Annual Environmental Report 2017

Agglomeration Name: Shanganagh

Licence Register No. D0038-01

2

Contents

Section 1. Executive Summary and Introduction to the 2017 AER 3

1.1 Summary Report on 2017 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 Ambient Monitoring Summary 6

2.4 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. 13

Section 5. Licence Specific Reports 15

5.1 Toxicity of the Final Effluent Report 16

Section 6. Certification and Sign Off 17

Section 7. Appendices 18

Appendix 7.1 Statement of Measures/Improvement Programme 19

Appendix 7.2 Ambient Monitoring 20

Appendix 7.3 Pollutant Release and Transfer Register (PRTR) Summary Sheets 22

3

Section 1. Executive Summary and Introduction to the 2017 AER 1.1 Summary Report on 2017 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 appended to this 2017 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 (Screening Degritting Grease Removal)

Primary Treatment (Settlement)

Secondary Treatment (Traditional Activated Sludge) The final effluent from the Primary Discharge Point was compliant with the Emission Limit Values in 2017. 2,852,000kg of sludge as dewatered cake and 492,000kg of dried sludge was removed from the wastewater treatment plant in 2017. Sludge was transferred to Biocor Ltd., Carrollstown Estate, Trim, County Meath. The following improvement works were undertaken in 2017:-

Bray Shanganagh Drainage Area Study began in Q4 2017. An Annual Statement of Measures is included in Appendix 7.1.

4

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

Monthly Influent Monitoring BOD (mg/l)

COD (mg/l)

SS (mg/l)

TP (mg/l)

TN (mg/l)

Hydraulic Loading (m3/d)

Number of Samples 34 34 34 34 34

Annual Max. 294 1010 452 13.3 66.5 77,894

Annual Mean 208.20 526.17 291.28 8.78 43.99 25,453.92

Other inputs in the form of sludge/leachate are added to the WWTP after the influent monitoring point and are therefore not represented by influent monitoring. Other inputs, where relevant, are detailed in Section 3.6. 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 less than the peak Treatment Plant Capacity as detailed further in Section 3.2. 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. The design of the wastewater treatment plant allows for peak values and therefore the peak loads have not impacted on compliance with Emission Limit Values.

5

2.2 Discharges from the agglomeration Table 2.2 - Effluent Monitoring

Effluent Monitoring Summary

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 87.50

Number of sample results 29 34 34

Number of sample results above WWDL ELV

0 0 0

Number of sample results above ELV with Condition 2 Interpretation

0 0 0

Overall Compliance (Pass/Fail)

Pass Pass Pass

Significance of results The WWTP was compliant with the ELV's set in the wastewater discharge licence. Other potential impacts on receiving water are further discussed in Section 2.3.

6

2.3 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

Yes No No No Unassigned

ASW-2 330000, 223400

Outside the ERBD Zone

Yes No No No Unassigned

The results for coastal monitoring from DCC Laboratory are included in the Appendix 7.2.

The WWTP was compliant with the ELV’s 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 water quality.

The discharge from the waste water treatment plant does not have an observable negative impact on the Water Framework Directive Status.

In terms of bathing water (i.e. Killiney Beach), it is considered that the discharges from Shanaganagh WWTP are not impacting on these waters. The current 2017 bathing water status of these waters is “Good” (Source: Beaches.ie)

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

7

Section 3. Operational Reports Summary 3.1 Treatment Efficiency Report Table 3.1 – Treatment Efficiency Report Summary

cBOD (kg/yr)

COD (kg/yr)

SS (kg/yr)

Total P (kg/yr)

Total N (kg/yr)

Influent mass loading (kg/year) 1,895,220 4,745,484 2,673,925 87,072 417,575

Effluent mass emission (kg/year)

86,904 462,782 130,109 32,730 425,817

% Efficiency (% reduction of influent load)

95% 90% 95% 62% -2%*

* There were 29 samples of effluent analysed for Total Nitrogen. Average effluent Total Nitrogen was 40.9mg/l. There 34

samples of influent analysed for Total Nitrogen. Average influent total nitrogen was 45.19mg/l. In average mg/l terms there was a 9.5% reduction of Total Nitrogen. The -2% is a statistical anomaly as calculations are carried out on flows and samples for only 10% of the year.

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) 25,454

Hydraulic Capacity – Remaining (m3/day) 82,546

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

Organic Capacity - Collected Load (PE) 129,011

Organic Capacity – Remaining (PE) 56,989

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

8

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% Estimated

Load collected in the agglomerations that enters treatment plant

99.995 Estimated

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

0.005% Estimated

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

48 Flooding from the sewer network 4 44

9

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)

Uncontrolled Release INCI012420

Overflow at Killiney PS to Killiney Bay

EO caused by pump failure

1 No Seals replaced, and pumps reset

EPA, MI, SFPA, BIM,Dept of Ag., FSAI

Yes Yes

Uncontrolled Release INCI012710

Overflow at Killiney PS to Killiney Bay during heavy rainfall

Plant or equipment breakdown at WWTP

1 No Malfunctioning probe tested and repaired

EPA, MI, SFPA, BIM,Dept of Ag., FSAI

Yes Yes

Uncontrolled Release INCI012722

Overflow at Killiney PS to Killiney Bay during heavy rainfall

Plant or equipment breakdown at WWTP

1 No Malfunctioning probe tested and repaired

EPA, MI, SFPA, BIM,Dept of Ag., FSAI

Yes Yes

Uncontrolled Release INCI13167

Overflow at Corke Abbey Pumping Station

EO caused by ragging or blocking

1 No Pumps reset EPA, MI, SFPA, BIM,Dept of Ag., FSAI

Yes No

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 2017 4

Number of Incidents reported to the EPA via EDEN in 2017 4

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

10

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 Quantity 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 m3 0 0.00% No No No

Waterworks Sludge 0 m3 0 0.00% No No No

Industrial / Commercial Sludge

0 m3 0 0.00% No No No

Landfill Leachate (delivered by tanker)

0 m3 0 0.00% No No No

Landfill Leachate (delivered by sewer network)

6,000 m3 73 0.06% Yes No No

Other (specify) 0 m3 0 0.00% No No No

11

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 the 2010 AER. A storm water overflow assessment is not appended to this 2017 AER. The Drainage Area Plan (DAP) for the Shanganagh-Bray agglomeration commenced in Q4 2017 and 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 2017 (No. of events)

Total volume discharged in 2017 (m3)

Total volume discharged in 2017 (P.E.)

Estimated / Measured data

SW012 * 322644, 226838

Yes Low Non-Compliant

0 0 0.0 Estimated

SW009 322645, 225545

Yes Low Non-Compliant

0 0 0.0 Estimated

SW010 323607, 225496

Yes Medium Compliant 1 50 0.8 Estimated

SW011 325251, 223481

Yes Medium Non-Compliant

3 300 4.7 Estimated

SW002 321228, 225548

Yes Low Non-Compliant

1 25 0.4 Estimated

SW003 321239, 225569

Yes Low Non-Compliant

1 25 0.4 Estimated

SW004 321378, 225602

Yes Low Non-Compliant

1 25 0.4 Estimated

12

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 2017 (No. of events)

Total volume discharged in 2017 (m3)

Total volume discharged in 2017 (P.E.)

Estimated / Measured data

SW005 321413, 225610

Yes Low Non-Compliant

1 25 0.4 Estimated

SW006 321602, 225682

Yes Low Non-Compliant

1 25 0.4 Estimated

SW007 322047, 225536

Yes Low Non-Compliant

0 0 0.0 Estimated

SW008 322141, 225513

Yes Low Non-Compliant

0 0 0.0 Estimated

* Wrong co-ordinates in licence. Correct co-ordinates are tabled above.

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)?

475

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

7.44

What % of the total volume of sewage generated in the agglomeration was discharged via SWOs in the agglomeration in 2017?

0.005%

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

Yes. The Bray Shanganagh Drainage Area Plan will commence in Q4 2017.

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

Upgrades to the network will be informed by the above study and will include compliance with DoEHLG guidelines.

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

N/A

13

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 2017 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

Expected Completion Date

Comments

Upgrading of sewer network to ensure SWO’s comply with DoEHLG criteria

C Refer to condition 4.12 & 5

Not started Unknown The Bray Shanganagh Drainage Area Plan commenced in Q4 2017. SWO are part of this study.

WW sewer network improvements

C Refer to condition 5

Not Started Unknown The Bray Shanganagh Drainage Area Plan commenced in Q4 2017.

WWTP upgrade and ancillary works

C 30-04-11 Yes Completed 100%

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

100% N/A Completed

Condition 5.2 Sewer Integrity Tool Used

100% N/A Completed

Condition 4 & 5.2

Bray Shanganagh Drainage Study (On CIP)

0% Work began on the Bray Shanganagh Drainage Study in Q4 2017.

14

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

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 commenced in Q4 2017 and 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.

15

Section 5. Licence Specific Reports 5a. Licence Specific Reports Summary Table

Licence Specific Report Required by Condition 5 in Licence

Required in this AER or outstanding from previous AER?

Included in this AER?

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

Priority Substances Assessment Not Required N/A N/A N/A

Drinking Water Abstraction Point Risk Assessment

Not Required N/A N/A N/A

Shellfish Impact Assessment Not Required N/A N/A N/A

Pearl Mussel Report Not Required N/A N/A N/A

Toxicity/Leachate Management Not Required N/A N/A N/A

Toxicity of Final Effluent Report Required No No Section 5.1

Small Stream Risk Score Assessment

Not Required N/A N/A N/A

Habitats Impact Assessment Not Required N/A N/A N/A

5b. Licence Specific Reports Summary of Findings

Licence Specific Report Recommendations in Report

Summary of Recommendations in Report

Priority Substances Assessment N/A N/A

Drinking Water Abstraction Point Risk Assessment

N/A N/A

Shellfish Impact Assessment N/A N/A

Pearl Mussel Report N/A N/A

Toxicity/Leachate Management No N/A

Toxicity of Final Effluent Report N/A N/A

Habitats Impact Assessment N/A N/A

16

5.1 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.

17

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)

Yes. TA submitted to EPA on 28/09/2017

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

Yes

Ensure the following reports are included N/A

Declaration by Irish Water The AER contains the following:

Introduction and background to 2017 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: 15/02/2018 Michael O'Leary Acting Head of Environmental Regulation

18

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

19

Appendix 7.1 Statement of Measures / Improvement Programme Bray Shanganagh Drainage Area Study began in Q4 2017.

20

Appendix 7.2 Ambient Monitoring

Sampling Point Date

Ammonia BOD Saline

Bottom Oxygen

Bottom Temp

Colour (Visual)

DIN E. coli Enterococci Faecal Coliforms

Oxygen at 0 m depth

pH Pheophytin A

Salinity (mean)

Surface Temp

TON Total Coliforms

Total Nitrogen Saline

µg/l as N mg/l % Sat. °C µg/l MPN/100ml CFU/100ml MPN/100ml % Sat. pH mg/m3 PSU °C µg/l as N MPN/100ml µg/l as N

(40616) ASW-1 (Shanganagh STW Receiving Water) 5km due east off SW1 Harbour. Composite Sample. 19-07-17 33 1 110 14.9 Normal 33 <10 <1 <10 110.1 8.2 1.2 33.92 15.1 <40 <10 61

(40621) ASW-2 (Shanganagh STW Receiving Water) 2.5km NE from Dalkey Island. Composite Sample. 19-07-17 57 1 109.2 15.4 Normal 57 <10 <1 <10 109.1 8.2 0.4 33.89 15.4 <40 <10 85

21

Killiney Beach Bathing Water Monitoring Results 2017:

Date E-Coli

(cfu/100ml)

Intestinal Enterococci (cfu/100ml)

EPA Classification

Standard

11-09-17 20 5 Excellent

04-09-17 52 5 Excellent

28-08-17 <10 1 Excellent

22-08-17 10 14 Excellent

21-08-17 20 20 Excellent

14-08-17 52 15 Excellent

08-08-17 <10 59 Excellent

01-08-17 <10 1 Excellent

31-07-17 10 1 Excellent

24-07-17 <10 4 Excellent

17-07-17 10 <1 Excellent

10-07-17 <10 15 Excellent

03-07-17 <10 4 Excellent

27-06-17 327 260 Poor

26-06-17 <10 1 Excellent

20-06-17 <10 1 Excellent

19-06-17 <10 <1 Excellent

13-06-17 <10 6 Excellent

06-06-17 <10 4 Excellent

29-05-17 10 148 Good

Source: Beaches.ie

Comment on the Bathing Water Monitoring results: Killiney is classified as achieving Good Water Quality in 2017 based on the assessment of bacteriological results for the period 2014 to 2017. Killiney also had a Good Water Quality rating in 2016 and achieved an Excellent Water Quality rating in 2015 and 2014.

EPA Bathing Water Classification for Individual Sample Results

Intestinal Enterococci (cfu/100ml)

E. coli (cfu/100ml)

Excellent Quality </=100 </=250

Good Quality 101 - 200 251 - 500

Sufficient Quality 201 -250 501 - 1000

Poor Quality >250 >1000

22

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

23

24

25

26

27

28

29