Nevada Gold Mines LLC – Goldstrike Mine

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SERVICES

Compliance. Supporting process and regulatory compliance scenarios throughout the project

Permitting. Assisting with various permits and revisions as mining projects enter new phases

Emissions Inventory. Developing multiple emissions inventories across various processes, operations, and phases

Monitoring. Leveraging historic experience in installing, auditing, and operating monitoring stations for the Goldstrike Mine.

Modeling. Ensuring defensible and operationally accommodating emission limits and compliance procedures through modeling expertise

  LEARN MORE ABOUT PERMITTING AND MODELING SERVICES

Permitting & Modeling – We work closely with our clients to maximize operational flexibility while ensuring compliance with applicable regulations.

Project Overview

Air Sciences has provided comprehensive air quality consulting services to the Goldstrike Mine for over 25 years.

These services have included dispersion modeling (ISCST3; AERMOD), continual re-permitting for changes and expansion, air impact analyses, permit strategy development, regulatory analysis, and operating an ambient monitoring station.

In addition, Air Sciences, in conjunction with Barrick (the operator of Nevada Gold Mines LLC), has worked with the Nevada Mining Association to affect state and federal rule changes specific to the mining industry, including mercury regulation.

OTHER Nevada Gold Mines LLC PROJECTS

More recently, Air Sciences has provided air quality consulting services to the Cortez, Arturo, Turquoise Ridge, and Goldrush gold mines, including providing support on the Cortez and Goldrush Environmental Impact Statement (EIS) analyses. Following the 2019 joint venture between Barrick and Newmont Corporation combining their gold mining assets throughout Nevada under Nevada Gold Mines LLC, Air Sciences has begun providing air quality consulting services to the Gold Quarry, North Area, and Twin Creeks operations.

Additionally, an Environmental Management Plan for air quality was developed for the Barrick-owned Pueblo Viejo Dominicana Corporation. This included siting and basic support of an existing air quality station at a power plant site. In addition to a modeling analysis, a regulatory analysis was performed to fulfill International Finance Corporation guidelines, DC standards, and EIS commitments.

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Featured Projects

Solvay Chemicals, Inc.

air quality permitting dispersion modeling

PERMITTING ACTIVITIES

Assisted with the PSD permitting of a calciner fuel switch to coal. Assisted with the PSD permitting of the installation of a large gas-fired boiler and an associated production expansion at the facility.

Performed several source-specific Best Available Control Technologies (BACT) reviews.

Continued to update and refine the facilities emission inventory and source characterization.

MODELING ACTIVITIES

Routinely reviewed and processed onsite meteorological data for use in the dispersion models.

Conducted near-field dispersion modeling analyses for criteria pollutants and hazardous air pollutants.

For one PSD application, conducted a Class I PSD and Air Quality Related Values analysis using the CALPUFF modeling system with MM5 meteorological data.

  LEARN MORE ABOUT PERMITTING AND MODELING SERVICES

Permitting & Modeling – We work closely with our clients to maximize operational flexibility while ensuring compliance with applicable regulations.

Project Overview

Since 2001, Air Sciences has provided air quality permitting and dispersion modeling services to Solvay Chemicals for their soda ash mining and production facility in southwest Wyoming.

The Solvay Chemicals Green River Wyoming mine is a major U.S. producer of soda ash from trona, a naturally-occurring mineral used in glass manufacturing.

Most recently, Air Sciences prepared a Prevention of Significant Deterioration (PSD) air permit application as part of a major modification, which included the installation of a large gas-fired boiler. This modification resulted in a large production increase at the facility. The PSD air permit application was prepared on a dual track with the Greenhouse Gas (GHG) control technology analysis processed by EPA Region 8 and the criteria pollutant Best Available Control Technology Analysis (BACT) and dispersion modeling (AERMOD) processed by the Wyoming Department of Environmental Quality. Air Sciences supported Solvay on all aspects of the project, including technical work, reports, communications, and agency negotiation.

Other Activities

Air Sciences has conducted several modeling analyses to demonstrate that the the facility has not exceeded its PM increment at the property boundary.

As permits have become more complex, Air Sciences has updated the emissions inventory to include cooling towers, haul trucks and train activities.

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Featured Projects

Xcel Energy

Air Monitoring Methods

Comanche Station

Air Sciences air quality consultants operated an ozone monitoring station in northern Pueblo, Colorado to support the Comanche Post Construction permit for Xcel Energy. Our team has worked closely with the Colorado Air Pollution Control Division (COAPCD) to develop electronic ozone alerts, to assure real-time access to the data via a web portal, and to develop methodologies that assure minimal data loss during ozone peaks and seasons.

Air Sciences also measured PM10 near the existing power plant to support re-permitting the facility for an increase in capacity.

All data are transferred via satellite internet, are available on Air Sciences’ data acquisition and support system (DASS), and are subsequently submitted to the agency.

St. Vrain Station

Air Sciences installed and operated an AERMOD monitoring station on a 60-meter tower and continuous PM10 and PM2.5 monitoring in northern Colorado for the Xcel Energy St. Vrain Station.

The station consisted of dispersion meteorological and particulate monitors, with digital data processing on-site and data downloading via satellite. Data were validated at all levels and processed according to EPA guidelines.

Air Sciences has historically performed station audits.

Project Overview

Air Sciences air quality consultants have provided pre- and post-construction ozone monitoring services for Xcel Energy since 2004 to support several facility efforts, including construction of integrated gasification combined cycle facilities, facility expansions, and natural gas conversions. Permitting support has been provided for key facility changes such as the expansion of the Comanche Unit 3 air permit.

The scope of work throughout the project has included the collection of meteorological data for wind profiles up to heights of 200 feet using open-lattice towers, as well as SOnic Detection And Ranging (SODAR) technology. Ambient air monitoring has been configured for ozone, NOX, PM10, and PM2.5.

Throughout Air Sciences history with Xcel, stringent data quality objectives were continually met allowing on-time completions for each monitoring project.

Air Sciences continues to be committed to fostering the ongoing relationships with Xcel Energy and their permitting agencies, such as the Colorado Department of Public Health and Environment.

  LEARN MORE ABOUT PERMITTING

Permitting – We work closely with our clients to maximize operational flexibility while ensuring compliance with applicable regulations.

READY TO LEARN HOW AIR SCIENCES CAN HELP?

Contact our expert staff!

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Featured Projects