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PERMIT 4: M-1991-035 <br /> INSPECTOR'S INITIALS: ECS <br /> INSPECTION DATE: September 9,2021 <br /> OBSERVATIONS <br /> This inspection was conducted by Eric Scott of the Division of Reclamation Mining and Safety(Division/DRMS). <br /> DRMS was accompanied on this inspection by permittee representative Andre Laroche and consultant Bruce <br /> Humphries. The Bluestone Pit is located in Jefferson County, east of Hwy 93 and west of the Rocky Flats <br /> National Wildlife Refuge. The site is permitted at 257 acres with a post-mining land use of wildlife habitat. <br /> Weather at the time of the inspection was sunny and hot. DRMS met permit representatives at the site <br /> entrance from Westgate Road at approximately 13:00 and proceeded into the site. <br /> The site is well into final reclamation, and documentation from the SEC) has been provided to confirm that the <br /> existing pond at the north end of the site has been designated as "pre-81", and therefore a permanent <br /> augmentation plan will not be required for this feature. No other areas of exposed groundwater were <br /> observed during this inspection. <br /> Reclamation vegetation is well established across the site at this time, and elk were observed in the permit <br /> area during the inspection. No areas of erosion were noted during this inspection, even on embankment <br /> slopes. <br /> The only factor holding back the final release of the permit at this time is the presence of a significant amount <br /> of noxious weed species, as stated on the first page of this report. Knapweed, mullen, and Canada thistle <br /> were observed in areas of the permit— primarily along the access road and in the northern portion of the <br /> permit. Knapweed appears to be the most extensive species at this time, and significant efforts may be <br /> required at this point to eradicate it within the permit area. Knapweed was also noted during a 2016 DRMS <br /> inspection, so this issue has been ongoing for at least 5 years. <br /> Some minor trash items were observed during the course of this inspection that will need to be removed from <br /> the site, however, no other issues were observed. <br /> Inspection Contact Address <br /> Andre Laroche <br /> Lafarge West,Inc.c/o Lafarge North America Inc. <br /> 1687 Cox Blvd, Suite 300 <br /> Golden,CO 80401 <br /> Page 2 of 3 <br />