60 Tons of Material Removed from Coastal Treatment Plant

USST Focuses on Problem Areas to Restore Plant Capacity

A coastal wastewater treatment plant in North Florida was experiencing a loss of capacity and a decrease in flow due to sand and grit accumulation in their structures. U.S. Submergent Technologies (USST) was called in to assess the situation. Our knowledgeable and experienced team probed the facility and discovered a buildup of sand and grit in the aeration train, effluent channel, and anoxic tank structures.

USST’s Combination3® Truck has a 49-foot extended knuckle boom and can clean hard-to-reach places.

“Due to location, coastal water treatment facilities absorb year-round activity from people doing yard work and going to the beach. When that happens, fine silty sand ends up in the drainage system causing tremendous capacity loss for treatment facilities,” noted Paul Del Favero, Operations Manager at USST. “I am proud of our crew members for assessing the situation, finding the problem areas, and restoring flow to this facility safely and efficiently. Our cleaning efforts have resulted in healthier water returning to the ecosystem.”

Using USST’s Combination technology and GritGone Process®, crews removed 60 tons of paint filter dry material from three structures. Our patented Combination truck is more than just a simple vacuum truck; it has a jetter, vacuum, downhole pump, and 49-foot extended knuckle boom fully integrated on one chassis, delivering a powerful punch in the submergent cleaning industry. Our trucks can clean in wet conditions, while a facility remains online with no need to alter treatment flow, saving time and money.

Check out our video to learn more about the Combination technology.

If you’ve got grit, USST can Grit ‘Er Done!®  

Call one of our knowledgeable project advisors for a free site assessment or to ask any questions you may have at 844-956-1129 or email info@ussubmergent.com.

Over 22 Tons of Material Removed from 52 Feet Below Grade

A Hazardous Challenge Met by USST Crews and Equipment

In an urban area of Central Florida, two wet wells had filled up rapidly with rag, FOG, and sand and grit material. These structures serve as master lift stations for a city, (commercial and residential areas) keeping wastewater moving 52 feet below grade to the wastewater treatment facility. U.S. Submergent Technologies’ (USST) equipment was able to remove this stubborn material from the depth required and our crews came in to meet this challenge head-on, safely, and efficiently.

USST’s knowledgeable and well-trained crew members safely remove stubborn material from a deep well structure.

“This is the deepest wet well we have cleaned and might be the deepest in Florida,” said Paul Del Favero, Operations Manager at USST. “I applaud our team and their continued emphasis on safely getting the job done.”

Safety is the most important thing at USST, and a deep well is one of the most dangerous structures to clean in our industry. Our crews undergo competent person confined space entry training and possess hundreds of hours of experience for this type of job. USST also factors in precautions such as fall protection, atmospheric monitoring, explosion-proof ventilation, OSHA-10 training, and intrinsically safe lighting. Additionally, our patented and versatile equipment can handle removing a wide range of waste found in wastewater especially from deep wells.

Approaching this challenging project with the highest safety measures, USST crews employed a 60-foot ladder, Davit Arm, SRL winch, six-point harnesses, lifelines, and full PPE gear when moving in and out of these underground structures. The wet well structures were drained down and gates and pumps were locked out and tagged out to ensure there was no engulfment risk.

Using our patented Combination Truck’s powerful vacuum, crews removed over a foot of material expeditiously and without issue. USST’s vacuum delivers nearly double the CFM of a standard vacuum truck, which allows our crew to remove large amounts of wastewater residuals from 52 feet below grade and complete the job on schedule. 

In total, capacity was restored after 22 tons of material was removed from both deep well structures quickly and safely for the city’s wastewater system.

USST employs a variety of methodologies to capture debris using our versatile, one-of-a-kind Combination Truck and expertly trained crews, to learn more please call 844-956-1129 or email info@ussubmergent.com.

SediVision Gets To Work Saving Customer Thousands of Dollars

Eliminates the Guesswork of Material in Wastewater Tanks

In Southeast Florida, U.S. Submergent Technologies (USST) was able to provide visibility to managers of a wastewater treatment facility regarding their oxidation ditch and potential loss of capacity. The visibility was provided by USST using SediVisionTM, an exclusive tool that allows for complete visibility of sand and grit accumulation in wastewater tanks.

The SediVision perspective eliminates the guesswork of material in wastewater tanks.

In our industry, draining down a wastewater tank can be logistically difficult. Because the water is highly turbid, handheld rods are typically used to probe around the tank edges to determine the quantity of material. This is an unreliable means to estimate how much material is spread throughout the tank. For this customer, not knowing exactly how much material was in the tank created uncertainty, which typically leads to higher costs.

Uncertainty is the Achilles’ heel of our industry; uncertainty of the type, volume, and location of the material. For this project, uncertainty might have delayed much-needed maintenance on the oxidation ditch indefinitely. However, by utilizing our SediVisionTM technology, USST was able to provide greater certainty in the volume of material and present a solid work plan that was much more affordable for the customer.

Because SediVisionTM allowed for targeted cleaning efforts inside the tank, we were able to save this owner time and money. In fact, this project only cost half of what would be estimated using typical assumptions.

USST cleaned this tank while it was full, so the facility did not have to undergo any logistical difficulties associated with draining down. Using our powerful Combination3® Truck, our crew was able to reach the structure and remove all the material. Finally, after cleaning the tank, we were able to verify for our customer that the material was removed, and the job was done right.

Would knowing how much material has accumulated in your tanks be helpful?

Stop the guesswork and contact us to learn more at (844) 949-1032 or email info@ussubmergent.com.

Eliminating the Guesswork of Material in Wastewater Tanks

SediVision Provides Complete Visibility of Sand and Grit Accumulation

Over the years at U.S. Submergent Technologies (USST) we have cleaned hundreds of wastewater tanks for local utilities. This experience has identified a persistent issue for our customers, which is not having an accurate estimate of the material in their tanks due to a lack of visibility.

Because it is impossible to see through extremely turbid water and draining down wastewater tanks is frequently not an option. In our industry, we often find ourselves asking – What happens if there is more material in the tank than estimated?

At USST, we have solved the issues associated with uncertainty in the quantity of material in wastewater tanks. These issues include maintenance setbacks such as the scope of work, schedule, budget, and change orders. The solution is SediVisionTM, a decision-making tool that provides complete visibility of sand and grit accumulation in wastewater tanks.

By producing digital images of accumulated material that is stealing away valuable capacity, utility managers can plan for future maintenance with confidence. The value of this information is unquestionable, especially if you have ever encountered an incorrect assumption in the field. Knowing the quantity of material eliminates guesswork and facilitates the efficient allocation of resources.

With SediVisionTM you can make informed decisions (regarding scope, schedule, and budget) restoring your capacity. 

Contact us to learn more at (844) 949-1032 or email info@ussubmergent.com.

From Jobs Big to Small, in 2020 USST Solved It All

USST Crews Removed Over 10,000 Tons of Material in 2020

U.S. Submergent Technologies (USST) has been expanding on our versatility and widening our scope of experience by performing submergent cleaning all over Florida and in parts of Georgia. In 2020, USST removed more than 10,000 tons of material for our customers. Some of the material USST removed includes; sand, grit, sludge, rag, FOG, grout, lime, filter media, and biosolids.

“We are proud of our crews’ accomplishments, work completed, and the experiences gained. In 2020, our company stepped further outside the wastewater industry into potable, stormwater, and industrial applications. These valuable experiences expand our depth of knowledge when cleaning wet infrastructure,” said Denver J. Stutler, Jr., CEO at USST.

USST’s knowledgeable crews can restore the capacity of your wet infrastructure.

Two examples illustrate the capabilities and versatility of our crews and equipment.

In South Florida, crews removed over 400 tons of material to restore capacity and maintain flow for critical wet infrastructure, this project involved a few structures including a digester tank which required confined space entry. When this is required on a project, USST crews take extra care to follow our company’s detailed Confined Space Program. Crew members ensure that the presence of atmospheric hazards are eliminated through proper ventilation and constant monitoring of air quality. Learn more about the importance of safety at USST by clicking here.

Meanwhile, in Central Florida, USST restored approximately 2500 gallons of treatment capacity at a small community package plant. Because of our patented Combination3® technology, the plant did not need to shut down or go off-line to perform the cleaning. USST’s Combination3® Truck is a versatile piece of equipment with a powerful vacuum, downhole pump, jetter, and extended-reach boom. These trucks can clean in wet or dry conditions in up to eight different setups without bringing multiple pieces of equipment to the job site.

USST can clean in submerged conditions with no need to
shut down or go off-line.

Are you interested in restoring the capacity of your wet infrastructure in 2021?

Call one of our knowledgeable project advisors for a free site assessment at (844) 958-1253 or email info@ussubmergent.com.

Introducing SediVision, A Decision-Making Tool for Allocating Limited Resources

SediVisionTM allows you to see the conditions beneath dark water due to excessive turbidity in your tanks

Given most wastewater infrastructure is out of sight, it often can be out of mind unless it becomes an emergency. Because the water in these structures is highly turbid, it can be difficult to see what is beneath the water stealing your valuable capacity. To help managers responsible for the maintenance of critical wet infrastructure, U.S. Submergent Technologies (USST) developed a remarkable decision-making tool designed especially for wastewater conditions called SediVisionTM.

SediVisionTM allows for complete visibility where there has never been any, under dark water in your tanks. This information can be used to guide the allocation of limited resources and direct cleaning efforts towards structures with the highest accumulation, resulting in a more efficient cleaning process.  SediVisionTM provides visibility and preparation for the project ahead, ensuring a more tailored solution, precise use of time and resources, and a quicker outcome to meet your needs.

When visibility is crucial to the job ahead, SediVisionTM allows you to see the conditions beneath dark water in your tanks.

USST’s SediVisionTM Provides:

  • Comprehensive pre-and post-cleaning inspection images and reports.
  • Recommendations for the best course of action for removal of material.

Would knowing how much and what the material is in your tanks be useful?

USST’s SediVisionTM can help you make better decisions managing limited resources while prioritizing critical wet infrastructure. 

Call one of our knowledgeable representatives at (844) 949-1032 or email info@ussubmergent.com.

U.S. Submergent Technologies Solves Problems Outside Wastewater Industry

In Southern Florida, Over 14 Tons of Material Removed from Salmon Fishery

Recently, U.S. Submergent Technologies (USST) had a chance to use our tools and team to solve problems outside the wastewater industry. A salmon fishery required the removal of waste material from three of their tank structures to restore vital capacity and maintain flow. USST’s powerful Combination3® Truck, a versatile patented piece of equipment, was used to safely and efficiently remove over 14 tons of material from these structures.

“The versatility of our Combination3® Truck allows us to access and clean structures outside of typical wastewater treatment facilities,” said Paul Del Favero, Operations Manager at USST. “This is another outstanding example of our approach to solving a customer’s problems – understand the problem, apply the right tools, and get the job done safely with our qualified team.”

USST’s extremely versatile Combination3® Truck specializes in removing material from structures such as pipes, tanks, and lift stations while they remain in full operation.

A challenge on this project is one of the structures, the Chiller Tank, was inside a large building and would typically pose an access issue for waste removal services. However, USST’s crew using its pump while extending a vacuum hose attached to our powerful Combination3® Truck was able to reach the structure and remove all of the material.

The need for confined space entry to all three structures posed another challenge to the crew. Fish waste is high in H2S, or sulfide levels. USST’s highly trained crew excels at confined space entry and while this is the first time USST has cleaned fish residuals in an industrial setting we were able to tackle this challenge safely and efficiently.

USST’s well-trained crew performed atmospheric testing and discovered high traces of sulfide, then proceeded to ventilate the tank structures and get the sulfide levels down until it was safe for personnel to enter. Throughout the cleaning of these structures, restraints and harnesses were used and air levels were constantly monitored ensuring the safety of our crew members. USST undergoes confined space training every day and safety is always our number one priority on any job. 

Learn more about the structures we clean here.  

Do you have a challenging situation that needs attention?  USST’s Combination3® Truck makes restoring treatment or collection capacity easier than you think. Call one of our knowledgeable representatives at (844) 949-1032 or email info@ussubmergent.com.

Clean large diameter pipe while in service

Over 4,800 Feet of Large Diameter Pipe Cleaned and Inspected While in Operation

In Central Florida, U.S. Submergent Technologies (USST) cleaned and inspected over 1,900 linear feet of 36” pipe and 2,800 linear feet of 48” pipe. Our patented and versatile Combination Truck allowed USST to clean these large diameter pipes while they remained in service, with no need for bypass or shutdown.

U.S. Submergent Technologies’ crew cleaning large diameter pipe while it remains in service
Using See, Clean, & Verify, U.S. Submergent Technologies’ crew removed 276 tons of sand and grit while remaining in operation.

During the 2020 rainy season, pipe systems were put to the test with additional flows from rainfall. This stretch of pipe was along a major thoroughfare and could not be taken out of service which presented unique challenges that only USST’s patented technology could resolve. Using our phased approach of See, Clean, & VerifyTM, 276 tons of sand and grit were removed while remaining in operation. Our SediVisionTM technology allowed USST’s crew to provide a post-cleaning inspection and verify for the customer that their pipe capacity was fully restored.


“When going into a job like this safety is our number one priority. Through extensive and ongoing training, the principle of safety is embedded into the function of every single crew member,” said Aaron Hood, Operations Manager at USST. “Our experience and dependability made for a winning combination with this challenge, and we were happy to meet it head-on, resolving this customer’s pipe capacity issues and restoring optimal flow.”


USST’s Combination Trucks are so much more than basic vacuum trucks.  Equipped with a powerful vacuum, downhole pump, jetter, and extended-reach boom, they can clean in wet or dry conditions in up to eight different setups without bringing multiple pieces of equipment to the job site. While on the job, USST crews can cycle roll-off trucks and steadily remove material, with no need to stop work, ultimately saving time and increasing efficiency.

Learn more about the structures we clean here.  

Have a challenging situation that needs attention?  The Combination Truck makes restoring treatment or collection capacity easier than you think.  Call one of our knowledgeable representatives at (844) 949-1032 or email info@ussubmergent.com.

USST’s Comprehensive Safety Operations Program Has You Covered

U.S. Submergent Technologies’ comprehensive safety operations program sets us apart from other companies. In addition to providing our customers with thorough, personalized safety plans for each jobsite, every member of U.S. Submergent Technologies’ experienced field crew has completed more than 80 hours of safety and compliance training with ongoing on-the-job instruction. Our crews expertly operate our one-of-a-kind patented technology while making safety our top priority. 

USST crews follow safety protocol while cleaning a tank in operation

Why a safety plan matters

A U.S. Submergent Technologies’ Health & Safety plan outlines — in detail — how we will approach the project at hand and the safety precautions that we will take while performing the work. A well-thought-out safety plan helps our crews, our customers, and our communities avoid dangerous situations, and just as important, a safety plan outlines the appropriate response in case an unexpected situation arises. 

What U.S. Submergent Technologies’ safety plans cover 

U.S. Submergent Technologies is committed to instituting and maintaining a comprehensive Health and Safety Program. The goal of our Health & Safety Program is to take the proper steps to prevent loss of life, injury, or property damage to all employees and members of the general public. U.S. Submergent Technologies recognizes that the responsibilities for safety and loss prevention must be shared by everyone.

Our plan typically includes but not limited to the following:

  • Site Specific Health and Safety Plan addressing risk assessment and hazards
  • First Aid and local first responder information
  • Transportation Plan addressing route hazards, route and fleet safety
  • Disposal Site Requirements and Compliance

Knowing the details above will ensure that all parties can get the right operators/employees involved and that everyone knows what to expect when walking onto a jobsite.

USST foreman follows the safety plan while cleaning pipe
Paul Del Favero, longtime USST Foreman.

How we make safety a priority 

The versatility of the Combination3® Truck often allows us to clean tanks and pipes while in service, reducing or even eliminating the need for confined space entry, if conditions allow. However, when confined space entry is necessary, our crews take extra care to follow our Confined Space Program, ensuring that the presence of atmospheric hazards are eliminated through proper ventilation and quality air monitoring. The space is made safe prior to entering. This activity is documented on our confined space permit.

In instances when confined space entry is unavoidable, you can trust that every member of U.S. Submergent Technologies’ experienced field crew will prioritize safety and that our safety operations program will ensure that you know what to expect throughout the process. 

For questions about our safety program or inquiries regarding specific issues your facility is facing, please call 844-765-7866 or email info@ussubmergent.com.

From Lime to Lawn Chairs: Materials We Remove from Pipes and Tanks

Sand and grit removed from oxidation ditch
Sand and grit removed from oxidation ditch.

We’ve seen it all: sand, grit, sludge, lime buildup, vegetation, and even larger debris such as metal handrails and lawn chairs limiting capacity in pipes and tanks. U.S. Submergent Technologies can remove any type of material (yes, even lawn chairs!) from wet or dry environments in a variety of structures.

We use the extremely versatile Combination3® Truck to specialize in removing material from structures such as pipes, tanks, and lift stations while they remain in full operation, and we can also perform work in a drain-down or bypass situation when larger debris is present.

Debris, boards, and vegetation removed from a stormwater box culvert
Debris removed from Stormwater Box Culvert.

A history of removing difficult material from pipes, tanks, and other structures

U.S. Submergent Technologies has tackled unique situations, including heavy lime accumulation in a large biological treatment unit, resulting in the removal of 60-tons of lime, sand and grit. We’ve successfully cleaned a tank overrun with 4-foot high vegetation sitting on an 8-foot root system. The U.S. Submergent Technologies’ crew once developed a crane attachment to be used with the Combination3® Truck’s extendable boom to reach and remove difficult rag material — and even a metal handrail — from a splitter box. 

Our experienced crew removed wood and lawn chairs from a stormwater box culvert, as well as more traditional projects, like the removal of 402-tons of sand and grit from an oxidation ditch (without a drain-down) and navigating 7,000-feet of gravity sewer while in service.

Expertise in removing a wide range of material 

U.S. Submergent Technologies has experience removing a variety of materials from all types of structures. Materials that we have direct expertise in removing, but aren’t limited to, are:

  • Sand and grit
  • Rag material
  • Sludge and biosolids
  • Wastewater residuals
  • Lime
  • Vegetation
  • Large debris
Rag material removed from splitter box structure
Rag material removed from splitter box structure.

Expertise in removing debris from challenging structures and situations

Our crews have quickly and safely removed debris from all kinds of environments under various conditions. Structures and situations we specialize in, but aren’t limited to, include: 

  • Tanks with high walls while in operation
  • Large-diameter pipes in submerged or surcharged conditions with no bypass
  • Deep wet wells while in service
  • Splitter boxes or box culverts while in operation

If you have a problem that needs solving, chances are we’ve handled it in the past and can offer a solution. We employ a variety of different methodologies to capture debris using our versatile, one-of-a-kind Combination3® Truck and expertly trained crews. Contact us to find out what we can do for you.