Carbon Capture, Utilization, and Storage (CCUS) is a promising technology to reduce greenhouse gas emissions, presenting environmental opportunities alongside critical risks. The environmental risks of CCUS require preliminary investigation to ensure sustainable development. The current study presents a systematic literature review and a pre-LCA (Life Cycle Assessment) screening matrix to identify and prioritize environmental risks across the CCUS value chain. Using a heat map technique, with likelihood and severity criteria, showing pipeline rupture, carbon dioxide (CO₂) and methane leakage as high-priority risks by developing a 5x5 environmental risk matrix. Targeted mitigation strategies such as advanced monitoring, better material selection, and proactive maintenance are proposed to reduce the risks in the project lifecycle. By identifying these risks before full Life Cycle Assessment (LCA), this study provides practical strategies to improve CCUS sustainability. The study contributes to bridge current knowledge gaps for safer and more sustainable CCUS deployment.