Hikurangi Swamp Working Group Meeting 25/9/14 Topic/Owner Information - - PowerPoint PPT Presentation

Hikurangi Swamp Working Group Meeting 25/9/14

Topic/Owner Information 1 Last Meeting and Apologies Minutes 2 Terms of Reference & Code of Conduct Representative positions & distribution list 3 Operations/Maintenance 1. Monthly Overview from Hydrotech 2. Pump Availability 3. Pump Rewind 4. Power Usage 5. Pump Operation 6. Te Mata Pump Blockage & Screen Clips 7. Otonga Main Switch 8. Okarika Tomo 9. Spillways 4 Finances Hydrotech Report Review 5 14-15 Drain Clearing Drain Clearing Proposal 6 Buildings Maintenance Building Condition 7 2014/15 Capex Stopbank Adjustments 8 Station Access Training and Trouble Shooting Guide 9 Berm Land Grazing Licences 10 Resources Resources 11 Term of Reference Short Term Objectives 12 AOB

Terms of Reference

Area of Representation Rep Name Junction Pocket Primary Deputy Te Mata Pocket Primary Evan Smeath Deputy Otonga Pocket Primary Phillip Hindrup Deputy Ray Hindrup Mountain Pocket Primary Rosemary Rowan Lister Deputy Donald Gillett Tanekaha Pocket Primary Andrew Ilich Deputy Jack Ilich Ngararatunua Pocket Primary Ken Finlayson Deputy Glen Martin Okarika Pocket Primary Geoff Crawford Deputy Robert Olsen Whakapara Catchment Primary Simon Donelley Deputy Waiotu Catchment Primary Luke Beehre Deputy Alan Moscript iwi/hapu Primary Hona Edwards Deputy Fonterra Primary Tim Brandenburg Deputy Murray Van Der Maas Northland Regional Council Primary Tess Dacre Deputy Bruce Howse

Operations and Maintenance – Overview of HydroTech’s August Report

• Some time was spent clearing all the

wood and debris from the pumping station, burning it where dry enough to allow

• Two storms came through, a small one in

the middle of the month and a larger one at the end of the month which resulted in a small volume, short duration

• vertopping event

Operations/Maintenance - Pump Availability

Station

~1.1 m3/s Pumps ~ 4.1 m3/s Pumps

Station Capacity (m3/s) A B C D E Otonga Flygt (17%) Flygt (17%) Pleuger (65%) 6.3 Te Mata Pleuger (17%) Flygt (17%) KSB (65%) 6.3 Mountain Pleuger (50%) KSB (50%) 2.2 Tanekaha McKewen (50%) Pleuger (50%) 2.2 Junction Pleuger (100%) 1.1 Ngararatunua Pleuger (11%) Pleuger (11%) Pleuger (39%) Pleuger (39%) 10.4 Okarika Pleuger (10%) Pleuger (10%) Pleuger (10%) Pleuger (35%) Pleuger (35%) 11.5

Operations/Maintenance - Pump Re-wind Update

• Goal is to have all

stations operational and hold 1 spare small and

• ne spare 240HP

Pleuger.

• 2 Small Pleuger rewinds

– both pumps have been delivered to WWTP (internal storage) on Tuesday 16th September.

Operations/Maintenance - Pump Re-wind Update

• 3rd small Pleuger is with SAAW – on internal

investigation one of the internal slots has blown, if can be repaired then will be re-wired 6-8 weeks.

• Spare 240 HP Pleuger repair– this is completed,

stored safely at SAAW’s depot. Claim still with insurer.

• Spare 240 HP Pleuger Prop – Sourcing of a

replacement prop is being undertaken, likely have to cast a new one from one of originals on a pump.

Operations/Maintenance - Power Usage

HydroTech August Report Review – Pump Hours Run

Pump Pocket

Junction Te Mata Tanekaha Mountain Otonga Ngararatunua Okarika

A 44 87 35 32 146 84 57 B 141 28 153 42 C D 22 106 39 53 E 48 50

All pumps were available at month end, apart from pump C at Okarika and pump B at Ngararatunua. The distribution of pump hours indicates that it was the pumps with the lower set-point that were operating more and keeping on top of the flows

Te Mata Pump Blockage

Screen Clips – HydroTech installing

Otonga Main Switch

Okarika Tomo

Okarika Tomo

Okarika Tomo

Okarika Tomo

Spillways maintenance

• HydroTech have been instructed to undertake

the mowing of the spillways, approx. cost $1000 every 6 weeks

HydroTech August Report Review - Finances

Inspection Maintenance Environmental Flood Attendance Drain Clearing

$2,638.22 $1,264.25 $519.46 $2,631.89

• Maintenance –Tire blockage on Pump D at Te Mata (lifting and

clearing) Environmental – Confirm probe heights to ensure pumps not cycling Flood Attendance – 19 separate invoice lines detailing the individual visits

14-15 Drain Clearing Proposal

• The drain clearing requests have been

received.

Building’s Maintenance

Building’s Maintenance

Buildings Maintenance

Material Cost Labour Bird- proofing Door & Frame Work Interior Wall Wash & Paint Conden

• sation

Issue Water tank & pipework removal Duration (days) Mileage Total Cost Junction $125 $50 $90 $20 $25 2.5 250 $1,560 Te Mata $125 $50 $90 $20 1.5 150 $1,035 Otonga $125 $90 $25 2 200 $1,240 Tanekaha $125 $50 $90 $20 $25 2 200 $1,310 Mountain $125 $50 $90 $20 2.5 250 $1,535 Ngararatunua $125 $90 $25 2 200 $1,240 Okarika $125 $90 $20 $25 2 200 $1,260 Rates $50/hr $100/d $9,180

2014/15 Capex - Stopbank Adjustments

• Clement Contractors were the lowest conforming tender received. ( Only 2

tenders received on this project)

• Clements final tendered price of $263,695.21 was accepted.
• Recommendation for Contract award sent to Council 5th September.
• Recommendation for Contract award returned Signed 9th September.
• Award letter sent to Clements Contractors the successful tendered

contractor 15th September

• PO still to be signed at Chief Executive Officials level (Mark Simpson)
• Start date to be confirmed but cannot start before 1st October due to

consent conditions, the area is still too wet so programme is envisaged to start early November.

Access to stations?

• Change in H&S legislation
• Demonstrate competency / training for all

those who operate council assets

Access to stations?

Pump Station not working as expected (spillways not spilling and water level in pocket high) Have you been trained and deemed competent? Yes No Follow Guide (next slide) Station Operational? Station Operational HydroTech arranged to be in attendance Call HydroTech/Council Yes No

Access to stations?

Trouble Shooting Guide (To be used if spillways not spilling, water level in pocket high and station not operating) 1. Are screens relatively clear of weeds (level sensors within chamber behind screen)?

• 2. Check inside pump station;
• Check power is available on all three phases via the Voltmeter and rotary switch on the main switch board
• If power is available on all three phases check that the pump Auto/Off/Manuel switch is in the Auto

position .

• If the pump is in the Auto position but not running turn the switch to the Off position and press the reset

button and then turn the switch back to the Auto position .

• There is a time delay on each pump – so wait for a 10 to 15 minutes for the timer to time out .
• If the pump restarts- check the intake screens on the catchment side of the station . If there are weeds

against it this is generally the reason for the pump tripping out – Turn off the pump and clear the weeds with the weed rake or call Greg to bring in the small digger with the weed bucket .

• If the pump won’t restart call Greg as there could be a blown fuse or a more serious electrical issue –

Don’t open panels as there is an electrical hazard present and risk of electrocution or electrical flashover and explosion .

• For assistance Call Greg Palmer 021730349 or Andrew Barclay 021730318 or WDC Callcentre 094304200

Access to stations?

Options;

• 1. Lock-down - HydroTech personnel only
• 2. Partial lock-down – Harder to access stations
• 3. No lock-down – Train all

Grazing Licences

• The following Licencees do not have current

licences their Hikurangi Swamp Grazing licences: Expiry 2014

Long Term Plan

Resources

• WDC staff resources stretched during major events incidents

when scheme beneficiaries are seeking greater input from staff.

• In non event situations the time spent on scheme issues by

WDC staff has increased. This has included level and detail of information being requested, involvement in wider scheme issues (including consenting, fisheries, land management), requests for meetings, correspondence and site visits, etc.

• To continue to provide this level of involvement additional

resource are needed. This would come at cost to scheme.

• Proposal to group – Employ dedicated Hikurangi Scheme staff

(full or part time)?

Short Term Objectives (Page 1 of 2)

• To meet the terms of the resource consent ($350k for

stop bank levelling) – Ongoing, due for completion this summer

• Survey the berm land to understand the height variation/

restrictions down through the swamp – quote obtained, see next slide

• Address the issue with the large trees/ significant

undergrowth in the berm land to the immediate SW of Otonga PS – quote obtained, see next slide

• Assess the restrictive influence of the old road formation

below the Jordan Valley Bridge – quote obtained, see next slide

• Assess the condition and understand the possibility of

clearing restrictions on the Wairua River downstream of the Matarua Bridge – completed, see subsequent slides

Wairua River Downstream of Swamp

• On 23rd September, Ray &

NRC undertake a walk over survey of the river below Pipiwai Road to the 6m waterfalls

Wairua River Downstream of Swamp

• The likely cost of addressing these issues

would outweigh the drainage benefits that would be gained

• No works are planned regarding these

particular issues

Short Term Objectives (Page 2 of 2)

• Assess the channel profile (presently pools and

riffles) between the Jordan valley Bridge and Matarau Bridge in the Wairua River

• Consider the possibility of trading off ox-bow within

the berm land with ox-bows on private land on the pocket-side of the stopbanks to aid smooth flow through the scheme whilst maintaining the environmental balance.

• Lock down the date at which the scheme becomes

debt free

• Investigate external sources of funding for

environmental improvements within the pockets

AOB