| #Q001 | prohibition | operational | mandatory | Sanitary Sewer Overflow Prohibition | wastewater | Like other point source discharges from municipal sanitary sewer systems, SSOs are prohibited unless authorized by a NPDES permit. | Unless authorized by a NPDES permit | high |
| #Q002 | reporting | reporting | mandatory | Great Lakes CSO Public Notification Requirements | wastewater, recreational water | The requirements address signage, initial notification of local public health departments and other potentially affected entities, initial notification of the public, annual notice provisions, and development of a public notification plan. | combined sewer discharges (CSOs) to the Great Lakes | high |
| #Q003 | reporting | reporting | mandatory | Electronic Reporting Requirement | wastewater | It requires permittees and regulators to use existing, available information technology to electronically report information and data related to the NPDES permit program in lieu of filing paper-based reports. | | high |
| #Q004 | monitoring | operational | mandatory | Sufficiently Sensitive Test Methods Requirement | wastewater | only "sufficiently sensitive" analytical test methods may can be used when completing an NPDES permit application and when performing sampling and analysis pursuant to monitoring requirements in an NPDES permit. | completing an NPDES permit application and performing sampling and analysis pursuant to monitoring requirements | high |
| #Q005 | treatment | treatment | mandatory | Cooling Water Intake Mortality Reduction Selection | aquatic life | The facilities are required to choose one of seven options to reduce mortality to fish and other aquatic organisms. | existing facilities that are designed to withdraw at least 2 million gallons per day of cooling water | high |
| #Q006 | monitoring | operational | mandatory | Cooling Water Intake Site-Specific Control Studies | aquatic life | Facilities that withdraw at least 125 million gallons per day must conduct studies to help their permitting authority determine whether and what site-specific controls, if any, would be required to further reduce mortality of aquatic organisms. | Facilities that withdraw at least 125 million gallons per day | high |
| #Q007 | treatment | treatment | mandatory | Cooling Water Mortality Reduction for New Units | aquatic life | New units added to an existing facility are required to reduce mortality of aquatic organisms that achieves one of two alternatives under national entrainment standards. | New units added to an existing facility | high |
| #Q008 | reporting | reporting | mandatory | Large CAAP Facility Drug Reporting Requirement | wastewater, aquatic life | Reporting the use of certain drugs and the occurrence of unanticipated discharges makes permitting authorities aware of such discharges. | CAAP facilities that produce 100,000 pounds or more of aquatic animals | high |
| #Q009 | operational | operational | mandatory | CAAP BMP Plan Maintenance | wastewater | Developing and maintaining a BMP plan. ... Best Management Plans (BMPs) ensure that producers have procedures in place to control discharges of pollutants from the facility. Annual updates ensure the plans account for facility changes and new or innovative BMPs. | CAAP facilities that produce 100,000 pounds or more of aquatic animals | high |
| #Q010 | operational | treatment | mandatory | Solids Control for Flow-Through Systems | wastewater | NPDES permits for these facilities include requirements for: Solids control (flow-through and recirculating systems only); ... Routine cleaning of rearing units and settling basins minimizes discharge of accumulated solids. | CAAP facilities using flow-through and recirculating systems | high |
| #Q011 | operational | treatment | mandatory | Net Pen Management Requirements | wastewater, aquatic life | NPDES permits for these facilities include requirements for: ... Feed management, waste collection and disposal, transport or harvest discharge, and carcass removal (net pens only) | CAAP facilities using net pens | high |
| #Q012 | administrative | reporting | mandatory | Facility Recordkeeping Requirement | wastewater | Maintaining records on feeding, number and weight of aquatic animals, cleaning, inspections, maintenance, and repairs provides documentation that the operator has implemented required management activities. | CAAP facilities | high |
| #Q013 | administrative | operational | mandatory | Staff Training Requirement | wastewater | Training staff on proper spill prevention, operation, and cleaning procedures prepares them to prevent and respond to accidental discharges and spills, operate the system efficiently, and reduce discharges of solids and nutrients. | CAAP facilities | high |
| #Q014 | operational | treatment | mandatory | Carcass Removal Requirement | wastewater, aquatic life | Regular and frequent removal of animal mortalities prevents their discharge to the surrounding water. | CAAP facilities using net pens | high |
| #Q015 | treatment | treatment | mandatory | Implementation of Effluent Guidelines (40 CFR Part 451) | wastewater | NPDES permits for concentrated aquatic animal production (CAAP) facilities that produce 100,000 pounds or more of aquatic animals must include requirements to implement the effluent guidelines established at 40 CFR Part 451. | CAAP facilities producing 100,000 pounds or more of aquatic animals | high |
| #Q016 | operational | operational | mandatory | Material Storage and Spill Response | wastewater | Proper storage of feed, drugs, chemicals, and pesticides reduces chances of leaks and spills. Prompt cleanup of leaks and spills prevents pollutants from entering the receiving water. | NPDES-permitted CAAP facilities | high |
| #Q017 | operational | operational | mandatory | Structural Maintenance and Inspection | wastewater | Routine inspections by facility staff help identify damage and necessary repairs. Regular maintenance keeps facilities functioning properly to maintain efficiency and prevent unintended discharges. | NPDES-permitted CAAP facilities | high |
| #Q018 | operational | operational | guidance | Escape Prevention and Response Plans | aquatic life | Escape prevention and response plans ensure that producers have procedures in place to prevent fish escape and can take action in the event fish escape occurs. | Often required for net pen aquaculture facilities | high |
| #Q019 | monitoring | reporting | guidance | Source Water Monitoring | wastewater | Source water monitoring provides information on levels of pollutants in the intake water. Some permits require source water monitoring, particularly where intake credits or net limits are allowed. | Particularly where intake credits or net limits are allowed | high |
| #Q020 | monitoring | reporting | guidance | Effluent Monitoring | wastewater | Effluent monitoring helps assess pollutant levels and verify compliance with NPDES permit conditions. | | high |
| #Q021 | design | operational | guidance | Production System and Discharge Point Siting | wastewater, aquatic life | Properly siting production system and discharge points prevents adverse environmental impacts (e.g., to endangered or threatened species and their critical habitat and historical sites) and other use conflicts (e.g., water use, navigation, or other local or state requirements). | | high |
| #Q022 | operational | treatment | guidance | Net Hygiene Practices | wastewater, aquatic life | Proper net hygiene practices prevent discharges of biofouling organisms, solids, and anti-fouling chemicals. | Net pen aquaculture facilities | high |
| #Q023 | operational | treatment | mandatory | Net Pen Waste Collection and Disposal | wastewater | Collection and proper disposal of feed bags, packaging, rope, and netting prevents their release to the surrounding environment. | CAAP facilities using net pens | high |
| #Q024 | operational | treatment | mandatory | Transport or Harvest Discharge Management | wastewater, aquatic life | Proper disposal of transport water and harvest wastes (e.g., blood, viscera, carcasses) minimizes waste materials discharged overboard. | CAAP facilities using net pens | high |