2018-05-22_HYDROLOGY - M1977344

• Permit No: M1977344
• IBM Index Class Name: HYDROLOGY
• Doc Date: 5/22/2018
• Doc Name: Water Monitoring - Groundwater
• From: Christopher Peters
• To: DRMS
• Annual Report Year: 2018
• Email Name: TC1
• Media Type: D
• Archive: No

2018 GROUNDWATER MONITORING REPORT
CONTENTS
Acronymsand Abbreviations..........................................................................................................................
1 Introduction.............................................................................................................................................1
' 1.1 Site Location...................................................................................................................................1
1.2 Site History.....................................................................................................................................1
1.3 Site Regulatory History...................................................................................................................2
1.3.1 Baseline Groundwater Monitoring Program........................................................................2
' 1.3.2 November 21, 2008 Groundwater Monitoring Plan ............................................................3
1.3.3 February 17, 2009 Groundwater Monitoring Plan...............................................................3
1.3.4 July 7, 2010 Groundwater Monitoring Plan.........................................................................4
1.3.5 October 17, 2014 Proposal to Remove Sodium as a Groundwater Quality Parameter.....4
' 2 Groundwater Sampling Activities............................................................................................................5
3 Results....................................................................................................................................................6
3.1 Groundwater Elevations and Flow Characteristics........................................................................6
3.2 Analytical Results...........................................................................................................................6
' 4 Conclusions and recommendations.......................................................................................................8
5 References.............................................................................................................................................9
TABLES
' Table 1 March 2018 Depth to Groundwater Measurements and Groundwater Elevations
Table 2 March 2018 Field and Analytical Results
FIGURES
Figure 1 Site Location Map
Figure 2 Groundwater Contour Map
Figure 3 Potassium to Sodium Ratio Time Series Graph
Figure 4 Total Dissolved Solids Time Series Graph
' Figure 5 Sulfate Time Series Graph
„ ES-1