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� f March 19th, 2015 From: Dale Denn HomeStead Septic 1108 Goldenrod Lane Shakopee,MN 55379 MPCA License# 583 C: 612-310-7887 Email: Homesteadseptic@outlook.com To: Loren Konen Metro West Inspections 689 N Medina Street Loretto, MN 55357 Regarding: 517 Ferndale Road Request for Septic System Setback Reduction to a Wetland. HomeStead Septic has been retained by Denali Homes to design a septic system. There are particular site 'Hardships' in siting a primary septic system that requires a reduction in the City of Orono minimum setback ordinance to a Wetland. This letter sites the particular hardships per the request of the Septic Inspector. The requested setback reduction applies to both the Primary Mound, the Septic Tanks, and the Pump Tank. A setback reduction is also being requested 'for the record'regarding an Alternate Site that has been established and needs a variance to be used if ever needed.. The setback distance to any one component of the septic system is the 12.5 minimum that has been allowed and granted by the Minnehaha Watershed District. However, after having returned to the site to re-evaluate and adjust for a 5 bedroom septic system, the actual setbacks are as follows: (Please refer to the design drawing or the Survey): The minimum setback distance is 16 feet, in two instances where the dual sandbed is at 16 feet to the wetland. The other portions of the dual sandbed are 17 and 25 feet from the Wetland. The minimum setback established in the field regarding the Rockbeds is 34 feet. The next minimum distance to the rockbed is 44 feet. The upper split zone of the Mound has the rockbed at greater than 50 feet. The septic tank and pump tanks could be set at 25 feet to the Wetland. This should work forgravity feed out of the home and allows the setting of the tanks up in the upper front side of the home making them more accessible for pumping and maintenance. Regarding the Mound,the following Hardships were encountered: 1. Being a 'Lot of Record' there is limited room in general for the placement of a Mound Septic that utilizes the best available and least disturbed soils. 2. Length of Contour: The length of the contour needing to be on the same elevation is not long enough to accommodate the Mound in one intact unit. The Mound has to be split into two equal parts and set on the landscape at differing locations and elevation. This hardship requires more space than a single Mound. 3. Degree of Slope: The slope is fairly steep where the Mound needs to be and thus requires a significantly bigger'footprint'than a Mound on lesser slopes. A 3:1 final slope grade is the minimum