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Document ID us-ca-npdessa-2024-12-16-2 Title National Pollutant Discharge Elimination System (NPDES) Spray Application URL https://www.waterboards.ca.gov/water_issues/programs/npdes/pretreat.html Jurisdiction /us/ca Subdomain(s) none Language Status completed Analyzed at 2026-05-12 05:01:59.038537+00:00 Relevance inventory_targeted_fetch

Q Qualitative Requirements (23)

Req ID Category Intent Legal Status Name Subdomain(s) Context Conditions Confidence
#Q001administrativetreatmentmandatoryPOTW Pretreatment Program Implementation (Flow > 5 mgd)wastewaterPOTWs are required to have pretreatment programs when their total design flows are greater than five million gallons per day (5 mgd) and they receive industrial pollutants that could pass through or interfere with POTW operations.total design flows are greater than five million gallons per day (5 mgd) and they receive industrial pollutants that could pass through or interfere with POTW operationshigh
#Q002administrativetreatmentmandatoryPOTW Pretreatment Program Implementation (Flow <= 5 mgd)wastewaterPOTWs with smaller flows (5 mgd or less) may also be required to implement a pretreatment program if they receive industrial waste and pretreatment is warranted.flows 5 mgd or less, receive industrial waste, and pretreatment is warrantedhigh
#Q003administrativeoperationalmandatoryState Water Board ResponsibilitieswastewaterThe State Water Board is responsible for supporting and providing general oversight of the Regional Water Boards’ management of the pretreatment programs in California. This responsibility includes the following: * Providing general oversight of the pretreatment program in California; * Providing technical and legal assistance to Regional Water Boards’ staff, POTWs, and industrial users; * Developing and maintaining a data management system; * Providing information to USEPA and other organizations as required and/or requested; and * Reviewing and ruling on petitions for review of Regional Water Board decisions.high
#Q004monitoringoperationalmandatoryRegional Water Board Pretreatment Compliance AuditswastewaterPretreatment compliance audits involve a comprehensive review of all elements of a POTW's pretreatment program. Audits take place every five years.high
#Q005monitoringoperationalmandatoryRegional Water Board Pretreatment Compliance InspectionswastewaterPretreatment compliance inspections verify the compliance status of POTWs, focusing on the POTW's own compliance monitoring and enforcement activities. [...] Inspections usually occur every year, except when an audit is scheduled.except when an audit is scheduledhigh
#Q006treatmenttreatmentmandatoryDental Amalgam Separator InstallationwastewaterThe Dental Amalgam Rule requires dental offices that place and/or remove amalgam to: 1. Install and maintain amalgam separators;dental offices that place and/or remove amalgamhigh
#Q007operationaloperationalmandatoryDental Amalgam Industrial PracticeswastewaterThe Dental Amalgam Rule requires dental offices that place and/or remove amalgam to: [...] 2. Implement further necessary industrial practices to eliminate disposal of amalgam into the local sewer system;dental offices that place and/or remove amalgamhigh
#Q008reportingreportingmandatoryDental Amalgam One-Time Compliance ReportwastewaterThe Dental Amalgam Rule requires dental offices that place and/or remove amalgam to: [...] 3. Submit a one-time compliance report to their Control Authority by October 12, 2020.dental offices that place and/or remove amalgamhigh
#Q009reportingreportingmandatoryDental Amalgam Report Submission to Local AgencywastewaterIf a local sanitation agency implements a federal Pretreatment Program for its sewer system, that sanitation agency is your Control Authority. Send your one-time compliance report to the identified local sanitation agency per their instructions.If a local sanitation agency implements a federal Pretreatment Program for its sewer systemhigh
#Q010reportingreportingmandatoryDental Amalgam Report Submission to State Water BoardwastewaterIf a local sanitation agency does not implement a federal Pretreatment Program, the State Water Resources Control Board assumes the role of the Control Authority. Submit the electronic copy of the one-time compliance report to the following email address: DMR@waterboards.ca.govIf a local sanitation agency does not implement a federal Pretreatment Programhigh
#Q011administrativeoperationalmandatoryRWQCB Discretionary Permit Coverage Authorityothera Regional Water Quality Control Board may require a facility to obtain permit coverage even if it is not otherwise required to do so if the Regional Water Quality Control Board determines that the facility’s discharge contributes to a violation of water quality standards or is a significant contributor of pollutants to waters of the United States.Regional Water Quality Control Board determines that the facility’s discharge contributes to a violation of water quality standards or is a significant contributor of pollutants to waters of the United Stateshigh
#Q012administrativeoperationalmandatoryTransportation Facility Maintenance Regulation ScopeotherThe facility is regulated only if it has vehicle maintenance shops, equipment cleaning operations, or airport deicing operations, and only the portions of the facility involved in vehicle maintenance (including vehicle rehabilitation, mechanical repairs, painting, fueling, and lubrication) are regulated.facility has vehicle maintenance shops, equipment cleaning operations, or airport deicing operationshigh
#Q013administrativeoperationalmandatorySewage and Wastewater Treatment Works ThresholdwastewaterThe facilities regulated by the Industrial General Permit are facilities used in the storage, treatment, recycling, and reclamation of municipal or domestic sewage, including land dedicated to the disposal of sewage sludge, that are located within the confines of the facility, with a design flow of one million gallons per day or more, or required to have an approved pretreatment program under 40 Code of Federal Regulations part 403.design flow of one million gallons per day or more, or required to have an approved pretreatment programhigh
#Q014administrativeoperationalmandatoryHazardous Waste and Landfill Regulation ScopeotherFacilities classified under this SIC code are regulated by the Industrial General Permit if they conduct activities described in the Industrial General Permit, Attachment A, category 4, “Hazardous Waste Treatment, Storage, or Disposal Facilities,” or category 5 “Landfills, Land Application Sites, and Open Dumps.”conduct activities described in category 4 (hazardous waste) or category 5 (landfills)high
#Q015administrativeoperationalmandatoryLivestock and Dairy Facility Regulation ScopeotherThe facility is regulated only if it has other activities on-site that are subject to the requirements of 40 Code of Federal Regulations, Chapter I, Subchapter N, Part 412, Subparts A, C, or D. Only the portions of the facility involved in those activities are regulated.Facility is classified under SIC codes 0212, 0219, 0241, 0273, 0272, 0273, or 0291high
#Q016prohibitionoperationalmandatoryMining and Oil/Gas Facility ExclusionsotherFacilities not regulated by the Industrial General Permit include (1) areas of coal mining operations no longer meeting the definition of a reclamation area under 40 Code of Federal Regulations 434.11(1) because the performance bond issued to the facility by the appropriate Surface Mining Control and Reclamation Acts authority has been released; (2) areas of non-coal mining operations which have been released from applicable State or Federal reclamation requirements after December 17, 1990; (3) sites where mining claims are being maintained prior to disturbances associated with the extraction, beneficiation, or processing of mined material; and (4) sites where minimal activities are undertaken for the sole purpose of maintaining a mining claim.Mining/Oil and Gas facilities (SIC codes flagged with footnote 5) meeting specified exclusion criteriahigh
#Q017administrativeoperationalmandatorySteam Electric Power Generating Facilities ScopeotherOnly facilities that generate steam for electric power through the combustion of coal, oil, wood, etc. are regulated by the Industrial General Permit.Facility classified under SIC code 4911high
#Q018administrativeoperationalmandatoryRecycling Facilities Regulation ScopeotherOnly facilities involved in the recycling of materials, including metal scrapyards, battery reclaimers, salvage yards, and automobile junkyards are regulated by the Industrial General Permit.Facility classified under SIC codes 5015 or 5093high
#Q019administrativeoperationalmandatorySewage and Wastewater Treatment Works Regulation ScopewastewaterThe facilities regulated by the Industrial General Permit are facilities used in the storage, treatment, recycling, and reclamation of municipal or domestic sewage, including land dedicated to the disposal of sewage sludge, that are located within the confines of the facility, with a design flow of one million gallons per day or more, or required to have an approved pretreatment program under 40 Code of Federal Regulations part 403.design flow of one million gallons per day or more, or required to have an approved pretreatment program under 40 CFR part 403high
#Q020administrativeoperationalmandatoryBeef Cattle Feedlot Regulatory DefinitionotherAs defined in 40 Code of Federal Regulations, Chapter I, Subchapter N, Part 412, Subpart CApplies to Beef Cattle Feedlots (SIC 0211)high
#Q021administrativeoperationalmandatorySwine and Poultry Regulatory DefinitionotherAs defined in 40 Code of Federal Regulations, Chapter I, Subchapter N, Part 412, Subpart DApplies to Hogs (0213), Broiler/Fryer/Roaster Chickens (0251), Chicken Eggs (0252), Turkeys & Eggs (0253), Poultry Hatcheries (0254), and Poultry and Eggs not elsewhere classified (0259)high
#Q022administrativeoperationalmandatorySheep and Equine Regulatory DefinitionotherAs defined in 40 Code of Federal Regulations, Chapter I, Subchapter N, Part 412, Subpart AApplies to Sheep (0214) and Horses and Other Equines (0272)high
#Q023administrativereportingmandatorySIC Code Evaluation RequirementotherWhen evaluating whether a facility is required to obtain coverage under the Industrial General Permit on the basis of its SIC code, please consider any applicable footnote at the bottom of this webpage.high

P Quantitative Requirements (13)

Req ID Category Intent Legal Status Name Subdomain(s) Limit Type Limit Value Context Conditions Confidence
#P001designoperationalmandatoryPOTW Total Design Flow Pretreatment Requirementwastewaterrequirement> 5 mgdPOTWs are required to have pretreatment programs when their total design flows are greater than five million gallons per day (5 mgd)they receive industrial pollutants that could pass through or interfere with POTW operationshigh
#P002designoperationalguidancePOTW Smaller Flow Pretreatment Requirementwastewaterrequirement<= 5 mgdPOTWs with smaller flows (5 mgd or less) may also be required to implement a pretreatment programif they receive industrial waste and pretreatment is warrantedhigh
#P003operationaloperationalmandatoryOcean-going ship tonnage threshold for sewage discharge prohibitionsotherrequirement>= 300 gross tonsocean-going ships with sufficient holding tank capacity operating in California watersapplies to vessels subject to No Discharge Zone (NDZ) regulationshigh
#P004operationaloperationalmandatoryPretreatment Compliance Audit Frequencywastewaterrequirement5 yearsPretreatment compliance audits involve a comprehensive review of all elements of a POTW's pretreatment program.Audits take place every five years.high
#P005operationaloperationalmandatoryPretreatment Compliance Inspection Frequencywastewaterrequirement1 yearPretreatment compliance inspections verify the compliance status of POTWs.Inspections usually occur every year, except when an audit is scheduled.high
#P006designoperationalmandatoryPOTW Total Design Flow Pretreatment Requirementwastewaterrequirement> 5 mgdPOTWs are required to have pretreatment programs when their total design flows are greater than five million gallons per day (5 mgd)they receive industrial pollutants that could pass through or interfere with POTW operationshigh
#P007designoperationalguidancePOTW Smaller Flow Pretreatment Requirementwastewaterrequirement<= 5 mgdPOTWs with smaller flows (5 mgd or less) may also be required to implement a pretreatment programif they receive industrial waste and pretreatment is warrantedhigh
#P008operationaloperationalmandatoryPretreatment Compliance Audit Frequencywastewaterrequirement5 yearsPretreatment compliance audits involve a comprehensive review of all elements of a POTW's pretreatment program.Audits take place every five years.high
#P009operationaloperationalmandatoryPretreatment Compliance Inspection Frequencywastewaterrequirement1 yearPretreatment compliance inspections verify the compliance status of POTWs.Inspections usually occur every year, except when an audit is scheduled.high
#P010designoperationalmandatoryMandatory Pretreatment Program Design Flow Thresholdwastewaterrequirement> 5 mgdPOTWs are required to have pretreatment programs when their total design flows exceed this limit.Receipt of industrial pollutants that could pass through or interfere with POTW operations.high
#P011designoperationalguidanceConditional Pretreatment Program Design Flow Thresholdwastewaterrequirement<= 5 mgdPOTWs with smaller flows (5 mgd or less) may also be required to implement a pretreatment program.If they receive industrial waste and pretreatment is warranted.high
#P012operationaloperationalmandatoryGrid Reliability Procurement Capacityaquatic liferequirement3300 MWProcurement associated with CPUC Decision 19-11-016 to address system-wide grid reliability concerns.Short-term concerns while new capacity comes online.high
#P013operationalreportingmandatoryEnergy Agency Status Reporting Frequencyaquatic liferequirement1 quarterEnergy agencies must provide status updates to the State Water Board for projects associated with Decision 19-11-016.Applies to projects anticipated to be online by August 1, 2021.high

D Definitions (30)

Req ID Category Name Context Confidence
#D001SWAMPSurface Water Ambient Monitoring Programhigh
#D002HABsHarmful Algal Bloomshigh
#D003CWTClean Water Teamhigh
#D004CalEPACalifornia Environmental Protection Agencyhigh
#D005SWRCBState Water Resources Control Boardhigh
#D006SWAMPSurface Water Ambient Monitoring Programhigh
#D007HABsHarmful Algal Bloomshigh
#D008CWTClean Water Teamhigh
#D009California Water Boardsinclude the State Water Resources Control Board and nine Regional Boardshigh
#D010CalEPACalifornia Environmental Protection Agencyhigh
#D011SWRCBState Water Resources Control Boardhigh
#D012WIDBWell Inventory Databasehigh
#D013COMTRScounty-meridian-township-range and sectionhigh
#D014PURPesticide Use Reporthigh
#D015GWPAGroundwater Protection Areashigh
#D016PLSSPublic Land Survey Systemhigh
#D017CalPIPCalifornia Pesticide Information Portalhigh
#D018DivisionDivision of Water Rightshigh
#D019CEQACalifornia Environmental Quality Acthigh
#D020PolicyPolicy for Maintaining Instream Flows in Northern California Coastal Streamshigh
#D021CDACumulative Diversion Analysishigh
#D022NPDESNational Pollutant Discharge Elimination Systemhigh
#D023pretreatmentThe practice of removing pollutants from industrial wastewaters before they are discharged into municipal sewage treatment systemshigh
#D024POTWspublicly owned treatment workshigh
#D0255 mgdfive million gallons per dayhigh
#D026U.S. EPAUnited States Environmental Protection Agencyhigh
#D027Pretreatment compliance inspectionsverify the compliance status of POTWs, focusing on the POTW's own compliance monitoring and enforcement activities.high
#D028Pretreatment compliance auditsinvolve a comprehensive review of all elements of a POTW's pretreatment program.high
#D029SICStandard Identification Classificationhigh
#D030Control AuthorityIf a local sanitation agency implements a federal Pretreatment Program for its sewer system, that sanitation agency is your Control Authority. If a local sanitation agency does not implement a federal Pretreatment Program, the State Water Resources Control Board assumes the role of the Control Authority.high