JOINT MEETING of the INDIAN AFFAIRS and the RADIOACTIVE AND - - PowerPoint PPT Presentation

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JOINT MEETING of the INDIAN AFFAIRS and the RADIOACTIVE AND - - PowerPoint PPT Presentation

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JOINT MEETING of the INDIAN AFFAIRS and the RADIOACTIVE AND HAZARDOUS MATERIALS COMMITTEES Santa Fe, New Mexico July 13, 2010 Jerry Schoeppner Mining Environmental Compliance Section, GWQB New Mexico Environment Department Grants Mining

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SLIDE 1

JOINT MEETING

  • f the

INDIAN AFFAIRS

and the

RADIOACTIVE AND HAZARDOUS MATERIALS COMMITTEES

Santa Fe, New Mexico July 13, 2010

Jerry Schoeppner Mining Environmental Compliance Section, GWQB New Mexico Environment Department

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SLIDE 2

Grants Mining District

Overview Groundwater Sampling Mine Screens Mill Activity Future Activity

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SLIDE 3

Grants Mining District

Overview Groundwater Sampling Mine Screens Mill Activity Future Activity

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SLIDE 4

Grants Mining District Shiprock Mining District

Grants Mineral Belt

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SLIDE 5

Grants Mining District Sub-districts

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SLIDE 6

Grants Mining District Sub-districts

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Grants Mining District Sub-districts

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SLIDE 8

Homestake Mill Bluewater Mill Quivara Mill Phillips Mill L-Bar Mill NECR Mill I-40 I-40

I-40

Grants Bluewater San Mateo Ambrosia Lake

  • Hwy. 605
  • Hwy. 509
  • Hwy. 53

Milan

I-40

Ambrosia Lake Sub-district Marquez Sub-district Laguna Sub-district

Grants Mining District Satellite View

Zuni Plateau

  • Mt. Taylor
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SLIDE 9

Grants Mining District Stats

Ambrosia Lake Sub-district 78 mines, 4 Mills 1950’s – 2002 (most closed in 1980’s) Conventional and open pit mining Laguna Sub-district 18 mines, 1 mill Conventional and open pit mining Marquez Sub-district 1 mine site , 1 mill Bernabe Montano Sub-district No activity

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SLIDE 10

Grants Mining District

Overview Groundwater Sampling Mine Screens Mill Activity Future Activity

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SLIDE 11

Ambrosia Lake Sub-district Mines, Wells & Sampling

Abatement Proposed Mine Well Sampling

HMC–58 wells (2005-2007) BLUEWATER/HMC–34 wells (2008) STRATHMORE–25 wells (2009) RIO ALGOM–10 mines UNC–1 mine SMC–28 wells (2009)

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Ambrosia Lake Sub-district Mines, Wells & Sampling

Well Sampling

HMC – 58 wells

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SLIDE 13

Homestake Sampling

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Ambrosia Lake Sub-district Mines, Wells & Sampling

Well Sampling

BLUEWATER/HMC – 34 wells

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Ground Water Well Location Map San Andres Aquifer - 2008 New Mexico Environment Department Bluewater Site Inspection Investigation Bluewater, New Mexico

1 2 Miles

Bluewater-Homestake Sampling

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Ambrosia Lake Sub-district Mines, Wells & Sampling

Well Sampling

SMC – 28 wells

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Ground Water Well Location Map New Mexico Environment Department San Mateo Creek Investigation Grants, New Mexico

San Mateo Creek Sampling

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Ambrosia Lake Sub-district Historic Contamination

Raw Mine Water (10, ’80-’82) COC

  • Conc. (mg/l)

Std. Molybdenum 1.19 1 Radium 280* 5/30 Selenium 0.08 0.05 Sulfate 715 250/600 TDS 1235 500/1000 Uranium 3.82 0.03 Mine Shafts/Vents (5, 20 Yrs.) COC

  • Conc. (mg/l) Std.

Sulfate 1070-2180 250/600 Radium 15-113* 5/30* TDS 1349-3820 500/1000 Uranium 0.05-14.6 0.03 Surface Water (3, 1975) COC

  • Conc. (mg/l)

Std. Radium 47* 5/30 Selenium 0.15 0.05 Uranium 7.7 0.03 Roundy Well (12, ’77-’82) COC

  • Conc. (mg/l)

Std. Selenium 0.27 0.05 Uranium 0.13 0.03 Otero Wells (4 wells, 12-15, ’77-’82) COC

  • Conc. (mg/l)

Std. Selenium 0.09 0.05 Uranium 0.46 0.03 Sandoval Wells (3 wells, 12-13, ’77-’82) COC

  • Conc. (mg/l)

Std. Selenium 0.02 0.05 Uranium 0.22 0.03 Lee Wells (2 wells, 13-14, ’77-’82) No exceedences

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Ambrosia Lake Sub-district Mines, Wells & Sampling

HMC BLUEWATER-HMC

Mine Shafts/Vents (5 mines, 20 Yrs.) COC

  • Conc. (mg/l) Std.

Sulfate 1070-2180 250/600 Radium 15-113* 5/30* TDS 1349-3820 500/1000 Uranium 0.05-14.6 0.03 Domestic Wells (25 wells, 2, 2009) COC #

  • Conc. (mg/l)

Std. Gross Alpha 3 18-75* 15* Manganese 5 0.07-0.3 0.05/2 Nitrate 2 20-25 10 Selenium 2 0.06-0.08 0.05 Sulfate 7 264-2090 250/600 TDS 10 485-3320 500/1000 Uranium 2 0.06-0.18 0.03

*21/25 exceed at least 1 std.

Domestic/Monitoring Wells (34 wells, 2008) COC #

  • Conc. (mg/l)

Std. Nitrite 28 1.02-10.0 1 Sulfate 28/5 341-1440 250/600 TDS 33/12 485-3320 500/1000 Uranium 2 0.31-0.528 0.03

All exceed at least 1 std.

Domestic/Monitoring Wells (58 wells, 2005-2007) COC #

  • Conc. (mg/l)

Std. Selenium 6 0.054-0.174 0.05 Sulfate 49/34 323-2110 250/600 TDS 57/44 598-2980 500/1000 Uranium 30 0.03-0.85 0.03

All exceed at least 1 std. STRATHMORE Rio Algom/UNC SMC

Domestic/Monitoring Wells (28 wells, 2009) COC #

  • Conc. (mg/l)

Std. Selenium 8 0.051-0.618 0.05 Sulfate 17/10 323-2110 250/600 TDS 25/11 534-3400 500/1000 Uranium 14 0.305-0.240 0.03

All exceed at least 1 std.

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Laguna & Marquez Sub-districts Mines & Wells

MWs (8, 4 events) COC

  • Conc. (mg/l) Std.

Sulfate 290-2600 250/600 Radium 36-325* 5/30 TDS 794-3720 500/1000 Uranium 0.04-0.13 0.03 Mine Vents (11, 1 event) COC

  • Conc. (mg/l) Std.

Sulfate 270-2400 250/600 Radium 46-393* 5/30 TDS 1100-3600 500/1000 Uranium 0.08-1.5 0.03 Wells (4, 1 event) COC

  • Conc. (mg/l) Std.

Gross Alpha 76.9 15 Sulfate 510 250/600 Radium 15.5 5/30 TDS 1100-1700 500/1000

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SLIDE 21

Grants Mining District

Overview Groundwater Sampling Mine Screens Mill Activity Future Activity

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Ambrosia Lake Sub-district Mine Screens

AUM Study

MMD – 11 mines 2008

Abatement/MARP

NMED/MMD – 11 mines

AML Study

MMD – 12 mines 2010

Pre-CERCLIS Screens

NMED/EPA/MMD – 18 mines 2009

AML Study/Pre- CERCLIS Screens

MMD/BLM – 8 mines 2009

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Laguna & Marquez Sub-districts Mines & Wells

Abatement/MARP

NMED/MMD – 2 mines

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LUM Activity

60 18

2 16

Ambrosia Lake Sub-district Laguna Sub-district

NMED/EPA/MMD Pending NMED/EPA/MMD Pending

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Doris Mine

26 mines screened Prioritized based on *Physical hazards: open shafts, vent holes, adits, declines, high walls in pits *Environmental hazards: potential contamination of soil or surface/ground water 12 sites proposed for consideration of emergency response due to physical hazards 9 sites proposed for consideration for removal action due to ongoing releases

Pre-CERCLIS Screen Data Poison Canyon

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Spencer mine Section 25 Roundy Manol Spencer mine

Pre-CERCLIS Screens

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Grants Mining District

Overview Groundwater Sampling Mine Screens Mill Activity Future Activity

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SLIDE 28

Homestake Mill Bluewater Mill Quivara Mill Phillips Mill L-Bar Mill NECR Mill I-40 I-40

I-40

Grants Bluewater San Mateo Ambrosia Lake

  • Hwy. 605
  • Hwy. 509
  • Hwy. 53

Milan

I-40

Ambrosia Lake Sub-district Marquez Sub-district Laguna Sub-district

Mill Activity

Zuni Plateau

  • Mt. Taylor

Phillips and Bluewater Mills

  • Sample existing wells
  • Replace and Install new monitoring wells
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Grants Mining District

Overview Groundwater Sampling Mine Screens Mill Activity Future Activity

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SLIDE 30

Future Activity

Proposed sediment sampling Proposed air monitoring Proposed Domestic Well sampling Proposed alluvial GW Investigation

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SLIDE 31

Future Activity

Proposed air monitoring

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Future Activity

  • Continued coordination with federal,

state and tribal agencies

  • Perform additional screens and

groundwater sampling

  • Standardize assessment work and

establish cleanup criteria

  • Prioritize sites
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SLIDE 33

Questions