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~i <br />Mr. Kent Gorham <br />July 26, 1997 <br />Page 5 <br /> <br />subsequent sediment runoff to the site. Sediment delivery ratios will decrease <br />significantly from the modeled storm. LCC recognized the necessity to meet applicable <br />performance standazds and effluent regulations, but feels that the pond will perform <br />adequately. <br />Fi115 <br />LCC is confident of its current designs, and is refraining from re-design of the Fill 5 pond <br />at this time per the azguments found in 1481. <br />k. The Fill 5 required sediment storage level has been changed on Exhibit 15-14. <br />150. LCC anticipates and accepts the stipulation associated with the geotechnical investigation <br />of the MSHA ponds. <br />151. LCC anticipates and accepts the stipulation associated with the geotechnical investigation <br />of the MSHA ponds. <br />164. A reassessment of the potential worst ease disturbance associated with culvert 124 + 79 <br />yielded dischazge of 254.63 cfs and the need for an 84" culvert a[thatlocation. Please <br />replace the revised culvert run in Exhibit 14 as well as the Jeff Canyon Haul Road Ditch and <br />Culvert Specifications Table. <br />183. LCC accepts the stipulation on the geotechnical study. <br />184. The overlay (Figure 3.02.2-1) has been recreated and is attached. Terracing is currently <br />found throughout the post-mine topography as shown on Map 2.05.4-1. <br />185. The fill #1 designation on Figure 2.05.4-11 has been eliminated as the cross-section no <br />longer passes through Fill 1. <br />LCC conceptually accepts the stipulations identified in the July 26, 1997 adequacy letter. Please <br />forward a draft copy of the stipulations to LCC as they aze prepazed. We would like to be included <br />in the discussion of verbiage and the stipulation dates. Please do not hesitate to call with questions. <br />Sincerely, <br />~~~~ <br />Cathy Begej <br />Assistant Project Manager <br />attachments <br />