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(Page 2) MINE ID # OR PROSPECTING ID # M-t980-228 INSPECTION DATE 2110106 INSPECTOR'S INITIALS RCO OBSERVATIONS This inspection was performed by the Diws~on as part of its monitoring of Construction Materials 112c permits, The operator was contacted about scnedWing tr,e inspection. The operator's representative named on page one was present during the inspection. The concrete batch plant on the site was active at the time of the Inspection No mining has occurred in several years. The level floor areas of the permit are approved for an industrial post-mining land use, and since those portions of the permit area contain a concrete plant and its assoaated facilities, the floor areas pncluding the paved access road) are essentially considered to be reclaimed. The slopes surrounding the pit Floor have been graded and seeded, though revegetation is not fully attained ~n all areas. The slopes are considered to still be in final reclamation. Some areas might need to be reseeded. Several small patches of Canada thistle were observed in the northern end, apparently the same patches observed during prwr inspections. The patches have not spread, and the operator stated that noxious weed control continues to be performed at the site. Control must continue into the future, to the extent that the patches are reduced or ehminatetl, before the slope areas maybe released from the permit. If the thistle infestatior. spreads this may become a problem at a future inspection. There is no problem now. Winter clearing of the working area seems to have included the dumping of bucket loads of snow and gravel beyond the perimeter berm. The permit boundary Ices well below the outer toe of the berm, and the dumped material has not affected lands outside the permit area, but the potential is there. The operator must begin keeping all such materials inside the berm, partly for containment of runoff (when this melts) and partly since it continues to damage outer slopes that are being reclaimed. This is not a problem now, but practices should be changed for the future The concrete hatching requires fuel and other hydrocarbons, plus various other liquids. Several types are stored onsite, including on-highway and off-highway diesels, motor oil and hydraulic oil, hydrochloric acid, "d-Limonene,"and Some unlabeled containers of fluids. For the most part, the vessels containing these fluids are inadequately stored lacking lids, lacking impermeable secondary containment, lacking labels, stored in breached containers, and stained sods Indicating sptllage. Each of the individual conditions listed, and their aggregate conditions constitute a problem at the site, as noted on page one. under the topic s of "hydrologic balance" and'acid or toxic materials.' The operator must correct the various problem areas identified at the site, by removing and disposing of contaminated soils, or properly neutralizing or decontaminating them; placing au flwds to be stored at the sre within impermeable secondary containment of 1 ? 0% capacdy; transferring Flwds which are to remain onsite to labeled, sound and sealable vessels, limiting the number of discarded or emptied vessels stored at the site. If necessary for better containment or control, specific areas could be designated for use of limonene or acids, for fueling or allows the operator time after the ground starts thawing, and is noted on the last page. required to perform the correction AND noi~fy this office, by the date shown. No further items were observed during the inspection. Responses to This inspection report should be tltrected to the Division of Minerals and Geology. 701 Camino del Rio, Room 725. Durango. Colorado 81307, Attn: Bob Oswald; phone no.970-247-5193. I & E Contact Address cc Harry Pose OMG y, ^ CE NAME Marcia Talvitie ^ BL OPERATOR Four Corners Materials Inc. ^ FS STREET PO Box 2707 ^ HW CITYISTATE/ZIP Durango. CO 87302 C HMWMD (CH) ^ SE p WOCD (CH) ^ OTHER