This study designed a context-specific strategic model for the environmental sustainability of Iran's Gol-Gohar Mining and Industrial Complex. The research aimed to (i) localize environmental indicators, (ii) assess baseline conditions and operational impacts, and (iii) formulate weighted strategies to address critical sustainability gaps. Using a sequential mixed-methods approach, qualitative data from literature reviews, document analysis, and expert interviews identified 34 localized environmental indicators (Cronbach’s α = 0.713). Quantitatively, a one-sample t-test assessed baseline realization, the Modified Leopold (Iranian) Matrix evaluated environmental impacts, and the Analytic Hierarchy Process (AHP) prioritized indicators and strategic factors. Finally, a SWOT-AHP framework integrated these findings to generate actionable, weighted strategies. Results indicated that the complex's operations are conditionally acceptable, provided corrective and rehabilitation measures are implemented. The most severe negative impacts affected soil, air, water, and biological components. The SWOT-AHP analysis revealed a pronounced defensive posture, with Threats (weight = 0.442) and Weaknesses (weight = 0.296) accounting for 73.8% of the total strategic weight. Consequently, Defensive (WT) strategies were prioritized, particularly focusing on water resource management (combined weight = 0.1686) and the establishment of a binding corporate sustainability framework (combined weight = 0.1344). This integrated model provides decision-makers with an evidence-based tool to mitigate environmental degradation while ensuring the complex's long-term operational viability.