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The meeting was held at the CSSA Building One conference room, beginning at 1030 hours on April 11, 1997.  This meeting was attended by representatives of CSSA, AFCEE, Lynntech, and Parsons ES.  The following were in attendance (see attached sign-in sheet for “Treatability Study Kickoff” meeting attendees):

Meeting Purpose

The purpose of the meeting was to discuss issues relative to the planned SWMU O-1 treatability study, review specific concerns, and to update AFCEE and CSSA on the proposed project.

Meeting Agenda

The agenda was as follows:

Issues and Concerns

After brief introductions, issues or concerns associated with the electrokinetic treatability study planned for O-1 were discussed.  The issues and concerns to date are as follows:

1. The availability of electrical power at O-1 and the resulting schedule of activities.  A contract was recently awarded from CSSA for the construction and installation of electrical utility services planned for O-1.  However, it is expected that the electrical service will not be available until middle of May at the earliest.  Lynntech suggested that a 35 kW diesel generator could be used to power the system, if necessary.  This would allow the project to proceed during the initial installation testing and startup phase of the treatability study.

2. Requirements for chemical analysis for the treatability study was expressed as a concern.  Concerns of the project analytical requirements as specified by the QAPP and their applicability for Lynntech analytical work were discussed.  The project QAPP requirements for chemical analysis are required for the planned third party validation efforts provided by ITS laboratory.  Lynntech will be provided a copy of the project QAPP, however, the QAPP requirements are not required of Lynntech.  Lynntech will provide a sampling plan for third party validation within the developed work plan for the treatability study.

3. The expected use of CSSA personnel or equipment for the project was noted as a concern.  Lynntech would like to use a dedicated phone line, provided by CSSA, for offsite monitoring of the field pilot system.  The possibility of using the existing weather station line was proposed.  In addition, for the installation of the wells, CSSA has offered use of the bobcat with an auger attachment.

Summary of Proposed Project

A technical presentation of the proposed project was given by Dr. Hodko.  Lynntech’s technical approach includes a laboratory bench-scale test using approximately 20 pounds of soil in a recompacted test bed.  The results of the benchscale test will be utilized for a field-scale treatment system of approximately five to eight wells, consisting of one to two cathode wells and four to six anode wells using “dc/ac electrokinetics”, which is a pulsing of direct current and alternating current, operated for 60 days.   To optimize the dc/ac electrokinetic soil remediation technology, Lynntech proposes to use a 2% solution of citric acid (approximately 100 kg) as a leachant for chromium and cadmium contaminants.  Typically, citric acid is added to the cathode to neutralize the base produced by the electrochemical reaction.  Electrochemically produced acid in the anode well is diluted by adding water to the wells.  The soil pH is precisely controlled between the electrodes by adjusting the current at the electrodes during the process.  Chromium and cadmium, if in the cationic form, would be electroplated at the cathodes and removed from the cathode effluent.  The exact spacing between the wells should be determined by the benchscale laboratory test.  The system is fully automated and can be controlled remotely.

Schedule of Work

The proposed schedule (see attached schedule) will provide results of the treatability study by the end of August.  It was agreed that Lynntech should have a draft work plan and health and safety plan developed by 1 May 1997.  The benchscale test will begin after CSSA, AFCEE, and Parsons ES review of the work plan and all comments are addressed for the final work plan submittal.

Clarifications to SOW

The proposed scope of work included the generation of contaminated waters which were to be handled by offsite waste disposal.  Lynntech would like to modify proposed work efforts to include the use of an electrodialysis reversal (EDR) unit.  The unit operates similar to a reverse osmosis unit.  It will allow for reuse of generated waters collected from the cathode unit and concentrate contaminants (heavy metals) in a precipitate sludge.  This would allow the possibility of recycling the chromium contaminant removed from O-1 soils.  The estimated cost for use of the unit is $2000.  At this time it is not anticipated that an increase in subcontractor cost for the project is necessary.

Actions

Parsons ES

1. Send copy of Project QAPP to Lynntech.

2. Check on the availability of weather station phone line.  Parsons ES uses the phone line approximately once a week for a five minute download.

3. Provide analytical results of 0-1 soils sampled on April 11, 1997.

4. Review draft work plan from Lynntech.

Lynntech

1. Provide CSSA with electrical equipment vendor.

2. Work plan drafted by May 1, 1997.

AFCEE/BAH

1. Review draft work plan from Lynntech.

CSSA

1. Review draft work plan from Lynntech.

2. Check on possibility of routing existing well 16 phone line to the 0-1 area.