Annual Environmental Report 2016

Agglomeration Name: Shanganagh

Licence Register No. D0038-01

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Contents

Section 1. Executive Summary and Introduction to the 2016 AER 2

1.1 Summary Report on 2016 3

Section 2. Monitoring Reports Summary 4

2.1 Summary report on monthly influent monitoring 4

2.2 Discharges from the agglomeration 5

2.3.1. Ambient Monitoring Summary 6

2.4 Data collection and reporting requirements under the UWWTD 6

2.5 Pollutant Release and Transfer Register (PRTR) - report for previous year 6

Section 3. Operational Reports Summary 7

3.1 Treatment Efficiency Report 7

3.2 Treatment Capacity Report 7

3.3 Extent of Agglomeration Summary Report 8

3.4 Complaints Summary 8

3.5 Reported Incidents Summary 9

3.6 Sludge / Other inputs to the WWTP 10

Section 4. Infrastructure Assessments and Programme of Improvements 11

4.1 Storm water overflow identification and inspection report 11

4.2 Report on progress made and proposals being developed to meet the improvement programme requirements. 12

Section 5. Licence Specific Reports 14

Section 6. Certification and Sign Off 16

Section 7. Appendices 17

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Section 1. Executive Summary and Introduction to the 2016 AER 1.1 Summary Report on 2016 This Annual Environmental Report has been prepared for D0038-01, Shanganagh, in County Dublin_(DLR), in accordance with the requirements of the wastewater discharge licence for the agglomeration. There are no specified assessments included as an appendix to this AER. The agglomeration is served by a wastewater treatment plant with a Plant Capacity PE of 186,000. The treatment process includes the following:-

Preliminary Treatment

Primary Treatment

Secondary Treatment (Traditional Activated Sludge) The final effluent from the Primary Discharge Point was compliant with the Emission Limit Values in 2016. 3,533,820kgs tonnes total dry solids of dewatered sludge cake and 288,820kgs total dry solids of thermally dried sludge was removed from the wastewater treatment plant in 2016. Sludge was transferred to Biocor Environmental Ltd Carrollstown Estate, Carrollstown, Trim County Meath. There were no major capital or operational changes undertaken in 2016. An Annual Statement of Measures is included in Appendix 7.1.

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Section 2. Monitoring Reports Summary 2.1 Summary report on monthly influent monitoring Table 2.1 Influent Monitoring Summary

BOD (mg / l)

COD (mg / l)

SS (mg / l)

TP (mg / l)

TN (mg / l)

Hydraulic Loading (m3/d)

Organic Loading (PE/Day)

Number of Samples 35 35 35 35 35

Annual Max. 699 1129 983 15.8 81.5 160,580 260,494

Annual Mean 217.30 492.01 345.62 8.97 35.71 30,789.24 96,389.39

Significance of results The annual mean hydraulic loading is less than the peak Treatment Plant Capacity as detailed further in Section 3.2 The annual maximum hydraulic loading is greater than the peak Treatment Plant Capacity as detailed further in Section 3.2. The design of the wastewater treatment plant allows for peak values and therefore the peak loads have not impacted on compliant with Emission Limit Values The annual mean organic loading is less than the Treatment Plant Capacity as detailed further in Section 3.2. The annual maximum organic loading is greater than the Treatment Plant Capacity as detailed further in Section 3.2.

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2.2 Discharges from the agglomeration Table 2.2 - Effluent Monitoring

BOD (mg/l)

COD (mg/l)

TSS (mg/l)

WWDL ELV (Schedule A) where applicable

25.00 125.00 35.00

ELV with Condition 2 Interpretation included

50.00 250.00 52.50

Interim % Reduction (Schedule A)

n/a n/a n/a

Number of sample results 279 399 399

Number of sample results above WWDL ELV

0 0 0

Number of sample results above ELV with Condition 2 Interpretation

0 0 0

Annual Mean (for parameters where a mean ELV applies)

7.60 45.02 13.17

Overall Compliance (Pass/Fail)

Pass Pass Pass

Significance of results The WWTP was compliant with the ELV's set in the wastewater discharge licence. The impact on receiving waters is assessed further in Section 2.3.

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2.3.1. Ambient Monitoring Summary Table 2.3. Ambient Monitoring Report Summary Table

Ambient Monitoring Point from WWDL (or as agreed with EPA)

Irish Grid Reference

EPA Feature Coding Tool code

Bathing Water

Drinking Water

FWPM Shellfish Current WFD Status

ASW-1 334200, 223264

Outside the ERBD zone

n/a n/a n/a n/a Good

ASW-2 330000, 223400

Outside the ERBD zone

Y N N N Good

The results for the upstream and downstream monitoring data sets from Dublin City Council Central Lab are included in Appendix 7.2. Significance of results

The WWTP was compliant with the ELVs set in the wastewater discharge licence as detailed in Section 2.2.

The discharge from the wastewater treatment plant does not have an observable negative impact on the water quality.

The discharge from the wastewater treatment plant does not have an observable negative impact on the Water Framework Directive status.

In terms of the Bathing waters (i.e. Killiney Beach), it is not considered that the discharges from Shanganagh are impacting on these waters. The current 2016 bathing water status of these water is “Good” (Source: EPA Splash)

2.4 Data collection and reporting requirements under the UWWTD The electronic submission of data was completed on 13/12/2016.

2.5 Pollutant Release and Transfer Register (PRTR) - report for previous year A PRTR is included in Appendix 7.3.

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Section 3. Operational Reports Summary 3.1 Treatment Efficiency Report

cBOD (kg/yr)

COD (kg/yr)

SS (kg/yr) Total P (kg/yr)

Total N (kg/yr)

Influent mass loading (kg/year) 2,110,928 4,906,850 3,381,875 89,871 361,995

Effluent mass emission (kg/year)

78,191 469,250 162,283 26,200 309,513

% Efficiency (% reduction of influent load)

96% 90% 95% 71% 14%

3.2 Treatment Capacity Report Table 3.2 - Treatment Capacity Report Summary

Hydraulic Capacity – Design / As Constructed (dry weather flow) (m3/day) 36,000

Hydraulic Capacity – Design / As Constructed (peak flow) (m3/day) 108,000

Hydraulic Capacity – Current loading (m3/day) 30,789

Hydraulic Capacity – Remaining (m3/day) 77,211

Organic Capacity - Design / As Constructed (PE) 186,000

Organic Capacity - Current loading (PE) 96,389

Organic Capacity – Remaining (PE) 89,611

Will the capacity be exceeded in the next three years? (Yes / No) No

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3.3 Extent of Agglomeration Summary Report In this section Irish Water is required to report on the amount of urban waste water generated within the agglomeration. It does not include any waste water collected and created in a private system and discharged to water under a Section 4 Licence issued under the Water Pollution Acts 1977 (as amended).

Table 3.3 - Extent of Agglomeration Summary Report % of P.E. load

generated in the agglomeration

Estimated / Measured

Load generated in the agglomeration that is collected in the sewer network

100

Load collected in the agglomerations that enters treatment plant

Unknown

Load collected in the sewer network but discharges without treatment (includes SWO, EO, and any discharges that are not treated)

Unknown

Load generated in the agglomeration that is collected in the sewer network is the total load generated and collected in the municipal network within the boundary of the agglomeration. Load collected in the agglomerations that enters treatment plant is that portion of the previous figure which enters the waste water treatment plant. Load collected but discharged without treatment is that portion of the first figure which is discharged without treatment.

3.4 Complaints Summary A summary of complaints of an environmental nature is included below. Table 3.4 - Complaints Summary Table

Number of Complaints

Nature of Complaint Number Open Complaints

Number Closed Complaints

2 Blockage in the foul sewer causing an overflow to the surface water network.

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3.5 Reported Incidents Summary A summary of reported incidents is included below. Table 3.5.1 - Summary of Incidents

Incident Type (e.g. Non-compliance, Emission, spillage, pollution incident)

Incident Description

Cause No. of Incidents

Recurring Incident (Yes/No)

Corrective Action Authorities Contacted. Note 1

Reported to EPA (Yes/No)

Closed (Yes/No)

Spillage Overflow to the Short Sea outfall at Shanganagh Waster Treatment Works

Very Heavy Rain 1 Yes None None Yes Yes

Spillage Overflow to the Surface Water System

Blockage in the foul network

2 No Blockages were removed Irish Fisheries Yes Yes

Note 1: For shellfish waters notify the Marine Institute (MI) Sea Fisheries Protection Authority (SFPA) Food Safety Authority (FSAI) and An Bord Iascaigh Mhara (BIM). This should also include any other authorities that should be contacted arising from the findings of any Licence Specific Reports also e.g. Drinking Water Abstraction Impact Risk Assessment, Fresh Water Pearl Mussel Impact Assessments etc.

Table 3.5.2 - Summary of Overall Incidents

Number of Incidents in 2016 3

Number of Incidents reported to the EPA via EDEN in 2016 3

Explanation of any discrepancies between the two numbers above N/A

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3.6 Sludge / Other inputs to the WWTP Other inputs to the waste water treatment plant are summarised in Table 3.6 below. Table 3.6 - Other Inputs

Input Type m3/year P.E. % of load to WWTP

Included in Influent Monitoring? (Y/N)

Is there a leachate/sludge acceptance procedure for the WWTP? (Y/N)

Is there a dedicated leachate/sludge acceptance facility for the WWTP? (Y/N)

Domestic /Septic Tank Sludge

0 0 0 N N N

Industrial / Commercial Sludge

0 0 0 N N N

Landfill Leachate (delivered by tanker)

0 0 0 N N N

Landfill Leachate (delivered by sewer network)

Approx. 2,265

Approx. 35 <1% N N N

Other (specify) 0 0 0 N N N

PE = Volume m3 per yr /(0.175 *365)

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Section 4. Infrastructure Assessments and Programme of Improvements

4.1 Storm water overflow identification and inspection report A comprehensive stormwater overflow identification report was submitted with AER for 2010. A storm water overflow assessment is not appended to this 2016 AER. The Drainage Area Plan (DAP) for the Shanganagh-Bray agglomeration is due to be completed by 2019. The DAP is an investigation covering hydraulic, environmental, structural, service and operational failure mechanisms within a drainage area. The purpose of the DAP is to use an integrated, risk based approach to assess network performance and to identify and prioritise any interventions needed to ensure compliance with environmental and service objectives.

The DAP will encompass both Storm Water Overflow and network assessments and will therefore comprehensively address the need to carry out separate Storm Water Overflow or Sewer Integrity Assessments at this time.

Table 4.1.1 - SWO Identification and Inspection Summary Report

WWDL Name / Code for Storm Water Overflow

Irish Grid Ref.

Included in Schedule A4 of the WWDL

Significance of the overflow (High/Med/Low)

Compliance with DoEHLG criteria

No. of times activated in 2016 (No. of events)

Total volume discharged in 2016 (m3)

Total volume discharged in 2016 (P.E.)

Estimated / Measured data

Not required in 2016 AER

Table 4.1.2 - SWO Identification and Inspection Summary Report

How much sewage was discharged via SWOs in the agglomeration in the year (m3/yr)? N/A

How much sewage was discharged via SWOs in the agglomeration in the year (p.e.)? N/A

What % of the total volume of sewage generated in the agglomeration was discharged via SWOs in the agglomeration in 2013?

N/A

Is each SWO identified as non-compliant with DoEHLG Guidance included in the Programme of Improvements?

N/A

The SWO assessment includes the requirements of relevant WWDL Schedules (Yes/No) N/A

Have the EPA been advised of any additional SWOs / changes to Schedules A/C under Condition 1? N/A

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4.2 Report on progress made and proposals being developed to meet the improvement programme requirements. An Improvement Programme Report is not included in this 2016 AER. Table 4.2.1 addresses the Specified Improvement Programmes as detailed in Schedules A3 and C of the WWDL. It also details other improvements identified through assessments required under the licence. Table 4.2.1 - Specified Improvement Programme Summary

Specified Improvement Programmes

Licence Schedule

Licence Completion Date

Date Expired

Status of Works

% Construction Work Completed

Licensee Timeframe for Completing the Work

Comments

Upgrading of sewer network to SWO’s comply with DoEHLG guidance

C3 None NA Not Started 0% The Bray Shanganagh Drainage Area Plan will commence in 2017. SWO’s will be part of this study.

Waste Water treatment Plant Upgrade

C1 30th April 2011

Y Completed 100% N/A Works commissioned 1st May 2012

A summary of the status of any improvements identified by under Condition 5.2 is included below. Table 4.2.2 - Improvement Programme Summary

Improvement Identifier / Name

Improvement Description

Improvement Source

Progress (% complete)

Expected Completion Date

Comments

Condition 5.2 Secondary Plant Commissioned

WWTP assessment 5.2

100% N/A Completed

Condition 5.2 Sewer Integrity Tool Used

Sewer Integrity Tool (Condition 5.2).

100% N/A Completed

Condition 4 & 5.2

Bray Shanganagh Drainage Study On Capital Investment Programme

SWO assessment (Condition 4 & 5.2).

0% A survey and assessment of SWOs was carried out in 2010. This work will be overtaken by the Bray/Shanganagh Drainage Study.

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Table 4.2.3 - Sewer Integrity Risk Assessment Tool Summary

The Improvement Programme should include an assessment of the integrity of the existing wastewater works for the following:

Risk Assessment Rating (High, Medium, Low)

Risk Assessment Score

Reference to relevant section of AER (e.g. Appendix 2 Section 4.

Specified improvements

Comment

Hydraulic Risk Assessment Score Medium 53

See Appendix C in 2013 AER

Environmental Risk Assessment Score

Low 238

See Appendix C in 2013 AER

Structural Risk Assessment Score Medium 71

See Appendix C in 2013 AER

Operation & Maintenance Risk Assessment Score

Medium 124

See Appendix C in 2013 AER

Overall Risk Score for the agglomeration

Low 486 See Appendix C in 2013 AER

The Drainage Area Plan (DAP) for the Shanganagh-Bray agglomeration is due to be completed by 2019. The DAP is an investigation covering hydraulic, environmental, structural, service and operational failure mechanisms within a drainage area. The purpose of the DAP is to use an integrated, risk based approach to assess network performance and to identify and prioritise any interventions needed to ensure compliance with environmental and service objectives.

The DAP will encompass both Storm Water Overflow and network assessments and will therefore comprehensively address the need to carry out separate Storm Water Overflow or Sewer Integrity Assessments at this time.

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Section 5. Licence Specific Reports Licence Specific Reports Summary Table

Licence Specific Report Never required by condition 5 in Licence

Required in this AER or outstanding from previous AER

Included in this AER / Remains outstanding

Reference to previous AER containing report or relevant section of this AER

Priority Substances Assessment Not required N/A

Drinking Water Abstraction Point Risk Assessment

Not required N/A

Shellfish Impact Assessment Not required N/A

Pearl Mussel Report Not required N/A

Toxicity/Leachate Management Not required N/A

Toxicity of Final Effluent Report Required No

No See Section 5.5.

Small Stream Risk Score Assessment

Not required N/A

Habitats Impact Assessment Not required N/A

Licence Specific Reports Summary of Findings

Licence Specific Report Recommendations in Report

Summary of Recommendations in Report

Priority Substances Assessment N/A

Drinking Water Abstraction Point Risk Assessment

N/A

Shellfish Impact Assessment N/A

Pearl Mussel Report N/A

Toxicity/Leachate Management N/A

Toxicity of Final Effluent Report No

Small Stream Risk Score Assessment N/A

Habitats Impact Assessment N/A

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5.5 Toxicity of the Final Effluent Report

In the original application for the discharge licence, an estimate of the PE entering the plant from leachate from Ballyogan and Fasseroe landfills of 8,000 PE was made. Wicklow County Council has advised that there is no leachate entering Bray Pump Station from Fasseroe Landfill. RPS Consulting Engineers monitor leachate levels entering the Carrickmines sewer (which leads to the Shanganagh Plant) on a quarterly basis. Analysis of the results of this monitoring has shown that in fact the PE from leachate was grossly overestimated at the time of the application. In fact, the PE figure is very low, less than 10. Consequently, with this low level of leachate entering the plant, there is no need for toxicity testing.

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Section 6. Certification and Sign Off Table 6.1 - Summary of AER Contents

Does the AER include an executive summary? Yes

Does the AER include an assessment of the performance of the Waste Water Works (i.e. have the results of assessments been interpreted against WWDL requirements and or Environmental Quality Standards)?

Yes

Is there a need to advise the EPA for consideration of a technical amendment / review of the licence?

Yes

List reason e.g. additional SWO identified Condition 1.8 of both licences (D0038-01 and D0005-01) state that the licensee should “seek a licence review at least six months in advance of the completion of the Bray Transfer pipeline to the upgraded Shanganagh Waste Water Treatment Plant”

Is there a need to request/advise the EPA of any modifications to the existing WWDL? Refer to Condition 1.7 (changes to works/discharges) & Condition 4 (changes to monitoring location, frequency etc.)

No

List reason e.g. failure to complete specified works within dates specified in the licence, changes to monitoring requirements.

N/A

Have these processes commenced? (i.e. Request for Technical Amendment / Licence Review / Change Request)

It is proposed to submit a review application to the EPA in 2017.

Are all outstanding reports and assessments from previous AERs included as an appendix to this AER?

N/A

Declaration by Irish Water The AER contains the following:

Introduction and background to 2016 AER.

Monitoring Reports Summary.

Operational Reports Summary.

Infrastructural Assessment and Programme of Improvements.

Licence specific reports

Certification and Sign Off

Appendices I certify that the information given in this Annual Environmental Report is truthful, accurate and complete: Signed: Date: 28/02/2017 Elizabeth Arnett Head of Corporate Affairs and Environmental Regulation

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Section 7. Appendices Appendix 7.1 - Annual Statement of Measures Appendix 7.2 - Ambient Monitoring Summary Appendix 7.3 - Pollutant Release and Transfer Register (PRTR) Summary Sheets

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Appendix 7.1 Statement of Measures

No additional measures have been taken in 2016 in relation to prevention of environmental damage. The need

for measures to prevent environmental damage are reviewed on an annual basis.

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Appendix 7.2 - Ambient Monitoring Summary

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Appendix 7.3 - Pollutant Release and Transfer Register (PRTR) Summary Sheets

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