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M93040GE • • <br />2.0 SITE CHARACTERISTICS <br />Site characteristics include observed existing and pre- <br />existing site conditions that may influence the cut slope. <br />2.1 Site Location <br />The slope is located south of the staging area at the west <br />portal of the Cyprus Orchard Valley Mine near Paonia, Colorado. A <br />project vicinity map is shown on Figure 1. <br />2.2 Site Conditions <br />The slope is divided into about two (2) sections by a mid <br />slope bench. A surface drainage ditch is located on the mid slope <br />bench. The lower slope portion is a cut slope with an inclination <br />of about one half (1/2) to 1 (horizontal to vertical) and appears <br />for the most part to expose formational material. The upper <br />portion is a cut slope that is currently inclined at about 1.75 to <br />1. The upper portion of the slope has recently failed. <br />Observations of the slooe.indicate that the slope failure may have <br />been somewhat spontaneous and may still experience continued creep. <br />The toe of the failure had covered the bench surface drain ditch <br />with slide debris progressing down slope below the drainage ditch <br />to the staging area. <br />3.0 SLOPE STABILITY <br />The stability of any slope is dependent on many factors <br />typically the stability of a slope is analyzed by calculating the <br />2 <br />~l.ambert anD associates <br />CONSULTING GEOiEC HNIGL ENGINEERS eN0 <br />N SiE Ri4L iE$TING <br />