312
Index
Freundlich model, 225

Full-scale reactive iron barrier
assessment, 268

implementation, 269

pilot-scale evaluation, 268

“pump and treat” system, 270

Funnel-and-gate PRBs, 50–51

Funnel-and-gate system (F&G system),

14, 15, 156, 278

G
GAC, see Granular-activated carbon
(GAC)
Gas-water-dynamics, 181; see also
Reactive gas barriers and zones
(RGBZ)
example test facilities, 182–184
gas-water displacement, 184–185
gas dissolution and degassing,
187–189

gas flow transport, 181–182

gas injection, 184–185

gas propagation and storage, 185–187

NDI and HDI gas injection, 187

Gas-water displacement, 184–185
Gas chromatography–mass

spectrometry (GC–MS), 219,
220

Gas dissolution, 187

and degassing, 188

mass transfer, 187–188

state-of-the-art modeling techniques,

188

Gas injection, 184–185, 189

Gas injection devices, 191

gas distribution, 193

gas lances, 191–193

gas mixing, 193

gas supply, 193

safety precautions, 194–195

Gas lances, 191

drilling injection lances, 192

high-quality direct push lances, 193

sounding injection lances, 192

Gas mixing, 193

Gas monitoring, 196–197; see also

Dissolved gas monitoring

Gas propagation, 185–187

Gas saturation testing, 197–198

Gas supply, 193

GC–MS, see Gas chromatography–mass

spectrometry (GC–MS)
Geochemical computer modeling
codes, 45

Geochemical parameters, 110

Geochemistry, 43

of GW, 45

properties, 18

GFIadags
® -technology, 210

autotrophic biodegradation, 211

heterotrophic biodegradation, 211

oxygen gas PRB, 210

posttreatment effect, 212

reactive gas zones, 210

Granular-activated carbon (GAC),
31, 278

Groundwater (GW), 42

acidity, 141, 147

flow, 206

sampling and analysis, 263–264

Groundwater contamination, 2

diffusion and mass flow, 5

DNAPL interactions, 6

dynamics of fluids in fractured
rock, 6

fate and transport, 4–6

global estimate of contaminated
sites, 3

Groundwater environment, 181

example test facilities, 182–184

gas-water-dynamics in, 181

gas-water displacement, 184–185

gas dissolution and degassing,
187–189

gas flow transport, 181–182

gas injection, 184–185

gas propagation and storage, 185–187

NDI and HDI gas injection, 187

Groundwater modeling involving PRBs,
63, 64

design of PRBs, 65–70

mathematical models, 71

model calibration, 75–76

model construction, 72–73

model parameters, 75

numerical models, 70

outcomes, 77–79
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