Response to Information Request Letter - 65-67 Elanda Street, Sunshine B...

                                             Figure 13: Landscaping concept plan


 Issue - Stormwater
 Council has a number of concerns with the submitted Stormwater Management Plan
 as follows.
 The submitted plan does not demonstrate compliance with the Water Quality and
 Drainage Code of The Noosa Plan 2020. The plan does not demonstrate how the
 impacts of climate change will be addressed (specifically Performance Outcome PO2
 and Acceptable Outcome AO2.4 (a 20% increase in rainfall intensity by 2100).
 The proposed design includes on-site infiltration but does not include any comment
 from a geotechnical engineer that supports the infiltration on the site.
 The proposed drainage system and infiltration location is in close proximity to the
 Unitywater sewer main.

 Information Required
     13. Provide an amended Stormwater Management Plan that demonstrates
         compliance with Water Quality and Drainage Code of The Noosa Plan 2020 and
         makes specific comment regarding Performance Outcome PO2 and Acceptable
         Outcome AO2.4 (a 20% increase in rainfall intensity by 2100).
     14. Provide a site specific geotechnical investigation that assesses the existing soil
         type, determines the infiltration capacity and supports the proposed infiltration
         system. Provide sizing of the infiltration system and any rainwater capture and



Response to Information Request Letter - 65-67 Elanda Street, Sunshine Beach              16