HYDROGEOLOGIC INVESTIGATION

Griggs-Lang provides an integrated approach to mine water management combining knowledge of geology, hydrology, hydrogeology and hydraulics with environmental and mining experience. Our experience enables us to provide cost effective, practical solutions for your project, including:

• Estimating dewatering requirements for surface mines.
• Predicting and evaluating the impact of mining on local and regional water resources;
• Use of baseline surface and groundwater data in exploration, evaluation and permitting projects;
• Baseline monitoring of borehole water levels with a fleet of Solinst y Levelogger pressure transducers;
• Slug testing to establish in-situ hydraulic conductivities;
• Packer testing to establish in-situ hydraulic conductivities;
• Stream gauging to determine flow rates and stage correlation;
• Water budget modeling (surface water and groundwater);
• Integrating mine planning with surface water and groundwater management to minimize the amount of water handled in the mine and minimizing pumping costs;
• SPDES Permit applications and sampling;
• Groundwater sampling;
• Preparation of Stormwater Pollution Prevention Plans;
• Geophysical characterization of boreholes for hydrogeologic assessment;
• Aquifer pump test design;
• Production well and observation well siting;
• Tracer studies.

Recent projects have included:

• Hydrologic investigation and assessment for the purpose of long-term mine planning and excavation sequencing at a major crushed stone and cement stone mine in upstate New York.
• Hydrogeologic investigations for the planned expansions of major crushed stone aggregate mines in New York State.
• Investigation of alternative secondary water supplies for a municipality.