As City Council may recall, on January 17, 2023 RFP23-001 was approved and awarded to Hennessy Construction Services Corporation for bidding and construction management services for the construction of the proposed Fleet Maintenance and Utility Warehouse and Storage Building located at 6420 Pine Hill Road. Prior to the construction phase, a subsurface analysis of the site was performed by Central Florida Testing Laboratories as a sub-consultant of Stroud Engineering Consultants, Incorporated. Subsequent to the testing, an estimated 200 to 300 cubic yards of grout was estimated to stabilize the subsurface. During the grouting process, a total of 370 cubic yards of grout was injected. As a result, I am presenting to you a change order in the amount of $70,091.11 which if approved, which brings the project total to $4,768,195.11. Incidentally, the funding to support this change order is recommended through use of the Water and Sewer Construction Fund, following a budget transfer from the Sewer Main & Manhole Rehabilitation/Lining project.
Finally, subsequent to the completion of the grouting process, Central Florida Testing Laboratories, Inc. submitted to the city a Completion Report for the ground stabilization program summarized as follows:
“Based upon the above cumulative information, it is our professional opinion that the recommended deep compaction grouting program has been implemented in accordance with our recommendation and industry standards and that the sinkhole weakened soil conditions previously identified within the limits of the grouting program have been sufficiently stabilized to eliminate ongoing soil weakening or the potential for soil collapse to occur.”