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ORGANIC

WELL WATER QUALITY DATA

BITTERROOT VALLEY SANITARY LANDFILL

Acetone Benzene Bromo-benzene Bromo-dichloro-methane

Bromo-chloro-methane

Bromoform Bromo-methane n-Butyl-benzene sec-Butyl-benzene

Sample Site

Sample Code

Sample Date

Sample Time

BRGW-1 2/26/1992 900 10.0U 0.5U 1.0U 1.0U UN 1.0

BRGW-1 5/22/1992 850 10.0U 0.5U 1.0U 1.0U 1.0U UN 1.0

BRGW-1 8/27/1992 1945 10.0U 0.5U 1.0U 1.0U UN 1.0

BRGW-1 12/23/1992 1210 10.0U 1.0U 1.0U 1.0U UN 1.0

BRGW-2 2/26/1992 1120 10.0U 0.5U 1.0U 1.0U UN 1.0

BRGW-2 5/22/1992 750 10.0U 1.0 1.0U 1.0U 1.0U UN 1.0

BRGW-2 8/26/1992 1730 10.0U 1.0 1.0U 1.0U UN 1.0

BRGW-2 12/21/1992 1510 10.0U 1.0U 1.0U 1.0U UN 1.0

BRGW-2 7/12/1993 1700 2.0U 1.0U 1.0U 1.0U 1.0U U 1.0U 1.0UN 2.0

BRGW-2 7/13/1993 1700 102.0% 108.0% 103.0% 123.0% 113.0% % 100.0% 99.0%LS 135.0

BRGW-2 1/26/1994 1325 3.0 1.0U 1.0U 1.0U 1.0U U 1.0UN 2.0

BRGW-2 7/7/1994 1410 2.0 1.0U 1.0U 1.0U 1.0U U 1.0U 1.0UJB%N 2.0

BRGW-2 1/9/1995 1635 2.0JC# 1.0UJC# 0.5UJC# 1.0UJC# 0.5UJC# UJC#B% 1.0UJC# 1.0UJC#TB 1.0

BRGW-2 7/21/1995 930 2.0 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UFD 1.0

BRGW-2 7/21/1995 910 2.0 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-2 1/12/1996 1635 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-2 7/17/1996 1530 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-2 7/17/1996 1530 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UFD 1.0

BRGW-2 1/8/1997 1325 2.0 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-2 7/9/1997 735 2.0 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-2 7/9/1997 2.0 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UFD 1.0

BRGW-2 1/16/1998 1433 1.0 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-2 7/7/1998 1225 1.0 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-2 1/13/1999 1628 0.5 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-2 7/16/1999 1510 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-2 1/12/2000 1312 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-2 7/12/2000 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-2 1/12/2001 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-2 7/16/2001 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-2 1/9/2002 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-2 7/11/2002 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-2 1/16/2003 1155 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-2 7/16/2003 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-2 1/16/2004 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

Notes: 1. Units are ug/l unless otherwise noted; Blank indicates parameter was not analyzed.

2. Sample Codes: BFS - Blind Field Standard; BB - Bottle Blank; TB - Trip Blank; N - Natural;FB - Field Blank; FD - Field Duplicate.

3. Data Qualifiers; U - Undetected; R - Rejected; J - Estimated. X - Contaminated Field Blank; F% - Field Duplicate Relative % Differences are Outside Acceptable Limits; C# - Instrument Calibration Relative Standard Deviations are Outside Acceptable Limits; A - Blind Field Standard Results are Outside Acceptable Limits; S% - Laboratory Surrogate Spike Recoveries are Outside Acceptable Limits; M% - Laboratory Matrix Spike Recoveries Exceed Acceptable Limits; D% - Laboratory Duplicate Samples are Outside Acceptable Limits; L% - Laboratory control sample results are outside acceptable limits; H - Analysis Performed After Established Holding Time; B - Method Blank Shows Evidence of Contamination; * - The Material was Detected below the Level of ther Associated Value (PQL) but above the MDL; T - Trip Blank Shows Evidence of Contamination; Q - Due to Dilution, Quantification Down to the Montana Standard Could Not Be Achieved..

G:\Environmental\BVSL\bvsl2k.mdb <Table_H_Historical_Organics.rpt>

Acetone Benzene Bromo-benzene

Bromo-dichloro-methane

Bromo-chloro-methane

Bromoform Bromo-methane n-Butyl-benzene sec-Butyl-benzene

Sample Site

Sample Code

Sample Date

Sample Time

BRGW-2 7/20/2004 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-2 1/11/2005 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-2 7/21/2005 1518 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-2 1/20/2006 1500 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-2 10/3/2006 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 0.5

BRGW-2 10/23/2008 1 0.5< 1.0< 0.5< 1.0< 0.5< < 1.0< 1.0<N 0.5

BRGW-3 7/13/1993 1700 2.0U 1.0U 1.0U 1.0U 1.0U U 1.0U 1.0UN 2.0

BRGW-3 1/25/1994 1615 2.0U 1.0U 1.0U 1.0U 1.0U U 1.0ULD 2.0

BRGW-3 1/25/1994 1615 2.0U 1.0U 1.0U 1.0U 1.0U U 1.0UN 2.0

BRGW-3 7/6/1994 1620 1.0U 1.0U 1.0U 1.0U 1.0U U 1.0U 1.0UN 2.0

BRGW-3 7/6/1994 1620 1.0U 1.0U 1.0U 1.0U 1.0U U 1.0U 1.0UFD 2.0

BRGW-3 1/10/1995 1620 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-3 7/21/1995 820 0.5U 1.0U 0.5U 1.0U 1.0U URL% 1.0U 1.0UN 2.0

BRGW-3 1/11/1996 1240 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-3 7/17/1996 1200 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-3 1/8/1997 1236 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-3 7/9/1997 900 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-3 1/16/1998 1300 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-3 1/13/1999 1457 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-3 7/15/1999 1700 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-3 1/11/2000 1615 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-3 7/14/2000 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-3 1/12/2001 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-3 7/12/2001 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-3 1/9/2002 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-3 7/11/2002 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-8 2/27/1992 1339 10.0U 0.5U 1.0U 1.0U UN 1.0

BRGW-8 5/21/1992 1954 10.0U 0.5U 1.0U 1.0U 1.0U UN 1.0

BRGW-8 8/26/1992 1425 10.0U 0.5U 1.0U 1.0U UN 1.0

BRGW-8 12/21/1992 1700 10.0U 1.0U 1.0U 1.0U UN 1.0

BRGW-8 7/16/1993 1400 2.0U 1.0U 1.0U 1.0U 1.0U U 1.0U 1.0UN 2.0

BRGW-8 1/26/1994 850 2.0U 1.0U 1.0U 1.0U 1.0U U 1.0UN 2.0

BRGW-8 7/7/1994 1325 1.0U 1.0U 1.0U 1.0U 1.0U U 1.0U 1.0UJB%N 2.0

BRGW-8 7/7/1994 1325 1.0U 1.0U 1.0U 1.0U 1.0U U 1.0ULD 2.0

BRGW-8 1/12/1995 1055 1.0U 1.0U 1.0U 1.0U 1.0U U 1.0U 1.0UN 1.0

BRGW-8 7/21/1995 1500 0.5U 1.0U 0.5U 1.0U 0.5U URL% 1.0U 1.0UN 1.0

BRGW-8 1/12/1996 1620 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-8 1/12/1996 1620 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0ULD 1.0

BRGW-8 1/12/1996 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UFD 1.0

Notes: 1. Units are ug/l unless otherwise noted; Blank indicates parameter was not analyzed.

2. Sample Codes: BFS - Blind Field Standard; BB - Bottle Blank; TB - Trip Blank; N - Natural;FB - Field Blank; FD - Field Duplicate.

3. Data Qualifiers; U - Undetected; R - Rejected; J - Estimated. X - Contaminated Field Blank; F% - Field Duplicate Relative % Differences are Outside Acceptable Limits; C# - Instrument Calibration Relative Standard Deviations are Outside Acceptable Limits; A - Blind Field Standard Results are Outside Acceptable Limits; S% - Laboratory Surrogate Spike Recoveries are Outside Acceptable Limits; M% - Laboratory Matrix Spike Recoveries Exceed Acceptable Limits; D% - Laboratory Duplicate Samples are Outside Acceptable Limits; L% - Laboratory control sample results are outside acceptable limits; H - Analysis Performed After Established Holding Time; B - Method Blank Shows Evidence of Contamination; * - The Material was Detected below the Level of ther Associated Value (PQL) but above the MDL; T - Trip Blank Shows Evidence of Contamination; Q - Due to Dilution, Quantification Down to the Montana Standard Could Not Be Achieved..

Bromo-dichloro-methane

Bromo-chloro-methane

Bromoform Bromo-methane n-Butyl-benzene sec-Butyl-benzene

Sample Site

Sample Code

Sample Date

Sample Time

BRGW-8 7/17/1996 1320 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-8 7/17/1996 1320 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0ULD 1.0

BRGW-8 1/8/1997 1600 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-8 7/9/1997 810 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-8 1/16/1998 1332 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-8 7/7/1998 1319 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-8 1/13/1999 1536 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-8 7/15/1999 1741 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-8 1/12/2000 1215 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-8 7/14/2000 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UD 1.0

BRGW-8 7/14/2000 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-8 1/11/2001 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-8 7/12/2001 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-8 1/9/2002 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-8 7/11/2002 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-8 1/16/2003 1000 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-8 7/16/2003 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-8 1/14/2004 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-8 7/20/2004 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-8 1/11/2005 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-8 7/22/2005 1115 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-8 1/20/2006 1406 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-8 9/29/2006 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 0.5

BRGW-8 10/22/2008 1 0.5< 1.0< 0.5< 1.0< 0.5< < 1.0< 1.0<N 0.5

BRGW-9 2/27/1992 1715 10.0U 0.5U 1.0U 1.0U UN 1.0

BRGW-9 5/21/1992 1735 10.0U 0.5U 1.0U 1.0U 1.0U UN 1.0

BRGW-9 8/26/1992 1645 10.0U 0.5U 1.0U 1.0U UN 1.0

BRGW-9 12/22/1992 1340 20.0U 2.0 2.0U 2.0U UN 2.0

BRGW-9 7/16/1993 1640 2.0U 1.0U 1.0U 1.0U 1.0U U 1.0U 1.0UN 2.0

BRGW-9 1/26/1994 1240 2.0U 1.0U 1.0U 1.0U 1.0U U 1.0UN 2.0

BRGW-9 7/7/1994 1120 1.0U 1.0U 1.0U 1.0U 1.0U U 1.0U 1.0UJB%N 2.0

BRGW-9 1/12/1995 1155 1.0U 1.0U 1.0U 1.0U 1.0U U 1.0U 1.0UN 1.0

BRGW-9 7/21/1995 1300 0.5U 1.0U 0.5U 1.0U 0.5U URL% 1.0U 1.0UN 1.0

BRGW-9 7/21/1995 1300 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0ULD 1.0

BRGW-9 1/10/1996 1730 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0ULD 1.0

BRGW-9 1/10/1996 1730 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-9 7/16/1996 1520 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-9 1/7/1997 1205 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-9 7/8/1997 1440 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

Notes: 1. Units are ug/l unless otherwise noted; Blank indicates parameter was not analyzed.

2. Sample Codes: BFS - Blind Field Standard; BB - Bottle Blank; TB - Trip Blank; N - Natural;FB - Field Blank; FD - Field Duplicate.

3. Data Qualifiers; U - Undetected; R - Rejected; J - Estimated. X - Contaminated Field Blank; F% - Field Duplicate Relative % Differences are Outside Acceptable Limits; C# - Instrument Calibration Relative Standard Deviations are Outside Acceptable Limits; A - Blind Field Standard Results are Outside Acceptable Limits; S% - Laboratory Surrogate Spike Recoveries are Outside Acceptable Limits; M% - Laboratory Matrix Spike Recoveries Exceed Acceptable Limits; D% - Laboratory Duplicate Samples are Outside Acceptable Limits; L% - Laboratory control sample results are outside acceptable limits; H - Analysis Performed After Established Holding Time; B - Method Blank Shows Evidence of Contamination; * - The Material was Detected below the Level of ther Associated Value (PQL) but above the MDL; T - Trip Blank Shows Evidence of Contamination; Q - Due to Dilution, Quantification Down to the Montana Standard Could Not Be Achieved..

Bromo-dichloro-methane

Bromo-chloro-methane

Bromoform Bromo-methane n-Butyl-benzene sec-Butyl-benzene

Sample Site

Sample Code

Sample Date

Sample Time

BRGW-9 1/15/1998 1535 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-9 7/8/1998 1315 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-9 1/12/1999 1315 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-9 7/15/1999 1442 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-9 1/12/2000 900 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-9 7/13/2000 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-9 1/10/2001 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-9 7/12/2001 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-9 1/8/2002 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-9 7/9/2002 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-9 1/16/2003 857 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-9 7/16/2003 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-9 1/14/2004 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-9 7/19/2004 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-9 1/11/2005 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UD 1.0

BRGW-9 1/11/2005 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-9 7/21/2005 920 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-9 1/20/2006 1215 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-9 9/28/2006 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 0.5

BRGW-9 10/21/2008 1 0.5< 1.0< 0.5< 1.0< 0.5< < 1.0< 1.0<N 0.5

BRGW-10 2/28/1992 900 10.0U 0.5U 1.0U 1.0U UN 1.0

BRGW-10 5/21/1992 1620 10.0U 0.5U 1.0U 1.0U 1.0U UN 1.0

BRGW-10 8/27/1992 1630 10.0U 0.5U 1.0U 1.0U UN 1.0

BRGW-10 12/22/1992 1610 10.0U 1.0U 1.0U 1.0U UN 1.0

BRGW-10 7/16/1993 1645 2.0U 1.0U 1.0U 1.0U 1.0U U 1.0U 1.0UN 2.0

BRGW-10 1/26/1994 1015 2.0U 1.0U 1.0U 1.0U 1.0U U 1.0UN 2.0

BRGW-10 7/7/1994 1115 1.0U 1.0U 1.0U 1.0U 1.0U U 1.0U 1.0UJB%N 2.0

BRGW-10 1/11/1995 1450 0.5U 1.0U 0.5U 1.0U 0.5U UJB% 1.0U 1.0UN 1.0

BRGW-10 7/21/1995 1240 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-10 7/21/1995 1240 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0ULD 1.0

BRGW-10 1/10/1996 1600 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-10 7/16/1996 1430 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-10 1/7/1997 1130 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-10 7/8/1997 1305 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-10 1/15/1998 1525 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-10 7/8/1998 1210 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-10 1/12/1999 1355 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-10 7/14/1999 1440 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-10 1/4/2000 1630 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

Notes: 1. Units are ug/l unless otherwise noted; Blank indicates parameter was not analyzed.

2. Sample Codes: BFS - Blind Field Standard; BB - Bottle Blank; TB - Trip Blank; N - Natural;FB - Field Blank; FD - Field Duplicate.

3. Data Qualifiers; U - Undetected; R - Rejected; J - Estimated. X - Contaminated Field Blank; F% - Field Duplicate Relative % Differences are Outside Acceptable Limits; C# - Instrument Calibration Relative Standard Deviations are Outside Acceptable Limits; A - Blind Field Standard Results are Outside Acceptable Limits; S% - Laboratory Surrogate Spike Recoveries are Outside Acceptable Limits; M% - Laboratory Matrix Spike Recoveries Exceed Acceptable Limits; D% - Laboratory Duplicate Samples are Outside Acceptable Limits; L% - Laboratory control sample results are outside acceptable limits; H - Analysis Performed After Established Holding Time; B - Method Blank Shows Evidence of Contamination; * - The Material was Detected below the Level of ther Associated Value (PQL) but above the MDL; T - Trip Blank Shows Evidence of Contamination; Q - Due to Dilution, Quantification Down to the Montana Standard Could Not Be Achieved..

Bromo-dichloro-methane

Bromo-chloro-methane

Bromoform Bromo-methane n-Butyl-benzene sec-Butyl-benzene

Sample Site

Sample Code

Sample Date

Sample Time

BRGW-10 7/17/2000 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-10 1/10/2001 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-10 7/12/2001 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-10 1/7/2002 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-10 7/12/2002 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-10 1/17/2003 923 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-10 7/9/2003 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-10 1/14/2004 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-10 7/22/2004 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-10 1/12/2005 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-10 1/12/2005 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UD 1.0

BRGW-10 7/22/2005 1038 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-10 1/16/2006 1125 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-10 9/29/2006 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 0.5

BRGW-10 10/22/2008 0 0.5< 1.0< 0.5< 1.0< 0.5< < 1.0< 1.0<N 0.5

BRGW-30S 2/27/1992 1535 10.0U 0.5U 1.0U 1.0U UN 1.0

BRGW-30S 5/21/1992 1130 10.0U 0.5U 1.0U 1.0U 1.0U UN 1.0

BRGW-30S 8/25/1992 1530 10.0U 0.5U 1.0U 1.0U UN 1.0

BRGW-30S 12/17/1992 1415 10.0U 1.0U 1.0U 1.0U UN 1.0

BRGW-31D 2/27/1992 800 10.0U 0.5U 1.0U 1.0U UN 1.0

BRGW-31D 5/20/1992 1510 10.0U 0.5U 1.0U 1.0U 1.0U UN 1.0

BRGW-31D 8/25/1992 1630 10.0U 0.5U 1.0U 1.0U UN 1.0

BRGW-31D 12/21/1992 1645 10.0U 1.0U 1.0U 1.0U UN 1.0

BRGW-31D 1/25/1994 1240 2.0U 1.0U 1.0U 1.0U 1.0U 1.0UN

BRGW-31D 7/7/1994 1225 1.0U 1.0U 1.0U 1.0U 1.0U U 1.0U 1.0UN 2.0

BRGW-31D 1/10/1995 1435 0.5UJC# 1.0UJC# 0.5UJC# 1.0UJC# 0.5UJC# U*JC#B% 1.0UJC# 1.0UJC#N 1.0

BRGW-31D 7/19/1995 1325 0.5U 1.0U 0.5U 1.0U 0.5UJL% URL% 1.0U 1.0UN 1.0

BRGW-31D 1/9/1996 1225 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-31D 7/16/1996 1130 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-31D 7/16/1996 1130 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0ULD 1.0

BRGW-31D 1/7/1997 1320 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UD 1.0

BRGW-31D 1/7/1997 1310 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-31D 7/8/1997 1545 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-31D 1/14/1998 1450 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-31D 7/7/1998 1516 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UFD 1.0

BRGW-31D 7/7/1998 1525 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-31D 1/12/1999 1506 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-31D 7/15/1999 1153 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-31D 1/10/2000 1412 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

Notes: 1. Units are ug/l unless otherwise noted; Blank indicates parameter was not analyzed.

2. Sample Codes: BFS - Blind Field Standard; BB - Bottle Blank; TB - Trip Blank; N - Natural;FB - Field Blank; FD - Field Duplicate.

3. Data Qualifiers; U - Undetected; R - Rejected; J - Estimated. X - Contaminated Field Blank; F% - Field Duplicate Relative % Differences are Outside Acceptable Limits; C# - Instrument Calibration Relative Standard Deviations are Outside Acceptable Limits; A - Blind Field Standard Results are Outside Acceptable Limits; S% - Laboratory Surrogate Spike Recoveries are Outside Acceptable Limits; M% - Laboratory Matrix Spike Recoveries Exceed Acceptable Limits; D% - Laboratory Duplicate Samples are Outside Acceptable Limits; L% - Laboratory control sample results are outside acceptable limits; H - Analysis Performed After Established Holding Time; B - Method Blank Shows Evidence of Contamination; * - The Material was Detected below the Level of ther Associated Value (PQL) but above the MDL; T - Trip Blank Shows Evidence of Contamination; Q - Due to Dilution, Quantification Down to the Montana Standard Could Not Be Achieved..

Bromo-dichloro-methane

Bromo-chloro-methane

Bromoform Bromo-methane n-Butyl-benzene sec-Butyl-benzene

Sample Site

Sample Code

Sample Date

Sample Time

BRGW-31D 7/14/2000 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-31D 11/14/2000 1340 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-31D 12/19/2000 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-31D 1/10/2001 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-31D 7/11/2001 1.0U 2.0U 1.0U 2.0U 1.0U U 2.0U 2.0UN 2.0

BRGW-31D 1/8/2002 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-31D 7/8/2002 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-31D 1/15/2003 1507 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-31D 1/15/2003 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UD 1.0

BRGW-31D 7/16/2003 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-31D 1/13/2004 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-31D 7/20/2004 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-31D 1/11/2005 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-31D 7/20/2005 1547 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-31D 1/20/2006 1024 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-31D 9/28/2006 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 0.5

BRGW-31D 10/22/2008 0 0.5< 1.0< 0.5< 1.0< 0.5< < 1.0< 1.0<N 0.5

BRGW-32S 2/28/1992 1000 10.0U 0.5U 1.0U 1.0U UN 1.0

BRGW-32S 5/20/1992 1500 10.0U 0.5U 1.0U 1.0U 1.0U UN 1.0

BRGW-32S 8/26/1992 1545 10.0U 0.5U 1.0U 1.0U UN 1.0

BRGW-32S 12/17/1992 1520 10.0U 1.0U 1.0U 1.0U UN 1.0

BRGW-32S 1/25/1994 1300 2.0U 1.0U 1.0U 1.0U 1.0U 1.0UN

BRGW-32S 7/29/1994 1215 1.0U 1.0U 1.0U 1.0U 1.0U U 1.0U 1.0UN 2.0

BRGW-32S 1/10/1995 1410 0.5UJC# 1.0UJC# 0.5UJC# 1.0UJC# 0.5UJC# U*JC#B% 1.0UJC# 1.0UJC#N 1.0

BRGW-32S 7/19/1995 1315 0.5U 1.0U 0.5U 1.0U 0.5URL% U 1.0U 1.0UN 1.0

BRGW-32S 7/19/1995 1315 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0ULD 1.0

BRGW-32S 1/9/1996 1210 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-32S 7/16/1996 1125 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-32S 1/7/1997 1325 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-32S 7/8/1997 1552 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-32S 1/14/1998 1445 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-32S 7/7/1998 1515 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-32S 1/12/1999 1602 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-32S 7/14/1999 1510 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-32S 1/4/2000 1535 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-32S 7/13/2000 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-32S 1/10/2001 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-32S 7/11/2001 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-32S 1/8/2002 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

Notes: 1. Units are ug/l unless otherwise noted; Blank indicates parameter was not analyzed.

2. Sample Codes: BFS - Blind Field Standard; BB - Bottle Blank; TB - Trip Blank; N - Natural;FB - Field Blank; FD - Field Duplicate.

3. Data Qualifiers; U - Undetected; R - Rejected; J - Estimated. X - Contaminated Field Blank; F% - Field Duplicate Relative % Differences are Outside Acceptable Limits; C# - Instrument Calibration Relative Standard Deviations are Outside Acceptable Limits; A - Blind Field Standard Results are Outside Acceptable Limits; S% - Laboratory Surrogate Spike Recoveries are Outside Acceptable Limits; M% - Laboratory Matrix Spike Recoveries Exceed Acceptable Limits; D% - Laboratory Duplicate Samples are Outside Acceptable Limits; L% - Laboratory control sample results are outside acceptable limits; H - Analysis Performed After Established Holding Time; B - Method Blank Shows Evidence of Contamination; * - The Material was Detected below the Level of ther Associated Value (PQL) but above the MDL; T - Trip Blank Shows Evidence of Contamination; Q - Due to Dilution, Quantification Down to the Montana Standard Could Not Be Achieved..

Bromo-dichloro-methane

Bromo-chloro-methane

Bromoform Bromo-methane n-Butyl-benzene sec-Butyl-benzene

Sample Site

Sample Code

Sample Date

Sample Time

BRGW-32S 7/15/2002 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-32S 1/17/2003 1000 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-32S 7/9/2003 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-32S 1/13/2004 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-32S 7/22/2004 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-32D 1/11/2005 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-32S 7/22/2005 1500 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-32S 1/16/2006 1155 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-32S 9/29/2006 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 0.5

BRGW-32S 10/22/2008 0 0.5< 1.0< 0.5< 1.0< 0.5< < 1.0< 1.0<N 0.5

BRGW-33S 2/28/1992 1200 10.0U 0.5U 1.0U 1.0U UN 1.0

BRGW-33S 5/21/1992 1740 10.0U 0.5U 1.0U 1.0U 1.0U UN 1.0

BRGW-33S 8/25/1992 1630 10.0U 0.5U 1.0U 1.0U UN 1.0

BRGW-33S 12/18/1992 1430 10.0U 1.0U 1.0U 1.0U UN 1.0

BRGW-33S 7/12/1993 1300 2.0U 1.0U 1.0U 1.0U 1.0U U 1.0U 1.0UN 2.0

BRGW-33S 1/25/1994 1420 2.0U 1.0U 1.0U 1.0U 1.0U U 1.0UN 2.0

BRGW-33S 7/6/1994 835 1.0U 1.0U 1.0U 1.0U 1.0U U 1.0ULD 2.0

BRGW-33S 7/6/1994 835 1.0U 1.0U 1.0U 1.0U 1.0U U 1.0U 1.0UN 2.0

BRGW-33S 1/10/1995 850 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0ULD 1.0

BRGW-33S 1/10/1995 850 0.5UJC# 1.0UJC# 0.5UJC# 1.0UJC# 0.5UJC# UJC#B% 1.0UJC# 1.0UJC#N 1.0

BRGW-33S 7/19/1995 1130 0.5U 1.0U 0.5U 1.0U 0.5URL% U 1.0U 1.0UN 1.0

BRGW-33S 1/9/1996 1040 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-33S 7/16/1996 1510 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-33S 1/7/1997 855 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-33S 7/8/1997 1710 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-33S 1/13/1998 1620 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-33S 7/9/1998 928 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-33S 1/12/1999 900 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-33S 7/14/1999 1448 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-33S 1/4/2000 1600 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-33S 7/12/2000 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-33S 1/10/2001 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-33S 7/10/2001 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-33S 1/8/2002 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-33S 7/15/2002 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-33S 1/17/2003 801 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-33S 7/9/2003 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-33S 1/14/2004 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-33S 7/21/2004 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

Notes: 1. Units are ug/l unless otherwise noted; Blank indicates parameter was not analyzed.

2. Sample Codes: BFS - Blind Field Standard; BB - Bottle Blank; TB - Trip Blank; N - Natural;FB - Field Blank; FD - Field Duplicate.

3. Data Qualifiers; U - Undetected; R - Rejected; J - Estimated. X - Contaminated Field Blank; F% - Field Duplicate Relative % Differences are Outside Acceptable Limits; C# - Instrument Calibration Relative Standard Deviations are Outside Acceptable Limits; A - Blind Field Standard Results are Outside Acceptable Limits; S% - Laboratory Surrogate Spike Recoveries are Outside Acceptable Limits; M% - Laboratory Matrix Spike Recoveries Exceed Acceptable Limits; D% - Laboratory Duplicate Samples are Outside Acceptable Limits; L% - Laboratory control sample results are outside acceptable limits; H - Analysis Performed After Established Holding Time; B - Method Blank Shows Evidence of Contamination; * - The Material was Detected below the Level of ther Associated Value (PQL) but above the MDL; T - Trip Blank Shows Evidence of Contamination; Q - Due to Dilution, Quantification Down to the Montana Standard Could Not Be Achieved..

Bromo-dichloro-methane

Bromo-chloro-methane

Bromoform Bromo-methane n-Butyl-benzene sec-Butyl-benzene

Sample Site

Sample Code

Sample Date

Sample Time

BRGW-33S 1/12/2005 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-33S 7/22/2005 1005 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-33S 1/16/2006 1040 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-33S 9/29/2006 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 0.5

BRGW-33S 10/22/2008 1 0.5< 1.0< 0.5< 1.0< 0.5< < 1.0< 1.0<N 0.5

BRGW-34D 2/27/1992 1630 10.0U 0.5U 1.0U 1.0U UN 1.0

BRGW-34D 5/21/1992 1903 10.0U 0.5U 1.0U 1.0U 1.0U UN 1.0

BRGW-34D 8/26/1992 1500 10.0U 0.5U 1.0U 1.0U UN 1.0

BRGW-34D 12/18/1992 1350 10.0U 1.0U 1.0U 1.0U UN 1.0

BRGW-34D 7/13/1993 900 2.0U 1.0U 1.0U 1.0U 1.0U U 1.0U 1.0UN 2.0

BRGW-34D 1/27/1994 1145 2.0U 1.0U 1.0U 1.0U 1.0U 1.0UN

BRGW-34D 7/7/1994 955 1.0U 1.0U 1.0U 1.0U 1.0U U 1.0U 1.0UN 2.0

BRGW-34D 1/12/1995 1255 1.0U 1.0U 1.0U 1.0U 1.0U U 1.0U 1.0UN 1.0

BRGW-34D 7/19/1995 1615 0.5U 1.0U 0.5U 1.0U 0.5URL% U 1.0U 1.0UN 1.0

BRGW-34D 1/10/1996 1030 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-34D 7/17/1996 830 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-34D 1/6/1997 1425 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-34D 7/9/1997 1100 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-34D 1/15/1998 1036 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-34D 7/8/1998 1425 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-34D 1/11/1999 1426 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-34D 7/15/1999 1030 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-34D 1/10/2000 1320 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-34D 7/12/2000 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-34D 9/15/2000 1125 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-34D 10/10/2000 920 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-34D 11/14/2000 1130 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-34D 12/18/2000 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-34D 1/10/2001 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-34D 7/11/2001 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-34D 1/10/2002 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-34D 7/8/2002 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-34D 1/15/2003 1047 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-34D 7/10/2003 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-34D 1/13/2004 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-34D 7/19/2004 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-34D 1/11/2005 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-34D 7/21/2005 845 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-34D 1/19/2006 1351 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

Notes: 1. Units are ug/l unless otherwise noted; Blank indicates parameter was not analyzed.

2. Sample Codes: BFS - Blind Field Standard; BB - Bottle Blank; TB - Trip Blank; N - Natural;FB - Field Blank; FD - Field Duplicate.

3. Data Qualifiers; U - Undetected; R - Rejected; J - Estimated. X - Contaminated Field Blank; F% - Field Duplicate Relative % Differences are Outside Acceptable Limits; C# - Instrument Calibration Relative Standard Deviations are Outside Acceptable Limits; A - Blind Field Standard Results are Outside Acceptable Limits; S% - Laboratory Surrogate Spike Recoveries are Outside Acceptable Limits; M% - Laboratory Matrix Spike Recoveries Exceed Acceptable Limits; D% - Laboratory Duplicate Samples are Outside Acceptable Limits; L% - Laboratory control sample results are outside acceptable limits; H - Analysis Performed After Established Holding Time; B - Method Blank Shows Evidence of Contamination; * - The Material was Detected below the Level of ther Associated Value (PQL) but above the MDL; T - Trip Blank Shows Evidence of Contamination; Q - Due to Dilution, Quantification Down to the Montana Standard Could Not Be Achieved..

Bromo-dichloro-methane

Bromo-chloro-methane

Bromoform Bromo-methane n-Butyl-benzene sec-Butyl-benzene

Sample Site

Sample Code

Sample Date

Sample Time

BRGW-34D 9/28/2006 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 0.5

BRGW-34D 10/21/2008 1 0.5< 1.0< 0.5< 1.0< 0.5< < 1.0< 1.0<N 0.5

BRGW-35S 2/28/1992 1045 10.0U 0.5U 1.0U 1.0U UN 1.0

BRGW-35S 5/21/1992 1930 10.0U 0.5U 1.0U 1.0U 1.0U UN 1.0

BRGW-35S 8/26/1992 1515 10.0U 0.5U 1.0U 1.0U UN 1.0

BRGW-35S 12/17/1992 1430 10.0U 1.0U 1.0U 1.0U UN 1.0

BRGW-35S 7/12/1993 1445 2.0U 1.0U 1.0U 1.0U 1.0U U 1.0U 1.0UN 2.0

BRGW-36D 2/26/1992 1725 10.0U 0.5U 1.0U 1.0U UN 1.0

BRGW-36D 5/20/1992 1735 30.0U 1.3U 2.5U 2.5U 2.5U UN 2.5

BRGW-36D 8/26/1992 1500 10.0U 0.5U 1.0U 1.0U UN 1.0

BRGW-36D 12/22/1992 1530 100.0U 10.0U 10.0U 10.0U UN 10.0

BRGW-36D 7/16/1993 1535 2.0U 1.0U 1.0U 1.0U 1.0U U 1.0U 1.0UN 2.0

BRGW-36D 7/7/1994 1805 1.0U 1.0U 1.0U 1.0U 1.0U U 1.0U 1.0UN 2.0

BRGW-36D 1/12/1995 1520 50.0U 50.0U 50.0U 50.0U 50.0U U 50.0U 50.0UN 50.0

BRGW-36D 7/21/1995 1605 0.5U 1.0U 0.5U 1.0U 0.5U URL% 1.0U 1.0UN 1.0

BRGW-36D 1/22/1996 915 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-36D 7/17/1996 1530 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-36D 1/9/1997 1050 2.5U 5.0U 2.5U 5.0U 2.5U U 5.0U 5.0UN 5.0

BRGW-36D 7/7/1997 1530 2.5U 5.0U 2.5U 5.0U 2.5U U 5.0U 5.0UN 5.0

BRGW-36D 1/15/1998 1705 2.5U 5.0U 2.5U 5.0U 2.5U U 5.0U 5.0UN 5.0

BRGW-36D 7/7/1998 950 2.5U 5.0U 2.5U 5.0U 2.5U U 5.0U 5.0UN 5.0

BRGW-36D 1/13/1999 1245 2.5U 5.0U 2.5U 5.0U 2.5U U 5.0U 5.0UN 5.0

BRGW-36D 7/16/1999 1435 25.0UQ 50.0U 25.0U 50.0U 25.0U U 50.0U 50.0UN 50.0

BRGW-36D 1/12/2000 1450 12.5U 25.0U 12.5U 25.0U 12.5U U 25.0U 25.0UN 25.0

BRGW-36D 1/12/2000 12.5U 25.0U 12.5U 25.0U 12.5U U 25.0U 25.0UD 25.0

BRGW-36D 7/17/2000 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-36D 9/15/2000 1615 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-36D 10/9/2000 1520 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-36D 11/14/2000 1545 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-36D 12/19/2000 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-36D 1/12/2001 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-36D 7/16/2001 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-36D 1/9/2002 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-36D 7/12/2002 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-36D 1/16/2003 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UD 1.0

BRGW-36D 1/16/2003 1309 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-36D 7/17/2003 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-36D 1/16/2004 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-36D 7/22/2004 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

Notes: 1. Units are ug/l unless otherwise noted; Blank indicates parameter was not analyzed.

2. Sample Codes: BFS - Blind Field Standard; BB - Bottle Blank; TB - Trip Blank; N - Natural;FB - Field Blank; FD - Field Duplicate.

3. Data Qualifiers; U - Undetected; R - Rejected; J - Estimated. X - Contaminated Field Blank; F% - Field Duplicate Relative % Differences are Outside Acceptable Limits; C# - Instrument Calibration Relative Standard Deviations are Outside Acceptable Limits; A - Blind Field Standard Results are Outside Acceptable Limits; S% - Laboratory Surrogate Spike Recoveries are Outside Acceptable Limits; M% - Laboratory Matrix Spike Recoveries Exceed Acceptable Limits; D% - Laboratory Duplicate Samples are Outside Acceptable Limits; L% - Laboratory control sample results are outside acceptable limits; H - Analysis Performed After Established Holding Time; B - Method Blank Shows Evidence of Contamination; * - The Material was Detected below the Level of ther Associated Value (PQL) but above the MDL; T - Trip Blank Shows Evidence of Contamination; Q - Due to Dilution, Quantification Down to the Montana Standard Could Not Be Achieved..

Bromo-dichloro-methane

Bromo-chloro-methane

Bromoform Bromo-methane n-Butyl-benzene sec-Butyl-benzene

Sample Site

Sample Code

Sample Date

Sample Time

BRGW-36D 1/12/2005 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-36D 7/21/2005 1615 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-36D 1/23/2006 1000 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-36D 10/2/2006 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 0.5

BRGW-36D 10/22/2008 1 0.5< 1.0< 0.5< 1.0< 0.5< < 1.0< 1.0<N 0.5

BRGW-37S 2/27/1992 1430 10.0U 0.5U 1.0U 1.0U UN 1.0

BRGW-37S 5/20/1992 1745 2500.0U 125.0U 250.0U 250.0U 250.0U UN 250.0

BRGW-37S 8/27/1992 1700 10.0U 0.5U 1.0U 1.0U UN 1.0

BRGW-37S 12/22/1992 1645 20.0U 2.0U 2.0U 2.0U UN 2.0

BRGW-37S 7/14/1993 1345 2.0U 1.0U 1.0U 1.0U 1.0U U 1.0U 1.0UFD 2.0

BRGW-37S 7/14/1993 1345 2.0U 1.0U 1.0U 1.0U 1.0U U 1.0U 1.0UN 2.0

BRGW-37S 1/27/1994 1035 2.0U 1.0U 1.0U 1.0U 1.0U 1.0UN

BRGW-37S 7/7/1994 1900 1.0U 1.0U 1.0U 1.0U 1.0U U 1.0ULD 2.0

BRGW-37S 7/7/1994 1915 1.0U 1.0U 1.0U 1.0U 1.0U U 1.0U 1.0UFD 2.0

BRGW-37S 7/7/1994 1900 1.0U 1.0U 1.0U 1.0U 1.0U U 1.0U 1.0UJB%N 2.0

BRGW-37S 1/12/1995 1505 100.0U 100.0U 100.0U 100.0U 100.0U U 100.0U 100.0UN 100.0

BRGW-37S 7/21/1995 1555 0.5U 1.0U 0.5U 1.0U 0.5UJL% URL% 1.0U 1.0UN 1.0

BRGW-37S 1/12/1996 1250 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-37S 7/17/1996 1500 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-37S 1/9/1997 1040 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-37S 7/7/1997 1535 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-37S 1/15/1998 1645 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-37S 7/7/1998 940 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-37S 1/13/1999 1305 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-37S 7/16/1999 920 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-37S 1/6/2000 850 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-37S 9/15/2000 1045 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-37S 10/10/2000 1222 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-37S 11/14/2000 1635 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-37S 12/19/2000 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-37S 1/12/2001 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-37S 7/16/2001 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-37S 1/7/2002 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-37S 7/12/2002 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UD 1.0

BRGW-37S 7/12/2002 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-37S 1/17/2003 1132 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-37S 7/9/2003 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-37S 1/16/2004 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-37S 7/22/2004 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

Notes: 1. Units are ug/l unless otherwise noted; Blank indicates parameter was not analyzed.

2. Sample Codes: BFS - Blind Field Standard; BB - Bottle Blank; TB - Trip Blank; N - Natural;FB - Field Blank; FD - Field Duplicate.

3. Data Qualifiers; U - Undetected; R - Rejected; J - Estimated. X - Contaminated Field Blank; F% - Field Duplicate Relative % Differences are Outside Acceptable Limits; C# - Instrument Calibration Relative Standard Deviations are Outside Acceptable Limits; A - Blind Field Standard Results are Outside Acceptable Limits; S% - Laboratory Surrogate Spike Recoveries are Outside Acceptable Limits; M% - Laboratory Matrix Spike Recoveries Exceed Acceptable Limits; D% - Laboratory Duplicate Samples are Outside Acceptable Limits; L% - Laboratory control sample results are outside acceptable limits; H - Analysis Performed After Established Holding Time; B - Method Blank Shows Evidence of Contamination; * - The Material was Detected below the Level of ther Associated Value (PQL) but above the MDL; T - Trip Blank Shows Evidence of Contamination; Q - Due to Dilution, Quantification Down to the Montana Standard Could Not Be Achieved..

Bromo-dichloro-methane

Bromo-chloro-methane

Bromoform Bromo-methane n-Butyl-benzene sec-Butyl-benzene

Sample Site

Sample Code

Sample Date

Sample Time

BRGW-37S 1/17/2005 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-37S 7/25/2005 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-37S 1/16/2006 1320 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-37S 10/3/2006 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 0.5

BRGW-37S 10/23/2008 0 0.5< 1.0< 0.5< 1.0< 0.5< < 1.0< 1.0<N 0.5

BRGW-38D 2/26/1992 1625 10.0U 0.5U 1.0U 1.0U UN 1.0

BRGW-38D 5/19/1992 1930 10.0U 0.5U 1.0U 1.0U 1.0U UN 1.0

BRGW-38D 8/25/1992 1820 10.0U 0.5U 1.0U 1.0U UN 1.0

BRGW-38D 12/17/1992 1700 10.0U 1.0U 1.0U 1.0U UN 1.0

BRGW-38D 7/15/1993 1710 2.0U 1.0U 1.0U 1.0U 1.0U U 1.0U 1.0UN 2.0

BRGW-38D 7/15/1993 1710 2.0U 1.0U 1.0U 1.0U 1.0U U 1.0U 1.0ULD 2.0

BRGW-38D 11/14/2000 1430 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-38D 11/14/2000 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UD 1.0

BRGW-38D 7/16/2001 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-38D 1/9/2002 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-38D 7/11/2002 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-38D 1/16/2003 1051 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-38D 7/17/2003 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-38D 7/17/2003 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UD 1.0

BRGW-38D 1/15/2004 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-38D 1/16/2004 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UD 1.0

BRGW-38D 7/22/2004 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-38D 1/12/2005 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-38D 7/22/2005 1405 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-38D 1/23/2006 1150 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-38D 10/2/2006 0.5 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 0.5

BRGW-38D 10/22/2008 1 0.5< 1.0< 0.5< 1.0< 0.5< < 1.0< 1.0<N 0.5

BRGW-39S 2/27/1992 915 10.0U 1.0 1.0U 1.0U UN 1.0

BRGW-39S 5/19/1992 1930 10.0U 0.7 1.0U 1.0U 1.0U UN 1.0

BRGW-39S 8/25/1992 1800 10.0U 0.7 1.0U 1.0U UN 1.0

BRGW-39S 12/22/1992 1300 10.0U 1.0U 1.0U 1.0U UN 1.0

BRGW-39S 7/14/1993 1635 2.0U 1.0U 1.0U 1.0U 1.0U U 1.0U 1.0UN 2.0

BRGW-39S 11/14/2000 1515 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-39S 1/8/2002 0.6 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-39S 7/12/2002 0.8 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-39S 1/17/2003 1059 0.6 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-39S 7/9/2003 0.5 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-39S 1/16/2004 0.6 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-39S 8/18/2004 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

Notes: 1. Units are ug/l unless otherwise noted; Blank indicates parameter was not analyzed.

2. Sample Codes: BFS - Blind Field Standard; BB - Bottle Blank; TB - Trip Blank; N - Natural;FB - Field Blank; FD - Field Duplicate.

3. Data Qualifiers; U - Undetected; R - Rejected; J - Estimated. X - Contaminated Field Blank; F% - Field Duplicate Relative % Differences are Outside Acceptable Limits; C# - Instrument Calibration Relative Standard Deviations are Outside Acceptable Limits; A - Blind Field Standard Results are Outside Acceptable Limits; S% - Laboratory Surrogate Spike Recoveries are Outside Acceptable Limits; M% - Laboratory Matrix Spike Recoveries Exceed Acceptable Limits; D% - Laboratory Duplicate Samples are Outside Acceptable Limits; L% - Laboratory control sample results are outside acceptable limits; H - Analysis Performed After Established Holding Time; B - Method Blank Shows Evidence of Contamination; * - The Material was Detected below the Level of ther Associated Value (PQL) but above the MDL; T - Trip Blank Shows Evidence of Contamination; Q - Due to Dilution, Quantification Down to the Montana Standard Could Not Be Achieved..

Bromo-dichloro-methane

Bromo-chloro-methane

Bromoform Bromo-methane n-Butyl-benzene sec-Butyl-benzene

Sample Site

Sample Code

Sample Date

Sample Time

BRGW-39S 1/17/2005 0.5 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-39S 7/22/2005 1405 0.8U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-39S 1/16/2006 1403 0.8 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-39S 9/29/2006 0.5 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 0.5

BRGW-39S 10/22/2008 1 0.5< 1.0< 0.5< 1.0< 0.5< < 1.0< 1.0<N 0.5

BRGW-40D 2/26/1992 1745 10.0U 0.5U 1.0U 1.0U UN 1.0

BRGW-40D 5/20/1992 1615 10.0U 0.5U 1.0U 1.0U 1.0U UN 1.0

BRGW-40D 8/27/1992 1845 10.0U 0.5U 1.0U 1.0U UN 1.0

BRGW-40D 12/18/1992 1235 10.0U 1.0U 1.0U 1.0UN 1.0

BRGW-40D 7/16/1993 1145 2.0U 1.0U 1.0U 1.0U 1.0U U 1.0U 1.0UN 2.0

BRGW-40D 7/16/1993 1145 104.0% 103.0% 108.0% 115.0% 120.0% % 101.0% 101.0%LS 119.0

BRGW-40D 1/9/1997 1210 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UD 1.0

BRGW-40D 1/9/1997 1205 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-41S 2/27/1992 1110 10.0U 2.0 1.0U 1.0U UN 1.0

BRGW-41S 5/20/1992 1625 10.0U 0.5U 1.0U 1.0U 1.0U UN 1.0

BRGW-41S 8/27/1992 1930 10.0U 0.5U 1.0U 1.0U UN 1.0

BRGW-41S 12/21/1992 1415 50.0U 5.0U 5.0U 5.0U UN 5.0

BRGW-41S 7/14/1993 1730 2.0U 1.0U 1.0U 1.0U 1.0U U 1.0U 1.0UN 2.0

BRGW-41S 1/9/1997 1155 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-41S 1/14/1999 1020 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-41S 7/14/2000 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-41S 1/15/2001 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-41S 1/8/2002 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-41S 1/8/2002 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UD 1.0

BRGW-41S 7/12/2002 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-41S 1/17/2003 1247 0.6 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-41S 7/9/2003 0.5 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-41S 1/15/2004 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-41S 8/18/2004 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-41S 1/17/2005 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-41S 1/16/2006 0.0N 0.0

BRGW-42D 2/26/1992 1220 10.0U 0.5U 1.0U 1.0U UN 1.0

BRGW-42D 5/19/1992 1800 10.0U 0.5U 1.0U 1.0U 1.0U UN 1.0

BRGW-42D 8/25/1992 1745 10.0U 0.5U 1.0U 1.0U UN 1.0

BRGW-42D 12/17/1992 1630 10.0U 1.0U 1.0U 1.0U UN 1.0

BRGW-43S 2/28/1992 815 10.0U 0.5U 1.0U 1.0U UN 1.0

BRGW-43S 5/19/1992 1750 10.0U 0.5U 1.0U 1.0U 1.0U UN 1.0

BRGW-43S 8/25/1992 1700 10.0U 0.5U 1.0U 1.0U UN 1.0

BRGW-43S 12/17/1992 1550 10.0U 1.0U 1.0U 1.0U UN 1.0

Notes: 1. Units are ug/l unless otherwise noted; Blank indicates parameter was not analyzed.

2. Sample Codes: BFS - Blind Field Standard; BB - Bottle Blank; TB - Trip Blank; N - Natural;FB - Field Blank; FD - Field Duplicate.

3. Data Qualifiers; U - Undetected; R - Rejected; J - Estimated. X - Contaminated Field Blank; F% - Field Duplicate Relative % Differences are Outside Acceptable Limits; C# - Instrument Calibration Relative Standard Deviations are Outside Acceptable Limits; A - Blind Field Standard Results are Outside Acceptable Limits; S% - Laboratory Surrogate Spike Recoveries are Outside Acceptable Limits; M% - Laboratory Matrix Spike Recoveries Exceed Acceptable Limits; D% - Laboratory Duplicate Samples are Outside Acceptable Limits; L% - Laboratory control sample results are outside acceptable limits; H - Analysis Performed After Established Holding Time; B - Method Blank Shows Evidence of Contamination; * - The Material was Detected below the Level of ther Associated Value (PQL) but above the MDL; T - Trip Blank Shows Evidence of Contamination; Q - Due to Dilution, Quantification Down to the Montana Standard Could Not Be Achieved..

Bromo-dichloro-methane

Bromo-chloro-methane

Bromoform Bromo-methane n-Butyl-benzene sec-Butyl-benzene

Sample Site

Sample Code

Sample Date

Sample Time

BRGW-44S 7/14/1993 1000 2.0U 1.0U 1.0U 1.0U 1.0U U 1.0U 1.0UN 2.0

BRGW-45S 7/14/1993 1105 2.0U 1.0U 1.0U 1.0U 1.0U U 1.0U 1.0UN 2.0

BRGW-46S 7/14/1993 1220 2.0U 1.0U 1.0U 1.0U 1.0U U 1.0U 1.0UN 2.0

BRGW-47S 7/14/1993 1535 2.0U 1.0U 1.0U 1.0U 1.0U U 1.0U 1.0UN 2.0

BRGW-47S 7/14/1993 1535 102.0% 95.0% 106.0% 103.0% 108.0% % 95.0% 96.0%LS 42.0

BRGW-48S 7/14/1993 1200 2.0U 1.0U 1.0U 1.0U 1.0U U 1.0U 1.0UN 2.0

BRGW-48S 7/17/1996 1415 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-48S 1/9/1997 1330 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-48S 1/16/1998 1508 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-48S 7/6/1998 1555 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-48S 1/14/1999 939 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-48S 7/16/1999 1240 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-48S 1/12/2000 1412 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-48S 7/17/2000 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-48S 1/15/2001 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-48S 7/16/2001 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-48S 1/9/2002 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-48S 7/12/2002 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-48S 1/16/2003 1610 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-48S 7/17/2003 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-48S 1/16/2004 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-48S 7/22/2004 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-48S 1/12/2005 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-48S 7/22/2005 1205 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-48S 1/23/2006 1305 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-48S 10/2/2006 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 0.5

BRGW-48S 10/23/2008 0 0.5< 1.0< 0.5< 1.0< 0.5< < 1.0< 1.0<N 0.5

BRGW-49S 7/14/1993 1425 2.0U 1.0U 1.0U 1.0U 1.0U U 1.0U 1.0UN 2.0

BRGW-49S 1/27/1994 1015 2.0U 1.0U 1.0U 1.0U 1.0U 1.0UN

BRGW-49S 7/7/1994 1455 1.0U 1.0U 1.0U 1.0U 1.0U U 1.0U 1.0UN 2.0

BRGW-49S 1/11/1995 1050 0.5U 1.0U 0.5U 1.0U 0.5U UJB% 1.0U 1.0UN 1.0

BRGW-49S 7/21/1995 1355 0.5U 1.0U 0.5U 1.0U 0.5UJL% URL% 1.0U 1.0UN 1.0

BRGW-49S 1/11/1996 1510 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-49S 7/16/1996 1315 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-49S 1/9/1997 905 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-49S 7/8/1997 1055 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-49S 1/15/1998 1140 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-49S 7/7/1998 1110 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-50D 7/16/1993 1025 2.0U 1.0U 1.0U 1.0U 1.0U U 1.0U 1.0UN 2.0

Notes: 1. Units are ug/l unless otherwise noted; Blank indicates parameter was not analyzed.

2. Sample Codes: BFS - Blind Field Standard; BB - Bottle Blank; TB - Trip Blank; N - Natural;FB - Field Blank; FD - Field Duplicate.

3. Data Qualifiers; U - Undetected; R - Rejected; J - Estimated. X - Contaminated Field Blank; F% - Field Duplicate Relative % Differences are Outside Acceptable Limits; C# - Instrument Calibration Relative Standard Deviations are Outside Acceptable Limits; A - Blind Field Standard Results are Outside Acceptable Limits; S% - Laboratory Surrogate Spike Recoveries are Outside Acceptable Limits; M% - Laboratory Matrix Spike Recoveries Exceed Acceptable Limits; D% - Laboratory Duplicate Samples are Outside Acceptable Limits; L% - Laboratory control sample results are outside acceptable limits; H - Analysis Performed After Established Holding Time; B - Method Blank Shows Evidence of Contamination; * - The Material was Detected below the Level of ther Associated Value (PQL) but above the MDL; T - Trip Blank Shows Evidence of Contamination; Q - Due to Dilution, Quantification Down to the Montana Standard Could Not Be Achieved..

Bromo-dichloro-methane

Bromo-chloro-methane

Bromoform Bromo-methane n-Butyl-benzene sec-Butyl-benzene

Sample Site

Sample Code

Sample Date

Sample Time

BRGW-50D 1/26/1994 1455 2.0U 1.0U 1.0U 1.0U 1.0U U 1.0UN 2.0

BRGW-50D 7/7/1994 1525 1.0U 1.0U 1.0U 1.0U 1.0U U 1.0U 1.0UJB%N 2.0

BRGW-50D 1/12/1995 950 1.0U 1.0U 1.0U 1.0U 1.0U U 1.0U 1.0UN 1.0

BRGW-50D 1/12/1995 1000 1.0U 1.0U 1.0U 1.0U 1.0U U 1.0U 1.0UFD 1.0

BRGW-50D 7/21/1995 1405 0.5U 1.0U 0.5U 1.0U 0.5U URL% 1.0U 1.0UN 1.0

BRGW-50D 1/11/1996 1500 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-50D 7/16/1996 1330 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-50D 1/9/1997 930 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-50D 7/8/1997 1153 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-50D 1/15/1998 1215 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-50D 7/7/1998 1115 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-50D 1/13/1999 1012 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-50D 1/13/1999 1012 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UD 1.0

BRGW-50D 7/15/1999 1855 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-50D 1/5/2000 1620 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-50D 7/14/2000 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-50D 1/11/2001 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-50D 7/13/2001 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-50D 1/9/2002 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-50D 7/10/2002 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-50D 2/4/2003 1409

BRGW-50D 2/4/2003 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-50D 7/17/2003 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-50D 1/15/2004 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-50D 7/21/2004 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-50D 1/12/2005 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-50D 7/22/2005 915 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-50D 1/23/2006 1100 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 1.0

BRGW-50D 10/2/2006 0.5U 1.0U 0.5U 1.0U 0.5U U 1.0U 1.0UN 0.5

BRGW-50D 10/24/2008 0 0.5< 1.0< 0.5< 1.0< 0.5< < 1.0< 1.0<N 0.5

BRGW-51D 7/13/1993 1435 2.0U 1.0U 1.0U 1.0U 1.0U U 1.0U 1.0UN 2.0

BRGW-51D 1/27/1994 1340 2.0U 1.0U 1.0U 1.0U 1.0U 1.0UN

BRGW-51D 7/7/1994 945 1.0U 1.0U 1.0U 1.0U 1.0U U 1.0U 1.0UN 2.0

BRGW-51D 1/12/1995 1345 1.0U 1.0U 1.0U 1.0U 1.0U U 1.0U 1.0UN 1.0

BRGW-51D 7/21/1995 1200 0.5U 1.0U 0.5U 1.0U 0.5U URL% 1.0U 1.0UN 1.0

BRGW-51D…

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