Monthly Archives: September 2012

Best Management Practices

Erosion control is the first line of defense in protecting water quality at a

construction site. Reducing erosion at the source is much more effective and

efficient than trying to trap suspended sediment in surface water runoff. Erosion

control is achieved by protecting the soil surface from raindrop impact and

overland flow of storm water runoff.”

-From the Indiana Department of Environmental Management’s Storm Water Pollution  Prevention Plan.


This begins our e-news focus on the many options available for erosion and sediment control when formulating your Storm Water Pollution Prevention Plan (SWPPP). The series will be called: Best Management Practices and it will offer information both within this issue and in issues to come.

Part One

Vegetative controls are the most cost effective method of soil surface protection – and are certainly more aesthetically pleasing than hard armor systems such as rip rap or gabions.  One way to achieve vegetative control is to use Erosion Control Blankets

Erosion Control Blankets provide either temporary or permanent surface stabilization, creating a secure environment where seed can be established and vegetation can take root. Erosion Control Blankets are composed of mulch that is in a netting material. Contents range from natural fibers such as straw, wood and coconut to synthetic fibers. There are many types available and each has its own intentions and purposes for use. Erosion Control Blankets must be secured to the soil in order to reduce potential for movement from the intended site.



For more information on the types of Erosion Control Blankets available, click here:


Drainage Solution:

The Biobarrier® System was originally created in response to the U.S. Department of Energy’s need for a product that could be used in the closure cap of hazardous waste sites. The Goal: an invention that could prevent root intrusion and any possible chance that hazardous waste could get into the food chain. The Result: The Biobarrier® System; a unique method of root and weed control. The Biobarrier® System manages roots through the slow, controlled release of trifluralin, a root inhibition herbicide that has been in use on food crops in the United States for more than 35 years.

  When Biobarrier is used for root control, tree roots reaching the zone

of trifluralin are redirected, while roots outside the zone continue to grow

naturally. When Biobarrier is used for weed control, the root systems of

weeds do not grow in the trifluralin zone next to the fabric; roots of trees

and shrubs in the same area are below the zone and are not affected.

A pattern of 7/16-inch hemisphere nodules injection molded to Typar® geotextile fabric on 1.5-inch centers creates a continuous zone of root control protection.  The Biobarrier® System does not harm vegetation:  it works by creating a vapor zone where roots will not grow. Trees concentrate growth in branch roots away from the trifluralin zone and any roots reaching the zone begin to grow away from it.

Because it is a geotextile, the Biobarrier System is water permeable and does not disturb soil hydrology and is flexible enough to be contoured to follow the ground’s shape.


Biobarrier® Root Control Fabric


A survey of California cities taken nearly 10 years ago showed that more than $70 million was spent annually on root-infrastructure conflicts. Sidewalk repair alone cost $23 million and some $9 million was spent on legal claims. Tests have proven that root barriers cause roots to grow lower than the 18 to 24 inches in which they prefer to grow, which helps protect hardscapes from damage.


The Biobarrier® System is a geotextile which redirects roots due to the slow, controlled release of trifluralin. Trifluralin is released in vapor form, creating a root inhibition zone in the soil. Roots penetrate the zone until root tips reach the herbicidal concentration that prevents that species’ root tip cell division. Only the root tip cell’s ability to divide and grow is affected; neither the plant nor its roots are killed because trifluralin does not spread throughout the plant.


Install Biobarrier® Root Control Fabric vertically to inhibit tree and shrub root growth into:

  • Building Foundations
  • Golf Courses
  • Green roofs
  • Irrigation systems
  • Landscaped areas
  • Levees and dams
  • Parking lots
  • Retaining Walls
  • Septic Tanks/Fields
  • Sidewalks
  • Swimming Pools
  • Tennis Courts
  • Underground Pipes/Cables and Storage Tanks
  • Utility Substations

Biobarrier® Root Control Fabric eliminates root damage for 15 years…it’s guaranteed.

The results of Biobarrier® Root Control Fabric used on a retaining wall.

Roots are visibly growing away from the area where the fabric was placed. 

Glue: How To!

The glued joint connection between pipe and fittings is the last crucial link in a plastic pipe installation and can bring about the success or failure of the system as a whole. Therefore, it requires the same professional care and attention that is given to other parts of the system. There are recommended techniques for making high strength joints when solvent cementing plastic pipe and fittings in a variety of conditions.  The basic principles for solvent cementing small diameter plastic pipe can be found in this video provided by