1. 1 FORMER AIR FORCE PLANT 36 BACKGROUND INVESTIGATION Prepared for: Air Force Center for Environmental Excellence and Aeronautical Systems Center

2. 2 PURPOSE FOR MIP AND PDB TECHNOLOGY Characterize lateral/vertical extent of cl- VOCs in soil and ground water Evaluate vertical distribution of cl-VOCs in ground water Provide real-time data on lithology and contaminant distribution

3. 3 HISTORY AND STATUS OF CORRECTIVE ACTION AT GEAE GEAE buys AFP 36 in 1989 Corrective action begins in 1990 Numerous investigations/interim measures performed Approximately 150 monitoring wells on/off site TCE and TCA in ground water remaining corrective measure Investigate source of TCE/TCA at AF Plant 36

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5. 5 BACKGROUND INVESTIGATION Determine Source of TCE/TCA in groundwater –1. Sampling Design –2. Sampling Locations –3. Methodology MIP Survey –1. Sensor and Detector Outputs (Fig. 2.2-3) –2. Sampling Area (Fig. 3.1-2) –3. EC and ECD Results (Fig. 3.1-3) Direct Push Results –1. Soil (Fig. 3.1-7) –2. Groundwater (Fig. 3.1-9) –3. MIP/Direct Push Comparison (Fig. 3.1-11) Groundwater Monitoring Results Passive Diffusion Bag Results (Fig. 3.1-13)

6. 6 BACKGROUND INVESTIGATION MIP Survey 1. Sampling Design –2. Sampling Area (Fig. 3.1-2) –3. EC and ECD Results (Fig. 3.1-3)

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8. 8 BACKGROUND INVESTIGATION MIP Survey –1. Sensor and Detector Outputs (Fig. 2.2-3) –2. Sampling Area (Fig. 3.1-2) –3. EC and ECD Results (Fig. 3.1-3)

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10. 10 BACKGROUND INVESTIGATION MIP Survey –1. Sensor and Detector Outputs (Fig. 2.2-3) –2. Sampling Area (Fig. 3.1-2) –3. EC and ECD Results (Fig. 3.1-3)

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12. 12 BACKGROUND INVESTIGATION Direct Push Results –1. Soil (Fig. 3.1-7) –2. Groundwater (Fig. 3.1-9) –3. MIP/Direct Push Comparison (Fig. 3.1-11)

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14. 14 BACKGROUND INVESTIGATION Direct Push Results –1. Soil (Fig. 3.1-7) –2. Groundwater (Fig. 3.1-9) –3. MIP/Direct Push Comparison (Fig. 3.1-11)

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17. 17 BACKGROUND INVESTIGATION Groundwater Monitoring Results Passive Diffusion Bag Results (Fig. 3.1-13)

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