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System Design <br />for Paul Boyke <br />of Lot 1, Block 1, Lauranne Woods <br />Orono, Minnesota <br />1. Percolation Rate, Type of System. <br />13.0 minutes per inch for the primary site (holes 1-4). Shallow Trench System. <br />2. Proposed Flow Rate. \ / <br />bedrooms (� 150 G.P.D. = 6E?0 G.P.D. ?A <br />3. Soil Treatment Area Needed. <br />Use 2.0 factor x 600 G.P.D. = 1200 Sq. Ft. • <br />4. Size and Number of Trenches. <br />J a no <br />)Ktrenches 3 feet wide and 100 feet long = 1200 Sq. Ft. These trenches would <br />be ,2-18 inches deep in the natural soil and be spaced a minimum of 7.5 feet <br />apart center to center. <br />5. Drainfield Rock Needed. <br />(e "-cubic yards of rock is needed to have 6 inches under and 2 inches over a <br />4 inch distribution pipe. <br />6. Septic Tanks. <br />Two septic tanks of at least 1000 and 750 gallons are needed. In addition, it <br />may be necessary to have a third pumpinq tank of�gallons depending on the <br />final elevation of the septic tanks in relation 6� h� arainfield area. <br />7. Additional In=orr^aLiun. 1600 Yk-,Ara1r"'M" <br />All construction and materials must adhere to the provisions of the City of <br />Orono. All grading and construction traffic must be kept from the primary and <br />the alternate drainfield sites. <br />If any additional information is needed, please contact me. <br />Sincerely, <br />PERCOR, INC. <br />(1� be <br />PCA certified <br />