a total of $2,707,202.13.
Staff Recommendation
Staff recommends approval of the resolution as presented.
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
Attachment B: Invoice