2009-02-10_INSPECTION - M1977140

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(Page 2) MINE ID # OR PROSPECTING ID # M-1977-140 INSPECTION DATE 1/28/09 INSPECTOR'S INITIALS RCO OBSERVATIONS This inspection was performed by the Division as part of its monitoring of Construction Materials 112c permits. The operator was contacted about the scheduled inspection. The operator's representative named on page one was present during the inspection. The site was not active at the time of the inspection. The required permit ID sign and boundary markers were observed during the inspection. The future lake area that was approved under amendment AM-1 has not been affected by mining operations, but its boundary corners were marked. A new residence has been constructed close to the NW corner of the existing lake (on a subdivided lot zoned for such use). The lake was frozen, and the level was high enough that all portions of the floor were covered. The banks around the lake are gently sloped and mainly exhibit pitrun cobbles on the surface. The existing approved reclamation plan requires pond slopes that are 5:1, with topsoil to be replaced and seeding to occur. No topsoil stockpile was evident onsite, and the revegetation currently consists of willow thickets and cottonwood seedlings, all along the water line. There was very little grass on the banks. The operator stated that he is interested in finishing the reclamation for the lake and banks and getting that portion of the permit released. The operator should first review the approved reclamation plan to see what grading, topsoil replacement and seeding must be performed. If the areas to be considered for release do not meet the reclamation plan they should be further reclaimed. If those areas do not meet the approved reclamation plan but can be demonstrated to be stable with no further reclamation, the reclamation plan should be revised through a technical revision. The operator is not mining from this lake, but has been mining from the permitted pit immediately adjacent to this one (M-2000- 110) and processing the material in his own plant. There is a large stockpile of pitrun to be processed on this site, that was excavated from the neighboring pit prior to winter, and excavation has ceased. There is an elevated diesel tank on this site near the location where the adjoining pit is accessed. There is no impermeable secondary liner under it, which would normally be noted as a problem, but the operator stated that the tank was empty presently. Prior to start-up of operations this spring, the operator must ensure that this tank and all tanks, as well as all other fluid storage locations, are afforded impermeable secondary containment. The bond amount is currently $36,355. The last bond recalculation was on 12/5/05 and reflected that several concrete structures had been removed, though those cost savings were offset by increased unit costs, resulting in no net change. If the operator wishes to reduce the acreage or the bond for this permit, it should be confirmed that the approved reclamation plan has been followed and reported to this office. We will recalculate the bond, based on the reported and observed condition of the site and the existing reclamation plan. If the new figures indicate an increased bond, the operator must provide it within 60 days of notification. The site was orderly, with no noxious weeds or debris. There was some old equipment south of the plant, which may be counted in the bonded reclamation liability. No further items were observed during the inspection. Responses to this inspection report should be directed to this inspector at the Division of Reclamation, Mining and Safety, 691 County Road 233, Suite A-2, Durango, Colorado 81301. (Please note: As of 7/1/08 the Durango Field Office moved to the new address, shown above. Please revise your records as necessary.) I & E Contact Address NAME OPERATOR STREET CITY/STATE/ZIP Tom Mathias Mathias Concrete, Inc. PO Box 1500 Monte Vista, CO 81144 cc: Steve Shuey, DRMS ? CE ? BL ? FS ? HW ? HMWMD (CH) ? SE ? WQCD (CH) ? OTHER