Official Proceedings of the ... Annual Convention, Volume 35

activated sludge aggregate airport American Society amount asphalt average brick Broad Street Broad Street Subway building cent Chairman charge Chicago Chicago River chlorine City Planning combined sewers Committee construction cost Court Department diameter drainage effluent electric engineers feet field filler flow garbage girder rail grade highway Imhoff tanks inch increase installed joints laid Lake Michigan lamps land less lines located manufacture ment method miles municipal operation oxygen park pavement paving Philadelphia pipe for storm plain concrete pipe plane plant playgrounds Portland Cement present PRESIDENT KLORER problem rail railroad reinforced concrete pipe removal River runways sand Sanitary District sanitary sewers satisfactory Schuylkill River screenings sewage treatment sewerage sludge Society for Testing specifications square miles standard station steel storm sewers street lighting subway surface tank tion tracks traffic transportation unit utilities water supply