Mining and Hydrogeological Investigations

Baseline Hydrogeological Characterization, Groundwater Monitoring Plans and Predictive Groundwater Fate and Transport Modelling, Northern Ontario Mine Sites Geocentric’s Hydrogeologist were retained to lead and prepare Hydrogeological Investigation, Groundwater Monitoring Plan compliant with O.Reg 240/00; complete predictive modeling, preparation of a conceptual site models, groundwater quality and surface water quality evaluations and development of a 3-D numerical model to evaluate the hydrogeological conditions predications as part of the regulatory submissions.

Principal Hydrogeologist for the Hydrogeological Investigation, groundwater monitoring plan and predictive modeling, preparation of a conceptual site model, groundwater quality and surface water quality evaluation and development of a 3-D numerical model to evaluate the hydrogeological conditions predications as part of the regulatory submissions, Clean Air Metals, Thunder Bay, Ontario.

Permitting and Groundwater Baseline Evaluation, Environmental Impact Statement, Denison Uranium mine Geocentric was retained as a Principal Hydrogeologist for pre-mining Permitting and Groundwater Baseline Evaluation, Environmental Impact Statement, aquifer testing, geochemical characterization, data gap analysis and preparation of conceptual model in support of an insitu mining extraction and freeze wall for uranium mining, northern Saskatchewan, Denison Wheeler Property. The work included the detailed review of the geological and hydrogeological framework of the Athabasca Sands and the development of a Conceptual Site Model and ultimately to a numerical model. The work also included a review of the regional hydrogeological numerical models and hydrology setting to understand possible mine water migration and mixing with regional aquifers.

Exploration, pre mining groundwater reserve and feasibility study, aquifer testing, geochemical characterization, data gap analysis and preparation of Numerical Model, South Gobi, Mongolia. The work included the preparation and execution of a field program, waste rock, host rock and background sampling, water sampling and infield screening techniques. The work also included the development of a 3-D hydrogeological model to understand possible mine water migration and mixing with regional aquifers.

Site Assessment, Risk Management and Remedial Action Planning-former Bullmoose and Ruth Gold Mine, Yellowknife, NWT. Mine sites were fully operable underground gold mines, impacted with tailings (submerged); waste rock, drainage portals, opening shafts, landfills and debris areas. The project included directing a comprehensive historical review, and tenure, data base searches and interviews, obtaining scientific permits, wild life monitoring, development and execution of a detailed sampling plans. A rehabilitation options analysis was prepared to address the leaching of metals from numerous large-scale waste rock piles, and the drainage of metals from an active portal to receiving waters. Geotechnical issues were also addressed and included dealing with tailings dams, subaqueous tailings, waste rock, mine vents and other mine workings. A risk assessment was completed on metals (tailings) in the environment and food-chain modeling and the development of site specific target concentrations.

Water Supply Investigation. South Gobi Desert, Mongolia. Work included development of a detailed alternative Conceptual Site Model based on the available data and information on geological hydrogeological characteristics of the local aquifer(s), water quantity/ capacity of aquifer, 3-D numerical modelling using FEFLOW and the long-term sustainability of the deeper aquifer resource.

Development of a Groundwater Management Strategy for the City of Barrie, Ontario. Work included the development of detailed site conceptual models, groundwater mapping tools including aquifer and aquitard profiles, groundwater recharge, discharge areas and vulnerable areas. A Risk Based Management Strategy was designed to ensure the long-term protection of the multi-aquifer system.

Source Water Protection Studies, Eastern Canada. Geocentric was the senior technical advisor on the Drinking Water Vulnerability Assessment and Source Water Protection at several Federal facilities. The work included a technical review of the conceptual site models and well head protection areas, 3-D numerical models, water balance, WHPA delineation and vulnerability scoring, water quality assessment, chemical fate and transport, Hazard and Threat Identification and Inventory and WHPA Risk Rankings.

Expert Review of Mine Site Compliance for Operator, Chile. Geocentric was retained to review and assess the effectiveness of the conventional Mercury (Hg) remediation system and water balance at mine in Chile The purpose of the evaluation was to review the status of the conventional Mercury (Hg) groundwater remediation system to evaluate the effectiveness of the system, potential gaps or project risks associated with the current system and an evaluation of the general hydrogeological site conditions and interpretations completed to date.  The work included the development of new Conceptual Site Models, and a final report with the interpretations, data gap summaries and recommendations for short term to long term to advance site permitting and site closure documentation to the regulators.  Presentations were made to senior Corporate experts to advance current strategies.