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CERTIFICATION NO.627 <br /> STATE LICENSE NO.394 <br /> PERCOLATION TEST DATA SHEET <br /> Percolation test readings made by S-P Testing,Inc. on 5-16-03 starting at 10:03am. <br /> Test hole location MN/DOT, 1200 Orono Oaks Dr.,Parcel 92E, Orono. <br /> Test hole numbers. Date test hole was prepared 5-15-03. <br /> Depth of hole bottom 12.inches. Diameter of hole 11 inches. <br /> SOIL DATA FROM TEST HOLE <br /> DEPTH,INCHES SOIL TEXTURE <br /> 0 - 8" Topsoil dark brown loam <br /> 8" - 12" Gray brown loam <br /> Method of scratching sidewall is knife. Depth of gravel in bottom of hole is 2 inches. Date and hour of initial <br /> water filling 5-15-03, 9:30am. Depth of initial water filling is 12 inches above the hole bottom. <br /> Method used to maintain at least 12 inches of water depth in hole for at least 4 hours is automatic siphon. <br /> Maximum water depth above hole bottom during test is 6 inches. <br /> Measurement, Drop in water level, Percolation rate, <br /> Time Time interval,min inches inches minutes per inch Remarks <br /> 9:50 prefill 6 <br /> 10:03 10:33 6 2-7/8 10.4 30 min <br /> 10:36 11:06 6 2-7/8 10.4 30 min <br /> 11:11 11:41 6 2-7/8 10.4 30 min <br /> Percolation rate= 10.4 minutes per inch. <br />