annual environmental report 2015 - … environmental report 2015 agglomeration name: kingscourt...

Annual Environmental Report 2015

Agglomeration Name: Kingscourt

Licence Register No. D0083-01

i | Irish Water

Table of Contents

Section 1. Executive Summary and Introduction to the 2015 AER 1 1.1 Summary report on 2015 1

Section 2. Monitoring Reports Summary 2 2.1 Summary report on monthly influent monitoring 2 2.2 Discharges from the agglomeration 3

2.3 Ambient monitoring summary 4 2.4 Data collection and reporting requirements under the Urban Waste Water Treatment

Directive 4 2.5 Pollutant Release and Transfer Register (PRTR) - report for previous year 4

Section 3 Operational Reports Summary 5 3.1 Treatment Efficiency Report 5 3.2 Treatment Capacity Report 5

3.3 Extent of Agglomeration Summary Report 6 3.4 Complaints Summary 6 3.5 Reported Incidents Summary 7 3.6 Sludge / Other inputs to the WWTP 7

Section 4. Infrastructural Assessments and Programme of Improvements 8 4.1 Storm water overflow identification and inspection report 8

4.2 Report on progress made and proposals being developed to meet the improvement

programme requirements. 8

Section 5. Licence Specific Reports 12 5.1 Priority Substances Assessment 13 5.2 Drinking Water Abstraction Point Risk Assessment. 14

5.3 Shellfish Impact Assessment Report. 15 5.4 Toxicity / Leachate Management 16

5.5 Toxicity of the Final Effluent Report 16 5.6 Pearl Mussel Measures Report 17 5.7 Habitats Impact Assessment Report 18

Section 6. Certification and Sign Off 19

Section 7. Appendices 20

1 | Irish Water

Section 1. Executive Summary and Introduction to the 2015 AER

1.1 Summary report on 2015

This Annual Environmental Report has been prepared for D0083-01, Kingscourt, in County Cavan in accordance with the requirements of the wastewater discharge licence for the agglomeration. The WWDL for this agglomeration was issued on 25/02/2014 and this AER deals with the period 01/01/2015 to 31/12/2015. Specified reports are included as an appendix to the AER as follows:

Sewer integrity assessment

Storm water overflow assessment

Priority substances assessment The following report is currently being completed and will be submitted later in 2016:

Small Stream Risk Score Report The agglomeration is served by a wastewater treatment plant with a Design PE of 2,335. The treatment process includes the following:-

Preliminary treatment (including screening / grit removal)

Primary treatment

Secondary treatment (Two Plastic Media Percolation Filters, 1 Rotating Biological Disc (RBC) Unit)

Tertiary Treatment (Reed Beds)

Chemical dosing for phosphorus removal The final effluent from the Primary Discharge Point was compliant with the Emission Limit Values in 2015. 4,796,000 kgs of sludge, (total weight sludge, (wet)), were removed from the wastewater treatment plant as dewatered sludge cake. Sludge was dewatered on site by mobile dewatering unit. Sludge was transferred to the Enva Storage Facility at Carrollstown Estate in County Meath where it was lime treated to Class A Biosolids Standard before spreading direct to land in County Meath. Landspreading was undertaken in accordance with Nutrient Management Plans for relevant lands and in compliance with Meath County Council Protocol for use of biosolids in agriculture and all other relevant statutory regulations and best practice guidelines. There were no major capital or operational changes undertaken in 2015. An Annual Statement of Measures is included in Appendix 7.1.

2 | Irish Water

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

12 12 12 N/A N/A

Annual Max. 295 329 140 N/A N/A 4,491 3,378

Annual Mean 135.6 211.8 59.2 N/A N/A 846 1,516

Condition 4.16 of the WWDA requires influent stream monitoring for cBOD, COD and Suspended Solids. Significance of results The annual mean hydraulic loading is less than the 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 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 compliant with Emission Limit Values.

3 | Irish Water

2.2 Discharges from the agglomeration

Table 2.2 - Effluent Monitoring Summary

cBOD (mg/l)

COD (mg/l)

TSS (mg/l)

pH Comment

WWDL ELV (Schedule A)

25 125 35 6.0 – 9.0

ELV with Condition 2 Interpretation included

50 250 87.5 6.0 – 9.0

Number of sample results

12 12 12 12

Number of sample results above WWDL ELV

0 0 0 0

Number of sample results above ELV with Condition 2 Interpretation included

0 0 0 0

Annual Mean (for parameters where a mean ELV applies)

N/A N/A N/A N/A

Overall Compliance (Pass/Fail)

Pass 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 Ambient monitoring summary

Table 2.3 - Ambient Monitoring Report Summary

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

Irish Grid Reference

EPA Feature Coding Tool code

Receiving Waters Designation (Y/N) WFD Status Does assessment of the ambient monitoring results indicate that the discharge is impacting on water quality?

Bathing Water

Drinking Water

FWPM Shellfish

Upstream monitoring point

279752 295581

RS06M230700 n/a n/a n/a n/a Moderate n/a

Downstream monitoring point

279711 296264

RS06M230710 N N N N Moderate Possible impact. Slight elevation in Ammonia and Ortho-P levels downstream. Based on limited data. Further investigation/study required

The results for the upstream and downstream monitoring used are included as in Appendix 7.2. Significance of results 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 appears to be having an observable negative impact on the water quality.

The discharge from the wastewater treatment plant doesn’t have an observable negative impact on the Water Framework Directive status.

However it must be noted that this ecological status is extrapolated from a donor water body.

2.4 Data collection and reporting requirements under the Urban Waste Water Treatment Directive

The electronic submission of data was completed on: 5th January 2016.

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

The PRTR is not required to be submitted for 2015.

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Section 3 Operational Reports Summary

3.1 Treatment Efficiency Report

A summary presentation of the efficiency of the treatment process including information for all the parameters specified in the licence is included below:- Table 3.1 - Treatment Efficiency Report Summary

cBOD (kg/yr)

COD (kg/yr)

SS (kg/yr)

Comment

Influent mass loading (kg/year)

33,202 51,876 14,501 Condition 4.16 of the WWDA

Effluent mass emission (kg/year)

1,220 6,986 2,632

% Efficiency (% reduction of influent load)

96% 87% 82%

3.2 Treatment Capacity Report Table 3.2 - Treatment Capacity Report Summary

Hydraulic Capacity – Design / As Constructed (dry weather flow) (m3/year) 153,300

Hydraulic Capacity – Design / As Constructed (peak flow) (m3/year) 459,900

Hydraulic Capacity – Current loading (m3/year) 308,950

Hydraulic Capacity – Remaining (m3/year) 150,950

Organic Capacity - Design / As Constructed (PE) 2,335

Organic Capacity - Current loading (PE) 1,516

Organic Capacity – Remaining (PE) 819

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

Organically :No Hydraulically: Yes However, further investigation required to verify.

The annual maximum organic loading figure is greater than the Treatment Plant Capacity. The total weight of sludge removed from Kingscourt in 2015 was 67,140kgs Dry Solids. Using the mean organic loading figure of 1,516 gives a sludge yield of almost 121g/p.e. which is higher than what would be expected at a standard wastewater treatment plant (55-60g/p.e.). Similarly using the maximum organic loading figure of 3,378 gives a sludge yield of almost 55g/p.e. which is exactly what would be expected at a standard wastewater treatment plant (55-60g/p.e.). This may indicate that further analysis of sampling results and sludge disposal in 2016 may be required to more accurately confirm the influent load to the WWTP. In addition the issue of hydraulic loading requires further investigation.

6 | Irish Water

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 treated 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

Load generated in the agglomeration that is collected in the sewer network 100%

Load collected in the agglomeration that enters treatment plant unknown

Load collected in the sewer network but discharged without treatment

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.

The data in Table 3.3 above is based on influent monitoring as detailed in Section 2.1 above.

3.4 Complaints Summary

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

Number Date & Time

Nature of Complaint

Cause of Complaint

Actions taken to resolve issue

Closed (Y/N)

22632383 22/01/2015 13:51

Sewage Blockage. Blockage in Sewer Network.

Investigated. Blockage Cleared and Sewer Lines Jetted. 29/01/2015

Y

23295795 & 23299057

27/05/2015 11:18


Investigated. Blockage Cleared and Sewer Lines Jetted. 16/07/2015

Y

22506602 & 22508902

05/01/2015 10:55

Foul Odour from Sewer Network.

Blockage in Sewer Network.

Investigated. Issue Resolved. 12/01/2015

Y

23309858 04/06/2015 10:39


Investigated. Section of sewer Collapsed. Sewer Replaced. 06/07/2015

Y

7 | Irish Water

3.5 Reported Incidents Summary

There were no reported incidents in 2015. Table 3.5.1 - Summary of Incidents

Incident Type (e.g. Non-compliance, Emission, spillage, Emergency Overflow Activation)

Incident Description

Cause No. of incidents

Corrective Action

Authorities Contacted Note 1

Reported to EPA (Yes/No)

Closed (Y/N)

N/A N/A N/A N/A N/A N/A N/A N/A

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 2014 0 No. of 0

Number of Incidents reported to the EPA via EDEN in 2014 0 No. of 0

Explanation of any discrepancies between the two numbers above No Discrepancies

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 PE/year % of load to WWTP

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/A N/A

Industrial / Commercial Sludge

0 0 0 N/A N/A

Landfill Leachate (delivered by tanker)

0 0 0 N/A N/A

Landfill Leachate (delivered by sewer network)

0 0 0 N/A N/A

Other (specify)

0 0 0 N/A N/A

Notes: 1. Other Inputs include; septic tank sludge, industrial /commercial sludge, landfill leachate and any other sludge that is collected

and added to the treatment plant. 2. Sludge that is added to a dedicated sludge reception facility at a waste water treatment plant not included in Table 3.6. Only

include sludge which is added to the waste water treatment process stream. Enter zero where there are no inputs

8 | Irish Water

Section 4. Infrastructural Assessments and Programme of Improvements

4.1 Storm water overflow identification and inspection report

A Storm Water Overflow Identification & Inspection report is included with this AER as Appendix 7.4. 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 / Medium / Low)

Compliance with DoEHLG Criteria

No. of times activated in 2015 (No. of events)

Total volume discharged in 2014 (m3)

Total volume discharged in 2014 (P.E.)

Estimated /Measured data

SW002 277329E 295755N

Included in Schedule A3

Medium unknown 134 21708 Unknown(BOD not measured)

M

SW004 Data not available

No Medium unknown unknown Unknown Unknown N/A

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)?

SW002: 21,708 m3 SW004: unknown

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

Unknown

What % of the total volume of sewage generated in the agglomeration was discharged via SWOs in the agglomeration in 2014?

SW002: <7 % SW004: unknown

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

More data gathering required to determine compliance or otherwise

The SWO assessment includes the requirements of Schedule A3 & C3 Yes

Have the EPA been advised of any additional SWOs / changes to Schedule C3 and A4 under Condition 1.7?

No, SW004 identified. EPA to be advised during 2016.

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

The following programme of works have been identified in regard to improving plant operation, both physical works and process improvements.

Detailed Network Study to include for hydraulic loadings including storm flows. (Contract Docs currently being prepared).

Provision of Sludge Holding tank including PFT. (Contract Docs currently being prepared).

Calibrate and verify inlet and outlet flow meters.

Carry out a weekly BOD loading analysis and adjust the process parameters as required

Clean out clarifier and inspect scrapers and repair/replace as necessary

Investigate if increasing the frequency of de-sludging from the Primary Settlement Tank could be carried out to improve the performance of the plant.

http://www.epa.ie/pubs/advice/wastewater/UrbanWasteWater2.pdf

9 | Irish Water

Operate both trickling filters together to allow steady "wetting" instead of current intermittent duty/standby arrangement.

Increase wetting rate on bio-filters when incoming flow is at DWF in order to develop a healthy bio-film.

Repair work to be carried out on distribution arms of bio-filter to enable optimum treatment. The Specified Improvement Programme as detailed in Schedule C2 of the WWDL has been completed.

Table 4.2.1 - Specified Improvement Programme Summary

Specified Improvement Programmes

(under Schedule A

and C of WWDL)

Licence Schedule (A or C)

Licence Completion

Date

Date Expired? (N/NA/Y)

Status of Works ((i) Not Started; (ii) At

planning stage; (iii) Work

ongoing on-site; (iv)

Commissioning Phase; (v)

Completed; (vi) Delayed;)

% Construction

Work Completed

Timeframe for

Completing the Work

Comments

Discontinue Storm water Overflow SW003

C2 31/01/2014 Y Completed 100% N/A Storm water Overflow Discharge SW003 to Reed Beds Discontinued.

A summary of the status of any improvements identified by under Condition 5.2 is included below.

10 | Irish Water

Table 4.2.2 - Improvement Programme Summary

Improvement Identifier

Improvement Description

Improvement Source Progress (% completed)

Expected Completion Date

Comments

N/A WWTP assessment (Condition 5.2).

N/A

N/A Sewer Integrity Tool (Condition 5.2).

N/A N/A Refer to Appendix 7.6

N/A Secondary discharges assessment (Condition 5.2).

N/A N/A

N/A SWO assessment (Condition 4 & 5.2).


N/A Drinking Water Abstraction Risk Assessment (Condition 4)

N/A N/A Not Required

N/A Shellfish Impact Risk Assessment (Condition 5)


N/A Pearl Mussel Impact Assessment (Condition 4)


Ongoing Programme of Process Optimisation

Improved Operational Control

Ongoing Ongoing

Ongoing Programme of Process Optimisation

Incident Reduction Ongoing Ongoing

N/A Elimination/Reduction of Priority Substances


Improvements identified above also include measures taken to prevent environmental damage anticipated following events or accidents/incidents associated with discharges or overflows from the waste water works and as such are considered to fulfil any Statement of Measures requirements. Refer also to Appendix 7.1 which summarises the Annual Statement of Measures. Improvement Programme recommendations are as listed above

11 | Irish Water

A Sewer Integrity Risk Assessment was carried out for this AER (Appendix 7.6 and summary in Table 4.2.3 below). Please note that insufficient information is available for Kingscourt, (D0083-01), in order to adequately assess the Sewer Integrity for this agglomeration. This information shortfall will be addressed in the coming 12 months and the risk assessment will be revised using the updated information. 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

Comment

Hydraulic Risk Assessment Score Low 47 N/A

Environmental Risk Assessment Score Low 140 N/A

Structural Risk Assessment Score High 130 N/A

Operation & Maintenance Risk Assessment Score

Low 40 N/A

Overall Risk Score for the agglomeration Low 357 Network Survey currently being procured

12 | Irish Water

Section 5. Licence Specific Reports

Licence Specific Reports Summary Table

Licence Specific Report Required in AER or outstanding from previous AER

Included in AER Reference to relevant section of AER (e.g. Appendix 2 Section4.

Priority Substances Assessment

Yes Yes Summary of finding in Table 5.1. Full report in Appendix 7.7.

Drinking Water Abstraction Point Risk Assessment

No No

Habitats Impact Assessment No No

Shellfish Impact Assessment No No

Pearl Mussel Report No No

Toxicity/Leachate Management

No No

Toxicity of Final Effluent Report

No No

Small Stream Risk Score Yes No

The Small Stream Risk Score is currently being prepared, and will be submitted to the EPA later in 2016.

Licence Specific Reports Summary of Findings

Licence Specific Report

Recommendations in Report

Summary of Recommendations in Report

Priority Substances Assessment

No

Screening for Organic Compounds and Metals has been carried out. Copies of sample results are included in Appendix 7.7. Levels for priority substances, metals and organic compounds, previously screened, were considered to be below that which would have any significant impact on the receiving waters.

Drinking Water Abstraction Point Risk Assessment

Report Not Required

Habitats Impact Assessment

Report Not Required

Shellfish Impact Assessment

Report Not Required

Pearl Mussel Report Report Not Required

Toxicity/Leachate Management

Report Not Required

13 | Irish Water

Toxicity of Final Effluent Report

Report Not Required

5.1 Priority Substances Assessment

The Priority Substances Assessment report is included in Appendix 7.7. A summary of the findings of this report is included below. Table 5.1 - Priority Substance Assessment Summary

Licensee self- assessment checks to determine whether all relevant information is included in the Assessment.

Does the assessment use the Desk Top Study Method or

Screening Analysis to determine if the discharge contains

the parameters in Appendix 1 of the EPA guidance

Screening Analysis

Does the assessment include a review of Trade inputs to

the works? No

Does the assessment include a review of other inputs to

the works? N/A.

Does the report include an assessment of the significance

of the results where a listed material is present in the

discharge? (e.g. impact on the relevant EQS standard for

the receiving water)

N/A. Levels for priority substances, metals and organic compounds, previously screened, were considered to be below that which would have any significant impact on the receiving waters.

Does the assessment identify that priority substances

may be impacting the receiving water? No

Does the Improvement Programme for the agglomeration

include the elimination / reduction of all priority

substances identified as having an impact on receiving

water quality?

N/A.

14 | Irish Water

5.2 Drinking Water Abstraction Point Risk Assessment.

The Drinking Water Abstraction Point Risk Assessment report is not required for this agglomeration. Table 5.2 - Drinking Water Abstraction Point Risk Assessment Summary


Is a Drinking Water Abstraction Risk Assessment required in the

AER (or outstanding from a previous AER) No

Does the Drinking Water Abstraction Risk Assessment identify

whether any of the discharges in Schedule A of the licence pose a

risk to a drinking water abstraction

N/A

Does the assessment identify if any other discharge(s) from the

works pose a risk to a drinking water abstraction (includes

emergency overflows)

N/A

What is the overall risk ranking applied by the licensee N/A

Does the risk assessment consider the impacts of normal operation N/A

Does the risk assessment consider the impacts of abnormal

operation (e.g. incidents /overflows) N/A

Does the risk assessment include control measures for each risk

identified N/A

Does the risk assessment consider operational control measures

e.g? waste water incident notification to drinking water abstraction

operator

N/A

Does the risk assessment include infrastructural control measures N/A

Does the Improvement Programme for the agglomeration include

control measures / corrective actions to eliminate / reduce priority

substances identified as having an impact on receiving water

quality?

N/A

15 | Irish Water

5.3 Shellfish Impact Assessment Report.

The Shellfish Impact Assessment Report is not required for this agglomeration.

Table 5.3 - Preferred format for Shellfish Impact Assessment Summary

Is a Shellfish Impact assessment required in the AER (or outstanding from a previous AER)? No

List prescribed organisations consulted when preparing the assessment (BIM, SFPA, MI) N/A

Does the assessment consider the impact of all discharges from the works? N/A

Does the assessment identify that any of the discharges from the works are impacting on the microbiological quality of the shellfish?

N/A

Does the assessment recommend that there is a requirement to install UV/other disinfection equipment on any of the discharges?

N/A

Provide details on disinfection system to be employed N/A

Has this been completed? N/A

If not yet complete what is the expected date for completion? N/A

Where disinfection is required, is there a programme in place to demonstrate the efficiency of any disinfection system in place?

N/A

What is the demonstrated efficiency of the disinfection system? N/A

Is there a shellfish monitoring programme in place? N/A

Does the shellfish or shellfish water monitoring programme include results generated by other organisations

N/A

List organisations contributing data to the assessment N/A

Does the Improvement Programme for the agglomeration include the findings and recommendations of the shellfish impact risk assessment?

N/A

16 | Irish Water

5.4 Toxicity / Leachate Management

The Toxicity / Leachate Management Assessment report is not required for this agglomeration. Table 5.4 - Toxicity / Leachate Management Report Summary

Is a Toxicity / Leachate Management Report required in the AER (or outstanding from

previous AER) No

What % of the total influent for the year is leachate? N/A

Does leachate addition exceed 4% ((volume) of the influent load at any time? N/A

Maximum leachate loading rate N/A

Does the leachate study identify any constituents of the material that present an

environmental risk? N/A

List leachate constituent identified and impact (insert a row for each constituent) N/A

Has the WWTP suitability to treat the leachate been assessed? N/A

What are the results of the assessment (Suitable / Not Suitable / Suitable subject to

improvement programme works completion) N/A

Has the study identified the max and operational loadings (mass, volume and rate of

addition) for leachate to the WWTP? N/A

Is there a monitoring programme for the priority substances identified above? N/A

Have trigger and action levels for the concentration of identified leachate constituents

been established to prevent impact on the receiving water? N/A

Does the Improvement Programme for the agglomeration include any procedural and/or

infrastructural works to reduce the impacts of leachate acceptance on the operation of the

wwtp?

N/A

5.5 Toxicity of the Final Effluent Report

The Toxicity / Leachate Management Assessment report is not required for this agglomeration. Table 5.5 - Toxicity of the Final Effluent Assessment Summary

Is a Toxicity report required? (Condition 4) No

Has the study been carried out against 4 species in 3 trophic levels? N/A

Does the report identify that the discharge is toxic to any of the species in the study? N/A

List species impacted N/A


infrastructural works to reduce the toxicity of the final discharge? N/A

17 | Irish Water

5.6 Pearl Mussel Measures Report

A sub-basin management plan in relation to Pearl is not required for this agglomeration. Table 5.6 - Pearl Mussel Measure Report Summary

Is a progress report on implementation of the findings of Pearl Mussel Protection Measures

report required in the 2014 AER (or outstanding from previous AER) N/A

Is there a Pearl Mussel Protection Measures Report for the receiving water body? N/A

Include hyperlink to internet location of report N/A

Does this report identify measures relevant to discharges from the waste water works as

having a potential impact on the Pearl Mussel habitat? N/A

List measures relevant to discharges from the waste water works N/A


infrastructural works to reduce the impacts of discharge on pearl mussel habitat / populations? N/A

List Condition 5 Improvement Programme reference N/A

18 | Irish Water

5.7 Habitats Impact Assessment Report

The Habitats Impact Assessment Report is not required for this agglomeration. Table 5.7 - Habitats Impact Assessment Summary


Is a Habitats Assessment required in the AER (includes outstanding

assessments from previous years)? No

Was the scope of the study agreed in advance with NPWS N/A

Does the report include a Stage 1 screening assessment? N/A

Does the screening identify that discharges are causing an impact on listed

sites? N/A

Does the report require a Stage 2 Appropriate assessment? N/A

Does the report identify any European Sites (e.g. SPA, SAC, NHA) that

discharges from the works could have an impact on? N/A

List European sites identified (insert a line for each site identified) N/A

Does the report include mitigation measures for each identified impact? N/A

Does each measure explain how the adverse impact will be avoided/reduced? N/A

Does the Improvement Programme for the agglomeration include any

procedural and/or infrastructural works to reduce the impacts of discharges

on the a listed site (NHA, SAC, SPA)?

N/A

19 | Irish Water

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 (insert lines as required) Additional SWO

identified

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 (insert lines as required) N/A

Have these processes commenced? (i.e. Request for Technical Amendment /

Licence Review / Change Request) No, due to

commence in 2016

Are all outstanding reports and assessments from previous AERs included as an

appendix to this AER? N/A

List outstanding reports (insert lines as required) N/A

Declaration by Irish Water

The AER contains the following;

Introduction and background to 2015 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: ____16/03/16________________ Gerry Galvin Chief Technical Advisor

20 | Irish Water

Section 7. Appendices

Appendix 7.1 - Annual Statement of Measures Appendix 7.2 - Ambient monitoring summary Appendix 7.4 – Storm Water Overflow Identification & Inspection Report Appendix 7.5 – Specified Improvement Programme Appendix 7.6 – Sewer Integrity Tool Output Appendix 7.7 - Priority substances assessment

Appendix 7.1 Statement of Measures



Statement of Measures

Ref. No. Problem/Issue Measure(s) to be Taken Timescale for Completion

Action By

1 Plant Breakdown at Waste Water Treatment Plant

Ensure all items of equipment are connected to SCADA system and that alarms are issued to relevant personnel in event of plant failure.

31/12/2016 Irish Water / Cavan County Council

2 Network Blockage Implement system to ensure, (i) The carrying out of routine inspections of network, (ii) the immediate investigation of all reported blockages, (iii) the carrying out of unblocking/jetting of sewer lines as required, and (iv) develop programme for rehabilitation of damaged pipe network.

31/12/2016 Cavan County Council

3 Pumping Station Failure Ensure all items of equipment are connected to SCADA system and that alarms are issued to relevant personnel in event of plant failure.


4 Blockages at Pumping Stations Implement system to ensure, (i) The carrying out of routine inspections of network, (ii) establish programme of routine cleaning of pumping station sumps and pumps, (iii) the immediate investigation of all reported blockages, (iv) the carrying out of unblocking/cleaning of pumping station sumps and pumps as required, and (v) upgrade pumping stations incl. pumps as required.


5 Storm Water Discharges Ensure monitoring system in place to alert for and monitor storm water discharges. Provide adequate storm water storage at WWTP.


6 Comply with WWDL ELVs Monitor discharge from WWTP to ensure compliance with ELVs. Carry out regular process control inspections on plant performance.


7 On-going non-compliance with ELVs due to infrastructural inadequacies.

Identify infrastructural inadequacies including insufficient organic or hydraulic load capacity and upgrade WWTP to ensure adequate capacity in place.

As required Irish Water / Cavan County Council

8 Maintain records and submit reports

Maintain records on plant performance and maintenance and submit reports as required.


9 Comply with WWDL Conditions Ensure that all requirements of WWDL are satisfied. 31/12/2016 Irish Water / Cavan County Council

Appendix 7.2 Ambient Monitoring Summary



Kingscourt Ambient Monitoring Receiving Water: Mullantra Stream Upstream Monitoring Point: u/s ambient TPEFF0200D0083SW001

Downstream Monitoring Point: d/s ambient TPEFF0200D0083SW001

Station Name

Station Local Code Sample Date

Ammonia (N) mg/l

BOD mg/l

Dissolved Oxygen % Saturation

Ortho-P (mg/l)

pH (pH

units) Total P

(P) mg/l

d/s ambient TPEFF0200D0083SW001 710 07/04/2015 0.035 2 118 0.052 8.27

d/s ambient TPEFF0200D0083SW001 710 19/05/2015 0.036 <1.5 100 0.054 8.1

d/s ambient TPEFF0200D0083SW001 710 30/06/2015 0.052 <1.5 93.7 0.102 8.1 0.167

d/s ambient TPEFF0200D0083SW001 710 25/08/2015 0.259 >9 92.5 0.128 7.93

d/s ambient TPEFF0200D0083SW001 710 21/10/2015 0.09 3 99.4 0.093 8.06

d/s ambient TPEFF0200D0083SW001 710 03/11/2015 0.124 <1.5 93.3 0.081 8.16

d/s ambient TPEFF0200D0083SW001 710 24/11/2015 0.403 2 92.6 0.085 8.05

u/s ambient TPEFF0200D0083SW001 700 07/04/2015 0.033 2 115 0.024 7.92

u/s ambient TPEFF0200D0083SW001 700 19/05/2015 0.04 <1.5 99 0.018 7.91

u/s ambient TPEFF0200D0083SW001 700 30/06/2015 0.175 <1.5 91.2 0.031 7.95 0.059

u/s ambient TPEFF0200D0083SW001 700 25/08/2015 0.396 7 93 0.075 7.89

u/s ambient TPEFF0200D0083SW001 700 21/10/2015 0.094 4 97.3 0.053 7.85

u/s ambient TPEFF0200D0083SW001 700 03/11/2015 0.094 9 92.9 0.042 7.81

u/s ambient TPEFF0200D0083SW001 700 24/11/2015 0.125 <1.5 93.9 0.035 7.8

Summary of Results for 2015

Station Name

Station Local Code

Ammonia (N) mg/l

BOD mg/l

Dissolved Oxygen % Saturation

Ortho-P (mg/l)

pH Total P (P)

mg/l (pH units)

Mean d/s ambient

710 0.143 2.9 98.5 0.085 8.1 0.167

Mean u/s ambient

700 0.137 3.8 97.5 0.040 7.9 0.059

95%ile d/s ambient

710 0.360 7.2 112.6 0.120 8.2 0.167

95%ile u/s ambient

700 0.330 8.4 110.2 0.068 7.9 0.059

Appendix 7.4 Storm Water Overflow Assessment



ii | Irish Water

Table of Contents

1 Introduction 3 2 Storm Water Overflow Assessment 4

2.1 Description of SWOs 4

2.2 Assessment of Operating Criteria of SWOs 4

2.3 Assessment of Design Criteria of SWOs 5 2.3.1 Compliance with Formula A ............................................................................................ 5

2.3.2 Significance of Spill .......................................................................................................... 5

2.4 Assessment of Requirement for Storage 6 3 Remedial Measures to Ensure Compliance 9

3.1 Specified Improvement and Improvement Programme Works 9

3.2 Additional Measures 9

3 | Irish Water

1 Introduction

This report has been prepared for D0083-01, Kingscourt, in County Cavan in accordance with the

requirements of Condition 4.13 of the wastewater discharge licence for the agglomeration. This

report identifies storm water overflows within the agglomeration and assesses the compliance of

the storm water overflows with the criteria set out in the DoEHLG document on ‘Procedures and

Criteria in Relation to Storm Water Overflows’, 1995.

There are 2 Nr. SWOs within the agglomeration. These are listed in Table 1.

Table 1: Storm Water Overflows in the Agglomeration

Licence Code

Discharge Location Receiving Water Name and WFD Code

WFD Status of Receiving Water

Other designation of receiving water Easting Northing

SW002

277329 295755 Cabra Stream IE_NB_06_712

Unassigned (Cabra Stream) Moderate (Glyde River)

none

SW0041 Information not available at the time of preparing this report

Cabra Stream IE_NB_06_712

Unassigned (Cabra Stream) Moderate (Glyde River)

none

A storm water overflow assessment is required to comply with the requirements of the wastewater

discharge licence condition as detailed below.

Condition 4.13 - Storm Water Overflows

4.13.1 The licensee shall, prior to the date for submission of the second AER (required under

Condition 6.8), carry out an investigation for the identification and assessment of storm

water overflows. A report on the storm water overflows shall be submitted to the Agency as

part of the second AER. All storm overflows shall be in compliance with the criteria for storm

water overflows, as set out in the DoEHLG Procedures and Criteria in Relation to Storm

Water Overflows’, 1995, and any other guidance as may be specified by the Agency.

4.13.2 The licensee shall carry out an assessment of storm water overflows at least once

every three years thereafter and report to the Agency on each occasion as part of the AER.

The assessment shall include a determination of compliance with the criteria for storm water

overflows, as set out in the DoEHLG ‘Procedures and Criteria in Relation to Storm Water

Overflows’, 1995 and any other guidance as may be specified by the Agency. The licensee

shall maintain a written record of all assessments and remedial measures arising from the

assessment.

1 SW004 identified as part of the current study, and therefore is not currently included in the WWDA.

4 | Irish Water

2 Storm Water Overflow Assessment

2.1 Description of SWOs

Kingscourt Wastewater Treatment Plant (WWTP) is located at Corgarry townland. There is one

licensed SWO in the agglomeration, which is located at the treatment plant (SW002).

The storm water diversion chamber is located upstream of the preliminary treatment units.

Diverted storm water flows to a retention tank (250 m3 approximate capacity). At present, storm

water overflows from the site are not screened.

In the event the capacity of the retention tank is reached, excess storm water overflows to the Cabra

Stream, via a 300mm diameter cast iron pipe. However, in general, when storm conditions abate

and incoming flows return to acceptable levels, storm water is pumped back to the treatment works.

Based on information obtained from the Plant Operator, the SW002 can occasionally give rise to

visual impact at the receiving waters.

As part of this study, an unlicensed SWO has been identified on the network. This is referred to as

SW004 in this report. Technical information regarding SW004 was not available at the time of

preparing this report.

2.2 Assessment of Operating Criteria of SWOs

The following criteria for each SWO on the network have been examined in accordance with

the assessment criteria set out in Procedures and Criteria in Relation to Storm Water

Overflows in order to determine possible capacity constraints.

1. Does the SWO cause significant visual or aesthetic impact and public complaints 2. Does the SWO cause deterioration in water quality in the receiving water (i.e. is there a

deterioration in ecological quality status attributable to the SWO) 3. Does the SWO gives rise to failure in meeting the requirements of national regulations on

foot of EU Directives (e.g. bathing water quality standards, shellfish water quality standards, Water Framework Directive status etc.),

4. Does the SWO operate in dry weather.

Table 2: Assessment of Operating Criteria CSO Ref

Causes significant visual or aesthetic impact and public complaints.

Causes deterioration in water quality in the receiving water

Gives rise to failure in meeting the requirements of national Regulations on foot of EU Directives.

Operates in dry weather

Compliant / Non-Compliant

SW002 Yes Unknown Unknown No Unknown

SW004 No2 Unknown Unknown No Unknown

Based on information obtained from Cavan County Council, SW002 is stated to cause visual

impact on the receiving waters on an intermittent basis. Two complaints were received

during 2015 regarding the storm water overflow.

2 Minor visual impact noted, based on information contained from Plant Operator.

5 | Irish Water

A compliant was received from a member of the public on 5 January 2015 regarding untreated

storm water overflows from Kingscourt WWTP to the adjacent stream.

On 19 August 2015, correspondence was received from Inland Fisheries Ireland regarding the

discharges from SW002.

Proposed remedial measures are described in Section 3.2 (below).

Both SW002 and SW004 discharge to Cabra Stream. There is one drinking water abstraction

points within 10km of the discharge point (close to the confluence of the Glyde River with the

River Lagan). The receiving water is not designated under the European Communities (Quality

of Salmonid Waters) Regulations 1988 (SI 293/1988). Cabra Stream confluences with the

Glyde River less than 1km downstream of the WWTP. Neither waterbody has been

designated as nutrient sensitive in the Urban Waste Water Treatment (Amendment)

Regulations, 2010 (SI 48/2010) and have not been identified as a designated bathing waters

by Cavan County Council3.

As no physico-chemical monitoring data was available for the Cabra Stream, the potential

impact of SW002 and SW004 is not assessable at present.

2.3 Assessment of Design Criteria of SWOs

2.3.1 Compliance with Formula A Formula A is used in the Procedures and Criteria in Relation to Storm Water Overflows as follows:-

Formula A = DWF + 1.36P + 2E (m3/day)

P = design domestic population contributing to SWO (to be estimated)

E = design industrial effluent flow (estimated to be 20% of domestic PE unless otherwise by LA)

DWF = Dry weather flow m3/day (dry weather flow of total PE, based on 0.175m3/PE/day)

2.3.2 Significance of Spill Monitoring information in relation to frequency and duration of overflows is detailed below.

Storm water overflows from SW002 are recorded and logged via the county-wide telemetry

system.

Figure 1 demonstrates storm water overflow activity during 2015.

3 Source - EPA Splash web tool

6 | Irish Water

Figure 1 Storm water overflow activity during 2015.

As seen in the above overflows have occurred intermittently during 2015. Frequent spills from the storm water retention tank may be as a result of the infiltration effects from the network. Information regarding the overflow setting was not available. Refer to remedial measures section.

The significance of overflows to inland freshwaters has been assessed as follows:

Low Significance:

>8:1 Dilutions in Receiving water (average SWO DWF / 95%ile river flow) No interaction with other discharges

Medium Significance - only if all these criteria apply.

Dilution < 8 : 1 Limited or no interaction with other discharges > 2,000 population equivalent Cyprinid fishery

High Significance - only if all these criteria apply.

Dilution < 2 : 1 Interaction with other discharges > 10,000 population equivalent Cyprinid or salmonid fishery

Table 3: Assessment of Significance CSO Ref Dilution PE Range Designation of Receiving

Water

Significance

SW002 1.6 2,000 – 10,000 Cyprinid fishery Medium

SW004 1.6 2,000 – 10,000 Cyprinid fishery Medium

2.4 Assessment of Requirement for Storage

The necessity for a storm tank within the sewer network has been assessed based on available dilution as detailed in Table 3 (from Procedures and Criteria in Relation to Storm Water

7 | Irish Water

Overflows) included as Table 4 below. The requirement for a storm tank at a wastewater treatment plant shall be based on an overflow setting of 3 DWF. Table 4 – SDD Method Recommended Storage at Overflows1

Dilution Factor2 Overflow Setting Storage Tank

> 8 Formula A None

> 6 Formula A + 455 P or Formula A

None 40 l/PE

> 4 Formula A 40 l/PE

> 2 Formula A 80 l/PE

> 1 Formula A 120 l/PE 1. Table 3 extracted from Procedures and Criteria in Relation to Storm Water Overflows

2. Dilution factor = average DWF / 95%ile river flow

More information is required for SW004 in order to estimate storage requirements at this location.

Following these criteria, the stormwater storage within agglomeration have been assessed (Table 5).

The information contained in the WWDA for Kingscourt included a population equivalent estimate of 2,245 PE (based on a 2008 flow and load survey). Table 3 provides an estimation of the domestic population in 2015 from census data. Table 3: Estimation of Population using Census data.

Year Population Projected growth rate (%/annum)

2011 23264

Expected 2015 2444 1.24% per annum5

Based on the above figures, the estimated current population of Kingscourt is 2,444. Assuming a 16% allowance for non-domestic commercial loadings (391 PE), and an industrial loading of 220 PE (WWDA data) the estimated total loading to the WWTP for 2015 is 3,054 PE.

Table 5 – Storm water Storage within Agglomeration

CSO Ref

Dilution Factor1

Required Overflow Setting (l/s)

Actual Overflow Setting (l/s)

Required Storage Tank Volume2 (m3)

Actual Storage Tank Volume (m3)

Compliant / Non-Compliant

SW002 1.6 Formula A = 47 l/s

Information not available

134 250 Unknown

SW004 1.6 Unknown Unknown3 Unknown Unknown Unknown 1. Dilution factor = average DWF / 95%ile river flow

2. Required volume was estimated based on available information regarding current plant loading.

3. A network survey is due to be undertaken shortly, which will capture information regarding SW004.

The storm water retention required at the WWTP was estimated based on SEPA Supporting

Guidance (WAT-SG-13) Municipal Sewage Treatment Works (STW) Guidance. The design

guidance requires storm water retention to be least onerous of:

2 hours retention of Formula A - FFT

4 CSO 2011 population for Kingcourt Town. 5 ESRI urban average annual % growth rate 2011 to 2024 used for growth in Cavan in towns of 1500 people or more

8 | Irish Water

68 litres storage per head (domestic only)

2 hours retention at 3DWF

9 | Irish Water

3 Remedial Measures to Ensure Compliance

3.1 Specified Improvement and Improvement Programme Works

The specified improvement works included in the licence for the agglomeration and

improvement programme items identified in licence reports are listed in Table 5 below.

Table 5 – Specified Improvement Works

Specified Improvement / Improvement Programme Reference

Description Current Status License Reference:

WWDA D0083-01

SW003 Storm Water Overflow to be discontinued with a discontinuation date of 31/01/2014

f) complete Schedule C.2

AER 2014 – Statement of Measures

“Storm Water Discharges – Monitor discharge from WWTP to ensure compliance with ELVs. Carry out regular process control inspections on plant performance.”

f) complete - Discharge is currently being monitored. A number of process checks have been undertaken by the IW Process Optimisation Team and Cavan County Council.

Appendix 7.1, Ref. 5

3.2 Additional Measures

The additional measures required, identified in this report are as follows:

With regards to SW002, adequate storm water retention volume appears to have been

provided at the WWTP for the estimated current plant loading. Overflows from the site are

intermittent. An investigation into potential sources of surface water/groundwater infiltration

on the network is recommended with the aim of clean water separation and reduction of

hydraulic loading at the WWTP. It is noted that such investigations are due to commence

shortly (detailed below).

Improvements to the inlet works at the WWTP are currently at planning stage and are due to

be delivered under an Irish Water Minor Programme. This will include ensuring flows up to

Formula A receive fine screening. A baffle will be installed at the storm water discharge such

that, at minimum, gross solids will be captured on all flows in excess of Formula A.

With regards to SW004, this network CSO was identified as part of the current reporting. A

network survey including CCTV and manhole survey is due to be delivered shortly by Irish

Water and Cavan County Council. Little information is currently known about SW004,

therefore the information gathered during the network survey will inform a more complete

SWO assessment in future.

Appendix 7.5 Specified Improvement

Programme



The Specified Improvement Programme as detailed in Schedule C2 of the WWDL has been completed.

Table 4.2.1 - Specified Improvement Programme Summary

Specified Improvement Programmes

(under Schedule A

and C of WWDL)

Licence Schedule (A or C)

Licence Completion

Date

Date Expired? (N/NA/Y)

Status of Works ((i) Not Started; (ii) At

planning stage; (iii) Work

ongoing on-site; (iv)

Commissioning Phase; (v)

Completed; (vi) Delayed;)

% Construction

Work Completed

Timeframe for

Completing the Work

Comments

Discontinue Storm water Overflow SW003

C2 31/01/2014 Y Completed 100% N/A Storm water Overflow Discharge SW003 to Reed Beds Discontinued.

The following programme of works have been identified in regard to improving plant operation both physical works and process improvements.

Detailed Network Study to include for hydraulic loadings including storm flows. (Contract Docs currently being prepared).

Provision of Sludge Holding tank including PFT. .(Contract Docs currently being prepared).

Calibrate and verify inlet and outlet flow meters.

Carry out a weekly BOD loading analysis and adjust the process parameters as required

Clean out clarifier and inspect scrapers and repair/replace as necessary

Investigate if increasing the frequency of de-sludging from the Primary Settlement Tank could be carried out to improve the performance of the plant.

Operate both trickling filters together to allow steady "wetting" instead of current intermittent duty/standby arrangement.

That bio-filters are fed more regularly (wetting rate) at DWF in order to develop a healthly bio-film.

That repair work be carried out on distribution arms of bio-filter to enable optimum treatment.

Appendix 7.6 Sewer Integrity Tool Output



Section 1.1 Agglomeration DetailsName Licence Number

Insert Name of Catchment if the Risk Assessment is for part of an

agglomeration (only divide agglomeration where p.e. >5,000p.e.

and where such division is warranted)

Date Licence IssuedCurrent Date

Year Year Year Year

Waste Water Works - Wastewater Treatment Plant Details Unit 2015 2016 2017 20181.1 Is there an existing WWTP in operation? Yes Yes Yes Yes

Section 1.2 BOD Loading & Population Equivalent

1.2Average Daily Influent Flow or Average Total Flow in system (If no

measured data exists, insert estimated figure) l/day, measured 846000

1.3Average Daily Influent BOD or Average BOD Load from area served (If

no measured data exists, insert estimated figure) mg/l, measured 135.6

1.4 Total BOD Load kg/day 114.7176 0 0 0

1.5 Average Population Equivalent (@0.06kg/person/day) p.e. 1912 0 0 0

1.6 Estimated (existing) Non-Domestic Load p.e. 610

1.7 Estimated Domestic Load p.e. 1302 0 0 0

1.8 Occupancy Rate for the Agglomeration pop/house 2.8

1.9 Estimated Number of Connected Properties houses 465 0 0 0

1.10Number of properties within the agglomeration when compared with

CSO Data or An Post Geodirectory houses 865

Section 1.3 Hydraulic Details

1.11Average Dry Weather Flow arriving at WWTP OR Total Average DWF

in system (If no measured data exists insert estimated figure) l/s, measured 6.2

1.12 Estimated 3DWF l/sec 18.60 0.00 0.00 0.00

1.13Annual Average Peak Flow to WWTP or discharging from whole

system if there is no existing WWTP l/s, measured 52

1.14This Annual Average Peak as Multiples of Dry Weather Flow (Peaking

Factor) Nr 8.39 0.00 0.00 0.00

1.15 Highest Peak Flow Recorded (Insert UNKNOWN if no records exist) l/s UNKNOWN

1.16Does this Peak Flow (multiple of DWF) cause hydraulic capacity

problems within the network ? --- Yes Yes Yes Yes

1.17 Total Rainfall for Previous Year mm 1269

1.18 Comparison - Mean Annual Rainfall for the agglomeration mm 1007

1.18.1 Define the Weather Station Used Ballyhaise

1.19If Storm Water Storage is available at the Wastewater Treatment plant,

what is the volume of the storm tank ? m3

250

1.20Is the capacity of the storm tank sufficient to capture and retain all

overflows to the tank ?--- No No No No

1.21Total monthly average volume of Storm Water Stored or Returned for

Treatment within the Waste Water Treatment Plant m3 per monthsw return not metered

1.22If the answer to 1.20 above is No, What is the estimated frequency of

Overflows from the Storm Tank ? (N/A if no overflow)

> 5 times per

month< 1 per month

1 to 2 times

per month< 1 per month

Waste Water Works - Sewer Network Details Unit 2015 2016 2017 2018

Section 1.4 Waste Water Works - Gravity Sewer Details

1.23 What database is used to maintain records of the sewer network Other Record SUS 2001 SUS 2002 SUS 2003

1.23.1 If other or combination of the above please describe Describe

SUS25 &

AutoCad Drgs

-pdfs only

1.24Total length of sewers (use drop down menus to define whether these

figures are estimated or measured)km Estimated

6.50 0.00 0.00 0.00

1.24.1 Total length of sewers > 450mm Diameter km Estimated0.00

1.24.2 Total length of sewers > 300mm but ≤ 450mm in Diameter km Estimated0.50

1.24.3 Total length of sewers > 225mm but ≤ 300mm in Diameter km Measured0.00

1.24.4 Total length of sewers ≤ 225mm in Diameter km Estimated6.00

1.24.5 Other km Estimated Unknown

1.25 Pipeline Material

1.25.1 What portion of the sewer network consists of Concrete Pipes % Estimated 85%

1.25.2 What portion of the sewer network consists of Plastic Pipes % Estimated 10%

1.25.3 What portion of the sewer network consists of Clay materials % Estimated 5%

1.25.4 What portion of the sewer network consists of Brick Type Sewers % Estimated 0%

1.25.5 What portion of the sewer network consists of Other Materials % Estimated 0%

1.26 Total number of Storm Water Overflows Nr 2

12/02/2016

KINGSCOURTD0083-01

25/02/2014

NOT APPLICABLE

1.27What Screening or other mechanical devices are employed at the

storm water overflows

SWO No. SW002 located at Kingscourt WWTP DescribeSW diversion to retention tank. Unscreened

SWO No. SW004 located near sportsground in Kingscourt Describe Details unknown

1.28 Water Quality at the receiving waters

1.28.1

Where the receiving water is a river - indicate the EPA Biological

Rating of the Receiving Water for each SWO below (Particularly if

there is more than one receiving water within the agglomeration)

SWO No. SW02 located at Kingscourt WWTP (Q not assigned) Describe

SWO No. SW004 located near sportsground at Kingscourt (Q not

assigned)Describe

1.28.2

Where the receiving water is a coastal water indicate the Status of the

Receiving Water for each SWO below (Particularly if there is more

than one receiving water within the agglomeration)

1.28.3

With reference to the SWO's detailed above define if the receiving

waters are sensitive in accordance with the Urban Wastewater

Treatment Regulations as amended.

SWO No. SW002 located at Kingscourt WWTP Describe Not Listed

SWO No. SW004 located near sportsground at Kingscourt Describe Not Listed

1.28.4With reference to the SWO's detailed above define are the receiving

waters Protected Areas (designated or awaiting designation)

SWO No. SW002 located at Kingscourt WWTP Designation Not Listed

SWO No. SW004 located near sportsground at Kingscourt Designation Not Listed

1.28.5With reference to the SWO's detailed above define do the receiving

waters have any other designations.

SWO No. SW002 located at Kingscourt WWTP Designation Not Listed

SWO No. SW004 located near sportsground at Kingscourt Designation Not Listed

Section 1.5 Waste Water Works - Pumping Stations

1.29 Number of Pumping Stations (operated by the Local Authority) Nr 1

1.30 Total Length of Rising Mains (operated by the Local Authority) km UNKNOWN

1.31 Rising Main Material

1.31.1 What portion of the rising mains consists of ductile iron pipes % Measured UNKNOWN

1.31.2 What portion of the rising mains consists of plastic pipes % Measured UNKNOWN

1.31.3 What portion of the rising mains consists of other materials % Estimated UNKNOWN

1.32 Discharge Capacity of the Pump Set (s) at normal duty point

At Pump Station 1 at Oakgrove, Shercock Road UNKNOWN

1.33

What percentage of the pumping stations have recorded flow data (i.e.

if all pumping stations have flow meters on the rising mains then this

would read 100%)

% 0.00%

1.34Available Storage Capacity at Pump Stations

(include pump sump and any storm water/emergency overflow tanks)

At Pump Station 1 at Oakgrove, Shercock Road m^3 UNKNOWN

1.35Total Number of "Licenced Secondary Discharge Points and

Stormwater Overflows" at pumping stationsNr 0

1.36 Total Number of "Emergency Overflow Points" at pumping stations Nr 1

1.37What Screening or other mechanical devices are employed at the

secondary discharge points or emergency overflows ?

At Pump Station 1 at Oakgrove, Shercock Road Describe UNKNOWN

1.38 Water Quality at the receiving waters at each pumping station location

1.38.1

Where the receiving water is a river - indicate the EPA Biological

Rating of the Receiving Water for each secondary discharge point or

emergency overflow at each pumping station (Particularly if there is

more than one receiving water within the agglomeration)

At Pump Station 1 at Oakgrove, Shercock Road (Q not assigned) Describe

1.38.2

Where the receiving water is a coastal water indicate the Status of the

Receiving Water for each secondary discharge point or emergency

overflow at each pumping station (Particularly if there is more than one

receiving water within the agglomeration)

1.38.3

With reference to the pumping stations, for each secondary discharge

point or emergency overflow detailed above, define if the receiving

waters are sensitive in accordance with the Urban Wastewater

Treatment Regulations as amended.

At Pump Station 1 at Oakgrove, Shercock Road Not Listed

1.38.4


point or emergency overflow detailed above, are the receiving waters

Protected Areas (designated or awaiting designation) .

At Pump Station 1 at Oakgrove, Shercock Road (Q not assigned) Designation Not Listed

1.38.5


point or emergency overflow detailed above, do the receiving waters

have any other designations.

At Pump Station 1 at Oakgrove, Shercock Road Designation Not Listed

1.39Estimated Number of Private Pumping Stations within the

agglomeration (not operated by the Local Authority)Nr 1

Section 1.6 Reporting

Section 1.6.1 Reported Number of Sewer Related Complaints

('Complaint' as defined in the Discharge Licence)

1.40 Number of Reported Complaints Nr 4

1.41 Number of Reported Complaints which have been rectified Nr 4

Section 1.6.2 Reported/Recorded/Estimated Number of Secondary

Discharges

1.42 Number of Reported Secondary Discharges Nr 0

1.43 Number of Recorded Secondary Discharges Nr 0

1.44 Estimated Total Number of Secondary Discharges Nr 0 0 0 0

Section 1.6.3 Reported/Recorded/Estimated Number of

Emergency Overflow Discharges from Pumping Stations

1.45 Number of Reported Emergency Overflow Discharges Nr unknown

1.46 Number of Recorded Emergency Overflow Discharges Nr unknown

1.47 Estimated Total Number of Emergency Overflow Discharges Nr 0 0 0 0

Section 1.7 Operational Staff

1.48

In the four boxes below, describe the extent of operation staff

employed by the Local Authority to maintain and operate the sewer

network and pumping stations

(The individual personnel shall not be named , only grade and level of

training needs to be provided)

1.48.1

1 Nr. Part-time Caretaker employed at General Operative Level (with

basis H&S training) to operate & maintain the sewer network and

WWTP.

1 nr

1.48.2

1.48.3

1.48.4

Waste Water Works - Investment Details Unit 2015 2016 2017 2018

Section 1.8 Capital Investment works carried out since most

recent report (including works not included on WSIP Programme

or not WSIP funded)1.49 Sewers Upgraded or Replaced m 0

1.50 Sewers Rehabilitated m 0

1.51 Manholes Rehabilitated Nr 0

1.52 Local Repairs Nr 0

1.53 Total Length of sewers Upgraded, Replaced or Rehabilitatedm 0 0 0 0

1.54 Pumping Stations Operated by Local Authority Upgraded or Repaired Nr 0

1.55 WWTW operated by Local Authority Upgraded or Replaced Nr 0

1.56In the following two cells describe the actual Capital Investment

undertaken in the reporting period.

1.56.1There were no major capital or operational changes undertaken in

2015.

1.56.2

Section 1.9 Licence Specified Improvements Works

1.57 AER Section 4

Section 1.10 Other Updates Since Last Report

1.58 Sewer Network Survey currently being procured

Query Description Prompt Risk Score

Short

Commentary by

the Local

Authority

Comment or Action to be Taken

2.1

Has a Hydraulic Performance Assessment been

undertaken for the Sewer Network (e.g., Computer

Model or other Engineering Design or Design Review)

?

Yes 0

If the answer is No assess the need and cost

benefit of developing a computer model or

engineering design assessment of the Sewer

Network and complete Query 2.12. If the

answer is Yes proceed to Queries 2.1.1 to 2.1.4

inclusive

2.1.1If Answer to Query 2.1 is Yes, what % of the Network is

covered by the hydraulic assessment ?90% 0

The % coverage of the Network by the Hydraulic

Assessment can be estimated by the area

assessed against the area served by the

Network. ENTER "N/A" IF COMPUTER MODEL

or DESIGN DOES NOT EXIST. DO NOT LEAVE

BLANK OR ENTER "0".

2.1.2How many years has it been since the completion of the

hydraulic assessment ?more than 10 5 2001

Select N/A response if no design assessment or

design exists.

2.1.3Are the outcomes of the Hydraulic Assessment being

implemented ?No 5

Select N/A response if no design assessment or

design exists.

2.1.4How many years has it been since the outcomes of the

hydraulic assessment have been implemented ?less than 5 2

Select N/A response if no hydraulic performance

assessment or design exists. For onging works

select "less than 5".

2.2Has a Dynamic Computer Model been used to Assess

the Hydraulic Performance of the Sewer Network ?Yes 0

Computer Model means a Hydroworks/Infoworks

Model, Micro-Drainage Model or equivalent.

2.3

Has a Manhole Survey been undertaken in

accordance with WRc Documentation "Model

Contract Document for Manhole Location Surveys

and the Production of Record Maps" ?

Yes 0


benefit of undertaking a Manhole Survey and

complete Query 2.12.

If the answer is Yes proceed to Query 2.2.1

2.3.1If yes, how many years has it been since the survey was

undertaken or updated?more than 10 10 2001

Select N/A if no Manhole Survey has been

undertaken. Enter N/A value for Confidence

Grade if Prompt Box is "N/A"

2.4

Has a Flow Survey been undertaken in accordance

with WRc Documentation "A Guide to Short Term

Flow Surveys of Sewer Systems" and "Contract

Documents for Short Term Sewer Flows" ?

Yes 0


benefit of undertaking a Flow Monitoring Survey

and complete Query 2.12. .

If answer is Yes Proceed to Query 2.5

2.5 What was this Flow Survey Information Used for ?

2.5.1To Determine the extent of Problematic Sewer

CatchmentsYes 0

Select N/A if no Flow Survey has been

undertaken.

2.5.2To Verify a Computer or Mathematical Model of the

NetworkNo 10

Select N/A if no Flow Survey has been

undertaken.

2.6

Have Performance Criteria been developed to

determine the short, medium or long term capacity of

the sewer network ?

Yes 0

If the answer is No assess the Future Needs of

the Sewer Network and complete Query 2.12.

If the answer is Yes proceed to Query 2.8

2.7How many flood events resulting from surcharge in

the network have occurred in the past 3 years?1 to 3 5Back up from sewers into private gardens and limited disruption to traffic

Flood events in this context means water/sewage

backing up from the Network causing flooding of

properties or causing disruption of traffic

2.8Are there deficiencies in performance criteria within

the sewer network ?No 0

If the answer is No, Proceed to Query 2.10 and

complete Query 2.12.


2.9Have the causes of these deficiencies in the

Performance Criteria been identified and rectified ?N/A 0

If the answer is No, consider further examination

of the hydraulic model (if available) and complete

Query 2.12.


2.10

Can the Hydraulic Assessment (defined in Query 2.1

above) be used to determine the benefit of reducing

the contributory Impermeable Areas or extent of

surface water contributions

Yes 0

If the answer is No, consider further development

of the Hydraulic Assessment (or model if

available) and complete Query 2.12.


2.11Has an Impermeable Area Survey been carried out for

the agglomeration or parts of the agglomeration ?No 10

If the answer is No, consider the need and cost

benefit of undertaking an Impermeable Survey for

parts of the agglomeration which are under

hydraulic pressure and complete Query 2.12. .

47

2.12Prepare Assessment of Needs & Sewer Upgrade

Implementation Plan

2.13

Section 2.1 Hydraulic Risk Assessment

Total Risk Assessment Score (RAS)

In the AER Attach Assessment of Needs and Rehabilitation Implementation Plan as separate

documents

In the AER provide Summary of Proposed Works or Direction to be taken to improve hydraulic efficiency


Short

Commentary

by the Local

Authority


3.1What Environmental or Discharge Quality Data is

available with regard to the sewer network ?

up-to-date electronic or paper database

exists0

Select N/A if no discharges, secondary discharges or

overflows from network; if discharges do exist complete

Query 3.12

3.1.1 Do trade effluents discharge to the sewer network? Yes 20If the answer is No, proceed to Query 3.1.2.

If the answer is Yes, Proceed to Query 3.2

3.1.2 Are there Storm Water Overflows within the network ? Yes 20If the answer is No, proceed to Query 3.1.3.

If the answer is Yes, Proceed to Query 3.3

3.1.3Are there Secondary Discharges within the network

(excluding Emergency Overflows at Pump Stations)?No 0 If the answer is No, proceed to Query 3.1.4.

3.1.4Is there any evidence that exfiltration is occurring

from the network ?Unknown 20

If the answer is No, does all wastewater enter a

wastewater treatment plant (insert summary details in

the AER)?

If Yes, Proceed to Query 3.6

3.2

If Answer to Query 3.1.1 is "Yes", what % of trade

effluents have a licence to Discharge to the Public

Sewer ?

>90% 0

Select N/A if answer to Query 3.1.1 is No. If not all

trade effleunts are licenced, Local Authority should

consider issuing and controlling such discharges under

the appropriate Legislation.

3.2.1Are all licenced trade Discharges compliant with their

relevant licence and associated conditions Yes 0 unknown

Answer N/A if none of the trade effluents are licenced.

Answer No if this information is unknown. If the answer

is Unknown or No, consider issuing a direction to the

relevant Licencee.

If the answer is Yes, no further action is needed.

3.2.2

If Answer to Query 3.2.1 is "No", state what % of

Trade Discharges are NOT compliant with their

relevant licence and associated conditions (where

that non-compliance led to enforcement action)

N/A 0Select N/A if answer to Query 3.2.1 is Yes. If N/A is

selected as answer to Query 3.2.2

3.3

In accordance with the DoEHLG paper "Procedures &

Criteria in relation to Storm Water Overflows", what %

of storm water overflows in the system have been

classified for their significance?

50 - 74% 20

If the answer is No, consider a review of each

discharge within the sewer network complete and

Query 3.11.

If the answer is Yes, proceed to Query 3. 6

3.4Have samples from any Secondary Discharges within

the system been analysed ?N/A 0

Select N/A if no secondary discharges in system. If the

answer to Query 3.4 is No, consider examining the

quality of each secondary discharge within the sewer

network complete Query 3.11.

If the answer is Yes, proceed to Query

3.5

What percentage of discharges from the system are

known to cause environmental pollution of the

receiving waters ?

N/A 0

If the answer is greater than 50% then detail, in the

AER, the Improvement Programme necessary to

reduce this percentage.

3.6

In relation to possible exfiltration has a risk analysis

of ground water contamination or pollution been

undertaken ?

No 20

Select N/A if answer to Query 3.1.4 is NO. If the

answer is No, consider undertaking ground water risk

analysis and complete Query 3.12

If the answer is Yes, proceed to Query 3.6

3.6.1

If Answer to Query 3.6 is "Yes", have any

groundwater aquifers been identified in the area of the

Network and/or Discharge Points?

N/A 0Select N/A if no risk analysis of groundwater

contamination has been undertaken.

3.6.2

If Answer to Query 3.6.1 is "Yes", state the

classification of groundwater aquifer identified in the

area?



3.6.3

In relation to Query 3.6.1, is the aquifer used as a

source for Public, Private or Group Water Supply

Schemes?



3.7

Has an Impact Assessment of each Storm Water

Overflow been undertaken in accordance with the

DoEHLG paper "Procedures & Criteria in relation to

Storm Water Overflows" including setting

performance criteria?

No 40impact assessment carried out for SW002. data being collated for SW004

If the answer is No, consider assessing the risk

category of the receiving waters.

If the answer is Yes, proceed to Query 3.8 and provide

summary details of the assessment in the AER.

3.8What percentage of storm water overflows comply

with the performance criteria referred to in Query 3.7?11 - 50% 0SW002 likely to be compliant, but insufficient data to confirm

Select N/A if answer to Query 3.7 is No or if there are

no SWOs in system. (Risk Score is locked at 0 if no

SWOs in system is stated in Agglomeration Details)

3.9

Have the causes of these Capacity Deficiencies

(storm water overflows & Secondary Discharges)

been identified ?

N/A 0

Select N/A if answer to Query 3.7 is NO or if there are

no SWOs in system. If the answer to Query 3.9 is No,

consider further examination of the environmental

model or assimilative model. 140

3.10Prepare Assessment of Needs & Sewer Upgrade

Implementation Plan

3.11

Section 3.1 Environmental Risk Assessment


In the AER Attach Assessment of Needs and Rehabilitation Implementation Plan as separate documents

Provide Summary Details (in the AER) of records upstream and downstream of licenced discharges with regard to Environmental Performance of the network. These details can be included

as part of the AER submitted for the agglomeration.


Short Commentary

by the Local

Authority


4.1

Has a CCTV Survey been undertaken in accordance

with WRc Documentation "Model Contract Document

for Sewer Condition Inspections" and "Manual of

Sewer Condition Classification" ?

Yes 0

If the answer is No assess the need and benefit of

undertaking CCTV Survey.

If Yes Proceed to Query 4.2

4.1.1How many years has it been since the completion of the

CCTV Survey?more than 10 10 2001 If no CCTV has been undertaken, select "N/A" response

4.2 What was this CCTV Survey Information Used for?

Determine full extent of

Sewer Rehab Works to

be undertaken within

Network

0 Select N/A if answer to Query 4.1 is NO.

4.3

Has the CCTV Survey been used to Assess the

Structural Condition of the Sewer Network or

targeted sections of the Sewer Network?

Yes 0

If no CCTV has been undertaken, select "No" response.

If the answer is No assess the need and benefit of

undertaking an assessment of the Structural Condition of

the Sewer Network.

If the answer is Yes proceed to Q

4.4

Have Performance Criteria been developed to

determine the short, medium or long term structural

condition of the sewer network ?

Yes 0

If the answer is No, enter "unknown" in response to

Queries 4.4.1 to 4.4.5; consider assessing the Future

Needs of the Sewer Network.

If the answer is Yes proceed to Queries 4

4.4.1What % of the Total Sewer Length contains Collapsed or

Imminent Collapse of Sewers (Grade 5)unknown 30

Report was not

available

Insert Percentage of Overall Network Length; If a sewer

length contains a Grade 5 collapse, include the total

length of that sewer in calcuating the %. If information is

not available type "Unknown" into Prompt Box

4.4.2What % of Total Sewer Length contains Sewers Likely to

Collapse (Grade 4)unknown 25

Report was not

available


length contains a Grade 4 condition, include the total



4.4.3What % of Total Sewer Length contains sewers with

Further Possible Deterioration (Grade 3)unknown 10

Report was not

available


length contains a Grade 3 deterioration, include the total



4.4.4What % of Total Sewer Length contains sewers with

Minimal Collapse (Grade 2)unknown 5 Report was not available


length contains a Grade 2 feature, include the total



4.4.5What % of Total Sewer Length contains sewers of

Acceptable Structural Condition (Grade 1)unknown 5 Report was not available

Insert Percentage of Overall Network Length. If

information is not available type "Unknown" into Prompt

Box

75

If answers to Queries 4.4.1, 4.4.2 or 4.4.3 are above a

set level, the RAS for Query 4 is automitically set at the

maximum of 140.

4.5What % of the deficiencies, as detailed in Items 4.4.1,

4.4.2 and 4.4.3, have been rectified ?0 - 10% 35

Select N/A if answer to Query 4.4 is No. If the answer is

No, Proceed to Query 4.6

If the answer is Yes, what monitoring is in place to

ensure continued acceptance of structural condition?

Proceed to Query 4.7

4.6

Have the causes of the Structural Deficiencies

(Grades 3, 4 and 5) been identified or is there a

Preventative Maintenance Programme in place?

No 10

If the answer is No, consider further examination of the

sewer network, the structural loading conditions,

gradients and possible H2S Formation. If Yes completed

Query 4.7

130

4.7Prepare Assessment of Needs & Sewer Rehabilitation

Implementation Plan

Section 4.1 Structural Risk Assessment

If all % lengths are known, Check Total Length = 100%

In the AER Attach Assessment of Needs and Rehabilitation Implementation Plan as separate documents



Short Commentary

by the Local

Authority


5.1Are complaints of an environmental nature

recorded and held in a central database?Yes 0 Consider setting up Central Database for Complaints

5.2Is there an emergency response procedure in

place?Yes 0

Consider setting up target response times for dealing

with Complaints

5.3

What has been the highest frequency of flooding

in the network due to hydraulic inadequacy, over

the past 5 years?

None 0

Refers to flooding from the Network only, not natural

flooding from rivers/streams/high tides. Select the

highest number of events in any 12 month period.

5.4

What has been the highest frequency of flooding

in the network due to operational causes over the

past 5 years?

3 times/yr 12

Refers to flooding from the Network only, not natural

flooding from rivers/streams/high tides. Select the

highest number of events in any 12 month period.

5.5

What has been the highest frequency of

surcharging of critical sewers in the network, over

the past 5 years?

3 times/yr 8 assumed surcharging has occurred Select the highest number of events in any 12 month

period.

5.6What has been the highest frequency of reportable

incidents in the network, over the past 5 years?None 0

Select the highest number of events in any 12 month

period.

5.7

What has been the highest frequency of reportable

incidents due to discharges, for whatever reason,

from Pumping Station Emergency Overflows in

the network, over the past 5 years?

None 0 Select the highest number of events at any given

Pumping Station in any 12 month period.

5.8What has been the highest frequency of blockages

in sewers in the network over the past 5 years?>0.25/km/yr 20

Select the highest number of events per km of sewer

network in any 12 month period.

5.9What has been the highest frequency of collapses

in sewers in the network over the past 5 years?None 0 none reported


period.

5.10What has been the highest frequency of bursts in

rising mains in the network over the past 5 years?None 0 none reported


period.

40

5.11Prepare Up Dated Operational and Maintenance

Plan


Section 5.1 O&M Risk Assessment

Element

Risk

Assessment

Score

Risk Category % Risk ScoreMaximum Risk

Score

Section 2.1 Hydraulic Risk Assessment 47 Low Risk 31% 150

Section 3.1 Environmental Risk Assessment 140 Low Risk 28% 500

Section 4.1 Structural Risk Assessment 130 High Risk 87% 150

Section 5.1 O&M Risk Assessment 40 Low Risk 20% 200

Total RAS for Network 357 Low Risk 36% 1000

If the total RAS is greater than 750, or if any of the individual RASs are greater than 75% of the Maximum Available Score,

the Risk category for the Network is graded "High Risk"

Section 6.1 Summary of Risk Assessment Scores

Appendix 7.7 Priority Substances Assessment



ii | Irish Water

Table of Contents

1 Introduction 1 2 Desktop Study 1

2.1 Assessment of Analysis Required 1

2.2 Review outcome of Desktop study 1 3 Assessment of Significance and Recommendations 2

Appendix 7.7.1 – Screening of Parameters for Priority Substances

Appendix 7.7.2 – Priority Substance Screening Flowchart

Appendix 7.7.3 – Receiving Waters Priority Substance Data

1 | Irish Water

1 Introduction

This report has been prepared for D0083-01, Kingscourt, in County Cavan in accordance with the

requirements of Condition 6.8 / Schedule D of the wastewater discharge licence for the agglomeration.

This desk top study has been undertaken to determine the necessity, if any, for analysis of the

discharge to comply with the condition in the wastewater discharge licence based on the Guidance on

the Screening for Priority Substances for Waste Water Discharge Licences, issued by the EPA. Relevant

inputs to the waste water works and estimates of emissions from the discharge point have been taken

into account in the preparation of this report. Relevant inputs to the waste water works, any relevant

measurements / calculations / estimates of emissions from the discharge point and any relevant

measurements undertaken at representative downstream monitoring locations have been taken into

account in the preparation of this report.

Details of the emissions concentration for the primary discharge and impact on the receiving water

are included in Appendix 7.7.1.

2 Desktop Study

2.1 Assessment of Analysis Required

A. Review of all industrial inputs into WWTP

A review of all inputs into the wastewater treatment plant (WWTP) has indicated that there are no

authorised industrial type discharges, unauthorised discharges with a likelihood of priority substances,

leachate discharges or other imports. The wastewater influent to the WWTP is domestic in nature.

B. Discharge monitoring

The primary discharge has been analysed for priority substances.

Analysis data is included in Appendix 7.7.1 with details of the sample data and/or source of the data.

Analysis data includes the full list of priority substances listed in the EPA’s Guidance on the Screening

for Priority Substances for Waste Water Discharge Licences.

C. Downstream monitoring location’s participation in relevant monitoring programme

Any analysis data available for a representative downstream monitoring location from the discharge

point for the relevant parameters is included in Appendix 7.7.3 with details of the sample data and/or

source of the data.

D. Participation in PRTR reporting

PRTR Reporting not required for this agglomeration for 2015.

2.2 Review outcome of Desktop study

Full characterisation of the primary discharge has been achieved for all priority substances included in

Appendix 7.7.1. Priority substance concentrations were available for all parameters based on either

analysis or the EPA PRTR toolkit.

2 | Irish Water

A review of the national monitoring programme for priority substances in wastewater is proposed to

be undertaken by Irish Water in 2016 in consultation with the EPA. It is proposed that this review, in

consultation with the EPA, will determine the scope of future Priority Substances monitoring at Irish

Water WWTP’s.

3 Assessment of Significance and Recommendations

An assessment of the potential for impacts on receiving waters from priority substances in the primary

discharge has been carried out. The assessment considers the primary discharge relevant to

Environmental Quality Standards (EQS) for priority substances in surface waters, as set out in the

European Communities Environmental Objectives (Surface Waters) Regulations 2009, as amended.

A number of parameters have been identified as potentially being higher than the required EQS,

following dilution, as follows:- Fluoranthene, Benzo[k]fluoranthene, Benzo[ghi]perylene,

Benzo[b]fluoranthene, Benzo[a]pyrene,

There is a potential for some impact on the receiving waters based on the assessment carried out.

Further analysis is considered necessary to establish the impact, if any, on the receiving waters.

The EPA have prepared a report on priority substances, An Inventory of Emissions to Waters in Ireland.

This document states that Ireland appears to have relatively few problems associated with the

presence of Priority / Priority Hazardous substances in its surface waters. It identifies that wastewater

discharges are a potential source of metals in receiving waters with lead being the main metal

identified as associated with wastewater discharges. However, metals exceedences, in particular

those for cadmium, lead, and nickel are primarily associated with areas of historic mining activity.

Similarly PAH’s have been identified in stormwater overflows but the most significant source is

considered to be rainfall.

A consultation process with the EPA is proposed to be undertaken by Irish Water in 2016 to establish

appropriate levels of monitoring for priority and dangerous substances, taking into account the

particular requirements of the Water Framework Directive. This will allow a targeted monitoring

programme to be undertaken in areas where priority substances have been identified or industrial

discharges or imports provide a potential source, and where there is a shortfall of existing monitoring

data.

Does the assessment use the Desk Top Study Method or Screening

Analysis to determine if the discharge contains the parameters in

Appendix 1 of the EPA guidance

Desk Top Study and Screening Analysis

Does the assessment include a review of licensed / authorised inputs

to the works? Yes

Does the assessment include a review of other (unauthorised) inputs

to the works? Yes

3 | Irish Water

Does the report include an assessment of the significance of the

results where a listed material is present in the discharge? (e.g.

impact on the relevant EQS standard for the receiving water) Yes

Does the assessment identify that priority substances may be

impacting the receiving water? Yes

Does the Improvement Programme for the agglomeration include the

elimination / reduction of all priority substances identified as having

an impact on receiving water quality? No

4 | Irish Water

Appendix 7.7.1 – Screening of Parameters for Priority Substances

AA: Annual Average

MAC: Maximum Allowable Concentration

EQS: Environmental Quality Standards

Dilution factor in receiving water1: 3.8

No. Compound Group of compounds

AA-EQS Inland SW (µg/l)

AA-EQS Other SW (µg/l)

Measured /Estimated Conc. (µg/l)1

Data Source [Sample / PRTR / Other (state)]

Sample Date (if applicable)

Effluent Concentration above AA concentration (Yes/No)

Effluent Concentration above AA concentration after dilution (Yes/No)

1 Benzene VOCs 10 8 0.5 Sample 14/01/15 No No

2 Carbon tetrachloride VOCs 12 12 0.5 Sample 14/01/15 No No

3 1,2-Dichloroethane VOCs 10 10 0.5 Sample 14/01/15 No No

4 Dichloromethane VOCs 20 20 0.5 Sample 14/01/15 No No

5 Tetrachloroethylene VOCs 10 10 0.5 Sample 14/01/15 No No

6 Trichloroethylene VOCs 10 10 0.5 Sample 14/01/15 No No

7 Trichlorobenzenes VOCs 0.4 0.4 0.5 Sample 14/01/15 No No

8 Trichloromethane VOCs 2.5 2.5 0.5 Sample 14/01/15 No No

9 Xylenes (all isomers) VOCs 10 10 1 Sample 14/01/15 No No

10 Ethyl Benzene VOCs n/a n/a 0.5 Sample 14/01/15 No No

11 Toluene VOCs 10 10 0.5 Sample 14/01/15 No No

12 Naphthlene2 PAHs 2 2 1 Sample 14/01/15 No No

13 Fluoranthene1

PAHs 0.0063 0.0063 0.5 Sample 14/01/15 Yes Yes

2 The EQS for these substances shall take effect from 22 December 2015

5 | Irish Water









14 Benzo[k]fluoranthene3 PAHs MAC of

0.017 MAC of

0.017 0.5 Sample 14/01/15 Yes Yes

15 Benzo[ghi]perylene2

PAHs MAC of 8.2

x 10-3 MAC of 8.2

x 10-4 0.5 Sample 14/01/15 Yes Yes

16 Indeno[1,2,3-

c,d]pyrene2 PAHs 0.5 Sample 14/01/15 No No

17 Benzo[b]fluoranthene2

PAHs MAC of

0.017 MAC of

0.017 0.5 Sample 14/01/15 Yes Yes

18 Benzo[a]pyrene PAHs 1.7 x 10-4 1.7 x 10-4 0.5 Sample 14/01/15 Yes Yes

19 Di(2-ethylhexyl)phthalate (DEHP)

Plasticiser 1.3 1.3 2.5 Sample 14/01/15 Yes No

20 Isodrin4 Pesticides

∑=0.01 ∑=0.005

0.002 Sample 14/01/15 No No

21 Dieldrin3

Pesticides 0.002 Sample 14/01/15 No No

22 Diuron Pesticides 0.2 0.2 0.05 Sample 14/01/15 No No

23 Isoproturon Pesticides 0.3 0.3 0.0025 Sample 14/01/15 No No

24 Atrazine Pesticides 0.6 0.6 0.01 Sample 14/01/15 No No

25 Simazine Pesticides 1 1 0.01 Sample 14/01/15 No No

26 Glyphosate Pesticides 60 - 1 Sample 14/01/15 No No

27 Mecoprop Pesticides n/a n/a 0.02 Sample 14/01/15 No No

28 2,4-D Pesticides n/a n/a 0.025 Sample 14/01/15 n/a n/a

29 MCPA Pesticides n/a n/a 0.025 Sample 14/01/15 n/a n/a

30 Linuron Pesticides 0.7 0.7 0.025 Sample 14/01/15 No No

3 No indicative parameter is provided for this group of substances 4 ∑ of Aldrin, Dieldrin, Endrin and Isodrin.

6 | Irish Water









31 Dichlobenil Pesticides n/a n/a 0.003 Sample 14/01/15 n/a n/a

32 2,6-Dichlorobenzamide Pesticides n/a n/a 0.05 Sample 14/01/15 n/a n/a

33 PCBs PCBs n/a n/a 0.008 Sample 14/01/15 No No

34 Phenols (as Total C) Phenols 8 8 0.05 Sample 14/01/15 No No

35 Lead Metals 1.2 1.3 3 Sample 14/01/15 Yes No

36 Arsenic Metals 25 20 1.2 Sample 14/01/15 No No

37 Copper Metals 5 or 302 5 4.5 Sample 14/01/15 No No

38 Zinc Metals 8 or 50 or 1003

40 9 Sample 14/01/15 No No

39 Cadmium Metals

0.08 or 0.09 or 0.15 or

0.254

0.2

0.08 Sample 14/01/15 No No

40 Mercury Metals MAC of

0.07 MAC of

0.07 0.05 Sample 14/01/15 No No

41 Chromium VI Metals 3.4 0.6 1 Sample 14/01/15 No No

42 Selenium Metals n/a n/a 0.4 Sample 14/01/15 No No

43 Antimony Metals n/a n/a 0.6 Sample 14/01/15 No No

44 Molybdenum Metals n/a n/a 1.5 Sample 14/01/15 No No

45 Tin Metals n/a n/a 3.5 Sample 14/01/15 No No

46 Barium Metals n/a n/a 18.5 Sample 14/01/15 No No

47 Boron Metals n/a n/a 115 Sample 14/01/15 No No

48 Cobalt Metals n/a n/a 1 Sample 14/01/15 No No

49 Vanadium Metals n/a n/a 2 Sample 14/01/15 No No

50 Nickel Metals 4 8.6 1.5 Sample 14/01/15 No No

51 Fluoride General 500 1,500 150 Sample 14/01/15 No No

7 | Irish Water









52 Chloride General n/a n/a 52100 Sample 14/01/15 No No

53 TOC General n/a n/a 7500 Sample 14/01/15 n/a n/a

54 Cyanide General 10 10 4.5 Sample 14/01/15 No No

Conductivity General n/a n/a n/a n/a

Hardness (mg/l CaCO3) General n/a n/a unknown n/a n/a

pH General n/a n/a n/a n/a

Notes:

1. Where measured values are available these should be used instead of estimated values from PRTR tool.

2. In the case of Copper the value 5 applies where the water hardness measured in mg/l CaCO3 is less than or equal to 100; the value 30 applies where

the water hardness exceeds 100 mg/l CaCO3. Estimated CaCO3 value > 100 where no sampling data available (based on PRTR tool)

3. In the case of Zinc, the standard shall be 8 μg/l for water hardness with annual average values less than or equal to 10 mg/l CaCO3, 50 μg/l for

water hardness greater than 10 mg/l CaCO3 and less than or equal to 100 mg/l CaCO3 and 100 μg/l elsewhere. Estimated CaCO3 value > 100 where

no sampling data available

4. For Cadmium and its compounds the EQS values vary dependent upon the hardness of the water as specified in five class categories (Class 1: <40

mg CaCO3/l, Class 2: 40 to <50 mg CaCO3/l, Class 3: 50 to <100 mg CaCO3/l, Class 4: 100 to <200 mg CaCO3/l and Class 5: _200 mg CaCO3/l)

viii | Irish Water

Appendix 7.7.2 – Priority Substance Screening Flowchart

A flow chart for the screening of the presence of organic compounds and metals (Priority Substances)

from WWTP is included below. This flowchart shows that appropriate screening has been

demonstrated in line with the assessment undertaken in this report.

Full Characterisation

Screening for presence of organic compounds and metals (priority substances) with regard to the

parameters listed in Appendix 1

Depending on size of agglomeration / location carry out either one of the following: desktop study

OR analysis of primary discharge

Desktop study

A. Review all industrial inputs including septic tank /

package treatment plants and leachate to the WWTP

B. Ascertain if discharge(s) is/are part of any screening /

monitoring programme

C. Ascertain if a representative downstream monitoring point is part of any screening / monitoring

point

D. Ascertain if emissions data from WWTP

calculated / estimated

Review / outcome of desktop study

Full characterisation

Yes

Appropriate screening demonstrated

Scope and frequency of any subsequent monitoring to be agreed

with the Agency

ix | Irish Water

Partial Characterisation

Screening for presence of organic compounds and metals (priority substances) with regard to the

parameters listed in Appendix 1

Depending on size of agglomeration / location carry out either one of the following: desktop study

OR analysis of primary discharge

Desktop study

A. Review all industrial inputs including septic tank /

package treatment plants and leachate to the WWTP

B. Ascertain if discharge(s) is/are part of any screening /

monitoring programme

C. Ascertain if a representative downstream monitoring point is part of any screening / monitoring

point

D. Ascertain if emissions data from WWTP

calculated / estimated

Review / outcome of desktop study

Partial characterisation

Undertake analysis for the outstanding parameters

Revisit A above and undertake analysis of relevant parameters

Analysis for outstanding parameters to be undertaken in 2016 to complete screening process

Scope and frequency of subsequent monitoring to be agreed with the

Agency

x | Irish Water

Appendix 7.7.3 – Receiving Waters Priority Substance Data

EntityName Kingscourt Kingscourt

StationName Downstream discharge point Upstream discharge point

SampleDate 08/07/2008 08/07/2008

Ammonia(N) (mg/l) 3.55 0.11

Arsenic (µg/l) 1 1

Atrazine (µg/l) <0.01 <0.01

Barium (µg/l) 64 80

Boron (µg/l) 204 183

Cadmium (µg/l) <0.09 <0.09

Chromium (µg/l) 173 17

Conductivity @ 25°C (uS/cm) 663 664

Copper (µg/l) 8 6

Cyanide (µg/l) <5 7

Dichloromethane (µg/l) <1 <1

Fluoride (mg/l) 0.25 0.17

Lead (µg/l) 1 2

Mercury (µg/l) 0.3 0.3

Nickel (µg/l) 79 10

pH 7.6 6.9

Phenols (µg/l) 0.1 <0.1

Selenium (µg/l) 1 1

Simazine (µg/l) 0.01 <0.01

Toluene (µg/l) <1 <1

Total Hardness (mg/l) NT NT

Tributyltin(as Sn) (µg/l) <0.02 <0.02

Xylene (µg/l) <1 <1

Zinc (µg/l) 12 12