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<br /> <br /> <br />. <br /> <br />GADD' <br />SURFACE WASH <br />AGITATORS PER <br />FILTER <br /> <br />@AOD 2 <br />SURfACE W~..sH <br />SUPPLY PUMPS <br /> <br />@ADD AN <br />IN.LINE <br />MIXER <br /> <br />13"~~WA.s(., <br /> <br />+<c~~\, \N,.\l <br /> <br /> <br />) <br />/ <br /> <br />\ <br />) <br /> <br />.,. \A1..ll pl"j lo'-~+;O".s <br /> <br /> <br />~. <br />r' ADD A BACKWASH "REPLACE ALL <br />.::;: FLOW RATE CONTROL FILTER MANIFOLD <br />SYSTEM VALVES W/PNEUMATIC <br />(2.0" {.k.....-t1O.6...) ACTIVATED BUTTERFLY VALVES <br /> <br />i':'(',": .~r"::'l~;,",':'~J. .(t..r <br /> <br />Note: Tlc,,~s will---.. y\v,~.:;.<;~~ <br /> <br />!:)"" <br /> <br />': ~ ~ ~ <br /> <br />"l/?- <br /> <br />REPLACE.BACKWASH <br />.:J,' SUPPLY PIPING w/20" <br />STEEL PIPE <br /> <br />APPENDIX A <br />----- <br /> <br /> <br />REPLACE 3 COllECTION <br />TROUGHS W/4 COLLECTION <br />TROUGHS IN EACH FILTER <br /> <br />... <br />.~. <br /> <br /> <br />,., REPLACE EXISTING <br />.. AND ADD NEW <br />BACKWASH SUPPLY <br />PUMP <br /> <br />J <br /> <br />D <br /> <br />FIGURE 4 <br />WATER TREATMENT PLANT <br />BASEMENT FLOOR 10;'."'1 <br />::H"Ll <br />SEPTE'.~SER 1980 <br />