1 The Total Suspended Solids concentration limits specified for Points 9 and 10 may be exceeded for water discharged provided that:
the discharge occurs solely as a result of rainfall measured at the premises that exceeds 38.4 millimetres over any consecutive 5-day period immediately prior to the discharge occurring; and
Units of
Monitoring
No. of
Date
Date
Min
Max
100%ile
Exceedance
EPL ID
Pollutant
Samples for
Comments
Measure
Frequency
Sampled
Obtained
Value
Value
Limit
(Yes/No)
the Month
TSS
mg/L
0
-
-
50
-
No discharge
Conductivity
µS /cm
Special
0
0
-
-
-
-
-
No discharge
9
Oil & Grease
mg/L
Frequency
0
-
-
10
-
No discharge
pH
pH
1*(SD3)
0
-
-
6.5-8.5
-
No discharge
Total organic carbon
mg/L
0
-
-
-
-
No discharge
TSS
mg/L
0
-
-
50
-
No discharge
Conductivity
µS /cm
Special
0
-
-
-
-
No discharge
10
Oil & Grease
mg/L
Frequency
0
0
-
-
-
10
-
No discharge
1*(SD4)
pH
pH
0
-
-
6.5-8.5
-
No discharge
Total organic carbon
mg/L
0
-
-
-
-
No discharge
2
SUNNYSIDE COAL MINE - MONTHLY MONITORING SUMMARY
all practical measures have been implemented to dewater all sediment dams within 5 days of rainfall such that they have sufficient capacity to store run off from a 38.4 millimetre, 5 day rainfall event.
Special Frequency 1 means the collection of samples as soon as practicable after each discharge commences and, in any case, not more than 12 hours after each discharge commences.
Special Frequency 2 means collection of samples quarterly (in the event of flow during the quarter) at a time when there is flow and as soon as practicable after each wet weather discharge from points 9 and 10 commences and in any case not more than 12 hours after each discharge commences.
3
Figure 1 - EPL 12957 Monitoring Locations
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Whitehaven Coal Limited published this content on 20 January 2023 and is solely responsible for the information contained therein. Distributed by Public, unedited and unaltered, on 24 January 2023 08:56:06 UTC.
Whitehaven Coal Limited is an Australia-based company engaged in the production of coal. The Company is focused on the development and operation of coal mines in New South Wales and Queensland. Its segments include open-cut operations, underground operations, and coal trading and blending. Its assets include Canyon Mine, Gunnedah CHPP, Maules Creek Mine, Narrabri Mine, Narrabri Stage-3 Extension Project, Rocglen Mine, Sunnyside Mine, Tarrawonga Mine, Vickery Extension Project, Werris Creek Mine, Daunia Mine, Blackwater Mine and Winchester South Project. Its operating assets are complemented by two development assets: Vickery, near Gunnedah, and Winchester South, in Queenslandâs Bowen Basin. It produces coal using open-cut mining methods at Maules Creek, Tarrawonga, and Werris Creek and underground mining methods at Narrabri. Vickery Extension Project (Vickery) is a proposal to construct an open-cut coal mine and associated on-site infrastructure about 25 kilometers north of Gunnedah.
WHITEHAVEN COAL LIMITED 
