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2.0 Phytoremediation 1 2.1 Conceptual Site Design The four areas targeted for planting are shown on Figures 2 through 5.Up to several varieties of hybrid poplar and/or willow will be planted at the site. It is expected that willow trees will be planted in the stormwater pond area because of the frequency of 1 flooding in this area. Both row spacing and tree spacing is proposed to be 10 feet. In areas where exact site dimensions are not known,a conservative (generous) estimate was made for the trees required. Excess trees will be used to replace trees that have been lost in the existing grove. Irrigation will be provided by a dedicated water line buried at a depth of approximately 2 feet below grade. The poplar trees will be irrigated for a period of up to two growing ' seasons by the irrigation system.The design for each area is described in more detail below. 2.1.1 Test Grove 1 A conceptual design for tree planting at Test Grove 1 is shown on Figure 2. The area north of the existing grove will be planted with a row and tree spacing of 10 feet. A truck ' turnaround area is located in the northernmost portion of this new grove of trees.The resulting area will yield approximately 13 rows of variable length with and an estimated capacity of 213 new trees. 1 2.1.2 Stormwater Pond Figure 3 shows the conceptual design for the stormwater area. This area is subject to seasonal ponding and may be better suited for willow trees that poplars.This possibility will be fully evaluated prior to ordering new trees.This area has one row of approximately 29 trees along the southern edge.This area is approximately 300 feet wide and 210 feet long (north south),yielding a capacity for 18 new rows with approximately 29 trees per row. Estimated capacity is approximately 522 new trees. One of two new piezometers is proposed to be installed south of the stormwater pond area (shown on Figure 3). ' 2.1.3 Former Bagging Plant Area Figure 4 shows the conceptual design for the Former Bagging Plant area.This area includes the former bagging plant,a loading dock,and two smaller structures. It is anticipated that the loading dock and one of the two smaller structures will be removed;however,the foun- dation for the former bagging plant and one smaller structure will remain. The resulting area will hold 30 rows of variable length and has a capacity for approximately 710 trees. One 1 of the two new piezometers to be installed is south of the bagging plant area along Hazelton Avenue. RDD/003670317.DOC(CAH710.DOC) 4