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<br />polluting material that is picked up by runoff as it flows over urban surfaces. So called <br />"'alternative" runoff management practices merely seek to mimic the way precipitation would <br />behave without human intervention; that is, it attempts to soak water into the ground as if the <br />land's surface did not have impervious surfaces. In this respect, the practices are an alternative <br />to the collect and concentrate approaches from the past. <br /> <br />The environmental benefits of this approach include reduced wetland and open space impact, <br />potential regulatory credits (suitable for NPDES Phase II and watershed/local stormwater <br />planning), reduced runoff and erosion, closer to natural water infiltration/recharge, reduced <br />negative upland habitat impact (ex. trees), enhanced public awareness, and the opportunity for <br />retrofitting into existing developed areas. The benefits of infiltration practices become even <br />more pronounced as the District moves forward with the setting and implementation of TMDL <br />standards for impaired waterbodies. <br /> <br />Figure 2. TMDL Listed Waterbodies within RCWD <br /> <br />.. TMDL Listed Lakes <br /> <br />Other Lakes <br /> <br />""'- TMDL Listed Waterways <br /> <br /> <br />,.- <br /> <br />Other Waterways <br /> <br />I <br /> <br />- <br />1 <br /> <br />... .. <br /> <br />"~-IJn" <br /> <br />I <br />I <br />~. . <br /> <br />~" <br />~~I <br /> <br />~..., . <br /> <br />::,-, <br /> <br />e <br /> <br />1. , <br /> <br />-t~. <br /> <br />Emmons & Olivier Resources, Inc. <br /> <br />Page 2 0 f 8 <br />