To: Members of the Castle Rock Water Commission
From: Mark Marlowe, P.E., Director of Castle Rock Water
Title
Resolution Approving a Construction Contract Between the Town of Castle Rock and Tezak Heavy Equipment Co., Inc., for the McMurdo Gulch Stream Reclamation Priority 2 Project [McMurdo Gulch near the intersection of Castle Oaks Drive and Autumn Sage Street]
Town Council Agenda Date: December 7, 2021
Body
________________________________________________________________________________
Executive Summary
Castle Rock Water is seeking Town Council approval of a Resolution (Attachment A) awarding a Construction Contract with Tezak Heavy Equipment Co., Inc., for the McMurdo Gulch Stream Reclamation Priority 2 Project (Base Bid plus Bid Alternate 1) in the amount of $1,623,182.33 plus a 10% Town-managed contingency in the amount of $162,318 for a total authorization of $1,785,500.33. This project will be funded through the Stormwater Enterprise Fund and through the First Amendment to the Participation Agreement from the Cherry Creek Basin Water Quality Authority (Authority).
The project is located along McMurdo Gulch; at four sites near the intersection of Castle Oaks Drive and Autumn Sage Street. Improvements generally include stream channel improvements, boulder cascade drop structures, riffle drops, bank protection, water control, erosion control measures, seeding, planting and other appurtenances. This Priority 2 project will mitigate impacts and preserve the natural drainage way within these areas (see Attachment B). The project is scheduled to begin in December 2021 and be completed by June 2022.
The total project cost including construction is shown below:
|
|
Design |
Supplemental Engineering |
Construction |
Total |
|
Project Budget |
$329,008 |
$112,623 |
$1,785,500 |
$2,227,131 |
Notification and Outreach Efforts
Improvements will primarily be constructed within Town owned open space and designated drainage easements on vacant land owned by Starwood Land Ventures. Town staff will contact 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 Resolution No. 2020-105 approving the Participation Agreement between the Authority and Town for the Design of Stream Reclamation Improvements for the McMurdo Gulch Priority 2 Project on October 20, 2020. An amendment to this Participation Agreement in the amount of $540,000 is being presented for Council consideration concurrently with this request.
On January 7, 2020, the McMurdo Gulch Stream Reclamation Priority 2 Project design was presented to Council at which time a design contract was awarded to Muller Engineering Company, Inc.
The Authority Board approved the First Amendment to the Participation Agreement at their September 16, 2021 meeting.
Discussion
McMurdo Gulch is a western tributary to Cherry Creek, extending along the eastern edge of the Town. The entire McMurdo Gulch channel is approximately 6.7 miles long from the headwaters to the confluence with Cherry Creek and encompasses a tributary area of approximately 6.5 square miles. The 2011 reclamation plan focused on areas where the channel was experiencing stream degradation associated with head-cutting, failing berms with minimal vegetation, steep banks and incised channel areas. These areas of degradation were separated by healthy and stable segments of stream that had not experienced degradation yet. This surgical approach has shown tremendous success and has demonstrated a measurable improvement to nutrient concentrations through the Authority’s annual monitoring program.
The Authority was a funding partner with the Town for the design and construction of the 2011 McMurdo Gulch project. The project cost totaled approximately $1.5 million of which the Authority contributed $630,000. As part of the 2011 project, the Town and the Authority identified a need to assess stream conditions on a regular basis to determine when future improvements would be needed. The Town conducted a stream assessment in 2017 following significant growth in the upper headwaters of McMurdo Gulch.
Based on the Report summary, the Stormwater Division prioritized design of the recommended stream improvements in 2018 at four locations where the channel was experiencing stream degradation. The total length of these four areas was approximately two thousand lineal feet. Stream reclamation construction began in December 2019 at a total project cost budget for design and construction of approximately $1.677 million of which the Authority contributed $420,000.
The Stormwater Division prioritized design of additional recommended stream improvements in 2019/2020 with construction of the improvements proposed in 2021 and 2022. This Priority 2 project includes four locations (approximate length of 3,100 lineal feet) where the channel is experiencing stream degradation. Following approval of the design documents, the project was advertised for public bid from qualified contractors on October 22, 2021 on the Town’s Rocky Mountain Bid Net site. Bids were received from thirteen contractors on Friday, November 12, 2021. Upon review of the bids, project budget and project scope, Stormwater staff decided to proceed with award and construction of the Base Bid and Bid Alternate No. 1 for the project. Bid Alternate No. 1 included additional soil riprap bank protection at a location where the Black Hill’s gas line is located close to the channel improvements and additional coir mat bank protection was added in three locations along a wetland channel graded bench to further armor the floodplain bench.
|
Contractor |
Total |
|
Tezak Heavy Equipment, Inc. |
$1,623,182.33 |
|
53 Corporation, LLC |
$1,625,730.93 |
|
Hudick Excavating, Inc., dba HEI Civil |
$1,738,834.42 |
|
RME Ltd dba Elite Surface Infrastructure |
$1,775,273.23 |
|
L&M Enterprises, Inc. |
$1,812,741.18 |
|
Meridiam Partners, LLC |
$1,876,971.46 |
|
Castle Rock Construction Co., LLC |
$1,930,402.23 |
|
Naranjo Civil Constructors, Inc. |
$1,952,007.01 |
|
Total Terrain, Inc. |
$1,956,920.85 |
|
Engineer’s Estimate |
$2,130,364.00 |
|
Edge Contracting, Inc. |
$2,266,877.45 |
|
Frontier Environmental Services, LLC |
$2,277,123.25 |
|
American West Construction, LLC |
$2,492,498.15 |
|
Concrete Express, Inc. |
$2,496,678.65 |
Tezak Heavy Equipment, Co., Inc., is the confirmed low bidder, having also met the qualification requirements under the contract. Tezak is prequalified as a Category 1 contractor with Mile High Flood District. Their qualification package included multiple stream reclamation / channel stabilization projects for public entities including Mile High Flood District. Muller Engineering, the design engineer for this project, provided a positive recommendation for Tezak on a recent similar project on Big Dry Creek in Westminster, CO. Construction is anticipated to begin in December 2021 and be substantially complete by July 2022, weather permitting.
Budget Impact
Funds for this Construction Contract will be charged to the Stormwater capital account below. Additionally, the Town has requested construction funding from the Authority in the amount of $540,000. The Authority Board reviewed and approved this funding through the First Amendment to the Participation Agreement at their September 16, 2021 Board meeting.
|
Fund Description |
Account Number |
Amount |
Contingency |
Total |
2021 Budget |
|
McMurdo Gulch Stream Stbl |
212-4475-444.75-51 |
$1,623,182 |
$162,318 |
$1,785,500 |
$2,686,040 |
Staff Recommendation
Staff recommends Town Council approval of a Resolution awarding a Construction Contract with Tezak Heavy Equipment Co., Inc., for the McMurdo Gulch Stream Reclamation Priority 2 Project at a cost of $1,623,182.33 plus a 10% Town-managed contingency in the amount of $162,318 for a total authorization in the amount of $1,785,500.33
Proposed Motion
“I move to recommend to Town Council approval of the Resolution as presented”
Attachments
Attachment A: Resolution (Not Attached)
Exhibit 1: Construction Contract
Attachment B: Project Site Map