DRC-2018-001524 - 0901a068807b7aa1

Div of Waste Management
and Radiation Control
FEB 11 2018
rENERGYFUELS
wc-20\0rcmrt'
Energy Fuels Resources (USA) Inc.
225 Union Blvd. Suite 600
Lakewood, CO, US, 80228
303 974 2140
www.energyfuels.com
February 8, 2018
VIA PDF AND OVERNIGHT DELIVERY
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 fourth quarter (“Q4”) groundwater monitoring
during the period from October 1, to December 31, 2017 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 January 12, 2018.
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 LG. 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 Q4 2017 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.
Letter to Mr. Scott Anderson
February 8, 2018
Page 2
Letter to Mr. Scott Anderson
February 8, 2018
Page 3
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 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 Q4 2017. A 30-day plan and schedule
contemplated in Part I.G.l c) of the GWDP will be required for the consecutive exceedances of
fluoride in MW-14 as noted 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, and March 10, 2017.
MW-11
• Manganese concentrations exceeded the GWCL in MW-11 in all of the Q4 2017
sampling events. Manganese exceedances are 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
Letter to Mr. Scott Anderson
February 8, 2018
Page 4
• Fluoride concentrations exceeded the GWCL in MW-14 in the Q4 2017 and December
monthly sampling events. This is the first consecutive exceedance for fluoride in MW-
14. Therefore, a plan and schedule for assessment will be submitted under separate cover
within 30 days of this Exceedance Notice.
MW-26
• Nitrate + nitrite has exceeded its GWCL in all of the Q4 2017 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.
• Chloroform has exceeded its GWCL in all of the Q4 2017 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 the October
monthly and the Q4 2017 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 in the Q4 2017 and December
monthly 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 uranium concentration exceeded its GWCL in September and October monthly
sampling events. Uranium exceedances are 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 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-30
Letter to Mr. Scott Anderson
February 8, 2018
Page 5
• Nitrate + nitrite has exceeded its GWCL in all of the Q4 2017 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 Q4 2017 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 selenium concentration exceeded its GWCL in all of the Q4 2017 sampling events.
Selenium exceedances are 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 Q4 2017 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 Q4
2017. 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
February 8, 2018
Page 6
• The sulfate concentration exceeded its GWCL in all of the Q4 2017 sampling events.
Sulfate exceedances are addressed in the revised SAR, dated December 9, 2015 and
approved by DWMRC on February 9, 2016. The sulfate exceedances were addressed in
the December 9, 2015 SAR, but due to previously identified, naturally occurring,
statistically significant rising trends, has exceeded the recalculated GWCLs specified in
the December 2015 SAR. As a result, EFRI voluntarily submitted a Plan and Time
Schedule for DWMRC approval on March 10, 2017 to evaluate the GWCLs based on the
previously identified rising trend. DWMRC approved the Plan and Time Schedule on
May 23, 2017. A revised SAR was submitted on August 20, 2017 and therefore a plan to
address this consecutive exceedance is not necessary and is not being submitted.
• The selenium concentration exceeded its GWCL in all of the Q4 2017 sampling events.
Selenium exceedances are addressed in the revised SAR, dated December 9, 2015 and
approved by DWMRC on February 9, 2016. The selenium exceedances were addressed
in the December 9, 2015 SAR, but due to previously identified, naturally occurring,
statistically significant rising trends, has exceeded the recalculated GWCLs specified in
the December 2015 SAR. As a result, EFRI voluntarily submitted a Plan and Time
Schedule for DWMRC approval on March 10, 2017 to evaluate the GWCLs based on the
previously identified rising trend. DWMRC approved the Plan and Time Schedule on
May 23, 2017. A revised SAR was submitted on August 20, 2017 and therefore a plan to
address this consecutive exceedance is not necessary and is not being submitted.
• The Total Dissolved Solids (“TDS”) exceeded its GWCL in all of the Q4 2017 sampling
events. TDS exceedances are addressed in the revised SAR, dated December 9, 2015 and
approved by DWMRC on February 9, 2016. The TDS exceedances were addressed in the
December 9, 2015 SAR, but due to previously identified, naturally occurring, statistically
significant rising trends, has exceeded the recalculated GWCLs specified in the
December 2015 SAR. As a result, EFRI voluntarily submitted a Plan and Time Schedule
for DWMRC approval on March 10, 2017 to evaluate the GWCLs based on the
previously identified rising trend. DWMRC approved the Plan and Time Schedule on
May 23, 2017. A revised SAR was submitted on August 20, 2017 and therefore a plan to
address this consecutive exceedance is not necessary and is not being submitted.
• The uranium concentration exceeded the GWCL in MW-31 in all of the Q4 2017
sampling events. Uranium exceedances are addressed in Plan and Time Schedule which
was submitted to DWMRC on March 10, 2017. DWMRC approved the Plan and Time
Schedule on May 23, 2017. A revised SAR was submitted on August 20, 2017 and
therefore a plan to address this consecutive exceedance is not necessary and is not being
submitted.
MW-35
• The uranium concentration exceeded the GWCL in MW-35 in all of the Q4 2017
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-
Letter to Mr. Scott Anderson
February 8, 2018
Page 7
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 gross alpha concentrations exceeded the GWCL in MW-35 in all of the Q4 2017
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 Q4
One new exceedance for the Q4 2017 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.
• Fluoride in MW-25 was slightly above the GWCL in the Q4 2017 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
February 8, 2018
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 (Q3 2017 and Q4 2017).
MW-1
• Field pH has been slightly outside (slightly lower than) the GWCL for both the Q3 2017
sampling event and the Q4 2017 sampling event. Field pH exceedances are 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-3A
• Selenium has exceeded the GWCL for both the Q3 2017 sampling event and the Q4 2017
sampling event. Selenium exceedances are 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.
• Lield pH has been slightly outside (slightly lower than) the GWCL for both the Q3 2017
sampling event and the Q4 2017 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 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-12
• Selenium has exceeded the GWCL for both the Q3 2017 sampling event and the Q4 2017
sampling event. Selenium exceedances are 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
Letter to Mr. Scott Anderson
February 8, 2018
Page 9
next revision of the GWDP. As a result of DWMRRC’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-15
• Field pH has been slightly outside (slightly lower than) the GWCL for both the Q3 2017
sampling event and the Q4 2017 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 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-18
• Thallium has exceeded the GWCL for both the Q3 2017 sampling event and the Q4 2017
sampling event. Thallium exceedances are 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 Q3 2017 sampling event and the Q4
2017 sampling event. Cadmium exceedances are addressed in SARs, dated October 10,
2012 and June 24, 2016. As a result of the SARs, 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.
• Thallium has exceeded the GWCL for both the Q3 2017 sampling event and the Q4 2017
sampling event. Thallium exceedances are addressed in SARs, dated October 10, 2012
and June 24, 2016. As a result of the SARs, 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
Letter to Mr. Scott Anderson
February 8, 2018
Page 10
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.
• Field pH has been slightly outside (slightly lower than) the GWCL for both the Q3 2017
sampling event and the Q4 2017 sampling event. Field pH exceedances are addressed in
SARs, dated October 10, 2012 and June 24, 2016. As a result of the SARs, 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-27
• The nitrate+nitrite concentration exceeded its GWCL for both the Q3 2017 sampling
event and the Q4 2017 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.
MW-28
• Chloride has exceeded the GWCL for both the Q3 2017 sampling event and the Q4 2017
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.
MW-32
• Chloride has exceeded the GWCL for both the Q3 2017 sampling event and the Q4 2017
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-amiual Wells with New Exceedances Reported in Q4
One new single exceedance for the Q4 2017 semi-annual well sampling program is listed below.
• Beryllium in MW-24 was slightly above the GWCL in the Q4 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
February 8, 2018
Page 11
Yours truly,
ENERGY FUELS RESOURCES (USA) INC.
Kathy Weinel
Quality Assurance Manager
cc: David Frydenlund
Mark Chalmers
David Turk
Logan Shumway
Scott Bakken
Paul Goranson
Table 1 - GWCL Exceedances for Fourth Quarter 2017 under the August 24, 2012 GWDP
Monitoring Well
(Water Class)
Q1201
Constituent Exceeding GWCL
Results
GW'CL in August
24,2012 GWDP
Q! 2010
Sample Date Q1 2010 Result Q2 2010 Sample
Date
Q2 2010
Result
Q2 2010 Results
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
suits
August 2010
Monthly Result
Q3 2010
Sample l>ate
Q3 2010
Result
October 2010
Monthly Sample
Date
October
2010
Monthly
Result
Q4 2010
Sample Date
110 Results
Q42010
Result
December 2010
Monthly Sample
Date
December 2010
Monthly Result
Required <Quarterly Sanqjling Wells
MW-11 (Class II)
Manganese (ug/L)131.29
2/10/2010
>34
4/28/2010
137 5/24/2010 122 6/16/2010 99 7/20/2010 123 8/25/2010 138 Q/8/9010
128 10/20/2010 141 11/11/2010 133 12/15/2010 158
Sulfate (mg/L)1309 1140 1150 NS NA NS NA NS NA NS NA
7/ o/ z w l U
1140 NS NA 1180 NS NA
MW-14 (Class III)
Fluoride (mg/L) 0.2 0.15 0.16 NS NA NS NA NS NA NS NA 0.17 NS NA
11/10/2010
0.15 NS NA
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 7/20/2010 7.19 8/25/2010 6.48
9/8/2010
6.51 10/20/2010 6.60 6.37 12/15/2010 6.47
MW-25 (Class III)
Field pH (S.U.)6.5 - 8.5 6.53
4/28/2010
7.20
NS
NA
NS
NA
NS
NA
NS
NA 6.58
NS
NA
11/10/2010
6.36
NS
NA
Cadmium (ug/L)1.5 2/3/2010 1.26 1.44 NA NA NA NA 9/8/2010 1.4 NA 1.26 NA
Fluoride (mg/L) 0.42 0.31 0.33 NA NA NA NA 0.34 NA 0.31 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 1.3
4/22/2010
2
5/21/2010
0.3
6/16/2010
0.4
7/21/2010
0.6
8/16/2010
0.6 0.7
10/20/2010
0.4
11/15/2010
0.2
12/15/2010
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 800 940 900 2800 2100 1000 1900 1400
Chloride (mg/L)58.31 2/2/2010 72 57 80 47 52 49 9/26/2010 64 52 48 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 16.1
4/27/2010
15.8
5/21/2010
17
6/15/2010
15.3 7/21/2010 16 8/24/2010 16 15
10/19/2010
15
11/9/2010
15
12/14/2010
16
Chloride (mg/L)128 127 97 NA NA NS NA NS NA 111 NA 126 NA
Uranium (ug/L)8.32 2/9/2010 6.82 6.82 NA NA NS NA NS NA 9/14/2010 7.10 NA 6.64 NA
Field pH (S.U.)6.5 - 8.5 6.81 6.55 6.62 7.47 7/21/2010
7/27/2010 6.80 (6.82)8/24/2010 6.73
9/21/2010
6.80 (6.84)6.77 6.75 6.65
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
9/13/2010
(9/21/10)
10/19/2010 20
11/9/2010
20
12/14/2010
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 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 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 NA
NS
NA
NS
NA
NS
NA
NS
NA NA
NS
NA
11/30/2010
698 NA
Gross Alpha minus Rn & U
(pCi/L)3.75 NA
NS
NA NA NA NA NA NA NA 2.6 NA
Field pH (S.U.) 6.5 - 8.5
NS
NA NA NA NA NA NA
NS
NA NA 7.46
NS
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
Required Semi-Annual SannpHftg Wells
MW-01 (Class II)
Chloride (mg/L)22.1
NS
NA
5/5/2010
18
NS
NA
NS
NA
NS
NA NA NA
NS
NA
11/8/2010
15
NS
NA
Field pH (S.U.)6.77 - 8.5 NA 7.86(6.87) !NA NA NA NS NA NS NA NA 6.96 NA
Sulfate (mg/L)838 NA 805 NA NA NA NA NA NA 792 NA
MW-3A (Class III)Field pH (S.U.)6.5 - 8.5
NS
NA
5/4/2010
6.23 (6.24)
NS
NA
NS
NA
NS
NA
NS
NA
Q/o | /on | n
6.42
NS
NA
11/22/2010
6.21
NS
NA
Sulfate (mg/L)3640 NA 3680 NA NA NA NA
7/ Z 1/ ZU1 u 3630 NA 3850 NA
Selenium (ug/L) 89 NA 81.4 NA NA NA NA NS NA 94.8 NA
MW-05 (Class II)Field pH (S.U.)6.5 - 8.5 NS NA 4/26/2010 7.15 NS NA NS NA NS NA NS NA NS NA NS NA 11/11/2010 7.31 NS NAUranium (ug/L)7.5 NA 0.39 11.6
MW-12 (Class III)
Selenium (ug/L)25 NS NA
4/27/2010
25.7
NS
NA NA
NS
NA
NS
NA 31.9 NA
11/19/2010
27.6
NS
NA
Uranium (ug/L)23.5 NS NA 19.8 NA NS NA NA NA 9/20/2010 NA NS NA 18.0 NA
Field pH (S.U.)6.5 - 8.5 NS NA 7.16 NA NA NA NA 6.62 NA 6.47 NA
MW-15 (Class III)Selenium (ug/L)128.7 vro NA 4/21/2010 100 NS NA NS NA NS NA NS NA NTC NA NS NA 11/11/2010 99.5 NS NA
Field pH (S.U.)6.62 - 8.5 INo NA 6.98 NA NA NA NA
INo NA NA 6.57 NA
Q12010 Results Q2 2010 Results Q3 2010 Results Q4 2010 Results
Monitoring Well
(Water Class)Constituent Exceeding GWCL GWCL in Current
GWDP
Q1 Sample
Date Q! 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
Refjuired Semi-Annual Sampling Wells, continuiid
MW-18 (Class III)
Thallium (ug/1) 1.95 NA
5/4/2010
3.73
NS
NA NA
NS
NA
NS
NA
9/15/2010
3.64
NS
NA
11/18/2010
3.57
NS
NA
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 6.2 NA NS NA NA NA 7.23 NA 6.37 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 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
MW-23 (Class III)Field pH (S.U.)6.5 - 8.5 NS NA 4/22/2010 6.18 NS NA NS NA NS NA NS NA 9/14/2010 7.05 NS NA 11/22/2010 6.44 NS NA
MW-24 (Class III)
Cadmium (ug/L)2.5 NA
5/6/2010
4.28
NS
NA NA
NS
NA
NS
NA
9/21/2010
5.06
NS
NA
11/17/2010
3.22
NS
NA
Fluoride (mg/L)0.36 NA 0.14 NA NA NA NA NA NA 0.18 NA
Thallium (ug/L)1 NS NA 1.3 NA NS NA NA NA 1.57 NA 1.09 NA
Beryllium (ug/L)2 NA <0.5 NA NA NA NA NA NA <0.5 NA
Field pH (S.U.)6.5 - 8.5 NA 5.91(5.78)NA NA NA NA 6.64 NA 6.1 NA
MW-27 (Class III)Nitrate + Nitrite (as N) (mg/L)5.6 NA
5/3/2010
5.8
NS
NA NA
NS
NA
NS
NA
9/14/2010
5.9
NS
NA
11/12/2010
5.7
NS
NA
Chloride (mg/L)38 NS NA 42 NA NS NA NA NA 42 NA 45 NA
Field pH (S.U.)6.5 - 8.5 NA 6.78 NA NA NA NA 7.68 NA 6.84 NA
MW-28 (Class III)
Chloride (mg/L)105 NA
4/19/2010
108
NS
NA
NS
NA
NS
NA
NS
NA
9/14/2010
106
NS
NA
11/12/2010
107
NS
NA
Cadmium (ug/L)5.2 NS NA 4.20 NA NA NA NA NA NA 4.11 NA
Uranium (ug/L)4.9 NA 3.36 NA NA NA NA NA NA 3.45 NA
Field pH (S.U.)6.1 - 8.5 NA 5.67 NA NA NA NA 5.91 NA 5.72 NA
MW-29 (Class III)
TDS (mg/L)4400 NA
4/27/2010
4400
NS
NA NA
NS
NA
NS
NA
NS
NA
NS
NA
11/9/2010
4390
NS
NA
Sulfate (mg/L) 2946 NS NA 2770 NA NS NA NA NA NA NA 2690 NA
Field pH (S.U.)6.46 - 8.5 NA 6.82 NA NA NA NA NA NA 6.17 NA
Chloride (mg/L)35.39 NA 30 NA NA NA NA NA NA 35 NA
MW-32 (Class III)Sulfate (mg/L)2556.70 NS NA 4/20/2010 2390 NS NA NS NA NS NA NS NA 9/13/2010 NA NS NA 11/10/2010 2330 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
piin. = tvcquucu miu
Exceedances are shown in yellow
Values in () parentheses are the field pH measurements for the resampled analyses.
Table 1 - GWCL Exceedances for Fourth Quarter 2017 under the August 24, 2012 GWDP
,OX 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 W ells
MW-11 (Class II)
Manganese (ug/L)131.29 1/11/2011 121
2/2/2011
145 3/15/2011 68 148 5/10/2011 170 6/15/2011 121 7/6/2011 151
8/3/2011
118 9/7/2011 106
10/4/2011
112 11/9/2011 105 12/14/2011 100
Sulfate (mg/L)1309 NS NA 1190 NS NA 1140 NS NA NS NA NS NA 1090 NS NA 1140 NS NA NS NA
MW-14 (Class III)
Fluoride (mg/L)0.2 NS NA
2/7/2011
0.15 NS NA 0.15 NS NA NS NA NS NA
8/3/2011
0.15 NS NA
10/4/2011
0.16 NS NA NS NA
Field pH (S.U.)6.5 - 8.5 1/11/2011 6.37 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 6.40 6.23 (6.41)9/8/2011 6.50 6.71 (6.82)11/9/2011 6.63 12/12/2011 6.84
MW-25 (Class III)
Field pH (S.U.)6.5 - 8.5
1/11/2011
6.44
2/2/2011
6.66
3/15/2011
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)
9/7/2011
6.54 6.6
11/9/2011
6.51
12/12/2011
6.87
Cadmium (ug/L)1.5 NA 1.34 NA 4/4/2011 1.27 NA 6/20/2011 NA NA 8/30/2012 1.19 NA 10/4/2011 1.27 NA NA
Fluoride (mg/L)0.42 NA 0.31 NA 0.28 NA NA NA 8/3/2011 0.31 NA 0.32 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/L) 0.62
1/12/2011
0.2 0.25
3/15/2011
0.6 0.8 0.4 0.3
7/6/2011
0.9
8/3/2011
8/30/11
0.6
9/7/2011
2.4 0.9
11/9/2011
1.3
12/14/2011
2.3
Uranium (ug/L)41.8 32 69.3 31.8 60.2 57.4 18.5 57.1 19.0 56.1 58.9 55.6 57
Chloroform (ug/L)70 800 730 1200 390 1900 730 300 1000 1300 440 12(H) 14(H)
Chloride (mg/L)58.31 52 2/16/2011 59 64 4/1/2011 64 5/10/2011 54 6/20/2011 39 64 60 66 10/12/2011 61 55 62
Field 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/L) 2.5
1/10/2011
15
2/1/2011
16
3/14/2011
17 16 16
6/20/2011
17
7/5/2011
17
8/3/2011
14
9/7/2011
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 4/11/2011 6.49 5/10/2011 NA NA NA 8 NA 9.83 NA 12/12/2011 NA
Field pH (S.U.)6.5 - 8.5 6.65 6.96 7.10 6.83 6.70 5.66 6.65 6.61 6.80 6.96 (6.73) 6.83 7.14
Selenium (ug/L)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/L)5 19 21 22 21
5/10/2011
20 22
7/5/2011
22 20 21 21
11/8/2011
(11/29/12)
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 143 143 145 148 148 148 145 145 148
Selenium (ug/L)71 1/10/2011 NS 2/1/2011 64.6 3/14/2011 NA 4/1/2011 65.2 NS 6/20/2011 NS NS 8/2/2011 66.2 9/6/2011 NS 10/3/2011 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 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 248 NA 369 NA NA
7/20/11
348 267
9/7/11
270
10/3/11
271 283
12/14/11
247
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 4.2
Field pH (S.U.)6.5 - 8.5
NS
NA
2/15/2011
7.17
NS
NA
6/7/2011
7.31
NS
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
Required Semi-Annual Sampling Wells
Chloride (mg/L)22.1 NA NA NA 18 NA NA NA NA NA 17 NA NA
MW-01 (Class II)Field pH (S.U.)6.77 - 8.5 NS NA NS NA NS NA 4/11/2011 7.06 (7.67)NS NA NS NA NS NA NS NA NS NA 10/11/2011 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-03A (Class III)
Field pH (S.U.)6.5 - 8.5
MO
NA 6.05
NS
NA
4/13/2011
6.58
NS
NA
NS
NA
NS
NA
8/11/2011
6.19
NS
NA
10/11/2011
6.5 (6.92)
NS
NA
NS
NA
Sulfate (mg/L)3640
INo
NA JJ lO/ZU L l 3730 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)Field pH (S.U.)6.5 - 8.5 NS NA 2/14/2011 7.31 NS NA 4/12/2011 7.79 NS NA NS NA NS NA 8/9/2011 7.22 NS NA 10/10/2011 7.41 NS NA NS NA
Uranium (ug/L)7.5 29.5 7.16 0.5 4.52
Selenium (ug/L)25 NA 39.0 NA 21.7 NA NA NA 25.4 NA 35.4 NA NA
MW-12 (Class III)Uranium (ug/L)23.5 NS NA 2/15/2011 NA NS NA 4/5/2011 20 NS NA NS NA NS NA 8/9/2011 NA NS NA 10/6/2011 20.5 NS NA NS NA
Field pH (S.U.)6.5 - 8.5 NA 6.43 NA 6.67 NA NA NA 6.13 NA 6.7 (6.97)NA NA
MW-15 (Class III)Selenium (ug/L)128.7 xro NA vrc NA NA /i/i o/ini i 116 NS NA KfC NA MC NA MC NA MC NA 10/10/2011 112 MC NA MC NA
Field pH (S.U.)6.62 - 8.5 NS NA NS NA NS NA
4/lz/ZUl 1 6.88 NA
INO NA INO NA INO NA INO NA 6.70 INO NA INO 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
04 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
MW-18 (Class III)
Thallium (ug/1)1.95 NA
2/15/2011
3.49 NA
4/6/2011
3.74
NS
NA
NS
NA
NS
NA
8/10/2011
9/21/11
4.0 3.39
NS
NA 3.83
NS
NA NA
Sulfate (mg/L)1938.9 NA 1770 NA 1780 NA NA NA 1910 NA
10/11/2011
2020 NA NA
Field pH (S.U.) 6.25-8.5
NS NA 6.27
NS NA 6.71 NA NA NA 5.95 (6.30)NA 6.55 (6.63)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/L)2.83 NA NS NA 2.6 NA NA NA NS NA 4.0 NA NA
MW-23 (Class III)Field pH (S.U.)6.5 - 8.5 NS NA 2/9/2011 6.13 NS NA 4/5/2011 7.14 NS NA NS NA NS NA 8/4/2011 6.38 NS NA 10/6/2011 6.56 (6.77)NS NA NS NA
MW-24 (Class III)
Cadmium (ug/L)2.5 NA
2/10/2011
2.78 NA
4/5/2011
2.61
NS
NA
NS
NA
NS
NA
8/4/2011
1.46 NA 1.78
NS
NA
NS
NA
Fluoride (mg/L)0.36 NA NA NA 0.19 NA NA NA NA NA 0.36 NA NA
Thallium (ug/L)1 NS NA 1.42 NS NA 1.07 NA NA NA <0.50 NS NA 10/11/2011 0.62 NA NA
Beryllium (ug/L)2 NA NA NA <0.5 NA NA NA NA NA <0.5 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
MW-27 (Class III)Nitrate + Nitrite (as N) (mg/L)5.6
NS
NA
2/9/2011
6 NA
4/5/2011
6.4
NS
NA
NS
NA
NS
NA
8/8/2011
6
NS
NA
10/5/2011
6.3
NS
NA
NS
NA
Chloride (mg/L)38 NA 46 NS NA 43 NA NA NA 43 NA 44 NA NA
Field pH (S.U.) 6.5 - 8.5 NA 6.71 NA 6.79 NA NA NA 6.39 NA 7.17 NA NA
MW-28 (Class III)
Chloride (mg/L)105 NA
2/14/2011
114 NA
4/11/2011
109
NS
NA
NS
NA
NS
NA
8/8/2011
105
NS
NA
10/5/2011
143
NS
NA
NS
NA
Cadmium (ug/L)5.2 NS NA NA NS NA 4.13 NA NA NA NA NA 3.99 NA NA
Uranium (ug/L)4.9 NA NA NA 3.29 NA NA NA NA NA 3.19 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
MW-29 (Class III)
TDS (mg/L)4400 NA
NS
NA
NS
NA
4/18/2011
4080
NS
NA
NS
NA
NS
NA
8/9/2011
NA NA
10/5/2011
4280
NS
NA
NS
NA
Sulfate (mg/L)2946 NS NA NA NA 2600 NA NA NA NA NS NA 2850 NA NA
Field pH (S.U.)6.46 - 8.5 NA NA NA 6.45 NA NA NA 6.20 NA 6.52 NA NA
Chloride (mg/L)35.39 NA NA NA 33 NA NA NA NA NA 34 NA NA
MW-32 (Class III)Sulfate (mg/L)2556.70 NS NA 2/9/2011 NA NS NA 4/1/2011 2180 NS NA NS NA NS NA 8/2/2011 NA NS NA 10/3/2011 2370 NS NA NS NA
Field pH (S.U.) 6.4 - 8.5 NA 5.99 NA 6.14 NA NA NA
8/30/11
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
1>I\ = xvcquucu dllU INUl
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 Fourth Quarter 2017 under the August 24, 2012 GWDP
Q1 2012 Results Q2 2012 Results QB 2012 Results ________212012 Results
Monitoring Well
(Water Class) 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
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 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
Sulfate (mg/L)1309 NS NA 1160 NS NA NS NA 1090 NS NA 1080 NS NA NS NA NS NA 1110 NS NA
MW-14 (Class III)
Fluoride (mg/L)0.2 NS NA
2/21/2012
0.15 NS NA NS NA
5/9/2012
0.15 NS NA
7/11/2012
0.15 NS NA NS NA NS NA
11/27/2012
0.158 NS NA
Field pH (S.U.)6.5 - 8.5 1/24/2012 6.36 6.57 3/14/2012 6.51 4/12/2012 6.97 6.73 6/19/2012 6.90 6.89 8/7/2012 6.58 9/18/2012 7.08 10/23/2012 6.83 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
5/2/2012
6.73 6.99
7/10/2012
6.88
8/6/2012
6.55 6.54 6.54
11/12/2012
6.47 6.62
Cadmium (ug/L)1.5 NA 1.31 NA NA 1.33 6/18/2012 NA 1.24 NA 9/18/2012 NA 10/22/2012 NA 1.56 12/24/2012 NA
Fluoride (mg/L)0.42 NA 0.34 NA NA 0.32 NA 0.3 NA NA NA 0.298 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 3.4
5/7/2012
6/26/2012
2.9 2.3 7/11/2012 1.9 1.6 1.8 3.5
11/15/2012
0.55 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 19(H)2/15/2012 33(H)29(H)29(H)17(H)24(H)8/16/2012 970
8/8/2012
22(H) 23(H)4720 4020 1250
Chloride (mg/L)58.31 68 40 74 4/11/2012 82 74 6/19/2012 85 7/11/2012 78 78
9/19/2012 67 10/24/2012 2.62 52.9 12/24/2012 65.9
Field pH (S.U.)6.74 - 8.5 6.59
mj/zuu
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
5/2/2012
16 15
7/10/2012
17 18 16 16.2
11/13/2012
18.5 17.2
Chloride (mg/L)128 124 126 128 128 124
6/18/2012
131 128
8/7/2012
139
9/19/2012
130 135 114 122
Uranium (ug/L)8.32 NS NA 1A2 8.38 7.84 6.81 7.8 7.64 8.04 7.67 10/23/2012 7.86 7.03 12/26/2012 5.80
Field pH (S.U.)6.5 - 8.5 1/24/2012 6.52 7.12 6.86 7.05 6.95 7.10 7.25 6.95 7.85 6.80 6.67 6.95
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
5/2/2012
20
6/18/2012
6/29/2012
21.6
7/9/2012
21 21 21 18
11/6/2012
23.6 22.2
TDS (mg/L)1320 1360 1240 14(H)1380 1410 1460 1400 1400 1460 1320 1230 1270
Chloride (mg/L)143 155 ISO 152 160 151 138 161
8/6/2012
175
9/18/2012
172 157 189 170
Selenium (ug/L)71 NS 67.8 NS NS 70.2 NA 74 NA NA 10/22/2012 NA 76.9 12/18/2012 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
5/2/2012
258
6/19/2012
304
7/10/2012
272 273
9/19/2012
283 253
11/13/2012
241 240
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 6.61 6.90 6.87
8/8/2012
6.74 6.81
10/23/2012
6.43 6.50
12/18/2012
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 Scmi-Annual Sampling W’ells
MW-01 (CLASS II)
Chloride (mg/L)22.1
NS
NA
NS
NA
NS
NA
NS
NA
5/1/2012
18 NA
NS
NA
NS
NA
NS
NA NA
11/27/2012
18.5 NA
Field pH (S.U.)6.77 - 8.5 NA NA NA NA 7.19 NS NA NA NA NA NS NA 6.98 NS NA
Sulfate (mg/L)838 NA NA NA NA 659 NA NA NA NA NA 846 NA
MW-03A (Class III)Field pH (S.U.)6.5 - 8.5
NS
NA
3/1/2012
6.46
NS
NA
NS
NA
5/15/2012
6.68
NS
NA
7/19/2012
7.01
NS
NA
NS
NA
NS
NA
11/29/2012
6.35
NS
NA
Sulfate (mg/L)3640 NA 3020 NA NA 3220 NA 37(H)NA NA NA 2780 NA
Selenium (ug/L)89 NA 65.8 NA NA 85.1 NA 99.3 NA NA NA 111 NA
MW-05 (Class II)Field pH (S.U.)6.5 - 8.5 NS NA 2/28/2012 7.57 NS NA NS NA 5/9/2012 7.38 NS NA 7/16/2012 7.60 NS NA NS NA NS NA 11/27/2012 7.32 NS NA
Uranium (ug/L)7.5 18.6 1.23 0.75 0.402
MW-12 (Class III)
Selenium (ug/L)25
NS
NA
2/29/2012
NA
NS
NA
NS
NA
5/10/2012
19.6
NS
NA
7/17/2012
20.7
NS
NA NA NA
11/27/2012
23.0 NA
Uranium (ug/L)23.5 NA NA NA NA 19.6 NA NA NA NS NA NS NA 21.5 NS NA
Field pH (S.U.)6.5 - 8.5 NA 6.81 NA NA 6.91 NA 6.98 NA NA NA 6.54 NA
MW-15 (Class III)Selenium (ug/L)128.7 NS NA 2/22/2012 NA NS NA NS NA 5/9/2012 152 NS NA 7/17/2012 120 MC NA NS NA MC NA 11/14/2012 117 NA
Field pH (S.U.)6.62 - 8.5 NA 6.84 NA NA 6.63 NA 7.05 no NA NA NA 6.86 iNO NA
Q1 2012 esults Q2 2012 Results Q3 2012 Results Q4 2012 Results
Monitoring Well
(Water Class)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
NIC
NA
Nitrate + Nitrite (as N)
(mg/L)2.83 NA 3.9 NA NA 3.7 NA 4 NA NA NA 3.96
INo
NA
MW-23 (Class III)Field pH (S.U.)6.5 - 8.5 NS NA 2/20/2012 6.61 NS NA NS NA 5/16/2012 6.74 NS NA 7/17/2012 7.10 NS NA NS NA NS NA 12/5/2012 6.61 NS NA
Cadmium (ug/L)2.5 NA 2.25 NA NA 2.01 NA 4.7 NA NA NA 1.35 NA
Huoride (mg/L)0.36 NA NA NA NA 0.14 NA NA NA NA NA 0.558 NA
MW-24 (Class III)Thallium (ug/L)1 NS NA 2/23/2012 0.96 NS NA NS NA 5/10/2012 0.74 NA 7/18/2012 1.36 NS NA NS NA NS NA 11/29/2012 0.666 KTC NA
Beryllium (ug/L)2 NA NA NA NA <0.5 NA NA NA NA NA <0.5 [No
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
MW-27 (Class III)
Nitrate + Nitrite (as N)
(mg/L)5.6
NS
NA
2/28/2012
6.4
NS
NA
NS
NA
5/1/2012
6.2
NS
NA
7/16/2012
6.7
NS
NA NA NA 6.9 NA
Chloride (mg/L)38 NA 45 NA NA 46 NA 47 NA NS NA NS NA 11/13/2012 44.2 NS NA
Field pH (S.U.)6.5 - 8.5 NA 7.24 NA NA 7.03 NA 7.40 NA NA NA 6.69 NA
Chloride (mg/L)105 NA 109 NA NA 114 NA 7/16/2012
8/1/2012 105 NA NA NA 115 NA
MW-28 (Class III)Cadmium (ug/L)5.2 NS NA NA vrc NA NS NA 5/8/2012 3.85 NS NA NS NA NS NA NS NA NS NA 4.37 NA
Uranium (ug/L)4.9 NA Z/Zo/ZUlZ NA INo NA NA 3.44 NA NS NA NA NA NA 11/14/2012 3.45 NS 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/L)4400 NA NA NA NA 4600 NA 8/1/2012 4420 NA NA NA 4430 NA
MW-29 (Class III)Sulfate (mg/L)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 \ \ H A l'>r\ 1 T 1340 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
11/14/ZUiZ
6.48
NS
NA
Chloride (mg/L)35.39 NA NA NA NA 33 NA 1.4 NA NA NA 32.1 NA
MW-32 (Class III)Sulfate (mg/L)2556.70 NS NA 2/21/2012 NA NS NA NS NA 4/30/2012 2130 NS NA 7/9/2012 NA NS NA NS NA NS NA 11/6/2012 1710 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
ININ. - ivcquucu Clliu l^Ul
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 Fourth Quarter 2017 under the August 24, 2012 GWDP
Q1 2013 Results Q2 2013 Results Q3 2013 Results Q4 2013 Results
Monitoring Well
(Water Class)
Constituent Exceeding
GWCL
GWCL in August
24, 2012 GWDP
January 2013
Monthly
Sample Date
Januan
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 Quarter)y Sampling Wells
Manganese (ug/L)131.29 1/23/2013 115 139 3/20/2013 164 4/16/2013 181 144 6/25/2013 135 7/10/9013 138 8/20/2013 158 9/18/2013 134 10/22/2013 129
11/1 Q/OOI 1
152 12/18/2013 196
Sulfate (mg/L)1309 NS NA 1080 NS NA NS NA 763 NS NA / /1U/ ZU l J 1240 NS NA NS NA NS NA 1050 NS NA
Fluoride (mg/L)0.2 NS NA 0.172 NS NA NS NA 0.169 NS NA 0.191 NS NA NS NA NS NA 0.148 NS NA
MW-14 (Class III)
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)Cadmium (ug/L)1.5 1/22/2013 NA 2/20/2013 1.35 3/19/2013 1.40 4/17/2013 1.36 5/14/2013 1.52 6/24/2013 1.31 7/10/2013 1.41 8/19/2013 1.57 9/17/2013 1.31 10/22/2013 1.50 11/19/2013 1.35 12/17/2013 1.23
Fluoride (mg/L) 0.42 NA 0.32 NA NA 0.392 NA 0.534 NA NA NA 0.329 0.296
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 O/J/ZUIJ
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 1/23/2013 8.36 2/26/2013 1A 3/20/2013 6.85 4/17/2013 7.08 5/15/2013 6.31 6/25/2013 8.22 7/10/2013 7.48 8/20/2013 7.07 9/18/2013 7.00 10/22/2013 6.91 11/20/2013 8.57 12/18/2013 NA
Field pH (S.U.)6.5 - 8.5 6.88 6.93 6.91 7.42 7.54 6.93 6.87 7.06 6.78 6.96 6.84 7.10
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 ism 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/L)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
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-Annual 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
MW-03A (Class III)Field pH (S.U.)6.5 - 8.5
NS
NA
3/13/2013
6.84
NS
NA
NS
NA
5/23/2013
7.10
NS
NA
7/19/2013
6.50
NS
NA
NS
NA
NS
NA
12/11/2013
6.98
NS
NA
Sulfate (mg/L) 3640 NA 3480 NA NA 3120 NA 3670 NA NA NA 3360 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)Field pH (S.U.) 6.5 - 8.5 Njc NA 3/11/2013
7.39 NS NA NS NA 5/14/2013 8.01 NS NA 7/18/2013 7.39 NS NA NS NA NS NA 19/4/9013 7.58 NS NAUranium (ug/L)7.5 36 1.33 0.574 1 Z/‘+/ZU 1 j 20.1
Selenium (ug/L)25 NA 19.6 NA NA 19 NA 20.5 NA NA NA 21.7 NA
MW-12 (Class III)Uranium (ug/L)23.5 NS NA 3/6/2013 NA NS NA NS NA 5/15/2013 18.6 NS NA 7/17/2013 NA NS NA NS NA NS NA 12/9/2013 23.3 NS NA
Field pH (S.U.)6.5 - 8.5 NA 6.56 NA NA 7.19 NA 6.60 NA NA NA 6.69 NA
MW-15 (Class III)Selenium (ug/L)128.7 MC NA 3/5/2013 137 MC NA NS NA 5/15/2013 120 NS NA 7/18/2013 100 MC NA NS NA NS NA i i /on/on 11 106 MC NA
Field pH (S.U.)6.62 - 8.5 iNo NA 6.75
[No NA NA 7.27 NA 6.68 INo NA NA NA 11/ZU/zUU
6.61 [N5 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
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 Semi-Annual Sampling Wells, continued
MW-18 (Class III)
Thallium (ug/l)1.95 NA 3.26
NS
NA
NS
NA
5/20/2013
2.81
NS
NA 3.32
NS
NA
NS
NA
NS
NA
12/3/2013
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 NS NA 2/25/2013 6.35 NA NA 6.97 NA 7/15/2013 6.45 NA NA NA 6.38 NA
TDS (mg/L)3198.77 NA 3350 NA NA 3160 NA 3170 NA NA NA 3240 NA
MW-19 (Class III)Field pH (S.U.)6.78-8.5 NA 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-23 (Class III)Field pH (S.U.)6.5 - 8.5 NS NA 3/11/2013 6.37 NS NA NS NA 5/23/2013 7.23 NS NA 7/18/2013 6.61 NS NA NS NA NS NA 12/18/2013 7.21 NS NA
MW-24 (Class III)
Cadmium (ug/L)2.5 NA 2.0
NS
NA
NS
NA
5/22/2013
1.32
NS
NA 6.72
NS
NA
NS
NA
NS
NA
12/12/2013
1.15
NS
NA
Fluoride (mg/L) 0.36
NS
NA 0.355 NA NA 0.211 NA 0.288 NA NA NA 0.310 NA
Thallium (ug/L)1 NA 3/13/2013 0.88 NA NA 0.618 NA 7/19/2013 1.64 NA NA NA 0.707 NA
Beryllium (ug/L)2 NA NA NA NA <0.5 NA NA NA NA NA <0.5 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 NA 7.94
NS
NA
NS
NA
5/21/2013
7.09
NS
NA
7/17/2013
6.97
NS
NA
NS
NA
NS
NA
12/4/2013
7.89
NS
NA
Chloride (mg/L)38 NS NA 2/25/2013 50.3 NA NA 44.3 NA 44.2 NA NA NA 45.0 NA
Field pH (S.U.)6.5 - 8.5 NA 7.03 NA NA 7.58 NA 7.00 NA NA NA 7.16 NA
MW-28 (Class III)
Chloride (mg/L)105 NA no
NS
NA
NS
NA
5/15/2013
102
NS
NA
7/17/2013
107
NS
NA
NS
NA
NS
NA
12/4/2013
109
NS
NA
Cadmium (ug/L)5.2 VTC NA NA NA NA 4.61 NA NA NA NA NA 4.74 NA
Uranium (ug/L)4.9 NA 3/5/ZU13 NA NA NA 3.58 NA NA NA NA NA 3.34 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 III)
TDS (mg/L)4400 NA 4500
NS
NA
NS
NA
5/23/2013
4340
NS
NA
7/17/2013
4270
NS
NA
NS
NA
NS
NA
11/20/2013
4370
NS
NA
Sulfate (mg/L) 2946 NS NA 3/6/2013 NA NA NA 2450 NA NA NA NA NA 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
Chloride (mg/L)35.39 NA NA NA NA 32.3 NA NA NA NA NA 33.7 NA
MW-32 (Class III)Sulfate (mg/L)2556.70 NS NA 2/19/2013 NA NS NA NS NA 5/13/2013 1800 NS NA 7/9/2013 NA NS NA NS NA NS NA 11/18/2013 2110 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
i n iv = tvequueu auu
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 Fourth Quarter 2017 under the August 24, 2012 GW DP
02 2014 Results Q4 2014 Results
Monitoring Well
(Water Class)
Constituent Exceeding
GWCL
GWCL in August
24, 2012 GW DP
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
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 2014
Sample Date Q4 2014 Result
December
2014 Monthly
Sample Date
December 2014
Monthly Result
Requinsd Quarleris sampling 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
o/enn i a
74 10/6/2014 157
11/17/2014
125 12/10/2014 186
Sulfate (mg/L)1309 NS NA 1150 904 NS NA NS NA 1140 NS NA NS NA 1030 NS NA 1140 NS NA
MW-14 (Class III)
Fluoride (mg/L)0.2 NS NA
2/24/2014
0.139 0.188 NS NA NS NA 0.154 NS NA NS NA 0.2 NS NA
11/12/2014
<0.1 NS NA
Field pH (S.U.) 6.5 - 8.5 1/8/2014 6.60 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 6.25 12/10/2014 6.40
MW-25 (Class HI)
Field pH (S.U.)6.5 - 8.5 6.37
2/13/2014
6.10 6.27
4/28/2014
7.18
5/13/2014
6.80 6.74
7/28/2014
6.36 7.17 6.50
10/6/2014
6.49
11/4/2014
6.31 6.36
Cadmium (ug/L)1.5 1/7/2014 1.39 1.29 3/10/2014 1.29 1.51 1.34 6/2/2014 1.24 1.30 8/18/2014 1.30 9/3/2014 1.30 1.41 1.57 12/9/2014 1.21
Huoride (mg/L)0.42 0.297 0.313 0.36 0.41 0.321 0.328 0.30 0.30 0.30 NA 0.237 NA
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
2/24/2014
2.12 1.30
4/30/2014
1.20
5/14/2014
1.64 1.42
7/29/2014
2.0 1.00
9/4/2014
1.10
10/7/2014
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 28(H)1310 1580
6/5/2014
1450 2330 22(H)1580 894 1520 2280
Chloride (mg/L)58.31 1/8/2014 69.7 70.4 3/12/2014 61.0 62.1 61.0 63.2 80.0 8/20/2014 59.0 68.0 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/L)2.5 20.3
2/25/2014
18.4
3/11/2014
21.3
4/23/2014
18.3
5/14/2014
17.9
6/3/2014
19.4
7/29/2014
15.6 13.8
9/9/2014
16.8
10/7/2014
11.0
11/10/2014
16.2
12/10/2014
17.1
Chloride (mg/L)128 131 135 144 154 128 128 140 139 136 136 154 138
Uranium (ug/L)8.32 1/8/2014 NA 6.83 7.84 6.84 9.82 7.35 7.40 8/20/2014 7.60 7.70 7.76 7.65 7.67
Field pH (S.U.)6.5 - 8.5 6.74 6.80 6.56 7.06 6.88 6.89 6.76 7.51 6.82 6.92 6.22 6.77
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 HI)
Nitrate + Nitrite (as N)
(mg/L)5 24.0
2/17/2014
20.6 26.2
4/28/2014
19.1
5/13/2014
23.3 23.1
7/28/2014
19.0 15.2 18.9
10/6/2014
15.9
11/14/2014
20.9
12/9/2014
17.0
TDS (mg/L)1320 1510 146/)1490 1440 1510
6/2/2014
1520 14(H)1410 1460 1420 1520 1450
Chloride (mg/L)143 194 197 230 230 2(H)173 2(H)
8/18/2014
210
9/3/2014
210 205 204 215
Selenium (ug/L)71 1/7/2014 74.4 75.8 3/10/2014 77.2 85.4 74.5 69.4 77.9 82.8 81.5 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 6(H)620 560 606 639 687
MW-35 (Class II)
Manganese (ug/L)200 252
2/11/2014
247 204
4/25/2014
194
5/14/2014
249 202
7/29/2014
212 191 ill
10/6/2014
228
11/12/2014
222
12/9/2014
232
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
1/8/2014
6.54 6.07
3/11/14
6.32 6.79 7.10
6/4/2014
6.83 6.55
8/20/2014
7.07
9/3/2014
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 Sampling W«ills
MW-01 (Class II)
Chloride (mg/L)22.1 NA
NS
NA NA
NS
NA
NS
NA 20.4
NS
NA NA
9/10/2014
NA
NS
NA
11/17/2014
19
NS
NA
Field pH (S.U.)6.77 - 8.5 NS NA NA 2/20/2014 6.61 NA NA 5/28/2014 7.11 NA NS NA 6.75 NA 6.87 NA
Sulfate (mg/L)838 NA NA 836 NA NA 909 NA NA 810 NA 920 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 IXO NA I'lO NA 3100 NA NA 3830 NA NA
J! Ill I -r 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 II)Field pH (S.U.)6.5 - 8.5 NS NA NS NA 2/12/2014 6.87 NS NA NS NA 6/4/2014 7.58 NS NA NS NA 9/11/2014 7.13 NS NA 11/12/2014
6.92 NS NAUranium (ug/L)7.5 22.0 2.42 0.90 36.20
MW-12 (Class III)
Selenium (ug/L)25 NA
NS
NA 23.7
NS
NA
NS
NA
6/4/2014
17.20
NS
NA NA NA
NS
NA
11/11/2014
33.30
NS
NA
Uranium (ug/L)23.5 NS NA NA 2/12/2014 NA NA NA 20.20 NA NS NA 9/16/2014 NA NA 20.80 NA
Field pH (S.U.)6.5 - 8.5 NA NA 6.13 NA NA 7.10 NA NA 6.47 NA 6.25 NA
MW-15 (Class III)Selenium (ug/L)128.7 NA NS NA 110 NS NA NS NA 6/4/2014 105 NS NA NIC NA 9/2/2014 273 NS NA 11/1 'IMA 1 A 106 NA
Field pH (S.U.)6.62 - 8.5 [No NA NA 6.51 NA NA 6.91 NA [NO NA 6.38 NA 11/1Z/ZU14 6.41 NS NA
Q1 2014 Results Q2 2014 Resuits Q3 2014 Results 04 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
Q32014
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
Required Sent-Annual Sampling Wells, continued
MW-18 (Class IH)
Thallium (ug/1)1.95
NS
NA
NS
NA
2/19/2014
2.77
NS
NA NA 2.42
NS
NA
NS
NA
9/9/2014
2.7 NA
11/10/2014
2.88
NS
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 NA 6.40 NS NA 6.10 NA
TDS (mg/L)3198.77 NA NA 3080 NA NA 3260 NA NA 3180 NA 2960 NA
MW-19 (Class III)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
A'lO
NA 2.91 NA
MW-23 (Class HI)Field pH (S.U.)6.5 - 8.5 NS NA NS NA 3/5/2014 6.52 NS NA NS NA 6/11/2014 6.67 NS NA NS NA 9/4/2014 6.56 NS NA 11/19/2014 6.69 NS NA
MW-24 (Class III)
Cadmium (ug/L)2.5
NS
NA NA
3/6/2014
5.92
NS
NA NA 2.91 NA NA
9/17/2014
1.5 NA 1.17 NA
Fluoride (mg/L)0.36 NA
NS
NA 0.234 NA NA 0.337
NS
NA NA 0.4 NA 0.109 NA
Thallium (ug/L)l NA NA 1.85 NA NS NA 5/30/2014 1.23 NA NS NA 0.6 NS NA 11/19/2014 0.821 NS NA
Beryllium (ug/L)2 NA NA NA NA NA <0.5 NA NA NA NA <0.5 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
NS
NA
NS
NA
2/25/2014
7.98 NA
NS
NA
5/28/2014
7.35
NS
NA
NS
NA
9/8/2014
6.30 NA
11/5/2014
7.70
NS
NA
Chloride (mg/L)38 NA NA 47.0 NS NA NA 45.9 NA NA 46.0 NS NA 42.6 NA
Field pH (S.U.)6.5 - 8.5 NA NA 6.62 NA NA 7.80 NA NA 6.97 NA 6.70 NA
MW-28 (Class III)
Chloride (mg/L)105
NS
NA
NS
NA
2/26/2014
113 NA NA 114 NA
NS
NA
9/16/2014
112 NA
11/5/2014
117
NS
NA
Cadmium (ug/L)5.2 NA NA NA NS NA NA £ / 1 O /O A 1 A 5.41 NS NA NA 4.7 NS NA 4.15 NA
Uranium (ug/L)4.9 NA NA NA NA
NS NA 6/18/2014 61.3 NA NA 10.6 NA 21.2 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
NS
NA
NS
NA
2/25/2014
4500 NA NA 4200 NA
NS
NA
9/10/2014
4280 NA
11/10/2014
4210
NS
NA
Sulfate (mg/L)2946 NA NA NA NS NA NS NA 6/3/2014 2510 NS NA NA NA NS 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)
Chloride (mg/L)35.39
NS
NA
NS
NA
2/11/2014
NA NA NA 35.6
NS
NA
NS
NA 8/26/2014
NS
NA
11/5/2014
33.3 NA
Sulfate (mg/L)2556.70 NA NA NA NS NA NS NA 5/23/2014 1990 NA NA NS NA NA 2210 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 - GVVCL Exceedances for Fourth Quarter 2017 under the August 24, 2012 GWDP
02 2015 ResultsQ1 2015 Results
Monitoring Well
(Water Class)
Constituent Exceeding
GVVCL
GVVCL 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 Q2 2015
Sample Date 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 &
Date
Q3 2015 Results Q4 2015 Results
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
Req rired 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 2J7
11/11/2015
126 12/8/2015 139
Sulfate (mg/L)1309 NS NA 1110 NS NA 1170 NS NA NS NA NS NA 1050 NS NA NS NA 1220 NS NA
MW-14 (Class III)
Fluoride (mg/L)0.2 NS NA
2/3/2015
<0.1 NS NA <0.1 NS NA NS NA NS NA
8/11/2015
<0.1 NS NA NS NA
11/3/2015
<0.1 NS NA
Field pH (S.U.)6.5 - 8.5 1/21/2015 6.49 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 6.37 9/16/2015 6.51 10/8/2015 6.45 6.52 12/8/2015 6.45
MW-25 (Class III)
Field pH (S.U.)p°6.19
2/4/2015
6.46
3/4/2015
6.32 6.52
5/11/2015
6.46 6/1/2015
6/23/2015 6.59. 6.53 6.70 6.47
9/15/2015
6.58
10/6/2015
6.45
11/11/2015
6.79
12/8/2015
6.41
Cadmium (ug/L)1.5 1/20/2015 1.44 1.33 1.37 4/7/2015 1.27 1.38
6/23/2015
1.42 7/6/2015 1.43 8/10/2015 1.41 1.31 1.5 1.38 1.45
Fluoride (mg/L)0.42 NA 0.282 NA 0.288 NA NA NA 0.191 NA NA 0.297 NA
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 III)
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 1.15 1.75
9/16/2015
0.795
10/7/2015
2.36
11/11/2015
1.11
12/8/2015
1.200
Uranium (ug/L)41.8 2.96 78.1 72.6
4/9/2015
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/1 c\nr\ | s 1240 2150 2400 2660 3140
Chloride (mg/L)58.31 59.9 77.2 67.2 61.0 61.4 60.8 7/7/2015 67.4 o/ 1VW ZU 1D
8/17/2015 88.3 74.5 74.4 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 19.5
2/4/2015
14.9
3/3/2015
17.3 17
5/12/2015
16.1
6/24/2015
15.8
7/7/2015
15.3
8/11/2015
17.9 17.3
10/7/2015
19.1
11/11/2015
16.3
12/9/2015
18.2
Chloride (mg/L)128 144 136 132 142 145 142 145 165
9/15/2015
165 137 140 144
Uranium (ug/L)8.32 1/21/2015 8.06 8.23 8.35 4/8/2015 7.45 8.38 7.46 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 6.73 6.65 6.88 6.83 6.79
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 19.0
5/11/2015
18.4
6/23/2015
18.0
7/6/2015
18.8 19.9
9/15/2015
18.9
10/6/2015
22.0
11/9/2015
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
4/7/2015
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 79.0 78.6 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
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)532 669 623 616 642 668 691 684 640 638 655 646 690
MW-35 (Class II)
Manganese (ug/L)200 22S 223
3/4/2015
190 237
5/12/2015
207.0 6/23/2015 214
7/7/2015
185 198
Q/l S/l S Q/DD/I S
201, 176
10/6/2015
169
11/3/2015
210
12/14/2015
177
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
1/20/2015
6.22
2/5/2015
6.53 6.26
4/9/2015
6.64 6.46 6/2/2015
6/23/2015 6.50, 6.41 6.56
8/10/2015
6.40
y/xj/id y/zz/ id
9/28/15 6.52, 6.41, 6.49 6.29 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
MW-01 (Class II)
Chloride (mg/L)22.1 NA NA NA 23.9
NS
NA
NS
NA
NS
NA NA NA
NS
NA
11/11/2015
21.9
NS
NA
Field pH (S.U.)6.77 - 8.5 NS NA 2/10/2015 6.66 NS NA 4/15/2015 7.15 NA NA NA 7/27/2015 7.12 NS NA NA 6.83 NA
Sulfate (mg/L)838 NA 813 NA 892 NA NA NA 876 NA NA 830 NA
MW-03A (Class III)
Field pH (S.U.)6.5 - 8.5
NS
NA
"in')nrii c
6.15
vrc
NA 4/23/2015
4/29/2015 6.59, 6.24
NS
NA
NS
NA
NS
NA
7/29/2015
6.34
NS
NA
NS
NA
11/4/2015
6.63
NS
NA
Sulfate (mg/L)3640 NA Z/ IZ/ZUI j 3450 INo NA aninn i«3720 NA NA NA 3860 NA NA 3380 NA
Selenium (ug/L)89 NA 94.1 NA
4/Z3/ZU1 j
101 NA NA NA 85.9 NA NA 91.7 NA
MW-05 (Class II)Field pH (S.U.)6.5 - 8.5 vrc NA 2/10/2015 6.99 NS NA 4/21/2015 1 NS NA NS NA NS NA 7/21/2015 6.97 NS NA NS NA 11/4/2015 7.43 NS NA
Uranium (ug/L)7.5 INo 2.94 rNo 1.3 0.887 2.35
MW-12 (Class III)
Selenium (ug/L)25 NA 30.0 NA 4/21/2015 29.4
NS
NA
NS
NA
NS
NA 24.6
NS
NA
NS
NA
11/17/2015
24.7
NS
NA
Uranium (ug/L)23.5 NS NA NA NS NA 4/21/2015 21.6 NA NA NA 7/21/2015 NA NA NA 23 NA
Field pH (S.U.)6.5 - 8.5 NA 6.33 NA 4/21/2015 6.50. 6.70 NA NA NA 6.70 NA NA 6.65 NA
MW-15 (Class III)Selenium (ug/L)128.7 NA ^/a nn i c 125 NIC NA At i a/on 1S 137 NS NA NS NA NA 7/22/2015 104 NS NA NS NA 11/16/2015 107 NS NA
Field pH (S.U.)6.62 - 8.5 NS NA Z/4/ZU15 6.50 INo NA 4/13/ZU ID 6.82 NA NA I'lo NA 6.61 NA NA 6.81 NA
Q1 2015 Results Q2 2015 Results 03 2015 Results 04 2015 Results
Monitoring Well
(Water Class)
Coastituent Exceeding
GWCL
GWCL in
Augast 24.
2012 GWDP
January 2015
Monthly
Sample Date
January 2015
Monthly
Result
QI 2015
Sample Date
Ql 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 S<smi-Annual Sanipling Wells, continued
MW-18 (Class III)
Thallium (ug/1)1.95
NS
NA 2.89 NA
4/15/2015
2.81
NS
NA NA NA
7/27/2015
2.69
NS
NA
NS
NA
11/9/2015
2.68
NS
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 NA 2/3/2015 6.27 NS NA 6.40 NA
NS NA NS NA 6.43 NA NA 6.30 NA
TDS (mg/L)3198.77 NA 3240 NA 3350 NA NA NA 3190 NA NA 3000 NA
MW-19 (Class III)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-23 (Class III)Field pH (S.U.)6.5 - 8.5 NS NA 2/10/2015 6.53 NS NA 4/30/2015 6.80 NS NA NS NA NS NA 7/22/2015 6.53 NS NA NS NA 11/18/2015 6.77 NS NA
MW-24 (Class III)
Cadmium (ug/L)2.5 NA 3.31
NS
NA 1.79
NS
NA NA NA
7/29/2015
1.88
NS
NA
NS
NA
11/18/2015
3.75
NS
NA
Fluoride (mg/L)0.36 NA
2/12/2015
0.397 NA 0.293 NA
NS
NA NA 0.388 NA NA 0.372 NA
Thallium (ug/L)I NS NA 1.27 NA 0.796 NA NA NS NA 0.85 NA NA 1.37 NA
Beryllium (ug/L)2 NA NA NA NA NA NA NA <0.5 NA NA <0.5 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
NS
NA
2/9/2015
3.15
NS
NA
4/20/2015
6.27
NS
NA
NS
NA NA
7/21/2015
7.35
NS
NA
NS
NA
11/10/2015
5.60
NS
NA
Chloride (mg/L)38 NA 44.2 NA 47.6 NA NA
NS NA 43.7 NA NA 42.9 NA
Field pH (S.U.)6.5 - 8.5 NA 6.82 NA 7.09 NA NA NA 6.84 NA NA 6.48 NA
MW-28 (Class III)
Chloride (mg/L)105
NS
NA
2/9/2015
130 NA
4/21/2015
125
VTC
NA
NS
NA NA
7/21/2015
113
NS
NA
NS
NA
11/10/2015
116
NS
NA
Cadmium (ug/L)5.2 NA 4.83 NA 4.59 NA NA NS NA 4.97 NA NA 4.73 NA
Uranium (ug/L) 4.9 NA 4.48
NS NA 6.13 Mb NA NA NA 4.87 NA NA 4.84 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
NS
NA
2/10/2015
4430 NA
4/30/2015
4190 NA
NS
NA NA
7/22/2015
4310
NS
NA
NS
NA
11/16/2015
4110
NS
NA
Sulfate (mg/L) 2946 NA NA NS NA 2960 NS NA NA NS NA NA NA NA 2740 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
Chloride (mg/L) 35.39 NA 3/17/2015 36J NA 37.8 NA NA NA 37.3 NA NA 34.1 NA
MW-32 (Class III)Sulfate (mg/L) 2556.70 NS NA NS NA NS NA 4/8/2015 2150 NS NA NS NA NS NA 7/23/2015 NA NS NA NS NA 11/3/2015 NA 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
Values in () parentheses are the field pH measurements for the resampled analyses.
Monitoring Well
(Water Class)
Constituent Exceeding
GWCL
GWCL in
August 24,
2012 GWDP
January 2016
Monthly
Sample Date
January'
2016
MonthlyResult’
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
Results
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
October 2016
Monthly
Sample Date
October 2016
Monthly
Result
_____________
Q4 2016
Sample Date
16
Q4 2016
Result
December 2016
Monthly
Sample Date
December 2016
Monthly Result
R quired Quarterly Sampling Wells
MW-11 (Class II)
Manganese (ug/L)131.29 1/20/2016 197 217 3/3/2016 155 4/12/2016 166 159 6/14/2016 158 7/13/2016 140 8/16/7016 158 9/14/2016 169 10/5/2016 160
11/7/2016
203 12/6/2016 202
Sulfate (mg/L)1309 NS NA 1160 NS NA NS NA 1200 NS NA NS NA Or I \M —V/ 1 yj 1160 NS NA NS NA 1290 NS NA
MW-14 (Class III)
Fluoride (mg/L)0.2 NS NA
2/15/2016
0.134 NS NA NS NA 0.121 NS NA NS NA
8/17/2016
0.149 NS NA NS NA
11/2/2016
0.137 NS NA
Field pH (S.U.)6.5 - 8.5 1/19/2016 6.27 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 6.71 9/14/2016 6.43 10/5/2016 6.69 6.59 12/6/2016 6.38
MW-25 (Class III)
Field pH (S.U.)6.5 - 8.5
1/19/2016
6.18 6.50
3/2/2016
6.57 6.51
5/3/2016
6.24
6/14/2016
6.25
7/12/2016
6.23
8/17/2016
6.57
9/13/2016
6.21
10/4/2016
6.66
11/2/2016
6.65
12/5/2016
6.70
Cadmium (ug/L)1.5 1.37 2/8/2016 LSI 1.42 4/12/2016 1.39 1.43 1.43 1.44 1.37 1.41 1.41 1.33 1.41
Fluoride (mg/L)0.42 NA 0.319 NA NA 0.303 NA NA 0.315 NA NA 0.329 NA
Uranium (ug/L)6.5 6.54 6.16 6.22 6.03 6.30 5.99 6.64 6.33 6.48 6.36 6.48 6.70
MW-26 (Class III)
Nitrate + Nitrite (as N)
(mg/L)0.62
1/20/2016
0.943 1.66
3/2/2016
1.95 0.990 1.85
6/15/2016
1.66
7/14/2016
1.63
8/18/2016
2.70
9/15/2016
1.67
10/6/2016
1.11
11/9/2016
2.73
12/6/2016
1.80
Uranium (ug/L)41.8 29.3 30.4 67.7 53.9 39.7 52.7 45.4 34.2 31.7 32.2 30.2 34.9
Chloroform (ug/L)70 2370
2/16/2016
3530 2280 2060 1720 1860 3300 2950 3950 1660 2440 2970
Chloride (mg/L)58.31 63.5 69.1 76.8 4/13/2016 67.4 5/4/2016 68.1 81.6 68.3 78.6 75.6 71.1 67.9 73.7
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 6.68 5.90 6.23
Methylene Chloride (ug/L)5 4.73 8.68 3.93 5.62 3.63 4.12 8.99 6.08 11.9 3.49 3.40 5.08
MW-30 (Class II)
Nitrate + Nitrite (as N)
(mg/L)2.5
1/20/2016
14.6 20.0
3/2/2016
17.8 18 17.3
6/14/2016
18.5
7/13/2016
16.1
8/18/2016
18.0
9/14/2016
17
10/5/2016
17.2
11/3/2016
18.0
12/6/2016
18.2
Chloride (mg/L)128 143 145 142 144 139 142 137 150 146 148 143 158
Uranium (ug/L)8.32 8.34 2/10/2016 7.76 7.82 4/13/2016 7.55 5/4/2016 8.18 7.66 8.10 8.23 8.22 1.64 7.92 8.63
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 6.87 6.94 6.34
Selenium (ug/L)34 41.7 42.5 43.2 41.0 42.5 41.8 42.7 43.1 43.0 42.8 43.4 42.1
MW-31 (Class III)
Nitrate + Nitrite (as N)
(mg/L)5
1/19/2016
18.9 18.8
3/2/2016
18.0 22.8 18.6
6/15/2016
19.2
7/12/2016
17.4 19.7
9/13/2016
18.6
10/4/2016
18.8
11/1/2016
19.8
12/5/2016
18.5
TDS (mg/L)1320 1560 1490 1580 1710 1550 1580 1610 1710 1570 1670 1690 1670
Chloride (mg/L)143 228 246 228 254 243 252 241 272 254 260 267 274
Selenium (ug/L)71 85.1 2/15/2016 81.0 85.7 4/12/2016 81.6 5/3/2016 84.6 83.3 85.6 8/16/2016 85.4 85.5 88.2 89.0 87.1
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 6.99 6.92 6.79
Uranium (ug/L)9.1 NS 8.41 NS NS 9.05 NS NS 9.41 NS NS 9.56 10.3
Sulfate (mg/L)532 675 631 654 715 699 748 712 766 703 720 752 748
MW-35 (Class II)
Manganese (ug/L)200 211 194 194
4/12/2016
213 203
6/15/2016
228
7/12/2016
210 204
9/13/2016
198 196
11/9/2016
224
12/5/2016
189
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 2.65 3.33 2.80
Field pH (S.U.)6.5 - 8.5
1/19/2016
6.35
2/10/2016
6.70
3/2/2016
6.53 6.51
5/3/2016
6.22 6.20 6.28
8/16/2016
6.65 6.21
10/4/2016
6.73 6.30 6.50
Selenium (ug/L)12.5 8.62 14.4 20.2 9.2 12.9 6.18 8.60 16.80 18.50 14.0 10.50 21.90
Uranium (ug/L) | 7.5 21.1 20.8 21.8 19.9 21.2 19.4 21.5 22.2 22.0 21.0 22.0 24.0
uired Semi-An Welts
MW-01 (Class II)
Chloride (mg/L)22.1 NA 22.1 NA NA 22.0
NS
NA
NS
NA 21.5
NS
NA
NS
NA
11/8/2016
23.7
NS
NA
Field pH (S.U.)6.77 - 8.5 NS NA 2/10/2016 7.06 NS NA NS NA 4/20/2016 6.36 NA NA 8/24/2016 7.21 NA NA 6.54 NA
Sulfate (mg/L)838 NA 812 NA NA 825 NA NA 866 NA NA 720 NA
MW-03A (Class III)Field pH (S.U.)6.5 - 8.5
KIC
NA
i/i tu'tn i a
7.08
XTC
NA
Nfe
NA
4/77/901
6.43
NS
NA
NS
NA
9/22/2016
6.79
NS
NA
NS
NA
11/8/2016
6.35
NS
NA
Sulfate (mg/L)3640 NA
U LO/ZUIO 3580 [N5 NA [NO NA 3580 NA NA 3390 NA NA 3440 NA
Selenium (ug/L)89 NA 91.5 NA NA 103 NA NA 75.7 NA NA 142 NA
MW-05 (Class II)Field pH (S.U.)6.5 - 8.5 XIO NA 2/15/2016 7.44 Njc NA NS NA 4/21/2016 6.92 NS NA NS NA 8/19/2016 7.29 NS NA NS NA 11/9/2016 6.81 NS NA
Uranium (ug/L)7.5
INo
1.15 no 0.869 0.688 0.661
MW-12 (Class III)
Selenium (ug/L)25 NA 23.8 NA NA 31.2
NS
NA
NS
NA
8/19/2016
27.7
NS
NA
NS
NA
11/8/2016
29.3
NS
NA
Uranium (ug/L)23.5 NS NA 2/4/2016 NA NS NA NS NA 4/21/2016 23.3 NA NA NA NA NA 22.6 NA
Field pH (S.U.)6.5 - 8.5 NA 6.36 NA NA 6.31 NA NA 6.84 NA NA 6.43 NA
MW-15 (Class III)Selenium (ug/L)128.7 NA 123 XTC NA NIC NA 4/77/9016 126 NS NA NS NA 8/18/2016
no
NS NA NS NA 11/3/2016 112 NS NA
Field pH (S.U.)6.62 - 8.5 NS NA 2/4/ZU ID 6.30 [No NA INO NA 4/Z//ZU10 6.02 NA NA 6.71 NA NA 6.68 NA
Q12016 Results Q2 2016 Results Q3 2016 Q4 2()16
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
Ql 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
October 2016
Monthly
Sample Date
October 2016
Monthly
Result
Q4 2016
Sample Date
Q4 2016
Result
December 2016
Monthly
Sample Date
December 2016
Monthly Result
Required Semi-Annual!Sampling Wells, continued
MW-18 (Class III)
Thallium (ug/1)1.95
NS
NA
2/9/2016
2.67
NS
NA NA
4/19/2016
2.77
NS
NA
NS
NA
8/23/2016
2.58
NS
NA
NS
NA
11/2/2016
2.73
NS
NA
Sulfate (mg/L)1938.9 NA 1890 NA NA 1890 NA NA 1960 NA NA 1780 NA
Field pH (S.U.)6.25-8.5 NA 6.10 NA NS NA 5.93 NA NA 6.64 NA NA 6.55 NA
TDS (mg/L) 3198.77 NA 3130 NA NA 3190 NA NA 3180 NA NA 3140 NA
MW-19 (Class III)Field pH (S.U.)6.78-8.5
NS
NA
2/9/2016
6.76
NS
NA NA
4/19/2016
6.25
NS
NA
NS
NA
8/23/2016
7.07
NS
NA
NS
NA
11/7/2016
6.47
NS
NA
Nitrate + Nitrite (as N)
(mg/L)2.83 NA 2.44 NA NA 2.63 NA NA 2.62 NA NA 2.68 NA
MW-23 (Class III)Field pH (S.U.) 6.5 - 8.5 NS NA NS NA NS NA NS NA 5/18/2016 6.59 NS NA NS NA NS NA NS NA NS NA 11/16/2016 6.26 NS NA
MW-24 (Class III)
Cadmium (ug/L)2.5
NS
NA
2/17/2016
6.31
NS
NA NA
4/28/2016
6.07
NS
NA
NS
NA
9/22/2016
3.97
NS
NA
NS
NA 3.67
NS
NA
Fluoride (mg/L) 0.36 NA 0.117 NA NA 0.446 NA NA 0.135 NA NA
11/2/2016
0.345 NA
Thallium (ug/L)1 NA 2.04 NA NS NA 2.10 NA NA 1.57 NA NA 1.46 NA
Beryllium (ug/L)2 NA NA NA NA 1.21 NA NA NA NA NA <0.5 NA
Field pH (S.U.)6.5 - 8.5 NA 5.95 NA NA 4.83 NA NA 6.00 NA NA 5.48 NA
MW-27 (Class III)
Nitrate + Nitrite (as N)
(mg/L)5.6
NS
NA
2/2/2016
6.50
NS
NA NA
4/20/2016
7.40
NS
NA NA
8/24/2016
6.46
NS
NA
NS
NA
11/1/2016
6.89
NS
NA
Chloride (mg/L)38 NA 47.3 NA NS NA 43.1 NA NS NA 42.3 NA NA 43.2 NA
Field pH (S.U.) 6.5 - 8.5 NA 6.59 NA NA 6.54 NA NA 7.36 NA NA 6.93 NA
MW-28 (Class III)
Chloride (mg/L)105
NS
NA 130
NS
NA NA
4/20/2016
121
NS
NA NA 127 NA
NS
NA
11/1/2016
126
NS
NA
Cadmium (ug/L)5.2 NA 2/2/2016 5.26 NA NA 4.90 NA NS NA AM /AA 1 /I 5.14 NS NA NA 4.84 NA
Uranium (ug/L)4.9 NA 4.61 NA NS NA 3.95 NA NA 9/1/2016 4.71 NA NA 4.09 NA
Field pH (S.U.)6.1 -8.5 NA 5.46 NA NA 5.73 NA NA 6.56 NA NA 6.21 NA
MW-29 (Class III)
TDS (mg/L)4400
NS
NA 4410
NS
NA NA
4/27/2016
4100
NS
NA NA
9/1/2016
4410 NA
NS
NA
11/8/2016
4090
NS
NA
Sulfate (mg/L)2946 NA 2/10/2016 2710 NA NS NA 2730 NA NS NA 2750 NS NA NA 2290 NA
Field pH (S.U.)6.46 - 8.5 NA 6.47 NA NA 6.03 NA NA 6.78 NA NA 6.35 NA
Chloride (mg/L)35.39 NA 38.2 NA NA 36.3 NA NA 38.3 NA NA 39.1 NA
MW-32 (Class III)Sulfate (mg/L) 2556.70 NS NA 2/3/2016 NA NS NA NS NA 4/20/2016 2220 NS NA NS NA 8/17/2016 NA NS NA NS NA 10/31/2016 2590 NS NA
Field pH (S.U.) 6.4 - 8.5 NA 5.99 NA NA 6.06 NA NA 6.29 NA NA 6.38 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 Fourth Quarter 2017 under the August 24, 2012 GWDP
. Q12017 Q2 2017 03 2017 04 2017
Monitoring Well
(Water Class)
Constituent
Exceeding GWCL
GWCL in August
24, 2012 GWDP
January 2017
Monthly
Sample Date
January 2017
Monthly Result
Q1 2017
Sample Date
Q1 2017
Result
March 2017
Monthly
Sample Date
March 2017
Monthly
Result
April 2017
Monthly
Sample Date
April 2017
Monthly
Result
Q2 2017
Sample Date
Q2 2017
Result
June 2017
Monthly
Sample Date
June 2017
Monthly
Result
July 2017
Monthly
Sample Date
July 2017
Monthly
Result
Q3 2017
Sample Date
Q3 2017
Result
Sept. 2017
Monthly
Sample Date
Sept. 2017
Monthly
Result
Oct. 2017
Monthly
Sample Date
Oct. 2017
Monthly
Result
Q4 2017
Sample Date
Q4 2017
Result
Dec. 2017
Monthly
Sample Date
Dec. 2017
Monthly
Result
Sample
Frequency
Required Quarterly Samj ling Wells
MW-11 (Class II)
Manganese (ug/L)131.29 1/18/2017 152
2/8/2017
162 3/6/2017 144 4/5/2017 155
5/2/2017
174 6/5/2017 168 7/12/2017 154
8/15/2017
191 9/12/2017 217 10/5/2017 174 11/7/2017
159
12/5/2017
173 Quarterly
Sulfate (mg/L)1309 NS NA 1050 NS NA NS NA 1140 NS NA NS NA
0/ 1 Jl L\) 1 /1360 NS NA NS NA 1060 1130 Quarterly
MW-14 (Class III)
Fluoride (mg/L)0.2 NS NA
2/2/2017
0.115 NS NA NS NA
5/1/2017
0.22 NS NA NS NA 0.120 0.137
10/3/2017
0.166
11/7/2017
0.217
12/5/2017
0.360 Quarterly
Field pH (S.U.)6.5 - 8.5 1/18/2017 6.36 6.34 3/7/2017 6.35 4/5/2017 6.28 6.75 6/6/2017 6.40 7/11/2017 6.61
8/15/2017
6.19
9/12/2017
6.46 6.67 6.68 6.72 Quarterly
MW-25 (Class III)
Field pH (S.U.)6.5 - 8.5 6.40
2/7/2017
6.34
3/7/2017
6.62
4/4/2017
6.02
5/1/2017
6.50
6/6/2017
6.64
7/12/2017
6.76 6.20 6.21
10/2/2017
6.60
11/1/2017
6.81 6.93 Quarterly
Cadmium (ug/L)1.5 1/17/2017 1.42 1.45 1.46 1.58 1.35 1.32 1.42 8/14/2017 1.33 9/11/2017 1.51 1.40 1.40 12/4/2017 1.60 Quarterly
Fluoride (mg/L)0.42 NA 0.261 NA NA 0.317 NA NA 0.305 NA NA 0.566 NA Quarterly
6.5 6.54 6.60 6.39 6.65 6.27 6.12 6.66 6.31 6.12 6.72 5.98 6.09 Quarterly
MW-26 (Class III)
Nitrate + Nitrite (as N)
(mg/L)0.62 0.875
2/9/2017
0.662 1.72 1.12
5/3/2017
1.27
6/8/2017
1.74
7/13/2017
1.04 0.825 0.905
10/5/2017
1.87
11/8/2017
1.04 1.35 Quarterly
Uranium (ug/L)41.8 59.0 61.9 30.9 56.3 50.8 37.9 33.5
8/16/2017
41.3 45.4 45.5 26.4 50.4 Quarterly
Chloroform (ug/L)70 1380 1740
3/7/2017
2030 1980 2340 3790 2440 1130 1310 1440 976 3110 Quarterly
Chloride (mg/L)58.31 1/19/2017 60.7 57.1 61.7 4/5/2017 59.1 65.7 70.3 63.5 65.8 9/12/2017 56.4 56.2 72.2 12/6/2017 61.4 Quarterly
Field pH (S.U.)6.74 - 8.5 6.67 6.42 6.06 6.01 6.53 6.81 6.73 6.52 7.28 6.62 6.56 7.15 Quarterly
Methylene Chloride
(ug/L)5 3.65 4.12 9.46 7.22 11.2 22.7 15.4 1.62 2.55 <1.00 <1.00 22.2 Quarterly
MW-30 (Class II)
Nitrate + Nitrite (as N)
(mg/L)2.5 19.0
2/2/2017
17.4
3/7/2017
18.1
4/5/2017
18.3
5/2/2017
17.5
6/5/2017
18.8
7/11/2017
16.2
8/14/2017
19.2 18.7
10/5/2017
18.8
11/1/2017
17.4 18.3 Quarterly
Chloride (me/L)128 150 150 147 146 146 153 160 173 149 153 156 159 Quarterly
Uranium (ug/L)8.32 1/18/2017 8.01 7.62 7.89 7.63 8.11 7.98 8.33 8.05 9/12/2017 7.80 8.35 7.19 12/6/2017 8.18 Quarterly
Field pH (S.U.)6.5 - 8.5 6.61 6.40 6.68 5.99 6.77 6.87 7.04 6.32 7.35 6.85 7.08 6.75 Quarterly
Selenium (ug/L)34 43.0 40.0 40.8 43.9 43.3 42.8 43.3 44.5 45.5 46.5 43.5 46.2 Quarterly
MW-31 (Class III)
Nitrate + Nitrite (as N)
(mg/L)5 20.9 21.1 20.4 19.5
5/1/2017
18.3
6/5/2017
20.8 18.0
8/14/2017
19.5 20.2
10/2/2017
21.0
11/1/2017
19.2 19.2 Quarterly
TDS (mg/L)1320 1730 1680 1690 1660 1820 1710 1830 1780 1780 1760 1770 1910 Quarterly
Chloride (mg/L)143 287 266
3/6/2017 |
250 263 263 278 254 310 248 287 292 285 Quarterly
Selenium (ug/L)71 1/17/2017 82.7 89.4 82.9 4/4/2017 88.0 85.2 85.7 7/11/2017 84.5 87.4 9/11/2017 90.3 95.5 87.0 12/4/2017 95.3 Quarterly
Field pH (S.U.)6.5 - 8.5 6.75 6.30 6.39 6.26 6.87 6.90 6.94 6.29 6.32 7.01 7.04 7.31 Quarterly
Uranium (ug/L)9.1 9.03 9.92 9.62 10.10 9.62 9.89 10.5 10.1 9.74 10.9 9.31 10.4 Quarterly
Sulfate (mg/L)532 809 751 741 758 741 808 747 916 762 823 847 825 Quarterly
MW-35 (Class II)
Manganese (ug/L)200 216 189
3/6/2017
201 211
5/1/2017
210
6/5/2017
207 216 197 189 177
11/1/2017
189 219 Quarterly
Gross Alpha minus Rn
& U (pCi/L)3.75 3.81 3.19 4.13 4.34 3.36 4.31 5.23 4.02 4.15 5.90 8.02
12/5/2017
3.93 Quarterly
Field pH (S.U.)6.5 - 8.5
1/18/2017
6.39 6.28 6.36
4/5/2017
6.33 6.68 6.51
7/12/2017
6.85
8/15/2017
6.21
9/11/2017
6.43
10/2/2017
6.66 6.76
I-/-*/ ZU 1 /.
12/12/2017 6.75. 6.66 Quarterly
Selenium (ug/L)12.5 8.93 19.30 8.09 13.40 8.58 7.47 13.1 14.1 9.28 19.1 12.0 17.2 Quarterly
Uranium (ug/L)7.5 21.2 21.1 20.7 22.9 20.8 22.8 23.2 20.8 20.1 22.5 18.9 22.2 Quarterly
Required Siemi-Annual Sarnpling Wells
MW-01 (Class II)
Chloride (mg/L)22.1 NA 22.8 NA NA
4/19/2017
22.4
NS
NA
NS
NA 21.9 NA NA
10/19/2017
20.6
NS
NA Semi-Annually
Field pH (S.U.)6.77 - 8.5 NS NA 1/31/2017 6.60 NS NA NS NA 6.76 NA NA 8/11/2017 6.61 NS NA NS NA 6.73 NA Semi-Annually
Sulfate (mg/L)838 NA 799 NA NA 856 NA NA 937 NA NA 795 NA Semi-Annually
MW-03A (Class III)
Field pH (S.U.)6.5 - 8.5
MC
NA 6.50
MC
NA
NS
NA
4/26/2017
6.56
NS
NA
NS
NA
8/17/2017
6.10
NS
NA
NS
NA
10/25/2017
6.38
NS
NA Semi-Annually
Sulfate (mg/L)3640 NA
z/y/zut /2800 INO NA 1XO NA 3450 NA NA 3740 NA NA 3340 NA Semi-Annually
Selenium (ug/L)89 NA 85.2 NA NA 93.9 NA NA 111 NA NA 89.6 NA Semi-Annually
MW-05 (Class II)Field pH (S.U.)6.5 - 8.5 MC NA 1/25/2017 6.46 MC NA NS NA 4/25/2017 6.98 NS NA NS NA 8/9/2017 7.09 NS NA NS NA 10/19/2017 6.94 NS NA
Semi-Annually
Uranium (ug/L)7.5 INo 145 INO 15.2 2.46 1.39 Semi-Annually
MW-12 (Class III)
Selenium (ug/L)25 NA 34.6
NS
NA NA
4/26/2017
37.0
NS
NA
NS
NA 27.3
NS
NA
NS
NA
10/25/2017
27.9 NA Semi-Annually
Uranium (ug/L)23.5 NS NA 1/25/2017 NA NA NS NA 23.7 NA NA 8/10/2017 22.5 NA NA 22.0 NS NA Semi-Annually
Field pH (S.U.)6.5 - 8.5 NA 6.71 NA NA 6.33 NA NA 6.42 NA NA 6.57 NA Semi-Annually
MW-15 (Class III)Selenium (ug/L)128.7 NA ■ /14 /in i 112 MC NA MC NA 4/26/2017 111 NS NA NS NA 8/11 /2017 105 NS NA NS NA 10/24/2017 116 NS NA Semi-Annually
Field pH (S.U.) 6.62 - 8.5 NS NA
I/Z4/ZU1 /6.67 [No NA [NO NA 6.48 NA NA
0/11/ L.\J 1 /6.26 NA NA 6.39 NA Semi-Annually
Q1 017 Q2 2017 Q3 2017
Monitoring Well
(Water Class)
4*
Constituent
Exceeding GWCL in August 24, 2012
January 2017
Monthly
Sample Date
January 2017
Monthly Result
Q1 2017
Sample Date
Q1 2017
Result
March 2017
Monthly
Sample Date
March 2017
Monthly
Result
April 2017
Monthly
Sample Date
April 2017
Monthly
Result
Q2 2017
Sample Date
Q2 2017
Result
June 2017
Monthly
Sample Date
June 2017
Monthly
Result
July 2017
Monthly
Sample Date
July 2017
Monthly
Result
Q3 2017
Sample Date
Q3 2017
Result
Sept. 2017
Monthly
Sample Date
Sept. 2017
Monthly
Result
Oct. 2017
Monthly
Sample Date
Oct. 2017
Monthly
Result
Q4 2017
Sample Date
Q4 2017
Result
Dec. 2017
Monthly
Sample Date
Dec. 2017
Monthly
Result
Sample
Frequency
Required Semi-Annual Sampling Wells, continued
MW-18 (Class III)
Thallium (ug/1)1.95 NA
2/1/2017
2.41 NA NA
4/18/2017
2.61
NS
NA
NS
NA
8/10/2017
2.38 NA
NS
NA
10/18/2017
2.60
NS
NA Semi-Annually
Sulfate (mg/L)1938.9 NA 1750 NA NA 1870 NA NA 1830 NA NA 1740 NA Semi-Annually
Field pH (S.U.) 6.25-8.5
NS NA 6.30 NS NA NS NA 6.13 NA NA 6.41
NS NA NA 6.25 NA Semi-Annually
TDS (mg/L) 3198.77 NA 3060 NA NA 2910 NA NA 2850 NA NA 3060 NA Semi-Annually
MW-19 (Class III)Field pH (S.U.)6.78-8.5 NA
1/31/2017
6.50 NA NA
4/18/2017
6.86
NS
NA
NS
NA
8/9/2017
6.66
NS
NA
NS
NA
10/24/2017
6.84
NS
NA Semi-Annually
Nitrate + Nitrite (as N)
(mg/L)2.83 NA 2.77 NA NA 2.61 NA NA 2.45 NA NA 2.86 NA Semi-Annually
MW-23 (Class III)Field pH (S.U.)6.5 - 8.5 NS NA 1/31/2017 6.45 NS NA NS NA 5/3/2017 5.81 NS NA NS NA 8/11/2017 6.30 NS NA NS NA 11/8/2017 7.00 NS NA Semi-Annually
MW-24 (Class III)
Cadmium (ug/L)2.5 NA
3/8/2017
2.18 NA NA
5/3/2017
2.56
NS
NA
NS
NA
8/17/2017
6.95
NS
NA NA
10/26/2017
6.65
NS
NA Semi-Annually
Fluoride (mg/L)0.36 NA 0.189 NA NA 0.347 NA NA 0.255 NA NA 0.569 NA Semi-Annually
Thallium (ug/L)1 NS NA 1.04 NS NA NS NA 1.18 NA NA 2.40 NA NS NA 2.48 NA Semi-Annually
Beryllium (ug/L)2 NA NA NA NA <0.5 NA NA NA NA NA 2.42 NA Semi-Annually
Field pH (S.U.)6.5 - 8.5 NA 4.96 NA NA 5.40 NA NA 5.77 NA NA 4.83 NA Semi-Annually
MW-27 (Class III)
Nitrate + Nitrite (as N)
(mg/L)5.6 NA
1/24/2017
7.24 NA NA
4/19/2017
7.38
NS
NA
NS
NA
8/9/2017
6.03
NS
NA
NS
NA 6.86
NS
NA Semi-Annually
Chloride (mg/L)38 NS NA 41.1 NS NA NS NA 38.2 NA NA 36.3 NA NA 10/16/2017 33.2 NA Semi-Annually
Field pH (S.U.)6.5 - 8.5 NA 6.85 NA NA 6.82 NA NA 6.65 NA NA 7.07 NA Semi-Annually
MW-28 (Class III)
Chloride (mg/L)105 NA
1/25/2017
131 NA NA
4/19/2017
120
NS
NA
NS
NA
8/22/2017
125
NS
NA NA
10/18/2017
123
NS
NA Semi-Annually
Cadmium (ug/L)5.2 NA 5.23 NS NA MO NA 5.10 NA NA 4.95 NA NS NA 4.97 NA Semi-Annually
Uranium (ug/L) 4.9
INo NA 5.6S NA INo NA 4.68 NA NA 5.68 NA NA 4.70 NA Semi-Annually
Field pH (S.U.)6.1 -8.5 NA 6.17 NA NA 6.40 NA NA 6.21 NA NA 6.40 NA Semi-Annually
MW-29 (Class III)
TDS (mg/L)4400 NA
1/26/2017
4200 NA NA
4/20/2017
4560
NS
NA
NS
NA
8/15/2017
3960 NA NA
10/16/2017
4050
NS
NA Semi-Annually
Sulfate (mg/L)2946 NS NA 2670 NS NA NS NA 2490 NA NA 2780 NS NA NS NA 2380 NA Semi-Annually
Field pH (S.U.) 6.46 - 8.5 NA 6.90 NA NA 6.10 NA NA 6.01 NA NA 6.48 NA Semi-Annually
Chloride (mg/L)35.39 NA 31.9 NA NA 37.6 NA NA 36.9 NA NA 36.3 NA Semi-Annually
MW-32 (Class III)Sulfate (mg/L)2556.70 NS NA 2/1/2017 2090 NS NA NS NA 4/19/2017 2100 NS NA NS NA 8/4/2017 2140 NS NA NS NA 10/12/2017 2050 NS NA Semi-Annually
Field pH (S.U.)6.4 - 8.5 NA 6.19 NA NA 6.04 NA NA 6.05 NA NA 6.40 NA Semi-Annually
Notes:
GWCL values are taken from August 24. 2012 version ofGWDP.
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.