complete drainage report rev 9

Appendix 2 - Planting Requirements for Filterra® HC Systems Plant Material Selection * Select plant(s) as specified in the engineering plans and specifications. * Select plant(s) with full root development but not to the point where root bound * Use local nursery container plants only. Ball and burlapped plants are not permitted. * For precast Filterra HC systems with a tree grate, plant(s) must not have scaffold limbs at least 14 inches from the crown due to spacing between the top of the mulch and the tree grate. Lower branches can be pruned away provided there are sufficient GRAFT SOIL SURFACE scaffold branches for tree or shrub development. CROWN ™ * For precast Filterra HC systems with a tree grate, at the time of installation, it is required that plant(s) must be at least 6” above the tree grate opening at installation for all Filterra configurations. This DOES NOT apply to Full Grate Cover designs. * Plant(s) shall not have a mature height greater than 25-30 feet. * A7-15 gallon container size shall be used. * For precast Filterra HC systems, plant(s) should have a single trunk at installation, and pruning may be necessary at activation and maintenance for some of the faster growing species, or species known to produce basal sprouts Plant Installation * During transport protect the plant leaves from wind and excessive jostling. * Prior to removing the plani(s) from the container, ensure the soil moisture is sufficient to maintain the integrity of the root ball. If needed, pre-wet the container plant. * Cut away any roots which are growing out of the container drain holes. Plants with excessive root growth from the drain holes should be rejected. * Plant(s) should be carefully removed from the pot by gently pounding on the sides of the container with the fist to loosen root ball. Then carefully slide out. Do not lift plant(s) by trunk as this can break roots and cause soil to fall off. Extract the root ball in a horizontal position and support it to prevent it from breaking apart. Alternatively, the pot can be cut away to minimize root ball disturbance. * Remove any excess soil from above the root flare after removing plant(s) from container. * Excavate a hole with a diameter 4” greater than the root ball, gently place the plani(s). * If plant(s) have any circling roots from being pot bound, gently tease them loose without breaking

iner. * Excavate a hole with a diameter 4” greater than the root ball, gently place the plani(s). * If plant(s) have any circling roots from being pot bound, gently tease them loose without breaking them * If root ball has a root mat on the bottom, it should be shaved off with a knife just above the mat line. * Plant the tree/shrub/grass with the top of the root ball 1” above surrounding media to allow for settling. * All plants should have the main stem centered in the tree grate (where applicable) upon completion of installation. + With all trees/shrubs, remove dead, diseased, crossed/rubbing, sharply crotched branches or branches growing excessively long or in wrong direction compared to majority of branches. * To prevent transplant shock (especially if planting takes place in the hot season), it may be necessary to prune some of the foliage to compensate for reduced root uptake capacity. This is accomplished by pruning away some of the smaller secondary branches or a main scaffold branch if there are too many. Too much foliage relative to the root ball can dehydrate and damage the plant. * Plant staking may be required. www.ContechES.com/filterra | 800-338-1122 13