Water Framework Directive. Groundwater Monitoring Programme. Site Information. Kinvara Springs

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1 Water Framework Directive Groundwater Monitoring Programme Site Information Kinvara Springs ImagePath1: Kinvara Springs\IE_WE_G_07_015_a_Sp ring.jpg Kinvara Springs is a set of springs in the intertidal zone at Kinvara Bay, and part of the same groundwater flow system that supplies the Kinvara PWS boreholes. August 2011 Galway

2 Site Name: RBD: Site Use: Kinvara Springs WRBD Easting: Northing: Monitoring Only Hydrometric Area: 30 Townland: Ownership: Water Quality Monitoring Network: Dungory West Galway Co. Co. SITE INFORMATION County: EU Reporting Code: GWB Name: GWB Code: Galway IE_WE_G_0002_07_015 Kinvara-Gort turloughs IE_WE_G_0002 Drinking Water Code: Water Level Monitoring Network: Level Surveillance Operational (Point) Operational (Diffuse) Y N Y N Flow N Site Comments: Kinvara Springs is a set of springs in the intertidal zone at Kinvara Bay. The site is located in a karstified aquifer. This site is included in the groundwater surface water interactions monitoring network. Location and Access Information: SITE DIRECTIONS Located in Kinvara Bay, approximately 100m to the southwest of Dungory Castle. The springs rise in the intertidal zone. The sample is to be taken directly from the spring source and at low tide where possible. Additional Comments: Monitoring Point Type: Borehole Log Available: Top of Casing (m agl): Spring WELL INFORMATION Abstraction Rate (m³/d): 0 Ground Elevation (m OD): 0 Total Drilled Depth (m bgl): n/a Depth to Bedrock (m bgl): Upper Casing Diameter (mm): Lower Casing Diameter (mm): Final Borehole Depth (m): Upper Casing Bottom Depth (m bgl) : Lower Casing Bottom Depth (m bgl): Screen Interval (m bgl): Grout Type (cement,bentonite): Screen Type (PVC,Steel,other): Screen Slot Size (mm): Grouted above (m bgl): Grout Volume Injected (m³): Gravel Pack Interval (m bgl): Potential Yield (m³/day): Gravel Pack Volume (m³): Open Hole Interval (m bgl): Specific Capacity (m³/d/m): Comments on Monitoring Site: Static Water Level (m bgl): Scheme Name: Source Report Info: Number of Abstraction Points in the Scheme: Source Report Available N Scheme Summary: Page 2 of 5

3 HYDROGEOLOGY GEOLOGY Soil: Subsoil: Bedrock: Deep well drained mineral (AminDW) Tills (diamictons) (TDSs) Devonian Old Red Sandstones Subsoil Permeability: n/a HYDROGEOLOGY ZONE OF CONTRIBUTION Aquifer Category: Estimated ZOC Size (km²): ZOC Delineation Comments: Vulnerability Pl at Monitoring Extreme Flow Regime: Poorly site: productive ZOC Delineated By: Tobin (JD) Recharge Est Recharge (mm/yr): Estimate (mm/yr): Topographic catchment of springs and tracer testing information available from the GSI. Largely the same ZOC as the Kinvara PWS borehole, as the spring and the borehole are part of the same groundwater flow system. 304 Groundwater Vulnerability within ZOC (% area): Extreme (X) Extreme (E) High Moderate Low High to Low 0.01 Unclassified 1.48 Hydrochemical Signature: Alkalinity (mg/l HCO3): Hardness (mg/l CaCO3): Conductivity (us/cm): Monitoring Record Period: Pressure (e.g., Nitrates, Phosphates, Abstractions): Average: 290 Average: 424 Average: 1007 From: 2007 Ca-HCO3 Diffuse Range: Range: Range: To: 2010 HYDROCHEMISTRY Additional Water Chemistry Information: RISK ASSESSMENT Typical Contaminants: During the monitoring period: The average nitrate concentration was 7 mg/l NO3 and the maximum nitrate concentration was 16 mg/l NO3. The average ammonium concentration was 0.03 mg/l N and the maximum ammonium concentration was 0.06 mg/l N. The average molybdate reductive phosphorus (MRP) concentration was mg/l P and the maximum MRP concentration was mg/l P. The average chloride concentration was mg/l Cl and the maximum chloride concentration was 2017 mg/l Cl. Phosphate Risk Category: At risk, high confidence GWB Status: Poor Impact Potential within ZOC (% area): Extreme: 0.00 High: Moderate: Low: Negligible: OTHER INFORMATION Page 3 of 5

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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 Downgradient Distances General Downgradient 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, Rkd, 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 Date: Prepared by CDM (HM) Date: Feb 2011 Prepared by Date: Prepared by Date: Prepared by Date: Page 5 of 5

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