§ 153.1239 DEVELOPMENT STANDARDS IN RIPARIAN BUFFERS.

   The following standards and criteria shall apply to any portion of a development or, as appropriate, to any land disturbance, within the riparian buffers.

   (A)   No storm water discharge is permitted directly off an impervious surface into a stream channel.

   (B)   Streets and driveways shall be located, as much as practicable, parallel to the flow of waters. Where a street, driveway or utility line necessarily must cross a watercourse, such crossing shall be located and designed to allow convenient access by wildlife through and beyond such crossing, and shall be designed to safely convey flood waters to the same extent as before construction of said crossings.

   (C)   Streets and bridges shall be spaced at an average interval of at least 400 feet within the proposed development, and not closer than 200 feet from streets on contiguous property. This distance shall be measured from the edge of the paved surface.

   (D)   Water supply, sanitary sewer and on-site waste disposal systems shall be designed to:

      (1)   Prevent the infiltration of flood waters into the system;

      (2)   Prevent discharges from the system or systems into flood waters; and

      (3)   Avoid impairment during flooding to minimize flood damage. Finished floor elevations to be served by sanitary sewer shall be at or above the rim elevation of the nearest upstream manhole cover. Sanitary sewer manholes must be provided with locking, water-tight manhole covers, or be elevated to a height sufficient to prevent submersion or infiltration by flood waters. All sewer and sewer outfall lines shall use gravity flow to a point outside the riparian buffers.

      (4)   Promote rain water capture, treatment and storage to promote recycling and reuse of water, including use of vegetated swales, rain gardens, rain barrels and cisterns, and permeable paving techniques.

   (E)   Electrical, heating, ventilation, plumbing, gas, air conditioning and other service/utility facilities shall be designed and/or located in order to prevent water from entering or accumulating within the components during conditions of flooding during the base flood discharge.

Table 153.1239(A): Permitted Uses Within Riparian Buffer Corridor Zones
(A) Use	(B) Stream Side Zone	(C) Managed Use Zone	(D) Upland Zone
Accessory land-disturbing activities ordinarily associated with a single- or two-family dwelling, such as utility service lines, gardens and similar uses	N	P	P
Archery ranges, picnic structures, playground equipment and other similar public and private recreational uses that do not require the use of fertilizers, pesticides or extensive use of fences or walls	N	P	P
Detention/retention basin and associated infrastructure	N	P	P
Gardens, play areas and other similar uses that do not require the use of pesticides for routine maintenance	N	P	P
Lakes, ponds and associated infrastructure, such as dams, spillways, riser pipes and stilling basins, which are located outside of the regulatory floodplain	C	C	C
Lawns, golf course fairways, play fields and other areas that may require the use of fertilizers or pesticides	N	N	P
Outdoor horticulture, forestry, wildlife sanctuary and other similar agricultural and related uses not enumerated elsewhere in this table that do not require land-disturbing activities, or use of pesticides or extensive use of fences or walls	P	P	P
Pastures or plant nurseries that do not require land-disturbing activities or use of pesticides, or extensive use of fences or walls	N	P	P
Public maintenance of streets, bridges, other similar transportation facilities and/or public utility and storm drainage facilities	P	P	P
Public utility and storm drainage facilities where there is a practical necessity to their location within the Resource Conservation District (RCD)	P	P	P
Sidewalks	P	P	P
Stream and riparian area restoration and maintenance	P	P	P
Streets, bridges and other similar transportation facilities where there is a practical necessity to their location within the RCD	C	C	C
Trails, greenways, open space, parks and other similar public recreational uses and private recreational uses that do not require the use of fertilizers, pesticides or extensive use of fences or walls	P	P	P
NOTES TO TABLE: P = the activity is permitted as of right; N = the activity is prohibited; and C = the activity is permitted only upon approval of a conditional use permit or a subdivision application.

 

 

Table 153.1239(B): Dimensional Regulations in Riparian Buffer Zones
(A) Dimensional Requirement	(B) Stream Side Zone	(C) Managed Use Zone	(D) Upland Zone
Disturbed area ratio	0.20	0.40	0.40
Floor area ratio	0.01	0.019	Same as underlying zoning district
Impervious surface ratio (sewered areas)	0.10	0.20	0.20
Impervious surface ratio (unsewered areas)	0.06	0.12	0.12

 

(Ord. 3020, passed 9-10-2013, § 5.40.5)