“Categorical industrial user,” as defined and set forth in 40 CFR 404 through 471, means an industrial user subject to federal categorical pretreatment standards.

“Categorical pretreatment standard” or “categorical standard” means any standard or limitation for a pollutant which has been assigned in accordance with Sections 307(b) and (c) of the Act (33 U.S.C. Section 1317) that apply to a specific category of users and that appear in 40 CFR Chapter I, Subchapter N, Parts 405 through 471.

“CFR” means Code of Federal Regulations. Title 40 contains mainly environmental regulations that were promulgated by the U.S. Environmental Protection Agency (EPA), based on the provisions of United States laws (statutes of the U.S. Federal Code).

“City” means the city of Lynnwood.

“COD” (denoting “chemical oxygen demand”) means a measure of the oxygen-consuming capacity of organic or inorganic matter present in water or wastewater expressed in milligrams per liter, for a chemical oxidant in a specific laboratory procedure.

“Commercial and industrial users” means all users other than single-family and multifamily and includes mobile homes in a mobile home park.

“Commercial establishment” means a building or portion thereof used in a trade, business or profession, including a building or portion thereof not included within the meaning of terms “single- and multiple-family dwelling units,” but excluding industrial establishments.

“Compatible pollutants” means biochemical oxygen demand, suspended solids, pH, and fecal coliform bacteria, plus additional pollutants identified in the POTW’s NPDES permit if the POTW treatment plant is designed to treat such pollutants, and in fact does remove such pollutants to a substantial degree. The term “substantial degree” is not subject to precise definition, but generally contemplates removals in the order of 80 percent or greater. Examples of the additional pollutants which may be considered compatible include:

“Composite sample” means a representative flow-proportioned or time-proportioned sample collected during normal hours of business over a period representative of process discharge to the POTW sewer. A composite sample shall be composed of a minimum of eight individual samples.

“Control authority” means the city of Lynnwood public works department. (Ord. 3220 § 1, 2016; Ord. 2742 § 1, 2008; Ord. 2609 § 1, 2006; Ord. 2572 § 3, 2005; Ord. 2070 § 1, 1996; Ord. 1706, 1989)