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• • <br />Chapter 4-Site-Specific Industrial Storm Water BMPs <br />Advantages of Gradient Terraces <br />• -Reduce runoff speed and increase the distance of overland runoff flow <br />• Hold moisture better than do smooth slopes and minimize sediment loading of surface <br />runoff <br />Disadvantages of Gradient Terraces <br />• May significantly increase cut and fill costs and cause sloughing if excessive water <br />infiltrates the soil <br />• Are not practical for sandy, steep, or shallow soils <br />• <br />• <br />4-99