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Revision <br />February 1982 <br />Topsoil Analyses <br />Physical and chemical properties of soils in the Paonia area of <br />Colorado reported by the Soil Conservation Service (SCS) are presented in <br />Appendix XVI.1. Data are reported for all soil mapping units except for <br />the 75 Torriorthents-Rock outcrop, sandstone, complex and the disturbed 74 <br />Torriorthents-Haplargids complex, very stony. <br />Appendix XVI.5 presents the methods of sample collection and the <br />results of physical and chemical analyses with reference completed to eval- <br />uate the quality of the single existing topsoil stockpile and three sites <br />in the borrow pit area of Paonia Reservoir. Reservoir sampling sites are <br />shown on a map in Appendix XVI.5. <br />Topsoil Suitability and Productivity <br />The suitability of topsoil materials for the disturbance areas are <br />presented in Table 2.04.9.A. The SCS estimates that herbaceous produc- <br />tivity will improve from a current yield of 450 lbs. dry/acre due to <br />disturbance in the area) to approximately 2000 lbs. dry/acre after recla- <br />mation (A1 Spika SCS, personal communication 10 June 1981). Pre- <br />disturbance yields were estimated by the SCS to be 1500 to 3000 lbs <br />dry/acre (see Appendix XVI-3). <br />Additional topsoil to augment existing topsoil will probably be taken <br />from the Paonia Reservoir borrow Pit (permit in Appendix X). However, it <br />is difficult at this point to commit a specific site which will still be <br />available 30 to 60 years from now when reclamation begins. <br />2.04-40A~ <br />