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Assessment Phase

Groundwater

Groundwater is located beneath the land’s surface that can be impacted by contamination.

1,4 Dioxane (14DX-1)
Section 3 (Environmental Fate, Transport, and Investigative Strategies)
Discusses groundwater transport of 1,4-dioxane.

Accelerated Site Characterization (ASCT-1)
Section 3 (Direct Sensing)
Information about direct sensing as a groundwater profiling tool.

Accelerated Site Characterization (ASCT-1)
Section 4 (Borehole Geophysical)
Describes borehole geophysical tools and their ability to collect hydrogeologic data.

Dense, nonaqueous-phase liquids (DNAPLs-3)
Section 3.6 (Characterizing Groundwater and Source Water Chemicals)
Characterizing groundwater and source water chemical/fluid properties.

Integrated DNAPL Site characterization (ISC-1)
Section 4.2.6 (Evaluate Groundwater Chemical Signature Data)
Contains information about evaluating groundwater data using chemical signatures instead of chemical concentration.
Table D-2a: Comparison of single-well tests for hydraulic testing.
Table D-6a: Comparison of Discrete groundwater sampling tools.
Table D-6d: Comparison of multilevel sampling tools for groundwater sampling.
Table D-8: Comparison of chemical screening tools for groundwater sampling.
Table D-10: Comparison of stable isotropic and environmental tracers for groundwater testing.
Section E.4: A description of hydrogeologic parameters that govern groundwater flow.
Section E.5.2: A short description of the value of multilevel monitoring for groundwater chemistry.
Section E.5.3: A description of geochemical parameters as used as water quality indicators.

Integrated DNAPL Site Strategy (IDSS-1)
Section 5.2.4 (Groundwater)
A description of groundwater monitoring programs and the components they should include.

Mass Flux (MASSFLUX-1)
Section 1 (Introduction)
The role of mass flux in contaminant transport in a groundwater plume.

Remediation Management of Complex Sites (RMCS-1)
Section 2.1.2 (Hydrogeologic Conditions)
Discusses the consideration of hydrogeologic conditions when creating a conceptual site model (CSM).

Vapor Intrusion (PVI-1)
Appendix G
Addresses groundwater sampling methods in relation to assessing vapor intrusion conditions.