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— w -- r � n mi w m a mean depth of 53 inches. These deposits have stabilized and <br />formed cambic horizons and in some places weak argillic horizons. Additionally, they have <br />developed secondary accumulations of carbonates. The accumulation of carbonates is reflected <br />in a higher pH in the Bk and Btk horizons. The pH in A, Ap, ABt, Bw and Bt horizons (Lift A) <br />averages 7.7 and in the Bk Btk and C horizons (Lift B) averages 9.2. Soil in this map unit is used <br />I • <br />Primarily for irrigated pasture and hay crop. Barx soil is the second component (30 percent) in this <br />map unit.' Barx/Darvey is a prime farmland soil in San Miguel County, Colorado if the soil is irrigated <br />6(s LA- an adequate and dependable water supply. Attachment 2. .04.9 -6 is a letter from the Montrose <br />County NRCS stating that Barx/Darvey soil in the survey area does not have an adequate or <br />S 7 <br />r+� dependable water supply for irrigation. Barx/Darvey soil was therefore not considered prime <br />�1 / farmland soil In the survey area during mining until a revised assessment was made by the NRCS <br />in February 2008 &fV 6hment 2.04-9-1 6) As�pf February 15i 2008. -the entirepfield south of BB <br />199ad and west of 2700 Road containing this unit is considered prime farmland since it is more than <br />inland soil type. and is being handled as such by the Western Fuels - Colorado LL( V. <br />' This property is entirely owned by Morgan. �1,s c r` m y � ) o y �� <br />VAS I Nc� � $1J �4tt�l hs l� ^4ter %fftn1 I <br />Map unit 98F occurs in natural drainage areas that eventuallyform shallow valleys on the mesa and <br />on the floodplain of Tuttle Creek. Depth to bedrock varies widely in this map unit. Haplargids with <br />varying depths to bedrock forth on drainage side slopes. Endoaquepts are formed where irrigation <br />water has accumulated in drainage bottoms. In a few naturally occurring areas of water <br />accumulation Endoaquolls have formed. <br />Eolian sands are intermixed with Cretaceous Dakota and Burro Canyon Formations in map unit <br />98G. Soil is generally moderately deep with significant inclusions of shallow soil on convex slopes. <br />Soil salvage in this map unit may yield slightly less than predicted. <br />Map unit 98H occurs on mesa side slopes that are not as steep as those found in map unit 98B. <br />Hardness of bedrock varies depending on the underlying strata. Wahweap soil has the same <br />physical and chemical properties as those soils similarly named in the survey area. Wahweap is <br />outside the range of characteristics compared to the survey area, in that it occurs in an area of 7 <br />inches mean annual precipitation. <br />(Revised dune 20oa) 2.04.9 -19 <br />