Appendix E E1

USGS 34 (433334112565501)

Dichlorodifluoromethene, in micrograms per liter

1988 1990 1992 1994 1996 1998 2000 2002 2004 2006 2008 2010 2012

0.00 0.05 0.10 0.15 0.20

Regression, p = 0.623

1988 1990 1992 1994 1996 1998 2000 2002 2004 2006 2008 2010 2012

0.0 0.1 0.2 0.3 0.4

Regression, p < 0.001

1,1,1–Trichloroethane, in micrograms per liter

Appendix E. Plots of Trend Analyses for Volatile Organic Compounds from 

Selected Sites, 1987–2012

Additional explanation for all graphs in appendix E

 Represents percentile limits defining the confidence band of the regression model

 Concentration

 Concentration range less than the reporting limit 
E2 Water-Quality Characteristics and Trends for Selected Sites, Idaho National Laboratory, Idaho, 1981–2012

USGS 38 (433322112564301)

1988 1990 1992 1994 1996 1998 2000 2002 2004 2006 2008 2010 2012

0.00 0.05 0.10 0.15 0.20

Regression, p = 0.388

1988 1990 1992 1994 1996 1998 2000 2002 2004 2006 2008 2010 2012

0.0 0.1 0.2 0.3 0.4 0.5 0.6

Regression, p < 0.001

Dichlorodifluoromethene, in micrograms per liter 1,1,1–Trichloroethane, in micrograms per liter
Appendix E E3

USGS 77 (433315112560301)

1988 1990 1992 1994 1996 1998 2000 2002 2004 2006 2008 2010 2012

0.00 0.05 0.10 0.15 0.20

Regression, p = 0.011

1988 1990 1992 1994 1996 1998 2000 2002 2004 2006 2008 2010 2012

0.0 0.1 0.2 0.3 0.4 0.5 0.6

Regression, p < 0.001

1,1−Dichloroethene, in micrograms per liter

1988 1990 1992 1994 1996 1998 2000 2002 2004 2006 2008 2010 2012

0.00 0.05 0.10 0.15 0.20

Regression, p < 0.001

Dichlorodifluoromethene, in micrograms per liter 1,1,1–Trichloroethane, in micrograms per liter
E4 Water-Quality Characteristics and Trends for Selected Sites, Idaho National Laboratory, Idaho, 1981–2012

USGS 84 (433356112574201)

1988 1990 1992 1994 1996 1998 2000 2002 2004 2006 2008 2010 2012

0.00 0.05 0.10 0.15 0.20

Regression, p = 0.001

Dichlorodifluoromethene, in micrograms per liter
Appendix E E5

USGS 65 (433447112574501)

1988 1990 1992 1994 1996 1998 2000 2002 2004 2006 2008 2010 2012

0.0 0.2 0.4 0.6

Regression, p = 0.670

1988 1990 1992 1994 1996 1998 2000 2002 2004 2006 2008 2010 2012

0.0 0.2 0.4 0.6 0.8 1.0 1.2

Regression, p < 0.001

Dichlorodifluoromethene, in micrograms per liter 1,1,1–Trichloroethane, in micrograms per liter
E6 Water-Quality Characteristics and Trends for Selected Sites, Idaho National Laboratory, Idaho, 1981–2012

RWMC Production (433002113021701)

Trichloroethene, in micrograms per liter

1988 1990 1992 1994 1996 1998 2000 2002 2004 2006 2008 2010 2012

0 12345

Regression, p < 0.001

Carbon Tetrachloride, in micrograms per liter

1988 1990 1992 1994 1996 1998 2000 2002 2004 2006 2008 2010 2012

0246 8 1 0 1 2

Regression, p < 0.001

Trichloromethane, in micrograms per liter

1988 1990 1992 1994 1996 1998 2000 2002 2004 2006 2008 2010 2012

012345

Regression, p < 0.001

Tetrachlorothene, in micrograms per liter

1988 1990 1992 1994 1996 1998 2000 2002 2004 2006 2008 2010 2012

0.0 0.1 0.2 0.3 0.4 0.5

Regression, p < 0.001
Appendix E E7

RWMC Production (433002113021701)

1,1,1–Trichloroethane, in micrograms per liter

1988 1990 1992 1994 1996 1998 2000 2002 2004 2006 2008 2010 2012

0.0 0.2 0.4 0.6 0.8

Regression, p < 0.001

Tribromomethane, in micrograms per liter

1988 1990 1992 1994 1996 1998 2000 2002 2004 2006 2008 2010 2012

0.0 0.5 1.0 1.5 2.0 2.5 3.0

Regression, p < 0.001
E8 Water-Quality Characteristics and Trends for Selected Sites, Idaho National Laboratory, Idaho, 1981–2012

USGS 87 (433013113024201)

1988 1990 1992 1994 1996 1998 2000 2002 2004 2006 2008 2010 2012

0.0 0.5 1.0 1.5 2.0

Regression, p < 0.001

1988 1990 1992 1994 1996 1998 2000 2002 2004 2006 2008 2010 2012

0.0 0.1 0.2 0.3 0.4

Regression, p < 0.001

1988 1990 1992 1994 1996 1998 2000 2002 2004 2006 2008 2010 2012

0.0 0.5 1.0 1.5 2.0

Regression, p < 0.001

T

1988 1990 1992 1994 1996 1998 2000 2002 2004 2006 2008 2010 2012

0.00 0.05 0.10 0.15 0.20 0.25

Regression, p = 0.490

Trichloroethene, in micrograms per liter Trichloromethane, in micrograms per liter Tetrachlorothene, in micrograms per liter Dichlorodifluoromethene, in micrograms per liter
Appendix E E9

USGS 87 (433013113024201)

1988 1990 1992 1994 1996 1998 2000 2002 2004 2006 2008 2010 2012

012345 6

Regression, p < 0.001

1988 1990 1992 1994 1996 1998 2000 2002 2004 2006 2008 2010 2012

0.00 0.05 0.10 0.15 0.20 0.25

Regression, p = 0.830

Carbon Tetrachloride, in micrograms per liter 1,1,1–Trichloroethane, in micrograms per liter
E10 Water-Quality Characteristics and Trends for Selected Sites, Idaho National Laboratory, Idaho, 1981–2012

USGS 88 (432940113030201)

1988 1990 1992 1994 1996 1998 2000 2002 2004 2006 2008 2010 2012

0.0 0.5 1.0 1.5 2.0 2.5

Regression, p < 0.001

1988 1990 1992 1994 1996 1998 2000 2002 2004 2006 2008 2010 2012

0.0 0.2 0.4 0.6 0.8 1.0

Regression, p = 0.303

1988 1990 1992 1994 1996 1998 2000 2002 2004 2006 2008 2010 2012

0246

Regression, p < 0.001

1988 1990 1992 1994 1996 1998 2000 2002 2004 2006 2008 2010 2012

0.0 0.2 0.4 0.6 0.8 1.0

Regression, p < 0.001

Trichloroethene, in micrograms per liter Trichloromethane, in micrograms per liter Carbon Tetrachloride, in micrograms per liter 1,1,1–Trichloroethane, in micrograms per liter
Appendix E E11

USGS 120 (432919113031501)

1988 1990 1992 1994 1996 1998 2000 2002 2004 2006 2008 2010 2012

0 2468

Regression, p < 0.001

1988 1990 1992 1994 1996 1998 2000 2002 2004 2006 2008 2010 2012

0.0 0.5 1.0 1.5 2.0 2.5

Regression, p = 0.090

1988 1990 1992 1994 1996 1998 2000 2002 2004 2006 2008 2010 2012

0.0 0.5 1.0

Regression, p = 0.004

1988 1990 1992 1994 1996 1998 2000 2002 2004 2006 2008 2010 2012

0.00 0.10 0.20 0.30

Regression, p = 0.028

Trichloroethene, in micrograms per liter Trichloromethane, in micrograms per liter Carbon Tetrachloride, in micrograms per liter Tetrachloroethene, in micrograms per liter
E12 Water-Quality Characteristics and Trends for Selected Sites, Idaho National Laboratory, Idaho, 1981–2012

USGS 120 (432919113031501)

1988 1990 1992 1994 1996 1998 2000 2002 2004 2006 2008 2010 2012

0.0 0.2 0.4 0.6

Regression, p = 0.855

1,1,1–Trichloroethane, in micrograms per liter