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Primary Treatment Renovations
DP 7285
September 22, �
Primary Treatment Renovations, DP 7285
Change Order Information
Change Order 11:
Install new elevated concrete slab under existing
concrete walkway on east side of Tank No. 3—
Cost: $55,445 (plus T &M work to remove failed
concrete)
Contract Status:
NPaid to date: $6,229,000 (58% of Total)
^'Total CO's(13): $542,813 (5.3%)
Sed. Tank No. 3 Walkway Repair
• Concrete fails during
installation of anchors
for supports
• All walkways tested. No
other major corrosion
Sed. Tank No. 3 Walkway Repair
• Complete Project Solutions
design repair method —
separate &independent
slab
Sed. Tank No. 3 Walkway Repair