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T� 84'estwood Professional Services, Inc . <br /> /�pfl� ��, ��)�)�) 104 Marty Drive,Swle 3 <br /> BuHalo,MN 55313 <br /> Pillar Homes vtio�e:e�z-esz-isa� <br /> fax 611 681-2639 <br /> Steve Bohl rou F�ee i-aas-6az zss� <br /> 74� � ��3�Ce Sl�ef;l Email:wpsC�westwoodps.com <br /> Wayzata, MN <br /> RE: Septic System Site Nlan f��r L��t d, F31ock 2, Crystal Creek, Orono. <br /> Dear Steve: <br /> This proposed on-site septic s�stcm was designed for a 4 hedruom home, with an estimated flow of 600 <br /> gallons per day. Due to mottlecl soils at a depth of 20" in the primary site, the primary will need to be a <br /> mound system with 16" of sand under the rockbed at the upslope side. The site in which this s�stcni is <br /> proposed has a average existin�� ground slope of 6%, and percolation rates ranging from 10-28 MPL The <br /> rock bed size will be 10 feet wide and �0 feet long with the overall dimensions of the primary mound <br /> being 76.0 feet long and 4?.0 feet wide. <br /> An alternate septic system has been shown on tl�e p(an to show that there is enough undisturbed area on <br /> the lot to support another septic system. This system will also need to be a mound system. Mottled <br /> soils were found at a depth of 21 inches and the average slope of the area is 6%. This system will not <br /> need to be constructed unless thr primary mound fails. <br /> The original perc tests and soil borings that were completed by others and were done in 1989. <br /> Additional soil tests were completed to verify the depth to the seasonal water table. <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 /> critical that the soil is not disturbed before, during, and after construction of the system. <br /> These systems should treat the �eptic ef�fluent 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 /> wil] reduce the chance of solids reaching the mound system. It is also recommended not to use <br /> excessive amounts of chlorine, soaps, and chlorine products which can kill bacteria in the septic tanks. <br /> This bacteria is needed to treat the septic effluent. <br /> If you have any questions in regards to this design, 1 will be happy to answer them. I can be reached at <br /> (612) 682-2587. <br /> Sincerely, <br /> WESTWOOD PKOFESSIONAL SLRVIC:ES, INC. <br /> i��z�v� ����'��� <br /> Bcrnie Miller <br /> Septic Site Designer <br /> MNCA Lic. No. 43 <br /> Designing the Fuwre Today_since 1972 <br />