Whitehaven Coal : MCC - EPL Monitoring Summary September 2021

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: September 2021

Obtained Date: 15 October 2021

Publication Date: 21 October 2021

Context: This Monthly Monitoring Summary aligns with the Environment Protection Licence (EPL) No. 20221 - Maules Creek Coal Mine issued 7th March 2018 by the NSW Environment Protection Authority (EPA).

Monthly Monitoring Summary

Table 1 - Wet Weather Discharge - Surface Water Monitoring

ID							Laboratory	Min	Mean	Median	Max / Only
Parameter	Units	Frequency		Samples	Date	Results
EPL (Site)		Value	Value	Value	Value
						Received
	TSS	mg/L	Special
2	Conductivity	µs/cm
Frequency
(SD2)	Oil & Grease	mg/L
Discharge only
	pH	pH
	TSS	mg/L	Special
3	Conductivity	µs/cm
Frequency
(SD3)	Oil & Grease	mg/L
Discharge only
	pH	pH
	TSS	mg/L	Special
5	Conductivity	µs/cm
Frequency				No discharge at this location this month.
(SD5)	Oil & Grease	mg/L
Discharge only
	pH	pH
	TSS	mg/L	Special
7	Conductivity	µs/cm
Frequency
(SD7)	Oil & Grease	mg/L
Discharge only
	pH	pH
	TSS	mg/L	Special
9	Conductivity	µs/cm
Frequency
(SD9)	Oil & Grease	mg/L
Discharge only
	pH	pH

Table 2 - Surface Water Monitoring - Mine Void

ID	Parameter	Units	Frequency	Samples	Date	Laboratory Results	Min	Mean	Max /	Only
EPL (Site)	Received	Value
	TSS	mg/L		1		Yes			40
12	Conductivity	µs/cm	Every 2	1	10/09/2021	Yes			1140
(Mine Void)	Oil & Grease	mg/L	months	1	Yes			<5
	pH	pH		1		Yes			8.19

Table 3 - Groundwater Quality Monitoring

ID

Laboratory

Max / Only

Parameters

Units

Frequency

Samples

Date

Results

Min

Mean

EPL (Bore)

Value

Received

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

16/09/2021

7.4

Conductivity

µs/cm

Quarterly

1

16/09/2021

1890

(RB05A)

TDS

mg/L

16/09/2021

1140

Table 4 - 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

08/09/2021

22:30

0.2

IA

35

IA

45

0

Nil

NM2

08/09/2021

23:30

0.7

IA

39

IA

45

0

Nil

NM3

08/09/2021

23:39

0.4

IA

35

IA

45

0

Nil

NM4

08/09/2021

23:00

0.2

IA

35

IA

45

0

Nil

NM5

08/09/2021

22:00

0.5

IA

35

IA

45

0

Nil

NM6

08/09/2021

23:57

0.5

IA

35

IA

45

0

Nil

MCC ID = Locations as per the EPL No.20221.

ND = No data due to high prevailing winds during the attended noise monitoring event.

Italicised text indicates wind speed exceeds the 3.0m/s maximum for noise monitoring.

NM = Not Measurable. If site noise is noted as NM, <20 dB or <30 dB, this means some noise was audible but could not be quantified.

IA = Site noise was inaudible at the monitoring location.

N/A in exceedance column means criterion was not applicable due to atmospheric conditions outside those specified in the project approval.

Table 5 - 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.

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	11	95.53	107.4	120	No
	Blasts	Vibration	mm/s	11	0.15	0.77	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).

Table 7 - Dust Monitoring (Limits Apply)

ID	Sample			Rolling	NEPM	Exceedance
Unit	Parameter	Annual	Annual
EPL (Site)	period	(Yes / No)
		Average	Criteria
18	Continuous	µg/m3 month	PM10	7.7	30	No
(TEOM1)
19	6 days	µg/m3	PM10	11.9	30	No
(HVAS)
			Rolling
ID	Sample	Particulates	Annual		Exceedance
Deposited	Average	Criteria
EPL (Site)	period	(Yes / No)
Matter	Insoluble
			Solids
20	Monthly	g/m2 month	2.1	4	No
(DDG1/MC1)
21	Monthly	g/m2 month	2.1	4	No
(DDG2/MC2)
22	Monthly	g/m2 month	1.8	4	No
(DDG3/MC3)
23	Monthly	g/m2 month	1.2	4	No
(DDG4/MC4)