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Part I - Other Considerations - Richmond Valley Council

Part I - Other Considerations - Richmond Valley Council

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<strong>Richmond</strong> <strong>Valley</strong> Development Control Plan 2012Table I9.2 Compliance Requirements for Residential Lots/Dual Occupancies:Water QualityImpermeable areaRoof areaDriveways wherethe impermeablepaved surfaceinside the propertyboundary exceeds30 m 2 . This appliesto lots under 800 m 2only. There are norequirements forlots > 800 m 2RequirementsOne or more of the following must be installed:‣ Roof water or stormwater tank at least 5,000 L per dwellingharvestable volume capturing at least 50 % of roof area; and/or‣ Infiltration Device/s with upstream sediment filter capturing atleast 80% of total dwelling roof area; and/or‣ Bio retention device with upstream sediment filter capturing atleast 80% of total dwelling roof area; or‣ <strong>Other</strong> treatment measure where it can be demonstrated by theproponent to the satisfaction of <strong>Council</strong> that the Objectives andPerformance targets of this section are met.Note. <strong>Council</strong> may specify treatment measures or restrict the treatmentmeasures available in certain areas.One or more of the following must be installed:‣ At least 80% of total impermeable area diverted to either• infiltration device/s with upstream sediment filter; and/or• bio retention device/s with upstream sediment filter; and/or• grassed / vegetated filter strip; and/or• stormwater tanks with upstream sediment filter.‣ <strong>Other</strong> treatment measure where it can be demonstrated by theproponent to the satisfaction of <strong>Council</strong> that the Objectives andPerformance targets of this section are met.Note. <strong>Council</strong> may specify treatment measures or restrict the treatmentmeasures available in certain areas.(d) Subdivision, Commercial, Industrial, Tourism and <strong>Other</strong>Development to which this Policy AppliesThe following additional requirements apply:‣ Development must demonstrate adherence to the objectives and targetsof this policy by:• Undertaking a Stormwater Management Plan where requested.• Achieving water quality targets by utilising water quality treatmentdevices in a method consistent with the waste managementhierarchy, stormwater treatment train and principles of WaterSensitive Urban Design as described in Section I9.2 of this Chapter.‣ At least 80% of the total impermeable area of a site must be treated tothe targets specified.I9.5 Stormwater Generation(1) PreambleUrban development results in significant increase to the level ofimpermeability and subsequently massive increases in the volumes ofstormwater being generated and stormwater peaks. The creation of hardsurfaces also increases stormwater velocities. These increases result in:<strong>Part</strong> I – <strong>Other</strong> <strong>Considerations</strong> – Water Sensitive Urban Design I.99

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