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Mr. Larry O'Brian -4- September 29, 1983 C. The seed mix for overburden areas puts an emphasis on sweetclover due to planting both yellow and white varieties. From the Division's experience, drill planting more than 1 pound per acre of sweetclover causes sweetclover to become excessive at the site at the expense of other species in the seed mixture. D. Two different seed mixtures are no longer needed since all of the area to be reclaimed and revegetated will be topsoiled. „jj~ The text on page 22 mentions "Erosion control ditches will be ~ ~ constructed". Please specify where and how these ditches are to be 3~,~~~ co constructed. ~v ~5,~ Exhibit F - Reclamation Plan MaD ~P ~ a~yiP~ There are two drainage areas entering the permit area ]ust south of ~ °~ Alameda Avenue. To reduce the Dotential for erosion and gullying of the `~~,c~ reclaimed slope, should not the drainage ways be continued down the c°,~,~° reclaimed slope to the pit floor? ~.~ S`~ Exhibit G - Water Information ~~'~ This exhibit specifies this operation will not affect surface or ,~~'O' ground water. However, on the map supplied with exhibit J, one of the \~y ~~areas in Phase 1 has been identified "Pond area". Please clarify this ,Q°~~E o apparent discrepancy. ~° E. Exhibit L - Reclamation Costs ~1,~ The basis for determining reclamation costs for this site is at the ~ point of maximum surface disturbance. The operator has identified this b point as being when stage 5 has been completely mined and stage 2 is 65% mined. After reviewing the mine plan (Exhibit D), it appears that at °~° ~, this same time there will be disturbance to stages 6 and 7 for topsoil 3~ ^ stockpiling purposes. Therefore, the operator needs to provide reclamation costs for seeding these two areas. Please specify to what ~'>;~° xtent stage 6 and 7 will be disturbed and calculate reclamation costs ~ correspondingly. (If all of the acreage in stages 6 and 7 are disturbed, S^ ° the Division has calculated seeding costs to be ;3,136.00 for 13.72 ~~q~° acres.) \fi~ ~ The text on page 50 specifies reclamation and revegetation °~ activities are required on 52.69 acres. The chart on this same page, however, specifies 69.29 acres need to be revegetated. The discrepancies between these two numbers is due to differences 1n the amount of acreage 1n phase 2 requiring revegetation (47.3 acres on the chart versus 30.7 acres 1n the text). Please specify why there is this discrepancy and why not all of the acreage in phase 2 requires revegetation. If 1n fact 69.29 acres needs to be revegetated, please increase reclamation costs correspondingly. (If to fact 69.29 acres need to be reclaimed, the corresponding reclamation costs need to be increased by ;15,645.50.)