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1102 excavation where it filters into the ground within 24 hours of the rainfall. The rain water 1103 garden is then mulched and planted with a variety of perennials that can tolerate wet and 1104 dry conditions and that are commonly found in household landscapes. General guidelines 110 11,15 and step-by-step instructions for designing and installing household rain water gardens 1106 are readily available, and design assistance and potential funding sources may be 1107 available from local watershed districts and/or Ramsey County; information about these 1108 resources will be provided along with the administrative deviation application. ii og 6.7 Planning Division staff is proposing that deviations of up 120% of the impervious 110 coverage requirements be subject to the same administrative review and approval process 111 as setback encroachments, except that storm water runoff mitigation would be a 11112 requirement for each instance of excess impervious coverage. 11113 6.8 Whether or not the ordinance is amended to include administrative approval of 11114 impervious coverage deviations, Planning Division and Engineering Division staffs will 111115 be recommending that permits (issued by Engineering Division staff be required to 11116 better track the approval of storm water mitigation plans and facilitate regular inspections 11117 where necessary to ensure that storm water runoff continues to be adequately controlled; 11118 these permits would also be required for variance approvals that involve excess 11119 impervious coverage. Such a permit would have to be issued prior to the issuance of a 1120 building or driveway permit, and the final driveway or building inspection could be 11211 passed only when the storm water mitigation measures have been inspected and approved 1122 by Engineering Division staff. Information about these requirements would also be 1123 provided in the materials that accompany the Administrative Deviation application. 1124 7.0 REVIEW OF THE PROPOSED TEXT AMENDMENT 112 1`5 The proposed ZONING ORDINANCE TEXT AMENDMENT (.Attachment B) is presented in the 1126 typical format whrltins arhand insertions are in wn in te�Z%T 1127 boldface, and because of this the entire ordinance appears to have been changed. The 1128 reality is that the new language for excess impervious coverage has been included but 1129 that much of the text pertaining to setback encroachments has simply been reorganized 1130 and further edited for clarity; very few substantive changes are being proposed. The 11311 paragraphs below briefly discuss the rationale and intent of these more significant 1132 changes in basically the same order as they appear in the proposed TEXT AMENDMENT. 1133 7.1 First, and most obviously, the name of the process would change from "Setback Permit" 1134 to the more general "Administrative Deviation". This is partly intended to eliminate 1131") confusion of setback deviations with building permits (which is common), and partly to d-A 1 1136 include impervious coverage deviations in the same section of the City uoae. 1137 7.2 Setback Permits were intended to facilitate improvements to older homes, but this 1138 couldn't be enforced because it was never addressed in the ordinance. Planning Division 1139 staff is recommending that setback deviations for principal structures be limited to homes 1140 that are at least 20 years old at the time of application. 11411 7.3 Permanent structures have never knowingly been permitted in public easements, but the 1142 proposed ordinance would formalize this restriction for applicants and staff. 1143 7.4 Reduced driveway setbacks from public rights-of-way present potential public safety 1144 concerns, and staff believes that these should not be reduced without a formal variance. 19ROJ0015_RCA_072808 F"age 4 of 6