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MMRR Lluarry, M-2004-067 <br />Response to Jan. 21 Adequacy Review <br />March 23, 2005 <br />Page 11 <br />More serious variations from the monitoring standards will <br />require immediate notification of the DMG and study to <br />determine the source or sources of concentrated uranium. A <br />serious variation is defined as any variance exceeding the <br />monitoring standard for two or more sequential monitoring <br />periods. <br />Fuel/Oil Storage. Diesel fuel may be stored at the site to provide the <br />operator with a ready source of fuel for equipment, reducing the frequency <br />of visits required by a tanker truck to keep the site operating. <br />The intent is to locate the fuel tank in the processing area as soon as <br />processing equipment, stockpiles, parking, a scale house and other <br />essential functions are suitably located and sufficient room exists inside <br />the processing area for other uses. This may require the operator to rely <br />on a tanker truck or off-site fueling until mining is underway and has <br />established a pit floor immediately adjacent to the initial processing area. <br />The operator will in any case locate the fuel tank in a safe location <br />conveniently accessible to dedicated on-site equipment. <br />Primary containment will be an engineered impoundment enclosing the <br />tank site, with a volumetric capacity of at least 150% the capacity of the <br />tank or combined tanks. Secondary containment will be on-site sediment <br />basins and clean-up in the case of a spill. The operator will conform to the <br />DMG's Spill Prevention, Containment, and Countermeasures (SPCC) <br />policy, which we adopt and incorporate herein by reference. The applicant <br />will adhere to all regulations pertaining to SPCC plans concurrently with <br />the installation of a tank at the site. <br />6.4.5. Exhibit E. <br />Plant Growth Medium. As noted in Exhibit I, Soils, no soil present on the <br />MMRR Quarry site has a topsoil horizon exceeding 3 inches. The typical <br />topsoil profile across the site ranges from 0 to 3 inches at the maximum. <br />Recovery of topsoil is also a difficulty on steep slopes, though most <br />pockets of significant topsoil may be assumed to reside in less steeply <br />sloped areas. For these reasons, as the DMG has acknowledged in its <br />adequacy letter, the amount of salvageable topsoil in the permit area is <br />limited. A best-case topsoil recovery scenario on the site is believed to be <br />in the range of 5,000 cubic yards. <br />For 2 inches of topsoil to be replaced over the entire 39.95 acres of <br />disturbed area, a minimum of 10,700 cubic yards of topsoil is necessary. <br />According to this calculation, the site is deficient by approximately 6,700 <br />cubic yards of topsoil for implementation of the reclamation plan. In <br />