Laserfiche WebLink
Due to the nature of the slurry material, immediate response, small amount of material, <br /> and excavation, no known impacts to human health or the environment have been <br /> observed or are expected to occur. <br /> As outlined above and within section d below, sampling has been undertaken to validate <br /> the success of material recovery. <br /> c. CC&V Contact <br /> For any further information regarding this event please contact; <br /> Meg Burt <br /> Senior Environmental Manager <br /> PO Box 191, <br /> 100 N 3rs St, <br /> Victor, Colorado, 80860 <br /> Work: 719-689-4055 <br /> Cell: 775-397-3571 <br /> Fax: 719-689-3254 <br /> d. Monitoring and analyses that are necessary to evaluate the situation and <br /> corrective actions <br /> Soil samples have been taken for the analysis of total, free, and WAD CN at the release <br /> location and the area immediately adjacent to the affected soil. <br /> All samples have been sent to an independent external laboratory for analysis and <br /> reporting. <br /> e. Results of the Operator's investigation <br /> The sump pump that sends any overflow from the thickener itself back to the plant <br /> tripped out. The Mill Control Room did not register an alarm. Additionally, the syphon <br /> break, designed to prevent siphoning of the tank was found to be stuck in the open <br /> position causing solution to back feed into the sump line and into the concrete secondary <br /> containment. With the sump pump off thickener slurry started to fill the containment area <br /> and the slurry began splashing on to the ground adjacent to the concrete berm. <br /> Contamination of the ground was from the splashing of the slurry and not breaching the <br /> concrete containment. Root cause was found to be the failure of the alarm system, <br /> inoperable siphon break, and infrequent area inspections. <br /> To prevent further occurrences of this type, a work order was placed with Mill <br /> Maintenance and E&I to address the failing alarm system and the syphon break issue. <br /> Additionally, inspection procedures were communicated with the crew on shift when it <br /> happened and communicated with other crews. <br /> Should you require further information please do not hesitate to contact me at 719.689.4055 or <br /> Meg.Burt(a)newmont.com. <br />