(A) Every application for a development project, including but not limited to a rezoning, tentative map, parcel map, conditional use permit, variance, site development permit, design review, or building permit that is subject to the development runoff requirements in the city’s NPDES permit shall be accompanied by a stormwater control plan that meets the criteria in the most recent version of the Contra Costa Clean Water Program Stormwater C.3. Guidebook.
(1) Effective February 15, 2005, this requirement shall apply to:
(a) All developments that create one acre (43,560 square feet) or more of impervious surface. Excluded from this category is the construction of one single family home, which is not part of a larger plan of development, with appropriate pollutant source control and site design measures, and using landscaping to appropriately treat runoff from roof and house-associated impervious surfaces.
(b) Street and road projects that create one acre (43,560 square feet) or more of new impervious surface. Excluded from this category are sidewalks, bicycle lanes, trails, bridge accessories, guardrails, and landscape features.
(c) Projects on previously developed sites that result in the addition or replacement of a combined total of one acre (43,560 square feet) or more of impervious surface. Excluded from this category are interior remodels and routine maintenance or repair. Excluded routine maintenance and repair includes roof or exterior surface replacement, pavement resurfacing, repaving and road pavement structural section rehabilitation within the existing footprint, and any other reconstruction work within a public street or road right-of-way where both sides of that right-of-way are developed.
(2) Effective August 15, 2006, this requirement shall apply to:
(a) All developments that create 10,000 square feet or more of impervious surface. Excluded from this category is the construction of one single family home, which is not part of a larger plan of development, with appropriate pollutant source control and site design measures, and using landscaping to appropriately treat runoff from roof and house-associated impervious surfaces.
(b) Streets and road projects that create 10,000 square feet or more of new impervious surface. Excluded from this category are sidewalks, bicycle lanes, trails, bridge accessories, guardrails, and landscape features.
(c) Projects on previously developed sites that result in the addition or replacement of a combined total of 10,000 square feet or more of impervious surface. Excluded from this category are interior remodels and routine maintenance or repair. Excluded routine maintenance and repair includes roof or exterior surface replacement, pavement resurfacing, repaving and road pavement structural section rehabilitation within the existing footprint, and any other reconstruction work within a public street or road right-of-way where both sides of that right-of- way are developed.
(3) Divisions (A)(1) and (2) of this section shall be interpreted in a manner that is consistent with the development runoff requirements and exclusions in the city’s NPDES permit.
(B) Implementation of an approved stormwater control plan and submittal of an approved stormwater control operation and maintenance plan by the applicant shall be a condition precedent to the issuance of a certificate of occupancy for a project subject to this section.
(C) All stormwater management facilities shall be designed in a manner to minimize the need for maintenance and reduce the chances of failure. Design guidelines are outlined in the guidebook.
(D) All stormwater management facilities shall be maintained according to the guidebook and the approved stormwater control operation and maintenance plan. The person(s) or organization(s) responsible for maintenance shall be designated in the plan. Unless a different time period is provided for in the plan, those responsible for maintenance shall inspect the stormwater management facility at least annually. The plan shall also describe how the maintenance costs will be funded. Upon the failure of a responsible person to maintain a stormwater management facility in accordance with this chapter or the plan, the city may perform the maintenance and recover its costs from the responsible person as provided in §§ 6-9.17 and 6-9.18.
(E) For access to stormwater management facilities for inspections and maintenance, recorded covenants or easements shall be provided by the property owner for access by the city, the Contra Costa Mosquito and Vector Control District, and the Regional Water Quality Control Board.
(Ord. 1035-C-S, passed 9-12-04)