The filtering capabilities of the SPEL Stormceptor and SPEL Filters in reducing TSS, TP and TN concentrations in stormwater runoff is a key factor in the continued growth of WSUD in Australia. The Nambour site has captured multiple stormwater events in which 12 events were analysed for performance efficiency. Some of these 12 events have produced valid water samples in accordance with the Stormwater BMP Monitoring Manual; however, overall the minimum parameter requirements were not met for this project. From these water samples, reductions in TSS and TP were found using the concentration removal efficiency method and the pollutant mass removal efficiency method. TN results showed negative reduction efficiencies for the SPEL Filters. Due to the site catchment area being predominantly new concrete, the inflow quantities of the substances being focussed on was less than required for most samples collected. More samples will be collected in future which will hopefully produce a higher level of inflow quantities to meet the minimum protocol requirements for results analysis.
Submitted in the fulfilment of the requirements of the degree of Bachelor of Engineering (Civil Engineering), University of the Sunshine Coast, 2014.