Conceptual Site Model - Argonne National Laboratory

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WVDP Phase 1 CSAPCSAP data collection will establish the extent of surface soil contamination above surface soilCG w values within the WVDP premises. The strategy for establishing surface soil contaminationextent has the following components:• Initial conceptual site models will be established for each of the WMAs that identify,based on existing information, areas within WMAs where surface contamination issuspected to be present. The appendices to the CSAP provide initial conceptual sitemodels for each of the WMAs.• A complete, logged gamma walkover survey (GWS) will be conducted for accessiblesurfaces for the WVDP premises. Section 11 describes GWS protocols in greater detail.The goal is to have a data density of at least one measurement per square meter (m 2 ) withan acquisition time of one second using one or more sodium iodide (NaI) detectors.Based on process knowledge and the limited surface soil samples available, it is expectedthat surface soil contamination above surface soil CG w values will always beaccompanied by Cs-137 elevated at levels detectable via a GWS. The GWS data will beused to further refine WMA-specific initial conceptual site models. In particular, GWSdata will be used to identify areas where GWS results indicate surface contaminationlikely exceeds CG w requirements; areas where contamination impacts exist, but it is veryunlikely surface contamination exceeds CG w requirements; areas that appear un-affectedby contamination; and areas where the GWS data are inconclusive. For the WVDP Phase1 process, the first two are analogous to Multi-Agency Radiation Survey and <strong>Site</strong>Investigation Manual (MARSSIM) Class 1 and Class 2 areas, respectively. Figure 5provides a flowchart for decision-making based on GWS data results. The followingbullets further elaborate on the steps shown in Figure 5.• Areas where GWS data clearly indicate surface contamination exists above CG wrequirements will have limited sampling conducted to confirm GWS findings. Thissampling will typically target the highest gross activity levels encountered. Soil sampleswill be collected representative of both the 0- to 15-cm interval and the 15-cm to 1-minterval. Sampling may also take place to confirm the boundaries of contamination aboveCG w requirements if this is not obvious from GWS data.Rev. 1 30
WVDP Phase 1 CSAPConduct GWSSurveyDoGWSData IndicateLocalizedHot SpotConcerns?YesBias SampleHot SpotNoDoGWS DataIndicate > CGConditions?YesBias Sample HighestLocation and BoundariesNoDoGWS DataIndicate PossibleCG Exceedancess?YesNoSample Area of InterestSystematicallyDoGWS DataIndicate Impacts< CG?YesNoFlag Area as PotentiallyReady for FSS SamplingFigure 5 Flowchart Showing Decision-Making ProcessBased on GWS Data CollectionRev. 1 31
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Page 17 and 18: WVDP Phase 1 CSAP1.0 INTRODUCTION A
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WVDP Phase 1 CSAPFigure 7 WVDP Radi
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Table 5: Estimated Scanning Minimum
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WVDP Phase 1 CSAPpotentially exceed
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WVDP Phase 1 CSAP• Each detector
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WVDP Phase 1 CSAPThis page intentio
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WVDP Phase 1 CSAP12.2 Standard Labo
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WVDP Phase 1 CSAP• The data compl
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WVDP Phase 1 CSAPVitrification Faci
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WVDP Phase 1 CSAPA.4 Known and Susp
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WVDP Phase 1 CSAPthe sanitary sewer
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WVDP Phase 1 CSAPA.4.3.6Interceptor
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WVDP Phase 1 CSAP1998, or 2008, and
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WVDP Phase 1 CSAPcontaminated surfa
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WVDP Phase 1 CSAPdata collection is
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WVDP Phase 1 CSAParranged on a tria
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WVDP Phase 1 CSAP• Slurry Wall Fo
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WVDP Phase 1 CSAP• If contaminati
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WVDP Phase 1 CSAPappears to extend
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WVDP Phase 1 CSAPTable A.2 Sample N
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WVDP Phase 1 CSAPFigure A.2 WMA 1 w
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WVDP Phase 1 CSAPFigure A.4 North P
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WVDP Phase 1 CSAPFigure A.6 WMA 1 A
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WVDP Phase 1 CSAPFigure A.8 WMA 1 A
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WVDP Phase 1 CSAPFigure A.10 WMA 1
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WVDP Phase 1 CSAPGP-10108GP-10308BH
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WVDP Phase 1 CSAPFigure A.18 Phase
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WVDP Phase 1 CSAPFigure A.20 Initia
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WVDP Phase 1 CSAPFigure A.22 Initia
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WVDP Phase 1 CSAP• Lagoon 1 was a
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WVDP Phase 1 CSAPSolvent Dike. The
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WVDP Phase 1 CSAP• An exception t
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WVDP Phase 1 CSAPFigure B.8 shows W
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WVDP Phase 1 CSAPB.4.3.1Wastewater
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WVDP Phase 1 CSAPB.4.3.3Neutralizat
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WVDP Phase 1 CSAP3. Contaminated so
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WVDP Phase 1 CSAP• There is a sig
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WVDP Phase 1 CSAP• Define require
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WVDP Phase 1 CSAP• CG w Sampling.
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WVDP Phase 1 CSAPcharacterize the n
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WVDP Phase 1 CSAPoA variety of geot
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WVDP Phase 1 CSAPoIf elevated readi
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WVDP Phase 1 CSAPlocation represent
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WVDP Phase 1 CSAPTable B.2 Sample N
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WVDP Phase 1 CSAPFigure B.2 WMA 2 w
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WVDP Phase 1 CSAPFigure B.4 WMA 2 A
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WVDP Phase 1 CSAPFigure B.10 WMA 2
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WVDP Phase 1 CSAPFigure B.20 Initia
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WVDP Phase 1 CSAPdiameter that are
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WVDP Phase 1 CSAPC.2 Physical Setti
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WVDP Phase 1 CSAPAs originally depo
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WVDP Phase 1 CSAPC.4.3.3Waste Tank
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WVDP Phase 1 CSAPsamples. 10 pCi/L
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WVDP Phase 1 CSAPC.9.1Buried Infras
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WVDP Phase 1 CSAPhole gamma data wi
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WVDP Phase 1 CSAPthese sample resul
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WVDP Phase 1 CSAPTable C.1 Sample N
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WVDP Phase 1 CSAPFigure C.2 WMA 3 F
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WVDP Phase 1 CSAPFigure C.4 WMA 3 A
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WVDP Phase 1 CSAP1Figure C.10 WMA 3
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WVDP Phase 1 CSAPFigure C.12 WMA 3
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WVDP Phase 1 CSAPFigure C.14 WMA 3
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WVDP Phase 1 CSAPFigure C.16 Initia
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WVDP Phase 1 CSAPFigure C.18 Initia
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WVDP Phase 1 CSAPD.3 Area HistoryWM
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WVDP Phase 1 CSAPD.4.2North Plateau
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WVDP Phase 1 CSAPcolor-coded by Sr-
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WVDP Phase 1 CSAPD.9 CSAP Pre-Remed
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WVDP Phase 1 CSAPoIf GWS results in
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WVDP Phase 1 CSAPdrainage feature s
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WVDP Phase 1 CSAP• If the GWS res
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WVDP Phase 1 CSAPTable D.2 Sample N
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WVDP Phase 1 CSAPFigure D.2 WMA 4 A
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WVDP Phase 1 CSAPFigure D.10 1990 -
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WVDP Phase 1 CSAPFigure D.12 Histor
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WVDP Phase 1 CSAPFigure D.14 Initia
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WVDP Phase 1 CSAPFigure D.16 Initia
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WVDP Phase 1 CSAPcoat, application
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WVDP Phase 1 CSAPWMA 5 is underlain
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WVDP Phase 1 CSAPFinally, other rel
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WVDP Phase 1 CSAPIn 1987, water fro
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WVDP Phase 1 CSAPE.6 Planned Phase
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WVDP Phase 1 CSAPis most likely ass
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WVDP Phase 1 CSAPsample. If biased
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WVDP Phase 1 CSAPsoils and a draina
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WVDP Phase 1 CSAPE.9.6Buried Infras
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WVDP Phase 1 CSAPE.9.9Decision-Maki
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WVDP Phase 1 CSAPTable E.1 Historic
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WVDP Phase 1 CSAPWMA 12Chemical Pro
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WVDP Phase 1 CSAPFigure E.3 WMA 5 1
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WVDP Phase 1 CSAPFigure E.11 WMA 5
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WVDP Phase 1 CSAPFigure E.13 Histor
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WVDP Phase 1 CSAPNew Cooling Tower.
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WVDP Phase 1 CSAPPlateau although t
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WVDP Phase 1 CSAPF.4.2North Plateau
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WVDP Phase 1 CSAPof the Process Bui
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WVDP Phase 1 CSAPThe New Cooling To
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WVDP Phase 1 CSAP• Verify Absence
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WVDP Phase 1 CSAP• CG w Sampling.
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WVDP Phase 1 CSAP• A minimum of t
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WVDP Phase 1 CSAPand analyzed from
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WVDP Phase 1 CSAPcontamination may
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WVDP Phase 1 CSAPF.10 ReferencesDOE
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WVDP Phase 1 CSAPTable F.2 Sample N
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WVDP Phase 1 CSAPFigure F.2 WMA 6 w
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WVDP Phase 1 CSAPFigure F.4 WMA 6 A
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WVDP Phase 1 CSAPFigure F.10 WMA 6
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WVDP Phase 1 CSAPGP10208BH-19A137Cs
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WVDP Phase 1 CSAPNFS Shallow Specia
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WVDP Phase 1 CSAPLiquid that collec
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WVDP Phase 1 CSAPeastern ends of th
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WVDP Phase 1 CSAPG.4.3 Drainage Are
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WVDP Phase 1 CSAPPhase 1 will not a
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WVDP Phase 1 CSAPG.9.3 Surface Soil
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WVDP Phase 1 CSAPoIf any 0-15 cm in
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WVDP Phase 1 CSAP• Three location
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WVDP Phase 1 CSAP• Backfill assoc
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WVDP Phase 1 CSAPTable G.2 Sample N
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WVDP Phase 1 CSAPFigure G.2 WMA 7 w
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WVDP Phase 1 CSAPFigure G.4 Subsurf
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WVDP Phase 1 CSAPFigure G.6 WMA 7 A
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WVDP Phase 1 CSAPFigure G.8 WMA 7 A
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WVDP Phase 1 CSAPFigure G.10 WMA 7
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WVDP Phase 1 CSAPSS-15137Cs: 4.7 pC
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WVDP Phase 1 CSAPcompleted in 1990.
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WVDP Phase 1 CSAP• In 1990 and 19
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WVDP Phase 1 CSAPH.9.1 Gamma Walkov
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WVDP Phase 1 CSAPdepth interval, an
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WVDP Phase 1 CSAPA select portion o
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WVDP Phase 1 CSAPTable H.1 Historic
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WVDP Phase 1 CSAPEmpty Waste Contai
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WVDP Phase 1 CSAPFigure H.3 WMA 9 A
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WVDP Phase 1 CSAPFigure H.11 WMA 9
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WVDP Phase 1 CSAPFigure H.13 Histor
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WVDP Phase 1 CSAPFigure H.15 WMA 9
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WVDP Phase 1 CSAPA steel security f
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WVDP Phase 1 CSAPFigure I.4 shows W
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WVDP Phase 1 CSAPshine from facilit
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WVDP Phase 1 CSAPI.7 Conceptual Sit
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WVDP Phase 1 CSAPA complete (100%)
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WVDP Phase 1 CSAPgross activity lev
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WVDP Phase 1 CSAP• If a sample in
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WVDP Phase 1 CSAPI.9.8Required Labo
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WVDP Phase 1 CSAPTable I.1 Historic
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WVDP Phase 1 CSAPContractor Fab Sho
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WVDP Phase 1 CSAPFigure I.3 WMA 10
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WVDP Phase 1 CSAPFigure I.15 Initia
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WVDP Phase 1 CSAPBrook northwest of
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WVDP Phase 1 CSAP• Lagoon 3 (in W
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WVDP Phase 1 CSAPThe limited Cs-137
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WVDP Phase 1 CSAPcontaminating subs
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WVDP Phase 1 CSAPdistribution of su
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WVDP Phase 1 CSAPoIf GWS results in
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WVDP Phase 1 CSAPon historical info
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WVDP Phase 1 CSAPA select portion o
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WVDP Phase 1 CSAPTable J.1 Historic
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WVDP Phase 1 CSAPFigure J.1 WMA 12
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WVDP Phase 1 CSAPFigure J.5 1982 WM
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WVDP Phase 1 CSAPWMA 12 NorthWMA 12
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WVDP Phase 1 CSAPlater in this sect
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WVDP Phase 1 CSAP• Direct measure
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WVDP Phase 1 CSAPK.9.2 Surface Soil
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WVDP Phase 1 CSAPpurpose is to reso
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WVDP Phase 1 CSAP• If a portion o
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WVDP Phase 1 CSAPFigure K.1 WMA 12
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WVDP Phase 1 CSAPFigure K.9 Initial
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Conceptual Site Model - Argonne National Laboratory

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