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The pond has an average area of 0.92 acres, therefore an average depth of 5.1 feet is needed so that the <br />volume will be entirely stored in the sediment pond. The entire pond will be incised, therefore, 2H:1 V <br />sideslopes will be used. This is more than adequate to contain the 100 year event. <br />4. Mine Facilities and O eration <br />The site will consist of a portable crushing and screening plant, portable stacker conveyors, portable <br />asphalt plant, portable concrete plant, truck scale, potential portable office trailer and gen-set porta- <br />ble light fixtures in case some urgent work is needed at night. No night operations are scheduled for <br />the operation. All structures on site are shown on Map C-2. There will be no fuel storage tanks or <br />fuel farm on the site other than the tanks that are part of each of the three portable plants for generat- <br />ing power: <br />- 10,000 gallon diesel tank that is part of the croshing/screening plant. <br />- 6,000 gallon diesel tank which is part of the concrete plant <br />I - 6,000 gallon diesel tank which is part of the asphalt plant. <br />All of the tanks above are attached to their respective plants and are double walled for spill protec- <br />tion. For this reason, they have their own secondary containment and no berms are needed on any of <br />these tanks as normally required for the SPCC plans. The portable mining equipment such as load- <br />ers, dozers, trucks and excavators will be serviced on an as-needed basis from portable service truck <br />making short visits to the site. Upon reclamation, all portable equipment will be removed from the <br />site. <br />Power is available from poles at the western side of the permit area or power may also be supplied <br />from diesel generators using the tanks described above. <br />There will be no fence around the operation, since it is inside private property and protected by <br />berms and natural earth faces. No problems are expected with vandalism. It is extremely unlikely <br />that any toxic or acid-producing materials will be encountered during the mining operation since the <br />total depth of excavation in the River and the lake (see next section) is shallow and tests down to this <br />~J <br />Berry Pit 3/02 10 <br />