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Disadvantages: <br /> • Lack of uniformity in individual designs themselves <br /> • May not know for many years, until it's needed, that the system doesn't work <br /> • No incentive over the long term for installing quality and quantity controls <br /> • Severe potential for lower quality design on major improvements focus on profit may short - <br /> circuit the process <br /> • A few years down the road facilities may be abandoned and no monitoring maintenance, <br /> enforcement (is possible) <br /> • Ability to respond quickly and adequately lost - home owner association needs mtg. <br /> • In the long run the system as a whole might become unpredictable and lead to disaster <br /> • Difficult to design a system for development midstream - don't know what may happen <br /> upstream <br /> • Failed systems causing downstream flooding may lead FEMA to try to establish liability, <br /> which is unclear <br /> • Approve BMP's city will have to decide on "approved BMPs ", and design criteria and <br /> performance estimates for BMPs - we don't know how much control is really needed <br /> (accurately) and how well BMPs really work - lots of uncertainty, therefore deciding on and <br /> defending standards is difficult <br /> MULTIPLE OBJECTIVES/NATURAL RESOURCES /AESTHETICS /OPEN SPACE <br /> Management Guideline - Planning decisions should promote and encourage on -site <br /> implementation solutions that meet multiple objectives, such as protection of natural resources, <br /> provision of open space areas, and designs that are compatible within the context of their <br /> location. <br /> Advantages: <br /> • Can help accomplish the adopted goals /plans, e.g. trip, open space <br /> • Possibility of creating more open space on private land <br /> • Groundwater recharge is more efficient on a dispersed basis <br /> • Allow re- examination of existing facilities, e.g. open channels, for potential enhancement <br /> • Would change the scale of necessary controls, resulting in a more positive visual impact <br /> • Preserves more on -site vegetation, e.g. riparian <br /> — <br /> pisadvanfage : r <br /> • Creates a potential for poor designs <br /> • May make it more difficult to meet urban density goals <br /> • Potentially to negatively existing natural resources on -site; elevates stormwater function <br /> above other functions <br /> • Inefficient way to utilize land <br /> A -5 <br />