Type II turbidity curtains (also commonly referred to as Type 2 and silt curtains) are intended to control sediment and run off in slow moving waters. These turbidity curtains are built with foam filled floats that are referred to as Freeboards, combined with skirts that typically range in height from 5 to 50 feet. These floating silt curtains impede the flow of silt or sediment that may be suspended in the water. Type II turbidity curtains are typically used in slow moving waters such as lakes, streams, canals, slow moving rivers, inter-coastal and tidal areas. Type 2 silt curtains are feature the use of aluminum end connectors in combination with grommets on reinforced side seams. The connector plates are attached with toggle pins while the grommets are joined with rope, nuts and bolts or strong zip ties. 50 foot and 100 foot sections with 5 foot skirts typically in stock, and custom orders are available upon request. Neptune can construct these curtains to meet state DOT and local regulatory requirements.
Permeable Type II Turbidity Curtains: The permeable skirt is made of a geotextile fabric that allows water to flow through the curtain while still filtering any suspended silt or sediment.
Impermeable Type II Turbidity Curtains: These silt curtains are made with the same PVC fabric that is used for the floats. This fabric does not allow water to pass through, creating a barrier that fully blocks the water and any silt or sediment that may be suspended in the water.
Type II Recommended Conditions:
Coastal or Marine Construction, DOT Road and Bridge Construction, Dredging, Mining, Pile Driving