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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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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)
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
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
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
Place where geological material has been excavated
February 2026. "Mineral Mining and Processing Effluent Guidelines". epa.gov. US EPA. 10 March 2014. Retrieved 30 June 2020. Alfred J. Andrea; Kevin McGeough;
Quarry
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
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
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
Dynamic preparation methods generate a calibration mixture continuously by combining controlled flows of gases or vapours. These methods may be used when
Calibration_gas
coating material that passes U.S. Environmental Protection Agency-specified (EPA) ASTM (American Society for Testing Materials) tests is applied over a surface
Encasement
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
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
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
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
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
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
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
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
Bacteria measuring fecal water contamination
found in oral and gut contents. The US Environmental Protection Agency (EPA) lists the following criteria for an organism to be an ideal indicator of
Indicator_bacteria
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
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
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
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
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
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
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
Superfund site in New Jersey, United States
such as Allaire State Park. Following a Hazard Ranking System report, the EPA placed the site on the National Priorities List in September 1983. Cleanup
Bog_Creek_Farm_Superfund_site
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
Country primarily in North America
URL status unknown (link) US EPA, OAR (December 2024). "A Closer Look: Temperature and Drought in the Southwest". www.epa.gov. Archived from the original
United_States
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
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
(GLP) a lab quality standard
bodies. Note, unlike many countries, the US EPA names its mandated use of the OECD TG, ‘the EPA Test Methods’. Clinical Laboratory Improvement Amendments
Good_laboratory_practice
US law about pesticides
public health uses. The EPA is also required to provide maintenance fee waivers to and encourage the safe and necessary use of methods/pesticides that either
Food_Quality_Protection_Act
2009 United States Supreme Court case
States Supreme Court that reviewed the Environmental Protection Agency's (EPA) interpretation of the Clean Water Act regulations with regard to cooling
Entergy Corp. v. Riverkeeper Inc.
Entergy_Corp._v._Riverkeeper_Inc.
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
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
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
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
Control of harmful species
Simply adding Boron or an EPA-registered pesticide to an insulation does not qualify it as a pesticide. The dosage and method must be carefully controlled
Pest_control
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
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)
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
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
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
American multinational food company
States Environmental Protection Agency (EPA) also does not have health and safety data. This is despite the EPA having sought information on it from the
Kellogg's
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
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
US EPA program and certification
the U.S. Environmental Protection Agency (EPA) in partnership with the U.S. Department of Energy (DOE). The EPA establishes energy efficiency specifications
Energy_Star
Storage tank that is partially or fully underground
Underground Storage Tanks, calling on the U.S. Environmental Protection Agency (EPA) to regulate the tanks. In 1985, when it was launched, there were more than
Underground_storage_tank
2023 disaster in Ohio, United States
Environmental Protection Agency (EPA) and Norfolk Southern began monitoring air quality on February 3. According to the EPA, humans can smell butyl acrylate
East Palestine, Ohio, train derailment
East_Palestine,_Ohio,_train_derailment
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
Exposing of scandalous activity
legislate as to what constitutes a protected disclosure, and the permissible methods of presenting a disclosure. Whistleblowing can occur in the private sector
Whistleblowing
Burial methods
collect on the policy. Criminal methods encountered in fiction and actual cases include: Illegal use of conventional methods, commonly burial in a place unlikely
Disposal_of_human_corpses
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
EPA METHODS
EPA METHODS
Female
Welsh
 Welsh form of Greek Eva, EFA means "life." Compare with another form of Efa.
Girl/Female
Indian
In Hindi Yug, Earth, Muse
Female
Polish
Hawaiian and Polish form of Greek Eva, EWA means "life."
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
Male
Finnish
Finnish form of Greek Esaias, ESA means "God is salvation."
Female
Polish
 Pet form of Polish Elżbieta, ELA means "God is my oath." Compare with another form of Ela.
Female
Hungarian
 Hungarian form of Norman French Emma, EMA means "entire, whole." Compare with other forms of Ema.
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
Girl/Female
Indian
The earth, Cardamom tree, Daughter of Manu
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
Slovene
 Slovene form of English Emily, EMA means "rival." Compare with other forms of Ema.
Female
Hawaiian
 Hawaiian form of Norman French Emma, EMA means "entire, whole." Compare with other forms of Ema.
Female
Polish
Feminine form of Polish Bożydar, BOŻENA means "divine gift."
Female
English
Medieval pet form of English Edith, EDA means "rich battle."
Female
Hebrew
(עֵיפָה) Variant spelling of Hebrew unisex Efah, EFA means "darkness" or "gloomy." Compare with another form of Efa.
Male
Hebrew
(עֵיפָה) Variant spelling of Hebrew unisex Efah, EFA means "darkness" or "gloomy."Â
Girl/Female
Indian
Matchless, Alone, Unique, Goddess Durga
Female
Egyptian
, Si-en-ea.
EPA METHODS
EPA METHODS
Girl/Female
Australian, British, Danish, English, Finnish, German, Swedish
One who has Gone Before; Powerful in Battle
Female
Ukrainian
, peace.
Boy/Male
Indian, Punjabi, Sikh
Glory of the Lord
Girl/Female
Gujarati, Hindu, Indian, Marathi
Jewelry; The Beautiful
Male
Serbian
(Ðенад) Serbian name, possibly NENAD means "unexpected."
Boy/Male
Biblical
Right hand; numbering; preparing.
Female
Egyptian
, an Egyptian lady.
Girl/Female
Indian
Circumstance, Period of life, Wick, Condition, Degree
Boy/Male
Hindu
Of extra ordinary size
Boy/Male
Tamil
Dharmaveer | தரà¯à®®à®µà¯€à®°
Protector of religion
EPA METHODS
EPA METHODS
EPA METHODS
EPA METHODS
EPA METHODS
pl.
of Era
n.
Alt. of Epha
n.
The chick-pea.
n.
See 1st 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.
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.
The Tertiary era, period, or formation.
n.
The glory pea. See under Glory.
n.
See Spa.
pl.
of Pea
n.
A pea.
n.
The chick-pea.
n.
A pea.
n.
A plural form of Pea. See the Note under Pea.
a.
Designating, or applied to the Era of man; as, the psychozoic era.