PERMFILE66751

• Permit No: M1997054
• IBM Index Class Name: Permit File
• Section_Exhibit Name: EXHIBIT I - SOILS INFORMATION
• Media Type: D
• Archive: No

Parkdale Project ~ 6 • Reclamation Petmit
2.3 Map Unit C -Granite Quarry
This unit occurs on steep, concave-convex, foothill sideslopes. Approximately 75
percent of the unit consists of rock outcrops, surface rock exposures, incised drainages
between bedrock outcrops, and soils less than 6 inches deep to bedrock. Shallow soils
ranging from 6 to 12 inches deep to bedrock (sample S-4) occur over the remaining 25
percent of the area proposed to be disturbed. This shallow soil typically has a very
gravelly sandy clay texture, a pH of 8.2, and an electrical conductivity of 8.2 mmhos/cm.
Approximately 50 percent coarse fragments occur throughout the profile with coarse
fragment content decreasing as elevation increases.
This soil is marginally suitable for salvage to an average depth of 9 inches due to the
high coarse fragment content. Deeper salvage is restricted by the presence of bedrock.
As with the soil of Map Unit B, salvage of this soil will be difficult considering
operational and safety factors. The soil occurs in a mosaic pattern with rock outcrops,
surface rock exposures, tree stands, and very shallow soils. Both collection and transport
of soils to stockpile areas will likely be inefficient. Salvage operations may occur
opportunistically over this unit with the lower slope positions potentially supplying the
majority of the volume of soil available for salvage.
2.4 Map Unit D -Gravel Quarry and Facilities Site
Map Unit D soils (sample S-5) overlie a nearly level, slightly convex gravel bar
bordering Tallahassee Creek. Coarse soils ranging from 6 to 12 + inches deep overly
approximately 60 percent of this unit. The remaining 40 percent of the unit consists of
coarse soils less than 6 inches deep to a cobble layer and acobble/rock deposit at the
surface. The dominant soil typically has very gravelly sandy clay loam texture, a pH of
7.0, and an electrical conductivity of 0.3 mmhos/cm to a depth of 12 inches.
Approximately 40 percent coarse fragments occur throughout the profile at the sample
point though soils with lower coarse fragment contents aze common.
On average, the soil overlying 60 percent of this unit in the area of disturbance is
salvageable to a depth of approximately 9 inches. Deeper salvage is restricted by a high
coarse fragment layer. The portion of the unit which is salvageable occurs in the
southern portion of the area to be disturbed. It can be visually identified as the area
having fewer surficial cobbles and stones and a lower percentage of cactus present.
Conversely, the area proposed to be disturbed which is not overlain with salvageable
soils lies along the northern edge of this unit and is overlain with a higher percentage of
cobbles and rocks and supports a comparatively vigorous cactus population.