Hi, does anyone can help me with this problem? I have a question about calculating TSS when I try to solve a problem in by Michael R. Lindeburg's practice book (Chapter 28, Q1)." A town of 10,000 people (125 gpcd) has its own primary treatment plant. What mass of TSS should the treatment plant expect? The solution assumes 800 mg/l total solids. How does this number come out? Anywhere I can refer to? Thank you very much.