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<br />,.....,.., <br /> <br />.' <br />, <br /> <br />J. Building a pump station helo.. the slide area. The pump <br />station would have to be sized to lift roughly 80 ds <br />from the river to the canal. The vertical lift would be <br />approximately 40 feet. <br /> <br />4. <br /> <br />Cutting <br />unstable <br />or place <br /> <br />back the slope of the slide and <br />material and either rebuild the canal <br />pipe through the troublesome reach. <br /> <br />adjacent <br />(unlined) <br /> <br />The Stewart Ditch and Irrigation Company Board has decided to <br /> <br />proceed on a variation of the 04 alternative to get Some water <br /> <br />'diverted this fall to the irrigated areas (in particular the <br /> <br />orchards). A significant amount of material from the existing slide <br /> <br />area (reportedly over 200,000 c.y.) has been carefully removed and <br /> <br />placed nearby. <br /> <br />The slope in the slide area has been cut back to a slope that is <br /> <br />approximately 1.7 horizontal to 1 vertical (1.7: 1). Drainage inter- <br /> <br />ception ditches have been cut around the crown of the slide. The <br /> <br />ditch has been or is in the state of being reconstructed to carry <br /> <br />emergency flow this fall to the service area. <br /> <br />The on-going construction has been discussed. with the' ASCS or <br /> <br />soil conservation personnel. <br /> <br />Little specific site geotechnical data <br /> <br />has been developed at this time and unfortunately the emergency slope <br /> <br />excavation has obliterated most surface evidence on the slope failure <br /> <br />mechanism. <br /> <br />A geological reconnaissance study of the landslide has been per- <br /> <br />formed by Bruce Stover of the Colorado Geological Survey. (Ref. J) <br /> <br />I-J <br />