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Flow rates from the drainage blanket will be monitored with a weir at or near the toe of the toe <br />buttress to ascertain the performance of the drainage blanket and verify that the underdrain is not <br />becoming pressurized. <br />7.3 Vegetative Soil (2.05.3(5)) <br />Due to relatively steep site conditions, little true topsoil is present in the RPE East refuse pile area. <br />The uppermost soil horizon(s) of colluvial soils stripped from the refuse pile foundation area will <br />be stockpiled as vegetative soil for future reclamation needs, or will be immediately placed on <br />the face of the refuse pile as it reaches design grade as part of contemporaneous reclamation. <br />Vegetative soil stripped from the RPE East area to be stored for future use will be placed in a <br />stockpile in a more gently sloped area west of the RPE East as shown on the permit drawings (the <br />North RPEX Soil Storage Area or the South RPEX Soil Storage Area), placed on an area of the <br />refuse pile that is ready for reclamation, or in a stockpile on the north side of Highway 133 in the <br />existing North Soil Storage Area (NSSA), or other approved soil storage area on MCC property, <br />where the soil will be protected from erosion, compaction and contamination. Vegetative soil will be <br />removed after clearing and grubbing of the refuse pile area and will removed at a time when erosion <br />can be minimized. Stockpiled soils will be seeded with MCC's approved permanent seed mix to <br />• prevent erosion. <br />• <br />P:\Mpls \06 CO\26 \06261003 MCC Refuse Pile Site Review & Permit \WorkFiles\Permit Application \Text \2010- 04- 19_RPE East Permit Application.doc3 1 <br />