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(a) The Erosion and Sediment Control Plan shall include a vicinity map showing the location of the site in relationship to the surrounding area's water courses, water bodies, and other significant geographic features; a site survey; suitable contours for the existing and proposed topography, area drainage, proposed construction and sequencing, proposed drainage channels; proposed erosion and sediment controls; dewatering controls where applicable; soil stabilization measures where applicable; maintenance controls; sampling, monitoring, and reporting schedules; and any other information deemed necessary by the General Manager.
(b) Any Person performing Land-disturbing Activities at sites greater than or equal to one acre within a separate sewer system area may submit to the General Manager the Storm Water Pollution Prevention Plan (SWPPP) used to comply with the State of California's General Permit for Discharges of Storm Water Associated with Construction Activity in lieu of an Erosion and Sediment Control Plan.
(a) Daily Maintenance. The Permittee shall daily inspect, maintain, and repair all graded surfaces and erosion and sediment controls, drainage structures, and other protective devices, plantings, and ground cover installed while construction is active.
(b) Reporting. Every person who operates any erosion and sediment control or controls must provide inspection and maintenance information as set forth in the Construction Site Runoff Control Permit, and certify under penalty of perjury that such information is accurate and true.
(c) Inspections. Permittees shall permit the General Manager to perform inspections as may be deemed necessary in the General Manager's sole discretion to carry out the intent of this Article.
(d) Milestone Notification. The Permittee shall notify the General Manager at least two working days before the following milestones occur:
(1) Start of construction.
(2) Erosion and sediment control measures are completely installed and stabilized.
(3) Final grading has been completed.
(4) Project completion.
(e) Authority to Sample and Establish Sampling Devices. Permittees shall provide devices or locations necessary to conduct sampling or metering operations, if requested by the General Manager.
(f) Requirement to Test or Monitor. Permittees shall undertake such monitoring activities or analysis and furnish such reports as the General Manager may specify, if requested by the General Manager.
(g) Notification of Spills. All Persons responsible for implementing BMPs shall provide immediate notification to the General Manager of any suspected, confirmed or unconfirmed release of Pollutants that creates a risk of non-stormwater discharge into any of the City's sewer systems. Such persons shall take all necessary steps to ensure the detection and containment and cleanup of such release.
(h) Public Right-of-Ways. The Permittee shall be responsible for the prompt removal of, and the correction of damage resulting from any soil, miscellaneous debris or other materials washed, spilled, tracked dumped or otherwise deposited on public streets, highways, sidewalks or other public thoroughfare, incident to the construction activity, or during transit to and from the construction site.
Persons violating any provision of the Construction Site Runoff Control Permit or Sections 146-146.11 of this Article or applicable laws or regulations are subject to enforcement by the General Manager pursuant to Section 132 of Article 4.1 of this Code. Persons violating Sections 146-146.11 of Article 4.2
or applicable laws or regulations are subject to penalties and abatement in accordance with Sections 133 and 134 of Article 4.1 of this Code, and any other remedies allowed by law.
For construction projects in areas of the City under the jurisdiction of the Port Commission, the Port’s Executive Director or his or her designee shall have enforcement authority identical to the enforcement authority referenced in the two preceding sentences.
If any section, subsection, subdivision, paragraph, sentence, clause, or phrase is for any reason held to be unconstitutional, invalid or ineffective by any court of competent jurisdiction, such decision shall not affect the validity or effectiveness of the remaining portions of this Article. The Board of Supervisors declares that it would have passed each section, subsection, subdivision, paragraph, sentence, clause, or phrase irrespective of the fact that any one or more sections, subsections, subdivisions, paragraphs, sentences, clauses, or phrases could be declared unconstitutional, invalid or ineffective.
(a) The intent of Sections 147-147.6 of this Code is to reduce the volume of stormwater entering the City's Combined and Separate Sewer Systems and to protect and enhance the water quality of receiving waters, pursuant to, and consistent with Federal and State laws, lawful standards and orders applicable to stormwater and urban runoff control, and the City's authority to manage and operate its drainage systems.
(b) Urban runoff is a significant cause of pollution throughout California. Pollutants of concern found in urban runoff include sediments, non-sediment solids, nutrients, pathogens, bacteria, oxygen-demanding substances, petroleum hydrocarbons, heavy metals, floatables, polycyclic aromatic hydrocarbons (PAHs), trash, and pesticides and herbicides.
(c) During urban development, two important changes occur. First, where no urban development has previously occurred, natural vegetated pervious ground cover is converted to impervious surfaces such as paved highways, streets, rooftops, and parking lots. Natural vegetated soil can both absorb rainwater and remove pollutants, providing a very effective purification process. Because pavement and concrete can neither absorb water nor remove pollutants, the natural retention and purification characteristics of the land are lost, increasing the volume of stormwater entering the collection system and the concentration of pollutants within that water. Second, urban development creates new pollutant sources, including vehicle emissions, vehicle maintenance wastes, pesticides, household hazardous wastes, pet wastes, trash, and other contaminants that can be washed into the City's Separate or Combined Sewer Systems.
(d) A high percentage of impervious area correlates to a higher rate of stormwater runoff, which generates greater pollutant loadings to the City's Separate and Combined Sewer Systems, resulting in turbid water, nutrient enrichment, bacterial contamination, toxic compounds, temperature increases, and increases of trash or debris.
(e) When stormwater impacts are considered during the planning stages of a project, new development and redevelopment projects can more efficiently incorporate Post-Construction Stormwater Controls that will enhance the function and capacity of the City's Separate and Combined Sewer Systems by providing pretreatment of stormwater and protecting water quality.
(1) reducing stormwater runoff rates and volume whenever possible through Post-Construction Stormwater Controls, and ensuring that these stormwater controls are safe and properly maintained;
(2) minimizing increases in pollution caused by stormwater runoff from development that would otherwise degrade local water quality; and
(3) controlling the discharge of contaminants to the City's sewer and drainage systems through spills, dumping, or disposal.
(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)
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)
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