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Coulson Excavating Company, Inc. - Bonser Gravel Pit Exhibit E -Reclamation Plan The current vegetation type on the site is pasture and hayfields dominated by smooth brome (Bromopsis inermis). Hay is harvested from the fields 3 or 4 times each year starting in early June. Restoration will consist of seeding remaining overburden storage area, in addition to the backside of the reservoir berm. The recommended seeding method is by drill, and seeding rates assume this method. The overburden stockpile will also be seeded with the seed mix in Table 2, with hay mulched and crimped to minimize erosion. An aggressive mowing program will control noxious weeds on the stockpiles. Table 2 Species (Variety) hate -pure live seed NativeJ[ntroduced Wet/Cool Cost ' (pls) Ibs/ac Season pls/ac Thickspike wheatgrass 8,0 to 10.0 Native Cool $I 1.70 (Critana) Sideoats grams 5.0 to 7.0 Native Warm $7.25 (Vaughn) Switchgrass (Nebraska-20) 4.0 to 6.0 Native Warm $5.00 Alfalfa (Nomad) 3.0 to 5.0 Introduced N/A $1.90 TOTAL 20.0 to 28.0 528.85 Based on Table 2, an application rate of roughly 20.0 to 28.0 pls/acre will be used. Topsoil should be disked prior to seeding. The estimated cost of disking is $60 to $80/acre. Fertilizer is recommended for the reclamation process. A standard application of fertilizer will be used at a rate of 250 Ibs/arce as shown in Table 3: Table 3 Cost/Pound based oo Total Costs Fertilizer Standard a bulk rate of Cost/Acre (for 7 Rate Ibs/ac $327.00/tOa BCrea) Diammonium Phosphate 18- 250 $0.55 $137.50 $962.50 46-0 (46-53% avail. PZOS with 18-21 %N) The total area to be seeded is approximately 7 acres. The total area to be fertilized is 7 acres. Seeding and fertilizing will be completed after the overburden and topsoil is replaced, smoothed to conform to the existing topography, and disked. Optimal periods of seeding are in the fall (after November 1st) or in the spring from late March to April 30th. Mulching will not be