6.12 Exemptions to the tree location standards: Where special conditions <br /> exist, the Urban Forester may waive these tree planting location standards. Such <br /> a waiver shall be on a case by case basis. <br /> 7. Street Tree Planting Standards. <br /> 7.1 Planting Season. Bare root trees may be planted only between <br /> October 15th and March 15th unless otherwise approved by the Urban Forester. <br /> Balled and burlapped or container grown trees may be planted only between <br /> September 15th and April 15th unless otherwise approved by the Urban Forester. <br /> 7.2 Site preparation. <br /> 7.2.1 Balled and burlapped and container grown trees: <br /> 7.2.1.1 Dig a shallow, broad tree planting hole at least 1-1/2 <br /> times the diameter of the root ball and to a depth that will allow the <br /> trunk flare to be level with existing ground. (See Appendix B.) <br /> 7.2.1.2 Score the edge of the hole to leave the edges rough <br /> and not smooth. This will encourage rooting into the existing native <br /> soil. <br /> 7.2.2 Bare -root stock: <br /> 7.2.2.1 Dig tree - planting holes 1' wider than the spread of the <br /> roots to allow the roots sufficient area. The hole shall have sufficient <br /> depth to allow the trunk flare to be level with the existing ground. <br /> (See Appendix B.) <br /> 7.2.2.2 Leave a mound in the center of the hole to drape and <br /> spread roots in their natural position over the mound. (See Appendix <br /> B.) <br /> 8. Planting General Conditions. <br /> 8.1 Balled and burlapped trees: <br /> 8.1.1 Trees shall have a sound ball that has not been allowed to dry <br /> out at any time. <br /> 8.1.2 The root ball shall be firmly attached to the trunk. <br /> Exhibit B to Street Tree Plan Agreement <br />