Laserfiche WebLink
. - • <br />dredgin; ('`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 ~ feet 2000 tee[ 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 possible and as close to the river as practical. <br />The applicant will need to submit an additional hydrologic assessment ifchanges [o [he dewa[er plan are necessary. <br />Based on the analysis prepared by Leonard Rice Consulting Water Engineers, lnc., impacts to the surrounding well <br />owners will be minimized. <br />~. "We think the size of [he 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 [o 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 9,2001) <br />Response- Platte Sand & Gravel does not propose a concrete recycling plan[ under [his 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 />[ha[ enough bond exists to reclaim the site according to [he 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 />