SEPA
United States
Environmental Protection
Agency
Technical Fact Sheet-
Perchlorate
January 2014
TECHNICAL FACT SHEET - PERCHLORATE
Introduction
This fact sheet, developed by the U.S. Environmental Protection Agency
(EPA) Federal Facilities Restoration and Reuse Office (FFRRO),
provides a summary of the contaminant perchlorate, including physical
and chemical properties; environmental and health impacts; existing
federal and state guidelines; detection and treatment methods; and
additional sources of information. This fact sheet provides basic
information on perchlorate to site managers and other field personnel
who are addressing perchlorate contamination at cleanup sites or in
drinking water supplies.
Perchlorate is a persistent contaminant of concern that has presented a
number of issues to the government, the private sector and other
organizations and interested parties. These issues include health effects
and risks, regulatory standards and cleanup levels, degradation
processes and treatment technologies (EPA FFRRO 2005).
What is perchlorate?	
~	Perchlorate is a naturally occurring and man-made anion that
consists of one chlorine atom bonded to four oxygen atoms (CI04~)
(EPA FFRRO 2005; ITRC 2005).
~	Perchlorate may occur naturally, particularly in arid regions such as
the southwestern United States (Rao and others 2007).
~	Manufactured forms of perchlorate include perchloric acid and salts
such as ammonium perchlorate, sodium perchlorate and potassium
perchlorate (EPA FFRRO 2005; ITRC 2005).
~	Perchlorate is found as a natural impurity in nitrate salts from Chile,
which are imported and used to produce nitrate fertilizers and other
products (EPA FFRRO 2005; ITRC 2005).
~	Perchlorate is commonly used as an oxidizer in solid propellants,
munitions, fireworks, airbag initiators for vehicles, matches and
signal flares (EPA FFRRO 2005; ITRC 2005). It is also used in some
electroplating operations and found in some disinfectants and
herbicides (ATSDR 2008; ITRC 2005).
Disclaimer: The U.S. EPA prepared this fact sheet from publically-available
sources; additional information can be obtained from the source documents. This
fact sheet is not intended to be used as a primary source of information and is not
intended, nor can it be relied upon, to create any rights enforceable by any party
in litigation with the United States. Mention of trade names or commercial
products does not constitute endorsement or recommendation for use.
At a Glance
~	White crystalline solid or colorless
liquid.
~	Both naturally occurring and man-
made anion.
~	Sampling at current federal sites as
well as at Formerly Used Defense
Sites detected perchlorate primarily
in association with sites historically
involved in the manufacture,
maintenance, use and disposal of
ammunition and rocket fuel.
~	Highly soluble in water; migrates
quickly from soil to groundwater.
~	Primary pathways for human
exposure include ingestion of
contaminated food and drinking
water.
~	Short-term exposure to high doses
may cause eye and skin irritation,
coughing, nausea, vomiting and
diarrhea.
~	Health-based goals or drinking
water standards developed by
various states.
~	Various detection methods
available include ion
chromatography, liquid
chromatography, mass
spectroscopy and electrospray
ionization.
~	Common treatment technologies
include ion exchange, bioreactors
and in situ bioremediation.
United States	Office of Solid Waste and	EPA 505-F-14-003
Environmental Protection Agency	Emergency Response (5106P)	January 2014
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Technical Fact Sheet - Perchlorate
What is perchlorate? (continued)
Of the domestically produced (high grade)
perchlorate, 90 percent is manufactured for use
in the defense and aerospace industries,
primarily in the form of ammonium perchlorate
(GAO 2005; ITRC 2005).
Perchlorate has been used by the U.S.
Department of Defense (DoD) as an oxidizer in
munitions and missiles since the 1940s (EPA
FFRRO 2005; ITRC 2005).
Exhibit 1: Physical and Chemical Properties of Perchlorate Compounds
(ATSDR 2008; EPA FFRRO 2005; ITRC 2005; NIH 2013; NIOSH 2013)
Property
Ammonium
Perchlorate
Sodium
Perchlorate
Potassium
Perchlorate
Perchloric Acid
Chemical Abstracts
Service (CAS) Numbers
7790-98-9
7601-89-0
7778-74-7
7601-90-3
Physical Description
(physical state at room
temperature)
White orthorhombic
crystal
White orthorhombic
deliquescent crystal
Colorless
orthorhombic crystal
or white crystalline
powder
Colorless, oily liquid
Molecular weight
(g/mol)
117.49
122.44
138.55
100.47
Water solubility (g/L at
25°C)
200
2,096
15
Miscible in cold water
Melting / Boiling point*
Melting Point: > 200
Melting Point: 471 to
Melting Point: 400 to
Melting Point: -112
(°C)
(Decomposes)
482
525
Boiling Point: 19
Vapor pressure at 25°C
(mm Hg)
Very low
Very low
Very low
6.8
Specific gravity (g/cm3)
1.95
2.52
2.53
1.77
Octanol-water partition
coefficient (log Kow)
-5.84
-7.18
-7.18
-4.63
'Different melting point temperatures are identified in literature.
Abbreviations: g/mol - grams per mole; g/L - grams per liter; °C - degrees Celsius; mm Hg - millimeters of mercury; g/cm3 - grams per cubic
centimeter.
What are the environmental impacts of perchlorate?
Perchlorate is highly soluble in water, and
relatively stable and mobile in surface and
subsurface aqueous systems. As a result,
perchlorate plumes in groundwater can be
extensive. For example, the perchlorate plume at
a former safety flare site (the Olin Flare Facility) in
Morgan Hill, California, extends more than 9 miles
(EPA 2011; ITRC 2005).
Because of their low vapor pressure, perchlorate
compounds and the perchlorate anion do not
volatilize from water or soil surfaces to air (ATSDR
2008; ITRC 2005).
Perchlorate released directly to the atmosphere is
expected to readily settle through wet or dry
deposition (ATSDR 2008).
High concentrations of perchlorate have been
detected primarily at current and Formerly Used
Defense Sites historically involved in the
manufacture, testing and disposal of ammunition
and rocket fuel or at industrial sites where
perchlorate is manufactured or used as a reagent
during operations (ATSDR 2008; ITRC 2005).
Types of military and defense-related facilities with
known releases include missile ranges and missile
and rocket manufacturing facilities. However,
since site-specific documentation may not be
available and based on historical uncertainties, it
is generally difficult to identify specific military sites
with known perchlorate releases. From 1997 to
2009, the Department of Defense reported
perchlorate detections at 284 (almost 70 percent)
of its installations sampled (GAO 2010; ITRC
2005).
In addition, the past disposal of munitions in either
burial pits or by open burning and open detonation
may have resulted in releases to the environment.
The amount of perchlorate released can vary
depending on the length of time the disposal area
was used and the types of munitions disposed of
in the area (ITRC 2005).
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Technical Fact Sheet - Perchlorate
What are the environmental impacts of perchlorate? (continued)
~	Studies have shown perchlorate accumulates in
some food crop leaves, tobacco plants and in
broad-leaf plants (ATSDR 2008).
~	Surveys conducted by the U.S. Food and Drug
Administration have detected perchlorate in food
crops and milk (FDA 2008).
~	As of October 2009, perchlorate had been
detected at varying levels in drinking water,
groundwater, surface water, soil or sediment at
private and federal facilities in 45 states, three
U.S. territories and Washington D.C. The
maximum concentrations reported in any media
ranged from less than 4 parts per billion (ppb) to
more than 500,000 ppb (ASTSWMO 2011; GAO
2010).
~ EPA reported perchlorate detections at more than
40 hazardous waste sites on the EPA National
Priorities List as of June 2010 (GAO 2010).
What are the routes of exposure and the health effects of perchlorate?
~	Primary pathways for human exposure to
perchlorate are ingestion of contaminated food
and drinking water (ATSDR 2008; EPA FFRRO
2005).
~	Perchlorate is readily adsorbed after oral exposure
and can migrate from the stomach and intestines
to the bloodstream (ATSDR 2008).
~	The thyroid gland is the primary target of
perchlorate toxicity in humans. Thyroid hormones
play an important role in regulating metabolism
and are critical for normal growth and
development in fetuses, infants and young
children. Perchlorate can interfere with iodide
uptake into the thyroid gland at high enough
exposures, disrupting the functions of the thyroid
and potentially leading to a reduction in the
production of thyroid hormones (ATSDR 2008;
Cal/EPA 2012; NAS 2005).
~	Study results indicate that exposure to high doses
of perchlorate can result in the decrease of body
weight, cause hypertrophy of the thyroid gland and
decrease gene expression of thyroglobulin (Tg)
and thyroperoxidase (TPO), which are involved in
the biosynthesis of thyroid hormones (Wu and
others 2012).
~	Potassium perchlorate was historically used to
treat hyperthyroidism and Graves' Disease (an
autoimmune disorder) because of its ability to
inhibit thyroid iodide uptake (ATSDR 2008; NAS
2005).
~	Studies conducted on rodents showed that
perchlorate concentrations below that required to
alter thyroid hormone equilibrium are unlikely to
cause thyroid cancer in human beings (ATSDR
2008; EPA IRIS 2005).
~	Short-term exposure to high doses of ammonium,
sodium or potassium perchlorate may cause eye,
skin and respiratory tract irritation, coughing,
nausea, vomiting and diarrhea. Perchloric acid is
corrosive to the eyes, skin and respiratory tract,
and short-term exposure to high doses may cause
sore throat, coughing, labored breathing, deep
burns, loss of vision, abdominal pain, vomiting or
diarrhea (NIOSH2013).
Are there any federal and state guidelines and health standards
for perchlorate?
The EPA assigned perchlorate a chronic oral
reference dose (RfD) of 0.0007 milligrams per
kilogram per day (mg/kg/day) (EPA IRIS 2005).
The Agency for Toxic Substances and Disease
Registry (ATSDR) has established a minimal risk
level (MRL) of 0.0007 mg/kg/day for chronic-
duration oral exposure (365 days or more) to
perchlorate (ATSDR 2008, 2013).
EPA has decided to regulate perchlorate under the
Safe Drinking Water Act. EPA has initiated the
process of proposing a national primary drinking
water regulation (EPA 2012b).
The EPA established an Interim Lifetime Drinking
Water Health Advisory of 15 micrograms per liter
(jjg/L), which is a concentration of a perchlorate in
drinking water that is not expected to cause any
adverse noncarcinogenic effects for a lifetime of
exposure (EPA 2009, 2012a).
EPA has calculated a residential soil screening
level (SSL) of 55 milligrams per kilogram (mg/kg)
and an industrial SSL of 720 mg/kg for perchlorate
and perchlorate salts (ammonium, potassium,
sodium and lithium) (EPA 2013). 1
Screening Levels are developed using risk assessment guidance
from the EPASuperfund program. These risk-based concentrations
are derived from standardized equations combining exposure
information assumptions with EPA toxicity data. These calculated
screening levels are generic and not enforceable cleanup standards
but provide a useful gauge of relative toxicity.

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Technical Fact Sheet - Perchlorate
Are there any federal and state guidelines and health standards
for perchlorate? (continued)
EPA calculated a tap water screening level of 11
|jg/L for perchlorate and perchlorate salts (EPA
2013).
The EPA Office of Solid Waste and Emergency
Response (OSWER) recommended a preliminary
remediation goal (PRG) of 15 |jg/L at Superfund
sites (where there is an actual or potential drinking
water exposure pathway), where no federal or
state applicable or relevant and appropriate
requirements exist under federal or state laws.
PRGs are developed based on readily available
information and are modified, as necessary,
before final cleanup goals are established, based
on information that becomes available during the
remedial investigation/feasibility study (EPA 2009).
Numerous states have promulgated enforceable
standards for perchlorate in drinking water. For
example, Massachusetts (2 jjg/L) and California (6
jjg/L) have established enforceable standards for
perchlorate in drinking water (CDPH 2012;
Massachusetts DEP 2006).
California EPA released Draft California Human
Health Screening Levels (CHHSLs) for
perchlorate. The draft CHHSLs for perchlorate in
soil are 28 mg/kg for residential property and 350
mg/kg for commercial/industrial property (Cal/EPA
2010).
In 2012, California EPA's Office of Environmental
Health Hazard Assessment (OEHHA) proposed to
revise the existing Public Health Goal for
perchlorate in drinking water from 6 ug/L to 1 ug/L
(Cal/EPA 2012).
At least 10 other states have also developed
advisory levels or health-based goals for
perchlorate, ranging from 1 to 18 |jg/L for drinking
water and 1 to 72 |jg/L for groundwater (GAO
2010).
What detection and site characterization methods are available
for perchlorate?
The following methods can be used to analyze
perchlorate in drinking water, groundwater,
surface water and irrigation water:
¦	EPA Method 314.0 - Ion Chromatography (EPA
OGWDW 2012).
¦	EPA Method 314.1 Rev 1.0 - Inline Column
Concentration/Matrix Elimination Ion
Chromatography with Suppressed Conductivity
Detection (EPA OGWDW 2012).
¦	EPA Method 314.2 - Two-Dimensional Ion
Chromatography with Suppressed Conductivity
Detection (EPA OGWDW 2012).
¦	EPA Method 331.0 Rev. 1.0 - Liquid
Chromatography/Electrospray Ionization/ Mass
Spectrometry (EPA OGWDW 2012).
¦	EPA Method 332.0 - Ion Chromatography with
Suppressed Conductivity and Electrospray
lonization/Mass Spectrometry (EPA FFRRO
2005).
The following methods can be used to analyze
perchlorate in surface water, groundwater,
wastewater, salt water and soil:
¦	EPA SW-846 Method 6850 - High Performance
Liquid Chromatography/Electrospray
lonization/Mass Spectrometry (EPA 2007a).
¦	EPA SW-846 Method 6860 - Ion
Chromatography/Electrospray lonization/Mass
Spectrometry (EPA 2007b).
The presence of high amounts of other anions,
such as chloride, sulfate or carbonate, may
interfere with the analysis of perchlorate (EPA
1999).
Researchers have demonstrated the ability to
distinguish man-made and natural sources of
perchlorate in water samples using chlorine and
oxygen stable isotope ratio analysis (Bohlke and
others 2005; ITRC 2005).
What technologies are being used to treat perchlorate?
Ex Situ Treatment
¦ Ion exchange using perchlorate-selective or
nitrite-specific resins is a proven method for
removal of perchlorate from drinking water,
groundwater, surface water and other media.
Laboratory-study results indicate that an
electrically switched ion exchange system using
a conductive carbon nanotube nanocomposite
material could be used for the large-scale
treatment of wastewater (ITRC 2008; DoD
SERDP 2011).
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Technical Fact Sheet - Perchlorate
What technologies are being used to treat perchlorate? (continued)
¦	A recent field study demonstrated the effective
reduction of perchlorate to below detection limits
in groundwater using a large-scale weak base
anion resin ion exchange system (DoD ESTCP
2012b).
¦	A fluidized bed biological reactor (FBR)
treatment train successfully treated low and high
concentration levels of perchlorate in
groundwater to meet the California drinking
water standards (6 jjg/L) in a field study (DoD
ESTCP 2009b).
¦	Membrane technologies including
electrodialysis, reverse osmosis and
nanofiltration/ultrafiltration have been used to
remove perchlorate from groundwater, surface
water and wastewater; however, these all
require subsequent disposal of the perchlorate
removed (EPA FFRRO 2005; ITRC 2008).
¦	Liquid phase carbon adsorption using granular
activated carbon (GAC) is used to remove low
levels of perchlorate from groundwater and
surface water. The adsorptive capacity of GAC
may be increased through the addition of a
surface-active coating to produce a modified or
tailored GAC (Hou and others 2013; ITRC
2008).
¦	Laboratory study results indicate that ultraviolet
laser reduction can be used to decompose low
levels of perchlorate (below 100 jjg/L) dissolved
in water. This technology is currently undergoing
laboratory testing and has not yet been
commercialized or used in full-scale systems
(ITRC 2008; Vellanki and others 2013).
In Situ Treatment
¦	Enhanced in situ bioremediation using
perchlorate-selective microbes can be an
effective method for degrading perchlorate in
groundwater and soil. Study results indicate that
acetate and hydrogen addition as electron donor
can increase perchlorate removal efficiency
(ITRC 2008; Wang and others 2013).
¦	Recent field studies have evaluated in situ
bioremediation of perchlorate in groundwater
and soil using gaseous electron donors. Field
study demonstration results indicate that a
horizontal flow treatment well system can
effectively deliver electron donor and promote
the in situ biological reduction of perchlorate in
groundwater (DoD ESTCP 2009c).
A field study evaluated the use of gaseous
electron donor injection technology for the
anaerobic biodegradation of perchlorate in
vadose zone soil. Results showed an average
perchlorate destruction of more than 90 percent
within the targeted 10-foot radius of influence
within five months (DoD ESTCP 2009d).
A field study evaluated the use of an emulsified
oil biobarrierto enhance the in situ anaerobic
biodegradation of perchlorate in groundwater.
Within 5 days of injection, perchlorate was
degraded from an initial concentration range of
3,100 to 20,000 |jg/L to below detection limits
(less than 4 jjg/L) in the injection and nearby
monitoring wells (DoD SERDP 2008).
A field study demonstrated the effective use of
an active biobarrier approach involving on-going
groundwater recirculation and delivery of an
electron donor and a semi-passive approach
involving the periodic delivery of electron donor
to create a biobarrier and promote perchlorate
biodegradation in groundwater (DoD ESTCP
2009a, 2012a).
Laboratory and field studies have demonstrated
the potential for using monitored natural
attenuation to treat perchlorate in groundwater
(DoD ESTCP 2010).
Several bench-scale tests have demonstrated
the potential effectiveness of phytoremediation
and constructed wetlands to treat perchlorate-
contaminated media; limited field study
demonstrations have been implemented. Recent
laboratory study results indicate that the wetland
plant, Eichhornia crassipes, may be an effective
plant for constructing a wetland to remediate
high levels of perchlorate in water based on its
high tolerance and accumulation ability (He and
others 2013; ITRC 2008).
Where can I find more information about perchlorate?
Agency for Toxic Substances and Disease
Registry (ATSDR). 2008. "Toxicological Profile
for Perchlorates."
www. atsd r. cd c. q o v/toxprof i I es/t p 162. pdf
ATSDR. 2013. "Minimal Risk Levels (MRL)" List.
www. atsd r. cd c. a o v/m rls/i nd ex. as p
Association of State and Territorial Solid Waste
Management Officials (ASTSWMO). 2011.
"Perchlorate Policy Update."
www.astswmo.org/Files/Policies and Publicatio
ns/Federal Facilities/2011.04 FINAL Perchlorat
e Policy Update.pdf
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Technical Fact Sheet - Perchlorate
Where can I find more information about perchlorate? (continued)
Bohlke, J. K., Sturchio, N.C., Gu, B., Horita, J.,
Brown, G.M., Jackson, W.A., Batista, J., and
P.B. Hatzinger. 2005. "Perchlorate Isotope
Forensics." Analytical Chemistry. Volume 77.
Pages 7838 to 7842. http://denix.osd.mil/cmrmd/
upload/BQHLKE2005 O.pdf
California Department of Public Health (CDPH).
2012. Perchlorate in Drinking Water.
www.cdph.ca.gov/certlic/drinkinqwater/Paqes/Pe
rchlorate.aspx
California Environmental Protection Agency
(Cal/EPA). 2010. "California Human Health
Screening Levels for Perchlorate." http://oehha.
ca.qov/risk/pdf/Perchlorate09231 O.pdf
Cal/EPA. 2012. "Draft Public Health Goal for
Perchlorate in Drinking Water." http://oehha.ca.
qov/water/phq/pdf/120612Perchloratedraft.pdf
He, H., Gao, H„ Chen, G„ Li, H., Lin, H. and Z.
Shu. 2013. "Effects of Perchlorate on Growth of
Four Wetland Plants and its Accumulation in
Plant Tissues." Environmental Science and
Pollution Research. Volume 20 (10). Pages
7301 to 7308.
Hou, P., Cannon, F.S., Brown, N.R., Byrne, T.,
Gu, X., and C.N. Delgado. 2013. "Granular
Activated Carbon Anchored with Quaternary
Ammonium/Epoxide-Forming Compounds to
Enhance Perchlorate Removal from
Groundwater." Carbon. Volume 53. Pages 197
to 207.
Interstate Technology Regulatory Council
(ITRC). 2005. "Perchlorate: Overview of Issues,
Status, and Remedial Options."
www.itrcweb.org/Documents/PERC-1 .pdf
ITRC. 2008. "Remediation Technologies for
Perchlorate Contamination in Water and Soil."
www.itrcweb.org/Guidance/GetDocument7docu
mentlD=61
Massachusetts Department of Environmental
Protection (DEP). 2006. Water Resources:
Perchlorate Information.
www.mass.gov/eea/agencies/massdep/water/dri
nking/perchlorate-information.html
National Institute of Health (NIH). 2013. Haz-
Map: Information on Hazardous Chemicals and
Occupational Diseases.
http://hazmap.nlm.nih.gov/index.php
National Research Council of the National
Academies (NAS). 2005. "Health Implications of
Perchlorate Ingestion."
www.nap.edu/catalog.php7record id=11202
National Institute for Occupational Safety and
Health (NIOSH). 2013. International Chemical
Safety Cards (ICSC).
www.cdc.gov/niosh/ipcs/icstart.html
Rao, B., Anderson, T.A., Orris, G.J., Rainwater,
K.A., Rajagopalan, S., Sandvig, R.M., Scanlon,
B.R., Stonestrom, D.A., Walvoord, M.A, and W.A.
Jackson. 2007. "Widespread Natural Perchlorate
in Unsaturated Zones of the Southwest United
States." Environmental Science & Technology.
Volume 41 (13). Pages 4522 to 4528.
U.S. Department of Defense (DoD) Environmental
Security Technology Certification Program
(ESTCP). 2009a. "Comparative Demonstration of
Active and Semi-Passive In-Situ Bioremediation
Approaches for Perchlorate Impacted
Groundwater (Longhorn Army Ammunition Plant)."
ER-0219.
DoD. ESTCP. 2009b. "Demonstration of a Full-
Scale Fluidized Bed Bioreactor for the Treatment
of Perchlorate at Low Concentration in
Groundwater." ER-0543.
DoD ESTCP. 2009c. "In Situ Bioremediation of
Perchlorate in Groundwater." ER-0224.
www.cluin.org/download/contaminantfocus/perchlo
rate/ER-0224-C&P-1 .pdf
DoD ESTCP. 2009d. "In Situ Bioremediation of
Perchlorate in Vadose Zone Soil Using Gaseous
Electron Donors." ER-0511.
www.clu-in.org/download/contaminantfocus/
perchlorate/ER-0511-FR-1 .pdf
DoD ESTCP. 2010. "Evaluation of Potential for
Monitored Natural Attenuation of Perchlorate in
Groundwater (Indian Head)." ER-200428.
www.serdp.org/Program-Areas/Environmental-
Restoration/Contaminated-Groundwater/
Emerging-lssues/ER-200428
DoD ESTCP. 2012a. "Comparative Demonstration
of Active and Semi-Passive In-Situ Bioremediation
Approaches for Perchlorate Impacted
Groundwater: Active In Situ Bioremediation
Demonstration (Aeroject Facility)." ER-200219.
DoD ESTCP. 2012b. "Demonstration of
Regenerable, Large-Scale Ion Exchange System
Using WBA Resin in Rialto, Ca." ER-201168.
DoD Strategic Environmental Research and
Development Program (SERDP). 2008.
"Development of Permeable Reactive Barriers
(PRB) Using Edible Oils." ER-1205.
DoD SERDP. 2011. "Novel Electrochemical
Process for Treatment of Perchlorate in Waste
Water." ER-1433. www.serdp.org/Program-
Areas/Environmental-Restoration/Contaminants-
on-Ranges/ER-1433
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Technical Fact Sheet - Perchlorate
Where can I find more information about perchlorate? (continued)
~	U.S. Environmental Protection Agency (EPA).
1999. "Method 314.0 Determination of
Perchlorate in Drinking Water Using Ion
Chromatography." Revision 1.0. www.epa.gov/
oqwdw/methods/pdfs/methods/met314.pdf
~	EPA. 2007a. Method 6850. "Perchlorate in
Water, Soils and Solid Wastes Using High
Performance Liquid Chromatography/
Electrospray lonization/Mass Spectrometry."
www.epa.gov/epawaste/hazard/testmethods/pdf
sZ6850.pdf
~	EPA. 2007b. Method 6860. "Perchlorate in
Water, Soils and Solid Wastes Using Ion
Chromatography/Electrospray lonization/Mass
Spectrometry." www.epa.gov/epawaste/hazard/
testmethods/pdfs/6860. pdf
~	EPA. 2009. "Revised Assessment Guidance for
Perchlorate." www.epa.gov/fedfac/documents/
perchlorate memo 01-08-09.pdf
~	EPA. 2011. Region 9. Perchlorate in the Pacific
Southwest, www.epa.gov/region9/toxic/
perchlorate/per ca.html#olin
~	EPA. 2012a. "2012 Edition of the Drinking Water
Standards and Health Advisories." EPA 822-S-12-
001.
~	EPA. 2012b. Drinking Water Contaminants.
Unregulated. Perchlorate. water.epa.gov/drink/
co nta m i n a nts/u n reg u lated/pe rch lo rate. cf m
~	EPA. 2013. Regional Screening Level (RSL)
Summary Table.
www.epa.gov/reg3hwmd/risk/human/rb-
concentration table/Generic Tables/index.htm
~	EPA Federal Facilities Restoration and Reuse
Office (FFRRO). 2005. "Perchlorate Treatment
Technology Update - Federal Facilities Forum
Issue Paper." EPA 542-R-05-015.
www.epa.gov/tio/download/remed/542-r-05-
015.pdf
Additional information on perchlorate can be found at EPA's
~	EPA. Integrated Risk Information System (IRIS).
2005. "Perchlorate and Perchlorate Salts."
www.epa.Qov/iris/subst/1007.htm.
~	EPA Office of Ground Water and Drinking Water
(OGWDW). 2012. "Analytical Methods
Developed by the Office of Ground Water and
Drinking Water." www.epa.gov/safewater/
methods/analvticalmethods ogwdw.html
~	U.S. Food and Drug Administration (FDA). 2008.
"US Food and Drug Administration's Total Diet
Study: Dietary Intake of Perchlorate and
Iodine." www.nature.com/ies/iournal/v18/n6/
pdf/7500648a.pdf
~	U.S. Government Accountability Office (GAO).
2005. "Perchlorate: A System to Track
Sampling and Cleanup Results is Needed."
GAO-05-462.
www.gao.gov/new.items/d05462.pdf
~	U.S. GAO. 2010. "Perchlorate: Occurrence is
Widespread but at Varying Levels; Federal
Agencies Have Taken Some Actions to
Respond to and Lessen Releases." GAO -10-
769. www.gao.gov/assets/310/308652.pdf
~	Vellanki, B.P., Batchelor, B., and A. Abdel-
Wahab. 2013. "Advanced Reduction Processes:
A New Class of Treatment Processes."
Environmental Engineering Science. Volume 30
(5). Pages 264 to 271.
~	Wang, R., Chen, M„ Zhang, J.W., Liu, F., H.H.
Chen. 2013. "Microbial Perchlorate Reduction in
Groundwater with Different Electron Donors."
Applied Mechanics and Materials. Volume 295
to 298. Pages 1402 to 1407.
~	Wu, F., Zhou, X., Zhang, R., Pan, M., and K.L.
Peng. 2012. "The Effects of Ammonium
Perchlorate on Thyroid Homeostasis and
Thyroid-Specific Gene Expression in Rat."
Environmental Toxicology. Volume 27 (8).
Pages 445 to 452.
www.cluin.org/perchlorate.
Contact Information
If you have any questions or comments on this fact sheet, please contact:
or by email at cooke.marvt@epa.gov.
Mary Cooke, FFRRO, by phone at (703) 603-8712
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