An industrial user is prohibited from introducing a pollutant that causes pass-through or interference. This includes any:
- Hazardous waste
- Liquids, solids, or gases that may result in fire or explosion
- Solid or viscous substances which may obstruct flow
- Corrosive or toxic pollutants
- Residues, sludges, or scums that are unsuitable for reclamation and reuse
- Colored wastes such as dyes, radioactive wastes, and liquid wastes from chemical toilets, trailers, campers, or other recreational vehicles
- Wastewater having a pH of less than 5.0
For a complete list of prohibited pollutants and limitations, see the City of Grand Junction Municipal Code § 13.04.370.
Industrial Pretreatment Discharge Permit Application
Industrial Pretreatment uses industrial wastewater permits as a control mechanism to ensure all applicable pretreatment standards and requirements are met by significant industrial users. An industry can only discharge wastewater under the requirements and limitations described in the permit. The permit describes the duties and obligations of the permittee. These include applicable parameter limitations, prohibited discharge standards, monitoring and reporting requirements, and other conditions to be met by the permittee.
All new industrial users that are deemed significant are required to complete an Industrial Pretreatment Discharge Permit Application (PDF) and submit information about their facility and processes. The information includes:
- Building layouts
- Operational descriptions
- Spill control plans
- Waste treatment specifications
- Wastewater flow diagrams
A significant user means the industry performs a categorical process or discharges wastewater deemed significant due to pollutant concentration or volume. All forms and applications must be entirely completed and returned with an original wet signature. Digital and electronic signatures will not be accepted per U.S. Environmental Protection Agency (EPA) regulations.