Specifications include, but are not limited to: This project involves the treatment of the water in the existing pit and the backfilling of the pit in a manner to create positive drainage flow thru permanent treatment cells before being discharged. There is an estimated volume of 66,000,000 gals of water that needs to be treated. This water will be initially treated in the existing pit to raise the pH to acceptable levels and have the other elements settle out. Additional treatment will be conducted in the 2 treatment cells if necessary so the water meets effluent standards before being discharged. As the water drops in level, material from the borrow area will be used to fill the pit so it will not recharge and increase the depth of water. Backfilling of the pit will force the treated water from the existing pit thru the treatment cells. The estimated backfill material needed is 180,000 yards. After all the water has been treated to compliance standards and discharged, the existing treatment cells will be converted to permanent cells for continuous treatment.
