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	. I^Toxics Release Inven

Agency	-	2010 Nevada^Rjg|9j^

U.S. EPA Region 9: California, Arizona, Nevada, Hawaii, the Pacific islands, and Tribal Nations

Nevada's Releases

In 2010,129 facilities reported a total of 477 mil-
lion pounds of toxic chemical releases. Nevada's
total reported on-site and off-site releases increased
161% (294 million pounds), when compared to
2009 data.

What is a Release?

A TRI "release" is defined as the amount of a toxic
chemical released on-site (to air, water, underground
injection, landfills, and other land disposal), and
the amount transferred off-site for disposal; it is
measured in pounds, unless stated otherwise.

Total Releases for Reporting Years 2008 - 2010

Year

Air

Water

On-Site
Land

Under-
ground
Injection

Off-Site

Total
Releases

2008

1,555,488

160

196,366,905

0

1,874,256

199,796,810

2009

1,666,516

118

179,544,500

0

1,775,648

182,986,782

2010

1,509,948

1,293,701

472,142,276

0

2,057,218

477,003,143

Releases to the Environment

Air: Air releases decreased 9% (157 thousand
pounds) since 2009.

Water: Water releases increased 1,096,257%
(1.29 million pounds) since 2009.

On-Site Land: On-site land releases increased
163% (293 million pounds) since 2009.

Underground Injection: Underground Injection
releases did not change since 2009.

Off-Site Transfers: Total off-site transfers have
increased 16% (282 thousand pounds) since 2009.

Facilities with Largest Chemical Releases

The top ten facilities in Nevada for total on-site
and off-site releases of all chemicals were the
following:



Facility Name

City

County

Total
Releases

1

NEWMONT MINING CORP
COPPER CANYON FACILITY

BATTLE
MOUNTAIN

LANDER

208,127,221

2

NEWMONT MINING CORP
TWIN CREEKS MiNE

GOLCONDA

HUMBOLDT

169,175,460

3

BARRICK GOLDSTRIKE
MINES INC.

ELKO

ELKO

29,261,541

4

CORTEZGOLD MINES

CRESCENT
VALLEY

LANDER

24,308,733

5

NEWMONT MINING CORP-
CARLIN SOUTH AREA

CARLIN

EUREKA

16,357,404

6

RUBY HILL MiNE

EUREKA

EUREKA

10,291,679

7

JERRITT CANYON MINE

ELKO

ELKO

4,433,257

8

US ECOLOGY NEVADA INC.

BEATTY

NYE

3,433,319

9

SMOKYVALLEY COMMON
OPERATION

ROUND
MOUNTAIN

NYE

1,933,852

10

TRONOXLLC

HENDERSON

CLARK

1,628,068

Top 10 Released Chemicals

The top released chemicals based on total on-site
and off-site releases in Nevada were the following:

Chemical

Total Releases
(pounds)

Percentage of
Total Releases

ARSENIC & ARSENIC
COMPOUNDS

271,587,258

57.0%

LEAD & LEAD COMPOUNDS

84,387,335

17,7%

ZINC COMPOUNDS

36,706,693

7.7%

MANGANESE & MANGANESE
COMPOUNDS

33,083,462

6.9%

COPPER & COPPER
COMPOUNDS

17,026,709

3.6%

ANTIMONY & ANTIMONY
COMPOUNDS

10,727,528

2.2%

NITRATE COMPOUNDS

5,595,183

1.2%

MERCURY & MERCURY
COMPOUNDS

4,208,347

0.9%

NICKEL & NICKEL
COMPOUNDS

2,308,537

0.5%

VANADIUM (EXCEPT WHEN
CONTAINED IN ALLOY) &
VANADIUM COMPOUNDS

2,017,263

0.4%


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In determining release quantities for metal com-
pounds, facilities only consider the primary metal
portion of the compound. For instance, a facility
reportingfor lead compounds only reports the lead
portion of the lead compounds released.

Starting in 2000, EPA established more stringent
reporting thresholds for persistent bioaccumulative
toxic (PBT) chemicals originally on, or added to,
the TRI chemical list. PBT chemicals are of par-
ticular concern not only because they are toxic,
but also because they remain in the environment
for long periods of time, are not readily destroyed,
and build up or accumulate in body tissue. The
TRI PBT chemicals include dioxin and dioxin-like
compounds, lead and lead compounds, mercury
and mercury compounds, polycyclic aromatic com-
pounds (PACs), polychlorinated biphenyls (PCBs),
and certain pesticides, among other chemicals.

In Nevada, 89 million pounds of total (on-site and
off-site) releases of PBT chemicals were reported
in 2010. This is an increase of 33 million pounds
or59%since 2009. Lead and lead compounds top
the list again in 2010. The PBT chemicals in the
table are ranked in descending order for 2010.

Facilities with Largest PBT Releases

The top ten facilities in Nevada for total on-site and
off-site releases of PBT chemicals are:



Facility Name

City

County

Total
Releases

1

NEWMONT MINING CORP.
COPPER CANYON FACILITY

BATTLE
MOUNTAIN

Lander

53,213,492

2

RUBY HILL MINE

EUREKA

Eureka

10,288,323

3

CORTEZGOLD MINES

CRESCENT
VALLEY

Lander

9,984,395

4

BARRICK GOLDSTRIKE MINES INC.

ELKO

Elko

5,737,703

5

NEWMONT MINING CORP.
TWIN CREEKS MINE

GOLCONDA

Humboldt

2,051,302

6

NEWMONT MINING CORP. -
CARLIN SOUTH AREA

CARLIN

Eureka

2,050,048

7

SMOKY VALLEY COMMON
OPERATION

ROUND
MOUNTAIN

Nye

1,466,253

8

HYCROFTMINE

WINNEMUCA

Humboldt

1,073,159

9

BALD MOUNTAIN MINE

ELKO

White Pine

804,456

10

MARIGOLD MINING CO.

VALMY

Humboldt

662,241

For More Information

See www.eoa.gov/tri for national TRI information
or www.epa.gov/region09/tri for Regional TRI infor-
mation, or contact Lily Lee, Toxic Release Inventory
Coordinator, US EPA Region 9, at lee.lilv@epa.gov
or 415-947-4187.

Release data alone are not sufficient to determine exposure or to
calculate potential risks to human health and the environment.
TRI data, in conjunction with other information, such as the toxic-
ity of the chemical, the release medium (e.g., air), and site-specific
conditions, can be used as a starting point in evaluating exposures
that may result from releases of toxic chemicals.

Chemical

Total On-Site and Off-Site
Releases in pounds

Percent
Change

2009

2010

LEAD & LEAD COMPOUNDS

50,690,696

84,387,335

66%

MERCURY & MERCURY
COMPOUNDS

5,281,781

4,208,347

-20%

TRIFLURALIN

3,609

3,067

-15%

CHLORDANE

287

348

21%

POLYCHLORINATED
BIPHENYLS (PCBs)

488

120

-75%

POLYCYCLIC AROMATIC
COMPOUNDS

19

23

21%

BENZO(G,H,l)PERYLENE

0.28

0.16

-42%

DIOXIN AND DIOXIN-LIKE
COMPOUNDS*

0.016 grams

0.014 grams

-14%

*Releases of most Persistent, Bioaccumulative and Toxic (PBT) chemicals
are in pounds. Dioxin and dioxin-like compounds data are in grams.


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