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u <br />Ci <br />11 <br />I <br />i <br />P <br />Ci <br />C <br />'J <br />1� <br />0 <br />n <br />�1 <br />i <br />L <br />u <br />Drain Gauge User's Manual <br />2. Installing the Drain Gauge <br />Installation - D• - • - <br />Depending on whether or not you are using the "Dis- <br />turbed Sample" method or "Intact Soil Monolith" method <br />described earlier, there are also two different methods for <br />installing the DCT (divergence control tube): <br />Method 1 Disturbed Sample method): <br />1. Set the empty DCT on top of the plate segment of the <br />wick section. The outer edge of the DCT should fit <br />inside the lip of the plate. <br />2. Repack the soil you removed from the DCT hole. <br />Take care to repack the soil layers in the same order <br />that they came out, and at the approximate density as <br />the adjacent undisturbed soil. <br />3. Place and pack the soil from the root zone. You may <br />want to mound additional soil on top of the drain <br />gauge to compensate for soil settling. Replace the <br />cover vegetation, if desired. Some users keep subsur- <br />face soil moist and allow it to settle for a week prior to <br />replacing the topsoil and vegetation. <br />4. Backfill and pack soil around the outside of the DCT. <br />5. Place and pack the soil from the root zone. You may <br />want to mound additional soil on top of the drain <br />gauge to compensate for soil settling. Replace the <br />cover vegetation, if desired. Some users keep subsur- <br />face soil moist and allow it to settle for a week prior to <br />replacing the topsoil and vegetation. <br />9 <br />