appendix f part ii.pdfno surface water was noted within the stream on the south eastern boundary of...

APPENDIX F

SPECIALIST STUDIES

APPENDIX F1

GROUNDWATER MONITORING REPORT (WSP, 2008)

WEEKLY EFFLUENT TESTING RESULTS (JANUARY 2009 TO MARCH 2010)

Groundwater Monitoring Report

BMW South Africa

Rosslyn

January 2008

70812CL

BMW - GW

QM

WSP Environmental Block B, Bryanston Place 199 Bryanston Drive Bryanston Johannesburg 2157 Tel: +27(0) 11 361 1300 Fax: +27(0) 11 361 1301 http://www.wspgroup.co.za

Issue/revision Issue 1 Revision 1 Revision 2 Revision 3

Remarks Final

Date 4 January 2008

Prepared by G von Mayer

Signature

Checked by G Matthews

Signature

Authorised by G Matthews

Signature

Project number 70812CL

File reference 70812CL

Contents

EXECUTIVE SUMMARY 1

1 Introduction 5

2 Objectives 5

3 Background 5

3.1 Site Description 5 3.2 Geology and Hydrogeology 6 3.3 Groundwater Monitoring Network 6

4 Scope of Work 7

5 Methodology 8

5.1 Groundwater Purging and Sampling methodology 8 5.2 Analytical Programme 8 5.3 Interpretation of Results 8

6 Results 9

6.1 Standing water levels and Flow Direction 9 6.2 Surface Water Sampling 9 6.3 Groundwater Purging 9 6.4 Analytical Results 9

7 Discussion 11

7.1 Groundwater Direction 11 7.2 Inorganic Water Quality 11 7.3 Organic Water Quality 11

8 Conclusion 11

9 Recommendations 12 Appendix A Site and Monitoring Well Layout 13 Appendix B Purge Data 15 Appendix C QA/QC Results 20 Appendix D Analytical Results 21 Appendix E Groundwater Results Database 29

70812CL BMW - GW 3

Executive Summary

BMW South Africa (Pty) Ltd appointed WSP Environment (Pty) Ltd (WSP) to undertake the October 2007 groundwater monitoring.

Site Description

The BMW Plant is situated in the industrial area of Rosslyn, which is located approximately 18km north west of Pretoria. The Plant covers an area of approximately 30,7ha. Two aquifers are present beneath the site. The norites of the Bushveld Complex which underlie the area, are known to contain a deep aquifer. Beneath the site a shallow perched aquifer is present in the weathered bedrock interface. The piezometric surface is sloped in a north by north easterly direction.

The nearest surface water body is a stream that is located on the eastern boundary of the site. The stream flows in a northerly direction towards the Pienaars River which is a tributary to the Crocodile River. At the time of sampling there was no flow in this water course and therefore samples were not taken.

Field Work

The following field work was carried out during the sampling exercise:

The static groundwater levels were measured using an electronic dual phase interface dip meter (30th and 31st October 2007).

The monitoring wells were purged to stabilisation (pH and EC) using submersible grundfos variable drive pump. Where wells contained an insufficient standing water column to attained stability, they were pumped dry and allowed to recharge prior to sampling. The historic abstraction boreholes were run for 10 minutes prior to sampling.

Samples were preserved in laboratory prepared bottles and stored below 4°C prior to containment in cooler boxes for submission to the laboratory, Analytico Laboratories. The Terretest suite of analyses was used to determine a wide range of organic and inorganic determinands.

Results were interpreted using internationally recognised guideline values. The Dutch Guidelines were used as a reference although these are considered to be very conservative. These include the Dutch Target Values (DTV) and Dutch Intervention Values (DIV). South African Water Use guidelines published by the Department of Water Affairs and Forestry in 1996 were considered.

Findings

Findings of the monitoring event include:

No light non aqueous phase liquids (LNAPL) were detected using the interface meter.

Previous investigations determined the inferred groundwater flow direction is from the south/southwest to the north/northeast. The groundwater static level was found to be between 8.29 and 13.49mbgl.

No surface water was noted within the stream on the south eastern boundary of the site. No samples were recovered.

No DIV’s were exceeded for any constituent. DTV’s were exceeded for several inorganic determinands including:

– Ba, Cr, Co, Pb, Mo and Ni. The majority of these were found to be in MW6 which indicates that this area is impacted by on-site activities.

Trace organic contaminants include phenol, trichloromethane (TCA), trochloroethene (TCE), tetrachloroethene (PCE) and isopropylbenzene. Whilst the presence of these indicate impacts from industrial activities to groundwater, the levels at which these organic compounds are encountered are not of concern.

Conclusions

Based on the above, WSPE concludes that regional groundwater quality is of moderate condition with the following findings:

The deep aquifer may have been impacted by the use of chromium on-site however the level of concern is low.

70812CL BMW - GW 4

Slightly elevated metals were noted in MW6 and may suggest impacts to groundwater from site activities.

On-site groundwater is likely to have been impacted by organic contaminants through the use of solvents however the levels are not of concern. Potential sources include the Paintshop, Land Rover Plant, former and current underground storage facilities and historic spills.

As none of the elements identified in the groundwater analytical results exceeded the DIV the groundwater occurring below the site can be considered to be clean and suitable for continued industrial land use.

Recommendations

The following recommendations are made with regard to the findings for the monitoring event:

This is the second monitoring event undertaken at the site and continued monitoring should enable the establishment of a temporal trend and contaminant persistence.

PCE, TCE and DCE have a high relative density and are thus encountered at the bottom of the water column. It is thus suggested that bailers are used prior to purging of wells in order to recover samples to identify these components with a greater degree of accuracy.

A hydrocensus be undertaken to determine the surrounding water use related to the deep fractured rock aquifer.

70812CL BMW - GW 5

1 Introduction

BMW South Africa (Pty) Ltd has developed a groundwater monitoring programme in order to understand and assess the potential impacts of the site’s operations on the geohydrological environment. The groundwater monitoring network was established in 2006 and the monitoring programme is now in it’s second monitoring event. The monitoring programme has been designed to cover all site operations and includes bi-annual monitoring. WSP Environment and Energy (Pty) Ltd (WSP) was appointed to undertake the October 2007 monitoring exercise.

2 Objectives

The primary objective of the monitoring programme is to establish the quality of groundwater occurring below the site and to therefore identify potential sources of subsurface contamination. Additionally the monitoring data is to be incorporated into a database in order to determine temporal trends of groundwater quality.

3 Background

3.1 SITE DESCRIPTION

The BMW Plant is situated in the industrial area of Rosslyn, which is located approximately 18km north west of Pretoria. The Plant covers an area of approximately 30,7ha, of which the majority of the land use is associated with vehicle assembling activities (Figure 1). The majority of the site is covered by hardstanding with the limited soft standing occupying non-operational areas. There are a number of industrial activities occurring around the site which include:

South African Breweries;

Nampak;

Nissan;

August L’apple; and

Strandfoam.

70812CL BMW - GW 6

3.2 GEOLOGY AND HYDROGEOLOGY

The morphology of the region is characterised by an undulating topography. The site is underlain by Norites of the Bushveld Complex which derive moderate to deep clayey loam soils. The depth of the weathering of these norites range from 5 to 10 meters below ground level (mbgl). The Norite is known to contain a deep fractured rock aquifer. Beneath the site a shallow perched aquifer is present in the weathered bedrock interface.

The nearest surface water body is a non-perennial stream that is located on the eastern boundary of the site. The stream flows in a northerly direction towards the Pienaars River which is a tributary to the Crocodile River. At the time of sampling there was no flow in this water course and therefore samples were not taken.

3.3 GROUNDWATER MONITORING NETWORK

Six monitoring wells were installed across the site in October 2006. The positioning of each monitoring well took into account groundwater entering the site, site activities and historic site incidents (Table 1). The site layout and monitoring wells can be referenced in Appendix A.

Table 1: Monitoring well rationale Monitoring

Well Monitoring Well Location Rationale

MW1 Located on the northern section of the north western boundary of the BMW Plant upgradient of the Plant Training Centre.

To monitor the upgradient groundwater quality of the perched aquifer.

MW2 Located on the central section of the north western boundary of the BMW Plant upgradient of the New Paint Shop.


MW3 Located on the southern section of the north western boundary of the BMW Plant upgradient of the Landrover Plant.


MW4

Located on the north eastern boundary of the BMW Plant.

To monitor whether the petrol, diesel, ethanol and glycol UST’s are impacting the groundwater conditions in the area. This well will also allow for the assessment of impacts of the historical diesel and petrol spills on the groundwater environment.

BMW

Augist Laeple

Augist Laeple

South African Breweries

(SAB)

Strandfoam

Nampak

Main Industries

Bevcan

Nissan Security

Company

Figure 1: BMW Rosslyn Plant showing surrounding land users and on-site land use

70812CL BMW - GW 7

MW5 Located on the south eastern boundary of the BMW Plant near the external filling point and adjacent to the stream.

To monitor the upgradient impacts of the petrol and diesel UST’s and filling point.

MW6 Located on the south eastern boundary of the BMW Plant.

To monitor the groundwater downgradient of the Land Rover Plant, Chemical Store and Scrap Yard areas.

Two deep supply wells, one of which is still in use (i.e. irrigation water for the gardens), were available for sampling. Borehole logs are not available for these wells, but it can be assumed owing to the nature of the boreholes (i.e. current and historical supply holes) that the boreholes extend into the deep fractured aquifer underlying the site. It must be noted that if the shallower perched aquifer is found to be contaminated, the potential exists for the supply wells (depending on their installation) to act as a conduits therefore resulting in contamination of the deep fractured rock aquifer.

Groundwater flow direction (i.e. piezometric surface) was calculated in 2006 as being to the north on the western portions of the site and north easterly in the eastern portions of the site (Figure 2).

4 Scope of Work

In order to meet the aforementioned objectives the following scope of work was developed:

Groundwater purging and sampling of six monitoring wells and two historic supply boreholes;

Monitoring and collection of two surface water samples from the adjacent watercourse;

Interpretation of results with respect to international guideline values; and

Figure 2: Groundwater gradient and flow direction as taken from 2006 sampling excercise

70812CL BMW - GW 8

Report compilation describing the methodology, procedures, observations, temporal trends and findings of the project.

5 Methodology

5.1 GROUNDWATER PURGING AND SAMPLING METHODOLOGY

All field staff were oriented in accordance with the site specific health and safety requirements.

5.1.1 Static Groundwater Levels

The static groundwater levels were measured using an electronic dip meter in order to establish groundwater elevations to define the direction of groundwater flow and hydraulic gradient below the site.

5.1.2 Monitoring Well Purging

The monitoring wells were purged to stabilisation using a submersible Grundfos variable drive pump. Physiochemical parameters (pH and Electrical Conductivity) were monitored during purging, documented and used to determine stabilisation.

The historic abstraction boreholes were run for 10 minutes prior to sampling. This is to ensure that the sample is both representative of the aquifer characteristics and minimises interference of results from well installations.

5.1.3 Sampling

Samples were recovered from the pump discharge once stabilisation had been reached. Where wells contained an insufficient standing water column to attained stability, they were pumped dry and allowed to recharge before being sampled using a dedicated bailer.

Samples were preserved in laboratory prepared bottles and stored below 4°C prior to containment in cooler boxes for submission to the laboratory. The accompanying chain of custody was completed and guaranteed shipment of the coolers to the Analytico Laboratories in the Netherlands via courier.

5.2 ANALYTICAL PROGRAMME

Water samples from the monitoring wells and supply boreholes were analysed for the following broad spread of analytes in order to determine the baseline conditions of the groundwater quality occurring below the BMW Rosslyn Plant:

Inorganic Determinands (ICP-MS Scan)

Organic Determinands (GCMS)

Volatile Organic Compounds (VOCs),

Semi- Volatile Organic Compounds (SVOCs),

Poly Chlorinated Biphenols (PCBs) – in identified areas

ISO and US EPA analytical standards and methods were applied by the laboratory undertaking the sample analysis.

5.3 INTERPRETATION OF RESULTS

Results were interpreted using internationally recognised guideline values. The Dutch Guidelines were used as a preference although these are considered to be very conservative.

Dutch Target Values (DTV) for water are related to negligible risk for ecosystems. This is assumed to be 1% of the Maximal Permissible Risk (MPR) level for ecosystems, where MPR is the concentration expected to be hazardous for 5% of the species in the ecosystem, or the 95% protection level. For metals, background concentrations are taken into account in arriving at a value, however it must be noted that the background values are based on typical western European soils.

The DIV is the concentration expected to be hazardous to 50% of species in the ecosystem. It cannot be assumed that sensitive species will be protected at the Intervention levels. Site concentrations less than DTV indicate no

70812CL BMW - GW 9

restrictions necessary; concentrations between DTV and DIV suggests further investigation or restrictions may be warranted. Site concentrations exceeding the DIV indicate remediation is necessary.

South African Water Use guidelines published by the Department of Water Affairs and Forestry in 1996 were considered.

6 Results

6.1 STANDING WATER LEVELS AND FLOW DIRECTION

The sampling was undertaken on the 30 and 31st of October 2007. Prior to well purging, the static groundwater level was obtained using an electronic dip meter dual phase interface meter.

No light non aqueous phase liquids (LNAPL) were detected using the interface meter.

Previous investigations determined the inferred groundwater flow direction is from the south/southwest to the north/northeast (Table 2). The groundwater static level was found to be between 8.29 and 13.49mbgl.

Table 2: Static water levels measured across the BMW Rosslyn site Monitoring Well Standing Water Level (m bgl)

MW1 12.22 MW2 12.13 MW3 13.49 MW4 9.94 MW5 8.29 MW6 10.32

6.2 SURFACE WATER SAMPLING

No surface water was noted within the stream on the south eastern boundary of the site. No samples were recovered.

6.3 GROUNDWATER PURGING

Monitoring wells MW1, MW3-MW5 were sampled using the purge to stabilisation technique (Appendix B). MW2 and MW6 did not contain sufficient standing water within the column to obtain stabilisation. These wells were purged dry and left to recover prior to taking the sample with a dedicated bailer.

BH1 and 2 was run for 10mins prior to the sample being recovered directly from the pump discharge.

6.4 ANALYTICAL RESULTS

The samples were analysed by Analytico Laboratories in Barneveld, the Netherlands. .

6.4.1 Quality Control and Quality Assurance

A duplicate sample was recovered from MW4 and labelled MW7. The results show a suitable degree of precision for both inorganic and organic determinands and are deemed suitable for the purposes of the monitoring exercise. A table of comparative results can be seen in Appendix C.

6.4.2 Anayltical Results and Interpretation

The Dutch Intervention Values (DIV) were used as guidelines to assess the water quality of the groundwater below the BMW Rosslyn site. None of the contaminants identified during the analysis exceeded the DIV, however a number of contaminants did exceed the DTV. Please note that no organic results for MW5 and BH2 were reported by the laboratory as the sample containers were broken during delivery.All results can be referenced in Appendix D

pH and EC are well within acceptable limits. pH ranges from 6.8 – 7.2 with EC ranging from 30 – 130. The Department of Water Affairs and Forestry’s (DWAF) Domestic Use water Quality Guidelines list Ideal Target Water Quality Ranges of pH to range between 6-9 and EC 0-70mS/m. No health problems are encountered at these

70812CL BMW - GW 10

levels however the DWAF Industrial Use Water Quality Guideline lists potential corrosion at levels EC >120mS/m for Category 3 processes. Category 3 processes are those that can use water of drinking water quality.

Barium which was detected in all of the monitoring wells and boreholes above the DTV (i.e. 50 g/l). The concentrations of barium are relatively constant at all of the sampling locations and are similar to those of the previous monitoring event in 2006. This confirms that the presence of barium could potentially be related to the underlying geology of the site.

Chromium was detected only in BH1 (2 g/l) which is below the DTV. Chromium was also found in BH1 (5 g/l) in 2006.

Cobalt was encountered in MW6 (3 g/l) and is elevated above the DTV of 0.7 g/l.

Lead was encountered in MW6 (8 g/l) only and is slightly elevated above the DTV of 1.7 g/l.

Molybdenum was detected above the DTV (i.e. 5 g/l) at MW-06 (13 g/l).

Nickel was only elevated in MW6 (16 g/l). The DTV for Nickel is 2.1 g/l.

Vanadium was elevated in all monitoring wells (18-44 g/l) including the background monitoring well. The Dutch Guidelines do not have list vanadium as a contaminant of concern. However the consistent presence suggests that these levels are indicative of the geology of the area.

Zinc ranged from 8 – 94 g/l across the site. The DIV is 800 g/l and this is not a concern even considering the DTV of 24 g/l.

Isopropylbenzene was detected in two monitoring wells (MW3, 0.2 g/l and MW4, 0.1 g/l). No DTV is available for isopropylbenzene which is commonly used in paints as a thinner.

Phenol was slightly elevated above the DTV of 0.2 g/l in the duplicate sample of MW4 (MW7 0.8 g/l) but not in MW4. The DIV (2000 g/l) is close to 3 orders of magnitude greater than the detected level. Consequentially this level is not of concern.

Polycyclic Aromatic Hydrocarbons were detected in trace amounts in MW6. These include phenathrene (0.05 g/l), pyrene (0.3 g/l) and fluorine (0.01 g/l). These values are well below DIV’s for the individual determinands.

Fluoranthene which was detected above the DTV (i.e. 0.003 g/l) at all of the monitoring wells in 2006 was only detected in MW6 (0.25 g/l) in 2007. This suggests that the source was potentially related to the drilling activities and well installation.

Tetrachloroethene (PCE) was detected above the DTV (i.e. 0.01 g/l) at all of the sampling points barring MW-01 in 2006. In 2007 PCE detected in BH1 and MW2-4 at levels ranging from 1.1 to 3.8 g/l (peak in MW2). PCE is a useful solvent and is used as a degreasing agent for metal surfaces (Table 3).

Trichloroethene (TCE) is often a component of the same solvents as above and is a natural breakdown product of PCE. Hence PCE and TCE are usually encountered within the same chemical signatures. TCE is encountered at levels well below the DTV of 24 µg/l (Table 3).

Dichloroethene (DCE) is another dehalogenated breakdown product of the PCE group of hydrocarbons. This was only encountered in MW2 (1.7µg/l) (Table 3).

Trichloromethane (Chloroform) was encountered in similar wells as above viz. BH1 and MW2-4. These values range from 0.82 to 4.9µg/l and are below the DTV of 6µg/l (Table 3).

Table 3: Chlorinated Hydrocarbons encountered within the monitoring wells located at BMW Rosslyn PCE TCE DCE TCA

DTV 0.01 24 0.01 6 BH1 1.1 1.5 1.3 MW2 3.8 2.5 1.7 4.9 MW3 1.5 1.5 0.82 MW4 1.2 2.6 3.1 MW6 0.63

70812CL BMW - GW 11

7 Discussion

7.1 GROUNDWATER DIRECTION

Initially, the monitoring wells network was set up to monitor specific plant impacts to the groundwater beneath the site. Since no groundwater direction was calculated at the time, the groundwater flow was anticipated to be easterly by east north easterly (following the natural topographic gradient). The surveying of the water levels following the 2006 installation of the monitoring wells showed the groundwater gradient was north on the western portion of the site becoming north by north easterly towards the centre of the site (Figure 2). The impact of this is that the wells designed to intercept upgradient groundwater to the west of the site are in fact not entirely background wells. The impacted wells include MW1 and MW2.

MW1 can now be considered to represent groundwater impacted by August LeApple and BMW plant in the north western corner of the site.

MW2 can be expected to be representative of impacted water from the Paintshop, August LeApple and potentially the former Land Rover plant.

MW3 is considered to represent background conditions.

7.2 INORGANIC WATER QUALITY

The groundwater beneath the site is characterised by neutral groundwater with a moderate salt content (indicated by moderate EC results). Impacts to groundwater from metals is considered to be low, however, the results show that MW6 has the highest and most diverse range metallic components which include Co, Pb, Mo, Ni, and Zn. This diverse component is not reflected in wells in other parts of the site and thus suggest that the site activities and not the geologic make up beneath the site is responsible for the results. The area around MW6 has been used as a Chemical Store and Scrap Yard. The well was also located down gradient of the former Land Rover Plant. Whilst this may be interpreted as being a result of on-site activities the levels are low and therefore of little concern.

BH1 represents the deep fractured rock aquifer and the presence of Chromium above DTV’s within the groundwater and was present in 2006 (5µg/l). Chromium is not encountered in other monitoring wells including BH2 suggesting that this is not a feature of the geologic make up and can be linked to BMW operations. Potential sources of Cr are the Paintshop and the former Land Rover plant.

7.3 ORGANIC WATER QUALITY

The majority of the organic components of the groundwater are not normally associated with natural mechanisms and are thus considered anthropogenic. Phenol, isopropylbenzene and the chlorinated hydrocarbons are associated with solvent use which can be linked to industrial activities within the region.

MW2 and 3 were established with the intention of monitoring upgradient groundwater entering the site which suggests that it is the regional groundwater which is impacted and not the site’s activities which are impacting the perched aquifer. However, the calculated groundwater direction (calculated in 2006 as being in a northerly by north easterly direction) thus suggests that only MW3 is background and that MW2 and MW4 may intercept groundwater impacted by site activities. Potential sources from on-site activities include the former Land Rover plant, Paintshop, Current and former underground storage facilities and assembly plants. The concentrations of organic contaminants within the groundwater is considered to be low and therefore not of considerable concern at this stage.

BH1 can be considered to monitor the deeper aquifer. The presence of PCE, TCE and TCA suggest industrial impacts to groundwater either from the regional industrial activities or from site activities. On-site potential sources include the Paintshop and the former Land Rover plant.

8 Conclusion

Based on the above, WSP concludes that regional groundwater quality is of moderate condition with the following findings:

70812CL BMW - GW 12

The deep aquifer may have been impacted by the use of chromium on-site however the level of concern is low.

Slightly elevated metals were noted in MW6 and may suggest impacts to groundwater from on site activities.

On-site groundwater is likely to have been impacted by organic contaminants through the use of solvents however the levels are not of concern.

As none of the elements identified in the groundwater analytical results exceeded the DIV the groundwater occurring below the site can be considered to be acceptable and suitable for continued industrial land use.

9 Recommendations

The following recommendations are made with regards to the findings of the groundwater monitoring:

This is the second monitoring event undertaken at the site and continued monitoring should enable the establishment of a temporal trend and contaminant persistence.

PCE, TCE and DCE have a high relative density and are thus encountered at the bottom of the water column. It is thus suggested that bailers are used prior to purging of wells in order to recover samples to identify these components with a greater degree of accuracy.

A hydrocensus within 1km of the site be undertaken to determine the surrounding water use related to the deep fractured rock aquifer.

70812CL BMW - GW 13

Appendix A Site and Monitoring Well Layout

70812CL BMW - GW 14

MW-01

MW-04

MW-02

MW-06

MW-05

MW-03

BH-01

BH-02

70812CL BMW - GW 15

Appendix B Purge Data

GROUNDWATER MONITORING WELL MICRO PURGING AND SAMPLING FIELD RECORD

PROJECT: BMW LOCATION: Gate 2

PROJECT NO: 70307CL SUPERVISOR: G von Mayer

WELL NO: MW. 01 DATE: 30 October 2007

GROUNDWATER PURGING TIME WATER

LEVEL (m)

CUM VOL PURGED

(l)

FLOW RATE (l/m)

pH TEMP (°C)

EC (µS/m)

DO (mg/l)

ORP REMARKS

13:35 18.00 6.59 26.10 119 Opaque colour

13:39 6.72 23.90 125 13:43 6.74 23.60 125 13:46 6.76 23.60 125 13:49 6.76 23.50 126 13:52 6.76 23.40 126

COMMENTS AND OBSERVATIONS

SW 12.22, base 21.55, pump depth 19m

PURGE STABILISATION GRAPH FOR MW. 01

6.50

6.55

6.60

6.65

6.70

6.75

6.80

13:35 13:39 13:43 13:46 13:49 13:52

Time (hh:mm)

pH

114

116

118

120

122

124

126

128

EC

pH EC(µS/m)

70812CL BMW - GW 16

TIME WATER LEVEL

(m)

CUM VOLPURGED

(l)

FLOW RATE (l/m)

pH TEMP(°C)

EC(µS/m)

DO(mg/l)

ORP

16.00 7.05 25.00 593dmg after 2 minutes

came back 31/10/2007 at 13:05 took sample using bailer. Bailed 2X then took sample

slightly sedimented


SW 12.13, base 15, pump depth 13m

REMARKS

Paintshop

G von Mayer

WELL NO: DATE: 30 October 2007

PROJECT NO:

BMW LOCATION:


PROJECT:

GROUNDWATER PURGING

SUPERVISOR:70812CL

MW. 02

70812CL BMW - GW 17

PURGE STABILISATION GRAPH FOR MW. 03

6.80

6.82

6.84

6.86

6.88

6.90

6.92

6.94

6.96

14:55 15:00 15:03 15:06 15:09 15:12 15:15 15:20 15:24 15:27

Time (hh:mm)

pH

588

590

592

594

596

598

600

602E

C

pH EC(µS/m)

TIME WATER LEVEL

(m)

CUM VOLPURGED

(l)

FLOW RATE (l/m)

pH TEMP(°C)

EC(µS/m)

DO(mg/l)

ORP

14:55 4.00 6.94 25.60 59315:00 6.85 25.20 59815:03 6.85 25.10 59915:06 4.40 6.85 25.10 60115:09 6.85 25.00 59915:12 6.86 25.00 59915:15 6.86 24.70 60115:20 6.87 24.90 60115:24 6.87 24.60 60015:27 6.87 24.50 600

clear


SW 13.49, Base 21.98, fracture 17m

REMARKS

Landrover Plant

G von Mayer


PROJECT NO:

BMW LOCATION:


PROJECT:

GROUNDWATER PURGING

SUPERVISOR:70812CL

MW. 03

70812CL BMW - GW 18

TIME WATER LEVEL

(m)

CUM VOLPURGED

(l)

FLOW RATE (l/m)

pH TEMP(°C)

EC(µS/m)

DO(mg/l)

ORP Remarks

12:21 9.94 15.00 6.51 24.20 632 clear + no colour12:25 15.00 6.66 23.70 64012:28 6.71 23.60 64312:32 6.73 23.50 64512:35 6.73 23.50 64512:38 17.00 6.75 23.50 645 depth 10m12:42 6.74 23.50 64512:45 6.76 23.50 64512:49 6.76 23.50 64512:53 18.00 6.80 23.40 64512:57 6.78 23.40 645 water level 10.02m13:00 6.75 23.40 64513:03 6.76 23.40 64513:06 6.76 23.40 645


SW 9.94, base 14.94, pump depth 13 *Duplicate sample MW07, time 12:21 15l/m clear water + no odour

BMW LOCATION:


PROJECT:

GROUNDWATER PURGING

SUPERVISOR:

pm

G von Mayer


PROJECT NO: 70812CL

MW. 04

PURGE STABILSATION GRAPH FOR MW. 04

6.35

6.40

6.45

6.50

6.55

6.60

6.65

6.70

6.75

6.80

6.85

12:21 12:25 12:28 12:32 12:35 12:38 12:42 12:45 12:49 12:53 12:57 13:00 13:03 13:06

Time (hh:mm)

pH

625

630

635

640

645

650

EC

pH EC(µS/m)

70812CL BMW - GW 19

TIME WATER LEVEL

(m)

CUM VOLPURGED

(l)

FLOW RATE (l/m)

pH TEMP(°C)

EC(µS/m)

DO(mg/l)

ORP

11:10 8.29 7.5011:12 6.62 23.20 58011:15 6.68 22.80 58711:18 6.74 22.60 58711:21 16.00 6.76 22.50 58711:24 6.78 22.50 58811:27 6.79 22.50 58811:30 6.80 22.50 59011:33 15.00 6.80 22.50 59211:35 6.82 22.50 59211:38 6.83 22.50 59211:41 6.82 22.50 59211:44

70812CL

MW. 05


PROJECT:

GROUNDWATER PURGING

SUPERVISOR:

REMARKS

Gate 5

G von Mayer


PROJECT NO:

BMW LOCATION:


, base 15.56, pump depth 13.50 m

PURGE TO STABILISATION GRAPH FOR MW. 05

6.5

6.55

6.6

6.65

6.7

6.75

6.8

6.85

11:10 11:12 11:15 11:18 11:21 11:24 11:27 11:30 11:33 11:35 11:38 11:41

Time (hh:mm)

pH

574

576

578

580

582

584

586

588

590

592

594E

C

pH EC(µS/m)

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Appendix C QA/QC Results

Determinand MW4 MW7

pH 7.0 7.1

EC 19.6 19.7

Ba 66 65

Cr

Ni 4 4

V 21 20

Zn 10 26

Isopropylbenzene 0.1 0.1

Phenol 0.8

Trichloromethane 3.1 3.8

Trichloroethene 2.6 2.8

Tetrachloroethene 1.2 1.2

70812CL BMW - GW 21

Appendix D Analytical Results

70812CL BMW - GW 22

70812CL BMW - GW 23

70812CL BMW - GW 24

70812CL BMW - GW 25

70812CL BMW - GW 26

70812CL BMW - GW 27

70812CL BMW - GW 28

70812CL BMW - GW 29

Appendix E Groundwater Results Database

70812CL BMW - GW 30

Table 4: Comparison of 2006 and 2007 Results

Determinants MW 01 MW 02 MW 03 MW 04 MW 05 MW 06 BH 1 BH 2

2006 2007 2006 2007 2006 2007 2006 2007 2006 2007 2006 2007 2006 2007 2006 2007

Characteristics

pH 7.2 7.1 7.3 7.2 7.4 7.2 7.3 7.0 7.6 6.8 7.5 7.1 7.4 7.2 7.4 7.2

Electrical Conductivity 140 130 58 61 67 68 73 66 57 64 57 64 74 73 68 63

Inorganic Determinants

Arsenic 5

Antimony

Barium 88 51 79 65 63 66 96 66 40 45 46 36 74 69 63 60

Beryllium

Cadmium

Chromium 10 5 2

Cobalt 1 2 2 3

Copper 4

Mercury 0.21

Lead 11 4 9 9 5 8

Molybdenum 4 2 4 17 13

Nickel 9 5 6 7 6 4 8 4 10 4 13 16 6 4 5

Selenium

Tin 5

Blank Spaces indicate the determinant was Below Detection Limit (BDL)

70812CL BMW - GW 31


2006 2007 2006 2007 2006 2007 2006 2007 2006 2007 2006 2007 2006 2007 2006 2007

Vanadium 30 44 20 23 10 18 20 21 30 27 8 22 20 19 20 18

Zinc 17 18 10 16 11 11 5 20 8 27 39 63 94

Mono Aromatic Hydrocarbons

Isopropylbenzene 0.2 0.1

Toluene 0.6

Phenols

Phenol

Polycyclic Aromatic Hydrocarbons

Fluorene 0.01

Phenanthrene 0.05

Fuoranthene 0.42 0.36 0.10 0.46 0.23 0.23 0.25

Pyrene 0.4 0.3 0.2 0.3 0.2 0.2 0.3

PAH 10 VROM (sum) 0.4 0.4 0.2 0.5 0.2 0.2 0.3

PAH 16 EPA (sum) 0.8 0.7 0.3 0.9 0.4 0.4 0.6

Volatile Chlorinated Hydrocarbons

Trichloromethane 0.97 3.7 4.9 2.1 0.82 2.5 3.1 1.1 1.2 1.3 1.3

Trichloroethene 1.2 2.5 1.3 1.5 2.1 2.6 2.6 1.0 0.63 1.1 1.5 2.1

Tetrachloroethene 0.80 3.8 0.92 1.5 0.82 1.2 0.42 0.49 0.75 1.1 0.9-

Cis 1,2 - Dichloroethylene 1.7

70812CL BMW - GW 32


2006 2007 2006 2007 2006 2007 2006 2007 2006 2007 2006 2007 2006 2007 2006 2007

Chlorophenols

2,4/2,5-Dichlorophenol 0.04 0.01

Dichlorophenols (sum) 0.04 0.01

WEEKLY EFFLUENT TESTING RESULTS (JANUARY 2009 TO MARCH 2010)

Composite

Sample

Composite

Sample

All VALUES

in S

pe

cif

iac

tio

n

14

.01

.20

09

27

.01

.20

09

05

.02

.20

09

11

.02

.20

09

17

.02

.20

09

25

.02

.20

09

03

.03

.20

09

10

.03

.20

09

17

.03

.20

09

24

.03

.20

09

31

.03

.20

09

07

.04

.20

09

08

.04

.20

09

06

.05

.20

09

12

.05

.20

09

20

.05

.20

09

Actual pH 6 to 10 8.67 7.59 7.21 7.2 6.79 9.62 8.96 8.04 9.47 8.19 9.09 7.39 8.29 8.91 6.25 6.41

COD ≤750 95 37 57 136 184 25 188 216 117 1500 51 173 199 429 91 67

Chromate

(Cr VI)

≤0.05

Cr VI

<0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 0.03 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 0.03

Chromium

total

≤0.5

Cr

0.016 0.09 <0.01 <0.01 <0.01 <0.01 0.22 <0.01 <0.01 <0.01 <0.01 0.17 0.25 <0.01 <0.01 0.27

Copper ≤0.5

Cu

0.06 0.4 <0.01 0.02 <0.02 <0.01 0.18 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01

Lead ≤0.5

Pb

0.04 0.42 0.26 <0.01 <0.01 <0.01 0.23 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01

Zinc ≤2 Zn 0.21 1.54 0.17 0.36 0.32 0.72 0.66 0.04 0.24 0.22 0.13 0.1 0.34 0.23 0.11 0.66

Manganese ≤5 Mn 0.03 1.31 0.01 0.1 <0.01 0.006 <0.01 0.01 <0.01 0.01 <0.01 <0.01 0.01 0.01 0.06 0.06

Nickel ≤1 Ni 0.01 0.8 0.02 0.14 0.01 <0.04 0.26 <0.03 0.02 <0.01 <0.05 0.14 0.13 <0.01 0.41 0.21

Iron ≤5 Fe 0.03 0.87 0.01 <0.01 <0.01 0.04 0.26 <0.01 0.12 <0.01 0.09 0.74 1.05 0.05 <0.05 1.07

Sulphate ≤600

SO42-

5 10 <5.00 <5.00 <5.00 23 <5.00 <0.01 <5.00 7 13 <0.01 3 8 <5.00 <5.00

Fluoride ≤10 F-

0.22 0.39 <0.10 0.64 1.08 0.58 0.13 <0.1 0.46 <0.10 0.16 <0.01 0.07 0.35 0.16 0.59

Phosphate ≤10 0.3 7.9 <0.50 2.2 2.9 1.3 0.6 <0.01 <0.5 0.7 <0.5 <0.01 0.5 2.8 1 <0.3

All VALUES

in S

pe

cif

iac

tio

n

03

.06

.20

09

09

.06

.20

09

12

.06

.20

09

24

.06

.20

09

14

.07

.20

09

29

.07

.20

09

25

.08

.20

09

30

.09

.20

09

08

.10

.20

09

22

.10

.20

09

10

.11

.20

09

24

.11

.20

09

04

.12

.20

09

08

.02

.20

10

16

.03

.20

10

26

.03

.20

10

05

.11

.20

10

Actual pH 6 to 10 9.91 6.68 7.43 7.5 7.23 5.67 6.6 6.16 6.45 7.36 7.71 7.18 7.18 7.22 6.95 7.19 7.46

COD ≤750 73 Not tested

due to

Instrument

failure

Not tested

due to

Instrument

failure

Not tested

due to

Instrument

failure

43 71 34 49 263 87 111 83 26 <25 39 42 62

Chromate

(Cr VI)

≤0.05

Cr VI

<0.01 Not tested

due to

Instrument

failure

Not tested

due to

Instrument

failure

Not tested

due to

Instrument

failure

<0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01

Chromium

total

≤0.5

Cr

0.1 0.1 <0.01 <0.01 <0.01 0.07 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01

Copper ≤0.5

Cu

<0.01 <0.01 <0.01 0.13 0.02 0.06 <0.01 <0.01 <0.01 0.02 0.01 0.02 <0.01 <0.01 <0.01 <0.01 0.02

Lead ≤0.5

Pb

<0.01 <0.01 <0.01 <0.01 <0.01 <0.10 <0.13 <0.04 <0.07 <0.01 0.01 <0.1 <0.01 0.04 <0.06 <0.01 <0.01

Zinc ≤2 Zn 0.38 0.38 3.04 0.92 0.77 0.21 0.79 0.53 0.11 0.79 0.31 0.56 0.44 0.8 1.2 0.36 0.26

Manganese ≤5 Mn 0.11 0.11 1.02 <0.01 0.01 0.02 <0.01 <0.01 <0.01 0.03 0.03 0.06 <0.01 <0.01 <0.01 <0.01 0.04

Nickel ≤1 Ni 0.19 0.19 0.88 <0.01 <0.01 0.15 <0.01 <0.01 <0.01 <0.05 0.04 0.01 <0.01 <0.01 0.01 <0.01 <0.01

Iron ≤5 Fe 0.73 0.73 <0.01 <0.01 0.11 1.14 <0.01 <0.01 <0.01 <0.01 0.03 <0.01 <0.01 <0.01 0.66 <0.01 <0.01

Sulphate ≤600

SO42-

<5.00 Not tested

due to

Instrument

failure

Not tested

due to

Instrument

failure

Not tested

due to

Instrument

failure

<5.00 13 6 <5.00 8 5 <5.01 10 <5.00 7 5 <5.00 <5.00

Fluoride ≤10 F-

<0.01 Not tested

due to

Instrument

failure

Not tested

due to

Instrument

failure

Not tested

due to

Instrument

failure

0.59 <0.01 <0.1 <0.1 <0.1 <0.01 <0.01 <0.1 <0.01 <0.01 <0.01 <0.01 <0.01

Phosphate ≤10 1.1 Not tested

due to

Instrument

failure

Not tested

due to

Instrument

failure

Not tested

due to

Instrument

failure

<0.3 <0.5 <0.5 <0.5 <0.5 <0.01 <0.5 0.9 <0.01 <0.01 <0.01 <0.01 0.9

0

2

4

6

8

10

12

11.0

2.20

09

25.0

2.20

09

10.0

3.20

09

24.0

3.20

09

07.0

4.20

09

06.0

5.20

09

20.0

5.20

09

09.0

6.20

09

24.0

6.20

09

29.0

7.20

09

30.0

9.20

09

22.1

0.20

09

10.1

1.20

09

04.1

2.20

09

16.0

3.20

10

pH trend 2009 -Actual pH

600

800

1000

1200

1400

1600

mg/l

COD trendCOD

COD limit

0

200

400

600

800

1000

1200

1400

1600

mg/l

COD trendCOD

COD limit

0 01

0.015

0.02

0.025

0.03

0.035

mg/l

Chrome VI total trend

Chromate (Cr VI)

0

0.005

0.01

0.015

0.02

0.025

0.03

0.035

mg/l

Chrome VI total trend

Chromate (Cr VI)

0.15

0.2

0.25

0.3

0.35

0.4

0.45

mg/l

Cu,Pb, Chrome total trend

Chromium total

Copper

Lead

0

0.05

0.1

0.15

0.2

0.25

0.3

0.35

0.4

0.45

mg/l

Cu,Pb, Chrome total trend

Chromium total

Copper

Lead

1

1.5

2

2.5

3

3.5

mg/l

Zinc trend

Zinc

0

0.5

1

1.5

2

2.5

3

3.5

mg/l

Zinc trend

Zinc

0 4

0.6

0.8

1

1.2

1.4

mg/l

Fe and Mn Trend

Manganese Iron

0

0.2

0.4

0.6

0.8

1

1.2

1.4

mg/l

Fe and Mn Trend

Manganese Iron

0 3

0.4

0.5

0.6

0.7

0.8

0.9

1

mg/l

Nickel trend

Nickel

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

mg/l

Nickel trend

Nickel

10

15

20

25

mg/l

Sulphate trend

Sulphate

0

5

10

15

20

25

mg/l

Sulphate trend

Sulphate

3

4

5

6

7

8

9

mg/l

Phosphate and Flouride Trend

Fluoride Phosphate

0

1

2

3

4

5

6

7

8

9

mg/l

Phosphate and Flouride Trend

Fluoride Phosphate

10

15

20

25

mg/l

Trend AllFluoride Phosphate

Sulphate Iron

Nickel Manganese

Zinc Lead

Lead Copper

Chromium total Chromate (Cr VI)

Actual pH

0

5

10

15

20

25

mg/l

Trend AllFluoride Phosphate

Sulphate Iron

Nickel Manganese

Zinc Lead

Lead Copper

Chromium total Chromate (Cr VI)

Actual pH

appendix f part ii.pdfno surface water was noted within the stream on the south eastern boundary of...

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