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Mr. Kent Gorham, CMLRD <br />October 19, 1992 -page 3 <br />14. There are two culverts (48-inch diameter) at this location, one is labeled A-5 and the other A-Sa as <br />reported on M51 Map (sheet 3 of 4). Table 4.8.1 "Haul Road Culvert Sizing" is revised to identify <br />the A-Sa culvert more aceuratety. <br />15. Paragraph 5 (sewnd to last sentence) page 4-239, is changed to more clearly convey that TSS values <br />for surface water monitoring in No Name Gulch were higher prior to mining than during mining <br />activity. <br />16. I concur that reporting water level elevation is somewhat redundant since this parameter is included <br />in all groundwater lists. However, some wells have no other sampling requirement than recording <br />the water level so this is a reminder to our sampler to ensure sampling for this parameter on a quar- <br />[erty basis for all wells. <br />17. Carbonate have never been a water sampling parameter for surface water sites. Carbonate sam- <br />pling is only required for List B groundwater monitoring and only when the ph of the sample <br />exceeds 8.3. <br />18. In 1985, Trapper conducted extensive studies of the Flume Gulch area for potential as an AVF. <br />This information will be collated and submitted to the Division [or evaluation as a separate report <br />at a later date. <br />19. Page 4-226f has been revised to discuss any potential impacts to hydrologic systems in the eastern <br />portion of the permit area. <br />20. Trapper's water right, case W-1178-77 (Well Permit #22140-F), is for 25 gpm absolute and 291 gpm <br />conditional for pit dewatering and water quality vestment, road wetting, dust suppression, stock <br />watering, wildlife and industrial uses all in relation [o Trapper's coal mining operations. This right <br />contains a Plan of Augmentation that provides a substitute suppty of water to compensate senior <br />appropriators for depletion, if any, resulting Gom the surface mining operations and associated <br />water use fn the above water right These amounts were determined by the quantity of water that <br />Trapper can contain fn deadpool storage and the amount lost through evaporation and other men- <br />tioned uses for the life of the mine. The water pumped vom the pits is considered tributary to the <br />Yampa River. No water right is needed for that water that is allowed to flow to the Yampa. Aright <br />is needed onty for the stored and ttsed water that is prevented from flowing to the Yampa. <br />21. A well will be instatled to monitor the Third White Sandstone in 1993. However, it is recommended <br />that the well be located in the southwest corner of Section 30, T6N, R91W instead of the area sug- <br />gested within the adequacy response. This allows a better distnbuuon of wells between existing 3rd <br />White Sandstone wells P8 and GP-9. Revised map M52 shows the proposed location (GP-10). <br />22. The Coyote and Grouse watersheds have been reconfigured so that all Branch 1 channels are con- <br />tinuous and coincide with the main channel. In addition, the model was rerun under the revised <br />