Water Framework Directive. Groundwater Monitoring Programme. Site Information. Kiltrough PWS
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1 Water Framework Directive Groundwater Monitoring Programme Site Information Kiltrough PWS ImagePath1: Kiltrough PWS\17_009_Kiltough_P1_SiteLo cation.jpg This monitoring point is a well that is part of the Kiltrough public water supply. There are two wells with an average total abstraction rate of just under 3,000 m³/d. County Council have prepared a source protection scheme report for this source. August 2011
2 Site Name: RBD: Site Use: Kiltrough PWS ERBD Easting: Northing: Drinking Water (PWS) Hydrometric Area: 8 Townland: Ownership: Water Quality Monitoring Network: KILTROUGH Co Co Surrounded by agricultural land SITE INFORMATION County: EU Reporting Code: GWB Name: GWB Code: IE_EA_G_016_17_009 Bettystown IE_EA_G_016 Drinking Water Code: Water Level Monitoring Network: Level Surveillance Operational (Point) Operational (Diffuse) Y N N N Flow N Site Comments: Location and Access Information: SITE DIRECTIONS From Duleek take the R152 towards Drogheda. After about 3 take right (in front of cement factory) and continue straight over the M1 motorway, pass the R108 crossing and drive for about 2.5. The entrance to the site is on the right-hand side (in direction of water tower) shortly before the roundabout on N1. The first well is situated directly behind the gate and the second is half way through to the water tower. Additional Comments: Monitoring Point Type: Borehole Log Available: BH Y WELL INFORMATION Abstraction Rate (m³/d): 2750 Ground Elevation (m OD): Total Drilled Depth (m bgl): 123 Depth to Bedrock (m bgl): 6 Top of Casing (m agl): Upper Casing Diameter (mm): 300 Lower Casing Diameter (mm): 200 Final Borehole Depth (m): Upper Casing Bottom Depth (m bgl) : 6 Lower Casing Bottom Depth (m bgl): Screen Interval (m bgl): 22 to 117 Grout Type (cement,bentonite): Gravel Pack Interval (m bgl): Potential Yield (m³/day): Specific Capacity (m³/d/m): Static Water Level (m bgl): Screen Type (PVC,Steel,other): Comments on Monitoring Site: PVC (boode) Screen Slot Size (mm): 3 Cement Grouted above (m bgl): 19 Grout Volume Injected (m³): Gravel Pack Volume (m³): Open Hole Interval (m bgl): Borehole logs are available for BH1 and BH2. The details shown here are for BH1. The reported potential yield of BH1 is 2,028 m³/d and BH2 is 2,100m³/d. Scheme Name: Source Report Info: Kitrough PWS Number of Abstraction Points in the Scheme: County Council have prepared a source report for this scheme. 2 Source Report Available Y Scheme Summary: Kiltrough PWS is a new water supply scheme with two boreholes. The pumps run continuously in both boreholes, and water is pumped to an onsite reservoir Page 2 of 5
3 HYDROGEOLOGY GEOLOGY Soil: Subsoil: Bedrock: Alluviums (AlluvMIN) Alluvium (A) Dinantian Upper Impure Limestones Subsoil Permeability: Low HYDROGEOLOGY ZONE OF CONTRIBUTION Aquifer Category: Estimated ZOC Size (²): ZOC Delineation Comments: Vulnerability Lm at Monitoring Low Flow Regime: Productive site: fissured bedrock 13.2 ZOC Delineated By: TOBIN Recharge Est Recharge (mm/yr): Estimate (mm/yr): A ZOC area was delineated based on an abstraction rate, recharge and topography. It is based on 150% of the abstraction rate to account for increases in demand and uncertainties in the delineation process. 138 Groundwater Vulnerability within ZOC (% area): Extreme (X) 6.62 Extreme (E) 5.44 High 5.51 Moderate 18.2 Low High to Low 5 Unclassified 0 Hydrochemical Signature: Ca-HCO3 HYDROCHEMISTRY Few data available. Low nitrates suggest denitrification in a low vulnerability setting. Alkalinity (mg/l HCO3): Hardness (mg/l CaCO3): Conductivity (us/cm): Monitoring Record Period: Pressure (e.g., Nitrates, Phosphates, ): Average: Average: Average: From: Range: Range: Range: To:, Diffuse Additional Water Chemistry Information: RISK ASSESSMENT Typical Contaminants: Phosphorus Risk Category: At risk, high confidence GWB Status: Poor Impact Potential within ZOC (% area): Extreme: 0.00 High: Moderate: 5.80 Low: Negligible: OTHER INFORMATION Well is located at Kiltrough Water Tower site. Kiltrough PWS is a new water supply scheme, drilling was carried out in 2006 as part of East /South and Drogheda Water Improvement Scheme. Supply from Kiltrough came online in 2007/ Steel casing and PVC slotted screen. Page 3 of 5
4 Site Location Well Head Sampling point Page 4 of 5
5 Data Summary Sheet - July 2011 Disclaimer: The data in this document are based on the best available information and understanding at time of writing. Neither the Environmental Protection Agency, nor the individual bodies supplying data for this document and accompanying maps will be responsible for any loss or damage from the use or interpretation of these data. Rock Unit Geology Map: GSI, 2009 Aquifer Type Map: GSI, 2009 Groundwater Vulnerability Map: GSI, 2009 Soils & Subsoils Type: Teagasc, 2007 Recharge Map: GSI, 2009 Impact Potential Map: EPA, 2009 Risk Assessment Map: EPA WFD Risk Assessment, 2006 Groundwater Body Status: EPA WFD Status Assessment, 2008 Water Quality Data: EPA WFD Monitoring, 2008 Groundwater Threshold Values Groundwater threshold values for selected parameters: Nitrate - General Chemical Test/ Drinking Water Test (37.5 mg/i N03) Ammonium - Drinking Water Test (0.175 mg/i N) / Surface Water Test (0.065 mg/l N) Molybdate Reactive Phosphorus (MRP) - Surface Water Test (0.035 mg/i P) Chloride -Saline/Intrusive Test (24 mg/i) / Drinking Water Test (175 mg/i Cl) Electrical Conductivity -Saline/Intrusive Test (800 µs/cm) / Drinking Water Test (1,875 µs/cm) Further information on groundwater threshold values is contained in the Groundwater Regulations (S.I. No.9 of 2010). General gradient Distances General gradient Distances (XL) applied to boreholes sourced in bedrock aquifers are constrained to estimate approximate limits based on data at the GSl. ln some cases they may be higher or lower depending on local conditions. Rk,, Lk Lm Ll, PI 225 m 150 m 60 m It is assumed that groundwater downgradient of a spring cannot flow back up to the spring, however a precautionary 30m buffer is generally applied which allows for instances where pumping under dry weather periods may induce a drawdown or where the ground may be sloping toward the spring from the downgradient side. Version 0: Version 1: Version 2: Version 3: Version 4: Prepared by TOBIN Date: Prepared by CDM (HM) Date: Mar 2011 Prepared by Date: Prepared by Date: Prepared by Date: Page 5 of 5
6 Nanny [] Mosney Location Map for Kiltrough PWS
7 Lm Pl Pl Lm Nanny [] Pu Pl Lm Pl Pl Aquifer Category Map for Kiltrough PWS Lake Borehole Lm Pu Fault Enclosed Depression Pl
8 Nanny [] Mosney Bedrock Map for Kiltrough PWS Lake Dinantian Pure Bedded Limestones Namurian Undifferentiated Silurian Metasediments and Volcanics Borehole Dinantian Upper Impure Limestones Ordovician Metasediments Fault Enclosed Depression Granites & other Igneous Intrusive rocks Ordovician Volcanics
9 Nanny [] Mosney Groundwater Vulnerability Map for Kiltrough PWS Lake E (Rock near surface or Karst) M (Moderate) Water E (Extreme) L (Low) No Data H (High) HL (unmapped - High to Low)
10 Subsoils Map for Kiltrough PWS Nanny [] Mosney Alluvium Bedrock outcrop or subcrop Irish Sea Till derived from Lower Palaeozoic sandstones and shales Made ground Cutover raised peat Karstified bedrock outcrop or subcrop Till derived from Lower Palaeozoic sanstones and shales Water Gravels derived from Lower Palaeozoic sandstones and shales Lacustrine sediments Till derived from limestones Lake Gravels derived from limestones Windblown sands in dunes Till derived from Namurian sandstones and shales
11 Soils Map for Kiltrough PWS Nanny [] Mosney Acid Deep Well Drained Mineral Acid Shallow/Rocky/Peaty Mineral Basic Shallow Poorly Drained Mineral Aeolian (Undifferentiated) Acid Deep Poorly Drained Mineral Basic Deep Well Drained Mineral Cutover/Cutaway Peat Made Acid Shallow Well Drained Mineral Basic Deep Poorly Drained Mineral Mineral Alluvium Water Lake Acid Shallow Poorly Drained Mineral Basic Shallow Well Drained Mineral Lacustrine
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