Castle Rock Banner
Share to Facebook Share to Twitter Bookmark and Share
File #: RES 2019-061    Version: 1 Name:
Type: Resolution Status: Passed
File created: 4/3/2019 In control: Town Council
On agenda: 5/21/2019 Final action: 5/21/2019
Title: Resolution Approving a Construction Contract with RN Civil Construction, LLC for the Plum Creek Diversion Pump Station Project [located west of Sedalia, Colorado]
Attachments: 1. Attachment A: Resolution, 2. Exhibit 1: Contract, 3. Attachment B: Map, 4. Presentation

To:                     Honorable Mayor and Members of Town Council


From:                     Mark Marlowe, P. E., Director of Castle Rock Water



Resolution Approving a Construction Contract with RN Civil Construction, LLC for the Plum Creek Diversion Pump Station Project [located west of Sedalia, Colorado] 




Executive Summary


Castle Rock Water is seeking Town Council approval of a Resolution (Attachment A) awarding a construction contract (Exhibit 1) with RN Civil Construction, LLC (RN Civil) for the Plum Creek Diversion Pump Station Project.  The contract is for $9,228,500. Staff also requests approval for a ten percent Town-managed contingency of $922,850, for a total project authorization of $10,151,350.  

RN Civil shall undertake the work upon execution of the contract and shall complete the work fifty weeks thereafter. A location map for the proposed Plum Creek Diversion Pump Station is provided (Attachment B).   


History of Past Town Council, Boards & Commissions, or Other Discussions


The Plum Creek Diversion Pump Station is located at the Plum Creek Diversion site, west of Sedalia, Colorado.  The project is located within the Douglas County jurisdictional area.  The Douglas County Planning Commission approved the location and extents project application on December 3, 2018.  Castle Rock Water is currently working with Douglas County to obtain all of the required construction permits for this project.


Staff presented this project to the Castle Rock Water Commission on April 24, 2019.  The commission voted to support Castle Rock Water’s recommendation on this project, since bids were only received the day before and staff had not had time to thoroughly vet the bids.  Staff have since reviewed the bids and checked the references of RN Civil and recommend award of the construction contract.




In 2017 Castle Rock Water purchased United Water and Sanitation District’s infrastructure, which included the Plum Creek Diversion in Sedalia.  The Plum Creek Diversion structure has a capacity to capture up to 25.8 million gallons per day (MGD), but is only able to pump 1.15 MGD up to Castle Rock Reservoir 1.  This project is to construct a new Diversion Pump Station that is capable of pumping 25.8 MGD up to the reservoir.  This project will also construct the new Plum Creek Pump Station that will pump water from Castle Rock Reservoir 1 to the Plum Creek Water Purification Facility.  The Plum Creek Pump Station will initially be capable of pumping eight MGD and will be expandable up to fifteen MGD.


A Request for Qualification (RFQ) was advertised on Bidnet.  Castle Rock Water staff selected eight qualified contractors from the RFQ response.  The invitation to bid was sent out to the eight qualified contractors to provide bids for the construction of the pump stations.  Five contractors provided bids for the project.  The following table shows the results of the bidding process.



Consulting Firm

Total Cost

RN Civil

$ 9,228,500





T. Lowell





No Bid


No Bid


No Bid

Engineering Estimate



Budget Impact


Funding for this project was budgeted in the 2019 budget in the line item titled Plum Creek Diversion Structure, account no. 211-4375-443.77-54 WR-SDS.  This account has a current balance in the amount of $7,224,113.  Castle Rock Water will do a second quarter budget amendment to fund the shortfall from the Water Resources reserves account.  The table below provides a summary of the costs to-date and all estimated future costs.  The RN Civil contract fee is $9,228,500.  Staff requests an additional $922,850 (Town-managed ten percent contingency) be authorized, for a total project authorization of $10,151,350.





 Total Cost





Planning Permit




Construction Permit




Construction Phase Services




GESC Surety




Electrical Services










Total Costs



Staff Recommendation


Staff recommends approval of the construction contract for the Plum Creek Diversion Pump Station Project with RN Civil Construction, LLC in the amount of $9,228,500.


Proposed Motion


“I move to approve the Resolution as introduced by title.”




Attachment A:                     Resolution

Exhibit 1:                                          Contract

Attachment B:                     Map