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(Page 2) <br />MINE ID # OR PROSPECTING ID #: nn_te77_~5t <br />INSPECTION DATE: rlrtnhar 23 vpr17 INSPECTOR=S INITIALS: nay <br />OBSERVATIONS <br />This was a routine inspection conducted by David Bird of DRMS. Present during the inspection were Mr_ Gregory <br />Knell, Regulatory Manager, and Mr. Jason McGraw, Mine Supervisor. The site is located in Jefferson County, <br />approximately 5 miles south-southwest of the intersection of Highway C-470 and South Wadsworth Boulevard, <br />and within the boundaries of land owned by, and leased from, Lockheed Martin. <br />Material mined at this site consists of clay from the Benton Formation /Dakota Group, which is ultimately used <br />to produce bricks. The rock is generally poorly consolidated and easily stripped, but occasional blasting is <br />needed and is handled by an independent contractor. <br />The mine had recently completed a "campaign", a period of two to three months during which material is <br />stripped from the pit and stockpiled on site for later removal and transport to processing facilities for production <br />of bricks. Thus five new stockpiles of material, averaging approximately 400 ft long by 12-15 ft high and 100 ft <br />wide, have been placed about the site. Removal of stockpiled material can occur over several years. There <br />was no mining or movement of material ongoing at the time of inspection. <br />The site was in good condition. Signs and markers were adequate, and generally not needed since the mine is <br />surrounded on all sides by Lockheed Martin property, and the likelihood of public access is remote. Storm <br />water controls appear to be functioning properly, fhe hydrologic balance appears to be unimpacted, and no <br />erosional issues were evident. Noxious are nearly nonexistent; the surrounding area appears quite amenable to <br />healthy vegetative growth, and some previously disturbed ground is nearly indistinguishable from native ground <br />due towell-established grasses. <br />Because of the newly completed mining campaign and additional areas of disturbance at the site over those <br />documented during the last Division inspection in 2001, the existing financial warranty of $39,750 is found to be <br />inadequate. The Division's recalculation puts the new financial warranty at $72,739, an increase of $32,989. <br />This has been cited as a problem on page 3 of this inspection report. <br />I & E Contact Address <br />NAME: Greaorv Knell. Reaulatorv Manager <br />OPERATOR: Robinson Brick Company <br />STREET: 1R49 WPSt nnrtmouth Avanua <br />CITY/STATE/ZIP: nanva(. Cn RO1 lrt-1308 <br />cc: T CE <br />I' BL <br />T FS <br />I' H W <br />T HMWMD (CH) <br />T SE <br />t WQCD (CH) <br />T OTHER <br />