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<br /> <br />• INTRODUCTION <br />Savage and Savage, Inc. was contacted by B&B Excavating and Greg L.ewicki and <br />Associates to evaluate and delineate an area thought to contain jurisdictional wetlands <br />prior to development of a final mining and reclamation plan for gravel extraction in the <br />area. The study area was surveyed for jurisdictional wetlands and evaluated for <br />presence and significance of any riparian vegetation communities on September 9, <br />1996. The study azea (which is equivalent to the proposed permit areal contains <br />approximately 34 acres in aerial extent, bounded on the south by the Southern Pacific <br />Railroad and U.S. Highway 6, the north by the Eagle River, the east by the property <br />boundary, and the west by Spring Creek. The study area lies within Eagle County, <br />Colorado, and is more specifically identified as a part of tracts 62 and 42, Sec. 4, TSS, <br />R85W of the 6th prime meridian. <br />SITE DESCRIPTION <br />The study azea is known as the Carol Ann Pit site, and is dominated by a large open <br />field. The general geomorphology of the site indicates that the site is a terrace of <br />alluvial origins. This terrace is approximately 60 feet in elevation above the current <br />level of the Eagle River. The topography of the sight slopes from south to north with a <br />30 foot terrace outslope along the north side of the study area. This slope divides the <br />upper terrace of the study area from a lower alluvial terrace. <br />• Two historic drainages traverse the study azea; Spring Creek on the western boundary <br />of the study area, and an unnamed drainage in the center of the study area. Both <br />drainages have origins to the south of the study azea, however, with railroad, highway, <br />and airport construction to the south of the study area, the drainages within the study <br />area appear to be isolated from their headwaters. The water source for Spring Creek <br />appears to be surface runoff from adjacent irrigated agricultural lands and the pasture <br />of the study area. Spring Creek was dry during the field investigation, and there was <br />no evidence of recent flow. There is no low water channel in Spring Creek, and the <br />historic channel was completely vegetated. <br />The unnamed drainage traversing the center of the study area originates south of the <br />study area and enters the study area under the Southern Pacific Railroad tracks. The <br />historic drainage deepens as it passes through the study area from southeast to <br />northwest, and a short secondary tributary joins the drainage midway through the study <br />azea. The unnamed drainage has been channelized for approximately 100 feet at the <br />northwest comer of the study azea, and drainage has been directed away from the <br />historic channel to an irrigation ditch below the terrace outslope. This irrigation ditch <br />flows from west to east approximately 25 feet north of the terrace slope tce to a marshy <br />area north of the study azea on the lower terrace. There was no surface water flowing <br />in the unnamed drainage at the south end of the study area. Approximately 200 feet <br />• north of the center of the study area subsurface flow enters the channel from springs. <br />Surface water continues to flow the length of the unnamed drainage through the study <br />-I- <br />