Norwest: Water Control and Management


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Water Control and Management Overview Surface and Groundwater Hydrology Water Control and Management Water Permitting and Complicance Environmental Assessment	Home > Our Services > Water Resources > Water Control and Management Planning Ahead For a Successful Operation Norwest has supported several clients in developing site-wide water management plans that minimize operational delays associated with a surplus of water or compromised water quality. Norwest also designs and supervises construction of stream diversions and stabilized stream channels. Design procedures involve the application of geomorphic regime theory and the use of various surface water hydrology and erosion and sediment transport computer simulation programs. Hydrogeologic modeling provides projections on the effects of an operation on water supply, water quality and water use. Norwest’s services include: Water Management Plans Design of dispersed water management plans and coordination with stakeholders Development of water management plans for land management agencies Permitting of storage, land application disposal, discharge, treatment and underground injection options Permitting and water quality data management Extensive mapping support using ArcView and AutoCAD MS4 and construction permit compliance Hydraulics Water Discharge Siting Evaluation Muskeg Drainage Stream Diversions Water Balance Evaluations Hydrogeologic Modeling Natural Attenuation Modeling Solute Transport Modeling Chemical Transport Regional Modeling of Groundwater Impacts from Coal Bed Methane Dewatering Models for Proposed and Existing Coal Mines Modeling of Mine Inflows and Impacts Water Rights Modeling	Case Study: Water Mgmt. Mine Water Management & Stability Control Situation: Norwest consulted with a mining company that had been experiencing two separate instances of localized instability within a mining area. The first area was characterized as a creep type dump failure caused by placing waste material on what proved to be a weak foundation layer. The second area was characterized as a block type wall failure, which occurred along a weak “aqua putty” layer within the coal seam. Norwest quickly engineered a creative modification to the mine plan to allow for continued mining within the pit. Solution: Norwest developed long-term remediation plans to mitigate the pit wall instability, which included detailed mining and water management plans and permit application submittals. The wall failure remediation plan required mining through two large sediment ponds located in series near the edge of the mine pit backfill, allowing for the pit wall angle to meet the stability requirements. After removing the weak aqua putty layer, a buttress of overburden material was placed to allow the replacement ponds to be reconstructed on a stable backfill surface. An interim water management plan allowed the ponds to be temporarily removed from service during the seasonal dry period. read more>>
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