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Trust our People.Trust our Data. Billings,MT 800.735.4489•Casper,wy 888.235.0515 <br /> rrwyfi,b un <br /> Gillette,wy 868.686,7175•Helena,MT 877,472.0711 <br /> MAIN <br /> CLIENT: Energy Fuels Resources (USA) Inc <br /> Project: Whirlwind Mine-Water Report Date: 08/13/21 <br /> Work Order: C21070652 CASE NARRATIVE <br /> ' ORIGINAL SAMPLE SUBMITTAL(S) <br /> All original sample submittals have been returned with the data package. <br /> SAMPLE TEMPERATURE COMPLIANCE: 4°C (±2°C) <br /> Temperature of samples received may not be considered properly preserved by accepted standards. Samples that are hand <br /> delivered immediately after collection shall be considered acceptable if there is evidence that the chilling process has begun. <br /> GROSS ALPHA ANALYSIS <br /> ' Method 900.0 for gross alpha and gross beta is intended as a drinking water method for low TDS waters. Data provided by <br /> this method for non potable waters should be viewed as inconsistent. <br /> RADON IN AIR ANALYSIS <br /> ' The desired exposure time is 48 hours (2 days). The time delay in returning the canister to the laboratory for processing <br /> should be as short as possible to avoid excessive decay. Maximum recommended delay between end of exposure to <br /> beginning of counting should not exceed 8 days. <br /> ' SOIL/SOLID SAMPLES <br /> All samples reported on an as received basis unless otherwise indicated. <br /> ATRAZINE, SIMAZINE AND PCB ANALYSIS <br /> Data for PCBs, Atrazine and Simazine are reported from EPA 525.2. PCB data reported by ELI reflects the results for seven <br /> individual Aroclors. When the results for all seven are ND (not detected), the sample meets EPA compliance criteria for <br /> PCB monitoring. <br /> SUBCONTRACTING ANALYSIS <br /> Subcontracting of sample analyses to an outside laboratory may be required. If so, ENERGY LABORATORIES will utilize its <br /> branch laboratories or qualified contract laboratories for this service. Any such laboratories will be indicated within the <br /> Laboratory Analytical Report. <br /> BRANCH LABORATORY LOCATIONS <br /> eli-b-Energy Laboratories, Inc. - Billings, MT <br /> ' eli-g - Energy Laboratories, Inc. -Gillette, WY <br /> eli-h - Energy Laboratories, Inc. - Helena, MT <br /> ISO 17025 DISCLAIMER: <br /> The results of this Analytical Report relate only to the items submitted for analysis. <br /> ENERGY LABORATORIES, INC. -CASPER,WY certifies that certain method selections contained in this report meet <br /> requirements as set forth by the above accrediting authorities. Some results requested by the client may not be covered <br /> under these certifications. All analysis data to be submitted for regulatory enforcement should be certified in the sample <br /> state of origin. Please verify ELI's certification coverage by visiting www.energylab.com <br /> ELI appreciates the opportunity to provide you with this analytical service. For additional information and services visit our <br /> web page www.energylab.com. <br /> ' Page 2 of 31 <br />