San Antonio |
Code of Ordinances |
Chapter 34. WATER AND SEWERS |
Article VI. WATER QUALITY CONTROL AND POLLUTION PREVENTION |
Division 5. PROHIBITED DISCHARGES INTO THE MUNICIPAL SEPARATE STORM SEWER SYSTEM |
SubDivision B. Stormwater Compliance for Construction Activity |
§ 34-802. Definitions.
When used in this subdivision B, the following terms shall have the following meanings:
Best management practices (BMP): A technique or series of structural and non-structural techniques and practices which, when used in an erosion control plan or considered as part of a construction site's housekeeping efforts, are proven to be effective in controlling construction-related runoff, erosion, sedimentation, and associated pollutants. Applicable BMP's can be found in TCEQ approved BMP Guidance manuals.
Construction activity: Clearing, grading or filling of land, dozing or mechanical removal of trees which dozing or mechanical removal disturbs the soil, excavation for installation of utility lines, streets, drainage facilities, and site preparation for housing and commercial development, as well as on-going construction activities which produce waste products. Land being modified by either excavation or fill of material upon an existing mantle of soils is considered a construction activity and subject to the terms of this Ordinance unless otherwise permitted under a Multi-sector Industrial Storm Water Permit. Prior to any modification to an existing mantle soil grade the owner of the property must meet City requirements for grading and drainage applicable to property modifications.
Director of public works: The director of public works of the City of San Antonio, including his/her designees.
EPA: The United States Environmental Protection Agency.
Erosion: The wearing away of the ground surface as a result of the movement of wind, water and/or ice.
Extraterritorial jurisdiction (ETJ): The un-incorporated area contiguous to corporate boundaries of the city that is located within five (5) miles of those boundaries, defined by the Texas Local Government Code and as such Code may be amended. Applicable limits of the ETJ, for enforcement purposes of this subdivision, are only those areas within the first five thousand (5,000) feet of San Antonio's corporate boundaries within the ETJ.
Final inspection: Occurs after responsible party meets definition of final stabilization and files a Notice of Termination (NOT) form, if required by state or federal law, at which time SAWS will conduct a final inspection to verify both compliance with final stabilization and removal of the temporary BMP's from the site has occurred. Final inspections will be required at both small construction sites and large construction Sites. Secondary operators are required to complete site notices and complete a NOT form as required under the TPDES permit.
Final stabilization: Reference to standards in the TCEQ TPDES general permit for storm water discharges for construction activities concerning development acreage that:
(1)
Where state or federally regulated development acreage is concerned, all soil disturbing activities at the site have been completed, and a uniform perennial vegetative cover, with a density of seventy (70) percent of the native background vegetative cover for the area has been established on all unpaved areas and areas not covered by permanent structures or equivalent permanent stabilization measures have been employed and
(2)
Where local, individual lots associated with residential or commercial construction are concerned, by either (a) the responsible party complying with cover requirements guided by federal or state standards recited above, or (b) the responsible party establishing temporary stabilization including perimeter controls and informing the home buyer or commercial purchaser in writing of the need for and benefits of final stabilization.
Grade: The vertical location of the ground surface.
Grading: Any land disturbance or land fill, or combination thereof including land development, fill material sites or demolition sites.
Improved: Altered by man-made conditions.
Land disturbance/land-disturbing activities: Any moving or-removing or filling by manual or mechanical means of the soil mantle or top six (6) inches of soil, whichever is shallower, including but not limited to excavations. Any planned disturbance of an existing land grade (fill or excavation) is considered a land disturbing activity. Prior to any modifications to existing mantle soil grade, the owner of the property must meet City requirements for grading and drainage on property modifications.
Land fill: Any human activity involving the disposition of soil, earth, or other earthen or aggregate materials.
Municipal separate storm sewer system (MS4): All natural and man-made collection and conduit facilities within the corporate limits of the city and within applicable limits of its extraterritorial jurisdiction, and for which MS4 protection the City of San Antonio has been issued a Texas Pollutant Discharge Elimination System (TPDES) Permit by TCEQ, which collection and conduit facilities constitute a system of conveyances, including but not limited to, roads with drainage systems, municipal streets, catch basins, curbs, gutters, ditches, creeks, streams, tributaries, man-made channels, or storm drains, which provide collection or conveyance of storm water, rain water, flood water, or other surface water, and may be located on public property, drainage easements, or other property, and are not designated and intended to be part of the collection system of a sanitary sewer system utilized by a publicly owned treatment works (POTW) as defined by federal regulation at 40 CFR 122.2.
NOI: Notice of intent filed by a responsible party with EPA or TCEQ. This NOI is required under state regulation for certain construction activity. The NOI is part of the state general permit process for construction activity concerning projects or runoff deemed to potentially impact waters of the State of Texas and of the United States of America.
NOT: Notice of termination. The notice required by the EPA or TCEQ for permitted projects within the jurisdiction of either agency, which notice verifies "final stabilization" of the site has been achieved, as described above; EPA form 3510-7 terminating coverage under the TPDES general permit or corresponding TCEQ form for the TPDES Texas Pollutant Discharge Elimination System general permit.
NPDES: National Pollutant Discharge Elimination System.
Ordinance: This ordinance in its entirety, pertaining to new subdivision B, under article VI, Division 5, chapter 34, Code of Ordinances of the City of San Antonio.
Person: Any individual, partnership, co-partnership, firm, company, corporation, association, joint stock company, trust, estate, governmental entity, or any other legal entity, or the legal representatives, agents, or assigns thereof.
Pollutant: Any substance introduced into the environment that adversely affects a resource. Pollutant includes, but is not limited to, soil, soil material, sediment, human waste, other wastes and debris generated at construction sites.
Responsible party: Any person or legal entity, individual or corporate, including an owner, operator, contractor, or subcontractor, any or all of whom may be engaged in, consent to, or actually perform a construction project or construction activity.
SAWS: The San Antonio Water System, a municipally owned utility, a co-permittee to the city's MS4 Permit and one of the city's enforcement and compliance arms for water quality, pollution control and prevention.
Sediment: Earth material deposited by water or wind.
Site: The location of construction activity, subject of this subdivision B, being within the corporate limits of the city and within the first five thousand (5,000) feet, outside such limits, within the ETJ.
Soil and/or soil material: Naturally occurring superficial deposits of earth mantle overlaying bedrock or clay; any naturally occurring surface deposit of sand, gravel, silt, clay, or any mixture thereof.
Storm water: Storm water runoff, snow melt runoff, and surface runoff and drainage, as per TPDES Permit Construction General Permit No.TXR1500000.
SWPPP: Storm Water Pollution Prevention Plan: The state or federally required plan for identifying and implementing appropriate measures to reduce pollutants in storm water discharges into the city's municipal separate storm water sewer systems (MS4), which pollutants include eroded sediments. Protective measures include, but are not limited to, natural and man-made collection components, good house-keeping for site maintenance, and other common sense actions, all frequently referred to as best management practices (BMP).
TCEQ: Texas Commission on Environmental Quality.
Unimproved: Natural conditions, unaltered.
Water Pollution Abatement Plan (WPAP): The State required plan that is described in 30 Texas Administrative Code, chapter 213 for identifying and implementing appropriate measures to reduce pollutants in Storm Water Discharges into identified sensitive areas of the Edwards Aquifer. The TCEQ TPDES Construction General Permit TXR150000, page 12, Item 5 " Discharge to the Edwards Aquifer Recharge Zone" identifies the requirement of protective measures of the Edwards Aquifer.
(Ord. No. 94002, § 1, 5-24-01; Ord. No. 2014-06-19-0472 , § 1(Exh. A), 6-19-14; Ord. No. 2019-02-14-0123 , § 1(Att. I), 2-14-19)