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EXHIBIT D - MINING PLAN The area covered by this application is phase 2 of a thirty year, six phase mining plan. Phase 2 will begin with removal of topsoil from the 12.2 acres of extractable area and stored separately in the overburden storage areas noted on the photomap. The overburden removal will be contracted to Bob Faucher who will use a 10 yard International Harvester scraper and a D7 Cat. A front end loader may also be used in the stripping process, though its primary use will be gravel removal. Sand and gravel may also be removed with a drag line. The depth of the overburden ranges up to 6 feet and consists of a dark brown clayey sand. The thickness of the gravel ranges from 18 to 22 feet followed by gray claystone. The pit will be wet year round therefore a 20 horsepower, six inch pump will be used for dewatering. The discharge water will be pumped from a settling pond into the Big Thompson River at the southern end of the extraction area. Approximately 1700 gpm of water is pumped from a prior pit for washing and is returned to the existing settling ponds near the office and equipment area. No water from the washing operation is discharged into the river. Mined material will be hauled by truck to the existing crushing, washing, and sizing plant by way of the haul roads noted on the Mining Plan (Exhibit C). Temporary truck crossing signs will be placed on Wilson Avenue when it is necessary to use the high water haul road. This will be the only time dirt or mud may be deposited on an improved road. If the deposit becomes excessive, it will be removed. The extraction area will be a wet pit; therefore, it should not be necessary to water down any active areas other than haul roads for dust control. It is estimated that 130,000 to 150,000 tons of sand and gravel will be extracted each year to complete the operation, including reclamation within five years. Final grading and seeding as part of the reclamation plan will be completed within the last three to six months, unless weather conditions prohibit entry into the area.