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11. No fuel will be stored on public lands. <br />12. The BLM will be notified within 24 hours of any spills within the project area that occur <br />outside of containment, and will be provided with a written description of the spill <br />incident and response within seven days of the incident. <br />13. No burning of trimmed material or solid waste will be performed within the proposed <br />project area. <br />2.3.7 Water Quality, Surface and Ground <br />The proposed project area is located on the mesa top area of Grandview Ridge between Sale <br />Barn Canyon (to the northwest) and Wilson Gulch (to the south and east). There are no drainage <br />channels or arroyos located within the proposed project area. Ground water resources within the <br />proposed project area are generally associated with near surface (<100 feet depth) alluvial <br />aquifers. <br />There are no known ground water wells located within the proposed project area. The mine <br />offices and adjacent residential property use well water as their primary water source The well <br />used for water supply in the mine offices is located on private property 300 to 400 feet from the <br />Montoya property. The adjacent residential property at the bottom of the hill along the access <br />road also has its own water supply well. The mine offices use a septic system and the residences <br />are served by the municipal sewer system. <br />As required under Section 402 of the Clean Water Act (CWA), National Pollution Discharge <br />Elimination System (NPDES) regulations, the Proposed Action requires preparation of a Storm <br />Water Management Plan (SWMP). The SWMP is required to specify the location and function <br />of structural and operational best management practices (BMPs) during implementation of the <br />Proposed Action. BMPs are designed to minimize and/or eliminate sediment from reaching <br />adjacent project area waterways. The operator currently maintains a SWMP for existing <br />operations. Two settling ponds have been constructed to retain sediment that may be entrained <br />in runoff from the pit. <br />Implementation of the Proposed Action would not cause any increase in the current water usage <br />associated with the C and J mining operations. Note: water required for dust abatement and <br />mine operation activities in the current mining operation is purchased from the City of Durango. <br />If the Proposed Action is approved, C and J Gravel would continue to purchase water for these <br />activities from the City of Durango. <br />Environmental Consequences <br />Removal of vegetation, earth-moving and grading could accelerate erosion. The total area of <br />exposed sediment and potential runoff will increase. The settling pond may not be adequately <br />designed to accommodate increased runoff. <br />Impacts to ground water would be limited to potential impacts associated with any spills of fuels <br />or other hydrocarbons. Due to the lack of fueling and mine equipment maintenance within the <br />proposed project area, and the practice of immediately cleaning any areas of spills, this impact <br />would be low and long term. <br />Grandview Gravel Pit Expansion Environmental Assessment 26