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RAPID INFILTRATION <br />A component of RAIN INDUCED I/I. It can occur during and/or just after a RAIN <br />EVENT as a result of RL1N-OFF entering the pipe trench and entering the pipe through, <br />typically, infiltration defects but acting in the same manner as does INFLOW. In most <br />cases, without considerable investigation, it is not distinguishable from INFLOW. <br />REHABILITATION <br />The process by which LEAKS and DEFECTS are repaired thus reducing the amount of <br />I/I entering a SANITARY COLLECTION SYSTEM. <br />RUN-OFF <br />That portion of storm water that remains primarily at the ground surface as opposed to <br />penetrating the soil. <br />SANITARY COLLECTION SYSTEM <br />MAINLINE, SERVICE LINES and MANHOLES maintained by a municipality, county, <br />or other agency. <br />SERVICE LINE <br />A service line directs flow from a resident or business to either a MAINLINE or <br />MANHOLE. Municipal service is that portion of the service line located within the <br />MAINLINE right-of-way (or easement). Private service line is located on private <br />property. <br />ADS Environmental Services, Inc. <br />VI-6 <br />