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PERMIT#: M-1981-148 <br /> INSPECTOR'S INITIALS: ECS <br /> INSPECTION DATE:January 24,2020 <br /> OBSERVATIONS <br /> This was a monitoring inspection of the Chieftain South Mine, a 98.5 acre 112c clay mine permitted by General <br /> Shale Brick. This inspection was triggered by a citizen complaint of excessive windblown dust from the site <br /> onto adjacent residential properties during recent periods of high wind. The complaint was received via e- <br /> mail by the Division on January 13, 2020. DRMS contacted the permittee to set up an inspection of the site, <br /> and was informed during that call that additional erosion control measures (hydro-seeding, tackifier, and <br /> matting) were being installed on the week of January 20. DRMS scheduled a site inspection for Friday January <br /> 24, to confirm that the work had been completed. <br /> DRMS met with site representative Jason McGraw on the morning of January 20 to tour the site and document <br /> site conditions. As can be seen in the attached photos 1- 10, the seeding and erosion control work has been <br /> recently completed. The soil stockpiles created by the excavation of the new surface drainage ditch, as well as <br /> some other exposed areas of the site along the east and south boundaries of the permit area have been <br /> addressed. The site entrance area (photo 1) has also been recently improved. This erosion control and <br /> seeding should significantly reduce or eliminate the issue of windblown dust from the site in the future. <br /> It should also be noted that ongoing residential development and expansion of the subdivision near the <br /> southwest corner of the mine has also resulted in large areas of recent excavation and soil stockpiles that have <br /> not been stabilized and may result in blowing dust (photos 9 and 10). Due the stabilization work recently <br /> completed by the permittee and documented in this report, DRMS will consider the recent compliant of <br /> windblown dust resolved. <br /> No active mining was taking place during the inspection, and Mr. McGraw stated that the mine had been <br /> utilizing materials from the existing stockpiles for the past several years (photos 2 and 3). <br /> No other issues of concern were noted during this inspection. <br /> Inspection Contact Address <br /> Jason McGraw <br /> General Shale Brick, Inc. <br /> 1845 W. Dartmouth Ave. <br /> Denver, CO 80110 <br /> Page 2 of 4 <br />