Storm Water management plan · MCU12/0133.03

Noosa Council documents


                  Bligh Tanner Consulting Engineers                                                                                       Page 13
                  Noosa Flexi Learning Centre Stormwater Management Plan
                  August 2012




                  Table 6: Comparison of runoff volumes and pollutant loads
                                                                                         Conventional                 Noosa
                                                                                         commercial                   Flexi       Noosa Flexi
                                                                    Conventional         with best        Noosa       School      School with
                                                                    commercial           practice*        Flexi       with        tanks +
                                                       Existing     development          bioretention     School      tanks       infiltration
                   Flow (ML/yr)                               2.9             7.8                   7.6         4.6         3.9             2.0
                   Total Suspended Solids (kg/yr)            160               1300                270        330         300             150
                   Total Phosphorus (kg/yr)                  0.19                3.0                1.2        0.8       0.65             0.22
                   Total Nitrogen (kg/yr)                     2.1                 25                14         7.3         5.5             1.9
                  * sized to reduce pollutant loads by 80% (TSS) 60% (TP) and 45% (TN)




                                                                                                                      Print Date: 2 March 2020, 2:19 PM