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HomeMy WebLinkAboutDRC-2014-006743 - 0901a068804ba8f1ENERGYFUELS Energy Fuels Resources (USA) Inc. 225 Union Blvd. Suite 600 Lakewood, CO, US, 80228 303 974 2140 DRC-2014-006743 www.energyfuels.com November 14, 2014 VIA PDF AND OVERNIGHT DELIVERY Rusty Lundberg, Director, Division of Radiation Control Utah Department of Environmental Quality 195 North 1950 West P.O. Box 144850 Salt Lake City, UT 84114-4850 Re: State of Utah Ground Water Discharge Permit No. UGW370004 White Mesa Uranium Mill - Notice Pursuant to Part I.G.I (a) Dear Mr. Lundberg: The White Mesa Mill (the "Mill") performed third quarter ("Q3") groundwater monitoring during the period from July 1, to September 30, 2014 under the August 24, 2012 version of the Mill's Groundwater Discharge Permit (the "GWDP"). All analytical data needed for comparison to the GWCLs were received during the period ending October 17, 2014. Pursuant to Part I.G.I.a) of the GWDP, (August 24, 2012) please take notice that the concentrations of specific constituents in the monitoring wells highlighted in yellow and bold italics in the columns for this quarter in the attached Table 1 exceeded their respective GWCLs. For ease of review, Table 1 has been formatted to simplify the tracking of any continued exceedances from one monitoring period to the next by charting ongoing monitoring of the same well in the same row, and by highlighting exceedances (in color and bold italics). Part I.G. 1 c) of the GWDP states "that the Permittee shall prepare and submit within 30 calendar days to the Executive Secretary a plan and a time schedule for assessment of the sources, extent and potential dispersion of the contamination, and an evaluation of potential remedial action to restore and maintain groundwater quality to ensure that Permit limits will not be exceeded at the compliance monitoring point and that DMT or BAT will be reestablished." The summary below relating to Q3 2014 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 Radiation Control ("DRC") 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 acknowledge 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 DRC in teleconferences on April 27, and May 2, 2011, due to the ongoing activities and actions, the 30- Letter to Mr. Rusty Lundberg November 14, 2014 Page 2 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, ENTERA, 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 DRC on December 5, and December 19, 2011, EFRI submitted a Work Plan and Schedule on January 20, 2012 and a revised plan based on DRC comments on April 13, 2012. Based on the approved Work Plan and Time Schedule, EFRI and DRC 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, DRC 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. DRC 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 in Q3 2014 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, and March 19, 2014. 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 DRC as documented in DRC correspondence dated April 25, 2013, July 23, 2013, September 17, 2013 January 7, 2014, March 10, 2014, and June 5, 2014 respectively. 4. Chloroform and methylene chloride are the subject of the ongoing chloroform pumping program and are covered by State of Utah Notice of Violation ("NOV") and Groundwater Corrective Action Order ("CAO") State of Utah Department of Environmental Quality ("UDEQ") Docket No. UGW-20-01. As a result, the 30-day plan and schedule for assessment of chloroform and methylene chloride exceedances is not required. It is important to note that under the GWDP, GWCLs have been determined on a well-by-well basis to reflect background groundwater quality, as defined by the mean plus second standard deviation concentration, or the equivalent. Accordingly, the GWDP requires that constituent concentrations in each monitoring well shall not exceed the GWCLs set out in Table 2 of the GWDP. It should be noted that, because the GWCLs have been set at the mean plus second standard deviation, or the equivalent, un- impacted groundwater would normally be expected to exceed the GWCLs approximately 2.5% of the time. Therefore, exceedances are expected in approximately 2.5% of all sample results, and do not necessarily represent impacts to groundwater from Mill operations. In fact, more frequent sampling of a 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. Of W m • -.: Letter to Mr. Rusty Lundberg November 14, 2014 Page 3 1.0 Exceedances in Required Quarterly Sampling Wells 1.1 Quarterly Wells with Two Successive Exceedances As indicated in the attached Table 1, the analytes discussed below exceeded their respective GWCLs for two successive sampling periods in Q3 2014. The 30-day plan and schedule contemplated in Part I.G.I c) of the GWDP will be required for the consecutive exceedance of uranium in MW-28 as discussed below. The 30-day plan and schedule contemplated in Part I.G.I c) for the remainder of the consecutive exceedances which occurred in Q3 of 2014, will not be required for the reasons stated below. One-time exceedances and non-successive exceedances are noted on Table 1, but not listed below. Consecutive exceedances which occurred in previous reporting periods are discussed in the SARs submitted to DRC October 10, 2012, May 8, 2013, August 30, 2013, December 17, 2013, January 13, 2014, and March 19, 2014. MW-11 • Manganese concentrations exceeded the GWCL in MW-11 in the July and August monthly sampling events. This consecutive exceedance is addressed in the SAR, dated October 10, 2012. As a result of the SAR, the GWCLs have been recalculated and accepted by 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-26 • Nitrate + nitrite has exceeded its GWCL in all of the Q3 2014 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 for all of the Q3 2014 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. • Methylene chloride has exceeded its GWCL for all of the monitoring periods for Q3 2014. MW- 26 is used as a pumping well for the ongoing chloroform capture program and is expected to yield increased concentrations of methylene chloride. Because this well is used in the chloroform 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 DRC 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. ENEKGYFUet* Letter to Mr. Rusty Lundberg November 14, 2014 Page 4 • The uranium concentration exceeded its GWCL in all of the monitoring periods for Q3 2014. This consecutive exceedance is addressed in the SAR, dated October 10, 2012. As a result of the SAR, the GWCLs have been recalculated and accepted by DRC. The recalculated GWCLs will become effective upon their publication in the next revision of the GWDP. As a result of DRC's acceptance of the recalculated GWCLs, a plan and schedule to address this consecutive exceedance is not necessary and will not be submitted. Until such time as the new GWCLs become effective, the exceedances will continue to be noted and reported. • The chloride concentration exceeded its GWCL in all of the monitoring periods for Q3 2014. 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-30 • Nitrate + nitrite has exceeded its GWCL in all of the Q3 2014 sampling events. As mentioned above, a CAP has been submitted and approved and the specified actions are currently being implemented; therefore a plan to address this consecutive exceedance is not necessary and is not being submitted. • The chloride concentration exceeded its GWCL all of the Q3 2014 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 Q3 2014 sampling events. This consecutive exceedance is addressed in the SAR, dated October 10, 2012. As a result of the SAR, the GWCLs have been recalculated and accepted by 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-31 • Nitrate + nitrite has exceeded its GWCL in all of the Q3 2014 sampling events. As mentioned above, a CAP has been submitted and approved and the specified actions are currently being implemented; therefore a plan to address this consecutive exceedance is not necessary and is not being submitted. • The chloride concentration exceeded its GWCL in all of the monitoring periods for Q3 2014. As mentioned above, a CAP has been submitted and approved to address nitrate+nitrite contamination which is expected to address chloride in groundwater. The actions specified in the CAP are currently being implemented; therefore a plan to address this consecutive exceedance is not necessary and is not being submitted. • The sulfate concentration exceeded its GWCL in all of the monitoring periods for Q3 2014. This consecutive exceedance is addressed in the SAR, dated October 10, 2012. As a result of the SAR, ENERGY WRM Letter to Mr. Rusty Lundberg November 14, 2014 Page 5 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. • The selenium concentration exceeded its GWCL in all of the monitoring periods for Q3 2014. This consecutive exceedance is addressed in the SAR, dated August 30 2013. 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. • The Total Dissolved Solids ("TDS") concentration exceeded its GWCL in all of the Q3 2014 sampling events. This consecutive exceedance is addressed in the SAR, dated October 10, 2012. As a result of the SAR, the GWCLs have been recalculated and accepted by 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-35 • The manganese concentration exceeded the GWCL in the Q2 2014 and July monthly sampling events. A plan and schedule to address this exceedance is not necessary and is not being submitted because the exceedances are based on the interim GWCLs for MW-35, which have been set at a fraction of the Groundwater Quality Standards. Background has been established for MW-35 in the Background Report submitted to DRC on May 1, 2014. As a result of the Background Report, the GWCLs have been calculated and accepted by DRC 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 DRC'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 uranium concentration exceeded the GWCL in MW-35 in all of the Q3 2014 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 DRC on May 1, 2014. As a result of the Background Report, the GWCLs have been calculated and accepted by DRC 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 DRC's acceptance of the calculated GWCLs, a plan and schedule to address this consecutive exceedance is not necessary and will not be submitted. Until such time as the new GWCLs become effective, the exceedances will continue to be noted and reported. It should be noted that the exceedances of the interim GWCLs noted herein, do not necessarily represent impacts to groundwater from Mill activities. Letter to Mr. Rusty Lundberg November 14, 2014 Page 6 • The selenium concentration exceeded the GWCL in MW-35 in all of the Q3 2014 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 DRC on May 1, 2014. As a result of the Background Report, the GWCLs have been calculated and accepted by DRC 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 DRC'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 minus Rn and U ("gross alpha") concentration exceeded the GWCL in MW-35 in the August monthly and Q3 sampling events. A plan and schedule to address this exceedance is not necessary and is not being submitted because the exceedances are based on the interim GWCLs for MW-35, which have been set at a fraction of the Groundwater Quality Standards. Background has been established for MW-35 in the Background Report submitted to DRC on May 1, 2014. As a result of the Background Report, the GWCLs have been calculated and accepted by DRC 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 DRC's acceptance of the calculated GWCLs, a plan and schedule to address this consecutive exceedance is not necessary and will not be submitted. Until such time as the new GWCLs become effective, the exceedances will continue to be noted and reported. It should be noted that the exceedances of the interim GWCLs noted herein, do not necessarily represent impacts to groundwater from Mill activities. 1.2 Quarterly Wells with New Exceedances Reported in Q3 No new exceedances for the quarterly wells were noted during Q3 2014. 2.0 Exceedances in Semiannual Sampling Wells Accelerated to Quarterly 2.1 Semi-annual Wells with Two Successive Exceedances As indicated in the attached Table 1, the analytes discussed below exceeded their respective GWCLs for two successive sampling periods (Q2 2014 and Q3 2014). MW-3 • Fluoride has exceeded the GWCL for both the Q2 2014 sampling event and the Q3 2014 sampling event. This consecutive exceedance is addressed in the SAR, dated October 10, 2012. As a result of the SAR, the GWCLs have been recalculated and accepted by DRC. The recalculated GWCLs will become effective upon their publication in the next revision of the GWDP. As a result of DRC's acceptance of the recalculated GWCLs, a plan and schedule to 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. • Selenium has exceeded the GWCL for both the Q2 2014 sampling event and the Q3 2014 sampling event. This consecutive exceedance is addressed in the SAR, dated October 10, 2012. As a result of the SAR, the GWCLs have been recalculated and accepted by DRC. The recalculated GWCLs will become effective upon their publication in the next revision of the FN&KrrxMit Letter to Mr. Rusty Lundberg November 14, 2014 Page 7 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-3A • Selenium has exceeded the GWCL for both the Q2 2014 sampling event and the Q3 2014 sampling event. This consecutive exceedance is addressed in the SAR, dated October 10, 2012. As a result of the SAR, the GWCLs have been recalculated and accepted by DRC. The recalculated GWCLs will become effective upon their publication in the next revision of the GWDP. As a result of DRC's acceptance of the recalculated GWCLs, a plan and schedule to address this consecutive exceedance is not necessary and will not be submitted. Until such time as the new GWCLs become effective, the exceedances will continue to be noted and reported. MW-18 • Thallium has exceeded the GWCL for both the Q2 2014 sampling event and the Q3 2014 sampling event. This consecutive exceedance is addressed in the SAR, dated October 10, 2012. In the October 10, 2012 SAR, EFRI requested the removal of GWCLs for the far upgradient wells (MW-1, MW-18, and MW-19) at the Mill which cannot be impacted by Mill activities. In correspondence dated April 25, 2013, DRC noted "DRC 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 • Field pH has been slightly outside (slightly lower than) the GWCL for both the Q2 2014 sampling event and the Q3 2014 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 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-27 • Nitrate + Nitrite have exceeded the GWCL for both the Q2 2014 sampling event and the Q3 2014 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. • The chloride concentration exceeded its GWCL for both the Q2 2014 sampling event and the Q3 2014 sampling event and during previous quarters. 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 ENERGY FlMl 9 Letter to Mr. Rusty Lundberg November 14, 2014 Page 8 • Chloride has exceeded the GWCL for both the Q2 2014 sampling event and the Q3 2014 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. • Uranium has exceeded the GWCL for both the Q2 2014 sampling event and the Q3 2014 sampling event. This is the first consecutive exceedance for uranium in MW-28. Therefore, a plan and schedule for assessment will be submitted under separate cover within 30 days of this Exceedance Notice. • Gross Alpha has exceeded the GWCL for both the Q2 2014 sampling event and the Q3 2014 sampling event. This consecutive exceedance is addressed in the SAR, dated January 13, 2014. 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. 2.1 Semi-annual Wells with New Exceedances Reported in Q3 One new exceedance for the Q3 2014 semi-annual well sampling program is listed below. This exceedance will result in an accelerated sampling frequency from semi-annually to quarterly. It is important to note that the well listed below will only be sampled during the first and third quarterly events for the constituent which exceeded the GWCL. The well listed below will be sampled for all constituents listed in the GWDP during the second and fourth quarterly events as that is the regularly scheduled sampling for the semi-annual wells. • Field pH in MW-1 was below the GWCL in the Q3 sampling event. Relative to accelerated reporting requirements, based on phone conversations with UDEQ 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 UDEQ, EFRI proposed modified language for the GWDP, Part l.G.l on May 25, 2012, to document DRC concurrence with the accelerated reporting and monitoring agreements resulting from the April 5, 2012 teleconference. MW-32 Yours truly, ENERGY FUELS RESOURCES (USA) INC. Kathy Weinel Quality Assurance Manager cc: David Frydenlund Harold Roberts David Turk Dan Hillsten Scott Bakken £H£BGYFU£IS Table 1 - GWCL Exceedances for Third Quarter 2014 under the August 24,2012 GWDP Ql 2010 Results Q2 2010 Results Q3 2010 Results Q4 2010 Results Monitoring Well (Water Class) Constituent Exceeding GWCL GWCL in August 24,2012 GWDP Ql 2010 Sample Date Ql 2010 Result Q2 2010 Sample Date Q2 2010 Result May 2010 Monthly Sample Date May 2010 Monthly Result June 2010 Monthly Sample Date June 2010 Monthly Result July 2010 Monthly Sample Date July 2010 Monthly Result August 2010 Monthly Sample Date August 2010 Monthly Result Q3 2010 Sample Date Q3 2010 Result October 2010 Monthly Sample Date October 2010 Monthly Result Q4 2010 Sample Date Q4 2010 Result December 2010 Monthly Sample Date December 2010 Monthly Result Required Quarterly Sampling Wells MW-ll (Class II) Manganese (ug/L) 131.29 2/10/2010 134 4/28/2010 137 5/24/2010 122 6/16/2010 99 7/20/2010 123 8/25/2010 138 9/8/2010 128 10/20/2010 11/11/2010 133 12/15/10 158 MW-14 (Class III) Field pH (S.U.) 6.5 - 8.5 2/2/2010 6.45 4/21/2010 6.29 5/21/2010 6.36 6/16/2010 6.45 7/20/2010 7.19 8/25/2010 6.48 9/8/2010 6.51 10/20/2010 6.60 11/10/2010 6.37 12/15/2010 6.47 Field pH (S.U.) 6.5 - 8.5 6.53 7.2 6.58 6.36 MW-25 (Class III) Cadmium (ug/L) 1.5 2/3/2010 1.26 4/28/2010 NS NS NS 9/8/2010 1.4 NS 11/10/2010 1.26 NS Fluoride (mg/L) 0.42 0.31 0.33 NA NA 0.34 NA Uranium 6.5 5.93 6.43 NA NA NA NA 6.57 NA NA NA NA Nitrate + Nitrite (as N) (mg/L) 0.62 1.3 0.3 0.4 0.6 0.6 0.7 0.4 0.2 Uranium (ug/L) 41.8 58.7 66.7 37.4 36.6 71.8 72.7 37.5 30.4 Chloroform (ug/L) 70 700 1700 800 940 900 2800 2100 1000 1900 Chloride (mg/L) 58.31 72 57 80 47 52 49 64 52 48 MW-26 (Class III) Carbon Tetrachloride (ug/L) 2/2/2010 4/22/2010 5/21/2010 6/16/2010 7/21/2010 8/16/2010 9/26/2010 10/20/2010 11/15/2010 12/15/2010 <1.0 <1.0 NA <1.0 NA NA <1.0 NA <1.0 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 Dichloromethane (Methylene Chloride) (ug/L) 2.2 12 24 45 5.5 16 0.4 29.6 1400 52 NA 6.45 1.2 Nitrate + Nitrite (as N) (mg/L) 2.5 16.1 15.8 15.3 7/21/2010 16 8/24/2010 16 15 15 15 MW-30 (Class II) Chloride (mg/L) 128 2/9/2010 127 4/27/2010 47 5/21/2010 NS 6/15/2010 NS NS NS NS NS 9/14/2010 111 10/19/2010 NS 11/9/2010 12<i 12/14/2010 Uranium (ug/L) 8.32 6.82 6.82 NS NS NS NS NS 7.10 NS 6.64 Selenium (ug/L) 34 35.3 NS NS 7/27/2010 8/24/2010 35.6 32.6 32.2 16 NS NS 30.5 Nitrate + Nitrite (as N) (mg/L) 21.7 22.5 5/21/2010 23 6/15/2010 21.1 7/21/2010 20 8/24/2010 22 21 10/19/2010 20 20 TDS (mg/L) 1320 1150 1220 NS NA NS NA NS NA NS NA 1330 NS NA 1320 MW-31 (Class III) Chloride (mg/L) 143 2/9/2010 128 4/20/2010 128 NS NA NS NA NS NA NS Selenium (ug/L) 71 60.8 59.6 NS NS NS NS 9/13/2010 (9/21/10) 11/9/2010 I 38 12/14/2010 64.4 NS NA 60 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 8/24/2010 7.10 7.66(7.13) 10/19/2010 6.92 Sulfate (mg/L) 532 507 NS NS NS 527 NS 539 20 NS NS NS 6.95 NS Manganese (ug/L) 200 NA NA NA 698 Thallium (ug/l) 0.5 NA NA 1.14 MW-35 (Class II) Gross Alpha minus Rn & U (pCi/L) 3.75 NS NA NS NS NA NS NA NS NA NS NA NS NA NS NA 11/30/2010 2.6 NS Selenium (ug/L) 12.5 NA NA NA NA NA ND Uranium (ug/L) 7.5 NA NA 27.2 NA NA Required Semi-Annual Sampling Wells MW-01 (Class II) Manganese (ug/L) Tetrahydrofuran (ug/L) Field pH (S.U.) Sulfate (mg/L) 289 11.5 6.77 - 8.5 838 NS NA NA NA 5/5/2010 7.8 7.86 (6.87) 805 NS NA NA NA NS NA NA NA NS NA NA NS NA NA NS NA NA NA NS NA NA NA 11/18/2010 275 10.7 6.96 792 NS NA NA Selenium (ug/L) 37 NA 3J7.2 35.5 38.8 Field pH (S.U.: 6.5 - 8.5 NA 6.14 (6.25) NA 6.39 6.35 MW-03 (Class III) Sulfate (mg/L) 3663 NS 5/3/2010 3490 NS NS NS NA NS NA 9/20/2010 NA NS NA 11/19/2010 3430 NS Nitrate + Nitrite (as N) (mg/L) 0.73 0.3 NA 0.4 Fluoride (Mg/L) 0.68 0.71 0.63 NA 0.77 NA NA NA Field pH (S.U.) 6.5 - 8.5 NA 6.23 (6.24) NA NA NA NA 6.42 NA 6.21 MW-3A (Class III) Sulfate (mg/L) 3640 NA 3680 NA 3630 3850 Nitrate + Nitrite (as N) (mg/L) 1.3 NS NA 5/4/2010 1.0 NS NA NS NA NS NA NS NA 9/21/2010 NA NS NA 11/22/2010 1.2 NS TDS (mg/L) 5805 5860 5330 Selenium (ug/L) NA NA NA NA NA NS 94.8 NA NA NA MW-05 (Class II) Uranium (ug/L) 7.5 NS NA 4/26/2010 0.39 NS NA NS NA NS NA NS NA NS NA NS NA 11/11/2010 11.6 NS MW-12 (Class III) Field pH (S.U.) 6.5 - 8.5 NS NA 4/27/2010 7.16 NS NA NS NA NS NA NS NA 9/20/2010 6.62 NS NA 11/19/2010 6.47 NS N \ MW-15 (Class III) Selenium (ug/L) 128.7 Field pH (S.U.: 6.62 - 8.5 NS NA 4/21/2010 11)0 6.98 NS NA NA NS NA NA NS NA NA NS NA NS NA NA NS NA 11/11/2010 99.5 6.57 NS NA Ql 2010 Results Q2 2010 Results Q3 2010 Results Q4 2010 Results Monitoring Well (Water Class) Constituent Exceeding GWCL GWCL in Current GWDP Ql Sample Date Ql 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 Sampie Date August Monthly Result Q3 Sample Date Q3 Result October Monthly Sample Date October Monthly Result Q4 Sample Date Q4 Result December Monthly Sample Date December Monthly Result Required Semi-Annual Sampling Wells, continued MW-18 (Class III) Thallium (ug/l) Sulfate (mg/L) Field pH (S.U.) TDS (mg/L) 1.95 1938.9 6.25-8.5 3198.77 NS NA NA 5/4/2010 3.73 1950 6.2 3280 NS NA NA NA NS NA NA NS NA NA NS NA NA NA 3.64 1930 7.23 3190 NA NA 11/18/2010 3.57 1910 6.37 3030 NS NA NA Field pH (S.U.) 6.78-8.5 NA 6.61 (6.66) NA NA NA NA 6.93 NA MW-19 (Class III) Gross Alpha minus Rn & U (pCi/L) 2.36 NS 5/4/2010 0.9 NS NS NS NS 9/15/2010 NA 11/18/2010 1.2 Nitrate + Nitrite (as N) (mg/L) 2.83 NA 2.6 NA NA NA NA NA NA 2.4 NS NA MW-23 (Class III) Field pH (S.U.) 6.5-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 Cadmium (ug/L) 2.5 NA 4.28 NA 5.06 3.22 MW-24 (Class III) Fluoride (Mg/L) 0.36 0.14 NA NA 0.LS Thallium (ug/L) NS 5/6/2010 1.3 NS NA NS NA NS NA NS NA 9/21/2010 1.57 NS NA 11/17/2010 1.09 Field pH (S.U.) 6.5 - 8.5 5.91 (5.78) NA NA 6.64 NA 6.1 NS NA NA Nitrate + Nitrite (as N) (mg/L) 5.6 NA 5.8 NA NA N \ 5.7 MW-27 (Class III) Chloride (mg/L) IS 42 NA NA NA NA 42 NA 45 Sulfate (mg/L) 462 NS NA 5/3/2010 469 NS NA NS NA NS NA NS NA 461 NS NA 1 1/12/2010 452 TDS (mg/L) 1075 NA 1160 NA NA NA NA 1060 NA 1110 Gross Alpha minus Rn & U (pCi/L) 1.6 NA NA 2.4 NS NA NA NA Chloride (mg/L) 105 NA 108 NA NA NA 106 NA 107 Cadmium (ug/L) 5.2 4.20 NA NA N A NA 4.11 Uranium (ug/L) 4.9 NA 3.36 NA NA NA NA MW-28 (Class III) Vanadium (ug/L) 30 NS 4/19/2010 <15.0 NS NS NS NS NA 9/14/2010 NA NS 11/12/2010 <15.0 Manganese (ug/L) 1837 NA 1550 NA NA NA NA 1510 Field pH (S.U.) 6.1-8.5 5.67 NA 5.9/ 5.72 NS NA NA NA NA NA NA Manganese (ug/L) 5624 NA 4820 NA NA NA NA NA 4890 MW-29 (Class III) TDS (mg/L) 4400 NA 4400 NA NA NA 4390 NS 4/27/2010 NS NS NS NS NS NS 11/9/2010 Field pH (S.U.) 6.46 - 8.5 6.82 NA NA NA NA 6.17 NS NA NA NA MW-32 (Class III) Gross Alpha minus Rn & U (pCi/L) 3.33 NA 4.5 NA NA NA 2.9 N \ NS 4/20/2010 NS NS NS NS 9/13/2010 NS 11/10/2010 Field pH (S.U.) 6.4 - 8.5 NA 6.03 NA NA 6.33 6.05 NS NA 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 Third Quarter 2014 under the August 24, 2012 GWDP Ql 2011 Results Q2 2011 Results Q3 2011 Results Q4 2011 Results Monitoring Well (Water Class) Constituent Exceeding GWCL GWCL in August 24, 2012 GWDP January 2011 Monthly Sample Date January 2011 Monthly Sample Result Ql2011 Sample Date Ql 2011 Result March 2011 Monthly Sample Date March 2011 Monthly Result Q2 2011 Sample Date Q22011 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 Required Quarterly Sampling Wells MW-11 (Class 11) Manganese (ug/L) 131.29 1/11/2011 121 2/2/201 145 3/15/2011 68 4/4/2011 148 5/10/2011 170 d/15/201 121 7/6/2011 151 118 9/7/2011 106 10/4/2011 112 11/9/2011 105 12/14/2011 MW-14 (Class III) Field pH (S.U.) 6.5 - 8.5 1/11/2011 6.37 2/7/201 6.22 3/14/201 I 6.76 4/4/2011 6.63 5/10/2011 6.37 6/15/201 5.83 7/5/2011 6.4 8/3/2011 6.23 (6.41) 9/8/2011 6.50 10/4/2011 6.71 (6.82) 11/9/2011 6.6.5 12/12/2011 Field pH (S.U.) 6.5 - 82 6.44 6.66 6.79 6.7 6.1 5.77 6.29 8/3/2011 8/30/11 MW-25 (Class III) 6.42 (6.54) 6.54 6.51 Cadmium (ug/L) 1.5 1/11/2011 NA 2/2/2011 1.34 3/15/2011 NA 4/4/2011 1.27 5/11/2011 NA 6/20/201 1 NA 7/6/2011 NA 8/30/2012 1.19 9/7/2011 10/4/2011 1.27 11/9/2011 12/12/2011 Fluoride (mg/L) 0.42 NA 0.31 0.28 NA NA NA 0.31 0.32 Uranium 6.5 7.02 6.8 5.56 6.72 7.06 6.74 6.37 5.96 5.27 6.56 Nitrate + Nitrite (as N) (mg/L) 0.62 0.2 0.25 0.6 0.8 0.4 0.3 0.9 0.6 2.4 0.9 1.3 Uranium (ug/L) 41.8 32 69.3 60.2 57.4 18.5 57.1 19.0 56.1 58.9 55.6 Chloroform (ug/L) 70 800 730 1200 390 1900 730 300 1000 1300 440 1200 Chloride (mg/L) 58.31 52 59 64 64 64 66 61 55 MW-26 (Class III) Carbon Tetrachloride (ug/L) 1/12/201 1 2/16/2011 3/15/201 1 4/1/2011 5/10/2011 6/20/2011 7/6/2011 cl.O <1.0 <1.0 cl.O <1.0 <1.0 <1.0 8/3/2011 8/30/11 9/7/2011 10/12/2011 11/9/2011 12/14/2011 <1.0 <1.0 <1.0 <1.0 Field pH (S.U.) 6.74-6.83 6.06 6.89 6.22 6.43 6.52 6.35 6.07 (6.58) 6.71 6.82 6.75 Dichloromethane (Methylene Chloride) (ug/L) <1.0 10 14 3.1 20 2.4 10 7.9 2.6 8.9 MW-30 (Class II) Nitrate + Nitrite (as N) (mg/L) 2.5 15 16 17 16 16 17 17 14 16 16 16 Chloride (mg/L) 128 1/10/201 I NS 2/1/2011 134 3/14/2011 NS 4/11/2011 134 5/10/2011 128 6/20/201 I 127 7/5/2011 8/3/2011 9/7/2011 145 10/4/2011 129 11/8/2011 1 22 12/12/2011 Uranium (ug/L) 8.32 NS 5.97 NS 6.49 NS NS NS NS 9.83 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 Nitrate + Nitrite (as N) (mg/L) 19 21 22 21 20 22 22 20 21 21 21 MW-31 (Class III) TDS (mg/L) 1320 1240 1220 1250 1370 1290 1330 1280 1300 1300 1320 1290 Chloride (mg/L) 143 1/10/2011 NS 2/1/2011 145 NS 4/1/2011 143 5/10/2011 6/20/2011 145 148 148 148 10/3/2011 145 Selenium (ug/L) 71 NS 64.6 NS 65.2 NS NS NS 66.2 NS 11/8/2011 (11/29/12) 145 12/12/2011 NS Field pH (S.U.) 6.5 - 8.5 6.65 7.21 7.01 6.73 6.16! 6.64 6.67 7.03 7.28 7.01 (7.34) Sulfate (mg/L) 532 NS 538 531 503 512 540 532 537 541 539 552 Manganese (ug/L) 200 NA 248 NA 369 NA NA 348 267 270 283 Thallium (ug/l) 0.5 NA <0.50 NA <0.50 NA NA 0.52 NA 0.57 <0.50 MW-35 (Class II) Gross Alpha minus Rn & U (pCi/L) 3.75 NS NA 2/15/2011 2.6 NS 6/7/2011 3.7 NS NA NS NA 7/20/11 NA 8/30/2011 4.5 9/7/11 NA 10/3/11 4.4 11/8/2011 12/14/11 Selenium (ug/L) 12.5 NA ND NA Nl) NA NA NA 9.3 NA 10.5 NA Uranium (ug/L) 7.5 NA 12.7 NA 21.7 NA 24.2 18.3 22.3 20.1 24 Required Semi-Annual Sampling Wells MW-01 (Class II) Manganese (ug/L) Tetrahydrofuran (ug/L) Field pH (S.U.) Sulfate (mg/L) 289 11.5 6.77 - 8.5 838 NS NA NA NA NA NA NS NA NA 4/11/2011 4/19/2011 4/11/2011 4/11/2011 10.7 7.06 (7.67) 704 NS NA NS NA NA NA NA NA NA NS NA NA NA NA 10/11/2011 206 7.82 7.08 (7.51) NS NA NA NS Selenium (ug/L) 37 NA 40.5 NA 45.4 46 46.7 MW-03 (Class III) Field pH (S.U.) 6.5 - 8.5 NA 6.09 NA 6.46 6.32 6.53 (6.83) Sulfate (mg/L) 3663 NA 2/15/2011 NA NS 4/13/2011 3060 NS NA NS NA NS NA 8/10/2011 NA NS NA 10/10/2011 3470 NS NA NS Nitrate + Nitrite (as N) (mg/L) 0.73 NA NA NA 0.3 NA NA NA 0.3 Fluoride (Mg/L) 0.68 NA 0.69 NA 0.68 NA 0.96 NA 0.91 Field pH (S.U.) 6.5 - 8.5 6.05 NA 6.58 NA NA NA 6.19 NA 6.5 (6.92) NA MW-03A (Class III) Sulfate (mg/L) 3640 NA 3 730 3350 3560 NA 3750 Nitrate + Nitrite (as N) (mg/L) 1.3 NS NA 2/16/2011 NA NS NA 4/13/2011 1.2 NS NA NS NA NS NA 8/11/2011 NA NS NA 10/11/2011 NS NA NS TDS (mg/L) 5805 NA 5720 5810 5630 Selenium (ug/L) 99 NA 85.! 95 NA MW-05 (Class 11) Uranium (ug/L) 7.5 NS NA 2/14/2011 29.5 NS NA 4/12/2011 7.16 NS NA NS NA NS NA 8/9/2011 0.5 NS NA 10/10/2011 4.52 NS NA NS MW-12 (Class III) Field pH (S.U.) 6.5 - 8.5 NS 2/15/2011 6.43 NS NA 4/5/2011 6.67 NS NA NS NA NS NA 8/9/2011 6.13 NS N \ 10/6/2011 6.7 (6.97) NS NA NS MW-15 (Class 111) Selenium (ug/L) 128.7 Field pH (S.U.I 6.62 - 8.5 NS NS NS NA NA 4/12/2011 116 NS NA NS NA NS NA NS N A NS 10/10/2011 I 12 6.70 NS NA NA NS Ql 2011 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 Ql 2011 Sample Date Ql 2011 Result March 2011 Monthly Sample Date March 2011 Monthly Result Q22011 Sample Date Q220U 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 Q32011 Sample Date Q3 2011 Result September 2011 Monthly Sample Date September 2011 Monthly Result Q42011 Sample Date Q42011 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/l) Sulfate (mg/L) Field pH (S.U.) TDS (mg/L) 1.95 1938.9 6.25-8.5 3198.77 NS NA NA NA 2/15/2011 3.49 1770 6.27 3250 NS NA NA NA 4/6/2011 3.74 1780 3259 NA NA NA NS NA NA NS NA NA 8/10/2011 9/21/11 4.0 3.39 1910 5.95 (6.30) 3190 NA NA NA 3.83 2020 6.55 (6.63) 3220 NA NA NA NA NA Field pH (S.U.) 6.78-8.5 NA 6.78 NA 7.03 NA NA NA 6.65 NA 6.88 (7.02) MW-19 (Class III) Gross Alpha minus Rn & U (pCi/L) 2.36 NA NS 4/5/2011 0.5 NS NS 7/20/3011 0.6 Nitrate + Nitrite (as N) (mg/L) 2.83 NA NS NA 2.6 NA NA NA NS 4.0 NA 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 Cadmium (ug/L) 2.5 2.78 NA 2.61 NA 1.46 MW-24 (Class III) Fluoride (Mg/L) 0.36 NA 0.19 NA 0.36 Thallium (ug/L) NS NA 2/10/2011 1.42 NS NA 4/5/2011 1.07 NA NS NA NS 8/4/2011 <0.50 NS NA 10/11/2011 0.62 NS Field pH (S.U.) 6.5-8.5 NA 5.73 6.12 NA NA 6.45 NA 6.44 NA NA NA NS NA NA NA Nitrate + Nitrite (as N) (mg/L) 5.6 NA 6.4 NA 6.3 MW-27 (Class III) Chloride (mg/L) 38 NA 46 NA 43 NA NA NA 43 NA 44 Sulfate (mg/L) 462 NS 2/9/2011 455 NS NA 4/5/2011 NS NA NS NA NS NA 8/8/2011 424 NS NA 10/5/2011 456 TDS (mg/L) 1075 1090 NA 1190 NA NA 1090 1110 Gross Alpha minus Rn & U (pCi/L) 0.7 0.8 NA NA NS NA NA NA Chloride (mg/L) 105 114 NA 109 NA 105 143 Cadmium (ug/L) 5.2 NA NA 4.13 NA NA NA 3.99 MW-2 8 (Class III) Uranium (ug/L) 4.9 NA NA 3.29 NA NA NA 3.19 Vanadium (ug/L) 30 NS NA 2/14/2011 NA NS 4/11/2011 <15.0 NS NA NS NA NS 8/8/2011 NS NA 10/5/2011 <15.0 NS Manganese (ug/L) 1837 1690 NA NA 1540 Field pH (S.U.) 6.1 -8.5 NA 5.69 6.01 NA 5.78 NA 15.07(6.11) NA NA NA NA NS NA NA NA NA Manganese (ug/L) 5624 NS NA NA 4900 NA NA NA NA 4800 MW-29 (Class III) TDS (mg/L) 4400 NS 4080 NA NA 4280 NS NS 4/18/2011 NS NS NS 8/9/2011 NS 10/5/2011 NS Field pH (S.U.) 6.46 - 8.5 NA NS NA 6.45 NA NA NA 6.20 NA 6.52 NA NS NA MW-32 (Class III) Gross Alpha minus Rn & U (pCi/L) 3.33 1.5 NA 4.6 NA NA NS 2/9/2011 NS 4/1/2011 NS NS NS Field pH (S.U.) 6.4 - 8.5 5.99 NA 6.14 NA NA 8/2/2011 8/30/11 1.9 3.7 6.10 (6.20) NS 10/3/2011 NS 6.35 NS 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 Third Quarter 2014 under Ihe August 24. 2012 GWDP Ql 2012 Results Q2 2012 Results Q3 2012 Results Q4 2012 Results Monitoring Well (Water Class) Constituent Exceeding GWCL GWCL in August 24, 2012 GWDP January 2012 Monthly Sample Date January 2012 Monthly Result Ql 2012 Sample Date Ql 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 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 7/11/2012 135 8/7/2012 166 9/19/2012 130 10/23/2012 161 11/12/2012 138 12/24/2012 MW-14 (Class III) Field pH (S.U.) 6.5 - 8.5 1/24/2012 6.36 2/21/2012 6.57 3/14/2012 6.51 4/12/2012 6.97 5/9/2012 6.73 6/19/2012 6.90 7/11/2012 6.89 8/7/2012 6.58 9/18/2012 10/23/2012 6.83 11/27/2012 6.52 12/18/2012 Field pH (S.U.) 6.5 - 8.5 6.63 6 S3 6.55 6.58 6.73 6.99 6.55 6.54 6.54 6.47 MW-25 (Class III) Cadmium (ug/L) 1.5 1/25/2012 NA 2/14/2012 1.31 3/14/2012 NA 4/9/2012 NA 5/2/2012 1.33 6/18/2012 NA 7/10/2012 1.24 8/6/2012 NA 9/18/2012 NA 10/22/2012 NA 11/12/2012 1.56 12/24/2012 Fluoride (mg/L) 0.42 NA 0.34 NA 0.32 0.3 NA 0.298 Uranium 6.5 6.6 6.93 6.52 5.90 6.45 6.72 6.0 I 6.37 6.61 Nitrate + Nitrite (as N) (mg/L) 0.62 1.9 2/15/2012 1.2 3.4 2.9 2.3 7/11/2012 1.9 1.6 1.8 3.5 0.55 Uranium (ug/L) 64.6 2/21/2012 59.4 31.2 18.2 66.0 28.4 67.4 64.9 26.9 56.8 Chloroform (ug/L) 70 1900 3300 2900 2900 1700 2400 8/16/2012 970 2200 2300 4720 4020 Chloride (mg/L) 58.31 68 40 82 85 7/11/2012 78 78 2.62 52.9 2/15/2012 MW-26 (Class III) Carbon Tetrachloride (ug/L) 1/25/2012 3/14/2012 4/11/2012 <1.0 <1.0 <1.0 <1.0 5/7/2012 6/26/2012 6/19/2012 8/8/2012 9/19/2012 10/24/2012 11/15/2012 12/24/2012 <1.0 •cl.O 8/16/2012 <1.0 <1.0 <1.0 <1.0 -cl.O Field pH (S.U.) 6.74 - 8.5 6.59 2/15/2012 2/21/2012 6.72 (6.91) (6.71) 6.39 7.00 (7.01) 7.00 7/11/2012 8/16/2012 7.10 (6.80) 6.60 7.40 6.63 6.60 Dichloromethane (Methylene Chloride) (ug/L) 13 2/15/2012 24 27 20 10 16 8/16/2012 4.9 17 9.8 15.0 34.6 Nitrate + Nitrite (as N) (mg/L) 2.5 1/24/2012 17 17 18 17 16 15 17 18 16 16.2 18.5 MW-30 (Class II) Chloride (mg/L) 128 2/14/2012 126 3/14/2012 128 128 5/2/2012 124 6/18/2012 131 7/10/2012 128 8/7/2012 139 9/19/2012 130 10/23/2012 135 114 12/26/2012 Uranium (ug/L) 1.32 NS NA 7.42 8.38 7.84 6.81 7.8 7.64 8.04 7.67 7.03 Selenium (ug/L) 34 1/24/2012 33.3 35 39.5 39.1 37 38.5 38.4 41.9 45.2 36 Nitrate + Nitrite (as N) (mg/L) 21 21 22 20 21.6 21 21 21 18 23.6 TDS (mg/L) 1320 1360 1240 1400 1380 1410 1460 1400 1400 1460 I 320 1230 MW-31 (Class III) Chloride (mg/L) 143 1/24/2012 155 2/13/2012 150 3/13/2012 152 160 5/2/2012 151 Selenium (ug/l.) NS 67.8 NS NS 70.2 6/18/2012 6/29/2012 7/9/2012 161 8/6/2012 9/18/2012 172 10/22/2012 157 189 12/18/2012 NA 74 NA 76.9 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 7.05 7.04 Sulfate (mg/L) 532 539 538 517 547 497 524 57/ 56/ 545 557 Manganese (ug/L) 200 264 253 269 277 258 304 272 273 283 253 241 Thallium (ug/l) 0.5 <0.50 0.65 0.7/ 0.59 0.66 < 0.50 0.57 0.61 0.54 0.517 0.554 MW-35 (Class II) Gross Alpha minus Rn & U (pCi/L) 3.75 1/24/2012 6.5 2/14/2012 4.1 3/13/2012 6.2 4/10/2012 4.1 5/2/2012 4.5 6/19/2012 4.9 7/10/2012 3.5 8/8/2012 4.2 9/19/2012 5.4 10/23/2012 4.31 11/13/2012 4.23 12/18/2012 Selenium (ug/L) 12.5 NA 19.7 NA NA 11.4 7.0 15.9 18.8 19.0 15.4 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 Required Semi-Annual Sampling Wells MW-01 (Class II) Tetrahydrofuran (ug/L Manganese (ug/L) Field pH (S.U.) Sulfate (mg/L) 284 I 1.5 6.77 - 8.5 818 NS NA NA NS NA NA NS NA NS NA NA NA 5/1/2012 176 10.3 7.19 654 NS NA NS NA NA NS NA NA NS NA NA NA NS NA NA 11/27/2012 3/5 21.8 6.98 846 NS Selenium (ug/L) 37 43.1 52.8 NA 5/./ NA NA 58.9 Field pH (S.U.) 6.5 - 8.5 6.63 NA 6.99 NA NA 6.55 MW-03 (Class III) Sulfate (mg/L) 3663 NS NA 2/29/2012 NA NS NA NS NA 5/14/2012 3140 7/18/2012 NA NS NS NA 11/28/2012 2340 NS Nitrate + Nitrite (as N) (mg/L) 0.73 NA NA 0.4 NA NA NA NA 0.419 Fluoride (Mg/L) 0.08 NA 0.86 1.04 NA 0.96 NA 1.26 Field pH (S.U.) 6.5 - 8.5 NA 6.46 NA NA NA NA 6.35 MW-03A (Class III) Sulfate (mg/L) 3640 3020 3220 NA 3700 NA NA 2780 Nitrate + Nitrite (as N) (mg/L) 1.3 NS NA 3/1/2012 NA NS NA NS NA 5/15/2012 1.1 NS 7/19/2012 NA NS NA NS NA 11/29/2012 1.31 NS TDS (mg/L) 5805 NA 5690 5730 NA 5720 NA NA 5610 Selenium (ug/L) 89 65.; NA NA 85.1 NA 99.3 NA NA NA /// MW-05 (Class II) Uranium (ug/L) 7.5 NS NA 2/28/2012 18.6 NS NA NS NA 5/9/2012 1.23 NS 7/16/2012 0 75 NS NS NA NS NA 11/27/2012 0.402 NS MW-12 (Class III) Field pH (S.U.) 6.5 - 8.5 NS NA 2/29/2012 6.81 NS NA NS NA 5/10/2012 6.91 7/17/2012 0.48 NS NS NA NS NA 11/27/2012 6.54 NS MW-15 (Class III) Selenium (ug/L) 128.7 Field pH (S.U.) 6.62-NS 2/22/2012 6.84 NS NA NA NS NA NA 5/9/2012 /52 6.63 NA 7/17/2012 120 7.05 NS NA NS NA NA NS NA NA 11/14/2012 6.86 NS Ql 2012 Results Q2 2012 Results Q3 2012 Results Q4 2012 Results Monitoring Well (Water Class) Constituent Exceeding GWCL GWCL in Current GWDP January 2012 Monthly Sample Date January 2012 Monthly Result Ql 2012 Sample Date Ql 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 Required Semi-Annual Sampling Wells, continued MW-18 (Class III) Thallium (ug/l) Sulfate (mg/L) Field pH (S.U.) TDS (mg/L) 1.95 1938.9 6.25-8.5 3198.77 NS NA NA NA 2/27/2012 3.63 1920 6.6 3230 NS NA NA NA NS NA NA 4/30/2012 3.51 1790 6.59 3280 NS NA NA 7/18/2012 3.73 1900 6.64 3220 NS NA NA NS NA NA NS NA NA NA 11/26/2012 3.2 1210 6.51 3160 NS Field pH (S.U.) 6.78-8.5 6.83 7.21 NA NA 6.71 MW-19 (Class III) Gross Alpha minus Rn & U (pCi/L) 2.36 NS NA 2/28/2012 NA NS NA NS NA 5/16/2012 0.9 NS NA 7/19/2012 NS NS NS NA 12/13/2012 4.86 Nitrate + Nitrite (as N) (mg/L) 2.83 3.9 NA 3.7 NA NA NA NA 3.96 NS MW-23 (Class III) Field pH (S.U.) 6.5 - 8.5 NS 2/20/2012 NS 5/16/2012 6.74 NS NA 7/17/2012 7.10 NS NA NS NA NS NA 12/5/2012 6.61 NS Cadmium (ug/L) 2.5 NA 2.25 NA NA 2.01 NA 4.7 NA NA NA 1.35 MW-24 (Class III) Fluoride (Mg/L) 0.36 NA NA NA NA 0.14 NA NA NA 0.558 Thallium (ug/L) NS 2/23/2012 0.96 NS NS 5/10/2012 0.74 NS 7/18/2012 1.36 NS NS NA NS 11/29/2012 0.666 Field pH (S.U.) 6.5 - 8.5 NA 6.03 NA NA 6.21 6.45 NA 6.01 NS Nitrate + Nitrite (as N) (mg/L) 5.6 NA NA NA 6.2 NA 6.7 NA NA 6.9 MW-27 (Class III) Chloride (mg/L) 38 45 46 47 NA 44.2 Sulfate (mg/L) 462 NS 2/28/2012 NS NS 5/1/2012 NS NA 7/16/2012 453 NS NA NS NS NA 11/13/2012 451 TDS (mg/L) 1075 NA 1140 NA NA 1170 NA 1150 NA NA NA 1070 Gross Alpha minus Rn & U (pCi/L) NA 2.3 NA NA 0.8 NA 1.2 NA NA NA NS Chloride (mg/L) 105 NA 109 NA NA 114 NA 7/16/2012 105 NA NA NA 115 Cadmium (ug/L) 5.2 NA N \ 3.85 4.37 Uranium (ug/L) 4.9 NA NA NA NA 3.44 NA NS NA NA NA NA MW-28 (Class III) Vanadium (ug/L) <0 NS NA 2/28/2012 NA NS NA NS NA 5/8/2012 <15.0 NS NS NS NS NS 11/14/2012 <15.0 Manganese (ug/L) 1837 NA NA NA NA 1850 NA 8/1/2012 1660 NA NA NA 1680 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 5.98 NS Manganese (ug/L) 5624 NA NA NA NA 6140 NA 8/1/2012 5190 NA NA NA 5040 MW-29 (Class III) TDS (mg/L) 4400 NA NA NA NA 4600 NA /1/2012 4420 N \ NA 4430 NS 2/22/2012 NS NS 5/8/2012 NS Field pH (S.U.) 6.46 - 8.5 7.12 6.47 7/16/2012 8/1/2012 6.68 (6.45) NS NS NS 11/14/2012 NA 6.48 MW-32 (Class III) Gross Alpha minus Rn & U (pCi/L) 3.33 NA 2.4 NA NA NA 2.97 NS 2/21/2012 NS NS 4/30/2012 NS 7/9/2012 NS NS NS 11/6/2012 Field pH (S.U.) 6.4 - 8.5 NA 6.57 NA NA 6.40 NA 6.72 NA NA NA 6.23 NS 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 Third Quarter 2014 under the August 24.2012 GWDP Ql 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 January 2013 Monthly Result Ql 2013 Sample Date Ql 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 Sample Frequency Required Quarterly Sampling Wells MW-11 (Class II) Manganese (ug/L) 131.29 1/23/2013 115 2/20/2013 139 3/20/2013 164 4/16/2013 181 5/14/2013 144 6/25/2013 135 7/10/2013 138 8/20/2013 158 9/18/2013 134 10/22/2013 129 11/19/2013 152 12/18/2013 196 Quarterly MW-14 (Class 111) Field pH (S.U.) 6.5 • 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 9/19/2013 6.48 10/22/2013 6.77 11/20/2013 6.51 12/18/2013 6.74 Quarterly 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 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 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 6.5 5.97 5.39 5.56 6.22 6.42 5.99 5.94 7.13 NA Quarterly Quarterly Quarterly Quarterly Nitrate + Nitrite (as N) (mg/L) 0.62 1.66 1.38 1.61 1.73 2.01 3.042.11* 1.98 1.77 3.60 4.10 1.38 2.56 Uranium (ug/L) 41.1 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 Chloride (mg/L) 58.31 63.5 77 73.6 70.4 63.1 87.8 77.9* 72.1 70.8 77.3 63.8 62.3 65.7 MW-26 (Class III) Carbon Tetrachloride (ug/L) 1/24/2013 2/20/2013 3/20/2013 4/17/2013 5/23/2013 NA 3.15 NA NA <1.0 6/5/2013 6/25/2013 7/11/2013 8/20/2013 9/18/2013 10/23/2013 11/20/2013 12/18/2013 <1.0 <1.0 <1.0 NA Field pH (S.U.) 6.74 - 8.5 6.51 6.71 6.70 6.96 7,31 6.85 6.43 6.71 6.82 6.83 6.93 Dichloromethane (Methylene Chloride) 6.49 5.53 8.31 10.2 4.07 52.4* [12.11 14.6 42.4 29.8 7.64 7.48 Quarterly Quarterly Quarterly Quarterly Quarterly Quarterly Quarterly MW-30 (Class II) Nitrate + Nitrite (as N) (mg/L) 2.5 19.2 21.4 14.3 16.8 18.8 16.1 16.4 16.9 19.7 19.5 20.7 Chloride (mg/L) 128 1/23/2013 128 2/26/2013 129 3/20/2013 126 4/17/2013 I 17 5/15/2013 119 6/25/2013 127 7/10/2013 130 8/20/2013 126 9/18/2013 131 10/22/2013 128 11/20/2013 124 12/18/2013 134 Uranium (ug/L) 8.32 8.36 6.85 7.08 6.3 I 8.22 7.48 7.07 7.00 6.91 8.57 Selenium (ug/L) 37.2 42.3 39 37.3 39.4 36.5 36.3 35.2 39.5 36.6 35.1 Quarterly Quarterly Quarterly Quarterly Nitrate + Nitrite (as N) (mg/l.) 22.8 19.3 19.1 18.8 23.8 20.0 21.7 16.0 21.2 21.2 23.9 24.2 MW-31 (Class III) TDS (mg/L) 1320 1270 1390 1420 1260 1540 1380 1510 1440 1500 1460 1320 1500 Chloride (mg/L) 143 1/22/2013 176 2/19/2013 174 3/19/2013 168 4/16/2013 171 169 6/24/2013 179 7/9/2013 182 8/19/2013 183 9/17/2013 10/23/2013 188 11/18/2013 174 12/17/2013 203 Selenium (ug/L) 71 NS 74.1 81.8 72.9 75.9 73.7 75.7 73.2 72.6 80.7 74.5 79.8 Field pH (S.U.) 6.5 - 8.5 6.94 7.32 7 2,8 6.37 7.92 7.10 6.98 7.36 7.06 7.35 6.99 7.23 Sulfate (mg/L) 532 611 644 611 668 630 659 659 656 666 637 609 656 Quarterly Quarterly Quarterly Quarterly Quarterly Quarterly Manganese (ug/L) 200 247 272 246 243 250 262 257 240 251 260 Thallium (ug/l) 0.5 0.505 0.715 0.946 <0.5 <0.5 <0.5 <0.5 MW-35 (Class II) Gross Alpha minus Rn & U(pCi/L) 3.75 1/23/2013 6.62 2/26/2013 5.09 9.51 4/17/2013 4.75 5/13/2013 4.92 6/24/2013 3.24 7/9/2013 5.70 8/19/2013 3.92 9/17/2013 5./0 10/23/2013 3.73 11/19/2013 5.39 12/17/2013 Selenium (ug/L) 12.5 11.0 10.8 22.6 11.8 16.1 13.6 <5 <5 19.8 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 Quarterly Quarterly Quarterly Quarterly Quarterly Required Semi-Annual Sampling Wells MW-01 (Class II) Manganese (ug/L) Tetrahydrofuran (ug/L) Field pH (S.U.) Sulfate (mg/L) 289 11.5 6.77 - 8.5 838 NS NA NA 3/12/2013 173 12.6 6.77 NS NA NA NA NS NA NA NA 5/21/2013 127 3.26 7.57 839 NS NA NA NA 7/23/2013 83.9 1.86 7.04 911 NS NA NA NA NS NA NA NA NS NA NA 12/4/2013 5.51 7.04 930 NS NA Semi-Annually Semi-Annually Semi-Annually Semi-Annually Selenium (ug/L) 37 NA 51.8 NA NA 46.3 52.0 32.8 NA MW-03 (Class III) Field pH (S.U.) 6.5 - 8.5 NA 6.20 NA NA 7.14 NA 6.46 6.78 NA Sulfate (mg/L) 3663 NS 3/12/2013 NS NS 5/22/2013 2180 NS 7/18/2013 NS NA NS NA NS NA 12/11/2013 3760 NS Nitrate + Nitrite (as N) (mg/L) 0.73 N \ NA 0.456 NA 1.21 NA Fluoride (Mg/L) 0.68 0.902 0.994 1.18 NA NA 1.28 Semi-Annually Semi-Annually Semi-Annually Semi-Annually Semi-Annually Field pH (S.U.) 6.5-8.5 6.84 NA 7.10 NA 6.50 NA NA NA 6.98 NA MW-03A (Class III) Sulfate (mg/L) 3640 NA 3480 NA NA 3120 NA 3670 3360 NA Nitrate + Nitrite (as N) (mg/L) 1.3 NS 3/13/2013 1.22 NS NS NA 5/23/2013 NS NA 7/19/2013 1.09 NS NA NS NA NS NA 12/11/2013 /.52 TDS (mg/L) 5805 NA 5750 NA 6020 NA 5860 5940 NA Selenium (ug/L) NA 88.7 NA NA 75.6 NA 79.7 NA NA 77.9 NA Semi-Annually Semi-Annually Semi-Annually Semi-Annually Semi-Annually MW-05 (Class Uranium (ug/L) 7.5 NS 36 NS NS NA 5/14/2013 1.33 NS 7/18/2013 0.574 NS NA NS NA NS NA 12/4/2013 20.1 NS Semi-Annually MW-12 (Class III) Field pH (S.U.) 6.5-8.5 NS 3/6/2013 NS NS NA 5/15/2013 7.19 NS NA 7/17/2013 6.60 NS NA NS NA NS NA 12/9/2013 6.69 NS Semi-Annually MW-15 (Class III) Selenium (ug/L) 128.7 Field pH (S.U.) 6.62 - 8.5 NS NA 3/5/2013 137 6.75 NS NA NA NS NA NA 5/15/2013 120 7.27 NS NA NA 7/18/2013 100 6.68 NS NA NA NS NA NA NS NA 11/20/2013 106 6.61 NS NA Semi-Annually Semi-Annually Ql 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 Ql 2013 Sample Date Ql 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 Sample Frequency Required Semi-Annual Sampling Wells, continued MW-18 (Class III) Thallium (ug/l) Sulfate (mg/L) Field pH (S.U.) TDS (mg/L) 1.95 1938.9 6.25-8.5 3198.77 NS NA NA 2/25/2013 3.26 1270 3359 NS NA NA NA NS NA NA 5/20/2013 2.81 1860 6.97 3160 NS NA NA NA 7/15/2013 3.32 1860 6.45 3170 NS NA NA NA NS NA NA NA NS NA NA 12/3/2013 3.06 2000 o ;s 3240 NS NA NA NA Semi-Annually Semi-Annually Semi-Annually Semi-Annually Field pH (S.U.) 6.78-8.5 NA 6.50 NA 7.16 NA 6.91 NA NA NA 6.58 MW-19 (Class III) Gross Alpha minus Rn & U (pCi/L) 2.36 NS 3/13/2013 NS NA NS 5/20/2013 NS 7/15/2013 cl.00 NS NS NS <1.00 NS Nitrate + Nitrite (as N) (mg/L) 2.83 NA 3.61 NA NA 4.21 NA 3.66 NA NA NA 3.79 NA NA NA Semi-Annually Semi-Annually Semi-Annually MW-23 (Class III) Field pH (S.U.) 6.5 - 8.5 NS NA 3/11/2013 6.37 NS 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 Semi-Annually Cadmium (ug/L) 2.5 2.0 NA NA 1.32 6.72 NA NA MW-24 (Class III) Fluoride (Mg/L) 0.36 0.355 NA 0.211 0 28 NA 0.310 Thallium (ug/L) NS NA 3/13/2013 0.88 NS NS 5/22/2013 0.618 NS NA 7/19/2013 1.64 NS NS NS NA 12/12/2013 0.707 NS Field pH (S.U.) 6.5 - 8.5 6.29 5.80 NA 6.08 NA NA Semi-Annually Semi-Annually Semi-Annually Semi-Annually Nitrate + Nitrite (as N) (mg/L) 5.6 7.94 NA NA 7.99 6.97 NA NA NA 7.89 MW-27 (Class III) Chloride (mg/L) 38 NA 50.3 44.3 NA 44.2 NA NA 45.0 Sulfate (mg/L) 462 NS NA 2/25/2013 431 NS NS NA 5/21/2013 497 NS NA 7/17/2013 NA NS NA NS NA NS NA 12/4/2013 NS TDS (mg/L) 1075 NA 1140 NA NA 1110 NA 1110 NA NA 1100 Gross Alpha minus Rn & U (pCi/L) cl.O NA NA 1.57 <] .00 NA 1.28 NA NA NA Semi-Annually Semi-Annually Semi-Annually Semi-Annually Semi-Annually Chloride (mg/L) 105 110 NA NA 102 107 NA NA 109 Cadmium (ug/L) 5.2 NA NA NA NA NA NA 4.74 MW-28 (Class III) Uranium (ug/L) 4.9 NA NA NA NA 3.58 NA NA NA NA 3.34 Vanadium (ug/L) 30 NS 3/5/2013 NA NS NS 5/15/2013 cl.5.0 NS 7/17/2013 NA NS NS NS NA 12/4/2013 <15.0 NS Manganese (ug/L) 1837 1680 NA NA 1730 1650 NA 1530 Field pH (S.U.) 6.1 -8.5 6.99 NA NA 6.63 5.97 NA 6.10 NA NA Semi-Annually Semi-Annually Semi-Annually Semi-Annually Semi-Annually Semi-Annually Manganese (ug/L) 5624 NA 5340 NA NA 5140 NA 5140 NA NA NA 5320 MW-29 (Class III) TDS (mg/L) 4400 4599 NA NA 4340 4270 NA 4370 NS 3/6/2013 NS NS 5/23/2013 NS 7/17/2013 NS NS NS 11/20/2013 NS Field pH (S.U.) 6.46 - 8.5 NA 6.36 6.88 NA 6.37 NA NA 6.35 NA Semi-Annually Semi-Annually Semi-Annually MW-32 (Class III) Gross Alpha minus Rn i U (pCi/L) 3.33 NA 5.92 NA 3.72 N \ NA NA NA NS 2/19/2013 NS NS 5/13/2013 NS 7/9/2013 NS NS NS 11/18/2013 NS Field pH (S.U.) 6.4 - 8.5 NA 6.52 NA NA 7.10 6.39 NA NA 6.29 NA Semi-Annually Semi-Annually Notes: GWCL values are taken from August 24, 2012 version of GWDP. NS = Not Required and Not Sampled NR = Required and Not Reported NA = Not Applicable Exceedances are shown in yellow Values in () parentheses are the field pH measurements for the resampled analyses. * Data are reported from the 6/5/13 chlorofrm program sample. This constituent was removed from accelerated monitoring pursuant to the DRC letter dated November 14, 2013. The constituent exceeded the GWCL in the 4th quarter sample and will be sampled monthly beginning on or before March 2014. Pursuant to the RC letter of November 14, 2013, these constituents will no longer be monitored on an accelerated schedule. These constituents will be dropped from this report after this quarter Table 1 - GWCL Exceedances for Third Quarter 2014 under the August 24, 2012 GWDP Ql 2014 Results Q2 2014 Results Q3 2014 Results Monitoring Well (Water Class) Constituent Exceeding GWCL GWCL in August 24,2012 GWDP January 2014 Monthly Sample Date January 2014 Monthly Result February 2014 Monthly Sample Date February 2014 Monthly Result Ql 2014 Sample Date Ql 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 Sample Frequency Required Quarterly Sampling Wells MW-11 (Class II) Manganese (ug/L) 131.29 1/8/2014 2/24/2014 163 3/11/2014 134 4/25/2014 136 5/14/2014 128 6/3/2014 166 7/29/2014 139 8/20/2014 139 9/8/2014 74.0 Quarterly MW-14 (Class III) Field pH (S.U.) 6.5 - 8.5 1/8/2014 6.60 2/24/2014 6.16 3/11/2014 6.33 4/23/2014 6.84 5/13/2014 6.60 6/3/2014 7.63 7/28/2014 6.44 8/20/2014 7.07 9/2/2014 6.41 Quarterly Field pH (S.U.) 6.5 - 8.5 6.37 6.10 6.27 7.18 6.80 6.74 6.36 7.17 6.50 MW-25 (Class III) Cadmium (ug/L) 1.5 1/7/2014 1.39 2/13/2014 1.29 3/10/2014 1.29 4/28/2014 1.51 5/13/2014 1.34 6/2/2014 1.24 7/28/2014 1.30 8/18/2014 1.30 9/3/2014 1.30 Fluoride (mg/L) 0.42 0.297 0.313 0.355 0.409 0.321 0.328 0.3 0.3 Uranium 6.5 NA 5.83 6.26 10.6 7.43 6.07 5.9 Quarterly Quarterly Quarterly Quarterly Nitrate + Nitrite (as N) (mg/L) 0.62 2.42 2.12 1.30 1.20 1.64 1.42 2.0 1.00 1.10 Uranium (ug/L) 81.7 72.2 51.8 96.0 90.6 75.0 86.5 74.4 48.4 Chloroform (ug/L) 70 1580 2810 2800 1310 1580 1450 2330 2200 1580 Chloride (mg/L) 58.31 69.7 70.4 61.0 62.1 61.0 63.2 80.0 59.0 68.0 MW-26 (Class III) Carbon Tetrachloride (ug/L) 1/8/2014 2/24/2014 3/12/2014 4/30/2014 5/14/2014 6/5/2014 7/29/2014 8/20/2014 9/4/2014 NA NA 6.86 NA <1.0 <1.0 <1.0 <1.0 <1.0 Field pH (S.U.) 6.74-8.5 6.78 d.50 7.19 7.13 6.78 6.60 7.28 6.67 Dichloromethane (Methylene Chloride) (ug/L) 6.52 25.8 15.5 5.54 10.2 6.73 9.6 43.3 10.9 Quarterly Quarterly Quarterly Quarterly Quarterly Quarterly Quarterly MW-30 (Class II) Nitrate + Nitrite (as N) (mg/L) 2.5 20.3 18.4 21.3 18.3 17.9 19.4 15.6 13.8 16.8 Chloride (mg/L) 128 1/8/2014 131 2/25/2014 135 3/11/2014 144 4/23/2014 154 5/14/2014 6/3/2014 128 7/29/2014 140 8/20/2014 139 9/9/2014 136 Uranium (ug/L) 8.32 7.84 6.84 9.82 7.35 7.40 7.60 7.70 Selenium (ug/L) 34 35.6 35.8 38.0 32.8 37.0 35.4 42.9 48.5 53.6 Quarterly Quarterly Quarterly Quarterly Nitrate + Nitrite (as N) (mg/L) 24.0 20.6 26.2 19.1 23.3 23.1 19.0 15.2 18.9 TDS (mg/L) 1320 /5/0 1460 1490 1440 1510 1520 1400 1410 1460 MW-31 (Class III) Chloride (mg/L) 143 1/7/2014 194 2/17/2014 197 230 4/28/2014 230 5/13/2014 200 6/2/2014 173 7/28/2014 200 8/18/2014 210 9/3/2014 210 Selenium (ug/L) 71 74.4 75.8 77.2 85.4 74.5 69.4 77.9 82.8 81.5 Field pH (S.U.) 6.5 - 8.5 6.45 7.45 8.23 6.88 7.60 6.94 Sulfate (mg/L) 532 558 480 681 527 639 555 600 620 560 Quarterly Quarterly Quarterly Quarterly Quarterly Quarterly Manganese (ug/L) 200 252 247 204 249 202 212 Thallium (ug/l) 0.5 0.535 <0.5 <0.5 0.582 0.521 <0.5 <0.5 <0.5 0.6 MW-35 (Class II) Gross Alpha minus Rn i U (pCi/L) 1/8/2014 4.12 2/11/2014 3.98 2/26/14 4.33 4/25/2014 2.95 5/14/2014 6/4/2014 3.36 7/29/2014 3.0') 8/20/2014 4.70 9/3/2014 3.93 Selenium (ug/L) 12 5 8.95 14.1 18.6 17.0 13.9 13.2 28.9 31.4 Uranium (ug/L) 7.5 20.8 20.6 21.5 30.6 26.9 21.9 26.5 20.3 23.6 Quarterly Quarterly Quarterly Quarterly Quarterly Required Semi-Annual Sampling Wells MW-01 (Class II) Manganese (ug/L) Tetrahydrofuran (ug/L) Field pH (S.U.) Sulfate (mg/L) 289 I 1.5 6.77 - 8.5 838 NS NA NA NA NS NA 2/20/2014 76.8 3.25 830 NS NA NA NS NA 5/28/2014 82.3 3.39 909 NS NA NA NS N \ 9/10/2014 80.0 <1.0 6.75 Semi-Annually Semi-Annually Semi-Annually Semi-Annually Selenium (ug/L) 37 NA NA 37.0 NA NA 69.5 NA NA 94.0 MW-03 (Class III) Field pH (S.U.) 6.5 - 8.5 NA NA 6.23 NA NA 6.56 N \ NA 6.13 Sulfate (mg/L) 3663 NS NS 2/26/2014 NS NS 5/30/2014 3460 NS NS 9/16/2014 3120 Nitrate + Nitrite (as N) (mg/L) 0.73 NA NA NA NA 0.573 0.6 Fluoride (Mg/I.) 0.68 0.771 1.02 1.0 Semi-Annually Semi-Annually Semi-Annually Semi-Annually Semi-Annually Field pH (S.U.) 6.5 - 8.5 NA 6.58 6.60 NA 6.40 MW-03A (Class III) Sulfate (mg/L) 3640 NA NA 3100 NA NA 3830 NA NA 3350 Nitrate + Nitrite (as N) (mg/L) 1.3 NS NS 3/5/2014 0.849 NS NS 5/30/2014 0.97 NS NA NS 9/17/2014 1.0 TDS (mg/L) 5805 NA NA 5600 NA NA 5790 NA NA 5460 Selenium (ug/L) NA NA 92.1 NA NA 104 NA NA 129 Semi-Annually Semi-Annually Semi-Annually Semi-Annually Semi-Annually MW-05 (Class II) Uranium (ug/L) 7.5 NS NS 2/12/2014 22.0 NS NS 6/4/2014 !.42 NS 9/11/2014 0.90 Semi-Annually MW-12 (Class HI) Field pH (S.U.) 6.5 - 8.5 NS NS 2/12/2014 6.13 NS 6/4/2014 7.10 NS NA NS NA 9/16/2014 6.47 Semi-Annually MW-15 (Class III) Selenium (ug/L) 128.7 Field pH (S.U.) 6.62 - 8.5 NS NA NA NS NA 2/25/2014 6.51 NS NA NA 6/4/2014 105 6.91 NS NA NA NS NA 9/2/2014 273 6.38 Semi-Annually Semi-Annually Ql 2014 Results Q2 2014 Results Q3 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 Ql 2014 Sample Date Ql 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 Q2 2014 Sample Date Q2 2014 Result Sample Frequency Required Semi-Annual Sampling Wells, continued MW-18 (Class III) Thallium (ug/l) Sulfate (mg/L) Field pH (S.U.) TDS (mg/L) 1.95 1938.9 6.25-8.5 3198.77 NS NA NA NS NA NA 2.77 1650 6.16 3080 NS NA NA NS NA NA 5/27/2014 2.42 2020 7.04 3260 NA NA NS NA NA 9/9/2014 2.7 1760 6.40 3180 Semi-Annually Semi-Annually Semi-Annually Semi-Annually Field pH (S.U.) 6.78-8.5 NA NA 6.29 NA NA 7.38 NA NA 6.46 MW-19 (Class III) Gross Alpha minus Rn & U (pCi/L) 2.36 NS NS NA 2/18/2014 <1.0 NS NS 5/27/2014 2.24 NS NS 9/11/2014 <1.0 Nitrate + Nitrite (as N) (mg/L) 2.83 NA NA 3.82 NA NA 3.68 NA NA 0.4 Semi-Annually Semi-Annually Semi-Annually MW-23 (Class 111) Field pH (S.U.) 6.5 - 8.5 NS NA NS NA 3/5/2014 6.52 NS NA NS NA 6/1 1/2014 6.67 NS NA NS NA 9/4/2014 6.56 Semi-Annually Cadmium (ug/L) 2.5 5.92 NA 2.91 NA MW-24 (Class III) Fluoride (mg/L) 0.36 0.234 0.337 NA 0.4 Thallium (ug/L) NS NA NS NA 3/6/2014 /.85 NS NS NA 5/30/2014 1.23 NS NA NS NA 9/17/2014 0.6 Field pH (S.U.) 6.5 - 8.5 NA NA 5.89 6.07 NA 5.09 Semi-Annually Semi-Annually Semi-Annually Semi-Annually Nitrate + Nitrite (as N) (mg/L) 5.6 7.98 NA 7.35 NA 6.30 MW-27 (Class III) Chloride (mg/L) i8 NA NA 47.0 NA 45.9 NA 46.0 Sulfate (mg/L) 462 NS NA NS NA 2/25/2014 NS NA NS NA 5/28/2014 484 NS NA NS NA 9/8/2014 TDS (mg/L) 1075 NA 1040 NA NA 1040 NA 1020 Gross Alpha minus Rn i U (pCi/L) NA 2.33 1.16 Semi-Annually Semi-Annually Semi-Annually Semi-Annually Semi-Annually Chloride (mg/L) 105 113 NA 114 NA 112 Cadmium (ug/L) 5.2 NA NA NA 5.41 NA MW-28 (Class HI) Uranium (ug/L) 4.9 NA NA NA NA 61.3 NA 10.6 Vanadium (ug/L) 30 NS NA NS NA 2/20/2014 NS NS NA 6/18/2014 109 NS NS NA 9/16/2014 Semi-Annually Manganese (ug/L) 1837 1650 NA 1750 NA NA IS 5 1610 Semi-Annually Semi-Annually Semi-Annually Semi-Annually Field pH (S.U.) 6.1-8.5 NA NA 6.01 6.78 NA 5.79 Semi-Annually Manganese (ug/L) 5624 NA 5170 NA NA 4700 NA 4550 Semi-Annually MW-29 (Class III) TDS (mg/L) 4400 4500 NA 4200 4280 NS NS 2/25/2014 NS NS 6/3/2014 NS NS 9/10/2014 Semi-Annually Field pH (S.U.) 6.46 - 8.5 NA NA 6.78 NA NA NA NA 6.10 Semi-Annually MW-32 (Class III) Gross Alpha minus Rn I U (pCi/L) 3.33 NA .94 NA NA 4.35 NA 3.69 Semi-Annually NS NS 2/11/2014 NS NS 5/27/2014 NS NS 9/2/2014 Field pH (S.U.) 6.4 - 8.5 6.15 NA NA 6./7 Semi-Annually Notes: GWCL values are taken from August 24. 2012 version of GWDP. NS = Not Required and Not Sampled NR = Required and Not Reported NA = Not Applicable Exceedances are shown in yellow Values in () parentheses are the field pH measurements for the resampled analyses. * Data are reported from the 6/5/13 chlorofrm program sample. Pursuant to the DRC letter of September 15, 2014, these constituents will no longer monitored on an accelerated schedule. These constituents will be dropped from this after this quarter. rbe """"