mulranny pier enhancement project - construction method statement · 2020. 7. 14. · construction...

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MGE0627CR0002

Mulranny Pier Enhancement Project - Construction Method Statement

June 2017

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Document Control Sheet

Copyright RPS Group Limited. All rights reserved. The report has been prepared for the exclusive use of our client and unless otherwise agreed in writing by RPS Group Limited no other party may use, make use of or rely on the contents of this report. The report has been compiled using the resources agreed with the client and in accordance with the scope of work agreed with the client. No liability is accepted by RPS Group Limited for any use of this report, other than the purpose for which it was prepared. RPS Group Limited accepts no responsibility for any documents or information supplied to RPS Group Limited by others and no legal liability arising from the use by others of opinions or data contained in this report. It is expressly stated that no independent verification of any documents or information supplied by others has been made. RPS Group Limited has used reasonable skill, care and diligence in compiling this report and no warranty is provided as to the report’s accuracy. No part of this report may be copied or reproduced, by any means, without the written permission of RPS Group Limited

Client: Mayo County Council

Project Title: Mulranny Pier Enhancement Project

Document Title: Construction Method Statement

Document No: MGE0627Rp0005

Text Pages: 12 Appendices: 1

Rev. Status Date Author(s) Reviewed By Approved By

F01 Final 21st June 2017 JF PK

GMcE

Mulranny Pier Enhancement Project

Construction Method Statement

Mulranny Pier Enhancement Project Construction Method Statement

MGE0627RP0005 F01 i

TABLE OF CONTENTS

1 INTRODUCTION ................................................................................................................ 1

1.1 OVERVIEW AND PURPOSE OF THIS REPORT.......................................................................................... 1

1.2 REPORT STRUCTURE ........................................................................................................................ 2

2 PROPOSED PROJECT ......................................................................................................... 4

2.1 PROJECT SITE LOCATION .................................................................................................................. 4

2.2 PROJECT DESCRIPTION ..................................................................................................................... 4

3 CONSTRUCTION METHODS AND PROCEDURES .................................................................. 6

3.1 SCHEDULE AND PROGRAMME OF WORKS ............................................................................................ 6

3.2 ROLES AND RESPONSIBILITIES/ MANAGEMENT STRUCTURE ................................................................... 6

3.2.1 General Service Supervisor Project Manager .................................................................... 6

3.2.2 Contractor’s Project Manager ........................................................................................... 7

3.2.3 Contractor’s Senior Technical Engineers ........................................................................... 7

3.2.4 Project Supervisor Construction Stage & Health and Safety Officer ................................. 7

3.2.5 Site Environmental Manager ............................................................................................. 8

3.3 METHODS OF CONSTRUCTION .......................................................................................................... 8

3.4 DESCRIPTION OF PLANT AND MATERIAL TO BE USED .......................................................................... 10

3.5 OUTLINE OF RESOURCE REQUIREMENTS ........................................................................................... 10

3.6 LOCATION OF CONTRACTOR COMPOUND .......................................................................................... 10

3.7 CONSTRUCTION ENVIRONMENTAL MANAGEMENT ............................................................................. 11

3.8 TIMING AND DURATION OF WORKS ................................................................................................. 11

3.9 COMPLETION OF WORKS ............................................................................................................... 11

APPENDICES

Appendix A Construction Environmental Management Plan

LIST OF FIGURES

Figure 1.1: Project location ..................................................................................................................... 3 Figure 2.1: Proposed enhancement works at Mulranny Pier ................................................................. 5 Figure 3.1: Location of contractor compound ...................................................................................... 12


MGE0627RP0005 F01 1

1 INTRODUCTION

1.1 OVERVIEW AND PURPOSE OF THIS REPORT

This report comprises the Construction Method Statement (CMS) for the Pier Enhancement project at Mulranny, Co. Mayo.

The village of Mulranny is located on the N59, approximately 16 km west of Newport. Mulranny Pier is situated 2.5 km south of the village and is accessed via a local road through the townland of Cushlecka (see Figure 1.1). The purpose of the pier enhancement project at Mulranny is to facilitate access and ease of vessel movement from Mulranny Bay area into and from Clew Bay. Mulranny Pier and slipway is located in-part within the Clew Bay Complex Special Area of Conservation (SAC) designated under the Habitats Directive for the protection of a range terrestrial, coastal, and marine Annex I habitats and Annex II species, including fish and marine mammals (Figure 1.1).

The proposed enhancement work includes the installation of a floating pontoon and access gangway, extension of the existing slipway, levelling and re-surfacing of an existing turning/ parking area, and installation of a pedestrian pathway. Further detail of the proposed project is presented in Section 2 below. The proposed enhancement works will be undertaken by Mayo County Council and an independent contractor under the supervision of a Mayo County Council General Service Supervisor.

This CMS is a working document and is based on information available at the planning stage for this project. Section 3 of this CMS outlines the construction approach and activities to be undertaken by Mayo County Council employees and the contractor. Contractor activities will include installation of the floating pontoon, gangway and piles. The CMS deals with the overall management and administration of a construction project as it is a project management tool.

This CMS has been prepared in support of the planning application for the proposed works on behalf of Mayo County Council in a response to a request for further information from An Bord Pleanála. It is confirmed that while the document is iterative and certain modifications and improvements may be made to same during the preparation for construction and to reflect pre-construction surveys, the project specific environmental measures proposed herein and in the Construction Environmental Management Plan (CEMP) (Appendix A) will require to be undertaken by the contractor appointed to carry out the pier enhancement measures if approved.

Once appointed, the contractor will provide a report outlining a Schedule of Contractor Commitments. The latter will document project duties and responsibilities of the contractor. The CMS will be updated throughout the pre-construction phases of the proposed development, and finalised once a contractor has been appointed and the Schedule of Contractor Commitments identified.

In addition to this CMS and CEMP, the application for authorisation to undertake pier enhancement works is supported by the following environmental assessment reports:

Environmental Impact Assessment Screening report (document reference: MGE0627Rp0003); and


MGE0627RP0005 F01 2

Stage 1 Appropriate Assessment Screening and Stage 2 Natura Impact Statement report (document reference: MGE0627Rp0004).

Screening for AA and NIS Addendum (document reference: MGE0627Rp0007).

It should be noted that this CMS report should be read with the CEMP report, the above listed environmental assessment reports, relevant project drawings and specifications. The CMS should also be read alongside the Schedule of Contractor Commitments, which will be compiled by the contractor once appointed, and will document project tasks and responsibilities of the contractor.

1.2 REPORT STRUCTURE

The CMS will be presented as follows:

Section 1 Introduction – Provides a background to the proposed pier enhancement works at Mulranny and briefly outlines the purpose and structure of this report.

Section 2 Proposed Project – Describes site location and planned activities associated with the proposed works.

Section 3 Construction Methods and Procedures – Describes methods and procedures to be adhered to during construction and are discussed under the following headings:

Section 3.1 Schedule and Programme of Works

Section 3.2 Timing and Duration of Works

Section 3.3 Roles and Responsibilities/ Management Structure

Section 3.4 Methods of Construction

Section 3.5 Description of Plant and Material to be used

Section 3.6 Outline of Resource Requirement

Section 3.7 Location of Contractor Compound

Section 3.8 Construction Environmental Management

Section 3.9 Completion of Works


MGE0627RP0005 F01 3

Figure 1.1: Project location


MGE0627RP0005 F01 4

2 PROPOSED PROJECT

2.1 PROJECT SITE LOCATION

The project site comprises a bitumen surfaced access road, hardcore parking and turning area, the existing concrete pier and slipway structure, and a cobble upper shoreline which grades into soft muddy sediments along the low shore which supports a scattering of moorings (Figure 2.1).

2.2 PROJECT DESCRIPTION

The floating pontoon will be constructed below the low water mark on the lower shore near the existing moorings (Figure 2.1). The pontoon will be attached to 5 No. pile structures which will be positioned into sediments in the lower intertidal area.

The gravel/ cobble surface landward of the cobble upper shoreline will be levelled and surfaced using locally sourced infill stone (hardcore) (see ‘Infill substrate area’ in Figure 2.1). A concrete anchor block will be positioned above the high water mark on this levelled hardcore surface. A pedestrian gangway leading to the floating pontoon will be secured to a concrete anchor block.

The existing turning/ parking area will be levelled and re-surfaced using concrete (see Figure 2.1).

A small concrete footpath will be installed between the gangway and the turning/ parking area.

The existing slipway, which runs alongside the pier and measures approximately 3 m wide and 29 m long, will be widened to approximately 6 m along its entire length (see Figure 2.1).


MGE0627RP005 F01 5

Figure 2.1: Proposed enhancement works at Mulranny Pier


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3 CONSTRUCTION METHODS AND PROCEDURES

3.1 SCHEDULE AND PROGRAMME OF WORKS

The proposed works will follow a staged process. The sequence of stages is outlined below. Parties involved in each stage are identified. Methods of construction for each stage are described in Section 3.3 below

Stage

1. Levelling of gravel/ cobble area landward of cobble shoreline – (Mayo County Council)

2. Installation of floating pontoon and piles – (Contractor [to be confirmed])

3. Surfacing of levelled area using hardcore – (Mayo County Council)

4. Levelling of gravel/ concrete surface at turning/ parking area, contractor compound set up– (Mayo County Council)

5. Positioning gangway anchor block – (Mayo County Council)

6. Installation of pedestrian gangway – (Contractor [to be confirmed])

7. Construction of retaining wall for slipway extension – (Mayo County Council)

8. Infill of slipway extension area using hardcore – (Mayo County Council)

9. On-site concrete casting – slipway surface – (Mayo County Council)

– turning/ parking area surface – (Mayo County Council)

– installation of footpath – (Mayo County Council)

10. Masonry works – slipway extension outer wall– (Mayo County Council)

– gangway anchor block– (Mayo County Council)

3.2 ROLES AND RESPONSIBILITIES/ MANAGEMENT STRUCTURE

This section sets out the roles and responsibilities of the principal parties involved in the construction of the proposed project. In addition, it outlines the lines of communication between the various parties. The responsibilities of the site staff are outlined below, and it is possible that some roles may overlap or be carried out by the same person.

3.2.1 General Service Supervisor Project Manager

The Mayo County Council General Service Supervisor for the works is responsible for:

(a) Liaison with contractor;

(b) The implementation of the CEMP;

(c) Management of the overall project programme;

(d) Co-ordinating the construction team/ contractors;

(e) Implementing the contractor’s Safety and Health Plan;


MGE0627Rp0005 F01 7

(f) Liaison with the contractor representative staff;

(g) Coordination of the Construction programmes; and

(h) Maintaining a project diary.

3.2.2 Contractor’s Project Manager

The contractor’s project manager for the works reports to the Mayo County Council’s General Service Supervisor Project Manager. The contractor’s project manager is responsible for:

(a) The implementation of the CEMP;

(b) Management of quality issues relating to the project;

(c) Co-ordinating the construction teams;

(d) Ensuring that method statements are in place;

(e) Implementing the contractor’s Safety and Health Plan; and

(f) Liaison with the Mayo County Council’s representative staff.

3.2.3 Contractor’s Senior Technical Engineers

The contractor’s senior technical engineers report to the contractor’s project manager, who in turn report to the General Service Supervisor Project Manager. The contractor’s senior technical engineers are responsible for:

(a) Implementing the CEMP;

(b) Materials procurement;

(c) Administration;

(d) Programming and planning;


(f) Maintaining a project diary.

3.2.4 Project Supervisor Construction Stage & Health and Safety Officer

The contractor will be appointed as the Project Supervisor Construction Stage (PSCS). The contractor will also appoint a Health and Safety Officer for the works who will report to the contractor’s project manager. He/she is responsible for:

(a) Carrying out the duties of Health & Safety during construction;

(b) Safety induction of all staff and personnel on site;

(c) Implementing the contractor’s Safety and Health Plan; and

(d) Auditing the site for safety and health issues and keeping relevant records.


MGE0627Rp0005 F01 8

3.2.5 Site Environmental Manager

The environmental officer is appointed by the contractor and reports to the General Service Supervisor Project Manager. He/ she is responsible for:

(a) Implementing the environmental requirements of the CEMP and updating it as necessary;

(b) Management of all environmental aspects of the construction works;

(c) Liaison with the site specialists (e.g. ecologist etc.);

(d) Ensuring all relevant mitigation measures are implemented as required;

(e) Ensuring all monitoring proposals are implemented as required;

(f) Reviewing monitoring results;

(g) Provision of Tool Box talks to Mayo County Council employees and contractors as required;

(h) Ad hoc environmental inspections;

(i) Liaison with Mayo County Council representative staff;

(j) Auditing the construction works from an environmental viewpoint;

(k) Maintaining regular contact and liaison with environmental specialists;

(l) Producing update reports on environmental compliance;

(m) Reporting on any non-compliances; and

(n) Implementing measures for ensuring close out of non-compliances.

3.3 METHODS OF CONSTRUCTION

Stage 1:

The artificial gravel/ cobble surface landward of the cobble upper shoreline will be levelled using a 13t excavator and 3t mini digger. This work will be undertaken by Mayo County Council employees.

Stage 2:

The levelled infill substrate area will be used by track mounted plant to access the lower shore to install the floating pontoon which will be positioned on the lower shore above the low water mark near existing moorings (see Figure 2.1). The floating pontoon will be attached to 5 No. pile structures inserted into sediments to depths of approximately 4m in the lower intertidal area. Piles will be driven into place using rotary boring (twisting into place). Rotary piling operations will be undertaken over approximately two working days using floating marine plant as required. The installation of the floating pontoon and pile structures will be undertaken by a Contractor to Mayo County Council. The contractor has yet to be appointed.


MGE0627Rp0005 F01 9

Stage 3:

The levelled gravel/ cobble area landward of the cobble shoreline (see Stage 1) will be surfaced with locally sourced hardcore infill stone using a 13t excavator and 3t mini digger (Figure 2.1). This work will be undertaken by Mayo County Council employees.

Stage 4:

The hardcore surface of the turning/ parking area will be levelled using a 13t excavator and 3t mini digger (see Figure 2.1). The temporary contractor compound will be set up at this location. This work will be undertaken by Mayo County Council employees.

Stage 5:

A pre-cast concrete anchor block (measuring approximately 2m x 2m x 2m) will be positioned above the high water line on the infill substrate area by Mayo County Council employees using a 3t mini digger (see Figure 2.1).

Stage 6:

A pedestrian gangway leading from the pontoon will be secured to the pre-cast concrete anchor block (see Figure 2.1). This work will be undertaken by the contractor.

Stage 7:

The existing slipway, which runs alongside the pier, measures approximately 3m wide and 29m long (see Figure 2.1). The slipway will be widened to approximately 6m along its entire length. The slipway will be constructed using a combination of pre-cast concrete blocks which will comprise the retaining wall will be constructed parallel and approximately 3 meters from the outermost wall of the existing slipway. This work will be undertaken by Mayo County Council employees using direct labour.

Stage 8:

The area between the retaining wall and the existing slipway will be infilled using locally sourced hardcore infill. This work will be undertaken by Mayo County Council employees using a 3t mini digger.

Stage 9:

The slipway infill area will be capped in-situ using poured concrete. The depth of the concrete layer of concrete layer will be 150 mm.

The levelled turning/ parking area will the location for the contractor compound. Once works are completed the area will be surfaced with a 150 mm layer of concrete and the area returned to original use.

A 1.0 m wide 150 mm depth concrete path will be cast in-situ between the parking area and the pontoon pedestrian gangway.

All concrete will be cast in-situ by Mayo County Council employees using direct labour.


MGE0627Rp0005 F01 10

Stage 10:

Mayo County Council employees using direct labour will ‘face’ the slipway extension outer wall and gangway anchor block using masonry stone typical of the locality.

All of the above works will be supervised by a Mayo County Council General Service Supervisor.

3.4 DESCRIPTION OF PLANT AND MATERIAL TO BE USED

A 13t excavator and 3t mini-digger, owned by Mayo County Council, will be used to undertake ground works (including levelling of infill area, turning/ parking area) and to position the anchor block. The excavator and mini-digger will be operated by suitably trained Mayo Council employees.

Track mounted plant will be used to position the flowing pontoon on the lower shore. The specification of track mounted plant will be confirmed once the contractor has been appointed.

Floating plant will be used to insert piles in the lower intertidal area. The specification for the floating plant will be confirmed once the contractor has been appointed.

3.5 OUTLINE OF RESOURCE REQUIREMENTS

Resources to be used as part of the proposed works include steel piles, locally sourced hardcore, concrete, and local masonry stone. Estimates of quantities of resources required are not available at the time of writing.

3.6 LOCATION OF CONTRACTOR COMPOUND

The contractor compound will be located within the turning/ parking area. The location of the contractor compound is illustrated in Figure 3.1. The compound will largely comprise materials storage areas, short term staff welfare facilities, parking for site vehicles, plant and materials storage for the proposed works. The compound site will remain in use for the duration of the works, and surfaced fit for purpose as a car park and turning area. The following measures will apply to the use of the compound area:

The storage of fuels, other hydrocarbons and other chemicals within the contractor compound shall be in accordance relevant legislation and with best practice, in particular:

− All fuel/ hydrocarbon/ chemical (fluid) storage areas shall be bunded to 110% of storage capacity.

− Storage of these materials within the compound shall be organised so as to be as far away from all water bodies as is practicable.

− The emergency response plan shall include arrangements for dealing with accidental spillage and relevant staff shall be trained in these procedures.

All site compounds will be fenced off and a silt fence erected and maintained on the site

boundary until construction completion, and


MGE0627Rp0005 F01 11

All excess material and waste will be removed off site and reused or disposed of at a licensed facility. No stockpiles are to be retained on site.

Further best practice pollution prevention control measures are provided in the CEMP (see Appendix A). These will also be adhered to when setting up and operating the site compound.

3.7 CONSTRUCTION ENVIRONMENTAL MANAGEMENT

See Appendix A.

3.8 TIMING AND DURATION OF WORKS

It is anticipated that the works will take approximately 8 weeks to carry out when all the permissions are obtained and subject to funding.

As outlined in the environmental assessment reports (MGE0627Rp0003 and MGE0627Rp0004) and CEMP (Appendix A) all construction works will be conducted outside of the wintering bird season in order in reduce the risk of significant disturbance impact to populations of wintering birds (i.e. construction activities will not occur between September – March inclusive).

3.9 COMPLETION OF WORKS

Following the completion of construction activities, the surrounding area shall be reinstated to a condition similar to, or better than the pre-works situation. Boundaries between the contractor compound and adjacent landholdings shall be re-established to the landowner’s satisfaction. A photographic survey of the completed works shall be carried out by Mayo County Council General Service Supervisor. Records of any utility diversions and their locations shall be maintained and filed appropriately. A final inspection of the completed works shall be carried out by a suitably qualified Engineer to ensure satisfaction with the quality of the works.


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Figure 3.1: Location of contractor compound

APPENDIX A

Construction Environmental Management Plan

rpsgroup.com

MGE0627CR0002

Mulranny Pier Enhancement Project - Construction Environmental Management Plan

June 2017

rpsgroup.com/ireland

Document Control Sheet

Copyright RPS Group Limited. All rights reserved. The report has been prepared for the exclusive use of our client and unless otherwise agreed in writing by RPS Group Limited no other party may use, make use of or rely on the contents of this report. The report has been compiled using the resources agreed with the client and in accordance with the scope of work agreed with the client. No liability is accepted by RPS Group Limited for any use of this report, other than the purpose for which it was prepared. RPS Group Limited accepts no responsibility for any documents or information supplied to RPS Group Limited by others and no legal liability arising from the use by others of opinions or data contained in this report. It is expressly stated that no independent verification of any documents or information supplied by others has been made. RPS Group Limited has used reasonable skill, care and diligence in compiling this report and no warranty is provided as to the report’s accuracy. No part of this report may be copied or reproduced, by any means, without the written permission of RPS Group Limited

Client: Mayo County Council

Project Title: Mulranny Pier Enhancement Project

Document Title: Construction Environmental Management Plan

Document No: MGE0627RP0006

Text Pages: 23 Appendices: -

Rev. Status Date Author(s) Reviewed By Approved By

F01 Final 21st June 2017 SM

PK GMcE JF

Mulranny Pier Enhancement Project

Construction Environmental Management Plan

Mulranny Pier Enhancement Project Construction Environmental Management Plan

MGE0627RP0006 F01 i

TABLE OF CONTENTS

1 INTRODUCTION ................................................................................................................ 1

1.1 OVERVIEW ..................................................................................................................................... 1

1.2 SCOPE OF DRAFT CONSTRUCTION ENVIRONMENTAL MANAGEMENT PLAN ............................................... 3

1.3 ROLES AND RESPONSIBILITIES/ MANAGEMENT STRUCTURE ................................................................... 4

1.3.1 General Service Supervisor Project Manager .................................................................... 4

1.3.2 Contractor’s Project Manager ........................................................................................... 4

1.3.3 Contractor’s Senior Technical Engineers ........................................................................... 5

1.3.4 Project Supervisor Construction Stage & Health and Safety Officer ................................. 5

1.3.5 Site Environmental Manager ............................................................................................. 5

2 EXISTING ENVIRONMENT ................................................................................................. 7

2.1 SITE DESCRIPTION ........................................................................................................................... 7

3 PROJECT DESCRIPTION ..................................................................................................... 9

3.1 DESCRIPTION OF THE PROPOSED WORKS ............................................................................................ 9

3.1.1 Nature and Extent of Proposed Works ........................................................................... 11

3.1.2 Construction Period and Sequence ................................................................................. 11

3.1.3 Construction Working Hours ........................................................................................... 12

3.1.4 Health and safety ............................................................................................................ 12

3.1.5 Welfare Facilities ............................................................................................................. 12

4 OBJECTIVES OF THE CONSTRUCTION ENVIRONMENTAL PLAN .......................................... 14

4.1 ENVIRONMENTAL MANAGEMENT PLANS .......................................................................................... 14

4.2 SITE ACCESS ................................................................................................................................. 14

4.2.1 Introduction ..................................................................................................................... 14

4.3 SURFACE WATER MANAGEMENT PLAN ............................................................................................. 16

4.3.1 Objectives ........................................................................................................................ 16

4.3.2 Mitigation and Control Measures ................................................................................... 16

4.3.3 Construction Phase.......................................................................................................... 18

4.4 ECOLOGY MANAGEMENT PLAN ....................................................................................................... 20

4.4.1 Objectives ........................................................................................................................ 20

4.4.2 Ecology Mitigation Measures .......................................................................................... 20

4.5 AIR AND DUST MANAGEMENT PLAN ................................................................................................ 21

4.5.1 Existing Air Quality Conditions ........................................................................................ 21


MGE0627RP0006 F01 ii

4.5.2 Mitigation Measures ....................................................................................................... 21

4.6 CONSTRUCTION WASTE MANAGEMENT PLAN .................................................................................... 22

4.6.1 Waste Management ........................................................................................................ 22

4.6.2 Mixed Waste.................................................................................................................... 23

4.6.3 Dry recyclable collection from welfare facilities ............................................................. 23

4.6.4 Waste Oil and Non-Liquid Oily Waste ............................................................................. 23

5 MONITORING ................................................................................................................. 24

5.1 OBJECTIVES ................................................................................................................................. 24

5.2 MONITORING REQUIREMENTS ........................................................................................................ 24

LIST OF FIGURES

Figure 1.1: Project location ..................................................................................................................... 2 Figure 3.1: Proposed enhancement works at Mulranny Pier ............................................................... 10 Figure 3.2: Location of Contractor compound ...................................................................................... 13


MGE0627RP0006 F01 1

1 INTRODUCTION

1.1 OVERVIEW

This document comprises the draft Construction Environmental Management Plan (CEMP) for the construction of the proposed pier enhancement works at Mulranny, Co. Mayo.

The village of Mulranny is located on the N59, approximately 16 km west of Newport. Mulranny Pier is situated 2.5 km south of the village and is accessed via a local road through the townland of Cushlecka (see Figure 1.1). The purpose of the pier enhancement project at Mulranny is to facilitate access and ease of vessel movement from Mulranny Bay area into and from Clew Bay. Mulranny Pier and slipway is located in-part within the Clew Bay Complex Special Area of Conservation (SAC) designated under the Habitats Directive for the protection of a range terrestrial, coastal, and marine Annex I habitats and Annex II species, including fish and marine mammals (Figure 1.1). The proposed enhancement works include the installation of a floating pontoon and access gangway, extension of the existing slipway which runs parallel to the existing pier, levelling and re-surfacing of an existing turning/ parking area, and installation of pedestrian pathway.

This report presents a project specific CEMP which outlines the environmental measures that are to be put in place during construction activity to ensure that the project is constructed in accordance with best practice and with the minimum impact on the surrounding environment. This draft CEMP has been prepared at this stage on behalf of Mayo County Council in a response to a request for further information from An Bord Pleanála in support of the planning application for the proposed development. It is based on the information available at the planning stage and may be subject to some revisions on appointment of a contractor. It is confirmed that while the document is iterative and certain modifications and improvements may be made to same during the preparation for construction and to reflect pre-construction surveys, the environmental measures proposed herein are required to be undertaken by the contractor appointed to carry out the pier enhancement measures.


MGE0627RP0006 F01 2

Figure 1.1: Project location


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1.2 SCOPE OF DRAFT CONSTRUCTION ENVIRONMENTAL MANAGEMENT PLAN

This draft CEMP outlines construction management procedures and management responsibilities relating to the proposed works. This draft CEMP details the environmental safeguards that will be implemented during the construction phase. The plan also includes the mitigation measures to be implemented to manage the potential environmental impacts that construction works may have on the surrounding environment. The draft CEMP has been prepared to ensure appropriate environmental management of specific aspects of the project, including the following:

Site access, Surface water management, Ecology, Landscape and visual, Materials storage,

Construction waste management plan, Air and dust management, Traffic management, and Site reinstatement – post construction.

The environmental measures outlined in this draft CEMP are based on the construction methods outlined in the Construction Method Statement (CMS) that accompanies this report (document reference; MGE0627Rp0005). The CMS is a working document and is based on information available at the planning stage of the proposed enhancement works and may therefore be subject to change. The proposed enhancement works will be undertaken by Mayo County Council employees and an independent contractor under the supervision of a Mayo County Council General Service Supervisor. Should the CMS be revised this CEMP will be updated to ensure that the project is constructed in accordance with best practice and with the minimum impact on the surrounding environment.

In addition to this CEMP the application for authorisation to undertake pier enhancement works is supported by the following environmental assessment reports:

Environmental Impact Assessment (EIA) Screening report (document reference: MGE0627Rp0003);

Stage 1 Appropriate Assessment (AA) Screening and Stage 2 Natura Impact Statement (NIS) report (document reference: MGE0627Rp0004); and

Screening for AA and NIS Addendum (document reference: MGE0627Rp0007).

It should be noted that this CEMP report should be read alongside the CMS report, the above listed environmental assessment reports, relevant project drawings and specifications, and the schedule of contractor commitments. The draft CEMP brings together the range of construction sequences and activities as well as the avoidance, reduction, control and mitigation measures and procedures described in the NIS for the project, in particular, those stipulated in the NIS Section 4.4.

This CEMP outlines clearly the construction methodology including constraints and mitigation measures that must be strictly adhered to should the proposed development and associated works be granted permission. It describes how Mayo County Council and the contractor will implement a site construction management system for this project to meet the specified contractual, regulatory and statutory requirements and NIS mitigation measures.


MGE0627RP0006 F01 4

All site personnel will be required to be familiar with the requirements of the draft CEMP as related to their role on site. The plan describes the project organisation and lists those procedures that will be developed and adopted on site.

The draft CEMP also defines the roles and responsibilities of the various parties to the construction contract.

1.3 ROLES AND RESPONSIBILITIES/ MANAGEMENT STRUCTURE

This section sets out the roles and responsibilities of the principal parties involved in the construction of the proposed project. In addition, it outlines the lines of communication between the various parties. The responsibilities of the site staff are outlined below, and it is possible that some roles may overlap or be carried out by the same person.

1.3.1 General Service Supervisor Project Manager

The Mayo County Council General Service Supervisor for the works is responsible for:

(a) Liaison with contractor;

(b) The implementation of the CEMP;

(c) Management of the overall project programme;

(d) Co-ordinating the construction team/ contractors;

(e) Implementing the contractor’s Safety and Health Plan;

(f) Liaison with the contractor representative staff;

(g) Coordination of the Construction programmes; and

(h) Maintaining a project diary.

1.3.2 Contractor’s Project Manager

The contractor’s project manager for the works reports to the Mayo County Council’s General Service Supervisor Project Manager. The contractor’s project manager is responsible for:

(a) The implementation of the CEMP;

(b) Management of quality issues relating to the project;

(c) Co-ordinating the construction teams;

(d) Ensuring that method statements are in place;


(f) Liaison with the Mayo County Council’s representative staff.


MGE0627RP0006 F01 5

1.3.3 Contractor’s Senior Technical Engineers

The contractor’s senior technical engineers report to the contractor’s project manager, who in turn report to the General Service Supervisor Project Manager. The contractor’s senior technical engineers are responsible for:

(a) Implementing the CEMP;

(b) Materials procurement;

(c) Administration;

(d) Programming and planning;


(f) Maintaining a project diary.

1.3.4 Project Supervisor Construction Stage & Health and Safety Officer

The contractor will be appointed as the Project Supervisor Construction Stage (PSCS). The contractor will also appoint a Health and Safety Officer for the works who will report to the contractor’s project manager. He/she is responsible for:

(a) Carrying out the duties of Health & Safety during construction;

(b) Safety induction of all staff and personnel on site;

(c) Implementing the contractor’s Safety and Health Plan; and

(d) Auditing the site for safety and health issues and keeping relevant records.

1.3.5 Site Environmental Manager

The environmental officer is appointed by the contractor and reports to the General Service Supervisor Project Manager. He/ she is responsible for:

(a) Implementing the environmental requirements of the CEMP and updating it as necessary;

(b) Management of all environmental aspects of the construction works;

(c) Liaison with the site specialists (e.g. ecologist etc.);

(d) Ensuring all relevant mitigation measures are implemented as required;

(e) Ensuring all monitoring proposals are implemented as required;

(f) Reviewing monitoring results;

(g) Provision of Tool Box talks to Mayo County Council employees and contractors as required;

(h) Ad hoc- environmental inspections;

(i) Liaison with Mayo County Council representative staff;


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(j) Auditing the construction works from an environmental viewpoint;

(k) Maintaining regular contact and liaison with environmental specialists;

(l) Producing update reports on environmental compliance;

(m) Reporting on any non-compliances; and

(n) Implementing measures for ensuring close out of non-compliances.


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2 EXISTING ENVIRONMENT

2.1 SITE DESCRIPTION

The study area consists of the existing pier structure which will be incorporated into the design of the proposed works, cobble dominated shoreline which gradually grades into soft muddy shore where the proposed pontoon will be located. The proposed works are in part within the Clew Bay Complex SAC and overlap with the following Annex I Habitat Qualifying Interests for which the SAC is designated; Shallow inlets and bays (Habitat code: 1160) and Mudflats and sandflats not cover by water at low tide (1140) (for full details see MGE0627Rp0004). The designated Annex I habitats of 1160 and 1140 for Clew Bay Complex SAC comprise a total of seven constituent community types. Three of the seven community types are located in the vicinity of the proposed works, namely 1) Sandy mud with polychaete and bivalves community complex, 2) Intertidal sandy mud with Tubificoides benedii and Pygospio elegans community complex and 3) Reef. The installation of pile structures and slipway will result in a relatively small, but permanent, loss of Sandy mud with polychaete and bivalves community complex habitat area in the lower intertidal. Furthermore, during the operational phase of the project the pontoon will rest on the sediment surface at low water causing compaction and further permanent loss of Sandy mud with polychaete and bivalves community complex habitat. During the construction phase, benthic communities in the vicinity of the works may be significantly impacted by the release and deposition of sediment, while during operational phase localised changes in hydrodynamic regime due to the installed structures altering local sediment depositional or erosional processes thereby affecting nearby benthic community types. There is potential for significant impacts to designated Annex II species Lutra lutra (Otter) (1355) and Phoca vitulina (Harbour Seal) (1365) as these highly mobile species may migrate into the area and interact with the proposed works. Impacts may include vehicle and construction noise disturbance and deterioration in water quality.

Habitats Directive Annex IV species previously recorded within the locality of the proposed Pier enhancement works include Common Dolphin (Delphinus delphis), Striped Dolphin (Stenella coeruleoalba), Bottle-nosed Dolphin (Tursiops truncatus), Cuvier’s Beaked Whale (Ziphius cavirostris), Sperm Whale (Physeter macrocephalus) and Otter (Lutra lutra). Potential impacts of the proposed work to these species are the same as those outlined above for Annex II marine mammal species.

Robust and effective mitigation measures outlined in this CEMP and the Stage 2 NIS report (document reference: MGE0627Rp0004) have been proposed for the avoidance and minimisation of impacts. As outlined in the Stage 2 NIS report the construction of the floating pontoon, piles, infill area and slipway extension will result in a loss of 400 m2 (or approx. 0.01%) of intertidal sandy mud habitat within the Annex I habitat of Mudflats and sandflats not covered by seawater at low tide 1140, a qualifying interest of Clew Bay Complex SAC. NPWS (20111) provides guidance on interpretation of the Conservation Objectives for Clew Bay Complex. The Conservation Objectives

1 NPWS. 2011. Clew Bay Complex SAC (site code: 001482) Conservation objectives supporting document- marine habitats and species. Version 1 June 2011. https://www.npws.ie/sites/default/files/publications/pdf/1482_Clew%20Bay%20Complex%20SAC%20Marine%20Supporting%20Doc_V1.pdf

https://www.npws.ie/sites/default/files/publications/pdf/1482_Clew%20Bay%20Complex%20SAC%20Marine%20Supporting%20Doc_V1.pdf

https://www.npws.ie/sites/default/files/publications/pdf/1482_Clew%20Bay%20Complex%20SAC%20Marine%20Supporting%20Doc_V1.pdf


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are in effect management targets for habitats and species in the SAC. NPWS guidance states that ‘continuous disturbance of each community type should not exceed an approximate area of 15%’. Given the relatively small proportional loss of habitat associated with the proposed pier enhancement works, potential impacts to Annex I Habitat are deemed to be not significant. It should be noted that this threshold of 15% as proposed by the NPWS can be considered conservative as the European Commission’s Article 17 reporting framework suggests that disturbance greater than 25% of the area of an Annex I habitat represents unfavourable conservation status (2011). Similarly mitigation measures listed this CEMP and the Stage 2 NIS report and best practice guidelines, including Guidance to Manage the Risk to Marine Mammals from Man-made Sound Sources in Irish Waters (NPWS, 2014), will prevent any significant negative impacts to Annex IV species.

It is therefore concluded, beyond reasonable scientific doubt, that the proposed project incorporating mitigation outlined in the CEMP and Stage 2 NIS will not give rise to significant impacts, either individually or in combination with other plans and projects, in a manner which adversely affects the integrity of any European site within the Natura 2000 network or species Annex IV protected species as a result of the proposed pier enhancement project at Mulranny.


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3 PROJECT DESCRIPTION

3.1 DESCRIPTION OF THE PROPOSED WORKS

The project site consists of the existing Mulranny Pier and slipway structure, which has been incorporated into the design of the proposed works, and a cobble upper shoreline which grades into soft muddy sediments along the low shore (Figure 3.1). Landward of the cobble upper shoreline is an artificial consolidated gravel/ cobble surface which in turn is bordered by an access road and turning parking area. The surface of the turning/ parking area is comprised of mixed consolidated gravel/ concrete.

The floating pontoon will be positioned below the low water mark on the lower shore near existing moorings (Figure 3.1). The pontoon will be attached to 5 No. pile structures inserted into sediments in the lower intertidal.

The artificial gravel/ cobble surface landward of the cobble upper shoreline will be levelled and surfaced using locally sourced infill stone (hardcore) (see ‘Infill substrate area’ in Figure 3.1). A precast concrete anchor block will be positioned above the high water mark on this levelled hardcore surface. A pedestrian gangway leading to the floating pontoon will be anchored to a concrete anchor block.

The existing turning/ parking area will be levelled and re-surfaced using concrete and set up of temporary contractor compound (see Figure 3.1).

A small concrete footpath will be installed between the gangway and the turning/ parking area.

The existing slipway, which runs alongside the pier and measures approximately 3m wide and 29m long, will be widened to approximately 6 m along its entire length (see Figure 3.1).


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Figure 3.1: Proposed enhancement works at Mulranny Pier


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3.1.1 Nature and Extent of Proposed Works

Using locally sourced hardcore infill stone the artificial gravel/ cobble surface landward of the cobble upper shoreline will be levelled using a 13t excavator and 3t mini digger (Figure 3.1).

When not in use the 13t excavator and 3t mini digger will be located in the temporary contractor compound (Figure 3.2).

The levelled infill substrate area will be used by track mounted plant to access the lower shore to position the floating pontoon on the lower shore near existing moorings (see Figure 3.1).

The floating pontoon will be attached to 5 No. pile structures inserted into sediments to depths of approximately 4m in the lower intertidal.

Piles will be driven into place using rotary boring (twisting in place). Rotary piling operations will be undertaken over approximately two working days by floating marine plant.

A pedestrian gangway leading from the pontoon will be secured to the pre-cast concrete anchor block (measuring approximately 2m x 2m x 2m).

The anchor block will be positioned above the high water line on the infill substrate area (see Figure 3.1).

The anchor block will be landscaped (faced) using masonry stone typical of the locality.

The turning/ parking area will be levelled using locally sourced hard-core stone and the temporary contractor compound will be set up at this location (see Figure 3.2).

The existing slipway, which runs alongside the pier, measures approximately 3m wide and 29m long, will be widened to approximately 6m along its entire length. The slipway will be constructed using a combination of pre-cast concrete blocks, locally sourced hard-core stone infill, concrete and locally sourced masonry.

A retaining pre-cast concrete block wall will be constructed parallel and approximately 3 meters from the outermost wall of the existing slipway. The area between the retaining wall and the existing slipway will be infilled using locally sourced hardcore. The infill area will be capped in-situ using poured concrete. The retaining wall will be faced using masonry stone typical of the locality.

A 1.0m wide 150mm thick concrete path will be cast in-situ between the parking area and the pontoon pedestrian gangway.

Once the proposed works are substantially complete, the temporary contractor compound will be dismantled and removed off site other than the materials to be used to finish the final surface of the carpark and turning area which is to be paved with concrete (150 mm depth).

3.1.2 Construction Period and Sequence

It is anticipated that the works will take approximately 8 weeks to carry out when all the permissions are obtained and subject to funding.


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As outlined in the environmental assessment reports (MGE0627Rp0003 and MGE0627Rp0004) and CMS Report (MGE0627Rp0005) accompanying this draft CEMP all construction works will be conducted outside of the wintering bird season in order in reduce the risk of significant disturbance impact to populations of wintering birds (i.e. construction activities will not occur between September – March).

3.1.3 Construction Working Hours

The hours of construction activity will be limited to avoid unsociable hours. Construction operations shall generally be restricted to between 08:00 hours and 20:00 hours Monday to Friday and 08:00 hours and 18:00 hours on Saturdays, with no Sunday or Bank Holiday operations proposed. Any works outside standard hours will be agreed in advance with the local authorities.

3.1.4 Health and safety

All activities performed shall be in accordance with the requirements of the Safety, Health and Welfare at Work Act 2005 (as amended) and regulations made under this Act.

The Mayo County Council General Service Supervisor and contractor project manager will supervise the design process and construction stage (PSDP and PSCS) in accordance with the Safety, Health and Welfare at Work (Construction) Regulations, 2013.

Risk assessments and method statements for all elements of the works will be made available to all employees prior to commencement of works.

3.1.5 Welfare Facilities

If required, temporary portable toilet facilities will be installed at the site contractor compound. These units will be maintained and the waste collected therein will be disposed of using an appropriately licensed contractor to an authorised treatment facility.


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Figure 3.2: Location of contractor compound


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4 OBJECTIVES OF THE CONSTRUCTION ENVIRONMENTAL PLAN

The key performance objective of this draft CEMP is to ensure compliance with environmental legislation and approvals, including minimising pollution and waste generation and minimising environmental impacts.

The objectives of the draft CEMP as described in the subsequent sections have been developed to identify, assess and satisfy the following contract performance criteria: The intent of the NIS must be satisfied and must be adhered to;

Requirements from key project stakeholders; and

The requirements of the contractor’s contract obligations must be satisfied in full.

4.1 ENVIRONMENTAL MANAGEMENT PLANS

This draft CEMP has been prepared to ensure the appropriate environmental management of specific aspects of the project, and document the aspects, impacts, safeguards and inform the monitoring requirements for each key environmental element.

The requirements outlined in each of the management plans below are a summary of key implementation constraints and requirements with which Mayo County Council and the contractor shall comply.

4.2 SITE ACCESS

4.2.1 Introduction

Construction traffic will require regular access to the site at varying times throughout the construction phase. It is necessary to put procedures in place to effectively manage construction related traffic both on and off site.

This site access plan will form the basis for the development of a detailed Construction Traffic Management Plan (CTMP), which will be developed subject to receipt of planning, in line with the requirements of Mayo County Council.

During construction, access to the site will be limited using a barrier to prevent public access, illegal dumping and use of off-road vehicles etc. There is an existing barrier at the site entrance and this is proposed to be retained. Vehicle and pedestrian access to and from the proposed site, including signage will be established in line with the requirements of Galway County Council.

Prior to the commencement of construction a fully detailed CTMP will be prepared by Mayo County Council. The aim of a CTMP is to put in place procedures to manage construction traffic effectively. The plan will consider construction traffic accessing the site via the public road network as well as traffic circulation within the construction site. It will also outline measures to enhance the efficient


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transportation of construction materials and machinery whilst minimising delay and disruption to the general traffic.

A typical CTMP will:

Identify sensitive areas (e.g. schools, homes and local settlements);

Be aware of road restrictions e.g. narrow roads, bridges with restrictions, etc.;

Identify the location of suitable parking facilities for private cars and plant;

Ensure there are designated vehicular routes in site with speed restrictions;

Ensure safe access and egress from site;

Gain permissions for any required road closures, diversions, etc., from the relevant bodies;

Consult with An Garda Síochána and relevant local authorities;

Schedule site deliveries outside of times of peak traffic volume; and

Ensure erection of the required signage as per Chapter 8 of the Traffic Signs Manual.

Careful traffic management procedures will minimize the overall level of disruption experienced. Mitigation measures may include:

Advanced publicity outlining the traffic management proposals and duration and giving advance warning of specific traffic management measures;

Adequate advance signing of the works; and

Using the existing road by construction vehicles at off-peak hours.

Other mitigations measures include: Road signage is to be put in place throughout the site to comply with the traffic management

plan. Signage will be cleaned and maintained regularly;

Public roads will be kept clean by sweeping when necessary;

All vehicles will be limited to an appropriate maximum speed to be determined in the traffic management plan; and

Access roads will be constructed in accordance with the contract documents, site layout drawings and detailed construction drawings.


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4.3 SURFACE WATER MANAGEMENT PLAN

This outline Surface Water Management Plan (SWMP) addresses the broad controls and strategies to be implemented on site to manage the surface water regime and to protect existing water quality, and is based on site knowledge at pre-planning stage.

The SWMP is an outline proposal only, representing a preliminary design, and therefore may be subject to change following further identification of ground conditions upon the commencement of excavation activities. The SWMP and associated drainage strategy can only be amended by improvement with regards to environmental protection and must take cognisance of all mitigation measures recommended within this outline plan and in the NIS.

4.3.1 Objectives

Sediment control is an important element of the preliminary design for the protection of existing water quality. The objectives of the SWMP are as follows:

Provide overall surface water management principles and guidelines for the construction phase Mulranny Pier Enhancement works;

Address erosion, sedimentation, attenuation and water quality issues; and

Present measures and management practices for the prevention and/or mitigation of potential downstream impacts.

There are no watercourses running through the site, however the site is situated within Clew Bay Complex SAC (Site Code: 001482). Therefore, it is imperative that water quality is protected during the course of the construction and operation of the proposed development.

The provision of a properly designed and constructed percussion/ rotary piling operation is a fundamental requirement for this project. The maintenance of existing water flows and the prevention of pollution, as a result of sediment runoff, during the construction phase is a key objective particularly with reference to the European sites. The protection of water quality and prevention of pollution events requires a sustained and concentrated input from Mayo County Council and the contractor with regard to the provision and maintenance of sediment control structures.

4.3.2 Mitigation and Control Measures

To minimise surface water impacts on and off-site, best management practices will be adopted for the construction phase of the Project.

4.3.2.1 Sediment Control

The main potential impact on water quality on site is the release of sediments into existing watercourses and marine environment. Silt and silt laden water/ contaminated water can be caused by various construction related activities, such as construction of a parking area, run-off from


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exposed ground, run-off from spoil storage areas, etc. Where runoff water is contaminated with silt or other pollutants such as oil, this water must not be pumped or allowed to flow directly or indirectly into surface waters or groundwater without treatment.

Sediment control will comprise a combination of silt fencing and dispersal drains. The following mitigation measures are proposed to reduce the potential impacts of the proposed development on quality.

4.3.2.2 Silt Fencing

A silt fence is made of a filter fabric that detains sediment-laden water, promoting sedimentation behind the fence. Silt fences are suitable for perimeter control, placed below areas of sheet flows discharge from the site. A silt fence will be installed at the seaward boundary of the turning/ parking area, as follows:

Silt fencing will be erected along the boundary of the turning/ parking area/ temporary compound location;

Silt fencing to be erected in accordance with Detailed Design and Manufacturers Guidelines;

An emergency supply of silt fencing will also be retained on site;

Allow sufficient space for runoff to pond behind the fence and to allow sediment removal works between silt fence and edge of the compound area; and

Choice of filter fabric to be based on conditions on site. The contractor (at Detailed Design Stage) is required to specify a filter fabric type that will allow free drainage and prevent clogging, while also retaining soil particles behind.

It should be noted that silt fences are not to be used in streams, channels or anywhere flow is concentrated.

Inspect silt fencing prior to forecast rain, daily during extended rain events, otherwise inspect weekly throughout the construction period;

Repair or replace split, torn, slumping or otherwise damaged fencing. Note manufacturers life span expectancy and replace when required; and

Sediment that accumulates behind the fence must be periodically removed in order to maintain its effectiveness. Sediment should be removed when the sediment accumulation reaches one-third of the trap capacity. Sediment removed during maintenance may be incorporated into earthworks on the site or disposed of offsite.

4.3.2.3 Percolation Areas

The proposed percolation areas will provide for storage and dispersal of site runoff to intact vegetation. Natural intact vegetation at these outfall points will provide a natural filter system or buffer zone for any remaining silt within the water.


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4.3.3 Construction Phase

The main construction related impact of the proposed development on water quality at the site is the release of sediments into the marine environment as result of land surface water run-off. While it is acknowledged there are currently no watercourses through the site, the following measures are best practice and will be adhered too. There is also a risk that sewage from site facilities or oils, cements or other construction materials may be discharged into the marine environment.

The following mitigation measures are proposed to reduce the impacts of construction of the proposed development on water quality:

All materials shall be stored at the temporary contractor compound and transported to the works zone immediately prior to construction;

The storage of fuels, other hydrocarbons and other chemicals within the contractor compound shall be in accordance relevant legislation and with best practice, in particular;

− All refuelling of machinery will take place within the contractor compound; − Mobile bowsers, tanks and drums should be stored in a secure, impermeable

storage area, away from drains and open water; − Drip trays and funnels will be used when transferring any oils or fuel from one

container to another; − All fuel/ Hydrocarbon/ Chemical (fluid) storage areas shall be bunded to 110% of

storage capacity for static tanks or a drip tray for mobile stores; − Storage of these materials within the compound shall be organised so as to be as far

away from all water bodies as is practicable; − Ancillary equipment such as hoses, pipes must be contained within the bund; − Taps, nozzles or valves must be fitted with a lock system; − Fuel and oil stores including tanks and drums should be regularly inspected for leaks

and signs of damage; − Only designated trained operators should be authorised to refuel plant on site; − Procedures and contingency plans need to be set up to deal with emergency

accidents or spills; and − The Emergency Response Plan shall include arrangements for dealing with

accidental spillage, such as an emergency spill kit with oil boom, absorbers etc. is to be kept on site in the event of an accidental spill and relevant staff shall be trained in these procedures.

− The collection of Non-Liquid Oily Waste (e.g., rags and oil contaminated materials) will be segregated from mixed waste and placed in approved containers for shipment; and

− These waste oil and lubricants will be collected by the contracted and licensed oil waste management company.

Fuels, lubricants and hydraulic fluids for equipment used on the site, as well as any solvents, oils, paints will be carefully handled to avoid spillage, properly secured against unauthorised access or vandalism, and provided with spill containment according to codes of practice;


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Wash-down water from exposed surfaces, will be trapped to allow sediment to settle out and reach neutral pH before clarified water is released to the drain system or allowed to percolate into the ground;

Raw or uncured waste concrete will be disposed of by removal to a licenced waste facility;

Any spillage of fuels, lubricants of hydraulic oils will be immediately contained and the contaminated soil removed from the site and properly disposed of to a licenced waste facility;

Continuous removal of excavated material for appropriate disposal off site is advised to limit the retention of spoil heaps on site. Any temporary spoil heaps will be stored on geotextile within the curtilage of the contractor compound;

All water used in the cleansing, testing or disinfection of structures or machinery shall be rendered safe prior to discharge to the environment, particularly any chlorinated water;

Where fill material is required, it will be recovered and reused from any excavations within the site. The importation of foreign material will be sourced from the same parent material as that found on site. In addition, the source of imported fill material will be checked for invasive plant species before use;

Release of suspended solids to all surface waters (including drainage channels) will be controlled by interception (e.g. silt fence and traps) and management of site run-off. Any surface water run-off will be treated appropriately to ensure that suspended solids levels are minimised; and

All construction related waste, e.g. plastics, cable ties, geotextile etc. will be collected and disposed of to a licenced waste facility so that they don’t enter the marine environment.

The following guidelines and documents will be consulted during the detailed planning of the works phase and the preparation of the site and project specific tasks: E. Murnane, A. Heap and A. Swain. (2006) Control of water pollution from linear construction

projects. Technical guidance (C648). CIRIA;

E. Murnane et al., (2006) Control of water pollution from linear construction projects. Site guide (C649). CIRIA;

H. Masters-Williams et al (2001) Control of water pollution from construction sites. Guidance for consultants and contractors (C532); and

DOMNR (1998). Fishery guidelines for Local Authority works. Department of the Marine and Natural Resources, Dublin.

Mayo County Council and Inland Fisheries Ireland (IFI) must be notified immediately of spillages or other accidents during construction which may threaten aquatic zones such as Clew Bay Complex SAC. All operators should have contact telephone numbers on-site for all relevant agencies (Local Authorities, The Heritage Service, National Museum of Ireland, Garda Síochána, etc.) in case of accidental damage to aquatic zones, archaeological sites, important wildlife habitats and other environmental features. In advance of any construction works taking place the detailed SWMP shall be agreed with the IFI.


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4.4 ECOLOGY MANAGEMENT PLAN

4.4.1 Objectives

The objective of this ecology management plan is to develop a construction methodology and programme that minimises the impact on site ecological integrity and composition.

4.4.2 Ecology Mitigation Measures

4.4.2.1 Working in or Near Sensitive Habitats

It is recommended that sensitive habitats adjacent to working areas are demarcated to indicate clearly that no access is permitted. Where construction activity takes place in habitats categorised as ecological receptors (i.e. valuable habitats) it is important that activity is limited to the footprint of the infrastructure and immediate surrounds. Areas where access is restricted should be demarcated.

This is particularly relevant to the Clew Bay Complex SAC (Site Code 200110) which supports: Mudflats and sandflats not covered by seawater at low tide [1140], Large shallow inlets and bays [1160], Phoca vitulina (Harbour Seal) [1365] and Lutra lutra (Otter) [1355].

4.4.2.2 Runoff and Sediment Control

An outline SWMP is presented in Section 4.3 above.

4.4.2.3 Special Measures for Harbour Seal and Common Bottlenose Dolphin

Noise disturbance from construction activities (including rotary drilling) associated with the proposed project may impact the following qualifying species of Clew Bay SAC: harbour seal (Phoca vitulina) and Common Bottlenose Dolphin (Tursiops truncatus). To minimise any potential interactions with marine mammals the following specific mitigation measures (or operational controls) and best practice guidelines will be adhered to during the construction phase: A marine mammal observer will keep watch for 30 minutes, prior to drilling activities, for any

signs of marine mammal activity. Boring will not commence if marine mammals are in close enough proximity (100 m) to the proposed project site;

In the event of any marine mammal species within the general area reacting to the sound emanating from the construction and/ or dredging activity, activities will be delayed until the animals are observed to be at least 100m from the development site; and

Should a marine mammal approach within 10m of the activity at any stage, activities will be stopped. Activities will not resume until the animals are observed to be at least 100 m from the site.


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Best practice guidelines, including Guidance to Manage the Risk to Marine Mammals from Manmade Sound Sources in Irish Waters (NPWS, 2014), will be adhered to with a view to preventing any negative impacts to Qualifying Interests of proximal European sites.

4.4.2.4 Special Measures for Invasive Species

Invasive species can be introduced into a location by contaminated vehicles and equipment, in particular tracked vehicles, which were previously used in locations that contained invasive species. Adapted from the Irish Water Guidance, 2016, the following best practice avoidance measures will help to contain and/or prevent the introduction of invasive species on a site as follows:

All plant and equipment employed on the proposed works (e.g. diggers, tracked machines, footwear etc.) must be thoroughly cleaned down using a power washer unit, and washed into a dedicated and contained area prior to arrival on site and on leaving site to prevent the spread of species such as Japanese knotweed Fallopia japonica and Himalayan Balsam Impatiens glandulifera. A sign off sheet must be maintained by the contractor to confirm cleaning;

For any material entering the site, the supplier must provide an assurance that it is free of invasive species;

Ensure all site users are aware of invasive species management plan and treatment methodologies. This can be achieved through “toolbox talks” before works begin on the site.

The following guidelines on non-native invasive plant species should be consulted:

Guidelines on the Management of Noxious Weeds and Non-Native Invasive Plant Species on National Roads (NRA, 2010);

Guidelines for the Management of Waste from National Road Construction Project (NRA, 2014);

Invasive Species Ireland guidance (http://invasivespeciesireland.com).

4.5 AIR AND DUST MANAGEMENT PLAN

4.5.1 Existing Air Quality Conditions

The air quality monitoring station closest to Mulranny Pier is Castlebar which is categorised as Zone D (towns and cities with a population between 5,000 and 15,000). Based on measurements of ozone, nitrogen dioxide, particulate matter less than 10 μm (PM10) and sulphur dioxide, air quality at the Castlebar monitoring station is classified as Good. Given that the site at Mulranny Pier is in a rural location it is probable that air quality in the area is better than that recorded at Castlebar (which is an urban environment).

4.5.2 Mitigation Measures

‘Good practice’ site procedures will be adopted to limit dust on the construction site and to minimise potential for secondary impacts due to dust and dirt being transported onto the surrounding road network. The degree of active control measures necessary to be adopted at the subject site will

http://invasivespeciesireland.com/


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depend on the time of year and the weather conditions prevalent at that time. The contractor will be required to prepare a dust minimisation plan which will include the following ‘good practice’ measures if required:

Approach roads and construction areas will be regularly cleaned and maintained as appropriate. Hard surface roads will be swept to remove mud and aggregate materials from their surface;

Wheel wash facilities and use of a mechanised road sweeper at the public road entrance if mud transfer is identified as an issue;

Dust suppression by water spray on access roads and other areas if dust becomes an issue;

Any un-surfaced roads will be restricted to essential traffic only;

Vehicles using the site road will have their speed restricted and this speed restriction must be enforced rigidly;

Public roads outside the site shall be regularly inspected for cleanliness, and cleaned as necessary;

Material handling systems and main site compound stockpiling of materials shall be designed and laid out to minimise exposure to wind. Water misting shall be applied as required if particularly dusty activities are required during dry or windy periods; and

All complaints to be reported to the General Service Supervisor Site Manager and contractor’s project manager, and also logged within an on-site register.

4.6 CONSTRUCTION WASTE MANAGEMENT PLAN

While the nature of the proposed development results in limited material being extracted from the site and limited amount of material delivered to the site, there is nonetheless a requirement to appropriately deal with any and all waste arising from the development. This Plan has been prepared to manage waste arising during the construction phase of the project.

4.6.1 Waste Management

Waste generated on-site will be managed implementation of the following:

Ordering the correct amount of materials to be delivered when needed;

Ensuring materials are not delivered to site damaged and unusable;

Reducing the amount of packaging used by suppliers;

Where possible, establish a ‘take back’ system with suppliers;

Ensuring wastes are handled and stored correctly; and

Limiting the amount waste going to landfill by reusing and recycling where possible.

Waste/ recyclables and the system for their management during the construction phase are detailed below.


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4.6.2 Mixed Waste

A 6 cubic metre open skip will be put in place to collect mixed waste;

This skip will accept plastic packaging, plastic piping, cardboard and timber waste;

Special care will be taken to ensure that no green waste or food waste will be disposed of in this skip. The purpose of this arrangement is to stop birds scattering food items across the site and therefore prevent vermin infestation;

The 6 cubic metre open skip will be located in a designated waste area on site; and

This material will be collected by contracted and licensed non-hazardous waste collectors.

4.6.3 Dry recyclable collection from welfare facilities

The site welfare facilities will be equipped with clear plastic bags and wheelie bins for the purpose of collecting dry recyclables. This will be strictly managed to prevent any food waste entering the dry recyclable stream;

Recycling wheelie bins will be located at the welfare facilities in the contractor compound. This material will be collected by contracted and licensed non-hazardous waste collectors.

4.6.4 Waste Oil and Non-Liquid Oily Waste

Waste oil collection will be provided at a purpose built double skinned tank stored at the contractor compound;

The collection of non-liquid oily waste (e.g., rags and oil contaminated materials) will be segregated from mixed waste and placed in approved containers for shipment; and

These materials will be collected by the contracted and licensed oil waste management company.


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5 MONITORING

5.1 OBJECTIVES

This summarises previously discussed specific monitoring activities required in order to ensure optimal environmental performance throughout the construction phase. Mayo County Council and the contractor will ensure that the specific monitoring requirements of this CEMP are adhered to for the duration of the construction works by carrying out regular inspections.

5.2 MONITORING REQUIREMENTS

Environmental audits must be carried out on site. The auditing requirements include but are not limited to the following:

Public access roads – The condition of the public roads in the vicinity of the development site shall be inspected daily by site management to ensure that the roads are in a safe and passable condition. Where necessary, potholes and road surface shall be filled in and surfaces made good where necessary. Roads will be cleaned as necessary;

Water quality monitoring will be required to be carried out on site, including daily visual inspections by a suitably qualified environmental engineer;

During the construction phase of the project, the detailed SWMP for the site will identify each silt control features with a reference number and an on-site quality system of maintenance and monitoring will be implemented. Compliance will be monitored in the form of an audit checklist;

Works within or in close proximity to Clew Bay SAC will be monitored to ensure that the mitigation measures proposed in the NIS are implemented and that the conservation interests of the European site are effectively protected during the construction phase of the works; and

Contractor’s compound to be monitored for appropriate storage of materials and appropriate adherence to recommended practices.

mulranny pier enhancement project - construction method statement · 2020. 7. 14. · construction...

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