2014-03-21_REVISION - M1977361 - Laserfiche WebLink

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Permit Amendment — Cemex Sandstone Quarry in Appendix B -1 and were used to determine soil horizon depths, estimates for topsoil and subsoil salvage depths, and stockpile volumes. This existing NRCS information is considered sufficient to address all the requirements listed in DRMS Rule 6, Section 6.3.2. Therefore, no site specific soil surveys were conducted. B -4.1 Soil Classification and Descriptions The affected area is entirely within the Bailer Stony Sandy Loam soil series. These soils are formed from weathered sandstone and are very stony, shallow and well- drained. This soil series primarily supports upland dry grass and shrub vegetation communities. The Bailer series is in the loamy- skeletal, mixed, superactive, mesic Lithic Haplustolls taxonomic class. Lithic Haplustolls have a shallow mollic epipedon that extends down to the lithic contact which occurs within 50 cm of the mineral soil surface. Thus, the topsoil or suitable growth media is general very shallow. Approximately 19 % of the property is in the Six Mile Stone Loam soil series, but all of this area is outside of the affected area. B -4.2 Soil Fertility While no laboratory analyses from the permit area have been conducted, an analysis for Cemex's Dowe Flats Quarry two miles to the northeast suggests a slightly alkaline topsoil material with low organic matter and deficiencies in phosphorus and nitrogen. This is the likely location for imported growth media at the time of reclamation. Soil pH, nutrient and organic matter deficiencies will be ameliorated by amending growth media materials with organic matter and fertilizer as necessary. B -4.3 Soil Handling Newly affected areas will be stripped of suitable growth media prior to mining and the growth media will be stockpiled and stabilized for use in reclamation as discussed in Exhibit D, Section E -7. The estimated salvage depth is only 0 -12 inches based on the NRCS survey and field reconnaissance. Soil salvage, placement, and storage activities will be conducted using a variety of mobile equipment. Soil salvage depths will be determined by horizon, organic matter content, coarse fragment content, and equipment accessibility. Due to the shallow depth of suitable A- horizon topsoil materials, some B- horizon and /or C- horizon materials may be salvaged and mixed with the topsoil to provide sufficient growth medium volumes. Estimated volumes for the potential soil salvage areas are provided in Table B -2. These salvage quantities will likely be insufficient for reclamation needs and additional growth media will need to be imported (see Exhibit E for details). The quantities shown in Table B -2 were used to calculate estimated reclamation costs as provided in Exhibit L: Reclamation Costs. Table B -2: Estimated Soil Salvage Quantities Soil Stripping Area Soil Code Soil Type Acres Sloe Adjusted Acres Soil De th in Soil Removal c A- Horizon C- Horizon A- Horizon C- Horizon West Side - Forested Ba Bailer 0.190 3.5 0.198 2 2 53 53 South Side Ba Bailer 0.112 7.5 1 0.113 4 4 61 61 East Side Ba Bailer 0.554 3 0.584 4 6 314 471 Stockpile 1 Ba Bailer 0.781 n/a 0.781 36 6 3782 630 Stockpile 2 Ba Bailer 0.113 n/a 0.113 60 6 912 91 Pit Floor - Temporary Reclamation Ba Bailer 1.366 n/a 1.366 12 0 2203 0 Surface Disturbance - ,Subsoil Only Ba Bailer 0.926 n/a 0.926 0 6 0 747 Total 4.042 4.081 7,324 2,053 Exhibit B B -3 March 2014