Question:I’ve been pumping septic tanks, but I’m thinking about getting into the installing business. In April you wrote about ponding and the biomat, then you mentioned sequential distribution. What does this mean? Answer:First, I want to stress that if you get involved with installing systems, be sure and get adequate training. Most states have educational programs for onsite sewage treatment systems. Your local health department or zoning office can give you information on available training programs. I have written about the advantages of sequential distribution in the past, but now may be a good time for a refresher. When trenches
