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BAMBERG ECOLOGICAL <br />Environmental Consulting Services <br />_. ...... . <br />adequate amount of seed, the locally collected seed was supplemented with commercially3 <br />grown grass seed. This grass seed mix consisted of four species: western wheatgrass (54% by <br />wt.), sanddrop seed (26%), Indian rice grass (17%), and blue grama (3%) at approximately 90% <br />pure live seed. Thus, a total of 513.9 bulk pounds of commercial grass seed were mixed with <br />the approximately 443.4 bulk pounds of collected shrub and grass seed for a total of 957.3 bulk <br />pounds distributed on the unvegetated portions of the 220 acre site (see Photo 2). <br />Seed Dispersal <br />Seed was sown as soon after grading as possible while the surface was relatively loose and <br />irregular, which facilitated seed capture and incorporation into the soil surface. This timing elim- <br />inated the need to cover or mulch the seed after dispersal since wind and water splash, which <br />are anticipated for the fall/winter climate, incorporate seed into the soil. Late fall/early winter <br />seeding also allows for the seeds to meet germination or dormancy requirements naturally met <br />by the winter season and to take advantage of any significant winter precipitation. <br />Seed was manually broadcast on October 24-26, 2008. The locally collected and commercial <br />grass seed were mixed in 5 gallon buckets (see Photo 2) and hand broadcast on the site (see <br />Photos 3 and 4). A full crew of four people was utilized during this period to quickly and effi- <br />ciently cover the main, relatively flatter areas of the mine. Those areas that were deemed to <br />have the best potential revegetation success were concentrated on first for heavier seed disper- <br />sal. Ingrid Bamberg of Bamberg Ecological returned on November 8-9, 2008 to complete the <br />seeding of the remaining, rougher terrain areas. <br />The un- and low-vegetated portions of the entire approximately 220 acre site were seeded at <br />least lightly. Thus, the seeding rate varied but was estimated to average 4 pounds of seed per <br />acre. This is calculated by figuring the 957 pounds of bulk seed at about 85% pure live seed or <br />approximately 813 pound of seed spread over 200 acres. <br />Respectfully, <br />Ingrid Bamberg <br />Senior Ecologist <br />3 Southwest Seed Inc., 13260 County Road 29, Dolores, CO 81323, (970) 565-8722. <br />2622 Valentia St. * Denver, Colorado 80238 * (303) 933-7291 3