Information from Alpha Series Development Resource Consent Application: GeoSolve Geotechnical Report. The Report highlights: Soils in the Alpha Series development area are generally unsuitable for high volume soakage disposal. A modest sized detention pond with permeable bed should be sufficient to dispose of the roof and hard surface sotrmwater from the subdivision. A formed overlow will be able to convey any excess flows toward Bullock Creek withou any threat to existing properties.
Information from Alpha Series Development Resource Consent Application: Paterson Pitts Infrastructure Report Extract Pages 3, 9,12. "There is no other existing stormwater infrastructure at the bottom of the proposed development that can be connected into therefore all primary SW flow from the proposed roads and lots will be discharged to ground soakage onsite which is now the Council's preferred method for SW disposal. Secondary flows will be attenuated to predevelopment levels so that the volume of water leaving the site is no greater than it is at present."
Letter to Quinn McIntyre & Erin Stagg re environmental concerns about Alpha Series development. Maggie Lawton (dec) was a Senior Science Researcher with Landcare NZ then an elected ORC councillor.
Assessment of Effects on the Environment - Report Extract Section 3.10 "All primary SW flow from the proposed roads and lots will be discharged to ground soakage onsite which is now Council's preferred method for SW disposal. Secondary flows will be attenuated to pre-development levels so that the volume of SW leaving the site is no greater that is at present." Riley Consultants Report referenced.
Information from Alpha Series Development Resource Consent Application: Riley Consultants SW Assessment Report Important to note predicted SW flows for 1 in 20 and 1 in 100 yr storm events.
Roger Gardiner corresponds with Wanaka QLDC councillor, Lyal Cox regarding potential stormwater pollution of Bullock Creek as a result of Willowridge Alpha Series development and major earthworks.
ORC notification of SW plans for Alpha Series Development. QLDC planner requests an external report with regards to SW. Refers also to a site visit by ORC where 2 free flowing springs were discovered and "I believe it is also proposed to discharge these into the development's SW system."
Information from Alpha Series Development Resource Consent Application: Ryder Consultants Peer Review SW Treatment & disposal. Review commissioned by QLDC to specifically review the Riley Report prepared for the Developer. The focus of the review is largely focussed on contaminates from SW into Bullock Creek and monitoring. Of specific note is the observation that "Dry Pond systems are not generally recommended in areas of with high water tables. ..The Riley Report describes this area as having potential for a high water table". "I expect the proposed design to achieve only limited treatment capability under flood flow conditions." "I also recommend that the "dead" storage area of the pond be carefully designed and maintained such that wetland plants are able to thrive through the year..Regular maintenance may be necessary. "
QLDC grants Orchard Rd Holdings Ltd consent for earthworks for the development of 40 residential lots. Conditions of the grant for a period of 3 years. "Periodic monitoring of SW soakage devices and remediation if found to be ineffective. Annual reports to Monitoring Team.. Remediation of any issues that are found to lead to water quality decreasing from its pre-development state or installation of a new SW management system to ensure water quality does not decrease from pre-development state.
Florence Micoud requests response from QLDC about SW concerns and protection of Bullock Creek. Erin Stagg QLDC confirms RC150804 has been granted and refers to a 1 in 100 year event being the only time SW would enter Bullock Creek.
Wetlands and Bullock Creek flooded by uncontrolled stormwater released from Alpha Series development.
Information from Alpha Series Development Resource Consent Application: Riley Consulting Report: Stormwater Operation & Maintenance Report for Meadowstone Alpha Series. The Report clearly sets out a range of activities and checks required on the Stormwater system and Retention Pond on a monthly and annual basis.
Wetlands and Bullock Creek flooded by uncontrolled stormwater released from Alpha Series development.
Wetlands and Bullock Creek flooded by uncontrolled stormwater released from Alpha Series development.
QLDC Engineering Review & Acceptance : SW & Wastewater O & M Manuals. 31 July 2017 SW Disposal Design SW Operation & Maintenance Report
Wetlands & Bullock Creek flooded by Alpha Series Retention System Failure.
Tom Grandiek to Allan Dippie (Dev) & PPG about SW disposal system failures. Key issues in dispute: QLDC says 1:100 year event. PPG says 1:20 year event. Rainfall in Feb was a 1:60 year event. Triton Arches not yet operational.
Wetlands Flooded by Retention System Failure. Wetlands and Bullock Creek flooded by uncontrolled stormwater released from Alpha Series.
Correspondence between Developer contractors Paterson Pitts from 5 July to 29 Aug 2018. QLDC: "F&G are obviously not happy that the SW from the site is designed to overflow onto their land." PP "However given the subsequent development of the F&G property and the community asset of the new walkway track and natural springs, Orchard Road Holdings Ltd are prepared to consider entering into a voluntary agreement with both QLDC and F&G with regard to installing a low flow pipe similar to that shown on the attached plan to bypass the springs and effectively transport these pre development flows past the F&G property thru a 300mm PE pipeline to Stone St."
Otago Fish and Game Council Meeting. ...Get tough on developers who breach consent and cause runoff into waterways, announcing it will consider prosecuting developers if other authorities will not...
QLDC Internal correspondence between Planners and RM Management Engineer. 23 - 28 Nov 2016 " A few alarm bells have gone off talking to PPG regarding the SW design of the Alpha site .." In discussion with Lyn and Erin, it appears as though Alpha have changed their permanent SW plan from what we consented: * much larger catchment (10ha) not being directed to the Triton system but rather going straight into the wetland. * wetland design has changed including removal of plants required by the peer review ecologist to filter contaminants. As a result SW will now leave the site during storm events whereas we were of the understanding that no water would leave until we received a 1 in 100yr ARI event. That is what was consented." Also discussion about maintenance of the SW system.
FOBC Presentation in QLDC Chambers to Mayor Boult and Executive Team. FOBC minutes of the meeting.
Meeting Minutes from FOBC Presentation in QLDC Chambers to Mayor Boult and Executive Team. FOBC minutes of the meeting. QLDC Jim Boult, Mayor Tony Avery - GM Planning & Development Ulrich Glasner -Chief Engineer David Wallace - Resource Management Engineering, Subdivision & Development Contributions Manager Simon Mason -Acting Maintenance & Operations Manager Anthony Hall - Acting Regulatory Manager FOBC: Roger Gardiner, Andrew Waterworth F&G Otago: Ray Grubb, Paul van Klink
27 May 2019 Wetlands and Bullock Creek flooded by Alpha Series Retention System Failure.
30 May 2019 Major flooding event. Wetlands & Bullock Creek flooded by Alpha Series Retention System Failure. 200mm deep in places
Peer Review for Simon Mason. Conclusion: The soakage system appears to have significantly lower soakage rate & less storage than the design intended. "the post development volume discharged from the site to Bullock Creek would be greater than pre-development, if the soakage performance was not improved.
Alpha Series Development Retention System Failure
Media Release: QLDC proposed new stormwater catchment solution and wetland area in Wanaka is in positive discussions with OFG. QLDC Chief Engineer Ulrich Glasner "The concept will aim to deliver clear water into the lake whilst continuing to retain sediment and protect pre-development flows into Bullock Creek." Ian Hadland, Chief Executive OFG : "The discussions are at a very early stage and there won't any agreement for use of Fish & Game land until thee is certainty that what is proposed will protect Bullock Creek and the community from the discharge of sediment and nutrients contained in stormwater flows."
Minutes from QLDC FOBC Meeting on 18 Apr.
Alpha Series Development Retention System Failure. Water flooding onto Wetlands and into Bullock Creek.
QLDC granted RM200754 (RC) on the 3rd of November 2020 to Willowridge Development Ltd for further residential subdivision with associated earthworks without any regard to Willowridge's failure to correctly install and maintain stormwater systems from previous Alpha Series developments.
7 July 2021 Alpha Series Development Retention System failure. Flooding of Wetlands and Bullock Creek.
Simon Mason QLDC response to Roger Gardiner FOBC, Paul van Klink OFG. SM: "Performance of installed system - the soakage ates within the Triton Archers have not achieved those nticipated at the time of design. ....The developer will not receive sign off on the current development stages until the agreed solution has been implemented." "Stone St SW Upgrade - QLDC are progressing a SW upgrade project which will collect and reticulate the discharge from the Alpha SW system to Lake Wanaka. The objective of this project is to protect Bullock Creek from urbanised run off, address flooding issues on upper stone street, and mitigate agains downstream flooding risks."
12 Aug 2021 Alpha Series Development Retention System failure. Flooding of Wetlands and Bullock Creek.
17 Aug 2021 Wetlands & Bullock Creek flooded by Alpha Series Retention System Failure.
2 Dec 2021 Wetlands & Bullock Creek flooded by Alpha Series Retention System Failure.
4 Feb 2022 Wetlands & Bullock Creek flooded by Alpha Series Retention System Failure.
19 Feb 2022 Wetlands & Bullock Creek flooded by Alpha Series Retention System Failure.
11 Jun 2022 Alpha Series Development Retention System failure. Flooding of Wetlands and Bullock Creek.
19 July 2022 Alpha Series Development Retention System failure. Flooding of Wetlands and Bullock Creek.
Change by Developer in SW Disposal Design parameters from 2016 to 2022 without updating the AEE RM180980 Peak flows limited to 1 in 100 yr storm RM Peak flows NOW 1 in 20 yr flood. Bullock Creek will continue to serve as the overland flow path for the Alpha Series detention basin for events above 1in20 year event.
Meeting on site with QLDC Simon Brackstone and Nancy Latham, FOBC. Discussions regarding the SW Pipe proposal and its likely success. Emphasis that this new proposal is a mitigating project rather than a prevention project as claimed in the RC Application.
ORC issues QLDC with an Abatement Notice #EN.RMA.22.0067 as a result of Stormwater Flooding in 2022.
Internal QLDC correspondence re concerns about SW of Alpha Series development. Rob Darby - "Regardless of professional opinion, we should have serious concerns over the long term performace of SW soakage facilities. If the design is reliant on maintaining soakage rates, then maintenance of the soakage facilities is paramount and becomes Councils long term concern and cost on vesting of the assets."
24 Aug 2022 Alpha Series Development Retention System failure. Flooding of Wetlands and Bullock Creek.
ORC Infringement Notice to QLDC #EN.RMA.22.0068
FOBC et al submission to the public meeting of the inaugural 2022 Wanaka and Upper Clutha Community Board. This submission summaries the very serious concerns held around stormwater management by QLDC in the Roy’s Bay Catchment at that time. This was the first collective submission by our Community Stakeholders Group, although individually our stakeholders had raised concerns with QLDC on numerous occasions before this. FOBC et al comprises, Friends of Bullock Creek, Guardians of Lake Wanaka, Wanaka Lake Swimmers, Touchstone and Upper Clutha A&P Society.
https://fobcwanaka.sharepoint.com/:b:/s/FriendsofBullockCreekIncorporated/Ed5lvppATA1PizzKk0dkwI8BrEuTyEf6j-peBhQb0UlBGw?e=60gOG2 16th January 2023 Urgent Action Required and seeking an urgent response from you with clarification as to; why QLDC granted RM200754 (RC) on the 3rd of November 2020 to Willowridge Development Ltd for further residential subdivision with associated earthworks.
FOBC to QLDC : Catchment stormwater run-off pollution – Roy’s Bay Lake Wanaka expressing that the cumulative impact of stormwater contamination from additional urban development areas being plugged into the stormwater infrastructure which was granted for the original Resource Consent (RM 150804) is a major concern.
ORC Infringement Notice to QLDC #EN.RMA.23.0055
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