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File #: RES 2025-033    Version: 1 Name:
Type: Resolution Status: Passed
File created: 12/16/2024 In control: Town Council
On agenda: 3/4/2025 Final action: 3/4/2025
Title: Resolution Approving the Third Amendment to the Construction Contract with Garney Companies, Inc. for the Plum Creek Water Purification Facility Expansion Project [1929 Liggett Road Castle Rock, CO]
Attachments: 1. Attachment A: Resolution, 2. Exhibit 1: Contract, 3. Attachment B: Location Map, 4. Staff Presentation

To:                     Honorable Mayor and Members of Town Council

 

Through: David L. Corliss, Town Manager

 

From:                     Mark Marlowe, P.E., Director of Castle Rock Water

                     Matt Benak, P.E., Water Resources Manager

                     Walt Schwarz, P.E., CIP Project Manager

 

Title

Resolution Approving the Third Amendment to the Construction Contract with Garney Companies, Inc. for the Plum Creek Water Purification Facility Expansion Project [1929 Liggett Road Castle Rock, CO]

Body

________________________________________________________________________________

 

Executive Summary

 

Castle Rock Water (CRW) staff requests Town Council approval of a resolution (Attachment A) approving a Third Amendment to the Plum Creek Water Purification Facility (PCWPF) Expansion Construction Agreement (Exhibit 1) with Garney Companies, Inc. (Garney). 

 

The amount of the contract amendment is $41,821,534 and represents Work Package #3 (WP#3). This portion of the construction will include site concrete work, constructing the masonry building additions, process piping, HVAC, electrical with system integration work, and all other site and facility improvements. This proposed WP#3 is the final work package necessary to complete the overall PCWPF Expansion project.

 

As previously presented to Town Council, the PCWPF Expansion construction contract will be a Guaranteed Maximum Price Construction Management (GMPCM) arrangement.  PCWPF is one of the most advanced water treatment plants in the nation and has won numerous awards including the Engineering Excellence Award 2022 (American Council of Engineering Companies).  Construction work is to be awarded in three separate work packages. Garney was selected as the Construction Manager and General Contractor (CM/GC) through a competitive process and has a proven track record in the water and wastewater industry. GMPCM was successfully utilized by the Town for design and construction of the PCWPF Project completed in 2014 and PCWPF Advanced Treatment (AT) Project completed in 2021 (CM/GC was Garney for AT project).  Upon authorization to award WP#3, Garney will begin ordering long lead electrical equipment. Garney has mobilized onsite at the PCWPF and is in the process of preparing foundation work for the new pre-treatment building addition. Overall construction completion of the project is planned for Spring 2028 (including startup of new facility). 

 

The Final GMP for WP#3 based on project bidding documents (drawings and specifications), including General Conditions and other fees, developed by the Town and the design consultant in cooperation with Garney, was $41,821,534. Staff recommends executing an Amendment to the contract with Garney for WP#3 to construct the associated components of the Project. 

 

Current known and estimated project costs are shown below:

 

Burns & McDonnell  Engineering (BMcD)

Design (including $119,444            contingency)

$  2,508,324

TCR Permit Fees

Est. based on PCWPF Advanced Treatment project

$    120,000

 

 

 

Garney Companies  BMcD 

Pre-construction services   Constr. Phase Engineering Services (approximately 6% of Construction cost) 

$     311,022  $  4,016,202 

Garney Companies

Construction costs WP#1 (FGMP) WP#2 (FGMP)  WP#3 (FGMP)

 $ 18,571,591*                  $   6,739,585* $ 41,821,534* 

 

TOTAL

$ 74,088,258

*Actual

 

Budget Impact

 

Funding for this project was included in the 2025 budget in the project fund shown below. Current account balance in this account is approximately $52,273,254. 

 

Project

Account Number

This Contract

Advanced Oxidation Facility

211-4375-443-77-75

$41,821,534

 

Staff Recommendation

 

Staff and CRW Commission recommend Town Council approval of the Resolution as presented.

 

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:    Third Amendment to the Construction Agreement                      

Attachment B:    Location Map