## 3 Results and Discussion
### Total Petroleum Hydrocarbon Concentration Analysis
\begin{table}
\begin{tabular}{c c c c c} \hline \hline Sample point 1 (251 Scarisoara Nouá) & & & \\ \hline \multirow{2}{*}{Try} & \multicolumn{4}{c}{TPH (mg/Kg s.u.)} \\ \cline{2-5}  & Sampling level A 0.05 (m) & Sampling level B 0.3 (m) & Sampling level C 0.6 (m) & Sampling level D 0.9 (m) \\ \hline P1 & 280 & 1510 & 159 & 129 \\ \hline P2 & 49 & 40 & 30 & 31 \\ \hline P3 & 413 & 165 & 42 & 34 \\ \hline P4 & 91 & 90 & 27 & 250 \\ \hline P5 & 34 & 32 & 31 & 31 \\ \hline Sample point 2 (560 Mihai Bravu West) & & & & \\ \hline P1 & 235 & 928 & 137 & 64 \\ \hline P2 & 5684 & 973 & 71 & 72 \\ \hline P3 & 866 & 361 & 1417 & 4315 \\ \hline P4 & 133 & 185 & 1799 & 144 \\ \hline P5 & 224 & 32 & \textless{}27.1 & \textless{}27.1 \\ \hline Sample point 3 (561 Mihai Bravu West) & & & & \\ \hline P1 & 5028 & 1271 & 56 & 44 \\ \hline P2 & 54 & 27.1 & 28 & 27.1 \\ \hline P3 & 572 & 351 & 40 & 27.1 \\ \hline P4 & 1017 & 1046 & 67 & 27.1 \\ \hline Sample point 4 (682 Suplac) & & & & \\ \hline P1 & 2070 & 1890 & 931 & 741 \\ \hline P2 & 479 & 35 & 35.1 & 57.8 \\ \hline P3 & 2610 & 65,400 & 58,000 & 7730 \\ \hline P4 & 1000 & 254 & 73.7 & 82.2 \\ \hline Sample point 5 (921 Suplac) & & & & \\ \hline P1 & 7350 & 455 & 97.7 & 104 \\ \hline P2 & 8060 & 89.9 & 53.7 & 43.3 \\ \hline P3 & 1230 & 1160 & 575 & 588 \\ \hline P4 & 709 & 1849 & 725 & 1670 \\ \hline P5 & 17,300 & 8760 & 2290 & 102 \\ \hline Sample point 6 (514 Bors) & & & & \\ \hline P1 & 2760 & 2020 & 1710 & 710 \\ \hline P2 & 2830 & 2190 & 360 & 1200 \\ \hline P3 & 1560 & 1060 & 100 & 130 \\ \hline P4 & \textless{}50 & 3050 & 150 & 60 \\ \hline P5 & 2800 & 1880 & 1480 & 1940 \\ \hline P6 & 2500 & 2600 & 400 & 450 \\ \hline P7 & 71,500 & 96,700 & 3300 & 500 \\ \hline P8 & 6600 & 8500 & 400 & 400 \\ \hline \hline \end{tabular}
\end{table} 
Table 2: TPH concentration data for samples taken. Sample point 4 (682 Suplac) sample P1 for all depths TPH concentration values were above the action threshold values for sensitive land use. In the case of borehole P2 for depth 0.05 m, TPH concentration values were above the alert threshold values (479) but below the intervention threshold for sensitive land use. At greater depths, the values are below the alert threshold. In the case of borehole P3 for all depths, TPH concentration values were above the action threshold values for sensitive land use (the maximum determined reaching values of 65,400. In the case of borehole P4 for the depth of 0.05 m, TPH concentration values were above the action threshold values (1000). At a depth of 0.3 m they are above the alert threshold values but below the action threshold for sensitive land use, and at greater depths, the values are below the alert threshold. For Sample point 5 (921 Suplac) samples P1 and P2, it was determined that the TPH indicator concentration value is above the action threshold for less sensitive land use at shallow depths (7350 for P1, respectively 8060 for P2) but for depths greater than 0.30 m the TPH indicator concentration value is below the alert threshold. In the case of borehole P5 up to 0.6 m depth, it was found that the value of TPH indicator concentrations is above the action threshold (with a maximum of 17,300 at 0.05 m) and at 0.90 m below the alert threshold (102) (Table 2). For Sample point 6 (514 Bors), in the case of drilling near the well column (P1), it was found that up to 0.30 m depth, the TPH concentration is above the action threshold (2760), at 0.60 m it is above the alert threshold but below the action threshold (1710) and at 0.90 the TPH concentration values are below the alert threshold (710). Situations where the TPH concentration is above the intervention threshold were identified for boreholes P2 and P4 at depths up to 0.30 m (with 1060, respectively 3050), for borehole P5 at 0.05 m (2800), for borehole P6 up to 0.30 m (2500) and P8 at depths up to 0.30 m (6600).