During an inspection, it became clear that one major culvert – 140 feet long, 15 feet tall and running under heavily traveled Route 30 – had outlived its expected life. The 10-guage corrugated steel structure was deteriorated and needed to be repaired – with as little disruption to Route 30 traffic patterns as possible.

The estimated flow through this regulator was 85 MGD, with a combined plant capacity of 170 MGD. Local environmental regulations restricted the use of diesel engines to 175 HP or less, and all engine driven equipment was required to be sound attenuated to 50 decibels at 30 feet.