Underground Construction Magazine – Intersecting in the Florida Keys

Earlier this year, Utility Services Authority, LLC completed an intersect installation of 5,218 feet of 18-inch diameter HDPE pipeCudjoe Regional Wastewater HDD for a new wastewater line under Niles Channel between Ramrod Key and Summerland Key in Florida, approximately midway between Key West and Marathon.  The new pipeline is an integral part of a larger project to replace aging infrastructure, improve service for area residents and help preserve the pristine Florida waters.

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City of Naples, FL Utilizes Horizontal Directional Drilling with 20” Fusible PVC™ Pipe for 690LF and 3,260LF Crossings of Gordon River

city-of-naples-hddNaples is a crown jewel of Southwest Florida. Nestled on the sun drenched beaches of the Gulf of Mexico, Naples boasts one of the nation’s best sandboxes, with some of the calmest seas and challenging golf courses. The City’s Utilities Department provides water and wastewater services to over 65,000 residents and tourists within the 33 square mile service area.

As part of their mission to efficiently maintain the public water, sewer, and irrigation infrastructure, Utilities personnel teamed with CDM Smith engineers to develop a plan for pumping supplemental water from the Golden Gate Canal to the City’s 10 MGD Advanced Waste Treatment (AWT) Facility via a two mile, 20-inch PVC pipeline. This project was part of the Integrated Water Services Plan adopted in 2008 to mitigate the impact of increased irrigation that is expected to reduce available potable water by 25 percent. The raw water transmission main alignment required crossing environmentally sensitive wetlands along the Gordon River and a subaqueous crossing of the river near the AWT Facility.

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City of Daytona Beach Races Ahead with New Productivity Tool

city-of-daytona-beach-races-ahead-with-new-productivity-toolIn June 2008, a 16-inch-diameter cast iron water main ruptured in Daytona Beach, Florida. The main, one of three that service nearby barrier islands and beaches, was 61 years old.

The City of Daytona Beach’s Utilities Department sought a speedy solution to the ruined main that had put additional stress on two remaining water mains, both of which are also 50 to 60 years old.

The repair needed was critical. An Agenda Summary available through the City of Daytona Beach stated that “considerable additional stress” was placed on the remaining two mains and that because of the age of the mains crossing the Halifax River, there was “considerable uncertainty as to how long the two currently serviceable water mains would be able to sustain the increased stress levels of an extended emergency.”

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Energy Growth Fuels Large HDD Rig Boom

energy-growth-fuels-large-hdd-rig-boomHorizontal directional drilling (HDD) as it relates to utility construction usually is dated from the late 1980s when the first compact drill units became commercially available.

As directional drilling proved its value for installing underground power and communications cable and small-diameter water and natural gas pipe, sales of directional drills increased steadily — 1,415 units sold in 1995, 2,371 in 1998 and peaking in 2000 with 3,990 drill rigs sold, most of them with 100,000 pounds of pullback or less with the greatest number in the 30,000- to 50,000-pound pullback range.

However, the roots of the HDD industry date back to the 1960s, and the first successful HDD machines were big ones for pipeline construction. These machines borrowed and adapted established oil field technology to make horizontal bores that could be directionally guided. It is generally agreed the first HDD river crossing was in 1971 when a drill unit developed by industry pioneer Martin Cherrington bored under the Pajaro River near Watsonville in Northern California.

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Mud Recycling Plays Key Role in Utility Re-Locating Project

mud-recyclingOn Dec. 17, 2010, USA HDD Texas LLC, a division of Utility Services Authority, LLC (USA) of Belleville, Mich., began receiving the first of 15 semi tractor-trailers loaded with drill rod, reamers and support equipment into Beaumont, Texas, in preparation for one of Texas Department of Transportation’s (TxDOT) more unique projects.

The TxDOT is in the planning stages of rebuilding the Purple Heart Memorial Bridge, which extends across the Neches River, connecting Orange County and Jefferson County. However, before construction can begin, existing conduits containing utilities located on the bridge and directly under the proposed new foundations need to be rerouted to an area that will not be impacted by the approaching construction. The solution: to horizontally directional drill a 30-in. diameter steel casing 4,000 lf nearly 140 ft below the river bottom to serve as a carrier pipe for multiple conduits, which will house the relocated utilities. This is an area where Utility Services Authority LLC has a wealth of experience, especially in the eastern United States.

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Using HDD & HDPE Goes Deep & Long to Solve Leaks in Miami – by Steve Post

2012-hdd_sup.pdfThe goals were straightforward. Replace a leaking potable water line. Protect the environment. Provide customers with  reliable water for many generations. The path to success, however, for Miami-Dade Water and Sewer Department’s (MDWASD) Infrastructure Assessment and Replacement Program (IAARP) wasn’t as straightforward as the goals.

The new water pipeline would need to be embedded some 60 ft under the bottom of the Biscayne Bay and consist of one, 4,000-ft long line. The environment was fragile. Plus, the new line had to be leak-free and have a 100-year projected life span — the old one was just 25 years old. These issues were resolved because the county elected to use highdensity polyethylene (HDPE) pipe for this trenchless installation, which it has also been using in its 2-in. water line replacement program for several decades.

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Daytona Beach Races Ahead With HDD Solutions

daytona-beachIn June 2008, a 16-inch-diameter cast iron water main ruptured in Daytona Beach, FL. The main, one of three that service nearby barrier islands and beaches, was 61 years old.

The city of Daytona Beach’s Utilities Department sought a speedy solution to the faulty main that put additional stress on two remaining water mains, both of which are also 50 to 60-years old. Only three months were needed to get from mobilization to activation of a new replacement line.

Since the repairs were critical in nature, an Agenda Summary available through the city stated that “considerable additional stress” was placed on the remaining two mains and that because of the age of the mains crossing the Halifax River, there was “considerable uncertainty as to how long the two currently serviceable water mains would be able to sustain the increased stress levels of an extended emergency.”

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