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Home My WebLink AboutDRC-2012-001730 - 0901a068802f9f20RC-201^00 1730 August 6, 2012 VIA PDF AND FEDERAL EXPRESS Mr Rusty Lundberg Director of the Utah Division of Radiation Control State of Utah Department of Environmental Quality 195 North 1950 West P O Box 144850 Salt Lake City, UT 84116-4850 Re: State of Utah Ground Water Discharge Permit No. UGW370004 White Mesa Uranium Mill - Removal of Certain Groundwater Monitoring Parameters from Accelerated Monitoring Status Dear Mr Lundberg A number of groundwater monitonng constituents have been placed on accelerated monitoring status under Part IG 1 of the Denison Mines (USA) Corp Ground Water Discharge Permit No UGW370004 ("GWDP") Part IG 1 provides that such accelerated monitoring shall continue until compliance status of the facility can be determined by the Director Based on the accelerated monitoring resuhs to date, Denison requests the Director make a determination that accelerated momtonng cease at this time for Total Dissolved Solids ("TDS") in MW-26, and field pH in MW-25, MW-30 and MW-31 for the reasons stated below • MW-26 TDS results have been below the Groundwater Compliance Limit ("GWCL") specified in the GWDP for fourteen consecutive sampling events since Q2 2011 Per the UDEQ letters of May 30, 2006, October 31, 2011 and April 25, 2012, eight consecutive sample results below the GWCL are needed for the discontinuance of accelerated monitonng • MW-25 field pH results have been within the GWCL limits specified in the GWDP for ten sampling events since September 2011 Per the UDEQ letters of May 30, 2006, October 31, 2011 and Apnl 25, 2012, eight consecutive sample results below the GWCL are needed for the discontinuance of accelerated momtonng • MW-30 and MW-31 field pH results have been withm the GWCL limits specified in the GWDP for fourteen sampling events since the start of accelerated monitoring in July 2011 Per the UDEQ letters of May 30, 2006, October 31, 2011 and Apnl 25, 2012, eight consecutive sample results below the GWCL are needed for the discontinuance of accelerated monitonng Once removed from accelerated monitonng status, these constituents, like all other constituents, would be subject to future accelerated monitoring under Part IG 1 of the GWDP, should circumstances warrant To assist in your evaluation of the foregoing, we have included a summary of the accelerated sampling results since the initial sample result that tnggered accelerated monitonng 22^ Jrior Bi^dltvdiu ^^ui't. Letter to Rusty Lundberg Removal of Parameters from Accelerated Monitonng August 6, 2012 Page 2 WelllD Constituent GWCL (ug/L) Sample Date Sample Result (ug/L) MW-26 TDS 3284 19 2nd Quarter 2011* 3310 May 2011 3140 June 2011 3020 July 2011 3270 3'''Quarter 2011 3190 September 2011 3200 4"* Quarter 2011 3190 November 2011 3220 December 2011 3160 January 2012 3250 1'' Quarter 2012 3150 March 2012 3220 Apnl 2012 3140 2"^* Quarter 2012 3240 June 2012 3200 MW-25 Field pH 65-85 3'^ Quarter 2011* 6 42 September 2011 6 54 4*^ Quarter 2011 6 60 November 2011 651 December 2011 6 87 January 2012 6 63 r' Quarter 2012 6 83 March 2012 6 55 Apnl 2012 6 58 2"^* Quarter 2012 6 73 June 2012 6 99 MW-30 Field pH 65-85 June 2011* 5 66 July 2011 6 65 3'^ Quarter 2011 6 61 September 2011 6 80 4* Quarter 2011 6 96 (resample 6 73) November 2011 6 83 December 2011 7 14 January 2012 6 52 V Quarter 2012 7 12 March 2012 6 86 Apnl 2012 7 66 2"" Quarter 2012 6 95 June 2012 7 10 MW-31 Field pH 65-85 June 2011* 6 16 July 2011 6 64 3''' Quarter 2011 6 67 September 2011 7 03 FlK gv hues '^.^SCL CLS C- I < -x* vvnoJ CO "FfZ_8 22'5 Union BouIcvaKi MMIL ^dl) PhD.K ^()l-97-!-2i-';) Letter to Rusty Lundberg Removal of Parameters from Accelerated Monitoring August 6, 2012 Page 3 WelllD Constituent GWCL (ug/L) Sample Date Sample Result (ug/L) 4"^ Quarter 2011 7 28 (resample 7 34) November 2011 7 01 December 2011 7 46 January 2012 6 78 V Quarter 2012 7 37 March 2012 7 13 April 2012 7 14 2"^* Quarter 2012 7 19 June 2012 7 28 (resample 7 63) *Last sample result outside of GWCL limits The analytical laboratory reports for the foregoing results up to and including March 2012 are included in the Quarterly Groundwater Monitonng Reports, all of which have been provided to DRC Copies of the analytical laboratory reports and the field sheets for the results for Apnl through June 2012 will be provided in the upcoming 2nd Quarter 2012 Groundwater Monitonng Report and are also included with this letter for your convenience It is important to note that the 2nd Quarter 2012 monitoring results included with this letter have been evaluated per the Denison QAP and the GWDP and all field and laboratory quality control parameters are acceptable The evaluations of the 2nd Quarter data will be included in the 2nd Quarter 2012 Groundwater Monitoring Report, due September 1, 2012 If you have any questions or require any further information, please contact the undersigned Yours truly, fo Ann Tischler Director, Compliance and Permitting cc David C Frydenlund Harold Roberts David Turk Katherine Weinel 2_"> ...'.TiOi Brulcv'cird Si UL'-'^(^ -.'-D-.L ^()V974-2140 EINERGY LABORATORIES www.energy)abcom Helena, MT 877-472-0711 • Billings, MT 800-735-44B9 • Casper, WYS88-235-0515 GjlletMlY 865-686-7175 • Rapid Crty, SO 888-672-1225 • College Station, TX 888-690-2218 LABORATORY ANALYTICAL REPORT Prepared by Casper, WY Branch Client Project Lab ID Client Sample ID Denison Mines USA Corp Apnl Monthly Groundwater 2012 C12040736-003 MW-26 04112012 ReportDate- 05/11/12 Collection Date 04/11 /12 07 40 DateReceived 04/13/12 Matrix. Aqueous Analyses Result Units Qualifier RL MCL/ QCL Method Analysis Date / By MAJOR IONS Chlonde 82 mg/L 1 A4500-CI B 04/26/12 13 36/lr Nitrogen, Nitrate-i-Nitnte as N 34 mg/L D 02 E353 2 04/13/12 17 00/dc PHYSICAL PROPERTIES Solids, Total Dissolved TDS @ 180 0 3140 mg/L 10 A2540C 04/13/12 14 47/ab METALS - DISSOLVED Uranium 42 2 ug/L 0 30 E200 8 04/16/12 15 00/cp RADIONUCLIDES - DISSOLVED Gross Alpha minus Rn & U 23 pCi/L E900 1 05/02/12 14 07/ep Gross Alpha minus Rn & U Precision (±) 04 pCi/L E900 1 05/02/12 14 07/ep Gross Alpha minus Rn & U MDC 02 pCi/L E900 1 05/02/12 14 07/ep VOLATILE ORGANIC COMPOUNDS Acetone ND ug/L 20 SW8260B 04/18/12 06 27/jk Benzene ND ug/L 1 0 SW8260B 04/18/12 06 27/jk Carbon tetrachlonde ND ug/L 1 0 SW8260B 04/18/12 06 27/jk Chlorofonn 2900 ug/L D 1000 SW8260B 04/18/12 03 29/jk Chloromethane ND ug/L 1 0 SW8260B 04/18/12 06 27/jk Methyl ethyl ketone ND ug/L 20 SW8260B 04/18/12 06 27/jk Methylene chlonde 20 ug/L 1 0 SW8260B 04/18/12 06 27/jk Naphthalene ND ug/L 1 0 SW8260B 04/18/12 06 27/jk Toluene ND ug/L 1 0 SW8260B 04/18/12 06 27/jk Xylenes, Total ND ug/L 1 0 SW8260B 04/18/12 06 27/jk Surr 1,2-Dichlorobenzene-d4 104 %REC 80-120 SW8260B 04/18/12 06 27/jk Surr Dibromofluoromethane 53 0 %REC S 70-130 SW8260B 04/18/12 06 27/jk Surr p-Bromofluorobenzene 118 %REC 80-120 SW8260B 04/18/12 06 27/jk Surr Toluene-d8 101 %REC 80-120 SW8260B 04/18/12 06 27/jk Report Definitions RL - Analyte reporting limit QCL - Quality control limit MDC - Minimum detectable concentration S - Spike recovery outside of advisory limits MCL - Maximum contaminant level ND - Not detected at the reporting limit D - RL increased due to sample matnx Page 5 of 22 EINERGY LABORATORIES wvmenefgylabcom ABa^HsatExeeBBaea^eat^ Helena, MT 677-472-0711 • Billings, MT 800-735-4489 « Casper, WY 688-235-0515 Gillette, WY 866-686-7175 • Rapid City, SD 888-672-1225 • College Station, TX 888-690-2218 Client' LABORATORY ANALYTICAL REPORT Prepared by Casper, WY Branch Denison Mines USA Corp Revised Date 07/31/12 ReportDate- 06/06/12 Project Semi-Annual Groundwater 2012 Lab ID Cl 2050272-003 Client Sample ID: MW-26_05072012 Collection Date 05/07/12 09 45 DateReceived 05/08/12 Matrix Aqueous Analyses Result Units Qualifier RL MCL/ QCL Method Analysis Date / By MAJOR IONS Cartxsnate as C03 ND mg/L 1 A2320 B 05/08/12 17 36/jba Bicarbonate as HC03 398 mg/L 1 A2320 B 05/08/12 17 36/jba Calcium 449 mg/L 05 E200 7 05/10/12 21 22/sf Chlonde 74 mg/L 1 A4500-CI B 05/30/12 09 09/Ir Fluonde 0 54 mg/L 0 10 A4500-F C 05/09/12 11 47/jba Magnesium 153 mg/L 05 E200 7 05/10/12 21 22/sf Nitrogen, Ammonia as N 0 14 mg/L 0 05 A4500-NH3 G 05/11/12 14 40/dc Nitrogen, Nrtrate-KNitnte as N 29 mg/L D 02 E353 2 05/08/12 17 41 / dc Potassium 11 3 mg/L 05 E200 7 05/11/12 19 49/sf Sodium 195 mg/L 05 E200 7 05/11/12 19 49/sf Sulfate 1930 mg/L D 50 A4500-SO4 E 05/10/12 12 46/lr PHYSICAL PROPERTIES Solids, Total Dissolved TDS @ 180 C 3240 mg/L 10 A2540 C 05/09/12 14 08/ab METALS - DISSOLVED Arsenic ND ug/L 50 E200 8 05/10/12 13 10/smm Beryllium ND ug/L 0 50 E200 8 05/10/12 13 10/smm Cadmium ND ug/L 0 50 E200 8 05/10/12 13 10/smm Chromium ND ug/L 25 E200 8 05/10/12 13 10/smm Cobalt ND ug/L 10 E200 8 05/10/12 13 10/smm Copper ND ug/L 10 E200 8 05/10/12 13 10/smm Iron 682 ug/L 30 E200 7 05/10/12 21 22/sf Lead ND ug/L 1 0 E200 8 05/10/12 13 10/smm Manganese 1110 ug/L 10 E200 8 05/10/12 13 10/smm Mercury ND ug/L 0 50 E200 8 05/10/12 13 10/smm Molytxlenum ND ug/L 10 E200 8 05/10/12 13 10/smm Nickel ND ug/L 20 E200 8 05/10/12 13 10/smm Selenium ND ug/L 50 E200 8 05/10/12 13 10/smm Silver ND ug/L 10 E200 8 05/10/12 13 10/smm Thallium ND ug/L 0 50 E200 8 05/10/12 13 10/smm Uranium 182 ug/L 0 30 E200 8 05/10/12 13 10/smm Vanadium ND ug/L 15 E200 8 05/10/12 13 10/smm Zinc ND ug/L 10 E200 8 05/10/12 13 10/smm RADIONUCLIDES • DISSOLVED Gross Alpha minus Rn & U 31 pCi/L E900 1 05/18/12 20 05/lbb Gross Alpha minus Rn & U Precision (±) 04 pCi/L E900 1 05/18/12 20 05/lbb Gross Alpha minus Rn & U MDC 02 pCi/L E900 1 05/18/12 20 05/lbb Report Definitions RL - Analyte reporting limit QCL - Quality control limit MDC - Minimum detectable concentration MCL - Maximum contaminant level ND - Not detected at the reporting limit D - RL increased due to sample matnx Page 7 of 33 EINERGY LABORATORIES «nm.0(iersrla]).com Helena, MT 877-472-0711 • Billings, MT 800-735-4489 • Casper, WY 888-235-0515 Gillette, WY 866-686-7175 • Rapid City, SD 888-672-1225 • College Station, TX 888-690-2218 Client Project- Lab ID. LABORATORY ANALYTICAL REPORT Prepared by Casper, WY Branch Demson Mines USA Corp June Monthly Groundwater 2012 C12060935-003 Client Sample ID: MW-26_06192012 ReportDate 07/18/12 Collection Date. 06/19/121015 DateReceived: 06/22/12 Matrix: Aqueous Analyses Result Units Qualifiers RL MCL/ QCL Method Analysis Date / By MAJOR IONS Chlonde 85 mg/L 1 A4500-CI B 06/27/12 13 34/wc Nitrogen, Nitrate-i-Nitnte as N 23 mg/L 01 E353 2 06/27/12 13 10/lr PHYSICAL PROPERTIES Solids, Total Dissolved TDS @ 180 C 3200 mg/L A2540C 06/22/12 14 14/ab METALS - DISSOLVED Uranium 66 0 ug/L 03 E200 8 07/10/12 19 43/cp VOLATILE ORGANIC COMPOUNDS Acetone ND ug/L 20 SW8260B 06/28/12 23 58/jk Benzene ND ug/L 1 0 SW8260B 06/28/12 23 58/jk Cart}on tetrachlonde ND ug/L 1 0 SW8260B 06/28/12 23 58/jk Chlorofonn 2400 ug/L D 500 SW8260B 06/28/12 23 22/jk Chloromethane ND ug/L 1 0 SW8260B 06/28/12 23 58/jk Methyl ethyl ketone ND ug/L 20 SW8260B 06/28/12 23 58/jk Methylene chlonde 16 ug/L 1 0 SW8260B 06/28/12 23 58/jk Naphthalene ND ug/L 1 0 SW8260B 06/28/12 23 58/Jk Toluene ND ug/L 1 0 SW8260B 06/28/12 23 58/jk Xylenes, Total ND ug/L 1 0 SW8260B 06/28/12 23 58/jk Surr 1,2-Dichlorobenzene-d4 97 0 %REC 80-120 SW8260B 06/28/12 23 58/jk Surr Dibromofluoromethane 92 0 %REC 70-130 SW8260B 06/28/12 23 58/jk Surr p-Bromofluorot}enzene 89 0 %REC 80-120 SW8260B 06/28/12 23 58/jk Surr Toluene-d8 96 0 %REC 80-120 SW8260B 06/28/12 23 58/Jk Report Definitions RL - Analyte reporting limit QCL - Quality control limit D - RL increased due to sample matnx MCL - Maximum contaminant level ND - Not detected at the reporting limit Page 5 of 22 Mill - Groundwater Discharge Permit Groundwater Monitoring Quality Assurance Plan (QAP) Date 03/22/2010 Rev f ATTACHMENT 1 WHITE MESA URANIUM MILL FIELD DATA WORKSHEET FOR GROUND WATER Descnption of Sampling Event | A?^' ' 6-ro*Ar\^ \A^Ar ^01 a. DENiSO MINES Mi Attachment 1 See instruction Location (well name): M^AJ- Sampler Name and initials Date and Time for Purging 47*^/2.^ 1^ and Sampling (if different) Well Purging Equip Used 13 pump oij • | bailer Well Pump (if other than Bennet) P Samphng Event rMon-^^irN Cr-vA pH Buffer 7 0 7.0 Prev Well Sampled in Sampling Event Specific Conductance ^ ^ pH Buffer 4 0 ^iMHOS/ cm Well Depth(0 01 ft) | ^A^.OO Depth to Water Before Purging "7^ "7*1^ Casing Volume (V) 4" Well 3" Well (653h) (367h) Conductance (avg) pH of Water (avg) ] LSI Well Water Temp (avg) | Weather Cond Redox Potential (Eh)| 40 \ ' 3?^ Turbidity HH5 Ext'lAmb Temp "C (prior sampling event) Time I USS Gal Purged SlL Og Conductance [3.2.^7 Temp °C pH 4>.57 Redox Potential Eh (mV) [^0^ Turbidity (NTU) 3oT Time I )]hL Gal Purged SQ^-^ 53.3^ Conductance Temp °C pH I ^/' Redox Potential Eh (mV) | 'hiL^^ \ Turbidity (NTU) | H34 Time [FT Gal Purged | 52. 5i ' Conductance Temp °C 53. 33jb^ I pH I Redox Potential Eh (mV) | ^Tl Turbidity (NTU) Time rnSS" Conductance Temp °C Gal Purged | Sa-73i 32:7^ I pH I "I Redox Potential Eh (mV) \ Turbidity (NTU) White Mesa Mill Field Data Worksheet for Groundwater 1 of2 Mill - Groundwater Discharge Permit Groundwater Monitoring Quality Assurance Plan (QAP) Date 03/22/2010 Rev € OSNISO MINES j ATTACHMENT 1 WHITE MESA URANIUM MILL FIELD DATA WORKSHEET FOR GROUND WATER Attachment 1 See instruction Descnption of Sampling Event Q\A<\rt<y &-rov>yNA VA^oT^g^ ^0)0. Location (well name): /Av^ XS Sampler Name and initials "T^nn^^ ^o^\' A<V^/r)^ Date and Time for Purging B/^-A^^l^: and Sampling (if different) 7^ Well Purging Equip Used J0_ pump oi| • | bailer Well Pump (if other than Bennet) QED Sampling Event ^><r^^ g^nr>vA<0 pH Buffer 7 0 7.0 Prev Well Sampled in Sampling Event M.O MlA)-''2vl Specific Conductance ^ ^ ^ pH Buffer 4 0 [AMHOS/cm Well Depth(0 01 ft) | US,OC> Depth to Water Before Purging ^H»40 Casing Volume (V) 4" WeU 3" Well (653h) (367h) Conductance (avg) 3^2-4 pH of Water (avg) Q>7T^ Well Water Temp (avg) \Y\ ^ Weather Cond Redox Potential (Eh)| 3'7H Turbidity 'C>X> Ext'lAmb Temp "C (prior sampling event) ^ Time I i04S Gal Purged S3M Conductance Temp °C 32J2.I pH G.7'Z> Redox Potential Eh (mV) | Turbidity (NTU) 37T Time 1044 Gal Purged | 5^.3S Conductance Temp °C pH 4.73 Redox Potential Eh (mV) | 'S'77 Turbidity (NTU) Time FTO^ Gal Purged | .^3.^'^ Conductance Temp °C 3a33 I pH| L.l'^ Redox Potential Eh (mV) \ 372> Turbidity (NTU) 3^ Time Conductance Temp °C Gal Purged | 53 8i Redox Potential Eh (mV) \ 3,45 Turbidity (NTU) 377- White Mesa Mill Field Data Worksheet for Groundwater 1 of2 Mill - Groundvuater Discharge Permit Groundwater Monitoring Quality Assurance Plan (QAP) Date 6/06/2012 Rev 7 DENISO MINES Mi See instruction ATTACHMENT 1-2 WHITE MESA URANIUM MILL , FIELD DATA WORKSHEET FOR GROUNDWATER Descnption of Sampling Event | U^A^ Mon'j'Ki:^ GTOUAA V^t^Cf g.QI^ Sampler Name and initials "TZAn-cr Location (well name) | ^VJ-^^ Field Sample ID Date and Time for Purging | C»/]^/Sip]CL and Sampling (if different) Well Purging Equip Used | !fl [pump or | • | bailer Well Pump (if other than Bennet) I QUP Purging Method Used 2 casings | • |3 casings Sampling Event | Ty^»n-VhUA 6-W pH Buffer 7 0 Prev Well Sampled in Sampling Event pH Buffer 4 0 M.O specific Conductance [AMHOS/ cm Well Depth(0 01 ft) | U5 OQ Depth to Water Before Purging 73, Casing Volume (V) 4" Well 3" Well (653h) (367h) Conductance (avg) | 3SL43 Well Water Temp (avg) | 15-43 Weather Cond pH of Water (avg) 7.o^ Redox Potential (Eh) Turbidity 1, ^ Ext'l Amb Temp "C (prior sampling event) ~P7 Time 10^£> Gal Purged Conductance Temp °C pH 7.0Q. Redox Potential Eh (mV) fSGT Turbidity (NTU) Time Gal Purged Conductance Temp °C 33.45 pHpT^ 13^ Redox Potential Eh (mV) [057^ Turbidity (NTU) IS: Time I 10K7 Gal Purged | 53> 5^ Conductance Temp °C pH I V-QO Redox Potential Eh (mV) Turbidity (NTU) Time Conductance Temp °C '5^40, Gal Purged | S3 gj Redox Potential Eh (mV) | / <^ Turbidity (NTU) 331 White Mesa Mill Field Data Worksheet for Groundwater 1 of2 Mill - Groundwater Discharge Permit Groundwater Monitoring Quality Assurance Plan (QAP) Date 03/22/2010 Rev OENISO MINES ATTACHMENT 1 WHITE MESA URANIUM MILL FIELD DATA WORKSHEET FOR GROUND WATER Attachment 1 See instruction Descnption of Sampling Event AAo»^V\li^ G-co^f^ Location (well name): MV0~3O Sampler Name and initials Date and Time for Purging and Sampling (if different) 7^ Well Purging Equip Used 13 pump oi| • | bailer Well Pump (if other than Bennet) (3) Sampling Event pH Buffer 7 0 70 Prev Well Sampled in Sampling Event pH Buffer 4 0 | H.Q Specific Conductance ^ ^MHOS/ cm Well Depth(OOlft) no.o-o Depth to Water Before Purging 7^.^ Casing Volume (V) 4" Well 3" Well (653h) (367h) Conductance (avg) Well Water Temp (avg) | 14.4^ Weather Cond pH of Water (avg) Redox Potential (Eh)[_33\ Turbidity Ext'l Amb Temp "C (pnor sampling event) 7 Time \OM0 Gal Purged | 44 ^ Conductance Temp °C pH 7.C>3 Redox Potential Eh (mV) p54" Turbidity (NTU) Time IDMI Conductance Temp °C Gal Purged m4>7Q To3" pH Redox Potential Eh (mV) | 331 Turbidity (NTU) Time I )DH2^ Conductance Temp °C Gal Purged |MH.C|\ Redox Potential Eh (mV) j 330 Turbidity (NTU) Time I10M3 Conductance Temp °C 2loro Gal Purged | I PH|7 Redox Potential Eh (mV) | 313 Turbidity (NTU) White Mesa Mill Field Data Worksheet for Groundwater 1 of2 Mill - Groundwater Discharge Permit Groundwater Monitoring Quality Assurance Plan (QAP) Date 03/22/2010 Rev € OENISO MINES ATTACHMENT 1 WHITE MESA URANIUM MILL FIELD DATA WORKSHEET FOR GROUND WATER Attachment 1 if*^ See instruction Descnption of Sampling Event \ Gyx^rfer 6-f 6ur^(jl vOccfer ^C^l^T Location (well name): MVO O Sampler Name and initials Date and Time for Purgin£T7^7^T^ and Sampling (if different) Well Purging Equip Used _H_ pump oj • | bailer Well Pump (if other than Bennet) | O^X^ Sampling Event | c».r^n^*^o^^ G-VO pH Buffer 7 0 7.D Prev Well Sampled in Sampling Event pH Buffer 4 0 Specific Conductance [AMHOS/ cm Well Depth(0 01ft) HQ.QO Depth to Water Before Purging 75.*^ 5 Casing Volume (V) 4" Well 3" Well (653h) (367h) Conductance (avg) | ^2.0^0. pH of Water (avg) Well Water Temp (avg) | ]3.0\ Weather Cond Redox Potential (Eh) 0.40 Turbidity Ext'lAmb Temp "C (prior sampling event) VS Time Gal Purged 4(,.fe Conductance Temp °C 1375^T Redox Potential Eh (mV) f^ITS" Turbidity (NTU) Time Conductance Temp °C Gal Purged | ^C g7 pH Redox Potential Eh (mV) .2.HI Turbidity (NTU) Time rrtm Gal Purged [ M7.Q^ Conductance Temp °C pHE^ IS OO Redox Potential Eh (mV) [^3? Turbidity (NTU) CT Time nW Gal Purged |4 /.30 Conductance Temp °C pH[C^ T^75T" Redox Potential Eh (mV) [23^ Turbidity (NTU) White Mesa Mill Field Data Worksheet for Groundwater 1 of2 Mill.- Groundv\<ater Discharge Permit Groundwater Monitoring Quality Assurance Plan (QAP) Date 6/06/2012 Rev 7 DENISO MINES Mi ATTACHMENT 1-2 WHITE MESA URANIUM MILL FIELD DATA WORKSHEET FOR GROUNDWATER See instruction Descnption of Sampling Event ^Jv^n^ Mo/\t^l^ G*fO\*\r\()i l/0<fe<- <^^^ Sampler Name Location (well name) MV^'^O Field Sample ID and initials Date and Time for Purging ^/1^/3JC)1^ and Sampling (if different) Well Purging Equip Used & pump or | • | bailer Well Pump (if other than Bennet) Purging Method Used 13 2 casings | • |3 casings Samphng Event | Mc»r\-H^bA 6-\A^ pH Buffer 7 0 -7.0 Prev Well Sampled in Sampling Event pH Buffer 4 0 4 V Specific Conductance \ (xMHOS/ cm Well Depth(OOlft) IID.OO Depth to Water Before Purging (=> Casing Volume (V) 4" Well 3" Well (653h) (367h) Conductance (avg) Well Water Temp (avg) Weather Cond pH of Water (avg) Redox Potential (Eh)| ^74 Turbidity Ext'lAmb Temp "C (prior sampling event) Time I1H4D Conductance Temp °C Gal Purged | ^^ 4^ pH Redox Potential Eh (mV) | ^ / Turbidity (NTU) Time nW Conductance Gal Purged 17^.70 aQS7 I pHl^^V Temp °C Redox Potential Eh (mV) Turbidity (NTU) Time I Conductance Temp °C Gal Purged f MH^ —] pH Redox Potential Eh (mV) | CIS^J Turbidity (NTU) Time |m43 Gal Purged { HE^l^ Conductance Temp °C D.OQ-{ I pH| 7jQ Redox Potential Eh (mV) Turbidity (NTU) White Mesa Mill Field Data Worksheet for Groundwater 1 of2 MiH - Groundwater Discharge Permit Groundwater Monitoring Quality Assurance Plan (QAP) Date 03/22/2010 Rev i DENISON MINES ATTACHMENT 1 WHITE MESA URANIUM MILL FIELD DATA WORKSHEET FOR GROUND WATER Attachment 1 See instrucuon Descnption of Sampling Event | Ap^^^ Mon-fhW Crro\\n(k XOo^-fcr SLQ/:^ Location (well name): - 31 Sampler Name and initials Date and Time for Purginj 4/^/2.^^*^ and Sampling (if different) Well Purging Equip Used ^ pump ot| • | bailer Well Pump (if other than Bennet) G^^^ Sampling Event pH Buffer 7 0 7 0 Prev Well Sampled in Sampling Event Specific Conductance ^'f^ pH Buffer 4 0 [xMHOS/ cm Well Depth(0 01 ft) Depth to Water Before Purgin Casing Volume (V) 4" Well 3" Well (653h) (367h) Conductance (avg) | \^2^ pH of Water (avg) Well Water Temp (avg) Weather Cond Redox Potential (Eh) 373 Turbidityl ;2,^ Ext'lAmb Temp "C (prior sampling event) 1 1 \ £S • Time 13MD Conductance Temp °C Gal Purged 71 3.0 TW pH[5IE" 7.14 Redox Potential Eh (mV) Turbidity (NTU) 2^ Time use * 13H1 Conductance Gal Purged P^MO^ pH Temp °C Redox Potential Eh (mV) \^SO Turbidity (NTU) ^2.8/ Time nr^" Conductance Temp °C Gal Purged | 7i.G^ pH I ^ > Redox Potential Eh (mV) | 37^ Turbidity (NTU) a2F Time Gal Purged | y^.iS 13^)3 Conductance Temp °C pH|2T 7.W Redox Potential Eh (mV) Turbidity (NTU) White Mesa Mill Field Data Worksheet for Groundwater 1 of; MilJ - Groundyvater Discharge Permit Groundwater Monitoring Quality Assurance Plan (QAP) Date 03/22/2010 Rev i DENISO MINES ATTACHMENT 1 WHITE MESA URANIUM MILL FIELD DATA WORKSHEET FOR GROUND WATER Attachment 1 [g^^ See instruction Descnption of Sampling Event \^^^ QsX(vr4'gr' Qro^^A VJ^tfCte<^ ^loT Location (well name)) /^\/0-3\ Sampler Name and initials Date and Time for Purging and Sampling (if different) /J/i^ Well Purging Equip Used t3 pump oi| • | bailer Well Pump (if other than Bennet) Q.'^O Samphng Event S^&i^'g^n^^A (r^ pH Buffer 7 0 7.0 Prev Well Sampled in Sampling Event pH Buffer 4 0 M,0 Specific Conductance [iMHOS/ cm Well Depth(0 01 ft) | |30-^^ Depth to Water Before Purging 70 Casing Volume (V) 4" Well 3" Well (653h) (367h) Conductance (avg) ) ^ OS pH of Water (avg) Well Water Temp (avg) [IS^^S Weather Cond Redox Potential (Eh) 3221. Turbidity J/V Ext'lAmb Temp °C (pnor sampling event)] "7 Time Gal Purged Conductance Temp "C m3 pH|7,ao Redox Potential Eh (mV) | 334 Turbidity (NTU) Time 12.E»] Gal Purged | g^^7 Conductance Temp °C vm pHp^ 1^ Redox Potential Eh (mV) | ^3 Turbidity (NTU) Time I \CLS>^ Gal Purged | ^'^.^^ Conductance Temp °C Redox Potential Eh (mV) r^TT Turbidity (NTU) Time Gal Purged | ^.5.// Conductance Temp °C Redox Potential Eh (mV) | 3'3 Turbidity (NTU) White Mesa Mill Field Data Worksheet for Groundwater 1 of. MiH - Groundwater Discharge Permit Groundwater Monitoring Quality Assurance Plan (QAP) Date 6/06/2012 Rev 7 DENISO MINES Mi ATTACHMENT 1-2 WHITE MESA URANIUM MILL FIELD DATA WORKSHEET FOR GROUNDWATER See instruction Descnption of Sampling Event [vT^^, Y\OoA'Vh\t^ G-fpLKnA V/^<?v.'^<r Location (well name) MW-'3J Field Sample ID Sampler Name ___4_____ and initials iT^n Date and Time for Purging 4>/t^/2.oi2^ Well Purging Equip Used CS pump or | • | bailer Purging Method Used 13 2 casings | • |3 casings Sampling Event pH Buffer 7 0 and Sampling (if different) Well Pump (if other than Bennet) Prev Well Sampled in Sampling Event pH Buffer 4 0 Specific Conductance jiMHOS/ cm Well Depth(0 01 ft) \3Q.OO Depth to Water Before Purging | Casing Volume (V) 4" Well 3" Well (653h) (367h) mi Conductance (avg) Well Water Temp (avg) | 15.^7 Weather Cond pH of Water (avg) | Redox Potential (Eh)| Turbidity Ext'lAmb Temp "C (prior sampling event) 1^ Time \'h\0 Gal Purged | ^O.Q^ Conductance Temp °C pH 7.2.S Redox Potential Eh (mV) | 3*1^ Turbidity (NTU) 2-5.) Time 1311 Conductance Temp °C ^1143 Gal Purged | ZO,SO pH 7.i2v6 Redox Potential Eh (mV) | 3gt^ Turbidity (NTU) Time f3TX Conductance Temp °C Gal Purged \ gCIO, 1 pH I 7.2^ Redox Potential Eh (mV) Turbidity (NTU) Time Conductance Temp °C m7 Gal Purged [WW pH[^^ Redox Potential Eh (mV) | 7>7J Turbidity (NTU) White Mesa Mill Field Data Worksheet for Groundwater 1 of;