AgdaPkt 2005-11-14 - Laserfiche WebLink

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$4 Attachment 1 STORMW A TER AMENDMENTS TO ZONING SUMMARY OF PROPOSED REGULATIONS Existing Regulations Proposed Regulations Definitions Not included Adds definitions of impervious surface, landscape area, lot coverage, permeable pavement, pervious surface, riparian vegetation, runoff, sensitive area, source control measures, stormwater site design measures, stormwater treatment measures, top of bank, vegetated swale, and protected watercourse. Minimum No requirement; only Minimum pervious area prescribed for each Pervious Area limited to site coverage zoning district (Table 1); may be landscaping, (building coverage) open space or penneable surfaces; list of penneable surfaces and permeability ratios to be applied by Engineering; exempts the CB and CBR zoning districts; also exempts service stations, auto repair, or similar uses where infiltration is not desired; applies if increase in impervious area of 5,000 square feet or replacement of more than 50% of existing; allows for credit for park strips used as pervious area for drainage treatment. Pervious Area No requirement; only Minimum of 60% of front yard must be pervious, in Front Yard setback for structures primarily of landscaped materials; minimum of 20 feet pavement width pennitted for lots of 50 feet or less in width. Stormwater No requirements a) Adds Section 32.12, with purpose statement Requirements and reference to Chapter 27 A b) Directs drainage to landscape areas or other filtration prior to discharge from site c) Requires on-site treatment of runoff and approval by Engineering for all development sites d) Provides for alternative treatment methods where infiltration is not feasible or desirable (service stations, etc.) e) Requires creek protection measures (see below)