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' Georogicaf?ecknics Inc. • Page 2 Soil Boring Installation Work Plan Fortifiber ' Project No. 709.2 December 7, 1998 ' Former Underground Stage Tanks (USTs) Observations • Two USTs were located on the east side of the boiler house, north of the manufacturing building. One was a 200-gallon diesel tank used for motor fuel and the other was a 10,000-gallon tank used for formaldehyde. Semco removed these tanks in February 1987. During removal, some of the contents were spilled, which caused problems in ' getting closure. • Clayton Environmental Consultants installed a monitoring well near the former USTs and tested it several times in 1993. The test results showed that TEPH-D, BTEX, and Formaldehyde were not detected. The well was abandoned under county permit on ' November 18, 1993. • San Joaquin County officially closed these tanks on November 29, 1993. Waste Storage Observations • A small quantity of waste oil is located around the boiler house. Some of this oil has been spilled on the soil and gravel, however the depth that the stained soil extends to is not known. • Other environmentally sensitive materials found on the Property include small quantities of old batteries, tires, gasoline and paint cans. ' • There is other debris and waste materials on the Property that is not of environmental concern, including wood, metal, empty containers of various sizes and paper type waste. Conclusions • Waste oil spillage has probably only been small volumes at a time, thus the staining may not have significantly impacted the soil. Recommendations • If further assessment of the vertical extent of staining is desired to determine if the oil has impacted the soil, auger boreholes and testing should be performed. 55-gallon Drums & Staining ' Observations • Several 55-gallon drums are located east of the warehouse. Some of these are empty, others have old dried and caked ink in the bottom of them and at least one appears to be ' fairly full of oil and junk. • Ink staining of the cement and soil exists around the drums. • Labels are wrong, missing or unreadable. Conclusions ' • It is not known what is in each of these. • The impact to the soil may be negligible. Recommendations • The drums and their contents should be removed and disposed of appropriate to the contents of each one. • If further assessment of the vertical extent of staining is desired to determine if the oil or ink has impacted the soil, auger boreholes and testing should be performed. Soil Staining Cleanup - 1995 Observations There were four areas of stained soil that were addressed by Universal Engineering Consultants in 1995. This work is documented in two reports; both dated March 24, 1995 (attached in Appendix J). These areas are summarized below.