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F <br />1 <br />L <br />L <br />u <br />it <br />d <br />Drain Gauge User's Manual <br />2. Installing the Drain Gauge <br />2. Dig a 7.5 cm (3 in.) diameter by 122 cm (4 ft.) deep <br />hole for the PVC pipe that surrounds the wick section <br />of the drain gauge at the bottom -center of the DCT <br />hole you just made. An orchard auger can be very <br />effective for this portion of the hole because of its <br />long handle. <br />3. Insert the PVC tube (included with your drain gauge) <br />into the wick section hole. This tube will help protect <br />the wick section and prevent contamination of the <br />lower sampling chamber from surrounding soil. <br />4. Pour 12 inches of rock, gravel, or sand into the PVC <br />tube. This will allow for free movement of the effluent <br />water from the Drain Gauge. Be sure not to overfill <br />the PVC pipe with gravel, as the Drain Gauge plate <br />should sit flush on the top of the PVC pipe. <br />5. If an auger was not used to dig the wick section hole, <br />and a significant gap remains between the soil and the <br />PVC tube, pour some additional gravel or sand into <br />this gap, and backfill with soil. <br />E <br />