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. Mr. Dean Massey • March 1, 1978 Page 4 formation. Because of the impermeability of this formation, water passes through it only in fractures, which conduct most of it to the outcrop where it is produced as seeps and springs. The springs emerge from the so-called "broken zone" (shown on the stratigraphic column submitted as part of Exhibit G), approximately 100 feet above the highest elevation of the retort and associated mine workings. Nonetheless, a tiny percentage of this water is carried through fractures in the Green River formation through other impermeable strata called the Four Senators to the region of the retort. There will be an "air level" above the top of the next planned retort, Retort 6, separated from the retort itself by a sill pillar approximately 50 feet thick. The air level will be designed to serve as a water collection gallery and to drain any water collected away from the retort. The drifts leading from the air level will also be designed so that any water that accumulates in the gallery will flow by gravity away from the spent retort. Thus, water flowing down toward the top of Retort No. 6 via any occasional fractures below the Broken Zone will be diverted around the retort. The area around the retort will contain several drifts, raises, inclines and other work- ings that would intercept water which could reach the retort. Any water encountered in the retort itself ("retort water") will be collected in contained facilities segregated from the mine water, and recycled (after separation of the oil) to a Thermo Sludge boiler for further use in a closed system." You also asked for a map showing a bird's eye view of the location of the retorts. Enclosed are a topographic base map and a mylar overlay showing the property boundaries, the mahogany outcrop (usually appearing on sheer cliff) and the loca- tion of the existing Retorts 1-5 and scheduled Retort 6. Furure re- torts will first be located in the Northeast quarter of Section 25 or the Southeast quarter of Section 24, Township 2 South, Range 95 West of the 6th P.M., north and west of Retorts 4,5 & 6. Additional