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Protecting your Reputation

Environmental Engineering and Hydrogeologic Support for Optimal Performance with Minimal Impact to Operations

The mining industry understands the benefits of sustainability — minimizing environmental impacts, maintaining regulatory compliance, achieving optimal performance, and engaging with local communities and other stakeholders.  Your reputation relies on it.

Hargis provides the expert environmental engineering and hydrogeologic support to maintain your high standards throughout the entire mining lifecycle.  We collaborate with you to plan and navigate each project through permitting, operations, closure, and reclamation lifecycles.


Environmental Investigation for Baseline Studies

Environmental investigations are vital in protecting your interests.  The environmental engineers and hydrogeologists of Hargis conduct comprehensive soil and groundwater assessments to characterize the baseline chemical quality of soil and groundwater to identify the presence of contaminants.  Data generated during this assessment is used to identify potential soil and groundwater impacts prior to development, and determine if future impacts are attributable to new mining operations or expansion of existing activities – potentially reducing environmental liability in the future.


Hydrogeologic Investigation and Mine Water Management

Water is a critical resource for mine operations.  Hydrogeologic assessments help mine operators understand potential water supplies available and how to convey that supply to where it’s needed.  Our staff of hydrogeologists and engineers are experienced in evaluating, developing, and engineering the delivery of these water supplies to meet your water demand.  Services include exploratory drilling and detailed lithologic analyses, aquifer testing, developing estimates of potential well yield, characterizing chemical quality, and engineering design for water conveyance.


Regulatory Compliance and Negotiations

The regulatory framework for mining operations is complex.  Hargis has extensive knowledge of these federal, state, and local environmental regulations including RCRA, CERCLA, and the State of Arizona Aquifer Protection Permit Program.  Our staff maintains close, long-term relationships with regulatory agencies and understands their requirements and expectations.  When necessary, you can rely on Hargis to negotiate in your best interest and identify best management practices or process changes for optimal performance and compliance.

Contaminants of Concern

Waste from abandoned and active mines varies depending on the type of mine, site conditions, operations, and compounds used during mining activities. You care about the responsible management of both hazardous and non-hazardous waste streams.  Hargis can help you characterize and plan for the proper management of mine waste including:

  • Metals
  • Mine drainage
  • Petroleum
  • Total dissolved solids
  • Volatile organic compounds
  • Waste rock


Range of Services

Hargis environmental consultants and engineers provide a full range of support services throughout the entire life cycle of a mine:

  • Environmental investigations including soil, soil gas, and groundwater characterization sampling
  • Environmental permitting and compliance
  • Mine water supply
  • Groundwater modeling
  • Financial assessments and management of environmental liabilities
  • Litigation support
  • Remediation engineering
  • Response and negotiation with regulatory agencies
  • Program management

Featured Project

Aquifer Protection Permit

Aquifer Protection Permit

BHP Copper Inc. (formerly Magma Copper Company) operates an open pit copper mining and concentrating operation in Pinto Creek, near Miami, Arizona. An assessment was conducted to characterize the hydrogeologic conditions in the area in support of an application for an Aquifer Protection Permit required by the Arizona Department of Environmental Quality (ADEQ).

Featured Blog

excavator at mine site

Mining Better Data at Lower Cost — Fully Grouted Piezometers Valuable for Groundwater Investigation at Mines

Water is a critical resource for mine operations. Hydrogeologic assessments help mine operators understand potential water supplies available and how to convey that supply to where it’s needed.