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0 Feet <br />Concrete <br />10 Feet - SHALLOW HOLES: (Drilled within <br /> t <br />i <br />i <br />Li <br />it <br />H <br />l <br />t b <br />b <br />kfill <br />d <br /> s <br />r <br />pp <br />ng <br />m <br />) <br />o <br />es mus <br />e <br />ac <br />e <br /> with as many cuttings as possible and surface <br /> Drill Cuttings plug set. <br /> <br /> <br /> DEEP HOLES: (Drilled beyond stripping <br />10 Feet above _ Limit) All water aquifers and mineable coal <br />Static Water Level <br /> <br />i <br />W <br />l beds must be cemented off and surface plugs <br />3/8" Bentonite Chips set. <br />ater Leve <br />Stat <br />c <br />- <br /> <br />- ALL HOLES: <br />1. Stripping Limit is determined by the <br />Bentonite Gel District Manager. <br />'-.::. 2. The surface plug must be set to ground <br />t'-~ ``. ` ~'' surface, except in plowed fields, where the <br />o :; .':~.... <br />'^ ~ ~: '~': ~ plug must be set below plow depth. <br />;;., ;; <br />~:. . . <br />~° ~= .. 3. Holes must be backfilled with as many <br />. ~ ; : Aquifer cuttings as possible. <br />4. Excess cuttings must be leveled and <br />dispersed evenly over the surface <br />surrounding the hole, or cuttings may be <br />hauled away to an approved disposal site. <br />- _ Bentonite Gel Note: This diagrnm is not to scale and actual <br />.. location of [he coal and aquifer may vary <br />- greatly. <br />- Coal Bed <br />- Bentonite Gel <br />Total Depth - - <br />Typical Hole Plugging Diagram <br />NOTE: General diagram for abandonment method of exploration drill holes. As noted, <br />location of the aquifer and coal may vary greatly as well. (Taken from previous <br />exploration applications) <br />