previous summer surveys 58
4.9.3 Cyanobacteria 59
4.10 Lake Opunake 60
4.10.1 Comparison with guidelines 61
4.10.2 Comparison with previous summer surveys 62
4.10.3 Long-term trend analysis 62
4.10.4 Cyanobacteria 63
4.11 Timaru Stream at Weld Road (near mouth) 64
4.11.1 Comparison with guidelines 67
4.11.2 Comparison with previous summer surveys 69
4.11.3 Long-term trend analysis 69
page
iii
4.11.4 Cyanobacteria 70
4.12 Waimoku
Contact Energy Stratford Power Station Annual Report 2022-2023
drainage 37
2.3.2 Results of wet weather stormwater and receiving environment monitoring 44
page
ii
2.3.3 Results of dry weather stormwater and receiving environment monitoring 46
2.3.3.1 Manganaha Stream 47
2.3.3.2 Dry weather Puremu Stream and discharge sampling – compliance
monitoring 48
2.3.3.3 Dry weather baseline characterisation of contaminants 56
2.3.4 Biological monitoring 58
2.3.4.1 Macroinvertebrate surveys 58
2.4 Groundwater 61
2.5 Air 67
19 14 16 15 16
Copper mg/kg 100 18 27 12 17 19 19
Lead mg/kg 300 1.50 2.2 1.2 2.4 3.5 3.50
Mercury mg/kg 1 <0.1 <0.1 0.1 <0.1 <0.1 <0.1
Nickel mg/kg 60 8 10 7 8 7 8
Zinc mg/kg 300 73 94 68 80 72 67
Barium* mg/kg 10000 590 5400 284 588 2200 1090
Chloride mg/kg 700 8 19 9 32 38 110
Conductivity mSm-1 290 <10 <10 <10 <10 <10 <10
Sodium mg/kg 460 89 440 420 84 380 410
Soluble salts mg/kg 2500 <500 <500 <500 <500 <500 <500
Sodium absorption ratio - 18
Long-Term Plan 2018-2028 (Final draft pending approval)
Supporting documentation for Long-Term Plan 2018-2028
in terms of historical median
MCI score 144
Table 67 Summary of Mann-Kendall test results for MCI scores trended over time (1995-2019) for 59
Taranaki streams/rivers (p with FDR applied) (significant = p < 0.05 and highly significant = p
< 0.01) 146
List of figures
Figure 1 Location of macroinvertebrate fauna sampling sites for the 2018-2019 SEM programme 6
Figure 2 Numbers of taxa and MCI values in the Hangatahua (Stony) River at Mangatete Road 13
Figure 3 LOWESS trend
Policy & Planning Committee agenda November 2021
12.3.5
12.4 Recommendation 66
13. Taranaki Trucking Company Limited - Cardiff Road, Stratford 67
13.1 Site description and activities 67
13.2 Results 67
Inspections 67 13.2.1
Results of receiving environment monitoring 68 13.2.2
Investigations, interventions, and incidents 68 13.2.3
13.3 Discussion 69
Discussion of site performance 69 13.3.1
Environmental effects of exercise of consents 69 13.3.2
Evaluation of performance 69 13.3.3
Recommendation from the 2014-2015 Annual
river silt and sand 64
Table 36 Summary of performance for Consent 5337 - to dam an
unnamed tributary of the Tawhiti Stream 64
Table 37 Summary of performance for Consent 5845 - removal,
reconstruction and maintenance of a dam (with fish pass) 65
Table 38 Summary of performance for Consent 6257 – emissions to
air from fuel centre 66
Table 39 Summary of performance for Consent 6273 – emissions to
air from Cogen I and II 67
Table 40 Summary of performance for Consent 7465 –