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7 <br /> IMPERVIOUS SURFACE CALCULATION TEMPLATE <br /> Version 1/11/91 <br /> Planning & Inspections Department - Orange County NC <br /> PROJECT DATA: <br /> Applicant Name: One-Acre Lot (Including 1/2 of 50-foot right-of-way) <br /> Location: <br /> Tax Map Reference: <br /> LOT DATA: IMPERVIOUS SURFACE DATA: <br /> Width (Ft) : 150 Maximum Impervious Surface Ratio (ISR) : 12% <br /> Frontage (Ft) : 150 Maximum Impervious Surface Area (SqFt) : 5227 <br /> Depth (Ft) : 290 <br /> Area (SqFt) : 43560 BUILDING DATA: <br /> Number of Stories: 1 <br /> ROAD DATA: Front Setback (Ft) : 120 <br /> Class: Public Total Floor Area (SqFt) : 2200 <br /> Width (Ft) : 20 First Floor Area (SqFt) : 2200 <br /> DRIVEWAY DATA: UTILITY STRUCTURES/USES: Length Width Area <br /> Length (Ft) : 135 (Ft) (Ft) (SqFt) <br /> Width (Ft) : 8 <br /> Garage 0 0 0 <br /> Storage 12 . 10 120 <br /> Utility 0 0 0 <br /> Porch 15 6 90 <br /> Sidewalk 40 4 160 <br /> Patio/Deck 0 0 0 <br /> Pool/Tennis 0 0 0 <br /> Other 0 0 0 <br /> Other 0 0 0 <br /> Total 370 <br /> IMPERVIOUS SURFACE CHARACTERISTICS: <br /> Structural Coverage Driveway Road <br /> Parcel 1/2 <br /> Size Building Utility Total Length Width Area Frontage Width Area <br /> (SqFt) (SqFt) (SqFt) (SqFt) (Ft) (Ft) (SqFt) (Ft) (Ft) (SqFt) <br /> 43560 2200 370 2570 135 8 1080 150 10 1500 <br /> CALCULATION RESULTS: <br /> Impervious Area (SqFt) : 5150 Exceeds Maximum ISR: ( 0 )Yes=1 <br /> % Impervious Surface: 11.82% No =0 <br /> Variance From Required ISR: 0. 18% OR 77. 2 SqFt <br /> Minimum Lot Size Required To Comply: 0.99 Acres OR 42917 SqFt <br /> NOTES: (1) Utility structures/uses are not included as part of, but may <br /> be attached to or separate from, main building area. <br /> (2) Driveway length to include parking/back-up area plus property <br /> line-to-road distance. <br /> (3) Open, wooden decks are not counted as impervious surfaces. <br />