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ORDINANCE NO. 87- 19 D. Enclosed components of the storm water management system should be minimized. This will aid in managing storm water, not simply disposing of it. Mechanical pumping should 1536¢ be discouraged. appropriate system design, including erosion prevention and control features. F. A drainage system should not result in the degradation of water quality or have significant environmental G. Systems should be designed to accomplish retention or comparable run-off treatment capable of providing adequate protection from flooding caused by rains during storm intensities that can be expected to occur at least once in 25 years. H. Utilize retention/detention structures in order to control runoff waters. Retention Areas - Providing for on site water storage. y(jt4ott 444 $14044 to Of Littoral vegetation is encouraged in order to assimilate impurities. Detention Areas - Provide for temporary storage and discharge to receiving waters through a control structure. In order to assimilate impurities, detention time should not be unduly prolonged. Regulations providing for drainage requirements must be consistent. Maintenance of drainage systems must be continuous to ensure that such systems function properly. I. Nonstructural drainage provisions should be encouraged over structural provisions where practicable. CODING: Words in`1�15¢l�f type are deletions from existing law. Words underlined are additions. be minimized through E. Erosion from storm water should appropriate system design, including erosion prevention and control features. F. A drainage system should not result in the degradation of water quality or have significant environmental G. Systems should be designed to accomplish retention or comparable run-off treatment capable of providing adequate protection from flooding caused by rains during storm intensities that can be expected to occur at least once in 25 years. H. Utilize retention/detention structures in order to control runoff waters. Retention Areas - Providing for on site water storage. y(jt4ott 444 $14044 to Of Littoral vegetation is encouraged in order to assimilate impurities. Detention Areas - Provide for temporary storage and discharge to receiving waters through a control structure. In order to assimilate impurities, detention time should not be unduly prolonged. Regulations providing for drainage requirements must be consistent. Maintenance of drainage systems must be continuous to ensure that such systems function properly. I. Nonstructural drainage provisions should be encouraged over structural provisions where practicable. CODING: Words in`1�15¢l�f type are deletions from existing law. Words underlined are additions.