2014-09-12_REVISION - C1996083 - Laserfiche WebLink

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To prevent mortality of GBCT due to pumping from the East Fork of Terror Creek, the conservation measures are defined as: pumping during the June and July period would require the use of a screened pump intake, with a maximum 1/4 inch size mesh. For the August through September period, when GBCT fry would be present in the stream, pump intakes would be screened with no larger than 1 /16th mesh screen. The screen would not be confined to just the pump intake, but must cover a larger area, such as a cylinder or box design which has at least 5 times the surface area of the pump intake. Bowie must submit the final design for this screening fixture to the USFS and BLM fisheries biologists for their approval. • During the June through September period, if the flows in East Terror Creek drop below the ten year mean monthly flow for October (1.0 cfs), lessee will not pump water from the East Fork of Terror Creek. • To prevent impacts to GBCT fry and fingerlings, pumping would not take place during the base flow (low flow) periods of the year — October through March. • If there are existing roads or disturbance features within the 200 -foot buffer along GBCT habitat streams, then no additional surface disturbance will be permitted within those areas. Maintenance of roads or other existing features must remain within the existing road prism or footprint of the feature being maintained. • The operator shall not store equipment, machinery, or construction materials in any locations that are 200 feet or less from the riparian zones of the streams within the Terror Creek watershed. • No vegetation will be removed from the riparian zone of the streams in the Terror Creek watershed. • During construction or maintenance activities in proximity to the 200 -foot riparian buffer zone, the edge of the buffer zone shall be marked for avoidance by construction equipment and activities. • Within the Terror Creek watershed, only fresh water, free of chemicals or other contaminants, may be used for dust abatement activities. • Within the Terror Creek watershed, additional crossings of perennial streams will not be constructed • The BLM or USFS hydrologist must approve, in advance, the size and composition of riprap material to be used in the East Fork of Terror Creek. • Lessee must report their annual water depletions to the BLM UFO by September 30 each calendar year. This includes depletions that result from surface activities associated with coal mining related activities within the Action Area, regardless of surface ownership. • No surface disturbance, such as road widening or upgrading would occur within 200 feet of GBCT occupied habitat, as measured from the normal high water mark, to protect delineated wetlands or riparian areas and maintain riparian vegetation and eliminate potential effects to the greenback cutthroat trout, unless exceptions were approved by the Authorized Officer. C -3