§ 1014-2.004. Definitions.

As used in this division, the following words and phrases have the following meanings. Words and phrases in this division not otherwise defined shall be interpreted as defined in the regulations issued by the U.S. Environmental Protection Agency to implement the provisions of the Federal Clean Water Act, and as defined by the State Water Resources Control Board to implement the Porter-Cologne Water Quality Control Act:

(a)

"Authorized county employee(s)" means those individuals designated by the director.

(b)

"Best management practices" or "BMPs" include both structural devices and operational practices and procedures. "Structural BMPs" are devices, measures, or stormwater management facilities or activities that help to meet development runoff requirements at the premises. "Operational BMPs" include schedules of activities, prohibitions or practices, general good housekeeping, pollution prevention practices, maintenance procedures, and other management practices that prevent or reduce the discharge of pollutants directly or indirectly to watercourses, water bodies and wetlands.

(c)

"County's NPDES permits" mean the NPDES permits issued jointly to Contra Costa County and other public agencies by the San Francisco Bay Regional Water Quality Control Board and the Central Valley Regional Water Quality Control Board. These permits are Permit Nos. CAS0029912 and CAS0083313 respectively, and any amendments, reissuances or successors to these NPDES permits.

(d)

"Development" as used in this division means on land, in or under water, the placement or erection of any solid material or structure; the discharge or disposal of any dredged material or of any gaseous, liquid, solid or thermal waste; the grading, removing, dredging, mining or extraction of any materials; any change in the density or intensity of use of land, including, but not limited to, a subdivision established pursuant to the Subdivision Map Act (commencing with Section 66410 of the Government Code), and any other division of land; any change in the intensity of use of water, or of access thereto; any construction, reconstruction, demolition, or alteration of the size of any structure, including any facility of any private, public, or municipal utility; and the removal or harvesting of major vegetation other than for agricultural or public agency routine maintenance purposes.

(e)

"Development runoff requirements" means the provisions in the county's NPDES permits that contain performance standards to address both the construction and post-construction phase impacts of new projects and redeveloped projects on stormwater quality. These requirements are in Section C.3 of the county's NPDES permits.

(f)

"Director" means the director of public works or his or her designee.

(g)

"Guidebook" means the most recent version of the Contra Costa Clean Water Program Stormwater C.3. Guidebook.

(h)

"Illicit discharge" means any discharge to the county's stormwater system that is not composed entirely of stormwater, except a discharge in compliance with a NPDES permit.

(i)

"NPDES" means the National Pollutant Discharge Elimination System, established by the Federal Water Pollution Control Act, as amended, also known as the Clean Water Act (33 U.S.C. Section 1251 and following).

(j)

"Pollutant" means any material other than stormwater discharged into the water or stormwater system, including, but not limited to, petroleum products or by-products; solid waste; incinerator residue; sewage; sewage sludge; heat; chemical waste; biological materials; radioactive materials; wrecked or discarded equipment; rock; sand; soil; or industrial, municipal or agricultural waste.

(k)

"Premises" means any building; structure; facility; land or portion of land whether improved or unimproved; or installation, including a building's grounds or other appurtenances; and adjacent sidewalks and parking strips.

(l)

"Responsible person" means the owner or occupant of any premises or any person who engages in any activity from which there is or may be a discharge prohibited by Section 1014-4.006, or any person who releases pollutants to the county's stormwater system.

(m)

"Stormwater" means flow of water on the surface of the ground resulting from precipitation.

(n)

"Stormwater management facility" means any device designed to detain, retain, filter or infiltrate stormwater.

(o)

"Stormwater control plan" means a plan that meets those criteria contained in the most recent version of the Contra Costa Clean Water Program Stormwater C.3. Guidebook.

(p)

"Stormwater control operation and maintenance plan" means a county approved document detailing operation and maintenance requirements for stormwater management facilities incorporated into a project.

(q)

"Stormwater system" means that system of facilities (man-made or natural) by which stormwater may be conveyed, including flood control channels, any roads with drainage systems, city streets, catch basins, curbs, gutters, ditches, improved channels, storm drains, or storm drain system, which are not part of a publicly owned treatment works ("POTW") as that term is defined in 40 CFR Section 122.2.

(Ord. 2005-01 § 2, 96-21 § 3).