2021-05-19_INSPECTION - M2000082

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PERMIT#: M-2000-082 INSPECTOR'S INITIALS: ECS INSPECTION DATE: May 13,2021 OBSERVATIONS This inspection of the East 8t" Street Operation, a 48.75 acre 112c sand and gravel operation, was conducted by Eric Scott of DRMS in response to a surety reduction request submitted by the operator and received by DRMS on May 11, 2021. DRMS was accompanied on this inspection by operator representatives John McFarland and Jack Miller. DRMS sent out the required notices for the surety release request on May 17, 2021. Mining has been completed at the site, which is owned by the Greeley Urban Renewal Authority, and reclamation is well underway. In general terms, the site will be reclaimed as two, unlined, open water areas, divided by an irrigation ditch. An unpaved access road will remain around the perimeter of the site and between the excavated areas. The slopes of the unlined excavations will be no steeper than 3:1 H:V, and the shoreline and upland areas will be reclaimed with the seed mixes specified in the reclamation plan. A Technical Revision (TR02) to clarify some of the reclamation specifics and define the existing configuration of the site was approved by DRMS on March 19, 2021. During the inspection it was noted that the re-sloping of the excavated areas and all earthwork was complete, with the exception of the east pit floor, and some minor repair work that will be required on the north and west walls of the west pit due to some erosion/slide features. It was also noted that despite the recent rainfall and the wet spring this year, that the east pit was almost totally dry, and that the west pit only appeared to have approximately five feet of water in the bottom. DRMS cannot explain why these unlined pits remain so dry, especially given the proximity to the Cache la Poude River immediately adjacent to the south of the site and the irrigation canal bisecting the excavated area. If the east pit remains dry, DRMS will require that the bottom of the pit be leveled, topsoil replaced and the excavation fully vegetated. DRMS noted that the vegetation on site is almost entirely kochia at this time, however, some of the reclamation grasses were observed to be sprouting across most of the site. The kochia may provide temporary cover and stabilization, however, the operator will need to maintain the site and manage the vegetation as needed to insure that the reclamation grasses become established and are not overcome by weedy species. DRMS also noted the presence of an occupied raptor nest located near the SW border of the permit. Due the existing state of vegetation across the site, the remaining repair work needed in the west pit walls, and leveling and revegetation of the east pit floor, DRMS will support lowering the required bond for the site from $270,000 to $61,870 when the public comment period expires. This is a reduction in the existing bond of$208,130. A summary of the CIRCES bond calculation will be included with this inspection report. Insuection Contact Address John McFarland/Jack Miller Superior Oilfield Services Co.,LTD 2986 W.29th St.#12-13 Greeley,CO 80631 Enclosure: CIRCES Estimate Summary Page 2 of 3