Landau Colliery DWA Quarterly Report No. 5 April to June 2013 ANGLO AMERICAN THERMAL COAL LANDAU COLLIERY Department of Water Affairs (DWA) Quarterly Report No. 2 1 st April 30 th June 2013 1
Table of Contents 1. INTRODUCTION... 5 2. LANDAU COLLIERY DESCRIPTION... 5 3. MONITORING PROGRAM... 5 3.1. GROUNDWATER MONITORING PROGRAMME... 5 3.1.1 Kromdraai... 5 3.1.2. Navigation... 7 3.1.3 Groundwater monitoring Conclusion... 9 3.2. SURFACE WATER MONITORING... 9 3.2.1 Kromdraai Pollution Control Dams (PCD)... 9 3.2.2 Navigation Pollution Control Dams (PCD)... 11 3.2.3 PCDs Conclusion... 14 3.2.4 Water Discharged at the Kromdraai Liming Plant... 14 3.2.5 Liming Plant discharge Conclusion... 15 3.2.6 River and Stream Monitoring... 16 4. WATER STORAGE... 16 5. ABSTRACTION VOLUME... 17 6. APPENDIX 1: MAPS... 19 7. APPENDIX 2: GROUNDWATER QUALITY RESULTS... 24 8. APPENDIX 3: SURFACE WATER QUALITY RESULTS... 41 9. APPENDIX 4: GROUNDWATER MONITORING BOREHOLES: QUALITY RESULTS IN TABLES... 50 10. APPENDIX 5: GROUNDWATER MONITORING BOREHOLES: LEVELS... 56 List of Figures FIGURE 1: GROUNDWATER MONITORING LOCATIONS FOR THE KROMDRAAI SECTION OF LANDAU COLLIERY... 6 FIGURE 2: MONTHLY GROUNDWATER MONITORING POINTS AT NAVIGATION SECTION OF LANDAU COLLIERY... 7 FIGURE 3: LOCATION OF POLLUTION CONTROL DAMS AT THE KROMDRAAI SECTION... 10 FIGURE 4: LOCATION OF THE PCDS AT THE NAVIGATION SECTION... 12 FIGURE 5: LIMING PLANT AT KROMDRAAI. (FOR LOCATION REFER TO APPENDIX 1, FIGURE 6 9)... 14 FIGURE 6: LOCALITY MAP FOR LANDAU COLLIERY... 19 FIGURE 7: CATCHMENT BOUNDARIES RELEVANT TO LANDAU COLLIERY... 20 FIGURE 8: LAYOUT MAP FOR KROMDRAAI SECTION... 21 FIGURE 9: LAYOUT MAP FOR NAVIGATION SECTION... 22 FIGURE 10: SURFACE AND GROUNDWATER MONITORING POINTS... 24
List of Tables TABLE 1: KROMDRAAI PH TABLES... 6 TABLE 2: NAVIGATION PH RESULTS... 7 TABLE 3: NAVIGATION SULPHATE RESULTS... 8 TABLE 4: NAVIGATION TDS RESULTS... 9 TABLE 5: KROMDRAAI PCD WATER QUALITY LIMITS AS PER IWUL VALUES MAY NOT BE EXCEEDED... 10 TABLE 6: NAVIGATION PCD WATER QUALITY LIMITS AS PER IWUL VALUES MAY NOT TO BE EXCEEDED... 13 TABLE 7: LIMING PLANT DISCHARGE LIMITS AS PER IWUL... 15 TABLE 8: NAVIGATION VOLUMES OF WATER STORED IN THE DAMS AT THE END OF EACH MONTH PERIOD.... 16 TABLE 9: KROMDRAAI VOLUMES OF WATER STORED IN THE DAMS AT THE END OF EACH MONTH... 17 TABLE 10: KROMDRAAI GROUNDWATER MONITORING BOREHOLE RESULTS... 50 TABLE 11: NAVIGATION GROUNDWATER MONITORING BOREHOLE RESULTS... 53 TABLE 12: GROUNDWATER MONITORING BOREHOLE LEVELS... 56 List of Graphs GRAPHS 1: PH RESULTS KROMDRAAI (3)... 25 GRAPHS 2: TDS RESULTS KROMDRAAI (3)... 25 GRAPHS 3: SULPHATE RESULTS KROMDRAAI (3)... 26 GRAPHS 4: CHLORIDE RESULTS KROMDRAAI (3)... 27 GRAPHS 5: SODIUM RESULTS KROMDRAAI (3)... 28 GRAPHS 6: IRON RESULTS KROMDRAAI (3)... 29 GRAPHS 7: ALUMINIUM RESULTS KROMDRAAI (3)... 30 GRAPHS 8: FLOURIDE RESULTS KROMDRAAI (3)... 31 GRAPHS 9: PH RESULTS NAVIGATION (3)... 32 GRAPHS 10: SULPHATE RESULTS NAVIGATION (3)... 33 GRAPHS 11: TDS RESULTS NAVIGATION (3)... 34 GRAPHS 12: IRON RESULTS NAVIGATION (3)... 35 GRAPHS 13: CHLORIDE RESULTS NAVIGATION... 36 GRAPHS 14: SODIUM RESULTS NAVIGATION... 37 GRAPHS 15: ALUMINIUM RESULTS NAVIGATION... 38 GRAPHS 16: FLUORIDE RESULTS NAVIGATION (3)... 39 GRAPHS 17: PH RESULTS PCD KROMDRAAI... 41 GRAPHS 18: TEMPERATURE RESULTS PCD KROMDRAAI... 41
GRAPHS 19: ALUMINIUM RESULTS PCD KROMDRAAI... 41 GRAPHS 20: CHLORIDE RESULTS PCD KROMDRAAI... 42 GRAPHS 21: IRON RESULTS PCD KROMDRAAI... 42 GRAPHS 22: SODIUM RESULTS PCD KROMDRAAI... 42 GRAPHS 23: POTASSIUM RESULTS PCD KROMDRAAI... 42 GRAPHS 24: SULPHATE RESULTS PCD KROMDRAAI... 43 GRAPHS 25: TOTAL DISSOLVED SOLIDS RESULTS PCD KROMDRAAI... 43 GRAPHS 26: CALCIUM RESULTS PCD KROMDRAAI... 44 GRAPHS 27: MAGNESIUM RESULTS PCD KROMDRAAI... 44 GRAPHS 28: PH RESULTS PCD NAVIGATION... 44 GRAPHS 29: TEMPERATURE RESULTS PCD NAVIGATION... 44 GRAPHS 30: ALUMINIUM RESULTS PCD NAVIGATION... 45 GRAPHS 31: CHLORIDE RESULTS PCD NAVIGATION... 45 GRAPHS 32: IRON RESULTS PCD NAVIGATION... 45 GRAPHS 33: SODIUM RESULTS PCD NAVIGATION... 46 GRAPHS 34: POTASSIUM RESULTS PCD NAVIGATION... 46 GRAPHS 35: SULPHATE RESULTS PCD NAVIGATION... 46 GRAPHS 36: TOTAL DISSOLVED SOLIDS PCD NAVIGATION... 47 GRAPHS 37: CALCIUM RESULTS PCD NAVIGATION... 47 GRAPHS 38: MAGNESIUM RESULTS PCD NAVIGATION... 47 GRAPHS 39: PH RESULTS LIMING PLANT... 48 GRAPHS 40: TDS RESULTS LIMING PLANT... 48 GRAPHS 41: SULPHATE RESULTS LIMING PLANT... 48 GRAPHS 42: CHLORIDE RESULTS LIMING PLANT... 49 GRAPHS 43: SODIUM RESULTS LIMING PLANT... 49 GRAPHS 44: FLUORIDE RESULTS LIMING PLANT... 49
ANGLO AMERICAN THERMAL COAL: LANDAU COLLIERY DWA QUARTERLY REPORT No. 2 1 st April 30th June 2013 1. INTRODUCTION This report summarises water related activities and monitoring results at the Anglo American Thermal Coal Landau Colliery for the second quarter, from April to June 2013. The report is prepared in accordance with conditions in the two Integrated Water Use Licenses issued to Landau Colliery by the Director General of the Department of Water Affairs on the 25 th and 26 th of January 2012. Details of the licenses are provided in the table below. Kromdraai Navigation License Number 04/B20G/ABCFGIJ/1245 04/B20G/ABCGIJ/1498 File Number 16/2/7/B100/C101 16/2/7/B100/C252 2. LANDAU COLLIERY DESCRIPTION Landau Colliery is a business unit of Anglo American Thermal Coal, a Division of Anglo American, and consists of two sections, namely the Kromdraai Section and the Navigation Section. Landau Colliery is situated in the Emalahleni Local Municipality, which falls in the Nkangala District Municipality. The Kromdraai Section is situated 15 km north-west of Emalahleni (formerly known as Witbank) and the Navigation Section is situated 6 km south-west of Emalahleni (refer to Appendix 1, Figures 6-10). Figure 6 in Appendix 1 included in section 6 of this report provides a locality map of the Colliery indicating the various sections. Figure 7 in Appendix 1 indicates the relevant catchment boundaries and Figures 8 and 9 show the surface infrastructure related to the two sections. 3. MONITORING PROGRAM In accordance with the approved EMPR, Landau Colliery has implemented a comprehensive water monitoring program. The program is regulated through the procedure LIMS_OP_003.3.8 and covers both surface and groundwater monitoring. Surface water monitoring locations are provided in Figure 10 in Appendix 1. In addition, a quarterly stream profile for all impacted rivers and streams is conducted by a third party Aquatico Sceintific. This report shall be submitted as an attachment to this quarterly report. 3.1. GROUNDWATER MONITORING PROGRAMME A comprehensive monthly ground water monitoring program is conducted at Landau Colliery. Both borehole levels and water quality is determined. The quality results from selected boreholes, selected based on risk, will be presented and discussed in detail in the following sections. The full monitoring results will also be provided in Appendix 2 for Groundwater Quality Results (Graphs), Appendix 3 for Surface Water Quality Results (Graphs), Appendix 4 for Water Results Tables and Appendix 5 for Borehole Water Levels. 3.1.1 Kromdraai All groundwater monitoring sites are sampled on a monthly basis and samples sent for laboratory analysis. Compliance is measured against the SANS Class 2 drinking water standard. The results discussed below are of those samples which are not compliant to the standard. Groundwater monitoring locations for the Kromdraai section are shown in Figure 1 below.
Figure 1: Groundwater monitoring locations for the Kromdraai section of Landau Colliery ph Results Samples in 18 locations were taken to assess the levels of ph in groundwater. Out of the 18 samples5 were below the ph lower limit of 5 in this second quarter of 2013. All other samples remained within historic ranges and no significant deviations were recorded during the reporting period. The results are discussed in table 1 below. Table 1: Kromdraai ph Tables Samples Result (Average Q2) Reason KRW014 KRW024 and 4.12 and 4.17 KRW014 and KRW024 are located at the northern boundaries of Kromdraai where they are mostly affected by external old defunct mines. The ph is expected to remain at this low levels until the dewatering project to pump out all the acidic water has commenced. KRW029 3.8 This borehole is located at the edge of the opencast area where water is highly acidic due to previous and current mining activities. Water in this area is pumped out and sent to the liming plant for treatment. KRW034, and 39 3.5 and4.7, These boreholes are located in the old underground workings where water is highly acidic. This water is currently dewatered to the liming plant for treatment. Over the reporting period ph remained stable in these monitoring holes except in the case of KRW040 where a ph of 5.9 was recorded in the final month of Quarter 1. The ph has stabled at 5 for the past three months of this
Samples Result (Average Q2) Reason quarter and hence KRW040 is not included in the list of the samples recording exceedences. Three graphs have been drawn up to indicate the ph results and these can be viewed in Appendix 2 (A. Kromdraai Graphs Not Compliant to SANS 2 Drinking water standards) No other monitoring locations exceeded the limits at Kromdraai for all other groundwater parameters in terms of the SANS water quality standards. The results can be viewed in graphs and tables listed in Appendix 2 (B. Kromdraai Graphs Compliant to SANS 2 Drinking water standards). 3.1.2. Navigation All groundwater monitoring sites are measured on a monthly basis and samples are sent for laboratory analysis. Compliance is measured against the SANS Class 2 drinking water standard. Results discussed below are of those samples not compliant to the standards. The discussion will provide information on accidences and reasons thereof. Groundwater monitoring locations for the Navigation section are shown in Figure 2 below. Figure 2: Monthly groundwater monitoring points at Navigation Section of Landau Colliery ph Results Samples in 23 locations were taken to assess the levels of ph in groundwater. Out of the 23 samples only 4 were below the ph lower limit of 5, and thus are not compliant to the SANS drinking water standards. The results are discussed in table 2 below. Table 2: Navigation ph Results
Samples 2S5, 2S6 and NAV201 Result (Average Q4) 4.33, 3.64 and 3.39 Reason These boreholes are located at the Schoongezicht old underground workings. The water in these underground workings is highly acidic and decants into Schoonie Dam. It is then pumped to the Navigation Liming Plant and Emalahleni Water Reclamation Plant for treatment. 2S5 has had historic good ph levels averaging at 5.5, however there has been a decline in ph levels since January 2013. This could be an indication of pollution plume developing. SPC007 2.36 This borehole is located adjacent the Blaauwkraans Toe Seep where acidic seepage water is collected and pumped back to the liming plant for treatment. Three graphs have been drawn up to indicate the ph results and these can be viewed in Appendix 2 (C. Navigation Graphs Not Compliant to SANS 2 Drinking water standards) Sulphate (SO 4 2- ) Results 2- Samples in 23 locations were taken to assess the levels of SO 4 in groundwater. Out of the 23 samples only 5 were above the SANS limit of 500, and thus are not compliant to the SANS drinking water standards. An improvement has been noted on sample NAW003. The results are discussed in table 3 below. Table 3: Navigation Sulphate Results Samples Result (Average Q4) Reason 2S6 and NAV201 664.17 and 1654.67 Both boreholes are within the old underground workings in this area that decant into the Schoonie PCD and is subsequently pumped to the Navigation Liming Plant and Emalahleni Water Reclamation Plant for treatment. The high sulphate levels are indicative of AMD. SPC002 and 3 628 and609.73 Both these boreholes are located at the boundaries of Blaauwkrans co-disposal facility. They may be affected by the pollution plume from the co-disposal facility which will be characteristic of AMD. SPC002 sulphate content decreased in March through to May and increased again in the month of June. This will continuously be monitored for a better understanding of the results SPC007 2566.67 As noted above, this borehole is located adjacent the Blaauwkraans Toe Seep where acidic seepage water is collected and pumped back to the liming plant. There s a sharp increase in sulphate content Graphs presenting the SO 4 2 monitoring results be viewed in Appendix 2 (C. Navigation Graphs Not Compliant to SANS 2 Drinking water standards).
Total Dissolved Salts (TDS) Results Samples in 23 locations were taken to assess the levels of TDS in groundwater. Out of the 23 samples only 2 were above the SANS limit of 1200, and thus are not compliant to the SANS drinking water standards. Sample NAW003, has shown a significant improvement in both sulphate content and TDS and has registered below the SANS limit in this quarter. The rest of the results are discussed in table 3 below. Table 4: Navigation TDS Results Samples Result (Average Q4) Reason NAV201 2542 Sample 2S6 TDS content has decreased and is below the limit of 1200. Historical underground mining is the result of this high TDS at NAV201, also linked to the low ph and high sulphate content indicated in Tables 2 and 3 above. SPC007 4537.33 As noted above, this borehole is located adjacent the Blaauwkrans Toe Seep where acidic seepage water is collected and pumped back to the liming plant for treatment. The sharp increase in salt content is noted, and there will be continued monitoring to better understand the impacts. The graphs representing the TDS results can be viewed in Appendix 2 (B. Graphs Not compliant to SANS 2 drinking water standards) These were the only 3 parameters that exceeded the standard limits. All other parameters were within the SANS drinking water standard limits. The graphs and tables for all other parameters may be viewed in Appendix 2 (D. Navigation Graphs Compliant to SANS 2 Drinking water standards). 3.1.3 Conclusion In most cases monitored results were as expected. To this end Landau Colliery is in the process of developing detailed groundwater models based on the WISHWHAC software which should provide a better understanding of the hydro-geological environment. 3.2. SURFACE WATER MONITORING A comprehensive surface water monitoring program is undertaken at Landau Colliery. This entails monthly sampling by the operation and quarterly catchment wide river and stream sampling by a third party, Aquatico Scientific. This report will detail the results of the on mine monitoring program specifically focusing on the pollution control structures and the liming plant at Kromdraai. The river and stream profile report is included as an attachment to this report and is titled Quarterly Upper Olifants River Basin Water Quality Assessment Report 3.2.1 Kromdraai Pollution Control Dams (PCD) Water samples are taken from three PCDs on a monthly basis and samples sent for laboratory analysis. Compliance is measured against the limits set on page 18 of 27 of the Kromdraai IWUL (04/B20G/ABCFGIJ/1245). Results discussed below are of those samples not compliant to the limits
set in the licence. It must be noted that an amendment request was submitted to the Department on 31 August 2012, to request for an amendment of some of the limits including the limits for sulphate, Temperature, TDS, aluminium, iron, etc. In this quarter water sample collection was only conducted in the months of January and February only, due to the absence of the Water Sampler who has been booked off for the past two months. The analysis represented below is thus only for the months of January and February. The samples are taken at these dams, the Kromdraai Pollution Control Dam, the Excelsior Pollution Control dam and the Dixon Dam. The water in the Kromdraai PCD is used to contain water from surface runoff. This water is pumped to the liming plant for treatment and is recycled for use on the mine. Water contained in the Dixon Dam is contaminated mine water from the North Block of the Kromdraai Section, it is pumped to the Liming plant for treatment. A portion of this water is recycled for re-use in the plant and the remaining volume is discharged, under license to the Kromdraaispruit. Water contained in the Excelsior PCD is contaminated water from the Excelsior Block. The water monitoring points representing these dams are: WP052 Dixon Dam WP406 Kromdraai PCD WP410 Excelsior PCD Figure 3 below shows the location of the licensed pollution control dams at the Kromdraai section. Figure 3: Location of pollution control dams at the Kromdraai Section Table 5: Kromdraai PCD Water Quality Limits as per IWUL values may not be exceeded Parameter Water quality limits for Waste Water Facilities ph 6.32 Temperature ( C) 22.4 Acidity in mg/l 49.9 Aluminium in mg/l 0.14
Parameter Water quality limits for Waste Water Facilities Chloride in mg/l 18.5 Iron in mg/l 1.3 Mercury in mg/l 85.3 Sodium in mg/l 105.7 Potassium in mg/l 11.0 Sulphate in mg/l 2263.2 Total dissolved solids in mg/l 3636 Total suspended solids in mg/l 112 Calcium in mg/l 70.41 Magnesium in mg/l 3.48 Manganese in mg/l 0.21 Alkalinity in mg/l 155 Aluminium, Iron, Calcium, and Magnesium Results The water quality in the Dixon and Excelsior Dams have exceeded the limit over the reporting period. This is expected due to the nature of the water at Kromdraai and indicates that the limits set in the license are unrealistic. The Kromdraai PCD has been drained for maintenance and cleaning during this reporting period. An amendment of the limits has been requested from the Department and the submission for an amendment was done on 31 August 2013. Sulphate and TDS Results Both WP052 (Dixon PCD) and WP410 (Excelsior PCD) exceeded the licensed limits in terms of the above parameters during the reporting period. The Excelsior PCD as indicated above contains water from the Excelsior South Block, which is water dewatered from underground workings and water from the workshops. The Dixon PCD contains contaminated water from the North Block of the Kromdraai Section which is pumped to the Liming plant for treatment. Both dams contain AMD which is expected to be high in sulphates and TDS. An amendment for these limits is also included in the amendment request. The Graphs for all the Kromdraai PCDs can be viewed in Appendix 3 Surface Water Quality Results (A. Kromdraai Pollution Control Dams: Water Quality Graphs). 3.2.2 Navigation Pollution Control Dams (PCDs) Water samples are taken from seven PCDs on a monthly basis and samples sent for laboratory analysis. Compliance is measured against the limits set on page 21 of 29 of the Navigation IWUL (04/B20G/ABCFGIJ/1498). Results discussed below are of those samples not compliant to the limits set in the licence.. (It must be noted that an amendment request was submitted to the Department on 31 August 2012, to request for an amendment of some of the limits including the limits for ph, Temperature, chloride, potassium, calcium, and magnesium.)
In this quarter water sample collection was only conducted in the month of January, due to the absence of the Water Sampler who has been booked off for the past two months. The analysis represented below is thus only for the month of January. Water samples are collected at these dams, the Navigation West/Umlalazi Pollution Control Dam, Schoongezicht Pollution Control Dam, Navigation Acid Water Dam, Navigation Pollution Control Dam, Navigation Raw Water Dam, Toe Seep Emergency Dam and the Toe Dam. The Navigation West PCD is used to collect contaminated runoff from the Navigation West Section Plant and Workshop areas, for re-use as process make-up water. This dam is used to temporarily store in-pit water prior to the re-use thereof. The Schoongezicht PCD mainly contains decant from old Schoongezicht underground workings, for treatment at the Navigation Liming Plants and re-use. The Navigation Acid Water Dam is used as a balancing dam prior to treatment in the Navigation Liming Plant. The Navigation PCD is used to contain contaminated runoff water, overflow from the penstock return water system and Toe Dam as well as water from Navigation West Section PCD for treatment at the Navigation Neutralisation Plant and re-use. The Toe Seep Emergency Dam is utilised to capture toe seep water emanating from the Blaauwkrans Co-Disposal Facility, the Toe Dam is used to contain seepage and polluted runoff from Blaauwkrans Co-disposal facility. Water from both dams is pumped for treatment at the Navigation Liming Plants before being re-used as make-up water at the Navigation Beneficiation Plant. The water monitoring points representing these dams are: WP068 Schoongezicht PCD WP069 Navigation Acid Water Dam WP070 Navigation Raw Water Dam WP072 Navigation PCD WP078 Toe Dam WP203 Toe Seep Emergency Water Dam WP409 Navigation West/Umlalazi PCD Figure 4 below shows the location of the licensed pollution control dams at the Navigation section. Figure 4: Location of the PCDs at the Navigation Section
Table 6: Navigation section PCDs Water Quality Limits as per IWUL values may not to be exceeded Parameter Water quality limits for Waste Water Facility ph 2.83 Temperature 23.24 Acidity in mg/l 13582 Aluminium in mg/l 295 Chloride in mg/l 12.54 Iron in mg/l 4840 Mercury in mg/l 85.3 Sodium in mg/l 137.0 Potassium in mg/l 10.8 Sulphate in mg/l 29798 Total dissolved solids in mg/l 22044 Total suspended solids in mg/l 239 Calcium in mg/l 370 Magnesium in mg/l 276 Manganese in mg/l 93.4 ph Results Exceedances have been noted for WP068 (Schoonie PCD) which contains acidic water from underground workings, WP070 (Raw Water Dam) which contains neutralised mine water, WP072 (Navigation PCD) containing all dirty runoff from the mine, WP078 (Toe Dam) containing seepage from Blaauwkraans co-disposal facility and WP409 (Umlalazi PCD) containing water from the plant and workshops at Umlalazi. All of the dams except for Umlalazi are expected to have low ph as they contain largely highly acidic water coming from either mine processes or dirty runoff contaminated from the mine area. Potassium, Calcium, Chloride and Magnesium Results Samples taken from WP068, 69, 70, 72, 78, 203 and 409 exceeded the limits. This is as expected due to the nature of the water contained in these dams. The lime neutralisation that takes place at the Navigation Section Liming Plant contributes to the increase in calcium content in the dams. These
parameters have been included as part of the limits to be amended as part of the amendment request submitted to the Department on 31 August 2012. The Graphs for all the Navigation PCD can be viewed in Appendix 3 Surface Water Quality Results (B. Navigation Pollution Control Dams: Water Quality Graphs). 3.2.3 PCDs Conclusion Water quality in the PCDs has remained relatively stable over the reporting period. Clearly some license conditions are not achievable and as such require amendment. The amendment request was submitted to the department on the 31 st of August 2012. 3.2.4 Water Discharged at the Kromdraai Liming Plant The main function of the Liming Plant at Kromdraai is to neutralize and soften the highly polluted acidic inflow from the various AMD sources. All the water from the Kromdraai PCDs (refer to 3.2.1), voids, open pits, and dewatering boreholes are pumped to the Liming plant for neutralization from an average ph of 2.5 to an average ph of 6.5. Limestone is the preferred medium for neutralization. Hydrated Lime is used as a standby system. Figure 5 below is a picture of the Liming Plant at Kromdraai. Figure 5: Liming Plant at Kromdraai. (for location refer to Appendix 1, Figure 6 9) The Process consists of a conditioning tank, an aerator, and a clarifier. The Liming Plant has a design capacity of 14 Ml/day even though only an average of 8.5 is treated on a day-to-day basis. The liming process is automated through the use of SCADA. Samples are collected on a two hourly basis, during the week from these areas: Feed Water (Influent from Lopies Dam) - ph, acidity, alkalinity and EC After the agitation Process - ph, and conductivity After Clarification Process (Final product) ph, conductivity, alkalinity, acidity, and conductivity Yellow buoy sample PH, EC and Solids percentage
Treated water is pumped to the Raw Water Dam for dust suppression and the excess is discharged to the Kromdraaispruit. The results presented in this report are the results of samples taken from the clarification process for discharge into Kromdraaispruit. Compliance is measured against the limits set on page 19 of 27 of the Kromdraai IWUL (04/B20G/ABCFGIJ/1245). Results discussed below are of those samples not compliant to the limits set in the licence. It must be noted that an amendment request was submitted to the Department on 31 August 2012, to request for an amendment of some of the limits including the limits for ph, Temperature, Chloride, Potassium, calcium, and Magnesium. A request has been made for an interim target based on the capabilities of lime neutralisation. Table 7: Liming Plant Discharge Limits as per IWUL Parameter Water quality limits for Waste Water Facility ph 8.998 Electrical Conductivity in ms/m 30.910 Chloride in mg/l 6.600 Sodium in mg/l 21.120 Potassium in mg/l 6.105 Sulphate in mg/l 10.230 Total dissolved solids in mg/l 191.400 Calcium in mg/l 20.790 Fluoride in mg/l 0.220 Magnesium in mg/l 13.200 Nitrate and nitrite in mg/l 0.737 Total Alkalinity in mg/l 150.700 TDS, Sulphate and Sodium Results TDS, sodium and sulphate concentrations continually exceed the limits set in the IWUL for discharge water. (Refer to the IWUL amendment request). Fluoride Results Flouride concentrations continue to show exceedances for April and May, but the levels decrease to below the limit in June. This will be further observed for the coming months.. The Liming Plant water quality graphs can be viewed in Appendix 3 Surface Water Quality Results (C. Liming Plant Discharge Qualities: Graphs). 3.2.5 Liming Plant discharge Conclusion
In general the qualities discharged by the liming plant are not compliant to the limits as set by the IWUL. The treatment process used at the liming plant cannot treat the water to the qualities as set by the IWUL and thus make these limits unattainable. A request to amend these limits forms part of the amendment request submitted to the Department on 31 August 2012. 3.2.6 River and Stream Monitoring The reader is referred to the attached report Quarterly Upper Olifants River Basin Water Quality Assessment. 4. WATER STORAGE Table 8 below shows the volume of water stored in the dams at the end of each month of the reporting period at the Navigation section. Table 8: Navigation Volumes of water stored in the Dams at the end of each month period. Date Raw Water Dam (m 3 ) Acid Water Dam (m 3 ) Schoonie Dam (m 3 ) Navigation dam (m 3 ) Dam Capacity 10 000 4000 45000 205000 31-Jan-12 8700 3160 28800 172200 29-Feb-12 8800 3520 27900 65600 31-Mar-12 9400 3400 20700 182450 30-Apr-12 9400 3480 26550 166050 31-May-12 9200 4000 32400 141450 30-Jun-12 9500 2840 23400 219350 31-Jul-12 9000 3200 26100 213200 31-Aug-12 9000 3600 23850 155800 30-Sep-12 7900 3040 29700 180400 31-Oct-12 9600 3480 21600 196800 30-Nov-12 8300 2920 26100 184500 31-Dec-12 8300 3360 39600 21115 31-Jan-13 7500 2600 42750 194750 28-Feb-13 9300 3480 44550 170150 31-Mar-13 9400 3080 39150 149650 30-Apr-13 9000 3280 45900 184500 31-May-13 9000 4000 44100 205000 30-Jun-13 7100 3520 25650 184500 It should be noted that volumes are based on percentage of capacity as determined by automated level indicators and levels are recorded on the Scada System. Several licensed dams have no automated systems and are as such left out of the current volume descriptions. Every effort will be made to place these dams onto the system and to report on the volumes held in later reports. In addition, no compensation for silting has been made. Table 9 below shows the volume of water stored in the dams at the end of each month of the reporting period at the Kromdraai section.
Table 9: Kromdraai Volumes of water stored in the Dams at the end of each month Date Kromdraai PC Dam (m 3 ) Kromdraai Holding Dam (Lopies) (m 3 ) Raw Water Dam (m 3 ) Dixon Dam (m 3 ) Dam Capacity 13000 29000 1700 8000 31-Jan-12 11050 10150 1275 30000 29-Feb-12 10790 10150 1275 30000 31-Mar-12 13000 14500 1564 30000 30-Apr-12 9880 26680 1666 21000 31-May-12 9750 7830 1700 15000 30-Jun-12 9880 6670 1105 3000 31-Jul-12 12480 17400 1632 3000 31-Aug-12 9680 15080 850 3000 30-Sep-12 11050 11890 901 3000 31-Oct-12 11050 14790 748 800 30-Nov-12 12090 9570 1292 800 31-Dec-12 8970 10150 850 800 31-Jan-13 Dam cleaning 1769 1020 800 28-Feb-13 Dam cleaning 1827 731 800 31-Mar-13 Dam cleaning 1595 765 800 30-Apr-13 5460 14500 1105 31-May-13 5460 14500 1530 30-Jun-13 5850 23200 1462 The marked reduction in the volume stored in Dixon dam is as a result of the newly installed pipeline which takes water from the dam to the liming plant for treatment. This dam is kept as empty as possible. 5. ABSTRACTION VOLUME Infrastructure i.e. flow meters have been ordered to allow accurate determination of the total water abstracted. This information will be provided in subsequent reports. Report Compiled by: Report Reviewed by: S. F. Vilakazi F. M. Grove Environmental Officer Environmental Superintendent
Landau Colliery DWA Quarterly Report No. 5 April to June 2013 6. APPENDIX 1: MAPS Figure 6: Locality Map for Landau Colliery 19
Figure 7: Catchment Boundaries relevant to Landau Colliery
Landau Colliery DWA Quarterly Report No. 5 April to June 2013 Figure 8: Layout Map for Kromdraai Section 21
Landau Colliery DWA Quarterly Report No. 5 April to June 2013 Figure 9: Layout map for Navigation Section 22
Landau Colliery DWA Quarterly Report No. 5 April to June 2013 23
Figure 10: Surface (plan on previous page) and Groundwater Monitoring (plan on this page) points 7. APPENDIX 2: GROUNDWATER QUALITY RESULTS A. KROMDRAAI GRAPHS NOT COMPLIANT TO SANS 2 DRINKING WATER STANDARDS
Graphs 1: ph Results Kromdraai (3) B. KROMDRAAI GRAPHS COMPLIANT TO SANS 2 DRINKING WATER STANDARDS Graphs 2: TDS Results Kromdraai (3)
Graphs 3: Sulphate results Kromdraai (3)
Graphs 4: chloride Results Kromdraai (3)
Graphs 5: Sodium Results Kromdraai (3)
Graphs 6: Iron Results Kromdraai (3)
Graphs 7: Aluminium Results Kromdraai (3)
Graphs 8: Flouride Results Kromdraai (3)
C. NAVIGATION GRAPHS NOT COMPLIANT TO SANS 2 DRINKING WATER STANDARDS Graphs 9: phh Results navigation (3)
Graphs 10: Sulphate Results Navigation (3)
Graphs 11: TDS results Navigation (3)
D. NAVIGATION GRAPHS COMPLIANT TO SANS 2 DRINKING WATER STANDARDS Graphs 12: Iron results navigation (3)
Graphs 13: Chloride results Navigation(3)
Graphs 14: Sodium results Navigation (3)
Graphs 15: Aluminium results navigation (3)
Graphs 16: Fluoride results Navigation (3)
8. APPENDIX 3: SURFACE WATER QUALITY RESULTS A. KROMDRAAI POLLUTION CONTROL DAMS: QUALITY GRAPHS Graphs 17: ph results PCD Kromdraai Graphs 18: Temperature results PCD Kromdraai Graphs 19: Aluminium results PCD Kromdraai
Graphs 20: Chloride results PCD Kromdraai Graphs 21: Iron results PCD Kromdraai Graphs 22: Sodium results PCD Kromdraai Graphs 23: Potassium results PCD Kromdraai
Graphs 24: Sulphate results PCD Kromdraai Graphs 25: Total Dissolved solids results PCD Kromdraai
Graphs 26: Calcium results PCD Kromdraai Graphs 27: Magnesium results PCD Kromdraai B. NAVIGATION POLLUTION CONTROL DAMS: QUALITY GRAPHS Graphs 28: ph Results PCD Navigation Graphs 29: Temperature Results PCD Navigation
Graphs 30: Aluminium Results PCD Navigation Graphs 31: Chloride Results PCD Navigation Graphs 32: Iron Results PCD Navigation
Graphs 33: Sodium Results PCD Navigation Graphs 34: Potassium Results PCD Navigation Graphs 35: Sulphate Results PCD Navigation
Graphs 36: Total Dissolved Solids PCD Navigation Graphs 37: Calcium Results PCD Navigation Graphs 38: Magnesium Results PCD Navigation
C. LIMING PLANT DISCHARGE LIMITS: GRAPHS Graphs 39: ph Results Liming Plant Graphs 40: TDS Results Liming Plant Graphs 41: Sulphate Results Liming Plant
Graphs 42: Chloride Results Liming Plant Graphs 43: Sodium Results Liming Plant Graphs 44: Fluoride Results Liming Plant
9. APPENDIX 4: GROUNDWATER MONITORING BOREHOLES: QUALITY RESULTS IN TABLES A. KROMDRAAI GROUNDWATER MONITORING Table 10: Kromdraai groundwater monitoring borehole results Site Date Fe Ph Cl Mg Na Al Ca SO4 K TDS F Kromdraai Groundwater Qualities (January) KRW012 08/01/2013 20.9552 6.71 3.2 10.7 10.25 4.8145 29.42 106 6.1695 224 1.29 KRW014 08/01/2013 0.987 5.68 6.61 23.14 19.43 1.3342 57.61 296 8.635 492 1.66 KRW024 08/01/2013 0.0365 4.65 2.46 0.98 3.38 0.0646 1.53 30.45 0.2909 49 0.82 KRW026 08/01/2013 0.6543 5.99 2.72 2.99 6.01 0.0433 6.48 30.86 0.4863 57 0.36 KRW027 08/01/2013 0.1087 5.33 2.23 0.16 3.19 0.3084 0.57 3.83 0.1368 17 0.13 KRW028 08/01/2013 0.1378 6.39 2.79 4.8 7.98 0 18.34 0.63 4.5032 111 0.42 KRW029 08/01/2013 0.0518 5.21 2.34 0.49 3.92 0.0715 1.31 5.45 0.1889 29 0.15 KRW030 08/01/2013 0.0414 4.67 3.63 2.48 5.16 0.2677 6.09 13.22 0.8523 61 0.18 KRW031 08/01/2013 0.46 6.79 2.06 3.48 4.86 0.0007 11.93 4.64 4.4234 62 0.13 KRW032 08/01/2013 0.3665 5.07 8.41 4.28 7.22 0.52 13.85 64.38 5.9337 154 0.2 KRW034 08/01/2013 1.3733 4.54 2.49 10.71 6.8 0.0115 21.59 138 5.3669 249 0.53 KRW035 08/01/2013 0.1108 6.29 2.96 1.59 5.6 0.0263 5.29 8.13 1.2648 51 0.18 KRW036 08/01/2013 0.3438 6.6 9.05 29 9.38 0.0556 45.47 197 4.5364 384 0.56 KRW038 08/01/2013 10.0514 5.76 2.42 2.13 4.93 0.1086 6.72 44.91 1.5492 88 0.17 KRW039 08/01/2013 0.1254 4.36 2.9 5.72 6.19 0.8039 7.57 51.55 2.649 108 0.16 KRW040 08/01/2013 18.9788 4.23 2.82 1.09 5.25 4.5728 3.67 65.06 0.569 120 0.06 KRW041 08/01/2013 0.0467 6.17 4.16 1.25 5.12 0.0221 3.57 7.79 3.471 53 0.05 KRW043 08/01/2013 0.0298 6.75 6.35 3.32 6.98 0.0174 11.08 7.34 1.4277 71 0.4 KRW047 08/01/2013 0.1827 6.89 7.1 21.02 25.38 0.1811 53.41 166 8.8687 418 1.01 KRW049 08/01/2013 0.0808 7.35 6.87 19.78 26.91 0.0334 50.89 110 8.9068 377 0.47 Kromdraai Groundwater Qualities (February) KRW012 04/02/2013 0.141 6.66 3.86 7.49 8.18 0.0069 23.13 58.68 5.2293 173 4.74 KRW014 04/02/2013 0.0709 6.06 6.93 20.76 16.34 1.1182 56.3 225 7.8716 447 4.29
Site Date Fe Ph Cl Mg Na Al Ca SO4 K TDS F KRW024 04/02/2013 0.0265 4.72 3.69 1.11 5.02 0.0671 2.26 22.62 0.4574 27 0.27 KRW026 04/02/2013 0.1748 6 1.75 3.29 4.6 0.0744 7.17 23.09 0.4725 101 4.91 KRW027 04/02/2013 3.6 5.63 1.58 0.16 3.43 0.25 0.41 7.08 0.1126 27 5.61 KRW028 04/02/2013 0.1564 6.66 2.28 5.64 5.63 0.0126 24.27 6.06 4.7872 141 4.81 KRW029 04/02/2013 0.018 4.42 1.49 2.14 2.11 0.91 5.15 27.83 0.313 65 5.31 KRW030 04/02/2013 0.0358 4.8 2.86 2.39 2.92 0.24 6.36 21.55 0.8038 83 5.22 KRW031 04/02/2013 0.1451 7.02 2.01 3.52 3.78 0.0093 14.4 15.01 4.4437 94 5.31 KRW032 04/02/2013 0.0588 4.47 8.07 4.17 5.1 0.4452 15.61 81.09 5.8152 152 4.95 KRW034 04/02/2013 3.523 4.43 1.82 11.97 7.24 0.1431 23.52 143 5.761 263 4.61 KRW035 04/02/2013 0 6.22 1.84 1.38 2.53 0.005 5.47 22.16 1.032 51 4.97 KRW036 04/02/2013 0.1337 6.49 3.47 30.53 7.83 0.0267 50.05 214 4.0891 386 4.45 KRW038 04/02/2013 8.9492 3.65 1.48 2.45 2.77 0.1746 8.45 47.75 1.5334 104 5.25 KRW039 04/02/2013 0.0902 4.42 2.11 6.14 4.02 0.9132 8.61 52.69 2.5733 133 5.19 KRW040 04/02/2013 0 4.6 1.77 0.33 2.5 0.37 1.31 9.07 0.4464 56 5.92 KRW041 04/02/2013 0 6.25 4.35 1.17 3.71 0.009 3.64 9.77 3.6071 78 5.84 KRW043 04/02/2013 0.0808 6.78 5.1 2.86 5.19 0.0183 10.61 6.37 1.2678 84 4.61 KRW047 04/02/2013 0.0789 7.18 7.33 18.71 21.22 0.1998 52.48 158 8.0076 412 4.45 KRW049 04/02/2013 0.0524 7.65 8.14 18.79 24.61 0.0319 53.54 110 8.2952 411 4.84 Kromdraai Groundwater Qualities (March) KRW012 13/03/2013 0.2483 6.38 2.49 9.31 7.98 0.0003 26.4 87.23 5.6972 187 0.71 KRW014 13/03/2013 0.131 5.17 5.17 22.52 14.63 2.1241 56.45 333 8.0629 524 0.88 KRW024 13/03/2013 0 4.44 3.49 0.81 5.86 0.1097 1.63 0.89 0.334 36 0.06 KRW026 13/03/2013 0.0396 5.38 1.78 4.37 5.06 0.2013 7.78 47.69 0.5736 95 0.19 KRW027 13/03/2013 0.0132 5.39 1.63 0.11 1.89 0.0569 0.22 1.34 0.1444 6 0.03 KRW028 13/03/2013 0.0185 6.33 1.99 5.35 8.9 0.0001 20.6 3.91 4.6862 104 0.3 KRW029 13/03/2013 0.0331 4.16 2.17 4.31 2.9 2.9417 7.31 60.78 0.5285 82 0.13 KRW030 13/03/2013 1.0809 6.34 3.39 2.33 6.96 0.0109 6.51 8.81 1.4393 58 0.29 KRW031 13/03/2013 0.1854 6.57 1.55 3.39 6.47 0.0011 11.84 4.4 4.3712 98 0.11 KRW032 13/03/2013 0.0682 5.26 7.59 3.51 5.66 0.2289 11.96 58.28 5.7272 106 0.19 KRW034 13/03/2013 0.5508 3.6 2.03 9.64 7.22 0.1466 18.12 137 5.8291 189 0.27 KRW035 13/03/2013 0.0791 6.06 2.03 1.64 3.79 0.008 5.74 7.37 1.1141 27 0.18 KRW036 13/03/2013 0.0248 6.28 2.96 29.48 6.38 0.0405 44.74 232 4.3068 409 0.67 KRW038 13/03/2013 1.3949 4.31 1.91 1.56 3.21 0.13 6.18 27.63 1.4203 34 0.16 KRW039 13/03/2013 4.0621 3.58 2.28 6.63 5.04 2.1439 8.57 83.27 2.513 136 0.13 KRW040 13/03/2013 0.0524 5.87 2.13 0.18 2.47 0.0042 0.33 0.36 0.424 17 0.03 KRW041 13/03/2013 0 5.97 2.85 1.36 3.42 0.0002 3.75 9.4 3.542 52 0.03 KRW043 13/03/2013 0.0554 6.55 4.58 3.74 4.78 0.0032 13.82 4.64 1.6 129 0.73 KRW047 13/03/2013 0 6.62 4.86 21.18 20.5 0.0353 53.73 215 8.4 426 1.05 KRW049 13/03/2013 0.0289 7.19 6.4 20.58 25.38 0.0159 52.67 145 8.6439 388 0.33 Kromdraai Groundwater Qualities (April) KRW012 29/04/2013 0.32 4.8 6 8.46 8 0.01 22.73 139 6.3345 280 0.5 KRW014 29/04/2013 0.02 3.5 8 22.95 10 9.50 54.15 247 8.817 501 0.3 KRW024 29/04/2013 0.01 3.2 7 1.03 3 0.03 1.81 8 0.3811 25 0.1 KRW026 29/04/2013 0.02 4.7 3 4.57 5 0.10 7.82 72 0.6436 97 0.1
Site Date Fe Ph Cl Mg Na Al Ca SO4 K TDS F KRW027 29/04/2013 1.75 4.6 2 0.15 2 0.06 0.51 3 0.1646 31 0.0 KRW028 29/04/2013 0.03 6.1 5 5.07 8 0.03 18.75 50 4.9832 216 0.2 KRW029 29/04/2013 0.06 3.9 1 8.72 3 14.98 14.1 279 0.9449 363 0.1 KRW030 29/04/2013 0.12 6.4 7 2.53 3 0.01 6.67 17 2.277 55 0.3 KRW031 29/04/2013 0.28 6.4 3 3.59 3 0.01 11.81 7 4.8498 65 0.1 KRW034 29/04/2013 0.38 3.4 3 16.26 8 0.32 28.94 186 7.0651 344 0.4 KRW035 29/04/2013 0.02 5.7 5 0.77 3 0.00 2.33 3 0.9828 22 0.2 KRW036 29/04/2013 0.07 5.0 3 30.75 7 0.01 43.42 185 5.8159 420 0.7 KRW038 29/04/2013 0.85 2.8 3 1.65 3 0.15 5.89 50 1.4246 111 0.2 KRW039 29/04/2013 0.03 4.4 4 5.66 4 1.00 7.33 60 2.9421 110 0.1 KRW040 29/04/2013 0.14 3.9 1 0.24 2 0.02 0.72 9 0.4332 19 0.0 KRW041 29/04/2013 0.02 4.7 4 1.14 3 0.02 2.89 13 3.4256 53 0.0 KRW043 29/04/2013 0.00 6.0 5 1.02 5 0.03 3.35 10 0.8869 110 0.4 KRW049 29/04/2013 0.03 5.4 6 21.63 30 0.04 55.85 64 8.3675 442 0.3 Kromdraai Groundwater Qualities (May) KRW012 21/05/2013 0.25 6.2 3 11.01 10 0.01 28.78 118 6.2952 235 0.0 KRW014 21/05/2013 0.24 4.6 6 23.53 14 5.30 55.84 281 8.5377 524 0.3 KRW024 21/05/2013 0.07 4.8 3 0.82 3 0.05 1.74 3 0.3688 30 0.2 KRW026 21/05/2013 0.14 5.5 1 4.65 5 0.07 8.26 50 0.672 91 0.2 KRW027 21/05/2013 0.06 5.1 0 0.51 2 0.04 0.84 4 0.2416 21 0.1 KRW028 21/05/2013 0.13 6.3 2 7.4 7 0.00 27.72 51 6.0797 138 0.3 KRW029 21/05/2013 0.14 3.8 1 11.83 6 13.53 18.48 195 1.4456 311 0.2 KRW030 21/05/2013 0.47 6.1 4 2.26 3 0.09 5.64 60 1.4149 72 0.3 KRW031 21/05/2013 0.06 6.4 3 3.75 3 0.00 12.74 9 4.7525 81 0.2 KRW034 21/05/2013 11.05 3.6 3 17.74 8 0.21 31.42 180 6.751 113 0.7 KRW035 21/05/2013 0.21 5.8 3 1.16 3 0.01 3.99 10 1.0785 40 0.3 KRW036 21/05/2013 0.13 6.7 7 31.31 7 0.04 42.26 181 6.1274 401 0.7 KRW038 21/05/2013 13.14 5.6 3 1.86 3 0.03 5.55 47 1.5486 66 0.4 KRW039 21/05/2013 0.11 4.2 3 6.75 6 1.08 8.31 89 2.8235 118 0.2 KRW040 21/05/2013 0.16 5.1 3 0.19 2 0.11 0.53 3 0.4894 14 0.1 KRW041 21/05/2013 0.00 5.7 4 1.16 3 0.02 3.04 11 3.7406 63 0.1 KRW043 21/05/2013 0.00 6.0 4 0.98 6 0.01 3.47 2 0.7157 52 0.7 KRW049 21/05/2013 0.04 7.0 7 21.69 25 0.02 55.64 131 8.8931 414 0.3 Kromdraai Groundwater Qualities (June) KRW012 11/06/2013 0.10 6.2 3 12.26 11 0.18 32.87 60 7.2612 170 0.4 KRW014 11/06/2013 0.08 4.3 6 19.82 18 2.16 41.28 277 9.4072 454 0.3 KRW024 11/06/2013 0.01 4.6 3 0.66 6 0.05 1.6 4 0.3244 8 0.0 KRW026 11/06/2013 0.08 5.4 2 4.98 8 0.16 8.96 54 0.7082 80 0.1 KRW027 11/06/2013 0.06 5.8 2 0.3 4 0.09 1.74 14 0.1998 2 0.0 KRW028 11/06/2013 0.17 6.3 3 8.8 7 0.01 11.76 44 7.4603 148 0.1 KRW029 11/06/2013 0.22 3.8 2 11.73 4 7.92 17.68 123 1.4799 194 0.1 KRW030 11/06/2013 0.05 6.0 4 2.24 8 0.04 6.19 18 1.0019 15 0.2 KRW031 11/06/2013 0.26 6.7 2 3.46 4 0.12 11.84 12 4.8694 116 0.1 KRW034 11/06/2013 1.32 3.5 3 18.38 11 0.37 33.19 162 6.8128 265 0.1
Site Date Fe Ph Cl Mg Na Al Ca SO4 K TDS F KRW035 11/06/2013 0.07 6.0 3 1.44 5 0.01 4.93 1 1.2539 60 0.1 KRW036 11/06/2013 0.06 6.7 4 30.19 7 0.01 44.92 172 6.8321 390 0.3 KRW038 11/06/2013 9.90 5.4 3 2.36 5 0.28 6.55 38 1.7839 49 0.1 KRW039 11/06/2013 0.02 5.6 3 6.06 5 0.86 7.2 50 2.8918 161 0.1 KRW040 11/06/2013 0.29 5.8 2 0.12 6 0.05 0.66 21 0.4995 13 0.0 KRW041 11/06/2013 0.11 6.3 4 1.14 5 0.00 3.04 20 3.8638 36 0.0 KRW043 11/06/2013 0.10 6.4 5 2.48 5 0.00 8.86 2 1.3246 59 0.1 KRW049 11/06/2013 0.02 7.0 7 25.5 26 0.01 56.67 128 10.206 405 0.2 B. NAVIGATION GROUNDWATER MONITORING Table 11: Navigation groundwater monitoring borehole results Site Date Fe ph Cl Mg Na Al Ca SO4 K TDS F Navigation Groundwater Qualities (January) 2S5 09/01/2013 0.8942 3.45 5.13 10.81 11.69 0.7494 15.63 98.73 0.0025 236 0.03 2S6 09/01/2013 1.3541 3.53 6.99 60.39 23.46 0.7371 186.21 581.6 0.0264 1424 0.16 5S5 09/01/2013 0 6.52 6.09 2.18 10.54 0.0337 8.52 15.77 0 99 0.09 NAV101 09/01/2013 0 6.97 4.74 4.31 26.1 0.0133 14.05 1.43 0.0388 139 1.42 NAV201 09/01/2013 4.6081 3.06 13.27 126.24 48.67 25.0113 310.94 1670 0.0929 4773 0.11 NAV501 09/01/2013 0.1267 6.53 24.91 6.64 19.85 0.0349 14.42 24.34 3.1175 222 0.63 NAV504 09/01/2013 0.2274 6.59 5.58 13.96 18.19 0.0535 28.45 100 4.2539 268 0.49 NAW001 09/01/2013 0.004 7.04 6.53 9.13 42.25 0.0122 18.93 6.7 0.0945 273 0.17 NAW003 09/01/2013 1.0599 6.42 4.52 29.39 14.48 0.0062 60.8 220 2.2675 510 0.15 NAW005 09/01/2013 0 5.93 6.41 2.89 4.4 0.3529 7.04 2.05 0 103 0.04 NAW008 09/01/2013 0.0467 6.45 8.28 7.14 7.43 0.0231 13.81 15.99 0 168 0.15 NAW009 09/01/2013 0.1 4.97 6.17 50.42 27.92 0.5992 67.92 363.2 0.0292 838 0.08 NAW010 09/01/2013 0.073 6.96 2.81 7.13 16.5 0.0636 37.64 60.64 0 244 0.08 NAW011 09/01/2013 0.1942 6.84 2.52 4.63 13.23 0.1455 8.63 6.68 0 91 0.31 NWG02 09/01/2013 0 5.8 3.49 1.18 6.35 0.2007 1.56 1.38 0 65 0.03 NWG05 09/01/2013 0 6.65 8.32 4.31 4.38 0.1296 9.48 6.59 0 56 0.15 NWG07 09/01/2013 0.0416 6.09 4.7 1.1 4.61 2.0051 2.86 9.32 0.0113 64 0.06 NWG08 09/01/2013 0.0181 6.14 5.52 1.17 7.04 0.063 3.68 5.55 0.0667 67 0.18 SPC002 09/01/2013 0.2738 6.22 7.79 211.4 53.08 0.0219 331.21 1490 5.844 3211 0.07 SPC003 09/01/2013 0.3323 6.43 16.09 81 35.08 0.0096 139.93 533.2 6.7386 1205 0.06 SPC004 09/01/2013 0.0762 5.88 22.28 5.32 45.42 0.0182 19 151 6.2327 280 0.06 SPC007 09/01/2013 496.1155 2.33 10.16 70.47 26.42 112.245 177.71 1780 0.6225 5413 0.01 Navigation Groundwater Qualities (February) 2S5 06/02/2013 0.0955 3.51 5.59 13.81 11.57 0.8398 23 132 3.4009 256 0.1 2S6 06/02/2013 0.2815 3.36 7.66 70.59 24.04 1.5815 279.12 834.2 4.956 1491 0.25
Site Date Fe ph Cl Mg Na Al Ca SO4 K TDS F 5S5 06/02/2013 0.4694 6.83 6.11 16.81 11.99 0.0152 35.56 49.68 1.5357 233 0.04 NAV101 06/02/2013 0.3484 7.11 4.82 5.27 25.8 0.0162 17.49 19.74 3.1671 160 0.15 NAV201 06/02/2013 339.716 2.76 8.08 105.29 40.77 16.4329 289.19 1730 8.5821 3009 0.1 NAV501 06/02/2013 0 6.96 26.56 5.32 15.9 0.0225 11.7 11.36 3.1259 208 0.38 NAV504 06/02/2013 0.0637 6.75 5.55 13.05 15.19 0.0679 27.57 90.36 4.0842 271 0.12 NAW001 06/02/2013 0.1027 7.45 6.2 7.88 35.78 0.0334 18.85 8.57 1.6892 244 0.17 NAW003 06/02/2013 0 6.78 3.43 8.97 7.73 1.9684 21.13 44.33 1.2952 208 0.04 NAW005 06/02/2013 0 6.17 6.16 2.93 3.91 0.0134 7.66 5.55 0.8716 82 0.07 NAW008 06/02/2013 0.0449 6.37 8.51 7.72 8.21 0.0023 17.76 16.81 0.9206 132 0.02 NAW009 06/02/2013 0 4.82 6.62 61.81 29.71 0.626 107.92 405.8 6.3921 845 0.06 NAW010 06/02/2013 0.116 7.24 2.7 7.93 15.81 0.0154 51.86 61.72 2.4051 180 0.28 NAW011 06/02/2013 0.2241 6.97 2.54 5.01 12.02 0.0105 10.78 6.35 2.2222 109 0.16 NWG02 06/02/2013 0 6.27 3.07 0.88 4.87 0.0821 1.27 5.93 0.761 43 0.04 NWG05 06/02/2013 0.0333 6.78 10.02 4.88 5.38 0.2077 11.34 7.05 0.9226 62 0.77 NWG07 06/02/2013 0.2006 6.2 4.9 1.11 3.86 0.8353 3.19 11.86 0.8026 47 0.05 NWG08 06/02/2013 0.039 6.57 5.9 1.46 7.82 0.3788 4.73 8.24 0.9975 80 0.15 SPC002 06/02/2013 0.5009 6.43 5.04 121.41 28.46 0.0285 201.25 784 3.7364 1392 0.09 SPC003 06/02/2013 0 6.38 16.77 82.88 31.7 0.0048 135.89 690.6 7.0582 1246 0.05 SPC004 06/02/2013 0 7.54 20.33 12.39 14.14 0 42.3 45.86 2.639 282 0.16 SPC007 06/02/2013 778.334 2.19 8.78 54.14 17.26 163.941 144.32 2920 0.249 6124 0 Navigation Groundwater Qualities (March) 2S5 19/03/2013 0.0873 4.32 5.17 10.49 10.34 0.0649 15.14 91.45 3.312 244 0.08 2S6 19/03/2013 0.5578 3.25 5.69 38.03 14.87 3.5497 125.8 436.6 3.7168 207 0.18 5S5 19/03/2013 0.0612 6.22 8.12 1.4 8.29 0.2632 7.55 3.45 1.5167 1041 0.08 NAV101 19/03/2013 0.042 6.64 4.48 4.9 26.4 0.0218 17.74 1.92 3.3773 2033 1.55 NAV201 19/03/2013 17.7339 3.01 6.13 86.84 35.65 9.9772 256.19 895.1 9.9259 85 0.21 NAV501 19/03/2013 0.0299 6.31 23.15 5.8 16.14 0.0304 14.11 23.86 3.121 218 0.53 NAV504 19/03/2013 0.0165 6.35 4.14 13.99 15.76 0.0092 29.71 88.78 4.3668 310 0.56 NAW001 19/03/2013 0.2268 6.72 7.25 8.5 34.51 0.0266 20.82 8.41 2.6539 277 0.22 NAW003 19/03/2013 0.4369 6.47 3.17 9.86 8.5 0.0378 24.65 41.78 1.2554 230 0.07 NAW005 19/03/2013 0.0548 6.35 8.41 4.64 3.61 0.0742 11.73-0.42 0.9168 107 0.12 NAW008 19/03/2013 0.0441 6.2 9.06 7.22 6.92 0.003 16.33 17.67 0.7959 81 0.11 NAW009 19/03/2013 0.1386 5.02 6.33 49.89 27.62 0.1758 79.85 428 5.5926 127 0.09 NAW010 19/03/2013 0.0427 6.55 2.13 7.1 14.55 0.1321 45.51 62.73 2.4575 107 0.13 NAW011 19/03/2013 0.1453 6.48 1.95 4.99 12.83 0.0439 11.2 2.85 2.5242 270 0.37 NWG02 19/03/2013 0.0453 5.82 2.27 0.42 4.01 0.0287 1.12 3.82 0.8488 43 0.04 NWG05 19/03/2013 0.0063 5.88 7.36 2.35 3.14 0.0054 7.17 1.93 1.2842 53 0.09 NWG07 19/03/2013 0.1219 5.42 4.93 1.43 4.41 0.3379 3.6 0.049 0.9501 24 0.05 NWG08 19/03/2013 0.3416 5.9 7.52 0.82 7.72 0.0218 2.96 7.65 0.5226 77 0.11 SPC002 19/03/2013 0.3552 6.01 4.21 75.18 21.55 0.0054 102.33 336.7 2.4606 7616 0.13 SPC003 19/03/2013 0.3641 5.92 15.44 106.7 34.56 0.3796 173.43 673.1 5.9041 952 0.05 SPC004 19/03/2013 0.045 6.65 21.2 11.94 14.39 0.1189 41.13 34 2.3378 1588 0.17 SPC007 19/03/2013 596.5105 2.32 9.35 61.73 19.01 189.228 175.22 2790 0.2897 4828 0 Navigation Groundwater Qualities (April)
Site Date Fe ph Cl Mg Na Al Ca SO4 K TDS F 2S5 16/04/2013 0 5.39 5.13 6.09 9.5 0.0196 8.98 55.77 2.8499 137 0.02 2S6 16/04/2013 0.2578 4.51 6.57 46.82 17.17 3.7076 154.67 471.5 4.0004 809 0.04 5S5 16/04/2013 0.0715 5.85 8.9 1.48 8.16 0.0036 6.67 6.57 1.5704 50 0.07 NAV101 16/04/2013 0 5.62 5.2 5.31 28.26 0.0182 19.67 9.25 3.5694 152 0.73 NAV201 16/04/2013 4.1833 4.5 10.15 76.52 35.62 5.0631 252.14 854 10.0672 1515 0.05 NAV501 16/04/2013 0.1002 6.01 6.6 9.85 40.98 0.0012 24.6 8.59 2.5682 237 0.12 NAV504 16/04/2013 0 6.43 4.69 14.99 16.06 0.0047 32 104 4.3956 286 0.57 NAW001 16/04/2013 0 6.19 3.85 6.48 9.01 0.0038 18.02 8.74 1.2284 153 0.02 NAW003 16/04/2013 0 6.49 25.86 4.79 13.58 0.0304 11.1 14.53 2.879 190 0.51 NAW005 16/04/2013 0.0581 5.72 8.02 2.91 4.02 0.4248 7.77 5.73 1.2147 41 0.02 NAW008 16/04/2013 0 6.33 8.78 6.21 5.94 0.0053 13.94 19.02 0.8 148 0.09 NAW009 16/04/2013 0 5.63 5.76 32.3 24.26 0.0261 53.14 293 5.0777 555 0.08 NAW010 16/04/2013 0.0427 6.55 2.13 7.1 14.55 0.1321 45.51 62.73 2.4575 107 0.13 NAW011 16/04/2013 1.2643 5.8 1.92 5.16 12.43 0.0048 12.23 22.62 2.5491 111 0.17 NWG02 16/04/2013 0.0848 6 2.43 0.22 3.21 0.0702 0.43 3.37 0.9886 38 0.04 NWG05 16/04/2013 0 5.93 10 4.77 3.94 0 10.51 3.22 0.9403 66 0.03 NWG06 16/04/2013 0.0028 5.77 5.62 1.26 4.43 0.3608 2.74 9.31 0.9121 39 0.03 NWG07 16/04/2013 0.3334 4.01 6.04 0.92 7.64 0.0873 2.44 13.04 0.702 45 0.05 NWG08 16/04/2013 0.1496 5.92 3.98 2.29 17.92 0.0217 4.34 21.71 0.5842 81 0.05 SPC002 16/04/2013 0 6.23 6.25 112.08 29.52 0.0127 157.23 1020 3.6742 1844 0.17 SPC003 16/04/2013 0 6.51 17.31 50.96 31.32 0 94.73 457.2 7.3385 851 0.08 SPC004 16/04/2013 0.0555 5.78 20.07 4.74 35.61 0.034 16.28 121 6.3712 252 0.08 SPC007 16/04/2013 646.65 2.25 9.28 54.13 18.36 162.05 145.58 2990 0.4241 6401 0.01 Navigation Groundwater Qualities (May) 2S5 21/05/2013 0.0639 4.23 3.96 6.17 8.28 0.1515 9.9 72.39 2.6535 132 0.2 2S6 21/05/2013 1.5541 3.18 5.84 57.29 20.09 1.7024 177.15 733 4.9688 1136 0.09 5S5 21/05/2013 0.0661 6.28 5.46 6.16 10.46 0.014 17.52 58.87 1.4521 97 0.16 NAV101 21/05/2013 0.1421 6.85 4.27 5.11 25.95 0.0315 17.25 7.19 3.443 135 0.98 NAV201 21/05/2013 348.987 2.75 13.61 116.68 47.21 18.5172 310.43 2000 8.8879 3412 0.1 NAV501 21/05/2013 0.0668 6.57 21.28 5.76 16.24 0.0302 13.22 25.48 3.1199 81 0.25 NAV504 21/05/2013 0.0572 6.45 3.75 16.15 17.06 0.0276 32.8 112 4.438 290 0.42 NAW001 21/05/2013 0.2258 7.01 6.72 8.73 42.3 0.0483 20.11 14.42 2.1495 239 0.3 NAW003 21/05/2013 1.2528 6.25 4.34 39.12 12.94 0.0056 77.14 323 2.7136 571 0.13 NAW005 21/05/2013 0.131 5.92 5.39 3.1 3.83 0.1248 8.05 4.03 1.0889 75 0.12 NAW008 21/05/2013 0.0482 6.4 9.79 8.59 7.17 0.0223 18.19 41.99 0.9475 155 0.03 NAW009 21/05/2013 0.0394 5.81 6.04 40.29 27.83 0.0276 64.69 171.4 5.7013 557 0.07 NAW010 21/05/2013 0 6.31 1.99 8.05 16.19 0.0022 52.09 68.26 2.636 231 0.04 NAW011 21/05/2013 0.0876 6.64 0.31 4.92 12.05 0.0091 10.44 19.1 2.4678 141 0.23 NWG02 21/05/2013 0.2922 5.95 1.09 0.21 3.37 0.1731 0.58 11.23 1.0029 26 0.09 NWG05 21/05/2013 NWG06 21/05/2013 0.4079 5.98 5.71 1.35 4.06 1.799 3.59 11.72 0.8937 57 0.08 NWG07 21/05/2013 0.1373 6.35 4.72 2.3 8.9 0.3628 7.35 31.52 1.5165 86 0.28 NWG08 21/05/2013 0.2644 6.46 3.56 1.91 15.3 0.054 3.7 3.46 0.4864 99 0.11 SPC002 21/05/2013 0.0265 5.94 2.94 57.63 18.31 0.0133 75.87 440 2.3118 673 0.11
Site Date Fe ph Cl Mg Na Al Ca SO4 K TDS F SPC003 21/05/2013 10.8328 6.17 37.04 79.68 33.59 0.0092 152.16 771 5.2376 1226 0.04 SPC004 21/05/2013 0.0751 5.8 18.3 6.08 33.71 0.0032 23.69 123 5.866 206 0.1 SPC007 21/05/2013 213.9935 2.45 12.5 29.51 21.92 57.6569 78.05 1210 2.2636 2059 0.04 Navigation Groundwater Qualities (June) 2S5 04/06/2013 0.1804 3.37 4.33 7.36 8.83 0.6232 11.89 97.64 2.5454 327 0.09 2S6 04/06/2013 0.5378 3.23 7.09 59.54 20.04 0.6279 202.31 788 4.4308 1352 0.06 5S5 04/06/2013 0.3601 6.25 6.58 1.92 8.39 0.0159 6.9 21.65 1.1875 230 0.07 NAV101 04/06/2013 0.0949 6.88 5.87 5.36 27.07 0.0158 17.2 24.7 3.4454 252 1.32 NAV201 04/06/2013 139.3505 2.92 8.35 108.7 41.49 10.6333 305.47 2110 9.146 2699 0.17 NAV501 04/06/2013 0.0068 6.81 20.78 6.26 16.85 0 12.61 6.19 3.0089 214 0.35 NAV504 04/06/2013 0 6.6 5.26 18.42 18.41 0 37.24 128 4.4494 268 0.36 NAW001 04/06/2013 0.0008 7.2 8.23 9.52 47.09 0 19.93 8.14 2.0209 271 0.23 NAW003 04/06/2013 0.1521 6.44 4.55 22.06 10.83 0 45.88 160 1.7616 361 0.1 NAW005 04/06/2013 0 6.6 6.61 3.22 3.93 0.0142 6.52 5.53 1.0165 99 0.06 NAW008 04/06/2013 0.0948 6.43 13.23 9.07 7.06 0.0132 18.65 34.29 0.71 217 0.07 NAW009 04/06/2013 0.0256 5.64 6.09 46.21 27.68 0.0084 73.84 541 5.3662 730 0.1 NAW010 04/06/2013 0.4054 6.68 1.09 7.92 15.95 0.0084 47.46 96.58 2.6685 263 0.1 NAW011 04/06/2013 0.01 6.65 4.39 4.91 15.32 0 8.9 9.06 2.4066 115 0.15 NWG02 04/06/2013 0.8411 5.98 4.28 0.3 4.81 0.6608 0.33 11.26 0.9214 27 0.05 NWG05 04/06/2013 0.0504 6.45 11.45 4.73 3.77 0.0729 10.37 3.17 0.6444 53 0.06 NWG06 04/06/2013 0.5049 5.95 9.29 1.3 3.99 3.0043 1.24 20.52 0.8485 75 0.05 NWG07 04/06/2013 0.0897 6.4 4.58 2.81 9.12 0.1188 7.58 9.63 1.4929 57 0.12 NWG08 04/06/2013 0.8295 6.41 3.82 2.99 18.51 0.0048 4.42 19.51 0.6421 81 0.16 SPC002 04/06/2013 0.0172 6.29 4.12 47.33 16.59 0 63.38 426 1.9431 822 0.15 SPC003 04/06/2013 0.0707 6.16 32.85 72.36 31.32 0 122.71 601 5.3079 1230 0.08 SPC004 04/06/2013 0.0034 5.85 23.97 7.4 41.34 0 17.28 148 7.2619 422 0.09 SPC007 04/06/2013 526.965 2.39 11.36 58.25 23.27 134.659 152.61 3500 0.3814 5152 0.01 10. APPENDIX 5: GROUNDWATER MONITORING BOREHOLES: LEVELS Table 12: Groundwater Monitoring Borehole Levels DateTimeMeas NAV101 NAV102 NAV 201 NAV501 KRW006 KRW040 24/08/11 14:00-1 -1-1 -1-1 1.84 11/09/11 14:00 16.67 36.49 21.03 3.71-1 1.94 23/09/11 14:00-1 -1-1 -1-1 2.01 24/09/11 14:00-1 -1-1 -1-1 2.04 07/10/11 14:00 16.66 36.54 21.03 3..76-1 2.04 13/10/11 14:00-1 -1-1 -1-1 2.12 20/10/11 14:00-1 -1-1 -1-1 2.19 26/10/11 14:00-1 -1-1 -1-1 2.19 04/11/11 14:00 16.68 40.78 21.04 4.29-1 2.31 10/11/11 14:00-1 -1-1 -1-1 2.39 17/11/11 14:00-1 -1-1 -1-1 2.5 24/11/11 14:00-1 -1-1 -1-1 2.49