| #D001 | | PFOA | Perfluorooctanoic Acid | high |
| #D002 | | PFOS | Perfluorooctane Sulfonic Acid | high |
| #D003 | | monofill | a sewage sludge-only landfill | high |
| #D004 | | Part 503 | EPA’s sewage sludge regulations | high |
| #D005 | | BAR | Biosolids Annual Report | high |
| #D006 | | major publicly owned treatment works | POTWs with a design flow rate greater than or equal to one million gallons per day | high |
| #D007 | | 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 | high |
| #D008 | | POTWs | publicly owned treatment works | high |
| #D009 | | .gov | website belongs to an official government organization in the United States | high |
| #D010 | | BEACH Act | Beaches Environmental Assessment and Coastal Health Act | high |
| #D011 | | Tier 4 | beaches included in a water quality monitoring and public notification program list that are not part of the program | high |
| #D012 | | BEACON | Beach Advisory and Closing Online Notification system | high |
| #D013 | | NFMF | Nonferrous Metals Forming and Metal Powders | high |
| #D014 | | direct dischargers | A point source that discharges pollutants to waters of the United States, such as streams, lakes, or oceans. | high |
| #D015 | | indirect dischargers | A facility that discharges pollutants to a publicly owned treatment works (municipal sewage treatment plant). | high |
| #D016 | | Forming | the set of manufacturing operations in which metals and alloys are made into semi-finished products by hot or cold working | high |
| #D017 | | Nonferrous metal | any pure metal other than iron, copper, or aluminum; or metal alloy for which a metal other than iron, copper, or aluminum is its major constituent by weight | high |
| #D018 | | Alloys | considered as only one metal type. The metal type of any particular alloy is defined to be the metal that is the major component in percent by weight except for precious metals (silver, gold, platinum, and palladium) and beryllium | high |
| #D019 | | Precious metal alloy | Any alloy containing 30 or greater percent by weight of precious metals | high |
| #D020 | | Beryllium alloys | any alloy in which beryllium is present at 0.1 percent or greater by weight | high |
| #D021 | | Metal powders | include nonferrous metals and alloys as previously described, along with iron, copper, and aluminum and their alloys | high |
| #D022 | | Surface treatment | any chemical or electrochemical treatment applied to the surface of the metal | high |
| #D023 | | POTWs | publicly owned treatment works | high |
| #D024 | | NAICS | North American Industrial Classification System | high |
| #D025 | | Forming operations | include rolling (both hot and cold), extruding, forging, and drawing; also cladding, tube reducing, swaging, and metal powder production. | high |
| #D026 | | Ancillary operations | include casting for subsequent forming, heat treatment, surface treatment, surface coating, alkaline cleaning, solvent degreasing, product testing, and wet air pollution controls on forming operations and the associated operations. | high |
| #D027 | | Precious metals | silver, gold, platinum, and palladium | high |
| #D028 | | Metal powder production processes | include milling, abrading or atomizing | high |
| #D029 | | Casting | Casting of nonferrous metals is included in the NFMF category when it is performed as an integral part of the nonferrous metals forming process and located at the same plant site at which nonferrous metals are formed. | high |