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done after the drilling is complete by placing slotted 4" PVC or steel casing through <br />the zone intended to be monitored. Solid casing shall extend from that point to the <br />surface. The annulus of the casing will be filled at the bottom with Colorado Silica <br />Sand to a point at the top of the slotted casing. Well abandonment material shall then <br />be placed from that point to a point 10 feet from the surface. The zone to be <br />monitored shall be isolated from other water bearing zones by placing a bentonite <br />plug above and/or below the silica sand zone in the annulus of the casing. The <br />annulus of the casing will then be filled to within 10 feet of the surface with approved <br />well abandonment material. A cement surface plug will then be placed in the upper <br />10 feet of the casing annulus to the surface. The steel surface casing shall be left in <br />place on this hole and shall extent to a height not to exceed 2 feet above the land <br />surface. A lockable lid shall be placed on the top of the casing to protect the well. <br />