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PERMIT #: M-1983-060 <br />INSPECTOR'S INITIALS: TC1 <br />INSPECTION DATE: March 15, 2011 <br />OBSERVATIONS <br />This was a regular monitoring inspection conducted by Tim Cazier and Tony Waldron of DRMS. Stanley <br />Thornburg was present for the inspection as well. The Thornburg Pit is located about 2 1/4 miles northeast of <br />Bennett, in Adams County. Kiowa Creek flows in a northerly direction about 1,500 feet west of the permit <br />boundary. The site is permitted for 77.94 acres with a maximum allowed disturbed area of 53 acres. The most <br />recent inspection was in March 2006. <br />Inspection: <br />A permit sign was posted at the entrance to the site (see Photo 1). Centennial Materials is listed on the sign. Mr. <br />Thornburg indicated that Centennial is no longer using the site. He said he would correct the sign. <br />A topsoil stock pile was observed on site and appeared to be out of the floodplain. Most excavated slopes <br />appeared to be near 3H:1 V (see Photo 2). One exception was a recently excavated slope northwest of some out <br />buildings outside the permit boundary. Some minor gully erosion was observed above the highwall, but did not <br />appear to be an immediate threat to the buildings or the boundary fence. Areas not currently being mined <br />appear well vegetated (see Photos 3 and 4). <br />Mr. Thornburg stated the Phase I (Area M7 in the Exhibit C-2 mine plan) area had been reclaimed and released <br />by DRMS. He is currently working under his Phase II mine plan (roughly Areas M1 and M2, but mostly M2 of <br />Exhibit C-2). <br />Some Knapweed was observed near the undisturbed east side of the site. Mr. Thornburg thought the Knapweed <br />was introduced by some recent trail construction east of his property. He said he'd had it sprayed two years <br />ago; but that it is worse now. The knapweed is cited as a problem described on page 1 of this report. <br />A barbed wire fence surrounds the permit area. Mr. Thornburg indicated the east boundary had been recently <br />adjusted and wasn't sure if the fence followed the current permit boundary. There is currently ample buffer <br />between the current workings and the fence. However, DRMS suggested he get the boundary surveyed and <br />clearly marked in the near future to prevent future equipment operators from accidently mining outside the <br />permit boundary. <br />File Review Notes: <br />1. The west edge of the permit area and the unnamed drainage in the north end of the site appear to be in <br />the 100-year floodplain (Zone A - see Attachment A). This is based on the 2007 revised Flood <br />Insurance Rate Map (FIRM). A review of the 112c application indicates no stockpiles will be placed <br />within the floodplain, and only excavation is planned in the floodplain so as to not adversely affect flood <br />elevations. <br />2. The current mine plan appears to limit the active disturbance to 9.6 acres. <br />Current Stimulations: <br />None. <br />Records: <br />The permit anniversary date is September 27 <br />2011. <br />The operator is current with annual fees and reports through <br />Page 2 of 4