NPDES Industrial and Commercial Guidelines

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State Permit Requirements

The City of Corona has ordinances that prohibit non-storm water discharges. However, most businesses have to also comply with the State of California Water Resources Control Board (SWRCB) regulations. Most manufacturing, processing and transportation businesses are required to file a General Industrial Permit with the State. The list of required businesses can be found on the State web site. The permit and additional information can be found online, on the Water Boards of California website. 

If an industrial facility is subject to the permit, the facility operator must file a Notice of Intent (NOI) with the SWRCB, pay an annual fee, prepare a storm water pollution precaution plan (SWPPP) and comply with specific permit requirements, including monitoring and reporting.

Industry specific information and answers to questions about applying for a permit can be obtained by visiting the state web site or by contacting Mr. Michael Roth of the Santa Ana Regional Board at (951) 320-2027.

City Ordinance Requirements

Allowing contaminated runoff or other pollutants to enter the storm water conveyance system is a violation of Corona Municipal Code 13.27.050.

Industrial and commercial sites should review current operational procedures to ensure that no discharge enters the storm drain. In particular, the following business types need to address NPDES issues regarding physical equipment and work processes:

  • Heavy and light manufacturing
  • Automobile, boat, or equipment mechanical repair, maintenance, fueling, or cleaning
  • Automobile and other vehicle body repair or painting
  • Mobile automobile or other vehicle washing
  • Automobile (or other vehicle) parking lots and storage facilities
  • Landscaping companies and nurseries
  • Shopping centers
  • Retail or wholesale fueling
  • Eating or drinking establishments
  • Mobile carpet, furniture or drapery cleaning services
  • Recycling facilities
  • Pest control services
  • Concrete and masonry services
  • Painting and coating
  • Pool and fountain cleaning
  • Golf courses, parks and other recreational areas/facilities

The use of appropriate storm water best management practices (BMPs) is required whether or not a facility is subject to the state's General Industrial Permit.

Owners and/or managers of these types of businesses should visit the following list of links and downloads to assist in determining the most appropriate BMPs for their facility.

Mobile Pressure Wash BMP Guidance - Vehicle and Equipment Washing and Detailing
Mobile Pressure Wash BMP Guidance - Surface Cleaning
Useful Links