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ADDITIONAL COMMENTS SNYDER QUARRY PERMIT ~ M-77-210 MAP: Included is a map that shows the key features of the operation, the location of mining and reclamation, and other information. No map information is provided for the road corridor, as that will be discussed below. Much of what needs to be presented regarding the road cannot be shown on a map. SITE CONDITION.• Relatively little change has occurred in the condition or layout of the operation during the last year. That lack of change is a reflection of the mining occurring primarily in the open pit area which is being deepened. only a moderate amount of mining was done around the perimeter of the open pit and that was only to widen the top so working conditions in the bottom are improved. Processing facilities, stockpiles, and mine access roads were unchanged. QUARRY RECLAMATION: In the last year, one an a half more benches in Phase I were completed, backfilled, topsoiled, and seeded. The concurrency of the mining and the reclamation could hardly become any greater. The map shows the area that was reclaimed. The same seed mixture used on previous benches was used here. An interesting aspect to the revegetation has become evident that needs to be investigated more fully. Although the same mixture has been planted on all benches, the resulting vegetation, at least so far, is rather different. Soil quality and type has not changed and aspect is very similar as are the seed mixtures. Differences in seed viability could be implicated ezcept that all seed mixtures are ordered to produce equivalent pure live seed values, so differences in viability are eliminated. The only difference are changes in climatic patterns from year to year. It is not known whether these differences will continue to diverge or will eventually converge into a similar vegetation form. At least cursory investigations, if not intensive investigations, will be done on this interesting variation. ACCESS ROAD: As stated above, little of what has been accomplished on the access road can be shown on the map. Therefore, the following sections will address the road. This includes work done to further upgrade the drainage system, maintain the sediment control system, and reclaim the major road side disturbances. SEDIMENT CONTROL SYSTEM.• The sediment control system for the quarry outflow primarily involves the two sediment ponds shown on the map. These ponds catch outflow from the access road where it enters the quarry and what little sediment comes from the visual berm. Both ponds received considerable water and sediment in the last year, but are far from reaching the point where they would need to be cleaned. No sediment was removed during the last year. If the rate of sediment load into the ponds continues as it did last year, it is estimated the ponds will only need to cleaned about once every three or four years. Because the ponds are beside the road it is easy to monitor the sediment level in the ponds. ROAD DRAINAGE SYSTEM.• As a result of a major storm that occurred last summer, further improvements to the road drainage system were constructed during the last year. These improvements included work between HR5 and the entrance gate near the Cedar Heights Guard House. Improvements included curbing, ditching, energy dissipators in the ditches, roadside topsoiling and seeding, and improved diversion into HR5 and HRfi. Page 1 Supplemental Sheets M-77-210 1992 Annual Report