new ofwat cm meeting - 24apr12 - v3 · 2020. 5. 20. · 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40...
TRANSCRIPT
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Ofwat MeetingCatchment Management
24th April 2012
Will Robinson
Water Resources Manager
Presentation Overview
• Water Quality Challenges for NWL
• AMP5: Catchment Management
• AMP6: What Next?
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ESW Water Supply Areas
Intensively Farmed
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Lowland River Catchments
Water Quality Challenges
Pesticides Nutrients Sediment and colour
Metaldehyde Nitrate
Clopyralid Phosphate
Propyzamide
Carbetamide
Pesticide DWi Undertakings
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PR09 Business Plan
PR09 Business Plan
• To employ 4 Catchment Advisors
• 3 in ESW / 1 in NW
• To investigate Catchment Treatment Options
• Demonstration Biobeds
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AMP5 Catchment Management
Catchment Management: Our Aims
• To reduce pesticide, nitrate and soil loss from the field to rivers
• To raise stakeholders’ awareness of water quality issues
• NWL owns little land and has limited control over how
land is managed
• To influence agricultural activities and advocate best practice
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Working in Partnership
• Join or form partnerships with farming stakeholders and
regulators
• Principal Partner: CSF – via informal agreement
• Partnerships bring expertise, contacts and additional
funding
Our Catchments
• Trinity Broads & Lound Lakes
ESW, EA, NE, Broads Authority
• River Bure & River Waveney
ESW and Catchment Sensitive
Farming
• River Stour
ESW and Catchment Sensitive
Farming
• Rivers Chelmer and
Blackwater
Strategic Partnership with ESW,
EA, NE
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Chelmer & Blackwater Strategic
Partnership Structure
CSF Stakeholder Meeting
Chelmer & Blackwater Agri-advice Delivery Partnership
(Steering Group comprises delivery partners)
Chelmer & Blackwater Agri-advice Delivery Partnership
(Steering Group comprises delivery partners)
Partner Offers to Farmers & Agronomists
using new Delivery Partnership Branding
Local Advice
Delivery
Workshops:
soil/nutrient/manure
management
Farm Demonstrations:
Biobeds; Fertiliser and slug
pellet spreader calibration;
Alternative soil cultivation
methods
One to one farm visits:
management plans &
whole farm visits (diffuse
pollution audit)
Newsletters: Highlighting issues, best practice
Soil & manure analysis:
Selective offer of free
P,K,Mg and PH, OM, and
manure/slurry/dirty water
Evidence
Base:
Monitoring
and Field
Scale
Investigation
Project Deliverables
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Monitoring - Evidence Base
0.4200
0.0510
0.1300
0.0160
0.0750
0.01600.00
0.05
0.10
0.15
0.20
0.25
0.30
0.35
0.40
0.45
Hundred River @ Pooley
Street
Doit Bridge Denmark Bridge, Diss
Billingford Bridge
River Dove, Red Bridge
Needham Mill Homersfield Bridge
Tunbeck @ Wortwell
Earsham Mill Shipmeadow Intake
Co
ncen
trati
on
ug
/l
River Waveney Clopyralid Gradient07-Mar-1114-Mar-1121-Mar-11
29-Mar-1104-Apr-1111-Apr-1119-Apr-1126-Apr-1103-May-1110-May-11
17-May-1124-May-1131-May-1107-Jun-1114-Jun-1121-Jun-11
27-Jun-1104-Jul-1118-Jul-1102-Aug-1115-Aug-1130-Aug-1114-Sep-11
26-Sep-1104-Oct-1110-Oct-1117-Oct-1125-Oct-1131-Oct-11
08-Nov-1114-Nov-1122-Nov-1128-Nov-1105-Dec-1113-Dec-11
19-Dec-11
18th July 2011
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0
0.05
0.1
0.15
0.2
0.25
0.3
Hundred River @
Pooley Street
Doit Bridge Denmark Bridge, Diss
Billingford Bridge
River Dove, Red Bridge
Needham Mill Homersfield Bridge
Tunbeck @ Wortwell
Earsham Mill Shipmeadow Intake
Meta
ldeh
yd
e u
g/l
River Waveney Metaldehyde Gradient 07-Mar-11
14-Mar-11
21-Mar-11
29-Mar-11
04-Apr-11
11-Apr-11
19-Apr-11
26-Apr-11
03-May-11
10-May-11
17-May-11
24-May-11
31-May-11
07-Jun-11
14-Jun-11
21-Jun-11
27-Jun-11
04-Jul-11
18-Jul-11
02-Aug-11
15-Aug-11
30-Aug-11
14-Sep-11
26-Sep-11
04-Oct-11
10-Oct-11
17-Oct-11
25-Oct-11
31-Oct-11
08-Nov-11
14-Nov-11
22-Nov-11
28-Nov-11
05-Dec-11
13-Dec-11
19-Dec-11
Late Sept – Oct 2011
Evidence Base: Field Runoff Study
Soil erosion by water can move large quantities of soil sediment and with it
large amounts of nutrients which are often washed into water courses.
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Spreader / Pelleter Checks / Calibration
• Free Fertilizer Spreader Check and Calibration
• Application rates &
spread pattern checked
• Accurate fertilizer use
• Free slug pellet applicator calibration
Information: Manure Analysis
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One to One Advice: Pigs near boreholes
One to One Advice: Buffer Strips
Before After
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One to One Advice: Borehole Protection
Project Branding
Farmer / Agronomist
Articles
Adverts for Events
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Farm Scale Investigation
6 inch Land
Drain Outfall
Footbridge Ditch
Sample Point
6 inch Land
Drain Outfall
…including the farm
yard drain.
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• Recording: Cropping, Cultivation, Pesticide application
• Monitoring water quality in:
• Land drain discharge ditches (Through flow)
• Ditches (Surface run off)
• Farmyard drains
• Main findings to date:
• Peak concentrations found when soil moisture is high / drains flowing
• Peak concentrations in farm yard drains
• 40% of all pesticide leaving the farm is from the farm yard.
Farm Scale Investigation
Farm Pesticide Handling Areas
0
2
4
6
8
10
12
ug
/l
Date
Metaldehyde ug/l Propyzamide ug/l Clopyralid ug/l
0.1ug/l
EU
Drinking
Water
Standard
•Only a minority of farms have a pesticide handling and
sprayer filling area that is fit for purpose
•Generally on on bare soil, hardcore or concrete which
drains to an adjacent watercourse.
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Demonstration Biobeds
Biobed Irrigation
Area for
Clean
Effluent
Sprayer
Filling Area
Biobed Results
• Biobeds can remove up to 99% of pesticides put
through them.
Description Date Taken Clopyralid Fluroxypyr MCPB CMPP Propyzamide
ug/l ug/l ug/l ug/l ug/l
Influent 28/02/2012 0.058 0.14 0.016 0.16 6.6
Effluent 28/02/2012 <0.016 <0.013 <0.0092 <0.018 <0.0084
Influent 07/03/2012 51 0.19 0.32 0.059 28
Effluent 07/03/2012 <0.16 <0.13 <0.092 <0.5 <0.084
Influent 13/03/2012 93 0.27 0.52 <0.18 58
Effluent 13/03/2012 <0.16 <0.13 <0.092 <0.18 <0.084
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Other Pesticide Handling Options
• Biofilter
• Roofed Area
• Bunded Concrete Pad
• Drip Tray/Container Rack
PR14 Business Plan
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AMP6
• Catchment Management – Business As Usual
• All ESW Surface Water Catchments now defined as
Safeguard Zones
• Catchment Management Partnership will form key part
of Programme of Measures
AMP6: Up-scaled Biobed Pilot
• Biobeds now supported by EA
• Biobeds can remove over 99% of pesticide from the
influent
• NWL study has shown over 40% of pesticides are from
the farm yard
• Demonstration biobeds in a number of NWL
catchments
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AMP6: Up-scaled Biobed Pilot
• Install pesticide handling areas (hard
standing/containment, biobeds, biofilters) on all farms in a
sub-catchment
• Cost / Benefit: We are working on it!
• Measure of Success: For pesticide concentrations to be
below the PCV downstream of the pilot
• If achieved, results could be used to support all farms
having biobeds to ensure PCV compliance at the intake
Questions