Rainfall

Precipitation in the form of water (usage includes snow).

Ramming

A percussive hammer is attached to an open end casing, which is driven through the ground. The spoil within the casing is removed to leave an open casing.

Ranking

To assign a relative position to competing items.

Ratepayers

Terminology used by lawmakers to refer to utility customers responsible for paying for service.

Re-Engineering

All aspects of upgrading the performance of existing collection systems. Structural re-engineering includes repair, rehabilitation and renewal. Hydraulic reengineering covers replacement, reinforcement, flow reduction or attenuation and occasionally rehabilitation.