2015-01-23_INSPECTION - M1980244 ‎(2)‎

• Permit No: M1980244
• IBM Index Class Name: INSPECTION
• Doc Date: 1/23/2015
• Doc Name: Inspection Report
• From: DRMS
• To: Cresson Project
• Inspection Date: 11/5/2014
• Email Name: TC1
• Media Type: D
• Archive: No

PERMIT #: M- 1980 -244
INSPECTOR'S INITIALS: TC1
INSPECTION DATE: November 5, 2014
OBSERVATIONS
The Division conducted a monitoring inspection of the site on November 5, 2014. Chris Hanks, Marc Tidquist,
Ron DiDonato and Scott Redabaugh represented the Operator during various parts of the inspection. Tim
Cazier and Amy Eschberger represented the Division. The focus of this inspection was to observe water
levels, and ongoing construction for the Squaw Gulch VLF.
Meeting:
The Division attended a meeting with representatives from CC &V, Ames Construction and Amec to discuss the
pending certification report for the completed Squaw Gulch VLF Pregnant Solution Storage Area (PSSA)
construction.
Inspection:
Construction: In the Squaw Gulch VLF, the Division observed:
• Placement of the third 28 -inch diameter, perforated, primary high volume solution collection system
HDPE pipe (see Photos 1 and 2), and butt fusion pipe welder (see Photo 3);
• Top of primary geomembrane liner on the floor of the PSSA (see Photo 4);
• Tie -in of the secondary 24 -inch diameter, perforated, primary high volume solution collection system
PCPE pipe (see Photo 5)
• Placement of the 4 -inch diameter, perforated, tertiary high volume solution collection system PCPE
pipe (see Photo 5); and
• Installed PSSA louvered riser pipes (see Photos 6A and 6B);
Reclamation plan: Mr. Hanks pointed out the erosion gullies on the Hwy 67 /SGVLF toe berm and explained
the mines intent to riprap the downchutes from the CDOT drainage pipes under Hwy 67. He indicated where
the diversion channels were being constructed around the underdrain ponds (see Photo 7).
Water levels: The inspection continued as the Division visited each of the high and low solution collection
system transducers and recorded water level values. The recording sheet is included as Attachment A, and
the values are summarized below in the Transducer Readings.
The North and South Arequa Gulch underdrains were not inspected.
Transducer Readings:
Phase I High Volume Solution Collection (readings in ft)
Pump #299 / XDCR #xx Pump #300 / XDCR #00
37.9 40.3
Pump #301 / XDCR #01 Pump #302 / XDCR #02
29.4 39.0
Phase I Low Volume Solution Collection (readings in ft)
Pond Lvl / XDCR #1 System Press / XDCR #2
57.50 48.30
Pump #303 / XDCR
#03
42.6
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