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' Rule 9.07.3(2) states, "Holes which have multiple aquifers or bedrock aquifers not exhibiting artisan flow at the surface may be sealed using a solid cement plug or other suitable media approved by the Division extending 20 feet above and below the water bearing zone." Presented in Appendix 1, are Technical Data Sheets provided by Colloid Environmental Technologies Co., on two products that we request approval as a "suitable media" for well abandonment. These products are Volclay Grout and Pure Gold Grout. We also request that similar products provided by other ' suppliers to also be approved. Two types of abandonment mixtures will be utilized in abandoning 1 the boreholes. Figure 3, Drill Hole Plugging Method, illustrates the proposed abandonment mixtures and their relative locations in the boreholes. Mixture 1, consists of either cement grout or a high solids bentonitic grout which is specifically designed for ' the sealing of boreholes. Mixture 2, consists of heavy mud, drill cuttings, cement or bentonitic grout. Mixture 1 will be utilized within 50 feet above and below any significant aquifer ' or underground mineable coal seam. Specifically, Mixture 1 will be utilized in the stratigraphic interval from the Trout Creek Sandstone extending upwards to 50 feet above the Lennox Seam and within 50 feet either side of the Twentymile Sandstone. Mixture 2 will be utilized in the remaining sequences not containing underground mineable coals or significant aquifers. The surface will be sealed with a cement plug from 3 feet below the surface ' extending approximately 10 feet from the surface. The reclaimed drill locations will be marked with a metal fence post extending 3 - 9 feet above the surface, when not located in plowed fields. ' All drill hole locations will be accurately surveyed, allowing for identification at any time. ' 7. Wildlife and Threatened and Endangered Species Both deer and elk can be seen in the area throughout the year, ' with many of the animals wintering in the river bottom area. The proposed exploration drilling should not impact the game found within the proposed notice of intent area. ' Raptors have nested in cliffs formed by sandstone outcrops in the area, primarily south of all drilling activities. Due to the distance from these areas, it is extremely unlikely and not anticipated that nesting activities would be impacted by any drilling activities. A field survey of the immediately adjacent Williams Fork Mountain Tract, was performed by the Bureau of Land Management in August of 1982. No known threatened, endangered, or sensitive plant species were found on the tract. As the proposed notice of ' intent area is primarily composed of pastureland and cropland it is extremely unlikely that any endangered plant species would be present in the area. Consequently, there will be no significant ' impact to any threatened and endangered species.