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Biosolid production at DG Sanitary District: 6 photos

Published: Tuesday, Aug. 6, 2013 4:45 p.m. CST • Updated: Tuesday, July 29, 2014 11:27 p.m. CST

Nick Menninga, left, general manager of the Downers Grove Sanitary District, along with district mechanics Sam Tatulli, center, and Joe Magiera, discuss how Biosolids are created at the district's Wastewater Treatment Center, 5003 Walnut Ave. on Tuesday, Aug. 6, 2013. (Matthew Piechalak photo)