December 2017 O&M Newsletter By Maine NewsIn State NewsPosted November 29, 20170 Comment(s) A monthly newsletter for wastewater discharge licencees, treatment facility operators, and associated persons December 2017 In this issue: Calendar Monthly Problem Set / For Practice, December Certification Update – Mid-term Operators to Receive Notice by Email NetDMR Update Is Your Wastewater Lagoon Ready for Winter? Prepping for Cold Tempatures Monthly Problem Set / For Practice Answers, December