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<br />16 <br /> <br />C. Planting Site Preparation <br />All debris, wood chips, pavement, concrete and rocks over two inches in diameter shall be <br />removed from the planting pit to a depth dictated by the root ball size of the tree being installed, <br />unless approved otherwise by the arborist. <br /> <br />D. Planting in Difficult Soil Conditions <br />1. Trees planted in turf areas shall have a ring of mulch. The turf shall be maintained a <br />minimum of one foot from the new tree stem, with mulch placed on top of the root ball. <br />The mulch shall be six inches away from and not touching the tree stem. <br />2. Occasionally, tree planting must occur in poor or difficult soil where standard planting <br />techniques will result in poor-to-average performance or mortality. In this case, <br />alternative or specified soils, such as engineered, amended or structural urban tree soil <br />mix, including written specifications and physical samples, shall be submitted for <br />approval by the arborist. <br />3. Planting Cue Card from International Society of Arboriculture located in Appendix C. <br />Section 6: Replacement and <br />Planting of Trees (continued)