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The terms used in this chapter shall have the following meanings:

A. “Administrative technical documents” or “ATD” means the following documents adopted by the city. The most current versions of these documents shall be considered in use for purposes of interpreting this chapter.

1. Storm drain map;

2. Waterway management plan;

3. Waterway management plan appendix;

4. Waterway management plan drainage design manual;

5. Waterway management plan stream management and maintenance program;

6. Waterway management plan stream management and maintenance program Appendix A;

7. Waterway management plan environmental impact statement/report for public hearing;

8. Creek and flood protection fee schedule;

9. City engineering standards;

10. City engineering standard specifications;

11. City of San Luis Obispo storm water management plan;

12. Community design guidelines.

B. “Authorized representative” means that person designated in writing to the director by the property owner to act on behalf of the property owner.

C. “Best management practice” or “BMP” means activities, practices, and procedures to prevent or reduce the discharge of pollutants directly or indirectly to the storm drain system and waters of the United States. BMPs include but are not limited to treatment facilities to remove pollutants from storm water; operating and maintenance procedures; facility management practices to control runoff, spillage or leaks of non-storm water, waste disposal, and drainage from materials storage; erosion and sediment control practices; and the prohibition of specific activities, practices, and procedures and such other provisions as the city determines appropriate for the control of pollutants.

D. “City” shall mean the city of San Luis Obispo.

E. “Clean Water Act” means the federal Water Pollution Control Act, 33 USC 1251 et seq., and any subsequent amendments thereto.

F. “Construction activity” means any of the following activities: including but not limited to clearing and grubbing, grading, excavating, demolition and construction.

G. “Director” means the community development director or public works director of the city, acting either directly or through an authorized designee.

H. “Groundwater” means any naturally occurring subsurface water, including springs.

I. “Hazardous material” means any material, including any substance, waste, or combination thereof, which because of its quantity, concentration, or physical, chemical, or infectious characteristics may cause, or significantly contribute to, a substantial present or potential hazard to human health, safety, property, or the environment when improperly treated, stored, transported, disposed of, or otherwise managed, as defined in Section 25501 of the Health and Safety Code.

J. “Illegal discharge” means any direct or indirect non-storm water discharge to the storm drain system, except as exempted by this chapter.

K. “Illicit connection” means any of the following:

1. Any conveyance system, whether on the surface or subsurface, which allows an illegal discharge to enter the storm drain system including, but not limited to, sewage, process wastewater, wash water, pool or spa water.

2. Any connections to the storm drain system from indoor drains and sinks not currently exempted or permitted, regardless of whether the drain or connection has been previously allowed, permitted, or approved by a government agency.

3. Any drain or conveyance connected from any land use to the storm drain system which has not been documented and approved by the city.

4. Any unpermitted connection of a storm water system to the publicly owned treatment works as defined in this chapter.

L. “Industrial activity” means any activity subject to a NPDES industrial permit as defined in 40 CFR Section 122.26(b)(14).

M. “Municipal separate storm sewer system” or “MS4” means the public portion of the storm drain system.

N. “National Pollutant Discharge Elimination System” or “NPDES” means the general, group, and individual storm water discharge permits which regulate facilities defined in federal NPDES regulations pursuant to the Clean Water Act.

O. “Non-storm water discharge” means any discharge to the storm drain system that is not composed entirely of storm water.

P. “Pollutant” means anything which causes or contributes to pollution including, but not limited to, paints, varnishes, and solvents; oil and other automotive fluids; nonhazardous liquid and solid wastes and yard wastes; refuse, rubbish, garbage, litter, or other discarded or abandoned objects, articles, and accumulations, so that same may cause or contribute to pollution; floatables; pesticides, herbicides, and fertilizers; hazardous substances and wastes; sewage, fecal coliform and pathogens; dissolved and particulate metals; animal wastes, either from domestic or wild animals or birds; wastes and residues that result from constructing a building or structure, including but not limited to dirt, sediment, slurry, and concrete residuals; and noxious or offensive matter of any kind.

Q. “Pollution” means the human-made or human-induced alteration of the quality of waters by waste or pollutants, or the presence of a substance in the environment that, because of its chemical composition or quantity, prevents the functioning of natural processes and produces undesirable environmental and health effects or alters the quality of the water to a degree that unreasonably affects the waters for beneficial uses or the facilities which serve these beneficial uses.

R. “Porter-Cologne Act” means the Porter-Cologne Water Quality Control Act (California Water Code Section 13000 et seq.) as amended.

S. “Premises” means any building, lot, parcel of land, or portion of land whether improved or unimproved including adjacent sidewalks and parking strips.

T. “Storm drain system” means any public or private facilities by which storm water is collected and/or conveyed, including but not limited to roads, sidewalks, gutters, curbs, inlets, piped storm drains, pumping facilities, retention and detention basins, natural and human-made or altered drainage channels and swales, reservoirs, lakes, creeks, waters of the United States and other drainage structures which are within the city and are not part of a publicly owned treatment works as defined at 40 CFR Section 122.2.

1. Public facilities are those owned, maintained and operated by the city and other public agencies including the enclosed system of pipelines, catch basins, manholes and junction structures.

2. Private facilities are those on private property or under the control of persons other than the city or other public agencies.

U. “Storm water” means any surface flow, runoff, and drainage consisting entirely of water from any form of natural precipitation, and resulting from such precipitation.

V. “Storm water pollution prevention plan” or “SWPPP” means a plan that identifies sources of pollution and provides direction during construction to the contractor and owner, using BMPs to prevent pollution from occurring.

W. “Waters of the United States” means surface watercourses and water bodies as defined at 40 CFR Section 122.2, including all natural waterways and definite channels and depressions in the earth that may carry water, even though such waterways may only carry water during rains and storms and may not carry storm water at and during all times and seasons. (Ord. 1543 § 2 (part), 2010)