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. 1 5.2.3 Procedure--Observation log 10/26/95 The third boring hole was on the West end of the excavation. We again used the six foot diameter auger. Due to the size of the auger the first two holes were overlapped. The soil removal was much the(same as the East hole, with the exception of the hydrocarbon smell. Only a slight smell of hydrocarbon was detected, appearing at approximately sixteen'feet. Samples taken at sixteen feet, (sidewall), and at hole termination (37 feet) were all non-detect for TPHG and BTEX: The hole was filled with control density fill. 5.2.4 Procedure--Observation log 10/27/95 . Two final holes were made with a 24 inch auger, to remove the last of the soil remaining between the six foot West and East borings. During these borings little or no hydrocarbon odor was noticed. They were conducted to a depth of thirty-seven feet. The borings were filled withi control density fill. I � i, Confirmation samples were taken from each of the boring terminus. Analytical results were non-detect. i All boring were filled to approximately fifteen,feet below ground level. This was the level of the native soil in the excavation prior to performing the current 4 Remediation. The filled borings were covered with pea gravel to a depth of t approximately four to six inches below ground level. A four to six inch concrete cap was placed over the entire excavation. 5.3 Stockpiled Soils Removed soils wore temporarily stockpiled on site. ;'Soil piles were covered with plastic to control/prevent airborne movement of soils. Approximately 80 cubic yards of soils and 30 cubic yards of soil mixed with pea gravel were pilled on-site. After analytical data was received, REMCO was contacted and they approved the material for Remediation at their site in Richmond. The certificate of remediation is contained in the Appendix. Page 7 4t I