Ground Floor, Bay Suites 1a Humewood Road Humerail Port Elizabeth, 6001 P O Box 21842 Port Elizabeth 6000 South Africa T: +27 (0) 41 509 4800 F: +27 (0) 41 509 4850 E: [email protected]www.srk.co.za Partners R Armstrong, AH Bracken, N Brien, JM Brown, CD Dalgliesh, BM Engelsman, R Gardiner, M Hinsch, W Jordaan, WC Joughin, DA Kilian, S Kisten, JA Lake, V Maharaj, DJ Mahlangu, I Mahomed, HAC Meintjes, MJ Morris, GP Nel, VS Reddy, PJ Shepherd, MJ Sim, VM Simposya, HFJ Theart, KM Uderstadt, AT van Zyl, MD Wanless, ML Wertz, A Wood Directors AJ Barrett, CD Dalgliesh, WC Joughin, V Maharaj, VS Reddy, PE Schmidt, PJ Shepherd Associate Partners PJ Aucamp, S Bartels, LSE Coetser, SG Jones, F Lake, L Linzer, L Nedeljkovic, RD O’Brien, S Reuther, T Shepherd, JJ Slabbert, JS Stiff, M van Huyssteen, D Visser Consultants JR Dixon, PrEng; GC Howell, PrEng; T Hart, MA, TTHD; PR Labrum, PrEng; RRW McNeill, PrTech Eng; PN Rosewarne, PrSci Nat, MSc; AA Smithen, PrEng; TR Stacey, PrEng, DSc; OKH Steffen, PrEng, PhD; PJ Terbrugge, PrSci Nat, MSc; DJ Venter; PrTech Eng SRK Consulting (South Africa) (Pty) Ltd Reg No 1995.012890.07 African Offices: Cape Town + 27 (0) 21 659 3060 Durban + 27 (0) 31 279 1200 East London + 27 (0) 43 748 6292 Johannesburg + 27 (0) 11 441 1111 Pietermaritzburg + 27 (0) 33 347 5069 Port Elizabeth + 27 (0) 41 509 4800 Pretoria + 27 (0) 12 361 9821 Rustenburg + 27 (0) 14 594 1280 Accra + 23 (3) 24 485 0928 Lubumbashi + 243 (0) 81 999 9775 Group Offices: Africa Asia Australia Europe North America South America 20 November 2018 527454 Quest Petroleum (Pty) Ltd 7 Chrysler Street Markman Port Elizabeth Attention: Mr Andrew Paterson Dear Mr Paterson Yield Testing of a Borehole at Quest Petroleum Logistics Park in Greenbushes, Port Elizabeth 1. Introduction SRK Consulting South Africa (Pty) Ltd (SRK) was appointed by Quest Petroleum (Pty) Ltd to conduct a yield test on an existing borehole on their Site in Greenbushes. The location of the borehole was verified before the test commenced (refer to Figure 1). SRK understands that the Client is in the process of obtaining a Water Use License for the borehole. Therefore the yield testing results are necessary to inform the application. 2. Scope of Works The Scope of Works agreed upon is as follows: Yield testing of existing borehole: Yield testing will be conducted in accordance with the specification of the Department of Water and Sanitation (DWS), and will deliver a maximum recommended yield for the borehole. SRK recommended the following tests: 4 x 1 hour stepped discharge tests, followed by recovery testing; and 24 hour constant discharge rate testing, followed by recovery testing. Water Sampling: A water sample will be collected from the borehole during the yield testing and submitted to a laboratory for analysed of selected parameters. Reporting: The results of the investigation will be summarised and reported to the Client.
Partners R Armstrong, AH Bracken, N Brien, JM Brown, CD Dalgliesh, BM Engelsman, R Gardiner, M Hinsch,
W Jordaan, WC Joughin, DA Kilian, S Kisten, JA Lake, V Maharaj, DJ Mahlangu, I Mahomed, HAC Meintjes, MJ Morris, GP Nel, VS Reddy, PJ Shepherd, MJ Sim, VM Simposya, HFJ Theart, KM Uderstadt, AT van Zyl, MD Wanless, ML Wertz, A Wood Directors AJ Barrett, CD Dalgliesh, WC Joughin, V Maharaj, VS Reddy, PE Schmidt, PJ Shepherd Associate Partners PJ Aucamp, S Bartels, LSE Coetser, SG Jones, F Lake, L Linzer, L Nedeljkovic, RD O’Brien,
S Reuther, T Shepherd, JJ Slabbert, JS Stiff, M van Huyssteen, D Visser Consultants JR Dixon, PrEng; GC Howell, PrEng; T Hart, MA, TTHD; PR Labrum, PrEng; RRW McNeill, PrTech Eng; PN Rosewarne, PrSci Nat, MSc; AA Smithen, PrEng; TR Stacey, PrEng, DSc; OKH Steffen, PrEng, PhD; PJ Terbrugge, PrSci Nat, MSc; DJ Venter; PrTech Eng
SRK Consulting (South Africa) (Pty) Ltd Reg No 1995.012890.07
African Offices:
Cape Town + 27 (0) 21 659 3060
Durban + 27 (0) 31 279 1200
East London + 27 (0) 43 748 6292
Johannesburg + 27 (0) 11 441 1111
Pietermaritzburg + 27 (0) 33 347 5069
Port Elizabeth + 27 (0) 41 509 4800
Pretoria + 27 (0) 12 361 9821
Rustenburg + 27 (0) 14 594 1280
Accra + 23 (3) 24 485 0928
Lubumbashi + 243 (0) 81 999 9775
Group Offices:
Africa
Asia
Australia
Europe
North America
South America
20 November 2018 527454 Quest Petroleum (Pty) Ltd 7 Chrysler Street Markman Port Elizabeth
Attention: Mr Andrew Paterson
Dear Mr Paterson
Yield Testing of a Borehole at Quest Petroleum Logistics Park in Greenbushes, Port Elizabeth
1. Introduction
SRK Consulting South Africa (Pty) Ltd (SRK) was appointed by Quest Petroleum (Pty) Ltd to conduct a yield
test on an existing borehole on their Site in Greenbushes. The location of the borehole was verified before the
test commenced (refer to Figure 1). SRK understands that the Client is in the process of obtaining a Water
Use License for the borehole. Therefore the yield testing results are necessary to inform the application.
2. Scope of Works
The Scope of Works agreed upon is as follows:
Yield testing of existing borehole: Yield testing will be conducted in accordance with the specification of
the Department of Water and Sanitation (DWS), and will deliver a maximum recommended yield for the
borehole. SRK recommended the following tests:
4 x 1 hour stepped discharge tests, followed by recovery testing; and
24 hour constant discharge rate testing, followed by recovery testing.
Water Sampling: A water sample will be collected from the borehole during the yield testing and submitted
to a laboratory for analysed of selected parameters.
Reporting: The results of the investigation will be summarised and reported to the Client.
Maximum Recommended Abstraction Rate: Maximum 24 hr/day Pumping Period
0.5 L/s
Maximum Recommended Abstraction Rate: Maximum 12 hr/day Pumping Period (and 12 hr/day resting)
0.7 L/s
Static Water Level 14.5 m bgl
▲Expected Dynamic Water Level for 24 hr/day abstraction 24.22 m bgl
Expected Dynamic Water Level for 12 hr/day abstraction 27.92 m bgl
Critical Water Level 60 m bgl
Recommended Pump Depth 70 m bgl
Maximum volume per day (24 hr/day abstraction) 43 200 L
Maximum volume per day (12 hr/day abstraction) 30 240 L
Notes:
The static water level in a borehole is the groundwater level that is not influenced by abstraction. ▲The dynamic water level in a borehole is the steady level to which groundwater falls when it is being pumped
The critical water level in a borehole is the groundwater level below which the water table should not be lowered during pumping.
Please note that the pumping tests provide a glimpse of the nature of the aquifer during the specific time-
period that the yield tests are conducted. However, the nature of the aquifer (recharge, recovery, water level
etc.) can be determined much more accurately if water level is monitored throughout the lifetime / use of the
borehole. The borehole’s water levels and recharge will vary depending on the recharge of the aquifer from
rainfall, abstraction from other groundwater users nearby etc. Recharge of the aquifer may be local, or may
come from rainfall events many kilometres away.
3.3 Water Quality Results
A water sample was collected at the borehole during the constant discharge rate test and sent for analysis at
Talbot Laboratories. The results are viewed in relation to the SANS 241-1:2015 Standard for Drinking Water
(SANS 241), and given in Table 2 below. Values that exceeded the SANS 241 standard is highlighted in blue
underlined text. The laboratory certificates are attached in Appendix B.
Table 2: Laboratory Results
Parameters SANS 241:2015 Standard for
Drinking Water Quest Petroleum Greenbushes Borehole
mg/L unless otherwise stated ≤ value
pH 5 - 9.7 6.6
Conductivity (mS/m) 170 360
Apparent Colour 15 <1
Turbidity 1
18.2 5
Total Alkalinity as CaCO3 No Standard 121
Total Hardness as CaCO3 No Standard 477
Calcium as Ca No Standard 80
SRK Consulting Page 4
KRUR/NELG 527454_Quest Logistic Park Yield Testing Analysis Report Nov2018 November 18
Parameters SANS 241:2015 Standard for
Drinking Water Quest Petroleum Greenbushes Borehole
mg/L unless otherwise stated ≤ value
Magnesium as Mg No Standard 67
Sodium 200 610
Potassium No Standard 4.97
Chloride 300 1024
Sulphate 250
71.4 500
Fluoride 1.5 0.22
Nitrate as N 11 0.18
Nitrite as N 0.9 <0.01
Ammonia as N 1.5 8.88
Dissolved Aluminium 0.3 0.0033
Dissolved Antimony 0.02 0.00097
Dissolved Arsenic 0.01 0.00011
Dissolved Boron 2.4 0.221
Dissolved Barium 0.7 0.0165
Dissolved Cadmium 0.003 <0.0001
Dissolved Chromium 0.05 0.00180
Dissolved Copper 2 0.00210
Dissolved Iron 0.3
0.676 2
Dissolved Mercury 0.006 <0.00015
Dissolved Manganese 0.1
0.040 0.4
Dissolved Nickel 0.07 0.00424
Dissolved Lead 0.01 <0.00029
Dissolved Selenium 0.04 <0.00024
Dissolved Zinc 5 0.099
Cyanide 0.2 <0.020
Total Organic Carbon (TOC) 1200 <1
Total Coliforms 10 2
Faecal Coliforms Not detected 0
E.coli Not detected 0
Notes: Blue underlined values: Exceeds the SANS 241:2015 Standard for Drinking Water
The majority of parameters does not exceed the SANS 241 Standard. The following are exceptions:
Conductivity, turbidity, sodium, chloride and ammonia.
Conductivity, sodium and chloride are all measures of salinity in the groundwater. Turbidity is a measure of
the presence of suspended particles in the water, and the degree to which the water loses its transparency
due to this. Turbidity is often high following drilling, but reduces with time as the borehole is pumped. Ammonia
concentrations may be an indicator of faecal pollution or the presence of fertiliser on the Site. SRK
recommends chlorination of all groundwater, where practically possible.
SRK Consulting Page 5
KRUR/NELG 527454_Quest Logistic Park Yield Testing Analysis Report Nov2018 November 18
4. Conclusions
The following can be highlighted:
According to the yield testing data, the maximum daily volume of water obtainable from the borehole is
43 200 L/day. This is attainable by pumping the borehole at a rate of 0.5 L/s for 24 hours a day.
Should less water be needed, then the borehole can be pumped at a lower rate, and thus a lower-yielding
pump can be installed. However, it is important to note that the recommended abstraction rate must not
be exceeded, even if fewer hours are pumped. The focus is therefore on the abstraction yield and not the
total daily abstraction volume.
Parameters that exceed the SANS 241 Standard for Drinking Water (2015) in the borehole is conductivity,
turbidity, sodium, chloride and ammonia.
Yours faithfully,
Riona Kruger (Pr Sci Nat) Gert Nel (Pr Sci Nat) Principal Geoscientist Principal Hydrogeologist & Partner
SRK Consulting (South Africa) (Pty) Ltd
SRK Consulting Page 6
KRUR/NELG 527454_Quest Logistic Park Yield Testing Analysis Report Nov2018 November 18
Appendix A: Yield Testing Results
SPRAYMOR
GROUND WATER SERVICES
110
Average Yield (l/s):
24016.06
Average Yield (l/s):
240
210
180
Average Yield (l/s):
240
210
240240
60
16.49 90
16.42 100100
90
16.81
16.66
60
70
80
30
40
TIME WATER LEVEL
60.52
40
7
20
TIME WATER LEVEL
120 120
100100 100
110
80 80
90
80
90
60
110
100
150
120 120120
110
150
60
40 21.12
3030 20.93.
60 21.24 60
Project: QUEST GREENBUSHES 31/010/2018
67.4130
15 57.41
11 17.48 1 1
28.44
3
40
30
20
15
60
50
90
70
80
70
100
90
80
120
110
16.22 150
18016.17
DATE & TIMEDATE & TIMEDATE & TIME
16.10
150
90
120
210
16.57 80
DISCHARGE RATE 4 RPM
150
RPM
Average Yield (l/s):
150
DISCHARGE RATE 6
150
Average Yield (l/s): Average Yield (l/s):
180
150
180180
150
210210
180
120
110110
120
16.37
120
110
16.33
150
100
90
100
8080 80
90
100
70
20.34
7070
50 50
60
70
50
17.31
17.02
17.97
50
60
50
60
30 30
4040
30
40
20
15
30
10 30.36 10
36.87 77
1
(m)(min)
3
22
3
1
3 3
22
YIELD
(l/s) (min) (m)
YIELD TIME
(min)
TIME
1
RECOVERY
1
RECOVERY
(l/s) (min)(m)
YIELD TIME
1
256.19
51.64
WATER LEVEL
(min)(m)
43.30
2020
10
1515
10
20
10
5 5 5
150
7
3
RECOVERY
(m)
5
15
5
90
110 110
70
60
5050 21.20
70
50 29.52
70
29.67
3029.0630
40 40 71.4529.31 40
5050
40
10 20.39
15 20.59
20 20.80
15 27.91 1515
20
10
20
25.415 19.69
7 77 19.99
2 18.54 2 22 31.9422 22.80
726.18
5
3 18.97
10
3
38.47
3
10 46.53
41.39 7
5 1.80 55 5
20 62.02
34.12
(min)
30.571 22.05 1
20
26.95 10
3 0.92 3
7
10
1/11.2018
YIELD
DISCHARGE RATE 1
1/11.2018
YIELD TIMEYIELD TIMERECOVERYTIME
DATE & TIME:
WATER LEVEL TIME WATER LEVEL
RPMDISCHARGE RATE 2
WATER LEVEL
1/11.2018
DISCHARGE RATE 3
RECOVERY
DATE & TIME:
TIME
(l/s) (min) (m)(m)(m)(min) (m) (l/s) (min)
Borehole No:SRK Date Started:
14.50MBorehole Depth
(m bgl):
CO-ORDINATES:
33.944807
25.410147
RECOVERY
(min)(l/s)(m)(min)
0.45 23.97
(m)
STEPPED DISCHARGE TEST & RECOVERY
Water Level
before test (m
bgl):
74M
RPM
DATE & TIME:
TIME
RPM
Stepped Discharge
Test and Recovery
Testing78M
Test Pump
Installation depth (m
bgl):
120
80
100
110
90
70
DATUM ABOVE CASING …30MM
180
210
240
180
210
240
300
210
240
180
210
240
180
210
240
180
210
240
RPMDISCHARGE RATE 5
(min)
TIME
7
23.61 15
SRK Consulting Page 7
KRUR/NELG 527454_Quest Logistic Park Yield Testing Analysis Report Nov2018 November 18
Date Started: 31/10/2018
Test Pump
Installation
Depth (m bgl):
74M
Time Water Level Yield Time RecoveryTime Water Level Recovery Time Water Level Recovery Time Water Level Recovery
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