Lithium Mine, South America
Integral performed geological studies and lithium resource assessment work at a brine extraction and lithium processing facility at a salar (salt lake) in South America. The facility extracts mineral-rich brines from a well field within the salar and concentrates lithium at a local processing facility for further lithium manufacturing in South America and the U.S. Both brine and fresh water resources are critical to the operations at the salar.
As part of our work, we assisted the client to better understand the magnitude of lithium reserves, and identified tools to maximize sustainable development of the lithium resource. In addition, Integral was retained to support sustainable use of freshwater resources in support of the lithium manufacturing operations. The evaluation of fresh groundwater resources has been critical to ensure operation of the lithium manufacturing facility.
Empresa Portuaria Valparaíso, Port of Valparaíso, Chile
Integral conducted a baseline monitoring study for the Port of Valparaiso to assess the quality of water, sediment, and benthos in the port’s jurisdiction. The study involved collection of sediment grab samples for benthic community assessment and sediment chemical analysis. The scope included CTD casts and in situ pH measurements as well as collection of water column samples. Following field data collection, laboratory analytical results were evaluated in light of the regulatory requirements of Chile’s environmental ministry. Results were used to develop a comprehensive monitoring plan for the port. Additionally, an impact evaluation was conducted including mitigation strategies for the port in consideration of potential future uses.
Materials Characterization and Management of a New Mine, Peru
Integral developed an acid materials management plan for the construction of a new mine in Peru. Because the area surrounding the mine contained some acid generating materials, it was possible that construction, road building, and other infrastructure activities could affect water quality. Integral staff characterized the materials, which included pyrite-rich sediment and soil, organic-acid-rich wetland sediment, and altered pyrite-rich country rock, and determined their impacts to water quality. This work allowed the mine to classify materials according to their geochemical characteristics and their potential use, thus ensuring that water quality would be maintained within regulatory limits while providing increased flexibility during mine construction.
Human Health Risk Assessment, Peru
Integral conducted a human health risk assessment for an active smelter in the Andes Mountains. Bilingual Integral scientists conducted two field sampling efforts in the community surrounding the smelter to characterize potential exposure media, including drinking water, surface soil, outdoor dust, and dust in homes. These data were combined with biomonitoring and dietary intake data for the population and air dispersion and deposition modeling results to complete the human health risk assessment.
Integral adapted EPA methodology to characterize current risks to the surrounding community from exposure to sulfur dioxide particulates and metals. In addition, Integral evaluated the effects on current baseline risk levels resulting from various upgrades to the smelter facility. The risk assessment results and recommendations made by Integral toxicologists on exposure reduction assisted the government and the client in risk management decisions for the facility and surrounding community. Integral scientists also provided educational workshops for the community to explain risk assessment methodology and presented the results at public hearings attended by thousands of residents and workers.
DDT Transport Investigation, Lago Maggiore, Italy
Integral assisted in conducting a DDT transport investigation of the Toce River, Lake Mergozzo, and Lago Maggiore. The investigation was conducted to gain a better understanding of the hydrodynamic processes and the stability of sediments and contaminants in the area. A key goal of the investigation was to predict the long-term deposition of DDT-contaminated sediment under two climate change scenarios as defined by the Intergovernmental Panel on Climate Change. Work included leading the field investigation and modeling team and developing state-of-the-art, 3-dimensional, hydrodynamic and sediment transport models to investigate sediment transport in the Toce River and depositional patterns in Lago Maggiore. The model was successfully used to evaluate the patterns of contaminant deposition and long-term recovery. The data were used to develop a risk assessment for the site.
Environmental Due Diligence, Multiple Sites, Worldwide
Integral has staff have managed hundreds of environmental site assessments of commercial and industrial properties in 25 states, the U.S. Virgin Islands, Canada, Belgium, Denmark, France, Italy, Norway, and Poland. Some of the due diligence assessments performed were for portfolios holding more than 100 sites and included Phase II site assessments with soil, groundwater, soil vapor, and/or indoor air investigations. Clients include the transportation sector, hotel/resorts, financial institutions, and real estate investment trusts.