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ITEM 45

City Council Memorandum Public Works & Utilities Memo No. CP25-040

Date:

October 14, 2024

To:

Mayor and Council

Thru:

Joshua H. Wright, City Manager
Andy Bass, Deputy City Manager
John Knudson, Public Works and Utilities Director
Daniel Haskins, Capital Projects Division Manager

From:

Vivianna Barrientes, Engineering Project Manager

Subject:

Construction Agreement No. ST2101.401, Change Order No. 4, with Achen-Gardner Construction, LLC, for the Detroit Basin/Gazelle Meadows Park Storm System & Associated Improvements

Proposed Motion:

Move City Council award Agreement No. ST2101.401, Change Order No. 4, to Achen-Gardner Construction, LLC, for the Detroit Basin/Gazelle Meadows Park Storm System & Associated Improvements, in the amount of $295,637.89.

Background/Discussion:

The Galveston area projects are part of a revitalization effort to support the neighborhood through improved infrastructure and added amenities. The multi-faceted project is for storm drain system improvements to collect stormwater along Erie Street between Exeter and Monte Vista streets, including contributing flows along Nevada, Detroit, Hamilton, and Jackson streets. These improvements will carry the stormwater from this area to the existing Detroit Basin, also known as Gazelle Meadows Park, located at 500 North Exeter Street.

The overall Galveston area improvements are being performed by a single contractor through planned and budgeted change orders to facilitate phasing and coordinated delivery of all aspects of the scope of work. On September 21, 2023, City Council awarded Construction Agreement No. 2101.401 to Achen-Gardner Construction, LLC, for Phase 1 to include storm drain, potable water, and sanitary sewer systems improvements.

On October 16, 2023, City Council approved Change Order No. 1 extending the contract time by 120 days and adding $2,294,480.53 to the construction contract for alley and streetscape improvements, including pavement restoration on Erie Street.

Change Order No. 2 increased the cost of the Guaranteed Maximum Price by $95,078.15 to modify the sewer bypass pump system to allow the contractor to make repairs to six additional sewer services not shown in the design plans on Erie Street between Exeter and Hamilton streets.

On August 15, 2024, City Council approved Change Order No. 3, extending the contract time by 240 calendar days and adding $4,671,358.93 for Phase 2 of the project. This work includes Gazelle Meadows Park renovations and amenities and other additional concrete and catch basin work along Nevada Street.

This Change Order No. 4 is for the installation of American Disabilities Act (ADA) improvements along Erie Street between Arizona Avenue and McQueen Road. This work is required as part of the mill and overlay work that was added to the project as part of Change Order No. 1. The project scope of work consists of removing and replacing existing ADA ramps, adjacent aprons and valley gutters, and associated asphalt repairs. No additional time will be added as part of this work; therefore, the agreement time will remain at 570 calendar days to final completion, following the Notice to Proceed.

Evaluation:

Staff reviewed the scope of work, billing rates, and total fee for the Change Order No. 4 and determined them to be reasonable.

Financial Implications:

This change order is in the amount of $295,637.89, for a revised total agreement amount not to exceed $17,539,325.55.

Fiscal Impact

Account No.

Fund Name

Program Name

Dollar Amount

CIP Funded Y/N

401.3310.6210.6ST661

Capital General Fund

Detroit Basin Storm Drain Imp.

$295,637.89

Attachments

Location Map

Agreement - Achen-Gardner