DRAFT Plan Change 14 (OSET) to the Bay of Plenty Regional Natural Resources Plan

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1 Version 2.0 July 2018 DRAFT Plan Change 14 (OSET) to the Bay of Plenty Regional Natural Resources Plan Bay of Plenty Regional Council PO Box 364 Whakatāne 3158 New Zealand BAY OF PLENTY REGIONAL COUNCIL TOI MOANA 1

2 On-Site Effluent Treatment Draft 24 July 2018 Draft Plan Change 14 (OSET) Notes for reader (not part of plan change): Plan Change 14 (OSET) to the Regional Natural Resources Plan will replace the On-Site Effluent Treatment Regional Plan. The On-site Effluent Treatment Regional Plan will be withdrawn once Plan Change 14 (OSET) becomes operative. Definitions to be included in the Regional Natural Resources Plan as part of Plan Change 14 do not include RMA definitions, and other definitions already in the Regional Natural Resources Plan. BAY OF PLENTY REGIONAL COUNCIL TOI MOANA 2

3 On-Site Effluent Treatment Draft 24 July 2018 Contents OSET On-Site Effluent Treatment... 4 Objectives... 4 Policies... 4 Rules BAY OF PLENTY REGIONAL COUNCIL TOI MOANA 3

4 On-Site Effluent Treatment Draft 24 July 2018 OSET On-Site Effluent Treatment The purpose of this section is to manage the effects of discharges from on-site effluent treatment systems on water and land resources, and reduce the risk to human health. The provisions manage the effects of individual systems, and the cumulative effects from un-sewered communities. On-site effluent treatment systems include: Septic tanks Aerated wastewater treatment systems (AWTS) Greywater Waterless composting toilets Alternative toilet systems, including incinerating toilets and dehydrating toilets Pit latrines Discharges from municipal wastewater schemes, and the discharge of septage are addressed under Rule DW R8 (discretionary) and the provisions in Section DW Discharges to Water and Land of this regional plan. Objectives Refer to: Objectives DW O5, DW O6 and DW O7 of this regional plan. Objectives 10, 15, 16, 17, 25, 28, and 29 of the Bay of Plenty Regional Policy Statement. Policies In addition to the Policies below, also refer to: Policies DW P6, DW P8, DW P12 and DW P13 of this regional plan. OSET P1 Risks of on-site effluent treatment systems Recognise that discharges from on-site effluent treatment systems can present a risk to the environment and human health: Not all sites are appropriate for on-site effluent treatment systems due to: (i) Insufficient land area, or insufficient area of suitable land within a property, to provide for the sustainable operation of an on-site effluent treatment system. (ii) High groundwater levels. (iii) Soil types that are unsuitable for on-site effluent treatment systems (particularly Category 5 and 6 soils as defined by NZS 1547:2012). On-site effluent treatment and disposal systems have a limited serviceable life. Ongoing maintenance is needed to extend the life of the system, and replacement or upgrading will be required over time. OSET P2 Communities to be reticulated Communities where on-site effluent treatment systems present a high risk to the environment, and where sewage reticulation is the preferred option, are: Lake Tarawera settlement area, BAY OF PLENTY REGIONAL COUNCIL TOI MOANA 4

5 On-Site Effluent Treatment Draft 24 July 2018 (c) (d) (e) Matatā, Mamaku, Tara Road, Pāpāmoa, Other communities where any of the following high risk criteria are evident: (i) Any of the matters in OSET P1. (ii) Discharges from on-site effluent treatment systems are adversely affecting water quality as measured by microbiological and nutrient levels. (iii) The community is prone to flooding. (iv) Discharges from on-site effluent treatment systems present a high risk to drinking water supply bores and springs. It should be recognised that groundwater levels and flood risk will change over time due to the implications of climate change. OSET P3 Require consents in high risk situations Manage risk via resource consent processes where discharges from on-site effluent treatment systems present a high risk to the environment and human health: (c) New on-site effluent treatment systems where the following risks exist at the site: (i) Lot size is less than 1200m 2. This does not apply where there are multiple dwellings (including Papakāinga housing developments) on a property and each on-site effluent treatment system has sufficient area for the occupancy design level of the associated dwelling or building. Refer to OSET P18 for Papakāinga housing developments. (ii) The highest groundwater table is less than 600mm below the land surface. (iii) The proximity to a drinking water supply bore or spring presents a risk to human health and groundwater quality. New and existing on-site effluent treatment systems where the wastewater does not comply with the definition of Domestic Wastewater in this regional plan. New, existing and replacement on-site effluent treatment systems that do not otherwise comply with the permitted activity conditions. OSET P4 Management of development in un-reticulated communities Development in un-reticulated communities is managed to ensure the use of on-site effluent treatment systems is sustainable, and presents a low risk to the environment and human health: Development does not occur on areas that can not support sustainable operation of on-site effluent treatment systems in relation to OSET P1 and OSET P2(d). Minimum lot sizes are larger than 1200m 2. (c) Development is planned so on-site effluent treatment systems comply with OSET P5 and OSET P6. OSET P5 Discharges from on-site systems Discharges from all on-site effluent management systems (including septic tanks, AWTS, composting toilets, greywater, alternative toilet systems, and pit latrines) avoid or mitigate adverse effects on the environment and human health: The type of system selected for use at the site: (i) Avoids or minimises and mitigates adverse effects on the environment. (ii) Protects people and communities from the health risks presented by faecal matter and toxins in wastewater. BAY OF PLENTY REGIONAL COUNCIL TOI MOANA 5

6 On-Site Effluent Treatment Draft 24 July 2018 The discharge from the system: (i) Avoids discharge to surface water bodies or groundwater. (ii) Avoids discharge close to the groundwater table, surface waterbodies or water supply bores. (iii) Avoids surface ponding and overland flow. (iv) Avoids odour nuisance. (v) Is at a rate and volume that can be absorbed and treated by soils at the discharge site, and therefore avoids or minimises build-up of nutrients, faecal coliforms, and household chemicals in soil and water resources. (vi) Avoids adverse effects on human health resulting from contact with discharges of faecal matter and toxins in wastewater. OSET P6 Design and maintenance of new and replacement on-site effluent treatment systems The design, installation and discharge quality from new and replacement individual onsite effluent treatment systems are managed to meet OSET P5, and the following requirements: Design of on-site effluent treatment system for the site (c) (d) The on-site effluent treatment system meets or exceeds the requirements of the relevant New Zealand standard(s). On-site effluent treatment systems are correctly sized for the intended or potential occupancy level of the associated dwelling or building. Dwelling occupancy is determined in accordance with Schedule OSET One. The design for the site is appropriate in relation to: (i) The implications of climate change, including rainfall patterns and intensity, sea-level rise, and increasing groundwater levels. (ii) Soil type. (iii) Proximity to surface waterbodies and coastal water. (iv) The distance to groundwater bores and springs that supply drinking water for human consumption. For septic tanks, an appropriately sized reserve area is set aside on the property to provide for unanticipated operational problems and/or system failure. The reserve area on a lot must not be used for permanent structures, including buildings and impervious surfaces. A reserve area may be reduced or eliminated if other suitable mitigation measures are used. Natural Hazards and Climate Change (e) (f) (g) In coastal areas, new or replacement on-site effluent treatment system infrastructure is appropriately located in relation to coastal erosion and storm surge, particularly in the Coastal Hazard Zone. All on-site effluent treatment system infrastructure is removed when the associated dwelling or building is removed or relocated. This requirement does not apply where a new building will be constructed that uses the on-site effluent treatment system. Include resource consent conditions to identify areas at high risk from natural hazards, or the implications climate change (including sea level rise), where (f) is particularly relevant. On-going Maintenance (h) (i) The system is regularly maintained to restore the performance of the on-site effluent treatment system, ensure compliance with OSET P5, and minimise system failure. Maintenance and servicing is reported to Bay of Plenty Regional Council to ensure compliance. BAY OF PLENTY REGIONAL COUNCIL TOI MOANA 6

7 On-Site Effluent Treatment Draft 24 July 2018 (j) Outlet solids filters are installed on all new conventional septic tank effluent treatment systems, and on existing septic tanks in Maintenance Zones. OSET P7 Term of Resource Consent Where a resource consent is needed for an on-site effluent treatment system, a resource consent term of up to 10 years will be applied. This is to recognise the life expectancy of an on-site effluent treatment system, and the need to re-evaluate its performance and effectiveness of the discharge field within a reasonable period to identify changes in performance over time. When a resource consent is renewed, the assessment will consider the operation and effectiveness of the on-site effluent treatment system and discharge field, and maintenance requirements. OSET 8 Decline resource consent applications for OSET systems Resource consent applications for an on-site effluent treatment system will be declined where the proposed discharge will create a public health hazard, or cause adverse environmental effects that cannot be safely and effectively avoided, remedied or mitigated. Resource consent applications for an on-site effluent treatment system may be declined where the proposed on-site effluent treatment system does not comply with the relevant New Zealand Standard(s). OSET P9 Aerated Wastewater Treatment Systems (AWTS) Only Aerated Wastewater Treatment Systems (AWTS) that have been tested and approved by: The On-site Effluent Treatment National Testing Programme (OSET NTP), or An accredited testing facility against the relevant New Zealand Standards, will be permitted activities. Other Aerated Wastewater Treatment Systems will require resource consent. OSET P10 Managing Discharges from Existing OSET systems Discharges from on-site effluent treatment systems that existed as at [date of plan change notification] are managed to meet the following requirements: On-site effluent treatment systems continue to operate efficiently, and avoid adverse on the environment and risk to human health. The system is regularly maintained to restore the performance of the on-site effluent treatment system, ensure compliance with OSET P5 and minimise system failure. OSET P11 OSET system upgrade or replacement Manage the upgrading, adding or replacement of on-site effluent treatment systems to meet permitted activity conditions, or require resource consent where necessary. OSET P12 Soak holes Soak holes are not an appropriate method to discharge wastewater. (c) From 1 December 1996, soak holes are not a permitted activity. New soak holes are prohibited activities, excluding replacement soak holes that comply with OSET P12(d). Where a soak hole existed before 1 December 1996, its use will only be a permitted activity where: BAY OF PLENTY REGIONAL COUNCIL TOI MOANA 7

8 On-Site Effluent Treatment Draft 24 July 2018 (d) (i) It is not within the catchments of the Rotorua Lakes or in a Maintenance Zone. (ii) There is sufficient distance between the base of the soak hole and groundwater to avoid adverse effects on water quality. (iii) The septic tank size is appropriate for the occupancy allowances in Schedule OSET One. (iv) There are less than minor adverse environmental effects. (v) The soak hole continues to operate without causing a public health hazard. (vi) It is not located in the Stability Area Minden A, B1, B2, C or U as identified in the Western Bay of Plenty District Plan. Where an existing soak hole fails, a replacement soak hole may be authorised by a resource consent provided that: (i) The site is greater than 60 metres from a reticulated sewerage system. (ii) The applicant can demonstrate there is insufficient area for a land application area at the site. (iii) The activity complies with OSET P12(c). OSET P13 Waterless Composting Toilets Discharges from waterless composting toilets are managed to meet the following requirements: (c) (d) The design, installation, operation, maintenance and discharge quality of the waterless composting toilet meets or exceeds the requirements of NZS :2008. The ability of the waterless composting toilet to meet NZS :2008 shall be independently verified. Where liquids are discharged to land from a waterless composting toilet, the liquids must be treated and discharged in accordance with NZS 1547:2012. An appropriately sized reserve area is set aside on the property to provide for the installation of an on-site effluent treatment system. The reserve area on a lot must not be used for permanent structures, including buildings and impervious surfaces. This is to provide the option for property owners to change systems where a waterless composting toilet is no longer preferred. Composting toilets are only used where the property is sufficient size to provide for the sustainable discharge of the composted material, and avoid adverse effects on the environment and human health. OSET P14 Alternative Toilet Systems Discharges from Alternative Toilet Systems will only be permitted where the Alternative Toilet Systems has been approved. Discharges from other alternative toilet systems will require resource consent. Approval will be provided by Bay of Plenty Regional Council staff, where: (c) Information on the output material has been provided by the Alternative Toilet Systems manufacturer or distributor for assessment; The material meets the requirements for Grade Aa biosolids in the Guidelines for the Safe Application of Biosolids to Land in New Zealand, 2003; and The manufacturer or distributer provides a manual that defines how the alternative toilet system is to be operated to achieve consistent quality material. BAY OF PLENTY REGIONAL COUNCIL TOI MOANA 8

9 On-Site Effluent Treatment Draft 24 July 2018 OSET P15 OSET in areas serviced by a reticulated sewage scheme In areas serviced by a reticulated sewage scheme: (c) Properties within areas serviced by reticulated sewage schemes connect to the schemes. For clarify, this is to be in accordance with the Building Code. Outside the catchments of the Rotorua Lakes, existing on-site effluent treatment systems may be granted renewal of resource consent where the system achieves environmental and public health outcomes. Where a new on-site effluent treatment system discharge is proposed in an area serviced by sewerage reticulation, the activity must also comply with the requirements of the Building Code. OSET P16 Addressing cumulative effects of un-reticulated communities Be proactive and collaborative in responding to situations where monitoring shows that discharges from on-site effluent treatment systems in un-reticulated communities are adversely affecting water quality in surface waterbodies, ground waterbodies, or the marine environment; or causing a risk to public health. OSET P17 Maintenance Zones Use Maintenance Zones as an option to optimise the performance of on-site effluent treatment systems in areas where those discharges are contributing to the degradation of surface or ground waterbodies, or the marine environment, or causing a risk to public health. OSET P18 Papakāinga Housing Developments Provide for discharges from on-site effluent treatment systems from Papakāinga housing developments and associated community facilities on multiple-owned Māori land. Discharges from on-site effluent treatment systems comply with the policies in this section that are applicable to the nature of on-site effluent treatment systems used at the development, and the location of the development. Provide sufficient area for the on-site effluent treatment systems related to the housing sizes in the development. The minimum areas are given in the table below: Number of bedrooms 1 or Minimum area (m 2 ) (c) Using decentralised systems may allow smaller areas that do not comply with the table above to be provided with a community wastewater system. Papakāinga development is planned in an integrated manner to achieve a high standard of wastewater management and protect human health. Means to achieve this include: (i) Te Keteparaha Mo Ngā Papakāinga Māori Housing Toolkit. (ii) An approved development plan in accordance with a district plan (including a district resource consent). BAY OF PLENTY REGIONAL COUNCIL TOI MOANA 9

10 On-Site Effluent Treatment Draft 24 July 2018 (d) (e) In the Rotorua District, Papakāinga development also complies with OSET P19. In relation to OSET P18(c), Bay of Plenty Regional Council will support resource consent applicants to ensure that the necessary technical requirements and supply of information are met in relation to on-site effluent treatment systems. OSET P19 Rotorua Lakes Discharges from on-site effluent treatment systems in the catchments of the Rotorua Lakes are managed to meet the following requirements: (c) (d) Lake catchment All lake catchments Additional policy for Lake Rotorua catchment Additional policy for Lake Tarawera catchment Additional policy for catchments of lakes Rotomā, Rotoiti and Rotoehu Requirement All existing and future development in the areas serviced by a reticulated sewage scheme connects to the scheme. For clarity, this is also in accordance with the requirements of the Building Code. Discharges from all on-site effluent treatment systems are managed to: Meet the environmental and human health requirements in OSET P5. Avoid or minimise adverse effects on lake water quality. Account for the characteristics of the individual lake catchment. Where an AWTS+NR is installed, the system meets a nitrogen discharge limit of 15 grams Nitrogen per m 3. Require existing soak holes to be replaced with appropriate land application systems. Recognise the connection with the nitrogen management provisions in the LR Lake Rotorua Nutrient Management section of this regional plan, and the need to ensure co-ordination with these requirements. The nitrogen component in a discharge from an existing or new on-site effluent treatment systems is managed within the Nutrient Management Plan for the property. Mamaku township is reticulated. Lake Tarawera settlement area and future development areas are reticulated. The following settlement areas in the catchments are reticulated: Lake Rotomā Along State Highway 30 from Matahī Road to Oxford Road. Lake Rotoiti Hauparu Bay, Te Ruato Bay, Gisborne Point, Rotoi and Hinehopu. Lake Rotoehu Loop Road, School and campground, Ngamimiro Bay, Ōtautū Bay. OSET P20 Co-ordination with other agencies Work with territorial authorities and Toi te Ora Public Health Service to co-ordinate effective and efficient processes for managing on-site effluent treatment systems under overlapping legislation: Resource Management Act 1991 (discharges and sub-division of land). Building Act (c) Local Government Act 2002 (funding for reticulation). (d) Health Act BAY OF PLENTY REGIONAL COUNCIL TOI MOANA 10

11 On-Site Effluent Treatment Draft 24 July 2018 OSET P21 Shared on-site effluent treatment systems Discharges from shared on-site effluent treatment systems will be considered appropriate where: (c) (d) (e) The design of the shared system is supported by an assessment prepared by an OSET Suitability Qualified and Experience Person, and include a completed On-site Wastewater Disposal Site and Soil Evaluation Checklist. The applicant demonstrates that the shared system is appropriate when making more connections to a single tank or discharge from multiple tanks to a single land application area. There is a legal entity to manage the shared system, and a legal agreement to secure the funds for the maintenance and operation of the shared system and land application area. In the Rotorua Lakes catchments, excluding Lake Rotorua, the discharge of nitrogen from the shared system must avoid or minimise adverse effects on lake water quality. In the Lake Rotorua catchment, the discharge of nitrogen from the shared system must either be: (i) (ii) No greater than 15 grams Nitrogen per cubic metre; or Comply with the Nutrient Management Plan for the property under the rules in the LR Lake Rotorua Nutrient Management section of this regional plan. Methods OSET M1 Addressing cumulative effects of un-reticulated communities The Regional Council will: Work with the relevant district or city council, Toi te Ora Public Health Service, local iwi/hapū and the affected community to identify an appropriate solution. This may include a Maintenance Zone, reticulation, targeted action at failing on-site effluent treatment systems, or an alternative. The process to identify a solution will consider: (i) Whether the problem can be addressed by upgrading or replacing onsite effluent treatment systems, provision of reticulation, or other targeted action. (ii) An analysis of the economic, environmental, social and cultural benefits and costs of possible solutions. This may include a health needs assessment. (iii) The impacts of climate change on the community, particularly sea level rise, inundation, and coastal erosion. (iv) Demographic characteristics and projections for the community. (v) (vi) Development plans of local iwi/hapū. Water quality standards set in accordance with national policy guidance, and the actions necessary to achieve those standards within the catchment (refer to the Water Management Area section of this regional plan for the relevant water quality standards). OSET M2 Maintenance Zones The Regional Council will: Establish or remove Maintenance Zones by a change to this regional plan. A Maintenance Zone when a sewerage reticulation system has been commissioned for the community affected, or when the cumulative effects of on-site effluent treatment system discharges are no longer contributing to the BAY OF PLENTY REGIONAL COUNCIL TOI MOANA 11

12 On-Site Effluent Treatment Draft 24 July 2018 (c) degradation of surface or ground waterbodies, or the marine environment, or causing a risk to public health. Provide for a district council to administer all or part of the maintenance and performance inspection programme for a Maintenance Zone in their district. This will be by agreement with Bay of Plenty Regional Council. OSET M3 Support for Papakāinga Housing Developments The Regional Council will: Agree a Memorandum of Understanding with organisations representative of Papakainga housing to clarify the assistance available to resource consent applicants for Papakāinga Housing Developments. The Memorandum of Understanding will provide for: Advice to understand the requirements for on-site effluent treatment systems in this regional plan. Financial support for the completion of an On-site Wastewater Disposal Site and Soil Evaluation (SSE) by an OSET Suitably Qualified and Experienced Person where the activity is a permitted or controlled activity in accordance with this regional plan. BAY OF PLENTY REGIONAL COUNCIL TOI MOANA 12

13 On-Site Effluent Treatment Draft 24 July 2018 OSET Rules Advisory Notes The OSET rules do not apply where there is no discharge to land, including in the following situations: Vault composting toilets where material is collected for composting at a centralised facility, or is disposed of to landfill or a wastewater treatment plant. Where vault systems are used, a long-life tank must be used to avoid tank failure and discharge of sewage into the environment. Composting toilets in motor homes where all liquids and solids are disposed of at approved wastewater or solid waste disposal sites. It is recommended that diverted urine is disposed at a motor home dump station. Compost material should be double-bagged and disposed at a refuse transfer station or municipal landfill site. Contact the relevant district or city council for details. Where material from an alternative toilet system is collected for composting at a centralised facility, or is disposed of to an authorised landfill or wastewater treatment plant. Contact the relevant district or city council for disposal options. Rules that apply in all areas of the region This includes Reticulation Zones, un-reticulated residential areas, Maintenance Zones, and the catchments of the Rotorua Lakes. Permitted activities OSET R1 OSET R2 Temporary discharge of greywater during water restrictions that meets the standards in OSET PAC 10. Discharge of greywater from an outdoor shower that meets the standards in OSET PAC 11. Restricted discretionary activities OSET R3 Discharges of greywater that are not otherwise permitted activities. Prohibited activities OSET R4 OSET R5 New soak holes. Use of explosives to maintain soak holes. Rules that apply in Reticulation Zones, including within the catchments of the Rotorua Lakes Restricted discretionary activities OSET R6 Re-consenting of existing on-site effluent treatment system discharges. Non-complying activities OSET R7 Any discharge from an on-site effluent treatment system that is not a restricted discretionary, or prohibited activity. Prohibited activities OSET R8 Existing soak holes. BAY OF PLENTY REGIONAL COUNCIL TOI MOANA 13

14 On-Site Effluent Treatment Draft 24 July 2018 OSET R9 OSET R10 Discharges from composting toilets, or alternative toilets, except in civil defence emergency situations. Pit latrines. Rules that apply in un-reticulated areas zoned Residential in a district plan, excluding Maintenance Zones and the catchments of the Rotorua Lakes Refer to maps in the relevant District Plan for maps showing Residential Zones. Permitted activities OSET R11 Discharge from a new AWTS or AWTS+NR that meets the standards in OSET PAC 1, 4 and 6. OSET R12 Discharge from an existing AWTS or AWTS+NR that meets the standards in OSET PAC 1 and 3. OSET R13 Discharge from a new septic tank that meets the standards in OSET PAC 1, 4 and 5. OSET R14 Discharge from an existing septic tank that meets the standards in OSET PAC 1 and 2. OSET R15 Existing soak holes that meet the standards in OSET PAC 7. Discretionary activities OSET R16 Discharge from: An on-site effluent treatment system that is not otherwise a permitted or prohibited activity. A shared on-site effluent treatment system. OSET R17 Replacement soak holes. Prohibited activities OSET R18 OSET R19 OSET R20 Existing soak holes that do not otherwise meet the permitted activity standards. Discharges from composting toilets, or alternative toilets, except in civil defence emergency situations. Pit latrines. Rules that apply in Maintenance Zones, excluding Mamaku township and Lake Tarawera Advisory Note Refer to OSET R45 to R52 for rules for the Mamaku Maintenance Zone. Refer to OSET R53 to R56 for rules for Lake Tarawera Maintenance Zone. Maintenance Zones will be removed when a sewerage reticulation scheme for the location has been completed. The Maintenance Zones are: 1. Bryans Beach Refer to Map Tanners Point Refer to Map 6. BAY OF PLENTY REGIONAL COUNCIL TOI MOANA 14

15 On-Site Effluent Treatment Draft 24 July Matatā Refer to Map Tara Road, Papamoa Refer to Map Ongare Point Refer to Map Gisborne Point Refer to Map Hinehopu Refer to Map Lake Rotomā Refer to Map 4 and 5. Permitted activities OSET R21 Discharge from a new AWTS or AWTS+NR that meets the standards in OSET PAC 1, 4 and 6. OSET R22 Discharge from an existing AWTS or AWTS+NR that meets the standards in OSET PAC 1 and 3. OSET R23 Discharge from a new septic tank that meets the standards in OSET PAC 1, 4, 5 and 8. OSET R24 Discharge from an existing septic tank that meets the standards in OSET PAC 1, 2 and 8. Discretionary activities OSET R25 Discharge from: An on-site effluent treatment system that is not otherwise a permitted or prohibited activity. A shared on-site effluent treatment system. Prohibited activities OSET R26 OSET R27 OSET R28 Existing soak holes. Discharges from composting toilets, or alternative toilets, except in civil defence emergency situations. Pit latrines Rules that apply in all other areas outside reticulated areas, un-reticulated residential areas, Maintenance Zones, and the catchments of the Rotorua Lakes Permitted activities OSET R29 Discharge of greywater that meets the standards in OSET PAC 12. OSET R30 Discharge from a composting toilet that meets the standards in OSET PAC 13. OSET R31 Discharge from an Alternative Toilet that meets the standards in OSET PAC 14. OSET R32 Discharge from a new AWTS or AWTS+NR that meets the standards in OSET PAC 1, 4 and 6. OSET R33 Discharge from an existing AWTS or AWTS+NR that meets the standards in OSET PAC 1 and 3. OSET R34 Discharge from a new septic tank that meets the standards in OSET PAC 1, 4 and 5. OSET R35 Discharge from an existing septic tank that meets the standards in OSET PAC 1 and 2. BAY OF PLENTY REGIONAL COUNCIL TOI MOANA 15

16 On-Site Effluent Treatment Draft 24 July 2018 OSET R36 Existing soak holes that meets the standards in OSET PAC 7. OSET R37 Pit latrines that meets the standards on OSET PAC 15. Restricted discretionary activities OSET R38 OSET R39 Discharge from a composting toilet that is not otherwise a permitted activity. Discharge from an alternative toilet that is not otherwise a permitted activity. Discretionary activities OSET R40 Discharge from: An on-site effluent treatment system that is not otherwise a permitted or prohibited activity. A shared on-site effluent treatment system. OSET R41 OSET R42 Replacement soak holes. Pit latrines that do not meet the permitted activity standards. Prohibited activities OSET R43 Existing soak holes that do not meet the permitted activity standards. Rules that apply in the catchments of the Rotorua Lakes outside Reticulation Zones Refer to Map 1 for the Rotorua Lakes catchments. All areas in the catchments of the Rotorua Lakes Prohibited activities OSET R44 Existing soak holes. Mamaku Maintenance Zone Refer to Map 8 for the Mamaku Maintenance Zone. Permitted activities OSET R45 Discharge from a new AWTS+NR that meets the standards in OSET PAC 1, 4 and 6. OSET R46 OSET R47 Discharge from an existing AWTS+NR or AWTS (without NR) that meets the standards in OSET PAC 1 and 3. Discharge from an existing septic tank that meets the standards in OSET PAC 1, 2 and 8. Discretionary activities OSET R48 Discharge from: (c) (d) (e) A new or existing AWTS+NR; An existing AWTS (without NR); An existing septic tank; that is not otherwise a permitted activity. BAY OF PLENTY REGIONAL COUNCIL TOI MOANA 16

17 On-Site Effluent Treatment Draft 24 July 2018 OSET R49 Discharge from a shared on-site effluent treatment system. Non-complying activities OSET R50 Discharge from a new AWTS (without NR). Prohibited activities OSET R51 OSET R52 Discharge from a new septic tank. Discharges from composting toilets, or alternative toilets, except in civil defence emergency situations. Lake Tarawera Maintenance Zone Refer to Maps 5 and 6 for the Lake Tarawera Maintenance Zone. Permitted activities OSET R53 Discharge from a new AWTS+NR that meets the standards in OSET PAC 1, 4 and 6. OSET R54 OSET R55 Discharge from an existing AWTS+NR or AWTS (without NR) that meets the standards in OSET PAC 1 and 3. Discharge from an existing septic tank that meets the standards in OSET PAC 1, 2 and 8. Discretionary activities OSET R56 The discharge from: (c) (d) (e) (f) A new or existing AWTS+NR that does not meet the permitted activity standards. An existing AWTS (without NR) that does not meet the permitted activity standards. An existing septic tank that does not meet the permitted activity standards. A new AWTS (without NR). A new septic tank. A shared on-site effluent treatment system. Lake Rotorua groundwater catchment, outside Reticulation Zones, and excluding the Mamaku Maintenance Zone The Lake Rotorua groundwater catchment within the Bay of Plenty Region boundaries is shown on Map LR1 in the LR Lake Rotorua Nutrient Management section of this regional plan. Permitted activities OSET R57 For all property sizes, the discharge from: A new AWTS+NR that meets the standards in OSET PAC 1, 4 and 6. An existing AWTS+NR or AWTS (without NR) that meets the standards in OSET PAC 1 and 3. (c) An existing septic tank that meets the standards in OSET PAC 1 and 2. BAY OF PLENTY REGIONAL COUNCIL TOI MOANA 17

18 On-Site Effluent Treatment Draft 24 July 2018 Controlled activities OSET R58 For properties larger than 5 hectares, the discharge from: A new AWTS (without NR) that meets the standards in OSET PAC 1, 4 and 6; or A new septic tank that meets the standards in OSET PAC 1, 4 and 5 ; where the additional nitrogen discharge complies with the Nitrogen Discharge Allocation for the property. Nitrogen Discharge Allocation is defined in LR Lake Rotorua Nutrient Management section of this regional plan. Discretionary activities OSET R59 OSET R60 Discharge from a new or existing AWTS+NR that does not meet the permitted activity conditions. Discharge from a shared on-site effluent treatment system. Non-complying activities OSET R61 Discharge from a new AWTS (without NR) or new septic tank that is not a controlled activity, and the additional nitrogen discharge can be off-set on the property. Prohibited activities OSET R62 Discharge from a new AWTS (without NR) or new septic tank that is not a controlled activity, and the additional nitrogen discharge cannot be off-set on the property. Lakes Rotomahana, Rerewhakaaitu, Rotokakahi and Ōkaro catchments Permitted activities OSET R63 Discharge from a new AWTS+NR that meets the standards in OSET PAC 1, 4 and 6. OSET R64 Discharge from an existing AWTS or AWTS+NR that meets the standards in OSET PAC 1 and 3. OSET R65 Discharge from an existing septic tank that meets the standards in OSET PAC 1 and 2. Controlled activities OSET R66 The discharge from a new AWTS (without NR) that meets the standards in OSET PAC 1, 4 and 6. Discretionary activities OSET R67 The discharge from: (c) (d) (e) (f) A new or existing AWTS+NR that does not meet the permitted activity standards. An existing AWTS (without NR) that does not meet the permitted activity standards. A new AWTS (without NR) that does not meet the controlled activity conditions. An existing septic tank that does not meet the permitted activity standards. A new septic tank. A shared on-site effluent treatment system. BAY OF PLENTY REGIONAL COUNCIL TOI MOANA 18

19 On-Site Effluent Treatment Draft 24 July 2018 Lake Ōkataina catchment Permitted activities OSET R68 Discharge from a new AWTS+NR that meets the standards in OSET PAC 1, 4 and 6. OSET R69 Discharge from an existing AWTS+NR or AWTS (within NR) that meets the standards in OSET PAC 1 and 3. Controlled activities OSET R70 The discharge from a new AWTS (without NR) that meets the standards in OSET PAC 1, 4 and 6. Discretionary activities OSET R71 The discharge from: (c) (d) (e) A new or existing AWTS+NR that does not meet the permitted activity standards. An existing AWTS (without NR) that does not meet the permitted activity standards. A new AWTS (without NR) that does not meet the controlled activity conditions. A new or existing septic tank. A shared on-site effluent treatment system. Lake Tikitapu catchment, outside areas serviced by reticulated sewage schemes Permitted activities OSET R72 Discharge from a new AWTS+NR that meets the standards in OSET PAC 1, 4 and 6. Discretionary activities OSET R73 OSET R74 The discharge from a new AWTS+NR that does not meet the permitted activity standards. Discharge from a shared on-site effluent treatment system. Prohibited activities OSET R75 The discharge from: A new or existing AWTS (without NR). A new or existing septic tank. Lakes Rotoiti, Rotomā, Rotoehu, and Okareka catchments, outside areas serviced by reticulated sewage schemes Permitted activities OSET R76 Discharge from a new AWTS+NR that meets the standards in OSET PAC 1, 4 and 6. OSET R77 Discharge from an existing AWTS+NR or AWTS (within NR) that meets the standards in OSET PAC 1 and 3. OSET R78 Discharge from an existing septic tank that meets the standards in OSET PAC 1 and 2. BAY OF PLENTY REGIONAL COUNCIL TOI MOANA 19

20 On-Site Effluent Treatment Draft 24 July 2018 Discretionary activities OSET R79 The discharge from: (c) (d) (e) A new or existing AWTS+NR that does not meet the permitted activity standards. An existing AWTS (without NR) that does not meet the permitted activity standards. A new AWTS (without NR). An existing septic tank that does not meet the permitted activity standards. A shared on-site effluent treatment system. Prohibited activities OSET R80 The discharge from a new septic tank. Rules that apply to Papakāinga Housing Developments outside Reticulation Zones Papakāinga Housing Developments in Tauranga, Western Bay of Plenty, Whakatāne, Kawerau, Ōpōtiki and Taupō (part in Bay of Plenty Region) districts Permitted activities OSET R81 For Papakainga Housing Developments with up to 4 dwellings on a property: The discharge from a new AWTS or AWTS+NR that meets the standards in OSET PAC 1, 4, and 6. Discharge from an existing AWTS or AWTS+NR that meets the standards in OSET PAC 1 and 3. (c) Discharge from a new septic tank that meets the standards in OSET PAC 1, 4 and 5. (d) Discharge from an existing septic tank that meets the standards in OSET PAC 1 and 2. OSET R82 For Papakainga Housing Developments with up to 10 dwellings and associated Community Facilities with individual on-site effluent treatment systems on multipleowned Māori land: The discharge from a new AWTS or AWTS+NR that meets the standards in OSET PAC 1, 4, 6 and 9. Discharge from an existing AWTS or AWTS+NR that meets the standards in OSET PAC 1, 3 and 9. (c) Discharge from a new septic tank that meets the standards in OSET PAC 1, 4, 5 and 9. (d) Discharge from an existing septic tank that meets the standards in OSET PAC 1, 2 and 9. Controlled activities OSET R83 Papakainga Housing Developments with up to 10 dwellings and associated Community Facilities with shared on-site effluent treatment systems on multiple-owned Māori land, that meet the conditions in OSET CAC1 (Controlled Activity Conditions for Papakāinga Housing Developments). Discretionary activities OSET R84 Discharges from on-site effluent treatment systems on Papakāinga Housing Developments that are not otherwise permitted or controlled activities. BAY OF PLENTY REGIONAL COUNCIL TOI MOANA 20

21 On-Site Effluent Treatment Draft 24 July 2018 Papakainga Housing Developments in Rotorua Lakes District (part in Bay of Plenty Region) Permitted activities OSET R85 For Papakainga Housing Developments with up to 4 dwellings on a property: (c) (d) (e) (f) In the Lake Rotorua catchment, OSET R57 to R62 apply. In the Lake Rotomahana, Rerewhakaaitu, Rotokakahi and Ōkaro catchments, OSET R63 to R67 apply. In the Lake Okataina catchment, OSET R68 to R71 apply. In the Lake Tikitapu catchment, OSET R72 to R75 apply. In the Lake Rotoiti, Rotomā, Rotoehu and Ōkāreka catchments, OSET R76 to R80 apply. In the Lake Tarawera catchment, OSET R53 to R56 apply. OSET R86 For Papakainga Housing Developments with up to 10 dwellings and associated Community Facilities with individual on-site effluent treatment systems on multipleowned Māori land, subject to meeting the standards in OSET PAC 9, and: (c) (d) (e) (f) In the Lake Rotorua catchment, OSET R57 to R62 apply. In the Lake Rotomahana, Rerewhakaaitu, Rotokakahi and Ōkaro catchments, OSET R63 to R67 apply. In the Lake Okataina catchment, OSET R68 to R71 apply. In the Lake Tikitapu catchment, OSET R72 to R75 apply. In the Lake Rotoiti, Rotomā, Rotoehu and Ōkāreka catchments, OSET R76 to R80 apply. In the Lake Tarawera catchment, OSET R53 to R56 apply. Controlled activities OSET R87 Papakainga Housing Developments with up to 10 dwellings and associated Community Facilities with shared on-site effluent treatment systems on multiple-owned Māori land, subject to meeting the conditions in standards in OSET CAC1 (Controlled Activity Conditions for Papakāinga Housing Developments), and the type of on-site effluent treatment system proposed for the development is either a permitted or controlled activity under OSET R45 to R80 as applicable to the lake catchment where the development is located. Discretionary activities OSET R88 Discharges from on-site effluent treatment systems on Papakāinga Housing Developments that are not otherwise permitted or controlled activities. BAY OF PLENTY REGIONAL COUNCIL TOI MOANA 21

22 On-Site Effluent Treatment Draft 24 July 2018 OSET Permitted Activity Conditions (PAC) Advisory Note The discharge of odour from an on-site effluent treatment system, composting toilet, greywater discharge, alternative toilet or pit latrine must also comply with permitted activity rule AQ R1 of this regional plan, or obtain a resource consent. OSET PAC 1 Existing and new septic tanks, AWTS and AWTS+NR Source of discharge (c) The discharge contains only domestic wastewater, as defined in this regional plan. Where the discharge is from a septic tank, AWTS or AWTS+NR that existed at [date of plan notification], the discharge is from: (i) A single dwelling or building on a property; or (ii) Up to four dwellings or buildings on a single property provided that each dwelling or building has an individual wastewater system that meets all the permitted activity conditions. Where the discharge is from a new septic tank, AWTS or AWTS+NR, the discharge is from: (i) A single dwelling or building on a property where the lot size is larger than 1200m 2 ; or (ii) Up to a total of four dwellings or buildings on a single property provided each individual dwelling or building and associated wastewater system is on an area not less than the minimum area specified in the table below. Number of bedrooms 1 or Minimum area (m 2 ) (d) Where a property with an existing on-site effluent treatment system is subdivided, the lot with the existing on-site effluent treatment system must be a minimum of 1200m 2. For clarity, this means that where the lot with the existing on-site effluent treatment system is less than 1200m2, the discharge ceases to be a permitted activity. Discharge conditions (e) (f) There is no discharge to surface water. The discharge shall not: (i) Cause overland flow or ponding of effluent, (ii) Cause the soil to become saturated, (iii) Cause or contribute to slippage, subsidence, erosion or inundation on any property, (iv) Be aerosolised or applied onto land by uncovered surface or spray irrigation. BAY OF PLENTY REGIONAL COUNCIL TOI MOANA 22

23 On-Site Effluent Treatment Draft 24 July 2018 (g) (h) (i) (j) (k) (l) The discharge shall not contaminate groundwater. The discharge shall not exceed 2000 litres (2m 3 ) per day. The discharge does not occur within 20 horizontal metres of a Significant Geothermal Feature. The tank shall be structurally sound, and watertight to ensure that stormwater or ground water does not enter and that effluent can t leak out. This includes the following requirements: (i) Stormwater downpipes shall not be connected to the sanitary drainage or tank. (ii) Gully traps are at level that prevents surface flooding entering the tank. Overland stormwater flow shall be diverted away from the land application area. Stormwater soakage pits must not be located in the land application area. Removal of infrastructure (m) All on-site effluent treatment system infrastructure is removed when the associated dwelling or building is removed or relocated, including as a result of natural hazards, or the implications climate change (including sea level rise). This does not apply where a new building will be constructed that uses the onsite effluent treatment system. Maintenance (n) The treatment system (i.e. the septic tank, AWTS and AWTS+NR) and disposal field must be protected and maintained to ensure the discharge complies with conditions (e), (f) and (g) above. Connection to reticulation (o) Where a community sewage reticulated scheme is constructed to service the location of the OSET system: (i) The property must be connected to the reticulation scheme, and (ii) The on-site effluent treatment system is decommissioned within 3 months of connection. In the context of this condition, decommissioned means that drain pipes into and out of the OSET system have been physically disconnected and the tank pumped out to ensure no discharge can occur. For clarity, this means that the onsite effluent treatment system ceases to be a permitted activity at the end of that 3 month period, unless it is decommissioned. Dwelling alteration (p) Where a dwelling or building is expanded, altered in a manner that increases the potential occupancy level beyond its design or reconstructed capacity set out in Schedule OSET One: (i) An OSET Suitably Qualified and Experienced Person is to assess the adequacy of the existing on-site effluent treatment system to provide for the increased occupancy level. The assessment will use the Onsite Wastewater Disposal Site and Soil Evaluation Checklist (available on Bay of Plenty Regional Council s website). (ii) Where the On-site Wastewater Disposal Site and Soil Evaluation Checklist shows the existing on-site effluent treatment system has sufficient treatment and disposal field capacity for the potential occupancy of the dwelling or building expansion or alteration, and otherwise complies with the relevant permitted activity rule, then that system is a permitted activity. (iii) The existing on-site effluent treatment system may be upgraded, added to, or replaced to comply with the New Zealand Standards and BAY OF PLENTY REGIONAL COUNCIL TOI MOANA 23

24 On-Site Effluent Treatment Draft 24 July 2018 (iv) the relevant permitted activity rules. This includes replacing the existing system with an alternative system (e.g. replacing a septic tank with an AWTS+NR). Where the capacity in (ii) above of the existing on-site effluent treatment system is insufficient for the potential occupancy of the expansion or alteration, and the system is not upgraded to comply with the relevant permitted activity rule, then a resource consent will be required. Failure of on-site effluent treatment system (q) Where an on-site effluent treatment system fails (i.e. this includes discharging into water, ponding, blockages and overflowing, discharging onto neighbouring land or road or drain), and normal maintenance (e.g. visit by a drainlayer, pump out of tank, repair of part of infrastructure) does not fix the problem: (i) An OSET Suitably Qualified and Experienced Person is to assess the existing on-site effluent treatment system. (ii) The existing on-site effluent treatment system may be upgraded or replaced to comply with the New Zealand Standards and the relevant permitted activity rule for the location and type of on-site effluent treatment system. (iii) Where the upgrade or replacement can not comply with the relevant permitted activity rule, a resource consent will be required. Advisory Note A building consent may also be required for upgrading, adding to or replacing on-site effluent treatment systems. OSET PAC 2 Existing septic tanks The septic tank shall have a liquid capacity of at least the minimum tank size for the associated dwelling size in the table below. The land application trench length shall not be less than the minimum length for the associated dwelling size in the table below. Number of Bedrooms Minimum tank size (litres) Minimum Land Application Trench Length (metres) For septic tanks installed before 6 July 1996 For septic tanks installed after 6 July 1996 For septic tanks installed before 6 July 1996 For septic tanks installed after 6 July or (c) Where an outlet filter has been installed, it must comply with NZS :2008 Appendix D. (d) The property owner shall ensure that sludge and scum in the septic tank does not exceed one third of the liquid volume of the tank at any time. BAY OF PLENTY REGIONAL COUNCIL TOI MOANA 24

25 On-Site Effluent Treatment Draft 24 July 2018 OSET PAC 3 Existing AWTS and AWTS+NR (c) (d) (e) (f) The location of the land application area in relation to the distance from surface waterbodies complies with the provisions of NZS 1547:2012 Appendix R. The effluent quality from the AWTS system must be independently verified to comply with NZS 1547:2012 M2.1. A list of compliant AWTS systems can be found on Bay of Plenty Regional Council s website. Where an AWTS+NR is located in the catchments of the Rotorua Lakes; (i) The treatment system must be capable of reducing the total Nitrogen (TN) in the discharge to a concentration not exceeding 15 grams per cubic metre, measured as nitrogen, prior to discharge to the land application system. This is measured after a settling in period. (ii) The AWTS+NR system must be approved as achieving the TN limit in (i). A list of approved systems is available on Bay of Plenty Regional Council s website. The land application area must be operated and maintained in accordance with Section 6.3, Appendix T and Appendix U of NZS 1547:2012. The Aerated Wastewater Treatment System and discharge system shall be operated, serviced and maintained in accordance with the manufacturers guidelines or design specification. A written record of all servicing and maintenance carried out on the wastewater treatment system shall be kept and a copy of this record shall be forwarded to the Regulatory Compliance team at Bay of Plenty Regional Council within 90 days of a service or maintenance check required by condition (e) above. OSET PAC 4 New septic tanks, AWTS and AWTS+NR (c) (d) (e) (f) The design shall be supported by a completed On-site Wastewater Disposal Site and Soil Evaluation Checklist (available on Bay of Plenty Regional Council s website). The evaluation checklist shall be completed by an OSET Suitably Qualified and Experienced Person accredited in site and soil assessment for on-site wastewater management system design. Dwelling occupancy shall be determined by the Occupancy Allowances table in Schedule OSET One. The discharge is not to a soak hole. Where an on-site effluent treatment system is within 50 metres of a groundwater bore, the setback distance of the land application area must be determined in accordance with NZS 1547:2012 Appendix R. The discharge is not within 1000 horizontal metres of a groundwater bore or spring that supplies drinking water to any of the following: (i) A municipal water supply. (ii) A facility operated by a government department, including Defence (military bases), Justice (prisons), Conservation (national parks). (iii) Schools, including early childhood, primary, secondary and tertiary education facilities. (iv) Large industries. (v) Camping grounds. (vi) Marae. Where a proposed discharge is within 1000 horizontal metres, a resource consent is required. The land application system must be at least 600 mm above ground water winter maximum level. (g) The land application area shall comply with the provisions of NZS 1547:2012 On site domestic wastewater management. BAY OF PLENTY REGIONAL COUNCIL TOI MOANA 25

26 On-Site Effluent Treatment Draft 24 July 2018 (h) (i) (j) Where the land application area is a trench, bed or mound designed under NZS 1547:2012 Table L1 and secondary treated effluent is specified, the effluent quality must meet the requirements of Appendix M2.2. In coastal areas, new or replacement on-site effluent treatment system infrastructure is located in consideration of coastal erosion, particularly the Coastal Hazard Zone. The design of the septic tank or AWTS is appropriate in relation to the implications of climate change at the location for the next 50 years: (i) Sea level rise. (ii) (iii) Rising groundwater levels. Rainfall patterns, including variability and increasing number of extreme rainfall events. OSET PAC 5 New septic tanks The septic tank will have a minimum capacity of 4500 litres. The installation of a septic tank shall comply with the provisions of NZS 1547:2012 On-site domestic wastewater management. (c) The septic tank shall comply with the provisions of NZS :2008. (d) The design and construction of the septic tank shall comply with NZS :2008 On-site wastewater treatment units Septic tanks Sections 3 and 4. Compliance with this requirement shall be demonstrated by a certificate from an OSET Suitably Qualified and Experienced Person. (e) An outlet filter must be installed that complies with NZS :2008 Appendix D. (f) The access points for pump out of tank and for cleaning of the outlet filter shall be raised to ground level. (g) The designer/installer shall provide the owner with a set of operational details sufficient for the owner to operate the system, understand the limitations of the system and the maintenance required to ensure the system operates satisfactorily. (h) The property owner shall ensure that sludge and scum in the septic tank does not exceed one third of the liquid volume of the tank at any time. (i) A 100% reserve land application area must be provided. This area must be kept free of permanent buildings and structures. (j) Septic tank effluent may not be discharged through drippers. (k) The land application system must be above the 1 in 20 year flood contour. OSET PAC 6 New AWTS and AWTS+NR The installation of an Aerated Wastewater Treatment System (AWTS) shall comply with the provisions of NZS 1547:2012 On site domestic wastewater management. The AWTS shall comply with the provisions of NZS :2008. The design and construction of the AWTS shall comply with NZS :2008 On-site wastewater treatment units Part 1: Septic tanks Sections 3 and 4, NZS :2008 On-site wastewater treatment units Part 3: Aerated wastewater treatment systems, Section 2.4. Compliance with this requirement shall be demonstrated by a certificate from a Suitably Qualified and Experienced Person. (c) The performance of the AWTS shall have been tested in accordance with OSET P9. The test certificate for the AWTS unit selected must be less than five years old. (d) Where an AWTS+NR is located in the catchments of the Rotorua Lakes; (i) The treatment system must be capable, after a settling in period, of reducing the total Nitrogen (TN) in the discharge to a concentration BAY OF PLENTY REGIONAL COUNCIL TOI MOANA 26

27 On-Site Effluent Treatment Draft 24 July 2018 (e) (f) (g) not exceeding 15 grams per cubic metre, measured as nitrogen, prior to discharge to the land application system. (ii) The AWTS+NR system must be approved as achieving the TN limit in (i). A list of approved systems is available from Bay of Plenty Regional Council s website. The designer/installer shall provide the owner with a set of operational details sufficient for the owner to operate the system, understand the limitations of the system and the maintenance required to ensure the system operates satisfactorily. The AWTS must be operated and maintained in accordance with the manufacturer s instructions. Effluent to be discharged through drippers must be of at least secondary treated quality. OSET PAC 7 Soak holes that existed before 1 December 1996 The soak hole was installed and commissioned before 1 December The soak hole is not within the catchments of the Rotorua Lakes, or in a Maintenance Zone. (c) The soak hole is not located in the Stability Area Minden A, B1, B2, C or U as identified in the Western Bay of Plenty District Plan. (d) The base of the soak hole is at least 2 vertical metres above the highest groundwater table. (e) The septic tank size is appropriate for the occupancy allowances in Schedule OSET One. (f) There is no discharge to surface water. (g) The soak hole shall not contaminate groundwater. (h) The discharge shall not: (i) Cause overland flow or ponding of effluent, (ii) Cause the soil to become saturated, (iii) Cause or contribute to slippage, subsidence, erosion or inundation on any property. OSET PAC 8 Maintenance Zones septic tanks (c) (d) (e) (f) The discharge is not to a soak hole. An outlet filter must be installed that complies with NZS :2008 Appendix D. The septic tank shall be pumped out and inspected, and the outlet filter cleaned and inspected by an OSET Approved Certifier at three (3) yearly intervals, subject to (g). A list of OSET Approved Certifiers is available on Bay of Plenty Regional Council s website. After each inspection in (c) the OSET Approved Certifier shall complete a report on the septic tank and outlet filter and provide one copy to the property owner and one copy to Bay of Plenty Regional Council. Where the OSET Approved Certifier reports that the septic tank and outlet filter complies with permitted activity conditions, the Bay of Plenty Regional Council will issue the property owner with an OSET Approval. Where the OSET Approved Certifier reports that the septic tank and outlet filter do not comply with permitted activity conditions, the Bay of Plenty Regional Council will notify the property owner outlining the repairs or upgrades required for their system to comply with the relevant permitted activity rule. When the repairs or upgrades have been completed, the owner must advise the Bay of Plenty Regional Council and a further inspection will be made. Discharge from the system shall be deemed to remain a permitted activity until the repairs or BAY OF PLENTY REGIONAL COUNCIL TOI MOANA 27

28 On-Site Effluent Treatment Draft 24 July 2018 (g) upgrades have been completed or for a period of three months whichever is the lesser. Where: (i) A septic tank is fitted with an approved outlet filter that is compliant at all times with the provisions of Appendix D of NZS :2008 and is regularly cleaned and maintained to a high sanitary standard; and (ii) The septic tank has a liquid volume greater than the minimum permitted tank sizes specified in OSET PAC 2; and (iii) The tank lid is easily accessible and can be raised without the need of lifting equipment so that the sludge level in the tank can be assessed, The period between inspections may be extended for up to six (6) years. Where the inspection period is extended, this shall be notified to the property owner on the OSET Approval. OSET PAC 9 Papakāinga housing developments (c) Each dwelling or associated community facility has its own septic tank or aerated wastewater treatment system. Each dwelling or associated community facility has its own individual, associated and adjacent land application area of not less than the minimum area for the house size as specified in OSET P18. The Papakāinga housing development is undertaken in accordance OSET P18(c). OSET PAC 10 Temporary discharge of greywater in urban areas (c) (d) (e) (f) (g) The discharge is temporary, and only during times when water restrictions are in place from the respective district or city council. The greywater shall only be from: (i) Laundry washing machine; (ii) Bath or shower. There is no greywater from a commercial operation. The greywater is discharged on the same property as the dwelling it originates from. The discharge is not to vegetable crops. The discharge site is not located within: (i) 20 horizontal metres from any surface water, (ii) 50 horizontal metres from a groundwater bore or spring that supplies drinking water for human consumption. (iii) 50 horizontal metres from the Coastal Marine Area. The discharge shall not: (i) Cause surface ponding or run-off. (ii) Cause or contribute to slippage, subsidence, erosion or inundation at the site. OSET PAC 11 Greywater from an outdoor shower (c) (d) The discharge is to land soakage. The greywater is discharged on the same property as the dwelling it originates from. The discharge is not to vegetable crops. The discharge site is not located within: (i) 20 horizontal metres from any surface water. BAY OF PLENTY REGIONAL COUNCIL TOI MOANA 28

29 On-Site Effluent Treatment Draft 24 July 2018 (h) (ii) 50 horizontal metres from a groundwater bore or spring that supplies drinking water for human consumption. (iii) 50 horizontal metres from the Coastal Marine Area. The discharge shall not: (i) Cause surface ponding or run-off. (ii) Cause or contribute to slippage, subsidence, erosion or inundation at the site. OSET PAC 12 Greywater discharges outside urban areas The greywater shall only be from: (i) Laundry washing machine; (ii) Bath or shower. There is no greywater from a commercial operation. (c) The greywater is discharged on the same property as the dwelling it originates from. (d) The discharge shall not exceed 1,000 litres per day or 7,000 cubic metres per week per dwelling. (e) There is no discharge to vegetable crops. (f) The discharge is to subsurface irrigation, using a method from NZS 1547:2012 Appendix L, and be: (i) Covered with no less than 150 millimetres of mulch or bark, or be at least 100mm beneath the surface of the soil. (ii) Have a minimum of 600 millimetres depth to the water table below the irrigation line emitters. (g) The area to be irrigated shall be determined by reference to NZS 1547:2012 On-site domestic wastewater management Table M1. (h) The discharge site is not located within: (iv) 20 horizontal metres from any surface water. (v) 50 horizontal metres from a groundwater bore or spring that supplies drinking water for human consumption. (vi) 50 horizontal metres from the Coastal Marine Area. (i) The discharge shall: (i) Be at a rate that does not cause ponding on, or runoff from the area being irrigated. (ii) Not cause or contribute to slippage, subsidence, erosion or inundation at the site. (i) The greywater system must provide diversion to either a reticulated sewage system (where available), or an on-site effluent treatment system for when weather conditions prevent garden irrigation, or the greywater system fails. (j) The greywater must be discharged within 24 hours. Where greywater has been stored from more than 24 hours, the greywater must be diverted to either a reticulated sewage system (where available), or an on-site effluent treatment system. (k) Where a holding tank is used for storage: (i) The greywater tank shall have a minimum capacity as set out in NZS 1547:2012 On-site domestic wastewater management Table J2. (ii) The tank shall comply with with NZS 1547:2012 On-site domestic wastewater management. (l) An outlet filter must be installed on the greywater tank. This is to ensure the long term operation of the system. (m) The greywater system and filter must be operated and maintained in accordance with the manufacturer s instructions. BAY OF PLENTY REGIONAL COUNCIL TOI MOANA 29

30 On-Site Effluent Treatment Draft 24 July 2018 OSET PAC 13 Composting toilets outside urban areas The discharge is on a property not less than 20,000m 2 (2 hectares). The composting toilet must meet the requirements of NZS :2008 and NZS 1546:2:2008. The composting toilet must be operated and maintained in accordance with the manufacturer s instructions. Urine diversion (c) Where urine is diverted prior to entering the composting tank, it shall be managed in accordance with either (i) or (ii): (i) Where urine is diverted to evaporation system; a. Only an approved evaporation system is used. A list of approved systems is available on the Bay of Plenty Regional Council website. b. There is no discharge to land or water from the evaporation system. c. Any odour discharge from the evaporation system complies with AQ R1. (ii) Where urine is diverted to a storage tank for collection by a licenced liquid waste collection operator; a. There is no discharge to land or water from the storage tank. b. The urine is disposed of at a municipal wastewater treatment plant. c. Any odour discharge from the evaporation system complies with AQ R1. Leachate diversion (d) Where leachate (liquid from the base of the composting unit) is diverted from the composting unit, it shall be managed in accordance with either (i), (ii) or (iii): (i) Where leachate is diverted to evaporation system; a. Only an approved evaporation system is used. A list of approved systems is available on the Bay of Plenty Regional Council website. b. There is no discharge to land or water from the evaporation system. c. Any odour discharge from the evaporation system complies with AQ R1. (ii) Where leachate is diverted to a storage tank for collection by a licenced liquid waste collection operator; d. There is no discharge to land or water from the storage tank. e. The leachate is disposed of at a municipal wastewater treatment plant. f. Any odour discharge from the evaporation system complies with AQ R1. (iii) Where leachate is diverted to a treatment and disposal system, the system must be compliant with NZS 1547:2012. Use of composted material (e) The material from the composting toilet must be composted for a minimum of 12 months prior to discharge. This can be achieved through the use of secondary composting on-site using an enclosed compost bin or tumbler, or retaining material within the composting toilet unit for the required period. (f) The discharge area for composting material is not located within: (i) 50 horizontal metres of a surface waterbody. (ii) 50 horizontal metres of the Coastal Marine Area. (iii) 50 horizontal metres of a groundwater bore or spring that supplies drinking water for human consumption. (iv) 1.5 horizontal metres of a property boundary. (v) An area where there is water ponding on the soil surface. (vi) An area where the highest groundwater level is less than 600 vertical millimetres (mm). (g) An area of not less than 1350m 2 must be set aside for the discharge of composted material. (h) There is no discharge of composted material to vegetable crops. BAY OF PLENTY REGIONAL COUNCIL TOI MOANA 30

31 On-Site Effluent Treatment Draft 24 July 2018 (i) (j) (k) (l) The composted material must be worked into the soil, or buried under a minimum soil cover of 200 millimetres (mm). The discharge area shall be used only once in any 12 month period. Where the discharge is within the Lake Rotorua groundwater catchment within the Bay of Plenty Region boundaries as defined in Map LR1, the nitrogen discharge from the compost material must comply with the Nutrient Management Plan for the property under the rules in the LR Lake Rotorua Nutrient Management section of this regional plan. Where the discharge is not within the Lake Rotorua groundwater catchment, the discharge of nitrogen from the composting material shall not exceed 200 kg of Nitrogen per hectare. OSET PAC 14 Approved alternative toilet systems outside urban areas (c) (d) (e) (f) (g) (h) Only an approved alternative toilet system is used. A list of approved alternative toilet systems can be found on Bay of Plenty Regional Council s website. There is no discharge of material to food crops, excluding fruit trees. The discharge area for material is not located within: (i) 50 horizontal metres of a surface waterbody. (ii) 50 horizontal metres of the Coastal Marine Area. (iii) 50 horizontal metres of a groundwater bore or spring that supplies drinking water for human consumption. (iv) 1.5 horizontal metres of a property boundary. (v) An area where there is water ponding on the soil surface. (vi) An area where the highest groundwater level is less than 600 vertical millimetres (mm). Where the material is buried, it must be buried under a minimum soil cover of 200 millimetres (mm). For clarity, the requirement of (d)(ii) must also be met. Where the material is composted prior to discharge to land, it must be composted for a minimum of 12 months prior to discharge. This can be achieved through the use of an enclosed compost bin or tumbler. The discharge area shall be used only once in any 12 month period. Where the discharge is within the Lake Rotorua groundwater catchment within the Bay of Plenty Region boundaries as defined in Map LR1, the nitrogen discharge from the compost material must comply with the Nutrient Management Plan for the property under the rules in the LR Lake Rotorua Nutrient Management section of this regional plan. The alternative toilet must be operated and maintained in accordance with the manufacturer s instructions. Urine diversion (i) Where urine is diverted prior to entering a treatment tank, it shall be managed in accordance with either (i) or (ii): (i) Where urine is diverted to evaporation system; a. Only an approved evaporation system is used. A list of approved systems is available on the Bay of Plenty Regional Council website. b. There is no discharge to land or water from the evaporation system. c. Any odour discharge from the evaporation system complies with AQ R1. (ii) Where urine is diverted to a storage tank for collection by a licenced liquid waste collection operator; d. There is no discharge to land or water from the storage tank. e. The urine is disposed of at a municipal wastewater treatment plant. f. Any odour discharge from the evaporation system complies with AQ R1. BAY OF PLENTY REGIONAL COUNCIL TOI MOANA 31

32 On-Site Effluent Treatment Draft 24 July 2018 OSET PAC 15 Pit Latrines (c) (d) (e) (f) (g) (h) (i) (j) The pit latrine shall only be used for the disposal of human effluent. The pit latrine is not used for the disposal of wastewater from chemical toilets. The pit latrine has low and intermittent usage. This includes trampers huts, and remote camp sites. There is no direct discharge of human effluent above the soil surface, to surface water, or to groundwater. The pit latrine is not located within: (i) 50 horizontal metres of a groundwater bore or spring that supplies drinking water for human consumption. (ii) 50 horizontal metres from a surface waterbody or coastal marine area. (iii) 10 horizontal metres from the property boundary. (iv) 5 horizontal metres from any dwelling on the same site. (v) In an area that carries stormwater run-off during storm events. or (vi) An area where the highest groundwater level is less than 2 vertical metres below the base of the pit latrine. The pit latrine shall not be located at a site where the soil type comprises gravels, coarse sands, scoria, fissured rock or other materials that would allow the free migration of liquid waste matter away from the pit. The waste in the pit latrine shall not accumulate to a height closer than 1 metre below the original ground surface. When no longer in use, the pit latrine shall be capped to ground level with a minimum of 1 metre of soil. Stormwater shall be diverted to avoid entering the pit latrine. The pit latrine shall be constructed and maintained to avoid the risk of people (especially children) and animals falling into the hole. OSET Resource Consent Matters Advisory Note Where a resource consent is required for public toilets, the respective territorial authority or relevant agency may apply for global consents that cover all public toilets within a specific area, catchment or district. OSET CAC1 Controlled activity conditions for Papakāinga Housing Developments (c) (d) (e) (f) (g) The discharge is from up to 10 dwellings for Papakāinga housing development and associated community facilities. There is an average of at least 2000 m 2 of land per dwelling or associated community facility. Each associated community facility shall discharge no more than two (2) cubic metres per day. Where the discharge is from a septic tank, it must comply with the standards in OSET PAC 1, 4 and 5. Where the discharge is from an aerated wastewater treatment system, it must comply with the standards in OSET PAC 1, 4 and 6. The design shall be supported by an assessment prepared by an OSET Suitably Qualified and Experienced Person, in general accordance with NZS 1547:2012 and include a completed On-site Wastewater Disposal Site and Soil Evaluation Checklist. The applicant demonstrates that the system is appropriate when making more connections to a single tank or discharge from multiple tanks to a single BAY OF PLENTY REGIONAL COUNCIL TOI MOANA 32

33 On-Site Effluent Treatment Draft 24 July 2018 (h) application field, and ensures that all connectors remain aware of the ongoing need for tank and field maintenance and the health of the system. The Papakāinga housing development is undertaken in accordance OSET P18(c). OSET MOC Controlled activities - Matters of Control Where a discharge is a controlled activity, Bay of Plenty Regional Council reserves its control over the following matters: 1 The discharge volume and means of compliance with the limitation of discharge volume. 2 The size and location of the land application area and reserve area. 3 The location of the system in relation to property boundaries, buildings, and parking areas. 4 The risk management system to be put in place, including whether there is a single entity remaining responsible for the ongoing maintenance of the shared system. OSET MRD Restricted Discretion activities - Matters of Restricted Discretion Where a discharge is a Restricted Discretionary activity, Bay of Plenty Regional Council retains discretion over: 1 Duration of the resource consent. 2 Measures to avoid, remedy or mitigate adverse effects on the environment. 3 Measures to avoid risk to human health. 4 The operation and maintenance of the on-site effluent treatment system, including to comply with the manufacturer s instructions. 5 For new discharges, the design of the system. 6 Location of the discharge in relation to surface waterbodies and coastal waters, to avoid, minimize or mitigate adverse effects on water quality. 7 Location of the discharge to avoid adverse effects on groundwater, and groundwater bores particularly drinking water supply bores. 8 Unless alternative mitigation options are proposed, the provision of reserve areas to provide for: A replacement land application area. The future installation of an on-site effluent treatment system should a greywater system, composting toilet or alternative toilet system need to be replaced. 9 In relation to a composting toilet, the management of any liquids (including diverted urine and leachate) from the composting toilet. 10 In relation to renewal of resource consents for existing on-site effluent treatment systems outside the catchments of the Rotorua Lakes, the achievement of environmental and public health outcomes. BAY OF PLENTY REGIONAL COUNCIL TOI MOANA 33

34 On-Site Effluent Treatment Draft 24 July 2018 Schedule OSET One Wastewater Design Flow Calculations Dwellings The primary source of information for design flows is contained in AS/NZS1547:2012 Appendix H. This information is intended to supplement Appendix H. Number of Bedrooms (Notes 1, 2 and 3) Occupancy For Design Purposes Bunkrooms A bedroom is a room used for sleeping. It includes those rooms which are designated as an office, study, sewing or work rooms which have a dimension greater than 2.0m and have the potential with different furnishings to be used as bedrooms. Lobbies or alcoves are not to be considered bedrooms. A space with an opening to an adjoining room wider than 1.2 metres shall not be considered as a bedroom. A room without a window shall not be considered a bedroom. Where a drawing of the bed locations is provided the actual number of bed spaces will be used to calculate design occupancy. Where no drawing has been provided, occupancy shall be calculated on the basis of 1 person per 10 m 2 of floor space. Hotels, Motels and Rental Holiday Homes Guests Maximum Occupancy/number of beds Flows provided in Table H4 Staff Maximum number of staff Flows provided in Table H4 Marae Design occupancy should allow for a seasonal peak, not just the average daily flow. Holiday homes tend to have intermittent occupancy but when occupied are likely to have a higher occupancy than a continuously occupied dwelling. An allowance in design occupancy should be made for the seasonally higher flows. Source L/person/day Overnight guests 130 Daytime visitors 70 BAY OF PLENTY REGIONAL COUNCIL TOI MOANA 34

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