dates 64
2.7.2 Periphyton cover 65
2.7.3 Periphyton Index Score 66
2.7.4 Periphyton biomass 67
2.7.5 Summary of 2002-2014 (12 year data set) 68
2.7.6 Long term trend analysis 69
2.8 Kapoaiaia Stream 71
2.8.1 Flow data and survey dates 72
2.8.2 Periphyton cover 72
2.8.3 Periphyton Index Score 74
2.8.4 Periphyton biomass 75
2.8.5 Summary of 2002-2014 (12 year data set) 76
2.8.6 Long term trend analysis 77
2.9 Waiongana River 81
2.9.1 Flow data and survey dates 82
2.9.2 Periphyton
Patea at Bore 3 21 147.2 131 1061.6 144 93 2005
Waitotara at Hawken Rd 16 98.6 110 989.4 147 96 2016
Ahuahu at Te Tuhi
Junction 19 98.5 67 1165.5 138 86 2018
Whanganui at Mataimona
Trig 21 167.5 91 1335.5 131 80 2018
Whangamomona at
Marco Road 20 308.8 152 1491.9 121 80 2018
Whangamomona at
Bridge to Somewhere 18 244.9 144 1293.5 121 78 2018
Whanganui at Pipiriki 17 141.0 98 983.0 120 76 2018
Ohura at Waitewhena
Airstrip 16 224.4 110 1492.5 128 80 2019
Ohura at
Lot 1 DP 392547 Jomarc Limited Private
9 Section 6 Block VII Huiroa SD A R Hann Trustee Limited, John David Hann, Leonard
Gordon Hann
Private
10 Lot 3 DP 453998;
Lot 2 DP 453998;
Section 21 Block VII Huiroa SD
Andrea Elizabeth Bunn, GQ Trustees 2012 Limited, Lyall
Antony Bunn
Private
11 Part Lot 1 DP 5318;
Part Section 3S Ratapiko SETT;
Section 67 Block VI Huiroa SD;
Section 66 Block VI Huiroa SD;
Lot 2 DP 457321;
Lot 1 DP 16170
Ross Norman
110 100 Dec 2003
Kapoaiaia Cape Egmont 11 87.8 94 1391.2 109 101 Jan 1930
Taungatara Te Kiri 7 95.5 87 1483.0 105 97 Dec 2004
Kaupokonui Manaia 7 40.0 48 990.0 93 86 Sep 1997
Duffy's Farm Whareroa 9 60.5 67 971.0 98 89 Feb 1993
Bore 3 Patea 10 91.8 134 1148.8 110 100 Feb 1994
Omaru Charlie's Clearing 14 112.0 97 1631.0 101 93 Apr 2005
Omahine Moana Trig 10 90.5 75 1363.5 84 78 Mar 2006
Rimunui Waitotara Valley 9 66.5 59 1098.0 88 81 May 1993
Ngutuwera Waitotara
1771.0 107 91 Dec 2003
Kapoaiaia Cape Egmont 14 115.2 94 1303.4 110 94 Jan 1930
Taungatara Te Kiri 19 126.5 88 1387.5 107 90 Dec 2004
Kaupokonui Manaia 11 76.5 67 950.0 97 82 Sep 1997
Duffy's Farm Whareroa 12 63.0 62 910.5 101 84 Feb 1993
Bore 3 Patea 14 86.2 77 1057.0 109 92 Feb 1994
Omaru Charlie's Clearing 21 187.5 109 1519.0 101 87 Apr 2005
Omahine Moana Trig 20 143.5 80 1273.0 85 73 Mar 2006
Rimunui Waitotara Valley 16 140.0 107 1031.5 91 76 May 1993
Ngutuwera
defined by LINZ coastline layer,
altered to include agreed CMA river
mouth boundaries
Roads
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
KEY
1
2
3
4
5
67
8
11
12
13
14
16
15
17
18
19
20
21
22
23
9
10
Feedback and more information
Creating a Nationally Significant Surfing Area would be just a small
part of a much larger project to protect
trend direction
(ranging from 50% to 100%) is categorised based on the categories in Table 4.
page
7
Table 4 Confidence categorisation for trend direction results
Confidence Category Confidence in reported trend
direction
Very Likely Improving 90 – 100%
Likely Improving 67 – 90%
Indeterminate 50 – 67%
Likely Degrading 67 – 90%
Very Likely Degrading 90 – 100%
The trend methods implemented are limited to identifying a single direction (monotonic) …
11 New Zealand Railways Corporation/KiwiRail Holdings Ltd (KiwiRail) 64
11.1 Process description 64
11.2 Water discharge permits 65
11.3 Results 65
11.3.1 Inspections 65
page
v
11.3.2 Chemical analysis 65
11.3.2.1 Results of discharge monitoring 65
11.3.2.2 Results of receiving environment monitoring 66
11.4 Investigations, interventions, and incidents 67
11.5 Discussion 67
11.5.1 Discussion of site performance 67
11.5.2 Environmental effects of …
comparison 67
Figure 43 Downstream ammoniacal nitrogen concentration changes in the Kaupokonui Stream from the
monthly stream surveys, with previous years for comparison 67
Figure 44 Downstream conductivity changes in the Kaupokonui Stream from the monthly stream
surveys, with previous years for comparison 68
Figure 45 Downstream nitrate-nitrite nitrogen concentration changes in the Kaupokonui Stream from
the monthly stream surveys, with previous years for comparison 68
Figure 46
Waiwhakaiho Egmont Village 18 20.0 98 1899.0 109 80 Aug 1990
Manganui Everett Park 18 173.5 95 1561.5 103 76 Jan 1987
Oxi' Ponds Inglewood 20 190.0 85 1640.0 96 70 May 1999
TRC Stratford 17 187.0 99 1646.0 111 84 Jul 1998
Mangaehu Toko (Huinga) 17 137.5 95 1208.5 103 78 Jul 1998
Kotare Tongaporutu 17 175.0 81 1418.0 92 66 Jan 1998
Kaka Rd Okoki 16 190.5 94 1480.0 93 67 Aug 1990
Pohokura Saddle Pohokura 20 202.5 107 1409.5 98 71 Aug 1990
Stony Mangatete Rd 22 160.0 93 1575.5