Draft 401 Certification - Glendale Construction Gravel Extraction Project
Accepting Comments from January 16, 2018 to February 6, 2018
This action would authorize Gene Sluder to temporarily discharge 5,000 cubic yards per year of dredged materials associated with gravel mining, impacting 15.5 acres of the Big Wood River. Work consists of excavation of gravel from the channel from approximately July to October when water is seasonally diverted from the river. The applicant will maintain five existing ramps (constructed prior to the Clean Water Act) that provide access into the river bed. The majority of this material will be extracted by direct methods and will not create a fill. However, temporary stockpiles of less than 225 cubic yards will be constructed in the river bed and removed for processing at an upland facility within seven days of their construction. In addition, the amount of excavated material stockpiled in the channel at any time will be limited to 500 cubic yards. All excavated material shall be hauled to an upland stockpile area. In addition, the applicant proposes to regrade the river bed at the end of each year’s excavation to remove depressions that could entrap fish during low flow periods.
Based on its review of the joint application for permit, DEQ certifies that if the permittee complies with the terms and conditions imposed by the permit along with the conditions set forth in this water quality certification, then there is reasonable assurance the activity will comply with the applicable requirements of the Clean Water Act, the Idaho water quality standards, and other appropriate water quality requirements of state law. (ACOE Permit Application Number: NWW-2017-00182)