300 - CURB INLET CATCH BASIN 301 - COMBINATION INLET CATCH BASIN 1 302 - COMBINATION INLET CATCH BASIN 2 303 - FLAT OUTLET DRAINAGE STRUCTURE 304 - CURB SUPPORT DETAIL 305 - GRATE AND FRAME DETAIL 308 - CURB OUTLET 309 - UNDER SIDEWALK DRAIN CIP 603 - SEWER CLEANOUT 604 - SEWER MANHOLE 605 - DEEP SEWER MANHOLE 606 - PRECAST CONCRETE MANHOLE (ECCENTRIC) 607 - PRECAST CONCRETE MANHOLE (CONCENTRIC) 608 - MANHOLE FRAMES AND COVERS 611 - RECTANGULAR MANHOLE FRAME AND COVER 703 - VALVE BOX FRAME AND COVER