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File #: RES 2019-125    Version: 1 Name:
Type: Resolution Status: Passed
File created: 10/21/2019 In control: Town Council
On agenda: 12/3/2019 Final action: 12/3/2019
Title: Resolution Approving a Construction Contract with 53 Corporation, LLC for the Industrial Tributary Stabilization Project
Attachments: 1. Attachment A: Resolution 53 Corp Industrial Trib, 2. Exhibit 1: Construction Contract 53 Corp Industrial Trib with Bid Sheet, 3. Attachment B: Site Map (Revised 12/02/2019), 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 53 Corporation, LLC for the Industrial Tributary Stabilization Project




Executive Summary


Castle Rock Water is seeking Town Council approval of a Resolution (Attachment A) awarding a construction contract (Exhibit 1) with 53 Corporation, LLC for the Industrial Tributary Stabilization Project in the amount of $1,353,533, plus a 10% Town-managed contingency in the amount of $135,353, for a total project authorization of $1,488,886.  This project is funded through the Stormwater Enterprise and is located along Town open space east of the Miller Activity Complex (see Attachment B).  Drainageway improvements generally include grade control structures to restore the degraded stream, improve water quality and preserve open space, utilities and future trails.  The project is scheduled to be completed by May 2020. Funding for the project will come from rates (27%) and fees (73%) associated with growth.


This project is part of a broader effort to address legacy Stormwater needs in the Town. CR Water budgeted $10M in debt to be taken in 2020 to address these needs. Council approved Resolution 2019-119 to allow reimbursement of expenses in 2019 for this project against a potential debt issuance.


Notification and Outreach Efforts


The project is located within Town owned open space.  Staff will provide notifications via direct mailings to adjacent property owners, news releases and social media postings, as needed.  Project details and updates will be provided on


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


This project was identified in the Omni, Industrial and Westfield Watershed Master Plan Preliminary Design Report (Master Plan), adopted by Council through Resolution No. 2010-57 on September 7, 2010.


Castle Rock Water Commission will be provided with an update at the scheduled December 11, 2019 meeting.




The Master Plan, prepared in 2010, determined the need for stabilization measures along Industrial Tributary to mitigate for development impacts and restore a healthy and sustainable stream system.  Through the project reach, the channel is incised between 2 to 10 feet.  This project includes nine (9) grouted boulder grade control structures to restore the channel invert between Prairie Hawk Drive and the Miller’s Landing development.  


Environmental impacts and permitting are important considerations in channel improvement design.  Due to stream degradation, large pine trees are being lost from undercutting and erosion in the channel.  Although it would be impossible to save all existing trees during construction, significant effort was made in the design process to minimize the number of trees to be removed as a result of construction.  Additionally, the proposed improvements will restore essential root support along the drip line of existing trees to maintain ecological health along the corridor and temporary construction disturbances will be revegetated to restore upland and riparian habitat.  The Town has obtained authorization from the U.S. Army Corps of Engineers to construct the proposed improvements.     


The Town solicited construction bids via Rocky Mountain BidNet.  Bids were received from five (5) contractors and the pricing is summarized below: 




53 Corporation

 $ 1,353,533

Sabell's Civil & Landscape

 $ 1,434,194

ESCO Construction Company

 $ 1,538,586

Frontier Environmental Services

 $ 2,065,499

Iron Woman Construction

 $ 2,380,013

Engineer’s Estimate

$ 1,679,176



53 Corporation is the confirmed lowest bidder, having also met the qualification requirements under the contract.  Construction is anticipated to begin in December 2019 and be substantially complete by May 2020, weather permitting.


Budget Impact


This project will be funded through the Stormwater Fund, as shown below.  Total project costs, including contingency, are $1,488,886.








Industrial Trib Stabilization



$ 135,353


$ 821,479


These amounts will be funded through available 2019 budget, plus a supplemental budget request for additional funds required to complete this project.  Sufficient funds are available in the Stormwater capital reserve fund balance for this project. 


The total multi-year expenditures for this project are as follows:



Engineering & Permitting

Bid & Const Support




$ 102,297

$ 55,378


$ 1,646,561



Staff Recommendation


Staff recommends Town Council approval of a Resolution awarding a Construction Contract to 53 Corporation, LLC for the Industrial Tributary Stabilization Project in the amount of $1,353,533, plus a 10% Town-managed contingency in the amount of $ 135,353, for a total project authorization of $1,488,886


Proposed Motion


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




Attachment A: Resolution

Exhibit 1: Construction Contract

Attachment B: Site Map