datum
Emissions to water in the Netherlands
Richard van Hoorn, Centre for Watermanagement
Joost van den Roovaart, Deltares
11-12 September 2008
12 september 2007Positionering, branding en huisstijl Deltares - 2
Content
1 The Dutch Pollutant Release and Transfer Register
2 Presentation of the Dutch SoE data
3 Specific problems concerning the SoE data request
4 Some general dilemma’s concerning gathering data of emissions and discharges to water
12 september 2007Positionering, branding en huisstijl Deltares - 3
1. The Dutch Pollutant Release and Transfer Register
12 september 2007Positionering, branding en huisstijl Deltares - 4
Dutch PRTR (1)
. Started in 1978
. A lot of organisations closely work together
. Covering the large watersystems, rivers, coastal waters and the waterboards
. Data is used for national, international and regional reports
. Updates every year: 1 new year added + standard 1990/1995/2000/2005
. Releases of 350 pollutants to air, water and soil
. Both point sources: UWWTP (400) and industry (600) and diffuse sources (60)
. Covering emissions from the source, loads to the sewer system and discharges to the surface water
12 september 2007Positionering, branding en huisstijl Deltares - 5
Dutch PRTR (2)
. Spatial allocation of the emissions, different regional reports possible
. Information is stored in a central database
. Consistent: corrections of old years
. Transparant: description of quantification methods (fact sheets)
. Free accesible on internet: www.prtr.nl
. Short presentation today/tomorrow?
12 september 2007Positionering, branding en huisstijl Deltares - 6
Main schedule
Industry
Refineries
Energysector
Traffic andTransport
Consumers
Construction
Waste disposal
Trade, services and government
Agriculture
Nature
Surface w
aters
Discharge to air
Air
Agricultural soils
Natural soils
Transboundary
transfers
Discharge to soil
Sewage systems
Deposition
on sewers
Deposition on surface waters
Run-off and leaching
Sewers
UWWTP
Load to sewers
Discharged load to surface waters
Untreated sewage
Rainwater drains
Stormwater overflows
Effluents
Transboundary
rivers
Legend
Sources Compartment Discharges Transfers Transboundary transfers and rivers
Sewage sludges
12 september 2007Positionering, branding en huisstijl Deltares - 7
2. Presentation of the Dutch SoE data
12 september 2007Positionering, branding en huisstijl Deltares - 8
Information reported
. Selection of 12 substances: total P, total N, COD, BOD Cd, Cu, Hg, Pb, Ni, Zn fluoranthene, benzo(a)pyrene
. Only one year: 2005
. No river loads
. Reported loads are discharges to water, no retention and other processes
. Sources on aggregated level as requested: diffuse sources: 7 groups point sources: 4 groups UWWTP point sources: 2 groups industry (IPPC, non-IPPC)
12 september 2007Positionering, branding en huisstijl Deltares - 9
3. Specific problems concerning the SoE data request
12 september 2007Positionering, branding en huisstijl Deltares - 10
Specific problems on SoE request
. Legislative requirements or voluntary reports
. Selection of the data available
. Quality of the data
. Source categories, esp. diffuse sources
system or schedule of the emission sources sources don’t exclude each other: atmosferic deposition/urban diffuse agriculture and background definitions not quite clear why not use the NACE-code (for industry) and the NOSE-P or SNAP-code for diffuse sources? a well-defined standard source-codelist combined with a schedule with relations, compartments and pathways is an essential basis we need
12 september 2007Positionering, branding en huisstijl Deltares - 11
4. Some dilemma’s concerning gathering data of emissions
and discharges to water
12 september 2007Positionering, branding en huisstijl Deltares - 12
Diffuse sources become relatively more important
0
500
1000
1500
2000
2500
1975 1980 1985 1990 1995 1999
To
n/ja
ar
diffuse sources
eff luents UWWT's
industry (direct)
12 september 2007Positionering, branding en huisstijl Deltares - 13
Diffuse sources are not easy to handle
. monitoring diffuse sources in general is not easy
. often a mix of measurements, estimations and model calculations
. esp. the remaining diffuse key sources are difficult to monitor
. often connected to different compartments
. other parties involved (institutes, ministries)
. the need for harmonization is obvious
12 september 2007Positionering, branding en huisstijl Deltares - 14
Focussing or not?
. focus on the major problem substances
. ..on the key sources of those substances..
. ..and to reduce the largest uncertainties in quantification methods
. on the other hand: we don’t want to focus too narrow
. new substances, problems change, new WQ targets
. try to find a balance
12 september 2007Positionering, branding en huisstijl Deltares - 15
Transparancy of the data and quantification methods
. we have to because of the Aarhus-protocol and E-PRTR
. we need to within the River Basins
. transparancy improves the quality of the methods
. communication, exchange information, review
. in the Netherlands finalized detailed descriptions of the quantification methodes of diffuse (and point) sources: 50 “fact sheets” with a lot of information
12 september 2007Positionering, branding en huisstijl Deltares - 16
Fact sheets
. description of the source (or group of sources)
. explanation of the estimation method
. emission factors
. statistical information used
. measures and effects
. calculated emissions at the source
. distribution to different compartments and pathways
. spatial allocation
. changes compared to previous methods
. quality of the method and suggestions for improvement
. contact person
. references
12 september 2007Positionering, branding en huisstijl Deltares - 17
Quality
. classification in 5 categories: A-E
. A: based on a lot of measurements on representative locations
. E: based on a technical calculation based on assumptions
. based on the CORINAIR methods (CORe emission INventories AIR)
. classification of: the emission factors, the statistical data, distribution to the compartments and pathways, spatial allocation
. gives indication what are the weakest parts in the method and gives direction for improvements in the methods
. fact sheets may be usefull for others: we try to find money for translation in English