1. Fairbanks Areawide Industrial Reclamation Project AREA HISTORY Janice Wiegers ADEC

2. Area History 1989-1990 1989-1990 DOT plans Minnie Street Connector DOT plans Minnie Street Connector S&W investigate surface soil, subsurface soil, and groundwater S&W investigate surface soil, subsurface soil, and groundwater Widespread contamination stops project (petroleum, solvents, metals, PCBs) Widespread contamination stops project (petroleum, solvents, metals, PCBs) 1993-1996 1993-1996 MSLUG Project - Railroad and ~15 RPs MSLUG Project - Railroad and ~15 RPs USGS investigates groundwater characteristics and quality USGS investigates groundwater characteristics and quality Primary focus is public drinking water wells on other site of the Chena River Primary focus is public drinking water wells on other site of the Chena River 2002 – 2004 2002 – 2004 ADEC begins FAIR project (larger than MSLUG) ADEC begins FAIR project (larger than MSLUG) 2002 Well point investigation conducted and coordinated sampling begins 2002 Well point investigation conducted and coordinated sampling begins 2003 Risk Management Workplan completed by EPA 2003 Risk Management Workplan completed by EPA

3. Area History 1989-1990 1989-1990 DOT plans Minnie Street Connector DOT plans Minnie Street Connector S&W investigate surface soil, subsurface soil, and groundwater S&W investigate surface soil, subsurface soil, and groundwater Widespread contamination stops project (petroleum, solvents, metals, PCBs) Widespread contamination stops project (petroleum, solvents, metals, PCBs) 1993-1996 1993-1996 MSLUG Project - Railroad and ~15 RPs MSLUG Project - Railroad and ~15 RPs USGS investigates groundwater characteristics and quality USGS investigates groundwater characteristics and quality Primary focus is public drinking water wells on other site of the Chena River Primary focus is public drinking water wells on other site of the Chena River 2002 – 2004 2002 – 2004 ADEC begins FAIR project (larger than MSLUG) ADEC begins FAIR project (larger than MSLUG) 2002 Well point investigation conducted and coordinated sampling begins 2002 Well point investigation conducted and coordinated sampling begins 2003 Risk Management Workplan completed by EPA 2003 Risk Management Workplan completed by EPA

4. MSLUG

5. October 1993 April 1994 March 1994 September 1993

6. Area History 1989-1990 1989-1990 DOT plans Minnie Street Connector DOT plans Minnie Street Connector S&W investigate surface soil, subsurface soil, and groundwater S&W investigate surface soil, subsurface soil, and groundwater Widespread contamination stops project (petroleum, solvents, metals, PCBs) Widespread contamination stops project (petroleum, solvents, metals, PCBs) 1993-1996 1993-1996 MSLUG Project - Railroad and ~15 RPs MSLUG Project - Railroad and ~15 RPs USGS investigates groundwater characteristics and quality Primary focus is public drinking water wells on other site of the Chena River USGS investigates groundwater characteristics and quality Primary focus is public drinking water wells on other site of the Chena River 2002 – 2004 2002 – 2004 ADEC begins FAIR project (larger than MSLUG) ADEC begins FAIR project (larger than MSLUG) 2002 Well point investigation conducted and coordinated sampling begins 2002 Well point investigation conducted and coordinated sampling begins 2003 Risk Management Workplan completed by EPA 2003 Risk Management Workplan completed by EPA

7. FAIR AREA

8. Four Tank Farms – fuel delivered by rail UNOCAL Tanks Saupes Tanks Willners Tanks Van Gas Tanks

9. FAIR AREA – Baseline Sampling

10. Benzene ND <5 ug/L 5-99 ug/L 100-999 ug/L >1,000 ug/L Product Groundwater Results - 2002

11. Groundwater Results – Fall 2003 Benzene ND <5 ug/L 5-99 ug/L 100-999 ug/L >1,000 ug/L Product

12. Groundwater Results – Spring 2004 Benzene ND <5 ug/L 5-99 ug/L 100-999 ug/L >1,000 ug/L Product

13. GRO ND <1.3 mg/L 1.3-9 mg/L 10-99 mg/L >100 mg/L Product Groundwater Results - 2002

14. Groundwater Results – Fall 2003 GRO ND <1.3 mg/L 1.3-9 mg/L 10-99 mg/L >100 mg/L Product

15. Groundwater Results – Spring 2004 GRO ND <1.3 mg/L 1.3-9 mg/L 10-99 mg/L >100 mg/L Product

16. DRO ND <1.5 mg/L 1.5-9 mg/L 10-99 mg/L >100 mg/L Product Groundwater Results - 2002

17. Groundwater Results – Fall 2003 DRO ND <1.5 mg/L 1.5-9 mg/L 10-99 mg/L >100 mg/L Product

18. Groundwater Results – Spring 2004 DRO ND <1.5 mg/L 1.5-9 mg/L 10-99 mg/L >100 mg/L Product

19. RRO ND <1.1 mg/L 1.1-9 mg/L 10-99 mg/L >100 mg/L Product Groundwater Results – Spring 2004