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would be placed between the scales and the main entrance to ensure that tracking of dirt onto Koster
<br /> Road is kept to a minimum.
<br /> 3.6.2 Mining Operations
<br /> Phasing
<br /> Mining would be divided into nine phases beginning with Phase I. While mining Phase I, the Phase IV
<br /> area would be temporarily bermed to create a silt pond using Phase I and Phase IV overburden. Once
<br /> mining is completed in Phase I, it would be used for permanent silt containment and the silt temporarily
<br /> contained in Phase IV would be pumped into the Phase I silt pond. Mining would continue to Phase II, III,
<br /> IV, and so on until all phases have been mined. Once mining is completed in the Phase IV area, the pit
<br /> would be used as a permanent silt pond along with the silt pond in the Phase I area. If additional silt
<br /> storage is needed during the course of mining, the Phase V area would be used as a silt pond. Phase IX
<br /> will be mined once the structures including the aggregate plant are demolished and removed. The
<br /> material excavated from Phase IX will be processed by a portable plant located on the capped settling
<br /> pond in the Phase IV area. Tables 3-1 and 3-2 describe the elements of the mine phases.
<br /> Top Soil and Overburden Removal
<br /> The total amount of top soil is approximately 800,000 cubic yards, an average of nine inches thick (i.e.,
<br /> 800,000 cubic yards over 659 acres). Topsoil would be stripped using scrapers and stockpiled in berms
<br /> for use in landscape areas and final reclamation. The largest amount of topsoil stockpiled at one time
<br /> would be approximately 50,000 cubic yards and will vary as new areas are opened up and others
<br /> reclaimed.
<br /> According to estimates included in Table 3-1, above, the total amount of overburden is approximately 6.6
<br /> million cubic yards. The overburden will be stripped by scrapers and stockpiled in berms, including the
<br /> landscape berms, prior to use in reclamation. The berms will be located along the perimeter setbacks.
<br /> TABLE 3-1
<br /> PROPOSED PROJECT FEATURES AND CHARACTERISTICS
<br /> Volume of
<br /> Volume of Volume of Material Maximum Depth
<br /> Mining Total Pit Volume Overburden Top Soil Extracted'(Cubic of Extraction
<br /> Operation Acres (Cubic Yards) (Cubic Yards) (Cubic Yards) Yards) (Feet)
<br /> Phase I 37.3 4,801,000 376,108 45,133 4,379,759 90
<br /> Phase II 84.8 11,882,000 855,067 102,608 10,924,325 92
<br /> Phase III 73.4 11,385,000 740,117 88,814 10,556,069 105
<br /> Phase IV 75.4 9,166,000 760,283 91,234 8,314,483 94
<br /> Phase V 83.1 15,869,000 837,925 100,551 14,930,524 116
<br /> Phase VI 111.5 20,796,000 1,124,292 134,915 19,536,793 105
<br /> Phase VII 77.6 11,120,000 782,467 93,896 10,243,637 105
<br /> Phase VIII 77.6 10,035,000 782,467 93,896 9,158,637 98
<br /> Phase IX 38 5,132,000 383,167 45,980 4,702,853 88
<br /> San Joaquin County QX-01-2\Lonestar California
<br /> Community Development Page 7
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