"Hydrogeology Project" and "Tracers in Hydrogeology" ######################################## Data protocol ######################################## (0) General data - Location: PIrna, Pratzschwitzer Str. 15, Test field of TU Dresden - Well number: 7 - Well diameter: 125 mm (i.e.. approx. 5 inch) - Date of tracer experiment: 10.05.2023 - Approximate time of tracer experiment: from 12:15 to 14:55 - Type of tracer experiment: dilution test followed by pump back phase - Tracers injected: NaCl, Deuteriumoxid - Weather conditions: sunny, no rain (1) Injection phase: - Starting time of injection: 10.05.2023 12 : 19 : 30 - Ending time of injection: 10.05.2023 12 : 21 : 50 - Effective duration of injection: 140 seconds - Depth of injection: from 9.80 m to 13.0 m, below upper pipe edge - Injection volume: 38 liters (40 liters in barrel at the beginning minus remaining amount in barrel [which was ~2 Liters ]) - Tracer mass NaCl: 250 g in complete barrel --> effectively injected: 237.5 g - EC value of background: 548 µS/cm = 0.55 mS/cm - Chloride concentration of background: 42.7 mg/L - EC value of tracer: 9360 µS/cm = 9.36 mS/cm - Chloride concentration of tracer: 4105.2 mg/L - Tracer mass Deuteriumoxid 99,9at-% 10 ml in complete barrel --> effectively injected: 9.5 ml - Deuterium value of background: -55.3 (permille vs. VSMOW) - Deuterium value of tracer: 1580.2 (permille vs. VSMOW) (2) Drifting phase: depth (m below upper pipe edge) | time | EC value (mS/cm) ---------------------------------------------------------------------------------------------- 7.5 12:27:20 1.013 7.5 12:35:40 0.962 7.5 12:41:00 0.966 7.5 12:58:00 0.917 7.5 13:12:00 0.885 7.5 13:22:00 0.8 8 12:27:50 0.949 8 12:35:20 0.924 8 12:41:20 0.95 8 12:58:30 0.925 8 13:12:00 0.912 8 13:22:15 0.89 8.5 12:28:10 0.899 8.5 12:35:00 0.885 8.5 12:41:40 0.9 8.5 12:59:00 0.92 8.5 13:12:00 0.901 8.5 13:22:30 0.91 9 12:28:30 0.828 9 12:34:50 0.897 9 12:42:00 0.888 9 12:59:30 0.924 9 13:13:00 0.897 9 13:22:45 0.9 9.5 12:28:50 0.922 9.5 12:24:40 0.96 9.5 12:42:20 0.925 9.5 13:00:00 0.92 9.5 13:13:00 0.858 9.5 13:23:00 0.89 10 12:29:20 1.06 10 12:34:30 1.05 10 12:42:40 1.016 10 13:00:15 0.909 10 13:14:00 0.845 10 13:23:12 0.88 10.5 12:29:40 1.27 10.5 12:34:20 1.16 10.5 12:43:00 1.013 10.5 13:00:30 0.86 10.5 13:14:00 0.791 10.5 13:23:24 0.77 11 12:30:00 1.146 11 12:34:10 1.02 11 12:43:20 0.9 11 13:00:45 0.779 11 13:14:00 0.733 11 13:23:36 0.71 11.5 12:30:20 1.34 11.5 12:34:00 1.3 11.5 12:43:40 1 11.5 13:01:00 0.833 11.5 13:15:00 0.725 11.5 13:23:48 0.75 12 12:31:00 2.01 12 12:33:50 1.87 12 12:44:00 1.16 12 13:01:15 0.914 12 13:15:00 0.74 12 13:24:00 0.77 12.5 12:31:40 3.8 12.5 12:33:40 2.81 12.5 12:44:15 1.43 12.5 13:01:30 1 12.5 13:16:00 0.761 12.5 13:24:15 0.81 13 12:31:20 6.2 13 12:33:30 6.1 13 12:44:30 3.02 13 13:01:45 1.5 13 13:16:00 0.784 13 13:24:30 0.99 13.5 12:31:40 6.8 13.5 12:33:20 6.66 13.5 12:44:45 6.54 13.5 13:02:00 5.92 13.5 13:16:00 3.37 13.5 13:24:45 4.9 14 12:32:10 6.5 14 12:33:00 6.56 14 12:45:05 6.44 14 13:02:15 6.42 14 13:17:00 6.4 14 13:25:00 6.4 (3) Recovery phase (pumpback): - Starting time of pumpback: 10.05.2023 14:32:00 - Ending time of pumpback: 10.05.2023 14:54:00 - Depth of pump: approx. at 9.00 m below upper pipe edge - Effective Duration of pumpback: 1320 seconds - flow rate device: MID system - sampling approach: >> manual sampling (20 x isotopes; 6 x reference samples for EC and chloride concentration) >> discontineous EC measurements (3-A) Flow rate protocol (measurement every 30 seconds) time | flow rate ( -- m3/h ---) ------------------------------------------------------------ 14.32.30 13.49 14.33.00 13.67 14.33.30 13.65 14.34.00 13.70 14.34.30 13.80 14.35.00 13.80 14.35.30 13.81 14.36.00 13.78 14.36.30 13.79 14.37.00 13.76 14.37.30 13.79 14.38.00 13.73 14.38.30 13.80 14.39.00 13.58 14.39.30 13.79 14.40.00 13.84 14.40.30 13.80 14.41.00 13.81 14.41.30 13.83 14.42.00 13.81 14.42.30 13.84 14.43.00 13.83 14.43.30 13.83 14.44.00 13.82 14.44.30 13.80 14.45.00 13.78 14.45.30 13.83 14.46.00 13.79 14.46.30 13.83 14.47.00 13.78 14.47.30 13.86 14.48.00 13.82 14.48.30 13.84 14.49.00 13.84 14.49.30 13.85 14.50.30 13.82 14.51.00 13.82 14.51.30 13.84 14.52.00 13.86 14.52.30 13.83 14.53.00 13.82 14.53.30 13.86 14.54.00 13.84 (3-B) EC value protocol time | EC value (µS/cm) ---------------------------------------------- 14:35 988 14:37 770 14:41 677 14:43 672 14:44 669 14:46 669 14:47 666 14:49 664 14:50:40 660 14:53:40 660 (3-C) Sampling protocol - isotopes (samples 1 to 20) Deuterium all values except the tracer have an error of below plusminus 1 permille time | sample number | deuterium value (permille vs. VSMOW) -------------------------------------------------------------------------------------------------- - Groundwater (0% Tracer) -55.4 - 100% Tracer + 1580.23 plusminus 3.6 14:34:30 1 5.5 14:35:26 2 -7.8 14:36:05 3 -21.9 14:37:10 4 -35.1 14:38:10 5 -41.8 14:39:06 6 -47.4 14:40:00 7 -50.0 14:41:00 8 -49.3 14:42:00 9 -52.9 14:43:00 10 -52.0 14:44:00 11 -53.6 14:45:00 12 -54.6 14:46:00 13 -53.1 14:47:00 14 -55.2 14:48:00 15 -55.4 14:49:00 16 -55.5 14:50:00 17 -56.0 14:51:00 18 -55.6 14:52:00 19 -56.6 14:53:05 20 -56.2 for info (oxygen-18) time | sample number | deuterium value (permille vs. VSMOW) -------------------------------------------------------------------------------------------------- - Groundwater -8.0 - Tracer -7.7 14:34:30 1 -8.0 14:35:26 2 -8.0 14:36:05 3 -8.3 14:37:10 4 -8.1 14:38:10 5 -7.9 14:39:06 6 -8.0 14:40:00 7 -8.1 14:41:00 8 -7.5 14:42:00 9 -8.1 14:43:00 10 -7.8 14:44:00 11 -8.0 14:45:00 12 -8.2 14:46:00 13 -7.8 14:47:00 14 -8.0 14:48:00 15 -8.0 14:49:00 16 -8.0 14:50:00 17 -8.0 14:51:00 18 -7.9 14:52:00 19 -8.1 14:53:05 20 -8.0 (3-D) Sampling protocol - reference samples (samples A to F) time | sample number | EC value (µS/cm) | Chloride content etc. -------------------------------------------------------------------------------------------------- - Groundwater 548 see IC_GW - Tracer 9360 see IC_Tracer 14:34 A 962 see IC_A 14:37 B 658 see IC_B 14:41 C 574 see IC_C 14:45 D 548 see IC_D 14:49 E 559 see IC_E 14:53 F 594 see IC_F IC values in mg/L, "?" = unknown, not measurable due to high tracer concentration Sample | Chlorid | Nitrat | Sulfat | Lithium | Natrium | Kalium | Magnesium | Calcium ---------------------------------------------------------------------------------------------------------------- IC_GW 42.7 12.0 163.5 0.0 29.8 5.3 30.5 128.0 IC_Tracer 4105.2 12.6 165.4 ? 3279.6 ? ? ? IC_A 206.8 12.6 162.2 0.0 138.7 6.7 33.3 138.2 IC_B 94.0 12.3 162.0 0.0 62.3 5.9 31.7 132.6 IC_C 54.1 12.1 162.3 0.0 37.5 5.5 30.3 129.8 IC_D 45.0 12.4 162.5 0.0 31.0 5.4 30.4 127.8 IC_E 45.7 12.2 162.3 0.0 31.9 5.5 30.6 130.5 IC_F 45.1 12.0 162.2 0.0 31.5 5.5 30.5 129.0