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M-1978-349 (Dick Casey Concrete Pit) <br />2009 Technical Revision <br />March 31, 2009 <br />Page 2 <br />Exhibit B - Index Map <br />Exhibit B is not required as a part of this technical revision, as the site has not <br />changed vicinity or location. However, a new map using updated U.S.G.S base <br />map information is provided for convenience. See the enclosed attachment. <br />Exhibit C - Maps <br />In the original 112c Reclamation Permit, Exhibit C consisted of one map titled the <br />Pre-Mining/Mining Map. For clarification, this Technical Revision consists of an <br />Exhibit C-1: Existing Conditions Map and an Exhibit C-2: Mining Plan Map. <br />Exhibit C-1: Existing Conditions Map <br />Most existing conditions remain the same as the original permit, noting that <br />extensive gravel recovery has occurred on surrounding parcels since 1979. <br />Per Rule 6.4.3, all adjoining surface owners of record, man-made and natural <br />structures within 200 feet of affected area, existing topography, existing <br />vegetation, and existing soils information are updated as part of this Exhibit. <br />Exhibit C-2: Mining Plan Map <br />The Mining Plan Map has been revised for efficient recovery of construction <br />materials. The document has been updated to reflect the consolidation of <br />multiple mining cells into one cell. This change includes the elimination of <br />certain phase and cell boundaries, creating one comprehensive active mining <br />phase. Typical side slopes, berm cross-section details, and mining notes <br />have been added. A 50-foot excavation setback is provided along boundaries <br />with non-mining uses, while common boundaries with all permitted gravel <br />resources (all under control of the Applicant) are mined to the property lines <br />internal to the overall gravel resources; soil conditions and prior experience <br />indicate that this configuration will safely maximize sand and gravel recovery. <br />Stockpiles and other operational features are also updated on revised Exhibit <br />C-2 to accurately reflect current and future operations. <br />2