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Dublin Port CompanyDumping at Sea Permit S0004-01

Annual Environmental Report 2016

rpsgroup.com/ireland

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DUBLIN PORT COMPANY

DUMPING AT SEA PERMIT S0004-01

ANNUAL ENVIRONMENTAL REPORT, 2016

DOCUMENT CONTROL SHEET

Client Dublin Port Company Project Title Dumping at Sea Permit – S0004-01

Document Title Annual Environmental Report, 2016 Document No. IBE0966_DaS Permit AER 2016

This Document Comprises

DCS TOC Text No. of Tables No. of Figures No. Of Appendices

1 1 2051 0 7 7

Rev. Status Author(s) Reviewed By Approved By Office of Origin Issue Date 0 Final G.McKillen R.Barr A.Barr Belfast 20/01/17 1 Final Rev 1 G.McKillen R.Barr A.Barr Belfast 06/03/17 2 Final Rev 2 G.McKillen R.Barr A.Barr Belfast 27/03/17

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DAS Permit S0004-01 AER 2016

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Table of Contents

1 SECTION A: INTRODUCTION ............................................................................................ 6

2 SECTION B: REGISTER/LOG OF LOADING AND DUMPING AT SEA ACTIVITIES ..... 8

3 SECTION C: OSPAR DUMPING REPORT ...................................................................... 11

4 SECTION D: MARINE POSITIONAL LOG .........................................................................14

5 SECTION E: REPORTED INCIDENTS SUMMARY ........................................................... 15

6 SECTION F: COMPLAINTS SUMMARY ........................................................................... 18

7 SECTION G: MONITORING SUMMARY ............................................................................22

8 SECTION H: STATEMENT OF MEASURES IN RELATION TO PREVENTION OF ENVIRONMENTAL DAMAGE AND REMEDIAL ACTION .................................................... 30

9 SECTION I: ENVIRONMENTAL LIABILITIES RISK ASSESSMENT REVIEW .............. 31

10 SECTION J: ANY OTHER ITEMS SPECIFIED BY THE AGENCY (EPA) ...................... 32

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List of Appendices:

Appendix 1.1– Map of Loading areas

Appendix 1.2 – Freeway Data Sheet

Appendix 2.0 – Freeway’s Signed Dumplogs

Appendix 3.1 – Sediment analysis at Dumpsite

Appendix 3.2 – Turbidity Data

Appendix 4.1 – May 2016 Sediment Chemistry

Appendix 4.2 – May 2016 Sediment Sampling Locations

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1 SECTION A: INTRODUCTION Dublin Port is situated on the River Liffey which flows through the City of Dublin between the Great South Wall and North Bull Wall before entering Dublin Bay; see Figure 1.1, Dublin Port Estate. In order for Dublin Port to maintain their navigational channel at the advertised depth of -7.8m, they must carry out regular maintenance dredging.

Figure 1.1: Location of Dublin Port Estate

Dublin Port Company (DPC) was granted a dumping at sea permit from the Environmental Protection Agency (EPA) in 2011. The register number of the permit granted is S0004-01. This allows DPC to load dredged material and to dump the dredge material from Dublin Port within the licensed dumpsite at the Burford Bank in outer Dublin Bay.

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As part of the Dumping at Sea Permit (DaS) conditions, there is a requirement to submit an Annual Environmental Report (AER) every year (by 31st March) under condition 7.7 which states:

“The permit holder shall submit electronically to the Agency, by the 31st March of each year an AER covering the previous calendar year. This report shall include as a minimum the information specified in Schedule C: Annual Environmental Report of this permit and shall be prepared in accordance with any relevant guidelines issued by the Agency or as otherwise prescribed by the Agency”

This document constitutes the AER for the period 1st January 2016 to 31st December 2016. Within this time frame, a maintenance dredging campaign was carried out over a period of 42 days from 20th June 2016 to 31st July 2016.

The minimum reporting requirements are set out in Schedule C of the permit. These are;

1. Register/log of loading and dumping at sea activities2. OSPAR dumping report3. Marine positional log4. Reported incidences summary5. Complaints summary6. Monitoring summary7. Statement of measures in relation to prevention of environmental damage and remedial action 8. Environmental Liabilities Risk Assessment Review9. Any other items specified by the Agency (EPA)

This AER is set out in accordance with the headings as specified in Schedule C of the Dumping at Sea Permit Reg. No. S0004-01.

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2 SECTION B: REGISTER/LOG OF LOADING AND DUMPING AT SEA ACTIVITIES

Boskalis Westminster was appointed by DPC as the dredging contractor to carry out the maintenance dredging works. The work comprised the loading of material dredged from the sea bed and then dumping it at a licensed offshore dumpsite.

The 2016 campaign is the second maintenance dredge that has taken place since the dumping at sea permit was granted in 2011. Before this campaign, maintenance dredging was carried out in 2012. The 2016 Maintenance dredging campaign took place over a period of 42 days from 20th June 2016 to 31st July 2016.

The DaS permit requires DPC to ensure that the dredging contractor records the following information during each trip which its vessel carries out:

The Vessel name

The Source of the material (latitude and longitude)

The date, time, location and position at which the voyage, for the purpose ofdumping, began

The date, time, location and position at which dumping began

The date, time, location and position at which dumping ended

The quantity , stated in metric tonnes, of the substance or material dumped

Logged vessel track record data

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The areas covered by the DaS Permit are shown in Appendix 1.1. Please note that Areas B006 and B007 were not dredged as part of the 2016 maintenance dredging campaign.

A map showing the location of the Dumpsite is provided in Figure 2.1.

Figure 2.1: Dumpsite Location

The Dredge Companies Log of loading and dumping at Sea activities is provided in Appendix 2.

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DREDGING VESSEL INFO:

The vessel used to carry out the maintenance dredging in the 2016 campaign was the Freeway. This Trailing Suction Hopper Dredger owned by Boskalis was built in 2014 and is capable of carrying 4000mᶟ dredge material per trip. The Equipment sheet for the Freeway is included in Appendix 1.2.

DREDGING TECHNIQUE:

Trailing suction hopper dredgers are equipped with one or two trailing suction heads. When the ship reaches the location requiring dredging, they reduce speed and lower the suction heads to the seabed. The trailing suction head moves slowly over the bed, collecting the sand/silt in a similar way to a giant vacuum hoover. The water and material mix is then pumped up the arm of the suction head to the ship where it is stored in the hopper. Once full, the dredger retracts its suction head and begins to sail slowly to the dumpsite.

When in position over the dumpsite, the ship slowly sails in the desired direction as doors in the underside of the vessel open up and the material is released from the hopper. This allows the operators to control accurately where the material is deposited.

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3 SECTION C: OSPAR DUMPING REPORT The OSPAR report for the 2016 campaign is included in this section of the report.

The OSPAR dumping report has been sent separately to the Marine Institute as requested by EPA.

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S0004 - 01 OSPAR RETURN 2016Permit No. S0004-01

Date of issue 28th July 2011Location of dredging (Port) Dublin PortAmount permitted (tonnes) 4,000,000

Capital or maintenance? Maintenance

Outline coordinates for dredging area (Dec degWGS84)

Date of dredging (from - to) 20th June 2016 to 31st July 2016Method of dredging Trailer Suction Dredger (Freeway)

Dumpsite Burford Bank

WASTES DUMPEDIf permit relates to dredge sediments please complete

section A. Otherwise, complete section BA. DREDGED SEDIMENTS

(a) Specification of waste (e.g. mud, silt, sand etc.)(b) Derived from harbour, estuary or open water?(c) Total quantity of wastes dumped (tonnes)?(d) Details of any chemical, toxicity and/or other testing carried

out on these sediments. (Reports to be attached asseparate documents. Include report references, date of analysis, contractors.)

(e) Please provide a map of the area dredged with chemical analysis sampling stations indicated. Please include detailsof quantities dredged from specific areas.

(g) What monitoring has taken place and by whom? Please attach report.

B. OTHER WASTES(a) Specification of waste(b) Derived from harbour, estuary, open water or other (please

specify)?(c) Total quantity of wastes dumped (tonnes)(d) Details of any chemical, toxicity and/or other testing carried

out on this waste(reports to be attached as separate documents)

53° 20.72'N 06° 12.75'W ,53° 20.69'N 06° 12.45'W, 53° 20.82'N 06° 12.43'W, 53° 20.83'N06° 12.74'W, 53° 20.72'N 06° 12.62'W, 53° 20.73'N 06° 12.74'W, 53° 20.69'N 06° 12.45'W, 53° 20.69'N 06° 12.43'W, 53° 20.69'N 06° 12.39'W, 53° 20.69'N 06° 12.25'W, 53° 20.69'N06° 12.23'W, 53° 20.69'N 06° 12.24'W, 53° 20.69'N 06° 12.18'W, 53° 20.68'N 06° 12.18'W, 53° 20.70'N 06° 12.19'W, 53° 20.71'N 06° 12.02'W, 53° 20.88'N 06° 12.00'W, 53° 20.89'N06° 12.92'W, 53° 20.80'N 06° 12.87'W, 53° 20.69'N 06° 12.88'W, 53° 20.71'N 06° 12.57'W, 53° 20.67'N 06° 12.40'W, 53° 20.70'N 06° 12.45'W, 53° 20.75'N 06° 12.49'W, 53° 20.86'N06° 12.49'W, 53° 20.65'N 06° 12.00'W, 53° 20.88'N 06° 12.58'W, 53° 20.57'N 06° 12.05'W, 53° 20.72'N 06° 12.75'W, 53° 20.64'N 06° 12.85'W, 53° 20.64'N 06° 12.89'W, 53° 20.63'N06° 12.90'W, 53° 20.55'N 06° 12.87'W, 53° 20.54'N 06° 12.87'W

Silt and sandHarbour, Estuary, Open water

749,793

Appendix 4.1 of the S0004-01 AER 2016 contains sediment chemistry results for loading locations.

n/a

n/a

Contained in Appendix 4.2 of S0004-01 AER 2016

Marine Mammal Observers present (attached as separate report) and Turbidity Levels Monitored

(Appendix 3.2 - S0004-01 2016 AER).

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(e) Please provide a map of the area dredged with chemical analysis sampling stations indicated. Please providedetails of specific areas and quantities dredged.

(f) What monitoring has taken place and by whom? Pleaseattach report.Other relevant information

C. DUMPING AREA :Note: EACH INDIVIDUAL DUMPSITE

REQUIRES SEPARATE ENTRYDumpsite A

(a) LocationCo-ordinates (minimum of 4): Lat (decimal degrees - WGS 84) Long (decimal degrees-WGS 84)06°03.00' W 53°20.07' N06°01.82' W 53°20.07' N06°01.82' W 53°19.17' N06°02.71' W 53°19.17' N06°03.00' W 53°19.38' N

(b) Quantity of material dumped here(c) Origin of material (eg berths, fairway etc)

(d) Depth (metres)(e) Distance from coast (km)

(f) Tidal flowsDirection (degrees)

(g) Maximum speed (m/s knots)Method of dumping (if more than one vessel involved, givethe range of loads and discharge conditions)

(h) Vessel(s) load (tonnes)

(i) Manner of discharge from vessel

(ii) Rate of discharge (te/day)(iii) Speed of vessel while dumping (m/s or knots)(iv)

Residual Water Movements

Instantaniously from vessel's hull

Average: 13,260Between 1-3 Knots

Based on results of numerical simiulation, the averagespring residual currents in the area of the dumpsite do not generally exceed 0.45m/s under normal conditions. Current direction ranges between North to South and South to West depending on the exact location in the dumpsite.

Approx. 7KM due East from mouth of Dublin Port

13° NMax. speed: 0.86 n/s

Instantaniously from vessel's hull

4,320 empty

n/a

Burford Bank, Outer Dublin Bay

749,793

Loading areas covered by DAS Permit S0004-01 Zones B006 and B007 were not dredged.

12.7-24.3

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4 SECTION D: MARINE POSITIONAL LOG (LATITUDE AND LONGITUDE COORDINATES GIVEN IN DEGREES AND DECIMAL MINUTES)

The Marine Positional Log is provided in Appendix 2.

The location of the areas dredged are presented in Appendix 1.1. Areas B006 and B007 shown in Drawing 32-1010-05/04, were not dredged during the 2016 campaign.

The co-ordinates of the start and end of Dumping points were plotted on a map; (Figure 4.1). These co-ordinates were taking from the Freeway’s Signed Dump log which is included in Appendix 2.

Figure 4.1: Map Showing Start Points of Dumping

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5 SECTION E: REPORTED INCIDENTS SUMMARY There were no incidents in the 2016 Maintenance dredging campaign. However, this AER includes incidents that occurred in the 2012 dredging campaign but that were only discovered or report in 2016.

Included in this section is the Incidents Register for 2016.

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Dumping At Sea Permit S0004-01 Incidents Register

This Document complies with Condition 7.4 of the above Permit S0004-01, which is the requirement for Dublin Port Company to maintain an Incidents Register.

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Table 1 List of Incidents relating to Permit S0004-01 Incident ID no.

Date of Incident

Time of Incident

Date of contacting OEE regarding incident

Nature of Incident Corrective Action taken Impact (if any) on marine environment resulting from Incident

1 During Maintenance Dredging Campaign 2012

- 2016 Non-compliance with Condition 3.4 of DAS Permit.

DPC took corrective action by recording the non-compliance as incidents.

No environmental impact occurred due to this incidence. Incident Report was issued to EPA on 9th September 2016 An addendum to this Incident Report was issued to EPA on 6th October 2016 The Incident Report and Addendum Report are included in the Incidents File.




No environmental impact occurred due to this incidence. Incident Report was issued to EPA on 9th September 2016 An addendum to this Incident Report was issued to EPA on 6th October 2016. The Incident Report and Addendum Report are included in the Incidents File.




No environmental impact occurred due to this incidence. Incident Report was issued to EPA on 9th September 2016. An addendum to this Incident Report was issued to EPA on 6th October 2016. The Incident Report and Addendum Report are included in the Incidents File.

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6 SECTION F: COMPLAINTS SUMMARY The complaints received by Dublin Port company and the Office of Environmental Enforcement, EPA are recorded in the complaints registers which included in this section of the report.

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Dumping At Sea Permit S0004-01 Complaints Register

This Document complies with Condition 7.5 of the above Permit S0004-01, which is the requirement for Dublin Port Company to maintain a Complaints Register. The complaints register compiles complaints related to Permit S0004-01 which were lodged directly with the Office of Environmental Enforcement, Environmental Protection Agency (Table 1) and complaints related to Permit S0004-01 which were lodged directly with Dublin Port Company (Table 2).

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Table 1 Complaints Received by Office of Environmental Enforcement, EPA relating to Permit S0004-01

Complaint IDno.

Date of Complaint

Time of Complaint

Method ofcontacting OEE, EPA

Name ofComplainant

Nature of Complainant Action Taken by DPC

COM0DAS02 9/5/2016 Information not

provided by OEE

Information not provided by OEE

Confidential Query regarding use of Permit S0004-01 for disposal of contaminated dredge spoil

Response documents issued to EPA on 1st June 2016 17th June 2016 30th June 2016 6th July 2016 12th July 2016 (Response Document included in Complaints Register File)

COM0DAS01/03 23/5/2016 Information not provided by OEE

Letter emailed to OEE

Mr. Peadar Farrell - Nature of dredgedmaterial

- Capping of class 2material

- Dumping of materialwithin dumpsite

- Tonnages of materialdumped at dumpsite

- Monitoring results andrecords

Response documents issued to EPA on 1st June 2016 17th June 2016 30th June 2016 6th July 2016 12th July 2016 (Response Document included in Complaints Register File)

COM0DAS04/05 21/7/2016 Information not provided by OEE

Letter emailed to OEE

Mr. Peadar Farrell Complaint that loading as part of the 2016 maintenance dredging campaign took place outside the licensed areas.

Response document issued to EPA on 2nd August 2016 (Response document included in Complaints Register File)

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Table 2 Complaints Received by Dublin Port Company relating to Permit S0004-01 ComplaintID no.

Date ofComplaint

Time ofComplaint

Method of contacting DPC

Name ofComplainant

Nature of Complainant Action Taken by DPC1 13/04/2016 - email Claire Kavanagh, Irish

Underwater Council Can Irish Underwater Council be informed of upcoming dredging campaigns at same time as EPA is informed?

Email sent to Ms. Kavanaghon 18th April 2016. Emailoutlines that DPC must informEPA of upcoming maintenancedredging campaigns 14 daysin advance of start date. DPC advise Ms. Kavanagh that she will be informed of start date after EPA have been notifiedby DPC.

Email provided in complaints file. 2 22/09/2016 6.50pm email Louise Gilligan, Irish

Underwater Council Ms. Gilligan complains that the email sent by Ms. Kavanagh on 13 April was not acted upon as Ms. Kavanagh did not receive any notification from DPC in advance of maintenance dredging campaign starting.

DPC responded to Ms. Kavanagh by email on 18th April 2016. Email provided in complaints file. DPC request Irish Whale and Dophin Group to assist with the response to this complaint.

3 22/09/2016 6.47pm email Louise Gilligan, Irish Underwater Council

Ms. Gilligan enquires as to how the marine mammals observations worked during the 24 hour dredging as part of the 2016 maintenance dredging campaign.

DPC request Irish Whale and Dophin Group to assist with the response to this complaint.

4 4/10/2016 16.29 email Louise Gilligan, Irish Underwater Council

Ms. Gilligan enquires as to when a response to her email sent on 22/9/2016 will be answered.

DPC issue a response to Louise Gilligan, Irish Underwater Council on 6th October 2016. The email contains an attachment document which was produced by the Irish Whale and Dolphin Group. The response from DPC issued to Irish Underwater Council on 6/10/2016 is included in the complaints file.

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7 SECTION G: MONITORING SUMMARY The Monitoring requirements for the Loading Areas and Dumping Site are set out in Schedule B of the Dumping at Sea Permit. The following monitoring took place in 2016 as required by the Permit.

Sediment Monitoring at Dumping Site

To comply with the dumping at sea permits monitoring regulations, sediment samples were taken from the dumpsite in August 2016 after the maintenance dredge campaign had been completed. Figure 7.1 shows the locations of where samples were taken for sediment analysis 2016. The chemical results of the sediment samples are shown in Appendix 3.1.

Figure 7.1: Post Dump Sediment Analysis locations

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Bathymetric Monitoring at Dumping Site

To monitor the bed depth at the Burford Bank dumpsite and to allow comparison to take place, bathymetric surveys were taken before and after the dumping took place in the area. Figures 7.2, 7.3 and 7.4 show images from the multibeam bathymetry survey:

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Figure 7.2: Sea Bed Bathymetry April 2016 Pre-dump

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Figure 7.3: Sea Bed Bathymetry August 2016 Post-dump

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Figure 7.4: Sea Bed Bathymetry November 2016 Post-dump

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Monitoring within Dublin Port

Sediment analysis took place within the port in 2012 and 2015 and the result of this analysis is contained within their respective AER’s.

To monitor the water quality within Dublin Port during the loading procedures, equipment was set up at East Link Bridge, Poolbeg Sludge Jetty and North Bank Light in the harbour area to measure turbidity during the dredging campaign. Measurements were usually made every 15 minutes. The locations of these monitoring points are shown in Figure 7.5:

Figure 7.5: Turbidity Monitoring Locations within Dublin Port

During dumping, turbidity monitoring took place in the area of the Burford bank dumpsite. This was to ensure the plume of sediment being created by dumping never created excessive turbidity within the area as this could have harmful environmental impacts. A survey boat sailed along 4 different fixed paths (transects) while taking measurements every few seconds near the surface of the water. These transects were located inside and outside the dump site, to the north and south and are represented in Figure 7.6.

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Figure 7.6Turbidity Monitoring Transects location

Graphs of the turbidity data recorded during the 2016 dredging campaign from both the loading and dumping locations are included in Appendix 3.2.

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Summary of the Marine Mammal Observers report: Marine mammal observation was carried out between 20th June to 31st July 2016 (42 days) while the loading and dumping procedures were ongoing. This was carried out by the Irish Whale and Dolphin Group (IWDG). To ensure that no animals were within a 500m area of the Freeway, when possible, the MMOs carried out a minimum of 30 minutes of observation prior to the commencement of activities.

During the 2016 campaign, there were a total of 134 marine mammal sightings. The most commonly observed species was the Grey seal, constituting 76/134 sightings. 61% of the total sightings were recorded in the 30 minutes prior to the commencement of dredging and dumping activities.

A total of three delays to the Freeway’s operation were instigated by the MMOs during the project. Two of these occurred due to a mammal being sighted in the area in which activity was due to begin. The other occurred as the weather conditions weren’t suitable to carry out a pre observation.

The conclusion of the IWDG’s report was that it was “highly unlikely that the dredging and dumping activities had any significant impact on marine mammals in the area and at worst may have caused temporary displacement of some individuals.”

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8 SECTION H: STATEMENT OF MEASURES IN RELATION TO PREVENTION OF ENVIRONMENTAL DAMAGE AND REMEDIAL ACTION

It was identified that one of the main potential environmental impacts which could occur during the dredging campaign was how the operation would affect the marine mammals which frequent the Dublin Bay area.

To ensure that no detrimental long term effects occurred on these marine mammals, Marine Mammal observers monitored all dredging operations.

The complete Marine Mammal Observers Report can be found in the following link:

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gareth.mckillen

Stamp


9 SECTION I: ENVIRONMENTAL LIABILITIES RISK ASSESSMENT REVIEW

An environmental Liabilities Risk Assessment is no longer required as part of the AER (email from EPA OEE to DAS permit holders dated 31st January 2017).

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10 SECTION J: ANY OTHER ITEMS SPECIFIED BY THE AGENCY (EPA)

In 2016 no further items were requested by the EPA to Dublin Port for incorporation into the AER.

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APPENDIX 1.1

Map of Loading Areas

(Please note: Areas B006 and B007 were not dredged as part of the 2016 Maintenance Dredging Campaign)

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APPENDIX 1.2

Freeway Data Sheet

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MAIN DATA

Gross tonnage 4,320

Length overall 92.10 m

L.p.p. 84.87 m

Breadth 19,00 m

Moulded depth 7.25 m

Max. draught Int. load line 5,93 m/ DWT 5392

Max. draught dredging 6,82 m/ DWT 6750

Hopper capacity 4,500 m3

Suction pipe diameter 900 mm

Max. dredging depth 30 m

Sailing speed loaded 11 kn

Total installed power 9,472 kW

Sand pump output 1,825 kW

Jet pump output 2*746 kW

Pump ashore output 3,650 kW

Propulsion power sailing 2*1,491 kW

Bow thruster 500 kW

EQUIPMENTSHEETFREEWAYTRAILING SUCTION HOPPER DREDGER

CONSTRUCTION/CLASSIFICATION

Built by Shipkits B.V.

Year of construction 2014

Classification I X HULL X MACH X Hopperdredger. Unrestricted Navigation. Dredging within 15 miles from shore or within 20 miles from port; or dredging over 15 miles from shore with a significant waveheight restriction to 2.5 m. X AUT-UMS

FEATURES

Degassing system installed.

Open bottom doors remain above the flat bottom of the vessel enabling very shallow dumping.

Highly manoeuvrable using rudder propellers.

Fully computerised engine room with certificate for unattended operation.

Automatic discharge valve can be fitted into the overflow.

Discharging through bottom doors, shore discharge and rainbow nozzleFully compliant with the latest international requirements such as modern engines with low emissions.

State of the art technology to minimize environmental impacts.

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The

info

rmat

ion

cont

aine

d in

this

dat

a sh

eet i

s fo

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idan

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ses

only

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ange

s. ©

Bos

kalis

. A

ll rig

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rese

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.

Royal Boskalis Westminster N.V.PO Box 43 3350 AA Papendrecht The Netherlands

T +31 78 69 69 000F +31 78 69 69 555

[email protected] www.boskalis.com

01

— 2

01

5

SIDE VIEW

TOP VIEW DECK LEVEL

FREEWAYTRAILING SUCTION HOPPER DREDGER

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APPENDIX 2.0

Freeway’s Signed Dumplogs

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