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QUARTERLY SEDIMENTATION POND INSPECTION REPORT ~® <br />G~~~ <br />CDMR Rule 4.05.6(17) <br />Mine: Southfield o~ ~:~~- <br />NPDES ID. No.: Pond #4 O\J~S~~~gai~`~ <br />Inspection Period: Third Quarter 2007 <br />Inspection Date: September 29, 2007 <br />General Description or Reference to Site Plan: <br />This pond is located on the north east comer of the refuse disposal area. It is a sediment control <br />facility receiving run-off from the refuse disposal area. The primary discharge gate has been disabled <br />in the open position, ensuring that the pond functions as a "pass-through" faality. <br />EMBANKMENT <br />1). Adequacy of the vegetative cover. <br />2). Erasion forming Gullies: <br />3). Is wave action causing erosion: <br />On the Upstream embankment? . <br />At the principal spillway inlet? <br />le Moderate F~~ew''~~ Poor <br />Extensive Some /Few) None <br />4). Erosion of the downstream toe of the embankment? <br />Cause of erosion can be attributed to: <br />Yes <br />Yes <br />Yes <br />No <br />No r/ <br />No !/~ <br />5). !s seepage occurring through the dam? Yes No P/ <br />Could this seepage cause potential instability? <br />PRINCIPAL SPILLWAY <br />'h). Is the principal spillway system in working ordeR <br />2). Is the inlet free of debris and restrictive material? <br />3). Is the discharge outlet free of restrictive material? <br />4). Is erosion occurring at the discharge outlet? <br />Evaluate the severity: Extensive Moderate <br />Yes ~ No <br />Yes I/ <br />No <br />Yes 1/ <br />Yes <br />Just starting None <br />No <br />No T/ <br />Page 1 of 2 <br />