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F <br /> To: File, 4220 Sixth Avenue North <br /> From: Steve Weckman, On-Site Systems Manager <br /> Date: August 21, 1992 <br /> Subject: Site Evaluation/Septic System Design Dated August 16, <br /> 1992 <br /> � <br /> The site evaluation and septic system design submitted by <br /> Bob Koch for the address above has been rejected. The purpose <br /> of this memo is to explain the reasons for the rejection. <br /> Soil borings by Mr. Koch indicate that the trench system he <br /> has designed will not maintain the required three foot vertical <br /> separation between the bottom of the distribution area and <br /> limiting soil characteristic identified by soil mottling as <br /> described in MPCA Rules Chapter 7080.0060. Based on this <br /> encroachment to the seasonally high water table, the system <br /> design is non-conforming by City of Orono and MPCA standards. <br /> The proposed drainfield site is also severely limited by a <br /> 14$ slope. The site is located on a lower area of the property <br /> which would receive a large amount of drainage. <br /> The septic report does indicate that other drainfield sites <br /> are available. Based on past inspections on this property, other <br /> sites appear to be available that would be less limited by slope <br /> and would be more suitable for a mound. Therefore, I recommend <br /> that further site evaluation be performed to locate a more <br /> suitable drainfield site. <br /> A variance will not be granted by the City which would cause <br /> a treatment area to encroach within the required three foot <br /> separation while alternatives are available. <br /> lsv <br />