Lake Tarawera Needs Help!

Lake Tarawera Sewerage Update Community Committee convened in 2015 Tarawera Sewerage Steering Committee TSSC Identified Issues – Water Quality, Public health and the requirement for OSET Reticulate back to Lake Okareka then to Rotorua or Local Treatment Plant Undertake CIA Cultural Impact Assessment

Lake Tarawera Sewerage From the CIA report the committee received the four guiding principles of; The best option that halts the decline in lake water quality Te Mauri o te Wai 2 Enables the return of Iwi and best use of Maori land 3 The option that has least impact on the sites of significance 4 The management of waste and the respect for one another Tekanga

Lake Tarawera Sewerage Existing Systems 391 OSET systems, 11 Resource Consents. 9 AWTS systems, 382 septic tanks (97%). 177 soak hole systems (45%), 75 trench systems (19%). Where septic tank size known, 276 were less than the recommended minimum size of 3,000 litres (80%). Soil Type – Rotomahana mud Property Size – urban scale, 70% less than 1500m2.

Lake Tarawera Sewerage A range of environmental constraints have been identified by BoPRC which limit effective and sustainable on-site wastewater management at Tarawera: Existing systems Soil type Property size Proximity to groundwater Land slope

Lake Tarawera Sewerage Effective and sustainable on-site wastewater management severely constrained. On-site disposal is contributing to the nutrient and pathogen loads. The majority of Tarawera properties (95%) do not meet current standards.

Lake Tarawera Sewerage On-site systems are not likely a valid option for 43% of the community and a further 56% face significant upgrades. Given the evidence of the impacts of OSET discharges and the upgrades required, it is considered important that the settlement is reticulated.

Lake Tarawera Sewerage

Lake Tarawera Sewerage Options Reticulate the community with LPGP and treat at a local treatment MBR plant Reticulate the community with STEPS and treat at a local treatment MBR plant Reticulate the community with LPGP and treat connected to the Rotorua Plant via the Okareka connections (2)

Lake Tarawera Sewerage Options Reticulate the community with STEPS and treat connected to the Rotorua Plant via the Okareka connections (2) Do nothing and proceed the implementation of OSET

Lake Tarawera Sewerage Funds secured Government Freshwater fund $6.5m RLC subsidy $.75m BOPRC Grant $.75m Total fixed subsidy $8.0m Fixed Lump Sum Payments RLC RLC - No payment thru rates

Lake Tarawera Sewerage   Option Description Collection, reticulation and transfer main ($M) Cost, contribution to existing trunk main TWWTP Total capital cost estimate July 2018 LPGP system connected to Okareka scheme via Tarawera Road $19.8 $2.7 $22.5 LPGP system connected to Okareka scheme via Playnes farm $17.6 $20.3 STEP system connected to Okareka scheme via Tarawera Road $22.8 $25.5 STEP system connected to Okareka scheme via Playnes farm $20.5 $23.2

Indicative Capital Cost Estimate (+30%)   Option Description Collection, reticulation and transfer main ($M) WWTP and LDS cost Total capital cost estimate LPGP system connected to a local WWTP and LDS $17.6 $11.12 $28.72 STEP system connected to a local WWTP and LD $20.5 $31.62 Notes: Estimates based on 450 existing HUE and 550 future HUE. Unit prices were based on contract prices for Rotomā/Rotoiti sewerage scheme) Payne's farm route option cost does not include legal cost, easement fees and fees to the owner/s for land acquisition. This includes a limited road access development allowance.

Lake Tarawera Sewerage

WWTP and LDS Indicative Cost Estimate Breakdown Particulars Cost ($M) Geotechnical investigation to establish site suitability $0.50 Survey, negotiation and legal advice re. agreement for site easement or acquisition Resource consent cost for WWTP and LDS (consultation, application hearing) $1.00 Treatment Plant and LDS construction, including all associated equipment $7.31 Roads, access and utilities (power and water supply) $0.80 Design and construction supervision (10%) $1.01   $11.12 Notes: Estimate based on Rotomā/Rotoiti contract prices and costs

Lake Tarawera Sewerage Playnes Farm Trunk Main Additional Costs Not Included In Budget $2.2m Need To Add Legal costs Geotechnical Access agreement Access road Annual lease charges Unknown alignment Stability unknown

Lake Tarawera Sewerage OPTION TOTAL UNSUBSIDISED TOTAL SUBSIDY COST TO BE FUNDED Cost/HVE   COST BY COMMUNITY 550 750 Million LPG Via Tarawera $ 22,500,000 $ 8,000,000 $ 14,500,000 $ 26,364 GST excl $ 19,333 36% $ 30,318 GST incl $ 22,233 LPG via Playnes $ 20,300,000 $ 12,300,000 $ 16,400 $ 18,860 39% $ 25,718 $ 25,712 STEP via Tarawera $ 25,500,000 $ 17,500,000 $ 31,818 $ 23,332 31% $ 36,591 $ 26,833 STEP via Playnes $ 23,200,000 $ 15,200,000 $ 27,636 $ 20,267 34% $ 31,782 $ 23,306 LPGP to LOCAL NWTP $ 28,720,000 $ 20,720,000 $ 37,673 $ 27,626 28% $ 43,324 $ 31,772 STEP to LOCAL $ 31,620,000 $ 23,620,000 $ 42,945 $ 31,493 25% $ 49,387 $ 36,217 Total Subsidy = MFE $ 6,500,000 RLC $ 750,000 BOPRC $ 8,000,000

Lake Tarawera Sewerage OPTION Cost/HVE   550 750 LPG Via Tarawera $ 30,318 GST incl $ 22,233 LPG via Playnes $ 25,718 $ 18,860 STEP via Tarawera $ 36,591 $ 26,833 STEP via Playnes $ 31,782 $ 23,306 LPGP to LOCAL NWTP $ 43,324 $ 31,772 STEP to LOCAL $ 49,387 $ 36,217

Lake Tarawera Sewerage

Lake Tarawera Sewerage Consideration Of On Site Options - STEPS More culturally acceptable Tank large size – 4 cubic meters 4000litres Ground stability compromised Rotomahana Mud Section sizes Terrain to Steep Ground water limiting depth More cost

Lake Tarawera Sewerage

Lake Tarawera Sewerage Consideration Of On Site Options – LPGP Not so Culturally acceptable Smaller footprint Cheaper cost Better ground security – less disturbance Already in use at Okareka Easier access machinery Only 1000litres Community acceptable

Lake Tarawera Sewerage Consideration Of Disposal – Local Treatment Plant Culturally more acceptable Does not remove effluent out of the catchment Cost is prohibitive – Nearly twice Would require local Mtc contract to operate Requires a Local Site and Disposal Area Requires Resource Consent Add considerable time to project 2 to 3 years

Lake Tarawera Sewerage Consideration of Pipeline Route – Playnes Farm Culturally less preferred - Significant Sites Cost Difference $2.2M Less Expensive BUT Many Costs not Included Costs of Legal and Access agreements unknown Cost of Infrastructure not Known – Roading Geotech investigation and Cost Unknown Access Agreement or Lease of land Unknown

Lake Tarawera Sewerage Consideration of Pipeline Route – Tarawera Rd Culturally acceptable - Road already there Owned by Council Known alignment Easier to work for machinery Better long term security No cost of access or land agreements

Lake Tarawera Sewerage The TSSC has completed its task and makes the final recommendation to be taken to Iwi and Ratepayers Meeting 20th October A Project Steering Committee has been established to monitor the project and liaise with the Community. Committee to comprise of two Ratepayers Reps, one Iwi Rep and One Maori Land Owner Rep with an Independent Chair A Cultural Committee has been established to assist the Council with the CIA issues

Lake Tarawera Sewerage Tasks of the Project Steering Committee Get MORE money to offset some costs Look at options for payment over time-Banks Loans etc Make sure you are communicated with Ensure the project runs on time Hear your concerns and action them

Lake Tarawera Sewerage The TSSC is recommending unanimously to both Tarawera Ratepayers, to Iwi and Maori land owners Resolution That the Tarawera Wastewater system consist of onsite LPGP systems for each property and that the system trunk main connect to the Lake Okareka system via Tarawera Rd

The Future of Lake Tarawera

Lake Tarawera Sewerage And make Lake Tarawera great again

Lake Tarawera Sewerage The TSSC is recommending to both Tarawera Ratepayers, to Iwi and Maori land owners Resolution That the Tarawera Wastewater system consist of onsite LPGP systems for each property and that the system trunk main connect to the Lake Okareka system via Tarawera Rd Call for a show of support