In addition to the definitions provided in Section 119 of Article 4.1 of this Code, the following definitions shall apply:
Combined Sewer System.
All facilities under the jurisdiction of the Department designed and operated to collect, transport, treat, and dispose of stormwater runoff, domestic sewage, and industrial wastewater combined in the same collection, storage, transport, treatment, and disposal facilities.
Department.
The Public Utilities Commission. With regard to stormwater management in areas of the City under the jurisdiction of the Port Commission, "Department" also means the Port Commission until the Port Commission adopts its own standards and procedures.
General Manager.
The General Manager of the Public Utilities Commission of the City, or a designated representative of the General Manager. With regard to post-construction stormwater management in areas of the City under the jurisdiction of the Port Commission, the Executive Director of the Port Commission or a designated representative of the Executive Director shall have the same authority under this Article 4.2 as the General Manager until the Port Commission adopts its own standards and procedures regarding post-construction stormwater management in all areas under Port Commission jurisdiction.
Green Infrastructure.
Post-Construction Stormwater Controls that mimic pre-development drainage patterns and hydrologic processes by increasing retention, detention, infiltration, and treatment of stormwater at its source.
Large Development Project.
Any construction activity that will result in the creation and/or replacement of 5,000 square feet or more of impervious surface, measured cumulatively, that is located on a property that discharges or will discharge Stormwater to the City's Separate or Combined Sewer System. Activities that create or replace impervious surface include, but are not limited to, the construction, modification, conversion, or alteration of any building or structure and the creation or replacement of outdoor impervious surfaces such as parking areas, driveways, private street areas, or new public rights-of way to be dedicated to and accepted by the City within Large Development Projects that are subject to the Subdivision Code. Activities that create or replace impervious surface do not include interior remodeling projects, replacement of existing sidewalks and streets dedicated to and accepted by the City, routine maintenance or repair activities such as pavement resurfacing within the existing footprint, exterior wall surface replacement, and re-roofing. In areas that connect to the Separate Sewer System, Large Development Projects also include discrete linear utility and road projects that result in 5,000 square feet or more of newly constructed contiguous impervious surface including, but not limited to, the construction of new streets or the widening of existing streets with additional traffic lanes.
Non-Stormwater Discharge.
Any discharge to the City's Separate or Combined Systems that is not composed entirely of Stormwater.
Pollutant.
Any substance listed in Section 119 of Article 4.1 of the Public Works Code and any substance described as a pollutant in the Stormwater Management Requirements and Guidelines.
Post-Construction Stormwater Control.
A technology designed to reduce pollution in stormwater runoff or reduce runoff rate or volume, through infiltration, retention, non-potable reuse, detention, direct plant uptake, or filtration. Post-Construction Stormwater Controls may include Green Infrastructure technologies, but do not include Construction Site Best Management Practices outlined in Section 146.1 of this Code.
Separate Sewer System.
Facilities under the jurisdiction of the Department that collect, convey and discharge Stormwater, without combining Stormwater and sewage in the same facilities.
Small Development Project.
Any development activity that will result in the creation or replacement of between 2,500 and 5,000 square feet of impervious surface, measured cumulatively, which is located on a property that is connected or proposing to connect to the Separate Sewer System. Activities that create or replace impervious surface include, but are not limited to, the construction, modification, conversion, or alteration of any building or structure and the creation or replacement of outdoor impervious surfaces such as parking areas, driveways, private street areas, or new public rights-of-way to be dedicated to and accepted by the City within Small Development Projects that are subject to the Subdivision Code. Activities that create or replace impervious surface do not include: interior remodeling projects; replacement of existing sidewalks and streets dedicated to and accepted by the City; routine maintenance or repair activities, such as pavement resurfacing within the existing footprint, exterior wall surface replacement, and re-roofing.
Stormwater.
Runoff that is generated when precipitation from rain events flows over land or impervious surfaces and does not percolate into the ground.
Stormwater Control Plan.
A plan submitted by a Large Development Project proponent to the Department for review and approval that meets all applicable criteria, performance standards and other stormwater management requirements contained in this Article and the Stormwater Management Requirements and Guidelines.
Stormwater Management Requirements and Design Guidelines.
The Stormwater Management Requirements and Design Guidelines adopted by the Department. The Stormwater Management Requirements and Design Guidelines contain requirements pertaining to the type, design, performance, sizing, and maintenance of Post-Construction Stormwater Controls.
(Added by Ord. 83-10, File No. 100102, 4/22/2010; amended by Ord. 64-16
, File No. 160155, App. 4/27/2016, Eff. 5/27/2016)