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' SECTION 2 <br /> ' Tree System Overview <br /> This section provides an overview of the phytoremediation system.Trees were planted in <br /> six sub areas: Areas A,Addition to Area A, AA,B,C and D.The phytoremediation system <br /> ' was installed in two phases:the first occurring in January/February 2005,and the second in <br /> April/May 2006.Work was performed in accordance with the Phytoremediation Cleanup <br /> Plan (CH2M HILL,2004). Tree and irrigation system installation were documented in <br /> ' two as-built reports that were submitted to the RWQCB (CH2M HILL 2005; CH2M HILL <br /> 2007).Tree Monitoring results for Years 1 and 2 were reported in the Year 1 and Year 2 <br /> Phytoremediation Tree Monitoring Reports for the Source Area at the SFPP, L.P. Holt Release Site, <br /> 1 Holt, California (CH2M HILL 2008a,2008b). <br /> 2.1 Size and Location of Phytoremediation Areas <br /> The phytoremediation area, as constructed,is shown in Figure 14. The phytoremediation <br /> ' area is subdivided into six sub areas: Areas A,Addition to Area A, AA,B,C, and D.The <br /> criteria used to develop these areas included maximizing plant coverage within the affected <br /> area to the northwest of Whiskey Slough Road while maintaining vehicle access to the roads <br /> ' along the current and former SFPP pipeline alignments. <br /> Table 2-1 lists the approximate size of each phytoremediation area. <br /> ' TABLE 2.1 <br /> Approximate Sizes of Ph toremedialion Areas <br /> Planting Area Approximate Size(acres) Included in Cleanup Plan <br /> ' Area A 0.13 Yes <br /> Addition to Area A 0.19 No—Area added during implementation <br /> ' Area AA 0.01 Yes <br /> Area B 0.08 Yes <br /> ' Area C 0.07 Yes <br /> Area D 0.28 Yes <br /> ' Approximate Total Acreage 0.76 <br /> Note: <br /> Cleanup Plan refers to the following reference—Cleanup Plan Using Phytoremediation for the Source Area at <br /> ' the SFPP, L.P. Holt Release Site, Holt, California (CH21VI HILL, 2004). <br /> ' 2.2 Tree and Irrigation System Installation <br /> During Construction Season 1 (January/February 2005),a total of 173 trees were planted <br /> ' within Areas A, AA,B, and the Addition to Area A. An additional 65 trees were installed in <br /> SAC11667491PANAGON(YEAR3_2009_HOLTTREE_MONITORING_REPORT.DOCI 2-1 <br />