Nitrate vulnerable zone designation 2012 (Groundwater)

Mae fersiwn Cymraeg o’r ddogfen hon ar gael A Welsh version of this document is also available Version 1.1, revised 27 June 2012

Evidence of Groundwater Water Nitrate Pollution 2012 INTRODUCTION

This document is intended to provide a summary of the evidence used in assessing the need for nitrate vulnerable zone (NVZ) designation under the Nitrates Directive reference(91/676/EEC of 12th Decmeber 1991). A full description of the methods used is given in the detailed methodologies for Surface Water, Groundwater and Eutrophic Water reports which are available from the Defra and Welsh Government websites. These methods were developed under the guidance of a Review Group convened by the Defra and the Welsh Government which included representatives from the farming and water industries as well as independent academic experts.

NVZ areas are designated based on a combination of both monitored water quality data and modelled nitrogen loadings that are based on the agricultural census and other data.

The concentration data is presented as milligrams of Nitrogen per litre. Please note 50 mg per litre of Nitrate is equivalent to 11.3 mg per litre as Nitrogen (N). Monitoring sites which exceed the concentration of 11.3 mg N/l set by the Nitrates Directive may lead to designation of all land draining to this point.

Note that for land already designated as a groundwater NVZ prior to this assessment, the land will remain designated even if the 95%ile concentration is now below 11.3 mg N/l. At least two cycles of low Nitrate concentrations are needed to show a sustained decrease that would then be considered for removal from NVZ designation.

For each NVZ area, monitoring data in combination with information on land-use indicate that concentrations of nitrates in one or more groundwaters are likely to exceed the level set out in the EU Nitrates Directive. Agricultural sources are likely to make a significant contribution to the observed or expected concentration of nitrate. Hence the land area draining to these groundwaters has been identified for designation as a Nitrate Vulnerable Zone.

ID of designated NVZ:16

Map of the designated area.

Description of the boundary

Surface Water Zone designations are applied at a waterbody scale, for groundwater zones, other factors such as geology need to be taken into account. Physical boundaries influencing groundwater NVZs delineation have been defined based on expert discussion at local level. The following represents a selection of the types of boundaries that have been used to delineate the NVZs and determine the land draining to a polluted groundwater.

● Geological boundaries such as faults and geological contacts.● Surface water catchment boundaries.● Groundwater level contours.● High permeability drift outcrops.● Low permeability drift outcrops.● Rivers, acting as groundwater catchment divides.● Coastlines.● Solution features.

For NVZ area 16 the boundary is based on;

Castle Cary NVZ (ID 16) The boundaries of this NVZ have been delineated using the outcrop of the inferior oolite limestone contacts with the Whitby mudstone to the west and the Fullers Earth clay formation to the east. The northern and southern limits of the NVZ are delineated using surface water catchment boundaries that drain surface water runoff from the limestone.

ID of monitoring site(s):

6002GW07, 60030003, 60260001, 60260002, 60260007, 60270001

Previously designated area, new area or new area adjacent to previously designated area: Previously designated area

Total new area designated (Km2): 32.05

Monitored Nitrate data for sites in zone ID: 16

For the 2012 designations monitoring data was analysed where available for the years 1980 - 2009. Where sufficient data was available results were projected to give a predicted concentration in 2027. For the earlier 2008 designation, monitoring data was analysed to 2006 and trend predicted to 2021. The results of the analysis were then compared to the standard of a 95%ile value of 11.3 mg N /l. See section 3 of the Groundwater Methodology report for more details.

The following tables summarise the nitrate concentrations for monitoring sites that either exceed the threshold or show increasing trend for nitrate. Data for these and other nearby sites are presented in Appendix A

This area was designated in 2008.

Results for 2008 monitoring data.

Monitoring Site ID 6002GW07Easting 366300Northing 121100Total Inorganic Nitrogen concentration 95%ile (mg/l)

11.19

Future predicted 95%ile Total Inorganic Nitrogen estimate (mg/l)

12.97

Trend (upward, downward, stagnation): Upward

Results for 2012 monitoring data.

Monitoring Site ID 6002GW07Easting 366300Northing 121100Total Inorganic Nitrogen concentration 95%ile (mg/l)

8.91

Future predicted 95%ile Total Inorganic Nitrogen estimate (mg/l)

8.91

Trend (upward, downward, stagnation): Stagnation

Land Use Model results

Urban and agricultural load were included in the assessment to identify if agriculture provides a main contribution of nitrate to the groundwater.

The following maps and associated figures indicate the annual average concentration of nitrate from agriculture contained in soil water. The figures are derived from farm scale research undertaken for Defra and are extrapolated based on farming land-use data for the land area covered by this report obtained in 2010 and long-term average rainfall based, using a model called NEAP-N developed by ADAS. The maps indicate those areas within the catchment with higher or lower levels of potential agricultural nitrate leaching to the groundwater.

Map of agricultural load in the designated area. Load score is shown on 1km2 grid.

Map of urban load in the designated area. Load score is shown on 1km2 grid.

Additional Lines of evidence

Advice was sought from local Environment Agency staff to identify any additional data that could be used in the risk model to improve the robustness of the decision making process. Examples include the location of point sources (e.g. industrial or septic discharges), monitoring data from different groundwater bodies and monitoring data from related surface waters. See section 6 of the Groundwater Methodology report for more details.

For this area, no lines of evidence have been modified from local Environment Agency staff.

Appendix A: Environment Agency monitoring data

This appendix presents historical concentration data at every monitoring site. For the 2012 designation, samples collected before 1980 were excluded because they may not be indicative of present day groundwater quality.

Monitoring point ID Easting Northing Date Nitrate (mg N / l) 6002GW07 366300 121100 01/07/2002 4.36002GW07 366300 121100 27/11/2003 8.26002GW07 366300 121100 27/02/2004 9.56002GW07 366300 121100 12/07/2004 7.26002GW07 366300 121100 27/09/2004 5.76002GW07 366300 121100 02/12/2004 7.96002GW07 366300 121100 16/02/2005 9.86002GW07 366300 121100 25/04/2005 96002GW07 366300 121100 11/08/2005 6.96002GW07 366300 121100 02/11/2005 6.96002GW07 366300 121100 27/07/2006 7.36002GW07 366300 121100 27/07/2006 7.26002GW07 366300 121100 26/10/2006 11.76002GW07 366300 121100 14/08/2008 7.86002GW07 366300 121100 07/11/2008 8.86002GW07 366300 121100 05/02/2009 9.36002GW07 366300 121100 24/04/2009 8.36002GW07 366300 121100 24/07/2009 7.66002GW07 366300 121100 23/10/2009 8.160030003 367300 132900 10/04/1985 1.860030003 367300 132900 13/02/1986 1.860030003 367300 132900 22/05/1986 2.360030003 367300 132900 10/10/1986 1.960030003 367300 132900 23/10/1986 260030003 367300 132900 06/11/1986 260030003 367300 132900 20/11/1986 1.960030003 367300 132900 02/12/1986 260030003 367300 132900 18/12/1986 2.260030003 367300 132900 22/01/1987 2.360030003 367300 132900 29/01/1987 260030003 367300 132900 12/02/1987 2.260030003 367300 132900 26/02/1987 2.260030003 367300 132900 11/03/1987 1.760030003 367300 132900 07/04/1987 2.260030003 367300 132900 29/07/1987 260030003 367300 132900 05/10/1988 1.760030003 367300 132900 19/10/1988 2.160030003 367300 132900 02/11/1988 1.960030003 367300 132900 29/12/1988 1.860030003 367300 132900 11/01/1989 1.660030003 367300 132900 08/02/1989 1.860030003 367300 132900 08/03/1989 1.660030003 367300 132900 22/03/1989 1.760030003 367300 132900 19/04/1989 1.660030003 367300 132900 03/05/1989 260030003 367300 132900 17/05/1989 1.960030003 367300 132900 14/06/1989 260030003 367300 132900 28/06/1989 1.960030003 367300 132900 12/07/1989 2.160030003 367300 132900 23/08/1989 1.960030003 367300 132900 06/09/1989 1.4

60030003 367300 132900 04/10/1989 260030003 367300 132900 01/11/1989 2.160030003 367300 132900 15/11/1989 260030003 367300 132900 29/11/1989 1.960030003 367300 132900 13/12/1989 260030003 367300 132900 16/01/1990 2.360030003 367300 132900 30/01/1990 4.660030003 367300 132900 27/02/1990 2.560030003 367300 132900 06/03/1990 2.760030003 367300 132900 13/03/1990 2.160030003 367300 132900 20/03/1990 2.360030003 367300 132900 03/04/1990 2.460030003 367300 132900 10/04/1990 2.260030003 367300 132900 17/04/1990 2.160030003 367300 132900 01/05/1990 2.560030003 367300 132900 08/05/1990 2.360030003 367300 132900 15/05/1990 2.560030003 367300 132900 29/05/1990 2.460030003 367300 132900 12/06/1990 2.460030003 367300 132900 19/06/1990 2.460030003 367300 132900 26/06/1990 2.360030003 367300 132900 03/07/1990 2.460030003 367300 132900 10/07/1990 2.660030003 367300 132900 17/07/1990 2.360030003 367300 132900 24/07/1990 2.560030003 367300 132900 31/07/1990 2.560030003 367300 132900 07/08/1990 2.360030003 367300 132900 14/08/1990 2.560030003 367300 132900 21/08/1990 2.260030003 367300 132900 28/08/1990 2.360030003 367300 132900 04/09/1990 2.460030003 367300 132900 11/09/1990 2.360030003 367300 132900 18/09/1990 2.260030003 367300 132900 25/09/1990 2.560030003 367300 132900 02/10/1990 2.560030003 367300 132900 09/10/1990 2.360030003 367300 132900 16/10/1990 2.260030003 367300 132900 23/10/1990 2.160030003 367300 132900 29/10/1990 2.360030003 367300 132900 05/11/1990 2.560030003 367300 132900 13/11/1990 2.260030003 367300 132900 20/11/1990 2.260030003 367300 132900 27/11/1990 2.160030003 367300 132900 04/12/1990 2.160030003 367300 132900 11/12/1990 2.260030003 367300 132900 18/12/1990 260030003 367300 132900 08/01/1991 2.260030003 367300 132900 22/01/1991 2.160030003 367300 132900 04/02/1991 2.160030003 367300 132900 19/02/1991 2.260030003 367300 132900 05/03/1991 2.360030003 367300 132900 19/03/1991 2.360030003 367300 132900 04/04/1991 2.460030003 367300 132900 19/04/1991 2.360030003 367300 132900 30/04/1991 2.360030003 367300 132900 28/05/1991 1.960030003 367300 132900 16/06/1991 5.860030003 367300 132900 12/07/1991 5.5

60030003 367300 132900 09/08/1991 1.960030003 367300 132900 06/09/1991 260030003 367300 132900 17/09/1991 1.960030003 367300 132900 04/10/1991 1.860030003 367300 132900 15/10/1991 1.860030003 367300 132900 01/11/1991 260030003 367300 132900 12/11/1991 2.160030003 367300 132900 29/11/1991 2.160030003 367300 132900 10/12/1991 1.960030003 367300 132900 07/01/1992 260030003 367300 132900 24/01/1992 1.960030003 367300 132900 04/02/1992 260030003 367300 132900 21/02/1992 1.960030003 367300 132900 03/03/1992 1.860030003 367300 132900 20/03/1992 260030003 367300 132900 31/03/1992 1.960030003 367300 132900 15/04/1992 1.860030003 367300 132900 28/04/1992 260030003 367300 132900 15/05/1992 1.960030003 367300 132900 26/05/1992 260030003 367300 132900 12/06/1992 1.860030003 367300 132900 23/06/1992 1.860030003 367300 132900 10/07/1992 1.860030003 367300 132900 21/07/1992 1.760030003 367300 132900 07/08/1992 1.760030003 367300 132900 01/09/1992 1.660030003 367300 132900 04/09/1992 1.760030003 367300 132900 15/09/1992 1.760030003 367300 132900 29/09/1992 1.860030003 367300 132900 13/10/1992 1.760030003 367300 132900 30/10/1992 1.960030003 367300 132900 10/11/1992 1.760030003 367300 132900 27/11/1992 1.860030003 367300 132900 08/12/1992 1.960030003 367300 132900 05/01/1993 2.160030003 367300 132900 22/01/1993 2.160030003 367300 132900 02/02/1993 2.160030003 367300 132900 02/03/1993 1.960030003 367300 132900 11/03/1993 260030003 367300 132900 19/03/1993 1.760030003 367300 132900 30/03/1993 1.960030003 367300 132900 16/04/1993 2.260030003 367300 132900 27/04/1993 260030003 367300 132900 14/05/1993 2.160030003 367300 132900 11/06/1993 2.260030003 367300 132900 22/06/1993 2.260030003 367300 132900 20/07/1993 2.360030003 367300 132900 06/08/1993 2.560030003 367300 132900 10/08/1993 2.460030003 367300 132900 17/08/1993 260030003 367300 132900 03/09/1993 2.360030003 367300 132900 01/10/1993 260030003 367300 132900 12/10/1993 2.360030003 367300 132900 29/10/1993 2.360030003 367300 132900 09/11/1993 2.360030003 367300 132900 26/11/1993 2.360030003 367300 132900 07/12/1993 2.360030003 367300 132900 20/12/1993 2.2

60030003 367300 132900 04/01/1994 2.360030003 367300 132900 21/01/1994 2.760030003 367300 132900 18/02/1994 2.560030003 367300 132900 01/03/1994 2.560030003 367300 132900 18/03/1994 2.360030003 367300 132900 29/03/1994 2.860030003 367300 132900 15/04/1994 2.860030003 367300 132900 26/04/1994 360030003 367300 132900 13/05/1994 2.660030003 367300 132900 24/05/1994 2.860030003 367300 132900 10/06/1994 2.760030003 367300 132900 21/06/1994 2.560030003 367300 132900 08/07/1994 360030003 367300 132900 19/07/1994 3.160030003 367300 132900 05/08/1994 3.160030003 367300 132900 16/08/1994 3.160030003 367300 132900 02/09/1994 2.960030003 367300 132900 13/09/1994 3.160030003 367300 132900 30/09/1994 2.860030003 367300 132900 11/10/1994 2.960030003 367300 132900 28/10/1994 2.960030003 367300 132900 08/11/1994 2.960030003 367300 132900 25/11/1994 2.960030003 367300 132900 06/12/1994 3.360030003 367300 132900 15/12/1994 2.960030003 367300 132900 03/01/1995 3.160030003 367300 132900 20/01/1995 2.760030003 367300 132900 31/01/1995 3.660030003 367300 132900 17/02/1995 3.360030003 367300 132900 28/02/1995 3.160030003 367300 132900 17/03/1995 360030003 367300 132900 28/03/1995 3.360030003 367300 132900 14/04/1995 3.460030003 367300 132900 25/04/1995 3.460030003 367300 132900 01/05/1995 3.560030003 367300 132900 02/05/1995 3.460030003 367300 132900 12/05/1995 3.660030003 367300 132900 23/05/1995 3.560030003 367300 132900 09/06/1995 3.360030003 367300 132900 20/06/1995 3.660030003 367300 132900 07/07/1995 3.960030003 367300 132900 18/07/1995 3.660030003 367300 132900 04/08/1995 3.460030003 367300 132900 15/08/1995 3.760030003 367300 132900 04/09/1995 3.560030003 367300 132900 26/09/1995 3.360030003 367300 132900 02/01/1996 3.360030003 367300 132900 19/01/1996 3.260030003 367300 132900 30/01/1996 3.360030003 367300 132900 16/02/1996 360030003 367300 132900 27/02/1996 3.260030003 367300 132900 15/03/1996 3.260030003 367300 132900 26/03/1996 360030003 367300 132900 12/04/1996 360030003 367300 132900 23/04/1996 2.860030003 367300 132900 10/05/1996 360030003 367300 132900 21/05/1996 2.860030003 367300 132900 04/06/1996 2.8

60030003 367300 132900 18/06/1996 360260001 366400 121200 22/10/1987 6.860260001 366400 121200 01/12/1987 7.660260001 366400 121200 16/01/1990 7.860260001 366400 121200 01/05/1990 8.360260001 366400 121200 08/05/1990 8.160260001 366400 121200 15/05/1990 8.460260001 366400 121200 22/05/1990 8.160260001 366400 121200 29/05/1990 7.860260001 366400 121200 19/06/1990 7.960260001 366400 121200 03/07/1990 7.560260001 366400 121200 10/07/1990 7.660260001 366400 121200 17/07/1990 7.660260001 366400 121200 24/07/1990 7.460260001 366400 121200 31/07/1990 7.460260001 366400 121200 07/08/1990 7.460260001 366400 121200 11/09/1990 6.960260001 366400 121200 25/09/1990 6.860260001 366400 121200 02/10/1990 6.760260001 366400 121200 09/10/1990 7.460260001 366400 121200 23/10/1990 6.960260001 366400 121200 29/10/1990 6.660260001 366400 121200 05/11/1990 6.960260001 366400 121200 13/11/1990 6.760260001 366400 121200 20/11/1990 6.560260001 366400 121200 27/11/1990 7.260260001 366400 121200 04/12/1990 7.260260001 366400 121200 11/12/1990 7.360260001 366400 121200 18/12/1990 6.860260001 366400 121200 04/02/1991 7.760260001 366400 121200 05/03/1991 860260001 366400 121200 19/03/1991 8.460260001 366400 121200 16/04/1991 8.360260001 366400 121200 30/05/1991 7.760260001 366400 121200 11/06/1991 7.460260001 366400 121200 27/06/1991 7.460260001 366400 121200 09/07/1991 760260001 366400 121200 25/07/1991 7.260260001 366400 121200 06/08/1991 7.360260001 366400 121200 17/09/1991 6.960260001 366400 121200 17/10/1991 6.960260001 366400 121200 29/10/1991 6.460260001 366400 121200 14/11/1991 8.160260001 366400 121200 26/11/1991 7.660260001 366400 121200 29/11/1991 7.260260001 366400 121200 12/12/1991 7.460260001 366400 121200 09/01/1992 8.260260001 366400 121200 06/02/1992 7.360260001 366400 121200 18/02/1992 8.160260001 366400 121200 05/03/1992 7.560260001 366400 121200 17/03/1992 7.560260001 366400 121200 02/04/1992 7.660260001 366400 121200 14/04/1992 8.160260001 366400 121200 30/04/1992 7.660260001 366400 121200 12/05/1992 860260001 366400 121200 28/05/1992 7.260260001 366400 121200 13/10/1994 8.360260001 366400 121200 28/11/1994 8.1

60260001 366400 121200 14/03/1995 8.560260001 366400 121200 25/05/1995 9.560260001 366400 121200 22/06/1995 8.760260001 366400 121200 12/03/1996 9.860260001 366400 121200 25/04/1996 8.960260001 366400 121200 23/05/1996 8.860260001 366400 121200 04/06/1996 9.360260002 366400 121200 23/01/1990 7.860260002 366400 121200 30/01/1990 11.660260002 366400 121200 27/02/1990 8.860260002 366400 121200 06/03/1990 8.760260002 366400 121200 13/03/1990 8.460260002 366400 121200 20/03/1990 7.960260002 366400 121200 10/04/1990 7.860260002 366400 121200 17/04/1990 7.560260002 366400 121200 04/09/1990 6.760260002 366400 121200 16/10/1990 6.260260002 366400 121200 08/01/1991 9.560260002 366400 121200 22/01/1991 9.160260002 366400 121200 19/02/1991 7.460260002 366400 121200 05/03/1991 7.760260002 366400 121200 04/04/1991 860260002 366400 121200 16/04/1991 8.660260002 366400 121200 14/05/1991 7.960260002 366400 121200 11/06/1991 7.660260002 366400 121200 01/10/1991 6.760260002 366400 121200 29/10/1991 6.460260002 366400 121200 21/01/1992 860260002 366400 121200 05/03/1992 7.560260002 366400 121200 02/04/1992 7.560260002 366400 121200 28/05/1992 7.360260007 366800 120100 09/04/1985 11.660260007 366800 120100 13/01/1986 0.560260007 366800 120100 10/06/1986 12.860260007 366800 120100 01/07/1986 5.560260007 366800 120100 08/10/1986 3.860260007 366800 120100 22/10/1986 260260007 366800 120100 04/11/1986 6.560260007 366800 120100 05/11/1986 7.860260007 366800 120100 18/11/1986 10.660260007 366800 120100 25/11/1986 8.460260007 366800 120100 16/12/1986 15.260260007 366800 120100 19/01/1987 3.460260007 366800 120100 26/01/1987 0.760260007 366800 120100 29/01/1987 0.560260007 366800 120100 10/02/1987 7.660260007 366800 120100 24/02/1987 1160260007 366800 120100 10/03/1987 1060260007 366800 120100 24/03/1987 1060260007 366800 120100 06/04/1987 10.860260007 366800 120100 21/04/1987 1.660260007 366800 120100 05/05/1987 7.860260007 366800 120100 19/05/1987 6.860260007 366800 120100 30/06/1987 6.760260007 366800 120100 14/07/1987 2.660260007 366800 120100 29/07/1987 2.360260007 366800 120100 10/08/1987 1.860260007 366800 120100 25/08/1987 1.7

60260007 366800 120100 08/09/1987 2.860260007 366800 120100 08/10/1987 6.660260007 366800 120100 22/10/1987 6.260260007 366800 120100 05/11/1987 4.460260007 366800 120100 19/11/1987 7.260260007 366800 120100 03/12/1987 7.660260007 366800 120100 15/12/1987 3.760260007 366800 120100 02/01/1988 10.560260007 366800 120100 14/01/1988 9.360260007 366800 120100 14/01/1988 1160260007 366800 120100 15/01/1988 12.360260007 366800 120100 22/01/1988 9.560260007 366800 120100 01/02/1988 14.460260007 366800 120100 10/02/1988 14.560260007 366800 120100 22/02/1988 11.460260007 366800 120100 07/03/1988 860260007 366800 120100 10/03/1988 760260007 366800 120100 22/03/1988 14.560260007 366800 120100 24/03/1988 2.160260007 366800 120100 07/04/1988 10.760260007 366800 120100 14/04/1988 7.960260007 366800 120100 09/05/1988 4.760260007 366800 120100 16/05/1988 360260007 366800 120100 15/06/1988 2.760260007 366800 120100 05/10/1988 0.560260007 366800 120100 12/10/1988 960260007 366800 120100 19/10/1988 3.560260007 366800 120100 02/11/1988 0.860260007 366800 120100 29/12/1988 2.460260007 366800 120100 08/02/1989 2.760260007 366800 120100 16/02/1989 3.260260007 366800 120100 28/02/1989 1460260007 366800 120100 28/02/1989 13.960260007 366800 120100 28/02/1989 14.260260007 366800 120100 28/02/1989 13.460260007 366800 120100 02/03/1989 12.860260007 366800 120100 22/03/1989 4.760260007 366800 120100 19/04/1989 0.960260007 366800 120100 08/06/1989 1.260260007 366800 120100 28/06/1989 1.360260007 366800 120100 12/07/1989 2.360260007 366800 120100 26/07/1989 1.960260007 366800 120100 25/08/1989 1.260260007 366800 120100 04/10/1989 0.960260007 366800 120100 15/11/1989 2.160260007 366800 120100 16/01/1990 9.260260007 366800 120100 23/01/1990 3.160260007 366800 120100 30/01/1990 5.960260007 366800 120100 27/02/1990 14.460260007 366800 120100 06/03/1990 1260260007 366800 120100 13/03/1990 8.260260007 366800 120100 20/03/1990 6.960260007 366800 120100 10/04/1990 4.860260007 366800 120100 17/04/1990 3.960260007 366800 120100 01/05/1990 3.860260007 366800 120100 08/05/1990 5.160260007 366800 120100 15/05/1990 3.560260007 366800 120100 22/05/1990 3.7

60260007 366800 120100 29/05/1990 360260007 366800 120100 19/06/1990 2.860260007 366800 120100 03/07/1990 2.860260007 366800 120100 10/07/1990 2.260260007 366800 120100 17/07/1990 1.760260007 366800 120100 24/07/1990 1.860260007 366800 120100 31/07/1990 1.660260007 366800 120100 07/08/1990 1.460260007 366800 120100 14/08/1990 3.660260007 366800 120100 21/08/1990 1.660260007 366800 120100 28/08/1990 1.460260007 366800 120100 04/09/1990 1.560260007 366800 120100 11/09/1990 0.960260007 366800 120100 18/09/1990 1.360260007 366800 120100 25/09/1990 1.260260007 366800 120100 02/10/1990 1.560260007 366800 120100 09/10/1990 1.660260007 366800 120100 16/10/1990 0.960260007 366800 120100 23/10/1990 0.860260007 366800 120100 29/10/1990 1.560260007 366800 120100 06/11/1990 1.360260007 366800 120100 13/11/1990 1.560260007 366800 120100 20/11/1990 4.360260007 366800 120100 27/11/1990 7.960260007 366800 120100 04/12/1990 4.660260007 366800 120100 11/12/1990 5.660260007 366800 120100 18/12/1990 2.760260007 366800 120100 15/01/1991 0.560260007 366800 120100 29/01/1991 9.560260007 366800 120100 12/02/1991 0.560260007 366800 120100 26/02/1991 1.560260007 366800 120100 12/03/1991 0.760260007 366800 120100 26/03/1991 9.760260007 366800 120100 10/04/1991 10.460260007 366800 120100 08/05/1991 0.560260007 366800 120100 05/06/1991 0.560260007 366800 120100 03/07/1991 9.560260007 366800 120100 31/07/1991 2.760260007 366800 120100 28/08/1991 1.960260007 366800 120100 13/09/1991 1.460260007 366800 120100 25/09/1991 1.760260007 366800 120100 11/10/1991 4.760260007 366800 120100 08/11/1991 760260007 366800 120100 20/11/1991 10.760260007 366800 120100 29/11/1991 6.960260007 366800 120100 06/12/1991 7.560260007 366800 120100 03/01/1992 960260007 366800 120100 15/01/1992 7.860260007 366800 120100 17/01/1992 6.660260007 366800 120100 31/01/1992 2.560260007 366800 120100 11/02/1992 1260260007 366800 120100 12/02/1992 1260260007 366800 120100 08/04/1992 1260260007 366800 120100 11/05/1992 9.560260007 366800 120100 22/05/1992 7.360260007 366800 120100 15/06/1992 7.260260007 366800 120100 19/06/1992 7.360260007 366800 120100 29/06/1992 4

60260007 366800 120100 01/07/1992 3.860260007 366800 120100 16/07/1992 3.360260007 366800 120100 17/07/1992 3.460260007 366800 120100 26/08/1992 3.460260007 366800 120100 07/09/1992 660260007 366800 120100 11/09/1992 4.660260007 366800 120100 25/09/1992 960260007 366800 120100 09/10/1992 7.160260007 366800 120100 21/10/1992 3.260260007 366800 120100 06/11/1992 5.760260007 366800 120100 18/11/1992 9.460260007 366800 120100 04/12/1992 14.160260007 366800 120100 13/01/1993 0.460260007 366800 120100 29/01/1993 12.860260007 366800 120100 10/02/1993 8.860260007 366800 120100 05/05/1993 0.660260007 366800 120100 02/06/1993 0.160260007 366800 120100 25/11/1993 12.760260007 366800 120100 10/12/1993 9.560260007 366800 120100 31/12/1993 10.860260007 366800 120100 07/02/1994 11.660260007 366800 120100 22/02/1994 10.260260007 366800 120100 07/03/1994 9.860260007 366800 120100 05/04/1994 11.160260007 366800 120100 29/06/1994 8.560260007 366800 120100 09/09/1994 2.460260007 366800 120100 21/09/1994 2.860260007 366800 120100 07/10/1994 2.560260007 366800 120100 16/02/1995 11.460260007 366800 120100 10/07/1995 7.160260007 366800 120100 26/07/1995 3.260260007 366800 120100 08/08/1995 3.260260007 366800 120100 09/08/1995 2.460260007 366800 120100 11/08/1995 2.560260007 366800 120100 23/08/1995 260260007 366800 120100 08/09/1995 2.460260007 366800 120100 26/03/1996 1160260007 366800 120100 30/03/1996 10.560260007 366800 120100 03/04/1996 9.260260007 366800 120100 19/04/1996 960260007 366800 120100 01/05/1996 8.960260007 366800 120100 17/05/1996 6.360260007 366800 120100 29/05/1996 4.960260007 366800 120100 14/06/1996 5.260270001 364200 132000 13/02/1986 7.360270001 364200 132000 22/05/1986 9.760270001 364200 132000 27/05/1986 960270001 364200 132000 10/10/1986 8.260270001 364200 132000 06/11/1986 960270001 364200 132000 20/11/1986 8.360270001 364200 132000 02/12/1986 8.360270001 364200 132000 18/12/1986 960270001 364200 132000 29/01/1987 9.560270001 364200 132000 12/02/1987 10.460270001 364200 132000 26/02/1987 10.560270001 364200 132000 11/03/1987 1060270001 364200 132000 07/04/1987 10.360270001 364200 132000 23/04/1987 9.5

60270001 364200 132000 07/05/1987 10.860270001 364200 132000 21/05/1987 1160270001 364200 132000 18/06/1987 10.460270001 364200 132000 02/07/1987 10.160270001 364200 132000 16/07/1987 10.160270001 364200 132000 29/07/1987 1060270001 364200 132000 13/08/1987 9.260270001 364200 132000 27/08/1987 9.560270001 364200 132000 10/09/1987 960270001 364200 132000 24/09/1987 9.360270001 364200 132000 06/10/1987 9.160270001 364200 132000 20/10/1987 8.960270001 364200 132000 03/11/1987 8.960270001 364200 132000 17/11/1987 8.760270001 364200 132000 01/12/1987 960270001 364200 132000 17/12/1987 8.360270001 364200 132000 12/01/1988 8.560270001 364200 132000 26/01/1988 8.460270001 364200 132000 11/02/1988 8.560270001 364200 132000 23/02/1988 8.860270001 364200 132000 08/03/1988 9.760270001 364200 132000 22/03/1988 9.860270001 364200 132000 08/04/1988 10.360270001 364200 132000 05/10/1988 9.660270001 364200 132000 19/10/1988 10.160270001 364200 132000 02/11/1988 9.660270001 364200 132000 29/12/1988 8.960270001 364200 132000 11/01/1989 9.760270001 364200 132000 08/02/1989 4.860270001 364200 132000 08/03/1989 9.860270001 364200 132000 22/03/1989 1060270001 364200 132000 19/04/1989 10.460270001 364200 132000 03/05/1989 10.560270001 364200 132000 17/05/1989 10.260270001 364200 132000 14/06/1989 10.560270001 364200 132000 28/06/1989 10.160270001 364200 132000 12/07/1989 1060270001 364200 132000 25/07/1989 10.560270001 364200 132000 23/08/1989 9.160270001 364200 132000 06/09/1989 9.260270001 364200 132000 04/10/1989 9.360270001 364200 132000 01/11/1989 8.660270001 364200 132000 15/11/1989 6.960270001 364200 132000 29/11/1989 4.960270001 364200 132000 13/12/1989 4.960270001 364200 132000 11/01/1990 4.960270001 364200 132000 15/01/1990 4.460270001 364200 132000 23/01/1990 4.660270001 364200 132000 29/01/1990 9.760270001 364200 132000 08/02/1990 4.960270001 364200 132000 15/02/1990 10.460270001 364200 132000 26/02/1990 10.860270001 364200 132000 13/03/1990 4.660270001 364200 132000 09/04/1990 4.760270001 364200 132000 20/04/1990 5.360270001 364200 132000 04/05/1990 5.960270001 364200 132000 18/05/1990 5.360270001 364200 132000 25/05/1990 11.2

60270001 364200 132000 01/06/1990 1160270001 364200 132000 06/07/1990 3.260270001 364200 132000 13/07/1990 1160270001 364200 132000 16/07/1990 4.460270001 364200 132000 23/07/1990 10.360270001 364200 132000 30/07/1990 9.860270001 364200 132000 06/08/1990 3.660270001 364200 132000 13/08/1990 9.960270001 364200 132000 20/08/1990 9.760270001 364200 132000 03/09/1990 9.560270001 364200 132000 10/09/1990 9.560270001 364200 132000 17/09/1990 9.660270001 364200 132000 24/09/1990 860270001 364200 132000 01/10/1990 9.760270001 364200 132000 08/10/1990 9.460270001 364200 132000 15/10/1990 9.160270001 364200 132000 22/10/1990 9.160270001 364200 132000 29/10/1990 7.860270001 364200 132000 05/11/1990 9.460270001 364200 132000 12/11/1990 9.260270001 364200 132000 19/11/1990 8.860270001 364200 132000 26/11/1990 8.960270001 364200 132000 03/12/1990 8.760270001 364200 132000 14/12/1990 8.560270001 364200 132000 17/12/1990 8.860270001 364200 132000 14/01/1991 460270001 364200 132000 28/01/1991 2.560270001 364200 132000 11/02/1991 7.760270001 364200 132000 15/02/1991 9.360270001 364200 132000 25/02/1991 2.560270001 364200 132000 11/03/1991 1.960270001 364200 132000 25/03/1991 2.760270001 364200 132000 22/05/1991 1160270001 364200 132000 23/09/1991 3.760270001 364200 132000 18/11/1991 3.460270001 364200 132000 21/11/1991 9.460270001 364200 132000 04/12/1991 9.460270001 364200 132000 05/12/1991 9.760270001 364200 132000 02/01/1992 3.160270001 364200 132000 13/01/1992 9.860270001 364200 132000 29/01/1992 2.460270001 364200 132000 10/02/1992 2.260270001 364200 132000 09/03/1992 2.860270001 364200 132000 25/03/1992 2.860270001 364200 132000 06/04/1992 4.860270001 364200 132000 22/04/1992 460270001 364200 132000 05/06/1992 4.660270001 364200 132000 17/06/1992 10.460270001 364200 132000 24/06/1992 1060270001 364200 132000 24/06/1992 10.260270001 364200 132000 24/06/1992 9.660270001 364200 132000 24/06/1992 10.160270001 364200 132000 29/06/1992 9.960270001 364200 132000 15/07/1992 9.960270001 364200 132000 27/07/1992 4.260270001 364200 132000 12/08/1992 9.460270001 364200 132000 07/09/1992 10.160270001 364200 132000 21/09/1992 9.6

60270001 364200 132000 07/10/1992 9.660270001 364200 132000 19/10/1992 10.160270001 364200 132000 04/11/1992 9.560270001 364200 132000 02/12/1992 11.160270001 364200 132000 14/12/1992 10.260270001 364200 132000 11/01/1993 11.460270001 364200 132000 27/01/1993 11.960270001 364200 132000 08/02/1993 12.460270001 364200 132000 08/03/1993 6.660270001 364200 132000 05/04/1993 5.960270001 364200 132000 21/04/1993 13.560270001 364200 132000 04/05/1993 5.560270001 364200 132000 03/09/1993 12.2

References

http://www.defra.gov.uk/food-farm/land-manage/nitrates-watercourses/nitrates/