RECOMMENDATION: The General Services Department recommends approval of a final contract amount of $718,105.43 and acceptance of work on the contract with DNB Enterprises, Inc., for Underground Storage Tank Removal (UST), Remediation, and Installation, Randolph St., William P. Hobby Airport – 4.75% above the original contract amount - DISTRICT I - ROBERT GALLEGOS
SPECIFIC EXPLANATION: On April 14, 2021, by Ordinance No. 2021-252 City Council awarded a construction contract to DNB Enterprises, Inc., for the UST removal, remediation, and installation at Randolph St., William P. Hobby Airport. The General Services Department recommends that City Council approve the final contract amount of $718,105.43 or 4.75% above the original contract amount, accept the work and authorize final payment to DNB Enterprises, Inc.
PROJECT LOCATION: 9016 Randolph St., William P. Hobby Airport, Houston, Texas 77061
PROJECT DESCRIPTION: The project removed and remediated one 12,000-gallon gasoline USTs (due to age), and one 6,000-gallon diesel UST (due to age), and associated appurtenances; installed one 12,000-gallon gasoline USTs and one 6,000-gallon diesel UST; supplied and installed associated self-service fueling systems; performed concrete saw-cutting, removal, and disposal; disposed of aqueous liquid and excavated soil; backfilled and compacted the excavation; replaced the fuel island canopy; and completed pour-back of concrete.
CONTRACT COMPLETION AND COST: The contractor completed the project within 540 days: the original contract time of 180 days, plus 360 days approved by Change Orders. The final cost of the project including Change Orders is $718,105.43 an increase of $32,582.93 over the original contract amount.
M/W/SBE PARTICIPATION: M/WBE PARTICIPATION: No City M/WBE participation goal was established for this project as the contract amount does not exceed the threshold of $1,000,000.00 required for goal-oriented contracts per Section 15-82 of the City Code of Ordinances.
PREVIOUS CHANGE ORDERS: Change Order Nos. 1 – 6 included the increased cost of the construction and installation of the canopy due to the original supplier and installers’ inability to comply with COH wage requirements; cooling/heating improvements to the IT room necessary to meet operating requirements; relocation of the electrical components to the IT Room; Relocation of the fiber optic line; credits to the City for materials and work not required to complete the project; and added days to the contract duration due to delays in equipment and material delivery, weather delays, delays due to time required for additional sampling and remediation.
WBS No: A-000665-0002-4-01-01, C-000185-0016-4-01-01, & G-000144-0016-4-01-01
DIRECTOR’S SIGNATURE/DATE:
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C. J. Messiah, Jr.
General Services Department
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Mario C. Diaz
Houston Airport System
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Troy Finner
Houston Police Department
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Samuel Peña
Houston Fire Department