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, Westwood Professional Services, Inc . <br /> 104 Marty Dnve,Suite 3 <br /> Buf(alo,MN 55313 <br /> Phone:612-682-2587 <br /> Fax 612 682-2639 <br /> npril2l, 1999 rouF�ee issa_bs�-�ss� <br /> Email:wpsC�?wesiwoodps.com <br /> SIeVe �0�1� <br /> E3ohland Development <br /> a2o u�i��,d �.��,e <br /> Piy�„�uti,. Mrv ssaa� <br /> RE: Septic System Site Plan for Lot 3, Carriage Hill, Orono, Minnesota. <br /> • Dear Steve: <br /> This propcised on-site septic system �vas designed for a 5 bedroum home, with an estimated flo�v of 7�0 <br /> �,alions per d�i��. �1-he syslcm bcst suitablc for this arca �vill bc �11�; It: of 10'� Gravelless U�ench installed <br /> no decper than 13" below the existing ground level. 'I�he scas��nal high ��ater table was found at a dcpth <br /> of 4.I feet in the Septic area. Two 1300 gallon septic tanks �vill be adeyuate for a system of this sire. <br /> �f he site in which this system is proposed has an average e�istin�ground slope of 7%. Percolation rates <br /> for this particular site were found to be bet�veen 15-29 MP1. <br /> An alternate septic system has been designed to show that there is enough undisturbed area on the lot to <br /> support another septic system. This system was also designed for a 5 bedroom home. The seasonal <br /> water table was found at a depth of 48 inches, this site would also require 418� If. of 10" Gravelless <br /> trench. "I�his system will not need to be constructed unless the primary system 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 tl�at safety fence be placed around both of the sites for protection during construction of <br /> this project. [t 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 /> Desigmny the Fuwre loday_since 1972 <br />