Flinders Power are continuing their maintenance of the Port Augusta Ash Dam, including odour suppressing of the Polishing Pond.
In a written statement, Flinders Power state that the odour suppressant has been successful in masking odour from the polishing pond which is located near the ash dam.
An inspection of the pond area is conducted every third day for odour, and results are recorded and actions initiated as required.
The suppressant is sprayed on by hand via water cart hoses and the suppressant, its application and use was approved by the Environment Protection Authority (EPA) prior to being applied.
Suppressant lasts between 10-24 days depending on the weather conditions, which has required regular monitoring.
60 litres of odour suppressant was provided to the Port Augusta City Council for a trial on Bird Lake.
Odour management and suppressant application will continue until a cover of top soil is placed over the polishing pond area.
Work on the Port Augusta ash dam is continuing and by Thursday February 16, 100,000 cubic metres of top soil had been moved from the borrow pit to the Ash Storage Area surface.
Construction of the third “access finger” was completed on Thursday February 23.
The construction process will progress to the fourth of a total of five ‘access fingers’, which help ease access to the ash dam area.
Nine trucks, a PistenBully machine, one D6 dozer, one 30 tonne excavator and one 45t excavator continued operating, placing a total of 1,457 loads of topsoil onto the ash storage area surface for “access finger” construction between February 16-23.
The EPA has given approval to trial the application of topsoil across various areas of the ash storage area from the constructed “access fingers”.
This trial will allow Flinders Power and their contractor to verify application techniques across a small number of sections of the ash storage area.