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r Two soil samples were taken at a depth of 14 feet, from the north and south ends of the tank locations respectively (TK1 N&S and TK2 N&S) . Two (2) line samples were also taken, piping 1 at 51 , ifs, from the south edge of the excavatoin and piping 2 at 31 , under the former pump island location (see map #5) . Four composi.ts were taken from the spoil pile before it was returned to the excavation. Sample analyses results showed detectable quantities of TGH-diesel in all samples, TKi S-2300 mg/kg, TK1 N-11 :0 mg/kg, TK2 S-240 mg/kg, TK2 N--120 mg/kg, piping 1-2700 mg/kg, piping 2-140 mg/kg and the composits SP1, 2, 3 and 4 showed a combined total of 900 mg/kg. Detectable levels of S. E. T. & X were found in samples TKI N, Total. Xylenes--44 ug/kg. TK1 S, Toluene--48 ug/kg, Ethyl Benzene-330 ug/kg and Total Xylene-920 ug/kg. Piping 1, Toluene-34 ug/kg, Ethyl Benzene-470 ug/kg and Total Xylene-510 ug/kg. Composits SP1, 2, 3 and 4 combined show Total Xylene-13 ug/kg. All samples were analyzed using California DOHS LUFT method for diesel / 3550 and constituent volatile aromatics, Benzene, Ethyl Benzene, Toluene and Total Xylene (BETX) using USEPA Test Method 8020 (see soil sample analyses chart ) . Soil removed from the southeast and northeast corners of the tank locations showed signs of soil discoloration and had an odor of petroleum. There was no obvious sign of contamin- ation on the west side of the excavation. Based upon the results of soil sample analyses, concentra- tions oncentra- tions of TPH and the volatile aromatics present in the tank and pipeline areas, additional site characterization and/or~ remediation will be required for closure. 6. Remediation Steps . Concrete Inc. has retained WM. Hunter and Associates, Registered Geologists and Jim Thorpe Oil, Inc. to undertake the next phase of this cleanup project. After consultation with SJPHS/EHD, Wm. Hunter and Associates and Jiro Thorpe Oil, Inc. , Concrete Inc. has decided to remove as much of the contamination remaining beneath the tank pit area as possible by over excavation. The proposed excavation will start approximately 5 feet north of the north end of the original excavation and extend southward a distance of approximately 40 feet. The new excavation will extend 20 feet in an easterly direction from the western boundry of the orginal tank location. The plan is to excavate to a depth of 20 feet and slight adjustments, up or down, made if necessary. The resulting excavation will be approximately ;.0 feet wide by 40 feet long by 18 to 20 feet deep (see drawings 02 & 3) . Pipeline excavation will be necessary as the piping samples indicate contamination along the product line route. This contamination will be removed by excavating a trench eight (8) fret deep and eight (S) feet wide along the path of