A. General provisions. The and shall issue a permit only where adequate provisions for stormwater and water runoff have been made, and:
1. The stormwater drainage system shall be separate and independent of any sanitary sewerage system; and
2. Where possible, inlets shall be provided so surface water is not carried across any intersection or allowed to
any
; and 3. Surface water drainage patterns shall be shown on every
proposal plan.
B.
. Where a watercourse, drainageway, channel or stream traverses a , there shall be provided a stormwater or drainage right-of-way conforming substantially to the lines of such watercourse and such further width as will be adequate for conveyance and maintenance.
C. Accommodation of upstream drainage.
1. A culvert or other drainage facility shall be large enough to accommodate runoff from its entire upstream drainage area, whether inside or outside the
; and
2. The
shall approve the necessary size of the facility, based on the provisions of Design and Construction Standards for Sanitary and Surface Water Management (as adopted and amended by Clean Water Services) and the
’s Master Stormwater Sewer Plan.
D. Effect on downstream drainage. Where it is anticipated by the that the additional runoff resulting from the will overload an existing drainage facility, the and Engineer shall withhold approval of the until provisions have been made for improvement of the potential condition or until provisions have been made for storage of additional runoff caused by the in accordance with the Design and Construction Standards for Sanitary and Surface Water Management (as adopted by Clean Water Services and including any future revisions or ).
(Ord. 2009-01, passed 3-9-2009; Ord. 2013-3, passed 5-22-2013)