What Businesses are Considered to be Significant Industrial Users?
The following types of businesses are considered to be SIUs:
- Businesses engaged in operations identified as categorical processes by the EPA. These categorical processes include:
- Electroplating
- Metal finishing
- Nonferrous metals forming
- Battery manufacturing
- Businesses that discharge 25,000 gallons per day or more of process wastewater.
- The only exception is if the District has found that the business has no potential to violate local pretreatment standards including Local Limits.
- Businesses, regardless of size, whose discharge has the potential to adversely affect the operations of the District or its connectors. This includes such facilities as:
- Large food processors
- Large rendering plants
- Large film processing facilities
- Groundwater remediation projects including leaking underground tank cleanups
Note: Individual film developers are not regulated as SIUs at this time.