Laserfiche WebLink
5, <br />Technical Revision No. 86 <br />January !9, 2000 <br />Page 3 <br />36. Ditch DCW-8A and DCW-8B have been seeded, but until vegetation is adequate the <br />enclosed design is for an earth-lined channel. The 100-year, 24-hour event is diverted away <br />from the RPE through ditch DCW-8A and DCW-8B, which flows to the unnamed drainage <br />to the east of the RPE. <br />37. The 100-yeaz ditch designs for DCW-8A and DCW-8B are enclosed. <br />Other Changes: <br />The MB-2R routing diagram has been revised to reflect changes to the drainage around the <br />portal storage area and Material Storage Bench due to the construction this summer/fall. <br />2. Ivtap 53B has been revised to designate the area near the mine dewatering building in <br />Sylvester Gulch as a material storage area and corrected the contours in this azea. <br />3. In addition to the changes noted above, Map 54 has been revised to add watershed locations <br />associated with the North Soil Storage Area and reflects the changes to the drainage around <br />the portal storage azea and Material Storage Bench due to the construction this summer/fall. <br />4. Map 54B has been revised to correct the ditch locations and shade the SAE areas at Shaft <br />#3, the degas pad, and electric borehole pad. <br />Please call if you have any additional questions. <br />Sincerely, <br />~ 1 <br />-1 <br />l,t~L~l/l~~ t;~~ <br />hristine E. Johnst n <br />Environmental En ine r <br />cc: Phil Schmidt <br />tr86c.doc <br />