03-07-1977 Planning Minutes - Laserfiche WebLink

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MINUTES OF A PLANNING CCHUSSION ^CE^ING HELD M/VROl 7, 1977 - PAGE 3 mounds. According to the Minnesota Health Department, Wisconsin Health Department, and just id>out every other health department in the country, once you get the surfacing of this effluent, your system is considered failed and it is a health hazard. JIM ANDERSON REPORT (continued) Mr. Anderson referred to Orono's Ordinance established in 1961 and still in effect now which states that the system has to function in a sanitary manner and will not create a nuisance nor a danger to the safety of any domestic water supply. So it fails. What other solutions are there. Obviously, you can't put a conventional system in here either because they will flood out also and the shallow trench system won't work either. The only altemative that I can come \jp with rigjit now is a holding tank. Ihat means that it is sealed conq[>letely and once every so many weeks when it needs pumping out you have to have someone come out and pump it. a There is only so much that you can determine from a percula- tion test. If you feel that there is an area that m^ have some problems, the only way you can figure out if you are going to have problems or not is to actually look at it. This involves taking soil borings and running a perculation test. It is an unattractive measure to use as tne sole criteria for determining whether or not we want to put in a soil absorption system. In addition to the other factors that 1 was taking about (heij^t of the water t^le, water table evidence, texture of the soil), location deserves ‘equal wei^t and probably more. What you are attenpting to find is tne rate of water. Sometimes the soil is saturated whm you make the test; sometimes it isn't. Depends on the soil. If you do the perculation test ri^t, you can make thathe sort of answers that you want as easily as you can get answers that don't pass. This is what is the matter with the perc test and the reason \itiy it shouldn't be the sole criteria for \diich to base your answer. It doesn't simulate the conditions that you have under these soil absorption systems. There are a lot of o^er factors that enter into this. If the perc test is done properly, it will give you a relatively good idea of vdiat sort of problems you will have with your soil. Mr. Muhich inquired if a satisfactory perc test could be made during the winter months. Mr. Anderson explained that conditions in the winter would make it virtually iiipossible to get prq>er readings on these tests. Mr. Anderson stated that the mound systems are usually larger than the conventional systems. They take up more area and are designed to utilize more of the soil around it. It is part of the treatment aspect. We reconmend that the minimum lot size be between 2-2H acres. On that ^•2h acres, we reconmend that you have your initial site, us room to put in a replacement if it becomes necessary. iL