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de -sander back to the pit so that the back-flush water can be returned to the pit. The location of the lines is shown <br />on Map 24. The trenches were dug with a backhoe or trackhoe. During the excavation process suitable plant <br />growth media was removed and windrowed adjacent to the trench and then replaced on top of the sub -soils returned <br />to the trench. <br />MR15-290 2.05-97.8 10/02/15 <br />