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Minor low water crossings (bank cuts) are proposed within the project area in order to <br />allow passage of construction and drilling equipment across the ephemeral drainages. <br />Proposed locations of the low water crossings were selected based on four factors: 1) <br />where the natural condition of the drainage bank and bed would support the crossing <br />without the need for any fill; 2) where the bank cut to support the crossing would be <br />minimal; 3) where minimal soil disturbance would be required; and 4) where running <br />water is minimal or absent during moderate storm events. Each crossing would be <br />constructed to approximately 20 feet in width and to the site-specific vertical profile <br />necessary to avoid high-centering of the equipment. Upon the completion of the <br />exploration drilling, all bank cuts would be reconstructed to their original contour and <br />would be reclaimed according to standards of the BLM. <br />Disturbance Estimates <br />Short-term surface disturbance as a direct result of project related operations including <br />drill rig travel routes and drill site construction is estimate at approximately 1.4 acres. <br />Blading and grading of the travel routes and the proposed ten drill sites would only be <br />completed if necessary. <br />Surface disturbance from each travel route would typically consist of two, 3-foot wide <br />tracks (total disturbance of six feet per travel route) from the floatation tire-equipped, 10- <br />foot wide drilling rig. To account for the turning radius of the equipment and the minor <br />deviation from the previously created 6-foot wide tracks a total travel route width of 10- <br />feet has been assumed. A total of 5,202' of travel route across new and existing <br />disturbance is proposed with a total width of 10-feet for an estimated travel route <br />disturbance of 1.19 acres. Travel with the support truck and crew trucks for the <br />estimated four crew members would be minimized within the project area to further <br />reduce disturbance along the travel routes. A detailed breakdown of surface <br />disturbance for the project is given in Table 2 below. <br />Table 2 - Disturbance Breakdown <br />Feature T e Feature ID II Length Feet Area Feet Area Acres <br /> <br />Access 2track entry (needs <br />work 11 <br />2912 <br />29120 <br />0.668503214 <br /> <br />Access All access to all <br />holes <br />1 <br />2290 <br />22900 <br />0.525711662 <br />Pad VX-08-001 20'x40' and 10' X 10' it 900 0.020661157 <br />Pad VX-08-002 ? i 20'x40' and 10'X 10' it 900 0.020661157 <br />Pad VX-08-003 20'x40' and 10' X 10' it 900 0.020661157 <br />Pad VX-08-004 20'x40' and 10'X 10' it 900 0.020661157 <br />Pad VX-08-005 20'x40' and 10'X 10' it 900 0.020661157 <br />Pad VX-08-006 20'x40' and 10'X 10' it 900 0.020661157 <br />Pad VX-08-007 I ? 20'x40' and 10'X 10' it 900 0.020661157 <br />Pad VX-08-008 20'x40' and 10'X 10' it 900 0.020661157 <br />Pad VX-08-009 20'x40' and 10'X 10' it 900 0.020661157 <br />Pad VX-08-010 20'x40' and 10'X 10' it 900 0.020661157 <br /> <br />5202 Total Approx <br />Acrea e . --> <br />1.400826446