Who do I contact regarding trash and recycling overflow, and other matters that are of immediate concern? Post author By Margaret Lo Post date January 19, 2018 A Who do I contact regarding trash and recycling overflow, and other matters that are of immediate concern? Please contact Facilities customer service at 703-993-2525 if there are any immediate concerns regarding waste and recycling. ← What is single-stream/commingled recycling? Why does Mason have a multi-stream recycling system? → What is the average annual building energy use and cost at Mason?