To: Honorable Mayor and Members of Town Council
Through: David L. Corliss, Town Manager
From: Mark Marlowe, P.E., Director of Castle Rock Water
Roy Gallea, P.E., Engineering Manager
Emily Huth, P.E., Project Manager
Title
Resolution Approving the First Amendment to Town of Castle Rock Construction Contract with Garney Companies Inc., for the RWRWTC LAS Conversion Project [Ray Waterman Regional Water Treatment Center]
Body
________________________________________________________________________________
Executive Summary
Castle Rock Water (CRW) staff requests approval of Amendment 1 to a Construction Contract (Exhibit 1) with Garney Companies (Garney) to complete construction of liquid ammonium sulfate (LAS) chemical conversion projects at the Ray Waterman Regional Water Treatment Center (RWRWTC). This project is being completed in two work packages. Work Package 1 was previously approved for $1,199,662 and is for procurement of long lead equipment. The First Amendment to the Contract includes Work Package 2 in the amount of amount of $2,734,805 to complete the balance of work at RWRWTC and a credit of $258,540 from Work Package 1 to remove the early procurement scope related to the Bell Mountain Ranch Water Treatment Plant (BMR) LAS Conversion project.
Budget Impact
Funding to complete construction of the entire RWRWTC LAS Conversion project, including construction engineering services, will be provided from the accounts listed below. A budget transfer will be completed to move $1,500,000 from the Plum Creek Diversion Structure project fund, Account Number 211-4375-443.77-54 to the Chloramine & WISE Modifications at RWRWTC project fund, Account Number 211-4375-443.77-72.
|
Project |
Account Number |
Budget |
|
Chloramine & WISE Modifications at RWWTC |
211-4375-443.77-72 |
$3,100,000 |
|
SCADA System Improvements |
210-4275-442.75-41 |
$1,300,000 |
|
Total |
|
$4,400,000 |
Garney’s proposed cost to complete Work Package 2 is $2,734,805. Staff recommends including a 10% Town managed Contingency resulting in a total authorization amount of $273,480. The First Amendment also includes a credit of $258,540 to remove the early procurement work related to BMR from the Contract. A summary of Garney’s Contract Amount is shown below.
|
Contract |
Contract Amount |
Town Managed Contingency (10%) |
Authorization Amount |
|
Previously Approved |
|
Work Package 1 - Construction Contract |
$1,199,662 |
$119,041 |
$1,319,628 |
|
Under Consideration |
|
First Amendment - Work Package 2 |
$2,734,805 |
$273,480 |
$3,008,645 |
|
First Amendment - BMR Work Package 1 Credit |
($258,540) |
|
($258,540) |
|
Total Construction Contract Value |
$3,675,927 |
|
$4,069,373 |
The total Authorization amount for Construction and Engineering scope for the RWRWTC LAS Conversion project is shown below.
|
Contract |
Status |
Authorization Amount |
|
Construction Contract Total (Garney) |
Under Consideration |
$4,069,373 |
|
Construction Engineering Services (BMcD) |
Under Consideration |
$298,096 |
|
Total |
$4,370,383 |
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
Staff Report
Attachment A: Resolution
Exhibit 1: Contract
Attachment B: Location Map