2011-10-20_REVISION - M1981185 (10)

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Description of Man Made Structure: Engineering Evaluation: Certified By: DEN 97,636,865v1 10 -19 -11 Engineering Evaluation For Aaron Taylor Fence By Daniel Madruga, P.E. CLC Associates, Inc. Aaron Taylor owns a three- strand T -post wire fence which is located along the eastern edge of his property, and the western edge of the New Access Road at approximately Line Stations 23 +30 to 24 +00. The Taylor fence is located approximately four feet from the edge of the New Access Road. I present the following engineering evaluation to mitigate or avoid any potential damage to the Taylor fence. Wildcat Mining Corporation ( "Wildcat ") will construct a 4.5 foot tall, 3 foot wide, free- standing gabion wall approximately 200 feet in length and parallel to the New Access Road, located approximately between Line Stations 22 +00 and 24 +00, as shown on Exhibit D, Figure C4.13 and C4.94. The eastern face of the gabion wall will be constructed approximately one foot from the edge of the New Access Road and buried approximately 1.5 feet. In my professional opinion, construction of this gabion wall structure will prevent any substantial risk of damage to the Linden fence as a result of activities occurring at the Wildcat mining operation. According to the AASHTO Policy on Geometric Design of Highways and Streets the average height of a vehicle is 3.5 feet. The proposed wall is designed at 4.5 feet tall to provide slightly more height than the average vehicle due to the fact that larger than normal vehicles are likely to use the New Access Road. The gabion wall will provide adequate protection of the three - strand T -post fence primarily due to the weight of the wall. Per the design details shown on Exhibit D, Figure C4.94 each gabion cube will be three foot tall, three foot wide and three foot deep, or approximately one cubic foot. Each cubic foot will weigh approximately two tons. This will give the wall an approximate weight of 2,700 pounds per linear foot of wall. This weight will be further reinforced due to the interlocking nature of the gabion walls.