13.28.115 Source control best management practices.
A. Source Control BMP Requirements. Source control requirements are contained in the stormwater pollution prevention manual, which is also identified as Volume IV of the adopted 2019 Ecology Stormwater Management Manual for Western Washington.
B. BMP Requirements.
1. The SPP manual provides information on source control pollution prevention best management practices (BMPs) for commercial, industrial, multifamily residential, single-family residential, and public sites that shall be implemented in accordance with this chapter to reduce the contamination of stormwater, surface water, and groundwater.
2. All proposals for new development and redevelopment shall include source control pollution prevention BMPs as required by the stormwater design manual and the SPP manual.
3. In applying the SPP manual to prohibited discharges from normal single-family residential activities, the Director shall use public education and technical assistance as the primary method of gaining compliance with this chapter. Enforcement action will be used if the Director determines:
a. The discharge from a normal single-family residential activity, whether singly or in combination with other discharges, is causing a significant contribution of contaminants to surface and stormwater or groundwater; or
b. The discharge from a normal single-family residential activity poses a hazard to the public health, safety or welfare, endangers any property or adversely affects the safety and operation of City right-of-way, utilities, or other City-owned or maintained property.
4. In applying the source control BMPs to prohibited discharges from existing commercial, industrial, multifamily and public sites, the City may require the application of operational or structural source control BMPs at any time through formal code enforcement for pollutant generating sources associated with existing land uses and activities where necessary to prevent illicit discharges. Failure to comply shall result in enforcement action in accordance with Chapter 8.45 IMC.
C. Exemptions.
1. Persons implementing BMPs through another approved Federal, State, or local program will not be required to implement the BMPs prescribed in the SPP Manual, unless the Director determines that the other program’s BMPs are ineffective at minimizing the discharge of contaminants. If the other program requires the development of a stormwater pollution prevention plan, the person shall make their plan available to the City upon request. Persons who qualify for exemptions include, but are not limited to, persons who:
a. Have obtained and are complying with a general or individual permit under the NPDES stormwater permit program from the Washington State Department of Ecology;
b. Are a public facility implementing BMPs in compliance with the stormwater management program of an NPDES municipal stormwater permit;
c. Are voluntarily implementing other BMPs, which are equivalent measures, methods, or practices to the BMPs in the SPP manual. (Ord. 2989 § 1 (Exh. A1), 2022; Ord. 2783 § 2 (Exh. A2), 2016; Ord. 2560 § 2 (Exh. A1), 2009; Ord. 2288 § 2, 2000).