Source Zone Delineation Demonstration Report - Triad Resource ...

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Hill Air Force BaseUtahRIVERDALEWeber River8015SALT LAKE CITY70ROYOperable Unit 12(OU 12)RoyGateNorthGateWeber CountyDavis CountySUNSETCLINTONHILLAIR FORCEBASEWestGateDavis - Weber CanalCLEARFIELDSouthWestGateSouthGateLAYTONLocation MapOperable Unit 12 (OU 12)Hill Air Force Base, Utah0.4 0 0.4 0.8MilesFIGURE 1-1March 2003 1-2 OU 12 Demonstration ReportFinal
Dynamic work plans rely on an adaptive sampling and analysis strategy. Rather than specify thesampling location and frequency, dynamic work plans specify the decision-making logic that will be usedin the field to determine where to collect samples and when to terminate sampling. The conceptual modelof the site is dynamic and changes to reflect the increased site knowledge gained from site investigativeactivities. Thus, an adaptive sampling program changes as the CSM is refined based on the analyticalresults produced in the field. In comparison, the traditional site investigation work plan is static in natureand depends on pre-specified sampling locations, sampling frequency, and the types of analysis to beperformed.A dynamic work plan approach requires detailed up-front planning, an advanced level of field-basedtechnology and interpretative expertise, and the flexibility to make assessment decisions during fieldoperations. Real-time, or near real-time visualization and interpretation of field-generated data enables adynamic decision process to direct data collection during the site investigation activities. This approachemploys multiple measurement and sampling technologies coupled with on-site technical decisionmakingby a skilled, multidisciplinary Core Technical Team. The purpose of the Core Technical Team isto provide a continuous, integrated, multidisciplinary presence throughout the project. Additionally, theCore Technical Team is responsible for decision-making in the field and directing the site investigation.The technical team generally is composed of professionals that possess expertise in geology,hydrogeology, analytical chemistry, and chemical/remediation process systems. The Core TechnicalTeam for the OU 12 Source Zone Delineation Demonstration consisted of members from URSCorporation, Applied Research Associates, Inc. (ARA), Tri-Corders Environmental, Inc., MontgomeryWatson Harza (MWH), and Hill AFB (see Figure 1-2).As the prime contractor, URS was responsible for the design, implementation, and reporting requirementsassociated with the Source Zone Delineation Demonstration. Additionally, URS conducted the SVEinvestigation at OU 12 to serve as a technology demonstration for the utility of SVE as a characterizationtool for VOC contamination in the vadose zone. To aid in the characterization of the OU 12 source zoneand provide preliminary site data for the placement of the soil vapor monitoring probes, ARA conducted aWireline CPT investigation. The Wireline CPT investigation also served as a technology demonstrationfor the rapid characterization of a VOC source zone. The Wireline CPT system consists of an innovativeretrieval system and an assortment of characterization tools that can be retrieved and interchanged fromany depth in the vadose zone without retracing the rod-string from the ground. Tri-CordersEnvironmental, Inc. provided field analytical services for the rapid analysis of low concentration VOCs inthe environmental media analyzed at OU 12. Field analysis included the use of DSITMS for nearcontinuous analysis of soil and vapor samples collected via the Wireline CPT and soil vapor extractionsystems. MWH assisted with the installation of the vapor extraction/monitoring probes and with datalogging during the Wireline CPT demonstration.Members of the team were responsible to make recommendations on field investigative activities (e.g.,sampling locations and frequency) based on the preliminary CSM of the site and the most current datagathered during field operations. Although the URS Project Manager and ARA Project Manager servedas team co-leaders, final decision-making authority resided with the URS Project Manager during thedemonstration.March 2003 1-3 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 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 36 and 37: 3520 ft. from well, 3.5 cfmTCE in E
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
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March 2003 5-21 OU 12 Demonstration
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4620WE460045804560454045204500Verti
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4620WE460045804560Elevation (ft)454
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Volumetric calculations yield an es
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The position of the water table in
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5.2 OU 12 SVE EvaluationThe OU 12 S
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Vapor Probe #1Vapor Probe #2Vapor P
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Thus, the in situ air permeability
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0.0000-0.0010U12-VP1 ResponsePressu
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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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