Source Zone Delineation Demonstration Report - Triad Resource ...

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3520 ft. from well, 3.5 cfmTCE in Extracted Vapor (mg/L)3025201510540 ft. from well, low perm source, 3.5 cfm40 ft. from well, 3.5 cfm60 ft. from well, 15 cfm060 ft. from well, 3.5 cfm0 2 4 6 8 10 12Time (hours)Figure 4-3. Predicted concentration of TCE in extracted soil vapor.installed from 30 to 60 feet bgs with screened intervals ranging from 15 to 20 feet in length. Theextraction/monitoring probes were designed to be finished in a sandy silt zone (approximately 30 to 45feet bgs) and a silty sand zone (approximately 45 and 60 feet bgs) at a minimum depth of 30 feet bgs tominimize short-circuiting of air through the upper sandy gravel zone located within the top 20 feet of theground surface. The specifications of the soil vapor extraction/monitoring probes are shown in Table 4-1.Each well served as either an extraction well or a monitoring well depending on whether the blower wasinstalled to the well head. During the SVE demonstration, the blower was moved from well to well sothat eventually each well served as an extraction well while the other six wells served as monitoringwells.Table 4-1. Soil Vapor Extraction/Monitoring Well SpecificationsWell Easting 1(ft)Northing 1(ft)GroundElevation 2(ft amsl)Top ofScreen(ft bgs)Bottom ofScreen(ft bgs)ScreenLength(ft)U12-VP1 1856098.3 298262.3 4587.4 30.1 50.1 20.0U12-VP2 1856094.9 298293.7 4587.2 30.1 50.1 20.0U12-VP3 1856085.7 298351.0 4588.0 39.0 59.0 20.0U12-VP4 1856102.1 298234.6 4588.1 29.5 48.9 19.4U12-VP5 1856053.5 298315.7 4587.6 39.6 58.7 19.1U12-VP6 1856144.4 298293.7 4588.5 30.5 45.4 14.9U12-VP7 1856056.1 298239.3 4587.3 39.6 54.9 15.31 Coordinates measured via GPS survey.2 Ground elevations estimated by interpolation using surveyed elevations.March 2003 4-5 OU 12 Demonstration ReportFinal
~ 3'Vacuum GaugeRemovable ThreadedCaps (Air Tight)Ground SurfaceDPT Rig~ 20 - 35'3/4" ThreadedPVC Monitoring WellGrout~ 2'Pre-PackBentonite Seal4" Foam BridgeNatural FormationPre-Packed Bentonite~ 15 - 20'3/4" PVC SlottedPipe (15-20' Long)~2.25"Typical Extraction/Monitoring WellOperable Unit 12 (OU 12)Hill Air Force Base, UtahWell InstallationFIGURE 4-4March 2003 4-6 OU 12 Demonstration ReportFinal
Page 1 and 2: FinalSource Zone Delineation Demons
Page 3 and 4: EXECUTIVE SUMMARYThis report docume
Page 5: The SVE demonstration conducted in
Page 8 and 9: TABLE OF CONTENTSEXECUTIVE SUMMARY
Page 10 and 11: LIST OF FIGURESFigure ES-1 Iso-Conc
Page 12 and 13: Figure 5-38 Horizontal slices at fi
Page 14 and 15: LIST OF ACRONYMS AND ABBREVIATIONSA
Page 16 and 17: Hill Air Force BaseUtahRIVERDALEWeb
Page 18 and 19: Co-Team LeaderCo-Team LeaderURS Pro
Page 20 and 21: 1.4 Report OrganizationThe remainin
Page 22 and 23: Davis-Weber CanalDetail AreaHillAir
Page 24 and 25: ANorthSouthU5-18864,580CROSS SECTIO
Page 26 and 27: Approx. LocationOf BarrelsInitial S
Page 28 and 29: Figure 3-2. Wireline locking and re
Page 30 and 31: 3.3 DSITMS Soil AnalyticsDirect sam
Page 32 and 33: 4.0 SOIL VAPOR EXTRACTION DEMONSTRA
Page 34 and 35: The equilibrium four-phase distribu
Page 38 and 39: The SVE system included piping from
Page 40 and 41: SVE Process System and On-Site DSIT
Page 42 and 43: Table 4-3. Summary of OU 12 SVE Ste
Page 44 and 45: 3,000U12-VP1 Calibration Curve2,500
Page 46 and 47: 5.0 RESULTS OF SOIL SAMPLING AND SV
Page 48 and 49: 0U12-1802100U12-1803100U12-18051020
Page 50 and 51: 0102030405060700U12-1804U12-1807102
Page 52 and 53: 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
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Table 5-5. Estimated In Situ Air Pe
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10.0U12-VP1 Pneumatic Response8.0Ai
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1,400841,20072TCE Concentration (pp
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800.98700.84TCE Concentration (ppmv
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200.018180.016TCE Concentration (pp
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1400.491200.42TCE Concentration (pp
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4600OU12-VP1OU12-VP2 OU12-VP3 OU12-
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the screened interval in U12-VP1 an
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permeability layer. Final adjustmen
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Table 5-7. Comparison of Measured a
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Table 5-8. continuedFile Name Extra
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U12-1802U12-VP3U12-1812U12-1803U12-
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U12-1802U12-VP3U12-1812U12-1803U12-
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U12-1802U12-VP3U12-1812U12-1803U12-
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Figure 5-42 shows a comparison betw
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U12-VP1 50 mg/kg source 10 ft thick
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5 10 15 20 25 30 35 40 455 10 15 20
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25 - 30 feet bgs30 - 35 feet bgs35
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U12-VP1 200 mg/kg source 10 ft thic
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A comparison between the predicted
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5 10 15 20 25 30 35 40 455 10 15 20
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U12-VP1 EVS Maximum Soil Concentrat
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9,200Predicted TCE Concentration (p
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6.1 Conventional Sampling and Analy
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Table 6-2. Estimated Cost for OU 12
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6.1.2 Direct Push Technology (DPT)T
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Table 6-4. Estimated Cost for OU 12
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that the Wireline CPT sampler canno
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Table 6-5. Summary of Estimated Cos
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The Wireline CPT tool is not effect
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Figure 7-1. Iso-concentration surfa
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24U12-VP5 Combined Testing201612846
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8.0 REFERENCESBear, J. 1979. Hydrau
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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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