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HomeMy WebLinkAbout2642 - Site Assessment ReportTraynor Fmirs nmr_ntal 1 nl. PETER HUGHES CORNACARROW I - o MONAGHAN Z W a � CO MONAGH.AN O w 11J 1tiNGDEPARTMENfl NION. CO• CO. Q 2 REF. NO. PLANNIGSECTIOI /42 i6MAY 2026 WNW` w MONAGHAN CO. COUNCIL oEG. NO a W L� u Q ~ J 0N IN ACCORDANCE WITH W EPA CODE OF PRACTICE WASTEWATER TREATMENT AND DISPOSAL SYSTEMS SERVING SINGLE HOUSES 2021 Traynor Environmental Ltd Belturbet Business Park, Creeny, Belturbet Traynor Co. Cavan nk EnmrntalllJ.� Tel: +353 49 9522236 Fax: +353 49 9522808 Web: www.traynorenvironmental.com 0T211Traynor rmnl IiJ, SITE CHARACTERISATION FORM FOR AN ON -SITE WASTEWATER TREATMENT SYSTEM CONTENTS 1.0 GENERAL DETAILS 2.0 GENERAL DETAILS 3.0 ON SITE ASSESSMENT 3.1 VISUAL ASSESSMENT 3.2 TRIAL HOLE ASSESSMENT 3.3a Subsurface Percolation Test for Subsoil Step 1 Test Hole Preparation Step 2 Pre -Soaking Test Holes Step 3 Measuring Two Step 4 Standard Method (where Tioo5 210min) Step 5 Modified Method (where T100 > 210min) 3.3bSurface Percolation for Soil Step 1 Test Hole Preparation Step 2 Pre -Soaking Test Holes Step 3 Measuring Two Step 4 Standard Method (where Tioo5210min) Step 5 Modified Method (where T100> 210min) 4.0 CONCLUSIONS OF SITE CHARACTERISATION 5.0 RECOMMENDATION 6.0 TREATMENT SYSTEM DESIGN DETAILS 7.0 SITE ASSESSORS DETAILS 8.0 PHOTOGRAPHS OF THE SITE 9.0 EPA/FAS CERTIFICATE 10.0 INSURANCE DETAILS. 2 1.0 GENERAL DETAILS (From planning application) Name(S) I Peter Hughes Address of Correspondance Site Location and Townland Cornacarrow Design Solutions Monaghan Co. Monaghan Number of Bedrooms 4 Maximum Number of Residents: 6 Comments on population equivalent 6PE is the maximum capacity of the dwelling Proposed Water Supply: Mains: Private Well/Borehole YJ Group Well/Borehole 2.0 GENERAL DETAILS (From planning application) Soil Type, (Specify Type): Soil Association 29 Acid Brown Earths (75%), lnterdrumlin Peat and Peaty Gleys (25%) Subsoil, (Specify Type): I Bedrock at surface Bedrock Type: I SMV — Silurian Metasediments and Volcanics Aquifer Category: Regionally Important Locally Important n Poor I I Vulnerability: Extreme High Moderate Low LIII Groundwater Body: IE_NW_G_061 Status Not at Risk Name of Public/Group Scheme Water Supply within 1km: Unknown Source Protection ZOC n/a SI SO n/a Groundwater Protection R21 Area: ❑ [r�q Response: Presence of Significant sites (Archaeological, natural and historical): None evident within the locality Past experience in the area: Variable percolation characteristics of the topsoil and subsoil materials. R21 Acceptable subject to normal good practice. Where domestic water supplies are located Nearby, particular attention should be given to the depth of subsoil over bedrock such that the minimum depths required in Chapter 6 are met and the likelihood of microbial pollution is minimised. Site may be suitable for discharge to ground, if the minimum depths are met on the site and if there exists suitable percolation. As the soil type in the area is Acid Brown Earths (75% of the land area), and as the area is mapped as 'Extreme' Vulnerability. Groundwater as a resource will be at risk if the minimum depths required are not achieved on the site, or if the percolation rate is too rapid. Older wells in the area may also be at risk, if the minimum separation distances are not adhered to. Groundwater and wells are therefore the main targets, following the desk study. Given the response and the aquifer type, the site is potentially suitable for a conventional septic tank system if the minimum depths required are met on the site, if the minimum separation distances can be met, and if the percolation rate is adequate. 'This figure of 6 people refers to the potential 6 people maximum that will stay at the proposed dwelling at any one time. rraynar 3.0 ON -SITE ASSESSMENT 3.1 Visual Assessment Landscape Position Slope Steep <1:5 Slope Comment Surface features within a minimurr Houses Existing Land Uses Vegetation Indicators Relatively Flat Shallow 1.5 to 1.20 1 ✓ I Relatively Flat in west direction of 250 metres (Distances to features should be noted in metres) Neighbouring houses located >65m northwest and >65m southwest from the proposed percolation area (ppa). Agricultural Grassland Gross is the predominant vegetation throughout the site. Groundwater Flow Directions West Direction Ground Condition Site Boundaries Roads Outcrops (Bedrock and/or subsoil) Surface water ponding Lakes Beaches/Shellfish Areas Wetlands Karst Features Watercourses/Streams Drainage Ditches Springs Ground conditions are best described as dry and firm throught-out the site in the ppa. Hedge located to the West from the ppa. Local road located >35m northwest from the ppa. Some outcropping rock evident within the locality. No surface water ponding evident in the ppa when examined on 13.05.26. It must be noted that weather conditions prior to the site assessment taking place was generally mild. None occur within 50m of the ppa. None occur within 200m of the ppa. None occur within 200m of the ppa. None occur within 200m of the ppa. None occur within 10m of the ppa. None occur within 10m of the ppa. If a well is to be bored onsite it should be located at least 30m up -gradient from the ppa; this will therefore be outside the minimum separation distances of the Groundwater Protection Responses of GSI/EPA/DoELG and the EPA Code of Practice (2021). As all the wells in the locality will therefore meet the required separation distances of the Groundwater Protection Responses of GSI/EPA/DoELG and the EPA Code of Practice (2021), none are deemed to be at risk from the proposed polishing filter's installation. As all the wells in the locality will therefore meet the required separation distances of the Groundwater Protection Responses of GSI/EPA/DoELG and the EPA Code of Practice (2021), none are deemed to be at risk from the proposed polishing filter's installation. Integrate the information above in order to comment on: 1. The potential suitability of the site: The site still seems suitable for discharge to ground. 2. Potential targets at risk: Following the desk study surface water was thought not to be at risk; this was corroborated during the visual assessment. There appears to be few issues with respect to impermeability. From this, surface water does not seem to be a potential target, Groundwater is still a target following the visual assessment, unless the minimum depths required are met on the site and there exists adequate percolation. 3. The suitability of the site to treat the wastewater: Following the visual assessment it is seen that all appropriate separation distances can be met and the site seems well drained, and pending confirmation of the presence of adequate depths of unsaturated soil and subsoil within the percolation area, as well as sufficient percolation rates under the site, the site should be suitable for treating wastewater adequately. Sketch of site showing measurement to Trial Hole location and Percolation test Hole locations, wells and direction of ground water flow, proposed house (incl. distances from boundaries) adjacent houses, watercourses, significant sites and other features. North point should always be included. SITE LAYOUT DRAWING SHOWING TEST HOLE LOCATIONS Approximate Location of Trial Hole & Percolation Test Holes Examined on 13.05.2026 Traynor r�,,, "� 6 3.2 Trial Hole Should be a minimum 2.10m deep Depth of Trial Hole 0.70m BGL Depth from Ground Surface to I0. 70m BGL Depth from Ground Surface to I None bedrock (m) if Present Water Table (m) if Present Encountered None I None I Depth of water ingress Encountered Rock Type if Present Encountered Date and Time of Date and Time of 13.05.2026 12.00 11.05.2026 10.00 Excavation Examination Depth of Subsurface & Surface Soil/Subsoil Texture Classification Plasticity and Dilatancy Soil Structure Density Compactness Colour Preferential Flowpaths 0.1m Depth of Surface Test Silt/Clay Ribbons 30.30.40 2,2,2Threads Crumb Low Brown Silt/Clay 0.2m 0.3m 0.4m Clay intermixed With stone ---_ Bedrock Ribbons 60.70.80 2,3,3Threads Bedrock Crumb --- Bedrock Medium _----_— Bedrock Brown Bedrock --- Bedrock 0.5m Depth of Subsurface Test 0.6m 7 0.7m 0.8m 0.9m 1.0m 1.1m 1.2m 1.3m 1.4m 1.5m 1.6m 1.7m 1.8m 1.9m 2.Om 2.1m 2.2m EVALUATION: Weather conditions: Mild According To The Flowchart For Describing Subsoil's based on B55930:1999, the subsoil is best described as Clay intermixed with stone Groundwater was not encountered in the trial hole. Winter groundwater was not encountered in the trial hole. Bedrock was encountered in the trial hole at a depth of 0. 70m. Likely Subsurface Percolation <90.00 *Note: Depth of percolation test holes should be indicated Value: min/25mm on log above (Enter Subsurface & Surface Depths as Likely Surface Percolation <90.00 appropriate) Value: min/25mm * See Appendix E for BS5930 Classification ** 3 samples to be tested *** All signs of mottling should be recorded. 3.3a Subsurface Percolation Test for Subsoil Step 1 Test Hole Preparation Percolation Test Hole 1 2 3 Depth from ground surface 150 150 150 to top of hole (mm) (A): 550 550 550 Depth from ground surface to base of hole (mm) (B): Depth of hole (mm) (B -A): 400 400 400 Dimensions of hole [length 300 x 300 300x300 300 300 x 300 x breadth (mm)]: Step 2 Pre -Soaking Test Holes Pre-soak Date start Time 2nd pre-soak Date start Time 12.05.2026 07.30 12.05.2026 13.15 12.05.2026 12.05.2026 07.31 07.33 12.05.2026 12.05.2026 13.16 13.18 Each hole should be pre-soaked twice before the test is carried out. Each hole should be empty before refilling. Step 3 Measuring Tioo Percolation Test Hole 1 2 3 Date of Test 13.05.2026 I I 13.05.2026 I I 13.05.2026 Time Filled to 400mm 12.00 12.01 12.03 Time Water Level at 14.32 14.37 14.41 300mm Time to drop 100mm (Tioo) 152.00 156.00 158.00 Average Tioo 155.30 If Tioo>480mins then Subsurface Percolation value >120 —site unsuitable for discharge to ground If Tioo ≤ 210mins then go to Step 4 If Tioo≥ 210mins then go to Step 5 Step 4 Standard Method (where Tioo ≤ 210min) Percolation 1 Test Hole Start Finish at Fill No. Time at Time at 300mm 200mm (min) 2 Start I Finish Iat Time at Time at 300mm 200mm (min) 3 Start Finish Time at Time at At (min) 300mm 200mm 1 14.33 17.09 156.00 14.38 17.19 161.00 14.42 17.25 163.00 2 17.10 19.52 162.00 17.20 20.08 168.00 17.26 20.17 171.00 3 19.53 22.43 170.00 20.09 23.06 177.00 20.18 23.19 181.00 Average At 162.60 168.60 171.60 Average Mt/4 = Average At/4 = Average At/4 = 40.66 42.16 42.91 [Hole No. 1] [Hole No. 2] [Hole No. 2] Result of Test: Subsurface 41.91 min/25mm Percolation Value: Comments Result of Test: Surface Percolation Value = 41.91min/25mm Average Percolation Characteristics of the Surface Material. Wh, rl t 11,11„ 3.3bSurface Percolation for Soil Step 1 Test Hole Preparation Percolation Test Hole 1 2 3 Depth from ground surface I 0 0 to top of hole (mm) (A): 0 Depth from ground surface 400 400 400 to base of hole (mm) (B): Depth of hole (mm) (B -A): 400 400 400 Dimensions of hole [length x 300300 300x300 300x300 breadth (mm)]: Step 2 Pre -Soaking Test Holes Pre-soak Date 12.05.2026 12.05.2026 12.05.2026 start Time 07.35 07.36 07.37 2nd pre-soak Date 12.05.2026 12.05.2026 12.05.2026 start Time 13.19 13.20 13.22 Each hole should be pre-soaked twice before the test is carried out. Each hole should be empty before refilling. Step 3 Measuring Tioo Percolation Test Hole I I 1 2 3 Date of Test 13.05.2026 13.05.2026 13.05.2026 Time Filled to 400mm 12.04 12.05 12.06 14.23 14.19 14.16 Time Water Level at 300mm Time to drop 100mm 132.00 I I 134.00 I I 137.00 Average Tioo 134.30 If Tioo>480 minutes then Surface Percolation value >90 — site unsuitable for discharge to ground If Tioo ≤ 210mins then go to Step 4 If Tioo≥ 210mins then go to Step 5 Iiiiii 10 Step 4 Standard Method (where Tioo ≤ 210min) Percolation 1 Test Hole Start Finish at Fill No. Time at Time at 300mm 200mm (min) 2 Start Finish Iat Time at Time at 300mm 200mm (min) 3 Start Finish Time at Time at At (min) 300mm 200mm 14.17 16.32 135.00 14.20 16.38 138.00 14.24 16.45 141.00 2 16.33 18.52 139.00 16.39 19.02 143.00 16.46 19.13 147.00 18.53 21.19 146.00 19.03 21.33 150.00 19.14 21.50 156.00 Average £t 140.00 143.60 148.00 Average At/4 = Average Mt/4 = Average At/4 = 35.00 35.91 37.00 [Hole No. 1] [Hole No. 2] [Hole No. 2] Result of Test : Surface Percolation 35.97 min/25mm Value Comments Result of Test: Surface Percolation Value = 35.97min/25mm Average Percolation Characteristics of the Surface Material. Tra��nor r�, . = 11 4.0 CONCLUSIONS of SITE CHARACTERISATION: Integrate the information from the desk study and on -site assessment (i.e. visual assessment, trial hole and percolation tests) above and conclude the type of system(s) that is (are) appropriate. This information is also used to choose the optimum final disposal route of the treated wastewater. Slope of Proposed Infiltration/treatment area Are all minimum separation distance met? Depth of unsaturated soil and/or subsoil beneath invert of gravel (or drip tubing in the case of drip dispersal system) Percolation test results: Surface Not suitable for Development Identify all suitable options 35.97min/25mm 1. Septic tank System (Septic tank and percolation area) (Chapter 7) 2. Secondary Treatment System (Chapters 8 and 9) and soil polishing filter (Section 10.1) 3. Tertiary Treatment System and Infiltration/treatment area (Section 10.2) Sub -surface Suitable for Development 1.200 Yes 0.90m 41.91min/25mm Discharge Route Groundwater 5.0 RECOMMENDATION: Traynor Environmental recommends an O' Reilly Oakstown EN Treatment system or Propose to install similar EN Certified System, Ecoflo Coco Filter and Gravel Distribution Bed is constructed in accordance with EPA guidelines 2021. And discharge to Groundwater Invert level of the trench/bed I 0.30m Above Ground Level (AGL) gravel or drip tubing (m) I Site Specific Conditions (if any) e.g. special works, Site Improvement Works, Testing etc. The tests showed that the site has a Sub -surface value rating of 41.91min/25mm indicating adequate percolation characteristics of the Sub -surface. A surface value rating 35.97min/25mm was attained indicating adequate percolation characteristics of the surface. Groundwater was not encountered in the trial hole. Winter groundwater was not encountered in the trial hole. Bedrock was encountered in the trial hole at a depth of 0. 70m. A Ecoflo Co Co Filter should be constructed to ensure that there is a minimum of 0.90m of suitable percolating material between the base of the lowest part of the Gravel Distribution Bed and Groundwater at all times. The Ecoflo Co Co Filter will be bedded on 300mm depth of crushed stone (20-30mm in sizes). Traynor Environmental Ltd also recommends that the O'Reilly Oakstown Treatment System or similar manufactured EN certified system, Ecoflo Coco Filter & Gravel Distribution Bed. construction is overseen by a suitable qualified and accredited person. 'I raynor r�a.�'L!i, 12 6.0 TREATMENT SYSTEM DETAILS SYSTEM TYPE: Septic Tank System (Chapter 7) Tank Capacity (m2) N/A Percolation Area Mound Percolation Area No. of Trenches N/A No. of Trenches N/A Length of Trenches (m) N/A Length of Trenches (m) N/A Invert Level (m) N/A Invert Level (m) N/A SYSTEM TYPE: Secondary Treatment System (Chapters 8 and 9) and polishing filter (Section 10.1) Secondary Treatment Systems receiving septic tank effluent (Chapter 8) Package Treatment Systems Media Type Area (m2) Deep of Filter Invert Level receiving raw wastewater (m) (m) (Chapter 9) Sand/Soil N/A N/A N/A Type O' Reilly Oakstown Treatment System Soil N/A N/A N/A Capacity PE 8 Constructed N/A I I N/A N/A I Sizing of Primary Compartment Wetland Other N/A N/A N/A 4 m Polishing Filter: (Section 10.1) Surface Area Sand Filter (m2) Ecoflo No. of Trenches N/A Coco Filter Option 1— Direct Discharge Surface area (m2) 90 Length of Trenches (m) N/A Option 2 — Pumped Discharge Surface Area (m2) I N/A Invert Level (m) I 0.30m AGL SYSTEM TYPE: O'Reilly Oakstown Treatment System and infiltration/ treatment area (section 10.2) Provide performance information Provide design information Identify purpose of tertiary treatment demonstrating system will provide required treatment levels DISCHARGE ROUTE: Groundwater Surface Water QUALITY ASSURANCE: O'Reilly Oakstown Treatment System, Ecoflo Coco Filter & Gravel Distribution Bed Hydraulic Loading Rate (I/m2. d) 900 Discharge Rate (m3/hr) 0.011 Installation & Commissioning Recommend to be overseen by plant supplier. ) Traynor 13 Surface Area (m2) On -going Maintenance Maintain and de -sludge annually 7.0 SITE ASSESSOR DETAILS Company: Traynor Environmental Ltd Prefix: Mr. First Name: Nevin Surname: Traynor Address: Qualifications/Experience: Belturbet Business Park, Creeny, Belturbet, Co. Cavan. BSc. Env, H.Dip 1. T, Cert SHWW, EPA/FAS Course Certified Professional Indemnity Insurance Holder (Cl million cover) Date of Report: 26.05.2 026 Phone: 049 9522236 Fax: 049 9522808 E-mail: nevin@traynorenvironmental.com Indemnity Insurance Number: 24/1/03161 (Renewed 12`" July 2025) Signed: Nevin Traynor BSc. Env, H. Dip 1.T, Cert SHWW, EPA/FAS Cert. For Traynor Environmental Ltd Traynor r�,�hi, 14 Figure — Ecoflo Co co Filter Detail p 100 WTraynor es„-rnj 15 Photograph — Example of Ecoflo Co co Filter Under Construction • • fro nor � �,J., 16 8.0 SITE PHOTOGRAPHS Facing North From the Facing South From the Proposed Percolation Area Proposed Percolation Area �.. � _ �' .may _ •� ,L t. Facing East From the Proposed Percolation Area Trial Hole — Front View 1 Tra�rnor rnrironArmal l 1 17 Facing West From the Proposed Percolation Area f � + I { Trial Hole —Side View J -' Percolation ("T") Test 1 Percolation ("T") Test 2 /� X13`1•, ,fit i4-•.s.�� 4rll I�r �3�r�/ yrt� ��`/'+� i- 1 'f...;T_" �' lr ��� t�� Y( 4 ,r + < ,•a,� .� i+'�.f""�. Percolation ("T") Test 3 Percolation ("P") Test 1 4` �t 4� 1� `1 1T� ! l ; a¢1 rRtrlg��1+U II11iti/J`i�%f may? cy tJ dr ,'A sf y • ![Cj��''Sfi5"/1Pj�� t r •'��,rte'L? a � jJ,rtf a Percolation ("P") Test 2 Percolation ("P") Test 3 r 2ia �bV' _ter•. � ''!E':` A-�E�r:P "' Traynor futw m l l,J., 18 Maps Used As Part of the EPA Site Suitability Assessment Groundwater/Aquifer Map From the GS/ Groundwater Aquifer Map Site is classified as PI — Poor Aquifer - Bedrock which is Generally Unproductive except for Local Zones Vulnerability Map From the GSI Vulnerability ♦ , Map Site is classified as Rock at or near Surface or Karst 1 ra)'nnr „,:,m 19 Bedrock Map From the GSI Bedrock Map Site is classified SMV — Silurian Metasediments and Volcanics Teagasc Subsoil Map From the Teagasc Subsoil Map Site is classified as Bedrock at surface 1 ra}nor 20 w LL 0 ai N 10.0 P.1 INSURANCE BAruay Europe DAC Griffiths 15Griffiths 15 r -urge's Quay +353 (D)1 £✓.2 d7d2 & Colo' -n 2 irltog�grifhdtsandaaur.com Arm o u r 0D2grif-rlthsandannour.cam An Ann Company PROFESSIONAL INDEMNITY INSURANCE We confirm the following details relating to our client's Professional Indemnity Insurance: Insured: Traynor Environmental Ltd Address: Belturtyet Business Park Creeny Belturbet Co. Cavan H14AY94 Lead Insurer(s): Arch Insurance (EU) dac and a panel of co-insurers Period of Insurance: 12 July 2025 to 11 July 2026 Policy Number: 24/1/03161 Limit of Indemnity: €1,500,000 any one claim and unlimited in the period of insurance Signed: Graeme Tinney Chief Executive Officer Griffiths & Armour Europe DAC Date: 27 June 2025 The policy is subject to the insuring agreements, exceptions, exclusions, limitations, conditions and declarations contained therein_ The above is accurate at the date of signature. No obligation is imposed herein on the signatory to advise of any alteration. Clre(h3rs: G Tr. -,=y C Evans IUK) Di 'Nlaey ;UK) T Cosgro c tn, Execlitvey Regt5tered In treisrd No-. E32269 Regirt ed c e: F163r 3 P3rx ou-rl CDJI Cnnlg Rsad Cxntltord EU511exs Pam Dunn lt Dtt Ri, 7 Irel3'Q GrIl'l ru EArmour EUlope DeskJr ted Acidity Corn3ry, tradhg 3s GmolltRs S Almnllrrs regUaed by the Cerhat e3,Y. Cr IrE;Ulrt VAT No. E55Gr33D An Acs Cr'a'y Traynor Fnr7mmm�ual lyd. � 22 PROPOSAL FOR n O'REILLY OAKSTOWN TREATMENT SYSTEM PREPARED FOR PETER HUGHES CORNACARROW MONAGHAN CO. MONAGHAN Traynor r.,n.,d23 � U J (7 z � N z 5 CW (' z 26 o a D: O J z W W (7 O z w v a W C y O ++ J 0 ® O O O O O O O 0 O O O O O O O m m a O 0 O 0 O 0 o 0 o 0 O 0 O 0 O 0 O 0 O 0 o 0 0 0 o 0 0 0 a = u 'c b0 o c C) 0 o O O o 0 0 0 0 0 o O O O 0 000 O O V w b0 C) 0 m C O 0 0 0 0 O 0 O 0 O 0 0 0 0 = O O u C-i 00000000000000 Q 7 h0.0 a o a o 0 a) 5 J a z u c N E `D =p C=) p m m . m mm m N Li) N N -1 N 'i In N In N Li) N N c -I O G . O O O 0 O O O O O O 0 0 0 0 W J a m c o^ m `. o v o 0 0 0 0 o 0 0 m N m O a m � G in m M O N U') O W m COD O COD m -l-1 O b a J C V u C Z O x 7 j a0 c O N D L L (7 N U 3 .3 to o c u T 7 0 ° 0 Y 3 Y '3 a) D L u in v m a) 42w N •� f0 10 t O E O. u v c '^ N O L Eu U a_ b0 a w w m o n n E v v u `o O a o o m o v 'o 'o O 70 •3 z o O 0 o z z a 1n r W Ln Ln G o a m7 u — Y u UI . O O al N O C 0 L c 7 0L m YO C E 2 Cn CD LL < m 4E O Date: 261h May 2026 Applicant Name: Peter Hughes Site Address: Cornacarrow, Monaghan, Co. Monaghan Design Capacity: Maximum number of residents: 06 No. of single bedrooms: 00 No. of double bedrooms: 04 A representative of O'Reilly Oakstown Ltd has assessed the Soil Test Report and confirms the suitability of their Oakstown BAF 8PE Wastewater Treatment System to treat effluent being discharged from the above proposed dwelling based on the residential demands submitted to us above. 1. Waste Water Treatment System Design Details: - Maximum Daily Design Loadings as per client Max Flow Total BOD5 Total Organic No. of Litres/day/person Hydraulic (grams/day/person) Loading users Load (grams/day) 6 150 900 litres 60 360 Total Organic Loading 0.36kg BOD/day Total Hydraulic loading 0.90m3 /day - Average treated effluent standard - see performance results on EN -12566-3 certification attached BOD 8mg/litre TSS 12m /litre Ammonia 13m /litre - Proposed system details: ► Oakstown BAF 8 P.E. Volume of Total Plant 8m3 Volume of Primary Sedimentation Chambers 4m3 Volume of Secondary Aeration Chamber 2m3 Volume of Biomedia 1.Om3 2. Wastewater Treatment system description: The Oakstown BAF 8 PE is designed to provide proven, cost effective primary and secondary wastewater treatment in robust steel reinforced concrete tanks. The primary sedimentation chamber has substantial capacity (4m3) to allow anaerobic digestion to occur naturally while letting sludge settle on the tank floor. Once primary treatment has taken place the effluent is further degraded in the aeration chamber where oxygen enriched wastewater provides ideal conditions for aerobic bacteria to thrive. Before pumping to the percolation area the clear water is left to further settle in the clarifier chamber to eliminate any remaining settle able solids. 3. Guarantee and warrantees: O'Reilly Oakstown provide a 12 month maintenance service contract on all systems from date of first occupation. We provide a 24 month warranty on all parts. 4. Percolation: The percolation area designed must conform to the requirements of Table 10.1 of EPA Code of Practice 2021 Wastewater Treatment and Disposal System serving single houses. The percolation area requirements are as follows: Sub Surface value: 41.91 min/25mm as per Site Characterisation Form. Surface value: 35.97min/25mm as per Site Characterisation Form. Depth from ground surface to water table: None Encountered Depth from ground surface to winter groundwater level: None Encountered Depth from ground surface to bed rock: 0.70m BGL. ►See Site Characterisation report for percolation area details. 5. Client Responsibilities unless included in our quotation: • Excavation and backfill. • Construction of the percolation / polishing filter as recommended by the site engineer on the Site Characterisation report and/or drawing. • Provision of access for delivery by hi-ab truck to within 3 metres of the excavation. • Provision of a power ducting from the tanks to the house/garage. • Mounting and connection of control panel to mains power in the house/garage. 6. Operation and Maintenance: The client is responsible for the operation and maintenance of the wastewater treatment system in accordance with the owner's manual supplied by O'Reilly Oakstown. Please do not hesitate to contact us if there are any further queries. Yours sincerely, Institute for Wastewater Technology O'Reilly Oakstown Environmental Oakstown, Trim, Co. Meath, Ireland EN 12566-3 Annex A, B, C "Small wastewater treatment systems for up to 50 PT" Small wastewater treatment system Oakstown BAF System submerged aerated fixed film bioreactor Nominal organic daily load Nominal hydraulic daily load Material Watertightness Crushing resistance Treatment efficiency (nominal sequences) Electrical consumption PIA - Prufinstitut fur Abwassertechnik GmbH (PIA GmbH) Hergenrather Weg 30 D-52014 Aachen Certified accordino to ISO 9001:2000 Notified Body number: 1739 - 0.38 kg/d 1.20 m3/d steel reinforced concrete pass pass Efficiency Effluent COD 93.0 % 46 mg/I BODS 97.5 % 8 mg/I NH4-N 61.0% 13 mg/I SS 96.7 % 12 mg/I 2.0 kWh/d .�Pnr 412. tested ACV Flmar I_anr. October 2011 !NSTRUCTIONSJ ______ BAF System When choosing the location to dig, first consult your Site Characterisation Report as submitted to the planning authority. This will show the proposed location of the system and the design of the percolation area in detail. It will also note the presence of rock or a high water table, in which case a rock -breaker or water -pump can be organised in advance. It is important to observe the EPA Separation Guidelines as shown below. ! HHL,, . These show the minimum distance the system and percolation area may be from the house etc. FEATURE MINIMUM SEPARATION (m) Oakstown BAF Sewage treatment System Recommendations Oakstown BAF Sewage treatment System Irrigation Area Dwelling served 7111 1013) Adjacent dwelling 7111 10131 Wall 3)1) 3 Road 4(1) 4 Site boundary 3111 3 Portable water source 10 30- 100121 Watercourse 10 10 © Ensure that there is a solid unimpeded access for the Oakstown truck back to the hole. Clear any build up of clay from around the hole to allow the truck to reverse to within one metre of the hole. L In very wet conditions, it is best to leave the last few bucketfuls to be dug when the truck arrives. If the ground is rocky, it is advisable to dig the hole ahead of time to minimise delays on -site. 0 Ensure there are no power lines or other hazards above the excavation site. © We recommend an inspection chamber (AJ) be fitted just before the BAF Unit. Digging Instructions Generally the Oakstown BAF 2 -Tank System is installed side by side as follows: Sec Diagram 1. Dig a hole 3300mm (11ft) square. This comfortably accommodates both tanks and leaves space to fit the connecting pipes. The depth of the hole for the first tank is 1500mm (5ft) below the inlet pipe. Inspection 915mm Chamber 2400mm 3-0" AJ 8-0„ i secondary 1 E primary ? treatment j o tank tank O �' Mr ....................... ti ....... Two Tank BAF Unit 3300mm as shown from above 11'-0 -- Oakstown, Trim Co. Meath Telephone: 046 - 943 - 1389 Fax: 046 - 943 - 7054 E-mail: info@oreillyoakstown.com Web: www.oreillyoakstown.com INSTRUCTIONS BAF System The second tank sits 150mm (6inch) Qt Inlet lower as shown in iii: E O Two Tank BAF unit as shown side by side 150,, When fitting tanks in tandem, dig a hole 6700mm (22ft) long by 1825mm (6(t) wide. Again dig 1500mm (5ft) below the invert for the first tank and drop 100mm (flinch) for the second tank. a Although it is not essential, a bed of screenings will help to ensure a level surface for each tank. Before fitting the connecting pipe, backfill between and around the tanks with clay. Compact the clay underneath the connecting pipe with the digger bucket and cover the pipes with sand/gravel when fitted, to prevent the pipe sinking under pressure. O Please make sure that the final finished ground level is 75mm (3inch) below the top of the risers to prevent flooding of the electronic controls in exceptionally wet weather. If in doubt, we can hold off on commissioning the system until landscaping is finished and fit extra risers then if required. M Our driver will leave sufficient 7 -Core Cable to reach the house. Our technician will commission the system by installing the air pump, water pump and electronic controls and wiring them at the system. He will leave the "internal panel" for connection by your electrician to the mains with the most senior person on site. If there is nobody on site, it will be left inside the "Green Box" on the system itself. Percolation r. It is important to refer to the relevant Site Characterisation Report for size and design of the percolation area. The following diagram is only a simple outline. From Dwelling 110mm Piping ! Distribution Inspection Chamber 32mm Hydrodare primary Maintenance H. secondary treatment tank ................ 4m minimum E T 25 - 40mm Screening ;' N i. LJL E1 Trench/ N Fall of 1:200 in Percolation Pipe Iii 100mm Percolation Length of pipe dependant on soil type. Percolation bed dependant on water table. Consult O'Reilly Oakstown if in doubt. Sample Percolation Area (NOT TO SCALE) Please call O'Reilly Oakstown when moving in or when the system has been connected. Our technician will carry out a site visit to ensure the system has been wired, switched on and the risers are above the surrounding topsoil. A technician will visit the site to carry out a full service towards the end of the first year. ------------ BAF 8PE WTS :: 11/14 Oakstown, Trim Co. Meath Telephone: 046 - 943 - 1389 Fax: 046 - 943 - 7054 E-mail: info@oreillyoakstown.com Web: www.oreillyoakstown.com W( W o z �l N bb Y V%% N Q N O 0 = � Z N J o (!w 3 0 _J o rc a mz J V In 5 \\� Z w NF o 00 0 I rc 00 awO n W w 0D0L v 0LEL w O •• U x> o r O i i i Z ~ �� ww i QU 5 ;-------------- ; Z cc ' 3 I'EF 1(0 U Lu -1 = 3 < w I 1 Q t • 0L£L • 0LEL O 0] C Ow FNS ------- -------J a QQ WUw -------- -------- fy.! NU•<U in = 09EL • 09ZL z�z \ a v oowT1T —— LI m UO I . .I :I:I :I'.I I'. 1:1:1. : I'. I: 1:1:1:1: I.I 1:1:1:1 = r ------- -----y Z a ~ r------- ----- _y i 1 IL1 dIIII II.I 1 I I I 1 I _ 0 1 II 1.1.1.1.1. 1.1.1 Y 1 E I: 1:1:1:1:1:1:1:1:1:1:1:1:1 P4 1 1 N 1 I I 1 I I L-- 0 N 1 1 I I --- --J ___J L___ L__ J ___J (n :I: 1: 1.1 I:I:I:I:I:I:I:I. I 1 1 I I I O I:I:1 :I: is l: l:l: l: 1:1:1:1 1 i w I t m r_______ l ------ w O :1:1:1:1:1:1:1:1:1:1:1:1'. 1:1:1:1:1:1:1:1:1:1:1:1:1 I 1 1 I 1 l 1 I I a 1 1 r------ 7 1 I 1 I Y I I 1---- ----- w :I: 11111:11 1111 I: I: I: I: I I: I: 1: 1: I: I I ---- I U I ---- 1 I I I I I: (pw IILL 1:1:1:1111111 1:1:11:1:1111 :1:11:1: 1�O1£L 09VL p IL wQ c as �g cc a Z Nx tnV z °� In m 0 Fw zv a Z Um 1 * * F z6 ?f 1 1 0 Z U < z 0 0 F Q a I - a z z O 0 1= F 0 O o Q 0 0 O I, O'REILLY �i-OAKSTOWN- A reliable wastewater treatment system well adapted to all site conditions. Proven performances surpassing the strictest standards. A permanent and ecological solution — no energy needed for the treatment. Pre -assembled, easy -to -handle units to ensure quality installations and less surplus material transported to sites. Minimal final footprint — ideal when the available area for the installation is limited or if separation distances must be reduced. Delivered ready to be installed to minimize civil works and eliminate construction on site. No excavation or relocation at the end of the life cycle of the filtering media (up to 15 years). Complies with the EPA ( E Code of Practice 2009 PROTECT YOUR PROPERTY, YOUR ENVIRONMENT & YOUR INVESTMENT I[iIIuuIiu1 v�000�r� Ecoflo Coco Filter offers all the benefits of a truly proven and reliable tertiary treatment system. Designed for both principal and secondary residences as well as for new housing constructions and faulty system replacement projects. Also recommended for commercial projects. LTHE BEST CHOICE M Send us a copy of your EPA Site Suitability Assessment and we will produce a design for you. If you don't have a copy, send us your planning number and we'll look it up for you on your local authority website. Send us the name of your engineer and we will liaise with them for you. We supply either a full kit of a Wastewater Treatment or only the Ecoflo Coco Filter — Tertiary Treatment Filter along with 15 m of interconnecting pipework and fittings. We will liaise with your grounds contractor to ensure proper installation. We provide a commissioning certificate for the system for full compliance with your planning. 101 ___ 1'1111 •,-000 Vii` Pumping Station Treats domestic wastewater as per local regulations. Ecoflo Coco Filter Provides a final treatment stage to further improve the effluent quality before it is discharged to the receiving environment. Spreads out the influent over the surface of the filtering media thanks to a patented distribution system comprised of a feed ramp, a tipping bucket and distribution plates. Filtering Media The coco fragment -based filtering media is where the water is organically further treated and filtered and where pollutants are retained and degraded. Final Discharge The treated wastewater is discharged directly to a gravel distribution bed installed below it. O'REZLLY Ii—OAKSTOWN—