17.66.160 Drainage.
All proposed drainage facilities shall respect the natural terrain, preserve existing major drainage channels in their natural state or enhance them to create riparian type systems that provide for drainage and for diversification of plant and animal life and be designed in such a manner as to minimize soil erosion and to otherwise preserve the public health, safety and welfare. The following standards shall apply to all lands subject to this chapter in addition to the requirements of Title 16, Subdivision.
A. The overall drainage system shall be completed and made operational at the earliest possible time during construction in accordance with the approved drainage concept report.
B. When deemed necessary by the city engineer, the applicant shall enter into a grading improvement agreement, securing each phase of grading and drainage facility construction. Such security shall be sufficient to install the required drainage facility, to restore the grading area to a safe and stable condition, and to revegetate the cut or fill slopes or provide other permanent erosion control measures.
C. Other than for street gutters, all drainage shall be conveyed within closed conduits unless otherwise approved by the city engineer. Analysis and design of erosion control measures shall be approved by the city engineer. (Ord. 4391 § 1 (Exh. A), 2006)