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' The required length of fence should be calculated azsuming a flow depth of one foot. Actual <br />• fence installed should be a minimum of 1.5 feet to allow freeboard and a factor of safety on <br />permittivi[y. <br />' The sediment fence should be installed in accordance with the manufacturer's recommendations. <br />Designs azsume regular inspections and maintenance. <br />To verify the effectiveness of the sediment fence, EFCI will sample runoff from the site. Given, <br />however, that the mine site is inactive, and sampling must occur during or immediately <br />following a storm even[, sampling will be limited by practial constraints and may not occur <br />immediately. <br />If sampling indicates that the sediment control systems are not effectively treating the runoff, <br />EFCI will revise and upgrade the drainage control system. <br />3.0 SAE REQUEST <br />Given the limited size of the reclaimed trailer/stockpile disturbance area, the previously <br />discussed sediment control measures which will effectively prevent significant adverse <br />downstream water quality impacts, and the lack of any underground mine water discharge in <br />[he area, EFCI respectively requests DMG approval of a small area exemption for this area. <br />• <br />r <br />C:k.rVtuon~SAEDOC <br />.!"795 J:SV~m Re~•ised <br />