**MDA_SITE_ID SAMPLE_DATE**  **ANALYTE_NAME ANALYTE CONCENTRATION**  **REPORTING_LIMIT (LOQ)**  BATCR-1 6/3/2011Clopyralid N.D. 0.022 BBID-1 5/29/2009Clopyralid N.D. 0.022 BBID-1 6/29/2009Clopyralid N.D. 0.022 BBID-1 8/31/2009Clopyralid N.D. 0.022 BBID-1 9/28/2009Clopyralid N.D. 0.022 BBID-2 5/29/2009Clopyralid Q 0.022 BBID-2 6/29/2009Clopyralid N.D. 0.022 BBID-2 8/31/2009Clopyralid N.D. 0.022 BBID-2 9/28/2009Clopyralid N.D. 0.022 BEEFS 10/26/2009Clopyralid N.D. 0.011 BGMDCR-1 8/3/2010Clopyralid N.D. 0.022 BHR-1 6/12/2007Clopyralid N.D. 0.022 BHR-1 9/5/2007Clopyralid N.D. 0.022 BHR-2 6/12/2007Clopyralid N.D. 0.022 BHR-2 9/5/2007Clopyralid N.D. 0.022 BIGSPRCR-1 6/16/2009Clopyralid N.D. 0.022 BIGSPRCR-1 9/14/2009Clopyralid N.D. 0.022 BILS-1 6/2/2010Clopyralid N.D. 0.022 BILS-1 9/2/2010Clopyralid N.D. 0.022 BILS-10 6/2/2010Clopyralid N.D. 0.022 BILS-10 9/1/2010Clopyralid N.D. 0.022 BILS-11 6/1/2010Clopyralid N.D. 0.022 BILS-11 6/17/2010Clopyralid N.D. 0.022 BILS-11 7/13/2010Clopyralid N.D. 0.022 BILS-11 9/1/2010Clopyralid N.D. 0.022 BILS-11 9/27/2010Clopyralid N.D. 0.022 BILS-11 6/16/2011Clopyralid N.D. 11 BILS-11 8/29/2011Clopyralid N.D. 11 BILS-2 6/2/2010Clopyralid N.D. 0.022 BILS-2 9/1/2010Clopyralid N.D. 0.022 BILS-3 6/1/2010Clopyralid N.D. 0.022 BILS-3 7/14/2010Clopyralid N.D. 0.022 BILS-3 9/1/2010Clopyralid N.D. 0.022 BILS-3 9/27/2010Clopyralid N.D. 0.022 BILS-4 6/2/2010Clopyralid N.D. 0.022 BILS-4 9/2/2010Clopyralid N.D. 0.022 BILS-5 6/2/2010Clopyralid N.D. 0.022 BILS-5 9/1/2010Clopyralid N.D. 0.022 BILS-6 6/2/2010Clopyralid N.D. 0.022 BILS-6 9/2/2010Clopyralid N.D. 0.022 BILS-7 6/1/2010Clopyralid N.D. 0.022 BILS-7 7/14/2010Clopyralid Q 0.022BILS-7 9/1/2010Clopyralid N.D. 0.022

BILS-7 9/28/2010Clopyralid N.D. 0.022 BILS-7 8/29/2011Clopyralid N.D. 11 BILS-8 6/2/2010Clopyralid N.D. 0.022 BILS-8 9/1/2010Clopyralid N.D. 0.022 BILS-9 6/1/2010Clopyralid N.D. 0.022 BILS-9 7/13/2010Clopyralid Q 0.022 BILS-9 9/1/2010Clopyralid N.D. 0.022 BILS-9 9/27/2010Clopyralid N.D. 0.022 BILS-9 8/29/2011Clopyralid N.D. 11 BILSS-1 6/16/2011Clopyralid 800 11 BILSS-2 6/16/2011Clopyralid N.D. 11 BSC@HAVRE 6/4/2008Clopyralid N.D. 0.022 BSC@HAVRE 6/30/2008Clopyralid N.D. 0.022 BSC@HAVRE 8/29/2008Clopyralid N.D. 0.022 BSC@HAVRE 9/29/2008Clopyralid N.D. 0.022 BSP-R1 6/17/2008Clopyralid N.D. 0.022 BSP-R1 9/16/2008Clopyralid N.D. 0.022 BSP-R2 6/17/2008Clopyralid N.D. 0.022 BSP-R2 9/15/2008Clopyralid N.D. 0.022 BSP-R3 6/17/2008Clopyralid N.D. 0.022 BSP-R3 9/16/2008Clopyralid N.D. 0.022 BSP-R4 6/17/2008Clopyralid N.D. 0.022 BSP-R4 9/16/2008Clopyralid N.D. 0.022 BUTSW-1 7/27/2012 Clopyralid N.D. 0.022 BUTSW-2 7/27/2012 Clopyralid N.D. 0.022 BUTSW-3 7/27/2012 Clopyralid N.D. 0.022 BUTSW-4 7/27/2012 Clopyralid N.D. 0.022 BUTSW-5 7/27/2012 Clopyralid N.D. 0.022 BUTSW-6 7/27/2012 Clopyralid N.D. 0.022 BZCR-1WTR 8/17/2011Clopyralid N.D. 11 CFSW-1 6/3/2013 Clopyralid N.D. 0.022 CFSW-1 8/26/2013 Clopyralid N.D. 0.022 CFSW-2 6/3/2013 Clopyralid N.D. 0.022 CFSW-2 8/26/2013 Clopyralid N.D. 0.022 CFSW-3 6/4/2013 Clopyralid N.D. 0.022 CFSW-3 8/26/2013 Clopyralid N.D. 0.022 CLC-1 4/14/2008Clopyralid N.D. 0.022 CLC-2 4/14/2008Clopyralid N.D. 0.022 CRSPR-1WTR 8/12/2011Clopyralid N.D. 11 CTNWDCR-1 8/3/2010Clopyralid N.D. 0.022 CTTNWDCR-1 6/2/2011Clopyralid N.D. 0.022 D2BWTR 8/10/2011Clopyralid N.D. 11 DOT-FUS5 10/19/2009Clopyralid N.D. 0.022DRAIN23 10/26/2009Clopyralid Q 0.011

DRAIN6 10/26/2009Clopyralid N.D. 0.011 DRAINWX 10/26/2009Clopyralid 0.062 0.011 DROADWBILL-1 4/28/2009Clopyralid N.D. 0.022 DROADWBILL-1 6/29/2009Clopyralid N.D. 0.022 EDGARE-1 4/28/2009Clopyralid N.D. 0.022 EDGARE-1 5/28/2009Clopyralid Q 0.022 EDGARE-1 6/29/2009Clopyralid N.D. 0.022 EDGARE-1 8/31/2009Clopyralid N.D. 0.022 EDGARE-1 9/28/2009Clopyralid N.D. 0.022 EDGARS-1 4/28/2009Clopyralid N.D. 0.022 EDGARS-1 6/30/2009Clopyralid 0.046 0.022 EG-1WTR 8/17/2011Clopyralid N.D. 11 EG-2WTR 8/17/2011Clopyralid N.D. 11 EG-3WTR 8/22/2011Clopyralid N.D. 11 EG-4WTR 8/22/2011Clopyralid N.D. 11 EG-5WTR 8/22/2011Clopyralid N.D. 11 FLC-11 9/1/2009Clopyralid N.D. 0.022 FLC-11 5/25/2010Clopyralid N.D. 0.022 FLC-12 9/1/2009Clopyralid N.D. 0.022 FLC-14 9/1/2009Clopyralid N.D. 0.022 FROME-1 6/30/2009Clopyralid N.D. 0.022 GVP-26 6/14/2006Clopyralid N.D. 0.0066 GVP-26 9/6/2006Clopyralid N.D. 0.0066 GVP-27 6/14/2006Clopyralid N.D. 0.0066 GVP-27 9/6/2006Clopyralid N.D. 0.0066 GVP-28 6/14/2006Clopyralid N.D. 0.0066 GVP-28 9/6/2006Clopyralid N.D. 0.0066 H-1BWTR 8/10/2011Clopyralid N.D. 11 JUDITHR 5/28/2009Clopyralid N.D. 0.022 JUDITHR 6/29/2009Clopyralid N.D. 0.022 JUDITHR 8/31/2009Clopyralid N.D. 0.022 JUDITHR 9/28/2009Clopyralid N.D. 0.022 KALS-1 7/12/2011Clopyralid N.D. 0.022 KALS-1 8/11/2011Clopyralid N.D. 0.022 KALS-2 7/12/2011Clopyralid N.D. 0.022 KALS-2 8/11/2011Clopyralid N.D. 0.022 KALS-3 7/12/2011Clopyralid N.D. 0.022 KALS-3 8/11/2011Clopyralid N.D. 0.022 KALS-4 7/12/2011Clopyralid N.D. 0.022 KALS-4 8/11/2011Clopyralid N.D. 0.022 LOUSECR 6/15/2009Clopyralid N.D. 0.022 LOUSECR 9/15/2009Clopyralid N.D. 0.022 MANVC-1WTR 8/15/2011Clopyralid N.D. 11MP-12WTR 8/16/2011Clopyralid N.D. 11

MP-13WTR 8/16/2011Clopyralid N.D. 11 MP-15WTR 8/16/2011Clopyralid N.D. 11 MR@LOMA 6/4/2008Clopyralid N.D. 0.022 MR@LOMA 6/30/2008Clopyralid N.D. 0.022 MR@LOMA 8/29/2008Clopyralid N.D. 0.022 MR@LOMA 9/29/2008Clopyralid N.D. 0.022 MR@SHELBY 6/4/2008Clopyralid N.D. 0.022 MR@SHELBY 6/30/2008Clopyralid N.D. 0.022 MR@SHELBY 8/29/2008Clopyralid N.D. 0.022 MR@SHELBY 9/29/2008Clopyralid N.D. 0.022 P-10WTR 8/10/2011Clopyralid N.D. 11 P-12WTR 8/10/2011Clopyralid N.D. 11 P-2WTR 8/9/2011Clopyralid N.D. 11 P-4WTR 8/9/2011Clopyralid N.D. 11 P-6WTR 8/9/2011Clopyralid N.D. 11 RODRWBILL-1 4/28/2009Clopyralid N.D. 0.022 RODRWBILL-2 6/29/2009Clopyralid 0.41 0.022 ROSSFKCRN-1 6/16/2009Clopyralid N.D. 0.022 ROSSFKCRN-1 9/14/2009Clopyralid N.D. 0.022 ROSSFKCRS-1 6/16/2009Clopyralid N.D. 0.022 ROSSFKCRS-1 9/15/2009Clopyralid N.D. 0.022 RUB-1 6/13/2007Clopyralid N.D. 0.022 RUB-1 9/5/2007Clopyralid N.D. 0.022 S-11 5/31/2006Clopyralid 0.054 0.0066 S-2 5/31/2006Clopyralid N.D. 0.0066 S-2 8/29/2006Clopyralid N.D. 0.0066 S-2 7/17/2007Clopyralid Q 0.022 S-2 9/18/2007Clopyralid N.D. 0.022 S-2 4/25/2008Clopyralid N.D. 0.022 S-2 7/29/2008Clopyralid 0.052 0.022 S-2 6/1/2009Clopyralid N.D. 0.022 S-2 8/20/2009Clopyralid 0.022 0.022 S-2 5/17/2011Clopyralid N.D. 0.022 S-2 7/15/2013 Clopyralid N.D. 0.022 S-4 5/31/2006Clopyralid N.D. 0.0066 S-4 8/29/2006Clopyralid 0.048 0.0066 S-4 7/17/2007Clopyralid 0.13 0.022 S-4 9/18/2007Clopyralid 0.036 0.022 S-4 4/25/2008Clopyralid N.D. 0.022 S-4 7/29/2008Clopyralid 0.06 0.022 S-4 6/1/2009Clopyralid N.D. 0.022 S-4 8/20/2009Clopyralid 0.097 0.022 S-4 5/17/2011Clopyralid N.D. 0.022S-4 8/8/2011Clopyralid 0.16 0.022

S-4 7/15/2013 Clopyralid 0.11 0.022 S-6 5/31/2006Clopyralid Q 0.0066 S-6 8/29/2006Clopyralid 0.039 0.0066 S-6 7/17/2007Clopyralid 0.2 0.022 S-6 9/17/2007Clopyralid 0.038 0.022 S-6 4/25/2008Clopyralid Q 0.022 S-6 7/29/2008Clopyralid 0.1 0.022 S-6 7/12/2010Clopyralid 0.59 0.022 S-6 9/23/2010Clopyralid N.D. 0.022 S-6 6/15/2012 Clopyralid 0.43 0.022 S-6 8/23/2012 Clopyralid N.D. 0.022 S-7 5/31/2006Clopyralid 0.033 0.0066 S-7 8/29/2006Clopyralid Q 0.0066 S-7 7/16/2007Clopyralid 0.059 0.022 S-7 9/17/2007Clopyralid Q 0.022 S-7 4/24/2008Clopyralid N.D. 0.022 S-7 7/28/2008Clopyralid 0.087 0.022 S-7 7/12/2010Clopyralid 0.035 0.022 S-7 9/23/2010Clopyralid N.D. 0.022 S-7 6/15/2012 Clopyralid 0.028 0.022 S-7 8/23/2012 Clopyralid N.D. 0.022 S-8 5/31/2006Clopyralid 0.029 0.0066 S-8 8/29/2006Clopyralid 0.043 0.0066 S-8 7/16/2007Clopyralid 0.14 0.022 S-8 9/17/2007Clopyralid 0.036 0.022 S-8 4/24/2008Clopyralid 0.028 0.022 S-8 7/28/2008Clopyralid 0.14 0.022 S-8 7/12/2010Clopyralid 0.043 0.022 S-8 9/23/2010Clopyralid N.D. 0.022 S-8 6/15/2012 Clopyralid 0.034 0.022 S-8 8/23/2012 Clopyralid N.D. 0.022 SAGECR 6/15/2009Clopyralid N.D. 0.022 SAGECR 9/15/2009Clopyralid N.D. 0.022 SAGECR-1 6/2/2011Clopyralid N.D. 0.022 SC-1 4/15/2008Clopyralid N.D. 0.022 SC-3 4/15/2008Clopyralid N.D. 0.022 TR@DUTTON 6/4/2008Clopyralid N.D. 0.022 TR@DUTTON 6/30/2008Clopyralid N.D. 0.022 TR@DUTTON 8/29/2008Clopyralid Q 0.022 TR@DUTTON 9/29/2008Clopyralid N.D. 0.022 UMS-10 6/15/2010Clopyralid N.D. 0.022 UMS-10 9/10/2010Clopyralid N.D. 0.022 UMS-12 6/15/2010Clopyralid N.D. 0.022UMS-12 9/10/2010Clopyralid N.D. 0.022

UMS-14 6/15/2010Clopyralid N.D. 0.022 UMS-14 9/10/2010Clopyralid N.D. 0.022 UMS-15 6/15/2010Clopyralid N.D. 0.022 UMS-15 9/9/2010Clopyralid N.D. 0.022 UMS-15 9/10/2010Clopyralid N.D. 0.022 UMS-17 6/15/2010Clopyralid N.D. 0.022 UMS-17 9/10/2010Clopyralid N.D. 0.022 UMS-2 6/15/2010Clopyralid N.D. 0.022 UMS-2 9/10/2010Clopyralid N.D. 0.022 UMS-22 9/10/2010Clopyralid N.D. 0.022 UMS-23 6/15/2010Clopyralid N.D. 0.022 UMS-23 9/10/2010Clopyralid N.D. 0.022 UMS-25 9/10/2010Clopyralid N.D. 0.022 UMS-7 6/15/2010Clopyralid N.D. 0.022 UMS-7 9/10/2010Clopyralid N.D. 0.022 UMS-9 6/15/2010Clopyralid N.D. 0.022 WILCR-1 6/2/2011Clopyralid N.D. 0.022 WILLOW-1 5/26/2009Clopyralid N.D. 0.022 WILLOW-1 8/11/2009Clopyralid N.D. 0.022 WOLFCR 6/15/2009Clopyralid N.D. 0.022 WOLFCR 9/15/2009Clopyralid 0.048 0.022 WSPRING-1 5/26/2009Clopyralid N.D. 0.022 WSPRING-1 8/11/2009Clopyralid N.D. 0.022 WUH-1 4/14/2008Clopyralid N.D. 0.022 YBCR-1 8/16/2010Clopyralid N.D. 0.022 YSR1 10/26/2009Clopyralid Q 0.011 YSR2 10/26/2009Clopyralid N.D. 0.011**UNITS COUNTY_DESCRIPTION**  **WATERSHED_NAME NORTH_LATITUDE**  **WEST_LONGITUDE**

ug/L (ppb) Blaine Milk 48.58453 -109.10036 ug/L (ppb) Yellowstone Middle Yellowstone 45.7335 -108.62867 ug/L (ppb) Yellowstone Middle Yellowstone 45.7335 -108.62867 ug/L (ppb) Yellowstone Middle Yellowstone 45.7335 -108.62867 ug/L (ppb) Yellowstone Middle Yellowstone 45.7335 -108.62867 ug/L (ppb) Yellowstone Middle Yellowstone 45.85626 -108.50216 ug/L (ppb) Yellowstone Middle Yellowstone 45.85626 -108.50216 ug/L (ppb) Yellowstone Middle Yellowstone 45.85626 -108.50216 ug/L (ppb) Yellowstone Middle Yellowstone 45.85626 -108.50216 ug/L (ppb) Richland Lower Yellowstone 47.42911 -104.35401 ug/L (ppb) Sheridan Lower Missouri 48.67308 -104.51347 ug/L (ppb) Beaverhead Upper Missouri 45.2378 -112.62143 ug/L (ppb) Beaverhead Upper Missouri 45.2378 -112.62143 ug/L (ppb) Madison Upper Missouri 45.38 -112.45 ug/L (ppb) Madison Upper Missouri 45.38 -112.45 ug/L (ppb) Fergus Middle Missouri 47.192503 -109.631558 ug/L (ppb) Fergus Middle Missouri 47.192503 -109.631558 ug/L (ppb) Yellowstone Upper Yellowstone 45.755039 -108.698142 ug/L (ppb) Yellowstone Upper Yellowstone 45.755039 -108.698142 ug/L (ppb) Yellowstone Upper Yellowstone 45.841961 -108.492256 ug/L (ppb) Yellowstone Upper Yellowstone 45.841961 -108.492256 ug/L (ppb) Yellowstone Upper Yellowstone 45.76939 -108.47294 ug/L (ppb) Yellowstone Upper Yellowstone 45.76939 -108.47294 ug/L (ppb) Yellowstone Upper Yellowstone 45.76939 -108.47294 ug/L (ppb) Yellowstone Upper Yellowstone 45.76939 -108.47294 ug/L (ppb) Yellowstone Upper Yellowstone 45.76939 -108.47294 ng/L (ppt) Yellowstone Upper Yellowstone 45.76939 -108.47294 ng/L (ppt) Yellowstone Upper Yellowstone 45.76939 -108.47294 ug/L (ppb) Yellowstone Upper Yellowstone 45.711608 -108.658756 ug/L (ppb) Yellowstone Upper Yellowstone 45.711608 -108.658756 ug/L (ppb) Yellowstone Upper Yellowstone 45.72981 -108.61958 ug/L (ppb) Yellowstone Upper Yellowstone 45.72981 -108.61958 ug/L (ppb) Yellowstone Upper Yellowstone 45.72981 -108.61958 ug/L (ppb) Yellowstone Upper Yellowstone 45.72981 -108.61958 ug/L (ppb) Yellowstone Upper Yellowstone 45.7939 -108.590267 ug/L (ppb) Yellowstone Upper Yellowstone 45.7939 -108.590267 ug/L (ppb) Yellowstone Upper Yellowstone 45.782931 -108.585233 ug/L (ppb) Yellowstone Upper Yellowstone 45.782931 -108.585233 ug/L (ppb) Yellowstone Upper Yellowstone 45.780103 -108.553442 ug/L (ppb) Yellowstone Upper Yellowstone 45.780103 -108.553442 ug/L (ppb) Yellowstone Upper Yellowstone 45.74086 -108.56664 ug/L (ppb) Yellowstone Upper Yellowstone 45.74086 -108.56664ug/L (ppb) Yellowstone Upper Yellowstone 45.74086 -108.56664

ug/L (ppb) Yellowstone Upper Yellowstone 45.74086 -108.56664 ng/L (ppt) Yellowstone Upper Yellowstone 45.74086 -108.56664 ug/L (ppb) Yellowstone Upper Yellowstone 45.794819 -108.534647 ug/L (ppb) Yellowstone Upper Yellowstone 45.794819 -108.534647 ug/L (ppb) Yellowstone Upper Yellowstone 45.75178 -108.50986 ug/L (ppb) Yellowstone Upper Yellowstone 45.75178 -108.50986 ug/L (ppb) Yellowstone Upper Yellowstone 45.75178 -108.50986 ug/L (ppb) Yellowstone Upper Yellowstone 45.75178 -108.50986 ng/L (ppt) Yellowstone Upper Yellowstone 45.75178 -108.50986 ng/L (ppt) Yellowstone null null null ng/L (ppt) Yellowstone null null null ug/L (ppb) Hill Milk 48.5561 -109.80853 ug/L (ppb) Hill Milk 48.5561 -109.80853 ug/L (ppb) Hill Milk 48.5561 -109.80853 ug/L (ppb) Hill Milk 48.5561 -109.80853 ug/L (ppb) Ravalli Upper Clark Fork 46.62309 -114.05105 ug/L (ppb) Ravalli Upper Clark Fork 46.62309 -114.05105 ug/L (ppb) Ravalli Upper Clark Fork 46.56639 -114.06126 ug/L (ppb) Ravalli Upper Clark Fork 46.56639 -114.06126 ug/L (ppb) Ravalli Upper Clark Fork 46.52726 -114.088 ug/L (ppb) Ravalli Upper Clark Fork 46.52726 -114.088 ug/L (ppb) Ravalli Upper Clark Fork 46.211 -114.145 ug/L (ppb) Ravalli Upper Clark Fork 46.211 -114.145 ug/L (ppb) Silver Bow Upper Clark Fork 46.00142 -112.60031 ug/L (ppb) Silver Bow Upper Clark Fork 45.9946 -112.53597 ug/L (ppb) Silver Bow Upper Clark Fork 45.98064 -112.50217 ug/L (ppb) Silver Bow Upper Clark Fork 45.94547 -112.47508 ug/L (ppb) Silver Bow Upper Clark Fork 45.97006 -112.50219 ug/L (ppb) Silver Bow Upper Clark Fork 45.931 -112.49561 ng/L (ppt) Gallatin Upper Missouri 45.69978 -111.02739 ug/L (ppb) Carbon Upper Yellowstone 45.4471 -108.8646 ug/L (ppb) Carbon Upper Yellowstone 45.4471 -108.8646 ug/L (ppb) Carbon Upper Yellowstone 45.3846 -108.902 ug/L (ppb) Carbon Upper Yellowstone 45.3846 -108.902 ug/L (ppb) Carbon Upper Yellowstone 45.1799 -108.9922 ug/L (ppb) Carbon Upper Yellowstone 45.1799 -108.9922 ug/L (ppb) Dawson Lower Yellowstone 46.98632 -104.78597 ug/L (ppb) Dawson Lower Yellowstone 46.99426 -104.79442 ng/L (ppt) Lewis & Clark null 47.6259 -111.6364 ug/L (ppb) Sheridan Lower Missouri 48.505171 -104.171784 ug/L (ppb) Liberty Marias 48.4795 -110.9726 ng/L (ppt) Lewis & Clark Upper Missouri 46.6836 -111.9907 ug/L (ppb) Fergus Middle Missouri 47.052019 -109.438394ug/L (ppb) Richland Lower Yellowstone 47.75794 -104.08581

ug/L (ppb) Richland Lower Yellowstone 47.54724 -104.27176 ug/L (ppb) Richland Lower Yellowstone 47.62337 -104.20682 ug/L (ppb) Yellowstone Upper Yellowstone 45.711522 -108.658922 ug/L (ppb) Yellowstone Upper Yellowstone 45.711522 -108.658922 ug/L (ppb) Carbon Upper Yellowstone 45.465544 -108.843333 ug/L (ppb) Carbon Upper Yellowstone 45.465544 -108.843333 ug/L (ppb) Carbon Upper Yellowstone 45.465544 -108.843333 ug/L (ppb) Carbon Upper Yellowstone 45.465544 -108.843333 ug/L (ppb) Carbon Upper Yellowstone 45.465544 -108.843333 ug/L (ppb) Carbon Upper Yellowstone 45.447125 -108.864564 ug/L (ppb) Carbon Upper Yellowstone 45.447125 -108.864564 ng/L (ppt) Gallatin Upper Missouri 45.6647 -110.9549 ng/L (ppt) Gallatin Upper Missouri 45.713 -111.0411 ng/L (ppt) Gallatin Upper Missouri 45.7244 -111.0689 ng/L (ppt) Gallatin Upper Missouri 45.776 -111.109 ng/L (ppt) Gallatin Upper Missouri 45.8381 -111.1595 ug/L (ppb) Lake Flathead 47.881639 -114.028933 ug/L (ppb) Lake Flathead 47.881639 -114.028933 ug/L (ppb) Lake Flathead 47.738658 -114.05345 ug/L (ppb) Lake Flathead 47.691494 -114.0506 ug/L (ppb) Carbon Upper Yellowstone 45.384636 -108.901939 ug/L (ppb) Gallatin Upper Missouri 45.69974 -111.02732 ug/L (ppb) Gallatin Upper Missouri 45.69974 -111.02732 ug/L (ppb) Gallatin Upper Missouri 45.75205 -111.13269 ug/L (ppb) Gallatin Upper Missouri 45.75205 -111.13269 ug/L (ppb) Gallatin Upper Missouri 45.83915 -111.29904 ug/L (ppb) Gallatin Upper Missouri 45.83915 -111.29904 ng/L (ppt) Lewis & Clark null 46.63864 -111.98906 ug/L (ppb) Fergus Middle Missouri 47.35522 -109.68923 ug/L (ppb) Fergus Middle Missouri 47.35522 -109.68923 ug/L (ppb) Fergus Middle Missouri 47.35522 -109.68923 ug/L (ppb) Fergus Middle Missouri 47.35522 -109.68923 ug/L (ppb) Flathead Flathead 48.17492 -114.30933 ug/L (ppb) Flathead Flathead 48.17492 -114.30933 ug/L (ppb) Flathead Flathead 48.21019 -114.30714 ug/L (ppb) Flathead Flathead 48.21019 -114.30714 ug/L (ppb) Flathead Flathead 48.21861 -114.28583 ug/L (ppb) Flathead Flathead 48.21861 -114.28583 ug/L (ppb) Flathead Flathead 48.22578 -114.26733 ug/L (ppb) Flathead Flathead 48.22578 -114.26733 ug/L (ppb) Judith Basin Middle Missouri 47.11777 -109.77775 ug/L (ppb) Judith Basin Middle Missouri 47.11777 -109.77775 ng/L (ppt) Gallatin Upper Missouri 45.71247 -111.05544ng/L (ppt) Missoula null null null

ng/L (ppt) Missoula null 46.8372 -113.9912 ng/L (ppt) Missoula null 46.8486 -114.0985 ug/L (ppb) Chouteau Marias 47.94682 -110.52929 ug/L (ppb) Chouteau Marias 47.94682 -110.52929 ug/L (ppb) Chouteau Marias 47.94682 -110.52929 ug/L (ppb) Chouteau Marias 47.94682 -110.52929 ug/L (ppb) Toole Marias 48.3837 -111.71907 ug/L (ppb) Toole Marias 48.3837 -111.71907 ug/L (ppb) Toole Marias 48.3837 -111.71907 ug/L (ppb) Toole Marias 48.3837 -111.71907 ng/L (ppt) Lewis & Clark null 46.6608 -111.9756 ng/L (ppt) Lewis & Clark null 46.685 -111.9685 ng/L (ppt) Lewis & Clark null 46.5713 -111.9156 ng/L (ppt) Lewis & Clark null 46.5965 -111.9279 ng/L (ppt) Lewis & Clark null 46.6286 -111.9725 ug/L (ppb) Yellowstone Upper Yellowstone 45.715036 -108.651447 ug/L (ppb) Yellowstone Upper Yellowstone 45.715136 -108.651667 ug/L (ppb) Fergus Middle Missouri 47.064664 -109.721644 ug/L (ppb) Fergus Middle Missouri 47.064664 -109.721644 ug/L (ppb) Fergus Middle Missouri 46.896297 -109.777236 ug/L (ppb) Fergus Middle Missouri 46.896297 -109.777236 ug/L (ppb) Madison Upper Missouri 45.50738 -112.33173 ug/L (ppb) Madison Upper Missouri 45.50738 -112.33173 ug/L (ppb) Teton Missouri-Sun-Smith 47.7733 -112.12903 ug/L (ppb) Teton Missouri-Sun-Smith 47.69262 -112.01003 ug/L (ppb) Teton Missouri-Sun-Smith 47.69262 -112.01003 ug/L (ppb) Teton Missouri-Sun-Smith 47.69262 -112.01003 ug/L (ppb) Teton Missouri-Sun-Smith 47.69262 -112.01003 ug/L (ppb) Teton Missouri-Sun-Smith 47.69262 -112.01003 ug/L (ppb) Teton Missouri-Sun-Smith 47.69262 -112.01003 ug/L (ppb) Teton Missouri-Sun-Smith 47.69262 -112.01003 ug/L (ppb) Teton Missouri-Sun-Smith 47.69262 -112.01003 ug/L (ppb) Teton Missouri-Sun-Smith 47.69262 -112.01003 ug/L (ppb) Teton Missouri-Sun-Smith 47.69262 -112.01003 ug/L (ppb) Teton Missouri-Sun-Smith 47.68545 -111.88038 ug/L (ppb) Teton Missouri-Sun-Smith 47.68545 -111.88038 ug/L (ppb) Teton Missouri-Sun-Smith 47.68545 -111.88038 ug/L (ppb) Teton Missouri-Sun-Smith 47.68545 -111.88038 ug/L (ppb) Teton Missouri-Sun-Smith 47.68545 -111.88038 ug/L (ppb) Teton Missouri-Sun-Smith 47.68545 -111.88038 ug/L (ppb) Teton Missouri-Sun-Smith 47.68545 -111.88038 ug/L (ppb) Teton Missouri-Sun-Smith 47.68545 -111.88038 ug/L (ppb) Teton Missouri-Sun-Smith 47.68545 -111.88038ug/L (ppb) Teton Missouri-Sun-Smith 47.68545 -111.88038

ug/L (ppb) Teton Missouri-Sun-Smith 47.68545 -111.88038 ug/L (ppb) Teton Missouri-Sun-Smith 47.6887 -111.71125 ug/L (ppb) Teton Missouri-Sun-Smith 47.6887 -111.71125 ug/L (ppb) Teton Missouri-Sun-Smith 47.6887 -111.71125 ug/L (ppb) Teton Missouri-Sun-Smith 47.6887 -111.71125 ug/L (ppb) Teton Missouri-Sun-Smith 47.6887 -111.71125 ug/L (ppb) Teton Missouri-Sun-Smith 47.6887 -111.71125 ug/L (ppb) Teton Missouri-Sun-Smith 47.6887 -111.71125 ug/L (ppb) Teton Missouri-Sun-Smith 47.6887 -111.71125 ug/L (ppb) Teton Missouri-Sun-Smith 47.6887 -111.71125 ug/L (ppb) Teton Missouri-Sun-Smith 47.6887 -111.71125 ug/L (ppb) Teton Missouri-Sun-Smith 47.66237 -111.70392 ug/L (ppb) Teton Missouri-Sun-Smith 47.66237 -111.70392 ug/L (ppb) Teton Missouri-Sun-Smith 47.66237 -111.70392 ug/L (ppb) Teton Missouri-Sun-Smith 47.66237 -111.70392 ug/L (ppb) Teton Missouri-Sun-Smith 47.66237 -111.70392 ug/L (ppb) Teton Missouri-Sun-Smith 47.66237 -111.70392 ug/L (ppb) Teton Missouri-Sun-Smith 47.66237 -111.70392 ug/L (ppb) Teton Missouri-Sun-Smith 47.66237 -111.70392 ug/L (ppb) Teton Missouri-Sun-Smith 47.66237 -111.70392 ug/L (ppb) Teton Missouri-Sun-Smith 47.66237 -111.70392 ug/L (ppb) Teton Missouri-Sun-Smith 47.64307 -111.68007 ug/L (ppb) Teton Missouri-Sun-Smith 47.64307 -111.68007 ug/L (ppb) Teton Missouri-Sun-Smith 47.64307 -111.68007 ug/L (ppb) Teton Missouri-Sun-Smith 47.64307 -111.68007 ug/L (ppb) Teton Missouri-Sun-Smith 47.64307 -111.68007 ug/L (ppb) Teton Missouri-Sun-Smith 47.64307 -111.68007 ug/L (ppb) Teton Missouri-Sun-Smith 47.64307 -111.68007 ug/L (ppb) Teton Missouri-Sun-Smith 47.64307 -111.68007 ug/L (ppb) Teton Missouri-Sun-Smith 47.64307 -111.68007 ug/L (ppb) Teton Missouri-Sun-Smith 47.64307 -111.68007 ug/L (ppb) Fergus Middle Missouri 47.27419 -109.72758 ug/L (ppb) Fergus Middle Missouri 47.27419 -109.72758 ug/L (ppb) Hill Milk 48.56614 -110.30228 ug/L (ppb) Dawson Lower Yellowstone 47.03806 -104.79482 ug/L (ppb) Dawson Lower Yellowstone 47.08248 -104.76347 ug/L (ppb) Teton Marias 47.92964 -111.55378 ug/L (ppb) Teton Marias 47.92964 -111.55378 ug/L (ppb) Teton Marias 47.92964 -111.55378 ug/L (ppb) Teton Marias 47.92964 -111.55378 ug/L (ppb) Wheatland Musselshell 46.392533 -109.758244 ug/L (ppb) Wheatland Musselshell 46.392533 -109.758244 ug/L (ppb) Wheatland Musselshell 46.460525 -109.486672ug/L (ppb) Wheatland Musselshell 46.460525 -109.486672

ug/L (ppb) Wheatland Musselshell 46.318611 -109.459722 ug/L (ppb) Wheatland Musselshell 46.318611 -109.459722 ug/L (ppb) Golden Valley Musselshell 46.482422 -109.340025 ug/L (ppb) Golden Valley Musselshell 46.482422 -109.340025 ug/L (ppb) Golden Valley Musselshell 46.482422 -109.340025 ug/L (ppb) Golden Valley Musselshell 46.315275 -109.185306 ug/L (ppb) Golden Valley Musselshell 46.315275 -109.185306 ug/L (ppb) Wheatland Musselshell 46.476944 -110.248333 ug/L (ppb) Wheatland Musselshell 46.476944 -110.248333 ug/L (ppb) Golden Valley Musselshell 46.292778 -108.891944 ug/L (ppb) Musselshell Musselshell 46.428056 -108.571944 ug/L (ppb) Musselshell Musselshell 46.428056 -108.571944 ug/L (ppb) Wheatland Musselshell 46.446269 -109.919097 ug/L (ppb) Wheatland Musselshell 46.43 -109.84 ug/L (ppb) Wheatland Musselshell 46.43 -109.84 ug/L (ppb) Wheatland Musselshell 46.286956 -109.883486 ug/L (ppb) Toole Marias 48.44836 -111.34575 ug/L (ppb) Broadwater Missouri-Sun-Smith 46.147597 -111.513917 ug/L (ppb) Broadwater Missouri-Sun-Smith 46.147597 -111.513917 ug/L (ppb) Fergus Middle Missouri 47.33019 -109.79225 ug/L (ppb) Fergus Middle Missouri 47.33019 -109.79225 ug/L (ppb) Broadwater Missouri-Sun-Smith 46.137019 -111.509472 ug/L (ppb) Broadwater Missouri-Sun-Smith 46.137019 -111.509472 ug/L (ppb) Dawson Lower Yellowstone 47.01293 -104.79459 ug/L (ppb) Lake Flathead 47.87719 -114.02825 ug/L (ppb) Richland Lower Yellowstone 47.28083 -104.52767 ug/L (ppb) Richland Lower Yellowstone 47.75397 -104.08529**SAMPLE_DESCRIPTION STREAM_DISCHARGE** 

Surface Water null Surface Water null Surface Water null Surface Water null Surface Water null Surface Water null Surface Water null Surface Water null Surface Water null Surface Water null Surface Water 7 Surface Water 152 Surface Water 119 Surface Water 143 Surface Water 86 Surface Water null Surface Water 103.88 Surface Water 22.39 Surface Water 24.38 Surface Water null Surface Water null Surface Water 1.61 Surface Water null Surface Water 1.7 Surface Water 4.43 Surface Water 1.57 Surface Water null Surface Water null Surface Water null Surface Water null Surface Water null Surface Water null Surface Water null Surface Water null Surface Water 4.8 Surface Water 3.1 Surface Water null Surface Water null Surface Water 1.4 Surface Water 1.5 Surface Water 48.8 Surface Water nullSurface Water 49.83

Surface Water 42.2 Surface Water null Surface Water null Surface Water null Surface Water null Surface Water 21.7 Surface Water 16.45 Surface Water 12.89 Surface Water null Surface Water null Surface Water null Surface Water 11 Surface Water 30 Surface Water 25 Surface Water null Surface Water 8720 Surface Water 972 Surface Water null Surface Water 21.7 Surface Water null Surface Water 33.4 Surface Water null Surface Water 45.7 Surface Water 17 Surface Water 10 Surface Water null Surface Water null Surface Water null Surface Water null Surface Water null Surface Water null Surface Water null Surface Water null Surface Water null Surface Water null Surface Water null Surface Water 1.045 Surface Water 1.25 Surface Water null Surface Water 1.1 Surface Water null Surface Water null Surface Water nullSurface Water null

Surface Water null Surface Water null Surface Water null Surface Water null Surface Water null Surface Water 6610 Surface Water 5040 Surface Water 343 Surface Water 317 Surface Water null Surface Water null Surface Water null Surface Water null Surface Water null Surface Water null Surface Water null Surface Water 1 Surface Water 1 Surface Water 1 Surface Water 1 Surface Water 20.58 Surface Water 40.1 Surface Water 8.59 Surface Water 141 Surface Water 2.11 Surface Water 104.7 Surface Water 6.48 Surface Water null Surface Water 655 Surface Water 303 Surface Water 236 Surface Water 224 Surface Water null Surface Water null Surface Water null Surface Water null Surface Water null Surface Water null Surface Water null Surface Water null Surface Water 2.7 Surface Water null Surface Water nullSurface Water null

Surface Water null Surface Water null Surface Water 1810 Surface Water 887 Surface Water 676 Surface Water 732 Surface Water 4700 Surface Water 2270 Surface Water 242 Surface Water 269 Surface Water null Surface Water null Surface Water null Surface Water null Surface Water null Surface Water null Surface Water null Surface Water 20 Surface Water 6.66 Surface Water 4.65 Surface Water 0.7 Surface Water 203 Surface Water 63.58 Surface Water 2.06 Surface Water 7.2 Surface Water 5.81 Surface Water 7.27 Surface Water 1.19 Surface Water null Surface Water 7.02 Surface Water 15.1 Surface Water null Surface Water 0.77 Surface Water null Surface Water 18.51 Surface Water 12.61 Surface Water 25.72 Surface Water 3.68 Surface Water 6.36 Surface Water 13.59 Surface Water 16.7 Surface Water 25.04 Surface Water 8.42Surface Water null

Surface Water 8.98 Surface Water 6.02 Surface Water 8.74 Surface Water 15.57 Surface Water 2.59 Surface Water 0.35 Surface Water 16.34 Surface Water null Surface Water 1.05 Surface Water null Surface Water 54.35 Surface Water 19.99 Surface Water 51.18 Surface Water 43.12 Surface Water 8.4 Surface Water null Surface Water 51.61 Surface Water null Surface Water 12.59 Surface Water 48.31 Surface Water 76.3 Surface Water 39.24 Surface Water 62.94 Surface Water 68.54 Surface Water 34.89 Surface Water null Surface Water null Surface Water null Surface Water 21.65 Surface Water 55.2 Surface Water 38.4 Surface Water null Surface Water null Surface Water null Surface Water 0.31 Surface Water 0.83 Surface Water 390 Surface Water 96 Surface Water 8.2 Surface Water 20 Surface Water null Surface Water 42.96 Surface Water 9.91Surface Water 4.73

Surface Water 248 Surface Water 148 Surface Water 27.82 Surface Water null Surface Water 4.68 Surface Water 82.9 Surface Water 36.59 Surface Water 378 Surface Water 127 Surface Water 145 Surface Water 510 Surface Water 175 Surface Water 1.42 Surface Water 464 Surface Water 184 Surface Water null Surface Water null Surface Water 3.69 Surface Water 1.91 Surface Water null Surface Water null Surface Water 13.4 Surface Water 9.03 Surface Water 0.554 Surface Water null Surface Water null Surface Water null