For those of you who are planning to submit on the Renewal of consent for the operation of the Taipa Wastewater Plant (due tomorrow, 5 August) here are some additional notes that Andreas Kurmann of Far North EnviroLab has kindly put together. The figures for discharge standards would give some set goals for a hapu/community/council management team to work towards.
For details of the Application, go to the NRC site:
http://www.nrc.govt.nz/Consents/Notified-consents/Far-North-District-Council---Ryder-Road-Taipa/
You can access an electronic submission form at the bottom of that page.
If the following details do not come up properly from this message please email Soozee at info@ecocentre.co.nz and the word document can be sent to you directly.
Points which could be included in some of the submission towards the new resource consent for the Taipa waste water plant.
To grant consent the following conditions would need to would need to be applied;
For discharging waste water into the unnamed tributary of the Parapara Stream, contaminant levels shall fall below the following standards ;
The amount of Ammonia-N shall not exceed the following ;
Water Quality Criteria for Freshwater Aquatic Life based on Total Ammonia (milligrams per liter) (Four day average)
|
Total Ammonia, NH4-N g/m³ |
|||||
|
pH |
10°C |
15°C |
20°C |
25°C |
30°C |
|
6.50 |
1.81 |
1.81 |
1.22 |
0.86 |
0.60 |
|
6.75 |
1.81 |
1.81 |
1.22 |
0.86 |
0.60 |
|
7.00 |
1.81 |
1.81 |
1.22 |
0.86 |
0.61 |
|
7.25 |
1.81 |
1.81 |
1.23 |
0.86 |
0.61 |
|
7.50 |
1.81 |
1.81 |
1.23 |
0.86 |
0.61 |
|
7.75 |
1.73 |
1.64 |
1.15 |
0.81 |
0.58 |
|
8.00 |
1.13 |
1.09 |
0.76 |
0.54 |
0.39 |
|
8.25 |
0.64 |
0.62 |
0.44 |
0.32 |
0.23 |
|
8.50 |
0.37 |
0.36 |
0.26 |
0.19 |
0.14 |
The amount of discharged Nitrate shall not exceed 2 mg NO3-N
The median concentration of the feacal coliform bacteria in the water shall not exceed 100 per 100 milliliters, and the 80 percentile concentration shall not exceed 500 per 100 milliliters, based on not fewer than 5 samples taken over any 30 day period.
The amount of BOD5 shall not exceed 20 mg/l
The amount of Phosphorus shall not exceed 0.05mg P/l
The dissolved oxygen concentration shall not be reduced below 80% of saturation.
The consent holder shall include Far North Envirolab Ltd as an independent Laboratory for monitoring the discharge of the Waste water and the conditions in the above mentioned creek on a weekly base.
Taipa Waste Water treatment Plant
The dissolved oxygen concentration in all the primary and secondary treatment ponds shall not fall below 3.0 gram per cubic meter.
The dissolved oxygen concentration at the discharge point of the wetland shall not fall below 6.0 gram per cubic meter.
The consent holder shall in partnership with Far North Envirolab, local Hapu and Transfield optimize the present operation and management of the existing waste water plant.
The consent holder shall within the next 9 month in partnership with local Hapu, community groups and Far North Envirolab investigate alternative solutions for the additional treatment of the above plant. This would need to include a working group and prototype plants to gain the necessary data’s for a future upgrade.
Cheers Andreas
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