PIT F EXCAVATION PREPARATIONS: Workers inside the large white tent the east side of Ascon near Magnolia Street are preparing for excavation of Pit F. The air treatment system, which will operate 24/7 during excavation, may be turned on and off as sound mitigation is completed. Site security continues 24/7, and personnel that monitor Pit F equipment and systems will be on location overnight.
You may see: Workers conduct minor grading in select onsite areas near the large white Pit F tent to prepare for excavation work. You may see flashlights or headlights from a limited number of vehicles at night conducting inspections and providing security at the 38-acre Site. Workers, materials, and large equipment, like manlifts, small cranes, water trucks, forklifts, materials, and storage bins, may be arriving or be removed from the Site. This includes workers, materials and large equipment entering the Pit F tent. No excavation work is occurring this week. This activity includes turning on equipment like the air treatment system for operational checks, testing entry chamber doors, and movement of large bins in and out of the tent as a process and equipment check.
Multiple trucks will be arriving onsite with roll off bins and clean soils for use during active work. The roll off bins are being staged within the Ascon Site prior to excavation work. Haul trucks bringing clean soils into Ascon will depart empty from the Magnolia Street gate.
You may hear: A low-level hum for the air treatment system, which has been mitigated with 20-foot and 8-foot sound panels and sound blanketing in addition to the 16-foot sound wall along Magnolia Street. Acoustical engineers have conducted sound metering in multiple neighborhood locations to confirm compliance with local ordinances for residential areas. This system is required to operate 24/7 during the duration of Pit F work to maintain a vacuum environment and treat air inside the tent for workers and our neighbors. You may hear periodic sounds during work hours, like vehicle backup signaling required for worker safety. Workers will minimize backing up vehicles when possible and when it is safe for workers and equipment.