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• <br />• <br />C~ <br />J <br />Alluvia! Vallry Floor /m•esiiR~ion <br />The remaining tributaries to Lorencito Canyon have very narrow expressions of weathering <br />deposits and relatively linear and non-sinuous stream channels. <br />;::: LUItEN~[T(1!EAI~EXUN:I~IE :.: :::. :.: <br />,.. <br />COMPARTSUN O~';T:riIMENSTQNS U~.'tTIYCONSUT.CDATED DEPQSITS :.::':; <br /> Reported Range in Depth of Range in Width of <br /> Unconsolidated Deposits Unconsolidated Deposits <br /> (feet)/ (No. of Locations) (feet) Area within Permit <br />Stream Area (acres) <br />i Purgatoire River North 8 -24 / (8) 1300 - 2000 312.1 <br />of the Perini[ Area <br />Lorencito Canyon 12 - 22 / (4) 400 - ]900 697.88 <br />Cow Canyon 10 - l3 / (2} 200 - 850 187. l8 <br />Alamosa Canyon l5 (I) 200 - 850 IOO.l4 <br />Chimney Canyon l4 (I) 75 - 420 45.18 <br />Li[tle Pine Canyon NA / (0) 120 - 450 37.84 <br />Puertecito Canyon 26 / (l) 150 -400 42.79 <br />Jeff Canyon ZS / (1) 175 - 350 31.77 <br />The drill logs note poorly-sorted to well-sorted deposits, with sub-round to equiangular gravels <br />and cobbles in sandy matrices for the alluvial wells found in Cow and Lorencito Canyons. <br />In conclusion, the deposits adjacent to the Purgatoire River, Lorencito Canyon and Alamosa <br />Canyon appear to be derived predominantly from fluvial action. This has resulted in deposits of <br />the widest lateral extent within the permit area with the most sinuous channels. Deposits within <br />Cow Canyon, and in the other tributaries to Lorencito Canyon appear to be a combination of <br />colluvial and alluvial materials. Bedrock control has influenced the locations of streamlaid deposits <br />as well as their geomotphological maturity. <br />Ground Water <br />Baseline monitoring locations of deposits adjacent to streams occurred in areas exhibiting thick <br />soil, colluvium or alluvial deposits. Areas where the canyon floor had exposed bedrock were <br />avoided. The wells located in the side canyons to Lorencito Canyon, were drilled near the mouth, <br />to ensure a maximum thickness of unconsolidated deposits. <br />Av(.475\December 13, 1996 5 <br />