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2.05.3 <br />Run-off from the outslopes of the unit trail loadout was not contained in sediment <br />ponds. There are nine SAE areas (SAE1 through 9) where the run-off was <br />filtered through a sediment fence before it left the permit area. Sample points for <br />the SAEs were located near the sediment fences. A demonstration was made <br />that the vegetation is adequate to control erosion on SAE numbers 1 through 9. <br />The SAE 9 grass filter demonstration begins on page Exh-8-198. The SAE 1-8 <br />grass filter demonstration begins on page Exh-8-231. <br />Run-off from the loadout disturbance is directed into two sediment ponds which <br />contain the run-off from the batch weigh loadout and most of the disturbance to the <br />east. Run-off from a transfer tower and the disturbance associated with a conveyor <br />support is not contained in sediment ponds (SAEs 10 and 11). SAE 10, the transfer <br />tower north of Bowie Road and associated disturbance requires a 40 foot long silt <br />fence, straw log or straw wattle. SAE -11, the conveyor support south of Bowie <br />Road and a material storage area requires a 26 foot long silt fence, straw log or <br />straw wattle. Design of the sediment fences is shown in Volume III, Exhibit 8 on <br />page Exh-8-189. <br />Run-off from the material storage area and its outslopes located east of the old <br />power plant does not go through a treatment facility such as a sediment pond (SAE <br />12). This area requires a 15 foot long silt fence, straw log or straw wattle. Design of <br />the sediment fence is shown in Volume III, Exhibit 8 on page Exh-8-197. <br />Run-off from the Hubbard Creek vent shaft pad does not go through a treatment <br />facility such as a sediment pond (SAE 13). Run-off from this pad will be filtered <br />through a 40 -foot long sediment fence. Design of the sediment fence is presented <br />in Volume III, Exhibit 8 beginning on page Exh-8 - 209. Flow will be routed to the <br />sediment fence with ditches and berms as shown on Map 39. <br />Run-off from the Hubbard Creek pump station does not go through a treatment <br />facility such as a sediment pond (SAE 14). Run-off from this pad will be filtered <br />through a 50 -foot long sediment fence, straw logs or straw wattles. Design of the <br />sediment fence is presented in Volume III, Exhibit 8 beginning on page Exh-8 - 234. <br />Run-off from the pump station and filter building located near the Deer Trail Ditch <br />will not be contained in a sediment pond (SAE 15). The buildings are located below <br />Bowie Road in a location where sediment pond construction would be difficult. Run- <br />off from the area disturbed by the pump station and filter building will be filtered <br />through a sediment trap such as straw bales, silt fences, straw logs, straw wattles <br />or other approved devices. The location of the sediment trap for the buildings is <br />presented on Maps 20, 21-1 and 21-3. Design of the 70 -foot long sediment trap is <br />presented in Volume III, Exhibit 8 beginning on page Exh-8 - 236. <br />MR -168 2.05-42- 11/14 <br />