To: Honorable Mayor and Members of Town Council
Through: David L. Corliss, Town Manager
From: Mark Marlowe, P.E., Director of Castle Rock Water
J. David Van Dellen, P.E., Stormwater Manager
Laura Kindt, P.E., Project Manager - Stormwater
Title
Resolution Approving a Construction Contract with 53 Corporation, LLC, for the East Plum Creek Reach 6 Stabilization Project [Adjacent to Plum Creek Water Reclamation Facility]
Body
________________________________________________________________________________
Executive Summary
Castle Rock Water is seeking Town Council approval of a Resolution (Attachment A) awarding a Construction Contract to 53 Corporation, LLC, for the East Plum Creek Reach 6 Stabilization Project in the amount of $1,353,006 plus a 10% Town-managed contingency in the amount of $135,301 for a total authorization of $1,488,307. This project will be funded through the Stormwater Enterprise Fund.
East Plum Creek Reach 6 parallels Santa Fe Drive (Highway 85) from the North Meadows Drive bridge at its upstream limit to the Plum Creek Water Reclamation Facility (PCWRF) at its downstream limit. Improvements generally include stream channel improvements, buried riffle drops, steel sheet pile, bank protection, water control, erosion control measures, seeding, planting and other appurtenances. This project will mitigate impacts and preserve the natural drainageway within the project area (see Attachment B). The project is scheduled to begin in January 2023 and be completed by August 2023.
The total project cost including construction is shown below:
|
|
Design |
Bidding and Construction Services |
Construction |
Total |
|
Project Budget |
$223,089 |
$132,534.00 |
$1,488,306.60 |
$1,843,929.60 |
Notification and Outreach Efforts
Improvements will primarily be constructed within Town owned property and developer owned property. The Town is in the process of securing a license agreement with Castle Rock Development Company for this work. Town staff will contact adjacent residents through notification letters and provide additional notifications through news releases and social media postings, as needed. Project details and updates are also provided on the Town website,CRgov.com.
History of Past Town Council, Boards & Commissions, or Other Discussions
Town Council approved the East Plum Creek Watershed Master Plan Preliminary Design Report through Resolution 2009-03 on January 6, 2009. This project was included in the recommendations from the Watershed Master Plan.
Castle Rock Water staff will present this construction contract to the Castle Rock Water Commission at their meeting held on January 25, 2023. Castle Rock Water Commission was given a preliminary briefing on this project at their December 14, 2022 meeting.
Discussion
East Plum Creek is the largest drainageway within the Town of Castle Rock limits other than Cherry Creek, which currently only has a minor segment within the Town limits. East Plum Creek Reach 6 flows from the southeast to the northwest to its confluence with Jarre Creek and West Plum Creek, combining into Plum Creek, the receiving water for the project. Plum Creek ultimately discharges to Chatfield Reservoir. The East Plum Creek Reach 6 Project limits include approximately 3,000 linear feet along the center line of the channel.
There were three previous studies completed for East Plum Creek, which include East Plum Creek Watershed Amended Flood Hazard Area Delineation 2013, East Plum Creek Watershed Master Plan Preliminary Design Report, 2009 and East Plum Creek Watershed Master Plan Stream Stability Report, 2007, that were referenced in the preparation of the design documents. The 2009 Master plan characterized East Plum Creek as having a wide floodplain with steep embankments and a low flow channel width of approximately 30 feet. Erosion in this section has caused slope failure and is slowly progressing towards private property. The 2009 Master Plan suggested proposed improvements including drop structures to reduce the channel slope. A stream gage will be reconstructed by United States Geological Survey (USGS) within the project reach following completion of the improvements. This gage will assist with accurate accounting of Town water rights along East Plum Creek.
Following approval of the design documents, the project was advertised for public bid from qualified contractors on November 22, 2022 on the Town’s Rocky Mountain Bid Net site. Bids were received from nine contractors on Thursday December 15, 2022. Bid results are included in Table 1.
Table 1: Bid Results
|
Contractor |
Total |
|
American West Construction, LLC |
$2,192,865.00 |
|
Concrete Express, Inc. |
$2,896,846.00 |
|
D4 Excavating |
$3,817,598.95 |
|
Edge Contracting, Inc. |
$1,989,391.00 |
|
Graham |
$2,084,434.00 |
|
Lawrence Construction |
$2,083,958.00 |
|
Meridiam Partners, LLC |
$2,378,715.89 |
|
Tezak Heavy Equipment, Inc. |
$1,758,487.32 |
|
53 Corporation, LLC |
$1,353,006.00 |
|
Engineer’s Estimate |
$2,438,558.00 |
53 Corporation, LLC, is the confirmed low bidder, having also met the qualification requirements under the contract. The Town along with 53 Corporation as the contractor have successfully completed multiple stream stabilization and drainage projects. 53 Corporation has a strong understanding of what is required to complete this work, and is a local contractor, allowing them to have a competitive bid. Previous projects completed by 53 Corporation have come in within budget, with minimal change orders. Although, 53 Corporation has a much lower bid than the other contractors as well as the engineer’s estimate, the Town is confident that 53 Corporation will successfully complete the job within budget. The design engineer for this project, provided a positive recommendation for 53 Corporation with recent experience on the Industrial Tributary project. Construction is anticipated to begin in January 2023 and be substantially complete by August 2023, weather permitting.
Budget Impact
Funds for this Construction Contract will be charged to the Stormwater capital account below. Construction of this project was originally budgeted in 2019 however this project was delayed by four years as a result of delays in getting the necessary permitting. This project will require a budget transfer from stormwater capital account 212-4475-444.75-52 which has a budget of $2,700,000 in 2023. Additionally, there is approximately $10 million available in capital reserves to complete this project and maintain other priorities in the coming year.
|
Fund Description |
Account Number |
Amount |
Contingency |
Total |
|
East Plum Creek Stream Stabilization |
212-4475-444.76-37 |
$1,353,006 |
$135,301 |
$1,488,307 |
Staff Recommendation
Staff recommends Town Council approval of a Resolution awarding a Construction Contract to 53 Corporation, LLC, for the East Plum Creek Reach 6 Stabilization Project at a cost of $1,353,006 plus a 10% Town-managed contingency in the amount of $135,301 for a total authorization in the amount of $1,488,307.
Proposed Motion
“I move to approve the Resolution as introduced by title.”
Alternative Motion
“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: Project Site Map