Interoffice Memorandum
DATE: April 2, 2025
TO: Mayor Jerry L. Demings and County Commissioners
THROUGH: N/A
FROM: Ed Torres, M.S., P.E., LEED AP, Director, Utilities
CONTACT: Troy Layton, P.E., Manager, Field Services Division
PHONE: 407-254-9794
DIVISION: Field Services Division
ACTION REQUESTED:
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Approval and execution of Change Order Number 2, Y22-7022 South Water Reclamation Facility Aqua-Aerobic Filter Rehabilitation, with L7 Construction Inc., in the amount of $212,289.69, for a revised total contract amount of $4,750,577.59. District 6. (Field Services Division)
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PROJECT: N/A
PURPOSE: L7 Construction, Inc., has submitted a price proposal for additional services under the terms of Contract Y22-022. The original scope of the project includes refurbishment of eight existing Aquadisk filters at the South Water Reclamation Facility including removal and replacement of all motors, pumps, valves, valve actuators, gauges, bearings, and process instrumentation and control system upgrades to accommodate the new devices.
The proposed Change Order Number 2, in the amount of $212,289.69, is required for the replacement of seven backwash actuator assemblies, one influent actuator assembly, one junction box replacement kit, and two backwash pumps that were all submerged when the filter #5 containment area flooded. The flooding happened from the existing inlet valve on filter #2 failed and had not yet been rehabilitated. The vendor, Aqua-Aerobics conducted a field survey of the damaged components on filter #5 and provided a list of components that need replacing as the electrical components, motors and gear were not designed to be submerged. Change order #2 also provides for the addition of float switches at all eight filters.
A summary of the previous change orders is provided below.
Change Order Number 1 in the amount of $74,587.90 included replacement of the existing backwash pump piping on all eight disk filters. The existing backwash piping had started leaking and had required numerous repairs prior to awarding this contract. The change order to replace the piping was to ensure system reliability. Change Order 1 added 318 non-compensable days to the Contract due to the delay in material fabrication and delivery as stipulated by the filter vendor and not anticipated in the original project bid documents.
The original contract was in the amount of $4,463,700.
Change Order number 2 increases the contract value by $212,289.69 or 6.43%. The revised contract amount is $4,750,577.59.
BUDGET: N/A