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__._ .: <br />Mr. Marvin E. Brown -2- October 4, 1982 <br />grass at a broadcast rate of 6.0 Ibs. PIS/acne) should be described; and the <br />use of other materials along with, or instead of, topsoil (such as crusher <br />fines) should be described, if planned. <br />2. Any processing of the quarried rock should be described and the processing <br />area should be shown on the map. <br />3. The mining plan mentions that the 3 acre outcropping of rock will be <br />entirely mined. However, the map shows the rock outcrop to be (an estimated) <br />1.8 acres in size (the red area). Where 'is the 3 acres of the rock outcrop <br />that is actually to be mined, and what activities will occur on the other <br />1 acre that will not be quarried? <br />4. More details of the mining should be provided. Will mining occur using <br />benches, one large highwall, a more gentle slope, or some other method? What <br />will be the configuration of the working face? <br />5. What is the expected timetable of mining for this operation? <br />6. How will sediment on the site be controlled such that it does not <br />move into adjacent drainages? For example, will berms and/or a sediment pond <br />be used to contain on-site drainage? <br />Exhibit D <br />1. Please provide more detail on the planned drainage diversions. How <br />will these diversions be sized? Across-section might be useful in this regard. <br />2. Reference my comments above concerning sediment control. <br />Exhibit E <br />I. Does the given reclamation plan cover the entire 4 acres of the permit <br />area? Why is the 1 acre that is not to be quarried to be regraded and <br />reclaimed? Is it to essentially serve as a source of topsoil for the other <br />3 acres? <br />2. The final contours described in the olan are not clear. Will the entire <br />area be essentially flattened to gently sloping, or will there be 2:1 sloping <br />areas and granite highwalls? If highwalls are an option, when will this <br />option be exercised; what will be the height of any highwalls; and where will <br />these highwalls be Left? It may be that yov wish to now be permitted for a <br />flat area with no highwalls and amend your permit if highwalls are planned <br />later. <br />3. I suggest a higher mulching rate for this site. A rate of 2,000 lbs/acre <br />on areas having slopes of 3:1 or Less and a rate of 4,000 Ibs/acre on areas <br />sloping at 3:1 or more would be more likely to promote successful revegetation. <br />9. What is the planned density of mountain mahogany in final reclamation? <br />If seeding of this shrub does not work, transplanting of seedlings may be <br />necessary. Please clarify your plans in this regard. <br />