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04/21/1999 - letter re: Septic System Site Plan
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04/21/1999 - letter re: Septic System Site Plan
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8/22/2023 3:22:16 PM
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House Number
2125
Street Name
Carriage
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Lane
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2125 Carriage Lane
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Septic
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1011723240037
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2( 25 Ciao atteramiQ, tv — <br /> Westwood Professional Services,Inc. <br /> 104 Marty Drive,Suite 3 <br /> Buffalo,MN 55313 <br /> Phone:612-682-2587 <br /> Fax 612-682-2639 <br /> Toll Free:1-888-682-2587 <br /> April 21, 1999 Email:wps®westwoodps.com <br /> Steve Bohl <br /> Bohland Development <br /> 420 Upland Lane <br /> Plymouth, MN 55447 <br /> RE: Septic System Site Plan for Lot 6, Carriage Hill, Orono, Minnesota. <br /> Dear Steve: <br /> This proposed on-site septic system was designed for a 5 bedroom home, with an estimated flow of 750 <br /> gallons per day. The system best suitable for this area will he 418 If. of 10"Gravelless trench installed <br /> no deeper than 13" below the existing ground level. The seasonal high water table was found at a depth <br /> of 4.1 feet in the septic area. Two 1300 gallon septic tanks will be adequate for a system of this size. <br /> The site in which this system is proposed has an average existing ground slope of 5%. Percolation rates <br /> for this particular site were found to be between 16-19 MPI <br /> An alternate septic system has been shown on the plan to show that there is enough undisturbed area on <br /> the lot to support another septic system. This system will need to be a mound system 12"of sand under <br /> the rockbed at the upslope side. Mottled soils were found at a depth of 24 inches and the average slope <br /> of the area is 6%. This system will not need to be constructed unless the primary mound fails. <br /> Certain precautions will need to be made to protect the areas in which the above referenced septic <br /> systems are proposed. Both primary and alternate septic areas have been or will be staked off. It is <br /> recommended that safety fence be placed around both of the sites for protection during construction of <br /> this project. It is critical that the soil is not disturbed before, during, and after construction of the <br /> system. <br /> These system should treat the septic effluent effectively if the systems are installed properly and are <br /> maintained properly. It is recommenced that the septic tanks be pumped once every two years. This <br /> will reduce the chance of solids reaching the system. It is also recommended not to use excessive <br /> amounts of chlorine, soaps, and chlorine products which can kill bacteria in the septic tanks. This <br /> bacteria is needed to treat the septic effluent <br /> Designing the Future Today_since 1972 <br />
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