Laserfiche WebLink
<br />dredging ("wet mining")will begin from that point in time. Leonard Rice Consulting Water Engineers calculates <br />the maximum amount of water level decline to be around 5 feet 2000 feet from the starter pit site located above the <br />most permeable portion of the aquifer. To further minimize impacts, Platte Sand & Gravel will commit to mining <br />in each dewatering area in early summer so that aquifer dewatering is complete prior to the next irrigation season <br />and mining will be conducted in each lake area as far from the wells as possibleand as close to the river as practical. <br />The applicantwill need to submit an additional hydrologic assessment if changes to the dewater plan are necessary. <br />Based on the analysis prepared by Leonard Rice Consulting Water Engineers, Inc., impacts to the surroundingwell <br />owners will be minimized. <br />24. "We think the size of the concrete recycling storage piles should be clearly specified by the applicant and <br />limited in the permit process. There are runoff concerns on any storage pile that should be addressed in the <br />permit. Impacts to the river via storm water runoff or potential contaminates due to any recycling operation <br />should be well investigated." <br />(Marty Block- XCEL ENERGY,' March 9,200/) <br />Response- Platte Sand & Gravel does not propose a concrete recycling plant under this operation. However, <br />the applicant has specified that "inert material" may be used to reclaim the pit slopes. The definition of "inert <br />material" includes concrete, which has been in a hardened state for at least 60 days. The Division only ensures <br />that enough bond exists to reclaim the site according to the plan. This would include any "inert material" <br />located on site used in the reclamation plan. The applicant is required to obtain a Storm Water Management <br />Plan ("SWMP") and an NPDES permit to dewater from the Colorado Department of Public Health and the <br />Environment. <br />9 <br />