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TO: File - 2095 Webber Hills Road <br /> FROM: Stephen Weckman, On-Site Systems Manager <br /> DATE: September 21, 1992 <br /> RE: Septic System Failure <br /> The septic system was installed on August 5, 1966 by Widmer Brothers <br /> under Permit No. 1228. The septic system includes two concrete block <br /> tanks with capacities of 1, 000 and 500 gallons respectively. The <br /> drainfield consists of three trenches 2' wide and between 75' and 100' <br /> long. <br /> The City of Orono has an inspection program for on-site septic <br /> systems. Each septic system is inspected every other year in order to <br /> determine the system conformity, tank condition, drainfield condition, <br /> limiting site factors, and potential for system failure. The <br /> inspection report includes a determination of the system's conformity <br /> based on current Minnesota Pollution Control Agency (MPCA) Regulations <br /> and City of Orono Municipal Codes, request maintenance, if necessary, <br /> or require septic system repair or replacement when the system is not <br /> functioning properly. As the inspections are infrequent, they only <br /> provide a sampling of the system condition. Occasional septic <br /> problems may not be evident at the time an inspection is performed. <br /> Prior to the July 9, 1992 inspection, there is no indication from <br /> previous inspection reports or the septic system inventory card that <br /> the system was likely to fail. The four most recent on-site sewage <br /> treatment inspection reports for the property in question have been <br /> examined. Three inspection reports dated August 1, 1988, July 26, <br /> 1990, and April 29, 1991 all indicate that septic pumping is not <br /> required and the drainfield is dry with no evidence of surfacing. The <br /> septic system is classified as a substandard system not up to current <br /> codes but appears to be designed in accordance with previous codes and <br /> seems to be functioning properly. These reports also note no limiting <br /> site factors. The potential for system failure is between low and <br /> medium and the site capabilities for future expansion are fair. The <br /> July 9, 1992 inspection indicates that tank maintenance is not <br /> required but the drainfield is saturated and visibly discharging <br /> untreated effluent to the surface making the system non-conforming <br /> thus requiring repair within ninety days of the inspection date. <br /> ch <br />