_INSPECTION - C1981022 (41) - Laserfiche WebLink

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III. COMMENTS-COMPLIANCE Below are comments on the inspection. The comments include discussion of observations made during the inspection. Comments also describe any enforcement actions taken during the inspection and the facts or evidence supporting the enforcement action. The purpose of this partial inspection was to inspect the construction of the Bear Creek vent shaft facilities.Joe Dudash conducted the inspection while Jim Kiger represented the operator. Tom Anderson,the operator's engineer for the project,was also on site.The weather had been dry and warm for several days. The road up Bear Creek canyon was in good condition and was passable.Due to recent snowmelt,a couple of road sections were wet and muddy.However,a dozer was working on these muddy sections of road. The operator was using a fabric underlayment to help stabilize the muddy sections of road. Construction of the vent shaft pad was in progress.Two excavators were digging into the east hillside,where topsoil had already been removed, in a cut and fill operation.The excavated dirt was being screened to separate the rocks from the dirt.The dirt was,then,being placed onto the pad,graded and compacted.A sheeps-foot compactor was on site.Ahead of the excavators,a front end loader was taking off topsoil from the hillside and transporting the topsoil to the south end of the pad area,where a small dozer was pushing the topsoil into a pile for storage.The vent shaft pad will be raised another 6 to 8 feet in height until it is about level with the Bear Creek canyon road. On the north side of the pad,the vent shaft steel collar was being raised and concreted section by section to coincide with the raising of the dirt pad. A 6 foot diameter concrete pipe was installed beneath the raised vent shaft pad to allow Bear Creek to flow underneath the pad.The concrete pipe had been installed in sections.Each sectional joint has a gasket and was grouted to prevent leakage. Currently,the Bear Creek water is still being diverted through a 12 inch diameter pvc pipe that originally had been used to allow for the construction of the concrete pipe.The coffer dam that had been used upgradient of the pad has been removed.Riprap has been installed at the inlet and outlet areas of the concrete pipe. Straw bales and waddles were being used on the downgradient end of the construction site for sediment control. It would be a good idea to extend the line of straw bales and waddles further downgradient,however,since the topsoil stockpile directly above is growing in volume. . The Bear Creek vent shaft construction site was neat in appearance and the construction work was very well organized. The location is in a narrow canyon with not much area to work in. c:/word/elkcreek/insp03O9