The Environmental Compliance Division is responsible for protecting the wastewater treatment plant and its biological processes from interference, pass-through, and contamination. Their work also ensures the wastewater discharges of categorical industrial users comply with Federal regulations.
Large industrial dischargers with 25,000 gallons per day or more of wastewater flow and/or significant loadings of total suspended solids (TSS) and biochemical oxygen demand (BOD) are regulated through a Significant Industrial User (SIU) permit system. The permits specify conditions for the acceptance of wastewater in the sanitary sewer system, including limits for pollutant concentrations and total wastewater flow.
Permit violators are subject to fines and penalties, including the possibility of termination of sewer service. Escalation in penalties is in accordance with the Enforcement Response Plan, which is on file with the Department of Municipal Utilities, the California Regional Water Quality Control Board, and the United States Environmental Protection Agency (USEPA). Environmental Compliance currently maintains approximately 50 SIU Permits.
Other smaller industrial users are regulated under Special Permits, which are issued for cases such as infrequent discharges or specific process materials. Ten special permits are currently maintained by Environmental Compliance. Also of significant concern is the need to control pollutant sources from groundwater remediation sites. Many of these sites are contaminated because of prior leaks from underground fuel tanks. At this time, the division maintains 16 Groundwater Discharge Permits.
Environmental Compliance regulates truck-hauled wastewater through both permits and a manifest system, which requires documentation of the source and type of hauled wastewater. There are currently 15 wastewater haulers that are permitted to discharge at the Regional Wastewater Control Facility.
Environmental Compliance conducts inspections, samples wastewater, reviews self-monitoring reports, writes permits, and enforces permit requirements as specified in Stockton Municipal Code, Chapter 13.08 (Pretreatment Ordinance).
The City’s Fats, Oils, and Grease (FOG) Control Program has been implemented by the Environmental Compliance division. This program involves reducing the amount of insoluble material entering the system that can cause clogs and overflows by inspecting 800+ food service establishments on an annual basis to ensure compliance with Stockton Municipal Code Chapter 13.40, FOG Control Ordinance: a link to the ordinance is provided under External Links below.
This City of Stockton web page last reviewed on --- 8/16/2012