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PERMIT#: M-1974-004 <br /> INSPECTOR'S INITIALS: ECS <br /> INSPECTION DATE:November 19,2019 <br /> OBSERVATIONS <br /> This was a routine monitoring inspection of the Specification Aggregate Quarry, operated by Martin Mareitta <br /> (MM), conducted by Eric Scott of the Division of Reclamation Mining and Safety (DRMS). The site is located on <br /> the west side of Highway 40 approximately 3 miles south of Golden CO and approximately% mile north of <br /> Interstate 70. DRMS met with MM representatives Julie Mikulas and Phillip Courtney at the site office and <br /> toured the site with them after a brief site safety presentation. This is a 325 acre site which produces <br /> primarily construction aggregate, although there is also an asphalt plant and concrete batch plant located in <br /> the SE corner of the permit area (photo 5). The currently approved post-mining land use for the site is <br /> rangeland. <br /> During the site visit DRMS noted that the site, on whole, appeared to be very well managed and was operation <br /> in compliance with the approved mining and reclamation plans. Dust control was ongoing with both a water <br /> truck and street sweeper during the inspection. The operator has also recently provided documentation from <br /> the State Engineer's Office (SEO) that the main quarry reservoir has been verified as meeting the standards for <br /> a "lined reservoir". This determination addresses several of the potential issues identified during the previous <br /> inspection with respect to the water present in the pit. <br /> One issue was identified that will require corrective action by the operator within the next 60 days. Unused <br /> mining equipment (conveyor sections, etc.) was being stored/staged outside of the permit boundary in the <br /> north-center of the permit near the Heritage Square "visual berm". All mining equipment will need to be <br /> moved to remain within the currently approved permit boundary by the corrective action date listed on the <br /> first page of this report. Care will also need to be taken to prevent the product stockpile from moving outside <br /> of the permitted area in this location. <br /> No other issues were noted during this inspection. <br /> Inspection Contact Address <br /> Julie Mikulas <br /> Martin Marietta Materials,Inc. <br /> 1800 N.Taft Hill Road <br /> Fort Collins, CO 80521 <br /> Page 2 of 3 <br />