Effluent monitoring 63
3.3.1.4 Inter-laboratory comparisons 67
3.3.1.5 Methanex Waitara Valley annual report 70
3.3.1.6 Uncontaminated stormwater 70
3.3.2 Air 71
3.3.2.1 Inspections 71
3.3.2.2 Consent requirements 71
3.4 Investigations, interventions, and incidents 71
3.5 Discussion 72
3.5.1 Discussion of plant performance 72
3.5.1.1 Environmental effects of exercise of water permits 72
3.5.1.2 Environmental effects of exercise of air discharge
permit 72
2.4 Groundwater 57
2.5 Air 64
2.5.1 Data review – landfill gas flare 64
2.5.2 Results of receiving environment monitoring 71
2.5.2.1 Deposition gauging 71
2.5.2.2 Ambient suspended particulate and landfill gas component
monitoring 72
2.6 Incidents, investigations, and interventions 72
3 Discussion 81
3.1 Discussion of site performance 81
3.2 Environmental effects of exercise of consents 81
3.3 Evaluation of performance 83
3.4 Recommendations from the 2021-2022 Annual
Consents & Regulatory Committee agenda February 2022
Consents & Regulatory Committee agenda October 2021
analysis 59
2.8 Kapoaiaia Stream 61
2.8.1 Flow data and survey dates 63
2.8.2 Periphyton cover 63
2.8.3 Periphyton Index Score 65
2.8.4 Summary of 2002-2012 (10 year data set) 66
2.8.5 Long term trend analysis 67
2.9 Waiongana River 71
2.9.1 Flow data and survey dates 72
2.9.2 Periphyton cover 72
2.9.3 Periphyton Index Score 74
2.9.4 Summary of 2002-2012 (10 year data set) 74
2.9.5 Long term trend analysis 76
2.10 Mangaehu River 79
2.10.1 Flow data and survey dates 80
2.10.2
monitoring inspection and to take
water samples. The weather was fine with 13 mm rain falling over previous 72 hours
and the stream system was in low flow. A truck was discharging drilling muds and a
digger was operating blending in sawdust at time of inspection. A discussion was
held with the digger driver and site manager on the drainage issues at the top of the
lower irrigation area and the installation of novaflo in a few swampy areas on the
main irrigation flats. Discussion included the
monitoring
undertaken and assesses the environmental effects of the Company’s activities.
During the monitoring period, Todd Petroleum Mining Company Ltd demonstrated a high level of
environmental performance and high level of administrative performance.
During the year the Company held seven resource consents, which included a total of 72 conditions setting
out the requirements that they must satisfy. The Company held one consent to allow it to take water, two
consents to discharge effluent
1 MWH000380
5 MWH000490
15
25
18
27
10-25 [16]
13-25 [19]
12-24 [16]
16-30 [24]
83
90
72
83
58-85 [73]
63-86 [77]
72-85 [76]
84-102 [90]
41
36
12
12
Waingongoro River
6 WGG000620
7 WGG000640
8 WGG000665
-
-
19
20
28
21
16-35 [27]
17-35 [26]
14-30 [21]
19-28 [24]
21-31 [27]
14-27
69
Appendix I High tide times 72
Appendix II MAC assessments 76
page
iii
List of tables
Table 1 Surveillance, Alert and Action levels for marine waters (2003) 2
Table 2 Microbiological Assessment Categories 3
Table 3 Suitability for recreation grade (SFRG) for coastal recreational areas
in the Taranaki region, November 2006 to April 2011 4
Table 4 Location of bathing water bacteriological sampling sites 2011-2012 6
Table 5 Coastal bathing
consent 1857-6.
Table 2 Results of combined discharge (STW001027) and receiving water (MGO000031) monitoring
for the 2013-2014 year
Date
Sampling
point
Temp
(oC)
pH
Conductivity
(mS/m)
Suspended
Solids
(g/m3)
Dissolved
Copper*
(g/m3)
Dissolved
Zinc*
(g/m3)
30.6.14
STW001027 13.6 7.1 6.9 72 0.023 0.393
MGO000031* 13.3 7.1 13.9 18 0.004 0.020
*USEPA acute criteria for dissolved metals: Cu 0.0088 g/m3 and Zn 0.064 g/m3 [at hardness of 50 g/m3