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Backfilling will be conducted via dozer to the surface highwall. The cost to reclaim the <br /> portals is itemized in Exhibit L, Safeguarding Underground Workings. For the portals <br /> that will receive permanent cover,they are expected to be backfilled with <br /> approximately 25 feet and approximately 950 cubic yards of material will be used in <br /> the 20 x 15' portals and approximately 250 CY will be used in the 8' x 8' portal as <br /> shown on the table above. The time to complete portal reclamation is approximately 1 <br /> to 2 months. <br /> No bat survey has been conducted in this area and no bats have been observed in the <br /> existing Revenue Tunnel, however, the Colorado Division of Parks and Wildlife <br /> (DPW) stated that the installation of a bat gate at this portal was acceptable in its <br /> comment letter on the original permit application. <br /> 3.5 Ponds, Stormwater Collection and Diversion Ditches <br /> Reclamation of stormwater control features will be consistent with the post <br /> reclamation land use. Stormwater control features required to maintain stormwater on <br /> commercial areas will comply with OSMI's industrial stormwater permit. Stormwater <br /> features associated with diverting stormwater around reclaimed Environmental <br /> Protection Facilities (i.e., TSFs, Mine Water Treatment Facility) and other disturbance <br /> areas will be maintained until these features have stabilized and vegetation has been <br /> established. <br /> Sediment Pond#1 will remain in place as a sediment control feature during <br /> reclamation of the Atlas TSF. The mine water ponds # 1, 2, and 3 will remain after <br /> reclamation, as shown on Map F-1. These features will not be backfilled or regraded <br /> as they were constructed to blend in with the existing contours at the site. Mine water <br /> will continue to be delivered by gravity in HDPE pipes to the mine water pond 1 and <br /> the water will flow into Ponds 2 and 3 for passive treatment prior to discharge to <br /> Exhibit E Reclamation Plan E-9 <br /> Amendment 02 <br /> Updated August 2022 <br />