## 3 Results  
This chapter presents the findings from the mercury emissions measurements conducted in the remediated area. The data provide insights into the effectiveness of the remediation process and the extent of mercury reduction achieved. Laboratory tests were performed on soil samples to identify mercury-contaminated sites and determine whether the contamination involved metallic mercury. These tests included a method for measuring the total mercury content in the soil and a proprietary method for assessing the emissions-capable mercury content using a flask sensor. The results of the total mercury content and emissions-capable mercury content in soil samples from the industrial site are summarized in Table 5. Based on these results, areas contaminated with mercury were delineated. The distribution of mercury content in soil samples from the analyzed industrial facility is shown in Figure 2. The analysis revealed a diverse distribution of mercury contamination in the studied area (Table 5). The site was characterized by two distinct zones: a larger area free of mercury contamination and a smaller area of approximately 100 m\({}^{2}\) with significant mercury contamination. As previously mentioned, the soil samples were also analyzed to determine the emissions-capable mercury content. The comparison of the obtained research results and measurements is illustrated in Figure 3. \begin{table}
\begin{tabular}{c c c c c} \hline \hline  & & \multicolumn{2}{c}{**Results of Soil Sample Analysis from the**} & & \\  & & **Depth of 0.0–0.6 m bts** & & \\ \cline{3-4}  & **Sampling Location** & **Total Mercury Content** & **Emission-Capable** & **Field Measurements** \\  & & **in Soil [mg/kg** & **Mercury Content** & **Emissions Levels** \\  & & **Dry Matter]** & **[mg/kg Dry Matter]** & \\ \hline  & & Area near the blocking & & \\  & and bleed systems & 1.6–1200 & \textless{}15–\textgreater{}300 & Emissions levels for the & \\  & & Area around & & & contaminated area \\  & & the mercury & 0.6–3.61 & \textless{}15 & Emissions levels in \\  & & removal facility & & & mercury-free areas \\ \cline{3-4}  & & Area near the reservoir & & & \\  & water separator & 26 & \textless{}15 & Emissions levels in \\  & & The remaining area of & & & mercury-free zones \\ \hline  & & & & & \\  & & the industrial facility & 0.6 \(\div\) 27 & \textless{}15 & Emissions levels in \\  & & & & & mercury-free zones \\ \hline \hline \end{tabular}
\end{table} 
Table 5: Summary of mercury content results in soil samples collected from the industrial site where the remediation treatment was conducted. Figure 3: Summary of the distribution of total and liable mercury yield results for soil samples taken from the contaminated area of the investigated plant. Figure 2: Distribution of results of mercury content for soil samples taken from the analyzed object (industrial facility). The results of the mercury emissions measurements for the remediated area are presented graphically in Figure 4 (measurements with passive sensors) and Figure 5 (measurements with diffusion chambers). Figure 4: Distribution of results of mercury emissions measurements in the remediated area. Measurements taken prior to remediation, 21 days after remediation, and 90 days after remediation with passive sensors. Figure 5: Distribution of results of mercury emissions measurements in the remediated area. Measurements taken prior to remediation, 21 days after remediation, and 90 days after a diffusion chamber remediation. Additionally, studies were conducted on the soil samples from the area undergoing remediation to evaluate the potential migration of mercury in contaminated soil to deeper soil layers and groundwater, given its solubility. The analysis of water extracts from the soil samples assessed the content of soluble forms of mercury. Tests were performed on the soil samples with a total mercury content ranging from 70 to 800 mg/kg dry matter.