Urban stormwater regulations applicable to central coast region

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An environmental summary created by the ENVS 560/L Watershed Systems class at CSUMB.

Regulatory Background

Applicable regulations specific to the Central Coast of California

Federal

Federal laws that affect stormwater management

  • Clean Water Act, Section 402: National Pollution Discharge Elimination System (NPDES) - The United States Environmental Protection Agency (EPA) is required to manage a permit system regulating point sources of water pollution. This system requires industrial and municipal agencies to obtain an NPDES permit before discharging point source pollution into local bodies of water. In addition to regulating pollutant discharge, the permit requires municipal separate storm water systems (MS4s) to develop a Storm Water Management Plan (SWMP) for their region [1].
    • Phase I (1990) requires cities and certain counties with populations of 100,000 or more to acquire NPDES permits for their storm water discharges. Phase I MS4s are covered by individual permits [2].
    • Phase II (1999) requires regulated MS4s for cities and certain counties with populations under 100,000 to acquire NPDES permits for their storm water discharges. Phase II MS4s are covered by a general permit [2].
  • Coastal Nonpoint Pollution Control Program, which falls under Section 6217 of the Coastal Zone Act Reauthorization Amendments (CZARA), is jointly administered by National Oceanic and Atmospheric Administration (NOAA) and the Environmental Protection Agency [3].

State

California State Water Resources Control Board (SWRCB)

  • CalTrans Program
    • The California Department of Transportation (CalTrans) is the governing agency responsible for the management, maintenance, construction, and design of the State highway system, including freeways, bridges, tunnels, CalTrans' facilities, and associated properties. CalTrans is subject to the permitting requirements defined by the Clean Water Act, Section 402(p) NPDES program. Though storm water discharges were originally regulated by individual permits, the State Water Board issued a State-wide permit (CalTrans MS4 Permit Order No. 99-06-DWQ) which regulated all discharges from Caltrans MS4s, construction activities, and maintenance facilities [4].
  • Construction Storm Water Program
    • This program requires all construction projects greater than or equal to one acre, as well as projects under one acre that are connected to a larger construction plan, to obtain a General Permit for Discharges of Storm Water Associated with Construction Activity (Construction General Permit Order 2009-0009-DWQ). This permit requires the development and implementation of a Storm Water Pollution Prevention Plan (SWPPP), which applies BMPs for runoff associated with the construction project, a visual monitoring program for pollutants (or "non-visual" chemical monitoring program if there are failures of BMPs), and a site map(s) illustrating the construction site perimeter, storm water collection and discharge points, existing and proposed buildings, lots, roadways, general topography both before and after construction, and drainage patterns across the project [5].
  • Industrial Storm Water Program
    • This program requires certain industrial facilities to obtain a General Permit for discharges associated with the facilities industrial activities (Industrial Storm Water General Permit Order 97-03-DWQ). The facilities under jurisdiction of this permit include: manufacturing facilities; oil and gas/mining facilities; hazardous waste, treatment, storage, or disposal facilities; landfills, land application sites, and open dumps; recycling facilities; steam electric power generating facilities; transportation facilities; sewage or wastewater treatment works; manufacturing facilities where industrial materials, equipment, or activities are exposed to storm water; and facilities subject to storm water effluent limitations guidelines, new source performance standards, or toxic pollutant effluent standards [6]. This permit requires management measures that will achieve best available technology (BAT) that is economically achievable and best conventional pollutant control technology (BCT). This permit also requires the development and implementation of a SWPPP [7].
  • Municipal Storm Water Program
    • This program regulates storm water discharge from MS4s, which convey untreated runoff containing pollutants from urbanized areas and areas with impervious surface cover to local bodies of water. MS4 permits are issued in two phases (Phase I and Phase II), depending on the size of the MS4 (see Federal Regulations section above). The EPA works with State and Regional water management agencies to administer the NPDES permitting program for municipalities. Some of the requirements of the NPDES permits include the creation of a SWMP, BMPs, and measures to reduce pollutants entering waterways to the maximum extent practicable (MEP) [8].

Regional

Central Coast Regional Water Quality Control Board (CCRWQCB)

References

  1. Environmental Protection Agency. Clean Water Act Section 402
  2. 2.0 2.1 Stormwater Discharges From Municipal Separate Storm Sewer Systems (MS4s)
  3. Coastal Zone Act Reauthorization Amendments (CZARA)
  4. State Water Resources Control Board, CalTrans Program
  5. State Water Resources Control Board, Construction Storm Water Program
  6. State Water Resources Control Board, Industrial Storm Water General Permit Order 97-03-DWQ
  7. State Water Resources Control Board, Industrial Storm Water Plan
  8. State Water Resources Control Board, Municipal Storm Water Program

Links

Disclaimer

This page may contain student work completed as part of assigned coursework. It may not be accurate. It does not necessary reflect the opinion or policy of CSUMB, its staff, or students.