Laserfiche WebLink
Mr. Kent Gorham <br />July 26, 1997 <br />Page 4 <br />~r~ 1 17. This question will be answered in a subsequent submittal. <br />a~ ~~~128. A plan view and profile for the Lorencito Haul Road may be found as Map 2.05.3-3c. <br />~~ 135. Page 2.05-23 has been modified to reflect a commitment to restrict travel across Arizona <br />crossings when water is flowing in the roadway. <br />138. The plan view and profile for the Lorencito Access Road is attached as Map 2.05.3-3d. <br />x\`146. Exhibit 15-15 has been completely modified. Please replace the current drainage design with <br />the attached packet which documents 100-yeaz drainage diversions azound fills using rip-rap <br />rather than shotcrete in channels requiring armoring. Delete Figures EX15-1 Sa and EX15- <br />15b. <br />~~~` 147. LCC has submitted a plan to analyze pond embankment foundations and requests Division <br />,p comments. <br />S~ 1 148. Coal Loadout <br />• ~~ d. The loadout pond has been modified to reflect a revised drainage azea (the east side of <br />the tracks) and to extend the lengthlwidth ratio. Please replace the loadout drainage <br />design section with the modified Exhibit 15-4. <br />~~- e. Table 15-14 depicts the design data for the loadout. <br />DlL f. The pond specifications for this pond have been modified on Exhibit 15-14. <br />Fi112 <br />olL g. A revised run for Pond 2 has been prepared which dewater a ] 0-year, 24-hour storm in <br />3.3 days rather than 120 days one 3", one 4" and one 6" orifice at three levels. Please <br />replace Exhibit 15-7 in its entirety. Exhibit 15-14 reflects the design changes. <br />Fi113 <br />~~j h. The pond specifications for the Fill 3 pond have been modited on Exhibit 1 ~-14 <br />6~ i. The Jeff Canyon surface mine ponds aze conservatively designed to reflect a worst case <br />topography, soil and vegetation condition at the site, namely immediately following <br />salvage of topsoil on the existing topography. This condition will exist for less than a <br />few months, at which time mining will commence, and a depression will exist on the <br />upper slopes. This will reduce the water and sediment runoff to the pond. Subsequently, <br />as the post-mining topography is constructed, benching will modify the hydraulics and <br />