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1 <br /> ASPHALT <br /> SPECIALTIES CO . <br /> 10100 Dallas St. • Henderson, CO 80640 • (303)289-8555 • Fax: (720)289-7707 <br /> TECHNICAL REVISION SUBMITTAL <br /> Date: March 18, 2019 <br /> To: Mr. Eric Scott, P.G. <br /> Environmental Protection Specialist <br /> Department of Natural Resources—Division of Reclamation, Mining, and Safety <br /> From: Mr. Greg Geras, P.G. <br /> Land Resource Manager <br /> Asphalt Specialties Co., Inc. <br /> Permit No: M-2015-030 <br /> Site: Chavers Mining Resource <br /> Address: 12367 County Road 8, Fort Lupton, CO 80621 <br /> Re: Permit I I2c Technical Revision No. 2 (TR-02) <br /> Asphalt Specialties Co., Inc. (ASCI) is submitting this Technical Revision No. 2 (TR-02) to update <br /> Exhibit C-2 — Mine Plan Map for the Chavers Mining Resource (Site). In 2018, Kerr-McGee Oil & <br /> Gas Onshore LP (a subsidiary of Anadarko Petroleum Corporation) plugged and abandoned (P&A) <br /> two (2) oil & gas wells, along with the associated flow lines, and removed the gathering line which <br /> transported gas from the wells off-site. In addition to revising the Mine Plan Map, ASCI is also <br /> submitting an update to the Mining Plan - Approximate Mining Timetable to reflect the current <br /> conditions and anticipated mining schedule. <br /> 6.4.3 EXHIBIT C-2 MINE PLAN MAP <br /> As a result of the P&A and removal activities, the following features have been revised on the <br /> Exhibit C-2—Mine Plan Map for the Site. <br /> CHAVERS 14-18A Well: Located at the south end of the Site where Cells 1, 5, and 6 <br /> converge, the well and associated flow line have been P&A. The 75-foot mining setback and <br /> 200-foot backfill radii are no longer applicable and have been removed from the map. <br /> HSR-WATADA 11-18A Well: Located near the center of Cell 3, the well and associated <br /> flow line have been P&A. The 75-foot mining setback and 200-foot backfill radii are no <br /> longer applicable and have been removed from the map. <br /> 98-6-3 Gathering Line: Formerly beginning at the HSR-WATADA I 1-18A well and <br /> traversing the Site southwest between Cells 3 and 4, this gathering line has been removed and <br /> is no longer depicted on the map. <br />