THE RIPARIAN EXPERTS

435 Mantoloking Road
Brick, New Jersey 08723
Phone (732) 477-6500
Fax (732) 920-8459
Environmentally Sensitive Installations

HORIZONTAL DIRECTIONAL DRILLING

LAND SURVEY
On all crossings a comprehensive land survey is required.
Land SurveyLand Survey
 

Don’t Raise The River Just Lower The Cable

Advantages of Directional Drilled River Crossings

Directional-drilled river crossings have many advantages, from cost savings to convenience to preserving the environment.

Drilled river crossings eliminate navigational hazards and can be accomplished without interrupting waterway traffic. Drilling can be completed in congested pipeline areas, often within ten feet of existing pipelines.

Drilled crossings provide a cost-effective way to install river crossings. Conventional dredge or bridge pipelines are expensive to install and require continued maintenance. Drilled crossings have a lower initial cost and  are maintenance free.

Underground Directional Drilling

Another cost saving is in time. Permits are generally faster and easier to obtain. And a wider work window can be achieved since weather and water conditions do not affect drilling or pipe installation.

Drilled crossings are not subject to bank erosions, anchor or dredging operations. And banks and river bottoms are left undisturbed, eliminating harmful effects on fish, vegetation and the natural ecology of the waterway.

Underground Directional DrillingUnderground Directional DrillingUnderground Directional Drilling
Directional Drilling
Underground Directional DrillingEnvironmentally Sensitive Installations

PROJECT REFERENCE

Submarine Fiber Optic Cable Installation Raritan River (Perth Amboy-South Amboy)

New Jersey Bell Telephone Company

March 1991

Installation of Four (4) 2” Innerducts Across Raritan River

Two of the innerducts contain a previously installed fiber optic cable. The remaining two innerducts are for future use.

The innerducts were buried into the river bottom by use of a cable embedment plow. Concrete mattresses were placed over the cables at the shoreline.

Caldwell’s Diving Company, Inc. was the prime contractor for this project.

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ENVIRONMENTALLY SENSITIVE INSTALLATIONS

Environmentally Sensitive InstallationsEnvironmentally Sensitive InstallationsEnvironmentally Sensitive InstallationsEnvironmentally Sensitive InstallationsEnvironmentally Sensitive Installations

CABLE INSTALLATION ACROSS WETLANDS

These photos show our cable embedment plow burying a cable across the wetlands. Note that they are only minimal disturbance of the wetlands after passing of the plow.

This minimal disturbance would be indicative of how the plow would operate on the waterway bottom. The cut into the bottom would only be as wide as the plow blade itself. Backfilling of the cut takes place almost immediately after the cut is made and the cable or conduit is installed.

Wetlands Cable InstallationsWetlands Cable Installations

INSTALLATION OF MULTIPLE CONDUITS SIMULTANEOUSLY

This photo shows that our embedment plows have the capability of burying multiple polyethylene innerducts.

The embedment plow can be modified to accommodate various numbers and sizes of innerduct.

Multiple Conduits Installation
 

Cable Embedment Plow

This photo shows the general configuration of the underwater cable embedment plow. The cables or conduits would enter the plow through the bellmouth at the top and exit through the shoe and the bottom.

The burial blade can be changed to accommodate the burial depth requirements of each particular project.

The plow is pulled through the wetlands by a specially designed amphibious tracked vehicle, which exerts one pound of pressure per square foot of contact surface. The “marsh machine” is equipped with special hardwood tracks to allow minimum damage to marsh areas.

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