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• Baseline Technical <br />Report <br />ARCADIS <br />Report for Soils and <br />Biological Resources, <br />Cresson Mine Life Extension <br />Project Area <br />process of being updated. Eight soil units were identified within the District in <br />September 1999 (NRCS 1999). The new soil units and complexes identified include <br />the Ess-Bushvalley (EB), Seitz (Sz), and Ivywild-Catamount (SI). In addition, during the <br />update process, the NRCS also identified three sub-units within the Rogert soils: <br />Rogert with rock outcrops (RgR), Rogert very gravelly sandy loam (15 to 40 percent <br />slopes) (Rg), and Rogert very gravelly sandy loam, cool (10 to 40 percent slopes) (Re). <br />The revised NRCS soil unit names are used in this report where applicable for <br />identifying the soil types within the Study Area. <br />Information on NRCS soil units in the Study Area is available on the Web Soil Survey <br />website, developed by the NRCS to provide access to the most current soil data. A <br />review of the most current soils mapping (Version 2, January 24, 2006) in the Study <br />Area as of March 2008 verified that most of the soil units identified in 1999 remained <br />valid. The NRCS has revised soil units and descriptions since the reconnaissance soil <br />• survey conducted by Greystone in 1999. Descriptions of the hydric soils (H), Ess- <br />Bushvalley very gravelly loams, and Grenadier-like Unnamed very gravelly loam <br />complex were revised. The following paragraphs describe revisions to soil units within <br />the Study Area, which are also included on Figure 2-1 and Table 2-1. <br />The 1997 JBR survey identified and mapped hydric soils in the Study Area. A review of <br />the most current NRCS soil unit maps indicates that the hydric soils as mapped by the <br />JBR survey, which is a generic term, correspond closely to soil unit CQ (Adderton- <br />Cryaquolls). These soils are found in moist areas on stream terraces and toe slopes <br />covered predominantly by the natural grassland vegetation community type. The <br />parent material is derived from alluvium. <br />The NRCS database Web Soil Survey does not include the unit Ess Bushvalley (EB). <br />The NRCS EB soil unit designation refers to Quander-Bushpark very gravelly loams. <br />The soil units on Figure 2-1 were not revised to reflect the NRCS EB mapping of <br />Quander-Bushpark very gravelly loams, as the mapped extent of the NRCS EB soil <br />unit does not correlate with the JBR mapped EB soil unit. The JBR survey has a <br />greater level of detail for the extent of soil units within the Study Area. <br />As previously stated, the description of the soil resources in the Study Area that follows <br />is based on a reconnaissance soil survey conducted by Greystone in 1999; a follow-up <br />site reconnaissance by ARCADIS in 2007; and the review of the Teller-Park Soil <br />Survey on the NRCS Web Soil Survey site. The previous soil mapping was updated as <br />• appropriate using the new NRCS soil units and field survey data collected by <br />ARCADIS. The revised soils map is shown in Figure 2-1. Characteristics of the soil <br />CCV Final Technical Report (3-28-08).doc 4