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7. A copy of the San Juan Basin Health Unit permit <br />is enclosed. <br />8. 'the map has been changed to include the Leech field <br />and well location Eor the testing and measurement <br />of the water table. A four inch hole will be drilled <br />10 feet deep. A two inch p.v.c. pipe will be installed <br />with the bottom five feet being perforated and packed <br />on the outside with pee gravel. The upper five Eeet <br />will be bentonited. This pipe will be capped and <br />tested for water quality and depth every April and <br />October. A record of these tests will be kept. A <br />diagram is attached for both wells, Leech field and <br />sediment pond. <br />9. La Plata will ensure Chat all soil nomenclature for <br />the text corresponding exhibits and corresponding <br />maps is employed. <br />10. A. The mine fan has been added to map 11. <br />R. The electrical substation has been added to map 11. <br />C. The statement on planned pillar extraction on <br />page 2.05-12 has been omitted. At this time we <br />do not know what method lur pillaring will be <br />accepted by rl.s.il.n. <br />D. The water well has been added to map #7. <br />E. The overland conveyor has been added to map #11. <br />F. The coal loadout area is shown on map #11. <br />G. The water monitoring points have been added to <br />map #7. <br />11. The NPDES permit <br />soon as it is re <br />12. The design for a <br />enclosed. <br />13. This information <br />14. Calculations has <br />has not been issued to date. As <br />ceived, it will be submitted. <br />nonclogging dewatering system is <br />is included in this letter. <br />been submitted with this letter. <br />15. At present and throughout this last winter the pond <br />has maintained a water level of two Eeet. The State <br />Water Engineer on his inspection of this pond 5-15-87 <br />stated that the two feet of water presently in the <br />pond will be maintained as this is the ground water <br />level elevation. A letter from the State Water En- <br />gineer is enclosed. I don't feel that it is in- <br />appropriate to be able to use the sedimentation pond <br />as a stock pond as well as a sedimentation pond. If <br />-~- <br />