DRC-2016-011443 - 0901a06880685daf

ENERGYFUELS
Div pf W^ste Mansgem^Rt
end Radiation Oontroi
MOV \ S 20®Energy Fuels Resources (USA) Inc.
225 Union Blvd. Suite 600
Lakewood, CO, US, 80228
303 974 2140
www.energvfuels.coin
November 11, 2016
VIA PDF AND OVERNIGHT DELIVERY
DRC.-221&-0 H443
Scott Anderson,
Director of Waste Management and Radiation Control
State of Utah Department of Environmental Quality
195 North 1950 West
P.O. Box 144880
Salt Lake City, UT 84114-4880
Re: State of Utah Ground Water Discharge Permit No. UGW370004
White Mesa Uranium Mill - Notice Pursuant to Part I.G.l (a)
Dear Mr. Anderson:
The White Mesa Mill (the “Mill”) performed third quarter (“Q3”) groundwater monitoring during the
period from July 1, to September 30, 2016 under the August 24, 2012 version of the Mill’s Groundwater
Discharge Permit (the “GWDP”). All analytical data needed for comparison to the GWCLs were
received during the period ending October 20, 2016.
Pursuant to Part I.G.l.a) of the GWDP, (August 24, 2012) please take notice that the concentrations of
specific constituents in the monitoring wells highlighted in yellow and bold italics in the columns for this
quarter in the attached Table 1 exceeded their respective GWCLs. For ease of review, Table 1 has been
formatted to simplify the tracking of any continued exceedances from one monitoring period to the next
by charting ongoing monitoring of the same well in the same row, and by highlighting exceedances (in
color and bold italics).
Part I.G. 1 c) of the GWDP states “that the Permittee shall prepare and submit within 30 calendar days to
the Executive Secretary a plan and a time schedule for assessment of the sources, extent and potential
dispersion of the contamination, and an evaluation of potential remedial action to restore and maintain
groundwater quality to ensure that Permit limits will not be exceeded at the compliance monitoring point
and that DMT or BAT will be reestablished.” The summary below relating to Q3 2016 exceedances
includes, for each exceedance, a brief discussion of whether such a plan and schedule is or is not required
or appropriate at this time in light of other actions currently being undertaken by Energy Fuels Resources
(USA) Inc. (“EFRI”) or in light of other reports submitted by EFRI, and as determined by Division of
Waste Management and Radiation Control (“DWMRC”) Staff. A description of the other actions and
reports which have affected the requirement to submit a plan and time schedule are as follows:
1. Nitrate + nitrite and chloride in monitoring wells at the site have been the subject of ongoing
investigations at the Mill. Based on the results of the previous investigations, EFRI and the
Director acknowledged that it has not been possible to date to determine the source(s), cause(s),
attribution, magnitudes of contribution, and proportion(s) of the local nitrate + nitrite and chloride
in groundwater. EFRI submitted a Corrective Action Plan (“CAP”) in February 2012 for nitrate
+ nitrite and chloride in groundwater. The CAP was approved on December 12, 2012 and the
activities associated with the CAP are on-going. Based on information provided by DWMRC in
teleconferences on April 27, and May 2, 2011, due to the ongoing activities and actions, the 30-
day plan and schedule for assessment is not required for nitrate + nitrite and chloride exceedances
at this time.
2. As discussed in previous quarterly groundwater sampling reports, the background levels and
GWCLs for pH were established based on eight or more quarters of laboratory data, which are
historically higher than field data. EFRI’s letter to the Director dated January 31, 2011 proposed
the recalculation of the GWCLs for field pH. Following the statistical evaluation of pH data by
EFRI’s geochemical consultant, INTERA, Inc., EFRI compared the Mill’s groundwater pH data
from Q2 2011 and noted that all of the June 2011 groundwater results, and many of the other
results from Q2 2011, were already outside the revised GWCLs that were to be proposed in the
June 30, 2011 letter. Pursuant to teleconferences with DWMRC on December 5, and December
19, 2011, EFRI submitted a Work Plan and Schedule on January 20, 2012 and a revised plan
based on DWMRC comments on April 13, 2012. Based on the approved Work Plan and Time
Schedule, EFRI and DWMRC entered into a Stipulated Consent Agreement (“SCA”) dated July
12, 2012. The SCA required the completion of the pH Report and the Pyrite Investigation and
associated report. The pH Report and Pyrite Investigation Report were submitted November 9,
2012 and December 7, 2012 respectively. By letter dated April 25, 2013, DWMRC accepted the
conclusions that the out-of-compliance results for pH are due to background effects within the
aquifer matrix and are not caused by Mill activities. DWMRC also approved the recalculation of
the GWCLs. As a result, the 30-day plan and schedule for assessment is not required for field pH
exceedances.
3. A Plan and Time Schedule will not be prepared for monitoring wells with two successive
exceedances if successive exceedances were reported in a previous quarter and were included in
the Source Assessment Reports (“SARs”), submitted October 10, 2012, May 8, 2013, August 30,
2013, December 17, 2013, January 13, 2014, March 19, 2014, December 9, 2015, and June 24,
2016 and the Plan and Time Schedules submitted December 4, 2014, September 10, 2015, and
December 3, 2015. A Plan and Time Schedule will not be submitted for those constituents
covered by the previously mentioned SARs, because the conclusions and actions delineated in
those reports were either accepted by DWMRC as documented in DWMRC correspondence
dated April 25, 2013, July 23, 2013, September 17, 2013 January 7, 2014, March 10, 2014, June
5, 2014, and February 19, 2016 respectively.
4. Chloroform and methylene chloride are the subject of the ongoing chloroform pumping program
and are covered by State of Utah Notice of Violation (“NOV”) and Groundwater Corrective
Action Order (“CAO”) State of Utah Department of Environmental Quality (“UDEQ”) Docket
No. UGW-20-01. As a result, the 30-day plan and schedule for assessment of chloroform and
methylene chloride exceedances is not required.
It is important to note that under the GWDP, GWCLs have been determined on a well-by-well basis to
reflect background groundwater quality, as defined by the mean plus second standard deviation
concentration, or the equivalent. Accordingly, the GWDP requires that constituent concentrations in each
monitoring well shall not exceed the GWCLs set out in Table 2 of the GWDP. It should be noted that,
because the GWCLs have been set at the mean plus second standard deviation, or the equivalent, un­
impacted groundwater would normally be expected to exceed the GWCLs approximately 2.5% of the
time. Therefore, exceedances are expected in approximately 2.5% of all sample results, and do not
necessarily represent impacts to groundwater from Mill operations. In fact, more frequent sampling of a
Letter to Mr. Scott Anderson
November 11, 2016
Page 2
given analyte will increase the number of exceedances due to statistical variation and not due to Mill
activity. Additionally, given the slow velocity of groundwater movement, accelerated sampling at a
monthly frequency can result in resampling of essentially the same water and can lead to repeat
exceedances for accelerated constituents not due to Mill activities, but due to repeat sampling of the same
water.
1.0 Exceedances in Required Quarterly Sampling Wells
1.1 Quarterly Wells with Two Successive Exceedances
As indicated in the attached Table 1, the analytes discussed below exceeded their respective GWCLs for
two successive sampling periods in Q3 2016. A 30-day plan and schedule contemplated in Part I.G.l c)
of the GWDP will not be required for the consecutive exceedances below for the reasons stated below.
One-time exceedances and non-successive exceedances are noted on Table 1, but not listed below.
Consecutive exceedances which occurred in previous reporting periods are discussed in the SARs
submitted October 10, 2012, May 8, 2013, August 30, 2013, December 17, 2013, January 13, 2014,
March 19, 2014, December 9, 2015, and June 24, 2016 and the Plan and Time Schedules submitted
December 4, 2014, September 10, 2015, and December 3, 2015.
MW-11
Letter to Mr. Scott Anderson
November 11, 2016
Page 3
• Manganese concentrations exceeded the GWCL in MW-11 in all of the Q3 2016 sampling events.
This consecutive exceedance is addressed in the SAR, dated October 10, 2012. As a result of the
SAR, the GWCLs have been recalculated and accepted by DWMRC. The recalculated GWCLs
will become effective upon their publication in the next revision of the GWDP. As a result of
DWMRC’s acceptance of the recalculated GWCLs, a plan and schedule to address this
consecutive exceedance is not necessary and will not be submitted. Until such time as the new
GWCLs become effective, the exceedances will continue to be noted and reported.
MW-14
• Field pH has been slightly outside (slightly lower than) the GWCL in the June and July monthly
sampling events. As mentioned above, site-wide pH issues and trends are addressed in reports
submitted on November 9, 2012 and December 7, 2012. As a result of the November 7, 2012
report, the GWCLs have been recalculated and accepted by DWMRC. The recalculated GWCLs
will become effective upon their publication in the next revision of the GWDP. As a result of
DWMRC’s acceptance of the recalculated GWCLs, a plan and schedule to address this
consecutive exceedance is not necessary and will not be submitted. Until such time as the new
GWCLs become effective, the exceedances will continue to be noted and reported.
MW-25
• Field pH has been slightly outside (slightly lower than) the GWCL in the June and July monthly
sampling events. As mentioned above, site-wide pH issues and trends are addressed in reports
submitted on November 9, 2012 and December 7, 2012. As a result of the November 7, 2012
report, the GWCLs have been recalculated and accepted by DWMRC. The recalculated GWCLs
will become effective upon their publication in the next revision of the GWDP. As a result of
DWMRC’s acceptance of the recalculated GWCLs, a plan and schedule to address this
consecutive exceedance is not necessary and will not be submitted. Until such time as the new
GWCLs become effective, the exceedances will continue to be noted and reported.
MW-26
Letter to Mr. Scott Anderson
November 11, 2016
Page 4
• Nitrate + nitrite has exceeded its GWCL in all of the Q3 2016 sampling events. As mentioned
above, a CAP has been submitted and approved and the specified actions are currently being
implemented; therefore a plan to address this consecutive exceedance is not necessary and is not
being submitted.
• The uranium concentration exceeded its GWCL in the June and July monthly sampling events.
This consecutive exceedance is addressed in the SAR, dated October 10, 2012. As a result of the
SAR, the GWCLs have been recalculated and accepted by DWMRC. The recalculated GWCLs
will become effective upon their publication in the next revision of the GWDP. As a result of
DWMRC’s acceptance of the recalculated GWCLs, a plan and schedule to address this
consecutive exceedance is not necessary and will not be submitted. Until such time as the new
GWCLs become effective, the exceedances will continue to be noted and reported.
• Chloroform has exceeded its GWCL for all of the Q3 2016 sampling events. MW-26 is used as a
pumping well for the ongoing chloroform capture program and is expected to yield increased
concentrations of chloroform. Because this well is used in the chloroform capture program
which is the subject of separate investigations and actions, a plan and time schedule to address the
consecutive exceedances is not necessary and is not being submitted.
MW-26 Note: As stated in the September 2009 Statement of Basis (page 23) in support of the January
20, 2010 revisions to the GWDP, “[i]t should be noted that, because MW-26 is a pumping well for
chloroform removal, concentrations of all constituents in that well are subject to potential variation over
time as a result of the pumping activity. This will be taken into account by the Executive Secretary in
determining compliance for this well.” Based on information provided by DWMRC in teleconferences
on April 27, and May 2, 2011, due to the current pumping status as part of the chloroform investigation
program, the 30-day plan and schedule for assessment is not required at this time for exceedances of
chloroform and methylene chloride in MW-26.
• Field pH has been slightly outside (slightly lower than) the GWCL in all of the Q3 2016 sampling
events. As mentioned above, site-wide pH issues and trends are addressed in reports submitted
on November 9, 2012 and December 7, 2012. As a result of the November 7, 2012 report, the
GWCLs have been recalculated and accepted by DWMRC. The recalculated GWCLs will
become effective upon their publication in the next revision of the GWDP. As a result of
DWMRC’s acceptance of the recalculated GWCLs, a plan and schedule to address this
consecutive exceedance is not necessary and will not be submitted. Until such time as the new
GWCLs become effective, the exceedances will continue to be noted and reported.
• The chloride concentration exceeded its GWCL in all of the Q3 2016 sampling events. As
mentioned above, a CAP has been submitted and approved to address nitrate+nitrite
contamination which is expected to address chloride in groundwater. The actions specified in the
CAP are currently being implemented; therefore a plan to address this consecutive exceedance is
not necessary and is not being submitted.
• Methylene chloride has exceeded its GWCL in all of the Q3 2016 sampling events. MW-26 is
used as a pumping well for the ongoing chloroform capture program and is expected to yield
increased concentrations of methylene chloride. Because this well is used in the chloroform
Letter to Mr. Scott Anderson
November 11, 2016
Page 5
capture program which is the subject of separate investigations and actions, a plan and time
schedule to address the consecutive exceedances is not necessary and is not being submitted.
MW-30
• Nitrate + nitrite has exceeded its GWCL in all of the Q3 2016 sampling events. As mentioned
above, a CAP has been submitted and approved and the specified actions are currently being
implemented; therefore a plan to address this consecutive exceedance is not necessary and is not
being submitted.
• The chloride concentration exceeded its GWCL all of the Q3 2016 sampling events. As
mentioned above, a CAP has been submitted and approved to address nitrate+nitrite
contamination which is expected to address chloride in groundwater. The actions specified in the
CAP are currently being implemented; therefore a plan to address this consecutive exceedance is
not necessary and is not being submitted.
• Field pH has been slightly outside (slightly lower than) the GWCL in the June and July monthly
sampling events. As mentioned above, site-wide pH issues and trends are addressed in reports
submitted on November 9, 2012 and December 7, 2012. As a result of the November 7, 2012
report, the GWCLs have been recalculated and accepted by DWMRC. The recalculated GWCLs
will become effective upon their publication in the next revision of the GWDP. As a result of
DWMRC’s acceptance of the recalculated GWCLs, a plan and schedule to address this
consecutive exceedance is not necessary and will not be submitted. Until such time as the new
GWCLs become effective, the exceedances will continue to be noted and reported.
• The selenium concentration exceeded its GWCL in all of the Q3 2016 sampling events. This
consecutive exceedance is addressed in the SAR, dated October 10, 2012. As a result of the SAR,
the GWCLs have been recalculated and accepted by DWMRC. The recalculated GWCLs will
become effective upon their publication in the next revision of the GWDP. As a result of
DWMRC’s acceptance of the recalculated GWCLs, a plan and schedule to address this
consecutive exceedance is not necessary and will not be submitted. Until such time as the new
GWCLs become effective, the exceedances will continue to be noted and reported.
MW-31
• Nitrate + nitrite has exceeded its GWCL in all of the Q3 2016 sampling events. As mentioned
above, a CAP has been submitted and approved and the specified actions are currently being
implemented; therefore a plan to address this consecutive exceedance is not necessary and is not
being submitted.
• The chloride concentration exceeded its GWCL in all of the monitoring periods for Q3 2016. As
mentioned above, a CAP has been submitted and approved to address nitrate+nitrite
contamination which is expected to address chloride in groundwater. The actions specified in the
CAP are currently being implemented; therefore a plan to address this consecutive exceedance is
not necessary and is not being submitted.
• The sulfate concentration exceeded its GWCL in all of the Q3 2016 sampling events. This
consecutive exceedance is addressed in the revised SAR, dated December 9, 2015 and approved
by DWMRC on February 9, 2016. As a result of the SAR, the GWCLs have been recalculated
and accepted by DWMRC. The recalculated GWCLs will become effective upon their
Letter to Mr. Scott Anderson
November 11, 2016
Page 6
publication in the next revision of the GWDP. As a result of DWMRC’s acceptance of the
recalculated GWCLs, a plan and schedule to address this consecutive exceedance is not necessary
and will not be submitted. Until such time as the new GWCLs become effective, the exceedances
will continue to be noted and reported.
• The selenium concentration exceeded its GWCL in all of the Q3 2016 sampling events. This
consecutive exceedance is addressed in the revised SAR, dated December 9, 2015 and approved
by DWMRC on February 9, 2016. As a result of the SAR, the GWCLs have been recalculated
and accepted by DWMRC. The recalculated GWCLs will become effective upon their
publication in the next revision of the GWDP. As a result of DWMRC’s acceptance of the
recalculated GWCLs, a plan and schedule to address this consecutive exceedance is not necessary
and will not be submitted. Until such time as the new GWCLs become effective, the exceedances
will continue to be noted and reported.
• The Total Dissolved Solids (“TDS”) exceeded its GWCL in all of the Q3 2016 sampling events.
This consecutive exceedance is addressed in the revised SAR, dated December 9, 2015 and
approved by DWMRC on February 9, 2016. As a result of the SAR, the GWCLs have been
recalculated and accepted by DWMRC. The recalculated GWCLs will become effective upon
their publication in the next revision of the GWDP. As a result of DWMRC’s acceptance of the
recalculated GWCLs, a plan and schedule to address this consecutive exceedance is not necessary
and will not be submitted. Until such time as the new GWCLs become effective, the exceedances
will continue to be noted and reported.
MW-35
• The uranium concentration exceeded the GWCL in MW-35 in all of the Q3 sampling events. A
plan and schedule to address this exceedance is not necessary and is not being submitted because
the exceedances are based on the interim GWCLs for MW-35, which have been set at a fraction
of the Groundwater Quality Standards. Background has been established for MW-35 in the
Background Report submitted to DWMRC on May 1, 2014. As a result of the Background
Report, the GWCLs have been calculated and accepted by DWMRC in a letter dated July 15,
2014. The calculated GWCLs will become effective upon their publication in the next revision of
the GWDP. As a result of DWMRC’s acceptance of the calculated GWCLs, a plan and schedule
to address this consecutive exceedance is not necessary and will not be submitted. Until such time
as the new GWCLs become effective, the exceedances will continue to be noted and reported. It
should be noted that the exceedances of the interim GWCLs noted herein, do not necessarily
represent impacts to groundwater from Mill activities.
• Field pH has been slightly outside (slightly lower than) the GWCL in the June and July monthly
sampling events. A plan and schedule to address this exceedance is not necessary and is not
being submitted because the exceedances are based on the interim GWCLs for MW-35, which
have been set at a fraction of the Groundwater Quality Standards. Background has been
established for MW-35 in the Background Report submitted to DWMRC on May 1, 2014. As a
result of the Background Report, the GWCLs have been calculated and accepted by DWMRC in
a letter dated July 15, 2014. The calculated GWCLs will become effective upon their publication
in the next revision of the GWDP. As a result of DWMRC’s acceptance of the calculated
GWCLs, a plan and schedule to address this consecutive exceedance is not necessary and will not
be submitted. Until such time as the new GWCLs become effective, the exceedances will
continue to be noted and reported. It should be noted that the exceedances of the interim GWCLs
noted herein, do not necessarily represent impacts to groundwater from Mill activities.
Letter to Mr. Scott Anderson
November 11, 2016
Page?
• The manganese concentration exceeded the GWCL in MW-35 in the July and Q3 (August)
sampling events. A plan and schedule to address this exceedance is not necessary and is not being
submitted because the exceedances are based on the interim GWCLs for MW-35, which have
been set at a fraction of the Groundwater Quality Standards. Background has been established
for MW-35 in the Background Report submitted to DWMRC on May 1, 2014. As a result of the
Background Report, the GWCLs have been calculated and accepted by DWMRC in a letter dated
July 15, 2014. The calculated GWCLs will become effective upon their publication in the next
revision of the GWDP. As a result of DWMRC’s acceptance of the calculated GWCLs, a plan
and schedule to address this consecutive exceedance is not necessary and will not be submitted.
Until such time as the new GWCLs become effective, the exceedances will continue to be noted
and reported. It should be noted that the exceedances of the interim GWCLs noted herein, do not
necessarily represent impacts to groundwater from Mill activities.
• The selenium concentration exceeded the GWCL in MW-35 in the Q3 (August) and September
sampling events. A plan and schedule to address this exceedance is not necessary and is not being
submitted because the exceedances are based on the interim GWCLs for MW-35, which have
been set at a fraction of the Groundwater Quality Standards. Background has been established
for MW-35 in the Background Report submitted to DWMRC on May 1, 2014. As a result of the
Background Report, the GWCLs have been calculated and accepted by DWMRC in a letter dated
July 15, 2014. The calculated GWCLs will become effective upon their publication in the next
revision of the GWDP. As a result of DWMRC’s acceptance of the calculated GWCLs, a plan
and schedule to address this consecutive exceedance is not necessary and will not be submitted.
Until such time as the new GWCLs become effective, the exceedances will continue to be noted
and reported. It should be noted that the exceedances of the interim GWCLs noted herein, do not
necessarily represent impacts to groundwater from Mill activities.
1.2 Quarterly Wells with New Exceedances Reported in Q3
One new exceedance for the Q3 2016 quarterly well sampling program is listed below. This exceedance
will result in an accelerated sampling frequency from quarterly to monthly. The well listed below will
only be sampled during the monthly events for those constituents that exceeded the GWCLs. The well
listed below will be sampled for all constituents listed in the GWDP during the quarterly events as that is
the regularly scheduled sampling for the quarterly wells. Accelerated monthly monitoring will continue
pursuant to the requirements described below.
• Uranium in MW-31 was slightly above the GWCL in the Q3 (August) sampling event.
Relative to accelerated reporting requirements, based on phone conversations with DWMRC on April 5,
2010, reporting of exceedances is required to be completed within 30 days of receipt of the last data
package for a quarterly monitoring event. Similarly, accelerated monitoring is required to commence the
month following the submission of the Exceedance Notice for a specified quarter for wells that are being
accelerated from quarterly to monthly and the quarter following the submission of the Exceedance Notice
for wells that are being accelerated from semiannually to quarterly. Per teleconferences with DWMRC,
EFRI proposed modified language for the GWDP, Part l.G.l on May 25, 2012, to document DWMRC
concurrence with the accelerated reporting and monitoring agreements resulting from the April 5, 2012
teleconference.
Letter to Mr. Scott Anderson
November 11, 2016
Page 8
2.0 Exceedances in Semiannual Sampling Wells Accelerated to Quarterly
2.1 Semi-annual Wells with Two Successive Exceedances
As indicated in the attached Table 1, the analytes discussed below exceeded their respective GWCLs for
two successive sampling periods (Q2 2016 and Q3 2016).
MW-3
Fluoride, selenium, field pH, beryllium, cadmium, zinc, thallium, sulfate, nitrate, tetrahydrofuran
(“THF”), nickel, and manganese have exceeded their GWCLs intermittently, up to and including Q3
2016. A SAR was submitted on October 10, 2012 which addressed fluoride and selenium. The field pH
was addressed in reports submitted on November 9, 2012 and December 7, 2012. Cadmium, zinc,
beryllium, nickel and sulfate were addressed in two Plans and Time Schedules dated September 10, 2015
and December 3, 2015. Exceedances of thallium and nitrate did not require the submission of a Plan and
Time Schedule or SAR. Manganese and THF exceeded their respective GWCLs for two successive
sampling periods ending in Q3 2016. Pursuant to the GWDP, a Plan and Time Schedule for manganese
and THF should be submitted as a result of the Q3 exceedances. However, a Plan and Time Schedule is
unwarranted in light of other actions currently being undertaken by EFRI pursuant to discussions with
DWMRC regarding the construction issues in MW-3. The above noted constituent concentrations have
been noted to be highly variable and unpredictable during recent monitoring events in monitoring
well MW-3, including the most recent 3rd Quarter 2016 results.
These concentration fluctuations are likely due to efforts to isolate a section of blank casing below
the monitoring well screened interval using a well packer at the bottom of the screened interval as
approved in the Plans and Time Schedules dated September 10, 2015 and December 3, 2015. It is likely
that the well packer material, although thought to be inert, is reacting and causing fluctuating
contaminant concentrations. The packer was installed in an effort to isolate sump in MW-3 which
was one of several construction issues identified in MW-3. The sump was thought to be a major
contributor to the inconsistent, historic results in MW-3. EFRI and DWMRC have been aware of the
well construction issues at MW-3 since 2005, and as indicated in past communication, a replacement
well, well MW-3A, was installed in close proximity to MW-3 in order to determine if the
inconsistent results in MW-3 were valid. Based on eleven years of monitoring results for monitoring
well MW-3A, which do not show the same issues as MW-3, it has been determined that the
exceedances at monitoring well MW-3 are likely due to poor well construction, and that based on
historical contaminants found in this well, including organic chemicals (THF), monitoring well MW-
3 should be plugged and abandoned. Suitability of MW-3A as a replacement for MW-3 is further
discussed in Attachment A. Based on the suitability of MW-3A as a replacement for MW-3, and as
noted in a letter from DWMRC dated November 8, 2016, EFRI has agreed to plug and abandon MW-
3 and therefore a Plan and Time Schedule to address the most recent 2 exceedances will not be
completed. Pursuant to a request from DWMRC, EFRI will submit a Plan and Schedule for the
abandonment of MW-3.
MW-12
• Selenium has exceeded the GWCL for both the Q2 2016 sampling event and the Q3 2016
sampling event. This consecutive exceedance is addressed in the SAR, dated October 10, 2012.
As a result of the SAR, the GWCLs have been recalculated and accepted by DRC. The
recalculated GWCLs will become effective upon their publication in the next revision of the
GWDP. As a result of DRC’s acceptance of the recalculated GWCLs, a plan and schedule to
Letter to Mr. Scott Anderson
November 11, 2016
Page 9
address this consecutive exceedance is not necessary and will not be submitted. Until such time as
the new GWCLs become effective, the exceedances will continue to be noted and reported.
MW-18
• Thallium has exceeded the GWCL for both the Q2 2016 sampling event and the Q3 2016
sampling event. This consecutive exceedance is addressed in the SAR, dated October 10, 2012.
In the October 10, 2012 SAR, EFRI requested the removal of GWCLs for the far upgradient wells
(MW-1, MW-18, and MW-19) at the Mill which cannot be impacted by Mill activities. In
correspondence dated April 25, 2013, DWMRC noted “DWMRC agrees with the justification
provided by EFR, that far upgradient wells are not likely to be impacted by current Mill
activities...” and has recommended the removal of GWCLs for MW-18 from the next revision of
the GWDP. A plan and schedule is not necessary because the exceedance is not caused by Mill
activities and was previously discussed in the October 10, 2012 SAR. Until such time as the
GWCLs are removed, the exceedances will continue to be noted and reported.
MW-24
• Cadmium has exceeded the GWCL for both the Q2 2016 sampling event and the Q3 2016
sampling event. This consecutive exceedance is addressed in the SAR, dated October 10, 2012
and the Plan and Time Schedule which was submitted to DWMRC on March 3, 2016 and
approved by DWMRC on April 4, 2016. A SAR was submitted on June 24, 2016. Therefore, a
plan and schedule for assessment will not be submitted under separate cover within 30 days of
this Exceedance Notice.
• Thallium has exceeded the GWCL for both the Q2 2016 sampling event and the Q3 2016
sampling event. This consecutive exceedance is addressed in the SAR, dated October 10, 2012
and the Plan and Time Schedule which was submitted to DWMRC on March 3, 2016 and
approved by DWMRC on April 4, 2016. A SAR was submitted on June 24, 2016. Therefore, a
plan and schedule for assessment will not be submitted under separate cover within 30 days of
this Exceedance Notice.
• Field pH has been slightly outside (slightly lower than) the GWCL for both the Q2 2016 sampling
event and the Q3 2016 sampling event. This consecutive exceedance is addressed in the SAR,
dated October 10, 2012 and the Plan and Time Schedule which was submitted to DWMRC on
March 3, 2016 and approved by DWMRC on April 4, 2016. A SAR was submitted on June 24,
2016. Therefore, a plan and schedule for assessment will not be submitted under separate cover
within 30 days of this Exceedance Notice.
MW-27
• The chloride concentration exceeded its GWCL for both the Q2 2016 sampling event and the Q3
2016 sampling events. As mentioned above, a CAP has been submitted and approved to address
nitrate+nitrite contamination which is expected to address chloride in groundwater. The actions
specified in the CAP are currently being implemented; therefore a plan to address this
consecutive exceedance is not necessary and is not being submitted.
• The nitrate+nitrite concentration exceeded its GWCL for both the Q2 2016 sampling event and
the Q3 2016 sampling events. As mentioned above, a CAP has been submitted and approved to
address nitrate+nitrite contamination which is expected to address chloride in groundwater. The
actions specified in the CAP are currently being implemented; therefore a plan to address this
consecutive exceedance is not necessary and is not being submitted.
Letter to Mr. Scott Anderson
November 11, 2016
Page 10
• Chloride has exceeded the GWCL for both the Q2 2016 sampling event and the Q3 2016
sampling event and during previous quarters. As mentioned above, a CAP has been submitted and
approved and the specified actions are currently being implemented; therefore a plan to address
this consecutive exceedance is not necessary and is not being submitted.
• Field pH has been slightly outside (slightly lower than) the GWCL for both the Q2 2016 sampling
event and the Q3 2016 sampling event. As mentioned above, site-wide pH issues and trends are
addressed in reports submitted on November 9, 2012 and December 7, 2012. As a result of the
November 7, 2012 report, the GWCLs have been recalculated and accepted by DWMRC. The
recalculated GWCLs will become effective upon their publication in the next revision of the
GWDP. As a result of DWMRCs acceptance of the recalculated GWCLs, a plan and schedule to
address this consecutive exceedance is not necessary and will not be submitted. Until such time as
the new GWCLs become effective, the exceedances will continue to be noted and reported.
• Chloride has exceeded the GWCL for both the Q2 2016 sampling event and the Q3 2016
sampling event and during previous quarters. As mentioned above, a CAP has been submitted and
approved and the specified actions are currently being implemented; therefore a plan to address
this consecutive exceedance is not necessary and is not being submitted.
2.1 Semi-annual Wells with New Exceedances Reported in Q3
One new single exceedance for the Q3 2016 semi-annual well sampling program is listed below. This
exceedance will not result in an accelerated sampling frequency because MW-03 will be abandoned as
discussed above.
• Nickel in MW-3 was above the GWCL in the Q3 sampling event.
MW-28
MW-32
Yours truly,
ENERGY FUELS RESOURCES (USA) INC.
Kathy Weinel
Quality Assurance Manager
cc:David Frydenlund
Harold Roberts
David Turk
Logan Shumway
Scott Bakken
Table 1 - GWCL Exceedances for Second Quarter 2016 under the August 24, 2012 GWPP
.Q3 2010 Results 04 2010 Results
Monitoring Well
(Water Class)Constituent Exceeding GWCL GWCL in August 24,
2012 GWDP
Q1 2010 Sample
Date Ql 2010 Result Q2 2010 Sample
Date Q2 2010 Result
May 2010
Monthly
Sample Date
May 2010
Monthly Result
June 2010
Monthly
Sample Date
June 2010
Monthly-
Result
July 2010
Monthly
Sample Date
July 2010
Monthly
Result
August 2010 Monthly
Sample Date
August 2010
Monthly Result
Q3 2010
Sample Date
Q3 2010
Result
October 2010
Monthly Sample
Date
October 2010
Monthly
Result
Q4 2010
Sample Date
Q4 2010
Result
December 2010
Monthly Sample Date
December 2010
Monthly Result
Required Quarteirly Sampling WeiLs
MW-11 (Class II)Manganese (ug/L)131.29 2/10/2010 134 4/28/2010 137 5/24/2010 122 6/16/2010 99 7/20/2010 123 8/25/2010 138 9/8/2010 128 10/20/2010 141 11/11/2010 133 12/15/10 158
MW-14 (Class III)Field pH (S.U.)6.5 - 8.5 2/2/2010 6.45 4/21/2010 6.29 5/21/2010 6.36 6/16/2010 6.45 7/20/2010 7.19 8/25/2010 6.48 9/8/2010 6.51 10/20/2010 6.60 11/10/2010 6.37 12/15/2010 6.47
MW-25 (Class HI)
Field pH (S.U.)6.5 - 8.5 6.53 7.2 NA
NS
NA NA NA
9/8/2010
6.58 NA
11/10/2010
6.36 NA
Chloride (mg/L)35 2/3/2010 31 4/28/2010 31 NS NA NA NS NA NS NA 31 NS NA 31 NS NA
Cadmium (ug/L)1.5 1.26 1.44 NA NA NA NA 1.4 NA 1.26 NA
Uranium (ug/L)6.5 5.93 6.43 NA NA NA NA 6.57 NA 5.89 NA
MW-26 (Class III)
Nitrate + Nitrite (as N) (mg/L)0.62
2/2/2010
1.3 2 0.3
6/16/2010
0.4 0.6 0.6
9/26/2010
0.7 0.4
11/15/2010
0.2 0.4
Uranium (ug/L)41.8 58.7 66.7 37.4 36.6 34.4 71.8 72.7 37.5 30.4 29.6
Chloroform (ug/L)70 700 1700 8(M)940 900 2800 2100 1000 1900 14(H)
Chloride (mg/L)58.31 72 4/22/2010 57 5/21/2010 80 47 7/21/2010 52 8/16/2010 49 64 10/20/2010 52 48 12/15/2010 52
Field pH (S.U.)6.74 - 8.5 6.59 7.18 6.36 6.98 6.45 6.39 6.60 6.61 6.49 6.45
Methylene Chloride (ug/L)5 1 9.9 NR 2.2 12 24 45 5.5 16 1.2
MW-30 (Class II)
Nitrate + Nitrite (as N) (mg/L)2.5
2/9/2010
16.1 15.8
5/21/2010
17
6/15/2010
15.3 7/21/2010 16 8/24/2010 16
9/14/2010
9/21/2010
15 15
11/9/2010
15 16
Chloride (mg/L)128 127 97 NA NA NS NA NS NA 111 NA 126 NA
Uranium (ug/L)8.32 6.82 6.82 NA NA NS NA NS NA 7.10 NA 6.64 NA
Field pH (S.U.)6.5 - 8.5 6.81
4/27/2010
6.55 6.62 7.47
7/21/2010
7/27/2010 6.80 (6.82)8/24/2010 6.73 6.80 (6.84)
10/19/2010
6.77 6.75
12/14/2010
6.65
Fluoride (mg/L)0.51 0.35 0.35 NA NA NS NA NS NA 0.36 NA 0.36 NA
Selenium (ug/L)34 32 35.3 NA NA 7/27/2010 33.5 8/24/2010 35.6 32.6 32.4 32.2 30.5
MW-31 (Class III)
Nitrate + Nitrite (as N) (mg/L)5 21.7 22.5 5/21/2010 23 6/15/2010 21.1 7/21/2010 20 8/24/2010 22 21 10/19/2010 20
11/9/2010
20 20
TDS (mg/L)1320 1150 1220 NS NA NS NA NS NA NS NA 1330 NS NA 1320 NS
Chloride (mg/L)143 128 128 NS NA NS NA NS NA NS NA
9/13/2010
(9/21/10)
139 NS NA 138 NS
Selenium (ug/L)71 2/9/2010 60.8 4/20/2010 59.6 NS NA NS NA NS NA NS NA 64.4 NS NA 60 12/14/2010 NS
Field pH (S.U.)6.5 - 8.5 6.96 7.38 5/21/2010 6.95 6/15/2010 7.01 7/21/2010 7.80 8/24/2010 7.10 7.66(7.13)10/19/2010 6.92 6.98 6.95
Uranium (ug/L)9.1 7.12 6.74 NS NA NS NA NS NA NS NA 7.23 NS NA 6.72 NS
Sulfate (mg/L)532 507 522 NS NA NS NA NS NA NS NA 527 NS NA 539 NS
MW-35 (Class II)
Manganese (ug/L)200 NA
NS
NA
NS
NA
NS
NA
NS
NA
NS
NA
NS
NA NA
11/30/2010
698 NA
Thallium (ug/1)0.5 NA NA NA NA NA NA NA NA 1.14 NA
Gross Alpha minus Rn & U
(pCi/L)3.75
NS
NA NA NA NA NA NA NA NA 2.6
NS
NA
Field pH (S.U.)6.5 - 8.5 NA NA NA NA NA NA NA
NS
NA 7.46 NA
Selenium (ug/L)12.5 NA NA NA NA NA NA NA NA ND NA
Uranium (ug/L)7.5 NA NA NA NA NA NA NA NA 27.2 NA
Reqiuired Semi-Animal Sampling Wells
MW-01 (Class II)
Chloride (mg/L)22.1 NA 18
NS
NA
NS
NA NA
NS
NA
NS
NA NA
11/8/2010
15 NA
Field pH (S.U.)6.77 - 8.5 NS NA 5/5/2010 7.86 (6.87)NA NA NS NA NA NA NS NA 6.96 NS NA
Sulfate (mg/L)838 NA 805 NA NA NA NA NA NA 792 NA
MW-03 (Class III)
Selenium (ug/L)37 NA 37.2
NS
NA
NS
NA NA
NS
NA
9/20/2010
35.5 NA
11/19/2010
38.8 NA
Field pH (S.U.)6.5 - 8.5 NA
5/3/2010
6.14(6.25)NA NA NA NA 6.39 NA 6.35 NA
Beryllium (ug/L)2 NA <0.5 NA NA
NS
NA NA NA NA <0.5 NA
Cadmium (ug/L)4.67 NA 0.78 NA NA NA NA NA NA 0.63 NA
Zinc (ug/L)173.19
NS
NA 96 NA NA NA NA NA NA 40 NA
Thallium (ug/1)1.6 NA 1.31 NA NA NA NA NA NS NA 1.34 NS NA
Sulfate (mg/L) 3663 NA 3490 NA NA NA NA NA NA 3430 NA
Nitrate + Nitrite (as N) (mg/L)0.73 NA 0.3 NA NA NA NA NA NA 0.4 NA
Tetrahydrofuran (ug/L)23 NA 1 NA NA NA NA NA NA 1 NA
Nickel (ug/L)KM)NA <20 NA NA NA NA NA NA <20 NA
Manganese (ug/L) 4233 NA 168 NA NA NA NA NA NA 143 NA
Fluoride (Mg/L)0.68 NA 0.71 NA NA NA NA 0.63 NA 0.77 NA
MW-3A (Class HI)Field pH (S.U.)6.5 - 8.5
NS
NA
5/4/2010
6.23 (6.24)
NS
NA
NS
NA
KIC
NA
NS
NA
9/21/2010
6.42 NA
11/22/2010
6.21 NA
Sulfate (mg/L)3640 NA 3680 NA NA INo NA NA 3630 NA 3850 NS NA
Selenium (ug/L)89 NA 81.4 NA NA NA NA NS NA 94.8 NA
MW-05 (Class II) Uranium (ug/L)7.5 NS NA 4/26/2010 0.39 NS NA NS NA NS NA NS NA NS NA NS NA 11/11/2010 11.6 NS NA
MW-12 rClaw IITl Selenium (ug/L)25 NS NA 4/27/2010 25.7 NS NA NS NA NS NA NS NA 9/20/2010 31.9 NA 11/19/2010 27.6 NA1V1W-1Z (lo-SN 111^Field pH (S.U.)6.5 - 8.5 NS NA 7.16 NA NA NA NA 6.62
NS NA 6.47 NS NA
MW-IS tClass ITIl Selenium (ug/L)128.7 NS NA 4/21/2010 100 NS NA NS NA NS NA NS NA NS NA VIC NA 11/11/2010 99.5 NS NA1*1 TT 1 VV, 1U.1.) Ill/Field pH (S.U.)6.62 - 8.5 IN .5 NA 6.98 NA NA NA NA NA NS NA 6.57 NA
Q1 2010 Results Q2 2010 Results QB 2010 Results Q4 2010 Results
Monitoring Well
(Water Class)
GWCL in Current
GWDP Q1 Sample Date Q1 Result Q2 Sample Date Q2 Result May Monthly
Sample Date
May Monthly
Result
June Monthly
Sample Date
June Monthly
Result
July Monthly
Sample Date
July Monthly
Result
August Monthly
Sample Date
August Monthly
Result
Q3 Sample
Date Q3 Result October Monthly
Sample Date
October
Monthly
Result
Q4 Sample
Date Q4 Result December Monthly
Sample Date
December Monthly
Result
Required Semi-Annual Sampling Wells, amtinued
Thallium (ug/1)1.95 NA 3.73 NA NA NA NA 3.64 NA 3.57 NA
MW-18 (Class III)Sulfate (mg/L)1938.9 NA 1950 NA NA NA NA 1930 NA 1910 NA
Field pH (S.U.) 6.25-8.5
NS NA 5/4/2010 6.2 NS NA NS NA NS NA NS NA 9/15/2010 7.23 NS NA 11/18/2010 6.37 NS NA
TDS (mg/L) 3198.77 NA 3280 NA NA NA NA 3190 NA 3030 NA
MW-19 (Class III)Field pH (S.U.)6.78-8.5
NS
NA
5/4/2010
6.61 (6.66)
NS
NA
NS
NA
NS
NA
NS
NA
9/15/2010
6.93
NS
NA
11/18/2010
6.8
NS
NA
Nitrate + Nitrite (as N) (mg/L)2.83 NA 2.6 NA NA NA NA NA NA 2.4 NA
Cadmium (ug/L)2.5 NA 4.28 NA NA NA NA 5.06 NA 3.22 NA
Fluoride (mg/L)0.36 NA 0.14 NA NA NA NA NA NA 0.18 NA
MW-24 (Class HI)Sulfate (mg/I.)2903 NS NA 5/6/2010 2560 NS NA NS NA NS NA NS NA 9/21/2010 NA NS NA 11/17/2010 2760 NS NA
Thallium (ug/L)1 NA 1.3 NA NA NA NA 1.57 NA 1.09 NA
Field pH (S.U.)6.5 - 8.5 NA 5.91 (5.78)NA NA NA NA 6.64 NA 6.1 NA
Nitrate + Nitrite (as N) (mg/I.)5.6 NA 5.8 NA NA NA NA 5.9 NA 5.7 NA
Chloride (mg/L)38 NA 42 NA NA NA NA 42 NA 45 NA
MW-27 (Class III)Sulfate (mg/L)462 KIC NA 469 KIC NA KTC NA KTO NA KIO NA 0/14 /''I/11 C\461 VIC NA 1 1 / 1 O /'I A 1 A
452 VIC NA
Field pH (S.U.)6.5 - 8.5 INa NA j/3/<tUlU 6.78 NA NS NA NS NA NS NA W14/ZU1U 7.68 INS NA II/IZ/ZUIU 6.84 INS NA
TDS (mg/L)1075 NA 1160 NA NA NA NA 1060 NA 1110 NA
Gross Alpha minus Rn & U
(pCi/L)2 NA 1.6 NA NA NA NA NA NA 2.4 NA
Chloride (mg/L)105 NA 108 NA NA NA NA 106 NA 107 NA
Cadmium (ug/L)5.2 NA 4.20 NA NA NA NA NA NA 4.11 NA
MW-28 (Class III)Uranium (ug/L) 4.9 NS NA 4/19/2010 3.36 NS NA NS NA NS NA NS NA 9/14/2010 NA NS NA 11/12/2010 3.45 NS NA
Vanadium (ug/L)30 NA <15.0 NA NA NA NA NA NA <15.0 NA
Field pH (S.U.)6.1 -8.5 NA 5.67 NA NA NA NA 5.91 NA 5.72 NA
TDS (mg/I.) 4400 NA 4400 NA NA NA NA NA NA 4390 NA
MW-29 (Class III)Sulfate (mg/I.)2946 NS NA 4/27/2010 2770 NS NA NS NA NS NA NS NA NS NA NS NA 11/9/2010 2690 NS NA
Field pH (S.U.)6.46 - 8.5 NA 6.82 NA NA NA NA NA NA 6.17 NA
Gross Alpha minus Rn & U
(pCi/L)3.33 NA 4.5 NA NA NA NA 2.9 NA 8.8 NA
MW-32 (Class III)Chloride (mg/L)35.39 NS NA 4/20/2010 30 NS NA NS NA NS NA NS NA 9/13/2010 NA NS NA 11/10/2010 35 NS NA
Field pH (S.U.)6.4 - 8.5 NA 6.03 NA NA NA NA 6.33 NA 6.05 NA
Notes:
GWCL values are taken from August 24. 2012 version of GWDP.
NS = Not Required and Not Sampled
INIV = ivcquucu <uIU
Exceedances are shown in yellow
Values in () parentheses are the field pH measurements for the resampled analyses.
Q1 2011 Results
Table 1 - GWCL Exceedances for Second Quarter 2016 under the August 24, 2012 GWDP
Q2 2011 Results Q3 2011 Results Q4 2011 Results
Monitoring Well
(Water Class)
Constituent Exceeding
GWCL
GWCL in
August 24,
2012 GWDP
January 2011
Monthly
Sample Date
January 2011
Monthly Sample
Result
Q1 2011
Sample
Date
Q1 2011 Result
March 2011
Monthly
Sample Date
March 2011
Monthly
Result
Q2 2011
Sample
Date
Q2 2011
Result
May 2011
Monthly
Sample Date
May 2011
Monthly
Result
June 2011
Monthly
Sample Date
June 2011
Monthly Result
July 2011
Monthly
Sample Date
July 2011
Monthly-
Result
Q3 2011
Sample
Date
Q3 2011
Result
September 2011
Monthly Sample Date
September 2011
Monthly Result
Q4 2011
Sample Date
Q4 2011
Result
November
2011 Monthly
Sample Date
November 2011
Monthly Result
December 2011
Monthly Sample
Date
December 2011
Monthly Result
Required Quarterly Sampling Wells
MW-11 (Class II)Manganese (ug/L)131.29 1/11/2011 121 2/2/2011 145 3/15/2011 68 4/4/2011 148 5/10/2011 170 6/15/2011 121 7/6/2011 151 118 9/7/2011 106 10/4/2011 112 11/9/2011 105 12/14/2011 100
MW-14 (Class III)Reid pH (S.U.)6.5 - 8.5 1/11/2011 6.37 2/7/2011 6.22 3/14/2011 6.76 4/4/2011 6.63 5/10/2011 6.37 6/15/2011 5.83 7/5/2011 6.4 8/3/2011 6.23 (6.41)9/8/2011 6.50 10/4/2011 6.71 (6.82)11/9/2011 6.63 12/12/2011 6.84
MW-25 (Class HI)
Field pH (S.U.)6.5 - 8.5 6.44 6.66 6.79 6.7
5/11/2011
6.1 5.77
7/6/2011
6.29 8/3/2011
8/30/11 6.42 (6.54)6.54 6.6
11/9/2011
6.51
12/12/2011
6.87
Chloride (mg/I.)35 1/11/2011 NA 2/2/2011 30 3/15/2011 NA 4/4/2011 31 NA 6/20/2011 NA NA 8/3/2011 32 9/7/2011 NA 10/4/2011 32 NA NA
Cadmium (ug/L)1.5 NA 1.34 NA 1.27 NA NA NA 8/30/2012 1.19 NA 1.27 NA NA
Uranium (ug/L)6.5 7.02 4.77 6.8 5.56 6.72 7.06 6.74 6.37 5.96 5.27 6.56 6.1
MW-26 (Class III)
Nitrate + Nitrite (as N) (mg/I.)0.62 0.2 0.25 0.6 0.8
5/10/2011
0.4 0.3
7/6/2011
0.9 0.6 2.4 0.9
11/9/2011
1.3 2.3
Uranium (ug/L) 41.8 32 69.3 31.8
4/1/2011
60.2 57.4 18.5 57.1 19.0 56.1 58.9 55.6 57
Chloroform (ug/L) 70 SIM)730 1200 390 19IM)730 3IM)1IMM)13IM)440 1200 14IM)
Chloride (mg/L)58.31 1/12/2011 52 2/16/2011 59 3/15/2011 64 64 54 6/20/2011 39 64
5/3/ZU11
8/30/11 60 9/7/2011 66 10/12/2011 61 55 12/14/2011 62
Reid pH (S.U.) 6.74 - 8.5 6.83 6.06 6.89 6.22 6.43 6.52 6.35 6.07(6.58)6.71 6.82 6.75 7.1
Methylene Chloride (ug/L)5 <1.0 10 14 3.1 20 7 2.4 10 7.9 2.6 8.9 11
MW-30 (Class II)
Nitrate + Nitrite (as N) (mg/I.) 2.5 15 16 17
4/11/2011
16
5/10/2011
16 17
7/5/2011
17 14 16
10/4/2011
11/29/2011
16
11/8/2011
16 16
Chloride (mg/L)128 NA 134 NA 134 128 127 127 126 145 129 122 124
Uranium (ug/L)8.32 NA 5.97 NA 6.49 NA NA NA 8 NA 9.83 NA NA
Field pH (S.U.) 6.5 - 8.5
1/10/2011
6.65
2/1/2011
6.96
3/14/2011
7.10 6.83 6.70
6/20/2011
5.66 6.65
8/3/2011
6.61
9/7/2011
6.80 6.96 (6.73)6.83
12/12/2011
7.14
Ruoride (mg/L)0.51 NA 0.34 NA 0.34 NA NA NA 0.33 NA 0.37 NA NA
Selenium (ug/I.)34 36.2 34.7 34 44.4 38.3 38.7 32.4 39.7 32.4 36.6 36.8 38
MW-31 (Class III)
Nitrate + Nitrite (as N) (mg/I.)5 19 21 22
4/1/2011
21
5/10/2011
20 22
7/5/2011
22 20 21
10/3/2011
21 21 21
TDS (mg/L)1320 1240 1220 1250 1370 1290 1330 1280 1300 1300 1320 1290 1330
Chloride (mg/L)143 NS 145 NA 143 143 145 148 148 148 145
11/8/2011
(\ \n91\7\
145 148
Selenium (ug/L)71 1/10/2011 NS 2/1/2011 64.6 3/14/2011 NA 65.2 NS 6/20/2011 NS NS 8/2/2011 66.2 9/6/2011 NS 68.8 NS 12/12/2011 NS
Field pH (S.U.)6.5 - 8.5 6.65 7.21 7.43 7.01 6.73 6.16!6.64 6.67 7.03 7.28
^ 1 1/Z7/ li.)
7.01 (7.34)7.46
Uranium (ug/L)9.1 NS 5.77 NS 6.81 NS NS NS 7.68 NS 8.87 NS NS
Sulfate (mg/L) 532 NS 538 531 503 512 540 532 537 541 539 552 530
MW-35 (Class II)
Manganese (ug/L)200 NA
2/15/2011
248
NS
NA 369
NS
NA NA
7/20/11
348 267
9/7/11
270
10/3/11
271 283 247
Thallium (ug/1)0.5 NA <0.50 NA <0.50 NA NA NA 0.52 NA 0.57 <0.50 0.63
Gross Alpha minus Rn & U
(pCi/L)3.75 NA 2.6 NA 3.7 NA NA NA 4.5 NA 4.4 4.7
12/14/11
4.2
Field pH (S.U.)6.5 - 8.5
NS
NA 7.17 NA
6/7/2011
7.31 NA
NS
NA 6.49
8/30/2011
6.40 6.47 6.59
11/8/2011
6.51 6.90
Selenium (ug/L)12.5 NA ND NA ND NA NA NA 9.3 NA 10.5 NA NA
Uranium (ug/L)7.5 NA 12.7 NA 21.7 NA NA 24.2 18.3 22.3 20.1 24 23.6
R.equired Semi-Annual Sampling Wells
MW-01 (Class II)
Chloride (mg/L)22.1 NA
NS
NA NA 18
NS
NA NA
NS
NA NA NA
10/11/2011
17 NA NA
Field pH (S.U.)6.77 - 8.5 NS NA NA NS NA 4/11/2011 7.06 (7.67)NA NS NA NA NS NA NS NA 7.08 (7.51)NS NA NS NA
Sulfate (mg/L) 838 NA NA NA 704 NA NA NA NA NA 713 NA NA
MW-03 (Class III)
Selenium (ug/L)37 NA
2/15/2011
40.5 NA 45.4
NS
NA NA
NS
NA 46 NA
10/10/2011
46.7 NA NA
Field pH (S.U.)6.5 - 8.5 NA 6.09 NA 6.46 NA NA NA 6.32 NA 6.53 (6.83)NA
NS
NA
Beryllium (ug/L)2 NA NA NA <0.5 NA NA NA NA NA <0.5
NS
NA NA
Cadmium (ug/L)4.67 NA NA NA 1.26 NA NA NA NA NA 1.01 NA NA
Zinc (ug/L)173.19 NA NA NA 104 NA NA NA NA NA 74 NA NA
Thallium (ug/1)1.6 NS NA NA NS NA 4/13/2011 1.02 NA NS NA NA 8/10/2011 NA NS NA 1.38 NA NA
Sulfate (mg/L) 3663 NA NA NA 3060 NA NA NA NA NA 3470 NA NA
Nitrate + Nitrite (as N) (mg/L) 0.73 NA NA NA 0.3 NA NA NA NA NA 0.3 NA NA
Tetrahydrofuran (ug/L)23 NA NA NA 1 NA NA NA NA NA <1.0 NA NA
Nickel (ug/L)100 NA NA NA <20 NA NA NA NA NA <20 NA NA
Manganese (ug/L)4233 NA NA NA 223 NA NA NA NA NA 94 NA NA
Ruoride (Mg/L)0.68 NA 0.69 NA 0.68 NA NA NA 0.96 NA 0.91 NA NA
MW-03A (Class III)Field pH (S.U.)6.5 - 8.5 NA
2/16/2011
6.05 NA
4/13/2011
6.58 NA
NS
NA NA
8/11/2011
6.19
NS
NA
10/11/2011
6.5 (6.92)
NS
NA
NS
NA
Sulfate (mg/L)3640 NA 3730
No
NA 3350 NA NA NA 3560 NA 3750 NA NA
Selenium (ug/L)89 NA 99 NA 85.8 NA NA NA 88.5 NA 95 NA NA
MW-05 (Class II)Uranium (ug/L)7.5 NS NA 2/14/2011 29.5 NS NA 4/12/2011 7.16 NS NA NS NA NS NA 8/9/2011 0.5 NS NA 10/10/2011 4.52 NS NA NS NA
MW-12 (Class HI)Selenium (ug/L)25 HI6 NA 2/15/2011 39.0 NS NA 4/5/2011 21.7 NIC NA NS NA Me NA c/o/oni i 25.4 Me NA i n/A/ini i 35.4 NS NA Me NA
Field pH (S.U.) 6.5 - 8.5
INa
NA 6.43 NA 6.67
INa
NA NA
INa
NA 6.13
iNa
NA
1U/0/ZU1 1
6.7 (6.97)NA
INo
NA
MW-15 (Class HI)Selenium (ug/L)128.7 NA NS NA MC NA 4/12/2011 116 NS NA NS NA NS NA MO NA Me NA in/m/:>n11 112 NS NA Me NA
Field pH (S.U.) 6.62 - 8.5 INo NA NA INo NA 6.88 NA NA NA INo NA I'lij NA 1U/ 1U/^U1 1 6.70 NA NA
Q12011 Results Q2 2011 Results Q3 2011 Results Q4 2011 Results
Monitoring Well
(Water Class)
Constituent Exceeding
GWCL
GWCL in
Current
GWDP
January 2011
Monthly
Sample Date
January 2011
Monthly Sample
Result
Q1 2011
Sample
Date
Q12011 Result
March 2011
Monthly
Sample Date
March 2011
Monthly
Result
Q2 2011
Sample
Date
Q2 2011
Result
May 2011
Monthly
Sample Date
May 2011
Monthly
Result
June 2011
Monthly
Sample Date
June 2011
Monthly Result
July 2011
Monthly
Sample Date
July 2011
Monthly
Result
Q3 2011
Sample
Date
Q3 2011
Result
September 2011
Monthly Sample Date
September 2011
Monthly Result
Q4 2011
Sample Date
Q4 2011
Result
November
2011 Monthly
Sample Date
November 2011
Monthly Result
December 2011
Monthly Sample
Date
December 2011
Monthly Result
Required Semi-Annual Sampling Wells, continued
Thallium (ug/1)1.95 NA 3.49 NA 3.74 NA NA NA 4.0 3.39 NA 3.83 NA NA
MW-18 (Class III)Sulfate (mg/1,)1938.9 NA 1770 NA 1780 NA NA NA 8/10/2011
9/21/11
1910 NA 2020 NA NA
Field pH (S.U.)6.25-8.5 NS NA 2/15/2011 6.27 NS NA 4/6/2011 6.71 NS NA NS NA NS NA 5.95 (6.30)NS NA 10/11/2011 6.55 (6.63)NS NA NS NA
TDS (mg/L) 3198.77 NA 3250 NA 3250 NA NA NA 3190 NA 3220 NA NA
MW-19 (Class III)Field pH (S.U.)6.78-8.5
NS
NA
2/21/2011
6.78
NS
NA
4/5/2011
7.03
NS
NA
NS
NA
NS
NA
7/20/3011
6.65
NS
NA
10/12/2011
6.88 (7.02)
NS
NA
NS
NA
Nitrate + Nitrite (as N) (mg/1,)2.83 NA NS NA 2.6 NA NA NA NS NA 4.0 NA NA
Cadmium (ug/L)2.5 NA 2.78 NA 2.61 NA NA NA 1.46 NA 1.78 NA NA
Fluoride (mg/L)0.36 NA NA NA 0.19 NA NA NA NA NA 0.36 NA NA
MW-24 (Class III)Sulfate (mg/L) 2903 NS NA 2/10/2011 NA NS NA 4/5/2011 2560 NS NA NS NA NS NA 8/4/2011 NA NS NA 10/11/2011 2500 NS NA NS NA
Thallium (ug/L)1 NA 1.42 NA 1.07 NA NA NA <0.50 NA 0.62 NA NA
Field pH (S.U.) 6.5 - 8.5 NA 5.73 NA 6.12 NA NA NA 6.45 NA 6.44 NA NA
Nitrate + Nitrite (as N) (mg/1,)5.6 NA 6 NA 6.4 NA NA NA 6 NA 6.3 NA NA
Chloride (mg/L)38 NA 46 NA 43 NA NA NA 43 NA 44 NA NA
MW-27 (Class III)Sulfate (mg/L)462 VTC NA T/Q/OOl 1 455 KIC NA /5/on i i 442 Kte NA NA we NA o/o/om i 424 wc NA i n/5/on 11 456 we NA we NA
Field pH (S.U.) 6.5 - 8.5 INS NA Z/V/ ZD 11 6.71 INS NA 4/S/ZUl 1 6.79 INS NA INS NA INS NA o/o/ZU11 6.39 INS NA 1U/D/ZU1 i 7.17 INS NA INS NA
TDS (mg/I.)1075 NA 1090 NA 1190 NA NA NA 1090 NA 1110 NA NA
Gross Alpha minus Rn & U
(pCi/L)2 NA 0.7 NA 1.1 NA NA NA 0.8 NA 1.5 NA NA
Chloride (mg/L)105 NA 114 NA 109 NA NA NA 105 NA 143 NA NA
Cadmium (ug/L)5.2 NA NA NA 4.13 NA NA NA NA NA 3.99 NA NA
MW-28 (Class HI)Uranium (ug/I.) 4.9 NS NA 2/14/2011 NA NS NA 4/11/2011 3.29 NS NA NS NA NS NA 8/8/2011 NA NS NA 10/5/2011 3.19 NS NA NS NA
Vanadium (ug/L)30 NA NA NA <15.0 NA NA NA NA NA <15.0 NA NA
Field pH (S.U.)6.1 -8.5 NA 5.69 NA 6.01 NA NA NA 5.78 NA 6.07 (6.11)NA NA
TDS (mg/I.) 4400 NA NA NA 4080 NA NA NA NA NA 4280 NA NA
MW-29 (Class III)Sulfate (mg/I.) 2946 NS NA NS NA NS NA 4/18/2011 2600 NS NA NS NA NS NA 8/9/2011 NA NS NA 10/5/2011 2850 NS NA NS NA
Field pH (S.U.)6.46 - 8.5 NA NA NA 6.45 NA NA NA 6.20 NA 6.52 NA NA
Gross Alpha minus Rn & U
(pCi/L)3.33 NA 1.5 NA 4.6 NA NA NA
8/2/2011
8/30/11
1.9 NA 3.7 NA NA
MW-32 (Class III)Chloride (mg/I.)35.39 NS NA 2/9/2011 NA NS NA 4/1/2011 33 NS NA NS NA NS NA NA NS NA 10/3/2011 34 NS NA NS NA
Field pH (S.U.)6.4 - 8.5 NA 5.99 NA 6.14 NA NA NA 6.10 (6.20)NA 6.35 NA NA
Notes:
GWCL values are taken from August 24, 2012 version of GWDP.
NS = Not Required and Not Sampled
iniv = ivcquucu cuiu i»ui
NA = Not Applicable
Exceedances are shown in yellow
Values in () parentheses are the field pH measurements for the resampled analyses.
Table 1 - GWCL Exceedances for Second Quarter 2016 under the August 24, 2012 GWDP
02 2012 Results Q3 2012 Results Q4 2012 Results
Monitoring Well
(Water Class)
Constituent Exceeding
GWCL
GWCL in
August 24,
2012 GWDP
January 2012
Monthly
Sample Date
January 2012
Monthly Result
Q1 2012
Sample Date
Q1 2012
Result
March 2012
Monthly Sample
Date
March 2012
Monthly Result
April 2012
Monthly
Sample Date
April 2012
Monthly Result
Q2 2012
Sample Date
Q2 2012
Result
June 2012
Monthly
Sample Date
June 2012
Monthly
Result
Q3 2012
Sample
Date
Q3 2012
Result
August 2012
Monthly
Sample Date
August 2012
Monthly
Result
Monthly Sample
Date Monthly Result
October 2012
Monthly
Sample Date
October 2012
Monthly
Result
Q4 2012
Sample Date
Q4 2012
Result
December 2012
Monthly Sample
Date
December 2012
Monthly Result
Required Quarterly Sampling Wells
MW-11 (Class II)Manganese (ug/L)131.29 1/26/2012 102 2/13/2012 154 3/13/2012 121 4/10/2012 132 5/8/2012 127 6/19/2012 122 7/11/2012 135 8/7/2012 166 9/19/2012 130 10/23/2012 161 11/12/2012 138 12/24/2012 137
MW-14 (Class III)Field pH (S.U.) 6.5 - 8.5 1/24/2012 6.36 2/21/2012 6.57 3/14/2012 6.51 4/12/2012 6.97 5/9/2012 6.73 6/19/2012 6.90 7/11/2012 6.89 8/7/2012 6.58 9/18/2012 7.08 10/23/2012 6.83 11/27/2012 6.52 12/18/2012 6.60
MW-25 (Class III)
Field pH (S.U.)6.5 - 8.5
1/25/2012
6.63
2/14/2012
6.83
3/14/2012
6.55
4/9/2012
6.58 6.73
6/18/2012
6.99
7/10/2012
6.88
8/6/2012
6.55
9/18/2012
6.54
10/22/2012
6.54
11/12/2012
6.47
12/24/2012
6.62
Chloride (mg/L)35 NA 30 NA NA 5/2/2012 30 NA 33 NA NA NA 28.8 NA
Cadmium (ug/L)1.5 NA 1.31 NA NA 1.33 NA 1.24 NA NA NA 1.56 NA
Uranium (ug/L)6.5 6.6 6.5 6.93 6.52 5.90 7.6 6.45 6.72 6.01 6.37 6.61 4.83
MW-26 (Class III)
Nitrate + Nitrite (as N)
(mg/L)0.62
1/25/2012
1.9 2/15/2012 1.2
3/14/2012
3
4/11/2012
3.4 2.9
6/19/2012
2.3 7/11/2012 1.9
8/8/2012
1.6
9/19/2012
1.8
10/24/2012
3.5
11/15/2012
0.55
12/24/2012
1.46
Uranium (ug/L)41.8 64.6 2/21/2012 59.4 31.2 42.2 18.2 66.0 28.4 67.4 64.9 26.9 56.8 51.3
Chloroform (ug/L)70 1900 2/15/2012 3300 2900 2900 5/7/2012
6/26120 \2
1700 24(H)8/16/2012 970 2200 23(H)4720 4020 1250
Chloride (mg/L)58.31 68 40 74 82 74 85 7/11/2012 78 78 67 2.62 52.9 65.9
Field pH (S.U.) 6.74 - 8.5 6.59 2/21/2012 6.72 (6.91)
(6.71)6.39 6.88 7.00 (7.01)7.00 7/11/2012
8/16/2012 7.10(6.80)6.60 7.40 6.63 6.60 6.78
Methylene Chloride (ug/L)5 13 2/15/2012 24 27 20 10 16 8/16/2012 4.9 17 9.8 15.0 34.6 5.5
MW-30 (Class II)
Nitrate + Nitrite (as N)
(mg/L)2.5 1/24/2012 17
2/14/2012
17
3/14/2012
18
4/10/2012
17 16
6/18/2012
15
7/10/2012
17
8/7/2012
18
9/19/2012
16
10/23/2012
16.2
11/13/2012
18.5
12/26/2012
17.2
Chloride (mg/L)128 124 126 128 128 124 131 128 139 130 135 114 122
Uranium (ug/L)8.32 NS NA 1.42 8.38 7.84 6.81 7.8 7.64 8.04 7.67 7.86 7.03 5.80
Field pH (S.U.)6.5 - 8.5 1/24/2012 6.52 7.12 6.86 7.05
5/2/2012
6.95 7.10 7.25 6.95 7.85 6.80 6.67 6.95
Fluoride (mg/1.)0.51 NS NA 0.38 NA NA 0.34 NA 0.33 NA NA NA 0.329 NA
Selenium (ug/L)34 1/24/2012 33.3 35 39.5 39.1 32.3 37 38.5 38.4 41.9 45.2 36 31.6
MW-31 (Class III)
Nitrate + Nitrite (as N)
(mg/L)5
1/24/2012
21
2/13/2012
21
3/13/2012
22
4/9/2012
21 20
6/18/2012
6/29/2012
21.6
7/9/2012 1
21 21 21
10/22/2012
18
11/6/2012
23.6
12/18/2012
22.2
TDS (mg/L)1320 1360 1240 1400 1380 1410 1460 1400 1400 1460 1320 1230 1270
Chloride (mg/L)143 155 150 152 160
5/2/2012
151 138 161 175 172 157 189 170
Selenium (ug/L)71 NS 67.8 NS NS 70.2 NA 74 8/6/2012 NA 9/18/2012 NA NA 76.9 NA
Field pH (S.U.)6.5 - 8.5 6.78 7.37 7.13 7.14 7.19 7.28 (7.63)7.53 6.96 7.1 7.05 7.04 7.10
Uranium (ug/L)9.1 NS 7.96 NS NS 7.34 NS 8.17 NS NS NS 8.73 NS
Sulfate (mg/L)532 539 538 517 547 532 497 529 571 561 545 557 664
MW-35 (Class II)
Manganese (ug/L)200
1/24/2012
264
2/14/2012
253
3/13/2012
269
4/10/2012
277 258
6/19/2012
304
7/10/2012
272 273 283
10/23/2012
253
11/13/2012
241
12/18/2012
240
Thallium (ug/1)0.5 <0.50 0.65 0.71 0.59 0.66 < 0.50 0.57 0.61 0.54 0.517 0.554 0.5
Gross Alpha minus Rn & U
(pCi/L)3.75 6.5 4.1 6.2 4.1 4.5 4.9 3.5 4.2 5.4 4.31 4.23 6.5
Field pH (S.U.)6.5 - 8.5 6.35 6.67 6.48 6.84
5/2/2012
6.61 6.90 6.87
8/8/2012
6.74
9/19/2012
6.81 6.43 6.50 6.60
Selenium (ug/L)12.5 NA 19.7 NA NA 11.4 7.0 15.9 18.8 8.2 19.0 15.4 12.1
Uranium (ug/L)7.5 16.1 24.7 24.9 22.4 22.2 22.5 24.5 26.2 22.9 22.4 21.8 21
Required Semi-Annual Sampling Wells
Chloride (mg/L)22.1 NA NA NA NA 18 NA NA NA NA NA 18.5 NA
MW-01 (CLASS II)Field pH (S.U.)6.77 - 8.5 NS NA NS NA NS NA NS NA 5/1/2012 7.19 NS NA NS NA NS NA NS NA NS NA 11/27/2012 6.98 NS NA
Sulfate (mg/L)838 NA NA NA NA 659 NA NA NA NA NA 846 NA
Selenium (ug/L)37 NA 43.1 NA NA 52.8 NA 51.1 NA NA NA 58.9 NA
Field pH (S.U.)6.5 - 8.5 NA 6.63 NA NA 6.67 NA 6.99 NA NA NA 6.55 NA
Beryllium (ug/L)2 NA NA NA NA <0.5 NA NA NA NA NA <0.5 NA
Cadmium (ug/L)4.67 NA NA NA NA 1.06 NA NA NA NA NA 0.954 NA
MW-03 (Class III)
Zinc (ug/L)173.19 NA NA NA NA 68 NA NA NA NA NA 46.1 NA
Thallium (ug/l)1.6 NS NA 2/29/2012 NA NS NA NS NA 5/14/2012 1.37 NS NA NA NA NS NA NS NA NS NA 11/28/2012 1.16 NS NA
Sulfate (mg/L)3663 NA NA NA NA 3140 NA NA NA NA NA 2340 NA
Nitrate + Nitrite (as N)
(mg/L)0.73 NA NA NA NA 0.4 NA NA NA NA NA 0.419 NA
Tetrahydrofuran (ug/L)23 NA NA NA NA <1.0 NA NA NA NA NA <1.0 NA
Nickel (ug/L)100 NA NA NA NA <20 NA NA NA NA NA <20 NA
Manganese (ug/L) 4233 NA NA NA NA 114 NA NA NA NA NA 89.1 NA
Fluoride (Mg/L)0.68 NA 0.86 NA NA 1.04 NA 0.96 NA NA NA 1.26 NA
MW-03A (Class III)Field pH (S.U.)6.5 - 8.5
NS
NA
3/1/2012
6.46
NS
NA
NS
NA
5/1 S/7017
6.68
NS
NA
7/19/2012
7.01
NS
NA NA
MG
NA 6.35
MG
NA
Sulfate (mg/L)3640 NA 3020 NA 1 No NA 1 Jil Zy) 1Z 3220 NA 37(H)NA INS NA NS NA i i/zv/zuiz 2780 INS NA
Selenium (ug/L)89 NA 65.8 NA NA 85.1 NA 99.3 NA NA NA 111 NA
MW-05 (Class II)Uranium (ug/l.)7.5 NS NA 2/28/2012 18.6 NS NA NS NA 5/9/2012 1.23 NS NA 7/16/2012 0.75 NS NA NS NA NS NA 11/27/2012 0.402 NS NA
MW 17 fPlsniii ITU Selenium (ug/L)25
NS NA 7/70/7017 NA NS NA MS NA <1/1 A/oni o 19.6 MG NA -T/i 'j/'ini 20.7 K1G NA vrc NA NA 1 l)^"7 /*71\ 1 *7
23.0 NAivi w iz (v_.loss ill;Field pH (S.U.)6.5 - 8.5 IN o NA U Vi! ZU1Z 6.81 INS NA INS NA D/iU/ZUlZ 6.91 INS NA //1 //ZUIZ 6.98 INS NA NS NA NS NA 11/27/2012 6.54 NS NA
MW-15 )Cl»ss III;Selenium (ug/L)128.7
NS NA 2/22/2012 NA NS NA NS NA S/O/7017 152 MS NA 7/17/2012 120 xre NA VIC NA MG NA 1 1 /1 ^ /7A 1 *7 117 vrc NA
IVI YY i 111)Field pH (S.U.)6.62 - 8.5 lYlO NA 6.84 INS NA INo NA Jtyt Zu 1Z 6.63 INS NA 7.05 INS NA NS NA INS NA 11/14/2012 6.86 INS NA
Q1 2012 Results Q2 2012 Results 03 2012 Results 04 2012 Results
Monitoring Well
(Water Class)
Constituent Exceeding
GWCL
GWCL in
Current
GWDP
January 2012
Monthly
Sample Date
January 2012
Monthly Result
Q1 2012
Sample Date
Q1 2012
Result
March 2012
Monthly Sample
Date
March 2012
Monthly Result
April 2012
Monthly
Sample Date
April 2012
Monthly Result
Q2 2012
Sample Date
Q2 2012
Result
June 2012
Monthly
Sample Date
June 2012
Monthly
Result
Q3 2012
Sample
Date
Q3 2012
Result
August 2012
Monthly
Sample Date
August 2012
Monthly
Result
September 2012
Monthly Sample
Date
September 2012
Monthly Result
October 2012
Monthly
Sample Date
October 2012
Monthly
Result
Q4 2012
Sample Date
Q4 2012
Result
December 2012
Monthly Sample
Date
December 2012
Monthly Result
Required Semi-Annual Sampling Wells, continued
Thallium (ug/1)1.95 NA 3.63 NA NA 3.51 NA 3.73 NA NA NA 3.2 NA
MW-18 (Class III)Sulfate (mg/L)1938.9 NA 1920 NA NA 1790 NA 1900 NA NA NA 1210 NA
Field pH (S.U.)6.25-8.5 NS NA 2/27/2012 6.6 NS NA NS NA 4/30/2012 6.59 NS NA 7/18/2012 6.64 NS NA NS NA NS NA 11/26/2012 6.51 NS NA
TDS (mg/L)3198.77 NA 3230 NA NA 3280 NA 3220 NA NA NA 3160 NA
MW-19 (Class III)Field pH (S.U.) 6.78-8.5
NS
NA
2/28/2012
6.83
NS
NA
NS
NA
5/16/2012
6.86
NS
NA
7/19/2012
7.21
NS
NA
NS
NA
NS
NA
12/13/2012
6.71
NS
NA
Nitrate + Nitrite (as N)
(mg/L)2.83 NA 3.9 NA NA 3.7 NA 4 NA NA NA 3.96 NA
Cadmium (ug/L)2.5 NA 2.25 NA NA 2.01 NA 4.7 NA NA NA 1.35 NA
Fluoride (mg/L)0.36 NA NA NA NA 0.14 NA NA NA NA NA 0.558 NA
MW-24 (Class III)Sulfate (mg/I.)2903 NS NA 2/23/2012 NA NS NA NS NA 5/10/2012 2490 NS NA 7/18/2012 NA NS NA NS NA NS NA 11/29/2012 2310 NS NA
Thallium (ug/L)1 NA 0.96 NA NA 0.74 NA 1.36 NA NA NA 0.666 NA
Field pH (S.U.)6.5 - 8.5 NA 6.03 NA NA 6.21 NA 6.45 NA NA NA 6.01 NA
Nitrate + Nitrite (as N)
(mg/L)5.6 NA 6.4 NA NA 6.2 NA 6.7 NA NA NA 6.9 NA
Chloride (mg/L)38 NA 45 NA NA 46 NA 47 NA NA NA 44.2 NA
MW-27 (Class III)Sulfate (mg/L) 462 NA 451 NA VTP NA c /1 /on i ”1 446 KTC NA "7/1 t.l'MW 453 NA KTC?NA KIC NA ii/ii nc\ 11 451 NIC NA
Field pH (S.U.)6.5 - 8.5 NS NA 2/28/2012 7.24 NS NA NS NA D/l/ZUl^7.03 INS NA //lO/ZutZ 7.40 INS NA INS NA INS NA 11/13/ZU1Z 6.69 INS NA
TDS (mg/1.)1075 NA 1140 NA NA 1170 NA 1150 NA NA NA 1070 NA
Gross Alpha minus Rn & U
(pCi/L)2 NA 2.3 NA NA 0.8 NA 1.2 NA NA NA 1.33 NA
Chloride (mg/L)105 NA 109 NA NA 114 NA 7/16/2012
8/1/2012 105 NA NA NA 115 NA
Cadmium (ug/L)5.2 NA NA NA NA 3.85 NA NS NA NA NA NA 4.37 NA
MW-28 (Class III)Uranium (ug/L)4.9 NS NA 2/28/2012 NA NS NA NS NA 5/8/2012 3.44 NS NA NS NA NS NA NS NA NS NA 11/14/2012 3.45 NS NA
Vanadium (ug/1.)30 NA NA NA NA <15.0 NA NS NA NA NA NA <15.0 NA
Field pH (S.U.)6.1 -8.5 NA 6.22 NA NA 6.15 NA 7/16/2012
8/1/2012 6.38 (5.81)NA NA NA 5.98 NA
TDS (mg/I.)4400 NA NA NA NA 4600 NA 8/1/2012 4420 NA NA NA 4430 NA
MW-29 (Class III)Sulfate (mg/I.)2946 NS NA 2/22/2012 NA NS NA NS NA 5/8/2012 2750 NS NA NS NA NS NA NS NA NS NA 11/14/2012 1340 NS NA
Field pH (S.U.)6.46 - 8.5 NA 7.12 NA NA 6.47 NA 7/16/2012
8/1/2012 6.68 (6.45)NA NA NA 6.48 NA
Gross Alpha minus Rn & U
(pCi/L)3.33 NA 1.8 NA NA 2.4 NA 1.4 NA NA NA 2.97 NA
MW-32 (Class HI)Chloride (mg/I.)35.39 NS NA 2/21/2012 NA NS NA NS NA 4/30/2012 33 NS NA 7/9/2012 1.4 NS NA NS NA NS NA 11/6/2012 32.1 NS NA
Field pH (S.U.)6.4 - 8.5 NA 6.57 NA NA 6.40 NA 6.72 NA NA NA 6.23 NA
Notes:
GWCL values are taken from August 24. 2012 version of GWDP.
NS = Not Required and Not Sampled
ini\ = ivcquucu tiiiu iNin
j
NA = Not Applicable
Exceedances are shown in yellow
Values in () parentheses are the field pH measurements for the resampled analyses.
Table 1 - GWCL Exceedances for Second Quarter 2016 under the August 24, 2012 GWDP
Q1 2013 Results Q2 2013 Results 03 2013 Results Q4 2013 Results
Monitoring Well
(Water Class)
Constituent Exceeding
GWCL
GWCL in August
24, 2012 GWDP
January 2013
Monthly
Sample Date
January
2013
Monthly
Result
Q1 2013 Sample
Date
Q1 2013
Result
March 2013
Monthly
Sample Date
March 2013
Monthly
Result
April 2013
Monthly
Sample Date
April 2013
Monthly
Result
Q2 2013 Sample
Date
Q2 2013
Result
June 2013
Monthly
Sample Date
June 2013
Monthly
Result
Q3 2013
Sample Date
Q3 2013
Result
August 2013
Monthly
Sample Date
August 2013
Monthly
Result
September 2013
Monthly
Sample Date
September 2013
Monthly Result
October 2013
Monthly Sample
Date
October 2013
Monthly
Result
Q4 2013
Sample Date
Q4 2013
Result
December
2013 Monthly
Sample Date
December 2013
Monthly Result
Required Quarterty Sampling WeiIs
MW-11 (Class II)Manganese (ug/L)131.29 1/23/2013 115 2/20/2013 139 3/20/2013 164 4/16/2013 181 5/14/2013 144 6/25/2013 135 7/10/2013 138 8/20/2013 158 9/18/2013 134 10/22/2013 129 11/19/2013 152 12/18/2013 196
MW-14 (Class IH)Field pH (S.U.)6.5 - 8.5 1/23/2013 6.48 2/26/2013 6.52 3/20/2013 6.48 4/16/2013 7.58 5/14/2013 7.39 6/25/2013 6.54 7/11/2013 6.47 8/20/2013 6.86 9/19/2013 6.48 10/22/2013 6.77 11/20/2013 6.51 12/18/2013 6.74
Field pH (S.U.)6.5 - 8.5 6.65 6.62 6.41 7.00 7.19 6.61 6.32 6.74 6.54 6.81 6.62 6.73
MW-25 (Class III)Chloride (mg/L)35 1/22/2013 NA 2/20/2013 36.1 3/19/2013 NA 4/17/2013 NA 5/14/2013 28.1 6/24/2013 30.4 7/10/2013 28 8/19/2013 31.1 9/17/2013 29.6 10/22/2013 28.6 11/19/2013 29 12/17/2013 31.2
Cadmium (ug/L)1.5 NA 1.35 1.40 1.36 1.52 1.31 1.41 1.57 1.31 1.50 1.35 1.23
Uranium (ug/L)6.5 5.97 5.39 5.68 5.56 5.88 5.35 6.22 6.42 5.99 5.94 7.13 NA
Nitrate + Nitrite (as N) (mg/L)0.62 1.66 1.38 1.61 1.73 2.01 3.04 2.11*1.98 1.77 3.60 4.10 1.38 2.56
Uranium (ug/L)41.8 65.7 57.8 69 58.8 64.3 71.3 70 72.3 19.9 58.8 75.8 70.4
Chloroform (ug/L)70 1270 1500 1340 1680 1210 4030*2410 2110 4170 3420 1220 1680
MW-26 (Class III)Chloride (mg/L)58.31 1/24/2013 63.5 2/20/2013 77 3/20/2013 73.6 4/17/2013 70.4 5/23/2013 63.1 0/3/ZU13
6/25/2013 87.8 77.9*7/11/2013 72.1 8/20/2013 70.8 9/18/2013 77.3 10/23/2013 63.8 11/20/2013 62.3 12/18/2013 65.7
Field pH (S.U.)6.74 - 8.5 6.51 6.71 6.70 6.96 7.31 6.85 6.43 7.41 6.71 6.82 6.83 6.93
Methylene Chloride (ug/L)5 6.49 5.53 8.31 10.2 4.07 52.4* [12.1]14.2 14.6 42.4 29.8 7.64 7.48
Nitrate + Nitrite (as N) (mg/L)2.5 19.2 21.4 14.3 16.8 18.8 16.1 17.6 16.4 16.9 19.7 19.5 20.7
Chloride (mg/L)128 128 129 126 117 119 127 130 126 131 128 124 134
MW-30 (Class II)
Uranium (ug/L)8.32 8.36 1A 6.85 7.08 6.31 8.22 7.48 7.07 7.00 6.91 8.57 NA
Field pH (S.U.)6.5 - 8.5
1/23/2013
6.88
2/26/2013
6.93
3/20/2013
6.91
4/17/2013
7.42
5/15/2013
7.54
6/25/2013
6.93
7/10/2013
6.87
8/20/2013
7.06
9/18/2013
6.78
10/22/2013
6.96
11/20/2013
6.84
12/18/2013
7.10
Fluoride (mg/L)0.51 NA 0.373 NA NA 0.331 NA 0.368 NA NA NA 0.335 NA
Selenium (ug/L)34 37.2 42.3 39 37.3 39.4 32.1 36.5 36.3 35.2 39.5 36.6 35.1
Nitrate + Nitrite (as N) (mg/L)5 22.8 19.3 19.1 18.8 23.8 20.0 21.7 16.0 21.2 21.2 23.9 24.2
TDS (mg/L)1320 1270 1390 1420 1260 1540 1380 1510 1440 1500 1460 1320 1500
Chloride (mg/L)143 176 174 168 171 169 179 182 183 193 188 174 203
MW-31 (Class III)Selenium (ug/L)71 1/22/2013 NS 2/19/2013 74.1 3/19/2013 81.8 4/16/2013 72.9 5/13/2013 75.9 6/24/2013 73.7 7/9/2013 75.7 8/19/2013 73.2 9/17/2013 72.6 10/23/2013 80.7 11/18/2013 74.5 12/17/2013 79.8
Field pH (S.U.)6.5 - 8.5 6.94 7.32 7.28 6.37 7.92 7.10 6.98 7.36 7.06 7.35 6.99 7.23
Uranium (ug/L)9.1 NS 7.33 NS NS 7.63 NS 7.90 NS NS NS 9.03 NS
Sulfate (mg/I.)532 611 644 611 668 630 659 659 656 666 637 609 656
Manganese (ug/L)200 247 272 246 243 252 243 250 262 257 240 251 260
Thallium (ug/1)0.5 <0.5 <0.5 0.505 <0.5 0.715 0.946 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5
Gross Alpha minus Rn & U
(pCi/L)3.75 6.62 5.09 9.51 4.75 4.92 3.24 5.70 3.92 5.10 3.73 5.39 4.74
MW-35 (Class II)
Field pH (S.U.)6.5 - 8.5
1/23/2013
6.54
2/26/2013
6.68
3/19/13
6.43
4/17/2013
6.96
5/13/2013
7.33
6/24/2013
6.70
7/9/2013
6.51
8/19/2013
7.02
9/17/2013
6.50
10/23/2013
6.83
11/19/2013
6.52
12/17/2013
6.73
Selenium (ug/L)12.5 11.0 10.8 22.6 11.8 16.1 13.6 8.01 <5 <5 19.8 <5 <5
Uranium (ug/L)7.5 23.6 21.3 22.1 20.0 22.0 19.3 23.0 21.4 20.2 21.8 24.1 20
Required Semi-Annujal Sampling Wells
Chloride (mg/L)22.1 NA NA NA NA 17.8 NA NA NA NA NA 18.7 NA
MW-01 (Class II)Field pH (S.U.)6.77 - 8.5 NS NA 3/12/2013 6.77 NS NA NS NA 5/21/2013 7.57 NS NA 7/23/2013 7.04 NS NA NS NA NS NA 12/4/2013 7.04 NS NA
Sulfate (mg/L)838 NA 761 NA NA 839 NA 911 NA NA NA 930 NA
Selenium (ug/L)37 NA 51.8 NA NA 46.3 NA 52.0 NA NA NA 32.8 NA
Field pH (S.U.) 6.5 - 8.5 NA 6.20 NA NA 7.14 NA 6.46 NA NA NA 6.78 NA
Beryllium (ug/L)2 NA NA NA NA <0.5 NA NA NA NA NA <0.5 NA
Cadmium (ug/L)4.67 NA NA NA NA 1.42 NA NA NA NA NA <0.5 NA
MW-03 (Class III)
Zinc (ug/L)173.19 NA NA NA NA 72.1 NA NA NA NA NA 20.3 NA
Thallium (ug/1)1.6 NS NA 3/12/2013 NA NS NA NS NA 5/22/2013 1.21 NS NA 7/18/2013 NA NS NA NS NA NS NA 12/11/2013 1.1 NS NA
Sulfate (mg/L)3663 NA NA NA NA 2180 NA NA NA NA NA 3760 NA
Nitrate + Nitrite (as N) (mg/L)0.73 NA NA NA NA 0.456 NA NA NA NA NA 1.21 NA
Tetrahydrofuran (ug/L)23 NA NA NA NA <1.0 NA NA NA NA NA 4.86 NA
Nickel (ug/L)100 NA NA NA NA <20 NA NA NA NA NA <20 NA
Manganese (ug/L)4233 NA NA NA NA 99.1 NA NA NA NA NA 975 NA
Fluoride (Mg/L)0.68 NA 0.902 NA NA 0.994 NA 1.18 NA NA NA 1.28 NA
MW-03A (Class HI)
Field pH (S.U.)6.5 - 8.5
NS
NA
3/13/2013
6.84
NS
NA
NS
NA
5/23/2013
7.10
we
NA
7/19/2013
6.50
wc
NA
we
NA
we
NA
it/i i /mi i
6.98
vrc
NA
Sulfate (mg/L)3640 NA 3480 NA NA 3120 INS NA 3670 INS NA INS NA INS NA Iz/11/ZUI3 3360 NS NA
Selenium (ug/L)89 NA 88.7 NA NA 75.6 NA 79.7 NA NA NA 77.9 NA
MW-05 (Class II)Uranium (ug/L)7.5 NS NA 3/11/2013 36 NS NA NS NA 5/14/2013 1.33 NS NA 7/18/2013 0.574 NS NA NS NA NS NA 12/4/2013 20.1 NS NA
MW-12 ITH Selenium (ug/L)25 KTC NA 'X/fU'yn i 'i 19.6 NA KIC NA 19 KTC NA T / 1 *7 /A A 1 A 20.5 NA NA NA 21.7 NA
Field pH (S.U.) 6.5 - 8.5 INS NA j/o/zUI3 6.56 IN5 NA NS NA 5/15//U13 7.19 NS NA 7/17/2013 6.60 NS NA NS NA NS NA 12/9/2013 6.69 NS
NA
MW-I 5 fClass III)Selenium (ug/L)128.7 NS NA 137 NS NA NA 120 we NA T /1 O /A A 1 1 100 we NA xie NA wc NA 106 NA
Field pH (S.U.) 6.62 - 8.5 ISO NA J/Jl ZU 1 J 6.75 NA INS NA 3/ 13/zUls 7.27 Ns NA //lo/2U13 6.68 INS NA INS NA INS NA 11/zU/zUI^6.61 NS NA
Q1 2013 Results Q2 2013 Results Q3 2013 Results Q4 2013 Results
Monitoring Well
(Water Class)
Constituent Exceeding
GWCL
GWCL in Current
GWDP
January 2013
Monthly
Sample Date
January
2013
Monthly
Result
Q1 2013 Sample
Date
Q1 2013
Result
March 2013
Monthly
Sample Date
March 2013
Monthly
Result
April 2013
Monthly
Sample Date
April 2013
Monthly
Result
Q2 2013 Sample
Date
02 2013
Result
June 2013
Monthly
Sample Date
June 2013
Monthly
Result
Q3 2013
Sample Date
Q3 2013
Result
August 2013
Monthly
Sample Date
August 2013
Monthly
Result
September 2013
Monthly Result
October 2013
Monthly Sample
Date
October 2013
Monthly
Result
Q4 2013
Sample Date
Q4 2013
Result
December
2013 Monthly
Sample Date
December 2013
Monthly ResultMonthly
Sample Date
Required Semi-Annual Sampling Wells, continued
MW-18 (Class III)
Thallium (ug/1)1.95
NS
NA
2/25/2013
3.26 NA NA
5/20/2013
2.81
NS
NA 3.32 NA
NS
NA
NS
NA 3.06
NS
NA
Sulfate (mg/L)1938.9 NA 1270 NA NA 1860 NA 1860 NA NA NA 2000 NA
Field pH (S.U.) 6.25-8.5 NA 6.35 NS NA NS NA 6.97 NA 7/15/2013 6.45 NS NA NA NA 12/3/2013 6.38 NA
TDS (mg/L)3198.77 NA 3350 NA NA 3160 NA 3170 NA NA NA 3240 NA
MW-19 (Class HI)Field pH (S.U.) 6.78-8.5
NS
NA
3/13/2013
6.50
NS
NA
NS
NA
5/20/2013
7.16
NS
NA
7/15/2013
6.91
NS
NA
NS
NA
NS
NA
12/3/2013
6.58
NS
NA
Nitrate + Nitrite (as N) (mg/L)2.83 NA 3.61 NA NA 4.21 NA 3.66 NA NA NA 3.70 NA
MW-24 (Class HI)
Cadmium (ug/L)2.5
NS
NA
3/13/2013
2.0 NA
NS
NA 1.32
NS
NA 6.72
NS
NA NA
NS
NA 1.15
NS
NA
Fluoride (mg/L)0.36 NA 0.355 NA NA 0.211 NA 0.288 NA
NS
NA NA 0.310 NA
Sulfate (mg/L) 2903 NA NA NS NA NA 5/22/2013 2070 NA 7/19/2013 NA NA NA NA 12/12/2013 2490 NA
Thallium (ug/L)1 NA 0.88 NA NA 0.618 NA 1.64 NA NA NA 0.707 NA
Field pH (S.U.)6.5 - 8.5 NA 6.29 NA NA 6.77 NA 5.80 NA NA NA 6.08 NA
MW-27 (Class III)
Nitrate + Nitrite (as N) (mg/L)5.6
NS
NA
2/25/2013
7.94 NA
NS
NA 7.09 NA 6.97
NS
NA
NS
NA
NS
NA 7.89
NS
NA
Chloride (mg/L)38 NA 50.3 NA NA
5/21/2013
44.3 NA 44.2 NA NA NA 45.0 NA
Sulfate (mg/L)462 NA 431 KTC NA NA 497 NS NA ■7/1 ”7/in 1 7 NA NA NA NA 442 NA
Field pH (S.U.) 6.5 - 8.5 NA 7.03 iNa NA NA 7.58 NA //1 //zUl J 7.00 NA NA NA 12/4/2013 7.16 NA
TDS (mg/L)1075 NA 1140 NA NA 1110 NA 1110 NA NA NA 1100 NA
Gross Alpha minus Rn & U
(pCi/L)2 NA <1.0 NA NA 1.57 NA <1.00 NA NA NA 1.28 NA
MW-28 (Class HI)
Chloride (mg/L)105
NS
NA
3/5/2013
110 NA
NS
NA
5/15/2013
102
NS
NA 107
NS
NA
NS
NA
NS
NA 109
NS
NA
Cadmium (ug/L) 5.2 NA NA NA NA 4.61 NA NA NA NA NA 4.74 NA
Uranium (ug/L)4.9 NA NA NS NA NA 3.58 NA 7/17/2013 NA NA NA NA 12/4/2013 3.34 NA
Vanadium (ug/L)30 NA NA NA NA <15.0 NA NA NA NA NA <15.0 NA
Field pH (S.U.)6.1 -8.5 NA 6.00 NA NA 6.63 NA 5.97 NA NA NA 6.10 NA
MW-29 (Class HI)
TDS (mg/L)4400
NS
NA
3/6/2013
4500 NA
NS
NA
5/23/2013
4340
NS
NA 4270
NS
NA
NS
NA
NS
NA 4370
NS
NA
Sulfate (mg/L) 2946 NA NA NS NA NA 2450 NA 7/17/2013 NA NA NA NA 11/20/2013 2750 NA
Field pH (S.U.)6.46 - 8.5 NA 6.36 NA NA 6.88 NA 6.37 NA NA NA 6.35 NA
MW-32 (Class HI)
Gross Alpha minus Rn & U
(pCi/L)3.33
NS
NA
2/19/2013
5.02 NA
NS
NA
5/13/2013
3.72
NS
NA 6.46
NS
NA
NS
NA
NS
NA 1.86 NA
Chloride (mg/L)35.39 NA NA NS NA NA 32.3 NA 7/9/2013 NA NA NA NA 11/18/2013 33.7 NS NA
Field pH (S.U.)6.4 - 8.5 NA 6.52 NA NA 7.10 NA 6.39 NA NA NA 6.29 NA
Notes:
GWCL values are taken from August 24. 2012 version of GWDP.
NS = Not Required and Not Sampled
mtv = ivcquucu <uiu
NA = Not Applicable
Exceedances are shown in yellow
Values in () parentheses are the field pH measurements for the resampled analyses.
Table 1 - GWCL Exceedances for Second Quarter 2016 under the August 24. 2012 GWDP
Monitoring Well
(Water Class)
Constituent Exceeding
GWCL
GWCL in August 24,
2012 GWDP
Q1 2014 Re
January 2014
Monthly Sample
Date
suits
January 2014
Monthly Result
February 2014
Monthly Sample
Date
February 2014
Monthly Result
Q1 2014 Sample
Date
Q1 2014
Result
April 2014
Monthly Sample
Date
April 2014
Monthly
Result
Q2 2014 R<
May 2014
Monthly
Sample Date
ssults
May 2014
Monthly
Result
Q2 2014
Sample
Date
Q2 2014
Result
July 2014
Monthly
Sample Date
July 2014
Monthly
Result
August
2014
Monthly
Sample
Date
August
2014
Monthly
Result
Q3 2014
Sample
Date
Q3 2014
Result
October 2014
Monthly
Sample Date
October 2014
Monthly Result
Q4 20:
Q4 2014
Sample Date Q4 2014 Result
December
2014 Monthly
Sample Date
December 2014
Monthly Result
Requirec Quarterly Siimpling Wells
MW-11 (Class II)Manganese (ug/L)131.29 1/8/2014 141 2/24/2014 163 3/11/2014 134 4/25/2014 136 5/14/2014 128 6/3/2014 166 7/29/2014 139 8/20/2014 139 9/8/2014 74.0 10/6/2014 157 11/17/2014 125 12/10/2014 186
MW-14 (Class III)Field pH (S.U.)6.5 - 8.5 1/8/2014 6.60 2/24/2014 6.16 3/11/2014 6.33 4/23/2014 6.84 5/13/2014 6.60 6/3/2014 7.63 7/28/2014 6.44 8/20/2014 7.07 9/2/2014 6.41 10/7/2014 6.46 11/12/2014 6.25 12/10/2014 6.40
MW-25 (Class III)
Field pH (S.U.)6.5 - 8.5 6.37 6.10 6.27 7.18 6.80 6.74 6.36
8/18/2014
7.17 6.50 6.49
11/4/2014
6.31
12/9/2014
6.36
Chloride (mg/L)35 1/7/2014 31 2/13/2014 30.4 3/10/2014 31.5 4/28/2014 31 5/13/2014 26.4 6/2/2014 30.9 7/28/2014 NA NA 9/3/2014 30 10/6/2014 NA 29.6 NA
Cadmium (ug/L)1.5 1.39 1.29 1.29 LSI 1.34 1.24 1.30 1.30 1.30 1.41 1.57 1.27
Uranium (ug/L)6.5 NA 5.83 6.26 10.6 7.43 6.07 5.9 6.1 6.0 6.67 6.04 5.75
MW-26 (Class III)
Nitrate + Nitrite (as N)
(mg/L)0.62 2.42 2.12 1.30 1.20 1.64 1.42 2.0
8/20/2014
1.00 1.10 0.704
11/18/2014
1.09
12/10/14
12/15/14
<0.100
Uranium (ug/L)41.8 81.7 72.2 51.8 96.0 90.6 75.0 86.5 74.4 48.4 75.4 66.0 42.5
Chloroform (ug/L)70 1580 2810 2800 1310 1580 1450 2330 2200 1580 894 1520 2280
Chloride (mg/I.)58.31 1/8/2014 69.7 2/24/2014 70.4 3/12/2014 61.0 4/30/2014 62.1 5/14/2014 61.0 6/5/2014 63.2 7/29/2014 80.0 59.0 9/4/2014 68.0 10/7/2014 57.7 54.2 65.5
Field pH (S.U.)6.74 - 8.5 6.80 6.78 6.50 7.19 7.13 6.78 6.60 7.28 6.67 6.85 6.09 6.25 (6.44)
Methylene Chloride (ug/L)5 6.52 25.8 15.5 5.54 10.2 6.73 9.6 43.3 10.9 3.78 7.34 28.4
MW-30 (Class II)
Nitrate + Nitrite (as N)
(mg/I.)2.5 20.3 18.4
3/11/2014
21.3
4/23/2014
18.3
5/14/2014
17.9 19.4
7/29/2014
15.6
8/20/2014
13.8 16.8 11.0
11/10/2014
16.2
12/10/2014
17.1
Chloride (mg/I.)128 131 135 144 154 128 128 140 139 136 136 154 138
Uranium (ug/L)8.32 NA 6.83 7.84 6.84 9.82
6/3/2014
7.35 7.40 7.60 7.70 7.76 7.65 7.67
Field pH (S.U.)6.5 - 8.5
1/8/2014
6.74
2/25/2014
6.80 6.56 7.06 6.88 6.89 6.76 7.51
9/9/2014
6.82
10/7/2014
6.92 6.22 6.77
Fluoride (mg/I.)0.51 NA 0.332 0.357 NA NA 0.342 NA NA 0.40 NA 0.262 NA
Selenium (ug/L)34 35.6 35.8 38.0 32.8 37.0 35.4 42.9 48.5 53.6 38.9 36.8 37.5
MW-31 (Class III)
Nitrate + Nitrile (as N)
(mg/L)5 24.0 20.6
3/10/2014
26.2
4/28/2014
19.1
5/13/2014
23.3
6/2/2014
23.1
7/28/2014
19.0
8/18/2014
15.2 18.9 15.9
11/14/2014
20.9
12/9/2014
17.0
TDS (mg/L)1320 1510
2/17/2014
1460 1490 1440 1510 1520 1400 1410 1460 1420 1520 1450
Chloride (mg/L)143 194 197 230 230 200 173 200 210 210 205 204 215
Selenium (ug/L)71 1/7/2014 74.4 75.8 77.2 85.4 74.5 69.4 77.9 82.8 9/3/2014 81.5 10/6/2014 78.9 73.0 71.1
Field pH (S.U.)6.5 - 8.5 7.13 6.45 6.53 7.45 6.83 8.23 6.88 7.60 6.94 6.97 6.69 6.73
Uranium (ug/L)9.1 NS 7.65 7.96 NS NS 7.72 NS NS 8.40 NS 7.71 NS
Sulfate (mg/L)532 558 480 681 527 639 555 600 620 560 606 639 687
MW-35 (Class II)
Manganese (ug/L)200
1/8/2014
252
2/11/2014
247
3/11/14
204
4/25/2014
194
5/14/2014
249
6/4/2014
202
7/29/2014
212 191
9/3/2014
177
10/6/2014
228
11/12/2014
222
12/9/2014
232
Thallium (ug/l)0.5 0.535 <0.5 <0.5 0.582 0.521 <0.5 <0.5 <0.5 0.6 <0.5 <0.5 <0.5
Gross Alpha minus Rn & U
(pCi/L)3.75 4.12 3.98 4.33 2.95 3.67 3.36 3.09 4.70 3.93 4.14 3.92 4.54
Field pH (S.U.)6.5 - 8.5 6.54 6.07 6.32 6.79 7.10 6.83 6.55
8/20/2014
7.07 6.46 6.54 6.35 6.25
Selenium (ug/L)12.5 8.95 12.3 14.1 18.6 17.0 13.9 13.2 28.9 31.4 15.5 10.1 7.5
Uranium (ug/L)7.5 20.8 20.6 21.5 30.6 26.9 21.9 26.5 20.3 23.6 23.9 19.6 20.3
Required Semi-Annual iSampling Wells
MW-01 (Class H)
Chloride (mg/I.)22.1 NA NA
2/20/2014
NA
NS
NA
NS
NA 20.4 NA
NS
NA
9/10/2014
NA
NS
NA
11/17/2014
19
NS
NA
Field pH (S.U.)6.77 - 8.5 NS NA NS NA 6.61 NA NA 5/28/2014 7.11 NS NA NA 6.75 NA 6.87 NA
Sulfate (mg/L)838 NA NA 836 NA NA 909 NA NA 810 NA 920 NA
MW-03 (Class III)
Selenium (ug/l.)37
NS
NA NA
2/26/2014
37.0
NS
NA
NS
NA 69.5
NS
NA NA 94.0 NA
11/17/2014
62.4
NS
NA
Field pH (S.U.)6.5 - 8.5 NA NA 6.23 NA NA
5/30/2014
6.56 NA NA 6.13 NA 6.37 NA
Beryllium (ug/l.)2 NA NA NA NA NA <0.5 NA NA NA NA <0.5 NA
Cadmium (ug/l.)4.67 NA NA NA NA NA 1.7 NA NA NA NA 2 NA
Zinc (ug/U 173.19 NA NA NA NA NA 94.5 NA NA
9/16/2014
NA NA 98.3 NA
Thallium (ug/l)1.6 NA NS NA NA NA NA 1.28 NA NS NA NA NS NA 1.32 NA
Sulfate (mg/L)3663 NA NA NA NA NA 3460 NA NA 3120 NA 3800 NA
Nitrate + Nitrite (as N)
(mg/L)0.73 NA NA NA NA NA 0.573 NA NA 0.6 NA 0.330 NA
Tetrahydrofuran (ug/L)23 NA NA NA NA NA <1.0 NA NA NA NA <1.0 NA
Nickel(ug/L)100 NA NA NA NA NA <20 NA NA NA NA <20 NA
Manganese (ug/l.)4233 NA NA NA NA NA 104 NA NA NA NA 87.000 NA
Fluoride (Mg/L)0.68 NA NA 0.771 NA NA 1.02 NA NA 1.0 NA 1.08 NA
MW-03A (Class III)Field pH (S.U.)6.5 - 8.5
NS
NA
NS
NA
3/5/2014
6.58
NS
NA
NS
NA
5/30/2014
6.60
NS
NA
NS
NA
9/17/2014
6.40
NS
NA
11/12/2014
6.41
NS
NA
Sulfate (mg/L) 3640 NA NA 3100 NA NA 3830 NA NA 3350 NA 3770 NA
Selenium (ug/l.)89 NA NA 92.1 NA NA 104 NA NA 129 NA 88.5 NA
MW-05 (Class 11)Uranium (ug/L)7.5 NS NA NS NA 2/12/2014 22.0 NS NA NS NA 6/4/2014 2.42 NS NA NS NA 9/11/2014 0.90 NS NA 11/12/2014 36.20 NS NA
MW-12 (Class III)Selenium (ug/l.)25 NS NA NS NA 2/12/2014 23.7 NS NA NS NA 6/4/2014 17.20
NS NA NA 9/16/2014 NA NA 11/11/2014 33.30 NS NA
Field pH (S.U.)6.5 - 8.5 NA NA 6.13 NA NA 7.10 NA NS NA 6.47 NS
NA 6.25 NA
MW-15 (Class III)Selenium (ug/l.)128.7 NS NA NS NA 2/25/2014 110 NS NA NS NA 6/4/2014 105 NS NA MO NA 9/2/2014 273 NS NA 11/12/2014 106 NS NA
Field pH (S.U.)6.62 - 8.5 NA NA 6.51 NA NA 6.91 NA IN5 NA 6.38 NA 6.41 NA
Q12014 Results Q2 2014 Results Q3 2014 Results Q4 2014 Results
Monitoring Well
(Water Class)
Constituent Exceeding
GWCL
GWCL in Current
GWDP
January 2014
Monthly Sample
Date
January 2014
Monthly Result
February 2014
Monthly Sample
Date
February 2014
Monthly Result
Q1 2014 Sample
Date
Q1 2014
Result
April 2014
Monthly Sample
Date
April 2014
Monthly
Result
May 2014
Monthly
Sample Date
May 2014
Monthly
Result
Q2 2014
Sample
Date
Q2 2014
Result
April 2014
Monthly
Sample Date
April 2014
Monthly
Result
May 2014
Monthly
Sample
Date
May 2014
Monthly
Result
Q3 2014
Sample
Date
Q3 2014
Result
October 2014
Monthly
Sample Date
October 2014
Monthly Result
Q4 2014
Sample Date Q4 2014 Result
December
2014 Monthly
Sample Date
December 2014
Monthly Result
MW-18 (Class III)
Thallium (ug/1)1.95
NS
NA
NS
NA
2/19/2014
2.77
NS
NA NA 2.42
NS
NA NA
9/9/2014
2.7 NA
11/10/2014
2.88 NA
Sulfate (mg/L)1938.9 NA NA 1650 NA NA 2020 NA NA 1760 NA 1810 NA
Field pH (S.U.)6.25-8.5 NA NA 6.16 NA NS NA 5/27/2014 7.04 NA NS NA 6.40 NS NA 6.10 NS NA
TDS (mg/L) 3198.77 NA NA 3080 NA NA 3260 NA NA 3180 NA 2960 NA
MW-19 (Class HI)Field pH (S.U.)6.78-8.5
NS
NA
NS
NA
2/18/2014
6.29
NS
NA
NS
NA
5/27/2014
7.38
NS
NA
NS
NA
9/11/2014
6.46
NS
NA
11/11/2014
6.33
NS
NA
Nitrate + Nitrite (as N)
(mg/L)2.83 NA NA 3.82 NA NA 3.68 NA NA 0.4 NA 2.91 NA
MW-24 (Class III)
Cadmium (ug/L)2.5 NA
NS
NA
3/6/2014
5.92
NS
NA NA 2.91
NS
NA
NS
NA 1.5
NS
NA
11/19/2014
1.17 NA
Fluoride (mg/L)0.36 NA NA 0.234 NA NA 0.337 NA NA 0.4 NA 0.109 NA
Sulfate (mg/L)2903 NS NA NA NA NA NS NA 5/30/2014 2450 NA NA 9/17/2014 NA NA 3120 NS NA
Thallium (ug/L)1 NA NA 1.85 NA NA 1.23 NA NA 0.6 NA 0.821 NA
Field pH (S.U.)6.5 - 8.5 NA NA 5.89 NA NA 6.07 NA NA 5.09 NA 5.69 NA
MW-27 (Class III)
Nitrate + Nitrite (as N)
(mg/L)5.6 NA
NS
NA
2/25/2014
7.98
NS
NA NA 7.35
NS
NA
NS
NA
9/8/2014
6.30
NS
NA
11/5/2014
7.70 NA
Chloride (mg/L)38 NA NA 47.0 NA NA 45.9 NA NA 46.0 NA 42.6 NA
Sulfate (mg/L)462 xie NA NA 411 NA vie NA 5/28/2014 484 NA NA 414 NA 419 MC NA
Field pH (S.U.)6.5 - 8.5 XNa NA NA 6.62 NA
IN5 NA 7.80 NA NA 6.97 NA 6.70 NA
TDS (mg/L)1075 NA NA 1040 NA NA 1040 NA NA 1020 NA 1090 NA
Gross Alpha minus Rn & U
(pCi/L)2 NA NA 1.08 NA NA 2.33 NA NA 1.16 NA <1.0 NA
MW-28 (Class III)
Chloride (mg/L)105 NA
NS
NA
2/26/2014
113
NS
NA NA
6/18/2014
114
NS
NA
NS
NA
9/16/2014
112
NS
NA
11/5/2014
117 NA
Cadmium (ug/L)5.2 NA NA NA NA NA 5.41 NA NA 4.7 NA 4.15 NA
Uranium (ug/L) 4.9 NS NA NA NA NA NS NA 61.3 NA NA 10.6 NA 21.2 NS NA
Vanadium (ug/L)30 NA NA NA NA NA 109 NA NA 18.5 NA 29.3 NA
Field pH (S.U.)6.1 -8.5 NA NA 6.01 NA NA 6.78 NA NA 5.79 NA 5.72 NA
MW-29 (Class III)
TDS (mg/L)4400 NA
NS
NA
2/25/2014
4500
NS
NA NA
6/3/2014
4200 NA
NS
NA
9/10/2014
4280
NS
NA
11/10/2014
4210
NS
NA
Sulfate (mg/L)2946 NS NA NA NA NA NS NA 2510 NS NA NA NA NA 2760 NA
Field pH (S.U.)6.46 - 8.5 NA NA 6.78 NA NA 7.98 NA NA 6.10 NA 6.11 NA
MW-32 (Class III)
Gross Alpha minus Rn & U
(pCi/L)3.33 NA
NS
NA
2/11/2014
1.94
NS
NA NA
5/23/2014
4.35
NS
NA
NS
NA 9/2/2014 3.69
NS
NA
11/5/2014
2.56 NA
Chloride (mg/L)35.39 NS NA NA NA NA NS NA 35.6 NA NA 8/26/2014 34 NA 33.3 NS NA
Field pH (S.U.)6.4 - 8.5 NA NA 6.15 NA NA 6.64 NA NA 9/2/2014 6.17 NA 6.08 NA
Notes:
GWCL values are taken from August 24. 2012 version of GWDP.
NS = Not Required and Not Sampled
NR = Required and Not Reported
NA = Not Applicable
Exceedances are shown in yellow
Values in () parentheses are the field pH measurements for the resampled analyses.
Table 1 - GWCL Exceedances for Second Quarter 2016 under the August 24, 2012 GWDP
.Q1 2015 Results Q3 2015 Results Q4 2015 Results
Monitoring Well
(Water Class)
Constituent Exceeding
GWCL
GWCL in
August 24,
2012 GWDP
January 2015
Monthly
Sample Date
January 2015
Monthly
Result
Q1 2015
Sample Date
Q1 2015
Result
March 2015
Monthly
Sample Date
March 2015
Monthly
Result
Q2 2015
Sample Date
Q2 2015
Result
May 2015
Monthly
Sample Date
May 2015
Monthly
Result
June 2015
Monthly Sample
Date
June 2015
Monthly
Result
July 2015
Monthly
Sample
Date
July 2015
Monthly
Result
Q3 2015 Sample
Date
Q3 2015
Result
September 2015
Monthly Sample
Date
September 2015
Monthly Result
October 2015
Monthly
Sample Date
October 2015
Monthly
Result
Q4 2015
Sample
Date
Q4 2015
Result
December 2015
Monthly Sample
Date
December 2015
Monthly Result
Required Quarterly Sampling Wells
MW-11 (Class II)Manganese (ug/L)131.29 1/21/2015 177 2/3/2015 138 3/3/2015 149 4/8/2015 170 5/11/2015 123 6/23/2015 149 7/7/2015 178 8/10/2015 138 9/16/2015 160 10/7/2015 237 11/11/2015 126 12/8/2015 139
MW-14 (Class III)Field pH (S.U.)6.5 - 8.5 1/21/2015 6.49 2/3/2015 6.44 3/5/2015 6.05 4/8/2015 6.55 5/11/2015 6.30 6/1/2015 6.65 7/7/2015 6.57 8/11/2015 6.37 9/16/2015 6.51 10/8/2015 6.45 11/3/2015 6.52 12/8/2015 6.45
MW-25 (Class III)
Field pH (S.U.)6.5 - 8.5 6.19
2/4/2015
6.46
3/4/2015
6.32 6.52 6.46 6/1/2015
6/23/2015 6.59, 6.53
7/6/2015
6.70 6.47 6.58
10/6/2015
6.45 6.79
12/8/2015
6.41
Chloride (mg/L)35 1/20/2015 NA 30.5 NA 4/7/2015 31.1 5/11/2015 NA NS NA NA 8/10/2015 36.8 9/15/2015 NA NA 11/11/2015 29.8 31.1
Cadmium (ug/L)1.5 1.44 1.33 1.37 1.27 1.38 6/23/2015 1.42 1.43 1.41 1.31 1.5 1.38 1.45
Uranium (ug/L)6.5 6.54 6.81 6.43 5.86 6.38 5.88 6.25 6.39 6.20 6.40 6.19 6.00
MW-26 (Class HI)
Nitrate + Nitrite (as N)
(mg/L)0.62
1/21/2015
0.30
2/11/2015
2.68
3/4/2015
0.965 0.845
5/12/2015
0.606
6/24/2015
0.588
7/7/2015
1.15 1.75 0.795
10/7/2015
2.36 1.11
12/8/2015
1.200
Uranium (ug/L)41.8 2.96 78.1 72.6 75.7 63.3 67.4 72.1 61.9 56.0 61.2 66.0 65.2
Chloroform (ug/L)70 3570 1190 1020 1520 1160 2610 2560 o/i rw-in i c 1240 2150 2400 2660 3140
Chloride (mg/L)58.31 59.9 77.2 67.2 4/9/2015 61.0 61.4 60.8 67.4 o/l 0/2015
8/17/2015 88.3 9/16/2015 74.5 74.4
11/11/2015 75.3 66.0
Field pH (S.U.)6.74 - 8.5 6.25 6.20 6.23 6.60 6.46 6/3/2015
6/24/2015 6.58, 6.20 6.87 6.54 6.81 6.48 6.80 6.65 6.30
Methylene Chloride (ug/L)5 6.42 5.89 6.95 3.99 4.44 6/24/2015 9.38 11.4 2.17 <1.0 4.27 9.89 12.0
MW-30 (Class II)
Nitrate + Nitrite (as N)
(mg/L)2.5
1/21/2015
19.5
2/4/2015
14.9
3/3/2015
17.3
4/8/2015
17
5/12/2015
16.1
6/24/2015
15.8
7/7/2015
15.3 17.9 17.3
10/7/2015
19.1 16.3
12/9/2015
18.2
Chloride (mg/L)128 144 136 132 142 145 142 145 165 165 137 140 144
Uranium (ug/L)8.32 8.06 8.23 8.35 7.45 8.38 1.46 7.98 8.16 7.72 8.10 7.99 8.22
Field pH (S.U.)6.5 - 8.5 6.41 6.59 6.32 6.67 6.76 6/2/2015
6/24/2015 6.94, 6.32 6.85
8/11/2015
6.73
9/15/2015
6.65 6.88
11/11/2015
6.83 6.79
Fluoride (mg/L)0.51 NA 0.324 NA 0.286 NA NA NA 0.247 NA NA 0.572 NA
Selenium (ug/L)34 37.2 40.9 38.0 37.3 35.7 37.2 39.2 41.6 39.1 43.9 38.6 40.7
MW-31 (Class III)
Nitrate + Nitrite (as N)
(mg/L)5
1/20/2015
20.9
2/2/2015
18.7
3/3/2015
19.8
4/7/2015
19.0
5/11/2015
18.4
6/23/2015
18.0
7/6/2015
18.8 19.9 18.9
10/6/2015
22.0 18.4
12/8/2015
19.5
TDS (mg/L)1320 1540 1520 1530 1680 1700 1630 1440 1530 1480 1540 1460 1580
Chloride (mg/L)143 226 211 209 211 225 228 222 264 231 222 215 231
Selenium (ug/L)71 75.6 79.2 76.2 75.7 71.6 74.4 78.2 8/10/2015 82.2 9/15/2015 79.0 78.6 11/9/2015 77.7 80.4
Field pH (S.U.)6.5 - 8.5 6.49 6.42 6.40 6.80 6.74 6/1/2015
6/23/2015 7.14, 7.08 7.22 6.80 6.73 6.47 6.36 6.70
Uranium (ug/L)9.1 NS 8 NS 8.07 NS NS NS 8.76 NS NS 8.72 NS
Sulfate (mg/L) 532 669 623 616 642 668
O/ZJ/ZUIJ 691 684 640 638 655 646 690
MW-35 (Class II)
Manganese (ug/L)200
1/20/2015
228
2/5/2015
223
3/4/2015
190
4/9/2015
237
5/12/2015
207.0 6/23/2015 214
7/7/2015
185 198
9/15/15 9/22/15
9/28/15
201, 176
10/6/2015
169 210
12/14/2015
Ml
Thallium (ug/1)0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5, <0.5 0.638 <0.5 <0.5
Gross Alpha minus Rn & U
(pCi/L)3.75 6.86 5.61 3.81 4.25 4.47 6/2/2015 4.01 4.93 3.24 4.81, 6.13 4.04 4.47 4.69
Field pH (S.U.)6.5 - 8.5 6.22 6.53 6.26 6.64 6.46 6/2/2015
6/23/2015 6.50, 6.41 6.56
8/10/2015
6.40 6.52, 6.41, 6.49 6.29
11/3/2015
6.72 6.57
Selenium (ug/L)12.5 8.21 14.2 26.6 <5.0 9.11 6/23/2015 13.6 26.1 12.5 16.7, 28.5 39.8 9.96 25.0
Uranium (ug/L)7.5 21.8 20.6 24.4 20.2 22.5 20.7 22.0 22.1 21.3, 22.3 23.8 22.7 21.8
Required Semi-Annutd Sampling Wells
MW-01 (Class II)
Chloride (mg/I.)22.1
NS
NA
2/10/2015
NA
NS
NA
4/15/2015
23.9
NS
NA
NS
NA
NS
NA NA
NS
NA
NS
NA 21.9
NS
NA
Field pH (S.U.)6.77 - 8.5 NA 6.66 NA 7.15 NA NA NA 7/27/2015 7.12 NA NA 11/11/2015 6.83 NA
Sulfate (mg/L)838 NA 813 NA 892 NA NA NA 876 NA NA 830 NA
MW-03 (Class III)
Selenium (ug/L)37
NS
NA
2/11/2015
61.1
NS
NA 4/23/2015
5/20/2015 81, 61.7
NS
NA
NS
NA
NS
NA 68.3 NA
NS
NA 76.0
NS
NA
Field pH (S.U.)6.5 - 8.5 NA 6.12 NA
4/23/2015
4/29/2015
5/20/2015
6.18, 6.51,
6.23 NA NA NA 6.16 NA NA 6.25 NA
Beryllium (ug/L)2 NA NA NA
4/23/2015
5/20/2015
1.44, 2.08 NA NA NA NA NA NA 1.84 NA
Cadmium (ug/L)4.67 NA NA NA 5.03, 14.2 NA NA NA NA NA NA 12.9 NA
Zinc (ug/L)173.19 NA NA NA 238, 373 NA NA NA NA
NS
NA NA 275 NA
Thallium (ug/1)1.6 NA NA NA
4/23/2015
5/20/2015 1.47. 1.51 NA NA NA 7/28/2015 NA NA NA
11/3/2015 1.61 NA
Sulfate (mg/L) 3663 NA 3260 NA
4/23/2015
5/20/2015
3700 NA NA NA 3670 NA NA 3360 NA
Nitrate + Nitrite (as N)
(mg/L)0.73 NA 0.638 NA 0.642 NA NA NA 0.406 NA NA 0.487 NA
Tetrahydrofuran (ug/L)23 NA NA NA <1.0 NA NA NA NA NA NA <1.0 NA
Nickel (ug/L)100 NA NA NA 39.4, 96.2 NA NA NA NA NA NA 86.9 NA
Manganese (ug/L) 4233 NA NA NA 242, 1240 NA NA NA NA NA NA 1020 NA
Fluoride (mg/L)0.68 NA 1.08 NA 1.00 NA NA NA 1.58 NA NA 1.35 NA
MW-03A (Class III)Field pH (S.U.)6.5 - 8.5
NS
NA
2/12/2015
6.15
NS
NA 4/23/2015
4/29/2015 6.59, 6.24
NS
NA
NS
NA
NS
NA 6.34
NS
NA
NS
NA
■ i / a /on i «
6.63
NS
NA
Sulfate (mg/L)3640 NA 3450 NA 4/23/2015 3720 NA NA NA
//2y/2U15
3860 NA NA
11/4/zUIS
3380 NA
Selenium (ug/L)89 NA 94.1 NA 101 NA NA NA 85.9 NA NA 91.7 NA
MW-05 (Class II) Uranium (ug/L)7.5 NS NA 2/10/2015 2.94 NS NA 4/21/2015 1.3 NS NA NS NA NS NA 7/21/2015 0.887 NS NA NS NA 11/4/2015 2.35 NS NA
MW-12 (Class HI)Selenium (ug/L)25 NS NA 2/9/2015 30.0 NS NA 4/21/2015 29.4 NS NA NS NA NS NA H 1 /*7 A 1 C
24.6 NA
NS NA 24.7 NS NA
Field pH (S.U.) 6.5 - 8.5 NA 6.33 NA 4721/2015—6.50. 6.70 NA NA NA 7/21/2015 6.70 NS NA NA
11/17/2015 6.65 NA
MW-15 (Class III)Selenium (ug/L)128.7 NS NA 2/4/2015 125 NS NA 4/13/2015 137 NS NA KIC NA NS NA 104 KIC NA NS NA ii/i^ i c 107 NS NA
Field pH (S.U.) 6.62 - 8.5 NA 6.50 NA 6.82 NA INS NA NA //22/2U15
6.61
NS NA NA 11/16/2015 6.81 NA
Q1 2015 Results Q2 2015 Results Q3 2015 Results Q4 2015 Results
Monitoring Well
(Water Class)
Constituent Exceeding
GWCL
GWCL in
August 24,
2012 GWDP
January 2015
Monthly
Sample Date
January 2015
Monthly
Result
Q1 2015
Sample Date
Q1 2015
Result
March 2015
Monthly
Sample Date
March 2015
Monthly
Result
Q2 2015
Sample Date
Q2 2015
Result
May 2015
Monthly
Sample Date
May 2015
Monthly
Result
June 2015
Monthly Sample
Date
June 2015
Monthly
Result
July 2015
Monthly
Sample
Date
July 2015
Monthly
Result
Q3 2015 Sample
Date
Q3 2015
Result
September 2015
Monthly Result
October 2015
Monthly
Sample Date
October 2015
Monthly
Result
Q4 2015
Sample
Date
Q4 2015
Result
December 2015
Monthly Sample
Date
December 2015
Monthly ResultMonthly Sample
Date
Required S<emi-Annual Sannpling Wells, continued
MW-18 (Class III)
Thallium (ug/1)1.95 NA
2/3/2015
2.89 NA
4/15/2015
2.81
NS
NA
NS
NA
NS
NA
7/27/2015
2.69
NS
NA
NS
NA
11/9/2015
2.68 NA
Sulfate (mg/L)1938.9 NA 1810 NA 1790 NA NA NA 1990 NA NA 2000 NA
Field pH (S.U.)6.25-8.5 NS NA 6.21 NS NA 6.40 NA NA NA 6.43 NA NA 6.30
NS NA
TDS (mg/L)3198.77 NA 3240 NA 3350 NA NA NA 3190 NA NA 3000 NA
MW-19 (Class HI)Field pH (S.U.)6.78-8.5
NS
NA
2/2/2015
6.45
NS
NA
4/14/2015
6.79
NS
NA
NS
NA
NS
NA
7/27/2015
6.78
NS
NA
NS
NA
11/10/2015
6.70
NS
NA
Nitrate + Nitrite (as N)
(mg/L)2.83 NA 2.91 NA 3.58 NA NA NA 2.82 NA NA 2.23 NA
MW-24 (Class HI)
Cadmium (ug/L)2.5 NA
2/12/2015
3.31
NS
NA 1.79 NA
NS
NA
NS
NA
7/29/2015
1.88
NS
NA
NS
NA
11/18/2015
3.75 NA
Fluoride (mg/L)0.36 NA 0.397 NA 0.293 NA NA NA 0.388 NA NA 0.372 NA
Sulfate (mg/L)2903 NS NA 2620 NA 2840 NS NA NA NA 2880 NA NA 2790 NS NA
Thallium (ug/L)1 NA 1.27 NA 0.796 NA NA NA 0.85 NA NA 1.37 NA
Field pH (S.U.)6.5 - 8.5 NA 6.21 NA 5/28/2015
6/24/2015 5.39, 5.98 NA NA NA 5.49 NA NA 5.48 NA
MW-27 (Class III)
Nitrate + Nitrite (as N)
(mg/L)5.6 NA
2/9/2015
3.15
NS
NA 6.27 NA NA
NS
NA
7/21/2015
7.35
NS
NA
NS
NA
11/10/2015
5.60 NA
Chloride (mg/L)38 NA 44.2 NA 47.6 NA NA NA 43.7 NA NA 42.9 NA
Sulfate (mg/L)462 NS NA 402 NA 4/20/2015 429 wc NA MC NA NA 425 NA NA 430 NA
Field pH (S.U.)6.5 - 8.5 NA 6.82 NA 7.09 NA INo NA NA 6.84 NA NA 6.48 NS NA
TDS (mg/L)1075 NA 996 NA 1040 NA NA NA 1010 NA NA 1000 NA
Gross Alpha minus Rn & U
(pCi/L)2 NA <1.0 NA <1.0 NA NA NA <1.0 NA NA <1.0 NA
MW-28 (Class III)
Chloride (mg/L)105 NA
2/9/2015
130
NS
NA
4/21/2015
125 NA NA
NS
NA
7/21/2015
113
NS
NA
NS
NA
11/10/2015
116 NA
Cadmium (ug/L)5.2 NA 4.83 NA 4.59 NA NA NA 4.97 NA NA 4.73 NA
Uranium (ug/L)4.9 NS NA 4.48 NA 6.13 NS NA NS NA NA 4.87 NA NA 4.84 NS NA
Vanadium (ug/L)30 NA <15.0 NA <15.0 NA NA NA <15.0 NA NA <15.0 NA
Field pH (S.U.)6.1 -8.5 NA 5.86 NA 4/21/2015
4/27/2015 6.08, 6.17 NA NA NA 5.91 NA NA 6.22 NA
MW-29 (Class III)
TDS (mg/L)4400 NA
2/10/2015
4430
NS
NA
4/30/2015
4190 NA NA
NS
NA
7/22/2015
4310
NS
NA
NS
NA
11/16/2015
4110 NA
Sulfate (mg/L)2946 NS NA NA NA 2960 NS NA NS NA NA NA NA NA 2740 NS NA
Field pH (S.U.) 6.46 - 8.5 NA 6.42 NA 6.36 NA NA NA 6.30 NA NA 6.37 NA
MW-32 (Class III)
Gross Alpha minus Rn & U
(pCi/L)3.33 NA 2/9/2015 2.19 NA
4/8/2015
1.81 NA
NS
NA
NS
NA
7/23/2015
1.89
NS
NA
NS
NA
11/3/2015
2.19 NA
Chloride (mg/L) 35.39 NS NA 3/17/2015 36.3 NS NA 37.8 NS NA NA NA 37.3 NA NA 34.1 NS NA
Field pH (S.U.)6.4 - 8.5 NA 2/9/2015 6.29 NA 6.37 NA NA NA 6.26 NA NA 6.41 NA
Notes:
GWCL values are taken from August 24, 2012 version of GWDP.
NS = Not Required and Not Sampled
NR = Required and Not Reported
NA = Not Applicable
Exceedances are shown in yellow
Value^iU^arenthe^^r^h^kl^f^Tteasurement^'or the resampled analyses.
Reported from the quarterly chloroform sample
Table 1 - GWCL Exceedances for Second Quarter 2016 under the August 24, 2012 GWDP
Q1 2016 Results Q2 2016 Results Q3 2016
Monitoring Well
(Water Class)
Constituent Exceeding
GWCL
GWCL in
August 24,
2012 GWDP
January 2016
Monthly
Sample Date
January 2016
Monthly
Result
Q1 2016
Sample Date
Q1 2016
Result
March 2016
Monthly
Sample Date
March 2016
Monthly
Result
April 2016
Monthly
Sample Date
April 2016
Monthly
Result
Q2 2016
Sample Date
Q2 2016
Result
June 2016
Monthly
Sample Date
June 2016
Monthly
Result
July 2016
Monthly
Sample Date
July 2016
Monthly
Result
Q3 2016
Sample Date
Q3 2016
Result
September 2016
Monthly
Sample Date
September 2016
Monthly Result Sample Frequency
Requirer Quarterly Sampling Wells
MW-11 (Class II)Manganese (ug/L)131.29 1/20/2016 197 2/8/2016 217 3/3/2016 155 4/12/2016 166 5/3/2016 159 6/14/2016 158 7/13/2016 140 8/16/2016 158 9/14/2016 169 Quarterly
MW-14 (Class III)Field pH (S.U.) 6.5 - 8.5 1/19/2016 6.27 2/15/2016 6.55 3/3/2016 6.66 4/13/2016 6.38 5/4/2016 6.28 6/14/2016 6.24 7/13/2016 6.20 8/17/2016 6.71 9/14/2016 6.43 Quarterly
MW-25 (Class III)
Field pH (S.U.)6.5 - 8.5 6.18
2/8/2016
6.50
3/2/2016
6.57
4/12/2016
6.51
5/3/2016
6.24 6.25
7/12/2016
6.23
8/17/2016
6.57
9/13/2016
6.21 Quarterly
Chloride (mg/L)35 1/19/2016 29.6 31.6 30.9 31.5 30.8 6/14/2016 31.2 29.6 32.2 32.0 Quarterly
Cadmium (ug/L)1.5 1.37 1.51 1.42 1.39 1.43 1.43 1.44 1.37 1.41 Quarterly
Uranium (ug/L)6.5 6.54 6.16 6.22 6.03 6.30 5.99 6.64 6.33 6.48 Quarterly
MW-26 (Class III)
Nitrate + Nitrite (as N)
(mg/L)0.62 0.943
2/16/2016
1.66
3/2/2016
1.95
4/13/2016
0.990
5/4/2016
1.85 1.66
7/14/2016
1.63
8/18/2016
2.70
9/15/2016
1.67 Quarterly
Uranium (ug/L)41.8 29.3 30.4 67.7 53.9 39.7 52.7 45.4 34.2 31.7 Quarterly
Chloroform (ug/L)70 2370 3530 2280 2060 1720 1860 3300 2950 3950 Quarterly
Chloride (mg/L)58.31 1/20/2016 63.5 69.1 76.8 67.4 68.1 6/15/2016 81.6 68.3 78.6 75.6 Quarterly
Field pH (S.U.)6.74 - 8.5 6.27 5.98 6.35 6.50 6.19 6.29 6.20 6.65 6.40 Quarterly
Methylene Chloride (ug/L)5 4.73 8.68 3.93 5.62 3.63 4.12 8.99 6.08 11.9 Quarterly
MW-30 (Class II)
Nitrate + Nitrite (as N)
(mg/L)2.5
1/20/2016
14.6
2/10/2016
20.0
3/2/2016
17.8
4/13/2016
18
5/4/2016
17.3
6/14/2016
18.5
7/13/2016
16.1
8/18/2016
18.0
9/14/2016
17 Quarterly
Chloride (mg/L)128 143 145 142 144 139 142 137 ISO 146 Quarterly
Uranium (ug/L)8.32 8.34 7.76 7.82 7.55 8.18 7.66 8.10 8.23 8.22 Quarterly
Field pH (S.U.)6.5 - 8.5 6.45 6.94 6.51 6.84 6.30 6.28 6.23 6.86 6.60 Quarterly
Fluoride (mg/L)0.51 NA 0.360 <10.00 0.359 0.346 0.36 0.36 0.399 0.368 Quarterly
Selenium (ug/L)34 41.7 42.5 43.2 41.0 42.5 41.8 42.7 43.1 43.0 Quarterly
MW-31 (Class III)
Nitrate + Nitrite (as N)
(mg/L)5
1/19/2016
18.9
2/15/2016
18.8
3/2/2016
18.0
4/12/2016
22.8
5/3/2016
18.6
6/15/2016
19.2 17.4
8/16/2016
19.7
9/13/2016
18.6 Quarterly
TDS (mg/L)1320 1560 1490 1580 1710 1550 1580 1610 1710 1570 Quarterly
Chloride (mg/L)143 228 246 228 254 243 252 241 272 254 Quarterly
Selenium (ug/L)71 85.1 81.0 85.7 81.6 84.6 83.3 7/12/2016 85.6 85.4 85.5 Quarterly
Field pH (S.U.) 6.5 - 8.5 7.04 7.21 6.83 6.93 6.48 7.01 6.49 6.92 6.35 Quarterly
Uranium (ug/L)9.1 NS 8.41 NS NS 9.05 NS NS 9.41 NS
Sulfate (mg/L)532 675 631 654 715 699 748 712 766 703 Quarterly
MW-35 (Class II)
Manganese (ug/L)200
1/19/2016
211
2/10/2016
194
3/2/2016
194
4/12/2016
213
5/3/2016
203
6/15/2016
228 210
8/16/2016
204
9/13/2016
198 Quarterly
Thallium (ug/1)0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 <0.5 Quarterly
Gross Alpha minus Rn & U
(pCi/L)3.75 6.95 2.42 3.88 3.65 3.22 5.39 3.64 2.56 3.68 Quarterly
Field pH (S.U.)6.5 - 8.5 6.35 6.70 6.53 6.51 6.22 6.20
7/12/2016
6.28 6.65 6.21 Quarterly
Selenium (ug/L)12.5 8.62 14.4 20.2 9.2 12.9 6.18 8.60 16.80 18.50 Quarterly
Uranium (ug/L)7.5 21.1 20.8 21.8 19.9 21.2 19.4 21.5 22.2 22.0 Quarterly
Rpniiirorl ‘■XCIJUIICU ckmi-Annual Sa npling Wells
MW-01 (Class II) 1
Chloride (mg/L)22.1
NS
NA
2/10/2016
22.1
NS
NA
NS
NA
4/20/2016
22.0 NA NA 21.5
NS
NA Semi-Annually
Field pH (S.U.)6.77 - 8.5 NA 7.06 NA NA 6.36 NS NA NS NA 8/24/2016 7.21 NA Semi-Annually
Sulfate (mg/L)838 NA 812 NA NA 825 NA NA 866 NA Semi-Annually
MW-03 (Class III)
Selenium (ug/L)37
NS
NA
2/16/2016
<5.00
NS
NA
NS
NA
4/26/2016
<5.00 NA NA
9/22/2016
5.06
NS
NA Semi-Annually
Field pH (S.U.) 6.5 - 8.5 NA 6.21 NA NA 6.15
NS
NA
NS
NA 6.40 NA Semi-Annually
Beryllium (ug/L)2 NA 0.694 NA NA 0.625 NA NA 1.01 NA Semi-Annually
Cadmium (ug/L)4.67 NA 3.71 NA NA 4.71 NA NA 2.72 NA Semi-Annually
Zinc (ug/L)173.19 NA 4210 NA NA 2580 NA NA 2070 NA Semi-Annually
Thallium (ug/l)1.6 NA 1.46 NA NA 1.54 NA NA 1.60 NA Semi-Annually
Sulfate (mg/L)3663 NA 3230 NA NA 3350 NA NA 3010 NA Semi-Annually
Nitrate + Nitrite (as N)
(mg/L)0.73 NA <0.100 NA NA <0.100 NA NA 0.108 NA Semi-Annually
Tetrahydrofuran (ug/L)23 NA 11.6 NA NA 36.1 NA NA 41.3 NA Semi-Annually
Nickel (ug/L)100 NA 76.9 NA NA 83.6 NA NA 113 NA Semi-Annually
Manganese (ug/L)4233 NA 2820 NA NA 4560 NA NA 4510 NA Semi-Annually
Fluoride (mg/L)0.68 NA 1.33 NA NA 1.13 NA NA 0.827 NA Semi-Annually
MW-03A (Class III)Field pH (S.U.) 6.5 - 8.5
NS
NA
2/16/2016
7.08
NS
NA
NS
NA
4/27/2016
6.43
NS
NA
NS
NA
9/22/2016
6.79
NS
NA Semi-Annually
Sulfate (mg/L)3640 NA 3580 NA NA 3580 NA NA 3390 NA Semi-Annually
Selenium (ug/L)89 NA 91.5 NA NA 103 NA NA 75.7 NA Semi-Annually
MW-05 (Class II)Uranium (ug/L)7.5 NS NA 2/15/2016 1.15 NS NA NS NA 4/21/2016 0.869 NS NA NS NA 8/19/2016 0.688 NS NA Semi-Annually
MW-12 (Class HI)Selenium (ug/L)25 NS NA 2/4/2016 23.8 NS NA NS NA 4/21/2016 31.2 mc NA MO NA 8/19/2016 27.7 NS NA Semi-Annually
Field pH (S.U.) 6.5 - 8.5 NA 6.36 NA NA 6.31
INo
NA NA 6.84 NA .Semi-Annually
MW-15 (Class III)Selenium (ug/L)128.7 NS NA 2/4/2016 123 NS NA NS NA 4/27/2016 126 NS NA NS NA 8/18/2016 110 NS NA Semi-Annually
Field pH (S.U.)6.62 - 8.5 NA 6.30 NA NA 6.02 NA NA 6.71 NA Semi-Annually
Q12016 Results Q2 2016 Results Q312016
Monitoring Well
(Water Class)
Constituent Exceeding
GWCL
GWCL in
August 24,
2012 GWDP
January 2016
Monthly
Sample Date
January 2016
Monthly
Result
Q1 2016
Sample Date
Q1 2016
Result
March 2016
Monthly
Sample Date
March 2016
Monthly
Result
April 2016
Monthly
Sample Date
April 2016
Monthly
Result
Q2 2016
Sample Date
02 2016
Result
June 2016
Monthly
Sample Date
June 2016
Monthly
Result
July 2016
Monthly
Sample Date
July 2016
Monthly
Result
Q3 2016
Sample Date
Q3 2016
Result
September 2016
Monthly
Sample Date
September 2016
Monthly Result Sample Frequency
Required Semi-/\nnual Sampling Wells, contimled
Thallium (ug/1) 1.95 NA 2.67 NA NA 2.77 NA NA 2.58 NA Semi-Annually
MW-18 (Class HI)Sulfate (mg/L)1938.9 NA 1890 NA NA 1890 NA NA 1960 NA Semi-Annually
Field pH (S.U.)6.25-8.5 NS NA 2/9/2016 6.10 NS NA NS NA 4/19/2016 5.93 NS NA NS NA 8/23/2016 6.64 NS NA Semi-Annually
TDS (mg/I.) 3198.77 NA 3130 NA NA 3190 NA NA 3180 NA Semi-Annually
MW-19 (Class III)Field pH (S.U.)6.78-8.5
NS
NA
2/9/2016
6.76
NS
NA
NS
NA
4/19/2016
6.25
NS
NA
NS
NA
8/23/2016
7.07
NS
NA Semi-Annually
Nitrate + Nitrite (as N)
(mg/L)2.83 NA 2.44 NA NA 2.63 NA NA 2.62 NA Semi-Annually
Cadmium (ug/L)2.5 NA 6.31 NA NA 6.07 NA NA 3.97 NA Semi-Annually
Fluoride (mg/L) 0.36 NA 0.117 NA NA 0.446 NA NA 0.135 NA Semi-Annually
MW-24 (Class HI)Sulfate (mg/L)2903 NS NA 2/17/2016 2750 NS NA NS NA 4/28/2016 2760 NS NA NS NA 9/22/2016 2460 NS NA Semi-Annually
Thallium (ug/L)1 NA 2.04 NA NA 2.10 NA NA 1.57 NA Semi-Annually
Field pH (S.U.)6.5 - 8.5 NA 5.95 NA NA 4.83 NA NA 6.00 NA Semi-Annually
Nitrate + Nitrite (as N)
(mg/L)5.6 NA 6.50 NA NA 7.40 NA NA 6.46 NA Semi-Annually
Chloride (mg/L)38 NA 47.3 NA NA 43.1 NA NA 42.3 NA Semi-Annually
MW-27 (Class III)Sulfate (mg/I.)462 NA 439 MC NA MC NA Annnn i a
418 MC NA MC NA 383 MC NA Semi-Annually
Field pH (S.U.)6.5 - 8.5 INo NA 6.59 NA INa NA 4/aU/aUIO 6.54 INo NA IN!*NA 8/Z4/ZU10 7.36 IN8 NA Semi-Annually
TDS (mg/I.)1075 NA 1050 NA NA 1020 NA NA 960 NA Semi-Annually
Gross Alpha minus Rn & U
(pCi/L)2 NA <1.0 NA NA <1.0 NA NA <1.0 NA Semi-Annually
Chloride (mg/L)105 NA 130 NA NA 121 NA NA 127 NA Semi-Annually
Cadmium (ug/L)5.2 NA 5.26 NA NA 4.90 NA NA 5.14 NA Semi-Annually
MW-28 (Class HI)Uranium (ug/L) 4.9 NS NA 2/2/2016 4.61 NS NA NS NA 4/20/2016 3.95 NS NA NS NA 9/1/2016 4.71 NS NA Semi-Annually
Vanadium (ug/L)30 NA <15.0 NA NA <15.0 NA NA <15.0 NA Semi-Annually
Field pH (S.U.)6.1 -8.5 NA 5.46 NA NA 5.73 NA NA 6.56 NA Semi-Annually
TDS (mg/I.) 4400 NA 4410 NA NA 4100 NA NA 4410 NA Semi-Annually
MW-29 (Class HI)Sulfate (mg/L) 2946 NS NA 2/10/2016 2710 NS NA NS NA 4/27/2016 2730 NS NA NS NA 9/1/2016 2750 NS NA Semi-Annually
Field pH (S.U.) 6.46 - 8.5 NA 6.47 NA NA 6.03 NA NA 6.78 NA Semi-Annually
Gross Alpha minus Rn & U
(pCi/L)3.33 NA 2.17 NA NA 2.18 NA NA 2.56 NA Semi-Annually
MW-32 (Class HI)Chloride (mg/L)35.39 NS NA 2/3/2016 38.2 NS NA NS NA 4/20/2016 36.3 NS NA NS NA 8/17/2016 38.3 NS NA Semi-Annually
Field pH (S.U.)6.4 - 8.5 NA 5.99 NA NA 6.06 NA NA 6.29 NA Semi-Annually
Notes:
GWCL values are taken from August 24. 2012 version of GWDP.
NS = Not Required and Not Sampled
NR = Required and Not Reported
NA = Not Applicable
Exceedances are shown in yellow
Values in () parentheses are the field pH measurements for the resampled analyses.
HYDRO GEO CHEM, INC.
Environmental Science & Technology
November 4, 2016
Kathy Weinel
Quality Assurance Manager
Energy Fuels Resources (USA) Inc.
225 Union Boulevard, Suite 600
Lakewood, Colorado 80228
Dear Ms. Weinel:
This letter discusses the suitability of perched monitoring well MW-3A as a replacement for well
MW-3 and provides reasons that MW-3 is less suitable than MW-3A for monitoring. MW-3 was one
of the original perched monitoring wells installed at the site in 1979. MW-3A, located approximately
11 feet downgradient (south) of MW-3, was installed in 2005 as a potential replacement for MW-3.
Attached are a well construction diagram for MW-3 and a well construction diagram and lithologic
log for MW-3A. A lithologic log for MW-3 is not available.
The precise depth of the Brushy Basin Member contact at MW-3 is unknown. It has been assumed to
be 87 feet below land surface (ft bis) which is the base of the screened interval at MW-3. The depth
to the Brushy Basin Member contact at MW-3A is approximately 92.5 ft bis.
MW-3 is constructed without a filter pack and with 9 feet of capped blank casing below the bottom
of the screen. The blank section of casing has the potential to prevent complete purging of the well,
allowing water to stagnate at the base of the well casing, and to trap sediment brought into the casing
during purging and sampling activities. Potentially stagnating water and trapped sediment may
negatively impact the representativeness of water quality samples collected from the well. In
addition, because the casing joints of MW-3 are glued together, the representativeness of water
quality samples may be compromised by leaching of VOCs from the glued joints.
Conversely, MW-3A is equipped with a filter pack and with flush-thread casing joints (not glued), is
known to be screened throughout the entire saturated thickness of the perched zone at this location,
and has no blank casing beneath the screened interval. Based on construction characteristics alone,
MW-3A is more suitable for perched groundwater monitoring than MW-3. Furthermore, the close
proximity of MW-3A to MW-3 (approximately 11 feet downgradient [south] of MW-3) and the
more than sufficient background water quality data available for MW-3A, makes MW-3A suitable to
replace MW-3 for continued perched water monitoring at this location.
51 West Wetmore, Suite 101 Tucson, Arizona 85705-1678 520.293.1500 520.293.1550-Fax [phone]-Toll Free
Kathy Weinel
November 4, 2016
Page 2
Please let me know if you have any questions.
H:\718000\MW3\MW3_abandonment\MW3_abandonment.doc
WELL CONSTRUCTION AND LITHOLOGIC LOGS
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03
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GROUND
SURFACE
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VENTED CAP
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CUTTINGS
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CEMENT GROUT
BENTONITE SEAL
t----CEMENT BASKET
FIGURE 4
NOT TO SCALE
PIEZOMETER INSTALLATION
WELL NO. 3
CONSTRUCTION DETAILS
NOTE I -SCREEN CONSISTS OF COMMERCIALLY SLOTTED PIPE WITH 0.045 IN. WIDE SLOTS. 3 ROWS ANO 40-42/SLOTS/ ROW/FT. PIPE.
MEPABEO POK
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ENERGY FUELS NUCLEAR, INC.
DENVER,COLORADO
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NOT TO SCALE
HYDRO
^ CHEM, INC.
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AS-BUILT WELL COt
IW-3A
<STRUCTION SCHEMATIC
Approved Date
SS 8/06/15
Author bate [File Name [Figure
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