Hopeland groundwater sampling results and findings
Bore locations map
Former Linc Energy bore sites
Kummerows Road bore sites
Former Mineral Development lease
Former Linc Energy Site – lot 40 DY85
Monitoring bores installed on the former Linc site – findings In 2017, the department installed a groundwater monitoring network around the perimeter of the former Linc site. In 2020, this network was expanded to include an additional two bores on the Linc site.
The Linc site is contaminated as a result of undertaking UCG activities, therefore it is expected that levels of benzene, cyanide and other contaminants are above guideline values.
Sampling on the Linc site has shown the presence of UCG contaminants benzene and total cyanide. However, the concentration of benzene and total cyanide generally indicate a decreasing trend over time.
These bores are not used for irrigation, or human or stock consumption.
As a result of the groundwater contamination on the former Linc site, it is listed on the Contaminated Land Register (CLR) which recognises that the site is heavily contaminated and requires ongoing monitoring and remediation.
Comprehensive results and terminology definitions from groundwater monitoring between 2018 and 2022 are available on the Hopeland environmental management web page.
Data is listed below for benzene and total cyanide levels in the 13 groundwater monitoring bores on the former Linc site since 2018. Benzene and total cyanide levels are the focus of the data on this page because they can be associated with UCG activities.
The tables below include samples collected from the perforated zone of the groundwater well as they are considered the most representative of the groundwater aquifer. The perforated zone is the area of the bore where water passes through. Samples collected from the top of the water column (denoted light non-aqueous phase liquid (LNAPL) and from the bottom of the water column (denoted dense non-aqueous phase liquid (DNAPL) are not included in the tables below because they are outside the perforated zone.
Results for these LNAPL and DNAPL samples are included in the comprehensive results that can be found on the Hopeland environmental management web page.
HSMB1S Location code Matrix type Date Cyanide total (mg/L)# Benzene (μg/L)
HSMB1S
Water
30/05/2018
755
HSMB1S
Water
20/06/2018
652
HSMB1S
Water
6/09/2018
547
HSMB1S 89.9m
Water
11/05/2019
388
HSMB1S 108.5m
Water
11/05/2019
538
HSMB1S
Water
17/07/2020
301
HSMB1S
Water
1/11/2020
256
HSMB1S
Water
19/01/2021
236
HSMB1S
Water
20/06/2021
0.360
228
HSMB1S
Water
30/10/2021
0.332
207
HSMB1S
Water
12/05/2022
0.303
108
HSMB1S
Water
29/07/2022
no sample
no sample
HSMB1S
Water
12/10/2022
0.323
109 HSMB1S Water 06/02/2023 0.307 108 HSMB1S Water 07/06/2023 0.280 120
HSMB1S Cyanide total (mg/L)
Show data
HSMB1S Cyanide total (mg/L) Date mg/L
20/06/2021
0.360
30/10/2021
0.332
12/05/2022
0.303
29/07/2022
0
12/10/2022
0.323 06/02/2023 0.307 07/06/2023 0.280
HSMB1S Benzene (μg/L)
Show data
HSMB1S Benzene (μg/L) Date μg/L
30/05/2018
755
20/06/2018
652
06/09/2018
547
11/05/2019
388
11/05/2019
538
17/07/2020
301
01/11/2020
256
19/01/2021
236
20/06/2021
228
30/10/2021
207
12/05/2022
108
29/07/2022
0
12/10/2022
109 06/02/2023 108 07/06/2023 120
HSMB1D Location code Matrix type Date Cyanide total (mg/L)# Benzene (μg/L)
HSMB1D
Water
30/05/2018
225
HSMB1D
Water
20/06/2018
153
HSMB1D
Water
6/09/2018
77
HSMB1D
Water
7/05/2019
9
HSMB1D
Water
15/03/2020
7
HSMB1D
Water
31/07/2020
3
HSMB1D
Water
5/12/2020
11
HSMB1D
Water
3/03/2021
0.936
18
HSMB1D
Water
8/07/2021
0.743
8
HSMB1D
Water
26/10/2021
0.560
21
HSMB1D
Water
10/05/2022
Failed QA checks*
Failed QA checks*
HSMB1D
Water
29/07/2022
Failed QA checks*
Failed QA checks*
HSMB1D
Water
12/10/2022
Failed QA checks*
Failed QA checks* HSMB1D Water 06/02/2023 Failed QA checks* Failed QA checks* HSMB1D Water 07/06/2023 Failed QA checks* Failed QA checks*
HSMB1D Cyanide total (mg/L)
Show data
HSMB1D Cyanide total (mg/L) Date mg/L
03/03/2021
0.936
08/07/2021
0.743
26/10/2021
0.560
10/05/2022
29/07/2022
12/10/2022 06/02/2023 07/06/2023
HSMB1D Benzene (μg/L)
Show data
HSMB1D Benzene (μg/L) Date μg/L
30/05/2018
225
20/06/2018
153
06/09/2018
77
07/05/2019
9
15/03/2020
7
31/07/2020
3
05/12/2020
11
03/03/2021
18
08/07/2021
8
26/10/2021
21
10/05/2022
29/07/2022
12/10/2022 06/02/2023 07/06/2023
HSMB2D Location code Matrix type Date Cyanide total (mg/L)# Benzene (μg/L)
HSMB2D
Water
31/05/2018
30
HSMB2D
Water
20/06/2018
49
HSMB2D
Water
4/09/2018
32
HSMB2D
Water
27/04/2019
27
HSMB2D
Water
10/07/2020
12
HSMB2D
Water
14/11/2020
11
HSMB2D
Water
24/01/2021
11
HSMB2D
Water
8/05/2021
0.394
14
HSMB2D
Water
21/09/2021
0.425
13
HSMB2D
Water
9/05/2022
Failed QA checks*
Failed QA checks*
HSMB2D
Water
29/07/2022
no sample
no sample
HSMB2D
Water
12/10/2022
no sample
no sample HSMB2D Water 03/02/2023 no sample no sample HSMB2D Water 07/06/2023 no sample no sample
HSMB2D Cyanide total (mg/L)
Show data
HSMB2D Cyanide total (mg/L) Date mg/L
24/01/2021
0
08/05/2021
0.394
21/09/2021
0.425
09/05/2022
29/07/2022
12/10/2022 03/02/2023 07/06/2023
HSMB2D Benzene (μg/L)
Show data
HSMB2D Benzene (μg/L) Date μg/L
31/05/2018
30
20/06/2018
49
04/09/2018
32
27/04/2019
27
10/07/2020
12
14/11/2020
11
24/01/2021
11
08/05/2021
14
21/09/2021
13
09/05/2022
29/07/2022
12/10/2022 03/02/2023 07/06/2023
HSMB2S Location code Matrix type Date Cyanide total (mg/L)# Benzene (μg/L)
HSMB2S
Water
31/05/2018
1020
HSMB2S
Water
21/06/2018
684
HSMB2S
Water
7/09/2018
681
HSMB2S 92.4m
Water
13/05/2019
313
HSMB2S 107m
Water
13/05/2019
518
HSMB2S
Water
23/03/2020
219
HSMB2S
Water
20/06/2020
214
HSMB2S
Water
21/06/2020
207
HSMB2S
Water
26/06/2020
211
HSMB2S
Water
1/12/2020
181
HSMB2S
Water
2/12/2020
195
HSMB2S
Water
2/12/2020
182
HSMB2S
Water
7/12/2020
181
HSMB2S
Water
23/02/2021
0.614
170
HSMB2S
Water
24/02/2021
0.633
133
HSMB2S
Water
1/03/2021
0.636
156
HSMB2S
Water
29/06/2021
0.438
164
HSMB2S
Water
30/06/2021
0.441
167
HSMB2S
Water
6/07/2021
0.445
139
HSMB2S
Water
14/09/2021
0.464
159
HSMB2S
Water
15/09/2021
0.449
163
HSMB2S
Water
20/09/2021
0.415
144
HSMB2S
Water
12/05/2022
0.430
102
HSMB2S
Water
2/08/2022
0.407
105
HSMB2S
Water
13/10/2022
0.478
97 HSMB2S Water 03/02/2023 0.388 109 HSMB2S Water 09/06/2023 0.380 110
HSMB2S Cyanide total (mg/L)
Show data
HSMB2S Cyanide total (mg/L) Date mg/L
23/02/2021
0.614
24/02/2021
0.633
01/03/2021
0.636
29/06/2021
0.438
30/06/2021
0.441
06/07/2021
0.445
14/09/2021
0.464
15/09/2021
0.449
20/09/2021
0.415
12/05/2022
0.430
02/08/2022
0.407
13/10/2022
0.478 03/02/2023 0.388 09/06/2023 0.380
HSMB2S Benzene (μg/L)
Show data
HSMB2S Benzene (μg/L) Date μg/L
31/05/2018
1020
21/06/2018
684
07/09/2018
681
13/05/2019
313
13/05/2019
518
23/03/2020
219
20/06/2020
214
21/06/2020
207
26/06/2020
211
01/12/2020
181
02/12/2020
195
02/12/2020
182
07/12/2020
181
23/02/2021
170
24/02/2021
133
01/03/2021
156
29/06/2021
164
30/06/2021
167
06/07/2021
139
14/09/2021
159
15/09/2021
163
20/09/2021
144
12/05/2022
102
02/08/2022
105
13/10/2022
97 03/02/2023 109 09/06/2023 110
HSMB3D1 Location code Matrix type Date Cyanide total (mg/L)# Benzene (μg/L)
HSMB3D1
Water
30/05/2018
95
HSMB3D1
Water
18/06/2018
78
HSMB3D1
Water
5/09/2018
69
HSMB3D1
Water
6/12/2018
64
HSMB3D1
Water
10/12/2018
44
HSMB3D1
Water
12/12/2018
below limit of reporting
HSMB3D1
Water
14/12/2018
16
HSMB3D1
Water
14/01/2019
21
HSMB3D1
Water
15/01/2019
23
HSMB3D1
Water
3/05/2019
16
HSMB3D1
Water
17/03/2020
16
HSMB3D1
Water
18/03/2020
14
HSMB3D1
Water
29/07/2020
12
HSMB3D1
Water
24/10/2020
10
HSMB3D1
Water
15/01/2021
10
HSMB3D1
Water
1/05/2021
0.041
9
HSMB3D1
Water
5/09/2021
0.052
9
HSMB3D1
Water
11/05/2022
0.040
6
HSMB3D1
Water
2/08/2022
0.036
6
HSMB3D1
Water
14/10/2022
0.031
5 HSMB3D1 Water 02/02/2023 0.028 5 HSMB3D1 Water 08/06/2023 0.031 5.6
HSMB3D1 Cyanide total (mg/L)
Show data
HSMB3D1 Cyanide total (mg/L) Date mg/L
15/01/2021
0
01/05/2021
0.041
05/09/2021
0.052
11/05/2022
0.040
02/08/2022
0.036
14/10/2022
0.031 02/02/2023 0.028 08/06/2023 0.031
HSMB3D1 Benzene (μg/L)
Show data
HSMB3D1 Benzene (μg/L) Date μg/L
30/05/2018
95
18/06/2018
78
05/09/2018
69
06/12/2018
64
10/12/2018
44
12/12/2018
14/12/2018
16
14/01/2019
21
15/01/2019
23
03/05/2019
16
17/03/2020
16
18/03/2020
14
29/07/2020
12
24/10/2020
10
15/01/2021
10
01/05/2021
9
05/09/2021
9
11/05/2022
6
02/08/2022
6
14/10/2022
5 02/02/2023 5 08/06/2023 5.6
HSMB3D2 Location code Matrix type Date Cyanide total (mg/L)# Benzene (μg/L)
HSMB3D2
Water
29/05/2018
35
HSMB3D2
Water
19/06/2018
26
HSMB3D2
Water
3/09/2018
18
HSMB3D2
Water
26/04/2019
7
HSMB3D2
Water
8/01/2020
2
HSMB3D2
Water
9/01/2020
3
HSMB3D2
Water
2/08/2020
2
HSMB3D2
Water
30/10/2020
4
HSMB3D2
Water
20/01/2021
2
HSMB3D2
Water
21/01/2021
1
HSMB3D2
Water
27/05/2021
0.112
3
HSMB3D2
Water
23/09/2021
0.078
2
HSMB3D2
Water
10/05/2022
Failed QA checks*
Failed QA checks*
HSMB3D2
Water
3/08/2022
Failed QA checks*
Failed QA checks*
HSMB3D2
Water
17/10/2022
Failed QA checks*
Failed QA checks* HSMB3D2 Water 02/02/2023 Failed QA checks* Failed QA checks* HSMB3D2 Water 08/06/2023 Failed QA checks* Failed QA checks*
HSMB3D2 Cyanide Total (mg/L)
Show data
HSMB3D2 Cyanide total (mg/L) Date mg/L
20/01/2021
0
21/01/2021
0
27/05/2021
0.112
23/09/2021
0.078
10/05/2022
03/08/2022
17/10/2022 02/02/2023 08/06/2023
HSMB3D2 Benzene (μg/L)
Show data
HSMB3D2 Benzene (μg/L) Date μg/L
29/05/2018
35
19/06/2018
26
03/09/2018
18
26/04/2019
7
08/01/2020
2
09/01/2020
3
02/08/2020
2
30/10/2020
4
20/01/2021
2
21/01/2021
1
27/05/2021
3
23/09/2021
2
10/05/2022
03/08/2022
17/10/2022 02/02/2023 08/06/2023
HSMB3S1 Location code Matrix type Date Cyanide total (mg/L)# Benzene (μg/L)
HSMB3S1
Water
29/05/2018
96
HSMB3S1
Water
21/06/2018
71
HSMB3S1
Water
4/09/2018
69
HSMB3S1
Water
3/12/2018
78
HSMB3S1
Water
4/12/2018
12
HSMB3S1
Water
10/12/2018
below limit of reporting
HSMB3S1
Water
15/01/2019
4
HSMB3S1
Water
15/01/2019
4
HSMB3S1 91.5m
Water
30/04/2019
5
HSMB3S1 107m
Water
30/04/2019
6
HSMB3S1
Water
21/03/2020
5
HSMB3S1
Water
19/06/2020
5
HSMB3S1
Water
22/10/2020
6
HSMB3S1
Water
3/02/2021
0.019
5
HSMB3S1
Water
8/02/2021
0.020
no sample
HSMB3S1
Water
28/04/2021
0.012
4
HSMB3S1
Water
3/09/2021
0.018
5
HSMB3S1
Water
11/05/2022
0.015
4
HSMB3S1
Water
2/08/2022
0.016
4
HSMB3S1
Water
14/10/2022
0.015
4 HSMB3S1 Water 02/02/2023 0.016 3 HSMB3S1 Water 08/06/2023 0.022 3.8
HSMB3S1 Cyanide total (mg/L)
Show data
HSMB3S1 Cyanide total (mg/L) Date mg/L
03/02/2021
0.019
08/02/2021
0.020
28/04/2021
0.012
03/09/2021
0.018
11/05/2022
0.015
02/08/2022
0.016
14/10/2022
0.015 02/02/2023 0.016 08/06/2023 0.022
HSMB3S1 Benzene (μg/L)
Show data
HSMB3S1 Benzene (μg/L) Date μg/L
29/05/2018
96
21/06/2018
71
04/09/2018
69
03/12/2018
78
04/12/2018
12
10/12/2018
0
15/01/2019
4
15/01/2019
4
30/04/2019
5
30/04/2019
6
21/03/2020
5
19/06/2020
5
22/10/2020
6
03/02/2021
5
08/02/2021
28/04/2021
4
03/09/2021
5
11/05/2022
4
02/08/2022
4
14/10/2022
4 02/02/2023 3 08/06/2023 3.8
HSMB3S2 Location code Matrix type Date Cyanide total (mg/L)# Benzene (μg/L)
HSMB3S2
Water
28/05/2018
77
HSMB3S2
Water
22/06/2018
1490
HSMB3S2
Water
7/09/2018
1330
HSMB3S2
Water
16/05/2019
46
HSMB3S2
Water
14/03/2020
15
HSMB3S2
Water
8/07/2020
50
HSMB3S2
Water
28/10/2020
65
HSMB3S2
Water
23/01/2021
48
HSMB3S2
Water
29/05/2021
0.110
32
HSMB3S2
Water
25/09/2021
0.098
17
HSMB3S2
Water
10/05/2022
0.086
7
HSMB3S2
Water
3/08/2022
0.074
8
HSMB3S2
Water
17/10/2022
0.083
7 HSMB3S2 Water 02/02/2023 0.079 10 HSMB3S2 Water 08/06/2023 0.084 12
HSMB3S2 Cyanide total (mg/L)
Show data
HSMB3S2 Cyanide total (mg/L) Date mg/L
23/01/2021
0
29/05/2021
0.110
25/09/2021
0.098
10/05/2022
0.086
03/08/2022
0.074
17/10/2022
0.083 02/02/2023 0.079 08/06/2023 0.084
HSMB3S2 Benzene (μg/L)
Show data
HSMB3S2 Benzene(μg/L) Date μg/L
28/05/2018
77
22/06/2018
1490
07/09/2018
1330
16/05/2019
46
14/03/2020
15
08/07/2020
50
28/10/2020
65
23/01/2021
48
29/05/2021
32
25/09/2021
17
10/05/2022
7
03/08/2022
8
17/10/2022
7 02/02/2023 10 08/06/2023 12
HSMB4D Location code Matrix type Date Cyanide total (mg/L)# Benzene (μg/L)
HSMB4D
Water
1/06/2018
79
HSMB4D
Water
18/06/2018
86
HSMB4D
Water
3/09/2018
91
HSMB4D
Water
9/05/2019
9
HSMB4D
Water
15/07/2020
4
HSMB4D
Water
22/11/2020
5
HSMB4D
Water
14/02/2021
1.03
6
HSMB4D
Water
18/06/2021
1.25
7
HSMB4D
Water
9/10/2021
1.12
12
HSMB4D
Water
11/05/2022
Failed QA checks*
Failed QA checks*
HSMB4D
Water
4/08/2022
Failed QA checks*
Failed QA checks*
HSMB4D
Water
18/10/2022
Failed QA checks*
Failed QA checks* HSMB4D Water 07/02/2023 Failed QA checks* Failed QA checks* HSMB4D Water 12/06/2023 Failed QA checks* Failed QA checks*
HSMB4D Cyanide total (mg/L)
Show data
HSMB4D Cyanide Total (mg/L) Date mg/L
14/02/2021
1.03
18/06/2021
1.25
09/10/2021
1.12
11/05/2022
04/08/2022
18/10/2022 07/02/2023 12/06/2023
HSMB4D Benzene (μg/L)
Show data
HSMB4D Benzene (μg/L) Date μg/L
01/06/2018
79
18/06/2018
86
03/09/2018
91
09/05/2019
9
15/07/2020
4
22/11/2020
5
14/02/2021
6
18/06/2021
7
09/10/2021
12
11/05/2022
04/08/2022
18/10/2022 07/02/2023 12/06/2023
HSMB4S Location code Matrix type Date Cyanide total (mg/L)# Benzene (μg/L)
HSMB4S
Water
1/06/2018
1060
HSMB4S
Water
19/06/2018
959
HSMB4S
Water
6/09/2018
1010
HSMB4S 96m
Water
15/05/2019
653
HSMB4S 107.5m
Water
15/05/2019
1240
HSMB4S
Water
23/06/2020
575
HSMB4S
Water
26/10/2020
475
HSMB4S
Water
17/01/2021
455
HSMB4S
Water
7/05/2021
0.422
434
HSMB4S
Water
19/09/2021
0.372
459
HSMB4S
Water
11/05/2022
0.416
287
HSMB4S
Water
4/08/2022
0.363
293
HSMB4S
Water
18/10/2022
0.422
302 HSMB4S Water 07/02/2023 0.377 298 HSMB4S Water 12/06/2023 0.310 300
HSMB4S Cyanide total (mg/L)
Show data
HSMB4S Cyanide total (mg/L) Date mg/L
17/01/2021
0
07/05/2021
0.422
19/09/2021
0.372
11/05/2022
0.416
04/08/2022
0.363
18/10/2022
0.422 07/02/2023 0.377 12/06/2023 0.310
HSMB4S Benzene (μg/L)
Show data
HSMB4S Benzene (μg/L) Date μg/L
01/06/2018
1060
19/06/2018
959
06/09/2018
1010
15/05/2019
653
15/05/2019
1240
23/06/2020
575
26/10/2020
475
17/01/2021
455
07/05/2021
434
19/09/2021
459
11/05/2022
287
04/08/2022
293
18/10/2022
302 07/02/2023 298 12/06/2023 300
HSMB5D Location code Matrix type Date Cyanide total (mg/L)# Benzene (μg/L)
HSMB5D
Water
4/06/2018
106
HSMB5D
Water
19/06/2018
100
HSMB5D
Water
5/09/2018
73
HSMB5D
Water
5/05/2019
27
HSMB5D
Water
9/01/2020
22
HSMB5D
Water
24/03/2020
20
HSMB5D
Water
11/07/2020
17
HSMB5D
Water
12/07/2020
12
HSMB5D
Water
18/07/2020
16
HSMB5D
Water
10/11/2020
15
HSMB5D
Water
11/11/2020
14
HSMB5D
Water
16/11/2020
14
HSMB5D
Water
4/02/2021
0.260
14
HSMB5D
Water
4/02/2021
0.269
no sample
HSMB5D
Water
5/02/2021
0.277
12
HSMB5D
Water
5/02/2021
0.282
no sample
HSMB5D
Water
10/02/2021
0.286
12
HSMB5D
Water
8/06/2021
0.223
13
HSMB5D
Water
9/06/2021
0.237
11
HSMB5D
Water
14/06/2021
0.212
12
HSMB5D
Water
7/10/2021
0.170
13
HSMB5D
Water
8/10/2021
0.198
8
HSMB5D
Water
12/10/2021
0.196
11
HSMB5D
Water
11/05/2022
no sample
no sample
HSMB5D
Water
4/08/2022
0.116
10
HSMB5D
Water
18/10/2022
0.140
9 HSMB5D Water 07/02/2023 0.115 9 HSMB5D Water 12/06/2023 0.097 11
HSMB5D Cyanide total (mg/L)
Show data
HSMB5D Cyanide total (mg/L) Date mg/L
04/02/2021
0.260
04/02/2021
0.269
05/02/2021
0.277
05/02/2021
0.282
10/02/2021
0.286
08/06/2021
0.223
09/06/2021
0.237
14/06/2021
0.212
07/10/2021
0.170
08/10/2021
0.198
12/10/2021
0.196
11/05/2022
04/08/2022
0.116
18/10/2022
0.140 07/02/2023 0.115 12/06/2023 0.097
HSMB5D Benzene (μg/L)
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HSMB5D Benzene (μg/L) Date μg/L
04/06/2018
106
19/06/2018
100
05/09/2018
73
05/05/2019
27
09/01/2020
22
24/03/2020
20
11/07/2020
17
12/07/2020
12
18/07/2020
16
10/11/2020
15
11/11/2020
14
16/11/2020
14
04/02/2021
14
04/02/2021
05/02/2021
12
05/02/2021
10/02/2021
12
08/06/2021
13
09/06/2021
11
14/06/2021
12
07/10/2021
13
08/10/2021
8
12/10/2021
11
11/05/2022
04/08/2022
10
18/10/2022
9 07/02/2023 9 12/06/2023 11
HSMB6S Location code Matrix type Date Cyanide total (mg/L) Benzene (μg/L) HSMB6S Water 20/04/2021 0.502 9 HSMB6S Water 23/05/2021 0.296 8 HSMB6S Water 28/08/2021 0.120 5 HSMB6S Water 12/05/2022 0.036 below limit of reporting HSMB6S Water 12/08/2022 no sample no sample HSMB6S Water 19/10/2022 no sample no sample HSMB6S Water 31/01/2023 0.015 2 HSMB6S Water 13/06/2023 0.036 2.8
HSMB6S Cyanide total (mg/L)
Show data
HSMB6S Cyanide total (mg/L) Date mg/L 20/04/2021 0.502 23/05/2021 0.296 28/08/2021 0.120 12/05/2022 0.036 12/08/2022 19/10/2022 31/01/2023 0.015 13/06/2023 0.036
HSMB6S Benzene (μg/L)
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HSMB6S Benzene (μg/L) Date μg/L 20/04/2021 9 23/05/2021 8 28/08/2021 5 12/05/2022 12/08/2022 19/10/2022 31/01/2023 2 13/06/2023 2.8
HSMB6D2 Location code Matrix type Date Cyanide total (mg/L) Benzene (μg/L)
HSMB6D2
Water
18/04/2021
0.115
below limit of reporting
HSMB6D2
Water
25/05/2021
0.079
below limit of reporting
HSMB6D2
Water
26/08/2021
0.057
below limit of reporting
HSMB6D2
Water
12/05/2022
0.050
below limit of reporting
HSMB6D2
Water
12/08/2022
no sample
no sample
HSMB6D2
Water
19/10/2022
no sample
no sample HSMB6D2 Water 31/01/2023 0.040 below limit of reporting HSMB6D2 Water 13/06/2023 0.037 below limit of reporting
HSMB6D2 Cyanide total (mg/L)
Show data
HSMB6D2 Cyanide total (mg/L) Date mg/L 18/04/2021 0.115 25/05/2021 0.079 26/08/2021 0.057 12/05/2022 0.050 12/08/2022 19/10/2022 31/01/2023 0.040 13/06/2023 0.037
HSMB6D2 Benzene (μg/L)
HSMB6D2 Benzene (μg/L) Date μg/L
14/04/2021
0
19/05/2021
0
01/09/2021
0
13/05/2022
0
12/08/2022
0
19/10/2022
0 31/01/2023 0 13/06/2023 0
*some samples failed quality assurance (QA) checks because the head pressure in the bores required distilled water to be introduced to safely install the pump and reduce gas generation. As a result, diluted bore water was sampled. The Department’s quality control program later determined that these results were not representative of the groundwater.
#sampling for cyanide commenced in early 2021 on the advice of experts.
Note: Some bores were sampled on the same day or on repeated days during the monitoring period. The sampling processes undertaken were conducted at specific phases to check the representativeness of the overall groundwater sampling programs.
Monitoring bores installed on Kummerows Road – findings In December 2020, as part of the further expansion of the groundwater monitoring network, two additional groundwater monitoring bores were installed in Kummerows Road. Kummerows Road is a narrow road reserve between 20-30 metres wide and the bores are approximately 650 metres west of the boundary of the Linc site.
Sampling of the Kummerows Road bores commenced in April 2021 and the timing of sampling was impacted by sufficient water being present and extreme weather events.
Landholders do not access water from the Kummerows Road bores – they exist solely for monitoring purposes. These bores are not used for irrigation, or human or stock consumption. The concentration of benzene and total cyanide generally indicate a decreasing trend over time.
Data is listed below for benzene and total cyanide in the two groundwater monitoring bores located at Kummerows Road.
Kummerows Road results – HSMB7S Location code Matrix type Date Cyanide total (mg/L) Benzene (μg/L) HSMB7S Water 16/04/2021 0.090 below limit of reporting HSMB7S Water 21/05/2021 0.078 below limit of reporting HSMB7S Water 30/08/2021 0.064 below limit of reporting HSMB7S Water 13/05/2022 0.014 below limit of reporting HSMB7S Water 12/08/2022 0.006 below limit of reporting HSMB7S Water 19/10/2022 0.006 below limit of reporting HSMB7S Water 10/02/2023 0.008 below limit of reporting HSMB7S Water 09/06/2023 0.011 below limit of reporting
Kummerows Road – HSMB7S Cyanide total (mg/L)
Show data
Kummerows Road – HSMB7S Cyanide total (mg/L) Date mg/L
16/04/2021
0.090
21/05/2021
0.078
30/08/2021
0.064
13/05/2022
0.014
12/08/2022
0.006 19/10/2022 0.006 10/02/2023 0.008 09/06/2023 0.011
Kummerows Road – HSMB7S Benzene (μg/L)
Kummerows Road – HSMB7S Benzene (μg/L) Date μg/L
16/04/2021
0
21/05/2021
0
30/08/2021
0
13/05/2022
0
12/08/2022
0 19/10/2022 0 10/02/2023 0 09/06/2023 0
Kummerows Road Results – HSMB7D Location code Matrix type Date Cyanide total (mg/L) Benzene (μg/L)
HSMB7D
Water
14/04/2021
0.717
18
HSMB7D
Water
19/05/2021
0.936
25
HSMB7D
Water
1/09/2021
0.707
17
HSMB7D
Water
13/05/2022
0.684
13
HSMB7D Water
12/08/2022
0.649
12 HSMB7D Water 19/10/2022 0.618 11 HSMB7D Water 10/02/2023 0.584 12 HSMB7D Water 09/06/2023 0.480 10
Kummerows Road – HSMB7D Cyanide total mg/L
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Kummerows Road – HSMB7D Cyanide total (mg/L) Date mg/L
14/04/2021
0.717
19/05/2021
0.936
01/09/2021
0.707
13/05/2022
0.684
12/08/2022
0.649 19/10/2022 0.618 10/02/2023 0.584 09/06/2023 0.480
Kummerows Road – HSMB7D Benzene (μg/L)
Show data
Kummerows Road – HSMB7D Benzene (μg/L) Date μg/L
14/04/2021
18
19/05/2021
25
01/09/2021
17
13/05/2022
13
12/08/2022
12 19/10/2022 11 10/02/2023 12 09/06/2023 10
Monitoring bores installed on private property – findings Since 2015, more than 130 samples have been taken and analysed from landholders’ bores.
The results of this groundwater sampling have been provided directly to those landowners.
The monitoring within landholder bores has found that Underground Coal Gasification (UCG) contaminants benzene or total cyanide have not impacted the water quality values in landholder bores.
As a result, the current risk to nearby landholders has been assessed as low to negligible.