2023-09-13_PERMIT FILE - M2023033A (6)

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There will be more than enough material stockpiled from on-site materials to fulfill reclamation needs as the groundwater lakes take up the majority of the reclamation area. Table E-2 shows the volumes of topsoil and overburden required for reclamation and the material volumes that will be stripped and stockpiled. As shown, there is an excess of topsoil that is stripped versus what is required for reclamation. The stripped overburden does not meet the amount required for backfilling the pits. However, there will be an excess of topsoil and sand that will be more than enough to meet these requirements. These calculations were made assuming that the site has a uniform two feet of topsoil and two feet of overburden across all areas. Topsoil will be replaced in an average two foot layer across all non-pond disturbances, while overburden will be used to backfill the pit slopes from 1.5H:1 V to 3H:1 V. Table E-2 Reclamation Volumes Material Available on Pod Area Topsoil Overburden Topsoil Overburden Backfill (acres) Stripped(CY) Stripped(CY) Required(CY) Required(CY) 1 39.2 126,340 126,340 22,510 253,330 2 14.9 48,050 48,050 13,870 141,330 3 30.0 1 96,930 96,930 10,030 301,730 Screening 3.1 10,030 -- 10,030 -- Berm Area Totals 84.1 271,360 1 271,360 87,870 696,400* *Overburden reclamation requirements not met by the stripped overburden.There is an excess of topsoil (183,490 CY)and sand(>2M CY)present at the site that can be used to augment the backfill requirements. Overburden reclamation requirements will not met by the stripped overburden alone. Approximately 425,000 CY of excess topsoil and/or sand will be used to augment this shortage. There is an excess of topsoil and sand present at the site that can be used to augment the backfill requirements. The excess volume of topsoil and sand required for backfill are shown in Table E-3. While most of the sand that is excavated will likely be sold, BURNCO will keep at least the minimum required amount per pod for reclamation backfilling stockpiled on site. Table E-3 Additional Backfill Material Requirements Minimum RequirementsAugmented Backfill Pod 1 Pod 2 Pod 3 Total Volume C Volume Volume Volume Existing Overburden(from 126,340 48,050 96,930 271,320 Table E-2 Excess Topsoil(calculated 103,830 34,180 86,900 224,910 from Table E-2 Min.Sand Requirement 23,160 59,100 117,900 200,160 Total(CY) 253,330 141,330 301,730 696,390 Ewing Gravel Pit August 2023 E-2 Lewicki&Associates