This study investigated the effectiveness of two SPEL basins - a dry media filter basin and a wet sump filter basin - in treating stormwater pollutants from urban runoff. Two sites were chosen in Sippy Downs, on the Sunshine Coast. These sites are located in a developing urban area, in the landscape verge along Sippy Downs Drive. Inlet and outlet subsamples were captured in and withheld in Campbell Scientific PVS 4100 C Auto Samplers after rainfall events over 12 months, in which they would then be collected and analysed. Parameters tested were: total suspended solids (TSS), total nitrogen (TN) and total phosphorus (TP). In total, 23 sample sets of stormwater were collected between the two basins. However, only six were used for analysis. The other 17 events were disqualified due to not meeting minimum sample and rainfall protocol or were excluded for demonstrating erratic results. No events from the wet sump filter basin were used for analysis as all samples exhibited erratic results. It is likely that these erratic results may be due to blockages within the stormsack trough which interrupted sampling. The dry media filter basin results showed average concentration removal efficiencies of 40%, 14% and -14% for TSS, TN and TP respectively.
Submitted in the fulfilment of the requirements of the degree of Bachelor of Engineering (Civil Engineering), University of the Sunshine Coast, 2015.