Whitehaven Coal : TAR - EPL Monitoring 08 August 2021

TARRAWONGA COAL MINE - MONTHLY MONITORING SUMMARY

Site Information

EPL No: 12365

EPA Website Link: http://www.epa.nsw.gov.au/prpoeoapp/ViewPOEOLicence.aspx?DOCID=55113&SYSUID=1&LICID=12365

Licensee: Tarrawonga Coal Pty Ltd

Licensee Address: Tarrawonga Coal Mine, 469 Goonbri Road, BOGGABRI NSW 2382

EPL Monitoring Points: See Figure 1 below

Sampling Period: August 2021

Obtained Date: 6/08/2021

Publication Date: 6/08/2021

Table 1 - No Pollutant Limits Apply

	EPL						Units of			Monitoring			No. of			Date			Date of Max.			Min			Mean			Median			Max or		Comments
			Pollutant							Samples for					Value									Only
	ID					Measure			Frequency					Sampled					Value			Value			Value
										the Month					Obtained									Value
				TSS		mg/L		Upon	0		-		-		-		-		-		-		-
										discharge
				Conductivity		µS/cm				0		-		-		-		-		-		-		-
5
		Oil & Grease		mg/L				0		-		-		-		-		-		-		-
				pH		pH				0		-		-		-		-		-		-		-
				TSS		mg/L		Upon	0		-		-		-		-		-		-		-
										discharge
				Conductivity		µS/cm				0		-		-		-		-		-		-		-
6
		Oil & Grease		mg/L				0		-		-		-		-		-		-		-
				pH		pH				0		-		-		-		-		-		-		-

1

Table 2 - Pollutant Limits Apply

													No. of						Date of												Exceed
	EPL						Units of			Monitoring					Date			Max.			Min			Max or			100%ile			-ance
			Pollutant							Samples for															Comment/s
	ID					Measure			Frequency					Sampled			Value			Value			Only Value			Limit			(Yes/
										the Month
																		Obtained												No)
				TSS		mg/L		Upon	0		-		-		-		-		-		-		-
										discharge
			Conductivity		µS/cm				0		-		-		-		-		-		-		-
1
	Oil & Grease		mg/L				0		-		-		-		-		-		-		-
				pH		pH				0		-		-		-		-		-		-		-
				TSS		mg/L		Upon	6		4-8-21 &		6-8-21		25		48		50			No		Controlled
										discharge				19-8-21																		release.
																																		Duplicate
			Conductivity		µS/cm				6		4-8-21 &		20-8-21		303		345			NA		No		samples
															19-8-21																		taken for
2																																	two events
	Oil & Grease		mg/L				6		4-8-21 &		-		<5		<5		10			No
															over
															19-8-21
																																multiple
																																		days.
				pH		pH				6		4-8-21 &		4-8-21		7.18		8.06		6.5-8.5			No
															19-8-21
				TSS		mg/L		Upon	0		-		-		-		-		-		-		-
										discharge
			Conductivity		µS/cm				0		-		-		-		-		-		-		-
3
	Oil & Grease		mg/L				0		-		-		-		-		-		-		-
				pH		pH				0		-		-		-		-		-		-		-
24			TSS		mg/L				0		-		-		-		-		-		-		-
																																	2

													No. of						Date of												Exceed
	EPL						Units of			Monitoring					Date			Max.			Min			Max or			100%ile			-ance
			Pollutant							Samples for															Comment/s
	ID					Measure			Frequency					Sampled			Value			Value			Only Value			Limit			(Yes/
										the Month
																		Obtained												No)
			Conductivity		µS/cm		Upon	0		-		-		-		-		-		-		-
										discharge
			Oil & Grease		mg/L				0		-		-		-		-		-		-		-
				pH		pH				0		-		-		-		-		-		-		-
				TSS		mg/L		Upon	4		4-8-21 &		19-08-21		<5		<5		50			No		Controlled
										discharge				19-8-21																		release.
																																		Duplicate
			Conductivity		µS/cm				4		4-8-21 &		19-08-21		302		302			NA		No
															samples
															19-8-21
																																taken for
26
																																two events.
	Oil & Grease		mg/L				4		4-8-21 &		19-08-21		<5		<5		10			No
															19-8-21
				pH		pH				4		4-8-21 &		19-08-21		7.36		7.59		6.5-8.5			No
															19-8-21
				TSS		mg/L		Upon	0		-		-		-		-		-		-		-
										discharge
			Conductivity		µS/cm				0		-		-		-		-		-		-		-
27
	Oil & Grease		mg/L				0		-		-		-		-		-		-		-
				pH		pH				0		-		-		-		-		-		-		-

3

Table 3 - Monitoring (Quarterly & 6 Monthly - No Limits apply)

	EPL						Units of			Monitoring			No. of Samples			Date			Date of			Min			Mean			Median			Max or
			Pollutant											Max. Value									Only
	ID					Measure			Frequency			for the Period			Sampled					Value			Value			Value
														Obtained									Value
				Conductivity		µS/cm				0		-		-		-		-		-		-
				Lead		mg/L				0		-		-		-		-		-		-
						6 monthly -
9
		pH		pH		(Mar- Sep)	0		-		-		-		-		-		-
				Standing Water		metres				0		-		-		-		-		-		-
				Level
				Conductivity		µS/cm				0		-		-		-		-		-		-
				Lead		mg/L				0		-		-		-		-		-		-
						6 monthly -
10
		pH		pH		(Mar- Sep)	0		-		-		-		-		-		-
				Standing Water		metres				0		-		-		-		-		-		-
				Level
				Conductivity		µS/cm				0		-		-		-		-		-		-
				Lead		mg/L				0		-		-		-		-		-		-
						6 monthly -
12
		pH		pH		(Mar- Sep)	0		-		-		-		-		-		-
				Standing Water		metres				0		-		-		-		-		-		-
				Level
				Conductivity		µS/cm				1		16-8-2021		16-8-2021											1,240
				Oil & Grease		mg/L		Quarterly -	1		16-8-2021		16-8-2021											<5
13									(Feb, May, Aug,
		pH		pH		1		16-8-2021		16-8-2021											8.84
						Nov)
				TSS		mg/L				1		16-8-2021		16-8-2021											11

4

Table 4 - Quarterly Attended Noise Monitoring

(Noise Limits Apply -35dB LAeq(15min) -Day, Evening and Night;45dB LA1(1min) -Night )

Next quarterly attended noise monitoring conducted in September.

5