August 2019 O&M Newsletter By Maine NewsIn State NewsPosted July 30, 20190 Comment(s) A monthly newsletter for wastewater discharge licencees, treatment facility operators, & associated persons August 2019 In this issue: Calendar Monthly Problem Set / For Practice, August Management Candidate School Wastewater Operator School MRWA Offers Classes for Certification Exam Prep Certification Update Monthly Problem Set / For Practice Answers, August
