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BMP C152: Sawcutting and Surfacing Pollution Prevention 0 <br />Purpose Sawcutting and surfacing operations generate slurry and process water <br />that contains fine particles and high pH (concrete cutting), both of which <br />can violate the water quality standards in the receiving water. Concrete <br />spillage or concrete discharge to surface waters of the State is prohibited. <br />Use this BMP to minimize and eliminate process water and slurry created <br />through sawcutting or surfacing from entering waters of the State. <br />Conditions of Use Utilize these management practices anytime sawcutting or surfacing <br />operations take place. Sawcutting and surfacing operations include, but <br />are not limited to, the following: <br />• Sawing <br />• Coring <br />• Grinding <br />• Roughening <br />• Hydro -demolition <br />• Bridge and road surfacing <br />Design and • Vacuum slurry and cuttings during cutting and surfacing operations. <br />Installation Slurry and cuttings shall not remain on permanent concrete or asphalt • <br />Specifications pavement overnight. <br />• Slurry and cuttings shall not drain to any natural or constructed <br />drainage conveyance including stormwater systems. This may require <br />temporarily blocking catch basins. <br />• Dispose of collected slurry and cuttings in a manner that does not <br />violate ground water or surface water quality standards. <br />• Do not allow process water generated during hydro -demolition, <br />surface roughening or similar operations to drain to any natural or <br />constructed drainage conveyance including stormwater systems. <br />Dispose process water in a manner that does not violate ground water <br />or surface water quality standards. <br />• Handle and dispose cleaning waste material and demolition debris in a <br />manner that does not cause contamination of water. Dispose of <br />sweeping material from a pick-up sweeper at an appropriate disposal <br />site. <br />Maintenance Continually monitor operations to determine whether slurry, cuttings, or <br />Standards process water could enter waters of the state. If inspections show that a <br />violation of water quality standards could occur, stop operations and <br />immediately implement preventive measures such as berms, barriers, <br />secondary containment, and vacuum trucks. <br />Volume II — Construction Stormwater Pollution Prevention - August 2012 <br />4-44 <br />