Water conditions (wind, wave height, flow rate) are important to ensuring proper anchorage is being used. In 10′ of water you will have 50′ of anchor lines on one or both side of the curtain. Best anchorage for turbidity curtains is a 5:1 slope. How much curtain do I need for my project?Īccount for the anchor rodes. Most curtains will be custom and not off the shelf. Turbidity Curtain Frequently Asked QuestionsĪre turbidity curtains in stock and ready to ship?Īccount for lead times of a few weeks to produce a curtain in the factory. Together, the Clean Water Act and NPDES have encouraged major product development by Elastec in order to keep up with our customers’ needs and allow them to remain in compliance with these regulations. Particulates may remain suspended in the water column for variable periods of time as a result of such factors as agitation of the water mass, particulate specific gravity, particle shape, and physical and chemical properties of particle surfaces.” To control these particulates, the NPDES recommends using silt screens or other appropriate methods to confine suspended particulate/turbidity to a small area where settling or removal can occur. Suspended particulates may enter water bodies as a result of land runoff, flooding, vegetative and planktonic breakdown, resuspension of bottom sediments, and man’s activities including dredging and filling. Requirements for suspended particulates/turbidityĪccording to the NPDES, “Suspended particulates in the aquatic ecosystem consist of fine-grained mineral particles, usually smaller than silt, and organic particles. According to the NPDES, sediment and debris from sites require MS4 operators to develop and implement a stormwater management program to reduce the discharge of pollutants in discharges from the MS4 to the maximum extent practicable, and to meet other permit requirements as determined appropriate by the permitting authority.
The implementation of the Clean Water Act and Phase II of the National Pollution Discharge Elimination System (NPDES) has led to major changes in operating procedures for the industrial sector.
Clean Water Act and National Pollution Discharge Elimination System (NPDES)
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