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HomeMy WebLinkAbout2636 - Site Assessment Report No 2_Traynor £nruonmenraf Lt J. i tS..r'4 s °L( Z uU Q � o w l- Q vhf n w eI W J � 0Qm a J F - 'fly) IJJ I- 1 raynor Lnrironmenml ltd., 07 MAY 2026 N E W TULLYCOORA ORAM CASTLE BLAYN EY REF. NO. 26/ i6 MONAGHAN CO. COUNCIL IN ACCORDANCE WITH EPA CODE OF PRACTICE WASTEWATER TREATMENT AND DISPOSAL SYSTEMS SERVING SINGLE HOUSES 2021 Traynor Environmental Ltd bet Business Park, Creeny, Belturbet Co. Cavan Tel: +353 49 9522236 Fax: +353 49 9522808 Web:. www.travnorenvironmental.com Trn�nor 1 1.0 GENERAL DETAILS (From planning application) Name(S) I Paul Gildernew Address of Correspondance Site Location and Townland Tullycoora Tullycoora Oram Oram Castleblayney Castleblayney Co. 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 Group Well/Borehole 2.0 GENERAL DETAILS (From planning application) Soil Type, (Specify Type): Soil Association 29 Acid Brown Earths (75oa), Interdrumlin Peat & Peaty Gleys (25%) Subsoil, (Specify Type): Sandstone and shale till (Lower Palaeozoic) Bedrock Type: SMV—Silurian Metasediments and Volcanics Aquifer Category: Regionally Important Locally Important 1-1 Poor I I Vulnerability: Extreme ❑ High Moderate ❑ Low ❑ Groundwater Body: IEGBNI_NB_G_o19 Status Not at Risk Name of Public/Group Scheme Water Supply within 1km: Oram Group Water Scheme Source Protection ZOC n/a SI n/a SO n/a Groundwater Protection R1 Area: Response: Presence of Significant sites None evident within the locality (Archaeological, natural and historical): Past experience in the area: Variable percolation characteristics of the topsoil and subsoil materials. R1 = Acceptable subject to normal good practice. Site maybe 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 'High' 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. �Tra)mor 3 3.0 ON -SITE ASSESSMENT 3.1 Visual Assessment Landscape Position Slope Steep <1:5 Slope Comment Surface features within a minimun Houses Existing Land Uses Vegetation Indicators Relatively Flat Shallow 1.5 to 1.20 1 1 Relatively Flat I ✓ in south direction of 250 metres (Distances to features should be noted in metres) Neighbouring house located >150m Northeast from the proposed percolation area (ppa). Agricultural Grassland Grass is the predominant vegetation throughout the site. Groundwater Flow Directions South 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 in the ppa. Ground conditions are best described as wet underfoot at the front of the site until the back of the site where the percolation area and treatment system is to be located. Hedge located to the east from the ppa. Local road located >115m North from the ppa. No outcropping rock evident within the locality. No surface water ponding evident in the ppa when examined on 24.03.26. 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 Traynor rniin+nmrnial !,d.' 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. Fminn�rn,ul l,J., 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 24.03.2026 c )'\\- / ,\ c( /J,.1!1 ( t )] /I ! i ,r ------------- i h � r / 8 Groundwater FIo/1 - Direction . - _ E L -TI TE An interceptor drain should be dug on the higher part of the site to divert surface water away from the percolation area Traynor Fndnmmrnml lid., 6 3.2 Trial Hole Should be a minimum 2.10m deep Depth of Trial Hole Depth from Ground Surface to bedrock (m) if Present 2.10m BGL None Encountered Depth of water ingress 1.10 Date and Time of 22.03.2026 11.30 Excavation Depth from Ground Surface to 2.10 Water Table (m) if Present None Rock Type if Present Encountered Date and Time of 24.03.2026 13.45 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 Depth of Subsurface 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 ------------------------ Winter GWL Ribbons 40.40.50 2,3,3Threads ------- -- Crumb --- Low ------------ Brown -------------- -----® 0.5m 0.6m 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 BS5930:1999, the subsoil is best described as Clay intermixed with stone Groundwater was not encountered in the trial hole. Winter groundwater was encountered in the trial hole at 1.10m. Bedrock was not encountered in the trial hole. 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 I i I I 2 3 Depth from ground surface 150 150 150 to top of hole (mm) (A): Depth from ground surface to base of hole (mm) (B): 550 550 550 Depth of hole (mm) (B -A): 400 400 400 Dimensions of hole [length x breadth (mm)]: 300x300 300x300 300x300 Step 2 Pre -Soaking Test Holes Pre-soak Date 23.03.2026 23.03.2026 23.03.2026 start Time 08.10 08.12 08.13 2n° pre-soak Date 23.03.2026 23.03.2026 23.03.2026 start Time 14.30 14.31 14.32 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 24.03.2026 24.03.2026 24.03.2026 Time Filled to 400mm 13.45 13.46 13.48 Time Water Level at I I 16.31 16.35 16.41 300mm Time to drop 100mm (Tioo) 166.00 169.00 173.00 Average Two 169.30 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 Troynor 8 Step 4 Standard Method (where Too ≤ 210min) Percolation 1 Test Hole Start Finish At Fill No. Time at Time at 300mm 200mm (min) 16.42 19.41 179.00 16.36 19.30 174.00 16.32 19.22 170.00 1 19.42 22.47 185.00 19.31 22.31 180.00 19.23 22.18 175.00 2 22.48 02.01 193.00 22.32 01.30 187.00 22.19 01.20 181.00 Average At 175.30 180.30 185.60 Average At/4 = Average At/4 = Average At/4 = 43.83 45.08 46.41 [Hole No. 1] [Hole No. 2] [Hole No. 2] 2 Start Finish Iat Time at Time at 300mm 200mm (min) 3 Start Finish Time at Time at At (min) 300mm 200mm Result of Test: Subsurface 45.01 min/25mm Percolation Value: Comments I Average percolation characteristics of the subsoil Traynor 3.3bSurface Percolation for Soil Step 1 Test Hole Preparation Percolation Test Hole 1 2 3 Depth from ground surface to top of hole (mm) (A): 0 0 0 Depth from ground surface to base of hole (mm) (B): 400 400 400 Depth of hole (mm) (B -A): 400 400 400 Dimensions of hole [length x breadth (mm)]: 300 x 300 300 x 300 300x300 300 Step 2 Pre -Soaking Test Holes Pre-soak Date 23.03.2026 23.03.2026 23.03.2026 start Time 08.15 08.16 08.18 2nd pre-soak Date 23.03.2026 23.03.2026 23.03.2026 start Time 14.34 14.36 14.37 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 24.03.2026 24.03.2026 24.03.2026 Time Filled to 400mm 13.50 13.51 13.52 Time Water Level at 300mm 16.24 16.27 16.29 Time to drop 100mm 154.00 156.00 157.00 (Tioo) Average Tioo 155.60 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 Traynor 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 I Finish Iat Time at Time at 300mm 200mm (min) 3 Start Finish Time at Time at at (min) 300mm 200mm 16.25 19.02 157.00 16.28 19.08 160.00 16.30 19.11 161.00 19.03 21.43 160.00 19.09 21.53 164.00 19.12 21.58 166.00 21.44 00.28 164.00 21.54 00.44 170.00 21.59 00.52 173.00 Average At 160.30 164.60 166.60 Average At/4 = Average Ot/4 = Average At/4 = 40.08 41.16 41.66 [Hole No. 1] [Hole No. 2] [Hole No. 2] Result of Test : Surface Percolation 40.96 min/25mm Value Comments I Average percolation characteristics of the topsoil ^�, lraynor T'A Iaoeitre., 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: 40.96min/25mm Not suitable for Development Identify all suitable options 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 45.01min/25mm Discharge Route Groundwater 5.0 RECOMMENDATION: Traynor Environmental recommends that an O'Reilly Oakstown Treatment System or Propose to install similar manufactured EN certified system and gravity discharge into 500mm wide trenches (Option 3 EPA Code of Practice 2021). And discharge to Groundwater Invert level of the trench/bed 0.90m Below Ground Level (BGL) gravel or drip tubing (m) 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 45.01min/25mm indicating adequate percolation characteristics of the Sub -surface. A surface value rating of 40.96min/25mm was attained indicating adequate percolation characteristics of the surface. Groundwater was encountered in the trial hole at 2.10. Winter groundwater was encountered in the trial hole at a depth of 1.1m. Bedrock was not encountered in the trial hole. A purpose-built polishing 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 percolation area at all times. The distribution pipes used in this system will be smooth walled, have a diameter of 100mm, have 8mm holes drilled in them 75mm apart, and each pipe should be spaced parallel and 2500mm centre to centre apart. Traynor Environmental Ltd also recommends that the O' Reilly 0akstown Treatment System and polishing filter construction is overseen by a suitable qualified and accredited person. 7,raynor t,d. 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 O' Reilly Oakstown Type Treatment System Soil 100m (10No. 10m 300mm 0.20m AGL Capacity PE 8 Trenches) Constructed N/A N/A I N/A Sizing of Primary Compartment Wetland Other N/A N/A N/A 4 m2 Polishing Filter: (Section 10.1) Surface Area Sand Filter (m2) N/A No. of Trenches N/A Option 1— Direct Discharge Surface area (m2) N/A Length of Trenches (m) N/A Option 2— Pumped Discharge Surface Area (m2) N/A Invert Level (m) N/A 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 O'Reilly Oakstown Treatment System and Soil Polishing Filter DISCHARGE ROUTE: Groundwater V Hydraulic Loading Rate (I/m2. d) 900 Surface Area (m2) Surface Water Discharge Rate (m3/hr) 0.011 QUALITY ASSURANCE: Installation & Commissioning Recommend to be overseen by plant supplier. )]raynor a or .' 13 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 I. T, Cert SHWW, EPA/FAS Course Certified Professional Indemnity Insurance Holder (Cl million cover) Date of Report: 14.04.2 026 Phone: 049 9522236 Fax: 049 9522808 E-mail: nevin@traynorenvironmental.com Indemnity Insurance Number: 24/1/03161 (Renewed 12`h July 2025) Signed: Nevin Traynor BSc. Env, H.Dip I. T, Cert SHWW, EPA/FAS Cert. For Traynor Environmental Ltd Troynor 14 Plan View ID ao Traynor Th,irLL!L, 15 Cross Section C 0 U ,a) V ) 0 L U L- U) D) 0 a- 0 Traynor 16 8.0 SITE PHOTOGRAPHS Facing North From the Facing South From the Proposed Percolation Area Proposed Percolation Area Facing East From the Proposed Percolation Area Trial Hole — Front View 3 , "S.E., IL? : ' Traynor rn.,,rn ? 17 Facing West From the Proposed Percolation Area R� Trial Hole — Side View Percolation ("T") -a I L `•; } Percolation ("T") Y / f3sl } } � i'-7A• 1� Percolation ("T") f. s i Y � Traynor r18nNrm�an,ol IrJ.� Maps Used As Part of the EPA Site Suitability Assessment Groundwater/Aquifer Map From the GSI Groundwater Aquifer Map Site is classified as Pl — Poor Aquifer - Bedrock which is Generally Unproductive except for Local Zones Vulnerability Map r. From the GSI Vulnerability Map Site is classified as High Traynor Fntin,, rn i hJ., 19 Bedrock Map 7 \\ 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 Sandstone and shale till (Lower Palaeozoic) Traynor Pommmnml IJ, 20 9.0 EPA/FAS CERTIFICATE • �FETAC n.nhrr kJvroi on aM National Skills Certificate • (FAS) Awarded to Bronnta or Nevin Traynor S - -- who has achieved the Nat onal Standards for u blruin Caighdenir Ndisi�into amach maidir le Site Suitability Assessment for On -Site Wastewater Treatment Systems ny.i lTir(. •fr.tnM<. a?Ff. F/NSC 003535 Tn,ynor 21 10.0 P.1 INSURANCE Griffiths d Armour Europe DAC If C-O-orWe's uuiy 3f3 10)1 X82 a7d3 Cub' n 2 inFoL&.0rifithsandarmour.com DO2VRBB tarirrthsandarmour.com PROFESSIONAL INDEMNITY INSURANCE Griffiths Q Armour An Ann Company We confirm the following details relating to our client's Professional Indemnity Insurance: Insured: Traynor Environmental Ltd Address: Belturbet 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: 24/1103161 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. Dlrr:b,r: G Tinney C Eons iUq) 0.1 V,M31?y 4Ui:V T Cosryta.e (ttn-Evecu7v_ } eyIrlece1 In irelantl No. Ei2200 Rv lstere74^fx: Flaor3Pararr[cnl Court Cor gnore Can5y7arJ 6uttl055P3Ttc ou'rn It DIBROC7 Imona Gnr rtfs S Ar^r7Jr EuroFe De513natr_,7 A.C.I,tCy Cortiany, Ira119 as G" tllhs & Ann[ Jr Is rn3Uaeo by rre cereal Ut rf r IrHal7 VAT No. 0550000 An Ann Con -calf 1 raynor Fnrr,.nmr rJ. '-- - ' 22 PROPOSAL FOR A O'REILLY OAKSTOWN TREATMENT SYSTEM PREPARED FOR PAUL GILDERNEW TULLYCOORA ORAM CASTLEBLAYNEY CO. MONAGHAN 1rn/nor r_,,,� n4hL, 23 TRAYNOR ENVIRONMENTAL LTD EPA SEWAGE LOADING SIZING CHART - PAUL GILDERNEW Situation Source Litres/day Person GODS g/d Person PE Organic Loading Number of Persons Population (Organic) Hydraulic Loading (Lit) Organic Loading (gr) Population (Hydraulic) Dorneslic Normal Resident 150 60 1.00 6 6 900 360 6.00 Industrial Office and/or factory without canteen 30 20 0.33 0 0 0 0.00 Office and/or factorywith canteen 60.0 30.0 0.5 0 0 0 0.00 Open Industrial Site e.g. Quarry 40.0 25.0 0.4 0 0 0 0.00 School Non- residential with cooking on -site Students 60.0 30.0 0.5 0 0 0 0.00 6hr Shock Non-residential with no -cooking on site 35 20 0.33 0 0 0 0.00 Football dubs Players Incl. showers 30 20 0.33 0 0 0 0.00 Spectators -Toilet blocks 8 10 0.17 0 0 0 0.00 Amenity Sites Restuarants 15 15 0.25 0 0 0 0.00 Function rooms 10 10 0.17 0 0 0 0.00 Toilet blocks (per use) 8 10 0.17 0 0 0 0.00 Toilet blocks (long stay car parks) 10 15 0.25 0 0 0 0.00 Golf clubs 25 15 0.25 0 0 0 0.00 Squash, with club house 25 15 0.25 0 0 0 0.00 Swimming 10 10 0.17 0 0 0 0.00 6 91)0 360 6.00 Loadings Population Org 6.00PE Hydraulically 6.00PE Treatment System Proposed: O' Reilly Oakstown Treatment System & Perolation Area Date: 14th April 2026 Applicant Name: Paul Gildernew Site Address: Tullycoora, Oram, Caslteblayney, 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 B0D5 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 1.0m3 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: 45.01 min/25mm as per Site Characterisation Form. Surface value: 40.96min/25mm as per Site Characterisation Form. Depth from ground surface to water table: 2.10 Depth from ground surface to winter groundwater level: 1.10m Depth from ground surface to bed rock: None Encountered. ►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-52074 Aachen Certified according to ^r' iS0 9001:2000 ; ,! Notified Body number: 1739 . 0.38 kg/d 1.20 ms/d steel reinforced concrete pass pass Efficiency Effluent COD 93.0 % 46 mg/I BOD5 97.5 % 8 mgll NH4-N 61.0% 13 mg/I SS 96.7% 12 mg/I 2.0 kWh/d ^F r ^' J ri C\2 ' testd E.Im:=. C,°ober 201 INSTRUCTIONS_) •' • BAF System Q 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. ira,I : i . 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 7(1) 10(3> Adjacent dwelling 7(11 10(3> Wall 3(l) 3 Road 4(1) 4 Site boundary 3(1) 3 Portable water source 10 30 - 100(2) Watercourse 10 10 13 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. 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. ® 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 O Generally the Oakstown BAF 2 -Tank System is installed side by side as follows: See Diagram 1. Dig a hole 3300mm (lift) 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 i,p_______ 915mm Chamber 2400mm E---------------------- 3,-0„ , AJ 8-0„ secondary ': e primary tank 1 treatment tank o = o' M r Two Tank BAF Unit 3300mm '------------------------------------------------------------------------------------------------------------ as shown from above 110' ----------------------' Oakstown, Trim Telephone: 046-943- 1389 E-mail: into@oreillyoakstown.com Co. Meath Fax: 046 - 943 - 7054 Web: www.oreillyoakstown.com INSTRUCTIONS----------- BAF System The second tank sits 150mm (6inch) 11 lower as shown in Diagram 2: E O O Two Tank BAF unit as shown side by side 150mr,, When fitting tanks in tandem, dig a hole 6700mm (22ft) long by 1825mm (6ft) wide. Again dig 1500mm (5ft) below the invert for the first tank and drop 100mm (4inch) for the second tank. Q Although it is not essential, a bed of screenings will help to ensure a level surface for each tank. O 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. 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. Q 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 ® 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. 25 - 40mm Screening / From Dwelling 110mm Piping + Ill Distribution Box It Inspection Chamber 32mm Hydrodare Trench tE Fall of 1:200 in Percolation Pipe F-----------)................... ...................minimum100mm Percolation Pipe primary tank', secondary treatment tank Length of pipe dependant on soil type. Percolation bed dependant on water table. Consult O'Reilly Oakstown if in doubt. ❑ Sample Percolation Area Iic (NOT TO SCALE) Maintenance ® 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 BPE WTS :: 11/14 Oakstown, Trim Co. Meath Telephone: 046 - 943 - 1389 Fax: 046 - 943 - 7054 E-mail: info@oreillyoakstown.com Web: www.oreillyoakstown.com Oakstown BPE BAF SYSTEM Sectional Elevation TWO CHAMBER PRIMARY HOUNNO TANK EXCESS BIOLOGICAL THREE CHAMBER BAP UNIT INSPECTION CHAMBER ACCESS COVER ER SLUDGE REMOVAL ACCESS ACCESS I COVER CO COVER COVER 1 COMPRESSOR INLET C _ t -T:i y reacounox naEn L - - BIOJ.1EDIUM DISCHARGE CHAMBER SECONDAR V TB EATM ENT CHAMBER BOTH AIR DISTRIBUTION CLARIFIERWTTH AND MO -MEDIUM SLUDGE REMOVAL W WTS LAYOUT - OPTION A 2720 2720 TWO CHAMBER PRIMARVHO dN-T NK TNft H MR RBAP NIT ij l I I IiI i I I AP coYPX2T ' l INSPECTION CHAMBER INLEiy { '� Pn1 u + �- 1�<< 1; ; -----------------------�� - -�' - W WTS LAYOUT - OPTION B 2720 TWO CH MB RPRI ARVH INOT NK I ' INSPECTION CHAMBER INLET =� 4____________________ThREE PERCOt�AIMNoinG CHeMB R BRA DIET I! ____ I I I i 2727-2727 Oi ;� II II II III I1 PROJECT: LITRES. LITRES: 8(100 SR -MM O'Reilly Oakstown O'REILLY OAKSTOWN LTD. �j�', O'REILLY OAKSTOWN WEIGHT: TEW BAF - WASTEWATER SYSTEMS TREATMENT %" TRIM, CeMEATM JIW� Emw:,mp...ar=.w1m1,,.rem Y OAIDILLY TITLE: ePE BAF SYSTEM TANK 1:6500Fg TANK 2:6500kg O'REILLY r.l loaOMosalses P. r(OA940Tv Mo DRAWN: CHECKED: CALE SORER__________________________________ DWa NO. nEV: DATE: —Concrete— T.Nlninskl D. O'Reilly N.T.S. 0502 201702 8000 1252010