CALL US AT: +1 (321) 222 9551

Proudly made in the USA

CALL US AT: +1 (321) 222 9551

Proudly made in the USA

Frequently Asked Questions (F.A.Q.)

Answers to The Most Common Questions

TURBIDITY BARRIERS

1. What is the difference between a Type 1, Type 2, and Type 3 Turbidity Curtain?
  • Type 1 should be used in protected areas where there is little or no current or wind.
  • Type 2 should be used in areas where there may be small to moderate current running up to 2 knots or 3.5 ft per second.
  • Type 3 should be used in areas where considerable current up to 3 knots or 5 ft per second may be present, where tidal action may be present and/or where the curtain is potentially subject to wind and wave action.
2. How deep does my curtain need to be?

The skirt should be deep enough to be 6” to 12” from the bottom of the riverbed or body of water being used in.

3. What is the difference between an Impermeable and Permeable curtain?

An impermeable curtain has a solid PVC skirt and will not allow anything to pass through at the skirt.  A permeable curtain has filter fabric incorporated into the skirt to allow some water to flow through, thereby preventing the skirt from ballooning out. A permeable curtain is important when working in currents or tidal applications.

4. Do we rent turbidity curtains?

Unfortunately, we don’t and that’s because once the product gets used it becomes too hard to sell and it doesn’t get rented out frequent enough to make it worth the while.

5. Can a turbidity curtain be cut to length?

No, and that’s because it has a chain at the bottom and cable at the top. Once these get cut it becomes difficult to reattach and the ends would also have to get sealed to allow for other sections to attach. It’s just not practical.

6. How do turbidity curtains connect?

The type 1 has grommets on the ends, and they simply get zip tied or laced together. The type 2 and 3 have ASTM universal aluminum connectors that connect by sliding one into the other and securing it with the attached toggle pin.

7. Do we offer custom depths?

We do offer custom depths as most jobs require a specific depth. The deepest that we usually manufacture in is 50 ft depth.

8. How long do these products last?

If maintained properly and depending on the fabric used to manufacture the product, they should last 2+ years.

9. Can they be stored after being used in a project?

Yes, once you are done using it, it should be removed out of the water, spread open on the grass, hosed down with fresh water, allow to completely dry, fold it the way you received it (like an accordion), tied it up, and proceed to store in a dry safe place.

SEAWEED BARRIERS

1. How strong are our seaweed barriers?

Seaweed barriers are designed to handle quite a load. They have been tested and proven to withstand waves up to 6 ft height, 9 mph currents (equivalent to almost 8 knots), and winds up to 25 mph.

2. What is the intent with the barriers – to contain or redirect the seaweed?

The intent is to use the currents to redirect the seaweed back out to sea.

3. How effective are seaweed barriers?

On a study done by Enviro-USA we reduced the amount of seaweed reaching the beach by 85%.

4. If the currents aren’t strong enough can the seaweed be redirected to the beach for removal?

Yes, on those occasions where the currents aren’t strong enough, it is best to redirect
the seaweed to a collection point for removal.

5. How do I determine if I need Medium or Heavy-Duty barriers?

You can call us and together we will evaluate environmental factors such as currents, winds, wave height, and the amount of seaweed, to determine which barrier is best for your application.

6. How do seaweed barriers get anchored?

This is determined by the type of seabed that you have. The most secure way is to anchor to a rocky seabed, but any type of anchor will work as the idea is to hold the barriers in place while redirecting the seaweed.

7. What colors are seaweed barriers available in?

As a manufacturer we can do just about any color, however our experience has shown that most hotels / resorts prefer green as it blends in with the environment.

8. Do seaweed barriers affect marine life?

No, the mesh that we use has small enough openings that fish or turtles cannot get caught up or tangled in it.

9. How long do seaweed barriers last?

Seaweed barriers are designed to provide years of usage.

OIL CONTAINMENT BOOMS

1. What size oil containment boom is most used?

Responders tend to use a 19” consisting of a 6” float x 12” skirt, with a top tension cable to make the product stronger. This size and strength allow versatility as it can be used in rivers, ports, lakes, ponds, bays, etc. (See ASTM F1523)

2. What accessories will I need when using an oil containment boom?

A Tow Bridle to tow the boom in place, Marker lights to illuminate the area, thereby preventing someone from running into the boom, and anchor systems to hold the barrier in place while the oil spill is being cleaned up.

3. What size oil containment boom should I use for a river?

Depending on the current.  An 11” Standard River boom consisting of 4” float x 6” skirt with a top tension cable will work great for slower currents. A 13” Standard Fast Current River boom consisting of 6” float x 6” skirt with a top tension cable is ideal for faster currents.

4. How should an oil containment boom be deployed in a river?

The boom should be angled down river to deflect the oil slick to a collection point. The faster the current the more angle you should give the booms and they should be set up in a cascade arrangement.

5. What size boom works best in ports?

A 19” (6×12) oil containment boom can be used in protected ports, however a 25” (8×16) should be used for unprotected ports due to winds causing choppiness and white caps. We also strongly recommend a stainless-steel cable instead of a galvanized cable so that it prolongs the life expectancy of the boom.

6. When should I use a standard oil containment boom vs a fence boom?

The fence boom has a flat float and strong winds will cause it to lean, whereas the standard oil containment boom has a round float which will tolerate pretty strong winds.

7. How important is the skirt depth (draft) on an oil boom?

In a river if the skirt is too deep it will cause a funnel like affect that will cause the oil to escape underneath the skirt, this can be prevented by using a boom with a shorter skirt or give the boom more angle to prevent this process from starting.

8. What lengths are oil containment booms manufactured in?

Most oil containment boom are manufactured in 100 ft sections; however, we usually manufacture in 100 and 50 ft lengths.

9. What happens to the float if the fabric around it gets cut or torn open?

The pocket will take on water and oil, however the oil will not affect the float as we use floats that are oil resistant.

10. Will oil or water in a float pocket cause the boom to fail?

No, that’s because the float will hold its integrity and continue to float. The amount of water or oil that a pocket can take on is not enough to cause the boom to fail.

ABOUT ENVIRO-USA

1. What is Enviro-USA’s specialty?

We specialize in Type 2, Type 3, and Permeable Turbidity Curtains, in 100 ft sections, for the marine construction industry. Our products have demonstrated the capacity to withstand rough environmental conditions. We also manufacture seaweed barriers, oil containment and permanent booms.

2. Which products do we try to always keep in stock?

For the marine construction industry, we always keep the Type 2 – 5 ft depth x 100 ft sections in inventory. For the oil industry we try to keep the Standard 19”x 100 ft Oil Containment Boom.

3. Which is less expensive per lineal foot (LF) 50 or 100 ft sections?

100 ft sections will always be less expensive per lineal foot and here is why; on a 100 ft section we must work on and supply materials for 2 ends, whereas 2 – 50 ft sections (100 LF) will require materials and labor on 4 ends.  More materials and more labor hours mean a higher manufacturing cost.

4. Which is less time consuming to install, 1,000 LF in 50 or 100 ft sections?

1,000 LF in 100 ft sections only requires that 9 ends be connected, whereas 1,000 LF in 50 ft sections requires 19 ends be connected.

5. Do we ship overseas?

Yes, not only do we ship all throughout the United States, but we also ship anywhere in the world.

6. Are we currently hiring?

Yes, we are currently hiring as Enviro-USA’s gameplan is to double our manufacturing capacity in the very near future and currently most all infrastructure is in place to achieve this goal, we just need a few more team members that want to grow with us.

7. What is our product warranty?

Our product warranty is 12 months, and it covers defective materials and workmanship.

8. Are Enviro-USA’s products manufactured in the USA?

Yes, we manufacture in Cape Canaveral, Florida.

9. Why Turbidity Curtains, Oil Booms, Permanent Booms, and Seaweed Barriers?

Because these products protect marine life. Enviro-USA’s goal is to “Protect and Preserve Aquatic Resources”.

Made in the USA - Enviro-USA