LIST OF FIGURES

Figure No.

Page

1

Steps in Designing a Ground Water Monitoring System . . . . . . . . . . . . . . .

2 2

2

Possible Borehole Configurations For a Small Surface Impoundment . . . . . .

4 12

3

Iteration of Borehole Program at a Small Surface Impoundment . . . . . . . . .

4 13

4

Example of a Potentiometric Surface Map . . . . . . . . . . . . . . . . . . . . . . . .

4 43

5

Example of Flow Net Derived from Piezometer Data . . . . . . . . . . . . . . . . .

4 45

6

Example of a Containment Affecting the Integrity of a Confining

Layer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4 55

7

Example of a Topographic Map Constructed Within a 2 Foot Contour

Interval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4 56

8

Example of a Geological Cross Section . . . . . . . . . . . . . . . . . . . . . . . . . .

4 59

9

Downgradient Wells Immediately Adjacent to the Hazardous Waste

Management Area Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5 3

10

Example of the Placement of Background Monitoring Wells . . . . . . . . . . . .

5 11

11

Distributary Springs Along the Green River near Mammoth Cave,

Kentucky, as Determined by Tracer Studies . . . . . . . . . . . . . . . . . . . . . . .

5 15

12

Summary of Tracer Studies in the Karst of Fillmore County,

Minnesota, in the Vicinity of the Ironwood Landfill . . . . . . . . . . . . . . . . .

5 19

13

Cross Section of Typical Monitoring Well . . . . . . . . . . . . . . . . . . . . . . . .

6 17

14

Decision Chart for Turbid Ground Water Samples . . . . . . . . . . . . . . . . . . .

6 49

November 1992

viii