Laserfiche WebLink
b <br /> n � <br /> D <br /> Temporary Berms and Diversions f° <br /> A Soil Berm or Diversion is a temporary compacted <br /> ridge that slows and diverts stormwater from an <br /> open traffic area or slope. Clean Water Diversions <br /> are designed to intercept and divert upland and <br /> clean runoff around bare soil areas. Berms and <br /> Temporary Diversions strategically direct runoff <br /> through a construction site to reduce erosion and <br /> sedimentation problems. Remove Berms and <br /> Temporary Diversions after construction. <br /> Tips <br /> • Berms should have a minimum height of 18 <br /> inches, side slopes of 2:1 or flatter, and a <br /> minimum base width of 4.5 feet. <br /> • Berms should be constructed out of subsoil and <br /> never out of salvaged topsoil. <br /> • Do not use berms in high-traffic areas where <br /> they will be continually run over. <br /> • Do not run Berms down a slope;watch for <br /> concentrated flows when the Berm directs water <br /> to one area. <br /> • Do not use sand and gravel or debris-laden <br /> material to construct a Berm. <br /> • Clean Water Diversions require approved project <br /> special provisions and details. <br /> Maintenance <br /> • Repair and inspect often for breaches. <br /> ........................1-3 ........................ <br />