1. WGC-2 Status Compliance and Trends
guidance document
Johannes Grath
Rob Ward
Lisbon – 21 September 2007
European Commission - DG Environment
Unit D.2: Water and Marine

2. Working Group C (2007-2009) Activity WGC-2 (Status compliance & trends)
What happened so far
Presentation of 1st drafts: 2 May 2007, Berlin
Drafting Group Leader Meeting: 3 July 2007, Vienna
Inclusion of comments received so far
Elaboration of 2nd drafts
Chemical status assessment – version 1.2 (draft text)
Trend assessment – version 0.1 (list of content)
Quantitative status assessment – version 1.2a (draft text)
Internal circulation on 3 September 2007
Presentation of drafts in DG meeting 20 September 2007

3. Chemical Status assessment Content
Introduction
Background and requirements
General principles / Pre-requisites
Guidance for compliance testing
5 Tests
Reporting
Glossary
References
Annex: Methods for calculation
Annex 2: Case Studies ????
No changes

4. Chemical Status assessment 2. Background and requirements
2.1.1 Definition of good chemical status
WFD, Annex V 2.3.2
2.1.2 Criteria
GWD, Article 3 (TV and GW-QS)
2.1.3 Procedure
GWD, Article 4, Annex III
2.1.4 Classification elements and tests
No changes

6. Chemical Status assessment 2. Background and requirements
2.2 Risk Assessment – Compliance Assessment
New

7. Chemical Status assessment 2. Background and requirements
2.3 Threshold value – Criteria‘s values
Link to TV guidance paper.
Criteria‘s values = intermediate TV for each receptor
TV = most stringent criterias value. Reported in RBMP
2.4 Schedule of compliance testing
For GWBs at risk
WHEN? Assumption: At the end of RBMP
New

8. Chemical Status assessment 2. Background and requirements
2.5.1 Need for data aggregation at monitoring points
RBMP-average = average of average over RBMP period
Impairment of human use
Significant env. risk from pollutants across GWB
Saline and other intrusion
Annual arithmetic mean – maximum values more relevant
Diminution/damage of aquatic and terrestrial ecosystem
No deterioration – DWPA
Substantial Changes

9. Chemical Status assessment Elements of testing
Trends

10. Chemical Status assessment 4. Guidance for compliance testing
The assumption for this guidance is
Each test has to be performed for GWBs and receptors at risk . Do not stop after the first ‚not of good status‘ result. Measures might be needed for several classification elements.
Perform each test for each pollutant, group of pollutants (e.g. sum of pesticides) and indicator of pollution posing a risk separately. No summary assessment!
For each receptor consider individual criteria values.

11. Whole GWB – Criteria’s value: 25 µg/l (e.g. legitimate uses)X
– DW safeguard zone (DW standard of 10 µg/l): minimum treatment should apply = compliance to Art. 7(3) of WFD
AQUATIC
ECOSYSTEM
GROUNDWATER BODY= DWPA
DW safeguard zone
Criteria value: 14 µg/l X X X X X X X X X
TERRESTRIAL
ECOSYSTEM X X X
Criteria value: 8 µg/l X X X
AQUATIC
ECOSYSTEM
Criteria value: 12 µg/l

12. Trend assessment

13. Trend assessment Trend assessment
largely based on the technical report developed in 2002 (WG 2.8),
will provide recommendations to Member States on how to undertake and interpret trend studies (including considerations on lag time of groundwater systems and how to integrate this in trend assessment);

14. Trend assessment (list of content)
Working Group C ( ) Activity WGC-2 (Status compliance & trends)
Trend assessment (list of content)
Legal background and requirements
General principles
Classification tests
Trend assessment for individual monitoring points
Statistical procedure! Different for springs and wells / pumped and not pumped
Identification of upward trends at GWB scale
Level of confidence and precision
Baseline level
Identification of upward trends which present significant risk of harm to ecosystems, human health or legitimate uses
Where necessary… for assessing plumes do not expand
Definition of starting point for trend reversal
Reporting

15. Trend assessment element
Trend tests

16. Trend (reversal) assessment Tests
Tests + Flow charts (to be developed)
No harm to legitimate uses
No harm to aquatic ecosystems
No harm to terrestrial ecosystems
Plume assessment
No saline intrusion
No deterioration (DWPA)
Part of
status assessment

17. Trend (reversal) assessment Parameters
Open issues
Parameters
significant and sustained upward trends to be identified in concentrations of pollutants, groups of pollutants or indicators of pollution found in groundwater bodies at risk all parameters?? - not explicit restriction but:
Starting point is linked to GW-QS and TV  parameters causing risk – subject to trend assessment
Recommendation:
As trend assessment is part of the risk assessment  consider all parameters subject of pressures – which are present in significant amounts – see TV guidance 4.1.B

18. Status & trend (reversal) assessment
Case studies - Once the guidance is widely accepted
In accordance with the guidance – to illustrate the guidance
To illustrate how status and trend assessment is being carried out in different Member States
To cover ranges of hydrogeological and environmental settings
Template for the case studies
Limit case study to a maximum of 3 pages
Inform DG leaders on part of guidance being covered

19. Working Group C (2007-2009) Activity WGC-2 (Status compliance & trends)
19 Oct Comments from WG C-2 Drafting Group Members (chemical status and trends)
Nov 2007 – Distribution of revised (status) and new (trend) draft to DG and WG C
Jan Comments from DG and WG C
End March Distribution of revised draft to DG and WG C
21 April 2008 – Ljubljana: WG C plenary meeting
Tentative timetable