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PROJECT: Ahern Road Fueling Station February 28, 2022 <br /> Job No: 20-544 Ross P.Shod, Civil Engineer <br /> i <br /> 12' <br /> r <br /> TRENCH CROSS SECTION (NOT TO SCALE) <br /> See Exhibit Sheets for Further Details <br /> Installation Specifications For Trenches <br /> Trenches must be installed with trench bottoms level within 2 inches deviation over the length of the trench. <br /> Install lateral pipe level,with orifices facing up. Drill orifices with a sharp new bit and clear out any shavings left <br /> behind. (pre-drilled pipe may be used) Prior to testing assure drain rock is cleared away from each orifice, leave <br /> orifice shields off for a run-out test to adjust squirt height along each lateral (adjusted for hydraulic variance from <br /> lateral to lateral),schedule Engineer and County inspector(as required)for testing and certification. <br /> After testing has been approved, install all orifice shields,complete drain rock installation,cover with filter fabric <br /> and install final soil cover and seed. Request a final inspection from the county inspector. Cover soil shall be <br /> native loam material 12"over the trench drain rock and shall be slightly mounded over each trench to <br /> accommodate settlement. Disturbed area shall be protected by placement of straw mulch and appropriate <br /> seeding for the area. <br /> Page 10 Of 11 <br />