than 2 out of 12 consecutive samples. Compliance ADVICE NOTE: with condition 4 will be based on the flow at the at “Mangatainoka Pahiatua Town Bridge” flow recording station is less than 23,337 l/s. Compliance shall be based on grab samples taken immediately downstream of the UV treatment plant. Date may be able to be By 1 July 2018, all wastewater discharge into the Mangatainoka River shall pass By 1 July 2019, all bought back but through the primary screening unit, the oxidation ponds, the UV disinfection unit, the wastewater depends on when wetland complex and discharge via the unlined wetland section. discharge into the wetland can be Mangatainoka constructed and River shall pass planted. through the primary screening unit, the oxidation ponds, the UV disinfection unit, the wetland complex and discharge via the unlined wetland section. The UV disinfection unit shall be equipped with a UV sensor to monitor UV transmission The UV or intensity through the wastewater during operation. disinfection unit shall be equipped with a UV sensor to monitor the applied UV dose. Alternative condition The UV sensor shall be monitored continuously, and at a minimum operating intensity The UV sensor on advise of Mr of 30 mJ/cm2 with an alarm notifying the consent holder if the applied UV intensity is shall be monitored Crawford continuously, and operating ineffectively. shall be programmed with an alarm notifying the consent holder if the applied UV dose decreases below the
than 2 out of 12 consecutive samples. ADVICE NOTE: Compliance with condition 4 will be based on the flow at the “Mangatainoka at Pahiatua Town Bridge” flow recording station is less than 23,337 l/s. Compliance shall be based on grab samples taken immediately downstream of the UV treatment plant. By 1 July 2018, all wastewater discharge into the Mangatainoka River shall pass through the primary screening unit, the oxidation ponds, the UV disinfection unit, the wetland complex and discharge via the unlined wetland section. By 1 July 2019, all wastewater discharge into the Mangatainoka River shall pass through the primary screening unit, the oxidation ponds, the UV disinfection unit, the wetland complex and discharge via the unlined wetland section. Date may be able to be bought back but depends on when wetland can be constructed and planted. The UV disinfection unit shall be equipped with a UV sensor to monitor UV transmission or intensity through the wastewater during operation. The UV disinfection unit shall be equipped with a UV sensor to monitor the applied UV dose. The UV sensor shall be monitored continuously, and at a minimum operating intensity of 30 mJ/cm2 with an alarm notifying the consent holder if the applied UV intensity is operating ineffectively. The UV sensor shall be monitored continuously, and shall be programmed with an alarm notifying the consent holder if the applied UV dose decreases below the Alternative condition on advise of Mr Crawford
16.%20TDC%20S41B%20Report%20Tabitha%20Manderson%20Appendix%20I%20-%20Word%20Version.docx