Cypress Bore: The story of the toughest rig on the market

When the City of Pensacola was facing a difficult challenge re-routing an existing storm drain outfall to Pensacola Bay, Horizontal Directional Drilling (HDD) provided the answer. The City needed to construct new storm structures and conveyance pipe in an area of a known HAZMAT plume associated with an adjacent EPA_managed Superfund Site. EPA mandates required that the new pipe could not be direct-bury due to the presence of a contaminated high groundwater table.

A direct-bury pipe application would have required extensive groundwater de-watering of the contaminated area and the near by treatment facility could not accept such a high volume of pumped groundwater for treatment of the contaminants and proper disposal. Therefore, HDD technology was chosen as the most viable option for installing the conveyance pipes with less returns that could be quantified, containerized and properly disposed of.

City Engineer, Derrik Owens contacted both Gator Boring and EPA to discuss the feasibility of constructing 3 parallel 26” HDPE pipes via HDD with only 4’ of vertical cover, only 2’ of separation and less than 1% of fall over a 400’ run. “This was a very challenging situation that required us to apply technology that is not typically utilized for this type of application and the result was a successful project that was beneficial to everyone.” Derrik.

Roads, Inc. of Pensacola, FL was the successful bidder on the project. “Finding a good HDD sub-contractor was key to building this project. Gator Boring was able to fulfill all of the project specifications for HAZMAT certification, equipment requirements and gravity experience.” said Robby Williams, Vice President, Roads, Inc.

The first two bores were completed when on June 17, 2012 an unexpected flashflood hit Pensacola. Flood waters rose to within inches of vital engine components of the UNI 160x240 Universal HDD drilling rig. As quickly as the waters receded, the Universal HDD rig was up and running. Construction of the 400’ HDD portion of the project was completed on time, on grade and on alignment.

Carter Cranes stepped in to assist in installing the manholes custom fabricated by Southeast Precast. “It was a great experience to build this project for our community and to work with local contractors and suppliers.”, Eric Lyons, Vice-President of Gator Boring & Trenching, Inc.

All HDD returns were collected and disposed of as required and supervised by EPA. Horizontal Directional Drilling can be a viable solution for gravity pipeline installation as well as a variety of HAZMAT remediation/containment

Owner: City of Pensacola
Prime Contractor: Roads, Inc. 106 Stone Blvd. Cantonment, FL 32533 850-968-0991
HDD Contractor: Gator Boring & Trenching, Inc. 1800 Blackbird Lane, Pensacola, FL 32534 850-477-0742
Key Suppliers:
Carter Crane & Rigging, Inc. 3375 Hwy 97 S., Cantonment, FL 32533 850-474-0626 Southeastern Pipe & Precast 2900 N. Hwy 95A, Cantonment, FL 32533 850-587-PIPE Southern Drill Supply, Universal Dealership, 1735 E. Kingsfield Rd., Pensacola, FL 32514 850-471-1905

Photos

Cypress Bore: The story of the toughest rig on the market

Cypress Bore: The story of the toughest rig on the market

Cypress Bore: The story of the toughest rig on the market