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Wattenberg Disturbance Reclamation,Exhibit D—Reclamation Plan April 2022 <br /> EXHIBIT D - RECLAMATION PLAN <br /> This Reclamation Plan is provided to document actions recently taken to address the affected area within which <br /> imported topsoil was removed after the topsoil was inadvertently placed within this area which is outside of the <br /> DRMS permitted area at Wattenberg. The imported topsoil was removed to the previous ground surface(i.e., to <br /> the original topsoil layer). A summary of the sequence of activities is provided in Exhibit B—Site Description. <br /> The land slope gradient is flat which is the same under reclamation as before the disturbance took place. No <br /> topsoil or other materials previously placed in the affected area remain and no site features or structures changed <br /> as a result of the reclamation. Estimated costs for reclamation are not provided because reclamation has already <br /> taken place. <br /> The affected area (see Map E-101 in Exhibit E)was seeded, fertilized, and mulched on March 28, 2022. <br /> Reclamation did not require placement of additional soils or other materials. To complete the reclamation,two <br /> tractors and associated equipment, a disk,and equipment to apply seed, fertilizer, and mulch were used. Ground <br /> preparation involved disking the soil to prepare the seed bed. Then, the Upland Loam Seed Mix(below)was <br /> requested by the City of Aurora for the affected area. This mix was drill seeded and 500 pounds per acre of <br /> organic fertilizer were applied, along with 2 tons per acre of straw mulch which was spread and crimped. <br /> Upland Loam Seed Mix <br /> From City of Aurora—North Campus Operations and Maintenance Manual <br /> — Pure Live Seed <br /> Common Name Scientific Name %of Mix PLS unds/acre <br /> Blue Grama Bouteloua gracilis "Hachita" 20 1 <br /> Bottlebrush Squirrettail Elymus elymoides "Sand Hollow" 5 1.1 <br /> Buffalograss Buchloe dactyloides "Sharps" 15 11.5 <br /> Green Needlegrass Nassella vindula "Lodorm" 5 1. <br /> Native Prairie Junegrass Koelena cristata 5 0.1 <br /> Sand Dropseed Sporobundrus 10 <br /> lus crypta 0.1 <br /> Sidats Grama Bouteloua curtipendula "Vaughn" 5 <br /> eo 1.1 <br /> Western Wheatgrass Pascopyrum smithii Arriba" 25 9.9 <br /> Slender Wheatgrass Elymus trachycaulus "Pryor" 10 2.5 <br /> Total 28.8 <br /> OTETRA TECH Page III <br />