To: Members of the Castle Rock Water Commission
From: Mark Marlowe, P.E., Director of Castle Rock Water
David Van Dellen, Stormwater Manager
Title
Resolution Approving a Construction Agreement between the Town of Castle Rock and Contractor, for the Covy Court Stormwater Improvements Project [1795-1819 Covy Court]
Town Council Agenda Date: July 19, 2022
Body
________________________________________________________________________________
Executive Summary
Castle Rock Water is seeking Town Council approval of a Resolution (Attachment A) awarding a Construction Contract (Exhibit 1) to Contractor, for the Covy Court Stormwater Improvements Project. The contract amount is $000,000.00, plus staff requests a 10% Town-managed contingency in the amount of $00,000.00, for a total project authorization of $000,000.00. This project will be funded through the Stormwater Fund, and is located within Woodlands Master Association owned open space north and east of Covy Court (see Attachment B). This project will replace an existing surface drainage swale system with underground storm sewer pipe and manholes to eliminate frequent overtopping of the swales that has resulted in damage to the open space and concrete trail traversing the area. The project is scheduled to be completed by November 2022.
Notification and Outreach Efforts
All of the proposed improvements will be constructed within home owner association (HOA) owned open space, over which the Town has a drainage easement in place for construction and maintenance of storm drainage facilities. Property owners in the vicinity of the project, along with Woodlands Master Association 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 (trucks and equipment entering/exiting the project site) and construction noise during normal working hours will occur during the project’s duration.
Discussion
This project is intended to improve an existing surface drainage ditch system for two separate storm sewer outfalls in the open space north and west of Covy Court. This system has insufficient capacity to convey major storm flows and presents both an undue maintenance burden to the Town and danger to pedestrians using the concrete trail that traverses this area. Storm overflows result in erosion of the slopes and damage to native vegetation, along with shortening the service life of the concrete trail. Additionally, frequent ice buildup on the trail in the winter is a safety hazard to users.
The Town solicited construction bids via Rocky Mountain BidNet. Bids were received from five (5) contractors and are shown below:
|
Contractor |
Bid Price |
|
Bidder #1 Bidder #2 Bidder #3 Bidder #4 Bidder #5 Engineer’s Estimate |
$000,000.00 $000,000.00 $000,000.00 $000,000.00 $000,000.00 $737,000.00 |
|
|
|
Contractor 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
Funds for this Construction Contract will be charged to the account below and will require a budget amendment from stormwater capital reserve scheduled to be included with the Second Quarter Budget Amendment.
|
Fund |
Account Number |
Amount |
Cont. |
Total |
Budget |
|
Drainageway Stab - PC |
212-4475-444.78-02 |
$000,000.00 |
$00,000.00 |
$000,000.00 |
$000,000.00 |
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 (Not Attached)
Attachment B: Site Map