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methods in the Agency index are known as EPA Methods. There are other types of methods such as the ASTM and United States Pharmacopeia, but the EPA Methods
EPA_Methods
analytical methods approved by the United States Environmental Protection Agency (EPA) for measuring mercury in wastewater are in common use. EPA Methods 245
Cold vapour atomic fluorescence spectroscopy
Cold_vapour_atomic_fluorescence_spectroscopy
U.S. federal government agency
The Environmental Protection Agency (EPA) is an independent agency of the United States government tasked with environmental protection matters. President
United States Environmental Protection Agency
United_States_Environmental_Protection_Agency
Procedure that produces a test result
materials Data analysis Design of experiments Document management system EPA Methods Integrated test facility Measurement systems analysis Measurement uncertainty
Test_method
calculational methods are referred to as source terms, and this article on accidental release source terms explains some of the calculation methods used for
Accidental release source terms
Accidental_release_source_terms
Class of perfluorinated chemical compounds
limits for PFOA and PFOS set by the US EPA (4 parts-per-trillion) are limited by the capability of targeted methods to detect low-level concentrations. Non-targeted
PFAS
Measurement in environmental chemistry
sugars. The two principal methods of measuring total dissolved solids are gravimetric analysis and conductivity. Gravimetric methods are the most accurate
Total_dissolved_solids
Scale for measuring the opacity of smoke
S2CID 20228225. Randolph, Karen; et al. (December 1993). "EPA 340/l -92-004 Visible Emissions Field Manual EPA Methods 9 and 22" (PDF). United States Environmental
Ringelmann_scale
Chemical compound
the odor peculiar to burnt cooking grease. More modern methods exist. In the US, EPA methods 603 and 624.1 are designed to measure acrolein in industrial
Acrolein
Soil sample extraction method
liquid, solid, and multiphasic wastes. According to the U.S. EPA, "This method is an SW-846 Method-Defined Parameter (MDP), meaning that it may not be modified
Toxicity characteristic leaching procedure
Toxicity_characteristic_leaching_procedure
Scientific device
convenient" by EPA (Environmental Protection Agency) Method 405.1. However, EPA Method 405.1 was written in 1974 and is no longer an EPA-approved method per 40CFR
BOD_bottle
Application of statistical methods to environmental science
Environmental statistics is a branch of statistics that uses statistical methods to study environmental issues, including those concerning natural ecosystems
Environmental_statistics
Military fuel storage facility in Hawaii
samples every quarter to certified independent laboratories that use EPA methods to analyze for contamination.[citation needed] The newest groundwater
Red Hill Underground Fuel Storage Facility
Red_Hill_Underground_Fuel_Storage_Facility
Surfaces with antimicrobial copper coatings
Method for efficiency of Copper Alloy Surfaces as a Sanitizer", EPA "Test Method for Residual Self-Sanitizing Activity of Copper Alloy Surfaces", EPA
Antimicrobial copper-alloy touch surfaces
Antimicrobial_copper-alloy_touch_surfaces
Scientific study
contamination. "Clean Water Act Analytical Methods". EPA. 2022-07-27. "Hazardous Waste Test Methods / SW-846". EPA. 2022-06-15. Eaton, Andrew D.; Greenberg
Environmental_chemistry
US EPA limits on certain air pollutants
hazards. Established by the United States Environmental Protection Agency (EPA) under authority of the Clean Air Act (42 U.S.C. 7401 et seq.), NAAQS is
National Ambient Air Quality Standards
National_Ambient_Air_Quality_Standards
Types of bacteria found in feces
coliforms of non-fecal origin are not commonly encountered. EPA has approved a number of different methods to analyze samples for bacteria. Bacteria reproduce
Fecal_coliform
Electric hatchback marketed by Chevrolet
(19 kWh/100 km) in highway. The Bolt EV has a combined EPA-rated range of 238 miles (383 km). For city driving, the EPA rated the Bolt range at 255 miles (410 km)
Chevrolet_Bolt
Fuel economy standards in the U.S.
(NHTSA) regulates CAFE standards and the U.S. Environmental Protection Agency (EPA) measures vehicle fuel efficiency. Congress specifies that CAFE standards
Corporate average fuel economy
Corporate_average_fuel_economy
Cloudiness of a fluid
test methods for turbidity include: ISO 7027 "Water Quality: Determination of Turbidity" US EPA Method No. 180.1, "Turbidity" "Standard Methods", No.
Turbidity
American businesswoman (born 1984)
2010s after it claimed to have revolutionized blood testing by developing methods that needed only very small volumes of blood, such as from a fingerprick
Elizabeth_Holmes
Automated analyzer using a flow technique
(SMAC, 1974). The Autoanalyzer II (AAII) is the instrument that most EPA methods were written on and reference.[citation needed] The AAII is a second
AutoAnalyzer
Test for the flash point of flammable liquids
Protection Agency (EPA) has also published Method 1010A: Test Methods for Flash Point by Pensky-Martens Closed Cup Tester, part of Test Methods for Evaluating
Pensky–Martens closed-cup test
Pensky–Martens_closed-cup_test
Foam used for fire suppression
μg/liter PFAS according to the U.S. Environmental Protection Agency (EPA) Method 1633. Other alternatives to AFFF include high expansion foam, trench
Firefighting_foam
Class of polyunsaturated fatty acids
(ALA), eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA). ALA is found in some land plants, while DHA and EPA are found in algae and fish. Marine
Omega−3_fatty_acid
US federal program
(CERCLA). The program is administered by the Environmental Protection Agency (EPA) and is designed to pay for investigating and cleaning up sites contaminated
Superfund
American lawyer and politician (born 1968)
served as the 14th Administrator of the Environmental Protection Agency (EPA) from February 17, 2017, to July 9, 2018, during the Donald Trump presidency
Scott_Pruitt
Compact car produced by American Motors Corporation
The EPA results noted the same fuel economy in actual on-the-road driving because in-use mileage depends on many factors. Nevertheless, the EPA method can
AMC_Pacer
Assessment against standards for use
December 2018. "Whole Effluent Toxicity Methods". Clean Water Act Analytical Methods. EPA. 1 August 2020. Methods for Measuring the Acute Toxicity of Effluents
Water_quality
Use of insecticide on aircraft for insect and disease control
health, agriculture or environment." With regards to EPA approval of certain products, the EPA currently does not have any products approved for aircraft
Aircraft_disinsection
Procedures used to analyze water quality
as nitrates or arsenic. EPA publishes test methods for contaminants that it regulates under the SDWA. Peer-reviewed test methods have been published by
Water_testing
law of 1980 authorized the United States Environmental Protection Agency (EPA) to create a list of polluted locations requiring a long-term response to
List of Superfund sites in Ohio
List_of_Superfund_sites_in_Ohio
Chemical compound
commercial source, from which it is obtained commercially by two primary methods: centrifugal separation and steam distillation. d-Limonene is used as a
Limonene
separately. As per EPA guidelines industrial waste management units have to consider waste characterization and minimization methods, waste constituent
Solid waste policy of the United States
Solid_waste_policy_of_the_United_States
American attorney (born 1964)
served as the 15th administrator of the Environmental Protection Agency (EPA) from 2019 to 2021. He served as the deputy administrator from April to July
Andrew_R._Wheeler
2007 United States Supreme Court case
Clean Air Act, the EPA was required by law to regulate "any air pollutant" which could "endanger public health or welfare." The EPA disagreed, claiming
Massachusetts_v._EPA
S. EPA methods have been developed to utilise qPCR to characterise indoor environment for fungal spores. In a study by Lange et al., FISH method successfully
Indoor_bioaerosol
1972 U.S. federal law regulating water pollution
Analytical Methods". EPA. 2022-04-28. "Other Clean Water Act Test Methods: Chemical". EPA. 2021-10-21. "Other Clean Water Act Test Methods: Microbiological"
Clean_Water_Act
Carbon dioxide above its critical point
chroma.2007.02.046. hdl:10261/12445. PMID 17353022. "Test Methods | Wastes - Hazardous Waste | US EPA". wayback.archive-it.org. Archived from the original
Supercritical_carbon_dioxide
Concentration of organic carbon in a sample
water. Recently published analytical methods, such as United States Environmental Protection Agency (EPA) method 415.3, support the Agency's Disinfectants
Total_organic_carbon
Contamination of water bodies
be analysed through several broad categories of methods: physical, chemical and biological. Some methods may be conducted in situ, without sampling, such
Water_pollution
Ghost town in Missouri, United States
California passed through the community on its southern end. In 2001, the EPA removed Times Beach from its Superfund list. Times Beach was founded in 1925
Times_Beach,_Missouri
Coal plant disposal structure
directed EPA to study the coal-ash problem and decide whether further regulation would be appropriate. Pursuant to the Congressional directive, EPA reported
Ash_pond
1973-1974 US environmental legislation
officials about health effects, methods for chemical analysis, and treatment methods. The advisories are not enforceable. EPA was given explicit authority
Safe_Drinking_Water_Act
Protection Agency (EPA) as an alternative method for satisfying its aromaticity requirement for diesel fuel. D4737 is the newest method and is sometimes
Cetane_index
Method of analysing water
specific culture methods or molecular biology. The most reliable methods are direct plate count method and membrane filtration method. mEndo Agar is used
Bacteriological water analysis
Bacteriological_water_analysis
Soft ionization source
mass spectrometry of liquids, 1986-02-24, retrieved 2018-04-05 EPA, ORD, US. "EPA Method 8321B (SW-846): Solvent-Extractable Nonvolatile Compounds by High
Thermospray
Contaminated area in Oklahoma, US
"wet" methods were used by mining companies to extract pure lead from ore. Dry methods produced chat piles, large mounds of mining waste. Wet methods required
Tar_Creek_Superfund_site
US EPA program and certification
by the U.S. Environmental Protection Agency (EPA) in 1992. The program is jointly administered by the EPA and the U.S. Department of Energy (DOE). In March
Energy_Star
Solution containing little to no analyte of interest
usually used to calibrate instruments such as a colorimeter. According to the EPA, the "primary purpose of blanks is to trace sources of artificially introduced
Blank_(solution)
Political party
2014. Davenport, Coral (November 10, 2014). "Republicans Vow to Fight E.P.A. and Approve Keystone Pipeline". The New York Times. Archived from the original
Republican Party (United States)
Republican_Party_(United_States)
summarize the results of these studies. EPA publicly releases assessment protocols which presents the methods for conducting the systematic review. These
Integrated risk information system
Integrated_risk_information_system
Carcinogenic fibrous silicate mineral
completed although other methods can be used if they can demonstrate they have met the regulations by other means. The EPA includes some, but not all
Asbestos
Initiative to increase government efficiency
application of Lean Manufacturing (also known as "Lean") principles and methods to both identify and then implement the most efficient, value added way
Lean_government
1963 US federal law to control pollution
2009. "Regulatory Announcement: EPA Issues New Test Methods for Fuel Economy Window Stickers". EPA. December 2006. EPA 420-F-06-069. Fact sheet. Archived
Clean_Air_Act_(United_States)
Study of manufactured products on aquatic organisms
Toxicity Test Methods, Vol 1 (Report). Washington, DC: U.S. Environmental Protection Agency (EPA). September 2001. EPA 821-B-01-004. "Methods for Measuring
Aquatic_toxicology
2004 United States Supreme Court case
Alaska Dept. of Environmental Conservation v. EPA, 540 U.S. 461 (2004), is a US Supreme Court case clarifying the scope of state environmental regulators
Alaska Department of Environmental Conservation v. EPA
Alaska_Department_of_Environmental_Conservation_v._EPA
2010s diesel emissions scandal involving Volkswagen
September 2015, when the United States Environmental Protection Agency (EPA) issued a notice of violation of the Clean Air Act to German automaker Volkswagen
Volkswagen_emissions_scandal
Chemical with a high vapor pressure at room temperature
Other methods have used proprietary Silcosteel-coated canisters with constant flow inlets to collect samples over several days. These methods are not
Volatile_organic_compound
2001 terror attacks in the United States
Protection Agency (EPA) to issue reassuring statements regarding air quality in the aftermath of the attacks, citing national security, but the EPA did not determine
September_11_attacks
Type of American intensive animal farming
permitting process is divided into two main methods based on a state's authorization status. As of 2018, EPA has authorized 47 states to issue NPDES permits
Concentrated animal feeding operation
Concentrated_animal_feeding_operation
Country primarily in North America
Retrieved June 9, 2025. US EPA, OAR (December 2024). "A Closer Look: Temperature and Drought in the Southwest". www.epa.gov. Archived from the original
United_States
Chemical compound
reacting with sodium hydroxide (eq. 6). Its pH in water is 6.9 measured by EPA method SW846-9045. Basic zinc chloride can be prepared by hydrolysis of a ZnCl2
Zinc chloride hydroxide monohydrate
Zinc_chloride_hydroxide_monohydrate
Unwanted or unusable materials
www.epa.gov. Retrieved 2022-11-24. US EPA, OITA (2014-03-18). "Cleaning Up Electronic Waste (E-Waste)". www.epa.gov. Retrieved 2022-11-24. US EPA, OLEM
Waste
American serial killer (1946–1989)
Machine references Bundy The song "Blow" by Tyler, The Creator The song "epaR" by Earl Sweatshirt and Vince Staples references Bundy The song "Ted Bundy"
Ted_Bundy
Most populous city in California, US
churches, schools, and hospitals in the city, a situation about which the EPA has voiced serious concerns. The 2020 U.S. census reported Los Angeles had
Los_Angeles
Dynamic preparation methods generate a calibration mixture continuously by combining controlled flows of gases or vapours. These methods may be used when
Calibration_gas
successful programs the EPA utilizes is the "Green Building" program. Green Building is the practice of building structures and using methods that are environmentally
EPA_Sustainability
Conspiracy theory about contrails
the rumors was published in 2000 by the Environmental Protection Agency (EPA), the Federal Aviation Administration (FAA), the National Aeronautics and
Chemtrail_conspiracy_theory
Quality parameters set for drinking water
and also specify the sampling location, sampling methods, sampling frequency, analytical methods, and laboratory accreditation (AQC). In addition, a
Drinking water quality standards
Drinking_water_quality_standards
Public health crisis in Flint, Michigan
interim, the EPA and MDEQ engaged in a dispute on how to interpret the Lead and Copper Rule. According to EPA administrator Susan Hedman, the EPA pushed to
Flint_water_crisis
Electric convertible sports car (2008–2012)
qualified for government incentives in several nations. According to the U.S. EPA, the Roadster can travel 244 miles (393 km) on a single charge of its lithium-ion
Tesla Roadster (first generation)
Tesla_Roadster_(first_generation)
United States standards for wastewater discharges
approved analytical testing methods. EPA has published many methods in its regulations, and has approved the use of other methods published by peer-reviewed
Effluent_guidelines
contaminant). In 2012, the EPA released a "Citizens Guide to Vapor Intrusion", where different mitigation methods are explained. Two methods in particular are
Vapor_intrusion
U.S. presidential administration since 2025
would force EPA to reinstate $3bn climate program". The Guardian. ISSN 0261-3077. Retrieved July 29, 2026. Alfred, Mark (July 22, 2026). "EPA Must Fund
Second presidency of Donald Trump
Second_presidency_of_Donald_Trump
Water safe for consumption
PMID 34695467. S2CID 239494337. "EPA PFAS Drinking Water Laboratory Methods". Washington, D.C.: U.S. Environmental Protection Agency (EPA). 24 April 2025. Archived
Drinking_water
US presidential directive
presidential directive establishing the Environmental Protection Agency (EPA), effective December 2, 1970. The order, published in the Federal Register
Reorganization Plan No. 3 of 1970
Reorganization_Plan_No._3_of_1970
Producing special gas mixtures to specification
regulatory/standard methods include zero/span checks, linearity and drift tests to verify performance before and after runs (e.g., EPA Methods 3A, 7E, 25A for
Gas_blending
Highest court of jurisdiction in the U.S.
Jackson Women's Health Organization), climate change (Massachusetts v. EPA), same-sex marriage (United States v. Windsor and Obergefell v. Hodges),
Supreme Court of the United States
Supreme_Court_of_the_United_States
Occupational Licensing Regulation for HVAC Technicians in the United States
Conditioning" (PDF). EPA. EPA 430-F-18-001. "§ 82.156 Proper evacuation of refrigerant from appliances". eCFR. EPA. "§ 82.152 Definitions". eCFR. EPA. "§ 82.166
Section_608
Lauria) - A mob boss running a crystal meth operation, while using harsh methods to groom his young son for the family affairs and to undertake his criminal
List of Walker, Texas Ranger episodes
List_of_Walker,_Texas_Ranger_episodes
Medication
alcohol to a greater extent. A method pioneered by scientist John David Sinclair (dubbed commercially the "Sinclair Method") in the 1980s advocates "pharmacological
Naltrexone
Chemical compound
paratacamite depends on the nature of reaction medium. US EPA, OLEM (8 December 2015). "SW-846 Test Method 9045D: Soil and Waste pH". United States Environmental
Dicopper chloride trihydroxide
Dicopper_chloride_trihydroxide
American multinational technology company
removal. In June 2024, the United States Environmental Protection Agency (EPA) published a report about an electronic computer manufacturing facility leased
Apple_Inc.
Chemical compound
DuPont settled with the United States Environmental Protection Agency (EPA) in response to reports of damage to trees after application of Imprelis
Aminocyclopyrachlor
Conservative political initiative in the United States
Demonstrations. Project 2025 advocates downsizing the EPA. In particular, it seeks to close the EPA's Office of Environmental Justice and External Civil
Project_2025
Human-caused changes to climate on Earth
permafrost temperature (very high confidence)." IPCC AR6 WG1 Ch11 2021, p. 1517 EPA (19 January 2017). "Climate Impacts on Ecosystems". Archived from the original
Climate_change
American multinational technology conglomerate
building a big plant in Iceland". CNBC. Retrieved November 27, 2022. US EPA, OAR (May 14, 2021). "Green Power Leadership Awardees". United States Environmental
Microsoft
U.S. state
2016. Retrieved September 27, 2022. Fountain, Henry (January 31, 2023). "E.P.A. Blocks Long-Disputed Mine Project in Alaska". The New York Times. Archived
Alaska
Milkweed butterfly in the family Nymphalidae
filed a suit against the United States Environmental Protection Agency (EPA). The Council argued that the agency ignored warnings about the dangers of
Monarch_butterfly
Country in South America
"Paraguayos en España. Padrón municipal 2021, cifras de población". epa.com.es (in Spanish). EPA España. 1 January 2021. Archived from the original on 30 December
Paraguay
Chromium in the +6 oxidation state
chromium(VI) specific monitoring program that makes use of the U.S. EPA-approved methods. Cambridge Plating Company, now known as Purecoat North, was an electroplating
Hexavalent_chromium
American electric vehicle and clean energy company
rear-wheel drive, dual-motor all-wheel drive, and trimotor all-wheel drive, with EPA range estimates of 320–340 miles (510–550 km), depending on the model. The
Tesla,_Inc.
History of a type of paint
related issues have been issued by the Environmental Protection Agency (EPA). Much of the government's response to the lead public health problems in
Lead-based paint in the United States
Lead-based_paint_in_the_United_States
Resource Conservation Recovery Act (RCRA) and industry codes outside the EPA may also require secondary containment for various chemical substances or
Secondary_spill_containment
coating material that passes U.S. Environmental Protection Agency-specified (EPA) ASTM (American Society for Testing Materials) tests is applied over a surface
Encasement
Filtering method
Citizen's Guide to Activated Carbon Treatment. Document no. EPA 542-F-01-020" (PDF). EPA. 2001. Archived from the original (PDF) on 2010-04-02. "Residential
Carbon_filtering
Type of cleaning methods and products
Environmental Protection Agency's (EPA) Design for the Environment program which labels products that meet the EPA's criteria for chemicals. These products
Green_cleaning
Monoamine neurotransmitter
(October 1953). "Serotonin content of some mammalian tissues and urine and a method for its determination". The American Journal of Physiology. 175 (1): 157–161
Serotonin
Interior fungal growth
original on May 7, 2021. Retrieved May 17, 2021. "Whole Effluent Toxicity Methods". EPA. September 2015. Retrieved January 29, 2025. "Chapter 6 – Containment
Indoor_mold
travel, tourism, insurance
EPA METHODS
EPA METHODS
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EPA METHODS
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EPA METHODS
travel, tourism, insurance