Whitehaven Coal : MCC - June 2024 EPL Monitoring Summary

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MAULES CREEK COAL MINE - MONTHLY MONITORING SUMMARY

Site Information

EPL No: 20221

EPA Website Link: Hyperlink to Maules Creek Coal, Environment Protection Licence

Licensee: Maules Creek Coal Mine Pty Ltd

Licensee Address: Maules Creek Coal Mine, Therribri Road, BOGGABRI NSW 2382

EPL Monitoring Points: See Figure 1 below

Sampling Period: June 2024

Obtained Date: 15th July 2024

Publication Date: 16th July 2024

Context: This Monthly Monitoring Summary aligns with the Environment Protection Licence (EPL) No. 20221 - Maules Creek Coal Mine issued 2nd August 2022 by the NSW Environment Protection Authority (EPA).

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Monthly Monitoring Summary

Ground Water Monitoring

Table 1 - Groundwater Quality Monitoring

ID

Parameters

Units

Frequency

Samples

Date

Laboratory

Min

Mean

Max / Only

EPL (Bore)

Results Received

Value

15

pH

pH

Conductivity

µs/cm

Quarterly

0

Dry

(BCM01)

TDS

mg/L

16

pH

pH

Conductivity

µs/cm

Quarterly

0

Dry

(BCM03)

TDS

mg/L

17

pH

pH

Conductivity

µs/cm

Quarterly

0

Dry

(REG10A)

TDS

mg/L

24

pH

pH

7.54

Conductivity

µs/cm

Quarterly

1

05/06/2024

15/07/2024

1950

(RB05A)

TDS

mg/L

1140

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Surface Water Monitoring

Table 2 - Surface Water Monitoring - Mine Void

ID	Parameter	Units	Frequency
EPL (Site)
	TSS	mg/L
12	Conductivity	µs/cm	Every 2
(Mine Void)	Oil & Grease	mg/L	months
	pH	pH

Samples	Date
1		06/06/2024

Laboratory Results

Received

15/07/2024

Min

NA

Mean

NA

Max / Only Value

5

1340

<5

8.35

Table 3 - Wet Weather Discharge - Surface Water Monitoring

ID

Laboratory

Min

Mean

Median

Parameter

Units

Frequency

Samples

Date

Results

Max / Only Value

EPL (Site)

Value

Value

Value

Received

Conductivity

µs/cm

Nitrate

mg/L

Special

Nitrogen (total)

mg/L

Frequency 1 -

Oil & Grease

mg/L

3

within 12

pH

pH

(SD3)

hours of

Phosphorous

mg/L

discharge from

Reactive

mg/L

EPL 3 or 36.

Phosphorous

TSS

mg/L

Conductivity

µs/cm

No discharge occurred from this monitoring location

Nitrate

mg/L

Nitrogen (total)

mg/L

Special

Oil & Grease

mg/L

Frequency 1 -

36

pH

pH

within 12

(SD12)

Phosphorous

mg/L

hours of

Reactive

mg/L

discharge from

Phosphorous

EPL 3 or 36

TSS

mg/L

Conductivity

µs/cm

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Table 4 - Clean Water Discharge - Surface Water Monitoring

ID						Laboratory	Min	Mean	Median	Max / Only
Parameter	Units	Frequency	Samples	Date	Results
EPL (Site)	Value	Value	Value	Value
					Received
	Conductivity	µs/cm	Special
	Nitrate	mg/L
	Frequency 3 -
	Nitrogen (total)	mg/L
38	within 12
Oil & Grease	mg/L
(Flow Meter	hours of
pH	pH
Upstream)	discharge
Phosphorous	mg/L
	from any
	Reactive
	mg/L	discharge
	Phosphorous
		location.
	TSS	mg/L			No discharge occurred during the reporting month
	Conductivity	µs/cm	Special
	Nitrate	mg/L
	Frequency 3 -
	Nitrogen (total)	mg/L
	within 12
39	Oil & Grease	mg/L
hours of
(Flow Meter	pH	pH
discharge
downstream)	Phosphorous	mg/L
from any
	Reactive
	mg/L	discharge
	Phosphorous
		location.
	TSS	mg/L
			Special
	TSS	mg/L	Frequency 2
			- prior to
			discharging
	Conductivity	µs/cm	from EPL 45
	and/or 46 or
40			within			No discharge occurred from these monitoring locations
(HWD8)			12hours of
	Oil & Grease	mg/L	discharge
	caused by
			38.4mm in a
			5 Day
	pH	pH	consecutive
			period

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ID						Laboratory	Min	Mean	Median	Max / Only
Parameter	Units	Frequency	Samples	Date	Results
EPL (Site)	Value	Value	Value	Value
					Received
			Special
	TSS	mg/L	Frequency 2
	- prior to
			discharging
			from EPL 45
	Conductivity	µs/cm	and/or 46 or
41			within
(HWD9)			12hours of
	Oil & Grease	mg/L	discharge
	caused by
			38.4mm in a
			5 Day
	pH	pH	consecutive
			period
			Special
	TSS	mg/L	Frequency 2
	- prior to
			discharging
			from EPL 45
	Conductivity	µs/cm	and/or 46 or
42			within
(HWD10)			12hours of
	Oil & Grease	mg/L	discharge
	caused by
			38.4mm in a
			5 Day
	pH	pH	consecutive
			period
			Special
	TSS	mg/L	Frequency 2
43			- prior to
		discharging			No discharge occurred from this monitoring location
(HWD11)
		from EPL 45
	Conductivity	µs/cm	and/or 46 or
			within

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ID						Laboratory	Min	Mean	Median	Max / Only
Parameter	Units	Frequency	Samples	Date	Results
EPL (Site)	Value	Value	Value	Value
					Received
			12hours of
	Oil & Grease	mg/L	discharge
	caused by
			38.4mm in a
			5 Day
	pH	pH	consecutive
			period
			Special
	TSS	mg/L	Frequency 2
			- prior to
			discharging
	Conductivity	µs/cm	from EPL 45
	and/or 46 or
44			within			No discharge occurred from this monitoring location
(WCWD)			12hours of
	Oil & Grease	mg/L	discharge
	caused by
			38.4mm in a
			5 Day
	pH	pH	consecutive
			period
	Oil & Grease	mg/L	Not more
45			than 12
pH	pH	hours after			No discharge occurred from this monitoring location
(ECWDP)
		discharge
	TSS	mg/L	commences
	Oil & Grease	mg/L	Not more
46			than 12
pH	pH	hours after			No discharge occurred from this monitoring location
(WCWDP)
		discharge
	TSS	mg/L	commences

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Noise Monitoring

Table 5 - Noise Monitoring (Attended - Measured)

					Limit LAeq		Limit
				MCCP		LA1 (1 min)
				15min (dB)	MCCP
		Start	Wind Speed	LAeq 15min	(dB)	Weather	Exceedance
MCC ID	Date		LAeq 1min
Time	(m/s)	dB			Rain (mm)	(Yes / No)
		Operations	dB
					Operations
					Criteria
						Criteria
NM1	10/06/2024	22:30	0.6	<25	35	<25	45	0.0	NA
NM2	10/06/2024	23:30	1.1	34	39	36	45	0.0	NA
NM3	11/06/2024	00:20	0.5	24	35	29	45	0.0	NA
NM4	10/06/2024	23:00	0.3	<25	35	<25	45	0.0	NA
NM5	10/06/2024	22:00	0.5	30	35	33	45	0.0	NA
NM6	10/06/2024	23:55	0.3	<20	35	23	45	0.0	NA

Noise Monitoring (Attended - Low Frequency Assessment)

None of the measurements satisfied the conditions for further assessment when assessed for the applicability of low frequency modification factors in accordance with the EPA's Noise Policy for Industry. Therefore, no further assessment of low frequency noise was required to be undertaken.

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Blast Monitoring

Table 6 - Blast Monitoring (Blasts - Limits Apply)

Location	Parameter	Units	Frequency	Number	Average	Max	100% Limit	Exceedance
(Yes / No)
Operations	Overpressure	Db (Lin Peak)	All	9	89.94	107.60	120	No
Blasts	Vibration	mm/s	9	0.08	0.17	10	No

Note: As of March 2018, in accordance with the requirements of the approved variation of EPL 20221; M7.1 blast monitoring results are for four blast monitoring points 31 (BM1), 32 (BM2), 33 (BM3) and 34 (BM4).

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Air Quality Monitoring

Table 7 - PM10 (Limits Apply)

ID	Sample			Rolling	NEPM	Exceedance
Unit	Parameter	Annual	Annual
EPL (Site)	period	(Yes / No)
		Average	Criteria
18	Continuous	µg/m3 month	PM10	10.9	30	No
(TEOM1)
37	Continuous	µg/m3 month	PM10	13.6	30	No
(TEOM3)
19	5 days	µg/m3	PM10	14.2	30	No
(HVAS)

Table 8 - Depositional Dust (Limits Apply)

			Rolling
ID	Sample	Particulates	Annual		Exceedance
Deposited	Average	Criteria
EPL (Site)	period	(Yes / No)
Matter	Insoluble
			Solids
20	Monthly	g/m2 month	2.0	4	No
(DDG1/MC1)
21	Monthly	g/m2 month	1.8	4	No
(DDG2/MC2)
22	Monthly	g/m2 month	1.7	4	No
(DDG3/MC3)
23	Monthly	g/m2 month	1.0	4	No
(DDG4/MC4)

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Figure 1 - EPL 20221 Monitoring Locations