2014-05-05_HYDROLOGY - M1977348

• Permit No: M1977348
• IBM Index Class Name: HYDROLOGY
• Doc Date: 5/5/2014
• Doc Name: Groundwater characterization report
• From: Golder Associates
• To: DRMS
• Email Name: ECS
• Media Type: D
• Archive: No

April 2014 i 10381640A
Table of Contents
1.0 INTRODUCTION ............................................................................................... ...............................
1
2.0 BACKGROUND INFORMATION ....................................................................... ..............................2
2.1
Site History and CKD Placement ................................................................... ..............................2
2.2
CKD Leachate Assessment .......................................................................... ...............................
2
2.3
Previous Hydrogeologic Investigations .......................................................... ..............................3
2.4
Previous Groundwater Monitoring .................................................................. ..............................4
2.5
Hydrogeologic Conditions ............................................................................. ...............................
4
2.5.1
Geology ...................................................................................................... ..............................4
2.5.2
Hydrogeology ............................................................................................. ..............................5
2.5.3
Background Geochemical Conditions ........................................................ ..............................5
3.0 GROUNDWATER CHARACTERIZATION PROGRAM ..................................... ..............................7
3.1
Hydrogeological Field Investigation ............................................................... ..............................7
3.2
Laboratory Testing of Solids ......................................................................... ...............................
8
3.3
Review of Water Supply Well Information ..................................................... ...............................
8
3.4
Groundwater Monitoring ................................................................................ ...............................
8
4.0 RESULTS AND DISCUSSION ......................................................................... .............................10
4.1
Water Chemistry Data ................................................................................. ...............................
10
4.1.1
Monitoring Well MW- 1 ............................................................................. ...............................
10
4.1.2
Monitoring Well MW- 2 ............................................................................. ...............................
11
4.1.3
Monitoring Well MW- 3 ............................................................................. ...............................
11
4.1.4
Monitoring Well MW- 4 ............................................................................... .............................12
4.1.5
Monitoring Well MW- 5 ............................................................................... .............................13
4.1.6
Monitoring Well MW- 6 ............................................................................... .............................13
4.1.7
Monitoring Well MW- 7 ............................................................................. ...............................
14
4.1.8
Other Observations ................................................................................. ...............................
14
4.2
Solid -Phase Geochemistry .......................................................................... ...............................
15
4.2.1
Bulk Testing ............................................................................................ ...............................
16
4.2.2
Synthetic Precipitation Leaching Procedure ........................................... ...............................
16
4.2.3
Sequential Batch Testing .......................................................................... .............................17
4.3
Hydraulic Data ............................................................................................. ...............................
17
4.4
Nearby Water Supply Wells .......................................................................... .............................20
5.0 SUMMARY AND RECOMMENDATIONS ......................................................... .............................21
5.1.1
Chemical Considerations .......................................................................... .............................21
5.1.2
Hydrogeologic Considerations .................................................................. .............................22
5.1.3
Responses to Comments .......................................................................... .............................22
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