|
free of limiting factors must be provided for a replacement
<br /> standard soil treatment system for each sewage system.
<br /> (2) Conservation subdivisions shall be connected to publicly
<br /> owned water supply and sewer systems, if available. Where
<br /> publicly owned water supply and sewer systems are not
<br /> available, conservation subdivisions shall either establish
<br /> dedicated areas for individual sewage treatment systems or
<br /> establish centralized water supply and sewage treatment
<br /> systems to serve the entire subdivision.
<br /> (i Residential x.1.,....,,,,1 unit ,1,,,,elop„,.,„+„ must be eeiineete
<br /> to ..,,blie1., a ,,,1 water ter ply and when sewer-
<br /> available.
<br /> (2) 011 site water supply and se-,�ge ,1ill'lll J,'JllilllJ 11111J1
<br /> eVU
<br /> (3) On sewage treatment-systems-must be 1,.,,.,+,.,] in a
<br /> suitable area ef the , area
<br /> soil treatment system F eaeh system.
<br /> F. Erosion control and Stormwater Management. Erosion control
<br /> and stormwater management for developments must meet the
<br /> standards in Section 17-8.2(3)(F). For planned unit
<br /> developments, the impervious surface coverage shall not exceed 15
<br /> percent in either the total project area or the first tier. For
<br /> conservation subdivisions, the impervious surface coverage for
<br /> lots must meet the standards in 17-8.2(3)(F). Erosion control and
<br /> stormwater management shall be designed by certified personnel
<br /> in erosion and sediment control using the best management
<br /> practices found in the latest Pollution Control Agency's
<br /> stormwater best management practices manual, approved by the
<br /> local government, and effectively implemented.
<br /> (1) For post construction stormwater management, when
<br /> possible, existing natural drainage ways, wetlands, and
<br /> vegetated soil surfaces must be used to convey, store, filter,
<br /> and retain stormwater runoff before discharge to public
<br /> waters. When development density, topographic features,
<br /> and soil and vegetation conditions are not sufficient to
<br /> adequately handle stormwater runoff using natural
<br /> features and vegetation, various types of constructed
<br /> facilities such as diversions, settling basins, skimming
<br /> devices, dikes, waterways, and ponds may be used.
<br /> Preference must be given to designs using surface
<br /> drainage, vegetated filter strips, bioretention areas,
<br /> rainwater gardens, enhanced swales, off-line retention
<br />
|