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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
Class of perfluorinated chemical compounds
precursor assay, and other methods in development. For the determination of AOF in water samples, the standards EPA Method 1621 and ISO 18127 were developed
PFAS
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
Contamination of water bodies
Protection Agency (EPA). August 1999. EPA-821-R-99-012. Protecting Water Quality from Urban Runoff (Report). EPA. February 2003. EPA 841-F-03-003. Archived
Water_pollution
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
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
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
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
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 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
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
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
2007 United States Supreme Court case
James Milkey, brought suit against the Environmental Protection Agency (EPA) represented by Gregory G. Garre to force the federal agency to regulate
Massachusetts_v._EPA
Water safe for consumption
many countries.The U.S. Environmental Protection Agency (EPA) has published laboratory test methods for PFAS compounds. Drinking water quality standards describes
Drinking_water
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
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
Units used in toxicology
Research Council (US) Committee on Methods for the In Vivo Toxicity Testing of Complex Mixtures (1998). Complex Mixtures: Methods for In Vivo Toxicity Testing
Toxic_unit
Terpene hydrocarbon
Scientific & Technical. pp. 308–309. ISBN 0-582-06009-5. "Limonene" (PDF). EPA.gov. United States Environmental Protection Agency. September 1994. Archived
Limonene
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
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
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 South Carolina
List_of_Superfund_sites_in_South_Carolina
assessment program operated by the U.S. Environmental Protection Agency (EPA). The IRIS program focuses on risk assessment, not risk management (those
Integrated risk information system
Integrated_risk_information_system
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
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
Place where geological material has been excavated
epiroc.com. Retrieved 2026-02-06. US EPA, OW (2014-03-10). "Mineral Mining and Processing Effluent Guidelines". US EPA. Retrieved 2020-06-30. Alfred J. Andrea;
Quarry
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
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
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 which reduces air pollution from diesel engines
Canada. The 2007 EPA regulations were meant to be an interim solution to allow manufacturers time to prepare for the more stringent 2010 EPA regulations,
Diesel_exhaust_fluid
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
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
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
Chemical database
database created and maintained by the U.S. Environmental Protection Agency (EPA). The database provides access to multiple types of data including physicochemical
CompTox_Chemicals_Dashboard
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
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
Reduction of lead, particularly in homes
it is recommended by the US EPA that more than two dust and soil samples are taken. Remediation technologies and methods for lead contaminated soils include
Lead_abatement
Fracturing bedrock by pressurized liquid
unconventional, meaning that it requires special methods to extract the resource. Above that value, conventional methods suffice. Unconventional resources are also
Fracking
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
Underground pipe for transporting sewage
(Report). Washington, D.C.: U.S. Environmental Protection Agency (EPA). August 2004. p. ES-2. EPA-833-R-04-001. Metcalf & Eddy, Inc. (1972). Wastewater Engineering:
Sanitary_sewer
Rainfall-runoff-subsurface runoff simulation model
The United States Environmental Protection Agency (EPA) Storm Water Management Model (SWMM) is a dynamic rainfall–runoff–subsurface runoff simulation
Storm_Water_Management_Model
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)
Boron compound, a salt of boric acid
to the low toxicity of borax, as reported in two EPA documents relating to boric acid and borax. EPA has determined that, because they are of low toxicity
Borax
Water distribution system modeling software
package developed by the United States Environmental Protection Agency's (EPA) Water Supply and Water Resources Division. It performs extended-period simulation
EPANET
Type of American intensive animal farming
(CWA). EPA's 2008 rule specifies that "large CAFOs are automatically subject to EPA regulation; medium CAFOs must also meet one of two 'method of discharge'
Concentrated animal feeding operation
Concentrated_animal_feeding_operation
tracking waste. Through RCRA, Congress directed EPA to issue regulations for the management of hazardous waste. EPA developed strict requirements for all aspects
Hazardous waste in the United States
Hazardous_waste_in_the_United_States
through EPA's geocoding process, which uses rooftop and map interpolation methods to derive a latitude and longitude with the appropriate method, accuracy
Facility_Registry_System
Coal plant disposal structure
Implementation". EPA. 2026-02-24. Daly, Matthew (2022-01-11). "EPA moves to crack down on dangerous coal ash storage ponds". The Washington Post. "EPA Takes Key
Ash_pond
Agency (EPA). The goal of SIPs is to demonstrate that a state can implement the changes necessary to meet new NAAQSs and to identify the primary methods that
Non-attainment_area
Emission Factors is a compilation of the US Environmental Protection Agency (EPA)'s emission factor information on air pollution, first published in 1968
AP 42 Compilation of Air Pollutant Emission Factors
AP_42_Compilation_of_Air_Pollutant_Emission_Factors
Organic chemicals having 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
Publication of the American Chemical Society (ACS) Committee on Analytical Reagents
and test methods in scientific journals. At this point, analytical methods were primarily what we now consider to be “Classical Wet Methods". 1950: The
Reagent_Chemicals
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
Equivalent Methods" (PDF). www3.epa.gov. Retrieved 26 September 2017. "About the National Exposure Research Laboratory (NERL)". About EPA, About the National
National Exposure Research Laboratory
National_Exposure_Research_Laboratory
Substance used to control pests
and methods of interfering with insect breeding. Application of composted yard waste has also been used as a way of controlling pests. These methods are
Pesticide
smaller facilities. The EPA makes available software that employs the Waste Reduction Algorithm. They use the acronym WAR for this method and state "the goal
Pollution prevention in the United States
Pollution_prevention_in_the_United_States
administered by the Environmental Protection Agency (EPA). The SIP, developed by a state agency and approved by EPA, consists of narrative, rules, technical documentation
State_Implementation_Plan
Reducing radon gas levels in buildings
outdoors, away from windows and other building openings. "EPA generally recommends methods which prevent the entry of radon. Soil suction, for example
Radon_mitigation
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
The United States Environmental Protection Agency (EPA) was established in July 1970 when the White House and the United States Congress came together
EPA_Sustainability
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
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
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
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
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
Chemical compound
Environmental Protection Agency (EPA). Copper naphthenate has been registered with EPA since October 29, 1951. The EPA PC code for copper naphthenate is
Copper_naphthenate
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
River known for its pollution in northeastern New Jersey, United States
discharges. In 1970 the newly-established U.S. Environmental Protection Agency (EPA) also began tests of the plant wastewater, and found there were daily discharges
Berry's_Creek
Type of waste consisting of everyday items discarded by the public
1016/j.apenergy.2020.115265. ISSN 0306-2619. US EPA, ORD (26 March 2015). "Research Grants". US EPA. U.S. EPA Letter to Maria Zannes, President, Integrated
Municipal_solid_waste
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
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
Norms of environmental good practice which must be observed by business entities
and Equivalent Methods Used to Measure National Ambient Air Quality Standards (NAAQS) Criteria Air Pollutants - Volume I". cfpub.epa.gov. Archived from
Environmental_standard
By-products of coal combustion
each based on physical and chemical forms derived from coal combustion methods and emission controls: Fly ash is captured after coal combustion by filters
Coal_combustion_products
Formula to estimate a chemical's chronic toxicity
advanced statistical methods, and uniformity in using these methods by regulators has been made apparent in literature. Scientific methods for determining
Acute_to_chronic_ratio
Political party in the United States
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)
Chromatography process
EPA used Method 3810 (1986), which before that was Method 5020. However, Method 3810 is still used by some laboratories. Other headspace GC methods include:
Headspace_gas_chromatography
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
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
Concept in design and manufacturing
new machines. In 1995, the United States Environmental Protection Agency (EPA) implemented the Comprehensive Procurement Guideline (CPG) program to promote
Remanufacturing
Systemic herbicide and crop desiccant
a 1993 review, the EPA, considered glyphosate to be noncarcinogenic and relatively low in dermal and oral acute toxicity. The EPA considered a "worst
Glyphosate
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
Measure of air pollution
to Part 50—Reference Method for the Determination of Suspended Particulate Matter in the Atmosphere (High-Volume Method)". US EPA. 2023-06-29. Retrieved
Air_quality_index
Regulation under 1963 US federal law
to the atmosphere endanger the public. The Act includes a requirement for EPA Administrators to issue rules to set (and from time to time revise) standards
Regulation of greenhouse gases under the Clean Air Act
Regulation_of_greenhouse_gases_under_the_Clean_Air_Act
EPA METHODS
EPA METHODS
Female
Welsh
 Welsh form of Greek Eva, EFA means "life." Compare with another form of Efa.
Girl/Female
Indian
The earth, Cardamom tree, Daughter of Manu
Female
Egyptian
, Si-en-ea.
Female
Polish
Hawaiian and Polish form of Greek Eva, EWA means "life."
Female
English
Medieval pet form of English Edith, EDA means "rich battle."
Female
Polish
Feminine form of Polish Bożydar, BOŻENA means "divine gift."
Female
Polish
 Pet form of Polish Elżbieta, ELA means "God is my oath." Compare with another form of Ela.
Male
Hebrew
(עֵיפָה) Variant spelling of Hebrew unisex Efah, EFA means "darkness" or "gloomy."Â
Female
Slovene
 Slovene form of English Emily, EMA means "rival." Compare with other forms of Ema.
Female
Greek
(Εὔα) Greek form of Hebrew Chavvah, EVA means "life." In the bible, this is the name of the first woman, the mother of the entire human family. Compare with another form of Eva.
Female
Hawaiian
 Hawaiian form of Norman French Emma, EMA means "entire, whole." Compare with other forms of Ema.
Girl/Female
Indian
In Hindi Yug, Earth, Muse
Girl/Female
Indian
Matchless, Alone, Unique, Goddess Durga
Male
Finnish
Finnish form of Greek Esaias, ESA means "God is salvation."
Female
English
Anglicized form of Irish Gaelic Eithne, ENA means "kernel."
Girl/Female
Indian
Life, Living one, Variant of eve, In the bible eve was adams wife and the first woman
Female
Hebrew
 Variant spelling of Hebrew Eila, ELA means "oak tree, terebinth tree." Compare with another form of Ela.
Female
Slovene
Feminine form of Slovene Jožef, JOŽEFA means "(God) shall add (another son)."Â
Female
Hebrew
(עֵיפָה) Variant spelling of Hebrew unisex Efah, EFA means "darkness" or "gloomy." Compare with another form of Efa.
Female
Hungarian
 Hungarian form of Norman French Emma, EMA means "entire, whole." Compare with other forms of Ema.
EPA METHODS
EPA METHODS
Biblical
a drunkard; that turns
Girl/Female
Tamil
Auspicious, Before morning
Girl/Female
British, English, Portuguese, Spanish
Strong
Girl/Female
Hindu
Possessing the power to kill all the demons
Girl/Female
Hindu, Indian, Sanskrit
Shy; Good Time; Lucky Time
Girl/Female
Hindu
Male
French
Old form of French Hugues, HUGON means "heart," "mind," or "spirit."
Boy/Male
American, Australian, Chinese, French, Japanese, Latin, Portuguese, Spanish
Saint James; Supplanter; Saint Iago
Boy/Male
American, Anglo, British, English
Lives at the Farmstead; Place Name
Boy/Male
Assamese, Bengali, Hindu, Indian, Jain, Kannada, Sanskrit, Telugu
Destroyer of Enemies
EPA METHODS
EPA METHODS
EPA METHODS
EPA METHODS
EPA METHODS
n.
The glory pea. See under Glory.
n.
A Small leguminous plant (Cicer arietinum) of Asia, Africa, and the south of Europe; the chich; the dwarf pea; the gram.
pl.
of Pea
n.
See Spa.
pl.
of Era
n.
Alt. of Epha
n.
A plural form of Pea. See the Note under Pea.
pl.
of Pea
n.
A period of time reckoned from some particular date or epoch; a succession of years dating from some important event; as, the era of Alexander; the era of Christ, or the Christian era (see under Christian).
n.
See 1st Pea.
n.
The Tertiary era, period, or formation.
n.
The chick-pea.
a.
Designating, or applied to the Era of man; as, the psychozoic era.
n.
The chick-pea.
n.
A pea.
n.
A pea.