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Page 4 of 6 <br />seepage problems. It is my understanding that you have added <br />fill at this end of the system, and there now is at least 4-60 of <br />fi11 over the trenches. <br />10. The seepage that was occuring during my inspection on April <br />9, 1986 appeared to be flowing from the near the ends of each <br />trench and perhaps was seeping along the interface between the <br />new and old fill. It appeared that the seepage location was <br />further east than the ends of the trenches and therefore may be <br />traveling some distance underground, perhaps 2-31, before <br />surfacing. The seepage then seems to be soaking into the <br />topsoil within about 15' of the point of origin. Seepage of <br />effluent to the surface is generally considered a sign of system <br />:failure. I also noted that the distribution box has no fill over <br />it, but is in a basin such that there did not seem to be a <br />discharge from the area of the distribution box cover when I <br />visited the site. <br />Based on the above information, the following conclusions can <br />reasonably be made: <br />a) The drainfield system is failing, on an intermittent basis, to <br />treat and dispose of the effluent discharged to the system from <br />the pump tank. <br />b) The probable causes of such failure are likely related to the <br />capability of the soil to accept the given inflow, due to: <br />1. saturated soil condition during certain seasons <br />2. possible inflow of groundwater into the septic tanks and <br />pump tanks, adding excessive amounts of water to the system. <br />c) The system was sized for a 3-bedroom, 450 gallons per day <br />home, and based on the soil conditions as reported by the site <br />evaluator, Percor Inc., the system in general meets Orono's <br />requirements for construction of the system, except: <br />1. Manholes for ease of access and maintenance were not <br />installed in the first two tanks, and <br />2. A high-water alarm does not appear to have been <br />insta 1 1 ed. Neither of these items will have an individually <br />significant effect on the functioning of the system. <br />d) Since a persistent seasonal high water table was noted just <br />west of the system, and my soil boring on 4/9/86 found mottling <br />and water table at a depth of about V -2 1/2' at this location, <br />