Laserfiche WebLink
MINE ID # OR PROSPECTING ID #: nn-tale-nAx <br />INSPECTION DATE: $2{1tPmhar ~ e 9nn7 INSPECTORS INITIALS: -DB2_ <br />OBSERVATIONS <br />This was a routine inspection conducted by David Bird of DRMS. Greg Gerganoff, Safety & Environmental <br />Coordinator, was present during the inspection. The site is located in Jefferson County, about 5 miles north of <br />Golden. <br />The material mined at the quarry consists of an igneous intrusive rock that is used as road paving product. <br />Mining method includes drilling and blasting, followed by excavation by loader and transport by haul truck to <br />crushing and screening facilities for later transport off site by semi-trailer. <br />No issues were observed that require immediate attention. Water usage for dust control and other operations <br />allows net water consumption and no discharge water leaves fhe site. Multiple staged storm water control <br />ponds see rare use beyond the first, uppermost pond. No erosional issues were seen. Interim reclamation <br />performed in the past appears stable with healthy vegetation and minimpt erosion, <br />Water was observed in the bottom of the pit, but Operator indicated that the water was not ground water and <br />was a result of runoff from recent precipitation. No ground water seepoge was observed discharging from pit <br />walls. <br />The mine is currently excavating above the water table, so impacts to the ground water hydrologic balance <br />are not an issue as yet. However, future expansion of the pit, which has an estimated 20 years of remaining <br />reserves, will consist of deepening of the pit with no lateral expansion. Thus, the pit may eventually intercept <br />ground water, and at that time, ground water protection measures will need to be addressed. <br />The last inspection conducted by the Division at this site occurred in 1998. In the ensuing nine years, additional <br />site disturbance together with inflation have resulted in an increase in the required Financial Warranty. The new <br />Financial Warranty was calculated to be $509,387, an increase of $274,250 over the existing Financial Warranty <br />of $235,137. This has been cited as a problem on page 3. <br />I & E Contact Address <br />NAME: Stan Oooerman. V.P. of Operations <br />OPERATOR: Asphalt Paving~ompany <br />STREET: 1 aam w aa~h AvP <br />CITY/STATE/ZIP: Gnlrlan r'n And0.4 <br />cc: [' CE <br />t BL <br />C FS <br />T HW <br />I HMWMD (CH) <br />[ SE <br />r wQCD (CH) <br />I' OTHER <br />