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200101865 EXHIBIT "C" - PETROLEUM ACTIVITY Facility Identification and Description of Relevant Identity of Petroleum Activities Products Date of Activities Former, Ongoing or Planned Remedial Actions Family Housing Residences ER -1, ER -2, ER -5, ER -6, mpa - ( total USTs were installed in Removal of these tanks was completed 10 ER -8, ER -9, ER -10, ER -13, ER -14 and ER -15 were petroleum 1942 when the houses August 1993 indicating minimal used to house military and civilian personal. When the hydrocarbon) were constructed. contamination. Therefore, no further action plant was closed in 1973 the houses where occupied These tanks held 300 will be taken in accordance with 'response by recruiters from the local area and plant contractors. gallons of diesel fuel. complete" letters from NDEQ. These houses have remained unoccupied since 1989 with little maintenance. All of the houses were heated Monitoring wells were with diesel fuel. The USTs were located along the back Toluene - concentrations put in place in 1993. No further remedial action is required as part of the house. found in groundwater wells concentrations did not exceed the Federal at ER -1/T1, ER -5/T1, ER- MCLs or the NE Groundwater Quality 13/T1 and ER -14/T1 Standards of 1,000ug /L. ranged from .0842ug /L to 1.7ug /L Administration Buildings A -1/T3, A -4/T1 & T2, A -12/T1 TPH - (total petroleum USTs were installed in Removal of these tanks was completed 10 and T2, A- 13/T1, and A- 30/T1. These buildings were hydrocarbon) 1942 when the August 1993 indicating minimal used by the Army and contractor during the time Concentrations ranged Administration was contamination, therefore, no further action will production was in progress. from 13.4mg /kg to built. The sizes of be taken in accordance with 'response 61.7mg /kg with the highest tanks vary from 135 complete" letters from NDEQ. concentration near gallon to 10,000 gallon. Building A -4. Administration Buildings A -1, A -2, A -3, A -4, Toluene - concentrations Monitoring wells were No further remedial action is required as A -10, A -11, A -12, A -13, A -14, A -18 and 204B. These found in groundwater wells put in place in 1993. concentrations did not exceed the Federal buildings were used by the Army and contractor during at A -4/T1 and T2 and A- MCLs or the NE Groundwater Quality the time production was in progress. 13/T1 ranging from Standards 1,000ug /L. 0.777ug /L to 2.96ug /L. Parcel known as U.S.. Air Force Ground Tracking TPH - (total petroleum UST was installed in Removal of these tanks were completed 10 Station. This piece of ground was set aside for the Air hydrocarbon) 1983. The tank held August 1993 indicating minimal Force to conduct ground tracking for a short period of 6,000 gallons for fuel. contamination, therefore, no further action will time. This is only a fenced in area with no buildings. be taken in accordance with 'response complete" letters from NDEQ. Toluene - concentration Monitoring wells were No further remedial action is required as found in groundwater well put in place in 1993. concentrations did not exceed the Federal at this site was 0.812ug /L. MCLs or the NE Groundwater Quality Standards 1,000ug /L. 12