Water System Leak Detection Services , Woodridge, IL

These specifications include requirements for all planning, design, deployment, materials, transportation, equipment, and labor necessary to complete the leak detection and location services. The water system includes approximately 140 miles of watermain and approximately 2,200 hydrants (full system) consisting predominantly of cast iron and ductile iron main. The scope includes a minimum of two (2) full system Leak Detection Surveys (generally one in the Spring/Summer and one in the Fall/early Winter) approximately six (6) months apart. Each survey shall include complete leak detection and location survey of the full system using sonic detection to listen on all hydrants and strategic main line valves and selected B-Box service valves using sensitive sound intensifying instruments. If a leak is suspected, the location will be further investigated with an electronic correlator and ground microphone to pinpoint the exact leak location. The leak location shall be marked with blue paint. The contractor shall record all defective system components found during the surveys such as hydrants, valves and b-boxs as well as any map errors that are noted during the course of the surveys.