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Figure 16. General !Jell Construction Schemzitic (not to <br />scale) for Composite (Overburdery Dakot,j Coal, <br />and Underburden) Wells Drilled 'in The :icraper <br />Area* During 1986, Nucla Mine, Montrose <br />County, Colorado <br />ace <br />Cement (Type II) <br />from 5' to <br />ground surface <br />Overburden, <br />Dakota Coal, <br />and Under- <br />burden (= 8.0 ' ) <br />End cap (vented) <br />Rubber Packer <br />Open annulus <br />2"id pvc sch 40 <br />4 7/8" bore Hole <br />5'of skill saw slotted <br />2"id pvc sch 40 <br />Bottom cap <br />*Schematic is pertinent to wells G41-N23, GV!-N24 <br />and GW-W25 <br />~J <br />• <br />• <br />72 <br />