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21 September 2005 AGE-NC Project No. 05-1282 Page 2 of 7 of the site and surrounding area indicate that there were several underground storage tanks and areas of potential concerns throughout the site. A summary of the information collected follows: • According to the SJCEHD records, two 4,000 gallon diesel USTs were removed from the southwest portion of the site in August 1985. Representatives of the SJCEHD did not observe evidence of contamination nor were samples collected for confirmation. The SJCEHD did not require further investigation of this area nor was official"closure" of the USTs provided. • Eight USTs were reportedly removed in 1986 from the northwest portion of the site: one 4,000-gallon isopropyl acetate UST; one 4,000-gallon Isopropyl Alcohol UST; one 4,000- gallon Toluel UST; one 1,500-gallon Normal-Propyl Acetate; one 1,000-gallon Acetone UST; one 1,000-gallon Blanket Wash UST; and two 3,000-gallon waste ink USTs. Six of these USTs were located near the northwest corner of the facility. According to SJCEHD information,the other two USTs containing the Blanket Wash and waste ink were located approximately 120 feet west-southwest of the water tower along the northwest side of the facility(see Figure 2). • In a letter dated 18 January 2001,the SJCEHD provided site closure for three USTs at the site: one 210,000-gallon#6 Fuel Oil UST located at the southeast corner of the property and two 5,000-gallon#6 Fuel Oil USTs located within the "courtyard"area near the southeast corner of the facility. The 210,000-gallon UST was piped to the two 5,000-gallon USTs via approximately 700 feet of underground pipeline, as shown in Figure 2. • Between 1989 and 1990, ground water monitoring wells MW-1 through MW-4 were installed near the 210,000-gallon UST as a"variance from the UST regulation because there was no other way to monitor the tank". Most reports indicate little to no detections of petroleum hydrocarbons in ground water samples collected from these wells (shown in Figure 2). • A series of soil samples were advanced and sampled near the underground pipeline and the two USTs within the courtyard area. High concentrations of total recoverable petroleum hydrocarbons(TRPH)were reported in samples from the courtyard area.Low concentrations of TRPH were detected in samples collected along the pipeline area. • Upon removal of the 210,000-gallon UST,impacted soil was excavated and disposed of off- site.Approximately 700 tons of impacted soil was disposed of at Altamont Landfill in 1998. • In addition to TRPH, other contaminants encountered in soil at the facility included total petroleum hydrocarbons (TPH), benzene, 1,2-dichlorobenzene, 1,4-dichlorobenzene and toluene. Advanced GeoEnvironmental,Inc