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2002-07-08 P & R Packet
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2002-07-08 P & R Packet
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<br />water flow from escaping around the inside edges of the can. This will reduce water flow around the edge. <br />Place the plastic lid on top of the soil inside the can. The plastic lid should not fill the entire inside area of . <br />the can. The lid is used to help protect the surface structure of the soil when you pour the water into the <br />can. <br /> <br />After setting up the perc test, pour the water from the soda bottle into the can (you should have an inch of <br />water in bottle) and make sure you pour the water onto the lid. The first inch of water will wet the soil and <br />eliminates any variation in soil moisture. Pour a second inch of water into the can. This should be done <br />immediately after the initial inch. Note how long it takes the soil to absorb this second inch of water. The <br />second inch of water determines the infiltration rate of your soil (Table 3). Record the infiltration rate and <br />class of your soil. <br /> <br />Table 3 -Infiltration Rales <br /> <br />Infiltration Rate <br />(minutes per inch) <br /> <br />Infiltration Rate <br />(inches per hour) <br /> <br />Infiltration Class <br /> <br /><3 <br />3 to 10 <br />10 fo 30 <br />30 to 100 <br />100 to 300 <br />300 to 1,000 <br />1 ,000 to 40,000 <br />>40,000 <br /> <br />>20 <br />6 to 20 <br />2 to6 <br />0.6 to 2 <br />0.2 to 0.6 <br />0.06 to 0.2 <br />0.0015 to 0.06 <br /><0.0015 <br /> <br />Very Rapid <br />Rapid <br />Moderately Rapid <br />Moderate <br />Moderately Slow <br />Slow <br />Very Slow <br />Impermeable <br /> <br />REFERENCES <br /> <br />1. Halverson, B., Nassauer, J., and Roos, S. 1997. Bringing Garden Amenities into Your <br />Neighborhood: Infrastructure. for Ecological Quality. University of Minnesota, Department <br />Landscape Architecture. <br /> <br />2. Dindorf, C.J., Henderson, C.J., And Rozumalski, EJ. 1999. Landscaping for Wildlife and <br />Water Quality. Minnesota Department of Natural Resources. <br /> <br />3. Dindorf, C.J., Henderson, C.J., And Rozumalski, EJ. 1999. Landscaping for Wildlife and <br />Water Quality. Minnesota Department of Natural Resources. <br /> <br />OTHER SOURCES <br /> <br />Adleman, M.I., And Collins, J.E 1998. Uvable Landscape Design. Cornell Cooperative <br />Extension Service. <br /> <br />The Monitoring Tool Box. 1998. Land Stewardship Partnership. <br /> <br />Low Impact Development ~anual. Prince George's County. <br /> <br />Soil Quality Test Kit Guide. 1999. United States Department of Agriculture-Natural Resources <br />Conservation Service. <br /> <br />20 <br />
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