Mise-a-la-Masse Measurements at Olkiluoto 2007 and 2008

Transcription

1 Working Report 28-3 Mise-a-la-Masse Measurements at Olkiluoto 27 and 28 Anna-Maria Tarvainen June 28 POSIVA OY Olkiluoto FI-2716 EURAJOKI, FINLAND Tel

2 Working Report 28-3 Mise-a-la-Masse Measurements at Olkiluoto 27 and 28 Anna-Maria Tarvainen Suomen Malmi Oy June 28 Base maps: National Land Survey, permission 41/MYY/8 Working Reports contain information on work in progress or pending completion. The conclusions and viewpoints presented in the report are those of author(s) and do not necessarily coincide with those of Posiva.

3 ABSTRACT Mise-a-la-masse measurements at Olkiluoto, 27 and Anna-Maria Tarvainen, Suomen Malmi Oy Suomen Malmi Oy carried out mise-a-la-masse measurements at Olkiluoto site in Eurajoki during November and December 27 as well as January, February and March 28. The survey consisted of measurements in 1 drillholes and on 27 surface profiles. The survey is a part of Posiva Oy s detailed investigation program for the final disposal of spent nuclear fuel. The assignment included the field work and the data processing. This report describes the field operation, the equipment as well as the processing procedures and shows the obtained results and their quality. The raw and processed data are delivered digitally in Microsoft Ecxel and PDF format. Key words: Geophysics, mise-a-la-masse method, structural geology, nuclear waste disposal

4 TIIVISTELMÄ Sähköiset latauspotentiaalimittaukset Olkiluodossa vuonna 26 ja Anna-Maria Tarvainen, Suomen Malmi Oy Suomen Malmi Oy teki latauspotentiaalimittauksia Olkiluodon tutkimusalueella marras- ja joulukuussa 27 sekä tammi-, helmi- ja maaliskuussa 28. Tutkimus koostui mittauksista 1 kairareiässä ja 27 maanpintaprofiililla. Työ tehtiin Posiva Oy:n tilauksesta osana yksityiskohtaisia kallioperätutkimuksia käytetyn polttoaineen loppusijoitusta varten. Toimeksiantoon kuuluivat kenttätyöt ja aineiston tuloskäsittely. Raportissa on kuvattu kenttätöiden kulku, käytetty kalusto ja tehdyt korjaukset sekä esitetty tulosten laatu. Tulokset on toimitettu tilaajalle digitaalisesti Microsoft Excel- ja PDF -muotoisina tiedostoina. Avainsanat: Geofysiikka, latauspotentiaalimenetelmä, rakennegeologia, ydinjätteen loppusijoitus

5 CONTENTS Abstract Tiivistelmä Contents Introduction Equipment and methods Field work Current electrodes in drillhole OL-KR Current electrodes in drillhole OL-KR27 and OL-TK Current electrodes in ONKALO tunnel Current electrodes in drillhole OL-KR4 and OL-TK Current electrodes in drillhole OL-KR27 and in ONKALO tunnel Current electrodes in drillhole OL-KR Conclusions References...25 Appendix 1: The Results of mise-a-la-masse measurements Appendix 1.1 Current electrodes in drillhole OL-KR Appendix 1.2 Current electrodes in drillhole OL-KR27 and investigation trench OL-TK Appendix 1.3 Current electrodes in ONKALO tunnel...35 Appendix 1.4 Current electrodes in drillhole OL-KR4 and investigation trench OL-TK Appendix 1.5 Current electrodes in drillhole OL-KR27 and in ONKALO tunnel...49 Appendix 1.6 Current electrodes in drillhole OL-KR Appendix 2: Tool technical information ABEM Terrameter SAS...91

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7 3 1 INTRODUCTION Posiva Oy carries out the spent nuclear fuel related research and development in Finland. Work is focused in Olkiluoto, Eurajoki where the underground characterisation facility ONKALO has been constructed since 24. Suomen Malmi Oy (Smoy) carried out mise-a-la-masse ground surface and downhole surveys for Posiva Oy in December 27 and January-March 28 according to the purchase orders and The aim of the surveys was to investigate electrically conducting zones in Olkiluoto investigation site, especially the continuation of the zones to other drillholes and to ground surface. The investigations were carried out in drillholes OL-KR4, OL-KR11, OL-KR27, OL-KR4, OL-KR42 and OL-KR44- OL-KR48 as well as on surface profiles. This report describes field operation and data processing. The quality of the results is shortly analysed and the data presented in the appendices. The survey plan was designed by Turo Ahokas from Pöyry Environment Oy who also supervised the quality control. Arto Kumpulainen (Smoy) coordinated the field work. The report was compiled by Anna-Maria Tarvainen (Smoy) and Mari Lahti from Posiva Oy drafted the example maps.

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9 5 2 EQUIPMENT AND METHODS Mise-a-la-masse measurements can be carried out for example to investigate fractured, crushed and other electrically conducting zones or ore bodies. Measurements are carried out with two current and two potential electrodes. Both ground surface and drillhole measurements are possible. One current electrode is mounted to contact the conducting body and another is placed at remote distance. The voltage distribution is measured around the conducting body using two electrodes of which one is fixed and another mobile. The more specific description of mise-a-la-masse method can be found for example in the previous Posiva Working Reports in relation to mise-a-la-masse surveys (Lehtonen, T. and Heikkinen, E, 24, Lehtonen, T., 26). The drillhole surveys were carried out using Smoy s ABEM Terrameter SAS Equipment. ABEM Terrameter SAS resistivity system consists of a transmitter-receiver unit SAS 3 C and a separate booster SAS 2 for the transmitter. It can be used as a self-potential, a dipole-dipole or a mise-a-la-masse instrument. The output current can be chosen from.2 ma to 2 ma. The input voltage range is from to 5 V. More technical information of the tool is presented in Appendix 2.

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11 7 3 FIELD WORK The field work was carried out within 62 working days in November and December 27 as well as January, February and March 28. The assignment consisted of measurements in 1 drillholes and on 27 ground profiles. The measured drillholes were OL-KR4, OL-KR11, OL-KR27, OL-KR4, OL-KR42 and OL-KR Their locations are presented in Figure 1. The locations of the ground profiles towards west and north from the Korvensuo pond and on investigation trench OL-TK14 are presented in Figure 2. Current electrodes were placed in drillholes OL-KR4, OL-KR11, OL-KR27 and OL-KR4, on the wall of ONKALO tunnel and on two investigation trenches OL- TK-13 and OL-TK14. The duration of the field work is listed in Table 1. The results of the survey are presented in paragraphs and appendices Data was processed and the graphs drawn using Microsoft Excel software. Example maps were compiled using Geosoft Oasis Montaj.

12 8 Table 1: The duration of the field work. Date Action Surveyors Preparations of mise-a-la-masse surveys AK, PT Current groundings: reference electrode and OL-KR4 AK, PT Current groundings: OL-KR4 AK, PT Current groundings: ONKALO AK, PT Measurements: OL-KR11, OL-KR46 AK, PT Measurements: OL-KR11, OL-KR44 AK, PT Measurements: OL-KR45 AK, PT Measurement preparations AK, PT Measurement preparations, Measurements: OL-KR4 AK, PT Measurements: OL-KR46 AK, PT Current grounding: OL-KR4 AK, KLa, PT Current grounding: OL-KR4, Measurement: OL-KR4 AK, KLa, PT Measurements: OL-KR4, OL-KR44 AK, KLa, PT Measurements: OL-KR45 AK, PT Measurements: OL-KR27 AK, PT Measurements: OL-KR42 AK, PT Surface measurement preparations AK, PT Measurements: OL-KR46, OL-KR11, Surface measurements AK, KLa, PT Measurements: OL-KR11, Surface measurements AK, PT Measurements: OL-KR42 AK, KLa, PT Measurements: OL-KR4 AK, KLa, PT Measurements: OL-KR45, Surface measurements AK, KLa Measurements: OL-KR11, Surface measurements AK, KLa 4.1. Measurements: OL-KR47, Surface measurements AK, HP, PT 5.1. Measurements: OL-KR47 AK, PT 6.1. Surface measurements AK, HP, PT 7.1. Current grounding: OL-KR11 AK, HP, PT 8.1. Measurements: OL-KR4 AK, HP, PT Measurements: OL-KR42 AK, HP, PT Measurements: OL-KR4 AK, HP, PT Measurements: OL-KR44 AK, LL, PT Measurements: OL-KR44, Surface measurements AK, LL, PT Measurements: OL-KR27, Surface measurements AK, LL, PT Measurements: OL-KR42, OL-KR46, Surface measurements AK, PT 2.1. Measurements: OL-KR46, Surface measurements AK, PT Surface measurements AK, HP, PT Surface measurements AK, HP, PT Surface measurements AK, HP, PT Measurements: OL-KR45 AK, PT Measurements: OL-KR11 AK, PT 3.1. Surface measurements AK, PT Surface measurements AK, PT Measurements: OL-KR47 AK, PT

13 Date Action Surveyors 2.2. Measurements: OL-KR47 AK, PT Measurements: OL-KR47, OL-KR42 AK, PT Measurements: OL-KR46, OL-KR27 AK, PT Measurements: OL-KR11, Surface measurements AK, PT Surface measurements AK, PT Surface measurements AK, PT Surface measurements AK, PT Surface measurements AK, PT 3.3. Measurements: OL-KR44, Surface measurements AK, PT 4.3. Measurements: OL-KR45 AK, PT 5.3. Surface measurements AK, PT 6.3. Surface measurements AK, PT 7.3. Surface measurements AK, PT 8.3. Surface measurements AK, PT 9.3. Surface measurements AK, PT 1.3. Measurement preparations AK, PT Measurements: OL-KR47 AK, PT Measurements: OL-KR48 AK, PT 9

14 1 Figure 1: Map of the survey area. The drillholes used during the survey campaign are shown in red. The grid on the map is 1 m. Figure 2: Location of the ground profiles (blue lines) and the drillholes (red triangles) used in the survey. The southernmost profiles are 5 m long.

15 Current electrodes in drillhole OL-KR4 The current groundings in OL-KR4 were mounted on six depths from 8 m down to 759 m and the measurements using these groundings were carried out in six drillholes listed in Table 2. The total survey amount for the OL-KR4 groundings was 491 meters. The results are slightly noisy if they are compared to the measurements from year 26 (Figures 3 and 4). Continuous developing of the investigation site and as an example new power lines are the probable reason for the increased noise. Some potential peaks occur in OL-KR48 data but their source is unknown (Figure 5). Drillhole OL-KR47 was blocked at 91 m depth and therefore the survey finished about 9 m short. For OL- KR27 and OL-KR4 groundings the survey probe reached 925 m depth where the measurement was aborted because of a known fractured zone at 927 m. The results are presented in Appendix 1.1. Table 2: Downhole measurements with current electrodes in drillhole OL-KR4. Current electrodes in OL-KR4 Length Measured drillhole 8 m 116 m 314 m 368 m 49 m 759 m [m] OL-KR11 x x x x x x 995 OL-KR44 x x x x x x 895 OL-KR45 x x x x x x 995 OL-KR46 x x x x x x 595 OL-KR47 x x x x x x 91 OL-KR48 x x x x x x 52 Total length 491

16 12,15 Mise-a-la-Masse Survey: Borehole OL-KR4, current electrodes in OL-KR4 (year 26),1,5 -,5 -,1 -,15 -,2 KR-4/8m KR-4/116m KR-4/314m KR-4/368m KR-4/49m KR-4/759m -,25 -, Figure 3: Older data from drillhole OL-KR4 showing lower noise level than the surveys.,15 Mise-a-la-Masse Survey: Borehole OL-KR45, current electrodes in OL-KR4 (year 27),1,5 -,5 -,1 -,15 -,2 KR-4/8m KR-4/116m KR-4/314m KR-4/368m KR-4/49m KR-4/759m -,25 -, Figure 4: The results of drillhole OL-KR45. The background noise envelope has increased since 26.

17 13 Mise-a-la-Masse Survey: Borehole OL-KR48, current electrodes in OL-KR4 1,5 1,5 -,5-1 -1, KR-4/8m KR-4/116m KR-4/314m KR-4/368m KR-4/49m KR-4/759m Figure 5: The measurements of drillhole OL-KR48. The source of the potential peaks is unknown. 3.2 Current electrodes in drillhole OL-KR27 and OL-TK13 The groundings were placed on depth 338 m in drillhole OL-KR27. Also two previously mounted groundings at investigation trench OL-TK13 were used. The locations for these are OL-TK13/1 ( , ) and OL-TK13/2 ( , ). The measurements using OL-KR27 and OL-TK13 groundings were carried out in five drillholes listed in Table 3. The total survey amount was 445 meters. The results are presented in Appendix 1.2. Table 3: Downhole measurements with current electrodes in drillhole OL-KR27 and on investigation trench OL-TK13. Measured drillhole Electrodes in OL-KR27 and at OL-TK m OL-TK-13/1 OL-TK-13/2 Length [m] OL-KR11 x x x 995 OL-KR44 x x x 895 OL-KR45 x x x 995 OL-KR46 x x x 595 OL-KR47 x x x 925 Total length 445

18 Current electrodes in ONKALO tunnel The groundings were mounted on three different locations on the wall in the ONKALO tunnel at chainages PL285, PL72 and PL159. The measurements using these groundings were carried out in three drillholes listed in Table 4. The total survey amount was 175 meters and the results are presented in Appendix 1.3. Table 4: Downhole measurements with current electrodes in ONKALO tunnel. Measured drillhole Electrodes in ONKALO tunnel wall Length [m] PL159 PL72 PL285 OL-KR4 x 765 OL-KR27 x 545 OL-KR42 x x 395 Total length Current electrodes in drillhole OL-KR4 and OL-TK14 Current groundings were placed at five depths in OL-KR4 from 386 m to 968 m and the downhole measurements were carried out in eight drillholes with total surveyed length of 674 m (Table 5). The OL-KR4 survey stopped at 765 m depth because of a fractured zone. Also four drillholes listed in Table 6 were surveyed using a surface current electrode placed on investigation trench OL-TK14. The coordinates for the location of the grounding are easting and northing The total downhole survey amount for the OL-TK14 grounding was 346 m. Additionally both the OL-KR4 and OL-TK14 groundings were used for surveying ground profiles in the vicinity of investigation trench OL-TK14 (Figure 6). The profiles were 5 m long with 25 m line spacing and 1 m sampling interval. The measurements with the OL-TK14 grounding were extended from original plan to follow the conductivity anomaly detected in the preliminary results. Table 7 shows that the ground measurements were carried out on seven profiles with the OL-TK14 grounding and on two profiles with OL-KR4 groundings. The results are presented in Appendix 1.4.

19 15 Table 5: Downhole measurements with current electrodes in drillhole OL-KR4. Measured drillhole Electrodes in OL-KR4 386 m 41 m 716 m 791 m 968 m Length [m] OL-KR4 x x x x x 765 OL-KR11 x x x x x 995 OL-KR27 x x x x x 545 OL-KR4 x x x x x 125 OL-KR44 x x x x x 895 OL-KR45 x x x x x 995 OL-KR46 x x x x x 595 OL-KR47 x x x x x 925 Total length 674 Table 6: Downhole measurements with surface current electrode. Measured drillhole Grounding at OL-TK14 Length [m] OL-KR27 x 545 OL-KR4 x 125 OL-KR44 x 895 OL-KR45 x 995 Total length 346 Table 7: Surface measurements with current electrodes in drillhole OL-KR4 and with surface current electrode on OL-TK14. Line Start End OL- Electrodes in OL-KR4 Length N E E TK m 41 m 716 m 791 m 968 m [m] x x x x x x x x x x x x x x x x x 5 Total length 35

20 16 Figure 6: Measured profiles using the grounding placed on the ground surface at investigation trench OL-TK14. The location of the grounding is pointed. 3.5 Current electrodes in drillhole OL-KR27 and in ONKALO tunnel The grounding placed at 338 m depth in OL-KR27 together with the grounding in ONKALO chainage PL were used for surveying ground profiles near the Korvensuo pond. The surface measurements were carried out on 14 profiles with 5 m line spacing listed in Table 8 and shown in Figure 7. The total survey amount was 11,14 meters. The ground profile graphs are presented in Appendix 1.5. Table 8: Surface measurements with current electrodes in drillhole OL-KR27 and in ONKALO tunnel. Line N Start E End E OL-KR m ONKALO PL Length [m] x x x x x x x x x x x x x x x x x x x x x x x x x x x x 1 Total length 1114

21 17 Figure 7: Surveyed ground profiles using grounding at ONKALO chainage PL Current electrodes in drillhole OL-KR11 The designed survey campaign for the groundings in OL-KR11 is extensive and the measurements were carried out in two phases. In the first phase the groundings were built in every other planned depth starting from the bottom. In the second phase the electrodes were lifted to match the remaining planned grounding depths. The downhole measurements were carried out in eight drillholes and on twenty surface lines. Drillholes are listed in Table 9 and 1. Ground profiles are listed in Tables 11 and 12. The total survey amount were 6735 meters in drillholes and meters on surface lines. The results as graphs are presented in Appendix 1.6. The measurements with the current electrode at 414 meters depth were conducted twice because of a current leakage problem. Figure 8 shows a second potential peak at about 25 m depth that would mean current returning from the grounding to the surveyed drillhole. The cables were checked and a small crack was found. The current leakage distorted the results as shown in the example in Figure 9. The schedule did not allow resurveying the already finished ground profiles but all the downhole surveys were repeated.

22 18 As the ground surveys progressed an obvious conductivity anomaly was detected north from the Korvensuo pond. Figure 1 illustrates that the anomaly continues further north than the originally planned profiles (L L67928). Therefore for the second phase groundings some profiles were continued to west and additional profiles were surveyed towards north to follow the extent of the anomaly. At the same time few profiles were left out in the south where the results did not show any particular connections. Figure 11 shows that the extent of the conductivity anomaly was covered in the west but in the north the anomaly continues beyond the profiles. The survey was aborted though because of the vicinity of the harbour as well as scheduling. For comparison Figure 12 presents results for a deeper grounding at depth of 895 m; the conductivity anomaly no longer appears for this grounding. Table 9: Downhole measurements with current electrodes in drillhole OL-KR11, upper groundings. Measured Current electrodes in OL-KR11 Drillhole 125 m 13 m 216 m 278 m 35 m 373 m Length [m] OL-KR11 x x x x x x 995 OL-KR27 x x x x x x 545 OL-KR4 x x x x x x 125 OL-KR42 x x x x x x 395 OL-KR44 x x x x x x 895 OL-KR45 x x x x x x 995 OL-KR46 x x x x x x 595 OL-KR47 x x x x x x 91 Total length 6355 Table 1: Downhole measurements with current electrodes in drillhole OL-KR11, lower groundings. Measured Current electrodes in OL-KR11 Drillhole 414 m 418 m 45 m 625 m 698 m 739 m 895 m Length [m] OL-KR11 x x x x x x x 995 OL-KR27 x x x x x x x 545 OL-KR4 x x x x x x x 125 OL-KR42 x x x x x x x 395 OL-KR44 x x x x x x x 895 OL-KR45 x x x x x x x 995 OL-KR46 x x x x x x x 595 OL-KR47 x x x x x x x 91 Total length 6355

23 19 Mise-a-la-Masse Survey: Borehole OL-KR11, current electrodes in OL-KR Extra anomalies KR-11/414m (1) KR-11/414m (2) Figure 8: The first measurement (1) shows additional potential peaks around depth of 25 m. The problem does not occur in the second measurement after the repair of the current electrode (2). Mise-a-la-Masse Survey: Borehole OL-KR42, current electrodes in OL-KR11 -,4 -,6 -,8 -,1 -,12 -,14 -,16 -,18 -,2 KR-11/414m (1) KR-11/414m (2) Figure 9: An example of the measurements inflicted by current leakage. The leakage acts as an additional grounding and distorts the results.

24 2 Table 11: Surface measurements with current electrodes in drillhole OL-KR11, upper electrodes. Line N Start E End Current electrodes in OL-KR11 E 125 m 13 m 216 m 278 m 35 m 373 m Length [m] x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x 93 Total length 1867 Figure 1: Surveyed profiles using grounding placed in OL-KR11 at depth of 216 m (first phase). Ground surface projection of the grounding is shown by the green dot.

25 21 Table 12: Surface measurements with current electrodes in drillhole OL-KR11, lower groundings. Line N Start E End Current electrodes in OL-KR11 E 414 m 418 m 45 m 625 m 698 m 739 m 895 m Length [m] x* x x x x* x x x x* x x x x* x x x x* x x x x* x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x 93 * measured only using leaking grounding Total length 1867 Figure 11: Surveyed profiles using grounding placed in OL-KR11 at depth of 414 m (second phase). Ground surface projection of the grounding is shown by the green dot.

26 22 Figure 12: Surveyed profiles using grounding placed in OL-KR11 at depth of 895 m (first phase). Ground surface projection of the grounding is shown by the red dot Please note that the potential values are very small.

27 23 4 CONCLUSIONS The mise-a-la-masse measurements in Olkiluoto were carried out during November and December 27 as well as January, February and March 28. Turo Ahokas from Pöyry Environment designed the survey scheme and also supervised daily quality control. The survey campaign was completed in planned extent with some minor adjustments. The task consisted of approximately meters of measurements in drillholes and on ground surface. The quality of the data achieved the required level although continuous developing of the site has increased cultural noise in the data. The field crew reported of the observed problems and the affected measurements were repeated in required extent. The mise-a-la-masse results are presented as graphs in Appendices The processed data has been delivered to the client digitally. The draft report was compiled in May 28 and final commented report published in June 28.

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29 25 5 REFERENCES ABEM Terrameter SAS Equipment Instruction Manual, Bromma, Sweden, Atlas Copco AB. Heikkinen E., Lehtonen T., 24: Visualization and Modelling of the Year 23 Misea-la-Masse Survey Data at Olkiluoto Site Lehtonen T., 26: Visualization and Interpretation of the Year 24 Mise-a-la-Masse Survey Data at Olkiluoto Site

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31 27 Appendix 1.1: Current electrodes in drillhole OL-KR4,15 Mise-a-la-Masse Survey: Borehole OL-KR11, current electrodes in OL-KR4,1,5 -,5 KR-4/8m KR-4/116m KR-4/314m KR-4/368m KR-4/49m KR-4/759m -,1 -, Figure 1: Potential (V/A) in drillhole OL-KR11, current electrodes in drillhole OL-KR4 at 8, 116, 314, 368, 49 and 759 meter depths.,15 Mise-a-la-Masse Survey Borehole OL-KR44, current electrodes in OL-KR4,1,5 -,5 -,1 -, KR-4/8m KR-4/116m KR-4/314m KR-4/368m KR-4/49m KR-4/759m Figure 2: Potential (V/A) in drillhole OL-KR44, current electrodes in drillhole OL-KR4 at 8, 116, 314, 368, 49 and 759 meter depths.

32 28 Mise-a-la-Masse Survey: Borehole OL-KR45, current electrodes in OL-KR4,15,1,5 -,5 KR-4/8m KR-4/116m KR-4/314m KR-4/368m KR-4/49m KR-4/759m -,1 -, Figure 3: Potential (V/A) in drillhole OL-KR45, current electrodes in drillhole OL-KR4 at 8, 116, 314, 368, 49 and 759 meter depths.,15 Mise-a-la-Masse Survey: Borehole OL-KR46, current electrodes in OL-KR4,1,5 -,5 -,1 -,15 -, KR-4/8m KR-4/116m KR-4/314m KR-4/368m KR-4/49m KR-4/759m Figure 4: Potential (V/A) in drillhole OL-KR46, current electrodes in drillhole OL-KR4 at 8, 116, 314, 368, 49 and 759 meter depths.

33 29 Mise-a-la-Masse Survey: Borehole OL-KR47, current electrodes in OL-KR4,15,1,5 KR-4/8m KR-4/116m KR-4/314m KR-4/368m KR-4/49m KR-4/759m -, Figure 5: Potential (V/A) in drillhole OL-KR47, current electrodes in drillhole OL-KR4 at 8, 116, 314, 368, 49 and 759 meter depths. Mise-a-la-Masse Survey: Borehole OL-KR48, current electrodes in OL-KR4 1,5 1,5 -,5-1 -1, KR-4/8m KR-4/116m KR-4/314m KR-4/368m KR-4/49m KR-4/759m Figure 6: Potential (V/A) in drillhole OL-KR48, current electrodes in drillhole OL-KR4 at 8, 116, 314, 368, 49 and 759 meter depths.

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35 31 Appendix 1.2: Current electrodes in drillhole OL-KR27 and investigation trench OL-TK13 Mise-a-la-Masse Survey: Borehole OL-KR11, current electrodes in OL-KR27 and at TK-13,1,5 KR-27/338m TK-13/1 TK-13/2 -, Figure 1: Potential (V/A) in drillhole OL-KR11, current electrodes in drillhole OL-KR27 at 338 meter depth and in investigation trench OL-TK13. Mise-a-la-Masse Survey: Borehole OL-KR44, current electrodes in OL-KR27 and at TK-13,1 -,1 -,2 KR-27/338m TK-13/1 TK-13/2 -, Figure 2: Potential (V/A) in drillhole OL-KR44, current electrodes in drillhole OL-KR27 at 338 meter depth and in investigation trench OL-TK13.

36 32 Mise-a-la-Masse Survey: Borehole OL-KR45, current electrodes in OL-KR27 and at TK-13,15,1,5 -,5 KR-27/338m TK-13/1 TK-13/2 -,1 -, Figure 3: Potential (V/A) in drillhole OL-KR45, current electrodes in drillhole OL-KR27 at 338 meter depth and in investigation trench OL-TK13. Mise-a-la-Masse Survey: Borehole OL-KR46, current electrodes in OL-KR27 and at TK-13,1,5 -, KR-27/338m TK-13/1 TK-13/2 Figure 4: Potential (V/A) in drillhole OL-KR46, current electrodes in drillhole OL-KR27 at 338 meter depth and in investigation trench OL-TK13.

37 33 Mise-a-la-Masse Survey: Borehole OL-KR47, current electrodes in OL-KR27 and at TK-13,1,5 -, KR-27/338m TK-13/1 TK-13/2 Figure 5: Potential (V/A) in drillhole OL-KR47, current electrodes in drillhole OL-KR27 at 338 meter depth and in investigation trench OL-TK13.

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39 35 Appendix 1.3: Current electrodes in ONKALO tunnel,1 Mise-a-la-Masse Survey: Borehole OL-KR4, current electrode in ONKALO,5 -,5 PL-285 -, Figure 1: Potential (V/A) in drillhole OL-KR4, current electrode in ONKALO tunnel.,1 Mise-a-la-Masse Survey: Borehole OL-KR27, current electrode in ONKALO,5 -,5 PL-285 -, Figure 2: Potential (V/A) in drillhole OL-KR27, current electrode in ONKALO tunnel.

40 36 Mise-a-la-Masse Survey: Borehole OL-KR42, current electrodes in ONKALO,2,15,1,5 PL-72 PL-159 -,5 -, Figure 3: Potential (V/A) in drillhole OL-KR42, current electrodes in ONKALO tunnel.

41 37 Appendix 1.4: Current electrodes in drillhole OL-KR4 and investigation trench OL-KR14 Drillhole measurements, current electrodes in OL-KR4 Mise-a-la-Masse Survey: Borehole OL-KR4, current electrodes in OL-KR4,5 -,5 -,1 -,15 -,2 -,25 -, KR-4/386m KR-4/41m KR-4/716m KR-4/791m KR-4/968m Figure 1: Potential (V/A) in drillhole OL-KR4, current electrodes in drillhole OL-KR4 at 386, 41, 716, 791 and 968 meters depths.

42 38 Mise-a-la-Masse Survey: Borehole OL-KR11, current electrodes in OL-KR4,5,25 -,25 -,5 KR-4/386m KR-4/41m KR-4/716m KR-4/791m KR-4/968m -,75 -, Figure 2: Potential (V/A) in drillhole OL-KR11, current electrodes in drillhole OL-KR4 at 386, 41, 716, 791 and 968 meters depths. Mise-a-la-Masse Survey: Borehole OL-KR27, current electrodes in OL-KR4,5 -,5 -,1 -,15 -,2 -,25 -, KR-4/386m KR-4/41m KR-4/716m KR-4/791m KR-4/968m Figure 3: Potential (V/A) in drillhole OL-KR27, current electrodes in drillhole OL-KR4 at 386, 41, 716, 791 and 968 meters depths.

43 39 Mise-a-la-Masse Survey: Borehole OL-KR4, current electrodes in OL-KR KR-4/386m KR-4/41m KR-4/716m KR-4/791m KR-4/968m Figure 4: Potential (V/A) in drillhole OL-KR4, current electrodes in drillhole OL-KR4 at 386, 41, 716, 791 and 968 meters depths. Mise-a-la-Masse Survey: Borehole OL-KR44, current electrodes in OL-KR4,2 -,2 -,4 -,6 -,8-1 KR-4/386m KR-4/41m KR-4/716m KR-4/791m KR-4/968m -1,2-1,4-1, Figure 5: Potential (V/A) in drillhole OL-KR44, current electrodes in drillhole OL-KR4 at 386, 41, 716, 791 and 968 meters depths.

44 4 Mise-a-la-Masse Survey: Borehole OL-KR45, current electrodes in OL-KR4,2 -,2 -,4 -,6 -,8-1 KR-4/386m KR-4/41m KR-4/716m KR-4/791m KR-4/968m -1,2-1,4-1, Figure 6: Potential (V/A) in drillhole OL-KR45, current electrodes in drillhole OL-KR4 at 386, 41, 716, 791 and 968 meters depths. Mise-a-la-Masse Survey: Borehole OL-KR46, current electrodes in OL-KR4,5 -,5 -,1 -,15 -,2 -,25 -, KR-4/386m KR-4/41m KR-4/716m KR-4/791m KR-4/968m Figure 7: Potential (V/A) in drillhole OL-KR46, current electrodes in drillhole OL-KR4 at 386, 41, 716, 791 and 968 meters depths.

45 41 Mise-a-la-Masse Survey: Borehole OL-KR47, current electrodes in OL-KR4,5,25 -,25 -,5 KR-4/386m KR-4/41m KR-4/716m KR-4/791m KR-4/968m -,75 -, Figure 8: Potential (V/A) in drillhole OL-KR47, current electrodes in drillhole OL-KR4 at 386, 41, 716, 791 and 968 meters depths.

46 42 Drillhole measurements, current electrode in investigation trench OL-TK14 Mise-a-la-Masse Survey: Borehole OL-KR27, surface current electrode RK1,1,5 -,5 -,1 KR45/RK1 -,15 -, Figure 9: Potential (V/A) in drillhole OL-KR27, current electrode in investigation trench OL-TK14. Mise-a-la-Masse Survey: Borehole OL-KR4, surface current electrode RK1,5 -,5-1 KR45/RK1-1, Figure 1: Potential (V/A) in drillhole OL-KR4, current electrode in investigation trench OL-TK14.

47 43 Mise-a-la-Masse Survey: Borehole OL-KR44, surface current electrode RK1,1,5 -,5 -,1 KR45/RK1 -,15 -, Figure 11: Potential (V/A) in drillhole OL-KR44, current electrode in investigation trench OL-TK14. Mise-a-la-Masse Survey: Borehole OL-KR45, surface current electrode RK1,5 -,5-1 KR45/RK1-1, Figure 12: Potential (V/A) in drillhole OL-KR45, current electrode in investigation trench OL-TK14.

48 44 Surface measurements, current electrodes in OL-KR4 and investigation trench OL-TK14 Mise-a-la-Masse Survey: Line , surface current electrode RK1 -,5-1 -1,5-2 -2,5-3 -3, KR45/RK1 Figure 13: Potential (V/A) on line (northing), current electrodes in investigation trench OL-TK14. Easting is between ( m) (5 m). Mise-a-la-Masse Survey: Line , surface current electrode RK1 -,5-1 -1,5-2 -2,5-3 -3,5-4 KR45/RK Figure 14: Potential (V/A) on line (northing), current electrodes in investigation trench OL-TK14. Easting is between ( m) (5 m).

49 45 Mise-a-la-Masse Survey: Line 67919, surface current electrode RK1 -,5-1 -1,5-2 -2,5-3 -3,5-4 KR45/RK Figure 15: Potential (V/A) on line (northing), current electrodes in investigation trench OL-TK14. Easting is between ( m) (5 m). Mise-a-la-Masse Survey: Line , surface current electrode RK KR45/RK Figure 16: Potential (V/A) on line (northing), current electrodes in investigation trench OL-TK14. Easting is between ( m) (5 m).

50 46 Mise-a-la-Masse Survey: Line , current electrodes in OL-KR4 -,25 -,5 -,75 -,1 KR-4/386m KR-4/41m KR-4/716m KR-4/791m KR-4/968m -,125 -, Figure 17: Potential (V/A) on line (northing), current electrodes in drillhole OL-KR4 at 386, 41, 716, 791 and 968 meter depth. Easting is between ( m) (5 m). Mise-a-la-Masse Survey: Line , surface current electrode RK1 -,5-1 -1,5-2 -2,5-3 -3,5-4 KR45/RK Figure 18: Potential (V/A) on line (northing), current electrodes in investigation trench OL-TK14. Easting is between ( m) (5 m).

51 47 Mise-a-la-Masse Survey: Line , current electrodes in OL-KR4 -,25 -,5 -,75 -,1 KR-4/386m KR-4/41m KR-4/716m KR-4/791m KR-4/968m -,125 -, Figure 19: Potential (V/A) on line (northing), current electrodes in drillhole OL-KR4 at 386, 41, 716, 791 and 968 meter depths. Easting is between ( m) (5 m). Mise-a-la-Masse Survey: Line , surface current electrode RK1 -,5-1 -1,5-2 -2,5-3 -3,5-4 KR45/RK Figure 2: Potential (V/A) on line (northing), current electrodes in investigation trench OL-TK14. Easting is between ( m) (5 m).

52 48 Mise-a-la-Masse Survey: Line 6792, surface current electrode RK1 -,25 -,5 -, ,25-1,5-1,75-2 KR45/RK Figure 21: Potential (V/A) on line 6792 (northing), current electrodes in investigation trench OL-TK14. Easting is between ( m) (5 m).

53 49 Appendix 1.5: Current electrodes in drillhole OL-KR27 and in ONKALO tunnel,1 Mise-a-la-Masse Survey: Line 67215, current electrodes in OL-KR27 and PL-1595,8,6,4,2, -,2 -,4 -,6 -,8 -,1 KR-27/338m PL Figure 1: Potential (V/A) on line (northing), current electrodes in drillhole OL-KR27 at 338 meter depth and in ONKALO tunnel. Easting is between ( m) 1527 (62 m).

54 5,1 Mise-a-la-Masse Survey: Line 6722, current electrodes in OL-KR27 and PL-1595,8,6,4,2, -,2 -,4 -,6 -,8 -,1 KR-27/338m PL Figure 2: Potential (V/A) on line (northing), current electrodes in drillhole OL-KR27 at 338 meter depth and in ONKALO tunnel. Easting is between ( m) (57 m).,1 Mise-a-la-Masse Survey: Line 67225, current electrodes in OL-KR27 and PL-1595,8,6,4,2, -,2 -,4 -,6 -,8 -,1 KR-27/338m PL Figure 3: Potential (V/A) on line (northing), current electrodes in drillhole OL-KR27 at 338 meter depth and in ONKALO tunnel. Easting is between ( m) 1527 (55 m).

55 51,1 Mise-a-la-Masse Survey: Line 6723, current electrodes in OL-KR27 and PL-1595,8,6,4,2, -,2 -,4 -,6 -,8 -,1 KR-27/338m PL Figure 4: Potential (V/A) on line (northing), current electrodes in drillhole OL-KR27 at 338 meter depth and in ONKALO tunnel. Easting is between ( m) 1527 (52 m).,1 Mise-a-la-Masse Survey: Line 67235, current electrodes in OL-KR27 and PL-1595,8,6,4,2, -,2 -,4 -,6 -,8 -,1 KR-27/338m PL Figure 5: Potential (V/A) on line (northing), current electrodes in drillhole OL-KR27 at 338 meter depth and in ONKALO tunnel. Easting is between ( m) 1527 (49 m).

56 52,1 Mise-a-la-Masse Survey: Line 6724, current electrodes in OL-KR27 and PL-1595,8,6,4,2, -,2 -,4 -,6 -,8 -,1 KR-27/338m PL Figure 6: Potential (V/A) on line (northing), current electrodes in drillhole OL-KR27 at 338 meter depth and in ONKALO tunnel. Easting is between ( m) 1527 (52m).,1 Mise-a-la-Masse Survey: Line 67245, current electrodes in OL-KR27 and PL-1595,8,6,4,2, -,2 -,4 -,6 -,8 -,1 KR-27/338m PL Figure 7: Potential (V/A) on line (northing), current electrodes in drillhole OL-KR27 at 338 meter depth and in ONKALO tunnel. Easting is between ( m) 1527 (52m).

57 53,1 Mise-a-la-Masse Survey: Line 6725, current electrodes in OL-KR27 and PL-159,8,6,4,2, KR-27/338m PL-159 -,2 -, Figure 8: Potential (V/A) on line (northing), current electrodes in drillhole OL-KR27 at 338 meter depth and in ONKALO tunnel. Easting is between 1526 ( m) (13 m).,1 Mise-a-la-Masse Survey: Line 67255, current earthings in OL-KR27 and PL-159,8,6,4,2, -,2 -,4 -,6 -,8 -,1 KR-27/338m PL Figure 9: Potential (V/A) on line (northing), current electrodes in drillhole OL-KR27 at 338 meter depth and in ONKALO tunnel. Easting is between 1526 ( m) (125 m).

58 54,1 Mise-a-la-Masse Survey: Line 6726, current electrodes in OL-KR27 and PL-159,8,6,4,2, -,2 -,4 -,6 -,8 -,1 KR-27/338m PL Figure 1: Potential (V/A) on line (northing), current electrodes in drillhole OL-KR27 at 338 meter depth and in ONKALO tunnel. Easting is between ( m) (13 m).,1 Mise-a-la-Masse Survey: Line 67265, current electrodes in OL-KR27 and PL-159,8,6,4,2, -,2 -,4 -,6 -,8 -,1 KR-27/338m PL Figure 11: Potential (V/A) on line (northing), current electrodes in drillhole OL-KR27 at 338 meter depth and in ONKALO tunnel. Easting is between ( m) (94 m).

59 55,1 Mise-a-la-Masse Survey: Line 6727, current electrodes in OL-KR27 and PL-159,8,6,4,2, -,2 -,4 -,6 -,8 -,1 KR-27/338m PL Figure 12: Potential (V/A) on line (northing), current electrodes in drillhole OL-KR27 at 338 meter depth and in ONKALO tunnel. Easting is between ( m) 1527 (84 m).,1 Mise-a-la-Masse Survey: Line 67275, current electrodes in OL-KR27 and PL-159,8,6,4,2, -,2 -,4 -,6 -,8 -,1 KR-27/338m PL Figure 13: Potential (V/A) on line (northing), current electrodes in drillhole OL-KR27 at 338 meter depth and in ONKALO tunnel. Easting is between ( m) 1527 (99 m).

60 56,1 Mise-a-la-Masse Survey: Line 6728, current electrodes in OL-KR27 and PL-159,8,6,4,2, -,2 -,4 -,6 -,8 -,1 KR-27/338m PL Figure 14: Potential (V/A) on line (northing), current electrodes in drillhole OL-KR27 at 338 meter depth and in ONKALO tunnel. Easting is between 1526 ( m) 1527 (1 m).

61 57 Appendix 1.6: Current electrodes in drillhole OL-KR11 Drillhole measurements Mise-a-la-Masse Survey: Borehole OL-KR11, current electrodes in OL-KR KR-11/125m (2) KR-11/13m (2) KR-11/216m (1) KR-11/278m (2) KR-11/35m (1) Figure 1: Potential (V/A) in drillhole OL-KR11, current electrodes in drillhole OL-KR11 at 125, 13, 216, 278 and 35 meter depths. 2 measurements.

62 58 Mise-a-la-Masse Survey: Borehole OL-KR11, current electrodes in OL-KR KR-11/373m (2) KR-11/414m (2) KR-11/418m (2) KR-11/45m (1) KR-11/698m (1) Figure 2: Potential (V/A) in drillhole OL-KR11, current electrodes in drillhole OL-KR11 at 373, 414, 418, 45 and 698 meter depths. 2 measurements. Mise-a-la-Masse Survey: Borehole OL-KR11, current electrodes in OL-KR KR-11/625m (2) KR-11/739m (2) KR-11/895m (1) Figure 3: Potential (V/A) in drillhole OL-KR11, current electrodes in drillhole OL-KR11 at 625, 739 and 895 meter depths. 2 measurements.

63 59 Mise-a-la-Masse Survey: Borehole OL-KR27, current electrodes in OL-KR11,5,25 -,25 -,5 KR-11/125m (2) KR-11/13m (2) KR-11/216m (1) KR-11/278m (2) KR-11/35m (1) -,75 -, Figure 4: Potential (V/A) in drillhole OL-KR27, current electrodes in drillhole OL-KR11 at 125, 13, 216, 278 and 35 meter depths. 2 measurements. Mise-a-la-Masse Survey: Borehole OL-KR27, current electrodes in OL-KR11,5,25 -,25 -,5 -,75 -, KR-11/373m (2) KR-11/414m (2) KR-11/418m (2) KR-11/45m (1) Figure 5: Potential (V/A) in drillhole OL-KR27, current electrodes in drillhole OL-KR11 at 373, 414, 418, and 45 meter depths. 2 measurements.

64 6 Mise-a-la-Masse Survey: Borehole OL-KR27, current electrodes in OL-KR11,5,25 -,25 -,5 KR-11/625m (2) KR-11/698m (1) KR-11/739m (2) KR-11/895m (1) -,75 -, Figure 6: Potential (V/A) in drillhole OL-KR27, current electrodes in drillhole OL-KR11 at 625, 698, 739 and 895 meter depths. 2 measurements. Mise-a-la-Masse Survey: Borehole OL-KR4, current electrodes in OL-KR11,5,25 -,25 -,5 KR-11/125m (1) KR-11/13m (1) KR-11/216m (1) KR-11/278m (2) KR-11/35m (1) -,75 -, Figure 7: Potential (V/A) in drillhole OL-KR4, current electrodes in drillhole OL-KR11 at 125, 13, 216, 278 and 35 meter depths. 2 measurements.

65 61 Mise-a-la-Masse Survey: Borehole OL-KR4, current electrodes in OL-KR11,5,25 -,25 -,5 KR-11/373m (2) KR-11/414m (1) KR-11/418m (2) KR-11/45m (1) -,75 -, Figure 8: Potential (V/A) in drillhole OL-KR4, current electrodes in drillhole OL-KR11 at 373, 414, 418, and 45 meter depths. 2 measurements. Mise-a-la-Masse Survey: Borehole OL-KR4, current electrodes in OL-KR11,5,25 -,25 -,5 -,75 -, KR-11/625m (2) KR-11/698m (1) KR-11/739m (2) KR-11/895m (1) Figure 9: Potential (V/A) in drillhole OL-KR4, current electrodes in drillhole OL-KR11 at 625, 698, 739 and 895 meter depths. 2 measurements.

66 62 Mise-a-la-Masse Survey: Borehole OL-KR42, current electrodes in OL-KR11,5 -,5 -,1 -,15 -,2 -,25 -,3 -,35 -,4 KR-11/125m (1) KR-11/13m (1) KR-11/216m (1) KR-11/278m (2) KR-11/35m (1) Figure 1: Potential (V/A) in drillhole OL-KR42, current electrodes in drillhole OL-KR11 at 125, 13, 216, 278 and 35 meter depths. 2 measurements. Mise-a-la-Masse Survey: Borehole OL-KR42, current electrodes in OL-KR11,5 -,5 -,1 -,15 -,2 -,25 -, KR-11/373m (2) KR-11/414m (2) KR-11/418m (2) KR-11/45m (1) Figure 11: Potential (V/A) in drillhole OL-KR42, current electrodes in drillhole OL-KR11 at 373, 414, 418 and 45 meter depths. 2 measurements.

67 63 Mise-a-la-Masse Survey: Borehole OL-KR42, current electrodes in OL-KR11,5 -,5 -,1 KR-11/625m (2) KR-11/698m (1) KR-11/739m (2) KR-11/895m (1) -,15 -, Figure 12: Potential (V/A) in drillhole OL-KR42, current electrodes in drillhole OL-KR11 at 625, 698, 739 and 895 meter depths. 2 measurements. Mise-a-la-Masse Survey: Borehole OL-KR44, current electrodes in OL-KR11,5 -,5 -,1 -,15 -, KR-11/125m (2) KR-11/13m (2) KR-11/216m (1) KR-11/278m (2) KR-11/35m (1) Figure 13: Potential (V/A) in drillhole OL-KR44, current electrodes in drillhole OL-KR11 at 125, 13, 216, 278 and 35 meter depths. 2 measurements.

68 64 Mise-a-la-Masse Survey: Borehole OL-KR44, current electrodes in OL-KR11,5 -,5 -,1 KR-11/373m (2) KR-11/414m (2) KR-11/418m (2) KR-11/45m (1) -,15 -, Figure 14: Potential (V/A) in drillhole OL-KR44, current electrodes in drillhole OL-KR11 at 373, 414, 418, and 45 meter depths. 2 measurements. Mise-a-la-Masse Survey: Borehole OL-KR44, current electrodes in OL-KR11,5,25 -,25 -,5 -,75 -, KR-11/625m (2) KR-11/698m (1) KR-11/739m (2) KR-11/895m (1) Figure 15: Potential (V/A) in drillhole OL-KR44, current electrodes in drillhole OL-KR11 at 625, 698, 739 and 895 meter depths. 2 measurements.

69 65 Mise-a-la-Masse Survey: Borehole OL-KR45, current electrodes in OL-KR11,5,25 -,25 -,5 KR-11/125m (2) KR-11/13m (2) KR-11/216m (1) KR-11/278m (2) KR-11/35m (1) -,75 -, Figure 16: Potential (V/A) in drillhole OL-KR45, current electrodes in drillhole OL-KR11 at 125, 13, 216, 27 and 35 meter depths. 2 measurements.,5 Mise-a-la-Masse Survey: Borehole OL-KR45, current electrodes in OL-KR11,25 -,25 KR-11/373m (2) KR-11/414m (2) KR-11/418m (2) KR-11/45m (1) -, Figure 17: Potential (V/A) in drillhole OL-KR45, current electrodes in drillhole OL-KR11 at 373, 414, 418 and 45 meter depths. 2 measurements.

70 66 Mise-a-la-Masse Survey: Borehole OL-KR45, current electrodes in OL-KR11,5,25 -,25 -,5 KR-11/625m (2) KR-11/698m (1) KR-11/739m (2) KR-11/895m (1) -,75 -, Figure 18: Potential (V/A) in drillhole OL-KR45, current electrodes in drillhole OL-KR11 at 625, 698, 739 and 895 meter depths. 2 measurements. Mise-a-la-Masse Survey: Borehole OL-KR46, current electrodes in OL-KR11,5 -,5-1 -1,5-2 -2, KR-11/125m (2) KR-11/13m (2) KR-11/216m (1) KR-11/278m (2) KR-11/35m (1) Figure 19: Potential (V/A) in drillhole OL-KR46, current electrodes in drillhole OL-KR11 at 125, 13, 216, 278 and 35 meter depths. 2 measurements.

71 67 Mise-a-la-Masse Survey: Borehole OL-KR46, current electrodes in OL-KR11,5 -,5-1 -1,5 KR-11/373m (2) KR-11/414m (2) KR-11/418m (2) KR-11/45m (1) -2-2, Figure 2: Potential (V/A) in drillhole OL-KR46, current electrodes in drillhole OL-KR11 at 379, 414, 418, and 45 meter depths. 2 measurements. Mise-a-la-Masse Survey: Borehole OL-KR46, current electrodes in OL-KR11,5 -,5 -,1 -,15 -,2 -,25 -, KR-11/625m (2) KR-11/698m (1) KR-11/739m (2) KR-11/895m (1) Figure 21: Potential (V/A) in drillhole OL-KR46, current electrodes in drillhole OL-KR11 at 625, 698, 739 and 895 meter depths. 2 measurements.

72 68 Mise-a-la-Masse Survey: Borehole OL-KR47, current electrodes in OL-KR11,5,25 -,25 -,5 KR-11/125m (2) KR-11/13m (2) KR-11/216m (1) KR-11/278m (2) KR-11/35m (1) -,75 -, Figure 22: Potential (V/A) in drillhole OL-KR47, current electrodes in drillhole OL-KR11 at 125, 13, 216, 278 and 35 meter depths. 2 measurements. Mise-a-la-Masse Survey: Borehole OL-KR47, current electrodes in OL-KR11,5,25 -,25 -,5 KR-11/373m (2) KR-11/414m (2) KR-11/418m (2) KR-11/45m (1) -,75 -, Figure 23: Potential (V/A) in drillhole OL-KR47, current electrodes in drillhole OL-KR11 at 373, 414, 418 and 45 meter depths. 2 measurements.

73 69 Mise-a-la-Masse Survey: Borehole OL-KR47, current electrodes in OL-KR11,5 -,5 -,1 KR-11/625m (2) KR-11/698m (1) KR-11/739m (2) KR-11/895m (1) -,15 -, Figure 24: Potential (V/A) in drillhole OL-KR47, current electrodes in drillhole OL-KR11 at 625, 698, 739 and 895 meter depths. 2 measurements.

74 7 Surface measurements Mise-a-la-Masse Survey: Line , current electrodes in OL-KR11,5 -,5 KR-11/216m KR-11/35m KR-11/414m KR-11/45m KR-11/698m KR-11/895m -, Figure 25: Potential (V/A) on line , current electrodes in drillhole OL-KR11 at 216, 35, 414, 45, 698 and 895 meter depths. Easting is between ( m) 1527 (62 m). Mise-a-la-Masse Survey: Line 67922, current electrodes in OL-KR11,5 -,5 -, KR-11/216m (1) KR-11/216m (2) KR-11/35m (1) KR-11/35m (2) KR-11/45m (1) KR-11/45m (2) KR-11/414m (1) KR-11/414m (2) KR-11/698m (1) KR-11/698m (2) KR-11/895m (1) KR-11/895m (2) Figure 26: Potential (V/A) on line 67922, current electrodes in drillhole OL-KR11 at 216, 35, 414, 45, 698 and 895 meter depths. Easting is between ( m) 1527 (62 m). 2 measurements.

75 71 Mise-a-la-Masse Survey: Line , current electrodes in OL-KR11,5 -,5 KR-11/216m KR-11/35m KR-11/414m KR-11/45m KR-11/698m KR-11/895m -, Figure 27: Potential (V/A) on line , current electrodes in drillhole OL-KR11 at 216, 35, 414, 45, 698 and 895 meter depths. Easting is between ( m) 1527 (55 m). Mise-a-la-Masse Survey: Line 67923, current electrodes in OL-KR11,5 -,5 -,1 -, KR-11/216m KR-11/35m KR-11/414m KR-11/45m KR-11/698m KR-11/895m Figure 28: Potential (V/A) on line 67923, current electrodes in drillhole OL-KR11 at 216, 35, 414, 45, 698 and 895 meter depths. Easting is between ( m) 1527 (52 m).

76 72 Mise-a-la-Masse Survey: Line , current electrodes in OL-KR11,5 -,5 -,1 KR-11/216m KR-11/35m KR-11/414m KR-11/45m KR-11/698m KR-11/895m -, Figure 29: Potential (V/A) on line , current electrodes in drillhole OL-KR11 at 216, 35, 414, 45, 698 and 895 meter depths. Easting is between ( m) 1527 (49 m). Mise-a-la-Masse Survey: Line 67924, current electrodes in OL-KR11,5 -,5 -,1 -, KR-11/216m KR-11/35m KR-11/414m KR-11/45m KR-11/698m KR-11/895m Figure 3: Potential (V/A) on line 67924, current electrodes in drillhole OL-KR11 at 216, 35, 414, 45, 698 and 895 meter depths. Easting is between ( m) 1527 (52 m).

77 73 Mise-a-la-Masse Survey: Line , current electrodes in OL-KR11,1 -,1 -,2 -,3 KR-11/125m (2) KR-11/13m (2) KR-11/216m (1) KR-11/278m (2) KR-11/35m (1) -,4 -, Figure 31: Potential (V/A) on line , current electrodes in drillhole OL-KR11 at 125, 13, 216, 278 and 35 meter depths. Easting is between ( m) 1527 (52 m). 2 measurements.,5 Mise-a-la-Masse Survey: Line , current electrodes in OL-KR11 -,5 -,1 -, KR-11/373m (2) KR-11/414m (2) KR-11/418m (2) KR-11/45m (1) Figure 32: Potential (V/A) on line , current electrodes in drillhole OL-KR11 at 373, 414, 418 and 45 meter depths. Easting is between ( m) 1527 (52 m). 2 measurements.

78 74 Mise-a-la-Masse Survey: Line , current electrodes in OL-KR11,5 -,5 KR-11/625m (2) KR-11/698m (1) KR-11/739m (2) KR-11/895m (1) -, Figure 33: Potential (V/A) on line , current electrodes in drillhole OL-KR11 at 625, 698, 739 and 895 meter depths. Easting is between ( m) 1527 (52 m). 2 measurements. Mise-a-la-Masse Survey: Line 67925, current electrodes in OL-KR11,1 -,1 -,2 -,3 -,4 -, KR-11/125m (2) KR-11/13m (2) KR-11/216m (1) KR-11/278m (2) KR-11/35m (1) Figure 34: Potential (V/A) on line 67925, current electrodes in drillhole OL-KR11 at 125, 13, 216, 278 and 35 meter depths. Easting is between 1526 ( m) (13 m). 2 measurements.

79 75 Mise-a-la-Masse Survey: Line 67925, current electrodes in OL-KR11,5 -,5 -,1 KR-11/373m (2) KR-11/414m (2) KR-11/418m (2) KR-11/45m (1) -, Figure 35: Potential (V/A) on line 67925, current electrodes in drillhole OL-KR11 at 373, 414, 418 and 45 meter depths. Easting is between 1526 ( m) (13 m).2 measurements. Mise-a-la-Masse Survey: Line 67925, current electrodes in OL-KR11,5 -,5 -, KR-11/625m (2) KR-11/698m (1) KR-11/739m (2) KR-11/895m (1) Figure 36: Potential (V/A) on line 67925, current electrodes in drillhole OL-KR11 at 625, 698, 739 and 895 meter depths. Easting is between 1526 ( m) (13 m). 2 measurements.

80 76 Mise-a-la-Masse Survey: Line , current electrodes in OL-KR11,1 -,1 -,2 -,3 KR-11/125m (2) KR-11/13m (2) KR-11/216m (1) KR-11/278m (2) KR-11/35m (1) -,4 -, Figure 37: Potential (V/A) on line , current electrodes in drillhole OL-KR11 at 125, 13, 216, 278 and 35 meter depths. Easting is between 1526 ( m) (125 m). 2 measurements. Mise-a-la-Masse Survey: Line , current electrodes in OL-KR11,1 -,1 -, KR-11/373m (2) KR-11/414m (2) KR-11/418m (2) KR-11/45m (1) Figure 38: Potential (V/A) on line , current electrodes in drillhole OL-KR11 at 373, 414, 418 and 45 meter depths. Easting is between 1526 ( m) (125 m). 2 measurements.

81 77 Mise-a-la-Masse Survey: Line , current electrodes in OL-KR11,5 -,5 KR-11/625m (2) KR-11/698m (1) KR-11/739m (2) KR-11/895m (1) -, Figure 39: Potential (V/A) on line , current electrodes in drillhole OL-KR11 at 625, 698, 739 and 895 meter depths. Easting is between 1526 ( m) (125 m). 2 measurements. Mise-a-la-Masse Survey: Line 67926, current electrodes in OL-KR11,5 -, KR-11/125m (2) KR-11/13m (2) KR-11/216m (1) KR-11/278m (2) KR-11/35m (1) Figure 4: Potential (V/A) on line 67926, current electrodes in drillhole OL-KR11 at 125, 13, 216, 278 and 35 meter depths. Easting is between ( m) (13 m). 2 measurements.

82 78 Mise-a-la-Masse Survey: Line 67926, current electrodes in OL-KR11,1 -,1 KR-11/373m (2) KR-11/414m (2) KR-11/418m (2) KR-11/45m (1) -, Figure 41: Potential (V/A) on line 67926, current electrodes in drillhole OL-KR11 at 373, 414, 418 and 45 meter depths. Easting is between ( m) (13 m). 2 measurements. Mise-a-la-Masse Survey: Line 67926, current electrodes in OL-KR11,5 -,5 -, KR-11/625m (2) KR-11/698m (1) KR-11/739m (2) KR-11/895m (1) Figure 42: Potential (V/A) on line , current electrodes in drillhole OL-KR11 at 625, 698, 739 and 895 meter depths. Easting is between ( m) (13 m). 3 measurements.

83 79 Mise-a-la-Masse Survey: Line , current electrodes in OL-KR11,5 -,5 KR-11/125m (2) KR-11/125m (3) KR-11/13m (2) KR-11/13m (3) KR-11/216m (1) KR-11/278m (2) KR-11/278m (3) KR-11/35m (1) Figure 43: Potential (V/A) on line , current electrodes in drillhole OL-KR11 at 125, 13, 216, 278 and 35 meter depths. Easting is between ( m) (94 m). 3 measurements. Mise-a-la-Masse Survey: Line , current electrodes in OL-KR11,1 -,1 -,2 -,3 -,4 -, KR-11/373m (2) KR-11/373m (3) KR-11/414m (1) KR-11/414m (2) KR-11/414m (3) KR-11/418m (2) KR-11/418m (3) KR-11/45m (1) Figure 44: Potential (V/A) on line , current electrodes in drillhole OL-KR11 at 373, 414, 418 and 45 meter depths. Easting is between ( m) (94 m). 3 measurements.

84 8 Mise-a-la-Masse Survey: Line , current electrodes in OL-KR11,5 -,5 KR-11/625m (2) KR-11/625m (3) KR-11/698m (1) KR-11/739m (2) KR-11/739m (3) KR-11/895m (1) -, Figure 45: Potential (V/A) on line , current electrodes in drillhole OL-KR11 at 625, 698, 739 and 895 meter depths. Easting is between ( m) (94 m). 3 measurements. Mise-a-la-Masse Survey: Line 67927, current electrodes in OL-KR11,5 -, KR-11/125m (2) KR-11/13m (2) KR-11/216m (1) KR-11/278m (2) KR-11/35m (1) Figure 46: Potential (V/A) on line 67927, current electrodes in drillhole OL-KR11 at 125, 13, 216, 278 and 35 meter depths. Easting is between ( m) 1527 (84 m). 2 measurements.

85 81 Mise-a-la-Masse Survey: Line 67927, current electrodes in OL-KR11,1 -,1 -,2 -,3 KR-11/373m (2) KR-11/414m (2) KR-11/418m (2) KR-11/45m (1) -,4 -, Figure 47: Potential (V/A) on line 67927, current electrodes in drillhole OL-KR11 at 373, 414, 418 and 45 meter depths. Easting is between ( m) 1527 (84 m). 2 measurements. Mise-a-la-Masse Survey: Line 67927, current electrodes in OL-KR11,5 -,5 KR-11/625m (2) KR-11/698m (1) KR-11/739m (2) KR-11/895m (1) -, Figure 48: Potential (V/A) on line 67927, current electrodes in drillhole OL-KR11 at 625, 698, 739 and 895 meter depths. Easting is between ( m) 1527 (84 m). 2 measurements.

86 82 Mise-a-la-Masse Survey: Line , current electrodes in OL-KR11,5 KR-11/125m (2) KR-11/125m (3) KR-11/125m (4) -,5 KR-11/13m (2) KR-11/13m (3) KR-11/13m (4) KR-11/216m (1) KR-11/278m (2) KR-11/278m (3) KR-11/278m (4) KR-11/35m (1) Figure 49: Potential (V/A) on line , current electrodes in drillhole OL-KR11 at 125, 13, 216, 278 and 35 meter depths. Easting is between ( m) 1527 (162 m). 4 measurements. Mise-a-la-Masse Survey: Line , current electrodes in OL-KR11,1 -,1 -,2 -,3 -,4 -, KR-11/373m (2) KR-11/373m (3) KR-11/373m (4) KR-11/414m (2) KR-11/414m (3) KR-11/414m (4) KR-11/418m (2) KR-11/418m (3) KR-11/418m (4) KR-11/45m (1) Figure 5: Potential (V/A) on line , current electrodes in drillhole OL-KR11 at 373, 414, 418 and 45 meter depths. Easting is between ( m) 1527 (162 m). 4 measurements.

87 83 Mise-a-la-Masse Survey: Line , current electrodes in OL-KR11,5 -,5 KR-11/625m (2) KR-11/625m (3) KR-11/625m (4) KR-11/698m (1) KR-11/739m (2) KR-11/739m (3) KR-11/739m (4) KR-11/895m (1) -, Figure 51: Potential (V/A) on line , current electrodes in drillhole OL-KR11 at 625, 698, 739 and 895 meter depths. Easting is between ( m) 1527 (162 m). 4 measurements Mise-a-la-Masse Survey: Line 67928, currentelectrodes in OL-KR11,5 -, KR-11/125m (2) KR-11/125m (3) KR-11/13m (2) KR-11/13m (3) KR-11/216m (1) KR-11/278m (2) KR-11/278m (3) KR-11/35m (1) Figure 52: Potential (V/A) on line 67928, current electrodes in drillhole OL-KR11 at 125, 13, 216, 278 and 35 meter depths. Easting is between ( m) 1527 (16 m). 3 measurements.

88 84 Mise-a-la-Masse Survey: Line 67928, current electrodes in OL-KR11,1 -,1 -,2 -,3 -,4 KR-11/373m (2) KR-11/373m (3) KR-11/414m (2) KR-11/414m (3) KR-11/418m (2) KR-11/418m (3) KR-11/45m (1) -, Figure 53: Potential (V/A) on line 67928, current electrodes in drillhole OL-KR11 at 373, 414, 418 and 45 meter depths. Easting is between is ( m) 1527 (16 m). 3 measurements. Mise-a-la-Masse Survey: Line 67928, current electrodes in OL-KR11,5 -,5 -, KR-11/625m (2) KR-11/625m (3) KR-11/698m (1) KR-11/739m (2) KR-11/739m (3) KR-11/895m (1) Figure 54: Potential (V/A) on line 67928, current electrodes in drillhole OL-KR11 at 625, 698, 739 and 895 meter depths. Easting is between ( m) 1527 (16 m). 3 measurements.

89 85 Mise-a-la-Masse Survey: Line , current electrodes in OL-KR11,1 -,1 -,2 -,3 KR-11/125m KR-11/13m KR-11/278m KR-11/373m -,4 -, Figure 55: Potential (V/A) on line , current electrodes in drillhole OL-KR11 at 125, 13, 278 and 373 meter depths. Easting is between ( m) (155 m). Mise-a-la-Masse Survey: Line , current electrodes in OL-KR11,1 -,1 -,2 -,3 -,4 -, KR-11/414m KR-11/418m KR-11/625m KR-11/739m Figure 56: Potential (V/A) on line , current electrodes in drillhole OL-KR11 at 414, 418, 625 and 739 meter depths. Easting is between ( m) (165 m).

90 86 Mise-a-la-Masse Survey: Line 67929, current electrodes in OL-KR11,1 -,1 -,2 -,3 -,4 KR-11/125m (1) KR-11/125m (2) KR-11/13m (1) KR-11/13m (2) KR-11/278m (1) KR-11/278m (2) KR-11/373m (1) KR-11/373m (2) -, Figure 57: Potential (V/A) on line 67929, current electrodes in drillhole OL-KR11 at 125, 13, 278 and 373 meter depths. Easting is between 1526 ( m) (95 m).2 measurements. Mise-a-la-Masse Survey: Line 67929, current electrodes in OL-KR11,1 -,1 -,2 -,3 -,4 -, KR-11/414m (1) KR-11/414m (2) KR-11/418m (1) KR-11/418m (2) KR-11/625m (1) KR-11/625m (2) KR-11/739m (1) KR-11/739m (2) Figure 58: Potential (V/A) on line 67929, current electrodes in drillhole OL-KR11 at 414, 418, 625 and 739 meter depths. Easting is between 1526 ( m) (95 m). 2 measurements.

91 87 Mise-a-la-Masse Survey: Line , current electrodes in OL-KR11,1 -,1 -,2 -,3 -,4 KR-11/125m (1) KR-11/125m (2) KR-11/13m (1) KR-11/13m (2) KR-11/278m (1) KR-11/278m (2) KR-11/373m (1) KR-11/373m (2) -, Figure 59: Potential (V/A) on line , current electrodes in drillhole OL-KR11 at 125, 13, 278 and 373 meter depths. Easting is between 1526 ( m) (95 m).2 measurements. Mise-a-la-Masse Survey: Line , current electrodes in OL-KR11,1 -,1 -,2 -,3 -,4 -, KR-11/414m (1) KR-11/414m (2) KR-11/418m (1) KR-11/418m (2) KR-11/625m (1) KR-11/625m (2) KR-11/739m (1) KR-11/739m (2) Figure 6: Potential (V/A) on line , current electrodes in drillhole OL-KR11 at 414, 418, 625 and 739 meter depths. Easting is between 1526 ( m) (95 m). 2 measurements.

92 88 Mise-a-la-Masse Survey: Line 6793, current electrodes in OL-KR11,1 -,1 -,2 -,3 KR-11/125m KR-11/13m KR-11/278m KR-11/373m -,4 -, Figure 61: Potential (V/A) on line 6793, current electrodes in drillhole OL-KR11 at 125, 13, 278 and 373 meter depths. Easting is between 1526 ( m) (94 m). Mise-a-la-Masse Survey: Line 6793, current electrodes in OL-KR11,1 -,1 -,2 -,3 KR-11/414m KR-11/418m KR-11/625m KR-11/739m -,4 -, Figure 62: Potential (V/A) on line 6793, current electrodes in drillhole OL-KR11 at 414, 418, 625 and 739 meter depths. Easting is between 1526 ( m) (94 m).

93 89 Mise-a-la-Masse Survey: Line 67935, current electrodes in OL-KR11,1 -,1 -,2 -,3 KR-11/125m KR-11/13m KR-11/278m KR-11/373m -,4 -, Figure 63: Potential (V/A) on line 67935, current electrodes in drillhole OL-KR11 at 125, 13, 278 and 373 meter depths. Easting is between 1526 ( m) (93 m). Mise-a-la-Masse Survey: Line 67935, current electrodes in OL-KR11,1 -,1 -,2 -,3 KR-11/414m KR-11/418m KR-11/625m KR-11/739m -,4 -, Figure 64: Potential (V/A) on line 67935, current electrodes in drillhole OL-KR11 at 414, 418, 625 and 739 meter depths. Easting is between 1526 ( m) (93 m).

94 9 Mise-a-la-Masse Survey: Line 67931, current electrodes in OL-KR11,1 -,1 -,2 -,3 KR-11/125m KR-11/13m KR-11/278m KR-11/373m -,4 -, Figure 65: Potential (V/A) on line 67931, current electrodes in drillhole OL-KR11 at 125, 13, 278 and 373 meter depths. Easting is between 1526 ( m) (93 m). Mise-a-la-Masse Survey: Line 67931, current electrodes in OL-KR11,1 -,1 -,2 -,3 KR-11/414m KR-11/418m KR-11/625m KR-11/739m -,4 -, Figure 66: Potential (V/A) on line 67931, current electrodes in drillhole OL-KR11 at 414, 418, 625 and 739 meter depths. Easting is between 1526 ( m) (93 m).

95 Appendix 2: ABEM Terrameter SAS 91