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2-29 <br />OFFICE COMPLEX <br />During 1989, three trailers were consolidated into an office complex. The <br />location of the offices is shown on Figure 2.2-2. The complex consists of change <br />trailers relocated from McClane and Munger mine benches and one additional trailer. <br />The trailers were placed upon concrete foundations and connected with a <br />hallway. A graveled parking area and sidewalks were also installed. The trees were <br />planted in the spring of 1989 and are cottonwood and junipers located as shown on the <br />landscape plan on Figure 2.2-2. The plan was developed with the assistance of the <br />BLM and may be expanded as necessary. <br />Three 1,250 gallon PVC tanks are buried to provide potable water storage. <br />Potable water is trucked to the mine. Aseptic sewage system (permitted through the <br />Garfield County Building Department) treats wastewater. <br />During January 2000, a gasoline tank was installed northeast of the office <br />• complex in the storage area. The 500 gallon stand mounted tank has a secondary <br />containment which will handle the entire contents of the tank. The location of the tank <br />is presented on Figure 2.2-2. <br />Prior to disturbance of the area, the area was cleared of brush and topsoil was <br />salvaged to a depth of up to 24 inches and placed upon the topsoil stockpile (see <br />Section 2.3 and Figure 4.4-1). The depression created by stripping the topsoil helps to <br />confine all surface water runoff from the area so that it may be routed through a <br />sediment fence (SAE-1). The office complex disturbance is about three fourths of an <br />acre. ~ The total area draining to the three sediment fences is about one and one-half <br />acre. Sediment fences serve as alternate sediment control measures in lieu of a <br />sediment pond. Additional information relative to the office complex is contained in <br />Sections 2.3 and 2.4; as well as Table 2.2-1 and Appendix M. <br />• <br />Mc Volume 1 06/04 <br />