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20220171 - 14 Wyandra St SWMP
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Site Catchment Areas for DRAINS Modelling Project number: 20220171 Calculations: B. Parry Street Address: 14 Wyandra Street Locality: Noosa Heads, NSC Date: 5/08/2022 Existing Site Existing Site Directly connected (m²) Indirectly connected (m²) 14 Wyandra Street Roof 258.1 258.1 - Impervious Ground 42.1 - 42.1 Driveway 47.0 - 47.0 Total Imp 347.2 258.1 89.1 Total Per 472.0 - 472.0 Site Area 819.2 258.1 89.1 % impervious Effective DCIA = 75% DCIA ICIA +25% ineffective DCIA 193.6 153.6 Impervious 42.4% 23.6% 18.8% Pervious 57.6% Proposed Site Proposed Directly connected (m²) Indirectly connected (m²) 10 Ann St Roof 421.8 421.8 - Impervious Ground 19.0 19.0 - Driveway 145.6 - 145.6 Total Imp 586.4 440.8 145.6 Total Per 232.8 - 232.8 Site Area 819.2 440.8 378.4 % impervious Effective DCIA = 75% DCIA ICIA +25% ineffective DCIA 330.6 255.8 Impervious 71.6% 40.4% 31.2% Pervious 28.4%
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