| #Q001 | administrative | health | mandatory | EPA Standard Establishment | wastewater | As amended, CWA Section 405(d), 33 U.S.C. 1345(d), requires the EPA to: Establish numerical limits and management practices that protect public health and the environment from the reasonably anticipated adverse effects of toxic pollutants in sewage sludge. | Under Clean Water Act Section 405(d) | high |
| #Q002 | administrative | health | mandatory | Biennial Regulatory Review | wastewater | Section 405(d) of the CWA requires the EPA to review sewage sludge regulations at least every two years for the purpose of identifying additional pollutants that may be present in sewage sludge and, if appropriate, to propose practices and standards for those pollutants consistent with the requirements set forth in the CWA. | At least every two years | high |
| #Q003 | administrative | operational | mandatory | Part 503 Self-Implementing Compliance | wastewater | This means that the requirements of Part 503 must be met even if a permit has not been issued. | Applies even without an issued permit | high |
| #Q004 | reporting | reporting | mandatory | Annual Biosolids Reporting | wastewater | Certain treatment works specified by Part 503 are required to submit an annual report on biosolids treatment and management practices to their permitting authority by February 19 of each year. | Applies to certain treatment works specified by Part 503 | high |
| #Q005 | reporting | reporting | recommended | Reporting Suspected Noncompliance | wastewater | Please contact the EPA Biosolids Center of Excellence and/or your regional and state biosolids coordinator if you suspect noncompliance at a wastewater treatment plant, sewage sludge incinerator, land application site or surface disposal site. | If noncompliance is suspected | high |
| #Q006 | administrative | operational | mandatory | SSI Clean Air Act Compliance | wastewater | SSIs must also comply with CAA requirements. | Applies to sewage sludge incinerators (SSIs) | high |
| #Q007 | administrative | operational | mandatory | Part 417 Effluent Guideline Compliance | wastewater | Part 417 covers direct and indirect dischargers. The Effluent Guidelines and Standards are incorporated into NPDES permits for direct dischargers and permits or other control mechanisms for indirect dischargers. | Applicable to industrial facilities manufacturing soap and detergents except those specifically excluded (shampoos, shaving products, etc.) | high |
| #Q008 | monitoring | reporting | mandatory | BOD7 Parameter Application | wastewater | The parameter BOD7 is used in subparts O, Q, and R. | Applies only to facilities in Subparts O, Q, and R | high |
| #Q009 | monitoring | operational | guidance | BOD7 Analytical Method Selection | wastewater | There is no approved analytical method for BOD7 in the EPA's test procedures regulation at 40 CFR Part 136. There is a method available in Standard Methods, no. SM 5210C, which is called "Ultimate BOD Test" that can be run for 90 days. | Used for monitoring BOD7 when an approved EPA method is unavailable | high |
| #Q010 | administrative | operational | mandatory | Individual Permit Reapplication | wastewater | The authority issues the permit to the facility for a specific time period (not to exceed five years) with a requirement that the facility reapply prior to the expiration date. | Applicable to facilities issued individual NPDES permits | high |
| #Q011 | administrative | operational | mandatory | Individual Permit Application Requirement | other | Once a facility submits the appropriate application(s), the permitting authority develops a permit for that particular facility based on the information contained in the permit application (e.g., type of activity, nature of discharge, receiving water quality). | Prerequisite for the issuance of an individual NPDES permit | high |
| #Q012 | administrative | operational | mandatory | CHWC Permit Incorporation | wastewater | The CHWC Effluent Guidelines are incorporated into NPDES permits for direct dischargers and permits or other control mechanisms for indirect dischargers. | Applicable to direct and indirect dischargers of hazardous waste combustor wastewater | high |
| #Q013 | operational | operational | mandatory | Commercial Facility Applicability | wastewater | The CHWC regulation applies solely to commercial facilities (i.e., facilities that accept wastes from off-site for fee or remuneration). | Does not apply to facilities accepting waste without fee, or burning only on-site/corporate waste | high |
| #Q014 | operational | operational | mandatory | Covered Wastestreams | wastewater | Sources of CHWC wastewater covered by the regulation include only water used in air pollution control systems, and water used to quench flue gas or slag generated as a result of thermal operations. | Limits coverage to specific process waters | high |
| #Q015 | administrative | operational | mandatory | CHWC Regulatory Scope and RCRA Status | wastewater | The regulation (40 CFR Part 444) covers wastewater discharges from hazardous waste combustor facilities, except cement kilns, regulated as "incinerators" or "boilers and industrial furnaces" under the Resource Conservation and Recovery Act (RCRA). | Applicable to facilities regulated under RCRA as incinerators or boilers and industrial furnaces; specifically excludes cement kilns | high |
| #Q016 | operational | operational | mandatory | Commercial Facility Applicability and Exclusions | wastewater | The CHWC regulation applies solely to commercial facilities (i.e., facilities that accept wastes from off-site for fee or remuneration). It does not apply to commercial facilities that only accept off-site wastes that are of a similar nature to the wastes being generated and burned on site. The regulation does not apply to a hazardous waste combustor facility that accepts wastes from off-site without a fee or other remuneration. For example, it does not apply to a hazardous waste combustor facility that accepts off-site wastes only as a public service or pursuant to product stewardship agreements, as long as that facility accepts no fee or other remuneration for accepting those wastes. The regulation is not applicable to hazardous waste combustors that only burn waste generated on site or off-site from facilities under their same corporate structure. | Facilities must accept waste for fee; exclusions apply for similar-nature wastes, public service/product stewardship without fee, and captive/corporate-only waste streams | high |