2010-02-16_REPORT - M1974004 (2)

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' intruded by several distinct igneous bodies and dikes that have been mapped up to 2 feet wide and can be fairly continuous over long distances. The gneisses are mapped as a series of folds, which are oriented roughly east-west and have been broken and displaced by faults believed to range in age from Precambrian to Tertiary. The two regional fault orientations that have been mapped within the property, trend approximately east-west and north-south (Figure 3). A notable geologic feature near the site is the Golden fault, which runs approximately north-south and forms the eastern margin of the north-northwest trending hogback immediately east of the quarry property. A mapped reverse fault trending roughly north- south is located within the quarry property and constitutes the boundary between the metamorphosed Precambrian bedrock (to the west) and the Pennsylvanian sedimentary rocks (to the east) (Smith, 1964; Scott, 1972). The quarry property straddles this boundary, with the majority of the processing plant and the entire asphalt plant located east of the fault (Figure 3). The bedrock material east of the fault is dominantly composed of upturned sandstones and shales of the Fountain Formation (Scott, 1972). West of this fault, the material is typically mapped as migmatitic, quartzo-felspathic gneiss with intrusions of granitic pegmatite veins (Scott, 1972). Within the main pit of the quarry two approximately east-west trending faults have been identified with one being shown on the map (Figure 3). The fault mapped in Jackson t Gulch has been informally named the Jackson Gulch fault is not shown on the map due to the difficulty to map the surficial trace. The area has been extensively modified and fresh exposures have been covered up by backfill material before measurements could be made. The unnamed fault that is exposed in the east and west walls of the main pit appears to range between 20 and 50 feet wide (Figure 3). Exposures of this fault were still visible in the northwest corner of the main pit along the margin of the recently ' excavated sump during previous field investigations (2008-2009), with an average dip of 84° measured (Photo 3, from 2009 report). This fault was also mapped by Gable as ' striking 260-270° and dipping 80-85° to the south, and will continue to be exposed across the main pit floor and on the east and north walls as the pit deepens (Figure 3). -3- in A Lachef & Associates SCHHA6f:I rNG;NEFRiN(: COMPANY