Source Zone Delineation Demonstration Report - Triad Resource ...

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Table 5-7. Comparison of Measured and Predicted Vacuum DistributionMonitoringWell 1Distance fromExtraction Well(ft)MeasuredVacuum(inches of water)PredictedVacuum 2(inches of water)U12-VP1 31.6 2.50 2.50U12-VP3 58.0 1.40 1.10U12-VP4 59.5 0.02 0.50U12-VP5 46.8 2.40 1.50U12-VP6 49.5 0.12 1.30U12-VP7 66.8 0.90 0.801 Vapor extraction conducted at U12-VP2.2 Predicted vacuum at 40 to 45 feet bgs during vapor extraction from U12-VP2 for 6 hours at 12 scfmfor two-layer permeability field (10 and 100 Darcy) using VENT3D.5.2.3.2 Sequential Forward ModelingPredicted TCE concentration profiles in the vapor phase were generated for each extraction well using asequential forward modeling scheme and various source configurations (areal extent, depth,concentration, and location). A summary of the modeling scenarios investigated is provided in Table 5-8and the spatial location of each simulated source area in relation to the vapor extraction/monitoring wellsis shown in Figures 5-40a through 5-40e. During the investigation, over 160 scenarios were numericallysimulated. Due to the elevated concentrations of TCE observed in extraction wells U12-VP1 and U12-VP2, these wells were used for the initial comparison between the predicted TCE concentration profilesand the concentration profiles observed during vapor extraction operations at OU 12. This demonstrationfocused on the effect of single homogeneous source zones in relation to predicted TCE concentrationprofiles in the vapor phase; the effect of multiple and/or heterogenous sources were not investigated aspart of this demonstration. A formal inversion scheme would be required to assess the effect of multiple,heterogeneous sources due to the vast number of permutations associated with more than one source zone.A comparison between the predicted and the measured TCE concentration profiles in the vapor phase atextraction wells U12-VP1 and U12-VP2 for source area 1 is shown in Figure 5-41. Source area 1 islocated approximately 43 feet north of U12-VP1 and 13 feet north of U12-VP2, and represents asimulated TCE source 20 feet by 10 feet in areal extent and 10 to 15 feet thick. An initial sourceconcentration ranging from 100 to 10,000 mg/kg prior to a 30-year diffusion period was investigated. Asthe initial source concentration is increased from 100 mg/kg to 4,500 mg/kg, the predicted TCEconcentration profile for U12-VP1 changes from a downward to an upward trend, characteristic of thatobserved during actual vapor extraction operations. Although the predicted concentration profile issimilar to that observed in the field, the predicted TCE concentrations are approximately two times themeasured values. Additionally, the predicted response at U12-VP2 is significantly different than themeasured response.March 2003 5-59 OU 12 Demonstration ReportFinal
Table 5-8. OU 12 SVE Sequential Forward Modeling ScenariosFile Name Extraction Source Source Source LocationSource Source 30-Year PermeabilityWell Distance i-node j-node k-node Size Concentration Diffusionfrom Well (ft) (mg/kg)U12-VP1/Source Area #1twolayer_vp1_1 U12-VP1 SA1 43 ft N 23-26 28-29 7-9 20 x 10 x 15 5,000 Yes Normaltwolayer_vp1_2 U12-VP1 SA1 43 ft N 23-26 28-29 7-9 20 x 10 x 15 1,000 Yes Normaltwolayer_vp1_3 U12-VP1 SA1 43 ft N 23-26 28-29 7-9 20 x 10 x 15 100 Yes Normaltwolayer_vp1_4 U12-VP1 SA1 43 ft N 23-26 28-29 7-9 20 x 10 x 15 3,000 Yes Normaltwolayer_vp1_5 U12-VP1 SA1 43 ft N 23-26 28-29 7-9 20 x 10 x 15 4,000 Yes Normaltwolayer_vp1_6 U12-VP1 SA1 43 ft N 23-26 28-29 7-9 20 x 10 x 15 4,500 Yes Normaltwolayer_vp1_7 U12-VP1 SA1 43 ft N 23-26 28-29 8-9 20 x 10 x 10 5,000 Yes Normaltwolayer_vp1_8 U12-VP1 SA1 43 ft N 23-26 28-29 8-9 20 x 10 x 10 10,000 Yes NormalU12-VP1/Source Area #2twolayer_vp1_1b U12-VP1 SA2 8 ft NE 25-26 21-22 7-9 10 x 10 x 15 5,000 Yes Normaltwolayer_vp1_2b U12-VP1 SA2 8 ft NE 25-26 21-22 7-9 10 x 10 x 15 1,000 Yes Normaltwolayer_vp1_3b U12-VP1 SA2 8 ft NE 25-26 21-22 7-9 10 x 10 x 15 10,000 Yes Normaltwolayer_vp1_4b U12-VP1 SA2 8 ft NE 25-26 21-22 7-9 10 x 10 x 15 15,000 Yes Normaltwolayer_vp1_5b U12-VP1 SA2 8 ft NE 25-26 21-22 7-9 10 x 10 x 15 25,000 Yes Normaltwolayer_vp1_6b U12-VP1 SA2 8 ft NE 25-26 21-22 9 10 x 10 x 5 50 No Normaltwolayer_vp1_7b U12-VP1 SA2 8 ft NE 25-26 21-22 9 10 x 10 x 5 100 No Normaltwolayer_vp1_8b U12-VP1 SA2 8 ft NE 25-26 21-22 9 10 x 10 x 5 200 No Normaltwolayer_vp1_9b U12-VP1 SA2 8 ft NE 25-26 21-22 8-9 10 x 10 x 10 200 No NormalU12-VP1/Source Area #3twolayer_vp1_1c U12-VP1 SA3 19 ft NW 19-20 21-22 7-9 10 x 10 x 15 5,000 Yes Normaltwolayer_vp1_2c U12-VP1 SA3 19 ft NW 19-20 21-22 7-9 10 x 10 x 15 1,000 Yes Normaltwolayer_vp1_10c U12-VP1 SA3 19 ft NW 19-20 21-22 7-9 10 x 10 x 15 10,000 Yes Normaltwolayer_vp1_11c U12-VP1 SA3 19 ft NW 19-20 21-22 7-9 10 x 10 x 15 8,000 Yes NormalU12-VP1/Source Area #4twolayer_vp1_1d U12-VP1 SA4 23 ft E 29 20-21 7-9 5 x 10 x 15 5,000 Yes Normaltwolayer_vp1_2d U12-VP1 SA4 23 ft E 29 20-21 7-9 5 x 10 x 15 1,000 Yes Normaltwolayer_vp1_10d U12-VP1 SA4 23 ft E 29 20-21 7-9 5 x 10 x 15 10,000 Yes Normaltwolayer_vp1_12d U12-VP1 SA4 23 ft E 29 20-21 7-9 5 x 10 x 15 15,000 Yes Normaltwolayer_vp1_13d U12-VP1 SA4 23 ft E 29 20-21 7-9 5 x 10 x 15 15,000 Yes 0.5 x Permtwolayer_vp1_14d U12-VP1 SA4 23 ft E 29 20-21 7-9 5 x 10 x 15 15,000 Yes 0.1 x Permtwolayer_vp1_15d U12-VP1 SA4 23 ft E 29 20-21 7-9 5 x 10 x 15 10,000 Yes 0.1 x Permtwolayer_vp1_16d U12-VP1 SA4 23 ft E 29 20-21 7-9 5 x 10 x 15 10,000 Yes 0.5 x Permtwolayer_vp1_20d U12-VP1 SA4 23 ft E 29 20-21 8-9 5 x 10 x 10 15,000 Yes Normaltwolayer_vp1_21d U12-VP1 SA4 23 ft E 29 20-21 8-9 5 x 10 x 10 10,000 Yes Normaltwolayer_vp1_22d U12-VP1 SA4 23 ft E 29 20-21 8-9 5 x 10 x 10 20,000 Yes Normaltwolayer_vp1_23d U12-VP1 SA4 23 ft E 29 20-21 8-9 5 x 10 x 10 18,000 Yes Normaltwolayer_vp1_24d U12-VP1 SA4 23 ft E 29 20-21 8-9 5 x 10 x 10 16,000 Yes Normaltwolayer_vp1_25d U12-VP1 SA4 23 ft E 29 20-21 8-9 5 x 10 x 10 17,000 Yes NormalU12-VP1/Source Area #5twolayer_vp1_1e U12-VP1 SA5 8 ft N 23-26 21-22 7-9 20 x 10 x 15 5,000 Yes Normaltwolayer_vp1_2e U12-VP1 SA5 8 ft N 23-26 21-22 7-9 20 x 10 x 15 1,000 Yes NormalU12-VP1/Source Area #6twolayer_vp1_1f U12-VP1 SA6 0 24-28 18-24 8-9 25 x 35 x 10 5,000 Yes Normaltwolayer_vp1_2f U12-VP1 SA6 0 24-28 18-24 8-9 25 x 35 x 10 1,000 Yes Normaltwolayer_vp1_21f U12-VP1 SA6 0 24-28 18-24 8-9 25 x 35 x 10 100 No Normaltwolayer_vp1_22f U12-VP1 SA6 0 24-28 18-24 8-9 25 x 35 x 10 50 No Normaltwolayer_vp1_20f U12-VP1 SA6 0 24-28 18-24 8-9 25 x 35 x 10 200 No NormalU12-VP1/Source Area #7twolayer_vp1_1g U12-VP1 SA7 26 ft NE 29 22 7-9 5 x 5 x 15 5,000 Yes Normaltwolayer_vp1_3g U12-VP1 SA7 26 ft NE 29 22 7-9 5 x 5 x 15 10,000 Yes Normaltwolayer_vp1_4g U12-VP1 SA7 26 ft NE 29 22 7-9 5 x 5 x 15 15,000 Yes Normaltwolayer_vp1_5g U12-VP1 SA7 26 ft NE 29 22 7-9 5 x 5 x 15 20,000 Yes Normaltwolayer_vp1_6g U12-VP1 SA7 26 ft NE 29 22 7-9 5 x 5 x 15 18,000 Yes Normaltwolayer_vp1_7g U12-VP1 SA7 26 ft NE 29 22 7-9 5 x 5 x 15 17,000 Yes Normaltwolayer_vp1_8g U12-VP1 SA7 26 ft NE 29 22 7-9 5 x 5 x 15 17,500 Yes Normaltwolayer_vp1_8g_2 U12-VP1 SA7 26 ft NE 29 22 7-9 5 x 5 x 15 17,500 Yes Normaltwolayer_vp1_9g U12-VP1 SA7 26 ft NE 29 22 8-9 5 x 5 x 10 20,000 Yes Normaltwolayer_vp1_10g U12-VP1 SA7 26 ft NE 29 22 9 5 x 5 x 5 25,000 Yes Normaltwolayer_vp1_11g U12-VP1 SA7 26 ft NE 29 22 9 5 x 5 x 5 25,000 Yes 10 x Permtwolayer_vp1_12g U12-VP1 SA7 26 ft NE 29 22 9 5 x 5 x 5 16,000 20 yrs Normaltwolayer_vp1_13g U12-VP1 SA7 26 ft NE 29 22 9 5 x 5 x 5 4,000 10 yrs Normaltwolayer_vp1_14g U12-VP1 SA7 26 ft NE 29 22 9 5 x 5 x 5 6,000 10 yrs NormalU12-VP1/Source Area #8twolayer_vp1_1h U12-VP1 SA8 15 ft NE 27 21 8-9 5 x 5 x 10 22,000 Yes Normaltwolayer_vp1_2h U12-VP1 SA8 15 ft NE 27 21 8-9 5 x 5 x 10 20,000 Yes NormalMarch 20035-60OU 12 Demonstration ReportFinal
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FinalSource Zone Delineation Demons
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EXECUTIVE SUMMARYThis report docume
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The SVE demonstration conducted in
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TABLE OF CONTENTSEXECUTIVE SUMMARY
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LIST OF FIGURESFigure ES-1 Iso-Conc
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Figure 5-38 Horizontal slices at fi
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LIST OF ACRONYMS AND ABBREVIATIONSA
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Hill Air Force BaseUtahRIVERDALEWeb
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Co-Team LeaderCo-Team LeaderURS Pro
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1.4 Report OrganizationThe remainin
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Davis-Weber CanalDetail AreaHillAir
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ANorthSouthU5-18864,580CROSS SECTIO
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Approx. LocationOf BarrelsInitial S
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Figure 3-2. Wireline locking and re
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3.3 DSITMS Soil AnalyticsDirect sam
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4.0 SOIL VAPOR EXTRACTION DEMONSTRA
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The equilibrium four-phase distribu
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3520 ft. from well, 3.5 cfmTCE in E
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The SVE system included piping from
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SVE Process System and On-Site DSIT
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Table 4-3. Summary of OU 12 SVE Ste
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3,000U12-VP1 Calibration Curve2,500
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5.0 RESULTS OF SOIL SAMPLING AND SV
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0U12-1802100U12-1803100U12-18051020
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0102030405060700U12-1804U12-1807102
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Figure 5-4. Soil samples collected
Page 54 and 55: 298400298360Northing (ft)2983202982
Page 58 and 59: The final TCE soil contamination mo
Page 62 and 63: Figure 5-12. Isometric view, lookin
Page 64 and 65: An isometric view of the upscaled a
Page 66 and 67: March 2003 5-21 OU 12 Demonstration
Page 68 and 69: 4620WE460045804560454045204500Verti
Page 70 and 71: 4620WE460045804560Elevation (ft)454
Page 72 and 73: Volumetric calculations yield an es
Page 74 and 75: The position of the water table in
Page 76 and 77: 5.2 OU 12 SVE EvaluationThe OU 12 S
Page 78 and 79: Vapor Probe #1Vapor Probe #2Vapor P
Page 80 and 81: Thus, the in situ air permeability
Page 82 and 83: 0.0000-0.0010U12-VP1 ResponsePressu
Page 84 and 85: 0.000020.00000U12-VP1 ResponsePress
Page 86 and 87: Table 5-5. Estimated In Situ Air Pe
Page 88 and 89: 10.0U12-VP1 Pneumatic Response8.0Ai
Page 90 and 91: 1,400841,20072TCE Concentration (pp
Page 92 and 93: 800.98700.84TCE Concentration (ppmv
Page 94 and 95: 200.018180.016TCE Concentration (pp
Page 96 and 97: 1400.491200.42TCE Concentration (pp
Page 98 and 99: 4600OU12-VP1OU12-VP2 OU12-VP3 OU12-
Page 100 and 101: the screened interval in U12-VP1 an
Page 102 and 103: permeability layer. Final adjustmen
Page 106 and 107: Table 5-8. continuedFile Name Extra
Page 108 and 109: U12-1802U12-VP3U12-1812U12-1803U12-
Page 110 and 111: U12-1802U12-VP3U12-1812U12-1803U12-
Page 112 and 113: U12-1802U12-VP3U12-1812U12-1803U12-
Page 114 and 115: Figure 5-42 shows a comparison betw
Page 116 and 117: U12-VP1 50 mg/kg source 10 ft thick
Page 118 and 119: 5 10 15 20 25 30 35 40 455 10 15 20
Page 120 and 121: 25 - 30 feet bgs30 - 35 feet bgs35
Page 122 and 123: U12-VP1 200 mg/kg source 10 ft thic
Page 124 and 125: A comparison between the predicted
Page 126 and 127: 5 10 15 20 25 30 35 40 455 10 15 20
Page 128 and 129: U12-VP1 EVS Maximum Soil Concentrat
Page 130 and 131: 9,200Predicted TCE Concentration (p
Page 132 and 133: 6.1 Conventional Sampling and Analy
Page 134 and 135: Table 6-2. Estimated Cost for OU 12
Page 136 and 137: 6.1.2 Direct Push Technology (DPT)T
Page 138 and 139: Table 6-4. Estimated Cost for OU 12
Page 140 and 141: that the Wireline CPT sampler canno
Page 142 and 143: Table 6-5. Summary of Estimated Cos
Page 144 and 145: The Wireline CPT tool is not effect
Page 146 and 147: Figure 7-1. Iso-concentration surfa
Page 148 and 149: 24U12-VP5 Combined Testing201612846
Page 150 and 151: 8.0 REFERENCESBear, J. 1979. Hydrau
Page 152 and 153: TABLE A-1FIELD ANALYICAL RESULTS FO
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TABLE A-1FIELD ANALYICAL RESULTS FO
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APPENDIX BSimulated TCE Vapor-Phase
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TCE Concentration (ppmv2,4702,4602,
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U12-PV1Source Area #2TCE Concentrat
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U12-PV1Source Area #2250VP1 i=24, j
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TCE Concentration (ppmvTCE Concentr
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U12-PV1Source Area #9500450VP1 i=24
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TCE Concentration (ppmTCE Concentra
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700600U12-PV1Source Area #9VP1 i=24
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U12-PV2Source Area #10250VP2 i=23,
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TCE Concentration (ppm1.00.90.80.70
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U12-PV6Source Area #101816VP6 i=33,
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TCE Concentration (ppm6050403020100
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