To: Honorable Mayor and Members of Town Council
Through: David L. Corliss, Town Manager
From: Mark Marlowe, P.E., Director of Castle Rock Water
Title
Resolution Approving a Construction Contract with 53 Corporation, LLC for the Omni Tributary - Prairie Hawk Drive to Red Hawk Drive Project [1662 Marsh Hawk Drive and 1551 Prairie Hawk Drive]
Body
________________________________________________________________________________
Executive Summary
Castle Rock Water is seeking Town Council approval of a Resolution (Attachment A) awarding a Construction Contract (Exhibit 1) to 53 Corporation, LLC, for the Omni Tributary - Prairie Hawk Drive to Red Hawk Drive Project. The contract amount is $1,337,740.00, plus staff requests a 10% Town-managed contingency in the amount of $133,774.00, for a total project authorization of $1,471,514.00. This project will be funded through the Stormwater Fund, and is located within Town owned open space between Prairie Hawk Drive and Red Hawk Drive (see Attachment B). This project will install stream stabilization improvements within the Omni Tributary drainageway and an Unnamed Tributary minor drainageway. This segment of tributary is significantly degraded, and if stabilization is not performed in the next several years, there is the risk of continued degradation which will impact water quality, private property, and public infrastructure. The project is scheduled to be completed by September 2022.
Notification and Outreach Efforts
All of the proposed improvements will be constructed within Town owned Open Space. Property owners adjacent to the drainageway will be notified in advance of the start of construction and informed of the project’s scope and duration. Periodic construction updates will be provided for the project’s duration. Temporary traffic modifications (lane closures, trucks and equipment entering/exiting the project site) and construction noise during normal working hours will occur during the project’s duration.
History of Past Town Council, Boards & Commissions, or Other Discussions
This item will be presented to the Castle Rock Water Commission on January 26, 2022.
Discussion
This project implements improvements recommended for Omni Tributary between Red Hawk Drive and Prairie Hawk Drive and on Unnamed Tributary in the Omni, Industrial and Westfield Watershed Master Plan (January 2011). The primary objectives of this project are to restore the drainageway channel to pre-development conditions, reduce flood risk to adjacent residential properties, decrease sediment transport downstream and preserve existing vegetation and trees to the maximum extent possible. This will be accomplished by raising the channel with earth fill material, constructing a series of grouted boulder drop structures, installing riprap to prevent channel bank erosion and restoring existing culvert riprap protection at two locations. Also, an existing triple culvert crossing of a neighborhood concrete trail will be replaced on Unnamed Tributary to enhance pedestrian safety. Additionally, maintenance access to the drainageway will be improved by constructing an aggregate surface maintenance path along the length of the project.
The Town solicited construction bids via Rocky Mountain BidNet. Bids were received from ten (10) contractors and are shown below:
|
Contractor |
Bid Price |
|
53 Corporation, LLC Civil Specialties, Inc. SaBell’s Civil and Landscape LLC L & M Enterprises, Inc. Concrete Express, Inc. (dba CEI) American West Construction, LLC Frontier Environmental Services, LLC Hudick Excavating, Inc. (dba HEI Civil) Summers Construction, Inc. Meridiam Partners, LLC Engineer’s Estimate |
$1,337,740.00 $1,443,858.74 $1,445,228.05 $1,978,319.00 $1,997,843.40 $2,095,468.00 $2,239,830.00 $2,365,006.50 $2,580,895.50 Incomplete Bid $1,700,000.00 |
|
|
|
53 Corporation, LLC is the confirmed lowest bidder, and has demonstrated that they are qualified to perform the proposed work under the contract, having successfully constructed previous similar projects for the Town and other local clients.
Budget Impact
This project was identified as a Legacy project under the bank loan approved by Council in 2019 and will be funded by Castle Rock Water through the Stormwater Enterprise capital accounts shown below. The shortfall in funds will be covered through the first quarter budget amendment utilizing unspent funds in the Stormwater Capital account 212-4475-444.77-28 from 2021 which has a remaining balance of $1.4 million.
|
Fund |
Account Number |
Amount |
Cont. |
Total |
2022 Budget |
|
Omni Trib Stabilization |
212-4475-444.75-76 |
$1,337,740.00 |
$133,774.00 |
$1,471,514.00 |
$ 784,000 |
Staff Recommendation
Staff recommends Town Council approval of a Resolution awarding a Construction Contract to 53 Corporation, LLC for the Omni Tributary - Prairie Hawk Drive to Red Hawk Drive Project in the amount of $1,337,740.00, plus staff requests a 10% Town-managed contingency in the amount of $133,774.00, for a total project authorization of $1,471,514.00.
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
Attachment A: Resolution
Exhibit 1: Construction Contract
Attachment B: Site Map