Whitehaven Coal : MCC - Highwall Dams December 2022

Data range of report		1/10/2022 to 31/12/2022	Rainfall Depth (mm)	306
	Dam Name		HWD8
	Latest field data				ML
pH		0	Minimum sensor level		0.9
EC	us/cm	0	Minimum pump level		2.0
TSS	mg/L	0	Spillway		15.8
OG	mg/L	0	Current level		<0.1
			Notes

HWD8 had no inflows over the reporting period. The water level is below the minimum operating level of the dams

equipment and there is insufficient water to take a water quality sample from

HWD Recorded Data

		Maules Creek Coal Mine
	30	HWD8 Storage Data
					80
	25				70
	20				60
(ML)					50	(mm)
15
Volume				40	Rainfall
	10				30
					20
	5				10
	0				0
	Rainfall (mm)	MinimumPump Level	Min Sensor Level	Current WL	Spillway

Latest Photo - 24/01/2023

Quarterly data

	Rainfall	Inflow	Pumped	Spilled	Receiving				Oil and
Date	environment	pH	EC	TSS
	(mm)	(ML)	(ML)	(ML)	(ML)				Grease
1/10/2022	0.4	0	0	0	0
2/10/2022	0	0	0	0	0
3/10/2022	0	0	0	0	0
4/10/2022	0	0	0	0	0
5/10/2022	2.6	0	0	0	0
6/10/2022	0.2	0	0	0	0
7/10/2022	20	0	0	0	0
8/10/2022	27	0	0	0	0
9/10/2022	0	0	0	0	0
10/10/2022	0	0	0	0	0
11/10/2022	0	0	0	0	0
12/10/2022	0	0	0	0	0
13/10/2022	0	0	0	0	0
14/10/2022	7	0	0	0	0
15/10/2022	0	0	0	0	0
16/10/2022	0	0	0	0	0
17/10/2022	0	0	0	0	0
18/10/2022	0	0	0	0	0
19/10/2022	6	0	0	0	0
20/10/2022	24	0	0	0	0
21/10/2022	81	0	0	0	0
22/10/2022	7	0	0	0	0
23/10/2022	0	0	0	0	0
24/10/2022	0	0	0	0	0
25/10/2022	0	0	0	0	0
26/10/2022	0	0	0	0	0
27/10/2022	0	0	0	0	0
28/10/2022	0	0	0	0	0
29/10/2022	0	0	0	0	0
30/10/2022	0	0	0	0	0
31/10/2022	1	0	0	0	0
1/11/2022	46	0	0	0	0
2/11/2022	0	0	0	0	0
3/11/2022	0	0	0	0	0
4/11/2022	0	0	0	0	0
5/11/2022	0	0	0	0	0
6/11/2022	0	0	0	0	0
7/11/2022	12	0	0	0	0
8/11/2022	2	0	0	0	0
9/11/2022	0	0	0	0	0
10/11/2022	0	0	0	0	0
11/11/2022	0	0	0	0	0
12/11/2022	0	0	0	0	0
13/11/2022	21	0	0	0	0
14/11/2022	30	0	0	0	0
15/11/2022	0	0	0	0	0
16/11/2022	0	0	0	0	0
17/11/2022	0	0	0	0	0
18/11/2022	0	0	0	0	0
19/11/2022	0	0	0	0	0
20/11/2022	0	0	0	0	0
21/11/2022	0	0	0	0	0
22/11/2022	0	0	0	0	0
23/11/2022	0	0	0	0	0
24/11/2022	0	0	0	0	0
25/11/2022	0	0	0	0	0
26/11/2022	0	0	0	0	0
27/11/2022	0	0	0	0	0
28/11/2022	0	0	0	0	0

	Date	Rainfall	Inflow	Pumped	Spilled	Receicing	pH	EC	TSS	Oil and
	environment
	(mm)	(ML)	(ML)	(ML)	Grease
		(ML)
	29/11/2022	0	0	0	0	0
	30/11/2022	1.0	0	0	0	0
	1/12/2022	0	0	0	0	0
	2/12/2022	0	0	0	0	0
	3/12/2022	0	0	0	0	0
	4/12/2022	0	0	0	0	0
	5/12/2022	0	0	0	0	0
	6/12/2022	0	0	0	0	0
	7/12/2022	0	0	0	0	0
	8/12/2022	0	0	0	0	0
	9/12/2022	0	0	0	0	0
	10/12/2022	0	0	0	0	0
	11/12/2022	0	0	0	0	0
	12/12/2022	14	0	0	0	0
	13/12/2022	0	0	0	0	0
	14/12/2022	0	0	0	0	0
	15/12/2022	0	0	0	0	0
	16/12/2022	0	0	0	0	0
	17/12/2022	0	0	0	0	0
	18/12/2022	0	0	0	0	0
	19/12/2022	0	0	0	0	0
	20/12/2022	0	0	0	0	0
	21/12/2022	0	0	0	0	0
	22/12/2022	0	0	0	0	0
	23/12/2022	1.4	0	0	0	0
	24/12/2022	0.4	0	0	0	0
	25/12/2022	0	0	0	0	0
	26/12/2022	0	0	0	0	0
	27/12/2022	0	0	0	0	0
	28/12/2022	0	0	0	0	0
	29/12/2022	0	0	0	0	0
	30/12/2022	0	0	0	0	0
	31/12/2022	0	0	0	0	0

Data range of report			1/10/2022 to 31/12/2022	Rainfall Depth (mm)	306
	Dam Name		HWD9
	Latest field data					ML
pH		7.06		Minimum sensor level		0.8
EC	us/cm	170		Minimum pump level		2.5
TSS	mg/L	142		Spillway		20.1
OG	mg/L	<5		Current level		2.8

Notes

13 ML of inflows compared to 10.2ML pumped to the receiving environment.

HWD Recorded Data

		Maules Creek Coal Mine
	30	HWD9 Storage Data
					80
	25				70
	20				60
(ML)					50	(mm)
15
Volume				40	Rainfall
	10				30
					20
	5				10
	0				0
	Rainfall (mm)	Minimum Pump Level	Min Sensor Level	Current WL	Spillway

Latest Photo - 24/01/2023

Quarterly data

	Rainfall	Inflow	Pumped	Spilled	Receiving				Oil and
Date	environment	pH	EC	TSS
(mm)	(ML)	(ML)	(ML)	Grease
	(ML)
1/10/2022	0.4	0.0	0.0	0.0	0.0
2/10/2022	0.0	0.0	0.0	0.0	0.0
3/10/2022	0.0	0.0	0.0	0.0	0.0
4/10/2022	0.0	0.0	0.0	0.0	0.0
5/10/2022	2.6	0.0	0.0	0.0	0.0
6/10/2022	0.2	0.0	0.0	0.0	0.0
7/10/2022	19.6	0.2	0.0	0.0	0.0
8/10/2022	27.4	0.3	0.0	0.0	0.0
9/10/2022	0.0	0.4	0.0	0.0	0.0
10/10/2022	0.2	0.0	0.0	0.0	0.0
11/10/2022	0.0	0.0	0.0	0.0	0.0
12/10/2022	0.0	0.0	0.0	0.0	0.0	6.6	200	55	<10
13/10/2022	0.0	0.0	0.0	0.0	0.0
14/10/2022	7.0	0.0	0.0	0.0	0.0
15/10/2022	0.0	0.0	0.0	0.0	0.0
16/10/2022	0.0	0.0	0.0	0.0	0.0
17/10/2022	0.0	0.0	0.0	0.0	0.0
18/10/2022	0.0	0.0	0.0	0.0	0.0
19/10/2022	6.4	0.0	0.0	0.0	0.0
20/10/2022	24.4	0.0	0.0	0.0	0.0
21/10/2022	80.8	0.6	0.0	0.0	0.0
22/10/2022	7.4	0.8	0.0	0.0	0.0
23/10/2022	0.2	0.5	0.0	0.0	0.0
24/10/2022	0.0	0.4	0.0	0.0	0.0
25/10/2022	0.0	0.4	0.0	0.0	0.0
26/10/2022	0.0	0.4	0.0	0.0	0.0
27/10/2022	0.0	0.2	0.0	0.0	0.0
28/10/2022	0.0	0.0	0.0	0.0	0.0
29/10/2022	0.0	0.0	0.0	0.0	0.0
30/10/2022	0.0	0.0	0.0	0.0	0.0
31/10/2022	0.6	0.2	0.0	0.0	0.0
1/11/2022	46.2	1.2	1.0	0.0	1.0	7.1	170	142	<5
2/11/2022	0.0	0.7	2.1	0.0	2.1
3/11/2022	0.0	0.0	1.1	0.0	1.1
4/11/2022	0.0	0.0	0.0	0.0	0.0
5/11/2022	0.0	0.0	0.0	0.0	0.0
6/11/2022	0.0	0.0	0.0	0.0	0.0
7/11/2022	12.0	0.2	0.0	0.0	0.0
8/11/2022	1.6	0.2	0.0	0.0	0.0
9/11/2022	0.0	0.0	0.0	0.0	0.0
10/11/2022	0.0	0.0	0.0	0.0	0.0
11/11/2022	0.0	0.0	0.0	0.0	0.0
12/11/2022	0.0	0.0	0.8	0.0	0.8
13/11/2022	21.2	1.7	0.0	0.0	0.0
14/11/2022	30.2	3.4	0.2	0.0	0.2	7.1	180	169	<5
15/11/2022	0.0	0.2	1.2	0.0	1.2
16/11/2022	0.0	0.0	1.3	0.0	1.3
17/11/2022	0.0	0.0	0.0	0.0	0.0
18/11/2022	0.0	0.0	2.5	0.0	2.5
19/11/2022	0.0	0.0	0.0	0.0	0.0
20/11/2022	0.0	0.0	0.0	0.0	0.0
21/11/2022	0.0	0.0	0.0	0.0	0.0
22/11/2022	0.0	0.0	0.0	0.0	0.0
23/11/2022	0.0	0.0	0.0	0.0	0.0
24/11/2022	0.0	0.0	0.0	0.0	0.0
25/11/2022	0.0	0.0	0.0	0.0	0.0
26/11/2022	0.0	0.0	0.0	0.0	0.0
27/11/2022	0.0	0.0	0.0	0.0	0.0
28/11/2022	0.0	0.0	0.0	0.0	0.0