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III rww� _ Western Water & Land, ]nC. ,p October 14,2020 Ms.Amy Yeldell Environmental Protection Specialist Colorado Division of Reclamation,Mining and Safety 101 South 31d, Suite 301 Grand Junction,CO 81501 RE: Notice of Partial Completion of Reclamation and Request for Release of Reclamation Responsibility,Logan Wash Mine,Mine Permit M-1977-424 Dear Amy: Western Water&Land,Inc.(WWL)as consultant for Occidental Oil Shale,Inc.(OOSI),holder of mine permit M-1977-424,Logan Wash Mine,has prepared this letter to request reclamation bond release of certain affected lands under the Logan Wash Mine permit no. M-1977-424. OOSI has partially completed site reclamation activities at the Logan Wash Mine. Logan Wash Mine is located approximately 12 miles northeast of De Beque, Colorado. The main mine portals are located in Section 25, Township 7 South, Range 97 West. A general site location map for the Logan Wash Mine is presented in Figure 1. Figure 2 shows the main mine facilities. This letter contains a thorough description of reclamation history at the mine and concludes with a summary and formal request to release reclaimed areas(Section 3.0). 1.0 RECLAMATION HISTORY According to Exhibit E of the Reclamation Plan (1981) for Logan Wash Mine, 134.7 acres were approved for disturbance within the permit area with an actual disturbance of 113.6 acres. The Evaporation Pond and associated Retort Water Pipeline were constructed in 1984, but were not added to the mine permit disturbed area.The associated disturbed acreage from these facilities was added to the permit in 2008 under Amendment No. 1. See Table 1 for a summary of acreage reclamation status.Reclamation areas are shown in Figures 3A,3B and 3C. Table 1 shows the Evaporation Pond and Pipeline acreage as Area 23.Annual reports have shown that since at least 1985 the Evaporation Pond and Pipeline was initially a 14.8-acre disturbance. The 1985 annual report shows that approximately 5.1 acres of this acreage was reclaimed prior to the report's published date in spring 1986.Table 1 also shows the disturbed acreage for the Soil Barrow Area that was added in 2005. Based on this total acreage and reclamation performed, Table 1 shows that the estimated actual disturbed acreage was approximately 135.2 acres and of this amount, 61.7 acres are not to be reclaimed because Logan Wash Road is to remain in place for other users and the guard gate area was transferred to Chevron.This results in an approximate total of 73.5 acres requiring reclamation. Applications in Earth Science 743 Horizon Court Suite 330,Grand Junction,CO 81506 Phone: (970)242-0170 Fax: (970)242-0270