Laserfiche WebLink
The Division conducted a monitoring inspection of the site on June 14, 2012. Mr. Mark Vanoni (CC &V) was present <br />during the inspection. The primary focus of this inspection was to monitor solution levels. <br />Mr. Timm Comer (CC &V) provided updates on the status of the Phase V DCF failure inspected by the DRMS on April <br />17, 2012, and the process solution enhancement system (PSES): <br />DCF failure: TR expected to be submitted in the next week. <br />PSES: Process is being finalized. The system is designed to remove solids such as manganese <br />precipitates from the gold recovery circuit. <br />Inspection: <br />Mr. Vanoni provided an in the - field overview of the proposed liner extension in the assay lab area. <br />Construction is continuing on the PSES pad (see Photo 1) and the proposed new mill platform (see Photo 2). <br />Mr. Vanoni provided an update on the DCF failure investigation efforts and Phase V spill area remediation. <br />Photo 3 shows the Phase V spill area prepped for placing the extended liner. Photo 4 shows additional area <br />staked for additional subgrade prep for the extended liner. Photo 5 shows the Phase V DCF slope failure. <br />The inspection continued as the Division visited each of the high and low solution collection system transducers <br />and recorded water level values. The recording sheet is included as Attachment A, and the values are <br />summarized below in the Transducer Readings. <br />The Arequa Gulch underdrains were inspected. The South Underdrain discharge was measured to be 2.0 gpm. <br />Both the North Underdrain and the AG /Spring were dry. The flowmeter installed for the B63 pumpback line <br />indicated a flow rate of 0.5 gpm. The A35 pumpback line was dry. No flow was observed in the Arequa Gulch <br />flume (AG 1.5- 001A). <br />Transducer Readings: <br />Phase 1 High Volume Solution Collection (readings in ft) <br />Pump #299 / XDCR #xx Pump #300 / XDCR #00 <br />47.8 45.7 <br />Pump #301 / XDCR #01 Pump #302 / XDCR #02 Pump #303 / XDCR #03 <br />Phase 1 Low Volume Solution Collection (readings in ft) <br />Pond Lvl / XDCR #1 System Press / XDCR #2 <br />46.10 41.20 <br />Phase 1 Pond Piezometers (readings in ft) <br />Piezo #1 (HAND) <br />1.31 <br />Pump / XDCR #4 <br />19.2 <br />Piezo #2 (AUTO) <br />0.41 <br />Pump / XDCR #5 <br />20.3 <br />OBSERVATIONS <br />23.1 33.1 34.4 <br />Phase 11 & 111 High Volume Solution Collection (readings in ft) <br />Pump / XDCR #6 <br />21.9 <br />PERMIT #: M - 1980 - 244 <br />INSPECTOR'S INITIALS: TC1 <br />INSPECTION DATE: June 14, 2012 <br />Page 2 of 6 <br />