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HomeMy WebLinkAboutDRC-2013-002151 - 0901a068803772d3DRC-2013 2151 ENERGYFUELS Energy Fuels Resources (USA) Inc. 225 Union Blvd. Suite 600 Lakewood, CO, US, 80228 303 974 2140 www.energyfuels.com Mr. Rusty Lundberg Division of Radiation Control Utah Department of Environmental Quality April 30,2013 VIA PDF AND EXPRESS DELIVERY 195 North 1950 West P.O. Box 144850 Salt Lake City, UT 84114-4820 Dear Mr. Lundberg: Re: State of Utah Ground Water Discharge Permit ("the Permit") No. UGW370004 White Mesa Uranium Mill - Installation Report Pursuant to Part I.F.6 of the Permit This letter transmits the As-Built Report for Energy Fuels Resources (USA) Inc.'s ("EFRTs") perched groundwater monitoring wells TW4-28, TW4-29, TW4-30, and TW4-31 as required by January 31, 2013 conference call as documented in the February 14, 2013 Division of Radiation Control ("DRC") Confirmatory Action Letter. The February 14,2013 Confirmatory Action Letter (received February 20,2013) required the following: • EFR will install one well < 200feet downgradient of well TW4-I2 and three wells < 200feet downgradient of well TW4-27. • On or before February 7, 2013 EFR would provide the DRC the locations of the four new wells mentioned above and a schedule when these wells would be drilled and installed, well developed, hydraulic testing, and sampled. Based on the January 31, 2013 conference call, EFRI submitted the required locations, installation schedule, development schedule, and hydraulic testing schedule on February 6, 2013. TW4-28, TW4-29, TW4-30, and TW4-31were installed during the week of March 4,2013. Installation History and Conformance with GWDP Requirements Per the agreements, monitoring wells TW4-28, TW4-29, TW4-30, and TW4-31were installed < 200 feet downgradient of either TW4-12 or TW4-27. Development and hydraulic testing have been completed in TW4- 28, TW4-29, TW4-30, and TW4-31 and the results of those activities are included in the attached As-Built report. TW4-28, TW4-29, TW4-30, and TW4-31 will be sampled in the second quarter of 2013. On or before 60 calendar days of receipt of the analytical data for the second quarter 2013 samples, BFRI will submit a Contamination investigation Report ("CIR") that will contain the information required by the February 14,2013 Confirmatory Action Letter. The enclosed As-Built Report in Attachment I includes the items required for As-Built Reports in the Permit Part I.F.6, and is being submitted for TW4-28, TW4-29, TW4-30, and TW4-31. Please contact the undersigned if you have any questions or require any further information. ENERGY FUELS RESOURCES (USA) INC. Jo Ann Tischler Manager of Compliance and Licensing cc: David C. Frydenlund Harold R. Roberts David E. Turk Katherine A. Weinel Yours vei HYDRO GEO CHEM, INC. Environmental Science & Technology INSTALLATION AND HYDRAULIC TESTING OF PERCHED MONITORING WELLS TW4-28 THROUGH TW4-31 WHITE MESA URANIUM MILL NEAR BLANDING, UTAH April 30, 2013 Prepared for: ENERGY FUELS RESOURCES (USA) INC 225 Union Blvd., Suite 600 Lakewood, Colorado 80228 Prepared by: HYDRO GEO CHEM, INC. 51 West Wetmore Road, Suite 101 Tucson, Arizona 85705 (520) 293-1500 Project Number 7180000.00-01.0 Installation and Hydraulic Testing of Perched Monitoring Wells TW4-28 Through TW4-31, White Mesa Uranium Mill H:\718000\nitrateast\well_installation_0413_rev1.doc April 30, 2013 i TABLE OF CONTENTS 1. INTRODUCTION.............................................................................................................. 1 2. DRILLING AND CONSTRUCTION................................................................................ 3 2.1 Drilling and Logging Procedures............................................................................3 2.2 Construction............................................................................................................3 2.3 Development...........................................................................................................3 3. HYDRAULIC TESTING................................................................................................... 5 3.1 Testing Procedures..................................................................................................5 3.2 Hydraulic Test Data Analysis.................................................................................5 4. CONCLUSIONS................................................................................................................. 9 5. REFERENCES ................................................................................................................. 11 6. LIMITATIONS................................................................................................................. 13 TABLES 1 Well Survey Data 2 Slug Test Parameters 3 Slug Test Results FIGURES 1 Locations of New Temporary Perched Wells TW4-28, TW4-29, TW4-30, and TW4-31, White Mesa Site 2 TW4-28 As-Built Well Construction Schematic 3 TW4-29 As-Built Well Construction Schematic 4 TW4-30 As-Built Well Construction Schematic 5 TW4-31 As-Built Well Construction Schematic 6 Corrected and Uncorrected Displacement APPENDICES A Lithologic Logs B Well Development Field Sheets C Slug Test Plots D Slug Test Data Installation and Hydraulic Testing of Perched Monitoring Wells TW4-28 Through TW4-31, White Mesa Uranium Mill H:\718000\nitrateast\well_installation_0413_rev1.doc April 30, 2013 ii Installation and Hydraulic Testing of Perched Monitoring Wells TW4-28 Through TW4-31, White Mesa Uranium Mill H:\718000\nitrateast\well_installation_0413_rev1.doc April 30, 2013 1 1. INTRODUCTION This report describes the installation, development, and hydraulic testing of perched monitoring wells TW4-28 through TW4-31 at the White Mesa Uranium Mill (the “Mill” or the “site”). These four wells were installed pursuant to the January 31, 2013 conference call between Energy Fuels Resources (USA) Inc (EFR) and the Utah Division of Radiation Control (DRC) that was documented in the letter from DRC dated February 14, 2013 and received by EFR on February 20, 2013. The wells were installed to provide additional data regarding perched groundwater nitrate concentrations in the vicinities of wells TW4-12 and TW4-27. Nitrate concentrations have recently exceeded the State of Utah Groundwater Quality Standard of 10 milligrams per liter (mg/L) in TW4-12, and have exceeded 10 mg/L in TW4-27 since installation in October 2011. TW4-28 and TW4-31 were installed east of TW4-12 and TW4-27, respectively, and TW4-29 and TW4-30 were installed south and southeast of TW4-27, respectively, as shown on Figure 1, during the week of March 4, 2013. Development consisted of surging and bailing on March 13 and March 14, followed by overpumping on March 25 and March 26, 2013. Hydraulic testing consisted of slug tests conducted on April 3 and April 4, 2013. Installation and Hydraulic Testing of Perched Monitoring Wells TW4-28 Through TW4-31, White Mesa Uranium Mill H:\718000\nitrateast\well_installation_0413_rev1.doc April 30, 2013 2 Installation and Hydraulic Testing of Perched Monitoring Wells TW4-28 Through TW4-31, White Mesa Uranium Mill H:\718000\nitrateast\well_installation_0413_rev1.doc April 30, 2013 3 2. DRILLING AND CONSTRUCTION Well installation procedures were similar to those used previously at the site for the construction of other perched zone wells (Hydro Geo Chem, Inc. [HGC], 2005). Drilling and construction were performed by Bayles Exploration, Inc., and borings logged by Mr. Lawrence Casebolt under contract to EFR. As-built diagrams for the well construction, based primarily on information provided by Mr. Casebolt, are shown in Figures 2 through 5. The depths to water shown in the as-built diagrams were based on water level measurements taken just prior to development. New wells were surveyed by a State of Utah licensed surveyor and the location and elevation data are provided in Table 1. 2.1 Drilling and Logging Procedures A 12¼ -inch diameter tricone bit was used to drill borings of sufficient diameter to install 8-inch- diameter, Schedule 40 poly vinyl chloride (PVC) surface (conductor) casings. The surface casings extended to depths of approximately 10 feet below land surface. Once the surface casings were in place, the boreholes were drilled by air rotary using a 6¾ inch diameter tricone bit. The boreholes penetrated the Dakota Sandstone and the Burro Canyon Formation and terminated in the Brushy Basin Member of the Morrison Formation. Drill cuttings samples used for lithologic logging were collected at 2½-foot depth intervals and placed in labeled, zip-sealed plastic bags and labeled plastic cuttings storage boxes. Copies of the lithologic logs submitted by Mr. Casebolt are provided in Appendix A. 2.2 Construction The wells were constructed using 4-inch diameter, Schedule 40, flush-threaded PVC casing and 0.02-slot, factory-slotted PVC screen. Colorado Silica Sand was used as a filter pack and installed to depths of approximately 5 feet above the screened intervals. The annular spaces above each filter pack were sealed with hydrated bentonite chips. Well casings were fitted with 4-inch PVC caps to keep foreign objects out of the wells and lockable steel security casings were installed to protect the wells. 2.3 Development Wells were developed by surging and bailing followed by overpumping. Development records are provided in Appendix B. Installation and Hydraulic Testing of Perched Monitoring Wells TW4-28 Through TW4-31, White Mesa Uranium Mill H:\718000\nitrateast\well_installation_0413_rev1.doc April 30, 2013 4 Installation and Hydraulic Testing of Perched Monitoring Wells TW4-28 Through TW4-31, White Mesa Uranium Mill H:\718000\nitrateast\well_installation_0413_rev1.doc April 30, 2013 5 3. HYDRAULIC TESTING Hydraulic testing consisted of slug tests conducted by HGC personnel using a methodology similar to that described in HGC (2005). 3.1 Testing Procedures The slugs used for the tests consisted of two sealed, pea-gravel-filled, schedule 80 PVC pipes approximately three and four feet long as described in HGC (2002). The three-foot slug displaced approximately 3/4 gallons of water and the four-foot slug approximately 1/2 gallons of water. 0-30 pounds per square inch absolute (psia) Level TrollJ data loggers were used for the tests. One Level Troll was deployed below the static water column in the tested well and used to measure the change in water level during the test. The other Level Troll was used to measure barometric pressure and was placed in a protected environment near the wells for the duration of the testing. Automatically logged water level data were collected at 3-second intervals and barometric data at 5-minute intervals. Prior to each test, the static water level was measured by hand using the electric water level meter and recorded in the field notebook. The data logger was then lowered to a depth of approximately one foot above the base of the well casing, and background pressure readings were collected for approximately 60 minutes prior to beginning each test. The purpose of collecting the background data was to allow correction for any detected water level trends. Once background data were collected, the slug and electric water level meter sensor were suspended in the tested well just above the static water level. The test commenced by lowering the slug to a depth of approximately two feet below the static water level over a period of a few seconds and taking water level readings by hand as soon as possible afterwards. Hand-collected data recorded in the field notebook were obtained more frequently in the first few minutes when water levels were changing more rapidly, then less frequently as the rate of water level change diminished. Upon completion of each test, automatically logged data were checked and backed up on the hard drive of a laptop computer. 3.2 Hydraulic Test Data Analysis Data from each test was analyzed using AQTESOLVTM (HydroSOLVE, 2000), a computer program developed and marketed by HydroSOLVE, Inc. In preparing the automatically logged data for analysis, the total number of records was reduced. All data collected in the first 30 seconds were retained, then every 2nd, then 3rd, then 4th, etc. record was retained for analysis. Installation and Hydraulic Testing of Perched Monitoring Wells TW4-28 Through TW4-31, White Mesa Uranium Mill H:\718000\nitrateast\well_installation_0413_rev1.doc April 30, 2013 6 For example, if the first 10 records were retained (30 seconds of data at 3-second intervals), the next records to be retained would be the 12th, the 15th, the 19th, the 24th, etc. Data were analyzed using two solution methods: the KGS unconfined method (Hyder et al., 1994) and the Bouwer-Rice unconfined method (Bouwer and Rice, 1976). When filter pack porosities were required by the analytical method, a value of 30 percent was used. The saturated thicknesses were taken to be the difference between the depth of the static water level measured just prior to each test and the depth to the Brushy Basin Member contact as defined in the drilling logs (Appendix A). The static water levels were below the tops of the screened intervals in wells TW4-29, TW4-30, and TW4-31 and the saturated thicknesses were taken to be the effective screen lengths. Because of relatively rapid recoveries and relatively short test durations, barometric pressure changes had minimal impact on the tests except at TW4-29 and TW4-30. Automatically logged data from TW4-29 and TW4-30 were corrected for barometric pressure changes using a correction factor of 20%. Figure 6 compares corrected and uncorrected water level displacements for these tests. The KGS solution allows estimation of both specific storage and hydraulic conductivity, while the Bouwer-Rice solution allows estimation of only the hydraulic conductivity. The Bouwer- Rice solution is valid only when a straight-line is identifiable on a plot of the log of displacement versus time (indicating that flow is nearly steady), and is insensitive to both storage and the specified initial water level rise. Typically, only the later-time data are interpretable using Bouwer-Rice. The KGS solution accounts for non-steady flow and storage, is sensitive to the specified initial water level rise, and generally allows a fit to both early and late time data. Both solutions were used for comparison. Automatically logged and hand-collected data were analyzed separately using both solution methods. The hand-collected data therefore served as an independent data set and a check on the accuracy of the automatically logged data. Table 2 summarizes test parameters and Table 3 and Appendix C provide the results of the analyses. Appendix C contains plots generated by AQTESOLVJ that show the quality of fit between measured and simulated displacements, and reproduce the parameters used in each analysis. Appendix D provides both raw and corrected displacement data. Estimates of hydraulic conductivity range from 1.1 x 10-5 centimeters per second (cm/s) to 3.9 x 10-4 cm/s using automatically logged data, and from 1.4 x 10-5 cm/s to 4.1 x 10-4 cm/s using hand-collected data. Estimates are within the range previously measured at the site (approximately 2 x 10-8 cm/s to 0.01 cm/s). Installation and Hydraulic Testing of Perched Monitoring Wells TW4-28 Through TW4-31, White Mesa Uranium Mill H:\718000\nitrateast\well_installation_0413_rev1.doc April 30, 2013 7 In general, the agreement between estimates obtained from automatically logged and hand- collected data is good, and within 30% for both solution methods except at TW4-30, where agreement using Bouwer-Rice was within a factor of two. The agreement between hydraulic conductivities estimated from the KGS and Bouwer-Rice solutions (for both automatically- logged and hand-collected data) is also good, and values agree within 30% except at TW4-30, where agreement (using middle-time data) is within a factor of 21/2. The data from TW4-30 were difficult to interpret using Bouwer-Rice because the data did not clearly form straight lines on the semi-log plots, suggesting that steady flow, a key assumption of the Bouwer-Rice solution, was not approached over the course of the test. Fits to early-, middle- and late-time data were attempted wherever a near straight line appeared to occur. Using Bower-Rice was also somewhat difficult at TW4-29 for the same reasons, and fits to middle- and late-time data were attempted. By contrast, the KGS solution provided good fits to all data (early-, middle-, and late-time). For this reason, and because the KGS solution also accounts for non-steady flow and aquifer storage, the results obtained using KGS are considered more representative than those obtained using Bouwer-Rice. Installation and Hydraulic Testing of Perched Monitoring Wells TW4-28 Through TW4-31, White Mesa Uranium Mill H:\718000\nitrateast\well_installation_0413_rev1.doc April 30, 2013 8 Installation and Hydraulic Testing of Perched Monitoring Wells TW4-28 Through TW4-31, White Mesa Uranium Mill H:\718000\nitrateast\well_installation_0413_rev1.doc April 30, 2013 9 4. CONCLUSIONS Procedures for the installation, hydraulic testing, and development at new perched monitoring wells TW4-28 through TW4-31 are similar to those used previously at the site for the construction, testing, and development of other perched zone wells. Automatically logged and hand-collected slug test data from new wells were analyzed using KGS and Bouwer-Rice analytical solutions. Estimates of hydraulic conductivity range from 1.1 x 10-5 cm/s to 3.9 x 10-4 cm/s using automatically logged data, and from 1.4 x 10-5 cm/s to 4.1 x 10-4 cm/s using hand-collected data. Estimates are within the range previously measured at the site (approximately 2 x 10-8 cm/s to 0.01 cm/s). In general, the agreement between estimates obtained from automatically logged and hand- collected data is good, and within 30% for both solution methods except at TW4-30, where agreement using Bouwer-Rice was within a factor of two. The agreement between hydraulic conductivities estimated from the KGS and Bouwer-Rice solutions (for both automatically- logged and hand-collected data) is also good, and values agree within 30% except at TW4-30, where agreement (using middle-time data) is within a factor of 21/2. The data from TW4-30 were difficult to interpret using Bouwer-Rice because the data did not clearly form straight lines on the semi-log plots, suggesting that steady flow, a key assumption of the Bouwer-Rice solution, was not approached over the course of the test. Fits to early-, middle- and late-time data were attempted wherever a near straight line appeared to occur. Using Bower-Rice was also somewhat difficult at TW4-29 for the same reasons, and fits to middle- and late-time data were attempted. By contrast, the KGS solution provided good fits to all data (early-, middle-, and late-time). For this reason, and because the KGS solution also accounts for non-steady flow and aquifer storage, the results obtained using KGS are considered more representative than those obtained using Bouwer-Rice. Installation and Hydraulic Testing of Perched Monitoring Wells TW4-28 Through TW4-31, White Mesa Uranium Mill H:\718000\nitrateast\well_installation_0413_rev1.doc April 30, 2013 10 Installation and Hydraulic Testing of Perched Monitoring Wells TW4-28 Through TW4-31, White Mesa Uranium Mill H:\718000\nitrateast\well_installation_0413_rev1.doc April 30, 2013 11 5. REFERENCES Bouwer, H. and R.C. Rice. 1976. A Slug-Test method for Determining Hydraulic Conductivity of Unconfined Aquifers with Completely or Partially Penetrating Wells. Water Resources Research, Vol. 12, No. 3, Pp. 423-428. Hyder, Z, J.J. Butler, Jr. C.D. McElwee, and W. Liu. 1994. Slug Tests in Partially Penetrating Wells. Water Resources Research, Vol. 30, No. 11, Pp. 2945-2957. Hydro Geo Chem, Inc. (HGC). 2002. Hydraulic Testing at the White Mesa Uranium Mill Near Blanding, Utah During July 2002. Submitted to International Uranium Corporation. August 22, 2002. HGC. 2005. Perched Monitoring Well Installation and Testing at the White Mesa Uranium Mill, April through June 2005. Submitted to International Uranium Corporation. August 3, 2005. HydroSOLVE, Inc. 2000. AQTESOLV for Windows. User=s Guide. Installation and Hydraulic Testing of Perched Monitoring Wells TW4-28 Through TW4-31, White Mesa Uranium Mill H:\718000\nitrateast\well_installation_0413_rev1.doc April 30, 2013 12 Installation and Hydraulic Testing of Perched Monitoring Wells TW4-28 Through TW4-31, White Mesa Uranium Mill H:\718000\nitrateast\well_installation_0413_rev1.doc April 30, 2013 13 6. LIMITATIONS The information and conclusions presented in this report are based upon the scope of services and information obtained through the performance of the services, as agreed upon by HGC and the party for whom this report was originally prepared. Results of any investigations, tests, or findings presented in this report apply solely to conditions existing at the time HGC’s investigative work was performed and are inherently based on and limited to the available data and the extent of the investigation activities. No representation, warranty, or guarantee, express or implied, is intended or given. HGC makes no representation as to the accuracy or completeness of any information provided by other parties not under contract to HGC to the extent that HGC relied upon that information. This report is expressly for the sole and exclusive use of the party for whom this report was originally prepared and for the particular purpose that it was intended. Reuse of this report, or any portion thereof, for other than its intended purpose, or if modified, or if used by third parties, shall be at the sole risk of the user. Installation and Hydraulic Testing of Perched Monitoring Wells TW4-28 Through TW4-31, White Mesa Uranium Mill H:\718000\nitrateast\well_installation_0413_rev1.doc April 30, 2013 14 TABLES TABLE 1 Well Survey Data Latitude Longitude Top of Casing Ground (North) (West) (feet amsl) (feet amsl) TW4-28 37o 31' 57.4499" 109 o 29' 51.4144"5617.00 5613.52 TW4-29 37o 31' 42.1024" 109 o 29' 54.7353"5606.04 5602.56 TW4-30 37o 31' 42.5413" 109 o 29' 52.8210"5602.81 5599.33 TW4-31 37o 31' 43.8201" 109 o 29' 52.0153"5604.58 5601.10 Notes: amsl = above mean sea level Well H:\718000\hydtst13\Tables_0413.xls: Table 1 4/30/2013 TABLE 2 Slug Test Parameters Depth to Depth to Depth to Top Depth to Base Saturated Thickness Well Brushy Basin Water of Screen of Screen Above Brushy Basin (feet) (feet) (feet) (feet) (feet) TW4-28 102.5 34.6 45.0 105.0 67.9 TW4-29 88.0 70.4 51.0 91.0 17.7 TW4-30 86.0 76.4 50.0 90.0 9.6 TW4-31 101.0 82.9 64.0 104.0 18.1 H:\718000\hydtst13\Tables_0413.xls: Table2 4/30/2013 TABLE 3 Slug Test Results Bouwer-Rice Bouwer-Rice Test Saturated Thickness K (cm/s) Ss (1/ft) K (cm/s) K (cm/s) Ss (1/ft) K (cm/s) TW4-28 67.9 3.52E-04 1.22E-06 3.92E-04 3.29E-04 7.49E-06 4.07E-04 TW4-29 17.7 4.24E-05 1.19E-03 5.24E-05 4.52E-05 9.62E-04 5.66E-05 TW4-29 (lt) 17.7 NA NA 2.00E-05 NA NA 3.80E-05 TW4-30 9.6 1.44E-04 1.00E-02 6.22E-05 1.34E-04 1.00E-02 1.38E-04 TW4-30 (et) 9.6 NA NA 1.63E-04 NA NA 2.91E-04 TW4-30 (lt) 9.6 NA NA 1.12E-05 NA NA 1.41E-05 TW4-31 18.1 4.18E-05 2.54E-05 3.87E-05 3.24E-05 9.65E-05 4.01E-05 Notes: Bouwer-Rice = Unconfined Bouwer-Rice solution method in Aqtesolve™ cm/s = centimeters per second et = early time data lt = late time data ft = feet K = hydraulic conductivity KGS = Unconfined KGS solution method in Aqtesolve™ Ss= specific storage NA= Not Applicable Automatically Logged Data Hand Collected Data KGS KGS H:\718000\hydtst13\Tables_0413.xls: Table 3 4/30/2013 FIGURES HYDRO GEO CHEM, INC. APPROVED DATE REFERENCE FIGURE 1000 feet MW-25 MW-27 MW-31 TW4-01 TW4-02 TW4-03 TW4-04 TW4-05 TW4-06 TW4-09 TW4-10 TW4-11 TW4-12 TW4-13 TW4-14 MW-26 TW4-16 MW-32 TW4-18TW4-19 TW4-20 TW4-21 TW4-22 TW4-23 TW4-24 TW4-25 TW4-26 TW4-27 PIEZ-02 PIEZ-03 TWN-01 TWN-02 TWN-03 TWN-04 TWN-07 TWN-18 TW4-07 TW4-08 MW-04 TW4-28 TW4-30 TW4-31 TW4-29 EXPLANATION perched monitoring well temporary perched monitoring well perched piezometer MW-4 TW4-1 PIEZ-2 LOCATIONS OF NEW TEMPORARY PERCHED WELLS TW4-28, TW4-29, TW4-30, AND TW4-31 WHITE MESA SITE H:/718000/ nitrateast/newTWwells2013.srf TW4-28 new perched monitoring well TW4-27 temporary perched monitoring well installed October 2011 1SJS 4/19/2013 H:\718000\hydtst13\Corrected_displacement.xls: Figure 6 -0.1 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0 50 100 150 200 250 300 350 400 450 500 Minutes Di s p l a c e m e n t ( f e e t ) TW4-29 uncorrected TW4-29 corrected TW4-30 uncorrected TW4-30 corrected CORRECTED AND UNCORRECTED DISPLACEMENTSHYDRO GEO CHEM, INC.Approved FigureDateAuthorDateFile Name SJS 4/19/13 6Figure 64/19/13SJS APPENDIX A LITHOLOGIC LOGS APPENDIX B WELL DEVELOPMENT FIELD SHEETS APPENIDX C SLUG TEST PLOTS 0.01 0.1 1. 10. 100. 1000. 1.0E+4 0. 0.2 0.4 0.6 0.8 1. Time (min) Di s p l a c e m e n t ( f t ) WELL TEST ANALYSIS Data Set: H:\718000\hydtst13\tw28\tw28.aqt Date: 04/22/13 Time: 11:14:49 PROJECT INFORMATION Company: HGC Client: Energy Fuels Location: White Mesa Test Well: TW4-28 Test Date: 4-3-13 AQUIFER DATA Saturated Thickness: 67.9 ft WELL DATA (TW4-28) Initial Displacement: 0.72 ft Static Water Column Height: 67.9 ft Total Well Penetration Depth: 67.9 ft Screen Length: 62.5 ft Casing Radius: 0.167 ft Well Radius: 0.28 ft Gravel Pack Porosity: 0.3 SOLUTION Aquifer Model: Unconfined Solution Method: KGS Model Kr = 0.000352 cm/sec Ss = 1.218E-6 ft-1 Kz/Kr = 0.1 0. 3. 6. 9. 12. 15. 0.01 0.1 1. Time (min) Di s p l a c e m e n t ( f t ) WELL TEST ANALYSIS Data Set: H:\718000\hydtst13\tw28\tw28br.aqt Date: 04/22/13 Time: 11:17:00 PROJECT INFORMATION Company: HGC Client: Energy Fuels Location: White Mesa Test Well: TW4-28 Test Date: 4-3-13 AQUIFER DATA Saturated Thickness: 67.9 ft Anisotropy Ratio (Kz/Kr): 0.1 WELL DATA (TW4-28) Initial Displacement: 0.72 ft Static Water Column Height: 67.9 ft Total Well Penetration Depth: 67.9 ft Screen Length: 62.5 ft Casing Radius: 0.167 ft Well Radius: 0.28 ft Gravel Pack Porosity: 0.3 SOLUTION Aquifer Model: Unconfined Solution Method: Bouwer-Rice K = 0.0003917 cm/sec y0 = 0.4605 ft 0.01 0.1 1. 10. 100. 1000. 1.0E+4 0. 0.2 0.4 0.6 0.8 1. Time (min) Di s p l a c e m e n t ( f t ) WELL TEST ANALYSIS Data Set: H:\718000\hydtst13\tw28\tw28h.aqt Date: 04/22/13 Time: 11:17:21 PROJECT INFORMATION Company: HGC Client: Energy Fuels Location: White Mesa Test Well: TW4-28 Test Date: 4-3-13 AQUIFER DATA Saturated Thickness: 67.9 ft WELL DATA (TW4-28) Initial Displacement: 0.72 ft Static Water Column Height: 67.9 ft Total Well Penetration Depth: 67.9 ft Screen Length: 62.5 ft Casing Radius: 0.167 ft Well Radius: 0.28 ft Gravel Pack Porosity: 0.3 SOLUTION Aquifer Model: Unconfined Solution Method: KGS Model Kr = 0.0003287 cm/sec Ss = 7.495E-6 ft-1 Kz/Kr = 0.1 0. 4. 8. 12. 16. 20. 0.01 0.1 1. Time (min) Di s p l a c e m e n t ( f t ) WELL TEST ANALYSIS Data Set: H:\718000\hydtst13\tw28\tw28hbr.aqt Date: 04/22/13 Time: 11:43:53 PROJECT INFORMATION Company: HGC Client: Energy Fuels Location: White Mesa Test Well: TW4-28 Test Date: 4-3-13 AQUIFER DATA Saturated Thickness: 67.9 ft Anisotropy Ratio (Kz/Kr): 0.1 WELL DATA (TW4-28) Initial Displacement: 0.72 ft Static Water Column Height: 67.9 ft Total Well Penetration Depth: 67.9 ft Screen Length: 62.5 ft Casing Radius: 0.167 ft Well Radius: 0.28 ft Gravel Pack Porosity: 0.3 SOLUTION Aquifer Model: Unconfined Solution Method: Bouwer-Rice K = 0.0004071 cm/sec y0 = 0.4011 ft 0.01 0.1 1. 10. 100. 1000. 1.0E+4 0. 0.2 0.4 0.6 0.8 1. Time (min) Di s p l a c e m e n t ( f t ) WELL TEST ANALYSIS Data Set: H:\718000\hydtst13\tw29\tw29.aqt Date: 04/19/13 Time: 08:58:41 PROJECT INFORMATION Company: HGC Client: Energy Fuels Location: White Mesa Test Well: TW4-29 Test Date: 4-3-13 AQUIFER DATA Saturated Thickness: 17.7 ft WELL DATA (TW4-29) Initial Displacement: 0.7 ft Static Water Column Height: 17.7 ft Total Well Penetration Depth: 17.7 ft Screen Length: 17.7 ft Casing Radius: 0.167 ft Well Radius: 0.28 ft Gravel Pack Porosity: 0.3 SOLUTION Aquifer Model: Unconfined Solution Method: KGS Model Kr = 4.241E-5 cm/sec Ss = 0.001195 ft-1 Kz/Kr = 0.1 0. 60. 120. 180. 240. 300. 0.01 0.1 1. Time (min) Di s p l a c e m e n t ( f t ) WELL TEST ANALYSIS Data Set: H:\718000\hydtst13\tw29\tw29br.aqt Date: 04/19/13 Time: 08:59:02 PROJECT INFORMATION Company: HGC Client: Energy Fuels Location: White Mesa Test Well: TW4-29 Test Date: 4-3-13 AQUIFER DATA Saturated Thickness: 17.7 ft Anisotropy Ratio (Kz/Kr): 0.1 WELL DATA (TW4-29) Initial Displacement: 0.7 ft Static Water Column Height: 17.7 ft Total Well Penetration Depth: 17.7 ft Screen Length: 17.7 ft Casing Radius: 0.167 ft Well Radius: 0.28 ft Gravel Pack Porosity: 0.3 SOLUTION Aquifer Model: Unconfined Solution Method: Bouwer-Rice K = 5.243E-5 cm/sec y0 = 0.383 ft 0. 60. 120. 180. 240. 300. 0.01 0.1 1. Time (min) Di s p l a c e m e n t ( f t ) WELL TEST ANALYSIS Data Set: H:\718000\hydtst13\tw29\tw29brlt.aqt Date: 04/19/13 Time: 08:59:17 PROJECT INFORMATION Company: HGC Client: Energy Fuels Location: White Mesa Test Well: TW4-29 Test Date: 4-3-13 AQUIFER DATA Saturated Thickness: 17.7 ft Anisotropy Ratio (Kz/Kr): 0.1 WELL DATA (TW4-29) Initial Displacement: 0.7 ft Static Water Column Height: 17.7 ft Total Well Penetration Depth: 17.7 ft Screen Length: 17.7 ft Casing Radius: 0.167 ft Well Radius: 0.28 ft Gravel Pack Porosity: 0.3 SOLUTION Aquifer Model: Unconfined Solution Method: Bouwer-Rice K = 2.003E-5 cm/sec y0 = 0.1268 ft 0.01 0.1 1. 10. 100. 1000. 1.0E+4 0. 0.2 0.4 0.6 0.8 1. Time (min) Di s p l a c e m e n t ( f t ) WELL TEST ANALYSIS Data Set: H:\718000\hydtst13\tw29\tw29h.aqt Date: 04/19/13 Time: 08:59:33 PROJECT INFORMATION Company: HGC Client: Energy Fuels Location: White Mesa Test Well: TW4-29 Test Date: 4-3-13 AQUIFER DATA Saturated Thickness: 17.7 ft WELL DATA (TW4-29) Initial Displacement: 0.7 ft Static Water Column Height: 17.7 ft Total Well Penetration Depth: 17.7 ft Screen Length: 17.7 ft Casing Radius: 0.167 ft Well Radius: 0.28 ft Gravel Pack Porosity: 0.3 SOLUTION Aquifer Model: Unconfined Solution Method: KGS Model Kr = 4.517E-5 cm/sec Ss = 0.0009622 ft-1 Kz/Kr = 0.1 0. 60. 120. 180. 240. 300. 0.01 0.1 1. Time (min) Di s p l a c e m e n t ( f t ) WELL TEST ANALYSIS Data Set: H:\718000\hydtst13\tw29\tw29hbr.aqt Date: 04/19/13 Time: 08:59:52 PROJECT INFORMATION Company: HGC Client: Energy Fuels Location: White Mesa Test Well: TW4-29 Test Date: 4-3-13 AQUIFER DATA Saturated Thickness: 17.7 ft Anisotropy Ratio (Kz/Kr): 0.1 WELL DATA (TW4-29) Initial Displacement: 0.7 ft Static Water Column Height: 17.7 ft Total Well Penetration Depth: 17.7 ft Screen Length: 17.7 ft Casing Radius: 0.167 ft Well Radius: 0.28 ft Gravel Pack Porosity: 0.3 SOLUTION Aquifer Model: Unconfined Solution Method: Bouwer-Rice K = 5.661E-5 cm/sec y0 = 0.3922 ft 0. 60. 120. 180. 240. 300. 0.01 0.1 1. Time (min) Di s p l a c e m e n t ( f t ) WELL TEST ANALYSIS Data Set: H:\718000\hydtst13\tw29\tw29hbrlt.aqt Date: 04/19/13 Time: 09:00:11 PROJECT INFORMATION Company: HGC Client: Energy Fuels Location: White Mesa Test Well: TW4-29 Test Date: 4-3-13 AQUIFER DATA Saturated Thickness: 17.7 ft Anisotropy Ratio (Kz/Kr): 0.1 WELL DATA (TW4-29) Initial Displacement: 0.7 ft Static Water Column Height: 17.7 ft Total Well Penetration Depth: 17.7 ft Screen Length: 17.7 ft Casing Radius: 0.167 ft Well Radius: 0.28 ft Gravel Pack Porosity: 0.3 SOLUTION Aquifer Model: Unconfined Solution Method: Bouwer-Rice K = 3.8E-5 cm/sec y0 = 0.265 ft 0.01 0.1 1. 10. 100. 1000. 0. 0.2 0.4 0.6 0.8 1. Time (min) Di s p l a c e m e n t ( f t ) WELL TEST ANALYSIS Data Set: H:\718000\hydtst13\tw30\tw30.aqt Date: 04/19/13 Time: 09:00:46 PROJECT INFORMATION Company: HGC Client: Energy Fuels Location: White Mesa Test Well: TW4-30 Test Date: 4-3-13 AQUIFER DATA Saturated Thickness: 9.61 ft WELL DATA (TW4-30) Initial Displacement: 0.44 ft Static Water Column Height: 9.61 ft Total Well Penetration Depth: 9.61 ft Screen Length: 9.61 ft Casing Radius: 0.167 ft Well Radius: 0.28 ft Gravel Pack Porosity: 0.3 SOLUTION Aquifer Model: Unconfined Solution Method: KGS Model Kr = 0.0001441 cm/sec Ss = 0.01 ft-1 Kz/Kr = 0.1 0. 60. 120. 180. 240. 300. 0.01 0.1 1. Time (min) Di s p l a c e m e n t ( f t ) WELL TEST ANALYSIS Data Set: H:\718000\hydtst13\tw30\tw30br.aqt Date: 04/19/13 Time: 09:01:00 PROJECT INFORMATION Company: HGC Client: Energy Fuels Location: White Mesa Test Well: TW4-30 Test Date: 4-3-13 AQUIFER DATA Saturated Thickness: 9.61 ft Anisotropy Ratio (Kz/Kr): 0.1 WELL DATA (TW4-30) Initial Displacement: 0.44 ft Static Water Column Height: 9.61 ft Total Well Penetration Depth: 9.61 ft Screen Length: 9.61 ft Casing Radius: 0.167 ft Well Radius: 0.28 ft Gravel Pack Porosity: 0.3 SOLUTION Aquifer Model: Unconfined Solution Method: Bouwer-Rice K = 6.218E-5 cm/sec y0 = 0.1055 ft 0. 20. 40. 60. 80. 100. 0.01 0.1 1. Time (min) Di s p l a c e m e n t ( f t ) WELL TEST ANALYSIS Data Set: H:\718000\hydtst13\tw30\tw30bret.aqt Date: 04/19/13 Time: 09:01:16 PROJECT INFORMATION Company: HGC Client: Energy Fuels Location: White Mesa Test Well: TW4-30 Test Date: 4-3-13 AQUIFER DATA Saturated Thickness: 9.61 ft Anisotropy Ratio (Kz/Kr): 0.1 WELL DATA (TW4-30) Initial Displacement: 0.44 ft Static Water Column Height: 9.61 ft Total Well Penetration Depth: 9.61 ft Screen Length: 9.61 ft Casing Radius: 0.167 ft Well Radius: 0.28 ft Gravel Pack Porosity: 0.3 SOLUTION Aquifer Model: Unconfined Solution Method: Bouwer-Rice K = 0.0001628 cm/sec y0 = 0.1833 ft 0. 60. 120. 180. 240. 300. 0.01 0.1 1. Time (min) Di s p l a c e m e n t ( f t ) WELL TEST ANALYSIS Data Set: H:\718000\hydtst13\tw30\tw30brlt.aqt Date: 04/19/13 Time: 09:01:35 PROJECT INFORMATION Company: HGC Client: Energy Fuels Location: White Mesa Test Well: TW4-30 Test Date: 4-3-13 AQUIFER DATA Saturated Thickness: 9.61 ft Anisotropy Ratio (Kz/Kr): 0.1 WELL DATA (TW4-30) Initial Displacement: 0.44 ft Static Water Column Height: 9.61 ft Total Well Penetration Depth: 9.61 ft Screen Length: 9.61 ft Casing Radius: 0.167 ft Well Radius: 0.28 ft Gravel Pack Porosity: 0.3 SOLUTION Aquifer Model: Unconfined Solution Method: Bouwer-Rice K = 1.123E-5 cm/sec y0 = 0.03493 ft 0.01 0.1 1. 10. 100. 1000. 1.0E+4 0. 0.2 0.4 0.6 0.8 1. Time (min) Di s p l a c e m e n t ( f t ) WELL TEST ANALYSIS Data Set: H:\718000\hydtst13\tw30\tw30h.aqt Date: 04/19/13 Time: 09:01:51 PROJECT INFORMATION Company: HGC Client: Energy Fuels Location: White Mesa Test Well: TW4-30 Test Date: 4-3-13 AQUIFER DATA Saturated Thickness: 9.61 ft WELL DATA (TW4-30) Initial Displacement: 0.44 ft Static Water Column Height: 9.61 ft Total Well Penetration Depth: 9.61 ft Screen Length: 9.61 ft Casing Radius: 0.167 ft Well Radius: 0.28 ft Gravel Pack Porosity: 0.3 SOLUTION Aquifer Model: Unconfined Solution Method: KGS Model Kr = 0.0001342 cm/sec Ss = 0.01 ft-1 Kz/Kr = 0.1 0. 40. 80. 120. 160. 200. 0.01 0.1 1. Time (min) Di s p l a c e m e n t ( f t ) WELL TEST ANALYSIS Data Set: H:\718000\hydtst13\tw30\tw30hbr.aqt Date: 04/22/13 Time: 11:06:51 PROJECT INFORMATION Company: HGC Client: Energy Fuels Location: White Mesa Test Well: TW4-30 Test Date: 4-3-13 AQUIFER DATA Saturated Thickness: 9.61 ft Anisotropy Ratio (Kz/Kr): 0.1 WELL DATA (TW4-30) Initial Displacement: 0.44 ft Static Water Column Height: 9.61 ft Total Well Penetration Depth: 9.61 ft Screen Length: 9.61 ft Casing Radius: 0.167 ft Well Radius: 0.28 ft Gravel Pack Porosity: 0.3 SOLUTION Aquifer Model: Unconfined Solution Method: Bouwer-Rice K = 0.0001375 cm/sec y0 = 0.1833 ft 0. 20. 40. 60. 80. 100. 0.01 0.1 1. Time (min) Di s p l a c e m e n t ( f t ) WELL TEST ANALYSIS Data Set: H:\718000\hydtst13\tw30\tw30hbret.aqt Date: 04/22/13 Time: 11:09:22 PROJECT INFORMATION Company: HGC Client: Energy Fuels Location: White Mesa Test Well: TW4-30 Test Date: 4-3-13 AQUIFER DATA Saturated Thickness: 9.61 ft Anisotropy Ratio (Kz/Kr): 0.1 WELL DATA (TW4-30) Initial Displacement: 0.44 ft Static Water Column Height: 9.61 ft Total Well Penetration Depth: 9.61 ft Screen Length: 9.61 ft Casing Radius: 0.167 ft Well Radius: 0.28 ft Gravel Pack Porosity: 0.3 SOLUTION Aquifer Model: Unconfined Solution Method: Bouwer-Rice K = 0.0002907 cm/sec y0 = 0.265 ft 0. 40. 80. 120. 160. 200. 0.01 0.1 1. Time (min) Di s p l a c e m e n t ( f t ) WELL TEST ANALYSIS Data Set: H:\718000\hydtst13\tw30\tw30hbrlt.aqt Date: 04/19/13 Time: 09:02:41 PROJECT INFORMATION Company: HGC Client: Energy Fuels Location: White Mesa Test Well: TW4-30 Test Date: 4-3-13 AQUIFER DATA Saturated Thickness: 9.61 ft Anisotropy Ratio (Kz/Kr): 0.1 WELL DATA (TW4-30) Initial Displacement: 0.44 ft Static Water Column Height: 9.61 ft Total Well Penetration Depth: 9.61 ft Screen Length: 9.61 ft Casing Radius: 0.167 ft Well Radius: 0.28 ft Gravel Pack Porosity: 0.3 SOLUTION Aquifer Model: Unconfined Solution Method: Bouwer-Rice K = 1.41E-5 cm/sec y0 = 0.06656 ft 0.01 0.1 1. 10. 100. 1000. 1.0E+4 0. 0.2 0.4 0.6 0.8 1. Time (min) Di s p l a c e m e n t ( f t ) WELL TEST ANALYSIS Data Set: H:\718000\hydtst13\tw31\tw31.aqt Date: 04/19/13 Time: 09:03:02 PROJECT INFORMATION Company: HGC Client: Energy Fuels Location: White Mesa Test Well: TW4-31 Test Date: 4-3-13 AQUIFER DATA Saturated Thickness: 18.1 ft WELL DATA (TW4-31) Initial Displacement: 0.7 ft Static Water Column Height: 18.1 ft Total Well Penetration Depth: 18.1 ft Screen Length: 18.1 ft Casing Radius: 0.167 ft Well Radius: 0.28 ft Gravel Pack Porosity: 0.3 SOLUTION Aquifer Model: Unconfined Solution Method: KGS Model Kr = 4.177E-5 cm/sec Ss = 2.538E-5 ft-1 Kz/Kr = 0.1 0. 60. 120. 180. 240. 300. 0.001 0.01 0.1 1. Time (min) Di s p l a c e m e n t ( f t ) WELL TEST ANALYSIS Data Set: H:\718000\hydtst13\tw31\tw31br.aqt Date: 04/19/13 Time: 09:03:15 PROJECT INFORMATION Company: HGC Client: Energy Fuels Location: White Mesa Test Well: TW4-31 Test Date: 4-3-13 AQUIFER DATA Saturated Thickness: 18.1 ft Anisotropy Ratio (Kz/Kr): 0.1 WELL DATA (TW4-31) Initial Displacement: 0.7 ft Static Water Column Height: 18.1 ft Total Well Penetration Depth: 18.1 ft Screen Length: 18.1 ft Casing Radius: 0.167 ft Well Radius: 0.28 ft Gravel Pack Porosity: 0.3 SOLUTION Aquifer Model: Unconfined Solution Method: Bouwer-Rice K = 3.867E-5 cm/sec y0 = 0.5287 ft 0.01 0.1 1. 10. 100. 1000. 1.0E+4 0. 0.2 0.4 0.6 0.8 1. Time (min) Di s p l a c e m e n t ( f t ) WELL TEST ANALYSIS Data Set: H:\718000\hydtst13\tw31\tw31h.aqt Date: 04/19/13 Time: 09:03:32 PROJECT INFORMATION Company: HGC Client: Energy Fuels Location: White Mesa Test Well: TW4-31 Test Date: 4-3-13 AQUIFER DATA Saturated Thickness: 18.1 ft WELL DATA (TW4-31) Initial Displacement: 0.7 ft Static Water Column Height: 18.1 ft Total Well Penetration Depth: 18.1 ft Screen Length: 18.1 ft Casing Radius: 0.167 ft Well Radius: 0.28 ft Gravel Pack Porosity: 0.3 SOLUTION Aquifer Model: Unconfined Solution Method: KGS Model Kr = 3.24E-5 cm/sec Ss = 9.65E-5 ft-1 Kz/Kr = 0.1 0. 40. 80. 120. 160. 200. 0.01 0.1 1. Time (min) Di s p l a c e m e n t ( f t ) WELL TEST ANALYSIS Data Set: H:\718000\hydtst13\tw31\tw31hbr.aqt Date: 04/19/13 Time: 09:03:44 PROJECT INFORMATION Company: HGC Client: Energy Fuels Location: White Mesa Test Well: TW4-31 Test Date: 4-3-13 AQUIFER DATA Saturated Thickness: 18.1 ft Anisotropy Ratio (Kz/Kr): 0.1 WELL DATA (TW4-31) Initial Displacement: 0.7 ft Static Water Column Height: 18.1 ft Total Well Penetration Depth: 18.1 ft Screen Length: 18.1 ft Casing Radius: 0.167 ft Well Radius: 0.28 ft Gravel Pack Porosity: 0.3 SOLUTION Aquifer Model: Unconfined Solution Method: Bouwer-Rice K = 4.013E-5 cm/sec y0 = 0.5537 ft APPENDIX D SLUG TEST DATA TW28DSP.TXT TW4-28 elapsed time displacement (min) (ft) 0.01 0.72 0.05 0.34 0.10 0.83 0.15 0.74 0.20 0.60 0.25 0.58 0.30 0.56 0.35 0.54 0.40 0.52 0.45 0.51 0.55 0.48 0.70 0.44 0.90 0.37 1.15 0.34 1.45 0.28 1.80 0.23 2.20 0.19 2.65 0.15 3.15 0.12 3.70 0.09 4.30 0.08 4.95 0.06 5.65 0.04 6.40 0.04 7.20 0.03 8.05 0.02 8.95 0.02 9.90 0.02 10.90 0.01 11.95 0.00 13.05 0.01 14.20 0.00 15.40 0.01 16.65 0.01 17.95 0.01 19.30 0.01 20.70 0.01 22.15 0.01 23.65 0.01 25.20 0.01 26.80 0.01 28.45 0.01  Page 1 TW28HDSP.TXT TW4-28 elapsed time displacement (min) (ft, hand collected) 0.25 0.54 0.58 0.45 0.92 0.36 1.28 0.27 1.48 0.24 1.8 0.2 2.18 0.17 2.5 0.14 2.97 0.11 3.47 0.09 4 0.07 4.53 0.06 4.8 0.07 5.22 0.05 5.68 0.04 6.05 0.03 7.2 0.02 10.8 0.01 18.2 0  Page 1 tw29dsp.txt TW4-29 elapsed time displacement displacement (min) (ft) (20% correction) 0.00 1.318 1.3180E+00 0.05 0.051 5.1000E-02 0.10 0.733 7.3300E-01 0.15 0.67 6.7000E-01 0.20 0.663 6.6300E-01 0.25 0.651 6.5100E-01 0.30 0.644 6.4400E-01 0.35 0.645 6.4500E-01 0.40 0.634 6.3400E-01 0.45 0.636 6.3600E-01 0.55 0.618 6.1800E-01 0.70 0.604 6.0400E-01 0.90 0.595 5.9500E-01 1.15 0.583 5.8300E-01 1.45 0.566 5.6580E-01 1.80 0.554 5.5380E-01 2.20 0.53 5.2980E-01 2.65 0.519 5.1880E-01 3.15 0.508 5.0780E-01 3.70 0.487 4.8660E-01 4.30 0.467 4.6660E-01 4.95 0.459 4.5860E-01 5.65 0.43 4.2960E-01 6.40 0.415 4.1480E-01 7.20 0.401 4.0080E-01 8.05 0.39 3.8980E-01 8.95 0.375 3.7500E-01 9.90 0.348 3.4800E-01 10.90 0.33 3.3020E-01 11.95 0.32 3.2040E-01 13.05 0.305 3.0560E-01 14.20 0.299 2.9980E-01 15.40 0.279 2.8000E-01 16.65 0.267 2.6780E-01 17.95 0.254 2.5460E-01 19.30 0.238 2.3860E-01 20.70 0.23 2.3060E-01 22.15 0.216 2.1680E-01 23.65 0.209 2.0980E-01 25.20 0.196 1.9700E-01 26.80 0.186 1.8660E-01 28.45 0.167 1.6740E-01 30.15 0.161 1.6100E-01 31.90 0.158 1.5840E-01 33.70 0.151 1.5180E-01 35.55 0.139 1.4000E-01 37.45 0.136 1.3680E-01 39.40 0.132 1.3260E-01 41.40 0.122 1.2260E-01 43.45 0.121 1.2180E-01 45.55 0.108 1.0900E-01 47.70 0.11 1.1120E-01 49.90 0.105 1.0640E-01 52.15 0.094 9.4800E-02 54.45 0.081 8.1200E-02 56.80 0.08 8.0400E-02 59.20 0.085 8.5800E-02 61.65 0.071 7.2200E-02 64.15 0.072 7.3400E-02 66.70 0.076 7.7000E-02 Page 1 tw29dsp.txt 69.30 0.061 6.1600E-02 71.95 0.062 6.2400E-02 74.65 0.067 6.7000E-02 77.40 0.065 6.5000E-02 80.20 0.053 5.3000E-02 83.05 0.053 5.3000E-02 85.95 0.051 5.1000E-02 88.90 0.045 4.5000E-02 91.90 0.049 4.8200E-02 94.95 0.048 4.6200E-02 98.05 0.044 4.2400E-02 101.20 0.051 4.9600E-02 104.40 0.04 3.8600E-02 107.65 0.048 4.6400E-02 110.95 0.039 3.7000E-02 114.30 0.04 3.7800E-02 117.70 0.045 4.2400E-02 121.15 0.033 3.0400E-02 124.65 0.033 3.0600E-02 128.20 0.044 4.1400E-02 131.80 0.042 3.9200E-02 135.45 0.034 3.1200E-02 139.15 0.032 2.8400E-02 142.90 0.029 2.5600E-02 146.70 0.03 2.6600E-02 150.55 0.035 3.1400E-02 154.45 0.024 2.0400E-02 158.40 0.029 2.5000E-02 162.40 0.026 2.1800E-02 166.45 0.025 2.1200E-02 170.55 0.025 2.1600E-02 174.70 0.031 2.6400E-02 178.90 0.032 2.8200E-02 183.15 0.024 2.0000E-02 187.45 0.021 1.6200E-02 191.80 0.024 1.8200E-02 196.20 0.02 1.4000E-02 200.65 0.022 1.6600E-02 205.15 0.021 1.6800E-02 209.70 0.028 2.2400E-02 214.30 0.022 1.6400E-02 218.95 0.021 1.5000E-02 223.65 0.024 1.7600E-02 228.40 0.022 1.6200E-02 233.20 0.02 1.3200E-02 238.05 0.021 1.3200E-02 242.95 0.033 2.5200E-02 247.90 0.026 1.8200E-02 252.90 0.021 1.2600E-02 257.95 0.019 1.0400E-02 263.05 0.022 1.3400E-02 268.20 0.024 1.4200E-02 273.40 0.022 1.2200E-02 278.65 0.02 9.8000E-03 283.95 0.027 1.6400E-02 289.30 0.022 1.0000E-02 294.70 0.023 1.0000E-02 300.15 0.022 9.4000E-03 305.65 0.021 8.4000E-03 311.20 0.025 1.2200E-02 316.80 0.02 7.0000E-03 322.45 0.021 6.8000E-03 328.15 0.022 7.6000E-03 Page 2 tw29dsp.txt 333.90 0.03 1.4800E-02 339.70 0.02 6.0000E-03 345.55 0.021 5.0000E-03 351.45 0.018 3.4000E-03 357.40 0.014 2.0000E-04 363.40 0.017 2.8000E-03 369.45 0.015 1.0000E-03 375.55 0.014 -6.0000E-04 381.70 0.019 4.0000E-03 387.90 0.018 3.8000E-03 394.15 0.015 2.0000E-04 400.45 0.016 1.0000E-03 406.80 0.017 8.0000E-04 413.20 0.019 3.4000E-03  Page 3 TW29HDSP.TXT TW4-29 elapsed time displacement (min) (ft, hand collected) 0.28 0.67 0.53 0.64 0.67 0.62 0.92 0.59 1.25 0.57 1.53 0.56 2 0.54 2.27 0.53 2.55 0.52 2.82 0.51 3.17 0.5 3.65 0.48 4.13 0.47 4.47 0.46 4.95 0.45 5.28 0.44 5.58 0.43 5.9 0.42 6.5 0.41 7.38 0.39 8 0.38 8.68 0.37 9.38 0.36 10.18 0.35 11.2 0.33 11.9 0.32 12.6 0.31 13.6 0.3 14.16 0.29 15.07 0.28 16.07 0.27 17.03 0.26 18.1 0.25 19.2 0.24 21 0.22 23 0.21 25 0.19 27 0.18 29 0.17 31 0.16 36 0.14 41 0.12 46 0.11 51 0.1 56 0.09 61 0.08 915 -0.12  Page 1 TW30DSP.TXT TW4-30 elapsed time displacement displacement (min) (ft) (20% correction) 0.00 0.552 5.5200E-01 0.05 0.327 3.2700E-01 0.10 0.397 3.9700E-01 0.15 0.388 3.8800E-01 0.20 0.373 3.7300E-01 0.25 0.363 3.6300E-01 0.30 0.352 3.5200E-01 0.35 0.346 3.4600E-01 0.40 0.336 3.3600E-01 0.45 0.332 3.3200E-01 0.55 0.321 3.2080E-01 0.70 0.305 3.0480E-01 0.90 0.289 2.8880E-01 1.15 0.27 2.6980E-01 1.45 0.252 2.5180E-01 1.80 0.239 2.3860E-01 2.20 0.22 2.1960E-01 2.65 0.203 2.0240E-01 3.15 0.191 1.9040E-01 3.70 0.173 1.7240E-01 4.30 0.165 1.6440E-01 4.95 0.156 1.5560E-01 5.65 0.146 1.4560E-01 6.40 0.137 1.3680E-01 7.20 0.127 1.2700E-01 8.05 0.118 1.1820E-01 8.95 0.112 1.1220E-01 9.90 0.107 1.0720E-01 10.90 0.1 1.0020E-01 11.95 0.093 9.3200E-02 13.05 0.091 9.1200E-02 14.20 0.084 8.4400E-02 15.40 0.082 8.2600E-02 16.65 0.07 7.0800E-02 17.95 0.073 7.4000E-02 19.30 0.072 7.3200E-02 20.70 0.063 6.4000E-02 22.15 0.065 6.5800E-02 23.65 0.061 6.1800E-02 25.20 0.068 6.8800E-02 26.80 0.062 6.3000E-02 28.45 0.053 5.4200E-02 30.15 0.054 5.5200E-02 31.90 0.051 5.2200E-02 33.70 0.048 4.9200E-02 35.55 0.042 4.3200E-02 37.45 0.036 3.7200E-02 39.40 0.047 4.8200E-02 41.40 0.046 4.7200E-02 43.45 0.042 4.3200E-02 45.55 0.038 3.9400E-02 47.70 0.039 4.0600E-02 49.90 0.039 4.0200E-02 52.15 0.036 3.6400E-02 54.45 0.036 3.6000E-02 56.80 0.033 3.3400E-02 59.20 0.032 3.2800E-02 61.65 0.031 3.2000E-02 64.15 0.028 2.9200E-02 66.70 0.027 2.7800E-02 Page 1 TW30DSP.TXT 69.30 0.027 2.7600E-02 71.95 0.026 2.6600E-02 74.65 0.03 3.0800E-02 77.40 0.026 2.7000E-02 80.20 0.03 3.1400E-02 83.05 0.022 2.4000E-02 85.95 0.025 2.7000E-02 88.90 0.016 1.8000E-02 91.90 0.02 2.1800E-02 94.95 0.02 2.1800E-02 98.05 0.016 1.8000E-02 101.20 0.014 1.6000E-02 104.40 0.022 2.4000E-02 107.65 0.019 2.1000E-02 110.95 0.017 1.9400E-02 114.30 0.017 1.9400E-02 117.70 0.019 2.0800E-02 121.15 0.021 2.2400E-02 124.65 0.019 2.0200E-02 128.20 0.012 1.3600E-02 131.80 0.016 1.8200E-02 135.45 0.018 2.0400E-02 139.15 0.019 2.1200E-02 142.90 0.012 1.4400E-02 146.70 0.016 1.8000E-02 150.55 0.016 1.8000E-02 154.45 0.016 1.8400E-02 158.40 0.012 1.4200E-02 162.40 0.018 2.0400E-02 166.45 0.017 1.9800E-02 170.55 0.017 1.9600E-02 174.70 0.007 8.8000E-03 178.90 0.017 1.9600E-02 183.15 0.013 1.6000E-02 187.45 0.013 1.5400E-02 191.80 0.015 1.6800E-02 196.20 0.013 1.4600E-02 200.65 0 1.6000E-03 205.15 0.013 1.4600E-02 209.70 0.024 2.5200E-02 214.30 0.018 1.7800E-02 218.95 0.019 1.9200E-02 223.65 0.011 1.1200E-02 228.40 0.007 6.8000E-03 233.20 0.014 1.3400E-02 238.05 0.013 1.1800E-02 242.95 0.015 1.4200E-02 247.90 0.016 1.5000E-02 252.90 0.013 1.1800E-02 257.95 0.016 1.4000E-02 263.05 0.015 1.3400E-02 268.20 0.012 1.0000E-02 273.40 0.018 1.6000E-02 278.65 0.013 1.0400E-02 283.95 0.014 1.1400E-02 289.30 0.018 1.6200E-02 294.70 0.012 9.2000E-03 300.15 0.017 1.4800E-02 305.65 0.014 1.0800E-02 311.20 0.012 7.8000E-03 316.80 0.013 8.8000E-03 322.45 0.014 1.1000E-02 328.15 0.013 9.2000E-03 Page 2 TW30DSP.TXT 333.90 0.016 1.2000E-02 339.70 0.015 1.0400E-02 345.55 0.017 1.2400E-02 351.45 0.015 1.0000E-02  Page 3 TW30HDSP.TXT TW4-30 elapsed time displacement (min) (ft, hand collected) 0.35 0.38 0.58 0.33 0.83 0.31 1.08 0.29 1.27 0.28 1.52 0.27 1.88 0.26 2.15 0.24 2.52 0.23 3 0.21 3.3 0.2 3.67 0.19 4.27 0.18 4.78 0.17 5.18 0.16 6.08 0.15 6.7 0.14 7.5 0.13 9.12 0.12 10.8 0.11 16.1 0.09 18.4 0.08 64 0.05 106 0.04 179 0.03 1005 -0.1  Page 1 TW31DSP.TXT TW4-31 elapsed time displacement (min) (ft) 0.00 2.397 0.05 0.55 0.10 0.744 0.15 0.68 0.20 0.675 0.25 0.688 0.30 0.679 0.35 0.687 0.40 0.673 0.45 0.666 0.55 0.669 0.70 0.66 0.90 0.661 1.15 0.643 1.45 0.641 1.80 0.631 2.20 0.616 2.65 0.599 3.15 0.588 3.70 0.584 4.30 0.573 4.95 0.562 5.65 0.549 6.40 0.527 7.20 0.524 8.05 0.514 8.95 0.494 9.90 0.487 10.90 0.472 11.95 0.456 13.05 0.447 14.20 0.433 15.40 0.408 16.65 0.409 17.95 0.399 19.30 0.384 20.70 0.37 22.15 0.362 23.65 0.35 25.20 0.332 26.80 0.324 28.45 0.306 30.15 0.291 31.90 0.286 33.70 0.278 35.55 0.265 37.45 0.245 39.40 0.247 41.40 0.227 43.45 0.222 45.55 0.213 47.70 0.204 49.90 0.191 52.15 0.181 54.45 0.178 56.80 0.162 59.20 0.155 61.65 0.155 64.15 0.151 66.70 0.146 Page 1 TW31DSP.TXT 69.30 0.131 71.95 0.12 74.65 0.116 77.40 0.112 80.20 0.107 83.05 0.103 85.95 0.093 88.90 0.086 91.90 0.081 94.95 0.079 98.05 0.074 101.20 0.075 104.40 0.076 107.65 0.061 110.95 0.055 114.30 0.053 117.70 0.049 121.15 0.042 124.65 0.044 128.20 0.042 131.80 0.04 135.45 0.037 139.15 0.031 142.90 0.034 146.70 0.028 150.55 0.027 154.45 0.02 158.40 0.026 162.40 0.021 166.45 0.02 170.55 0.018 174.70 0.024 178.90 0.022 183.15 0.013 187.45 0.012 191.80 0.014 196.20 0.007 200.65 0.01 205.15 -0.001 209.70 0.004 214.30 0.007 218.95 0.004 223.65 0.004 228.40 0.003 233.20 0.014 238.05 0.008 242.95 0.006 247.90 0.006 252.90 0.005 257.95 0.004 263.05 0.006 268.20 0.004 273.40 -0.001 278.65 0 283.95 0.003  Page 2 TW31HDSP.TXT TW4-31` elapsed time displacement (min) (ft, hand collected) 0.5 0.68 0.75 0.67 1.08 0.66 1.4 0.65 1.65 0.64 1.97 0.63 2.23 0.62 2.68 0.61 3.07 0.6 3.65 0.59 4.08 0.58 4.53 0.57 5.12 0.56 5.7 0.55 6.33 0.54 7 0.53 7.92 0.52 8.5 0.51 9.23 0.5 10.2 0.49 10.92 0.48 11.63 0.47 12.58 0.46 13.33 0.45 14.25 0.44 15 0.43 15.7 0.42 16.73 0.41 17.65 0.4 18.7 0.39 19.97 0.38 21.27 0.37 22.55 0.36 23.92 0.35 24.9 0.34 26.23 0.33 27.52 0.32 28 0.31 30.22 0.3 31.71 0.29 33.6 0.28 35.37 0.27 36.92 0.26 38.78 0.25 40.82 0.24 42.78 0.23 45.17 0.22 47.4 0.21 50.8 0.2 55 0.18 60 0.16 65 0.15 75 0.11 170 0.05  Page 1