2008-09-04_HYDROLOGY - M2007044

• Permit No: M2007044
• IBM Index Class Name: HYDROLOGY
• Doc Date: 9/4/2008
• Doc Name: June 2008 discharge monitoring report
• From: Energy Fuels Resources Corp
• To: DRMS
• Email Name: GRM
• Media Type: D
• Archive: No

to 4 days each month due to low mine water inflow. Because of this discharge schedule, it is
not possible to pursue the accelerated WET testing option. Bench chemistry noted in the
WET Test report indicate that dissolved oxygen (DO) levels were very low in the first
composite sample collected on June 24 and remained somewhat low on the June 25 and 26
samples. The DO levels were recorded at levels low enough that failure or poor performance
of the WET test would be expected. Analytical results from Energy Laboratories, indicate
that the chemical oxygen demand (COD) in the treated water was higher than the untreated
mine water.
Energy Fuels plans to conduct the PTI in a four step process as follows:
1) Determine cause of low DO and high COD levels by bench scale and chemical testing
2) Make necessary adjustments to treatment process
3) Determine effectiveness of adjustments with chemical testing
4) Confirm resolution of cause with WET test
Energy Fuels is currently isolating and testing the affects of the individual treatment
chemicals with bench scale tests while using DO levels as an indicator. Adjustments to the
treatment process will be made prior to the next water discharge, currently scheduled for late
July. The effectiveness of the treatment system adjustments in July will be determined by
chemical analysis results (i.e., dissolved oxygen levels and COD). Energy Fuels anticipates
that the confirmation WET test will be conducted in August or September 2008.
Energy Fuels will provide the WQCD with status reports due on the following schedule:
30-day status report August 7, 2008
60-day status report September 6, 2008
90-day status report October 6, 2008
120-day final report November 5, 2008
The above schedule is dictated by the water discharge permit. At this point in time, Energy
Fuels believes that it will be possible to accommodate this schedule. However, due to the
low frequency of discharge from the treatment plant, opportunities to make adjustments to
the treatment system are typically limited to once per month. As a result, the resolution of
the PTI may run past the above schedule. If this were to occur, Energy Fuels would request
an extension from WQCD.
Please feel free to contact me at [phone] if you need any additional information.
Sincerely,

Zach Rogers, EIT
Environmental Engineer.
Cc: Jeff Osborn, Frank Filas, Marty Olson, (Energy Fuels)
Mr. Andrew Neuhart (WQCD)
Friergy Fuck, Inc. 44 Union Blvd, `quite 600
wNvw encrgyFuels.ccom La, °:vvood, Colorado 80228
Phone: [phone]
Fav 303-9:4-2141