State and trends of contaminated Antarctic sites

Component
Summary
Grade
Very poor Poor Good Very good
Confidence
In Grade In Trend
Comparability
To previous years

Terrestrial section of Thala Valley clean-up finalised; some material remains in the nearshore marine environment

Year(s): 
2016
4
Improving
Confidence (in grade): 
Adequate
Confidence (in trend): 
Adequate
Comparability (to previous reports): 
Comparable

Terrestrial section of Thala Valley clean-up finalised; some material still left in nearshore and marine environment

Year(s): 
2011
4
Improving
Confidence (in grade): 
Adequate
Confidence (in trend): 
Adequate
Comparability (to previous reports): 
Not assessed

Historical fuel spill (1980s)

Year(s): 
2016
2
Stable
Confidence (in grade): 
Adequate
Confidence (in trend): 
Adequate
Comparability (to previous reports): 
Comparable

Historical fuel spill (1980s)

Year(s): 
2011
2
Stable
Confidence (in grade): 
Adequate
Confidence (in trend): 
Adequate
Comparability (to previous reports): 
Not assessed

Fuel spill at main powerhouse (1999); contaminants reached the melt lake from which fresh water is obtained for the station

Year(s): 
2016
4
Improving
Confidence (in grade): 
Adequate
Confidence (in trend): 
Adequate
Comparability (to previous reports): 
Comparable

Fuel spill at main powerhouse (1999); contaminants reached the melt lake from which fresh water is obtained for the station

Year(s): 
2011
3
Improving
Confidence (in grade): 
Adequate
Confidence (in trend): 
Adequate
Comparability (to previous reports): 
Not assessed

Abandoned station (built in 1957); old tip site and fuel cache are still present and contain a large volume of contaminated material

Year(s): 
2016
2
Stable
Confidence (in grade): 
Adequate
Confidence (in trend): 
Adequate
Comparability (to previous reports): 
Comparable

Abandoned station (built in 1957); old tip site and fuel cache still present and contain a large volume of contaminated material

Year(s): 
2011
2
Stable
Confidence (in grade): 
Adequate
Confidence (in trend): 
Adequate
Comparability (to previous reports): 
Not assessed

Old tip site near Davis research station

Year(s): 
2016
2
Stable
Confidence (in grade): 
Limited
Confidence (in trend): 
Limited
Comparability (to previous reports): 
Comparable

Old tip site

Year(s): 
2011
2
Stable
Confidence (in grade): 
Limited
Confidence (in trend): 
Limited
Comparability (to previous reports): 
Not assessed

Fuel spill (2010)

Year(s): 
2016
3
Improving
Confidence (in grade): 
Limited
Confidence (in trend): 
Limited
Comparability (to previous reports): 
Not assessed

Old tip site, large land-based debris removed. Some material remains in the nearshore marine environment

Year(s): 
2016
2
Stable
Confidence (in grade): 
Limited
Confidence (in trend): 
Limited
Comparability (to previous reports): 
Comparable

Old tip site, large land-based debris removed; some material still left in nearshore marine environment

Year(s): 
2011
2
Stable
Confidence (in grade): 
Limited
Confidence (in trend): 
Limited
Comparability (to previous reports): 
Not assessed

Historical fuel spill (1980s)

Year(s): 
2016
3
Improving
Confidence (in grade): 
Adequate
Confidence (in trend): 
Adequate
Comparability (to previous reports): 
Comparable

Historical fuel spill (1980s)

Year(s): 
2011
3
Improving
Confidence (in grade): 
Adequate
Confidence (in trend): 
Adequate
Comparability (to previous reports): 
Not assessed

Historical fuel spills (1980s–2000)

Year(s): 
2016
3
Improving
Confidence (in grade): 
Adequate
Confidence (in trend): 
Adequate
Comparability (to previous reports): 
Comparable

Historical fuel spills (1980s-2000)

Year(s): 
2011
3
Improving
Confidence (in grade): 
Adequate
Confidence (in trend): 
Adequate
Comparability (to previous reports): 
Not assessed

Leakage of 3500 litres of special Antarctic blend fuel from above-ground fuel line. Containment barriers were constructed and an extensive area (less than 5000 m2) of contaminated soil requiring treatment and remediation was identified

Year(s): 
2016
2
Stable
Confidence (in grade): 
Adequate
Confidence (in trend): 
Adequate
Comparability (to previous reports): 
Not assessed
Klekociuk A, Wienecke B (2016). Antarctic environment: State and trends of contaminated Antarctic sites. In: Australia state of the environment 2016, Australian Government Department of the Environment and Energy, Canberra, https://soe.environment.gov.au/assessment-summary-77-state-and-trends-contaminated-antarctic-sites, DOI 10.4226/94/58b65b2b307c0