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• <br />8. The drainage areas are incorrect as shown. If it is the intent of <br />Ditch No. 2 to divert the runoff from the entire ulch above the <br />itc t e rainage area is incorrect as s own. If it is correct <br />as shown, then the upper portion of the oulch will flow over the <br />ortals ana ran ana onto the alsturbed area. It will not be <br />diverted into Ditch No. 1 since this ditch is esi ne to divert <br />f ows upstream o t e gu c an the existing gu c is not propose <br />to be extended to the new diversion. <br />In an case, some modification to the ditch desi ns will be <br />necessary. The Division recommends iverting a these f ows away <br />from the disturbed area either throw h Ditch No. 2 orb extendin <br />t e u ch to meet Ditch No. 1. Peer ess Resources, Inc. ma find <br />t at ivertin f ows to Ditc No. 2 wi a iminate t e otentia <br />for f oodino an seeoaoe at t e Aorta and fan entries. <br />u <br /> <br />RESPONSE: <br />It is not the intent of Diversion Ditch No. 2 to collect runoff from the <br />entire gulch above the upper portion of the mining operation. This <br />drainage has been collected utilizing Diversion Ditch No. 3, as shown on <br />the Mine Facilities Map (Map 12) and sized according to calculations <br />shown in Appendix 1. <br />9. Where will Ditch No. 2 discharoe and how will these flows reach the <br />RESPONSE: <br />Flows from Diversion Ditch No. 2 reach the existing drainage and the <br />south side of Highway 160 by a culvert passing underneath Highway 160 <br />east of where the natural drainage from the gulch discharges. <br />10. The disturbed area drains a as currentl shown a ears to be <br />a roximate 10 acres lar er than the number used in the drains e <br />ca cu ations ma ins this area 38 acres instead of 28 acres . <br />RESPONSE: <br />The drainage area included in the sizing of the sediment pond has been <br />reviewed as shown on the Mine Facilities Map (Map 12). Total drainage <br />area is estimated to be 22.4 acres while the disturbed area portion is <br />estimated to be 11.4 acres. Therefore, previous design calculations for <br />the sediment pond of 28 acres total drainage basin size and 12 acres <br />-42- <br />