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Page 14 First Defense°Operation and Maintenance Manual <br /> 11. Model SizesI r tf <br /> The First Defense®inlet and internal bypass arrangements are available in several model sizes and configurations.The components <br /> have modified geometries allowing greater design flexibility to accommodate various site constraints. <br /> All First Defense®models include the internal components that are designed to remove and retain total suspended solids (TSS), <br /> gross solids,floatable trash and hydrocarbons(Fig.2). First Defense®model sizes(diameter)are shown in Table 1. <br /> III. Maintenance <br /> First DefenseO Components <br /> 1. Built-In Bypass 4. Floatables Draw-off Port 7. Sediment Storage <br /> 2. Inlet Pipe 5. Outlet Pipe 8. Inlet Grate or Cover <br /> 3. Inlet Chute 6. Floatables Storage <br /> a <br /> '/, <br /> s1� <br /> (not pictured) f <br /> 1 � <br /> a <br /> f <br /> Table 1 <br /> G i�i' ' s/0 9 <br /> Fig. 2 %'; 5/1.s <br /> 6/1.8 <br /> 7/2.1 <br /> 8/2.4 <br /> 1 11 0 11(3.0 <br /> Hydro International(Stormwater), 94 Hutchins Drive, Portland ME 04102 <br /> Tel: (207)756-6200 Fax: (207)756-6212 Web:www.hydro-int.com <br />