The South Metro Interceptor Rehabilitation project occurred in and beneath the busy streets of San Diego, California's rapidly growing downtown area. This 108" reinforced concrete interceptor, owned and operated by the City of San Diego, Metropolitan Wastewater Department, had been severely corroded by noxious gases and fluids since its initial installation. Therefore, to prevent further corrosion and eventual leakage into the ground water supply, the City contracted with J.R. Pipeline Company to install an experimental corrosion resistant PVC liner on 6,308 lineal feet of the interior pipe. The scope of work included:

Repair of an existing T-lock PVC liner system installed by others
Rehabilitation of 8 manholes and 1 steel shaft
Repair of 30 lineal feet of a tributary 84" reinforced concrete pipe
Performance of numerous Internal Sewer Television Inspections

This project proved quite challenging as the PVC liner system required that J.R. pipeline construct a custom built spray rig. Additionally, the Contract Documents required that the line remain operational at all times although from midnight to 5 a.m. each day, the flows were reduced at an upstream Pump Station so the contractor's crews could gain safe access. The Contract Documents also prevented the contractor from working for a period of 6 weeks between Thanksgiving and New Years due to historically congested traffic patterns in the downtown area during the holiday season.

DACM Project Management provided project management, estimating, scheduling, submittal management, and change order negotiation services to its client, J.R. Pipeline Co. Inc., during the construction of the South Metro Interceptor Rehabilitation project. More specifically, DACM Project Management was responsible for the day-to-day project management issues which arose while coordinating within the strict contractual constraints which included a construction moratorium, limitations on the hours work could occur, traffic control and safety issues, and the requirement that the sewer line remain operational throughout the construction period. We were also responsible for preparation of a baseline schedule, identification of issues creating monetary and scheduling impacts; monthly schedule updates, preparation of monthly pay applications, change order pricing, extended general conditions analyses and time extension requests.