Interoffice Memorandum
DATE: June 15, 2026
TO: Mayor Jerry L. Demings and County Commissioners
FROM: Carrie Mathes, FNIGP, CFCM, NIGP-CPP, CPPO, C.P.M., Manager II, Procurement Division
CONTACT: Lindy A. Wolfe, P.E. LEED AP, Manager II, Utilities Engineering Division
PHONE: 407-254-9918
SUBJECT: Approval of Change Order No. 4, Task Authorization No. 10, Contract Y20-905D, Bonneville Storage and Repump Facility Improvements
ACTION REQUESTED:
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Approval of Change Order No. 4, Task Authorization No. 10, Contract Y20-905D, Bonneville Storage and Repump Facility Improvements with Tetra Tech, Inc., in the amount of $93,933.20, for a revised total award amount of $760,596.48. ([Utilities Department Engineering Division] Procurement Division)
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PROCUREMENT:
Orange County Utilities (OCU) owns and operates the Bonneville Storage and Repump Facility (SRF) located at 3925 Sprague Drive, Orlando, Florida, within OCU’s Eastern Service Area. OCU has identified improvements to be implemented at the Bonneville SRF as part of OCU’s East Water Service Area Facilities Improvements Program.
During Orange County Building Permit review and coordination regarding proposed tree removal impacts associated with grading and stormwater improvements necessary for the project, the Zoning Division requested an alternative design to minimize impacts to the existing trees. The potential alternative stormwater design would extend the proposed pond into the southern portion of the property located outside the limits of the project. Therefore, additional geotechnical testing, site and tree surveys, and coordination with Florida Department of Environmental Protection for modification of the approved Environmental Resource Permit (ERP) are needed beyond the original scope for this project. These additional services will update the project final design to minimize tree removal impacts and obtain the building permit and ERP modification before the project can move into the bidding phase for construction.
These modifications will require additional survey, permitting, final design and construction administration services. The amendment will also extend the final design phase duration by six months for a total of 23 months. This project is located in District 5.
FUNDING:
Funding is available in account number 4420-038-1554-0015-6310.
APPROVALS:
The Utilities Engineering Division concurs with this recommendation.
REMARKS:
On August 11, 2020, the Board approved the selection of Tetra Tech, Inc. to provide Continuing Engineering Design Services for Utilities.
Task Authorization No. 10 was executed on December 16, 2022, in the amount of $501,614.27 for engineering services for the Bonneville Storage and Repump facility.
Previous Change Orders for this Task Authorization are as follows:
Change Order No. 1: Provided additional engineering services to evaluate the existing treatment and attenuation capacities of the Ground Storage Tank No. 1 Pond, identify improvements necessary to demonstrate compliance with ERP requirements, and support permitting of the pond. The change order also included design services for a canopy over the control panels of the proposed generator and fuel tank. The Board approved this change order on July 30, 2024, in the amount of $129,179.98, for a revised total amount to $630,794.25.
Change Order No. 2: Provided additional engineering services outside the original scope of work, including preparation of tree removal and tree protection design drawings required to obtain Building Department permits in accordance with the Zoning Tree Removal Ordinance, and development of a Stormwater Operation and Maintenance Plan for the two on-site ponds as part of the ERP permitting process. This change order increased funding by $35,842.03, for a revised total amount of $666,636.28.
Change Order No. 3: A no-cost change order that removed subconsultant Civil Site Engineering, Inc. (CSEI) and added Qu-E to the project team. CSEI requested to be released from the project after discontinuing its Site Civil Design and Maintenance of Traffic services. The remaining scope of work and associated fees assigned to CSEI were transferred to Qu-E, with no change to the overall Task Authorization amount.