National Categorical Pretreatment Standard. See “Categorical pretreatment standard.”

“Natural outlet” means any outlet into a watercourse, pond, ditch, or other body of water.

“New source,” as defined and set forth in 40 CFR 403.3(m)(1).

“Noncontact cooling water” means the water discharged from any use such as air conditioning, cooling, refrigeration or any thermal heat exchange process to which the only pollutant added is heat.

“Nonsignificant industrial user” means a categorical industrial user that is eligible for designation as a nonsignificant categorical industrial user that meets all the criteria in 40 CFR Part 403.3(v)(2). An industrial user never discharges more than 100 gallons per day (gpd) of total categorical wastewater (excluding sanitary, noncontact cooling and boiler blowdown wastewater, unless specifically included in the pretreatment standard) and other conditions as set forth in 40 CFR Part 403.3(v)(2).

“NPDES permit” (denoting National Pollution Discharge Elimination System permit) means a permit issued pursuant to Section 402 of the Clean Water Act. (Ord. 3220 § 1, 2016; Ord. 2742 § 1, 2008; Ord. 1831 § 2, 1991)