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about 50 semi -truck loads of dirt. If in a single conical pile it would be approximately 180 feet in <br />diameter 81 feet high. <br />As previously noted, the gully along the east side of County Road 92 was carefully surveyed in 2015 <br />utilizing the same method as the current survey. The calculated volume lost in the 2015 survey was <br />7939 yd 3; the calculated volume lost in the 2018 survey is 8712 yd 3. In the last three years 773 yd were <br />lost from just this one gully. <br />Photo 2. Giant gully, on east side of County Road 92, is over 20 feet deep and 40 feet wide. <br />There are 201 significant gullies within the entire affected 100 acres. Chen's Hill has the greatest <br />number of gullies per acre with 71 total significant gullies and an average spacing of one gully every <br />forty horizontal feet. The largest gully in the East Pit has lost 1386 yd'. There are about 30 gullies that <br />are too wide and deep to jump across or climb down and back up when walking across the side slope. <br />Many of these are large enough to prevent crossing by wildlife and livestock. <br />