Castleisland Waste Water Treatment Plant. Annual Environmental Report. Page 1 of 36

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1 Water Services Dept. Castleisland Waste Water Treatment Plant Annual Environmental Report 2013 Licence Type: Waste Water Discharge Licence Licensee: Kerry County Council Licence Register Number: D Agglomeration Name: Castleisland Reporting Period: 01st January 2013 to 31st December 2013 Licence Period: 07th October 2011 to 31st December 2013 Page 1 of 36

2 SECTION 1 EXECUTIVE SUMMARY AND INTRODUCTION TO THE 2013 AER...4 INTRODUCTION...4 SECTION 2 MONITORING REPORTS SUMMARY Summary report on monthly influent monitoring Discharges from the agglomeration Ambient Monitoring Summary Data collection and reporting requirements under the Urban Waste Water Treatment Directive Pollutant Release and Transfer Register (PRTR)..6 SECTION 3 OPERATIONAL REPORTS SUMMARY Treatment Efficient Report Treatment Capacity Report Extent of Agglomeration Summary Report Complaints Summary Reported Incidents Summary SLUDGE\OTHER INPUTS TO THE WWTP...9 SECTION 4 INFRASTRUCTURAL ASSESSMENTS AND PROGRAMME OF IMPROVEMENTS Storm Water Overflow Identification and Inspection report Report on progress made and proposals being developed to meet the improvement programme requirements...11 SECTION 5 LICENCE SPECIFIC REPORTS Priority Substances Assessment Drinking Water Abstraction Point Risk Assessment Shellfish Impact Assessment Report Toxicity / Leachate Management Toxicity of the Final Effluent Report Pearl Mussel Measures Report Habitats Impact Assessment Report...14 Page 2 of 36

3 SECTION 7 APPENDIX...16 Appendix 7.1 Influent Monitoring..16 Appendix 7.2 Effluent Monitoring..17 Appendix 7.3 PRTR...20 Appendix 7.4 Sewer Tool..27 Appendix 7.5 Priority Substances 35 Page 3 of 36

4 Section 1 Executive Summary and introduction to the 2013 AER 1.1 Executive Summary Castleisland is a Market Town in east County Kerry. It's close to the Limerick border and close to the Cork border, as the main road to all towns in western and southern Kerry passes through here. The N21 from Limerick continues on to Tralee while the N22 goes to Killarney and other towns in southern Kerry. The towns population in the 2011 census was 2,513The Castleisland Wastewater Treatment Plant achieved its emission limit values in 2013 and is operating within its design capacity. There were no significant incidents or problems in 2013.The discharge from the agglomeration is not having any significant effect on the receiving waters (River Maine) Introduction Castleisland WWTP was built and commissioned in 1992 to provide preliminary and secondary treatment of waste water prior to discharge to the River Maine. It is an extended aeration type plant in which an active biological population is maintained in the aeration tanks followed by a secondary settlement and discharge of the treated effluent to the river Maine. The plant was granted a waste water discharge licence, D , on the 7 th October This is the third AER for the plant. It covers the period from January December 2013 Preliminary Treatment. Incoming flows up to 48 l/s are pumped by duty/standby screw pumps to the Preliminary treatment system. This comprises of a mechanically raked coarse screen (20 mm aperture) followed by a vortex grit trap and a fine screen (6 mm aperture). Screenings are treated on site and both screenings and grit are disposed of at North Kerry landfill. Secondary Treatment The activated sludge treatment process comprises of a single stage extended aeration system consisting of two number aeration tanks designed for BOD removal and nitrification, with twin secondary settlement tanks and a return sludge system. The aeration tanks operate in parallel and the flow is split equally between them. Activated sludge from the settlement tanks is pumped to the flow splitting chamber, upstream of the aeration tanks. In 2011 the surface aerators in the aeration tanks were replaced by a bubble diffused air system. This should result in reduced power consumption and increased capacity. Nutrient reduction was also introduced in 2011, Ferric Sulphate dosing to reduce P in the final effluent, resulting in final P values well within the ELV set out in the discharge licence. Page 4 of 36

5 Section 2 Monitoring Reports Summary 2.1 Summary report on monthly influent monitoring BOD (mg/l) COD (mg/l) SS (mg/l) TP (mg/l) Ammonia (asn) Hydraulic Loading (m3/d) Organic Loading (PE/day) Number of Samples Maximum Result 400 1, ,697 10,987 Mean ,423 5,468 Interpretation of Results: The average influent BOD is high at 233mg/litre. This is caused by the effluent from Castleisland Mart. 2.2 Discharges from the agglomeration WWDL ELV (Schedule A) ELV with Condition 2 Interpretation included Number of sample results Number of sample results above WWDL ELV Number of sample results above ELV with Condition 2 Interpretation included Mean (for parameters where a mean ELV applies) Overall Compliance (Pass/Fail) BOD (mg/l) COD (mg/l) TSS (mg/l) Total P (mg/l) Ammonia (as N) Orthophosphate as P pass pass pass pass pass pass Comment Interpretation of Results: The results indicate that Castleisland WWTP is achieving its current ELV s for the parameters listed in schedule A1 of the WWDL 2.3 Ambient monitoring summary Ambient Monitoring location from WWDL Grid Ref EPA Feature Coding Does assessment of the ambient monitoring results indicate that the discharge is impacting on water quality? Page 5 of 36

6 200m upstream from Primary waste water discharge 50m downstream of Primary waste water discharge E99672 N E99443 N Tool code No No Upstream Downstream Date Ph BOD Orthophosphate Ammonia Ph BOD Orthophosphate Ammonia (as P) (as P) 09/01/ /05/ /08/ /12/ Interpretation of Ambient Monitoring Results: The ambient monitoring results show that discharges from the Castleisland Agglomeration are not having a significant impact on the water quality in the River Maine. 2.4 Data collection and reporting requirements under the Urban Waste Water Treatment Directive This data has been forwarded via electronic submission to WasteWaterReturns@epa.ie on the 25 th February Pollutant Release and Transfer Register (PRTR) report for previous year This data has been submitted electronically to Eden on 3 rd March A copy of the PRTR is attached in Appendix 7.3 Page 6 of 36

7 Section 3 Operational Reports Summary 3.1 Treatment Efficiency Report cbod(k g/yr) COD (kg/yr) SS (kg/yr) Total P (kg/yr) Total N (kg/yr) Comment Influent mass loading (kg/year) 121, , ,478 2,077 4,168 None Effluent mass emission (kg/year) 1,210 9,099 1, None % Efficiency (% reduction of influent load) 99% 97% 99% 69% 98% None 3.2 Treatment Capacity Report Hydraulic Capacity Design / As Constructed (m3/day) 4,140 Hydraulic Capacity Current loading (m3/day) 1,423 Hydraulic Capacity Remaining (m3/day) 2,717 Organic Capacity - Design / As Constructed (PE) 6,000 Organic Capacity - Current loading (PE) 5,468 Organic Capacity Remaining (PE) 532 Will the capacity be exceeded in the next three years? (Yes / No) No Page 7 of 36

8 3.3 Extent of agglomeration Summary Report % of Total Load Generated in the Agglomeration Load generated in the agglomeration that is collected in the sewer network 97.5 Load collected in the agglomerations that enters treatment plant 80 Load generated in the agglomeration going to individual and appropriate treatment systems 0 Load generated in the agglomeration that is not collected and not individually treated Complaints Summary Number Date & Time Nature of Complaint N/A this period Cause of Complaint Actions taken to resolve issue Closed (Y/N) 3.5 Reported Incidents Summary Date & Time 27/12/201 3@05.00 to 28/12/201 3@11.30 Incident Description Power Failure Cause Fuse Blew in ESB transformer No. of Incidents 1 Corrective Action Fuse replaced by ESB Authorities Contacted Note 1 Reported to EPA (Yes/No) Closed (Y/N) Yes Yes Y Number of Incidents in Number of Incidents reported to the EPA in Explanation of any discrepancies between the two numbers above N/A Page 8 of 36

9 3.6 Sludge/Other Inputs to the WWTP Input type m3/year PE/year % of load Domestic /Septic Tank Sludge Not Available <1% Industrial / Commercial Sludge 45 Not Available <1% Landfill Leachate (delivered by tanker) Landfill Leachate (delivered by sewer network) Other (specify) Page 9 of 36

10 Section 4 Infrastructural Assessments and Programme of Improvements 4.1 Storm Water Overflow Identification and Inspection report SWO Identification and Inspection Summary Report Table A WWDL Name / Code for Storm Water Overflow Irish Grid Reference Included in Schedul e A4 of the WWDL Compliance with DoEHLG Criteria No. of times activated in 2013 (No. of events) Total volume discharged in 2013 (m3) Total volume discharged in 2013 (P.E.) Estimated /Measured Data Church Street E N Yes Not yet assessed Unknown Unknown Unknown N\A Cahereen West 99599E N Yes Not yet assessed Unknown Unknown Unknown N\A Pound Road 99526E N Yes Not yet assessed Unknown Unknown Unknown N\A SWO Identification and Inspection Summary Report Table B How much sewage was discharged via SWOs in the agglomeration in the year (m3/yr)? 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 2013? Unknown Is each SWO identified as non-compliant with DoEHLG Guidance included in the Programme of Improvements? Yes The SWO assessment includes the requirements of Schedule A3 & C3 N\A Have the EPA been advised of any additional SWOs / changes to Schedule C3 and A4 under Condition 1.7? No Page 10 of 36

11 4.2 Report on progress made and proposals being developed to meet the improvement programme requirements. Specified Improvement Programme (Schedule A and C Summary Report Specified Improvement Programmes (under Schedule A and C of WWDL) Phosphorus Removal facility upgrade Upgrading of storm-water overflows Licence Schedule (A or C) C.1 C.3 Licence Completion Date 1 st January st January 2020 Date Expired? (N/NA/Y) N Status of Works ((i) Not Started; (ii) At planning stage; (iii) Work ongoing on-site; (iv) Commissioning Phase; (v) Completed; (vi) Delayed;) (iii) Work ongoing on-site % Construction Work Completed N ((i) Not Started 0% Licensee Timeframe for Completing the Work 40% Q st January 2020 Comments Subject to IW funding Subject to IW funding Improvement Programme Summary Table Improvement Identifier Improvement Description Improvement Source Progress (% Completed) Expected Completion Date N/A Phosphorus removal facility upgrade Collecting 10 unsewered properties at Church street Extension of collection network to serve high density ribbon development to the East of the current agglomeration boundary. N/A WWTP assessment (Condition 5.2). 40% Q Sewer Integrity Tool (Condition 5.2). 100% % 0% SWO assessment (Condition 4 &5.2). 0% Drinking Water Abstraction Risk Assessment (Condition 4) Subject to IW funding Subject to IW funding 1 st January 2020 N/A N/A Shellfish Impact Risk Assessment (Condition 5) N/A N/A N/A N/A Page 11 of 36

12 N/A N/A Pearl Mussel Impact Assessment (Condition 4) N/A N/A N/A N/A Improved Operational Control N/A N/A N/A N/A Incident Reduction N/A N/A N/A N/A Elimination/Reduction of Priority Substances N/A N/A Sewer Integrity Risk Assessment Tool Improvement Programme (Works) Summary Table: The Improvement Programme should include an assessment of the integrity of the existing wastewater works for the following: Risk Assessment Rating (High, Medium, Low) Risk Assessment Score Reference to relevant section of AER (e.g. Appendix 2 Section4. Hydraulic Risk Assessment Score High 140 Appendix 7.4 Environmental Risk Assessment Score High 480 Appendix 7.4 Structural Risk Assessment Score High 150 Appendix 7.4 Operation & Maintenance Risk Assessment Score Low 16 Appendix 7.4 Overall Risk Score for the agglomeration High 786 Appendix 7.4 Page 12 of 36

13 Section 5 Licence Specific Reports Licence Specific Report Required in 2013 AER Included in 2013 AER Location in 2013 AER Priority Substances Assessment Yes Yes 5.1, Appendix 7.5 Drinking Water Abstraction Point Risk N/A No N/A Assessment Habitats Impact Assessment N/A No N/A Shellfish Impact Assessment N/A No N/A Toxicity / Leachate Management N/A No N/A 5.1 Priority Substances Assessment Kerry County Council did not carry out a Desk Top Study Method or Screening Analysis in 2013; however a priority substance analysis was carried out on the treated effluent from Castleisland WWTP in All of the substances tested were well below the maximum allowable values. This would indicate that priority substances are not impacting on the receiving waters. The results of the analysis are contained in the Appendix 7.5. There has been no change to the quality of influent entering the plant from 2012 to There is only one licensed trade discharge in the Castleisland agglomeration, Castleisland Livestock Mart. The discharge from this establishment should not impact on the priority substance levels in the effluent from the WWTP. Priority Substance Assessment summary table: 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 Does the assessment include a review of Trade inputs to the works? Does the assessment include a review of other inputs to the works? 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) Does the assessment identify that priority substances may be impacting the receiving water? Does the Improvement Programme for the agglomeration include the elimination / reduction of all priority substances identified as having an impact on receiving water quality? Licensee self- assessment checks to determine whether all relevant information is included in the Assessment. Screening Analysis(2012) Yes Yes No No No Page 13 of 36

14 5.2 Drinking Water Abstraction Point Risk Assessment. Drinking Water Abstraction Point Risk Assessment summary table: Licensee self- assessment checks to determine whether all relevant information is included in the Assessment. Is a Drinking Water Abstraction Risk Assessment required in the No 2013 AER (or outstanding from a previous AER) 5.3 Shellfish Impact Assessment Report. Shellfish Impact Assessment summary table: Is a Shellfish Impact assessment required in the 2013 AER (or outstanding from a previous AER)? No 5.4 Toxicity / Leachate Management Not Required - Leachate is not accepted by the Treatment Plant Toxicity / Leachate Management Report summary table: Is a Toxicity / Leachate Management Report required in the 2013 AER (or outstanding from previous AER) No 5.5 Toxicity of the Final Effluent Report Toxicity of the final effluent assessment summary table: Is a Toxicity report required? (Condition 4) No 5.6 Pearl Mussel Measures Report Pearl Mussel Measure Report summary table (check licence condition to see which format is appropriate): Is a progress report on implementation of the findings of Pearl Mussel Protection Measures report required in the 2013 AER (or outstanding from previous AER) No 5.7 Habitats Impact Assessment Report Habitats Impact Assessment summary table: Is a Habitats Assessment required in the 2013 AER (includes outstanding assessments from previous years)? No Page 14 of 36

15 Section 6 Certification and Sign Off Does the AER include an executive summary Yes Does the AER provide an assessment of the performance of the WWTP Yes Is there a need to advise the EPA for consideration of a technical amendment/review of the licence No Is there a need to request/advise the EPA of any modifications to the existing WWDL No Are all outstanding reports and assessments from previous AER s included as an appendix to this AER N/A List of outstanding reports Shellfish impact assessment report 2014 I certify that the information provided in this AER is accurate and representative. Oliver Ring Director of Services Page 15 of 36

16 Section 7 Appendix 7.1 D (Influent Monitoring) AER 2013 Lab results Influent mg/l Date Ph BOD COD S.S Total N Ammonia Orthophosphate as N as N as P 16/01/ /02/ Tralee lab 11/03/ Tralee lab 17/04/ /05/ Tralee Lab 05/06/ /07/ /08/ Tralee lab 26/09/ /10/ /11/ Tralee lab 08/12/ average AER 2013 Lab Results Effluent mg/l Date Ph BOD COD S.S Total N Ammonia Orthophosphate as N as N as P 16/01/ /02/ Tralee lab 11/03/ Tralee lab 17/04/ /05/ /06/ /07/ /08/ Tralee lab 26/09/ /10/ /11/ Tralee lab 08/12/ average Page 16 of 36

17 Appendix 7.2: D (Effluent Monitoring) Parameter: Flow (m³) Reporting Period: January April 2013 Monitoring Frequency: Daily Primary Discharge Point Code: SW Day January February March April º º most of flow diverted to storm tank during installation of new sludge return pumps Page 17 of 36

18 Appendix 7.2: DO (Effluent Monitoring) Parameter: Flow (m³) Reporting Period: May August 2013 Monitoring Frequency: Daily Primary discharge point code: SW Date May June July August Page 18 of 36

19 Appendix 7.2: DO (Effluent Monitoring) Parameter: Flow (m³) Reporting Period: September December 2013 Monitoring Frequency: Daily Primary Discharge Point Code: SW Day September October November December plant downº ºplant down due to power failure caused by winter storms Page 19 of 36

20 Appendix 7.3 PRTR Page 20 of 36

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27 Appendix 7.4 SEWER TOOL Page 27 of 36

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35 Appendix 7.5 Priority Substances Project Project Reference Location Location Reference Castleisland TP1300D0180 Effluent TPEFF1300D0180SW001 Sample Reference 2012/1384 Sample Date 14-Mar-12 Sample Time 16:10 Sample Method 24 hr composite Sampled By David Lenihan Reason Compliance Parameter Max. Target Min. Comments priority substance monitoring Ammonium NH mg/l 0.44 BOD (5day) O mg/l < 2.8 Chemical Oxygen Demand O mg/l oc Physchem µs/cm 501 Suspended Solids Physchem mg/l 5 ph Physchem ph units 7 Temperature Physchem Degrees C 12.6 Dissolved Oxygen O mg/l 3.5 Ammonium (as N) N mg/l 0.34 Total Oxidised Nitrogen(TON) N mg/l Total Nitrogen(as N) N mg/l Simazine Pest triazine ug/l < 0.07 Sulphate SO mg/l 26.8 Dichloromethane VOC ug/l < 3 Atrazine pest triazine ug/l < 0.07 TriButylTin TBT ug/l < Arsenic As ug/l 0.69 Chromium Cr ug/l 0.6 Copper Cu mg/l < Toluene VOC ug/l < 1 Lead Pb ug/l < 0.5 Nickel Ni ug/l < 1 Zinc Zn ug/l 23 Flouride F mg/l 0.2 Cadmium Cd ug/l < 0.5 Selenium Se ug/l < 0.5 Boron B mg/l Mercury Hg ug/l < 0.02 barium Ba ug/l 77 Benzene VOC ug/l < 1 Dibromochloromethane THM ug/l < 1 Chloroform THM ug/l Dichloroethane C2H4Cl ug/l < 1 Benzo(a)pyrene PAH ug/l < Benzo(b)Flouroanthene PAH ug/l < Benzo(k)Flouranthene PAH Varies ug/l < Page 35 of 36

36 Fluroanthene (PAH) PAH ug/l < indeno(1,2,3-cd)pyrene PAH ug/l < benzo(ghi)perylene PAH ug/l < Tetrachloroethene VOC ug/l < 1 Trichloroethene VOC ug/l < 1 Trichlorobenzenes VOC ug/l < 1 Vanadium V ug/l < 8 2,4 D acid herb ug/l < 0.03 Bromoform THM ug/l < 1 Bromodichloromethane THM ug/l < 1 Antinomy Sb ug/l < 0.5 Calcium Ca mg/l 55.1 Dissolved Oxygen (as %Sat) Physchem % O Cyanide Cn ug/l < 50 Magnesium Mg mg/l 3.87 Potassium K mg/l Sodium Na mg/l 44.4 Manganese Mn ug/l 23 Iron Fe ug/l Ethyl Benzene VOC ug/l < 1 cobalt metal ug/l < 1 m&p Xylenes xylene ug/l < 1 Total Oxidised Nitrogen (as N) N mg/l 16.9 MCPA acid herb ug/l < 0.05 Mecoprop(total) acid herb ug/l < 0.04 molybdenum Mo metals ug/l < 9 MTBE VOC ug/l < 1 Phenol Phenols ug/l < 1 tin Sn metals ug/l < 3 Triclopyr acid herb ug/l < 0.03 Vinyl Chloride VOC ug/l < 1 Acenapthylene SVOC ug/l < Aldrin pest ug/l < 0.01 Dieldrin Pest ug/l < 0.01 Endrin pest ug/l < 0.01 Chloromethane VOC ug/l < 1 Bis(2-ethylhexyl)pthalate DEHP ug/l < 3 BenzylbutylPthalate BBP ug/l < 1 Diuron Pest ug/l < 0.03 Linuron Pest ug/l < 0.08 Isodrin Pest ug/l < 0.01 Isoproturon Pest ug/l < 0.04 Napthalene SVOC ug/l < 0.1 Polychlorobiphenyls (as Alachlors) PCB ug/l Pentachlorophenol Phenol ug/l < 1 Carbon Tetrachloride CCL ug/l < 1 Terbutryn pest ug/l < 0.04 Anthracene PAH Varies ug/l < Gamma-HCH (Lindane) OC pest ug/l < 0.01 Glyphosate pest ug/l < 12 < 1 Page 36 of 36