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the sole underground opening. If there are other vent holes, etc., associated with this operation which have not been <br />documented in other permit files, please provide the necessary additional information. <br />Please explain what the "secondary" road which enters the site from the southwest is, and what the appazent upper <br />bench is for. <br />The alignment of the "primary" access road entering the site from the northwest does not match the alignments <br />depicted on previous maps (1980 and 1997). Were those road alignments abandoned and/or reclaimed? Did they <br />exist? <br />There are no overhead electric power supply structures shown. Is this an oversight, or do none exist? <br />It is assumed that all areas shown in brown with hachures denoti; waste rock dumps, which are to be graded to 2:1 <br />slopes or less as part of final reclamation. <br />I agree that the new surface detail superimposed on the map base must be tied back in to the topography, for both <br />the final mining and reclamation maps. Please be reminded that reclamation maps should depict only those features <br />which will remain onsite after reclamation is finished. All roads, buildings, berms, etc., that aze to be removed <br />should not be included on the reclamation maps.. Stormwater controls which are to remain should be shown. <br />'T'here is a delineation presumed to show the outer"footprint" of all past disturbance, in addition to the labeled <br />affected area boundary. This irregular footprint is entirely contained within the polygon of the affected area <br />boundary. However, the boundaries were never marked on'the gtound, and it is fortunate-that mining activities <br />never exceeded the boundary. It will be important that all permit boundaries for this permit (and the other 110 <br />permits) be marked. (The affected area boundaries for the 1,12 permits must also be marked.) Please explain why <br />the irregular disturbance area delineation contains only a part of the catchment berm at the toe of the waste dump. <br />Summary <br />These comments and questions will hopefully assist you in finalizing the maps for this permit, by explaining how <br />this Division proceeds in determining which areas and features are to be included in the bonded reclamation <br />liability, and within the boundary on the maps. Your preliminary map is a very good start, and should take minimal <br />effort to reach a complete and adequate stage for our uses. <br />I look forward to receiving the revisions. Please ensure that you submit all maps, especially oversized maps (larger <br />than 11" x 17") m duplicate. Additionally, all final maps are to be signed by the prepazer. As before, please do not <br />hesitate to contact me if there are questions. I may be reached, and/or the maps mailed to the Division's Durango <br />field office: 701 Camino del Rio, Room 125, Durango, CO 81301; telephone 970/247-5103 or fax 970/247-5104. <br />Sincerely, <br />Bob Oswald <br />Environmental Protection Specialist ". <br />A:\topaz map/rco <br />