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HomeMy WebLinkAbout2660057 - F.I. Received Doc. - Site assessment report 1 SOIL CHARACTERISATION AND SITE SUITABILITY ASSESSMENT REPORT TE REF: 18/429TE MAGHERACLOONE GAA LISNAKEENY & CAMAGHY MAGHERACLOONE CO MONAGHAN IN ACCORDANCE WITH EPA CODE OF PRACTICE WASTEWATER TREATMENT AND DISPOSAL SYSTEMS SERVING SINGLE HOUSES 2009 Traynor Environmental Ltd Belturbet Business Park, Creeny, Belturbet Co. Cavan Tel: +353 49 9522236 Fax: +353 49 9522808 Web: www.traynorenvironmental.com RECEIVED: 28/05/2026 2 SITE CHARACTERISATION FORM FOR AN ON-SITE WASTEWATER TREATMENT SYSTEM CONTENTS 1.0 GENERAL DETAILS 2.0 DESK STUDY 3.0 ON SITE ASSESSMENT 3.1 VISUAL ASSESSMENT 3.2 TRIAL HOLE ASSESSMENT 3.3 PERCOLATION (“T” Test for Deep Subsoils and Water Table) Step 1 Test Hole Preparation Step 2 Pre-Soaking Test Holes Step 3 Measuring T100 Step 4 Standard Method (where T100 ≤ 210min) 3.4 PERCOLATION (“P” Test for Shallow Subsoils and High Water Table) Step 1 Test Hole Preparation Step 2 Pre-Soaking Test Holes Step 3 Measuring P100 Step 4 Standard Method (where P100 ≤ 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. RECEIVED: 28/05/2026 3 1.0 GENERAL DETAILS (From planning application) Name(S) Magheracloone GAA Address Site Location and Townland c/o Niall Smith Architects Hall St, Kingscourt, Co. Cavan. Magheracloone Co Monaghan Telephone Number N/A Fax Number N/A Email N/A Proposed No of Players 40 Proposed No. of Spectators 20 Proposed Water Supply Mains Private Well/Borehole Group Well/Borehole  2.0 DESK STUDY Soil Type Soil Association 29 Acid Brown Earths (75%),Interdrumlin Peat and Peaty Gleys (25%) Aquifer Category: Regionally Important Locally Important LM Poor Vulnerability Extr Hg  Moderate Low High to Low Unknown Bedrock Type PTS- Permo-Triassic Sandstones Name of Public/Group Scheme Water Supply within 1km Unknown Groundwater Protection Scheme (Y/N) Yes Source Protection Area SI N/A SO N/A Groundwater Protection Response: R1 Presence of Significant sites (Archaeological, natural and historical): None identified at this stage. Past experience in the area: Soils of poor permeability form the subsoil for much of this general area. R1= Acceptable subject to normal good practice. 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 ‘High’ Vulnerability, ground water may be at risk around the site. 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. RECEIVED: 28/05/2026 4 3.0 ON-SITE ASSESSMENT 3.1 Visual Assessment Landscape Position Relatively Flat Slope Steep <1:5 Shallow 1.5 to 1.20 Relatively Flat  Surface features within a minimum of 250 metres (Distances to features should be noted in metres) Houses Neighbouring houses located >20m southeast and 40m west from the proposed percolation area (ppa). Mac fab systems is located >150m south from the ppa. Church located >150m southeast from the ppa. Industrial poultry sheds located >200m southwest from the ppa. Existing Land Uses Agricultural Grassland Vegetation Indicators Grass is the predominant vegetation type in the ppa. Absence of rushes could indicate good percolation characteristics of the subsoil. Groundwater Flow Directions South direction. Ground Condition Ground conditions are best described as firm in the ppa and throughout the site. Site Boundaries Hedge and road are located <5m north and east from the ppa.Hedge surrounds both the south and west boundaries of the site. Roads Local road located <5m north and east from the ppa. Outcrops (Bedrock and/or subsoil) None evident within the locality. Surface water ponding No surface water ponding evident in the ppa when examined on 17.10.18. It must be noted that weather conditions prior to the site assessment tak ing place was generally dry and bright conditions. Drainage Ditches Dry ditch located <5m east from the ppa. Beaches/Shellfish None occur within 200m of the ppa. Karst Features None occur within 200m of the ppa. Lakes None occur within 50m of the ppa. Areas/Wetlands None occur within 200m of the ppa. Watercourse/ streams Stream located >120m west from the ppa. 0.2m of water was present within stream on the day of inspection (17.10.18). Springs/Wells 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 (2009). 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 (2009), none are deemed to be at risk from the proposed polishing filter’s installation. RECEIVED: 28/05/2026 5 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 d oes 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. RECEIVED: 28/05/2026 6 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 Groundwater Flow Direction Approximate Location of Trial Hole & Percolation Test Holes Examined on 17.10.18 RECEIVED: 28/05/2026 7 3.2 Trial Hole Should be a minimum 2.10m deep Depth of Trial Hole 2.20m BGL Depth from Ground Surface to bedrock (m) if Present None Encountered Depth from Ground Surface to Water Table (m) if Present None Encountered Depth of water ingress None Encountered Rock Type if Present None Encountered Date and Time of Excavation 15.10.18 09.00 Date and Time of Examination 17.10.18 10.00 Depth of P & T Test Soil/Subsoil Texture Classification Plasticity and Dilatancy Soil Structure Density Compactness Colour Preferential Flowpaths 0.1m Silt/Clay Ribbons Crumb Low Brown 0.2m 10.10.10 0.3m Depth of P 1,1,1Threads 0.4m Test 0.5m Depth of T Clay Ribbons Crumb Low Brown 0.6m Test (Intermixed 20.30.40 0.7m With Stone) 1,1,2Threads 0.8m 0.9m 1.0m 1.1m Ribbons 1.2m Stone 10.10.10 Crumb Low Blue 1.3m 1,1,1Threads 1.4m 1.5m 1.6m Clay Ribbons Crumb Low Red/ Orange 1.7m (Intermixed 30.40.50 1.8m With Stone & Gravel) 1,2,2Threads 1.9m 2.0m 2.1m 2.2m 2.3m EVALUATION: Weather conditions: Dry and overcast According To The Flowchart For Describing Subsoil’s based on BS5930:1999, the subsoil is bes t described as CLAY intermixed with stone & gravel. Groundwater was not encountered in the trial hole; Bedrock was not encountered in the trial hole. Likely T Value <90.00 min /25mm *Note: Depth of percolation test holes should be indicated on log above (Enter P & T Depths as appropriate) * See Appendix E for BS5930 Classification ** 3 samples to be tested *** All signs of mottling should be recorded. RECEIVED: 28/05/2026 8 3.3a Percolation (“T” Test for Deep Subsoils and Water Table) Step 1 Test Hole Preparation Percolation Test Hole 1 2 3 Depth from ground surface to top of hole (mm) (A): 400 400 400 Depth from ground surface to base of hole (mm) (B): 800 800 800 Depth of hole (mm) (B-A): 400 400 400 Dimensions of hole [length x breadth (mm)]: 300 x 300 300 x 300 300 x 300 Step 2 Pre-Soaking Test Holes Date and Time Pre- soaking Started 16.10.18 09.30 16.10.18 09.30 16.10.18 09.30 Each hole should be pre-soaked twice before the test is carried out. Each hole should be empty before refilling. Step 3 Measuring T100 Percolation Test Hole 1 2 3 Date of Test 17.10.18 17.10.18 17.10.18 Time Filled to 400mm 10.00 10.00 10.00 Time Water Level at 300mm 11.45 11.52 11.58 Time to drop 100mm (T100) 105.00 112.00 118.00 Average T100 111.60 If T100 >300mins then T Value >90 – site unsuitable for discharge to ground If T100 ≤ 210mins then go to Step 4 If T100 ≥ 210mins then go to Step 5 RECEIVED: 28/05/2026 9 Step 4 Standard Method (where T100 ≤ 210min) Percolation Test Hole 1 2 3 Fill No. Start Time at 300mm Finish Time at 200mm ∆t (min) Start Time at 300mm Finish Time at 200mm ∆t (min) Start Time at 300mm Finish Time at 200mm ∆t (min) 1 11.46 13.34 108.00 11.53 13.49 116.00 11.59 14.00 121.00 2 13.35 15.26 112.00 13.50 15.49 119.00 14.01 16.05 124.00 3 15.27 17.22 115.00 15.50 17.53 123.00 16.06 18.14 128.00 Average ∆t 111.60 119.30 124.30 Average ∆t/4 = [Hole No. 1] 27.92 Average ∆t/4 = [Hole No. 2] 29.83 Average ∆t/4 = [Hole No. 2] 31.08 Result of Test : T 29.61 min/25mm Comments Percolation “T” Test Result 29.61min/25mm. Good Percolation Characteristics of the Subsoil Material RECEIVED: 28/05/2026 10 3.4 Percolation (“P” Test for Shallow Subsoils and Water Table) 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 300 300 x 300 Step 2 Pre-Soaking Test Holes Date and Time Pre-soaking Started 16.10.18 09.40 16.10.18 09.40 16.10.18 09.40 Each hole should be pre-soaked twice before the test is carried out. Each hole should be empty before refilling. Step 3 Measuring P100 Percolation Test Hole 1 2 3 Date of Test 17.10.18 17.10.18 17.10.18 Time Filled to 400mm 10.05 10.05 10.05 Time Water Level at 300mm 11.31 11.35 11.38 Time to drop 100mm (P100) 86.00 90.00 93.00 Average P100 89.60 If T100 >300mins then T Value >90 – site unsuitable for discharge to ground If T100 ≤ 210mins then go to Step 4 If T100 ≥ 210mins then go to Step 5 RECEIVED: 28/05/2026 11 Step 4 Standard Method (where P100 ≤ 210min) Percolation Test Hole 1 2 3 Fill No. Start Time at 300mm Finish Time at 200mm ∆t (min) Start Time at 300mm Finish Time at 200mm ∆t (min) Start Time at 300mm Finish Time at 200mm ∆t (min) 1 11.32 13.01 89.00 11.36 13.09 93.00 11.39 13.15 96.00 2 13.02 14.35 93.00 13.10 14.47 97.00 13.16 14.56 100.00 3 14.36 16.12 96.00 14.48 16.30 102.00 14.57 16.42 105.00 Average ∆t 92.60 97.30 100.30 Average ∆t/4 = [Hole No. 1] 23.16 Average ∆t/4 = [Hole No. 2] 24.30 Average ∆t/4 = [Hole No. 3 25.08 Result of Test : P 24.18 Min/25mm Comments Percolation “P” Test Result 24.18min/25mm. Good Percolation Characteristics of the Topsoil Material RECEIVED: 28/05/2026 12 4.0 CONCLUSIONS of SITE CHARACTERISATION: Not suitable for Development Suitable for Discharge Route 1. Septic tank System (Septic tank and soil percolation system)  Groundwater 2. Secondary Treatment System a. Septic tank and intermittent filter system and polishing unit  b. Package Wastewater Treatment system and polishing unit  5.0 RECOMMENDATION: Propose to install Traynor Environmental recommends that an O’ Reilly Oakstown treatment system and a soil polishing filter constructed in accordance with EPA Guidelines 2009 is installed. And discharge to Groundwater Trench Invert Level (m) 0.20m Below Ground Level (BGL) Site Specific Conditions (if any) e.g. special works, Site Improvement Works, Testing etc. The tests showed that the site has a ‘’T’’ value rating of 29.61min/25mm indicating good percolation characteristics of the subsoil. A “P” value rating of 24.18min/25mm was attained indicating poor percolation characteristics of the topsoil. Groundwater was not encountered in the trial hole. Bedrock was not encountered in the trial hole. A purpose built soil 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/soil pol ishing filter 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 300mm apart, and each pipe should be spaced parallel and 2000mm apart. The distribution pipes will be bedded on 250mm depth of crushed stone (20 - 30 mm in size). Once the distribution pipes are in place they should be surrounded and covered to a depth of 150mm of crushed stone which should extend the full width of the soil polishing filter. Before the distribution pipes are backfilled with the topsoil the crushed stone should be covered with geotextile or similar permeable or durable materials. This is to prevent the stone being silted up with topsoil. Traynor Environmental Ltd also recommends that the soil polishing filter construction and the installation of the O’Reilly Oakstown Treatment System is overseen by a suitable qualified and accredited person. RECEIVED: 28/05/2026 13 6.0 TREATMENT SYSTEM DESIGN DETAILS SYSTEM TYPE: Septic Tank System 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: O’ Reilly Oakstown SuperBAF Treatment System & Soil Polishing Filter Filter Systems Package Treatment Systems Media Type Area (m2) Deep of Filter (m) Invert Level (m) Type Sand/Soil N/A N/A N/A O’ Reilly Oakstown Treatment System Soil 6No. 18m Trenches 0.25m 0.20m BGL Capacity PE 16 Constructed Wetland N/A N/A N/A Sizing of Primary Compartment Other N/A N/A N/A 4 m2 SYSTEM TYPE: Tertiary Treatment System Polishing Filter: Surface Area (m2) N/A Package Treatment Systems: Capacity (PE) N/A or Gravity Fed: Constructed Wetland: Surface Area (m2) N/A No. of Trenches N/A Length of Trenches (m) N/A Invert Level (m) N/A DISCHARGE ROUTE: Groundwater  Hydraulic Loading Rate (l/m2.d) 1360l/d Surface Water Discharge Rate 0.013l/s TREATMENT STANDARDS: Treatment System Performance Standards (mg/l) BOD SS NH3 Total N Total P O’Reilly Oakstown Treatment System SuperBAF Treatment and Polishing filter/percolation 20 30 21 5 - 10 12.5 QUALITY ASSURANCE: Installation & Commissioning On-going Maintenance Recommend to be overseen by plant supplier. Maintain and de-sludge annually RECEIVED: 28/05/2026 14 7.0 SITE ASSESSOR DETAILS Company: Traynor Environmental Ltd Prefix: Mr. First Name: Nevin Surname: Traynor Address: Belturbet Business Park, Creeny, Belturbet, Co. Cavan. Qualifications/Experience: BSc. Env, H.Dip I.T, Cert SHWW, EPA/FAS Course Certified Professional Indemnity Insurance Holder (€1 million cover) Date of Report: 24.10.18 Phone: 049 9522236 Fax: 049 9522808 E-mail: nevin@traynorenvironmental.com Indemnity Insurance Number: 17/1/02265 (Renewed 12th July 2018) Signed: Nevin Traynor BSc. Env, H.Dip I.T, Cert SHWW, EPA/FAS Cert. For Traynor Environmental Ltd RECEIVED: 28/05/2026 15 8.0 SITE PHOTOGRAPHS Facing East From the Proposed Percolation Area Facing North From the Proposed Percolation Area Facing South From the Proposed Percolation Area Facing West From the Proposed Percolation Area Trial Hole – Front View Trial Hole – Side View RECEIVED: 28/05/2026 16 Percolation (“T”) Test 1 Percolation (“T”) Test 2 Percolation (“T”) Test 3 Percolation (“P”) Test 1 Percolation (“P”) Test 2 Percolation (“P”) Test 3 RECEIVED: 28/05/2026 17 Maps Used As Part of the EPA Site Suitability Assessment Groundwater/Aquifer Map From the GSI Groundwater Aquifer Map Site is classified as LM- Locally Important Aquifer - Bedrock which is Generally Moderately Productive Vulnerability Map From the GSI Vulnerability Map Site is classified as High RECEIVED: 28/05/2026 18 Bedrock Map From the GSI Bedrock Map the Site is classified as PTS- Permo-Triassic Sandstones Teagasc Subsoil Map From the GSI Teagasc Subsoil Map Site is classified as Fine loamy drift with siliceous stones RECEIVED: 28/05/2026 19 9.0 EPA/FAS CERTIFICATE RECEIVED: 28/05/2026 20 10.0 P.I INSURANCE RECEIVED: 28/05/2026 21 PROPOSAL FOR A O’REILLY OAKSTOWN PACKAGE TREATMENT SYSTEM PREPARED FOR MAGHERACLOONE GAA LISNAKEENY & CAMAGHY MAGHERACLOONE CO. MONAGHAN RECEIVED: 28/05/2026 TRAYNOR ENVIRONMENTAL LTD MAGHERACLONNE GAA Situation Source Litres/day BOD5 g/d PE Organic Number of Population Hydraulic Organic Pupulation Person Person Loading Persons (Organic)Loading (Lit)Loading (gr)(Hydraulic) Domestic Normal Resident 150 60 1.00 0 0 0 0.00 Industrial Office and/or factory without canteen 30 20 0.33 0 0 0 0.00 Office and/or factory with 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 clubs Players incl. showers 30 20 0.33 40 13.2 1200 800 6.67 Spectators - Toilet blocks 8 10 0.17 20 3.4 160 200 0.89 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 16.6 1360 1000 7.56 Loadings Population Org 16.6PE Hydraulically 7.56PE System Proposed - O Reilly Oakstown Treatment SuperBAF Treatment System & Soil Polishing Filter RECEIVED: 28/05/2026 RECEIVED: 28/05/2026 RECEIVED: 28/05/2026