By 8 a.m. on Monday, May 10, I had caught half a dozen walleyes from Birch Lake and was waiting in the travel trailer on our Northern Wisconsin lot for a soil tester, onsite installer, and the builder of our planned cottage.When my wife and I bought the lot last December, I promised to share our experience as onsite system customers. In the last column on this topic (July edition), I described the logistical issues of fitting a conventional system on this 100-foot-wide by 200-foot-deep lake lot, fully wooded and with a fairly steep slope.The main question on the table
