It is unlawful and an offense for any person, firm or corporation to deposit, drain or divert into or upon any public highway, street or alley, drainage ditch, storm drain, sewer, gutter, paving, creek, river, lake or lagoon, any oil or liquid with petroleum content or any oil substance or any mud, rotary mud, sand, water or salt water, or in any manner to permit by seepage, overflow or otherwise, any of such substances to escape from any property owned, leased or controlled by such person, firm or corporation and to flow or be carried into or upon such public highway, street or alley, drainage ditch, storm drain, sewer, gutter, paving, creek, river, lake or lagoon within the corporate limits of the city, except in such cases where mud or slush is carried in pipelines as provided in section 14.20.090 of this chapter, or in such instances where oil byproducts are used for maintenance of private lease roads. (Ord. 1369 § 6J, 1979)