2015-04-15_INSPECTION - C1981033

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April 13, 2015 C- 1981 - 033 /13ear Mine MLT Surface Water Monitoring 4.05.13; Drainage — Acid and Toxic Materials 4.05.8; Impoundments 4.05.6, 4.05.9; Stream Buffer Zones 4.05.18: • The Sediment Pond was dry, with the exception of a small, shallow pool near the spillway (Photo 3). The primary spillway gate was closed on the inlet end. The emergency spillway was lined with cobbles and vegetation, and was clear. • The eastern half of the sediment pond appears to have been incised into the natural ground, while an embankment was constructed around the south and west sides. The western limb of the embankment appears to be a continuation of the flood control dike. Inslopes and outslopes of the pond and embankment were well vegetated, and appeared to be stable. • The Edwards Portal Spring was flowing at a steady trickle. We were unable to locate the outlet end of the pipe, on the eastern bank of the treatment pond. The Treatment Pond was full, and discharge was occurring from the primary spillway (we were unable to see the pipe inlet). The emergency spillway pipe protruded from the pond bank approximately 1.5 feet above the water. The treatment pond embankment is extremely well vegetated, and stable. • There are two monitoring wells at the site, which will need to be reclaimed: AA -1 between the slide mass and the river (Photo 1), and AA -3 (Photo 4), north of the treatment pond. • A flood control dike was constructed decades ago to protect the property from being inundated by the river. The dike is densely vegetated, with a number of mature trees growing out of it. SLIDES and DAMAGE - Rule 4.12: During the inspection, a section of shale broke loose from the sheer scarp which stands above and behind the landslide mass (Photos 5 and 6). The material appeared to fall straight down the face, and no material came up and over the slide mass. REVEGETATION — Rule 4.15 Vegetative Cover; Timing: A weed contractor has been hired by the Division to control the noxious weeds within the disturbed area. No Whitetop or Canada thistle was observed on this inspection, but it may also have been too early in the year for the plants to be sprouting. Tamarisk has been treated three times at the site: Fall 2013, and Spring and Fall 2014. Some of the cut stumps that were treated appear to have been dealt a severe blow. Other stumps were re- sprouting with vigor, and did not appear to have been hindered by control efforts (Photo 1). FISH and WILDLIFE — Rule 4.18: • Large frogs were heard croaking in the sediment pond, and a pair of ducks was swimming in the treatment pond. We inadvertently startled a pair of Canada geese at the river's edge. ENFORCEMENT ACTIONS /COMPLIANCE No enforcement actions were issued as a result of this inspection, and none are pending. Number of Partial Inspection this Fiscal Year: 8 Number of Complete Inspections this Fiscal Year: 3 Page 3 of 6