hydraulic fracturing operations, and storage facilities. Its field water filtration and mobile water treatment units decontaminate oil and gas produced water, industrial water, and community water for reuse. Four Sphere provides environmental technical services including assessments, compliance audits, engineering, project execution, spill response, and contaminated site remediation. The firm also researches and applies environmental adsorbents, including patent-pending technologies for adsorbent regeneration and pollutant recycling. In addition, Four Sphere participates in projects that integrate emissions control with lithium extraction from production and fracturing water.