| Req ID | Category | Intent | Legal Status | Name | Subdomain(s) | Context | Conditions | Confidence |
|---|---|---|---|---|---|---|---|---|
| #Q001 | reporting | reporting | mandatory | Biosolids Annual Report (BAR) Content and Submission | wastewater | In accordance with EPA’s sewage sludge regulations, 40 CFR Part 503 or “Part 503”, sewage sludge pollutant monitoring and management information is summarized in the Biosolids Annual Report (BAR) and submitted to either the permitting authority. | high | |
| #Q002 | administrative | reporting | mandatory | Electronic Reporting Transition for Authorized States | wastewater | EPA and five of the authorized states (Arizona, Michigan, South Dakota, Texas, and Utah) have transitioned to electronic reporting states as part of Phase 2 implementation of the NPDES eRule. The remaining four will do so by December 2025. | Applies to the remaining four states authorized to administer the Part 503 regulations. | medium |
| #Q003 | reporting | reporting | mandatory | Annual Reporting for Larger Treatment Works | wastewater | Part 503 requires annual reports be submitted by the larger treatment works that land apply, incinerate, or surface dispose of their sewage sludge. These larger facilities are 1) major publicly owned treatment works (POTWs with a design flow rate greater than or equal to one million gallons per day); 2) POTWs that serve 10,000 people; 3) Class I sludge management facilities (treatment works that have an approved pretreatment program or have been classified as Class I sludge management facilities by the EPA or state); or 4) are otherwise required to report by the EPA or permitting authority. | Applies to larger treatment works that land apply, incinerate, or surface dispose of their sewage sludge, including major POTWs, POTWs serving 10,000 people, Class I sludge management facilities, or those otherwise required by the EPA or permitting authority. | high |
| #Q004 | administrative | operational | mandatory | Incorporation of OCPSF Standards into Discharge Permits | wastewater | The OCPSF Effluent Guidelines and Standards are incorporated into NPDES permits for direct dischargers and permits or other control mechanisms for indirect dischargers. | Applies to direct and indirect dischargers within the OCPSF category. | high |
| #Q005 | administrative | reporting | guidance | Verification of OCPSF Coverage and Applicability | wastewater | For precise definitions of coverage, refer to the applicability sections in 40 CFR Part 414. | Used for determining if a facility falls under OCPSF subcategories. | high |
| #Q006 | reporting | reporting | guidance | PFAS Data and Information Submission Request | wastewater | The EPA is also requesting information regarding PFAS formulators, which are facilities that produce a variety of PFAS products and materials from PFAS feedstocks. | Facilities involved in PFAS manufacturing or formulation. | high |
| #Q007 | administrative | reporting | mandatory | Criteria for Designating Metal and Cyanide Bearing Waste Streams | wastewater | Revised criteria for designating "metal-bearing" and "cyanide-bearing" waste streams. | Relevant for facilities managing metal or cyanide bearing waste. | high |
| #Q008 | monitoring | treatment | mandatory | Method for Determining BOD and TSS Limitations for Multi-subcategory Plants | wastewater | Specifies the method of determining BOD and TSS limitations for plants that manufacture products in more than one subcategory. | Plants producing products across multiple OCPSF subcategories. | high |
| #Q009 | operational | treatment | guidance | Alternative Cyanide Limitations for Complexed Cyanide | wastewater | Alternative cyanide limitations for unavoidable complexing of cyanide at the process source of cyanide-bearing waste streams. | Applies when complexing of cyanide is unavoidable at the process source. | high |
| #Q010 | operational | treatment | guidance | Metal Background Level Accommodation for Non-Metal-Bearing Streams | wastewater | Allows control authorities to accommodate low background levels of metals in non-metal-bearing waste streams that result from the corrosion of construction materials, intake water, or other incidental metal sources. | Applicable for low background levels of metals in streams not otherwise classified as metal-bearing. | high |
| #Q011 | reporting | reporting | mandatory | Biosolids Annual Report (BAR) Submission | wastewater | In accordance with EPA’s sewage sludge regulations, 40 CFR Part 503 or “Part 503”, sewage sludge pollutant monitoring and management information is summarized in the Biosolids Annual Report (BAR) and submitted to either the permitting authority. | high | |
| #Q012 | reporting | reporting | mandatory | Annual Reporting for Larger Treatment Works | wastewater | Part 503 requires annual reports be submitted by the larger treatment works that land apply, incinerate, or surface dispose of their sewage sludge. | Includes POTWs with design flow >= 1 MGD, POTWs serving 10,000 people, Class I sludge management facilities, or those otherwise required by the authority. | high |
| Req ID | Category | Intent | Legal Status | Name | Subdomain(s) | Limit Type | Limit Value | Context | Conditions | Confidence |
|---|---|---|---|---|---|---|---|---|---|---|
| #P001 | design | reporting | mandatory | design flow rate | wastewater | requirement | >= 1 million gallons per day | Part 503 requires annual reports be submitted by the larger treatment works that land apply, incinerate, or surface dispose of their sewage sludge. | Applies to major publicly owned treatment works (POTWs) to determine if they must submit an annual report. | high |
| #P002 | unknown | operational | mandatory | Precious Metal Alloy Composition Threshold | wastewater | requirement | >= 30 percent by weight | Any alloy containing 30 or greater percent by weight of precious metals is considered a precious metal alloy. | Applicable to silver, gold, platinum, and palladium alloys. | high |
| #P003 | unknown | operational | mandatory | Beryllium Alloy Composition Threshold | wastewater | requirement | >= 0.1 percent by weight | Beryllium alloys are any alloy in which beryllium is present at 0.1 percent or greater by weight. | high | |
| #P004 | unknown | operational | mandatory | Nonferrous Metal Alloy Exclusion Threshold | wastewater | requirement | > 50 percent by weight | Alloys for which iron, copper, or aluminum is greater than 50 percent by weight (except precious metals) are not included in the category of nonferrous metal alloys. | Applies to alloys where iron, copper, or aluminum is the major component. | high |
| #P005 | unknown | operational | mandatory | Iron, Copper, and Aluminum Alloy Exclusion Threshold | wastewater | requirement | > 50 percent by weight | Alloys for which iron, copper, or aluminum is greater than 50 percent by weight (except precious metals) are not included in the category of nonferrous metal alloys. | Exclusion criterion for alloys where iron, copper, or aluminum are the primary constituents. | high |
| #P006 | physical | operational | mandatory | Precious Metal Alloy Composition Threshold | wastewater | requirement | >= 30 percent by weight | Definition of precious metal alloy for regulatory coverage | Alloy contains silver, gold, platinum, or palladium | high |
| #P007 | physical | operational | mandatory | Beryllium Alloy Composition Threshold | wastewater | requirement | >= 0.1 percent by weight | Definition of beryllium alloy for regulatory coverage | high | |
| #P008 | physical | operational | mandatory | Nonferrous Metal Alloy Exclusion Threshold | wastewater | requirement | > 50 percent by weight | Alloys exceeding this threshold for iron, copper, or aluminum are excluded from this category | Except for precious metal alloys | high |
| #P009 | physical | operational | guideline | Frost Penetration Depth | other | requirement | 1.8 m | Frost penetration is considered to be 1.8 m in Toronto. | Specific to City of Toronto jurisdiction. | high |
| #P010 | design | treatment | mandatory | Groundwater Table Clearance | other | requirement | >= 1.0 m | Infiltration systems require a minimum clearance from the base of the GI's infiltration layer to the seasonal high groundwater table. | To minimize risk of groundwater contamination and mitigate mounding. | high |
| #P011 | operational | operational | mandatory | Soil Investigation Linear Interval | other | requirement | <= 50 m | Interval for soil properties and geotechnical investigations along linear/corridor applications of GI. | For linear GI projects. | high |
| #P012 | design | operational | mandatory | City Pedestrian Clearway Width | other | requirement | 2.1 m | The City requires a pedestrian clearway width that must be free of furniture and GI. | Applies to right-of-way design. | high |
| #P013 | design | operational | mandatory | Building Foundation Setback | other | requirement | >= 4 m | Infiltration-based GI systems shall be set back from buildings to avoid soil saturation near foundations. | Unless impermeable liners are used or foundation is waterproofed. | high |
| #P014 | design | treatment | mandatory | Native Soil Infiltration Rate Threshold | other | requirement | > 15 mm/hr | Requirement for native soil to permit infiltration-based GI without an underdrain. | Based on field measurements. | high |
| #P015 | design | operational | mandatory | Curb Opening Minimum Width | other | requirement | >= 600 mm | Minimum width at the base of curb openings to allow for maintenance. | Applicable to curb cut inlets. | high |
| #P016 | design | operational | mandatory | Underdrain Minimum Diameter | other | requirement | >= 200 mm | Minimum requirements for perforated HDPE or PVC piping used as underdrains. | Applies when systems require underdrains due to poor infiltration or freezing risk. | high |
| #P017 | design | aesthetic | mandatory | Minimum Soil Volume per Tree | other | requirement | >= 30 m3 | Available space for continuous soil trenches should provide a minimum volume of growing medium per tree. | To support shade trees to maturity. | high |
| #P018 | operational | health | recommended | Maximum Surface Ponding Duration | other | OG | <= 24 hours | Duration for surface ponding in bioretention and STT systems. | To limit mosquito breeding. | high |
| #P019 | design | operational | mandatory | Impervious to Pervious Ratio | other | requirement | 10:1 ratio | General ratio of impervious surface to pervious surface for contributing drainage areas. | Applicable to contributing drainage area evaluation. | high |
| #P020 | design | operational | mandatory | Bedrock Buffer Depth | other | requirement | > 1 m | Minimum clearance from the bottom of the GI system to the top of the bedrock layer. | Criteria for infiltration-based GI systems. | high |
| #P021 | chemical | operational | mandatory | Soil Standard Mix pH | other | requirement | 6.0 - 7.8 pH units | Specified pH range for Type 1 Standard Soil Mix. | Maximum deviation to 8.0 at Administrator discretion. | high |
| #P022 | design | aesthetic | mandatory | Tree Spacing | other | requirement | 8 m | Standard tree spacing on centre for streetscape design. | Can be up to 10 m if necessary. | high |
| #P023 | design | operational | mandatory | STT Contributing Slope | other | requirement | 1 - 5 % | Ideal contributing slopes for Stormwater Tree Trench installations. | Must not be greater than 20%. | high |
| #P024 | design | operational | mandatory | Maximum Ponding Depth | other | requirement | < 300 mm | Maximum ponding depth for Stormwater Tree Trenches for partial infiltration designs. | Applies when time to drain is up to 96 hours. | high |
| #P025 | unknown | reporting | mandatory | Subpart J Additional Pollutants | wastewater | requirement | 19 pollutants | 1993 Amendment added Subpart J limitations for additional pollutants for direct dischargers | Applicable to direct discharge point sources that use/do not use end-of-pipe biological treatment | high |
| #P026 | unknown | reporting | mandatory | Subpart K Pollutants | wastewater | requirement | 11 pollutants | 1993 Amendment added Subpart K limitations for pollutants for indirect dischargers | Applicable to indirect discharge point sources | high |
| Req ID | Category | Name | Context | Confidence |
|---|---|---|---|---|
| #D001 | Transportation Equipment Cleaning | Transportation Equipment Cleaning is the cleaning of the interiors of: tank trucks, rail tank cars, intermodal tank containers (containers with over 3,000 liter capacity), tank barges, closed-top hopper barges, and ocean/sea tankers used to transport materials or cargos that come into direct contact with the tank or container interior. | high | |
| #D002 | TEC | Transportation Equipment Cleaning | high | |
| #D003 | POTWs | publicly owned treatment works | high | |
| #D004 | intermodal tank containers | containers with over 3,000 liter capacity | medium | |
| #D005 | MP&M | Metal Products & Machinery | high | |
| #D006 | intermediate bulk containers | portable containers, also called totes, with 450 to 3,000 liter capacity | high | |
| #D007 | NPDES | National Pollutant Discharge Elimination System | high | |
| #D008 | SIC | Standard Industrial Classification | high | |
| #D009 | contact washwaters | All contact washwaters which have come into direct contact with the tank or container interior including pre-rinse cleaning solutions, chemical cleaning solutions, and final rinse solutions | high | |
| #D010 | TEC process wastewater | wastewater generated from a regulated TEC subcategory | high |