Manhole Inflow Reduction 2024

Adjust 179 existing manholes and to the finished grade of the pavement surface using district-supplied manhole covers and ring sets (pamrex d400 security manhole). The contractor shall dip manhole and record distance between the invert elevation and rim elevation adjust 19 existing cleanouts to finished grade of pavement surface using existing cleanout covers and ring sets. Cleanouts vary in depth 1’ to 4’.