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HomeMy WebLinkAboutDRC-2014-007101 - 0901a068804c45c8ENERGYFUELS DRC-2014-007101 Energy Fuels Resources (USA) Inc. 225 Union Blvd. Suite 600 Lakewood, CO, US, 80228 303 974 2140 www.energyruels.com December 4, 2014 Sent VIA E-MAIL AND OVERNIGHT DELIVERY Mr. Rusty Lundberg Division of Radiation Control Utah Department of Environmental Quality 195 North 1950 West P.O. Box 144850 Salt Lake City, UT 84114-4820 Re: Transmittal of Plan and Time Schedule under Utah Ground Water Discharge Permit UGW370004 Part I.G.4 (d) White Mesa Mill (the "Mill") Dear Mr. Lundberg: This letter transmits Energy Fuels Resources (USA) Inc.'s ("EFRI's") Plan and Time Schedule pursuant to State of Utah Groundwater Discharge Permit UGW370004 (the "Permit") Part I.G.4(d) for Violations of Part I.G.2 of the Permit. Part I.G.2 of the Permit provides that out-of-compliance ("OOC") status exists when the concentration of a pollutant in two consecutive samples from a compliance monitoring point exceeds a groundwater compliance limit ("GWCL"). On November 14, 2014, EFRI submitted a letter to the Director under Part I.G.I (a) of the Permit providing notice that the concentrations of specific constituents in groundwater monitoring wells at the Mill exceeded their respective GWCL's for the 3rd quarter of 2014 and indicating which of those constituents had two consecutive exceedances during that quarter. This Plan and Time Schedule addresses constituents requiring a Plan and Time Schedule for the 3rd quarter of 2014. Please contact me if you have any questions or require any further information. Yours very truly, ENERGY FUELS RESOURCES (USA) INC. Kathy Weinel Quality Assurance Manager cc: David C Frydenlund Harold R. Roberts David E. Turk Scott Bakken Dan Hillsten WHITE MESA MILL State of Utah Ground Water Discharge Permit UGW370004 Plan and Time Schedule Under Part I.G.4 (d) For Violations of Part I.G.2 for Constituents in the Third Quarter of 2014 Energy Fuels Resources (USA) Inc. 225 Union Boulevard, Suite 600 Lakewood, CO 80228 December 4, 2014 1 1. INTRODUCTION Energy Fuels Resources (USA) Inc. ("EFRI") operates the White Mesa Uranium Mill (the "Mill"), located near Blanding Utah, under State of Utah Ground Water Discharge Permit UGW370004 (the "Permit"). This is the plan and time schedule (the "Plan") required under Part I.G.4(c) of the Permit relating to violations of Part I.G.2 of the Permit for the 3rd quarter of 2014. Part I.G.2 of the Permit provides that out-of-compliance status exists when the concentration of a pollutant in two consecutive samples from a compliance monitoring point exceeds a groundwater compliance limit ("GWCL") in Table 2 ofthe Permit. The Permit was originally issued in March 2005, at which time GWCLs were set on an interim basis, based on fractions of State Ground Water Quality Standards or the equivalent, without reference to natural background at the Mill site. The Permit also required that EFRI prepare a background groundwater quality report to evaluate all historic data for the purposes of establishing background groundwater quality at the site and developing GWCLs under the Permit. As required by then Part I.H.3 of the Permit, EFRI submitted the following to the Director of the State of Utah Division of Radiation Control (the "Director"): • A Revised Background Groundwater Quality Report: Existing Wells For Denison Mines (USA) Corp. 's Mill Site, San Juan County, Utah, October 2007, prepared by ENTERA, Inc. (the "Existing Wells Background Report"); • A Revised Addendum: — Evaluation of Available Pre-Operational and Regional Background Data, Background Groundwater Quality Report: Existing Wells For Denison Mines (USA) Corp.'s Mill Site, San Juan County, Utah, November 16, 2007, prepared by ENTERA, Inc. (the "Regional Background Report"); and • A Revised Addendum: -- Background Groundwater Quality Report: New Wells For Denison Mines (USA) Corp. 's Mill Site, San Juan County, Utah, April 30, 2008, prepared by INTERA, Inc. (the "New Wells Background Report, and together with the Existing Wells Background Report and the Regional Background Report, the "Background Reports"). Based on a review of the Background Reports and other information and analyses the Director re-opened the Permit and modified the GWCLs to be equal to the mean concentration of background for each constituent on an intrawell basis plus two standard deviations or the equivalent. The modified GWCLs became effective on January 20, 2010. Part I.G.4 c) of the GWDP states, with respect to exceedances of GWCLs, "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 insure 2 that Permit limits will not be exceeded at the compliance monitoring point and that DMT or BAT will be reestablished." Pursuant to this requirement, EFRI has submitted eight Plans and Time Schedules and associated Source Assessment Reports ("SARs") to address previous dual exceedances (as required in light of other actions currently being undertaken by EFRI and as determined by DRC Staff and stated in teleconferences with EFRI on April 27 and May 2, 2011). 2. CONSTITUENTS AND WELLS SUBJECT TO THIS PLAN The following constituent has been identified in one well in the 3rd Quarter 2014 Exceedance Notice as being in out-of-compliance status under Part I.G.2 of the Permit: Table 1 Constituent and Well Subject to this Plan Constituent Monitoring Event POC Well GWCL Result Uranium 2nd Quarter 2014 3rd Quarter 2014 MW-28 4.9 pg/L 61.3 u:g/L 10.6 pg/L It should be noted that the 3rd Quarter 2014 Exceedance Notice identifies a number of wells with consecutive exceedances of Nitrate + Nitrite and/or Chloride, Chloroform and Dichloromethane, and pH (less than the respective GWCLs for pH) in a number of wells. However, none of those constituents are included in this Plan, for the reasons stated in the 3rd Quarter 2014 Exceedance Notice. Chloroform and Dichloromethane are associated with the Chloroform Plume, and the August 23, 1999 DRC Notice of Violation and Groundwater Corrective Action Order. Nitrate + Nitrite and Chloride are associated with the Nitrate/Chloride plume, and are currently covered by the December 12, 2012 Stipulation and Consent Order. With respect to pH, 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. 3. CATEGORIES FOR ANALYSIS Previously EFRI has categorized wells and constituents in several categories as follows: • Constituents Potentially Impacted by Decreasing pH Trends Across the Site • Newly Installed Wells with Interim GWCLs • Constituents in Wells with Previously Identified Rising Trends • Pumping Wells • Other Constituents Uranium in MW-28 falls within the last category: other constituents. Assessment of uranium in MW-28 will follow the process noted below. 3 3.1. Other Constituents On May 28, 2014 EFRI notified DRC personnel of damage to Monitoring Well 28 ("MW-28"). The damage was noted by EFRI Environmental Staff during routine, quarterly sampling activities. Upon arrival at MW-28, EFRI Environmental Staff noticed that there was evidence that a vehicle had struck the outer protective metal casing of MW-28 and it was slightly bent and leaning to the west. Inspection of the inner, 10-inch PVC protective casing and the 4-inch well casing also showed signs of damage. The concrete seal between the 10-inch casing and the 4- inch casing was cracked and EFRI Environmental Staff noted that the 2 inner PVC casings were likely cracked and/or broken. Upon discovery of the damage on May 28, 2014, EFRI Environmental Staff contacted the EFRI Quality Assurance Manager ("QAM") via text message. The EFRI QAM notified DRC personnel in person, while at the DRC offices in Salt Lake City. On June 2, and June 5, 2014 Environmental Staff and Bayles Exploration repaired the well and removed the debris in the bottom of the well resulting from the damage. The Environmental Staff then overpumped the well and removed over 4 casing volumes to redevelop the well. The well was sampled and the routine, second quarter 2014 sample was collected on June 18, 2014. The repair notification and report are included as Attachment 1 of this Plan. Three new analytes were reported above the GWCL in the second quarter 2014 data. The analytes are uranium, vanadium and cadmium. The third quarter 2014 data show a decrease in all three constituents with vanadium and cadmium below the GWCLs. The one-time exceedances followed by a sharp decline indicate that the exceedances were temporary and are the result of the damage to the well and the subsequent activities undertaken to repair the casing and clean out the debris and soils. Per the GWDP, EFRI began accelerated monitoring in third quarter 2014 in MW-28 for those three constituents. The third quarter 2014 MW-28 results for vanadium and cadmium are below the GWCLs and no further action except accelerated monitoring of those constituents is required. The uranium result dropped significantly, but remained above the GWCL in the third quarter 2014. As stated above, Part I.G.4 c) of the GWDP a Plan and Time Schedule is required for constituents exceeding their GWCL in two consecutive monitoring periods. 4. PLAN 4.1. General This Plan is a plan and 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, to the extent applicable, discharge minimization technology and best available technology will be reestablished. Given the historic results (Attachment 2), lack of previous exceedances and the analyses in the Background Reports, EFRI believes the exceedances are temporary and are the result of the damage to the well and the subsequent activities undertaken to repair the casing and clean out the debris and soils. 4 Therefore, the analysis of the exceedance will be to continue monitoring MW-28 on an accelerated schedule (from semi-annually to quarterly) for uranium, vanadium and cadmium as required by the GWDP. Based on the sharp decline noted from second to third quarter, EFRI anticipates that the results for cadmium and vanadium will remain below the GWCL and uranium will fall below the GWCL. Currently, additional actions beyond accelerated monitoring are required are not required for vanadium and cadmium because these constituents have only exceeded their GWCL once. An assessment of the uranium results will be completed after two more quarters of data are collected (fourth quarter 2014 and first quarter 2015). If the uranium results continue to exceed the GWCL, EFRI will perform a video inspection of the interior of MW-28 to investigate the possibility of additional physical damage to the well structure that may be causing the elevated uranium results. Further actions would be determined after the video inspection based on the results of any such inspection. 5. TIME SCHEDULE Accelerated monitoring will continue as required. An assessment of the uranium results will be completed after the first quarter 2015 results are received. The results of the assessment will be included in the first quarter 2015 report submitted to DRC on or before June 1, 2015. If additional video inspections are required based on the results from the fourth quarter 2014 and first quarter 2015, the schedule and process for completion of the inspection will be discussed with DRC at the time the first quarter 2015 Exceedance Notice is submitted. Any further studies identified by the Director as being required in order to fulfill the requirements of Part I.G.4(c) of the Permit or the Notice, will be prepared and submitted by EFRI in accordance with a schedule to be approved by the Director. 6. CONCLUSION As noted above and in the attached Well Repair Notification, MW-28 was struck by a vehicle and sustained a significant amount of damage to the outer and inner casings. Repairs and clean out of the well were completed. A large amount of soil, concrete and casing pieces were removed from the well during the clean out, after the repairs were completed. The repair and clean out activities were completed less than 2 weeks prior to the second quarter sample collection. The damage, repair and subsequent clean out activities affected the well and likely caused the exceedances noted in the second quarter as well as the repeat exceedance of uranium in the third quarter. The sharp decline of the detections between the second and third quarter indicates that the exceedances are temporary and are the result of disturbances resulting from the damage, repairs and cleanout. MW-28 has not been impacted by Mill activities and the exceedance is not the result of Mill activities because no other constituents have been detected above their GWCLs. Mill impacts would be seen through significant increases of the indicator parameters. No increases in the indicator parameters were noted in the second and third quarter samples. 5 ATTACHMENT 1 Well Repair Notification for MW-28 ENERGY FUELS Energy Fuels Resources (USA) Inc. 225 Union Blvd. Suite 600 Lakewood, CO, US, 80228 303 974 2140 www.energvfuels.com July 2, 2014 Sent VIA OVERNIGHT DELIVERY Mr. Rusty Lundberg Division of Radiation Control Utah Department of Environmental Quality 195 North 1950 West P.O. Box 144850 Salt Lake City, UT 84114-4820 Re: Energy Fuels Resources (USA) Inc. Monitoring Well Repair Notification for MW-28 at White Mesa Uranium Mill, Blanding Utah Dear Mr. Lundberg: On May 28, 2014, Energy Fuels Resources (USA) Inc. ("EFRI") notified Utah Division of Radiation Control ("DRC") personnel of damage noted to Monitoring Well 28 ("MW-28"). The damage was noted by EFRI Environmental Staff during routine, quarterly sampling activities. This letter documents the investigation into the cause of the damage and the repairs completed. Incident Description • On May 28, 2014, during routine, quarterly, sampling activities, EFRI Environmental Staff noted damage to MW-28. Upon arrival at MW-28, EFRI Environmental Staff noticed that the there was evidence that a vehicle had struck the outer protective metal casing of MW-28 and it was slightly bent and leaning to the west (see Photograph Number 1). Inspection of the inner, 10-inch PVC protective casing and the 4-inch well casing also showed signs of damage. The concrete seal between the 10-inch casing and the 4-inch casing was cracked and EFRI Environmental Staff noted that the 2 inner PVC casings were likely cracked and/or broken. • The Environmental Staff noted that the metal casing lid was broken off (see Photograph 1) and a portion of the dedicated pump tubing had slipped into the well. The tubing was retrieved. When the static water level was measured, approximately 2 feet of the probe and tape were covered with mud and debris. Letter to Rusty Lundberg July 2, 2014 Page 2 • Upon discovery of the damage on May 28, 2014, EFRI Environmental Staff contacted the EFRI Quality Assurance Manager ("QAM") via text message. The EFRI QAM notified DRC personnel in person, while at the DRC offices in Salt Lake City. • An incident investigation was started on May 28, 2014 in response to the damage to MW-28. Incident Investigation Results • There was an incident on the weekend on May 17, and May 18, 2014 that involved a pickup truck. The pickup truck was found with damage to the right passenger side bumper and rear right tire on May 19, 2014. The bumper was dented and the fiberglass broken. The employee in possession of the pickup truck stated that a rock had done the damage. • Immediately upon discovery of the damage to MW-28 on May 28, 2014, the Operation Superintendent took the damaged truck out to the well and the damage on the bumper matched the damage on the casing. The employee was contacted for further details to discuss the latest findings and observations. • The employee again stated that the damage resulted from hitting a rock. Surveillance video from May 17 through May 19, 2014 was reviewed. The video confirmed the timeframe of the damage and indicated that the source of the damage was not a rock. The employee was terminated. Summary of Repairs • On Monday, June 2, 2014 Environmental Staff and Bayles Exploration examined MW-28 to assess the damage and determine if the well could be repaired. • On June 2, 2014, a backhoe was used to excavate the perimeter of the well casings to expose any damage. Damage to the outer steel protective casing, the 2-inner PVC casings, and the sealing concrete between the 2 PVC casings was noted at approximately 3.5 feet below ground surface ("bgs"). The broken section of all three casings was removed during the excavation (see Photograph 2 and Photograph 3). • Concrete chips and PVC debris fell into the well during the excavation and wedged the dedicated pump in place. • The dedicated pump lines were attached to the backhoe bucket in an effort to retrieve the pump. The pump was successfully retrieved with no additional damage to the well. The pump and all sampling lines were discarded (see Photograph 2). Letter to Rusty Lundberg July 2, 2014 ' Page 3 • After the pump was removed, the well opening was covered to prevent any further debris from falling into the well (see Photograph 4). • The 2 PVC casings and the sealing concrete were cut with a utility saw to provide a straight edge for the repairs (see Photographs 5 and 6). • The inner 4-inch casing was repaired using a "slip cap" to join the old casing and the new casing (see Photographs 7 and 8). Glues and adhesives were not used when joining the casings and slip cap. • A new piece of 10-inch outer PVC casing was added to the well (see Photograph 9). The new casing was joined to the old casing using a "bell joint". Glues and adhesives were not used when joining the casings. • Well plug (cement) was added between the 4-inch and 10-inch casing (see Photograph 10). • A new outer steel protective casing was added. • On June 5, 2014, Bayles Exploration removed the debris in the bottom of the well resulting from the damage. The Environmental Staff then overpumped the well and removed over 4 casing volumes to redevelop the well (Attachment A). • The new measuring point on the top of the casing ("TOC") was surveyed by a Registered Utah Land Surveyor (Attachment B). • The well was sampled and the routine, second quarter sample was collected on June 18, 2014. If you should have any questions regarding this submittal please contact me. Yours very truly, ENERGY FUELS RESOURCES (USA) INC. Kathy Weinel Quality Assurance Manager cc: David C. Frydenlund Harold R. Roberts David E. Turk Dan Hillsten photographs ; t c3 O r o Si 43 OH V) > I' rill . rv mSmT EMffl to T... CM 43 OH cd o o • I 1 m •'»! 4'- cd '— brj O o PH 7 43 n CH cd * 00 V c o 43 PH 1 43 CU Cd &0 o o 43 PH I , V m 16 SSI \2& to 8E 3' m S OS ¥> 4* si 5 J -4> 4 3* ir T5 Photograph 7 1 », - A - - r * * m/7 as % • 3> 7f* .9-V 7 ' *-rt-i if 1 Photograph 8 a* N KC 4. / .4' Photograph 9 Attachment A i OVERPUMPING WELL DEVELOPMENT DATA DTtO 7^ .3o 76.2S Well Number- Initial Depth to Bottom (0.01ft): 1 O Initial Depth to Water (0.01ft): 7 S. ^ <~ Date Installed: Well Number: /AALO - Zff Pump Tvpe: /Cr^>^-e^P^i Pump Rate:. Initial Depth to Bottom (0.01ft):. Final Depth to Bottom (0.01ft):_ Date WIN Time IOCS II ^7 1HH Volume of Water Removed II 1 <j<^f ll pH f rt- Z OJJ. \ I Casing Volume: 13.7^ Specific Conductance Sgg' H2IO Temp 15-7Z Turbidity lg.~7 7. ?. "20 Jlcci'^cAs Notes (color, clarity, particulates etc.) AA ^/-icXv, OcH r^^ airy*. 7 C^klloASl Casing Volume Calculation: Volume (in gallons) = (h)(cf) Where: h = height of the water column m feet cf = Conversion factor (2 inch = 0.1632, 3 inch = 0.3672, 4 inch = 0.6528, 6 inch = 1.4688) Attachment B ENERGY FUELS Energy Fuels Resources (USA) Inc. 850 East Highway 89A, PO Box 897 Fredonia, AZ 86022 928 643 6185. fax 926 643 6186 www.energyfuels.com June 12, 2014 Energy Fuels Resources (USA) Inc. c/o Garrin Palmer 6425 South Highway 191 P.O. Box 809 Blanding, Utah 84511 Garrin, Attached are the following: 1. Monitoring Wells May 2014 SURVEYOR'S CERTIFICATE I, Michael W. Purdy a Registered Utah Land Surveyor do hereby certify that I hold a license in accordance with title 58, chapter 22, professional engineers and land surveyors licensing act, Utah code annotated, 1953 as amended, certificate no. 334571.1 further certify that these reports correctly show a survey made under my direct supervision. Energy Fuels Resources - Monitoring WeU Information - June 2014 Coordinate Syitem: Modified Utah State Plane - NAD83 - South Zone - US Survey Feet Well* Using Fisher Survey Verticil Datum Northing Eaitlng Top Casing Elev. Ground Elev. MW-28 10164465.69 2217615.744 5619.78 5618 33 ATTACHMENT 2 Historic Results for MW-28 MW-28 Historical Data Parameter Name Date Sampled Report Result Report Units Lab Qualifier Cadmium 6/21/2005 9/22/2005 12/14/2005 3/22/2006 6/23/2006 9/12/2006 10/24/2006 3/15/2007 6/20/2007 8/28/2007 10/23/2007 3/12/2008 3/12/2008 6/3/2008 8/6/2008 11/5/2008 2/4/2009 5/12/2009 8/17/2009 10/12/2009 1/19/2010 4/19/2010 11/12/2010 4/11/2011 10/5/2011 5/8/2012 11/14/2012 5/15/2013 12/4/2013 6/18/2014 9/16/2014 3.4 1.58 4.68 4.22 2.68 3.94 3.94 1.84 3.27 3.34 3.36 3.33 3.4 3.22 3.42 3.87 3.66 3.9 3.8 4.39 4.01 4.2 4.11 4.13 3.99 3.85 4.37 4.61 4.74 5.41 4.7 ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L MW-28 Historical Data Parameter Name Date Sampled Report Result Report Units Lab Qualifier Uranium 6/21/2005 9/22/2005 12/14/2005 3/22/2006 6/23/2006 9/12/2006 10/24/2006 3/15/2007 6/20/2007 8/28/2007 10/23/2007 3/12/2008 3/12/2008 6/3/2008 8/6/2008 11/5/2008 2/4/2009 5/12/2009 8/17/2009 10/12/2009 1/19/2010 4/19/2010 11/12/2010 4/11/2011 10/5/2011 5/8/2012 11/14/2012 5/15/2013 12/4/2013 6/18/2014 9/16/2014 3.22 3.75 3.46 3.89 4.89 3.36 3.49 2.69 4.56 3.67 3.4 3.21 3.17 3.46 3.15 3.55 3.42 3.34 3.24 3.46 3.51 3.36 3.45 3.29 3.19 3.44 3.45 3.58 3.34 61.3 10.6 ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L MW-28 Historical Data Parameter Name Date Sampled Report Result Report Units Lab Qualifier Vanadium 6/21/2005 9/22/2005 12/14/2005 3/22/2006 6/23/2006 9/12/2006 10/24/2006 3/15/2007 6/20/2007 8/28/2007 10/23/2007 3/12/2008 3/12/2008 6/3/2008 8/6/2008 11/5/2008 2/4/2009 5/12/2009 8/17/2009 10/12/2009 1/19/2010 4/19/2010 11/12/2010 4/11/2011 10/5/2011 5/8/2012 1/14/2012 5/15/2013 12/4/2013 6/18/2014 9/16/2014 20 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 109 18.5 ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L U U U u u u u u u u u u u u u u u u u u u u u u u u u u u