Waterview Connection Project (CA3466) · 2015-06-09 · The ambient air quality standard for PM 10...

Waterview Connection Project (CA3466):

Auckland Council Monthly Environmental Report Report 32 – Period October 2014

Document 025-RPT-03592

14 November 2014

October 2014 Environmental Report

AC Monthly Report October 2014-RB.docx Page 2 14 November 2014

Contents

1. Introduction .................................................................................................................................................. 3

2. Resource Consents ........................................................................................................................................ 3

3. Construction Works – November until February 2015 ................................................................................. 3

4. Site Meetings and Inspections ...................................................................................................................... 4

5. Environmental Monitoring............................................................................................................................ 4

5.1. Tree Management ................................................................................................................................ 4

5.2. Noise and Vibration Monitoring ........................................................................................................... 5

5.3. Air Quality Monitoring .......................................................................................................................... 6

5.4. Ground Water Monitoring .................................................................................................................... 8

5.5. Settlement Monitoring ....................................................................................................................... 10

5.6. Water Quality and Ecological Monitoring ........................................................................................... 11

5.6.1. Water Quality .............................................................................................................................. 11

5.6.2. Ecological Monitoring & Management ....................................................................................... 14

5.7. Contaminated Soil Monitoring ............................................................................................................ 15

5.7.1. Site monitoring............................................................................................................................ 15

5.7.1. Soil disposal ................................................................................................................................. 15

5.7.2. Phyllis Reserve landfill monitoring .............................................................................................. 17

5.8. Erosion and Sediment Control Monitoring ......................................................................................... 21

5.9. Archaeological monitoring .................................................................................................................. 21

5.10. Waste Management ....................................................................................................................... 21

5.11. Hazardous Substance Management ............................................................................................... 22

6. Stakeholder Management .......................................................................................................................... 22

6.1. Stakeholders – local liaison activity .................................................................................................... 22

6.2. General Communications Activity: Overview ..................................................................................... 23

6.3. Queries, Concerns and Complaints ..................................................................................................... 24

Appendix A .......................................................................................................................................................... 27


AC Monthly Report October 2014-RB.docx 14 November 2014

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 October 2014.

2. Resource Consents

With the exception of Consents ARC:38325, 38326, 38327 and 38328 which relate to rock crushing and

concrete batching plant activities, all other remaining consents have been triggered by works to date.

Appendix A provides a table of all the additional resource consents obtained for the project to date.

There were no additional Resource Consents obtained during the month of October.

3. Construction Works – November until February 2015

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

shows the anticipated works in the coming 3 months until 28th of February 2015.

South Work Package Nov Dec Jan Feb

Dominion to Maioro St

Earthworks, drainage, service relocations, ground improvement & structures

Pavement installation

Maioro St to Richardson Rd

Construct cycleway (including earthworks)

Subgrade preparation and pavements installation Northbound

Richardson Rd to cut in (SAT)

Hendon Footbridge Approach Ramp - North Valonia Street civil works

Median subgrade preparation and pavement works

Cycleway noise wall

SAT cut to CY9 Load out spoil to Wiri

Tunnel Backfill

Cross passage construction and excavation

North Work Package Nov Dec Jan Feb

Northern Approach Trench (NAT) & surrounds

TBM breakthrough and turnaround (TBM & Gantry 1)

Start Southbound Tunnel Drill, Great North Road Traffic Switch

Second TBM Turnaround (Gantry 3 & 4 & culvert gantry)

NAT infill columns

Footpath construction & landscaping 23 - 33 Waterbank Cres

Waterbank Reserve – Landscape Park Areas/ Playground

Howlet Reserve Walkway



Northern Fill, Oakley Inlet (the Bog) & Ramp Construction

Construct columns and cross heads at Ramps 3 and 4

Beam Placement – Ramp 3

Oakley Creek Footbridge – investigation works/ site establishment

Great North Rd Interchange

Machete - Construct ramp 4 northern abutment

Spearhead - Undercut and bulk fill for ramp widening

Cleaver – Slip form barrier, footpath and pavement construction

Boomerang - Gas relocation works

Carrington Rd Interchange

Retaining Wall 601 – West Carrington Rd – Soil nails, bench and shotcrete

Retaining Wall 601 – East Carrington Rd – Soil nails, bench and shotcrete

Retaining Wall 601 – East Carrington Rd – Panel placement

Retaining Wall 603 – West Carrington Rd – Soil nails, bench and shotcrete

Retaining Wall 603 – East of Carrington Rd – Soil nails and piling

Retaining Wall 603 – Demolition of old wall

4. Site Meetings and Inspections

Auckland Council’s Erosion and Sediment Control officers visited Northern area works on the 16th of October.

No Council Erosion and Sediment Control inspections were undertaken in the South during the month of

October.

5. Environmental Monitoring

5.1. Tree Management

Grant Sirl, Arborist – Arbor Advice Ltd (the Project Arborist) visited the site in September. His report is

included below;

Table 1 – Amenity Trees

Amenity Tree

Species Location Health Fencing Observations/recommended actions

South

522 Zelkova Within compound area adjacent north side Richardson Rd

Good. Good

Actions Required – Section of protective fence requires repair. Grass within fence requires mowing.

698 Group various native species

Alan Wood Reserve, access via Methuen Rd

Good/ fair Sound barrier wall excludes grove of vegetation from work site.

Actions required. No access to grove of vegetation. Sound barrier wall prevents access from public walkway. Observations from landscaped stream embankment identified Woolly Nightshade appearing above wall. Anticipate weed infestation multiplying that will need attention.



Grove of trees

of various species

Kowhai, Karamu, Tree fern & various native & exotic species.

Located southwest side of Alan Wood Reserve either side of sewer alignment.

Good Good. Actions required. Silt cloth fragments still evident along northern edge of construction zone. Weed infestation occurring within drainage overflow outlet alignment (Wattle & Woolly Nightshade).

512, 513 to

516 and 519

Titoki, Prunus, Totara, Tarata, Karaka & Cabbage

Located near western apex of Allan Wood Reserve outside designation area.

Good / fair.

Good. Main construction zone excluded from public area with solid steel pipe/ mesh fencing.

Actions required for southern totara. Wattle saplings establishing adjacent to subject tree. Require removal.

North

N/A Pohutukawa Waterview Primary School, (outside designation).

Good Sound wall separates tree from site.

No actions required.

Status quo. Overall vitality of tree reasonably good. Deadwood becoming more prevalent in northern aspect of crown. Epicormic growth established upon reduced stems and throughout crown.

# 811 Titoki (x2) Herdman Street - street trees

Good/ Fair

Trees excluded from construction by sound wall


# 247 Pohutukawa Waterview Reserve

Fair Tree relocated to Reserve


Tree health status appears good following tree relocation.

Totara Robinia Karaka Karaka

Located within Star Mill site - archaeological area

Good/Fair Trees in archaeological area have been fenced off from construction

No actions Required.

Tree coverage within area has been reduced following the clearance of vegetation to facilitate the construction of a path and bridge.

#'s 804, 805, 806, 807,

808 & 809.

Kowhai, Silver Birch, Kawaka, Kahikatea, Bottlebrush. Lancewood & Cabbage T

23-25 Waterbank Crescent

Majority Good

Specific trees have been retained as part of the reserve establishment.

No Actions Required.

Site contouring works and the addition of topsoil undertaken. Mulch over the root plate of trees to be completed.

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 October has been assessment of extended works required outside

normal working hours (07.30 – 18.00hrs Monday to Saturdays), submission of Site Specific Noise

management Plans (SSNMPs) to Council and noise monitoring of the northern area construction works at

night. Monitoring results at Carrington Road for soil nail works covered under SSNMP#55Rev3 and at GNRI

for concrete pour works under SSNMP#58Rev2, as shown in Table 2, have indicated noise levels were below

predicted levels in the approved SSNMP at the nearest receivers.

Table 2 - Measured Noise Levels

SSNMP Date/time Measurement location

Activity Noise level LAeq (dB)

Noise level LAMax (dB)

SSNMP#55Rev3 19/10/14

9.40pm

26 Carrington

Road

Soil nail installation using

drill rig adjacent

Carrington Bridge

55.8 68.1

Predicted noise level for works under approved SSNMP#55Rev3 63 75

SSNMP#58Rev2 30/10/14

11.18-

11.58pm

60A Alberta Street

R4P11 Tabletop concrete

pour. Contrete truck and

pump, concrete vibrators.

63.9-

64.6

71.4-

74.9

Predicted noise level for works under approved SSNMP#58Rev2 65 75

The SSNMPs submitted and approved in October 2014 pursuant to consent condition CNV13 are listed in

Table 3. below.

Table 3: SSNMPs submitted and approved for October

SSNMP Ref

Date of Works

Night Works or Day Works

Location of Works

Description of Works

Works start/ end time

Date SSNMP

Submitted to Council

Date SSNMP

Approved by

Council

Monitoring specified in

SSNMP

SSNMP#61

Rev3

05/11/14-20/12/14

night GNRI Ramp 3

construction 7pm 7am 15/10/14 20/10/14 Yes

SSNMP#64

09/11/14-30/11/14

night GNRI Ramp 1

construction 7pm 5am 8/10/2014 14/10/14 No

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 monitors are located on site in the Southern Portal area: EBAM1 is located at 123 Hendon

Avenue and EBAM2 is located near the Southern Approach Trench. The Northern Portal area E-BAM is

located outside the Waterview School grounds (EBAM3). EBAM1 has been fitted with a PM10 inlet (as of

October 2014), on agreement with Auckland Council. EBAM2 & EBAM3 are both fitted with TSP inlets.



Trigger levels for PM10 have been adopted [1] for PM10 monitoring undertaken at EBAM1. This includes a

maximum 15-minute average of 200 µg/m3, a maximum hourly average of 150 µg/m3 and a maximum daily

average of 50 µg/m3. The ambient air quality standard for PM10 is 50 µg/m3 expressed as a 24-hour mean.

E-BAM results for October show levels below the project daily consent limit for TSP at all monitoring sites. A

summary of results for the EBAMs during this period is provided below.

Southern Area (EBAMs 1 &2):

One exceedance was recorded of the 15-minute average PM10 trigger level of 200 µg/m3 at EBAM1.

The maximum concentration recorded during the monitoring period was 221 µg/m3 at 09:15 a.m

on 04/11/14; the increased concentration was measured immediately following maintenance of

the equipment and is not considered to be a true reading.

No exceedences were recorded of the hourly average PM10 trigger level of 150 µg/m3 at EBAM1.

No exceedences were recorded of the daily average PM10 consent limit of 50 µg/m3 at EBAM1.

A flow failure occurred at EBAM1 on 02/10/14; the fault was repaired on 04/10/2014.

No exceedences were recorded of the hourly average TSP trigger level of 200 µg/m3 at EBAM2.

No exceedences were recorded of the daily average TSP consent limit of 80 µg/m3 at EBAM2.

A beta count failure occurred at EBAM2 on 03/10/14, maintenance was completed to repair the

fault on 04/10/14; the fault re-occurred on 07/10/14, maintenance was completed on 08/10/14;

following the second round of maintenance, another re-occurance of the fault occurred on

13/10/14. The instrument was exchanged for another EBAM on 14/10/14.

Following the beta count failure at EBAM2, each of the instruments were exchanged periodically

for in-house maintenance to ensure their ongoing performance.

Northern Area (EBAM 3):

No exceedences were recorded of the TSP hourly average trigger level of 200 µg/m3 at EBAM3.

No exceedences were recorded of the TSP daily average consent limit of 80 µg/m3 at EBAM3.

Table 4 – TSP and PM10 Monitoring Results for October

Monitoring Period

Description EBAM % Data capture

TSP Concentration

in µg/m3

TSP Project criteria in

µg/m3

01/10/14 -31/10/14

Maximum 15-Minute Average PM10 1-southern area

94.1% 221 200

Maximum Hourly Average PM10 68 150

Maximum Rolling 24-Hour Average PM10 34 50

Maximum Daily Average PM10 25 50

Maximum Hourly Average TSP 2-southern area

92.4% 170 200

Maximum Rolling 24-Hour Average TSP 45 80

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

23 80

Maximum Hourly Average TSP 3-northern area

99.7% 73 200

Maximum Rolling 24-Hour Average TSP 27 80

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

25 80

[1]

Short term triggers derived from GLA and London Councils (2006) The control of dust and emissions from construction and demolition Best Practice Guidance



5.4. Ground Water Monitoring

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

(GWMP rev 4) is ongoing; with the exception of 2 piezometers which are still to be installed. The

piezometers are located in Ngati Whatua owned land within the grounds of Unitec and in the Dorje Chang

Institute, and will be installed when landowner approvals allow. As noted below, where a piezometer is

within a zone of active excavation twice-weekly monitoring is being undertaken.

Southern Approach Trench

The southern approach trench extends from approximate CH10530 (to the south) to the southern portal

head wall at CH11080. Dewatering via sump pumps in the excavation and below the base slab has been

occurring since September 2012. The SAT structure has been complete since August 2013.

Drawdown in the basalt, alluvium and ECBF reached steady state conditions (between March and June

2013) and groundwater levels have since fluctuated at or about the same level in response to changing

rainfall conditions.

Piezometers around the SAT have recorded negligible change in groundwater level since the last report.

Eight (8) piezometers (BH519, BH1106, DH823A, SPZ005, DH825, DH826, BH503 and DH829) continue to

have groundwater levels fluctuating about or below alert trigger level, as has been the case since early

2012 with groundwater levels having reached steady state conditions (excluding seasonal fluctuations).

These piezometers have also shown negligible change in level since the last report. The water level in the

ECBF at BH503a remains 0.5 m below the alarm level i.e. no change over the last 6 months.

As outlined in previous reports the potential for damaging consolidation settlement is considered to be

very low and groundwater levels in these piezometers remain well above the alarm trigger levels. As such it

is intended to review the alert and alarm water levels over the coming months.

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

reviewed, with movement being within the trigger levels for these areas.

Seasonal Trends

Total rainfall in October was within the normal range (approx. 120 % of mean, Figure 1), but occurred as 3

peak events resulting in an overall negligible change in groundwater levels across the wider Project area.



Figure 1: Auckland Monthly Rainfall Data

Tunnels

Tunnelling commenced on the 14th November 2013 and the TBM broke-through the Northern Portal,

completing the first tunnel on the 29th September 2014. The northbound drive is anticipated to commence

on December 1st 2014.

There were no tunnelling activities undertaken in October.

Five (5) piezometers located around Cradock Street continue to have groundwater levels below alert trigger

level (as a result of a head intervention undertaken in July 2014). These piezometers have also shown

negligible change in level since the last report. As with piezometers in Alan Wood Reserve:

We anticipate that groundwater levels piezometers will continue to slowly recover over a long time

period;

Groundwater levels in these piezometers remain well above the alarm trigger levels; and

The drawdown is within the ECBF rock and so the potential for damaging consolidation settlement

is considered to be very low (as confirmed by on-going survey monitoring).

Northern Approach Trench

The Northern Approach Trench extends from the northern portal head wall at approximate CH13500 (to

the south) to the beginning of the Great North Road interchange at approximately CH13800. Excavation is

at final depth (and base slab constructed) over this length with active dewatering underway since August

2013.

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Auckland Monthly Rainfall Data

Whenuapai Wairau Rd Mt Albert Mt Roskill Avondale Mean Auckland Rainfall

Source: ARC Hydrotel website



Groundwater levels have generally been steady, or have risen since March 2014 in response to rainfall.

Piezometers within 150 m of the trench have recorded negligible change in groundwater level since the last

report.

The groundwater level in all piezometers is within consented levels.

5.5. Settlement Monitoring

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

Management Plan (draft SEMP rev4), and additional markers installed since that time continues.

Southern Approach Trench

The majority of markers continue to show movement within +/- 3 mm of their adopted pre-construction

minimum (i.e. within the accuracy of the survey) and generally show a broad flat trend.

Two markers (Z154 and Z155) have continued to record downward movements in the range of 10 mm to 22

mm since March 2013. These markers form a differential pair (in accordance with condition S.17);

differential settlement between the two markers is calculated to be ~1/1800 therefore the potential for

any adverse effects is considered to be negligible and all other markers in this area have indicated

movement of less than 3 mm to 5 mm (well within trigger levels).

Differential movement between all other differential marker pairs is flatter than 1 in 5,000 and remains

well below trigger levels, as are assessed building damage categories in the area. Markers will continue to

be monitored and reviewed monthly.

Tunnels

Markers located within 150 m of the TBM location were monitored weekly during active tunnelling. As no

tunnelling has been undertaken in October, monitoring for all framework markers has reverted to back to

monthly.

Monitoring arrays to the south of Oakley Esplanade, which had recorded up to 15 mm of mechanical

movement directly over the tunnel centreline, have shown little further movement (i.e. 2 mm to 3 mm)

since the completion of tunnelling.

Monitoring arrays in Oakley Esplanade, Great North Road and in the approach to the Northern Portal, have

recorded on average 5 mm further movement since the end of tunnelling. There is likely to be a seasonal

component to this. Regardless, maximum movements are still less than 30 mm which is a significant

improvement on BOI consent limits (up to 100 mm) through this area.

Northern Approach Trench

Surveyed ground levels have generally remained steady since the end of September, with minor

fluctuations in response to rainfall.

Markers around the NAT have shown movement in the range of 1 mm to 10 mm below their adopted pre-

construction level; well within adopted trigger levels.

Markers installed to monitor the slip adjacent to the BP on Great North Road (BP10 to BP22 and Z177) have

recorded downward movement of up to 75 mm since October 2013. An increase in the rate of movement

in the inclinometers installed in the slip was noted over this period and although some downward



movement is continuing it has been at a lesser rate through April and markers have continued to show

upward movement since May 2014 in response to rainfall.

Markers located around the BP building and fuel tanks, and on Great North Road between the BP and the

construction zone, have indicated less than 7 mm of movement i.e. the larger movements appear to be

wholly related to movement of the land slip not construction related ground settlement, and all these

markers have shown upward movement since May 2014.

Differential movement between marker pairs is flatter than 1 in 1500 in all other areas and remains well

below trigger levels, as are assessed building damage categories in the area. Markers will continue to be

monitored and reviewed weekly.

5.6. Water Quality and Ecological Monitoring

5.6.1. Water Quality

Construction phase water quality monitoring in Oakley Creek/Te Auaunga has been carried out monthly, as

required by consent conditions, with the most recent routine monitoring carried out on 16 October 2014.

The weather at the time of sampling was sunny with passing cloud, and there had been no rainfall in the

preceding two days. Pre-construction and construction phase monitoring results are shown in Figures 2 to 7

below.

Figure 2: Turbidity data from sites WR1-WR5



Figure 3: Total suspended solids (TSS) data from sites WR1-WR5

Figure 4: pH data from sites WR1-WR5



Figure 5: Total copper data from sites WR1-WR5

Figure 6: Total lead data from sites WR1-WR5



Figure 7: Total zinc data from sites WR1-WR5

The October routine water quality monitoring data are summarised as follows:

Turbidity and suspended solids were relatively low at all sites, and well below typical thresholds

which might indicate adverse water quality effects. Suspended solids concentrations at the three

monitoring locations downstream of the southern works site were less than the analytical detection

limit of 3 g/m3, but have been plotted as 50% of this value, i.e. 1.5 g/m3.

With the exception of site WR4, pH was near neutral, and within normal baseline (pre-construction)

levels at all sites.

pH at WR4, which is upstream of the WCA’s southern works area on the Richardson Road tributary,

was slightly elevated (8.8), it was considerably lower than in the August monitoring round, when pH

9.9 was recorded at this site, and comparable to the September result. WR4 has a history of elevated

pH during spring and summer months, extending back to before the WCA commenced work in the

area.

Copper, lead and zinc were also relatively low and within the normal range of concentrations

recorded prior to commencement of construction.

5.6.2. Ecological Monitoring & Management

In August, it was reported that one pair of the endangered New Zealand dotterel had established a nest in

the ‘teardrop’ area, under Ramp 3, and three eggs had been laid. The area was cordoned off with temporary

fencing, and staff were briefed to minimise access, and to avoid disturbing the nest when entering the area.

In September it was reported that the nest appeared to have been predated (the eggs had disappeared and

the adult pair of dotterels had moved away. It appears that this pair of dotterels has now constructed a new

nest in the area, although we have not identified the exact location, for fear of disturbing the birds. The nest

is in an area that is not presently being worked. Signs have been put up to identify a clear zone and all staff

advised to keep out of this area. The WCA site team is being updated on Dotteral activities at weekly

toolboxes, and details are passed on to the Causeway Alliance who are working nearby.



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.

A number of eels have recently been relocated out of a temporary stormwater pond at the Wiri fill site, prior

to it being decommissioned.

Six monthly ecological monitoring (required prior to the start of each earthworks season) has been

completed, and the report is currently being prepared for submission to Council.

5.7. Contaminated Soil Monitoring

5.7.1. Site monitoring

No discovery of unexpected contaminated soil was reported during the month of October 2014.

5.7.1. Soil disposal

The TBM completed the northbound tunnel in October and is being turnaround at the Northern Portal.

Relatively minor volumes of soil was disposed to Three Kings Managed Fill and Ridge Road Quarry from the

southern and northern parts of the project as shown on Tables 5 and 6 respectively. The soil came from

works relating to excavations from the Great North Road Interchange works and subgrade preparation works

in the south.

Table 5: Disposal location and approximate quantity of soil disposed off site from the south in October 2014

Notes:

* Estimated volume based on a soil density of 1.7 tonnes/m3

^ Estimated volume based on 19 tonnes for a articulated truck

Volume

Tonnes tonnes m3 *

2/10/2014 222.06 93868.98 55217

3/10/2014 189.42 94058.4 55328

7/10/2014 449.78 94508.18 55593

8/10/2014 202.14 94710.32 55712

14/10/2014 60.18 94770.5 55747

15/10/2014 513.42 95283.92 56049

16/10/2014 653.08 95937 56434

17/10/2014 322.52 96259.52 56623

20/10/2014 603.04 96862.56 56978

21/10/2014 324.34 97186.9 57169

22/10/2014 334.24 97521.14 57365

24/10/2014 372.38 97893.52 57584

28/10/2014 23.64 97917.16 57598

29/10/2014 339.62 98256.78 57798

31/10/2014 581.24 98838.02 58140

Month of Oct 5191.1

Date

Three Kings Managed Fill Site

Cummulative total



Table 6: Disposal location and approximate quantity of soil disposed off site from the north in October 2014

Notes:

* Estimated volume based on a soil density of 1.7 tonnes/m3

^ Estimated volume based on 19 tonnes for a articulated truck

Volume

Tonnes ^ tonnes m3 *

1/10/2014 454.46 42395.20 24938

2/10/2014 382.36 42777.56 25163

3/10/2014 196.14 42973.70 25279

8/10/2014 143.66 43117.36 25363

9/10/2014 86.04 43203.40 25414

10/10/2014 95.52 43298.92 25470

13/10/2014 195.64 43494.56 25585

14/10/2014 278.28 43772.84 25749

15/10/2014 171.46 43944.30 25850

Month of Oct 2003.56

Ridge Road Disposal Site

Cummulative total

Date



5.7.2. Phyllis Reserve landfill monitoring

5.7.2.1. Overview

Monitoring of landfill gas, pH and electric conductivity (eC) in selected groundwater wells at the Phyllis

Reserve commenced in October 2013 (i.e. 1 year prior to the estimated time of arrival of the tunnel boring

machine (TBM) beneath the landfill), to meet consent conditions CL.9 and CL.10. The monitoring programme

is described in Section 3.4.3 of the Contaminated Soil Management Plan Rev 4/5.

The intention of the monitoring is to establish if ground disturbance from the TBM has resulted in the release

of landfill gas or leachate into underlying groundwater.

Monitoring locations are shown on Map 5.1 below.

Table 7 below provides a summary information of the groundwater wells that has been selected for pH and

eC measurements.

Table 7: Groundwater well summary information

Borehole ID Location Well screen depth (m) Screened geological unit

BH709d Northern boundary of landfill 1.5 – 5 Landfill material

BH707 Western boundary of landfill 5.5 – 9 Landfill material

(Now decommissioned)

BH709a1 Northern boundary of landfill 6.5 – 10.5 Landfill material

BH709a Northern boundary of landfill 15.5 – 19.5 Weathered Waitemata Group, about 7.5 m below landfill base

BH709c Northern boundary of landfill 12.3 – 16.8 Tauranga Group, about 4.8 m below landfill base

DH832d Downgradient of landfill 5.5 – 8 Tauranga Group



Map 5.1: Monitoring locations

MW4 MW3

MW1

MW2

BH709d

BH709a1

BH709a

BH709c

DH832



5.7.2.2. Landfill gas monitoring results

Landfill gas monitoring was undertaken on 16 October 2014. Results of the landfill gas monitoring are

provided in Table 8 below. Results are within the range of the historical and baseline monitoring data, even

when the TBM was located in the vicinity of the landfill.

Table 8: Methane concentrations (% vol)

MW1 MW2 MW3 MW4

(upgradeint)

Historical range1 0 – 0.3 0 – 5.9 0 – 24.2 0 – 0.1

25/10/2013 0 0 48 0

15/11/2013 0.1 0 27.1 0

13/12/2013 0.1 0 7.5 0.1

9/01/2014 0 0 15.3 0

28/02/2014 0 0 22.8 0

31/03/2014 0 0 13.6 0

29/04/ 2014 0 0 15 0

30/05/2014 Not sampled2 0 12.9 0

02/07/2014 0.1 0.1 22.5 0

21/07/2014 0 0 5.2 0

30/07/2014 0 0 13.7 0

29/08/2014 0 0 0 0

30/09/2014 0 0 2.4 0

16/10/2014 0 0 2.5 0 1 Obtained from Auckland Council data - refer Contaminated Soil Management Plan Rev 4 2 No access to sample well as new lock had been installed

5.7.2.3. Groundwater monitoring results

The TBM passed under the landfill in July/August and reached the northern portal in October. The TBM is

not expected to commence tunnelling on the southbound tunnel until January 2015. Monitoring continued

to be undertaken in the selected groundwater wells at the landfill in mid October. Graphs of the

measurements, together with water level measurements, are presented below. No sample could be

obtained from BH709d as the borehole was dry.

Water levels in all wells are generally similar to levels at the same time last year.

pH and conductivity in all monitored wells are showing similar trends and are within the

preconstruction range.

The review continues to show that there is no clear indication of any water quality degradation that

can be associated with tunnelling and TBM activities under the landfill.



0

1

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pH

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bgl

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BH709d_1.5-5m

Water Level PH

0.0

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14

Co

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BH709d_1.5-5m

Water Level Conductivity μS

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90

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20/06/2013 9/08/2013 28/09/2013 17/11/2013 6/01/2014 25/02/2014 16/04/2014 5/06/2014 25/07/2014 13/09/2014

pH

GW

L (m

bgl

)

Date

BH709a1_6.5-10.5m

Water Level PH

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20/06/2013 9/08/2013 28/09/2013 17/11/2013 6/01/2014 25/02/2014 16/04/2014 5/06/2014 25/07/2014 13/09/2014

Co

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BH709a1_6.5-10.5m


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BH709a_15.5-19.5m

Water Level PH

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1400.010

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BH709a_15.5-19.5m


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140.0

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pH

GW

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bgl

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BH709c_12.3-16.8m

Water Level PH

0

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1300

14000.01.02.03.04.05.06.07.08.09.0

10.011.012.013.014.015.016.017.0

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BH709c_12.3-16.8m


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8.00

9.00

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11.00

12.00

13.00

14.00

pH

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DH832_5.5-8m

Water Level PH

0.0

100.0

200.0

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1400.00.00

1.00

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7.00

8.00

9.00

10.00

11.00

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14.00

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L (m

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DH832_5.5-8m




5.8. Erosion and Sediment Control Monitoring

New and amended CESCP’s developed and approved by Auckland Council in October include:

123 - Mega Flint topsoil strip

126 - CleaverEast Footpath Construction

124 Rev 2 – Spearhead Area Ramp Widening

Regular monitoring of erosion and sediment control has been undertaken in October 2014 by the Erosion

and Sediment Control Team and Construction Teams.

5.9. Archaeological monitoring

General archaeological monitoring of the works continues to be undertaken by the project archaeologists

Clough and Associates in accordance with consent conditions and the following Heritage New Zealand (HNZ)

Authorities:

2013/174 - General Authority for earthworks in association with Stage 3 Northern Portal Works.

2013/518 - General Authority for earthworks in association with Stage 4 Great North Road Interchange

Works.

Final reports to release archaeological authorities have been begun for the southern section of works and

will look to be delivered once works are complete for the Oakley Creek Heritage Area.

An additional archaeological authority has been granted by HNZ for the works on the path to Howlett

Reserve. The authority number is 2015/296.

A new authority is also being developed for the Oakley Inlet Heritage Area (OIHA) around the site of the old

Star Mill. Open space and restoration works in this area will need to be planned in accordance with consent

conditions ARCH5 (e). Specialists from Salmond Reed and Scottish Stone have visited site and given their

recommendations for the limited restoration of the area. Part of this work will have to take into

consideration the new feature that was discovered during excavation for a haul road into the area. The

feature is still to be confirmed but it is potentially the old footings for the Cornish boiler that still rests in the

area. WCA Accidental Discovery Protocols were followed when it was uncovered and the feature has now

been covered and protected until the full HNZ authority has been granted.

5.10. Waste Management

Regular inspections of the Waste Storage Areas are being carried out to ensure they are kept tidy and

recyclable materials are being separated. Yards are set up with bins for wood waste, plastic waste, general

waste and steel. Office areas have co-mingled recycling bins and paper bins.

Regular audits of Skips are being carried out and opportunities to reduce waste generation and to reuse

materials whenever possible are regularly investigated.



Waste tracking for the project up to the end of October shows 65% of waste being diverted from landfill for

recycling. A break down for the project to date is shown in Table 10.

Table 9: Waste Records

Wood Gib Metal Plastics Comingle Card & Paper

Poly-styrene

Hardfill General Waste

Total

433.3 1.1 268.8 72.0 18.9 27.2 7.9 265.7 595.9 1690.86

26% 0% 16% 4% 1% 2% 1% 16% 35% 100%

Demolition of the retaining walls at Great North Road Interchange is producing concrete waste which is

being recycled via Ward Demoliton.

5.11. Hazardous Substance Management

Monthly inspections of hazardous substance storage areas and associated controls, such as spill kits, are

identified in the Hazardous Substances Management Plan (HSMP rev4) that has been prepared to meet

condition CEMP.10, and are ongoing.

There are hazardous substance storage areas for the Project established within construction yards CY6, CY9

and CY10, 160 Stoddard Road Southern Area stores and at East Tamaki Precast Yard. Hazardous Substances

and New Organisms (HSNO) Act 1996 certification requirements have been identified as below for these

storage areas, in liaison with the Project’s HSNO Test Certifier Pete Roche.

During October, four more staff attended a HSNO approved handler course run by AMS Group. This brings

the total to 48 staff trained as approved handlers on the Project.

Table 10: Project Test Certification

Storage Area Test Certification Date certified

CY6 Northern area

Location test certificate: 250 litres class 3.1A, 600 litres class 3.1B and 3.1C (combined).

02 August 2014 – 01 August 2015

CY9 Tunnel team

Stationary Container System test certificate: 60,000 litres Sodium silicate. Stationary Container System test certificate: 30,000 litres diesel. Location test certificate: 2000kg class 2.1.1A, 162m3 class 5.1.1.

07 November 2013 – 06 November 2015 14 May 2014 -13 May 2019. 02 August 2014 – 01 August 2015

CY10 Tunnel team

Location test certificate: 600 litres class 3.1B and 3.1C (combined).

04 April 2014 – 03 April 2015

160 Stoddard Road, Southern area

Location test certificate: 500 litres class 3.1B and 3.1C (combined).

02 August 2014 – 01 August 2015

East Tamaki Precast Yard Location test certificate: 6000 litres class 3.1B and 3.1C (combined).

02 August 2014 – 01 August 2015

6. Stakeholder Management

6.1. Stakeholders – local liaison activity

We continue to enjoy a good relationship with our surrounding communities, which are founded on a

proactive approach to informing of any changes to the norm and ‘personal service’ through our dedicated



community liaison managers. Beyond our everyday interactions with residents and the delivery of monthly

project updates, below is a summary of some of our local activity in October:

Southern sector

Communication for the closure of Ernie Pinchers footbridge from October 6 2014 to January 2015.

Negotiation with Auckland Council regarding a permanent location for the Valonia community garden

Northern sector

Continued discussions with resident regarding remedial works at 6 Oakley Ave

Presentation to children and parents from Mt Albert Playcentre – 24.10.14

Assistance with site tours in the north

Notification of table top R4P11 concrete pour and subsequent relocation of 4 families in the sensitive zone. Relocation was offered to 6 families as a good will gesture – 4 took us up on the offer – 30.10.14

Community Service undertaken for local resident in Pt Chevalier who had his home relocated because of our works. Claire applied compost and fertilizer and planted a crop of vegetables for him – 30.10.14.

Two meetings were held in conjunction with our WCA Urban Design team to discuss tree felling and proposed planting plans with Pt Chevalier residents. A third meeting was arranged to identify actual trees that residents wanted to retain.

Site tours

North and South – 9

Wiri – 0

Tunnel – 0

Methuen Lookout – 1

School presentations – 2

Precast Factory – 0

Presentations outside WCA – 3

6.2. General Communications Activity: Overview

October saw significant local and international interest in the project with the turnaround of the TBM underway. The demand for site tours continues to grow. The project continues to receive significant national and international media coverage, including:

Media releases: NZ Sheep help Alice’s turn

Media visits: TV3, TV1, Campbell Live, World Television, Fairfax Media, Construction News as part of Breakthrough Celebration

Published articles included an extensive feature in Infrastructure News and story in Construction News

Summary of external communications activity

TBM Breakthrough Celebration Event – Friday 17 October.

Campaign focussed on the TBM breakthrough and turnaround – new project signage detailing the turnaround process, souvenir project update released, Facebook, website updates

TBM Breakthrough celebration event on Friday 17 October



Key links www.facebook.com.alicetbm www.youtube.com/wcnow http://www.nzta.govt.nz/projects/waterviewconnection

6.3. Queries, Concerns and Complaints

Complaints: Four complaints were received in total

Two complaints were from Montrose Street, Pt Chev relating to night noise Relocation was

arranged for the time of the next significant works which was a good will gesture not part of the

SSNMP.

One complaint was received from Craddock Street Avondale. This area is directly over the tunnel

alignment and resident was receiving a low level hum

One complaint was received from resident on Methuen Road. The only works taking place were

within the tunnel 750m away. Vibrating roller was stopped and noise stopped as a result.

Compliments Four compliments were received this month

Two compliment regarding presentations given to external organisations

Two compliments regarding the excellent communication the Comms team gives to the community.

October Dashboard

http://www.facebook.com.alicetbm/

http://www.youtube.com/wcnow

http://www.nzta.govt.nz/projects/waterviewconnection



Queries, Complaint and Compliments Register

Case Title Case Type Origin Area Status Actual Start Date

Possible damage to property at 60 Hendon Ave Hendon Ave Concern Email South Active 1/10/2014

Concern regarding the faded lane dividing lines Waterview/SH16 Request Email North Resolved 2/10/2014

How is Alice kept on course? Request Email Project Wide Resolved 2/10/2014

Go Team Compliment! Compliment Email North Resolved 3/10/2014

Complaint re noise at night 2 - 6am - Montrose Street Montrose Street Complaint Phone North Resolved 6/10/2014

Noise at night - GNRI - R4P10 tabletop works - Montrose Street Montrose Street Complaint Phone North Resolved 6/10/2014

Compliment Ernie Pinches Bridge closure & overall communications with residents South Compliment Email North Resolved 7/10/2014

Request for info on Pt Chev Tree Management Pt Chev Request Email North Resolved 8/10/2014

Hirepool Waterblaster on trailer found outside Waterview Laundromat Waterview Concern Phone North Resolved 9/10/2014

Request for info on how the spoil will be moved from the north to Wiri Request Email Project Wide Resolved 11/10/2014

Request for Walkway to Eric Armishaw park proposed route Pt Chev Request Email North Resolved 12/10/2014

Concern re gate at boundary of property is blocked Whittle Place Concern Phone South Resolved 13/10/2014

Request to know where the souvenir plaque on Carrington Bridge is Pt Chev Request Phone North Resolved 14/10/2014

Request for info as to when Waterbank Cres park will open Waterbank Cres Request Email North Resolved 15/10/2014

RFI on Great North Road Interchange Waterview Request Email North Resolved 16/10/2014

Concern re weeds in Alan Wood Reserve Hendon Ave Concern Email South Resolved 17/10/2014

Notification of an intruder on Ernie Pinches Bridge Ernie Pinches St Concern Phone South Resolved 17/10/2014

Compliment received from Selwyn Village after presentation by Andrea W Pt Chev Compliment Email Project Wide Resolved 20/10/2014

Query regarding a low frequency hum heard from tunnel, is Alice working? Craddock St Concern Phone Tunnel Resolved 20/10/2014

What happens to Alice when she has finished her job? Request Email Project Wide Resolved 20/10/2014

Low frequency hum heard and vibrations felt at residents property. Will this continue when tunnel is in operation? Craddock St Complaint Phone Tunnel Resolved 22/10/2014

Is Alice working? Can hear a low frequency hum. Craddock St Request Phone Tunnel Resolved 22/10/2014

Comment on relocation Montrose St Comment Email North Resolved 28/10/2014

Thank you for presentation Waterview Compliment Email Project Wide Resolved 28/10/2014

Can hear a low frequency hum, are we working? - Hawea Street, Pt Chev Hawea St Request Phone North Resolved 28/10/2014

Concern re noise and vibration felt at residence at Craddock Street Craddock Street Concern Phone Tunnel Resolved 29/10/2014

Request for Plans of Waterview Playground Waterview Request Phone North Resolved 29/10/2014

Request for Tunnel Boring Machine information for Ngaiwi School Mangere Request Email Project Wide Resolved 29/10/2014



Request for info on the Project Request Email Project Wide Resolved 29/10/2014

Query re vibration felt at Craddock Street, what is it? Craddock St Request Phone Tunnel Resolved 30/10/2014

Request for Tunnel Boring Machine Poster Request Email Project Wide Resolved 30/10/2014

Noise disturbance heard from tunnel operations at Methuen Road Methuen Road Complaint Phone South Resolved 31/10/2014



Appendix A

Additional Consents Obtained

Additional consents obtained:

(New consents for the month shown in bold)

Consent Description Date Lodged Decision Date

R/LUC/2014/4244 Land use consent to construct and establish a new coastal pathway through the Howlett and Waterview Esplanade Reserves, Waterview

7th

October 2014

5th

November 2014

R/LUC/2014/3265 & R/REG/2014/3266

Land use and discharge permits to undertake enabling earthworks (preparatory only) to re-grade the Valonia Street carpark and change facility.

6th August 2014

1st September 2014

R/LUC/2014/926 Land use consent to remove native trees within an open space reserve

12th

Mar 2014 31st

Mar 2014

R/LUC/2011/4677 35 Valonia Street, New Windsor

Land use consent for temporary carpark and access way, associated earthworks and tree removal, and works within the dripline of protected trees.

16th

Dec 2011 20th

Jan 2012

ARC: 39983 35 Valonia Street, New Windsor

Landuse consent for earthworks. 16

th Dec 2011 20

th Jan 2012

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.

2nd

April 2012 30th

April 2012

ARC: 40316 - Stormwater ARC: 40318 - Industrial & Trade; ARC: 40319 - Air Discharge; and ARC:40627 – Landuse 53 Ormiston Road, East Tamaki

Integrated Land use consents (District & Regional) for the diversion and discharge of stormwater, the discharge of contaminants from an industrial or trade activity, the discharge of contaminants to air and parking and vehicular access infringements associated with the construction and operation of a Pre-Cast concrete facility at 53 Ormiston Road, East Tamaki.

16th

May 2012 15th

Aug 2012

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.

18th

June 2012 11th

July 2012

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.

11th

July 2012 8th

Aug 2012

ARC: 40097 and 40166 53 Ormiston Road, East Tamaki

Land use consents for land modification and land disturbance for construction of a Pre-Cast Facility.

16th

July 2012 13th

April 2012

R/LUC/2012/2568 Installation of above ground duct containing power, water and telecommunication services

Installation of an above ground duct containing power, water and telecommunication services to provide services to Construction Yard 11

10th

Aug 2012 29th

Aug 2012




R/LUC/2012/4601 Valonia Sportsfield Lights 35 Valonia Street, New Windsor

To construct a sportsfield lighting column, with 2000 watt medium beam lights mounted on a 16.5 metre high pole, at Valonia Sports Field (Field No.2). 12

th Dec 2012 8

th Feb 2013

R/LUC/2013/646 CY11 Carpark & Storage

CY11 Carpark Extension and Storage, including associated earthworks

25th

Feb 2013 22nd

April 2013

ARC: 41436 Stormwater CY11 Carpark & Storage

CY11 Carpark Extension – associated stormwater diversion

25th

Feb 2013 22nd

April 2013

ARC: 41437 Earthworks CY11 Carpark & Storage

CY11 Carpark Extension – associated earthworks

25th

Feb 2013 22nd

April 2013

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.

1st

March 2013 5th

March 2013

R/LUC/2013/3071 Resource Consent for Recovery of the Lost Core Barrel in Alan Wood Reserve

Resource Consent Approval for recovery of the lost core barrel in Alan Wood Reserve.

16th

Aug 2013 17th

Sept 2013

R/OPW/2013/3106 Outline Plan of Works SH20 Extension Dominion Rd to Maioro St

Approval for the Outline Plan of Works for the widening of the existing State Highway 20 northbound alignment between Dominion Road and Maioro Street. 20

th Aug 2013 13

th Sept 2013

R/LUC/2013/3363 Dominion Rd to Maioro St NES Soils Consent

Discretionary activity consent for soil disturbance pursuant to Regulation 11 of the National Environmental Standard for Assessing and Managing Effects on Human Health (NES (Soil)).

4th

Sept 2013 3rd

Oct 2013

R/LUC/2013/3513 Resource Consent for relocation of an existing gas regulator unit

Resource Consent Approval for the relocation of an existing gas regulator unit within a road reserve

12th

Sept 2013 11th

Oct 2013

R/LUC/2013/4460 Trimming of a tree and removal of another at Unitec

Resource Consent for the trimming of a tree and removal of another at the Unitec site at 1 Carrington Rd

30th

Oct 2013 20th

Nov 2013

R/LUC/2013/4534 Demolition of 27 Parr Rd South dwelling

Resource Consent Approval for the demolition of 27 Parr Rd South dwelling

7th

Nov 2013 20th

Nov 2013

R/OPW/2013/4455 Outline Plan of Works Southern Ventilation Building, Control Building and Stack (OPW2)

Approval for the Outline Plan of Works for the Southern Ventilation Building, Control Building and Stack (OPW2) – No requests for changes.

30th

Oct 2013 2nd

Dec 2013




Alteration to Designation: Retaining Wall 603 (Unitec)

Alteration to Designation: Retaining Wall 603 (Unitec) ‘A07-01E Motorway: Western Ring Route – Waterview Connection, Alteration to Designation A07-01 SH16 between Great North Road and St Lukes Interchange

12th

Nov2013 6th

Dec 2013

R/OPW/2014/9 Outline Plan of Works Northern Ventilation Building, Control Building and Stack (OPW1)

Approval for the Outline Plan of Works for the Northern Ventilation Building, Control Building and Stack (OPW1) – No requests for changes.

16th

Dec 2013 18

th February 2014

R/LUC/2014/926 and R/REG/2014/929 Harbutt Reserve Tree Clearances

Approval for clearing and pruning trees within Harbutt Reserve for the purposes of installing Settlement Monitoring Rods.

11th

March 2014

31st

March 2014

NZHPT Authorities obtained:

Heritage New Zealand Authority – Howlett/Waterview Esplanade walkway

General Heritage New Zealand Authority for earthworks associated with the construction of Howlett/Waterview Esplanade walkway (Auth Number 2015/396)

Archaeological Authority required in accordance with Section 48 of the Heritage New Zealand Act

NZHPT Authority Southern Area Enabling Works

General NZHPT Authority for Earthworks in association with Southern Area Enabling Works

Archaeological Authority required in accordance with Section 12 of the Historic Places Act.

NZHPT Authority Southern Area Main Works

General NZHPT Authority for Earthworks in association with Southern Area Main Works


NZHPT Authority Northern Portal Works

General HPT Authority for Earthworks in association with Northern Portal Works


NZHPT Authority Great North Interchange Works

General HPT Authority for Earthworks in association with Great North Interchange Works


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