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2.05.3 <br />Light use roads will be located to minimize downstream flooding. Run-off <br />from the light use roads must flow through significant vegetation before its <br />reaches any stream or leaves the permit area. The vegetation will filter <br />sediment from the run-off and slow or stop the flow. No empirical <br />demonstration of the effectiveness of the vegetation filter is presented. <br />However, a visual inspection of the area surrounding the light use roads will <br />confirm it is unlikely the light use roads will cause damage to fish, wildlife or <br />other environmental values or cause additional contributions of suspended <br />solids to steamflow or to run-off outside of the permit area. <br />Light use roads will not cross flowing steams, wet areas or ephemeral <br />channels where a culvert would minimize the probability of disturbance of the <br />hydrologic balance. Therefore, no culverts are or will be installed forthe light <br />use roads. <br />No surfacing will be utilized for the light use roads. The light use roads will <br />be maintained adequate for the intended use of the roads. Alight use road <br />damaged by a catastrophic event will be repaired as soon as is practicable <br />after the damage has occurred. <br />• The light use roads used for monitoring are typically pre-existing jeep trails <br />that can be identified on Map 9, Hydrologic Monitoring Location. <br />The majority of the traffic on the light use roads is comprised of all terrain <br />vehicles (four-wheelers) or small trucks. The light use roads were used <br />during 1995 and 1996 to gatherenvironmental baseline information and were <br />found to be constructed to adequately support the volume and weight of the <br />vehicles utilized. <br />County road 4365 lane ends at the south side of the bridge over the Fire <br />Mountain Canal. A private road extends from the end of the County road to <br />Pond K. This light use road, including the county road segment, is <br />approximately 1,400 feet long with an average grade of 7% and a pitch grade <br />of 18%. The road is used to access the batch weigh system and to monitor <br />pond K. This existing light use road will not be reclaimed. <br />During 1999 a light use road was constructed to access a drill site in <br />Freeman Gulch. A vent opening will be developed on the drill site, therefore <br />the light use road will be utilized to monitor the vent opening and site. The <br />light use road is approximately 2,600 feet long with an overall average grade <br />of 5%. The first 1,600 feet has an average grade of 10%. The next 300 feet <br />. has an average grade of -16%. The next 350 feet has an average grade of <br />TR-27 <br />2.05 - 26 - 8/03 <br />~) PPRouEO <br />$/zz~°~ <br />