2006-287 - Laserfiche WebLink

Home Browse Search

EXHIBIT "A" 1 RELOCATE 4" AND 8" SCUM LINES Add $3,010 .00 LOCATION : 30" Secondary Clarifier Effluent to the Automatic Backwash Filter The existing 4" Scum line and the existing 8" WAS line running between the new clarifier and the fitter have a center line elevation of 12 . 80' . The new 30" effluent line has a centerline elevation of 13 .25' . The existing lines were lowered below the 30" line utilizing mechanical joint 45 degree bends with accessories . (4 each 4" MJ 45 and 4 each 8" MJ with megalugs and labor. ) 2 CLARIFIER / FILTER ALIGNMENT Add $23983 .00 LOCATION : 30" Secondary Clarifier Effluent ( 30" x 16" Tee, Spool Piece, & 30" 90 Degree Bend) The east / west centerline dimension of the new Clarifier No. 3 and the new Backwash Filter are offset approximately 20" . Referring to Drawing M7 , the makeup of the 30" Tee, the 30" spool piece, and the 30" 90 degree bend is approximately 64" . The Contract Drawings show the 30" pipe from the 90 degree bend at the Clarifier installed over to the center of the filter. Due to the 5'4" offset additional fittings are required . The 30" influent pipe (the 90 degree bend and embedded slab pipe at the filter) will be turned on a 45 degree angle out from the filter. ( 1 each 30" MJ 45 degree bend with megalugs and labor.) 3 30" PIPE / DUCTBANK CONFLICT Add $ 10, 580 .00 LOCATION : 30" Secondary Clarifier Effluent to the Automatic Backwash Filter Existing electrical ductbank is located in the same location as the new 30" effluent from the new Filter. The pipe will be relocated to avoid the conflict with the ductbank. (2 each 30" MJ 45 degree bends and pipe relocation labor. ) 4 CLARIFIER INFLUENT ELEVATIONS Add $39012.00 LOCATION : 20" Secondary Clarifier Influent Pipe elevation problems : The new 20" clarifier influent pipe elevations are shown on the drawings at differnet elevations . Due to the different elevations and the location of the existing pipe that the new pipe ties into, the space needed to make the connection needs to be increased . Excavate more of the existing pipe and cut the pipe to install the new piping . ( 1 each solid sleeve and labor. ) 5 PISTA GRIT - HEADWORKS COATING REPAIR Add $950.00 The Special Coating installed in the Pista Grit Chamber ( installed on the original project) had delaminated from the concrete. The old coating was removed , the damaged area was sandblasted and new coating applied .