1995 to 2015 67
Introduction 67 4.3.1
Trend analysis methods 67 4.3.2
Results of trend analysis 68 4.3.3
4.4 Trends in physicochemical water quality data from 2008 to 2015 77
Introduction 77 4.4.1
Trend analysis methods 77 4.4.2
Results of trend analysis 78 4.4.3
Patea River catchment 80 4.4.3.1
Punehu Stream catchment 80 4.4.3.2
Stony River catchment 81 4.4.3.3
Maketawa River catchment 81 4.4.3.4
Waiwhakaiho River 81 4.4.3.5
Mangaoraka Stream (Waiongana Stream catchment) 82
an unnamed tributary of the Tawhiti Stream
Parameter Alkalinity BODCF BOD COD Condy O&G pH SS Turb. Temp.
Total
Cl2
Free
Cl2
Unit
g/m³
CaCO3
g/m³ g/m³ g/m³
µS/cm @
25ºC g/m³ pH g/m³ FNU °C g/m³ g/m³
Summary statistics previous data (November 1998 to June 2023)
Minimum 23 <1.0 <0.5 <3 135 <0.5 6.8 <3 1.0 8.0 <0.07 <0.07
Maximum 157 19 21 210 450 25 9.9 660 350 22.5 0.3 0.3
Median 67 <0.1 1.1 10 298 <0.5 7.5 7 4.5 15.8 <0.1 <0.1
Number 188 133 194 192
Updates from Territorial Authorities 48
7. Public Transport Operational Update 64
8. Transport Policy Updates 67
9. Request to vary the Regional Land Transport Plan 2021/22-2026/27 73
10. General Business
Taranaki Regional Transport Committee Meeting - Agenda
2
page
Date 1 December 2021
Subject: Confirmation of Minutes - 1 September 2021
Approved by: M J Nield, Director - Corporate Services
S J Ruru, Chief Executive
Document: 2924316
Regional Transport Committee Agenda June 2024
Executive Audit and Risk Agenda March 2024 v2
Executive Audit and Risk Agenda March 2024
of the site, 5 May 2021
Parameters Units Discharge Downstream receiving
water
Biochemical oxygen demand* g/m3 < 1.0 <1.0
pH pH 7.1 7.1
Suspended solids g/m3 115 67
Temperature °C 14.5 14.0
page
8
Figure 2 Surface water sampling sites
The suspended solids content of the discharge and receiving water were elevated at the time of sampling,
however it was noted that due to the shallowness of the water some sediment was disturbed during
Executive Audit and Risk Agenda May 2023