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Strengthen Pollution Control and Restoration of Soil and Ground Water

The Company conducted whole-process management and control over solid wastes such as oily sludge and drilling wastes. Drilling wastes in environmentally sensitive areas are collected on site without contacting the soil, and oil-based drilling wastes are recycled and disposed of after bio-safety treatment. Underground storage tanks at 11,315 gas stations underwent anti-seepage revamping.