Chemical Treatment Management Plan

Auckland City Rail Link In association with:

CHEMICAL TREATMENT MANAGEMENT PLAN Connectus Document Ref: 025-Y031-2719 Revision: 04 21st March 2016

COMMERCIAL IN CONFIDENCE

CHEMICAL TREATMENT MANAGEMENT PLAN Doc No: 025-Y031-2719 REVISION: 04 DATE 21-March-2016

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CONNECTUS PROJECT NO. 2719 CITY RAIL LINK LIMITED

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CHEMICAL TREATMENT MANAGEMENT PLAN Doc No: 025-Y031-2719 REVISION: 04 DATE 21-March-2016

DOCUMENT INFORMATION Organisation:

Connectus

Document Title:

Chemical Treatment Management Plan

Connectus Document Number

025-Y031-2719

Client:

City Rail Link Limited

Project:

CRL Enabling Works Contract 2

Location:

Auckland CBD

Project No:

2719

REVISION HISTORY Rev

Date

Details

Author

Reviewer

Approver

1

16/10/15

1ST Draft for Connectus Review

S.Lindberg

J. Hughes

01

21/10/15

2nd Draft sent to AT as Rev 01

S.Lindberg

J. Hughes

02

30/10/15

Draft for Consultation

S.Lindberg

F. Davies

03

17/02/16

Draft Incorporating CLG comments and updates methodology

S.Lindberg

C. Hind

Final for lodgement incorporating AC comments and change to water treatment methodology

S.Lindberg

04

05

21/03/16

15/08/2017

Annual Review – No Change

J. Huges C Hind

J. Huges J. Surphlis

C. Powell

This document remains the property of Connectus. Its contents are confidential and shall not be reproduced, destroyed or given away without the express, written permission of Connects. The electronic version of this document in iTWOcx Database on designated server(s) is the Master Copy and is a controlled document. Unless specifically noted thereon, other copies of this document are uncontrolled.

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Table of Contents 1.

INTRODUCTION ........................................................................................................................ 6 1.1

Consent Conditions ............................................................................................................. 6

1.1.1 2.

3.

4.

Sustainability ............................................................................................................... 10

SELECTION OF TREATMENT SYSTEM.................................................................................. 10 2.2

Phase 2 Trench Excavation and Backfiling Treatment System Overview ............................ 10

2.3

Selection of Dosing Treatment System .............................................................................. 11

TREATMENT SYSTEM DETAILS............................................................................................. 12 3.1

Mixing Header Tank........................................................................................................... 12

3.2

Influent Quality Monitoring ................................................................................................. 12

3.3

Dosing System .................................................................................................................. 13

3.3.1

Flocculant Testing........................................................................................................ 13

3.3.2

Dosing Performance .................................................................................................... 14

3.4

Sediment Removal Tanks (Siltbusters Clarifiers) ................................................................ 15

3.5

Effluent Quality Monitoring ................................................................................................. 15

3.5.1

Discharge Quality Targets............................................................................................ 15

3.5.2

Effluent Quality Monitoring ........................................................................................... 16

3.5.3

Monitoring Reports....................................................................................................... 17

STORAGE, MONITORING AND MAINTENANCE..................................................................... 17 4.1

Storage of Water TREATMENT pLANT Additives .............................................................. 17

4.2

Monitoring and Maintenance .............................................................................................. 18

5.

SPILL CONTINGENCY PLAN................................................................................................... 18

6.

RESPONSIBILTIES FOR OPERATION AND MAINTENANCE.................................................. 18

APPENDIX A: CHEMICAL TREATMENT SYSTEM MONITORING AND MAINTENANCE RECORD 20 APPENDIX B: FLOCCULANT TESTING.......................................................................................... 21 APPENDIX C: HALOKLEAR DPS SYSTEM INFORMATION ........................................................... 47 APPENDIX d: ELECTRONIC DOSING SYSTEM INFORMATION.................................................... 48 APPENDIX E: MATERIAL SAFETY DATA SHEETS ........................................................................ 49 APPENDIX F: ISCA REQUIREMENTS ............................................................................................ 50 APPENDIX G: RECORD OF CLG COMMENTS .............................................................................. 51

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1.

INTRODUCTION

Sediment laden water from the Project construction works during the trenching and rail tunnel construction phases will be treated using settlement devices.

Manufacturer’s information suggests that settlement devices will not typically remove very fine particles such as very fine silt or clay without chemical additives, hence the need for a dosing system which will add flocculants to the water in order to achieve the required discharge quality.

Adding coagulant and flocculants to the incoming flows will help to achieve the effluent quality goals of the project. The coagulants destabilise colloidal particles and very fine suspended solids so that they begin to agglomerate. The flocculant neutralises the electrical forces between the sediment particles, thus accelerating coagulation and rate of sedimentation within the unit. pH adjusting chemicals will be used to bring the pH of the effluent to an acceptable range.

The design, operation and maintenance of the proposed water treatment system are described in this Chemical Treatment Management Plan (CTMP). Importantly, the following is noted: •

The effluent quality goal was established in the Water Quality Assessment prepared by Golder Associates (NZ) Limited, dated December 2014. This identifies a minimum water clarity for all discharges of 10cm or greater measured with a black disk (supported by weekly, concentrations TSS to demonstrate <50g/m3 for 95 % of the time), pH between 5 and 9, and no visible TPH.

•

Bench testing has been undertaken to evaluate the effectiveness of the proposed flocculant chemicals, however the exact requirements for coagulation and flocculation will be determined on site following initial establishment and testing of the effluent from the Siltbuster units.

•

Non-chemical flocculants will be used unless the required effluent quality is not being met or the costs are prohibitive.

Any change to this CTMP will be submitted to the Council (Team Leader Central Monitoring) for certification and no activity reliant upon a change to the CTMP will be undertaken until the change has been certified.

1.1

CONSENT CONDITIONS

Table 1 outlines the relevant condition from land use consent R/REG/2014/4793 and how this is addressed within the CTMP.

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Table 1 CTMP condition from land use consent R/REG/2014/4793 and the relevant sections of this document

Condition Number Chemical Treatment Management Plan ("CTMP")

50

At least 20 working days prior to the commencement of construction, a CTMP which confirms the measures that will be taken to ensure that construction of the Project or Project Stage will be generally consistent with the Water Quality Assessment and the Industrial and Trade Activities Assessment prepared by Golder Associates (NZ) Limited, both dated December 2014 shall be submitted to Council (Team Leader Central Monitoring) for certification.

51

The Consent Holder shall request the Council’s (Team Leader Central Monitoring) determination as to whether the CTMP can be certified, in writing, within 10 working days of receipt of the CTMP.

52

53

99

CONNECTUS PROJECT NO. 2719 CITY RAIL LINK LIMITED

Condition

The CTMP shall include, but not be limited to, the following matters: •

Specific design details of the chemical treatment system based on a batch dosing methodology for the site’s settlement tanks, including the potential for use of nonchemical flocculants (e.g. chitin based flocculants such as Haloklear);

•

Monitoring, maintenance (including post-storm) and contingency programme (including a record sheet);

•

Details of optimum dosage (including assumptions);

•

Results of initial chemical treatment trial;

•

A spill contingency plan; and

•

Details of the person or bodies that will hold responsibility for the long-term operation and maintenance of the chemical treatment system and the organisational structure which will support this system.

Where Addressed in 3.5.1

All sections Emergency Spill Response Plan (Appendix T to Project CEMP)

Any change to the CTMP shall be submitted to the Council (Team Leader Central Monitoring) for certification. No activity reliant upon a change to the CTMP can be undertaken until the change has been certified. The Consent Holder shall request the Council’s (Team Leader Central Monitoring) determination as to whether the proposed change can be certified, in writing, within 10 working days of submission of the change.

1

The Consent Holder shall ensure that the following structural controls are constructed for the following catchment areas and design requirements and they are completed prior to discharges commencing from the site.

Section 3.1 and 4.4 of the Project Erosion Sediment and Control Plan (ESCP), Appendix K of the CEMP (Industrial Trade Activities Environmental Management Plan)

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Condition Number 100

Condition

Where Addressed in

In the event that any minor modifications to the structural controls system are required, the following information shall be provided to Council:

a. Plans and drawings outlining the details of the modifications; and b. Supporting information that details how the proposal does not affect the capacity or performance of

Section 3.1 of the ESCP.

stormwater management system.

Discharge Monitoring

101

Within 30 days of the installation of the water treatment system, and prior to operation, a discharge monitoring programme, to assess the ongoing adequacy of all management practices, shall be developed and submitted to the Council (Team Leader Central Monitoring) for certification. The monitoring programme shall include, but not be limited to: a. sampling location for final discharge from the site(s); b. sampling locations on site (i.e. swale inlets, outlets etc); c. methods and procedures for discharge sampling on a quarterly basis; d. monitoring parameters for analysis, which shall include: Daily · Turbidity (NTU) · pH Weekly · Total Suspended Solids mg/L · Copper (total) mg/L · Zinc (total) mg/L · Lead (total) mg/L · Total Petroleum Hydrocarbons mg/L e. identified trigger levels for each of the above parameters. These trigger levels shall be developed with reference to the ANZECC Guidelines for water qualitywhere applicable; and

3.5

f. the methods and procedures for investigating and reporting stormwater discharge monitoring results to the Council (Team Leader Central Monitoring).

102

CONNECTUS PROJECT NO. 2719 CITY RAIL LINK LIMITED

The discharge monitoring programme shall be implemented upon completion of works set out in Condition 99.

3.5

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Condition Number Reporting

CONNECTUS PROJECT NO. 2719 CITY RAIL LINK LIMITED

Condition

Where Addressed in

103

Within five working days of receipt of sample results showing contaminants exceeding the agreed trigger levels (Condition 101(e)): a. an investigation shall be undertaken to determine why exceedances were detected and to identify any additional source controls or treatment required; and b. the results of the investigation shall be reported to the Council (Team Leader Central Monitoring).

3.5

104

Within eight weeks following the start of the monitoring required by Conditions 101 and 102, a Monitoring report shall be submitted to the Council (Team Leader Central Monitoring). The monitoring report shall include, but not be limited to, the following: a. a summary of the monitoring results to date; b. an interpretation of those results and suggestions for improvement to the site operations; c. a programme for ongoing monitoring including the reporting of results; and d. a programme for the ongoing maintenance of the discharge water management and treatment system.

3.5

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1.1.1

Sustainability

AT is seeking an Infrastructure Sustainability Council of Australia (ISCA) Infrastructure Sustainability (IS) rating for the Project. Full details are included in the Projectâ&#x20AC;&#x2122;s Sustainability Management Plan.

Project sustainability requirements that relate directly to this CTMP are included in Appendix F.

2.

SELECTION OF TREATMENT SYSTEM

2.1 Phase 1 Trench Excavation During the trench excavation phase, excavation occurs from the construction deck and spoil is loaded onto trucks for disposal offsite. Water entering the trench will have to be pumped to a water treatment device(s) located on the construction deck. The approach will be to use small water treatment devices (settlement tanks / Siltbuster HB50s or similar) to treat water pumped out of the excavations.

Flocculants will be used if necessary to meet the effluent quality goal. This would involve hand dosing or the use of Haloklear manifold.

2.2

PHASE 2 TRENCH EXCAVATION AND BACKFILING TREATMENT SYSTEM OVERVIEW

As the work progresses, and individual excavations become larger and more connected, water can be drained towards a water treatment plant.

The water treatment plant (WTP) will utilise a treatment train approach consisting of the following components (Figure 1): 1. Mixing Header Tank; 2. Influent Quality Monitoring device; 3. Dosing system; 4. Sediment Removal Tanks (Siltbuster Clarifiers); 5. Effluent Quality Monitoring device; 6. Treated water storage/reuse; and 7. Discharge to stormwater network.

Figure 1: Water Treatment Plant Overview CONNECTUS PROJECT NO. 2719 CITY RAIL LINK LIMITED

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2.3

SELECTION OF DOSING TREATMENT SYSTEM

A number of different dosing treatment systems were assessed, including using both flocculants with biodegradable and non-biodegradable chemical constituents. The main advantages and disadvantages of the systems are summarised in Table 2.

Table 2 Comparison of different chemical treatments systems

Option 1) HB50 Siltbuster with dosing via Haloklear Sockmaster Manifold

CONNECTUS PROJECT NO. 2719 CITY RAIL LINK LIMITED

Advantages • •

Cost effective dosing system

•

No moving parts in dosing system – low maintenance

•

No hazardous liquid chemicals to spill (gel contained in socks)

• •

Simple to operate

•

“Non-Chemical” biodegradable flocculent does not increase risk to environment if overdosing occurs.

•

Does not rely on accurate dosing for effectiveness / safety

Easy and fast to mobilise (1 day)

“Non-Chemical” Council and specifications

Disadvantages •

Accuracy of dosing not guaranteed – tends towards overdosing in low flow situations.

flocculent meets Mana Whenua

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2) HB50 Siltbuster with active dosing system – Halokear (“nonchemical”)

3) HB50 Siltbuster with active dosing system – Chemical (PAC, PAMs etc)

•

“Non-Chemical” Council and specifications

flocculent meets Mana Whenua

•

Requires higher level of technical expertise to operate, and consistent monitoring

•

“Non-Chemical” biodegradable flocculent does not increase risk to environment if overdosing occurs.

•

Requires additional pumps and sensors.

•

High accuracy of dosing extracts best performance from the dosing regime

•

High accuracy of dosing extracts best performance from the dosing regimen.

•

Requires higher level of technical expertise to operate, and consistent monitoring

•

Requires additional pumps and sensors.

•

Overdosing of chemical due to malfunction or mismanagement could have more significant effects on the receiving environment.

•

Storage, handling and use of chemicals requires HSNO compliance and poses greatest risk in the event of a spill.

•

Inconsistent with Whenua expectations.

power,

power,

Mana

Based on the comparison above, the Haloklear Dual Polymer System (DPS) is proposed for primary use on the Project, in conjunction with an active electronic dosing system similar to the RST Environmental Solutions “Electronic Dosing Device” (Appendix D of this CTMP). The automatic dosing device will house the relevant additives in a series of chambers (refer to Section 3.3 of this CTMP for further details). If the Haloklear system proves to be less effective than anticipated, then the alternative chemical-based system will be implemented. Both types of treatment chemicals have had bench testing undertaken (results in Appendix B of this CTMP).

3.

3.1

TREATMENT SYSTEM DETAILS MIXING HEADER TANK

The first stage in the treatment train is a mixing/header tank. The mixing facility serves to homogenise the influent water. Rapid changes of influent water quality are evened out so that gradual changes in water quality will be fed to the rest of the treatment train. This approach reduces the frequency and magnitude of dosing adjustments. In addition, during very low flows, the tank may be used to store water for batch processing.

3.2

INFLUENT QUALITY MONITORING

After the mixing tank, inline pH and Total Suspended Solids meters will gather continuous influent water quality data which will be fed to the pH and flocculent dosing system.

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3.3

DOSING SYSTEM

The dosing point will be located near the inlet into the Siltbuster unit. This will ensure the Haloklear is sufficiently mixed by turbulent flows into the unit. Figure 1 shows a schematic of the treatment process.

The dosing system will consist of an automatic dosing device with a series of chambers containing the relevant additives. It is proposed to use Haloklear, which is a natural flocculant derived from Chitin.

Chitin is a natural biopolymer found in crustacean shells. It replaces the use of chemical based flocculants which can have an adverse effect on the surrounding environment if left untreated, and is biodegradable. The Haloklear DPS dosing system utilises two different components - known as LBP2101 and Liquifloc. Both are supplied in liquid form. Refer Appendix C of this CTMP for further information on Haloklear.

3.3.1

Flocculant Testing

Jar testing of the Haloklear flocculant mixtures on soil samples from adjacent boreholes was undertaken

by RST Environmental Solutions Ltd (Appendix B of this CTMP). Testing compared the DPS (Liquid floc, and natural biopolymer) at different dosage levels, with a P50 polymer (blended biopolymer and polyaluminum chloride) and straight polyaluminum chloride (PAC). The results are provided in Appendix B of this CTMP. The results using the Haloklear DPS showed acceptable effluent clarity (NTU) levels for all samples.

The testing found that the ideal dose for all samples was between 100 and 200ppm of each polymer for the soil concentrations of ~15g/L. Table 3 summarises the types of soil material tested, and results. The influent turbidity values ranged from 100 to over 1000. The best-case resultant turbidity for each of the seven samples ranged from around 6 to 50. In terms of clarity measures, while these were not specifically assessed, it can be seen from the photographic laboratory results (Appendix B of this CTMP) that at least 100mm clarity can be achieved for all samples (the sample bottles are approximately 100mm wide).

Table 3: Summary of flocculant testing (Haloklear)

Sample #

BH1

1

116

2

116

3

116

4

116

ECBF

5

116

ECBF

6

113

CONNECTUS PROJECT NO. 2719 CITY RAIL LINK LIMITED

Soil type

Fill

Geological Description Non-Engineered Fill

Influent NTU

Best effluent Meets 10cm clarity?

NTU result2

157

8.6

Y

Tauranga Group Completely weathered ASH and Lapilli TUFF, indistinctly blended

96

6.6

Y

Tauranga Group Alluvium

623

22.2

Y

Completely weathered, grey, fine SANDSTONE, extremely weak.

916

14.5

Y

Unweathered, grey, fine SANDSTONE, weak.

249

60

Y

>1000

44.7

Y

Tauranga Group ALLUVIUM (Reworked ECBF)

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7

113

ECBF

Highly weathered, dark grey fine-grained SANDSTONE, extremely weak

576

29.7

Y

1 BH = Borehole number (from geotechnical investigations) 2 Best result from all natural DPS flocculants / polymers

The results indicate that higher dosing rates improve the effectiveness of settling and the biodegradable Haloklear DPS approach is expected to achieve the 10cm clarity goal. Samples of total suspended solids were not taken but the water quality treatment goal for TSS will be confirmed during operation.

Due to the electronic dosing device, the likelihood of over dosing is negligible. The polymers are biodegradable, and therefore the risk to the receiving environment of overdoing is considered negligible.

As a precaution, a Haloklear Residual Biopolymer Test Kit can be used to detect the presence of free residual biopolymer before it leaves the site. Typically, testing for residual chitosan has shown levels below 0.1mg/L (pers. communication with RST Environmental).

These results will be used to calibrate the electronic dosing device when the treatment plant first becomes operational. Monitoring results will indicate whether optimum dosing is being used.

Chemical flocculants were also tested (Poly Aluminum chloride) and Crystafloc B610H and were found to be equality effective. The results are also included within Appendix B of this CTMP. 3.3.2

Dosing Performance

If for some reason the effluent goals are not being met (despite being retreatment) the following steps will be taken: a. Halting of all pumping from the excavation and discharges from site. b. Assessment of system for blockages/clogging and make changes to DPS components as required (replace flocculants). c.

Re-test the effluent.

d. If the clarity is still unacceptable, then revert to a manual dosing system â&#x20AC;&#x201C; with starting points of between 100 and 200ppm (as per the Jar Test). e. Re-test the effluent and only release if less than the clarity goal. f.

Recalibrate automatic dosing device.

If results are still unacceptable, then the alternative flocculants will be investigated.

At times it may be impractical, unsafe or environmentally unsound to stop the dewatering system immediately. The Water Quality Assessment prepared by Golder (2014) identifies that the Total Suspended Solids water quality goal should be met at least 95% of the time. In these instances, discharge which does not meet this water quality goal may continue until a safe hold point in the construction program is reached. Where the effect of this discharge to the Waitemata Harbour is more than minor, an environmental incident investigation will be carried out to identify causes and prevent recurrence.

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3.4

SEDIMENT REMOVAL TANKS (SILTBUSTERS CLARIFIERS)

The treatment system has been designed around a specific type of sediment removal tanks known as ‘Siltbusters’. These tanks use lamella clarifiers to improve sediment settling.

3.5

EFFLUENT QUALITY MONITORING

The purpose of the effluent quality monitoring is to confirm the water being discharged meets the required discharge quality targets.

3.5.1

Discharge Quality Targets

Contaminants in the influent water quality will be determined by: •

The quality of the groundwater intercepted by the trench/tunnel

•

Rainwater falling in the trench and picking up contaminants as it travels to the sump. The type and concentration of contaminants will be dependent on the nature of the geology, spoil or fill material the water comes into contact with. It should be noted that the sides of the trench will be progressively stabilised.

•

The small volumes of stormwater water entering the trench either directly or pumped from stockpile bunds.

Taking this into account, the water quality classifications were established in the Water Quality Assessment by Golder (2014) and by Condition 89 of discharge permit R/REG/2014/5435 and are as follows: 1. Good (able to be discharged directly to the local stormwater network): •

water clarity of 10cm or greater measured with a black disk (supported by weekly samples of TSS to demonstrate <50g/m3.

•

a pH between 5 and 9,

•

no visible TPH (sheen or odour)

2. Moderate •

Does not meet the above criteria and will be retreated

3. Poor (collected in water tankers and removed off-site for treatment and discharge): •

Water that is not able to be treated on-site

•

Water that cannot demonstrate compliance with 50 times the Australian and New Zealand Environment Conservation Council (ANZECC) Guidelines for Fresh and Marine Water Quality (2000) for the protection of 95 percent of marine water species.

•

The key contaminants to be monitored include Copper (total) mg/L, Zinc (total) mg/L, Lead (total) mg/L, and Total Petroleum Hydrocarbons mg/L. Table 4 summarises the ANZECC trigger values.

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Table 4: ANZECC (2000) Trigger Values for copper, lead and zinc

Chemical

95% Trigger Value for Marine Water (ug/L)

50 times 95% Trigger Value for Marine Water (ug/L)

Copper

1.3

65

Zinc

15

750

Lead

4.4

220

The trigger values are not designed to be applied as discharge criteria, rather used to assess risk to identified receiving environment values. Where the water samples meet the trigger values the risk to the receiving environment can be considered low, while exceedances indicate a need to further investigate the cause and risk.

A monitoring report will be prepared 8 weeks after the WTP has been in operation and will include monitoring results and a discussion of the results against the above trigger values. The results will help determine whether further consideration of the values of the receiving environment and the risk to these is necessary (i.e. if the trigger levels are being exceeded). The monitoring report will consider in more detail the ongoing monitoring regime dependent on the results of the monitoring (refer section 3.5.2 of this CTMP for further discussion).

3.5.2

Effluent Quality Monitoring

An effluent quality monitoring system will be installed after the Lamella Clarifiers to determine if the treated water meets the required discharge standards. An automatic system will be used to monitor TSS and pH. A recirculation valve will be in operation to send water back that does not meet the required standards (TSS of <50gm3 and pH of 5-7) to the start of the treatment process for retreatment.

Within 30 days of the installation of the water treatment system, and prior to operation, a discharge monitoring programme, to assess the ongoing adequacy of all management practices, shall be developed and submitted to AC (Team Leader Central Monitoring) for certification. The programme will be based on consent condition 101 (refer Table 1 of this CTMP). However, in accordance with condition 104, an initial monitoring report will discuss and refine the ongoing monitoring programme based on initial monitoring results (refer 3.5.3 of this CTMP).

Effluent quality monitoring will begin as soon as the WTP is operational.

Attached to this CTMP is an example of a record sheet (Appendix A) which will be used daily by site staff to record the following information: •

Visual Check – check the Siltbuster inflow rate (m3/hr), depth within tank, influent clarity, presence/absence visible TPH (conspicuous oil or grease film, sheen or odour), and dosing system operation.

•

Carry out a water clarity test of effluent: 10cm or greater measured with a black disk

•

Check pH results from data logger to confirm pH is between 5 and 9

•

Record any notes for maintenance or additional information (e.g. ordering additional flocculant supplies).

In addition, weekly samples of effluent will be taken from the water reuse storage tank (sample location for final discharge from the site), sent to an accredited laboratory and tested for: •

Total Suspended Solids

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•

Copper (total) mg/L

•

Zinc (total) mg/L

•

Lead (total) mg/L

•

Total Petroleum Hydrocarbons mg/L

The results will be reported as discussed below.

3.5.3

Monitoring Reports

Monitoring reports will be prepared and forwarded to AC (Team Leader Central Monitoring) as follows: a. Within eight weeks following the start of the monitoring (initial monitoring report) b. Within five working days of receipt of sample results showing contaminants exceeding the agreed trigger levels c . Ongoing at a frequency agreed Initial Monitoring Report The initial monitoring report will include: •

a summary of the monitoring results to date;

•

an interpretation of those results and suggestions for improvement to the site operations were required;

•

a programme for ongoing monitoring including the reporting of results; and

•

water treatment plant maintenance program

Non-Conforming Result Report •

Within five working days of receipt of sample results showing contaminants exceeding the agreed trigger levels an investigation shall be undertaken to determine why exceedances were detected and to identify any additional source controls or treatment required.

•

The results of this investigation will be sent in a report format to AC (Team Leader Central Monitoring).

Regular Monitoring Reports •

The frequency and content of the regular monitoring reports will be determined in the initial monitoring report.

4. STORAGE, MONITORING AND MAINTENANCE 4.1

STORAGE OF WATER TREATMENT PLANT ADDITIVES

The water treatment additives will be stored in CSA 4 and active and frequent monitoring by assigned personnel will allow for early identification of any flocculant overdose or spills.

Where the manual addition of flocculants may be required during phase 1 of the trench excavation, (approximately 3 months duration) this will only be undertaken by appropriately trained staff.

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During phase 2 of the trench excavation (approximately 17 months duration) there is little risk of overdosing occurring due to the automated dosing system. Environmental harm from an overdose or spill is minimised due to a bio-degradable flocculant being used.

Chemicals will be managed in accordance with Connectus 020-E012-100 Hazardous Substances & Dangerous Goods Procedure. A 020-F028-100 Hazardous Substances & Dangerous Goods Register will be developed prior to the chemicals coming to site.

Active and frequent monitoring by assigned personnel allows for early identification of any leakages or overdosing during rainfall events. Therefore, action can be taken quickly to mitigate any spills or changes in water quality when discharging back into the drainage systems.

4.2

MONITORING AND MAINTENANCE

The water treatment plant and equipment will be maintained in accordance with the manufacturerâ&#x20AC;&#x2122;s instructions and in accordance with the Inspection and Test Plan that will be developed for operation of the WTP. In addition to regular maintenance the performance of the plant will be verified daily using the monitoring record sheet contained in Appendix A of this CTMP.

5. SPILL CONTINGENCY PLAN Both substances used within the DPS system are supplied in liquid form. A Project Emergency Spill Response Plan (ESRP) has been developed to set out spill management procedures for the duration of the works. The ESRP is appended to the Project CEMP as Appendix T.

6. RESPONSIBILTIES FOR OPERATION AND MAINTENANCE This section provides details of the person or bodies that will hold responsibility for the long- t e r m operation and maintenance of the chemical treatment system and the organisational structure which will support this system.

As per the Project CEMP (Section 4.1.2), the Cut and Cover Construction Manager and the Environment and Sustainability Manager (ESM) will be responsible for implementation of the CTMP, including the operation and maintenance of the treatment system (Table 5).

Table 5 Roles responsible for implementation of the CTMP

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Role

Role Responsibility

Cut and Cover Construction Manager

•

Implement environmental protection measures in accordance with the contract and the CEMP and sub-plans including CTMP; and

•

Ensure all workers and others (e.g. subcontractors and suppliers) comply with environmental operating procedures and community relations protocols.

•

Manages and co-ordinates site monitoring and maintains and submits relevant reporting and records to the Auckland Council and Auckland Transport, as required;

•

Undertakes regular site inspections and audits to ensure compliance with the CEMP and sub-plans (including this CTMP) and consent conditions;

•

Input records of all environmental monitoring results to Fulcrum in relation to this CTMP;

• • •

Trains staff in site specific environmental procedures;

Environment and Sustainability Manager (ESM)

CONNECTUS PROJECT NO. 2719 CITY RAIL LINK LIMITED

Coordinates environmental emergency responses; and Manages maintenance and monitoring of the effectiveness of erosion and sediment controls, stormwater and water treatment devices and other control devices.

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APPENDIX A: CHEMICAL TREATMENT SYSTEM MONITORING AND MAINTENANCE RECORD Site: Unit No. Date/TIME

CONNECTUS PROJECT NO. 2719 CITY RAIL LINK LIMITED

Month: Visual Check Presence/Absence conspicuous oil grease film, sheen odour)

Maintenance Person: of or or

Flocculant Volume Added (L)

Effluent Clarity (Secchi)

pH

Notes on maintenance required or additional information

Initial

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APPENDIX B: FLOCCULANT TESTING

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CONNECTUS SITE AND GROUND WATER TREATMENT FOR CRL ENABLING WORKS CONTRACT 2 SELF SETTLING AND CHEMICALLY ASSISTED SEDIMENTATION TESTS Settling Analysis on Soil Core Samples Provided by Aecom (August 2015)

Prepared by: Danny Williams IXOM â&#x20AC;&#x201C; Water Chemicals

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Introduction Sediment control from earthworks and infrastructure development sites has an ongoing focus as a potential source of environmental pollution and a risk to New Zealand native species and habitats in waterways.

Particle size, soil chemistry and rainfall intensity are the main factors influencing the settling rate of suspended particles in a rain event.

Bench testing of soil types likely to be encountered from sites and highlighting potential problematic soil types has been beneficial in alerting consent issuing authorities to aid in enforcing guidelines or regulations to minimise and for the most part eliminate sediment effects on ecosystems and waterways around New Zealand.

When required, the use of chemicals to assist coagulation and/or flocculation, and subsequently reduce settled water turbidity exiting a sediment pond or treatment process has shown to be very beneficial in reducing or eliminating effects on receiving waters.

The aim of the tests performed on the samples provided was to determine the settling rates of suspended solids mobilised by rainfall events and or ground water infiltration into site, and if deemed necessary the optimum treatment chemical(s) and approximate dose rate(s) to effectively settle and compact the colloidal or very fine sediment in a retention pond or suitably sized water treatment process (such as siltbuster or lamellar type device). References in this report will discuss the siltbuster or Lamellar device as the water treatment plant or “WTP”.

Coagulation and/or flocculation, settled water turbidity and pH was observed and recorded for each jar test and the results used to determine the optimum chemical and approximate dose rate (if any) for each sample provided.

Methodology Chemically Assisted Settling Tests Each settling test was performed on 500mL samples of the suspension as used for the unassisted settling tests.

Each sample was dosed with chemical, then agitated in a “Boltac” coagulation simulator for 10 seconds at 250rpm (to imitate chemical addition, followed by 1 minute at 100rpm (subsequent mixing in the front end of the settling pond or treatment plant/process), followed by 5 minutes at 30rpm (slow mixing to imitate slow agitation and minimal mixing in the front end of sediment pond or inside treatment plant settling zone), followed by settling for 10 minutes before sampling from the surface of the treated sample.

In an actual WTP we would believe this type of test regime to be indicative of similar scenario and if the WTP is sized appropriately there is likely to be considerably more settling time. However, if there is the potential for significant build-up of solids or reduced settling time in the WTP then this type of test regime will be more likely indicative of actual settling achieved in practice.

To allow distinct measureable doses to be added to the bench tests it is generally accepted that the concentrated chemicals be diluted before addition.

The dilution of chemicals used for the bench testing was based on the following detail as normally specified as water/waste water industry standards…

24 mL of LiquiPAC (Poly aluminium chloride 33.7% or 10.1% as Al2O3) as supplied was diluted with 1L of tap water to give 1% solution as PAC.

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10mL of Crystalfloc L3RC (PolyDADMAC 40% solution) as supplied was diluted with 1L of tap water to give 1% solution. The powder version of PolyDADMAC is called Crystalfloc B3H and has >90% active or approximately double the active strength of the liquid version.

Given the above dilutions the samples were tested on the basis that 1mL of the 1% solutions per litre of testing sample/suspension is equivalent to 10 parts per million (ppm or g/m3).

1g of powder Crystalfloc B610H was diluted into 1L of water and this diluted solution was used in the bench tests, 1mL of this solution dosed into 1L of sample is equivalent to 1ppm.

Summary The samples provided had in general very mobile clay or very fine colloidal particles which remained in suspension long enough to potentially create settling issues in a WTP. Of note the pictures taken of bench tests shows the volume of settled material and the variability thereof between each sample.

Recommendations Summary The samples provided reacted very well with what we would consider to be low range dose rates of LiquiPAC or Crystalfloc L3RC (or B3H).

Three of the samples (samples 1, 2, 5) settled relatively quickly without treatment and had settled water turbidity in below 50NTU after 2 hours of settling.

Two of the samples (samples 4 and 7) settled slowly and had settled water turbidity of approximately 100NTU after 24 hours.

The last two samples (samples 3 and 6) settled very slowly and still had settled water in excess of 100NTU after 48 hours of settling.

Given the dose rates required were relatively low, we suggest that dosing LiquiPAC would be easy to control, the same system could also be used to dose a diluted solution of Crystalfloc L3RC. A smaller and or different type of dosing pump would be required for dosing neat L3RC (such as a peristaltic or piston type pump).

We would suggest that polymer dosing is installed on the plant to allow for its use as/when required

Dosing Discussions/Options L3RC is relatively viscous and this is the reason for using a different dosing pump, this may make control slightly more difficult as dose rate volumes vs flow rate will be low.

LiquiPAC gave consistently lower settled water turbidity and performed well on the two â&#x20AC;&#x153;difficult to treat samplesâ&#x20AC;? (sample 3 and 6) in particular when combined with dosing with Crystalfloc B610H polymer.

Sample 5 settled very quickly as was predominantly fine sandstone and may not require any treatment on its own, however as there is likely to be mixture of soils in the treatment plant at any given time we would suggest that dosing is maintained throughout the project. Furthermore, we suggest extra focus on the WTP when it is noted that the alluvium materials are being treated as this is when polymer dosing will definitely be required at varying rates to maintain control of the treatment plant.

It would also be strongly recommended that further testing is done on set up of the plant and throughout the project, Ixom can provide the bench testing resources as required.

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Table of source sample make up

BH

Depth

RL (Approx)

Genre

Geological Descriptio

Soil Properties

1

116

<1m

18.9

Fill

Non- Engineered Fill

SILT with some clay and minor fine sand.

Light Orange a very light grey mottled, stiff, moist

2

116

1.2-3

17.9

Taurang a Group

Completely seather ASH and Lapilli TUFF, indistinctly blended

1.4m: SILT with minor fine sand and clay and trace organics, very light grey with minor orange mottling, stiff, moist.

Organics are small black flecks typically 0.5mm in size, and partially decomposed roots. With minor ash, and trace medium gravel appearing vesicular and up to 12 mm in size.

3

116

3.24.75

15.4

Taurang a Group

Alluvium

3.2m: Moderately thinly interbedded light grey to grey SILT and fine SAND, moist.

Firm to stiff silt with trace clay and organics.

Loose, uniformly graded sand with trace silt and organics. Organics are small black flecks generally 0.5mm in size, at the top of silt beds.

4

116

5.5

13.9

ECBF

Completely weathered, grey, fine SANDSTONE, extremely weak.

Silty fine SAND with trace to some clay, grey, low plasticity, moist, loose. With trace fine gravel.

5

116

18.25

1.1

ECBF

Unweathered, grey, fine SANDSTONE, weak. Trace fine green, gravel, elongate, and medium sand, white, probably siliceous.

Typically, massive with minor zones, thinly bedded.

6

113

5.9

8.07*

Tauranga Group

ALLUVIUM (Reworked ECBF)

Clay with trace silt and organics, stiff

7

113

6.8

7.17*

ECBF

Highly weathered, dark grey finegrained SANDSTONE extremely weak

Fine SAND with trace silt, dark grey, dense, moist, uniformly graded.

*Note that these are samples from two separate boreholes. Ordering the data by RL gives the false impression that there is a layer of Tauranga Group Aluvium beneath the first layer of ECBF.

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Recommendations Sample 1: Non-Engineered Fill This sample had a relatively high mobile colloidal component which remained in suspension long enough to be an issue in a WTP. This sample also had a slightly low pH with untreated pH 6.23.

The sample did not effectively self-settle without coagulant addition, and therefore we would recommend that coagulant dosing to contain the sediment within the WTP. LiquiPAC (Poly Aluminium Chloride) and Crystalfloc L3RC gave similar settled water turbidity at very low dose rates and easily achieved turbidity results below 10NTU. The sample required a relatively low dose rate of coagulant to create a floc which would settle in a WTP. Furthermore, over and above the optimal dose rate there was an extended range of dose rates of which effectively settled the suspended solids, so we would expect the dosing control to be relatively easy to maintain with either product across a wide range of sediment loading variability.

We would suggest that dosing of polymer is used while this material is being processed through the WTP to assist with compaction of the solids and use of the minimum amount of coagulant as possible to minimise effect on pH in particular for dosing of LiquiPAC. L3RC has little to no effect on pH, so if pH is deemed to be a control issue L3RC may be a better coagulant option for this soil type.

Untreated Sample 1

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CHEMICAL TREATMENT MANAGEMENT PLAN Doc No: 025-Y031-2719 REVISION: 04 DATE 21-March-2016

Recommendations Sample 2: Ash, Lapilli and TUFF This sample had a relatively high mobile colloidal component which remained in suspension long enough to be an issue in a WTP. This sample also had a slightly low pH with untreated pH 6.02.

The sample did not effectively self-settle without coagulant addition, and therefore we would recommend that coagulant dosing is used to contain the sediment within the WTP. LiquiPAC (Poly Aluminium Chloride) and Crystalfloc L3RC gave similar settled water turbidity at very low dose rates and easily achieved turbidity results below 10NTU. The sample required a relatively low dose rate of coagulant to create a floc which would settle in a WTP. Furthermore, over and above the optimal dose rate there was an extended range of dose rates of which effectively settled the suspended solids, so we would expect the dosing control to be relatively easy to maintain with either product across a wide range of sediment loading variability.

We would suggest that dosing of polymer is used while this material is being processed through the WTP to assist with compaction of the solids and use of the minimum amount of coagulant as possible.

Untreated Sample 2

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Recommendations Sample 3: Alluvium This sample had an extremely high mobile colloidal component which remained in suspension long enough to be an issue in a WTP. This sample had an untreated pH6.73.

The sample did not effectively self-settle even with coagulant addition, and therefore we would recommend that coagulant and flocculant dosing is used to contain the sediment within the WTP. LiquiPAC (Poly Aluminium Chloride) and Crystalfloc L3RC gave similar settled water turbidity at mid to high range dose rates and could achieve turbidity results below 20NTU. The sample required dosing of coagulant and flocculant to create a floc which would settle in a WTP. Over and above the optimal dose rate there was a reasonable range of dose rates of which effectively settled the suspended solids, however the balance of coagulant and flocculant would need to be adjusted according to results. We would expect the dosing control require focus to maintain results with product regime. Solids removal from the bottom of the WTP will require additional discharge to avoid overfilling the WTP with solids while processing this material.

We would suggest that dosing of polymer is essential while this material is being processed through the WTP to assist with compaction of the solids and use of the minimum amount of coagulant as possible.

Untreated Sample 3

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Recommendations Sample 4: Completely Weathered Sandstone This sample had a relatively high mobile colloidal component which remained in suspension long enough to be an issue in a WTP. This sample had an untreated pH6.63.

The sample did not effectively self-settle without coagulant addition, and therefore we would recommend that coagulant dosing is used to contain the sediment within the WTP. LiquiPAC (Poly Aluminium Chloride) and Crystalfloc L3RC gave similar settled water turbidity at very low dose rates and easily achieved turbidity results below 10NTU. The sample required a relatively low dose rate of coagulant to create a floc which would settle in a WTP. Furthermore, over and above the optimal dose rate there was an extended range of dose rates of which effectively settled the suspended solids, so we would expect the dosing control to be relatively easy to maintain with either product across a wide range of sediment loading variability.

We would suggest that dosing of polymer is used while this material is being processed through the WTP to assist with compaction of the solids and use of the minimum amount of coagulant as possible.

Untreated Sample 4

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CHEMICAL TREATMENT MANAGEMENT PLAN Doc No: 025-Y031-2719 REVISION: 04 DATE 21-March-2016

Recommendations Sample 5: Unweathered Sandstone and Gravels This sample had a relatively low mobile colloidal component which remained in suspension long enough to be an issue in a WTP. This sample had an untreated pH 7.33.

The sample effectively self-settled without coagulant addition, however there was a small amount of colloidal material which held the settled water turbidity above 20NTU and therefore we would recommend that coagulant dosing to contain the fine sediment within the WTP. LiquiPAC (Poly Aluminium Chloride) performed best on this sample at very low dose rates and easily achieved turbidity results below 10NTU. The sample required a relatively low dose rate of coagulant to create a floc which would settle in a WTP. Furthermore, over and above the optimal dose rate there was an extended range of dose rates of which effectively settled the suspended solids, so we would expect the dosing control to be relatively easy to maintain with either product across a wide range of sediment loading variability.

We would suggest that dosing of polymer is used while this material is being processed through the WTP to assist with compaction of the solids and use of the minimum amount of coagulant as possible.

Untreated Sample 5

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CHEMICAL TREATMENT MANAGEMENT PLAN Doc No: 025-Y031-2719 REVISION: 04 DATE 21-March-2016

Recommendations Sample 6: Alluvium Reworked ECBF This sample had an extremely high mobile colloidal component which remained in suspension long enough to be an issue in a WTP. This sample had an untreated pH7.10.

The sample did not effectively self-settle even with coagulant addition, and therefore we would recommend that coagulant and flocculant dosing is used to contain the sediment within the WTP. LiquiPAC (Poly Aluminium Chloride) gave by far the best settled water turbidity at mid to high range dose rates and could achieve turbidity results below 20NTU only with addition of flocculant. Crystalfloc L3RC did not perform very well on this sample.

The sample required dosing of coagulant and flocculant to create a floc which would settle in a WTP. Over and above the optimal dose rate there was a reasonable range of dose rates of which effectively settled the suspended solids, however the balance of coagulant and flocculant would need to be adjusted according to results. We would expect the dosing control require focus to maintain results with product regime. Solids removal from the bottom of the WTP will require additional discharge to avoid overfilling the WTP with solids while processing this material.

We would suggest that dosing of polymer is essential while this material is being processed through the WTP to assist with compaction of the solids and use of the minimum amount of coagulant as possible.

Untreated Sample 6

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CHEMICAL TREATMENT MANAGEMENT PLAN Doc No: 025-Y031-2719 REVISION: 04 DATE 21-March-2016

Recommendations Sample 7: Highly Weathered Sandstone This sample had a relatively high mobile colloidal component which remained in suspension long enough to be an issue in a WTP. This sample had an untreated pH7.27.

The sample did not effectively self-settle without coagulant addition, and therefore we would recommend that coagulant dosing is used to contain the sediment within the WTP. LiquiPAC (Poly Aluminium Chloride) gave similar settled water turbidity at very low dose rates and easily achieved turbidity results below 10NTU. Crystalfloc L3RC did not perform very well on this sample.

The sample required a relatively low dose rate of coagulant to create a floc which would settle in a WTP. Furthermore, over and above the optimal dose rate there was an extended range of dose rates of which effectively settled the suspended solids, so we would expect the dosing control to be relatively easy to maintain with LiquiPAC. We would suggest that dosing of polymer is used while this material is being processed through the WTP to assist with compaction of the solids and use of the minimum amount of coagulant as possible.

Untreated Sample 7

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CHEMICAL TREATMENT MANAGEMENT PLAN Doc No: 025-Y031-2719 REVISION: 04 DATE 21-March-2016

Chemically Assisted Settling Test Data Best of test results shown but other data available if required.

Note this fill colour denotes optimum dose rate/range

Sample 1: Non-Engineered Fill LiquiPAC ppm

pH

Turbidity NTU @ T=10min

0

6.23

>1000

5 10

6.14 6.07

13.8 8.83

15

5.98

8.57

20

5.91

8.99

pH

Turbidity NTU @ T=10min

0

6.23

>1000

0.5 1.0

6.23 6.23

6.68 5.03

1.5

6.22

6.30

2.0

6.22

6.40

LiquiPAC 5 to 20ppm

L3RC ppm

L3RC 0.5 to 2.0ppm

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Sample 2: Ash, Lapilli and TUFF LiquiPAC ppm

pH

Turbidity NTU @ T=10min

0

6.02

>1000

5

5.95

32.7

10 15

5.87 5.82

11.3 9.56

20

5.75

9.25

LiquiPAC 5 to 20ppm

L3RC ppm

pH

Turbidity NTU @ T=10min

0

6.02

>1000

0.5 1.0

6.00 6.00

11.1 7.72

1.5

5.99

6.41

2.0

5.99

6.70

L3RC 0.5 to 2.0ppm

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Sample 3: Alluvium LiquiPAC ppm

pH

Turbidity NTU @ T=10min

0

6.73

>1000

5 10

6.67 6.62

118.0 26.8

15

6.59

19.6

20

6.57

12.9

pH

Turbidity NTU @ T=10min

LiquiPAC 5 to 20ppm

L3RC ppm 0

6.73

>1000

0.5 1.0

6.72 6.71

>1000 274.0

1.5 2.0

6.70 6.70

73.5 40.1

4.0 6.0

6.69 6.67

12.8 13.3

8.0

6.66

9.82

L3RC 0.5 to 2.0ppm

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L3RC 2 to 8ppm

LiquiPAC ppm

Crystalfloc B610H ppm

pH

Turbidity NTU @ T=10min

10 10

1 2

6.62 6.62

14.4 19.5

L3RC ppm 2 2

Crystalfloc B610H ppm 1 2

pH 6.70 6.70

Turbidity NTU @ T=10min 277.0 323.0

8

2

6.66

18.6

LiquiPAC 10ppm + 1 to 2ppm B610H and L3RC 2ppm + 1 to 2ppm B610H

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Sample 4: Completely Weathered Sandstone LiquiPAC ppm

pH

Turbidity NTU @ T=10min

0

6.63

>1000

5 10

6.61 6.58

6.51 5.58

15

6.57

5.35

20

6.55

5.40

pH

Turbidity NTU @ T=10min

LiquiPAC 5 to 20ppm

L3RC ppm 0

6.63

>1000

0.5 1.0

6.63 6.62

7.00 5.66

1.5 2.0

6.62 6.61

7.10 6.99

L3RC 0.5 to 2.0ppm

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Sample 5: Unweathered Sandstone and Gravels LiquiPAC ppm 0

pH 7.33

Turbidity NTU @ T=10min 867.0

5 10

7.28 7.26

12.5 7.45

15

7.20

4.27

20

7.14

2.94

pH

Turbidity NTU @ T=10min

LiquiPAC 5 to 20ppm

L3RC ppm 0

7.33

>1000

0.5 1.0

7.28 7.27

27.2 26.8

1.5

7.26

31.9

2.0 4.0

7.25 7.24

30.0 19.0

L3RC 0.5 to 2.0ppm

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Sample 6: Alluvium Reworked ECBF LiquiPAC ppm

pH

Turbidity NTU @ T=10min

0

7.10

>1000

5 10

6.99 6.93

404.0 125.0

15

6.82

59.9

20

6.74

32.3

25

6.70

18.7

pH

Turbidity NTU @ T=10min

0 1 2

7.10 7.06 7.05

>1000 >1000 >1000

3

7.04

>1000

4 6

7.04 7.03

411.0 187.0

8 10

7.02 7.00

71.6 283.0

12

6.98

251.0

LiquiPAC 5 to 20ppm

L3RC ppm

L3RC 1 to 4ppm

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CHEMICAL TREATMENT MANAGEMENT PLAN Doc No: 025-Y031-2719 REVISION: 04 DATE 21-March-2016

L3RC 6 to 12ppm

LiquiPAC ppm

Crystalfloc B610H ppm

pH

Turbidity NTU @ T=10min

15

2

6.82

42.9

15 20

4 2

6.82 6.70

41.1 16.8

L3RC ppm 6

Crystalfloc B610H ppm 2

pH 7.03

6 8

4 4

7.03 7.02

Turbidity NTU @ T=10min 130.0 486.0 38.4

LiquiPAC 15ppm + 2 to 4ppm B610H and L3RC 6ppm + 2 to 4ppm B610H

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Sample 7: Highly Weathered Sandstone LiquiPAC ppm

pH

Turbidity NTU @ T=10min

0

7.27

>1000

5 10

7.18 7.15

13.3 10.3

15

7.07

7.50

20

6.94

5.38

pH

Turbidity NTU @ T=10min

0 0.5 1.0

7.27 7.27 7.27

>1000 67.7 30.6

1.5

7.26

32.9

2.0 4.0

7.26 7.26

43.2 62.1

LiquiPAC 5 to 20ppm

L3RC ppm

L3RC 0.5 to 2.0ppm

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Testing by RST Environmental Solutions Ltd Boreholes 116 & 113 August 2015 (Haloklear DPS system)

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BH 116 & 113 August 2015 (1)

Sample Addtns

pH NTUs

BH116 (1) ~15g/L 200rpm for additions,3x500, + LF, 1x500, 1x200, stop.

A B C Control 1xLBP 1xLBP 1xLF 2xLF 6.40 157.00

6.49 15.29

6.40 10.43

D 2xLBP 2xLF 6.58 8.65

E 1xLBP 1xLF + 0.1g gypsum 6.62 9.98

F 2xLBP 2xLF +0.1g gypsum 6.60 7.70

G 2xP50

H PAC @ 8mg/L 6.25mls (1/100)

6.52 19.01

6.40 27.13

E 1xLBP 1xLF + 0.1g gypsum 7.00 25.73

F 2xLBP 2xLF +0.1g gypsum 7.18 18.03

G 2xP50

H PAC @ 8mg/L 6.25mls (1/100)

6.66 17.84

6.68 36.33

Sample Addtns

pH NTUs

(2)

Sample Addtns

pH NTUs

BH116 (2) ~15g/L 200rpm for additions,3x500, + LF, 1x500, 1x200, stop.

A B C Control 1xLBP 1xLBP 1xLF 2xLF 6.60 96.47

CONNECTUS PROJECT NO. 2719 CITY RAIL LINK LIMITED

6.56 8.49

6.83 8.69

D 2xLBP 2xLF 6.80 6.61

Sample Addtns

pH NTUs

PAGE 43 OF 51

CHEMICAL TREATMENT MANAGEMENT PLAN Doc No: 025-Y031-2719 REVISION: 04 DATE 21-March-2016

(3)

Sample Addtns

pH NTUs

BH116 (3) ~15g/L 200rpm for additions,3x500, + LF, 1x500, 1x200, stop.

A B C Control 1xLBP 1xLBP 1xLF 2xLF 7.33 623.00

7.50 822.33

7.48 36.80

D 2xLBP 2xLF 7.50 75.93

E 1xLBP 1xLF + 0.1g gypsum 7.36 409.00

F 2xLBP 2xLF +0.1g gypsum 7.41 22.20

G 2xP50

H PAC @ 8mg/L 6.25mls (1/100)

7.40 38.20

7.39 200.67

E 1xLBP 1xLF + 0.1g gypsum 7.49 20.11

F 2xLBP 2xLF +0.1g gypsum 7.38 14.52

G 2xP50

H PAC @ 8mg/L 6.25mls (1/100)

7.40 14.21

7.20 10.47

Sample Addtns

pH NTUs

(4)

Sample Addtns

pH NTUs

BH116 (4) ECBF ~15g/L 200rpm for additions,3x500, + LF, 1x500, 1x200, stop.

A B C Control 1xLBP 1xLBP 1xLF 2xLF 7.43 916.00

CONNECTUS PROJECT NO. 2719 CITY RAIL LINK LIMITED

7.41 21.32

7.46 20.19

D 2xLBP 2xLF 7.29 21.22

Sample Addtns

pH NTUs

PAGE 44 OF 51

CHEMICAL TREATMENT MANAGEMENT PLAN Doc No: 025-Y031-2719 REVISION: 04 DATE 21-March-2016

(5)

Sample Addtns

pH NTUs

BH116 (5) ~15g/L 200rpm for additions,3x500, + LF, 1x500, 1x200, stop.

A B C Control 1xLBP 1xLBP 1xLF 2xLF 7.93 294.00

7.94 73.67

7.96 57.87

D 2xLBP 2xLF 7.91 62.53

E 1xLBP 1xLF + 0.1g gypsum 7.88 85.30

F 2xLBP 2xLF +0.1g gypsum 7.88 59.93

G 2xP50

E 1xLBP 1xLF + 0.1g gypsum 7.61 105.00

F 2xLBP 2xLF +0.1g gypsum

G 2xP50

H PAC @ 8mg/L 6.25mls (1/100)

7.50 168.67

7.24 458.00

7.37 2.49

H PAC @ 8mg/L 6.25mls (1/100)

Sample Addtns

pH

6.25

NTUs

(6)

Sample Addtns

pH NTUs

BH113 (6) Alluvium ~15g/L 200rpm for additions,3x500, + LF, 1x500, 1x200, stop.

A B C Control 1xLBP 1xLBP 1xLF 2xLF 7.72 >1000

CONNECTUS PROJECT NO. 2719 CITY RAIL LINK LIMITED

7.67 581.00

7.70 164.33

D 2xLBP 2xLF 7.60 97.20

44.67

Sample Addtns

pH NTUs

PAGE 45 OF 51

CHEMICAL TREATMENT MANAGEMENT PLAN Doc No: 025-Y031-2719 REVISION: 04 DATE 21-March-2016

(7)

Sample Addtns

pH NTUs

BH113 (7) Sandstone 200rpm for additions,3x500, + LF, 1x500, 1x200, stop.

A B C Control 1xLBP 1xLBP 1xLF 2xLF 7.76 576.00

7.77 36.00

7.78 29.73

D 2xLBP 2xLF 7.70 34.53

E 1xLBP 1xLF + 0.1g gypsum 7.71 39.47

F 2xLBP 2xLF +0.1g gypsum 7.66 30.53

G 2xP50

H PAC @ 8mg/L 6.25mls (1/100)

7.40 2.52

7.18 6.17

Sample Addtns

pH NTUs

Residual Chitosan Testing is available for any residual chitosan in water that has been treated with the dual polymer system.

This looks at a standard level of 0.1mg/L chitosan and a blank sample compared to a site sample. For one site, over a four-month period, residual chitosan did not register above 0.1mg/L.

Abbreviations LBP = natural biopolymer, LF = liquid flocculant; P50 = blended biopolymer and polyaluminum chloride; PAC = polyaluminum chloride

CONNECTUS PROJECT NO. 2719 CITY RAIL LINK LIMITED

PAGE 46 OF 51

CHEMICAL TREATMENT MANAGEMENT PLAN Doc No: 025-Y031-2719 REVISION: 04 DATE 21-March-2016

APPENDIX C: HALOKLEAR DPS SYSTEM INFORMATION

CONNECTUS PROJECT NO. 2719 CITY RAIL LINK LIMITED

PAGE 47 OF 51

TM

HaloKlearâ&#x201E;˘ Dual Polymer System (DPS) The best water treatment system for your business and the environment

The Science of Cleaner Water

haloklear.com

WH AT

W E

D O

TM

Key HaloKlear Product Benefits • TSS Reduction • Has a proven track record in protecting the environment and exceeding rigorous state and national discharge requirements • Works effectively in active, semi-passive, and passive treatment models • Is cost-effective for treating large and small sites • 100% biodegradable through enzymatic activity • Produces no bioaccumulation • Uses the HaloKlear DPS Jar Test Kit for quickly determining correct dosages in the field • 100% PAM-free • Works on ALL soils • Works on a wide range of pH and in fresh and salt water • Traps or flocculates some hydrocarbons, metals, and nutrients • Residual testing can be done on-site with available residual test kits

2

HaloKlear products are used to treat storm, industrial and municipal water, including pollutants in construction site runoff, by reversing the process of water contamination through a combination of advanced, environmentally friendly, natural biopolymer technologies.

When it comes to handling dirty water, HaloKlear has built its reputation on creating reliable, effective and safe solutions that can solve all kinds of sediment control problems. HaloKlear’s Dual Polymer System (DPS) uses natural biopolymers that completely biodegrade through simple enzymatic activity, resulting in no bioaccumulation. The primary active ingredients are commonly used in the dietary supplement and food industries.

The HaloKlear Biopolymer Residual Test Kit is used to ensure excess biopolymers are not leaving the site. This knowledge is comforting for regulators,contractors and the general public, who can rest assured that the products are not going to cause harm to the environment.

Most importantly, HaloKlear’s DPS has a best-in-class performance, and has proven itself under vastly varied conditions around the world.

It is used in systems ranging from active treatment for mobile water treatment, semi-passive pumped water incorporating coarse filtration and geotextile bags, and completely passive models, such as bio-filtration and check dams. HaloKlear DPS is designed to give contractors and industries in need of water treatment solutions the essential tool they need to meet state and national discharge regulations, and as well as the new proposed EPA Effluent Limitation Guidelines (ELGs).

haloklear.com

APP LI CAT I O N S

HaloKlear Products Deliver Performance and Clean Water Solutions In the field, we all face the same problem – we must return water to the environment that meets discharge guidelines. HaloKlear products are a complete line of cost-effective, innovative products that will meet your needs today. These products are not only safe for the environment, they have helped our customers solve their discharge problems, while enhancing project economics in industries like: • • • • • • •

Construction Oil & Gas Mining Dredging Industrial Process Water Raw Wastewater Treatment Environmental Remediation

The bottle on the far left shows untreated water while the bottle on the right shows water treated with HaloKlear’s new Dual Biopolymer System. The picture at right shows the “flocked” dirt.

haloklear.com

3

APPL ICATION

METH ODS

TM

HaloKlear products achieve significant water quality results in active, semi-passive and passive treatment systems.

HaloKlear DPS “Passive” Treatment Models Feature • Acrylamide-free treatment system • Lowest maintenance requirement • No mechanized equipment requirement • Can reduce footprint by up to 50% • Minimizes or eliminates need for water storage • Actual flow range dependent on Best Management Practice (BMP) design and frequency/severity of storm events • Uses natural filtration and settling to reduce costs • A cost-effective model for meeting EPA & ELG requirements • Easily applied to new and existing BMPs • Lowest cost treatment system

Typical Results: 50-250 NTU

4

haloklear.com

HaloKlear DPS “Semi-Passive“ Treatment Model

Typical Results: 20-50 NTU

• Delivers consistent results • Acrylamide-free treatment system • Low maintenance requirement • Low mechanized equipment requirement • Significantly reduces footprint compared to traditional active treatment systems • Does not require backwashing • Requires HaloKlear SockMaster™ Manifold kit & pump; rated 100-500 GPM • Low cost compared to traditional active treatment systems • May use coarse filtration, settling, or both to improve cost effectiveness • Plug-in-play a variety of configurations including: BMPs, dewatering bags, and recirculation systems.

• May be used in conjunction with passive treatment models • May involve contaminant and nutrient removal

HaloKlear DPS “Active” Treatment Model

Typical Results: 10-35 NTU

• • • •

Delivers consistent results Acrylamide-free treatment system Identical footprint to traditional active treatment systems Reduced frequency of backwashing compared to traditional active treatment systems • Actual flow range dependent on mechanized equipment and pumping capabilities • Can reduce operational costs compared to traditional active treatment systems.

• The use of HaloKlear biopolymers enhances the efficiency of most filtration equipment used in active treatment systems, by aiding the capture of finer solids, reducing the frequency of back-wash, allowing faster settling of particles in settling tanks, and providing solids/contaminants that have a lower percentage of water, which reduces hauling and disposal costs.

haloklear.com

5

PROD UCTS

TM

HaloKlear Dry and Liquid Formula Flocculants The HaloKlear product line offers a diverse selection of flocculants made up of natural bioplymers, ranging from stand-alone media to component solutions. The 100% biodegradable treatments deliver superior, consistent performance with a minimal environmental impact.

HaloKlear has proven to be effective with all construction soil types and in a wide range of climates.

The treatments can be used separately or as part of the HaloKlear Dual Polymer System (DPS) to remove contaminants - such as sediments, oils, heavy metals, and nutrients - from storm and effluent water. The concentrated dry formula is more economical to ship. Consult a qualified HaloKlear technical representative or your local HaloKlear distributor for application methods and dosing information.

HaloKlear GelFloc™ and HaloKlear DBP-2100™ Dry Formula Products HaloKlear LiquiFloc™ and HaloKlear LBP-2101™ Liquid Formula Products

HaloKlear LiquiFloc and LBP-2101 are both available in 5-gallon buckets, 55-gallon drums, 275-gallon totes and bulk liquid.

The HaloKlear LiquiFloc product is available in 1%, 2%, and 3% active concentrations, as well as in custom formulations for specific applications.

6

Pictures on the left show the HaloKlear MB kit, the colorcoded HaloKlear GelFloc (yellow) and the HaloKlear DBP-2100 (green) segmented socks.

Each bucket has 4 individually packed socks. Dosage and metering rates can be determined using the HaloKlear DPS Jar Test Kit and by consulting a HaloKlear agent or qualified representative.

Patents: US 6,749,748 US 6,821,427

haloklear.com

CO MPA RI SO N S

TREATMENT CELLS GELFLOC SEGMENTED SOCKS

DBP 2100 SEGMENTED SOCKS

SETTLING CELL/S

S

PUMP SYSTEM AT INSTALLER'S DISCRETION PER FLOW/DOSE TABLE (200 TO 300 GPM TYPICAL)

A

L

POND

OUTLET OPTIONS INCLUDE RECIRCULATION AND DISCHARGE ROUTING. 100 FT OF VEGETATED BUFFER PRIOR TO SITE DISCHARGE IS RECOMMENDED

A WATTLE (TYP) NOTE 4 DETAIL B

PLAN AND PROFILE DPS SEMI-PASSIVE TREATMENT CONFIGURATION

STAPLE AT DPS SEGMENTED SOCK STRAP

DETAIL B DPS SEGMENTED SOCK TIE DOWN

Passive model using DPS segmented socks in corrugated pipe

CHANNEL SURFACE AT DISCRETION OF DESIGNER MAY BE GRASS, GRAVEL, OR IMPERMEABLE LINER

SECTION A-A TREATMENT CELL

Semi-passive model using segmented socks and wattles

HaloKlear DPS vs. PAMs (Polyacrylamides) VARIABLES Soil Types Soil Samples

Dose Rate Calculation

Organic & Biodegradable Residual Testing

Application Range

haloklear.com

HALOKLEAR DPS

PAMs (POLYACRYLAMIDES) GRANULAR, POWDER & BLOCKS

The HaloKlear Formula works on all construction soil types

Highly soil-specific (100s of different formulations)

There is no need to send soil samples. The HaloKlear DPS system works on all construction soil types

The majority of soil samples must be collected and shipped to manufacturer’s lab for specific polyacrylamide selection, adding time and cost

Dose rates can be rapidly determined in the field with the HaloKlear DPS Jar Test Kit

Dose rate calculation must be made by manufacturer after soil sample is received at factory and analyzed, adding time and cost

Yes—manufactured from natural occurring biopolymers, which degrade through enzymatic activity

Yes—derived from petroleum-based products

HaloKlear offers an affordable biopolymer residual test kit, which can be used in the field for immediate results

Laboratory analysis is needed, which can take several days, adding time and cost

HaloKlear DPS can be applied on passive, semi-passive, and active treatment systems (Sand-Media, Bags, Cartridges, Screens, etc.).

Active treatment systems will benefit due to the type of flock generated (stable and high sheer strength), its ability to retain finer solids, retain a lower percentage of water (i.e. drier solids), and easily be backwashed from the filter

Polyacrylamides can only be used with passive and semi-passive systems and not with active treatment systems, because they will usually produce a gelatinous flock which contains a high percentage of water and will stick/bind to the filtration media (i.e. Sand, Screens, etc.) making it difficult to backwash and clean

7

A CC ESSORI ES HaloKlear DPS Dose Calculator

HaloKlear DPS Jar Test Kit The HaloKlear Order the HaloKlear DPS Jar Test Kit DPS Jar Test Kit free www.haloklear.com can be used with the HaloKlear DPS Dose Calculator to determine the proper biopolymer dose for your water clarification needs.

The HaloKlear DPS Dose Calculator, available for download at www. haloklear.com/calculator, will provide the total quantity of products required in 275-gal totes, 55-gal drums, biopolymer socks and dry powder/flake. Please contact a HaloKlear representative or local distributor for pricing.

TM

Neither HaloSource, Inc. nor the seller of this product can accept any responsibility where the product is not used according to directions, guides and for the manner in which it was intended.

HaloKlear, GelFloc, LiquiFloc, DBP-2100, LBP-2101, SockMaster, and HaloSource are trademarks of HaloSource, Inc. Š 2011 HaloSource, Inc.

HaloKlear Residual Biopolymer Test Kit The HaloKlear Residual Biopolymer Test Kit uses proven test methods for detecting the presence of free residual biopolymer before it can leave the job site. Compared to other test kits, this kit improves accuracy by up to 25%. You can achieve results without the hassle of using outside labs, while ensuring you are compliant with local and federal discharge regulations.

Need Image

HaloKlear SockMaster Manifold Kit The HaloKlear SockMaster Manifold Kit, combined with three 10-ft sections of 6-in PVC schedule-40 pipe obtained locally (not included), provides all of the parts required to quickly and easily assemble a complete HaloKlear SockMaster Manifold. The assembled manifold houses the HaloKlear Dual Polymer System (DPS) sock sets during semipassive stormwater and wastewater treatment applications. The HaloKlear SockMaster Manifold Kit comes complete with easy to follow assembly instructions and diagram. Please contact a HaloKlear representative or your local HaloKlear distributor for further details and/or product pricing.

DISTRIBUTED BY

HaloSource, Inc. 1631 220th St. SE, STE 100, Bothell, WA 98021, USA Tel: 425-881-6464 | Fax: 425-556-4120 www.haloklear.com | www.halosource.com 1-888-98-STORM

0464-01

CHEMICAL TREATMENT MANAGEMENT PLAN Doc No: 025-Y031-2719 REVISION: 04 DATE 21-March-2016

APPENDIX D: ELECTRONIC DOSING SYSTEM INFORMATION

CONNECTUS PROJECT NO. 2719 CITY RAIL LINK LIMITED

PAGE 48 OF 51

Introducing the latest innovation from RST Environmental Solutions Ltd

EDD

TM

Electronic Dosing Device

patent pending

This new device is set to revolutionise the Sediment and Erosion Control Industry in New Zealand. The system is designed to take all the hassle out of the old rain activated shed system.

The system is flow activated so whilst there is water running in to the pond whether from rain fall or from a pump EDD will dose the water.

It can add any type of flocculent system and can run dual polymers if necessary.

EDD can manage a site up to 10 hectare.

EDD will also monitor rainfall on site and rainfall intensity and can measure the volume of water that passes through the pond.

It can send a text message if any preset limits are reached or when the flocculent is low in the tank.

Add on’s to the system include measuring total suspended solids at the inlet and outlet of the pond, pond pH plus there is provision to install other devices.

EDD has telemetry so we can transmit live data to a web site.

EDD’s systems mean that it is very easy to calibrate for any catchment size or chemical dose rater.

The monitoring system means that there is less maintenance or any requirement to check the ponds and the feedback system allows for easy management.

It’s dosing system is highly accurate and so less chemical is likely to be used allowing for addition cost savings not only from less chemical but also less management time.

www.rst.co.nz

0800 haloklear 0800 425 655

KEY FEATURES Flow activated Accurate dosing Can manage up to a 10ha catchment Can sms alerts Can post data to a website Low flocculent alert Can monitor: TSS pH Rainfall Rainfall Intensity Other functions available

CHEMICAL TREATMENT MANAGEMENT PLAN Doc No: 025-Y031-2719 REVISION: 04 DATE 21-March-2016

APPENDIX E: MATERIAL SAFETY DATA SHEETS

CONNECTUS PROJECT NO. 2719 CITY RAIL LINK LIMITED

PAGE 49 OF 51

40.2.7

Page 1/7

Safety Data Sheet acc. to OSHA HCS Printing date 05/20/2015

Reviewed on 05/20/2015

1 Identification · Product identifier · Trade name: HaloKlear: LBP-2101 · Details of the supplier of the safety data sheet · Manufacturer/Supplier: HaloSource Inc. 1725 220th Street SE, Suite 103, Bothell, WA 98021 Quality@halosource.com · Information department: Product safety department · Emergency telephone number: During normal opening times: +1 (425) 881-6464 800-424-9300 CHEMTREC (Domestic, North America) +1-703-527-3887 CHEMTREC (International, collect calls accepted)

2 Hazard(s) identification · Classification of the substance or mixture The product is not classified according to the Globally Harmonized System (GHS). · Label elements · GHS label elements Void · Hazard pictograms Void · Signal word Void · Hazard statements Void · Classification system: · NFPA ratings (scale 0 - 4)

0

0

Health = 0 Fire = 0 Reactivity = 0

0

· HMIS-ratings (scale 0 - 4) HEALTH

0

FIRE

0

REACTIVITY 0

Health = 0 Fire = 0 Reactivity = 0

· Other hazards · Results of PBT and vPvB assessment · PBT: Not applicable. · vPvB: Not applicable.

3 Composition/information on ingredients · Chemical characterization: Mixtures · Description: Mixture of the substances listed below with nonhazardous additions. · Dangerous components: Void US

(Contd. on page 2)

40.2.7

Page 2/7

Safety Data Sheet acc. to OSHA HCS Printing date 05/20/2015

Reviewed on 05/20/2015

Trade name: HaloKlear: LBP-2101 (Contd. of page 1)

4 First-aid measures · Description of first aid measures · General information: No special measures required. · After inhalation: Supply fresh air; consult doctor in case of complaints. · After skin contact: Generally the product does not irritate the skin. · After eye contact: Rinse opened eye for several minutes under running water. · After swallowing: If symptoms persist consult doctor. · Information for doctor: · Most important symptoms and effects, both acute and delayed No further relevant information available. · Indication of any immediate medical attention and special treatment needed No further relevant information available.

5 Fire-fighting measures · Extinguishing media · Suitable extinguishing agents: CO2, extinguishing powder or water spray. Fight larger fires with water spray or alcohol resistant foam. · Special hazards arising from the substance or mixture No further relevant information available. · Advice for firefighters · Protective equipment: No special measures required.

6 Accidental release measures · Personal precautions, protective equipment and emergency procedures Not required. · Environmental precautions: No special measures required. · Methods and material for containment and cleaning up: Absorb with liquid-binding material (sand, diatomite, acid binders, universal binders, sawdust). · Reference to other sections See Section 7 for information on safe handling.

See Section 8 for information on personal protection equipment.

See Section 13 for disposal information.

7 Handling and storage · Handling: · Precautions for safe handling No special measures required. · Information about protection against explosions and fires: No special measures required. · Conditions for safe storage, including any incompatibilities · Storage: · Requirements to be met by storerooms and receptacles: No special requirements. · Information about storage in one common storage facility: Not required. · Further information about storage conditions: None. · Specific end use(s) No further relevant information available.

8 Exposure controls/personal protection · Additional information about design of technical systems: No further data; see item 7.

(Contd. on page 3) US

40.2.7

Page 3/7

Safety Data Sheet acc. to OSHA HCS Printing date 05/20/2015

Reviewed on 05/20/2015

Trade name: HaloKlear: LBP-2101 (Contd. of page 2)

· Control parameters · Components with limit values that require monitoring at the workplace: The product does not contain any relevant quantities of materials with critical values that have to be monitored at the workplace. · Additional information: The lists that were valid during the creation were used as basis. · Exposure controls · Personal protective equipment: · General protective and hygienic measures: The usual precautionary measures for handling chemicals should be followed. · Breathing equipment: Not required. · Protection of hands: The glove material has to be impermeable and resistant to the product/ the substance/ the preparation.

Due to missing tests no recommendation to the glove material can be given for the product/ the preparation/ the chemical mixture.

Selection of the glove material on consideration of the penetration times, rates of diffusion and the degradation · Material of gloves The selection of the suitable gloves does not only depend on the material, but also on further marks of quality and varies from manufacturer to manufacturer. As the product is a preparation of several substances, the resistance of the glove material can not be calculated in advance and has therefore to be checked prior to the application. · Penetration time of glove material The exact break through time has to be found out by the manufacturer of the protective gloves and has to be observed. · Eye protection: Goggles recommended during refilling.

9 Physical and chemical properties · Information on basic physical and chemical properties · General Information · Appearance: Liquid Form: White Color: Product specific · Odor: Not determined. · Odour threshold: · pH-value at 20 °C (68 °F):

<4

· Change in condition Melting point/Melting range: Boiling point/Boiling range:

Undetermined.

100 °C (212 °F)

· Flash point:

Not applicable.

· Flammability (solid, gaseous):

Not applicable.

· Ignition temperature: Decomposition temperature:

Not determined.

· Auto igniting:

Product is not selfigniting.

· Danger of explosion:

Product does not present an explosion hazard.

· Explosion limits: Lower: Upper:

Not determined.

Not determined.

(Contd. on page 4) US

40.2.7

Page 4/7

Safety Data Sheet acc. to OSHA HCS Printing date 05/20/2015

Reviewed on 05/20/2015

Trade name: HaloKlear: LBP-2101 (Contd. of page 3)

· Vapor pressure at 20 °C (68 °F):

23 hPa (17 mm Hg)

· Density at 20 °C (68 °F): · Relative density · Vapour density · Evaporation rate

0.99 g/cm³ (8.262 lbs/gal) Not determined.

Not determined.

Not determined.

· Solubility in / Miscibility with Water:

Not miscible or difficult to mix.

· Partition coefficient (n-octanol/water): Not determined. · Viscosity: Dynamic: Kinematic:

Not determined.

Not determined.

· Solvent content: Organic solvents: VOC content:

0.8 % 0.8 %

Solids content: · Other information

1.0 % No further relevant information available.

10 Stability and reactivity · Reactivity · Chemical stability · Thermal decomposition / conditions to be avoided: No decomposition if used according to specifications. · Possibility of hazardous reactions No dangerous reactions known. · Conditions to avoid No further relevant information available. · Incompatible materials: No further relevant information available. · Hazardous decomposition products: No dangerous decomposition products known.

11 Toxicological information · Information on toxicological effects · Acute toxicity: · Primary irritant effect: · on the skin: No irritant effect. · on the eye: No irritating effect. · Sensitization: No sensitizing effects known. · Additional toxicological information: The product is not subject to classification according to internally approved calculation methods for preparations: When used and handled according to specifications, the product does not have any harmful effects according to our experience and the information provided to us. · Carcinogenic categories · IARC (International Agency for Research on Cancer) None of the ingredients is listed. · NTP (National Toxicology Program) None of the ingredients is listed.

(Contd. on page 5) US

40.2.7

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Safety Data Sheet acc. to OSHA HCS Printing date 05/20/2015

Reviewed on 05/20/2015

Trade name: HaloKlear: LBP-2101 (Contd. of page 4)

· OSHA-Ca (Occupational Safety & Health Administration) None of the ingredients is listed.

12 Ecological information · Toxicity · Aquatic toxicity: No further relevant information available. · Persistence and degradability No further relevant information available. · Behavior in environmental systems: · Bioaccumulative potential No further relevant information available. · Mobility in soil No further relevant information available. · Additional ecological information: · General notes: Generally not hazardous for water · Results of PBT and vPvB assessment · PBT: Not applicable. · vPvB: Not applicable. · Other adverse effects No further relevant information available.

13 Disposal considerations · Waste treatment methods · Recommendation: Smaller quantities can be disposed of with household waste. · Uncleaned packagings: · Recommendation: Disposal must be made according to official regulations.

14 Transport information · UN-Number · DOT, IMDG, IATA

not regulated

· UN proper shipping name · DOT, IMDG, IATA

not regulated

· Transport hazard class(es) · DOT, IMDG, IATA · Class

not regulated

· Packing group · DOT, IMDG, IATA

not regulated

· Environmental hazards: · Marine pollutant:

No

· Special precautions for user

Not applicable.

· Transport in bulk according to Annex II of Not applicable.

MARPOL73/78 and the IBC Code · UN "Model Regulation":

US

(Contd. on page 6)

40.2.7

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Safety Data Sheet acc. to OSHA HCS Printing date 05/20/2015

Reviewed on 05/20/2015

Trade name: HaloKlear: LBP-2101 (Contd. of page 5)

15 Regulatory information · Safety, health and environmental regulations/legislation specific for the substance or mixture · Sara · Section 355 (extremely hazardous substances): None of the ingredients is listed. · Section 313 (Specific toxic chemical listings): None of the ingredients is listed. · TSCA (Toxic Substances Control Act): All ingredients are listed. · Proposition 65 · Chemicals known to cause cancer: None of the ingredients is listed. · Chemicals known to cause reproductive toxicity for females: None of the ingredients is listed. · Chemicals known to cause reproductive toxicity for males: None of the ingredients is listed. · Chemicals known to cause developmental toxicity: None of the ingredients is listed. · Carcinogenic categories · EPA (Environmental Protection Agency) None of the ingredients is listed. · TLV (Threshold Limit Value established by ACGIH) None of the ingredients is listed. · NIOSH-Ca (National Institute for Occupational Safety and Health) None of the ingredients is listed. · GHS label elements Void · Hazard pictograms Void · Signal word Void · Hazard statements Void · Chemical safety assessment: A Chemical Safety Assessment has not been carried out.

16 Other information This information is based on our present knowledge. However, this shall not constitute a guarantee for any specific product features and shall not establish a legally valid contractual relationship. · Department issuing SDS: Environment protection department. · Contact: Mrs. Jackson · Date of preparation / last revision 05/20/2015 / · Abbreviations and acronyms: ADR: Accord européen sur le transport des marchandises dangereuses par Route (European Agreement concerning the International Carriage of Dangerous Goods by Road) IMDG: International Maritime Code for Dangerous Goods DOT: US Department of Transportation IATA: International Air Transport Association ACGIH: American Conference of Governmental Industrial Hygienists EINECS: European Inventory of Existing Commercial Chemical Substances ELINCS: European List of Notified Chemical Substances (Contd. on page 7) US

40.2.7

Page 7/7

Safety Data Sheet acc. to OSHA HCS Printing date 05/20/2015

Reviewed on 05/20/2015

Trade name: HaloKlear: LBP-2101 (Contd. of page 6) CAS: Chemical Abstracts Service (division of the American Chemical Society) NFPA: National Fire Protection Association (USA) HMIS: Hazardous Materials Identification System (USA) VOC: Volatile Organic Compounds (USA, EU) US

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1 Identification · Product identifier · Trade name: LiquiFloc Classic Strength (1%) · Details of the supplier of the safety data sheet · Manufacturer/Supplier: HaloSource Inc. 1725 220th Street SE, Suite 103, Bothell, WA 98021 Quality@halosource.com · Information department: Product safety department · Emergency telephone number: During normal opening times: +1 (425) 881-6464 800-424-9300 CHEMTREC (Domestic, North America) +1-703-527-3887 CHEMTREC (International, collect calls accepted)

2 Hazard(s) identification · Classification of the substance or mixture The product is not classified according to the Globally Harmonized System (GHS). · Classification according to Directive 67/548/EEC or Directive 1999/45/EC Not applicable. · Information concerning particular hazards for human and environment: The product does not have to be labeled due to the calculation procedure of international guidelines. · Classification system: The classification was made according to the latest editions of international substances lists, and expanded upon from company and literature data. · Label elements · Labelling according to EU guidelines: Observe the general safety regulations when handling chemicals.

The product is not subject to identification regulations according to directives on hazardous materials. · Classification system: · NFPA ratings (scale 0 - 4)

0

0

Health = 0 Fire = 0 Reactivity = 0

0

· HMIS-ratings (scale 0 - 4) HEALTH

0

FIRE

0

REACTIVITY 0

Health = 0 Fire = 0 Reactivity = 0

· Other hazards · Results of PBT and vPvB assessment · PBT: Not applicable. · vPvB: Not applicable.

USA

(Contd. on page 2)

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Trade name: LiquiFloc Classic Strength (1%) (Contd. of page 1)

3 Composition/information on ingredients · Chemical characterization: Mixtures · Description: Mixture of the substances listed below with nonhazardous additions. · Dangerous components: Void

4 First-aid measures · Description of first aid measures · General information: No special measures required. · After inhalation: Supply fresh air; consult doctor in case of complaints. · After skin contact: Generally the product does not irritate the skin. · After eye contact: Rinse opened eye for several minutes under running water. · After swallowing: If symptoms persist consult doctor. · Information for doctor: · Most important symptoms and effects, both acute and delayed No further relevant information available. · Indication of any immediate medical attention and special treatment needed No further relevant information available.

5 Fire-fighting measures · Extinguishing media · Suitable extinguishing agents: CO2, extinguishing powder or water spray. Fight larger fires with water spray or alcohol resistant foam. · Special hazards arising from the substance or mixture No further relevant information available. · Advice for firefighters · Protective equipment: No special measures required.

6 Accidental release measures · Personal precautions, protective equipment and emergency procedures Not required. · Environmental precautions: No special measures required. · Methods and material for containment and cleaning up: Absorb with liquid-binding material (sand, diatomite, acid binders, universal binders, sawdust). · Reference to other sections See Section 7 for information on safe handling.

See Section 8 for information on personal protection equipment.

See Section 13 for disposal information.

7 Handling and storage · Handling: · Precautions for safe handling No special measures required. · Information about protection against explosions and fires: No special measures required. · Conditions for safe storage, including any incompatibilities · Storage: · Requirements to be met by storerooms and receptacles: No special requirements. · Information about storage in one common storage facility: Not required. · Further information about storage conditions: None.

(Contd. on page 3) USA

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Trade name: LiquiFloc Classic Strength (1%) (Contd. of page 2)

· Specific end use(s) No further relevant information available.

8 Exposure controls/personal protection · Additional information about design of technical systems: No further data; see item 7. · Control parameters · Components with limit values that require monitoring at the workplace: The product does not contain any relevant quantities of materials with critical values that have to be monitored at the workplace. · Additional information: The lists that were valid during the creation were used as basis. · Exposure controls · Personal protective equipment: · General protective and hygienic measures: The usual precautionary measures for handling chemicals should be followed. · Breathing equipment: Not required. · Protection of hands: The glove material has to be impermeable and resistant to the product/ the substance/ the preparation.

Due to missing tests no recommendation to the glove material can be given for the product/ the preparation/ the chemical mixture.

Selection of the glove material on consideration of the penetration times, rates of diffusion and the degradation · Material of gloves The selection of the suitable gloves does not only depend on the material, but also on further marks of quality and varies from manufacturer to manufacturer. As the product is a preparation of several substances, the resistance of the glove material can not be calculated in advance and has therefore to be checked prior to the application. · Penetration time of glove material The exact break through time has to be found out by the manufacturer of the protective gloves and has to be observed. · Eye protection: Goggles recommended during refilling.

9 Physical and chemical properties · Information on basic physical and chemical properties · General Information · Appearance: Liquid Form: Clear Color: Pungent · Odor: Not determined. · Odour threshold: · pH-value at 20 °C (68 °F):

< 4.5

· Change in condition Melting point/Melting range: Boiling point/Boiling range:

Undetermined.

100 °C (212 °F)

· Flash point:

Not applicable.

· Flammability (solid, gaseous):

Not applicable.

· Ignition temperature: Decomposition temperature:

Not determined.

(Contd. on page 4) USA

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Trade name: LiquiFloc Classic Strength (1%) (Contd. of page 3)

· Auto igniting:

Product is not selfigniting.

· Danger of explosion:

Product does not present an explosion hazard.

· Explosion limits: Lower: Upper:

Not determined.

Not determined.

· Vapor pressure at 20 °C (68 °F):

23 hPa (17 mm Hg)

· Density at 20 °C (68 °F): · Relative density · Vapour density · Evaporation rate

1.1 g/cm³ (9.18 lbs/gal) Not determined.

Not determined.

Not determined.

· Solubility in / Miscibility with Water:

Not miscible or difficult to mix.

· Partition coefficient (n-octanol/water): Not determined. · Viscosity: Dynamic: Kinematic:

Not determined.

Not determined.

· Solvent content: Organic solvents: · Other information

0.0 % No further relevant information available.

10 Stability and reactivity · Reactivity · Chemical stability · Thermal decomposition / conditions to be avoided: No decomposition if used according to specifications. · Possibility of hazardous reactions No dangerous reactions known. · Conditions to avoid No further relevant information available. · Incompatible materials: No further relevant information available. · Hazardous decomposition products: No dangerous decomposition products known.

11 Toxicological information · Information on toxicological effects · Acute toxicity: · Primary irritant effect: · on the skin: No irritant effect. · on the eye: No irritating effect. · Sensitization: No sensitizing effects known. · Additional toxicological information: The product is not subject to classification according to internally approved calculation methods for preparations: When used and handled according to specifications, the product does not have any harmful effects according to our experience and the information provided to us.

(Contd. on page 5) USA

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Trade name: LiquiFloc Classic Strength (1%) (Contd. of page 4)

· Carcinogenic categories · IARC (International Agency for Research on Cancer) None of the ingredients is listed. · NTP (National Toxicology Program) None of the ingredients is listed. · OSHA-Ca (Occupational Safety & Health Administration) None of the ingredients is listed.

12 Ecological information · Toxicity · Aquatic toxicity: No further relevant information available. · Persistence and degradability No further relevant information available. · Behavior in environmental systems: · Bioaccumulative potential No further relevant information available. · Mobility in soil No further relevant information available. · Additional ecological information: · General notes: Generally not hazardous for water · Results of PBT and vPvB assessment · PBT: Not applicable. · vPvB: Not applicable. · Other adverse effects No further relevant information available.

13 Disposal considerations · Waste treatment methods · Recommendation: Smaller quantities can be disposed of with household waste. · Uncleaned packagings: · Recommendation: Disposal must be made according to official regulations.

14 Transport information · UN-Number · DOT, IMDG, IATA

not regulated

· UN proper shipping name · DOT, IMDG, IATA

not regulated

· Transport hazard class(es) · DOT, IMDG, IATA · Class

not regulated

· Packing group · DOT, IMDG, IATA

not regulated

· Environmental hazards: · Marine pollutant:

No (Contd. on page 6) USA

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Trade name: LiquiFloc Classic Strength (1%) (Contd. of page 5)

· Special precautions for user

Not applicable.

· Transport in bulk according to Annex II of Not applicable.

MARPOL73/78 and the IBC Code · UN "Model Regulation":

-

15 Regulatory information · Safety, health and environmental regulations/legislation specific for the substance or mixture · Sara · Section 355 (extremely hazardous substances): None of the ingredients is listed. · Section 313 (Specific toxic chemical listings): None of the ingredients is listed. · TSCA (Toxic Substances Control Act): All ingredients are listed. · Proposition 65 · Chemicals known to cause cancer: None of the ingredients is listed. · Chemicals known to cause reproductive toxicity for females: None of the ingredients is listed. · Chemicals known to cause reproductive toxicity for males: None of the ingredients is listed. · Chemicals known to cause developmental toxicity: None of the ingredients is listed. · Carcinogenic categories · EPA (Environmental Protection Agency) None of the ingredients is listed. · TLV (Threshold Limit Value established by ACGIH) None of the ingredients is listed. · NIOSH-Ca (National Institute for Occupational Safety and Health) None of the ingredients is listed. · Product related hazard informations: Observe the general safety regulations when handling chemicals.

The product is not subject to identification regulations according to directives on hazardous materials. · Chemical safety assessment: A Chemical Safety Assessment has not been carried out.

16 Other information This information is based on our present knowledge. However, this shall not constitute a guarantee for any specific product features and shall not establish a legally valid contractual relationship. · Department issuing SDS: Environment protection department. · Contact: Mrs. Jackson · Date of preparation / last revision 02/09/2015 / (Contd. on page 7) USA

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Trade name: LiquiFloc Classic Strength (1%) (Contd. of page 6)

· Abbreviations and acronyms: ADR: Accord européen sur le transport des marchandises dangereuses par Route (European Agreement concerning the International Carriage of Dangerous Goods by Road) IMDG: International Maritime Code for Dangerous Goods DOT: US Department of Transportation IATA: International Air Transport Association ACGIH: American Conference of Governmental Industrial Hygienists EINECS: European Inventory of Existing Commercial Chemical Substances ELINCS: European List of Notified Chemical Substances CAS: Chemical Abstracts Service (division of the American Chemical Society) NFPA: National Fire Protection Association (USA) HMIS: Hazardous Materials Identification System (USA) USA

CHEMICAL TREATMENT MANAGEMENT PLAN Doc No: 025-Y031-2719 REVISION: 04 DATE 21-March-2016

APPENDIX F: ISCA REQUIREMENTS

CONNECTUS PROJECT NO. 2719 CITY RAIL LINK LIMITED

PAGE 50 OF 51

Connectus Project #: 2665

Chemical Treatment Management Plan Doc. No. CRL-PAT-ENV-CON-PLN-001033

Client: Auckland Transport

Revision: 04, Date: 21 March 2016

APPENDIX F: ISCA REQUIREMENTS AT and Connectus are seeking an Infrastructure Sustainability Council of Australia (ISCA) Infrastructure Sustainability (IS) Rating for the CRL Enabling Works – including the stormwater main realignment and OMS strengthening works. This Appendix details IS requirements that are different, or additional to the Project’s Consent Requirements. It is essential that these requirements are met to achieve the Project’s sustainability goals, however they are not consent requirements to be certified by Auckland Council. These IS rating requirements are included as an Appendix because they are not yet fixed. They remain subject to change as the Project’s sustainability program evolves.

Applicable ISCA requirements that relate to this CTMP are listed below along with their associated target Levels.

ISCA Category

Target Level

Construction Requirements

How we aim to achieve this

DIS 1 (Including CIR Dis-1.03 – 10/7/2015)

2

Measures to minimise adverse impacts to local receiving water quality during construction have been identified and implemented

2,3

AND Monitoring of water discharges and receiving waters is undertaken at appropriate intervals and at times of discharge during construction.

AND

3.5, 4

3.5, 4

Monitoring of water discharges and receiving waters demonstrates no adverse impact on local receiving water environmental values.

Page 29

Connectus Project #: 2665 Client: Auckland Transport

Erosion and Sediment Control Plan Doc. No. CRL-PAT-ENV-CON-PLN-000897 Revision: 04, Date: 21 March 2016

AT and Connectus are seeking an Infrastructure Sustainability Council of Australia (ISCA) Infrastructure Sustainability (IS) Rating for the CRL Enabling Works – including the stormwater main realignment and OMS strengthening works. This Appendix details IS requirements that are different, or additional to the Project’s Consent Requirements. It is essential that these requirements are met to achieve the Project’s sustainability goals, however they are not consent requirements to be certified by Auckland Council. These IS rating requirements are included as an Appendix because they are not yet fixed. They remain subject to change as the Project’s sustainability program evolves.

Applicable ISCA requirements that relate to this ESCP are listed below along with their associated target Levels.

ISCA Category

Target Level

Construction Requirements

How we aim to achieve this

DIS 1 (Including CIR Dis-1.03 – 10/7/2015)

2

Measures to minimise adverse impacts to local receiving water quality during construction have been identified and implemented

Compliance with this ESCP and the CTMP Section 4

AND Monitoring of water discharges and receiving waters is undertaken at appropriate intervals and at times of discharge during construction.

Section 3 of the CTMP, Appendix D

AND Monitoring of water discharges and receiving waters demonstrates no adverse impact on local receiving water environmental values.

Section 3 of the CTMP, Appendix D

Additional Guidance: In order to demonstrate "no adverse impact on local receiving water environmental values", the following would need to be achieved: 

No exceedances of appropriately set water quality objectives, or



where there are exceedances of water quality objectives, incident investigations demonstrate: i. ii. iii.

no disruption or degradation of environmental values, no exceedance of licence limits, and Improvements to practices have been implemented to prevent recurrence.

If water quality objectives are exceeded, the onus is on the assessor to demonstrate that this has not resulted in 'disruption to the regular uses or values of the receiving water could be evidence based on discussions with the notified entities. Examples of disruptions include closure of a recreational site, an inability to use the water for irrigation/drinking supply/stock watering or other uses, ceasing commercial fishing, or other interruptions to the ability to fully utilise the receiving water in ways it is normally used.

‘Degradation’ to the receiving water environment could be measurable through a measured change in, for example, AUSRIVAS waterway condition scores (in places it is measured through Australia), exceedances of ANZECC 2000) water quality objectives (only if the waterway was of a health already in accordance with the guideline), or noticeable changes in system ecology such as harm or reduction in numbers of native fish, macro-invertebrates or riparian vegetation.

Page 1

CHEMICAL TREATMENT MANAGEMENT PLAN Doc No: 025-Y031-2719 REVISION: 04 DATE 21-March-2016

APPENDIX G: RECORD OF CLG COMMENTS

CONNECTUS PROJECT NO. 2719 CITY RAIL LINK LIMITED

PAGE 51 OF 51

Connectus Project #: 2665 Client: Auckland Transport

Erosion and Sediment Control Plan Doc. No. CRL-PAT-ENV-CON-PLN-000897 Revision: 04, Date: 21 March 2016

Comment ID

Date

Time

Forum

Commenter

Comment

Resolution

13

8/11/2015

-

Via Email

Ross Boswell

The Construction Support Areas are shown as having generators -- first I've seen of this. Those of us who lived through the Great Central Auckland Power Crisis grew heartily sick of the noise of motor generators. I would hope that the construction will use reticulated power, and that the generators are for emergency use only.

Reticulated power supplies will be used for the construction support areas wherever possible.

Generators will be required to support some of the more mobile activities and/or where is not practical to use reticulated sources.

Page 1