Laserfiche WebLink
f) Descriptions and Specification of Reclamation activities <br />i) Final Grading <br />Final slopes will be graded to 3H:1V <br />ii -v) Seeding, Fertilization, Revegetation, Topsoiling <br />Topsoil Replacement/ Revegetation <br />Topsoil will be replaced to an approximate depth of 1 ft for the areas shown in as <br />topsoil/revegetation areas in Exhibit F Sheets 1-2. The overburden stockpile to <br />the west of Cell 2 will continue to supply fill material after the reservoirs are <br />reclaimed, therefore only revegetation will occur in that area. Once the fill has <br />been removed from the site, the underlying topsoil will be reseeded again. <br />Seeding and Fertilizing <br />The proposed seeding areas are shown on Exhibit F — Reclamation Plan Map. <br />The recommended seeding method is by drill and seeding rates assume this <br />method. The species composition of the seed mixture recommended for <br />reclamation is shown in Table E-3 below. <br />Table E-3. Recommended Seed Mixture <br />Species (Variety) Rate — pure live <br />seed (PLS) <br />lbs/ac <br />Native/ <br />Introduced <br />W/C <br />Season <br />Thickspike wheatgrass 8.0 to 10.0 Native Cool <br />Critana) <br />Sideoats grama (Vaughn) 5.0 to 7.0 Native Warm <br />Switchgrass (Nebraska -28) 4.0 to 6.0 Native Warm <br />Alfalfa (Nomad) 3.0 to 5.0 Introduced NA <br />TOTAL 20.0 to 28.0 <br />Based on this seed mixture, an application rate of approximately 20.0 to 28.0 lbs <br />PLS/ac will be used. Topsoil should be disked prior to seeding. It is <br />recommended that fertilizer be utilized for reclamation. A standard application of <br />fertilizer will be used and applied at a rate of 250 lbs/ac as shown in Table E-4. <br />Fertilizer <br />Table E-4. Fertilizer Application <br />Standard rate <br />lbs/acre <br />Diammonium phosphate (18-46-0) 250 <br />46-53% available P2O5 with 18-21 % <br />N)