1. Benoît FRIBOURG-BLANC, IOW
How to build the Inventory of Emissions, Discharges and Losses: main elements and compilation of existing datasets
Benoît FRIBOURG-BLANC, IOW
WG E(2) meeting, 17 October 2007

2. Inventory : the legal basis
WFD:
reduction/phase-out of discharges, emissions and losses of priority (hazardous) substances (Art.16 (3) and 1(c)),
a review of the impact of human activity (pollution), including identification of significant point and diffuse sources of pollution (Art. 5)
Proposal COM(2006) 397 final:
Inventory of emissions, discharges and losses (Art. 4)

3. Inventory : what is it?
a database that organises, by source, the amount of substances emitted/released and through various pathways are discharged or lost into the aquatic environment, or transferred to other media.
Source : Annex 1A, EU Environment Directorate, 2005c

4. Inventory : the main components
Sources: may be classified in categories, and the WFD requires at least point and diffuse sources (Art. 10) and urban, industrial, agricultural and other installations and activities (Annex II 1.4.).
Pathways generally include all the routes the pollutants follow from the source to the receiving aquatic environment.
Substances: all priority substances and pollutants listed in Part A of Annex I of COM(2006) 397 final
Geographical scale:
point sources: each emitter
diffuse sources: sub-basin of RBD
Temporal scale: annual load

5. The Sources Diffuse sources Point sources S1 Atmospheric deposition
S2 Indirect drainage of deep groundwater reservoirs
S3 Agriculture
S4 Traffic and non urban infrastructure
S5 Accidental spills.
S6 Release from materials.
Point sources
S7 Roofs and paved areas
S8 Households
S9 Industry
S9.1 SME
S9.2 E-PRTR industry
S10 Waste deposit/landfill
S11 Historically contaminated land
S12 Natural sources
A link with NACE needed
Source : Data Collection Manual for the OECD/Eurostat Joint Questionnaire on Inland Waters, Tables 1 – 7, June 2004

6. The Pathways
easier for point sources: collection system (pipes, ditches, channels, tunnels, conduits, containers) + treatment system (treatment plant, sedimentation area…).
diffuse sources: leakage, drift, spills, drainage…
Some examples of pathways:
Source : Adapted from Annex 1A, EU Environment Directorate, 2005c

7. The substances
Part A of Annex I of COM(2006) 397 final (individual substances or groups)
quantities with their associated units
international nomenclatures: EINECS/ELINCS and/or CAS …
This can be extended depending on additional needs identified

8. Inventory : existing data collections

9. Building the Inventory
Objective:
Sources : all generating significant pollution quantities
Pathways: all through which significant quantities are discharged or lost
Substances: all significant loads for all relevant substances
Geographic: each RBD sub-unit
Temporal: year
Basis: WFD Art 5 and 8, EPER and E-PRTR
Already existing datasets
Many guidances
Defined databases

10. Building the Inventory
Define technical organisation: EPER and E-PRTR, ETC-WTR 2002 and National inventories or permit registers
Adapt to national organisation: compare with reference lists
Select relevant datasets and define combination

11. Inventory : pending questions
How to define non-significant loads? (90%? Less?)
How to consider off-site transfers (purification performance? GIS link)
How to include diffuse sources? (concept of net emission?)
How to assess/validate appropriate methods to close the gaps? (QA/QC on methods?)

12. Conclusion and way forward
A need to streamline approach with other developments under E-PRTR and/or EEA and ETC-WTR,
Use the draft as a basis to develop a guidance with MS:
develop a work programme,
develop a table of content,
and identify good examples to illustrate.
Do you wish to start drafting a guidance?