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Figure 15-5 <br />Generalized Well Construction Schematic for <br />Spoils Monitoring Wells <br />NH 1 & NH2 Mine, Montrose County, Colorado <br />End Cap (vented) <br />Ground Surface <br />Cement Collar <br /><3/8" pea gravel to :~:: <br />within 5' of ground <br />surface <br />Medium Sand ( 1') <br />on top of gravel pack <br />4" id pvc sch 40 <br /> <br />Spoil/Bedrock Contac <br />15-18 <br />7 7/8" or 6 3/4" Borehole <br />0.06 mill slot 4" id pvc <br />'. sch 40 throughout satura <br />zone <br />ap <br /> <br />