Laserfiche WebLink
'/VU7i/JAJpV <br />TV <br />rH*S''7s"‘ <br />SEEN <br />mOHlIilED <br />SYSTEM DESIGN <br />FOR DENNIS KUMLIN <br />OF PROPOSED LOT 2 <br />1. Percolation RatP, Type of System. <br />7.2 minutes per inch on the primary site. Pres! <br />2. Proposed Flow Rate. <br />3 bedrooms 0 150 G.P.D. * 450 G.P.D. <br />3. Mound Rock Bed Area Needed. <br />0.83 factor(using 12” of clean sand under the rock) x 450 G.P.D. <br />= 375 Sq. Ft. = 10 feet wide by 37.5 feet long, <br />4. Dike Width Requirements. <br />1.52 basal width factor x lO'wlde rock bed » 15.2 feet minus the 10 foot <br />bed = 5.2 feet on the downslope side. However, for a 3:1 slope minimum <br />needed for a 3 foot high mound on an approximate 8% sideslope on the <br />downstream side, 12 feet ia needed so the 3:1 requirement controls. ■= <br />5. Septic Tanks. <br />Two septic tanks, the first of at least 1000 gallons and the second of <br />at least 750 gallons are needed. In addition, a third pumping tank is <br />needed to house the pump needed for pressure distribution. An alarm device <br />is also needed to warn of pump failure. <br />6. Distribution. <br />Distribution is to be by pressure through 3 perforated laterals spaced <br />40 inches apart in the rock bed. <br />7. Additional Information. <br />All construction and materials should adhere to the provisions of the <br />City of Orono. The alternate area must remain undisturbed should it ever <br />be needed for use. The proposed driveway should be kept to the west as <br />far as possible and runoff should be diverted from the drainfield area. <br />If any other information is needed, please contact me. <br />Sincerely, <br />PERCOR, INC. <br />Mark S. Gronberg ^ <br />PCA certified