Job #3304 Delta WWTP Phase 1

STATEMENT OF PROBLEM

1.) No Project logistic plan with haul roads, caused production loss and poor site access.

2.) Schedule bust for water-tight testing, created sequencing issues for available work areas.

3.) No Aeration Tank excavation plans prior to excavation, caused major production loss to concrete team because of very limited access. 

4.) Poor to no excavation protection, caused 3 month delay at Headworks Building and flooding and Aeration Tank.

ROM Production loss for Aeration Tank estimate would be atleast 25% or $580K
ROM for other delays or sequencing partial included in Insurance claim under job 3267
 

ROOT CAUSE

COURSE OF ACTION

1& 3.) No real solution was available, access was unavailable to Aeration Tank East, West and North by allowing Hoffman to excavate  without providing concrete a haul road.

2.) Work on areas available and or start new area of work if possible. 

4.) No solution, caused many delays or stoppage to work. 

LESSON FOR FUTURE PROJECTS

1&3.) Have Project logistic and sequencing plan for each job.

2.) Schedule to include testing durations.

3.) Have a good excavation plan that includes protection for rain and weather events.