Ordinances-1988-152

event less than the elevation calculated at 1/4-inch per foot rise from said edge of the building. Site grading shall be sloped away from the building at least 1 percent toward the lower points of the grading. SECTION 5. Application to Existing Properties. All private property owners shall operate and maintain ditches, culverts, and water courses which are adjacent to their property in the public right-of-way according to the standards set for herein' for building sites. This will not include any culvert passing under a city street. SECTION 6. Connection Storm Drainage to Sanitary Sewers. No roof, footing drain or storm water drain, or drainage tile shall be connected with the sanitary sewer system. Storm water conducted from roofs or other impervious areas shall be dispersed entirely upon the grounds of the owner of the contributing property, or it shall be drained or conducted into ditches, storm drains, or gutters where available on public property or easements legally useable for that purpose, or into public streams. No building sewer or roof or footing drain outlets shall be covered or backfilled until the city's inspector has viewed the completed work. Where outletting of footing drains is not physically possible (as required above) the applicant may apply for a variation permitting such connection provided that footing drains shall outlet inside the wall of the building into a suitable sump. The sump pump outlet shall not connect directly to the sanitary sewer but have an adequate air gap and discharge into a trapped inlet to the building sewer. Such variations shall be granted only by council resolution. SECTION 7. Roof Drains. It shall be unlawful to discharge a roof drain, downspout, or leader into any sanitary sewer within the city. The owner of the building so connected as to permit such discharge shall disconnect or otherwise prevent such discharge upon order of the authorized city officer. No person shall connect a roof drain to a sanitary sewer. SECTION 8. Roof Drains Previously Discharging into Sewer. Any roof drain or other storm water or footing