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Groundwater Investigation and Associated Source Characterization

Table 9.1-1 - Summary of Remedial Alternatives for SWMU O-1

Remedial Alternative

Contaminant Type Addressed

Data Objectives

Recommended Actions

VOCs

Metals

Pre-remediation design characterization

X

X

Determination of lateral and vertical contamination

Additional soil borings (5) to approximately 15 feet.

Determine soil chemical and physical characteristics.

SVE or passive volatilization

X

PCE removal.  May not meet standard 1 closure requirements.

Submit air emission standard exemption to TNRCC.

High temperature thermal desorption

X

Evaluate use of approved technology to remediate remaining PCE in soils.

Submit air emission standard exemption.

Treatability study.

Soil washing

X

Evaluate use of approved technology to remediate chromium in soils.

Treatability study.

Electrokinetic remediation

X

Evaluate use of low maintenance, innovative technology to remediate metals in soils.

Detailed design evaluation.

Treatability study.

Other innovative remedial technologies

X

X

Evaluate new technologies for applicablity to site, and cost effectiveness on both VOCs and metals.

Preliminary screening and detailed design evaluation.

Treatability study.

Excavate and dispose of soils

X

X

Evaluate source removal technique for quick turnaround and cost effectiveness.

Characterize for waste disposal criteria.

Phytoremediation

X

Evaluate use of low maintenance, innovative technology to remediate metals in soils.

Evaluate types of plants that may help remediate chromium to criteria levels.

Treatability study.