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20220214 12 Wyandra St SWMP
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Site Catchment Areas for DRAINS Modelling Project number: 20220214 Calculations: B. Parry Street Address: 12 Wyandra St Locality: Noosa Heads, NSC Date: 5/09/2022 Existing Site Existing Site Directly connected (m²) Indirectly connected (m²) 12 Wyandra St Roof 271.6 271.6 - Impervious Ground 52.3 - 52.3 Driveway 30.7 - 30.7 Total Imp 354.6 271.6 83.0 Total Per 407.6 - 407.6 Site Area 762.2 271.6 83.0 % impervious Effective DCIA = 75% DCIA ICIA +25% ineffective DCIA 203.7 150.9 Impervious 46.5% 26.7% 19.8% Pervious 53.5% Proposed Site Proposed Directly connected (m²) Indirectly connected (m²) 12 Wyandra St Roof 290.8 290.8 - Impervious Ground 175.6 - 175.6 Driveway 89.3 89.3 Total Imp 555.7 380.1 175.6 Total Per 206.5 - 206.5 Site Area 762.2 380.1 382.1 % impervious Effective DCIA = 75% DCIA ICIA +25% ineffective DCIA 285.1 270.6 Impervious 72.9% 37.4% 35.5% Pervious 27.1%
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