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• 2.05.3 PR-O6 A~ PRaVE r, ~~IS~o'z A light use road will be constructed on the west end of the project to provide access for train crews and a minor amount of contruction. The road is approximately 460 feet long with an average grade of 7% with a maximum pitch grade of 10%. This light use road will be reclaimed. The light use roads used for monitoring are typically jeep trails that can be identified on Map 9, Hydrologic Monitoring Location. Run-off from the light use roads must flow through significant vegetation before its reaches any stream or leaves the permit area. The vegetation will filter sediment from the run-off and slow or stop the flow. No empirical demonstration of the effectiveness of the vegetation filter is presented. However, a visual inspection of the area surrounding the light use roads will confirm it is unlikely the light use roads will cause damage to fish, wildlife or other environmental values or cause additional contributions of suspended solids to steamflow or to run-off outside of the permit area. The majority of the traffic on the light use roads is comprised of all terrain vehicles (four-wheelers) or small jeeps. The light use roads were used during 1995 and 1996 to gather environmental baseline information and were found to be constructed to adequately support the volume and weight of the vehicles utilized. No part of the light use roads are located in the channel of an ephemeral stream where the upstream watershed is over one square mile. The light use roads are not located in any intermittent or perennial streams. All of the light use roads used for monitoring are pre-existing roads. Therefore, the location, design and construction specifications listed under Rule 4.03.3(2) & (3) do not apply. The light use roads do not cross flowing steams, wet areas or ephemeral channels where a culvert would minimize the probability of disturbance of the hydrologic balance. Therefore, no culverts are or will be installed for the light use roads. No surfacing will be utilized for the light use roads. The light use roads will be maintained adequate for the intended use of the roads which is access to environmental monitoring stations. During 1999 a light use road was constructed to access a drill site in Freeman Gulch. A vent opening will be developed on the drill site, therefore the light use road will be utilized to monitor the vent opening and site. The 2.05-25- 12101