Most recent article for: Combination³® Truck

350 Tons of Material Removed from Basins in Central Florida

February 28, 2022
A Challenging Environment Calls for Skillful Pros In Central Florida, a 12 MGD reclamation facility was experiencing a loss of capacity in their north aeration and anoxic basins.  These tanks presented a challenge because they were lined with rows of diffusers that circulate oxygen feeding the microorganisms and bacteria residents that break down the waste.  This job required experienced professionals to access and remove the built-up material, so the customer called on U.S. Submergent Technologies (USST) for a solution.  USST has cleaned tanks, pipes, and lift stations on over 400 projects around the United States.  Our qualified crews know how to evaluate situations on the ground to get the job done safely and efficiently. “I am proud of our guys for navigating the hard-to-reach environment along the bottom of these tanks and capably removing large amounts of material,” said Eric Pace, Foreman at USST.  “Our patented equipment and thorough safety measures allowed us to get into these structures and complete the job safely without any incidents.” At USST, safety is our number one priority, and these structures were vast in size and 20-feet off the ground.  By executing a site-specific health and safety plan, our crews implemented confined space entry protocols, air quality monitoring, and other required safety measures to move in and out of these structures expeditiously.  USST’s versatile Combination3® Truck has a powerful vacuum that allowed the crew to reach and dispose of a total of 350 tons of sand and grit material.  To learn more about how USST can restore capacity and flow at your facility call 844-956-1129 or email  If you’ve got grit, USST can Grit ‘Er Done!®.
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September 28, 2021

364 Tons of Material Removed from Town’s Wastewater Plant

USST Crew Responds to Changed Conditions Adeptly In rural Northeast Florida, a municipal wastewater treatment plant operating at .4 MGD was reaching critical capacity loss with their surge tank.  This large multi-chamber tank, which is essential to the overall health and functionality of daily operations at the plant, required cleaning.  U.S. Submergent Technologies (USST) was called in to assess the structure and remove the buildup of sand and grit throughout this wastewater tank. “This project was estimated to have 36 tons of material in the tank, but once we got on-site, we were dealing with at least seven feet of

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August 31, 2021

Case Study: 630-Tons of Sand & Grit Removed from Oxidation Ditches

Florida Sand and Grit Grant Program Covers Restoration Costs PROBLEM: Two oxidation ditches at two wastewater treatment plants serving the City of Mount Dora were due for cleaning, having accumulated a significant amount of sand, grit, and debris over 15-years. This loss of capacity was increasing energy costs and reducing efficiency at these treatment plants. U.S. Submergent Technologies’ (USST) knowledgeable crew was called-in with our versatile Combination3® Truck, able to handle multiple setups to complete these projects. SOLUTION: A large oxidation ditch measuring approximately 50-feet wide by 330-feet in length was the first structure our crew tackled. While this oxidation

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March 26, 2018

One Truck, One Tool

23-Foot Deep Lift Station Cleaned While in Operation Tallahassee’s Summerbrooke lift station was due for scheduled maintenance, needing both FOGs on the surface and sand and grit on the bottom removed.  While this could have proved to be a challenging situation, the USST crew and equipment was able to restore capacity quickly and efficiently. USST’s Field Supervisor, Paul Del Favero, arrived with a team prepared to remove debris from wet or dry conditions.  Our patented Combination3® equipment allows our crew to remove debris from water surface and structure bottom without additional equipment or repositioning. “Our truck is uniquely equipped to

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February 21, 2018

20-Foot High Tank Cleaned While in Operation

180-CY Removed in Davie, Florida   Capacity was recently restored to the Town of Davie’s WWTP as part of their Capital Improvement Program, a facility which handles an average daily flow of around 3MGD.  More than 180-CY of sand and material was removed from Davie’s 20-foot high surge tank while it remained in full operation.  Using USST’s extended boom and Combination3® technology, the material removed was immediately ready for disposal. John McGeary has resided as Chief Operator of the Town of Davie’s WWTP for almost five years, and has 38 years’ experience in the wastewater industry.  He says “[I was]

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January 24, 2018

2,500-Feet of Large Diameter Pipe Cleaned

Access Issues Not An Issue   USST is currently working for the City of Orlando removing sand, grit and material from 2,500 feet of 48-inch sanitary sewer pipe near Kirkman Road, leading to the City’s Conserv II Water Reclamation Facility. The City of Orlando’s project manager, Charlie Conklin, P.E., says “I am very happy with their performance on this project, and I’m looking forward to utilizing their services on the next phase of this project and other future projects.” Access issues on the project included hard-to-reach manholes located on the opposite side of Shingle Creek. Access for equipment was also

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December 20, 2017

90-Tons Removed From WWTP

Facility Remained in Full Operation For more than 5 years, the Avon Park WWTP has been accumulating unwanted sand and grit, a problem that often leads to increased energy costs and reduces plant efficiency.  USST’s reliable crew was able to safely and efficiently remove 90-tons of sand and grit from Avon Parks’s headworks and two digesters. With an ADF (average daily flow) of about 850,000 gallons per day and a permitted capacity of 1.5 MGD (millions of gallons per day), this facility sought to restore the capacity of their facility as a preventative maintenance measure.  Using our GritGone Process®, the

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November 20, 2017

Lift Station Maintenance Made Easy

REDUCE THE RISK OF SANITARY SEWER OVERFLOW IN WET WELLS Wet well and lift station maintenance are a frequent source of concern for most wastewater collection systems. Performing regular maintenance can be difficult due to access challenges, costs associated with shutting down pumps, and confined space entry permitting and safety issues.   Wastewater systems rely on lift or pump stations to transport collected wastewater to a treatment plant.  Lift or pump stations typically include two to three pumps for redundancy — all of which require periodic inspection and maintenance.  More often than not, a wastewater facility may only have one operable

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October 16, 2017

Facility Remains in Full Operation While Cleaned

Capacity Restored in Charlotte County The Burnt Store Water Reclamation Facility (WRF) treats wastewater from more than 1,200 sewer connections in a southeastern portion of Charlotte County.  Acquired by Charlotte County in 2003, the former 0.25 millions of gallons per day (MGD) facility underwent several upgrades, including doubling its treatment capacity to 0.5 MGD, as well as enabling the facility to simultaneously dispose of reject water and excess effluent produced by the plant.   USST removed 21-cubic yards of sand and grit from three structures at Charlotte County’s Burnt Store WRF.  Thanks to our GritGone Process®, the facility remained in

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August 28, 2017

Debris Removed, Diffusers Unharmed

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