waterview connection project (ca3466)remediation) (sectors 1,3,5,6,7,8 and 9). land disturbance...

Waterview Connection Project (CA3466):

Auckland Council Monthly Environmental Report Report 13 – Period March 2013

Document 025-RPT-01940

28 April 2013

March 2013 Environmental Report

AC Monthly Report Mar 2013.docx Page 1 28 April 2013

1. Introduction

To meet reporting requirements for the Waterview Connection, a monthly report will be prepared and

sent to AC in the 2nd week of the following month.

This report sets out the reporting requirements for the Waterview Connection for the period March 2013.

2. Resource Consents

Consents triggered by the works to date:

Consent Description Trigger

Southern Area Enabling Works

EPA 10/2.008 (ACC:

Plan Modification

202)

For new designation, SH20, southern tunnel portal to

Maioro Street Interchange – NOR7.

Works within the designation.

EPA 10/2.010

(ARC: 38313)

Land use consents – Land disturbance (Sectors 1-9

inclusive).

Earthworks and roading/tracking/

trenching during construction. Land

disturbance activities.

EPA 10/2.021

(ARC 36474)

Discharge of contaminants to land or water from

contaminated land (that is undergoing disturbance or

remediation) (Sectors 1,3,5,6,7,8 and 9).

Land disturbance activities within areas

potentially containing contaminated

material.

EPA 10/2.025

(ARC: 38329)

Discharge to air – Roadworks. Discharge to air

associated with roadworks (including dust emission).

General activities associated with the

road construction.

Southern Area Main Works

EPA 10/2.008 (ACC:

Plan Modification

202)

For new designation, SH20, southern tunnel portal to

Maioro Street Interchange – NOR7.


EPA 10/2.010

(ARC: 38313)

Land use consents – Land disturbance (Sectors 1-9

inclusive)

Earthworks and roading/tracking/trenching during

construction.

Land disturbance activities.

EPA 10/2.001

(ARC: 38316)

Use, Erection or Placement of New Structures (Sector

9). For a stormwater pipe underneath Oakley Creek as

a permanent stream.

Construction of the Hendon Park

Culvert.

EPA 10/2.012

(ARC: 38317)


9). For bridges constructed over Oakley Creek –

includes Hendon Park Bridge and cycleway bridges.

Construction of Oakley Creek Bridge,

Hendon Pedestrian Bridge and cycle and

pedestrian bridges.

EPA 10/2.014

(ARC: 38319)


9).

Stormwater outfall structures for Oakley Creek.

Diversion and relocation of existing

stormwater outfalls.




EPA 10/2.016

(ARC:38321)

Disturbance of bed of lakes and rivers (Sector 9).

Excavation, drilling or tunnelling or other disturbance

for the purpose of diverting a permanent river or

stream to a new course.

Diversion of three sections of the Oakley

Creek.

EPA 10/2.017

(ARC: 38322)

Discharge to the water table of a road (Sectors 1-9).

Diversion and discharge of stormwater from

impermeable areas into the water table of a road.

Discharges from the sealed carriageway.

EPA10/2.018

(ARC: 38323)

Discharge to the water table of a road (Sectors 1-9).

Diversion and discharge of stormwater into any

watercourse for the purpose of draining roads.

EPA 10/2.019

(ARC 38324)

Stormwater discharge – Network Operator activities

within urban areas (Sectors 1, 3, 5, 6, 7, 9). Stormwater

discharge onto land or water.

Discharges to the permanent

stormwater system.

EPA 10/2.025

(ARC 38329)

Discharge to air – Roadworks

Discharge to air associated with roadworks (including

dust emission)


road construction.

EPA 10/2.027

(ARC: 38330)

Diversion of water other than open coastal water

(Sector 9).

Structures for diversion of water flows

of a floodplain and associated diversion

and deposition of material in Sector 9.

EPA 10/2.021

(ARC:36474)

Discharge of contaminants to land or water from

contaminated land (that is undergoing. disturbance or

remediation) (Sectors 1, 3, 5, 6, 7, 8 and 9).

Land disturbance activities within areas

potentially containing contaminated

material.

Northern Area Portal Works

EPA 10/2.005 For a new designation, SH16, SH20 and Great North underpass – NOR4. A new surface designation for construction, operation

and maintenance of new interchange and structures

associated with tunnel operation, including ventilation

building and stack, mitigation and local road access,

taking in new pieces of land, and allowing for

construction and operation of ramps, stormwater,

wetland ponds, ancillary safety and operational

services and maintenance, temporary works,

vegetation removal and restoration, relocation of

services, works on north-western cycleway,

landscaping and planting, open space restoration and

restoration of the Oakley Inlet heritage area.


EPA 10/2.010 (ARC: 38313)

Land Disturbance (Sectors 1 – 9). Earthworks and

roading / tracking/ trenching during construction -

within and outside the Sediment Control Protection

Area (includes the associated discharge of sediment

laden water as a discharge consent)

Earthworks and roading

/tracking/trenching during construction.

Land disturbance activities.

EPA 10/2.017 (ARC: 38322)

Discharge to the Water Table of a Road (Sectors 1 – 9).

Diversion and discharge of stormwater from

impermeable areas into the water table of a road.





EPA10/2.018 (ARC: 38323)

Discharge of Water from Roads (Sectors 1– 9).

Diversion and discharge of stormwater into any

watercourse for the purpose of draining roads.


EPA 10/2.019 (ARC 38324)

Stormwater Discharge - Network Operator Activities

within Urban Areas (Sectors 5, 7, 9). Stormwater

discharge onto land and water. This includes

discharges into Oakley Creek, Meola Stream & Pixie

Stream.

Discharges to the permanent

stormwater system.

EPA 10/2.025 (ARC 38329)

Discharge to Air – Roadworks. Taking precautionary

approach consent is sought for discharges to air

associated with roadworks (including dust emissions).


road construction.

Additional consents/approvals obtained for the project are as follows:

R/LUC/2011/4677

35 Valonia Street,

New Windsor

Land use consent for temporary carpark and

accessway, associated earthworks and tree

removal, and works within the dripline of

protected trees.

Construction of temporary and permanent

playing field outside designation requiring

resource consents in accordance with

Auckland City District Plan.

ARC: 39983

35 Valonia Street,

New Windsor

Landuse consent for earthworks. Earthworks for carpark and playing field

outside the designation requiring resource

consents in accordance with Auckland City

District Plan.

R/LUC/2012/991

Alan Wood Reserve

Removal and works within the dripline of

protected trees associated with the relocation of

a wastewater pipe (the Hendon Sewer) within

Alan Wood Reserve.

Works for the Watercare sewer relocation

located outside the designation requiring



R/LUC/2012/1879

6 Barrymore Road,

Owairaka

Land use consent for removal of eight protected

trees associated with the creation of pedestrian

and vehicular accesses within Barrymore Road

Reserve.

Access to CY11 from Barrymore Road

involving removal of trees outside the

designation requiring resource consents in

accordance with Auckland City District Plan.

R/LUC/2012/2168

142-160A Stoddard Rd,

Mount Roskill

Land use consent for the construction and use of

a new Project Site Office at Stoddard Rd,

including associated earthworks and parking.

Construction of project office requiring



R/LUC/2012/2568 Hendon Park

Installation of an above ground duct containing

power, water and telecommunication services

to provide services to Construction Yard 11

Works for the required above ground cable to

provide services to CY11 located outside the

designation requiring resource consents in

accordance with Auckland City District Plan.

R/TRC/2013/709 Richardson Rd Tree Removal

The removal of a generally protected tree

located within the road reserve of Richardson

Road associated with the shared pedestrian and

cycleway.

The removal of a generally protected tree

located within the road reserve of

Richardson Road and outside the Project

designation, requires Restricted

Discretionary Consent in accordance with

the Auckland City Isthmus District Plan.




R/LUC/2013/646 CY11 Carpark & Storage

CY11 Carpark Extension and Storage, including

associated earthworks

Located outside the Project designation the

proposal required Restricted controlled

consent for earthworks;Discretionary and

Restrricted discretionary consent for car

parking; and Discretionary consent for the

placement of containers under the Auckland

City Isthmus District Plan.

ARC: 41436 Stormwater CY11 Carpark & Storage

CY11 Carpark Extension – associated stormwater

diversion


proposal required Controlled activity consent

for the diversion and discharge of

stormwater (Rule 5.5.2) under the Auckland

Regional Plan: Air, Land and Water.

ARC: 41437 Earthworks CY11 Carpark & Storage

CY11 Carpark Extension – associated earthworks


proposal required Restricted discretionary

consent for earthworks under the Auckland

Regional Plan: Air, Land and Water.

3. Construction Works - March until June

The table below outlines the construction works carried out in March and an indicative programme which

shows the anticpated works in the coming 3 months until 31st June 2013.

South Work Package March April May June

Maioro St to Richardson Rd

Earthworks between Maioro St & Richardson Rd

Subgrade preparation & pavement installation - southbound alignment

Drainage installation

Bored piles at 903 retaining wall (adjacent to Christ the King School)

Construct cycleway (including earthworks)

Construct CTKS Noise wall

Service decomissioning on Richardson Rd diversion

Richardson Rd bridge services and finishing works

Construct soil nail walls at 903 retaining wall

Richardson Rd to Oakley Creek

Earthworks between Richardson Rd & Oakley Creek (incl haul road)

Construct Valonia Fields

Construct Oakley Creek bridge

Construct tunnel spoil building incl sheet piling, bored piling and conc works

Construct TP10 pond at rear of Richardson Rd tavern

Construct Oakley Creek pedestrian bridge No.3

Subgrade prep & pavements installation- southbound alignment

Construct soil nail walls at 903 retaining wall

Drainage Installation

Oakley Creek Bridge to cut

Branch 9 Hendon sewer realignment

Hendon sewer crossing of Oakley Creek



in Southern Approach Trench (SAT)

Stream realignment B

Construct haul roads from Oakley Creek to SAT

Hendon field converted to carpark and laydown area

SAT cut line to CY9

Construct Alan wood pond

Construct Alan wood pond outlet

Drill and blast basalt SAT

Bulk excavation of East Coast Bays material from SAT

Construct capping beams and drainage in SAT

Construct SAT Sump

Subgrade preparation & pavements in SAT

Construct TBM Launching platform

Fill landfill to the North West of the SAT Construct Yards CY9 & CY10 (incl laydown, crane platform, pond & buildings)

Hendon Swale (East of the SAT)

Construct Haul Roads outside the SAT

Drainage installation outside of the SAT

Construct segment yard platform in SAT

North Northern Apporach Trench (NAT) (& surrounds) to fill line

Diaphram Wall excavation incl loadout of material via stockpile area

Diaphram wall capping beams

Construct NAT bored pile walls

Construct NAT head wall

Construct NAT props

NAT Excavation Stage 1

Northern fill embankment & north of Oakley Creek inlet

Topsoil strip, service installation & sand blanket Northern embankment

Lay structural fill for northern fill embankment

Construct staging and access platforms, Ramps 1,3 & 4

Construct permanent piles, Ramps 1,3 & 4

Construct columns and cross heads in CMA, Ramps 1, 3 & 4

Construct staging and access platform Ramp 2

Tree clearance and site establishment north of Oakley Creek inlet

Construct permanent piles north of Oakley Creek inlet

Construct columns & crossheads north of Oakley Creek inlet, Ramps 1, 3 & 4

Great North Rd interchange

Site establishment (haul road & environmental controls) in Tear Drop area

Construct permanent piles in Tear Drop area

Construct columns & cross heads in Tear Drop area



4. Site Meetings and Inspections

Auckland Council’s Erosion and Sediment Control officer visited the Southern and Northern Area works

on the 7th, 14th, 21st and 28th of March.

5. Environmental Monitoring

5.1. Tree Management

Grant Sirl, Arborist – Arbor Advice Ltd (the Project Arborist) has provided the following report for the

amenity trees affected by the works;

Amenity Tree

Species Location Health Fencing Observations/recommended actions

South

522 Zelkova Within compound area adjacent north side of Richardson Rd

Good Good Protective fencing – steel pipe/mesh in good condition. No materials within exclusion zone around tree.

698 Group var native species

Alan Wood Reserve, access via Methuen Rd

Good/ fair Sound barrier wall appropriate protection

Remaining trees of group 698 appear in reasonably good health/condition.

Grove various species

Small Kowhai, Karamu etc

Located southwestern side of Alan Wood Reserve.

Good Good Only small shrubs/trees in line of overflow pipe have been removed. Protective barrier fencing has excluded remaining vegetation from immediate work area.

512, 513 to

516 and 519

groups

Titoki, Prunus, Totara, Tarata, Karaka & Cabbage

Near western end of Alan Wood Reserve adjacent basketball court. (outside designation).

Good/Fair - Southern

Totara tree in good

condition. Northern

tree in fair condition; damage to

south of crown

evident. Likely

exhaust fumes have

scorched foliage

Good - southern side of work site alignment. Good – Northern Side of work site alignment

Southern side protective fencing erected/sturdy and in good condition. Fencing excludes the vegetation from immediate work site area. Northern Totara tree rootplate area has been mulched. Protective fencing alignment has been repositioned to avoid conflict with canopy of northern Totara tree. Will undertake remedial work to northern Totara tree upon completion of drainage trench. Secure site fence excludes remaining trees/vegetation in Park area from construction zone

North

N/A Pohutukawa Waterview Primary School

Good Sound barrier wall erected eastern side of tree. (Tree within School grounds outside designation)

Minor remedial work required to eastern side crown structure that extends over alignment of south barrier wall, one small damaged & hanging branch. Rootplate area has been mulched.

NB: Excavation, concrete mowing strip and post holes for security fence within road berm under dripline of tree not by the WCA.



#698 & 811

Titoki (x2) Herdman Street – Street trees

Good/Fair Trees in designation area to be preserved where possible. Noise wall protects trees from construction

Titoki tree # 698 in poor health & removal recommended. Construction of the water main close to the tree will have further implications upon tree vitality/health.

#247 Pohutukawa Waterview Reserve

Fair Tree relocated to within Reserve

Tree under stress following relocation procedure. Advanced de-foliation occurring. Tree status has not varied a great deal since initial premature leaf defoliation but appears extent of leaf drop may have decreased.

#’s 272, 276, 300, 315, 330, 729, 730, 732

272-Totara 276-Robinia x6 300–Robinia 315–Robinia x4 330-Robinia x3 729-Robinia x3 730-Karaka 732-Karaka

Located within Star Mill archaeological area

Good/Fair Trees within archaeological area that has been fenced off from adjacent construction zone.

Grass/weeds have been mown/removed. Regular maintenance required.

A protective barrier fence needs to be erected in gully area to replace the original chainlink fence to exclude the subject trees from the construction zone.

#’s 804, 805, 806, 807,

808 & 809

Kowhai, Silver Birch, Kawaka, Kahikatea, Bottlebrush, Lancewood & Cabbage tree

23/25 Waterbank Crescent

Majority Good

Trees retained around remaining dwellings & excluded from work area with steel mesh security fencing

No actions required.

5.2. Noise and Vibration Monitoring

Noise monitoring has been undertaken for new plant and activities since commencement of construction in

January 2012 to assess levels against noise predictions (as per the Construction Noise and Vibration

Management Plan) and confirm compliance with the project noise criteria, specifically as relates to Consent

conditions CNV.2 for noise, CNV.3 for noise from air blast and CNV.4 and CNV.5 for vibration.

The focus for noise and vibration during March has been continuation of monitoring of noise and vibration

for blasting in the Southern approach trench. Vibration and noise monitoring for the Southern area blasts

was undertaken by Styles Group and the results are reported below. In addition, extended works required

outside normal working hours (07.30 – 18.00hrs Monday to Saturdays), particularly in the Southern

approach trench and for completion of the Richardson Road Bridge, has required noise assessment and

submission of Site Specific Noise management Plans (SSNMPs) to Council.

The table below shows the maximum measured noise levels for activities undertaken in March during the

trial of Sunday Southern approach trench structural works covered by SSNMP#18.



Date/time Measurement location Activity Noise level LAeq (dB)

Noise level LAMax (dB)

10/03/2013 7:52 a.m.

Avondale motor park site boundary, approx 20m from nearest noise receivers, 60m from works

Baseline measurement prior to works

44.3 64.4

10/03/2013 09.30 a.m.

Noise from Southern approach trench works, includes 2 diggers & trucks, plus small tools

49.8 69.6

10/03/2013 8:05 a.m.

98 Methuen Avenue, at site boundary, approx 10m from receiver, 80m from works


44.6 68.0

10/03/2013 09.47 a.m.


50.3 76.4

10/03/2013 8:53 a.m.

Rear of 79 Hendon Ave, site side of 3m noise wall, approx 20m from receiver, 40m from works


54.6 84.0

10/03/2013 9:27 a.m.


57.2 76.2

Project noise criteria Southern area (07.30 -18.00) Sundays (Apply at residential property) 45 85

Table showing Measured Noise Levels

The table below shows the over pressure and maximum vibration levels recorded for each blast

undertaken in March. The monitoring was carried out at the nearest dwelling and also the nearest

occupied dwelling (closest receiver). There were no measured exceedences of the peak sound pressure

level set out in CNV.3 measured at the closest receiver. There were no measured exceedences of the peak

particle velocity set out in CNV.5.

Ref Date Time Location Description Monitored

Lzpeak -2.5dB

adjustment for façade reflection

Max. PPV mm/sec

Residents relocated for blast?

254

255

256

257

258

259

260

261

262

263

264

265

05.03.13

05.03.13

07.03.13

07.03.13

08.03.13

11.03.13

12.03.13

13.03.13

15.03.13

15.03.13

18.03.13

19.03.13

10:25 10:29 10:00 16:03 14:22 16:17 14:42 14:00 10:00 14:00 10:00 14:00

SAT(2)071

SAT(1)016

SAT(1)017

SAT134

SAT(2)072

SAT135

SAT(2)073

SAT(2)074

SAT(2)075

SAT(2)076

SAT(1)018

SAT(1)019

24 holes. 1x1.5kg per hole. 2nd layer. 29 holes. 1x4.5kg per hole. 1st layer. 29 holes. 1x4.5kg per hole. 1st layer. 10 holes. 1x4.5kg per hole. 5th layer. 28 holes. 1x3.75kg per hole. 2nd layer. 37 holes. 1x4.5kg per hole. 5th layer. 33 holes. 1x2.25kg per hole. 2nd layer. 18 holes. 1x3.0kg per hole. 2nd layer. 24 holes. 1x3.0kg per hole. 2nd layer. 12 holes. 1x1.5kg per hole. 2nd layer. 27 holes. 1x3.0kg per hole. 2nd layer. 20 holes. 1x3.0kg per hole.

105 Hendon 116A Methuen 105 Hendon 116A Methuen 116A Methuen 105 Hendon 81 Hendon 116A Methuen 105 Hendon 81 Hendon 88 Methuen 105 Hendon 116A Methuen 105 Hendon 116A Methuen 116A Methuen 105 Hendon 105 Hendon 116A Methuen 105 Hendon 116A Methuen 105 Hendon

117dB 110dB 121dB 111dB 112dB 114dB 119dB 110dB 116dB 117dB 110dB 114dB 112dB 120dB 113dB 115dB 116dB 108dB 105dB 117dB 116dB 118dB

2.95@ 28Hz 1.17@ 27Hz 1.63@ 31Hz 1.70@ 19Hz 1.64@ 19.7Hz 2.31@ 18Hz 1.51@ 34Hz 1.39 @ 34Hz 2.80 @ 34Hz 1.73 @ 34Hz 1.84 @ 34Hz 2.03 @ 34Hz 1.47 @ 34Hz 5.75 @ 34Hz 1.29 @ 34Hz 1.10 @ 34Hz 7.72 @ 34Hz 1.43 @ 34Hz Less than 1.0 6.07 @ 26Hz Less than 1.0 4.93 @ 29Hz

out out out out in out in in out in in out in out out in out out out out in out



266

267

268

269

20.03.13

22.03.14

26.03.13

28.03.13

14:00 14:00 14:09 11:00

SAT(2)077

SAT(2)078

SAT(2)079

SAT(2)080

2nd layer. 19 holes. 1x3.0kg per hole. 3rd layer. 27 holes. 1x3.75kg per hole. 3rd layer. 45 holes. 1x3.0kg per hole. 3rd layer. 40 holes. 1x2.25kg per hole. 3rd layer.

116A Methuen 105 Hendon 116A Methuen 105 Hendon 116A Methuen 105 Hendon 116A Methuen 105 Hendon 116A Methuen

109dB 116dB 112dB 115dB 111dB 115dB 110dB 117dB

1.36 @ 37Hz 2.73 @ 30Hz 1.37 @ 11.8Hz 9.14 @ 31Hz 2.53 @ 26Hz 7.63 @ 15.8Hz 1.80 @ 41Hz 6.85 @ 27Hz 1.26 @ 14.2Hz

in out in out in out in out out

Closest occupied house

A number of Site Specific Noise Management Plans (SSNMP) were submitted to Auckland Council in March

under consent condition CNV13. The SSNMP submitted and approved in March 2013 are listed below.

SSNMP Ref Date of

Works

Night

Works

or Day

Works

Location of

Works

Description of

Works

Works

start

time

Works

end

time

Date SSNMP

Submitted to

Council

Date SSNMP

Approved by

Council

Works

now

complete

SSNMP#17

6/03/2013 Night Richardson Road

Vector pole removal

Richardson Rd

8pm 11pm 27/02/2013 5/03/2013 Yes

SSNMP#18

10/03/2013 Day-Sunday

Southern Approach

Trench

SAT structural work

9am 6pm 1/03/2013 5/03/2013 Yes

SSNMP#18Rev

2


Southern Approach

Trench

SAT structural work

9am 6pm 6/03/2013 6/03/2013 Yes

SSNMP#18Rev

3


Southern Approach

Trench

SAT structural work

9am 6pm 12/03/2013 15/03/2013 Ongoing

SSNMP#19

29/03/13-01/04/13

Night & Sunday/Public

Hol

Great North Road

Service investigations

Great North Rd

7am 7am 1/03/2013 5/03/2013 Yes

SSNMP#20

21/03/2013 Night Richardson Road

Street light installation

Richardson Rd bridge

9pm 4am 14/03/2013 20/03/2013 Yes

SSNMP#21

24/03/13-27/03/13

Night Richardson Road

Drainage installation

Richardson Rd

8pm 5am 15/03/2013 20/03/2013 Yes

SSNMP#22


Hendon Park Stream realignment B

tie ins

9am 5:30pm 15/03/2013 20/03/2013 Yes

SSNMP#23

26/03/2013 &

27/03/2013

Night Southern Approach

Trench

SAT structural work

8pm 12am 20/03/2013 22/03/2013 Yes

5.3. Air Quality Monitoring

Two Total Suspended Particulate (TSP) analysers and one met mast are required in the Southern Area

(Sector 9) and one TSP analyser with met mast is required in the Northern Portal Area (sector 7) under

consent conditions AQ16 and AQ17.



Two E-BAM TSP monitors are currently co-located at a site in Hendon Park considered representative of

relevant exposure to the Southern area main works. The Northern Portal area E-BAM is located outside

the Waterview School grounds.

E-BAM results for March show levels below the project consent limit for TSP with the exception of the

following episodes.

Southern Area (EBAMs 1 &2):

Flow faults were found on EBAM2 on 01/03/13 and on 11/03/13, which was rectified 05/03/13

and 13/03/13 respectively. Data during those periods were therefore invalid.

A flow fault was found on EBAM1 on 02/03/13, which was rectified 05/03/13. Data during that

period is therefore invalid.

01/03/13–daily average 181 µg/m3 at EBAM1 and data invalid at co-located EBAM2;

08/03/13–daily average 100 µg/m3 at EBAM1 and 89 µg/m3 at co-located EBAM2;

11/03/13–daily average 117 µg/m3 at EBAM1 and data invalid at co-located EBAM2;

12/03/13–daily average 90 µg/m3 at EBAM1 and data invalid at co-located EBAM2.

Northern Area (EBAM 3):

No exceedences were recorded of the daily average consent limit of 80 µg/m3.

Four exceedences of the hourly trigger level of 200 µg/m3 (one on 07/03/13 and 25/03/13, two

on 15/03/13; all at 12pm - 2pm); The met data for these times indicate elevated afternoon wind

speeds and westerly wind directions. The wind direction does not correspond with the site works

to the north and east of the analyser, so there may be another local source contribution,

especially given the repeat occurance at the same time of day.

The above exceedences of the daily consent limit in the Southern Area reflected elevated TSP

concentrations during construction hours (mainly during afternoons). Wind directions were largely

southerlies/ south-westerlies corresponding with site activities and wind speeds were elevated in the

afternoons on these days. Excavation works for the sewer realignment were occurring in the vicinity of the

southern area EBAMs at the beginning of March, which has contributed to these localised elevated levels.

These are now completed. It should also be noted that on the 19/03/13 an annual service of the E-BAMs

highlighted some issues with the humidity sensors calibration which may have been contributing to the

elevated TSP levels and the flow faults.

The Council Air Quality Compliance Officer has been kept informed of the measured exceedences and

analyser faults during March. Given the dry conditions and elevated dust levels, additional dust suppression

measures have been deployed during March, including a second water cart in the southern area. A

portable dust analyser was also used in March to provide wider dust monitoring coverage of the southern

area works and confirm compliance with project criteria.

Monitoring Period

Description EBAM % Data capture

TSP Concentration

in µg/m3

TSP Project criteria in

µg/m3

01/02/13-28/02/13

Maximum Hourly Average TSP 1-

southern area

90

1307 200

Maximum Rolling 24-Hour Average TSP 191 80

Maximum Daily Average TSP(Consent condition AQ.20 Trigger for investigation)

181 80

Maximum Hourly Average TSP 2- 75 716 200



Monitoring Period

Description EBAM % Data capture

TSP Concentration

in µg/m3

TSP Project criteria in

µg/m3

Maximum Rolling 24-Hour Average TSP southern area

104 80


89 80

Maximum Hourly Average TSP 3-

northern area

100 312 200

Maximum Rolling 24-Hour Average TSP 57 80


55 80

Table showing TSP Monitoring Results

5.4. Ground Water Monitoring

Monthly monitoring for piezometers identified in Appendix A of the Groundwater Management Plan

(GWMP) is ongoing, with the exception of around 19 piezometers around the tunnel which are still to be

installed (these piezometers are located between the Pak’n Save and Unitech and will be installed 12

months ahead of active tunnelling as per the rev 4 GWMP).

Piezometers located within 150 m of the Southern Approach trench have been monitored weekly since

June (appended), in advance of excavation above the water table that commenced in July. Dewatering

activities commenced in September when groundwater was encountered in the excavation at a depth of

approximately 9 m below ground level. Active excavation is occurring between chainage 10530 to 11080,

with dewatering (via sump pumps in the excavation) between chainages 10650 and 11080. Accordingly

more intensive monitoring of groundwater levels around the Southern Approach Trench (twice-weekly in

accordance with condition G.6) has commenced.

Piezometers in very close proximity to the trench (i.e. less than 30 m distance, and inside the construction

zone) have recorded a drop in groundwater level of between 2 m to 7 m in the basalt and Tauranga

Group. In the underlying East Coast Bays Formation (ECBF) changes in groundwater level of between 0 m

and 10 m are recorded. The larger changes in groundwater levels occur in wells immediately adjacent to

the drained walls at the portal face (CH11080) with drawdown reducing to the south and east as the

excavation shallows.

0

1

2

3

4

5

6

7

8

9

10

1 10 100 1000

Max

imu

m C

han

ge in

Le

vel (

m)

Distance from SAT (m)

V

A

ER

EW

EU

BH1106

BH519

DH823 BH1103BH1107 BH1108

Shallow bores alert levelDeep bores alert levelBasalt bores alert level



Figure 1: Drawdown vs. Distance Graph for SAT

Beyond the construction zone (> 30 m distance) piezometers have recorded a drop in groundwater level

of between 1 m and 6 m in the basalt and Tauranga Group, and generally less than 3 m in the ECBF. Again

the largest changes in groundwater levels occur near the portal reducing to the south and east; however

in addition there is also a zone of greater drawdown running along an axis to the north-east (BH519,

BH1103, BH1106, BH1107 and BH1108). These piezometers are located along the axis (and deepest part)

of the basalt lobe that is intersected by the Southern Approach Trench excavation. The zone of greater

drawdown along this axis likely reflects a fracture, of low storativity, that runs through the middle of the

basalt lobe. The drawdown may also to be exacerbated by the exceptionally low rainfall that fell in

Auckland in January, February and March (30% of average rainfall, therefore reducing direct recharge to,

and groundwater levels in the basalt), and following on from very low rainfall since September 2012 (50%

of average rainfall) .In this area there is a thickness of 8 m to 20 m of basalt. Given the thickness of

incompressible basalt, and that the alluvium remains saturated, the potential for damaging consolidation

settlement is considered to be low. A maximum total settlement of 35 mm to 50 mm is consented within

this area. Best estimate compressibility (mv) data indicates that a drawdown of some 11 m, for a period

of over 12 months would be required to effect 35 mm of settlement. The alarm trigger level for bores in

this area was recommended (December 2012) to be 8 m (i.e. allowing sufficient time to warn against

drawdown approaching that which might result in settlement exceeding the consented levels);

groundwater levels at the end of March remain above this level.

In light of the alert level exceedances we have increased the number and extent of wells being monitored

twice-weekly (the majority of which are continuously logged) and groundwater level data will continue to

be reviewed every other day until the pressure has fully stabilised. In addition we are currently reviewing

the groundwater level and settlement predictions for this area to confirm that there is no increase in the

potential for effects resulting from this drawdown.

Markers within 100 m of the area (generally located on control sections K, L and M) have been specifically

reviewed, with movement being less than 5 mm i.e. well within the trigger levels for these markers and

also within the typical seasonal range across the project.

5.5. Oakley Creek Flow Monitoring

Six (6) continuous flow monitoring stations have been established by NIWA in Oakley Creek. The data

from these are updated and reviewed on a monthly basis to investigate whether the construction works

have had any effect on base flows in Oakley Creek.

The monitoring stations are located as follows:

Oakley Tributary (i.e. Stoddard Creek) at Richardson road culverts

o Data from December 2010

Oakley Creek at Sewer Pipe Bridge (i.e. Diversion B cascade)


Oakley Creek at Bollard Avenue

o Data from August 2010

Oakley Creek at Cradock Street footbridge

o Data from September 2009

Oakley Creek at Waterview Downs

o Data from August 2010



Oakley Creek at Carrington Weir


One gauge (Stoddard Creek at Richardson road culverts) is upstream of the SH 20 streamworks (although

on a tributary), the sewer pipe bridge gauge is just downstream of Diversion C, and the other four gauges

are further downstream of the stream works and southern approach tunnel portal.

Five gauges were installed in late 2010, with the sixth (Cradock Street footbridge) installed in September

2009. Five gauge records thus include three late summer periods, and the sixth four. It is noted that (as

assessed by the gauged rainfall from the Whau at Mt Roskill Substation gauge, refer table below) the

2010 and 2013 late summer periods were relatively dry, and the 2011 and 2012 periods wet.

Oakley catchment late summer rainfall, 2010 -2013

Year January Rainfall (mm)

February Rainfall (mm)

March Rainfall (mm)

Total (mm)

2010 76 16 23 115

2011 202 33 148 383

2012 68 116 192 376

2013 5 28 58 91

Only the Cradock Street record includes the four summer periods. This gauge is downstream of New

North Road.

As observed from the Cradock St records, the Oakley Creek base flows in the late summer months

typically fall below 50 l/s (refer Figure 2 below). Recorded flows in 2010 were as low as 10 l/s in late

March. Late summer flows in 2011 and 2012 were generally higher than in 2010 and 2013, which is

consistent with the greater rainfall recorded in the catchment in those years.



Figure 2: Oakley Creek flows at Cradock Street Footbridge (2013 blue, 2012 grey, 2011 green, 2010 red)

From the Cradock Street record, the 2013 flows are not significantly lower than the 2010 flows, when

recorded rainfall in the catchment was comparable, January to March: 115 mm in 2010, 91 mm in 2013.

This indicates that there is no obvious effect so far from the works to divert the stream watercourse and

excavate for the southern portal approach trench.

Furthermore, comparison of records for January to March 2013, show recorded flows generally increasing

at gauges the further downstream, from the sewer bridge to Waterview Downs, as shown in Figure 3

below. This is consistent with increasing contribution from the aquifer to the stream during the low

rainfall period.



Figure 3: Oakley Creek flows downstream of SH20 southern approach works

5.6. Settlement Monitoring

Monthly monitoring of framework ground settlement markers identified in the Settlement Effects

Management Plan (SEMP) continues.

Framework markers within 150 m of the Southern Approach Trench have been being monitored

weekly since June 2012. Recorded vertical movements for most markers are within the pre-construction

seasonal range and in many cases within the accuracy of the survey (+/- 3 mm).

Movements of 5 mm to 12 mm (below their lowest pre-construction level) have been recorded in

markers M6, Z154, Z155 and X28 located on Hendon Ave adjacent to the active excavation zone. Marker

X28 has been fluctuating between 0 mm and 5 mm since works commenced in September 2012; given its

proximity to the construction zone and the details of the marker construction (pin in kerb / pavement) it

may be influenced by construction traffic in the area. Regardless these markers remain below their

consented settlement trigger levels. Differential settlement between markers is flatter than 1 in 4000

and remains well below trigger levels, as do assessed building damage categories in the area i.e. the

potential for adverse effects resulting from this apparent movement is considered to be negligible.

Regardless, these markers will continue to be monitored and reviewed weekly.

Surveyed levels for all markers are above proposed trigger levels.



Figure 4: Ground Movement vs. Time for SAT

5.7. Ecological and Water Quality Monitoring: Oakley Creek

Construction phase water quality monitoring has been carried out monthly, as required by consent

conditions. Results for January 2012 to March 2013 are summarised in Figures 3 to 8 below. Full

laboratory transcripts are available on request.

Concentrations of all contaminants were consistent with those measured earlier in the construction

phase, and comparable to pre-construction baseline levels. Results from monitoring locations

downstream of the works area (WR4 and WR5) are also generally comparable to results from upstream

locations. The TSS ‘spike’ recorded at site WR4 in January, appears to have only been temporary, or

perhaps a sampling artefact.

pH at iste WR4 (downstream of the southern works site) has been edging higher over the last 4 months

months. We have initiated a review of practices at the southern works area, and more intensive pH

monitoring at locations between the southern works area and WR4, to identify if activities there may be

related to this increase.

WCA has arranged for approximately 250 native plants to be supplied to Friends of Oakley Creek to

support its winter planting programme. These will be delivered and planted in early May.

-15.0

-10.0

-5.0

0.0

5.0

10.0

15.0

Sep 2010 Dec 2010 Mar 2011 Jun 2011 Sep 2011 Dec 2011 Mar 2012 Jun 2012 Sep 2012 Dec 2012 Mar 2013

De

form

atio

n f

rom

Ad

op

ted

Pre

con

stru

ctio

n M

inim

um

(m

m)

Date

Settlement Markers within 150 m of the SAT

J7

L7

M6

M7

X13

X15

X16

X18

Z142

Z152

Z154

Z155

Z156

X25

X26

X26a

X27

Z27

Z28

Z30All below trigger levels for markers within 150 m of the trench



Figure 3: Turbidity data from sites WR1-WR5 Figure 4: pH data from sites WR1-WR5

Figure 5: TSS data from sites WR1-WR5 Figure 6: Total copper data from sites WR1-WR5

Figure 7: Total lead data from sites WR1-WR5 Figure 8: Total zinc data from sites WR1-WR5

Fortnightly monitoring of significant vegetation, including geraniums, continues to be carried out. All

translocation of geranium plants from areas that will be affected by the works has been completed. This

has included successful transplanting into the Diversion C area.



Fish relocation in relation to the cut-over of Diversion B and in-filling of the original stream channel is

nearing completion. Numbers and size classes of fish relocated will be reported to Auckland Council,

MFish/MPI and iwi in due course.

5.8. Contaminated Soil Monitoring

Earthworks in March 2013 requiring off-site disposal of soil comprised those from the following locations:

• Watercare /Hendon sewer;

• Southern Approach Trench;

• CY9 construction yard/excavation of the Old Landfill to the west of the Southern Portal Trench;

• Stream Diversion B earthworks;

• Alan Wood Reserve stormwater pond (CY10 area);

• Section between Maioro and Richardson Roads; and

• Northern Portal Approach Trench.

No preparatory earthworks for the Great North Road Interchange works occurred.

About 85,100 tonnes of soil, 21,200 tonnes of basalt rock and 660 tonnes of refuse and contaminated soil

were removed from the project during the month. Almost all of the soil (98%) sourced from the deep

excavations in the northern and southern portal was removed to Wiri Cleanfill. A breakdown of the

volumes of soil disposed to the various facilities in April is provided on Tables 5.1 and 5.2 respectively.

Ongoing work in the south is expected to comprise:

• Removal of basalt and clay from the Southern Approach Trench for disposal to mainly Wiri

cleanfill (up to May 2013).

• Removal of clay between Maioro Interchange and Richardson Road for motorway alignment and

retaining wall construction to mainly Wiri cleanfill (up to September 2013).

• Removal of spoil from sewer diversion works for disposal to both Wiri cleanfill and/or Three Kings

Managed Fill (up to May 2013).

• Stream Diversion B earthworks for disposal mainly to Wiri cleanfill (up to April 2013).

• Excavation of old landfill in the vicinity of the Southern Approach Trench for disposal to Ridge

Road Quarry and/or Redvale Landfill (up to May 2013).

• CY9, CY10 and CY11 (spoil building) formation works for disposal to both Wiri cleanfill and/or

Three Kings Managed Fill (up to May 2013).

In the north, work relating to the northern portal and fill embankment will require disposal of spoil mainly

to Wiri Cleanfill. Spoil from piling expected to commence from April 2013 will require disposal to either

Wiri cleanfill, Three Kings Managed Fill and/or Redvale Landfill.



Table 5.1: Disposal location and approximate quantity of soil disposed off site from the south

Notes:

* Estimated volume based on a soil density of 1.7 tonnes/m3 ^ Estimated volume based on 19 tonnes for a articulated truck

Volume Volume Volume Volume Volume Volume Volume

Tonnes tonnes m3 * Tonnes tonnes m3 * Tonnes tonnes m3 * Tonnes tonnes m3 * Tonnes tonnes m3 * Tonnes tonnes m3 * Tonnes ^ tonnes m3 *

1-Mar-13 0 167212.93 98361 0.00 68763.11 40449 0.00 12051.2 7089 1042.36 236215.92 138951 3656.18 102173.76 60102 0.00 6865.48 4039 0.00 8,560 5,035

2-Mar-13 0 167212.93 98361 0.00 68763.11 40449 0.00 12051.2 7089 717.72 236933.64 139373 2031.66 104205.42 61297 0.00 6865.48 4039 0.00 8,560 5,035

4-Mar-13 0 167212.93 98361 0.00 68763.11 40449 0.00 12051.2 7089 1270.12 237486.04 139698 3298.89 105472.65 62043 0.00 6865.48 4039 0.00 8,560 5,035

5-Mar-13 0 167212.93 98361 0.00 68763.11 40449 0.00 12051.2 7089 1369.26 237585.18 139756 2920.97 105094.73 61820 0.00 6865.48 4039 0.00 8,560 5,035

7-Mar-13 0 167212.93 98361 0.00 68763.11 40449 0.00 12051.2 7089 1158.50 238743.68 140437 3977.07 109071.8 64160 0.00 6865.48 4039 0.00 8,560 5,035

8-Mar-13 0 167212.93 98361 0.00 68763.11 40449 0.00 12051.2 7089 940.08 239683.76 140990 3696.66 112768.46 66334 116.94 6982.42 4107 0.00 8,560 5,035

9-Mar-13 0 167212.93 98361 0.00 68763.11 40449 0.00 12051.2 7089 797.40 240481.16 141460 1913.04 114681.5 67460 0.00 6982.42 4107 0.00 8,560 5,035

11-Mar-13 0 167212.93 98361 154.44 68917.55 40540 0.00 12051.2 7089 1797.20 242278.36 142517 4405.80 119087.3 70051 0.00 6982.42 4107 0.00 8,560 5,035

12-Mar-13 0 167212.93 98361 238.02 69155.57 40680 0.00 12051.2 7089 1777.30 244055.66 143562 3870.14 122957.44 72328 0.00 6982.42 4107 320.00 8,880.00 5,223.53

13-Mar-13 0 167212.93 98361 161.78 69317.35 40775 0.00 12051.2 7089 1421.88 245477.54 144399 2957.26 125914.7 74067 0.00 6982.42 4107 48.00 8,928.00 5,251.76

15-Mar-13 0 167212.93 98361 54.60 69371.95 40807 0.00 12051.2 7089 1034.14 246511.68 145007 4007.64 129922.34 76425 0.00 6982.42 4107 0.00 8,928.00 5,251.76

16-Mar-13 0 167212.93 98361 0.00 69371.95 40807 0.00 12051.2 7089 539.80 247051.48 145324 3051.82 132974.16 78220 0.00 6982.42 4107 0.00 8,928.00 5,251.76

18-Mar-13 0 167212.93 98361 0.00 69371.95 40807 0.00 12051.2 7089 836.54 247888.02 145816 3200.58 136174.74 80103 0.00 6982.42 4107 0.00 8,928.00 5,251.76

19-Mar-13 0 167212.93 98361 0.00 69371.95 40807 0.00 12051.2 7089 689.60 248577.62 146222 3749.68 139924.42 82308 0.00 6982.42 4107 0.00 8,928.00 5,251.76

20-Mar-13 0 167212.93 98361 0.00 69371.95 40807 0.00 12051.2 7089 798.06 249375.68 146692 3308.60 143233.02 84255 0.00 6982.42 4107 0.00 8,928.00 5,251.76

21-Mar-13 0 167212.93 98361 0.00 69371.95 40807 0.00 12051.2 7089 701.30 250076.98 147104 2470.52 145703.54 85708 0.00 6982.42 4107 0.00 8,928.00 5,251.76

22-Mar-13 0 167212.93 98361 85.68 69457.63 40857 0.00 12051.2 7089 475.14 250552.12 147384 2289.90 147993.44 87055 0.00 6982.42 4107 0.00 8,928.00 5,251.76

23-Mar-13 0 167212.93 98361 26.66 69484.29 40873 0.00 12051.2 7089 418.46 250970.58 147630 1170.10 149163.54 87743 0.00 6982.42 4107 0.00 8,928.00 5,251.76

25-Mar-13 0 167212.93 98361 53.90 69538.19 40905 0.00 12051.2 7089 893.52 251864.1 148155 3509.04 152672.58 89807 164.90 7147.32 4204 64.00 8,992.00 5,289.41

26-Mar-13 0 167212.93 98361 28.04 69566.23 40921 0.00 12051.2 7089 899.02 252763.12 148684 3222.48 155895.06 91703 164.34 7311.66 4301 0.00 8,992.00 5,289.41

27-Mar-13 0 167212.93 98361 167.84 69734.07 41020 0.00 12051.2 7089 832.76 253595.88 149174 2622.76 158517.82 93246 216.12 7527.78 4428 0.00 8,992.00 5,289.41

28-Mar-13 0 167212.93 98361 159.02 69893.09 41114 0.00 12051.2 7089 818.02 254413.9 149655 1721.34 160239.16 94258 0.00 7527.78 4428 48.00 9,040.00 5,317.65

Month of March 0 1,129.98 0.00 21,228.18 67,052.13 662.30 480.00

Ridge Road Disposal Site

Cummulative total

Redvale Disposal Site

Cummulative total

Date

Cummulative total

Puketutu Managed Fill Site

Cummulative total

Wiri Disposal Site (Rock)Three Kings Managed Fill Site

Cummulative total

Greenmount Managed Fill Site

Cummulative total

Wiri Disposal Site (Cleanfill)

Cummulative total



Table 5.2: Disposal location and approximate quantity of soil disposed off site from the north

Volume Volume Volume Volume Volume Volume

Tonnes tonnes m3 * Tonnes tonnes m3 * Tonnes tonnes m3 * Tonnes tonnes m3 * Tonnes tonnes m3 * Tonnes tonnes m3 *

1-Mar-13 0 0 0 0.00 13,673.50 8043 0.00 0 0 0.00 0 0 760.10 33042.84 19437 0.00 941.38 554

2-Mar-13 0 0 0 0.00 13,673.50 8043 0.00 0 0 0.00 0 0 955.38 33998.22 19999 0.00 941.38 554

4-Mar-13 0 0 0 0.00 13673.5 8043 0.00 0 0 0.00 0 0 1682.75 35680.97 20989 0.00 941.38 554

5-Mar-13 0 0 0 0.00 13673.5 8043 0.00 0 0 0.00 0 0 1343.48 37024.45 21779 0.00 941.38 554

7-Mar-13 0 0 0 0.00 13673.5 8043 0.00 0 0 0.00 0 0 1164.26 38188.71 22464 0.00 941.38 554

8-Mar-13 0 0 0 234.24 13907.74 8181 0.00 0 0 0.00 0 0 986.72 39175.43 23044 0.00 941.38 554

11-Mar-13 0 0 0 0.00 13907.74 8181 0.00 0 0 0.00 0 0 615.32 39790.75 23406 0.00 941.38 554

12-Mar-13 0 0 0 0.00 13907.74 8181 0.00 0 0 0.00 0 0 518.24 40308.99 23711 0.00 941.38 554

13-Mar-13 0 0 0 0.00 13907.74 8181 0.00 0 0 0.00 0 0 289.48 40598.47 23881 0.00 941.38 554

15-Mar-13 0 0 0 0.00 13907.74 8181 0.00 0 0 0.00 0 0 659.66 41258.13 24269 0.00 941.38 554

16-Mar-13 0 0 0 0.00 13907.74 8181 0.00 0 0 0.00 0 0 399.70 41657.83 24505 0.00 941.38 554

18-Mar-13 0 0 0 0.00 13907.74 8181 0.00 0 0 0.00 0 0 620.04 42277.87 24869 0.00 941.38 554

19-Mar-13 0 0 0 0.00 13907.74 8181 0.00 0 0 0.00 0 0 520.54 42798.41 25176 0.00 941.38 554

20-Mar-13 0 0 0 0.00 13907.74 8181 0.00 0 0 0.00 0 0 548.66 43347.07 25498 0.00 941.38 554

21-Mar-13 0 0 0 0.00 13907.74 8181 0.00 0 0 0.00 0 0 658.56 44005.63 25886 0.00 941.38 554

22-Mar-13 0 0 0 0.00 13907.74 8181 0.00 0 0 0.00 0 0 659.08 44664.71 26273 0.00 941.38 554

23-Mar-13 0 0 0 0.00 13907.74 8181 0.00 0 0 0.00 0 0 681.60 45346.31 26674 0.00 941.38 554

25-Mar-13 0 0 0 0.00 13907.74 8181 0.00 0 0 0.00 0 0 406.50 45752.81 26913 0.00 941.38 554

26-Mar-13 0 0 0 0.00 13907.74 8181 0.00 0 0 0.00 0 0 609.18 46361.99 27272 0.00 941.38 554

27-Mar-13 0 0 0 0.00 13907.74 8181 0.00 0 0 0.00 0 0 1002.62 47364.61 27862 0.00 941.38 554

28-Mar-13 0 0 0 0.00 13907.74 8181 0.00 0 0 0.00 0 0 510.36 47874.97 28162 0.00 941.38 554

Month of Mar 0 234.24 0.00 0.00 15,592.23 0.00

Date

Puketutu Managed Fill Site Three Kings Managed Fill Site Greenmount Managed Fill Site Wiri Disposal Site (Rock) Redvale Disposal Site

Cummulative total Cummulative total Cummulative total Cummulative total Cummulative total Cummulative total

Wiri Disposal Site (Cleanfill)


5.9. Erosion and Sediment Control Monitoring

Erosion and sediment control devices constructed this month, were as-built and certified in accordance

with the approved CESCPs and consent conditions, with documentation sent to Auckland Council as

follows :

CESCP No. 23, Silt fence at CY9 7th March 2013

CESCP No. 29, Sewer creek crossing – sand bag dams 11th March 2013

CESCP No. 16, As-built SSF reinstalled to construct subsoil outlet 12th March 2013

CESCP No. 29, Sewer creek crossing – culvert and sandbag wingwalls 12th March 2013

CESCP No. 22, Temporary Bridge 20th February 2013

CESCP No. 29, Sewer creek crossing – culvert and sandbag wingwalls 22nd February 2013

CESCP No. 22, Stream diversion B – sandbag dams for overpumping 25th March 2013

CESCPs submitted and/or approved by Auckland Council during month of March

CESCP No. 29 – Sewer crossing of Oakley Creek Outlet

CESCP No. 103 – Site works north and south of Oakly Inlet

Daily visits to areas of the site have been made during March by a member of the Erosion and Sediment

Control Team.

Weekly Erosion and sediment control internal inspections of the northern and southern construction

areas were undertaken on the 7th, 14th, 21st and 28th of March.

5.10. Archaeological monitoring

No archaeological monitoring or investigations have been undertaken this month.

All earthworks in areas of the Northern Portal that have not previously been earthworked, along with

archaeological monitoring under General Authority 2013/174 are now complete.

General Authority 2013/518 for works in association with Stage 4 Great North Road Interchange Works

(Section 14 of the Historic Places Act) was received on 11th April. In accordance with Authority Condition

1, this authority will not be exercised for fifteen working days from the receipt of the authority, being the

6th May.

6. Stakeholder Management

6.1. Stakeholders – selected local liaison activity

Northern works area (Waterview)

• Strategic communications plan for the North completed

• Detailed communications / advertising campaign to manage Easter Road works

Two Construction Updates delivered to residents in Waterview and local community hubs / cafes in

waterview / Pt Chev, keeping locals informed on what’s happening on site



• Community liaison meeting participation

• Arranging for Waterview school students to paint a mural on the noise wall on the fringe of the

schools grounds

• Collaborating with the Waterview Coffee Project – strategizing and implementing stage one of the

container café/community hub

• Community BBQ at Waterview Reserve (also attended by The Coffee Project, Neighbourhood

Safety Group)

• Attended friends of Oakley Creek clean-up day

• Attendance at the Waterview Neighbourhood Safety Panel meeting

• Community Liaison Group meeting – Update on door-knocking, pedestrian improvements and

archaeological findings

• Ongoing regular meetings with Waterview School

• Manurewa Youth Development Group – Visit and talk by Engineers

Southern Works area (Owairaka / New Windsor)

• Door knocking/ letterbox drop and meeting with Valonia Street and Methuen Road residents to

advise of Valonia Wetlands test drilling and blasting

• Ongoing discussions with Valonia Street and Methuen Road residents to provide update in relation

to decision on whether to blast Valonia Wetlands or rock break

• Meeting with owners of Avondale Motor Park to discuss security and update on project works

• Meeting with local Methuen Road resident to discuss burlary concern and gain an update on recent

activities and providing update to the Police and Red Badge.

• Various meeting with Christ the King Church, Modern Chairs and Richardson Tavern advising them

of work and changes relating to Richardson Road

• Letterbox drop/ meeting Richardson Road residents to discuss night closure works, traffic switch/

footpath/ pavement reinstatement works and realignment of Richardson Road

• Attendance and introduction of WCA and project to Mt Roskill Business Association

• Attendance and meeting with Education Liaison Group to discuss strategy and future arrangements

in relation to updating schools on project

• Community Liaison Group meeting – site visit and update on project

• Fortnightly distribution of Construction Updates to local residents / businesses / cafes / libraries /

community centres / banks.

6.2. Queries, Concerns and Complaints

While we recorded a total of 11 individual complaints through March, many of these were either

unrelated to our project or were anticipated from previous interactions. The narrative below outlines why

we believe a truer analysis would be that two genuine complaints were received (below), alongside a

further two queries around noise and vibration.

Four of these complaints came from a single resident on Hendon Ave, well-known to the project team,

covering noise, dust and blasting – and all referred to either unrelated or fully compliant activities.



Two complaints, the lack of available local drinking water stations and the state of the new Waterview

Reserve, were forwarded to the local board as these fall within their jurisdiction. A further two

complaints were about noise and vibration, which on investigation appeared to be unsubstantiated by

any related construction activity, while another referred to speeding trucks not associated with the

project.

Two complaints were fielded about potential property damage around our southern works site. In both

cases we have carried instructed independent consultants to carry out follow-up condition surveys, and

we are awaiting their findings to allow us to close these out.



Appendix A

0 m distance

30.00

35.00

40.00

45.00

Jan-12 Mar-12 May-12 Jul-12 Sep-12 Nov-12 Jan-13 Mar-13 May-13

Rela

tive

Leve

l (m

)

Date

Vibrating Wire BH1102

BH1102 10m Manual Monitoring BH1102 14m Manual Monitoring BH1102 10m Continuous Monitoring BH1102 14m Continuous Monitoring Ground Level

Note - different start date

0 m distance

30.0

35.0

40.0

45.0

Oct-09 Jan-10 Jun-10 Oct-10 Feb-11 Jun-11 Oct-11 Feb-12 Jun-12 Oct-12 Feb-13 Jun-13 Oct-13

Rela

tive

Leve

l (m

)

Date

Stand Pipe BE10A-BH531

Ground Level BH531 14.5-17m Continuous Monitoring BH531 8.5-12m Manual Monitoring BH531 14.5-17m Manual Monitoring

0 m distance

30.0

35.0

40.0

45.0


Rela

tive

Leve

l (m

)

Date

Stand Pipe AU10B-DH821 (Cluster)

Ground Level DH821b 9.5-12m Continuous Monitoring DH821c 3.5-7m Continuous Monitoring

DH821a 20.5-27m Manual Monitoring DH821b 9.5-12m Manual Monitoring DH821c 3.5-7m Manual Monitoring

12 m distancereplaces DH828

25.00

30.00

35.00

40.00

45.00Ja

n-12

Mar

-12

May

-12

Jul-1

2

Sep-

12

Nov

-12

Jan-

13

Mar

-13

May

-13

Rela

tive

Leve

l (m

)

Date

Vibrating Wire BHB1 (SPZ005)

BHB1.iii 12m Manual Monitoring BHB1.ii 13.5m Manual MonitoringBHB1.i 18m Manual Monitoring BHB1.iii 12m Continuous MonitoringBHB1.i 13.5m Continuous Monitoring BHB1.i 18m Continuous Monitoring

Note - different start date.

20 m distancereplaces BH501

Note - different start date.

20.00

25.00

30.00

35.00

40.00

45.00Ja

n-12

Mar

-12

May

-12

Jul-1

2

Sep-

12

Nov

-12

Jan-

13

Mar

-13

May

-13

Rela

tive

Leve

l (m

)

Date

Vibrating Wire BHA4 (SPZ004)

BHA4.iii 13m Manual Monitoring BHA4.ii 14.5m Manual MonitoringBHA4.i 29m Manual Monitoring BHA4.iii 13m Continuous MonitoringBHA4.i 14.5m Continuous Monitoring BHA4.i 29m Continuous Monitoring

27 m distance

30.00

35.00

40.00

45.00


Rela

tive

Leve

l (m

)

Date



27 m distance

30.0

35.0

40.0

45.0


Rela

tive

Leve

l (m

)

Date


Ground_Level BH532 11.5-14.5m Manual Monitoring

Pipes extended

30 m distancereplaces DH824

30.00

35.00

40.00

45.00Ja

n-12

Mar

-12

May

-12

Jul-1

2

Sep-

12

Nov

-12

Jan-

13

Mar

-13

May

-13

Rela

tive

Leve

l (m

)

Date

Vibrating Wire BHB4 (SPZ008)

BHB4.iii 6m Manual Monitoring BHB4.ii 12.5m Manual Monitoring BHB4.i 19m Manual Monitoring

BHB4.iii 6m Continuous Monitoring BHB4.i 12.5m Continuous Monitoring BHB4.i 19m Continuous Monitoring

Ground Level

32 m distance

30.0

35.0

40.0

45.0


Rela

tive

Leve

l (m

)

Date


Ground_Level DH819a 10.5-15m Manual Monitoring DH819b 4-6.5m Manual Monitoring DH819c 1.5-3m Manual Monitoring Base_SP_3m

Pipes extended

43 m distance

25.0

30.0

35.0

40.0

45.0


Rela

tive

Leve

l (m

)

Date


Ground_Level BH502 6-7.9m Manual Monitoring BH502 25-30m Manual Monitoring Base_SP_7.9m

45 m distance

25.0

30.0

35.0

40.0

45.0


Rela

tive

Leve

l (m

)

Date

Stand Pipe BE10A-BH524 (Cluster)

Ground_Level BH524a 21.7-25m Manual Monitoring BH524b 5.3-9.5m Manual Monitoring Base_SP_9.5m

54 m distance

35.0

40.0

45.0

50.0

55.0


Rela

tive

Leve

l (m

)

Date

Vibrating Wire AU10B-DH820

Ground_Level DH820 2.5m Manual Monitoring DH820 5m Manual Monitoring DH820 12m Manual Monitoring Tip_Depth_2.5m Tip_Depth_5m

55 m distance

30.00

35.00

40.00

45.00


Rela

tive

Leve

l (m

)

Date

Vibrating Wire AU10B-DH817a

Ground Level DH817a 7m Continuous Monitoring DH817a 18m Continuous Monitoring DH817a 7m Manual Monitoring DH817a 18m Manual Monitoring

55 m distance

30.0

35.0

40.0

45.0


Rela

tive

Leve

l (m

)

Date

Stand Pipe AU10B-DH817b

Ground_Level DH817b 1.5-5m Manual Monitoring Base_SP_5m

74 m distance

30.00

35.00

40.00

45.00


Rela

tive

Leve

l (m

)

Date


BH1104 5m Manual Monitoring BH1104 8m Manual MonitoringBH1104 20m Manual Monitoring BH1104 5m Continuous MonitoringBH1104 8m Continuous Monitoring BH1104 20m Continuous Monitoring

78 m distance

35.0

40.0

45.0

50.0

55.0


Rela

tive

Leve

l (m

)

Date


Ground_Level DH816 3.5m Manual Monitoring DH816 12m Manual Monitoring Tip_Depth_3.5m Tip_Depth_12m

96 m distance

30.00

35.00

40.00

45.00


Rela

tive

Leve

l (m

)

Date

Vibrating Wire AU10B-DH823a

Ground Level DH823a 13m Continuous Monitoring DH823a 16.5m Continuous Monitoring DH823a 27m Continuous Monitoring

DH823a 13m Manual Monitoring DH823a 16.5m Manual Monitoring DH823a 37m Manual Monitoring

96 m distance

30.0

35.0

40.0

45.0


Rela

tive

Leve

l (m

)

Date

Stand Pipe AU10B-DH823b

Ground_Level DH823b 6.5-9m Manual Monitoring Base_SP_9m

105 m distance

30.00

35.00

40.00

45.00


Rela

tive

Leve

l (m

)

Date


BH1105 5m Manual Monitoring BH1105 8m Manual Monitoring BH1105 20m Manual MonitoringBH1105 5m Continuous Monitoring BH1105 8m Continuous Monitoring BH1105 20m Continuous MonitoringGround Level

112 m distance

30.00

35.00

40.00

45.00

Oct-09 Jan-10 Jun-10 Oct-10 Feb-11 Jun-11 Oct-11 Feb-12 Jun-12 Oct-12 Feb-13 Jun-13

Rela

tive

Leve

l (m

)

Date


Ground Level DH829 10m Continuous Monitoring DH829 13m Continuous Monitoring

DH829 40m Continuous Monitoring DH829 8m Manual Monitoring DH829 13m Manual Monitoring

DH829 40m Manual Monitoring Pak 'n' Save Pump Test Start Pak 'n' Save Pump Test End

157 m distance

30.0

35.0

40.0

45.0

Aug-09 Dec-09 Apr-10 Aug-10 Dec-10 Apr-11 Aug-11 Dec-11 Apr-12 Aug-12 Dec-12 May-13 Aug-13

Rela

tive

Leve

l (m

)

Date

Vibrating Wire BE10A-BH525 (Cluster)

Ground_Level BH525a 24m Manual Monitoring BH525b 9m Manual Monitoring Tip_Depth_9m

132 m distance

20.0

25.0

30.0

35.0

40.0

45.0

Aug-09 Dec-09 Apr-10 Aug-10 Dec-10 Apr-11 Aug-11 Dec-11 Apr-12 Aug-12 Dec-12 Apr-13 Aug-13

Rela

tive

Leve

l (m

)

Date

Vibrating Wire BE10A-BH503 (Cluster)

Ground_Level BH503a 40m Manual Monitoring BH503b 4m Manual Monitoring

Tip_Depth_4m Start Pak n Save Pumping Test End Pak n Save Pumping Test

135 m distance

30.00

35.00

40.00

45.00


Rela

tive

Leve

l (m

)

Date


BH1106 13m Manual Monitoring BH1106 15m Manual Monitoring BH1106 20.2m Manual MonitoringBH1106 13m Continuous Monitoring BH1106 15m Continuous Monitoring BH1106 20.2m Continuous MonitoringGround Level

136 m distance

30.0

35.0

40.0

45.0


Rela

tive

Leve

l (m

)

Date

Stand Pipe BE10A-BH519 (Cluster)

Ground Level BH519a 21-25m Continuous Monitoring BH519b 6.5-11m Continuous Monitoring

BH519a 21-25m Manual Monitoring BH519b 6.5-11 Manual Monitoring

146 m distance

30.00

35.00

40.00

45.00


Rela

tive

Leve

l (m

)

Date


BH1100 10.7m Manual Monitoring BH1100 15.5m Manual Monitoring BH1100 10.7m Continuous Monitoring

BH1100 15.5m Continuous Monitoring Ground Level

150 m distance

30.00

35.00

40.00

45.00


Rela

tive

Leve

l (m

)

Date



160 m distance

30.0

35.0

40.0

45.0


Rela

tive

Leve

l (m

)

Date


Ground_Level DH818a 14-18m Manual Monitoring DH818b 1-3.5m Manual Monitoring Base_SP_3.5m

212 m distance

30.00

35.00

40.00

45.00


Rela

tive

Leve

l (m

)

Date


BH1108 15m Manual Monitoring BH1108 20m Manual MonitoringBH1108 15m Continuous Monitoring BH1108 20m Continuous MonitoringGround Level

245 m distance

30.00

35.00

40.00

45.00


Rela

tive

Leve

l (m

)

Date


BH1107 21.5m Manual Monitoring BH1107 30m Manual MonitoringBH1107 21.5m Continuous Monitoring BH1107 30m Continuous MonitoringGround Level

-15.0

-10.0

-5.0

0.0

5.0

10.0

15.0Sep 2010 Dec 2010 Mar 2011 Jun 2011 Sep 2011 Dec 2011 Mar 2012 Jun 2012 Sep 2012 Dec 2012 Mar 2013

Defo

rmat

ion

from

Ado

pted

Pre

cons

truc

tion

Min

imum

(mm

)

Date

Settlement Markers within 150 m of the SAT

J7

L7

M6

M7

X13

X15

X16

X18

Z142

Z152

Z154

Z155

Z156

X25

X26

X26a

X27

Z27

Z28

Z30All below trigger levels for markers within 150 m of the trench

-15.0

-10.0

-5.0

0.0

5.0

10.0

15.0Sep-10 Mar-11 Sep-11 Mar-12 Sep-12 Mar-13 Sep-13

Axis

Titl

e

Date

Control Section LSouthern Approach Trench - Active Dewatering

L1

L10

L2

L3

L4

L5

L6

L7

L8

L9

+ve reading indicates settlement / subsidence, -ve reading indicates rise

-15.0

-10.0

-5.0

0.0

5.0

10.0


Mar

ker M

ovem

ent (

mm

)

Date

Control Section MSouthern Approach Trench - Active Dewatering

M1

M10

M2

M4

M5

M6

M7

M8

M9


-15.0

-10.0

-5.0

0.0

5.0

10.0


Mar

ker M

ovem

ent (

mm

)

Date

Additional Monitoring Markers (X)Southern Approach Trench - Active Dewatering

X1

X10

X11

X12

X13

X14

X15

X16

X17

X18

X19

X2

X20

X21

X22

X23

X24

X25

X26

X26A

X27

X28

X29


waterview connection project (ca3466)remediation) (sectors 1,3,5,6,7,8 and 9). land disturbance...

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