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2"Schedule 40 <br /> 1 1/"schedule 40 for sprayers <br /> 7 <br /> eTli <br /> 2% 5:1 5:1 I 2% <br /> Slope"` Slope ^"- Slope Slope <br /> -1.1 <br /> ~ <br /> S lope \ \�s <br /> Wheel Wash Plan <br /> 15 15 20' 15 ( 50' <br /> t <br /> Elevation View <br /> .Water level <br /> 1: - 1:1 Slope <br /> 12 <br /> Section A-A <br /> N.T.S. <br /> Figure 4.3 Wheel Wash <br /> Notes: <br /> 1. Asphalt construction entrance 6 in. asphalt treated base (ATB). <br /> 2. 3-inch trash pump with floats on the suction hose. <br /> 3. Midpoint spray nozzles, if needed. <br /> 4. 6-inch sewer pipe with butterfly valves. Bottom one is a drain. Locate top pipe's invert 1 foot <br /> above bottom of wheel wash. <br /> 5. 8 foot x 8 foot sump with 5 feet of catch. Build so can be cleaned with trackhoe. <br /> 6. Asphalt curb on the low road side to direct water back to pond. <br /> 7. 6-inch sleeve under road. <br /> 8. Ball valves. <br /> 9. 15 foot. ATB apron to protect ground from splashing water. <br /> February 2005 Volume ll— Construction Stormwater Pollution Prevention 4-11 <br />