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HomeMy WebLinkAbout2660353 - Site assessment reportSITE CHARACTERISATION FORM COMPLETING THE FORM Section 3.2 In this section use an underline _____ across all six columns to indicate the depth at which changes in classification / characteristics occur. Section 3.4 Lists supporting documentation required. Section 4 Select the treatment systems suitable for this site and the discharge route. Section 5 Indicate the system type that it is proposed to install. Section 6 Provide details, as required, on the proposed treatment system. Notes: All calculations in this form are automatic. Where possible information is presented in the form of drop down selection lists to eliminate potential errors. Variable elements are recorded by tick boxes. In all cases only one tick box should be activated. All time record fields must be entered in twenty four hour format as follows: HH:MM All date formats are DD-MM-YYYY. All other data fields are in text entry format. This form can be printed out fully populated for submission with related documents and for your files. It can also be submitted by email. Step 1: Goto Menu Item File, Save As and save the file under a reference relating to the client or the planning application reference if available. Use the Clear Form button to clear all information fields. Note: This form requires the latest version of Adobe Acrobat Reader and on PC’s Windows 7 or later. Windows XP produces errors in calculations REC E I V E D : 2 5 / 0 8 / 2 0 2 6 2.0 GENERAL DETAILS (From planning application) Soil Type, (Specify Type): Subsoil, (Specify Type): Bedrock Type: Aquifer Category: Regionally Important Locally Important Poor Vulnerability: Extreme High Moderate Low Groundwater Body: Status Name of Public/Group Scheme Water Supply within 1 km: Source Protection Area: ZOC SI SO Groundwater Protection Response: Presence of Significant Sites (Archaeological, Natural & Historical): Past experience in the area: Comments: (Integrate the information above in order to comment on: the potential suitability of the site, potential targets at risk, and/or any potential site restrictions). Note: Only information available at the desk study stage should be used in this section. APPENDIX A: SITE CHARACTERISATION FORM File Reference: 1.0 GENERAL DETAILS (From planning application) Prefix: First Name: Surname: Address: Site Location and Townland: Number of Bedrooms: Maximum Number of Residents: Comments on population equivalent Proposed Water Supply: Mains Private Well/Borehole Group Well/Borehole Peter Daly Drumhaffiff North, Castleblayney, Co Monaghan 6 Till derived chiefly from lower palaeozoic rocks Till derived chiefly from lower palaeozoic sandstone and shales Silurian Metasediments and Volcanics 4 None Mr Pl 4 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 minimized None Unknown R2¹ Existing well on-site 4 REC E I V E D : 2 5 / 0 8 / 2 0 2 6 3.0 ON-SITE ASSESSMENT 3.1 Visual Assessment Landscape Position: Slope: Steep (>1:5) Shallow (1:5-1:20) Relatively Flat (<1:20) Slope Comment Surface Features within a minimum of 250m (Distance To Features Should Be Noted In Metres) Houses: Existing Land Use: Vegetation Indicators: Groundwater Flow Direction: Ground Condition: Site Boundaries: On sloping site 4 Dwelling House 60 meters West Agriculture Grass North to South Dry underfoot Mature hedgerows with trees REC E I V E D : 2 5 / 0 8 / 2 0 2 6 3.0 ON-SITE ASSESSMENT 3.1 Visual Assessment (contd.) Roads: Outcrops (Bedrock And/Or Subsoil): Surface Water Ponding: Lakes: Beaches/Shellfish Areas: Wetlands: Karst Features: Watercourses/Streams:* *Note and record water level Local road to South boundary None None None within 500 meters None None None None noted REC E I V E D : 2 5 / 0 8 / 2 0 2 6 Comments: (Integrate the information above in order to comment on: the potential suitability of the site, potential targets at risk, the suitability of the site to treat the wastewater and the location of the proposed system within the site). *Note and record water level 3.0 ON-SITE ASSESSMENT 3.1 Visual Assessment (contd.) Drainage Ditches:* Springs:* Wells:* Open drainage ditch to N/E boundary None None No water sources noted to be at risk REC E I V E D : 2 5 / 0 8 / 2 0 2 6 3.2 Trial Hole (should be a minimum of 2.1m deep (3m for regionally important aquifers)) Depth of trial hole (m): Depth from ground surface Depth from ground surface to bedrock (m) (if present): to water table (m) (if present): Depth of water ingress: Rock type (if present): Date and time of excavation: Date and time of examination: Depth of Surface and Subsurface Soil/Subsoil Percolation Texture & Plasticity and Soil Density/ Colour**** Preferential Tests Classification** dilatancy*** Structure Compactness flowpaths 0.1 m 0.2 m 0.3 m 0.4 m 0.5 m 0.6 m 0.7 m 0.8 m 0.9 m 1.0 m 1.1 m 1.2 m 1.3 m 1.4 m 1.5 m 1.6 m 1.7 m 1.8 m 1.9 m 2.0 m 2.1 m 2.2 m 2.3 m 2.4 m 2.5 m 2.6 m 2.7 m 2.8 m 2.9 m 3.0 m 3.1 m 3.2 m 3.3 m 3.4 m 3.5 m Likely Subsurface Percolation Value: Likely Surface Percolation Value: Note: *Depth of percolation test holes should be indicated on log above. (‘Enter Surface or Subsurface at depths as appropriate). ** See Appendix E for BS 5930 classification. *** 3 samples to be tested for each horizon and results should be entered above for each horizon. **** All signs of mottling should be recorded. To avoid any accidental damage, a trial hole assessment or percolation tests should not be undertaken in areas which are at or adjacent to significant sites, (e.g. NHAs, SACs, SPAs, and/or Archaeological etc.), without prior advice from National Parks and Wildlife Service or the Heritage Service. 2.1 N/A 1.5 1.5 N/A P-Test T-test Silt Silt/Clay Winter High Water Table ------------------------------ Base of Hole ------------------------------ Dilatent Difficult to Dilate -------------------------- -------------------------- Granular Blocky --------------------- --------------------- Un-Compact Un-Compact --------------------------------- --------------------------------- Grass roots --------------------------------- ---------------------------------- 32 20 10:0009:00 Brown Yellowish Brown -------------------- -------------------- 15-Jul-2026 17-Jul-2026 REC E I V E D : 2 5 / 0 8 / 2 0 2 6 3.3(a) Subsurface Percolation Test for Subsoil x x x 3.2 Trial Hole (contd.) Evaluation: Step 1: Test Hole Preparation Percolation Test Hole 1 2 3 Depth from ground surface to top of hole (mm) (A) Depth from ground surface to base of hole (mm) (B) Depth of hole (mm) [B - A] Dimensions of hole [length x breadth (mm)] Step 2: Pre-Soaking Test Holes Pre-soak start Date Time 2nd pre-soak Date start Time 2 3 Each hole should be pre-soaked twice before the test is carried out. Step 3: Measuring T100 Percolation Test Hole No. 1 Date of test Time filled to 400 mm Time water level at 300 mm Time (min.) to drop 100 mm (T100 ) Average T100 If T100 > 480 minutes then Subsurface Percolation value >120 – site unsuitable for discharge to ground If T100 ≤ 210 minutes then go to Step 4; If T100 > 210 minutes then go to Step 5; Winter high water table level. Ensure adequate separation distance of 1.2 meters can be achieved between the invert level of percolation pipes and the water table level. 400 400 400 800 800 800 400 400 400 300 300 300300 300300 16-Jul-2026 16-Jul-2026 16-Jul-2026 16-Jul-2026 16-Jul-2026 16-Jul-2026 09:00 09:00 09:00 04:3004:30 04:30 17-07-2026 09:10 09:55 17-07-2026 17-07-2026 09:10 09:59 09:51 09:10 3 45.00 49.00 41.00 45.00 REC E I V E D : 2 5 / 0 8 / 2 0 2 6 Result of Test: Subsurface Percolation Value = (min/25 mm) Step 4: Standard Method (where T100 ≤ 210 minutes) Percolation Test Hole 1 2 3 Fill no. Start Finish ∆t (min) Start Finish ∆t (min) Start Finish ∆t (min) Time Time Time Time Time Time (at 300 (at 200 (at 300 (at 200 (at 300 (at 200 mm)mm)mm)mm)mm)mm) 1 2 3 Average ∆t Value Average ∆t/4 = Average ∆t/4 = Average ∆t/4 = [Hole No.1](t1) [Hole No.2](t2) [Hole No.3](t3) Result of Test: Subsurface Percolation Value = (min/25 mm) Comments: Comments: Percolation Test Hole No.1 Fall of water Time Start Finish Time Kfs T – in hole (mm) Factor Time Time of fall = Tf Value = Tf hh:mm hh:mm (mins) / Tm = 4.45 = Tm / Kfs 300 - 250 8.1 250 - 200 9.7 200 - 150 11.9 150 - 100 14.1 Average T- Value T- Value Hole 1 = (T1 ) Step 5: Modified Method (where T100 > 210 minutes) Percolation Test Hole No.2 Fall of water Time Start Finish Time Kfs T – in hole (mm) Factor Time Time of fall = Tf Value = Tf hh:mm hh:mm (mins) / Tm = 4.45 = Tm / Kfs 300 - 250 8.1 250 - 200 9.7 200 - 150 11.9 150 - 100 14.1 Average T- Value T- Value Hole 2 = (T2 ) Percolation Test Hole No.3 Fall of water Time Start Finish Time Kfs T – in hole (mm) Factor Time Tim§e of fall = Tf Value = Tf hh:mm hh:mm (mins) / Tm = 4.45 = Tm / Kfs 300 - 250 8.1 250 - 200 9.7 200 - 150 11.9 150 - 100 14.1 Average T- Value T- Value Hole 3 = (T2) 09:55 10:44 49.00 10:44 11:35 51.00 11:35 12:31 56.00 52.00 09:59 10:50 51.00 10:50 11:45 55.00 11:45 12:42 57.00 54.33 09:51 10:44 53.00 10:44 11:41 57.00 11:41 12:42 61.00 57.00 T-test has passed which indicates that the subsoil is suitable to act as polishing filter. 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2 3 13.61 13.00 13.58 14.25 0.00 0.00 REC E I V E D : 2 5 / 0 8 / 2 0 2 6 3.3(b) Surface Percolation Test for Soil Step 1: Test Hole Preparation Percolation Test Hole 1 2 3 Depth from ground surface to top of hole (mm) Depth from ground surface to base of hole (mm) Depth of hole (mm) Dimensions of hole [length x breadth (mm)] Step 2: Pre-Soaking Test Holes Pre-soak start Date Time 2nd pre-soak Date start Time Each hole should be pre-soaked twice before the test is carried out. Step 3: Measuring T100 Percolation Test Hole No. 1 2 3 Date of test Time filled to 400 mm Time water level at 300 mm Time to drop 100 mm (T100 ) Average T100 If T100 > 480 minutes then Surface Percolation value >90 – site unsuitable for discharge to ground If T100 ≤ 210 minutes then go to Step 4; If T100 > 210 minutes then go to Step 5; x x x 0 400 400 0 400 400 0 400 400 300 300 300 300 300 300 16-Jul-2026 09:30 16-Jul-2026 04:30 16-Jul-2026 09:30 16-Jul-2026 04:30 16-Jul-2026 09:30 16-Jul-2026 04:30 17-Jul-26 09:30 09:45 17-Jul-26 09:30 09:52 17-Jul-2026 09:30 09:50 3 15.00 22.00 20.00 19.00 REC E I V E D : 2 5 / 0 8 / 2 0 2 6 Step 4: Standard Method (where T100 ≤ 210 minutes) Percolation Test Hole 1 2 3 Fill no. Start Finish ∆T (min) Start Finish ∆T (min) Start Finish ∆T (min) Time Time Time Time Time Time (at 300 (at 200 (at 300 (at 200 (at 300 (at 200 mm)mm)mm)mm)mm)mm) 1 2 3 Average ∆T Value Average ∆T/4 = Average ∆T/4 = Average ∆T/4 = [Hole No.1](T1 ) [Hole No.2](T2 ) [Hole No.3](T3 ) Result of Test: Surface Percolation Value = (min/25 mm) Comments: (min/25 mm) Comments: Percolation Test Hole No.1 Fall of water Time Start Finish Time Kfs T – in hole (mm) Factor Time Time of fall = Tf Value = Tf hh:mm hh:mm (mins) / Tm = 4.45 = Tm / Kfs 300 - 250 8.1 250 - 200 9.7 200 - 150 11.9 150 - 100 14.1 Average T- Value T- Value Hole 1 = (T1 ) Step 5: Modified Method (where T100 > 210 minutes) Percolation Test Hole No.2 Fall of water Time Start Finish Time Kfs T – in hole (mm) Factor Time Time of fall = Tf Value = Tf hh:mm hh:mm (mins) / Tm = 4.45 = Tm / Kfs 300 - 250 8.1 250 - 200 9.7 200 - 150 11.9 150 - 100 14.1 Average T- Value T- Value Hole 2 = (T2 ) Result of Test: Surface Percolation Value = Percolation Test Hole No.3 Fall of water Time Start Finish Time Kfs T – in hole (mm) Factor Time Time of fall = Tf Value = Tf hh:mm hh:mm (mins) / Tm = 4.45 = Tm / Kfs 300 - 250 8.1 250 - 200 9.7 200 - 150 11.9 150 - 100 14.1 Average T- Value T- Value Hole 3 = (T2) P test is a pass which indicates that topsoil is suitable to act as a polishing filter. 10:02 17.00 10:02 10:23 21.00 10:23 10:46 23.00 20.33 09:52 10:18 26.00 10:18 10:46 28.00 10:46 11:17 31.00 28.33 09:50 10:12 22.00 10:12 10:36 24.00 10:36 11:03 27.00 24.33 09:45 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 3 2 5.08 7.08 6.08 6.08 0.00 0.00 0.00 0.00 REC E I V E D : 2 5 / 0 8 / 2 0 2 6 3.4 The following associated Maps, Drawings and Photographs should be appended to this site characterisation form. 1 The calculated percolation area or polishing filter area should be set out accurately on the site layout drawing in accordance with the code of practice’s requirements. 1. Discovery Series 1:50,000 Map indicating overall drainage, groundwater flow direction and housing density in the area. 2. Supporting maps for vulnerability, aquifer classification, soil, subsoil, bedrock. 3. North point should always be included. 4.(a) Scaled sketch of site showing measurements to Trial Hole location and (b)Percolation Test Hole locations, (c) wells and (d) direction of groundwater flow (if known), (e) proposed house (incl. distances from boundaries) (f)adjacent houses, (g)watercourses, (h)significant sites (i)and other relevant features. 5. Site specific cross sectional drawing of the site and the proposed layout1 should be submitted. 6. Photographs of the trial hole, test holes and site including landmarks (date and time referenced). 7. Pumped design must be designed by a suitably qualified person. REC E I V E D : 2 5 / 0 8 / 2 0 2 6 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 distances met? Depth of unsaturated soil and/or subsoil beneath invert of gravel (or drip tubing in the case of drip dispersal system) Percolation test result: Surface: Sub-surface: Not Suitable for Development Suitable for Development Identify all suitable options Discharge Route 1 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) 4.0 CONCLUSION of SITE CHARACTERISATION 5.0 SELECTED DWWTS Propose to install: and discharge to: Invert level of the trench/bed gravel or drip tubing (m) Site Specific Conditions (e.g. special works, site improvement works testing etc. 1 A discharge of sewage effluent to “waters” (definition includes any or any part of any river, stream, lake, canal, reservoir, aquifer, pond, watercourse or other inland waters, whether natural or artificial) will require a licence under the Water Pollution Acts 1977-90. Refer to Section 2.4. 13.61 Ground water 125.60 Ground level at percolation area to be raised as per attached details in order to achieve adequate separation distance between percolation pipes and water table level. 1/200 4 1.90 4 Tertiary Treatment System and Infiltration /treatment area Ground Water No Yes Yes 6.08 REC E I V E D : 2 5 / 0 8 / 2 0 2 6 SYSTEM TYPE: Septic Tank Systems (Chapter 7) Tank Capacity (m3) Percolation Area Mounded Percolation Area No. of Trenches No. of Trenches Length of Trenches (m) Length of Trenches (m) Invert Level (m) Invert Level (m) SYSTEM TYPE: Secondary Treatment System (Chapters 8 and 9) and polishing filter (Section 10.1) Secondary Treatment Systems receiving septic tank effluent Packaged Secondary (Chapter 8) Treatment Systems receiving raw wastewater (Chapter 9) Media Type Area (m2)* Depth of Filter Invert Level Type Sand/Soil Soil Capacity PE Constructed Wetland Sizing of Primary Compartment Other m3 Polishing Filter*: (Section 10.1) Surface Area (m2)* Option 1 - Direct Discharge Surface area (m2) Option 2 - Pumped Discharge Surface area (m2) DISCHARGE ROUTE: Groundwater Hydraulic Loading Rate * (l/m2.d) Surface area (m2) Surface Water ** Discharge Rate (m3/hr) 6.0 TREATMENT SYSTEM DETAILS * Hydraulic loading rate is determined by the percolation rate of subsoil ** Water Pollution Act discharge licence required Identify purpose of tertiary treatment Option 3 - Gravity Discharge Trench length (m) Option 4 - Low Pressure Pipe Distribution Trench length (m) Option 5 - Drip Dispersal Surface area (m2) SYSTEM TYPE: Tertiary Treatment System and infiltration / treatment area (Section 10.2) Provide performance information demonstrating system will provide required treatment levels Provide design information O'Reilly Oakstown 6 3.25 4 75.00 75.00 REC E I V E D : 2 5 / 0 8 / 2 0 2 6 Company: Prefix: First Name: Surname: Address: Qualifications/Experience: Date of Report: Phone: E-mail Indemnity Insurance Number: Signature: ________________________________________ 7.0 SITE ASSESSOR DETAILS 6.0 TREATMENT SYSTEM DETAILS QUALITY ASSURANCE: Installation & Commissioning On-going Maintenance By suitably qualified installer Yearly by client Horizon Group Terence Duffy Market Square, Castleblayney, Co Monaghan BSc (Hons) Building Surveying C.Build E MCABE AssocRICS - Certified Site Suitability Assessor 0876640932 ted.duffy@horizon-group.ie API0004253 Ted Duffy Digitally signed by Ted Duffy Date: 2026.08.18 11:21:34 +01'00' 18-Aug-2026 Mr REC E I V E D : 2 5 / 0 8 / 2 0 2 6 Geo logical Survey Irelan d © Tailte É ireann | Tailt e É ireann | G eologi cal Su rvey Ire land | Teagas c, EPA & GSI | Env ironmental Pro tec tion Ag ency | Thi s m ap a nd its d a ta m a y no t b e u se d o r r ep ro d uc ed fo r co mm er ci al pu rp o se s w ith o ut th e p ri or w ri tten p er mi ssi on o f C o p yri gh t h ol d ers . Thi s m ap is a u se r g en e ra ted sta tic o u tpu t fro m a n In ter ne t ma p pi n g s ite an d is fo r g en e ra l re fe ren c e o n ly. Da ta l a ye rs th at a p pe a r o n th is m a p m ay or m a y n ot b e a cc ur ate , cu rre n t, o r o the rw i se r el ia b le . µ Map C e nt re C o ordi n ates (IT M) 6 83 ,9 48 8 14 ,85 1 IE_GSI_San d_a nd_G ra...Re gion ally impo rtan tgravel aqu ifer Locally impo rtan tgravel aqu ifer IE_GSI_Aqu ife r_G... IE_GSI_Bedro ck_A qui f...Rk c - R eg ion allyImportant Aqu ife r -Ka rs tifie d (con du it) Rk d - R eg iona llyImportant Aqu ife r -Ka rs tifie d (d iff use) Rk - Re gio nallyImportant Aqu ife r -Ka rs tifie d Rf - Re gio na llyImportant Aqu ife r -Fiss ur ed b ed ro ck Rf/Rk - Re gio na llyImportant Aqu ife r -Fiss ur edbedrock/Re gio na llyImportant Aqu ife r -Ka rs tifie d Lm - Lo ca llyImportant Aqu ife r -Be dr oc k w hich isGenerally M ode ra te lyProductive Lk - L ocallyImportant Aqu ife r -Ka rs tifie d Ll - Lo ca lly Impo rt an tAquifer - Bedr oc kwhich is Mod er atelyProductive o nly inLocal Zo ne s Pl - Po or Aq uifer -Be dr ock w hic h isGenerallyUnproductive exc ep tfor Lo ca l Z one sPu - Poor Aqu ife r -Be dr ock w hic h isGenerallyUnproductive Lak e Un cla ss ified IE GS I G roun dwater D ata Ireland Legend An Roin Com hshaoil,Aeráide agus CumarsáideDepartment pf t he Environment,Cli mate and Communic ati ons Sn ap s ho t D ate : A u gu s t 1 8 , 20 2 6 Tail te E ireann© Tai lte Ei reann Ordnance /Gov ernment of Ireland© Geologic al Surv ey Ireland/Governm ent of I reland REC E I V E D : 2 5 / 0 8 / 2 0 2 6 Geo logical Survey Irelan d © Tailte É ireann | Tailt e É ireann | G eologi cal Su rvey Ire land | Teagas c, EPA & GSI | Env ironmental Pro tec tion Ag ency | Thi s m ap a nd its d a ta m a y no t b e u se d o r r ep ro d uc ed fo r co mm er ci al pu rp o se s w ith o ut th e p ri or w ri tten p er mi ssi on o f C o p yri gh t h ol d ers . Thi s m ap is a u se r g en e ra ted sta tic o u tpu t fro m a n In ter ne t ma p pi n g s ite an d is fo r g en e ra l re fe ren c e o n ly. Da ta l a ye rs th at a p pe a r o n th is m a p m ay or m a y n ot b e a cc ur ate , cu rre n t, o r o the rw i se r el ia b le . µ Map C e nt re C o ordi n ates (IT M) 6 85 ,7 26 8 14 ,90 7 IE_GSI_Aqu ife r_G... IE_GSI_Hydro st rat igr ap...Ba salts & othe rVolcanic ro c ksPermo-Tria s sicSandstones Pe rmo -Tria s sicMudstones andGypsum Wes tph alianSandstones Wes tph alian Sh ale s Na mur ian Sha les Na mur ianSandstonesNamurianUndifferentiated Din antia n Shale s a ndLimestonesDinantian Mixe dSandstones, Sh ale sand Limest on esDinantianSandstonesDinantian PureBedded L imest on es Din antia n Up pe rImpure Lime sto nesDinantianDolomitisedLimestonesDinantian PureUnbeddedLimestonesDinantian Lo we rImpure Lime sto nesDinantian (e arly)Sa nd st o nes, Sh ale sand Limest on es Din antia n Mud ston esand Sa nd st o nes(C ork Gr ou p) De vo nia n Kilto rcan -type Sa nd sto nes De vo nia n Old R edSandstonesGranites & o th erIgneous In trus iv erocksSilurianMetasediments an dVolcanicsOrdovicianMetasediments Ord ov ic ian Vo lca nic s Ca mbr ianMetasedimen ts Pr ec am bria nQuartzites, Gn eis se s& Sc his ts Pr ec am bria n Ma rble s IE GS I G roun dwater D ata Ireland Legend An Roin Com hshaoil,Aeráide agus CumarsáideDepartment pf t he Environment,Cli mate and Communic ati ons Sn ap s ho t D ate : A u gu s t 1 8 , 20 2 6 Tail te E ireann© Tai lte Ei reann Ordnance /Gov ernment of Ireland© Geologic al Surv ey Ireland/Governm ent of I reland REC E I V E D : 2 5 / 0 8 / 2 0 2 6 Geo logical Survey Irelan d © Tailte É ireann | Tailt e É ireann | G eologi cal Su rvey Ire land | Teagas c, EPA & GSI | Env ironmental Pro tec tion Ag ency | Thi s m ap a nd its d a ta m a y no t b e u se d o r r ep ro d uc ed fo r co mm er ci al pu rp o se s w ith o ut th e p ri or w ri tten p er mi ssi on o f C o p yri gh t h ol d ers . Thi s m ap is a u se r g en e ra ted sta tic o u tpu t fro m a n In ter ne t ma p pi n g s ite an d is fo r g en e ra l re fe ren c e o n ly. Da ta l a ye rs th at a p pe a r o n th is m a p m ay or m a y n ot b e a cc ur ate , cu rre n t, o r o the rw i se r el ia b le . µ Map C e nt re C o ordi n ates (IT M) 6 85 ,7 26 8 14 ,90 7 IE_GSI_Str uct ural_Sy m ...Dip o f b edd ing o rmain folia tio n, oldGSI d ataFirst f olia tio n pa ra llelto b ed ding Foliat io n tr en d, T hor rand Ro ss es Gr anite s Ho rizon ta l Be dd ing Str ike a nd d ip ofbedding, r igh t w ay up Str ike a nd d ip ofbedding, w a y upunknownStrike a nd d ip of fir stfoliationStrike a nd d ip ofoverturned b edd ing Str ike a nd d ip ofsecond folia tio nStrike a nd d ip of th irdfoliationStrike a nd p lun ge o ffirst ge ner ation fo ldaxisStrike a nd p lun ge o fsecond g en era tionfold axisStrike a nd p lun ge o fthird g ene ra tio n foldaxisStrike o f v er tic a lbedding/fo liation Str ike o f v er tic a l firs tfoliation Be dr oc k O utcr op s IE_GSI_Ge ologica l_Lin... An ticlin al Ax is An t ifo rma l a xis Aq uifer Bo un da ry Ar ea Co al se am Dyk e Fau lt Gho st Lin e Gon iatite mar ineband (R 1-R 4)Litholo gical b oun da ryoffshore Metad oler ite sh ee t,mainly sillsPaleogene/ Te rtiar yDyke Sy n clin al Axis Sy n fo rma l a xis Te cton ic Slid e, b ar bson h ang ing -w all Thin s tratig rap hic alunit, d iag ra mmat icThrust, ba rb s onhanging-wa ll s ide Tu ff b an d Un co nfor mity, do tson you nge r s ide X-Sec tion IE GS I G roun dwater D ata Ireland Legend An Roin Com hshaoil,Aeráide agus CumarsáideDepartment pf t he Environment,Cli mate and Communic ati ons Sn ap s ho t D ate : A u gu s t 1 8 , 20 2 6 Tail te E ireann© Tai lte Ei reann Ordnance /Gov ernment of Ireland© Geologic al Surv ey Ireland/Governm ent of I reland REC E I V E D : 2 5 / 0 8 / 2 0 2 6 Geo logical Survey Irelan d © Tailte É ireann | Tailt e É ireann | G eologi cal Su rvey Ire land | Teagas c, EPA & GSI | Env ironmental Pro tec tion Ag ency | Thi s m ap a nd its d a ta m a y no t b e u se d o r r ep ro d uc ed fo r co mm er ci al pu rp o se s w ith o ut th e p ri or w ri tten p er mi ssi on o f C o p yri gh t h ol d ers . Thi s m ap is a u se r g en e ra ted sta tic o u tpu t fro m a n In ter ne t ma p pi n g s ite an d is fo r g en e ra l re fe ren c e o n ly. Da ta l a ye rs th at a p pe a r o n th is m a p m ay or m a y n ot b e a cc ur ate , cu rre n t, o r o the rw i se r el ia b le . µ Map C e nt re C o ordi n ates (IT M) 6 83 ,9 48 8 14 ,85 1 IE GS I G roun dwater D ata Ireland Legend An Roin Com hshaoil,Aeráide agus CumarsáideDepartment pf t he Environment,Cli mate and Communic ati ons Sn ap s ho t D ate : A u gu s t 1 8 , 20 2 6 Tail te E ireann© Tai lte Ei reann Ordnance /Gov ernment of Ireland© Geologic al Surv ey Ireland/Governm ent of I reland REC E I V E D : 2 5 / 0 8 / 2 0 2 6 Geo logical Survey Irelan d © Tailte É ireann | Tailt e É ireann | G eologi cal Su rvey Ire land | Teagas c, EPA & GSI | Env ironmental Pro tec tion Ag ency | Thi s m ap a nd its d a ta m a y no t b e u se d o r r ep ro d uc ed fo r co mm er ci al pu rp o se s w ith o ut th e p ri or w ri tten p er mi ssi on o f C o p yri gh t h ol d ers . Thi s m ap is a u se r g en e ra ted sta tic o u tpu t fro m a n In ter ne t ma p pi n g s ite an d is fo r g en e ra l re fe ren c e o n ly. Da ta l a ye rs th at a p pe a r o n th is m a p m ay or m a y n ot b e a cc ur ate , cu rre n t, o r o the rw i se r el ia b le . µ Map C e nt re C o ordi n ates (IT M) 6 83 ,9 48 8 14 ,85 1 IE_GSI_Gr oundw at er_V...Ro ck at or n earSurface o r Kar st Extre me Hig h Mode ra t e Low Water IE GS I G roun dwater D ata Ireland Legend An Roin Com hshaoil,Aeráide agus CumarsáideDepartment pf t he Environment,Cli mate and Communic ati ons Sn ap s ho t D ate : A u gu s t 1 8 , 20 2 6 Tail te E ireann© Tai lte Ei reann Ordnance /Gov ernment of Ireland© Geologic al Surv ey Ireland/Governm ent of I reland REC E I V E D : 2 5 / 0 8 / 2 0 2 6 Trial Hole Sub-surface holes under test REC E I V E D : 2 5 / 0 8 / 2 0 2 6 Surface test holes under test Test holes Test holes REC E I V E D : 2 5 / 0 8 / 2 0 2 6 35 Environmental Protection Agency | Code of Practice : Domestic Waste Water Treatment Systems (Population Equivalent ≤ 10) 7.1 Septic Tanks All septic tanks must comply with the requirements of the relevant parts of I.S. EN 12566; Part 1 for prefabricated septic tanks and Part 4 for septic tanks assembled on site from prefabricated kits. All compliant septic tanks must be installed in accordance with the manufacturer’s instructions. A plan and section of a typical septic tank and percolation area layout are given in Figure 7.1. Figure 7.1: Plan and section of a typical septic tank system Dwelling 7m (min) 10m (min) 18m (max)Percolation Area Distribution Device Septic Tank Manhole (change in direction & inspection) 2m 2.5m c/c Vent Stack Vents 100mm 100mm Manhole Ground Level Geotextile Membrane Gravel 2m (min) 2.50m (min c/c) 550mm 300mm minimum 100mm - 110mm pipe with 8mm holes at 4, 6 and 8 o’clock at 75mm centres A A A A REC E I V E D : 2 5 / 0 8 / 2 0 2 6 40 Environmental Protection Agency | Code of Practice : Domestic Waste Water Treatment Systems (Population Equivalent ≤ 10) Figure 7.4: Section of a typical raised/mounded percolation area following a conventional septic tank Base of the Percolation Trench Unsaturated Undisturbed Subsoil Ground Level Geotextile Membrane 300mm 850mm 300mm 100mm 150mm Percolation Pipe 500mm 2m (distance between trenches) Top of “Mound” Gravel 1,200mm or 2,000mm minimum above water table and/or bedrock depending on the groundwater protection response (see Table 6.3) REC E I V E D : 2 5 / 0 8 / 2 0 2 6 55 Environmental Protection Agency | Code of Practice : Domestic Waste Water Treatment Systems (Population Equivalent ≤ 10) 9. SECONDARY PACKAGED WASTE WATER TREATMENT SYSTEMS RECEIVING RAW WASTE WATER In recent years, many types of secondary packaged treatment systems have come on the Irish market. These may offer solutions for the treatment of domestic waste water, particularly in situations where septic tanks and percolation areas are inappropriate but the site has percolation values between 3 and 90. Such packaged waste water treatment systems treat raw waste water using bespoke media and mechanical parts to provide the conditions for secondary treatment. Such systems are required to meet the treatment standards of 20 : 30 : 20 (mg/l) for BOD5, suspended solids and ammonium nitrogen (NH4-N). They also reduce concentrations of microbial pathogens and provide partial nitrification. These systems must meet SR 66 and I.S. EN 12566 Part 3 standards. Confirmation of testing and compliance of performance with SR 66 should be checked. Where ground discharge is proposed, a secondary packaged waste water treatment system will require a polishing filter, low-pressure pipe distribution system or drip dispersal system, which will allow for further treatment of the waste water and will also convey the treated waste water to ground (see Chapter 10, especially Table 10.1, for infiltration/treatment area design). Although all systems tested to standard I.S. EN 12566 Part 3 are treated similarly in terms of use, level of treatment and functionality, each individual system should be checked to ensure that it matches the infiltration/treatment area design for a site. A typical layout for the treatment of waste water using any secondary packaged waste water treatment system that must meet these requirements is illustrated in Figure 9.1. Figure 9.1: Example of a typical packaged system and polishing filter system If the treated effluent is to be discharged to surface water, the required effluent quality will be dictated by the conditions of a water pollution discharge licence and tertiary treatment may be required. Many systems are available on the market, including the following generic treatment types: \biological/submerged aerated filters (BAFs/SAFs); \rotating biological contactors (RBCs); Manhole (change in direction) Dwelling Packaged Treatment System 7m (min) 10m (min) 10m (max) Soil/Sand Polishing Filter (gravity fed) Power Cable Distribution Box Manholes REC E I V E D : 2 5 / 0 8 / 2 0 2 6 REC E I V E D : 2 5 / 0 8 / 2 0 2 6 REC E I V E D : 2 5 / 0 8 / 2 0 2 6 REC E I V E D : 2 5 / 0 8 / 2 0 2 6 REC E I V E D : 2 5 / 0 8 / 2 0 2 6 REC E I V E D : 2 5 / 0 8 / 2 0 2 6 REC E I V E D : 2 5 / 0 8 / 2 0 2 6 REC E I V E D : 2 5 / 0 8 / 2 0 2 6 Winter High Water Table Level Top of percolation area = 126.00 Invert Level of Percolation Pipes = 125.60 Proposed Dwelling Proposed FFL = 125.80 1. 5 5 6 124.75 124.75 125.7 5 125 126.75 127.75 126 125. 2 5 127 126.2 5 125.5 128.25 127.25 126.5 127.5 124.924 124.985 125.071 125.099 125.131 125.170 125.238 126.173 125.759 125.409 125.168 125.668 126.395 126.802 127.911 127.785 127.468 126.727 125.940 125.294 125.036 124.961 124.893 124.919 124.762 124.822 124.832 124.668 124.788 124 . 8 1 0 123.919 124.205 124.418 125.306 EP EP 125.887 125.706 125.428 125.207 125.196 Neighbouring Dwelling 110KVA Power Lines LOCATION OF SITE NOTICE Proposed private well for water Drive Stormwater to soakpit Drive Existing mature boundary hedgerow & trees FFL 125.800 Proposed timber boundary fence, trees and native hedgerow as per landscaping plan A B C D C D E A B Lawn Lawn Lawn Wastewater treatment system as per attached Site Characterisation report and in compliance with EPA requirements C C REVISIONS DescriptionDateNo. Date: Dwg No: Scale: Drawn: Project Title: Professional: Client: 3. Contours are at .25m intervals Mercator Co-ordinate reference system 2. 50m sq grid relative to Irish Transverse Malin Head 1. All levels are relative to Ordnance Datum NOTES: As Built Surveys GPS Surveys Setting OutLegal Mapping Measured Building Surveys Topographical Surveys RICS Condition Reports Site Suitability For Waste Water Treatment Assigned Certifier Services Market Square, Castleblayney, Monaghan, Ireland Tel: 042 9740671 Mobile: 087 6640932 / 087 7633025 Website: www.horizon-group.ie H rizon GROUP WM 119.200 TP TC 118.486 TR SIGN 112.037 107.216 PMH101.408 PLR POST MH 103.163 LP IL99.337 IC 98.337 GC 95.563 GAS 95.804 GY 96.697 FFL 97.269 FH 97.632 FSTN EB 99.560 EC 99.400 EP DP BOX 103.268 LINE TYPE LEGEND Boundary Building Bank Top Bank Bottom Channel Fence Kerb Railing Path Verge Overhead Electricity Line Road Edge Surface Change Step Vegetation Line Verge Telecom Cover Wall LINE TYPE LEGEND GATE Box Downpipe Electricity Pole Gate Gully Gas Valve Gas Cover Finished Floor Level Electricity Cover Manhole Cover Ridge Spot Level Sign Electricity Box Fire Hydrant Free Station Inspection Cover Invert Level Lamp Post Manhole Post Pillar Telegraph pole Telecom Cover Tree Water Meter A3 TD 1/300 Proposed Percolation Area Monaghan Co Co Peter Daly 01/001 18/08/26 REC E I V E D : 2 5 / 0 8 / 2 0 2 6