DRC-2021-006762 - 0901a06880e8cafe

Energy Fuels Resources (USA) Inc.
225 Union Blvd. Suite 600
Lakewood, CO, US, 80228
303 974 2140
www.energyfuels.com
blv of Waste Managarnent DRC,- 2424- 000 &2...
May 10, 2021
VIA PDF AND OVERNIGHT DELIVERY
Jalynn Knudsen,
Interim Director of Waste Management and Radiation Control
State of Utah Department of Environmental Quality
195 North 1950 West
Salt Lake City, UT 84116
and Radiation Control
MAY 1 2 2021
Re: State of Utah Stipulation and Consent Order ("SCO") Docket Number UGW-20-01
White Mesa Uranium Mill — Energy Fuels Resources (USA) Inc. ("EFRI") Notice Pursuant
to Part II.H.1 of the Groundwater Corrective Action Plan ("GCAP") included as
Attachment 1 to the SCO
Dear Ms. Knudsen:
EFRI performed first quarter 2021 chloroform monitoring during the period from January 1, to March 31,
2021 under the September 14, 2015 GCAP, included as Attachment 1 to the duly executed SCO.
Part II.G of the GCAP states that "An exceedance shall be defined as the presence of chloroform in any
Compliance Monitoring Well in excess of the Table 2 Groundwater Corrective Action Limit ("GCAL")
(70 ug/1) for two or more consecutive quarters." Further, Part II.H.1) states that "At any time EFR[I]
submits a quarterly report that demonstrates an exceedance (second quarter of chloroform exceedance),
EFR[I] will provide a written exceedance notice to the Director ("Exceedance Notice") for all wells that
have demonstrated such an exceedance." Pursuant to Part II.H.1 of the GCAP, please note that the
concentrations of chloroform in TW4-30 exceeded the respective GCAL of 70 ug/L for two or more
consecutive quarters as noted on Table 1 attached.
This letter serves as the Exceedance Notice required pursuant to Part II.H.1) of the GCAP.
Part II.H.2) of the GCAP requires that within 60 days after the time of submittal of a quarterly report that
demonstrates an exceedance, EFRI will provide a plan and schedule for remedial actions to address
excursion for Director approval. A Plan and Time Schedule as required by II.H.2) will be submitted
under separate cover within the timeframe specified.
If you should have any questions regarding this submittal, please contact me at [phone].
Yours tru
ENE GY FUELS RESOURCES (USA) INC.
Kathy Weinel
Quality Assurance Manager
cc: David Frydenlund, Terry Slade, Logan Shumway, Scott Bakken
Table 1
TW4-30 Data
TW4-30 Chloroform
( ugio
Carbon „..-, _. .. .. . ... 'LE ii ac hionde
ltigil)
Chforomethane
ugio :
MI Ik 1 eilp, lune ' ' ., . . Chloride
(ug/1)
N it rate
( m u/l) '
Chloride
(mg/l )
11/11/2020 82.8 ND ND ND 3.64 37.1
3/18/2021 74.8 ND ND ND 3.54 37.6