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Parkdale Project ~ 5 • Reclamation Permit <br />The following discussion is based on this site-specific analysis. Map I depicts the <br />boundaries of the salvage units discussed below. Laboratory data sheets depicting results <br />of the analysis of samples are included at the end of this exhibit. <br />2.1 Map Unit A -Facilities Site <br />Map Unit A is a convex valley/fan complex influenced by alluvial and colluvial action. <br />The lower, eroded toe slopes of Map Unit C are included in this unit due to salvage <br />considerations. Approximately 90 percent of this unit, where disturbance is proposed to <br />occur, consists of the soil represented by sample S-2. This soil is approximately 40 <br />inches deep to a hard layer impenetrable by a hand auger. The surface 18 inches of this <br />soil has a very gravelly sandy clay loam texture and a pH of 8.2. The electrical <br />conductivity of this sample is 0.4 mmhosJcm. Coarse fragment content of the soil to this <br />depth is estimated to be 50 percent. Five percent of the area potentially to be disturbed <br />consists of the soil represented by sample S-1 which occurs immediately adjacent to <br />Tallahassee Creek. This soil is 60 inches deep and typically has a loamy sand to sandy <br />loam texture, a pH of 8.2, and an electrical conductivity of 8.0 mmhos/cm in the upper <br />18 inches of the soil profile. There is less than 5 percent coarse fragments throughout the <br />profile. The remaining 5 percent of this unit consists of drainages and rock outcrops <br />located along the foothill toe slopes. <br />These soils are suitable for salvage to a depth of 18+ inches over 95 percent of the unit. <br />The remaining 5 percent of the unit is not overlain with salvageable soils. Due to its <br />proximity to the banks of Tallahassee Creek, the soil represented by sample point S-1 <br />would not be disturbed to any great degree. If salvaged, this soil would be sufficiently <br />diluted to eliminate the negative effects of the higher electrical conductivity value. <br />2.2 Map Unit B • Sandstone Quarry <br />An existing abandoned sandstone quarry and associated undisturbed rocky soils on <br />convex, moderately steep sideslopes make up this unit. Of the area proposed to be <br />disturbed, approximately 66 percent consists of rock outcrops, surface rock exposures, <br />and soils less than 6 inches deep to bedrock. Shallow soils to a depth of 9 inches to <br />bedrock (sample S-3) occur over the remaining 33 percent of the area proposed to be <br />disturbed. This shallow soil typically has a gravelly sandy clay texture, a pH of 8.1, an <br />electrical conductivity of 0.4 mmhos/cm, and exhibits approximately 35 percent coarse <br />fragments throughout the profile. <br />Though suitable to marginally suitable for salvage (in terms of chemical and physical <br />characteristics) to a depth of approximately 9 inches, salvage of this soil over the portion <br />of the disturbed area where it occurs will be difficult. Salvageable depths occur in a <br />mosaic with rock outcrops, surface rock exposures, tree stands, and very shallow soils <br />making salvage operations potentially problematic, especially in terms of stockpiling. <br />Given the proximity of the pit highwall and sandstone outcrop surfaces, safety is also of <br />concern. Salvage of this soil should be considered opportunistic with the volume <br />available for stockpile and reapplication uncertain. <br />