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4.15 -17 Revision Date: 6/21/11 <br />Revision No.: TR -84 <br />providing some soil stabilization function. The entire trial area will be seeded <br />with the modified Sagebrush Steppe Mix as seen below. In the. event <br />individual components of the mix are unavailable, guidance from the Division <br />will be sought prior to implementation of the trial. Weedguard fabric or it's <br />equivalent will be placed in rows (at intervals of approximately 22 feet) and <br />will be used to severely reduce competition between the containerized <br />plantings and annual weeds and grasses. Please see the "Expected Field <br />Implementation Plan for Aspen/Tall Shrub Field Trials" illustration below. <br />e) Containerized 2 -3 foot serviceberry and mahogany plants will utilized from the <br />most similar source elevation available in the region available. Based on the <br />volume of containerized plants included in the trial (550), and the expectations <br />of success, a combined number of (300) serviceberry and mahogony plants <br />within the trial during 2016 (from seed and live plantings) will be considered <br />a successful demonstration of Coloywo's ability to proceed further with <br />additional plantings. Supplemental planting of serviceberry and mahogony <br />will be initiated in year 2012 should survival of the 2011 plantings be less <br />than 350 stems /acre. Alternative methods for demonstrating compliance with <br />the establishment of Tall Shrub habitat in South Taylor will be initiated with <br />the Colorado Division of Wildlife during 2013, should failure of this trial <br />continue. <br />f) Containerized serviceberry and mountain mahogony plants will be placed <br />through the weed barrier by hand (or by mechanical means if practical and <br />economically feasible) as per best practices with regards to depth, etc. Proper <br />planting holes are important in transplant survival. Holes should be two to <br />three times wider than the root ball. If the soil is clay and the sides of the hole <br />become glazed during digging, the sides of the hole should be roughened with <br />a spade. Holes should be prewatered before planting in dry soils. This <br />prevents initial postplant water from migrating away from the root ball. Every <br />effort will be made to plant at the same depth that the tree or shrub was <br />growing in its previous location. Damaged roots will be clean -cut with a sharp <br />blade prior to planting. If any circling or kinked roots are discovered during <br />the transplanting procedure, they will be severed to prevent future girdling of <br />the plant. Every effort will be made to orient the tree or shrub in the same <br />direction, relative to the sun, as it was facing in the previous location. <br />Plantings will be performed in the fall by properly trained personnel. <br />Serviceberry and mountain mahogony planting densities will be one plant <br />every four linear feet (1/2 serviceberry, 1/2 mahogony) within a row. <br />g) Colowyo will place contour furrows immediately above approximately every <br />third fabric row (approximately every 66 feet). The trial will exhibit <br />alternating bands of modified Sagebrush Steppe mix (approximately 17 feet), <br />fabric /containerized plantings (4 -5 feet wide), modified Sagebrush Steppe mix <br />(approximately 17 feet), fabric /containerized plantings (4 -5 feet), modified <br />Sagebrush Steppe mix (approximately 12 feet) contour furrow (approximately <br />5 feet). This pattern should allow for specific emphasis on containerized <br />plantings establishment while minimizing the risk of excessive erosion during <br />the period of early establishment of the trial area. <br />4.15 -17 Revision Date: 6/21/11 <br />Revision No.: TR -84 <br />