Within the scope of the "Ulaanbaatar Metro" project, a detailed soil analysis was conducted at 15 designated station locations to establish the environmental baseline conditions. This study is essential for determining whether the soil conditions at the project sites are safe for public health and for documenting the pre-construction baseline conditions.

Heavy Metal Analysis:

The analysis conducted to determine the concentrations of heavy metals, which have the most significant impact on public health, yielded the following results:

• Elements tested: Zinc (Zn), Chromium (Cr), Lead (Pb), Copper (Cu), Nickel (Ni), and Cadmium (Cd).
• Conclusion: All tested parameters are within the permissible limits set by the Mongolian National Standard (MNS 5850:2019). No heavy metal contamination was detected.
• Risk Assessment: According to the ecological risk assessment, professional organizations have concluded that the soil at the project site is "safe" for human health and has no adverse environmental impact.

Soil Condition:

The study indicates that meadow-permafrost soil, anthrosol (urbanized soil), and dark chestnut soil are the predominant types within the project’s impact zone. Although human activity and urbanization have altered the natural soil structure in certain areas, the majority of locations are evaluated as "uncontaminated" according to the ecological index. This indicates that the soil quality at the project site remains in good condition.

LABORATORY ANALYSIS RESULTS