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KLEINFELDER <br /> resampling and disposal of soil from the excavated area, the SJCEHD closed the case on the <br /> spill <br /> The CRWQCB requested additional assessment of the area On August 29 and 30, 1995, <br /> Kle>infelder drilled six borings around and through the tank area Soil samples were collected at <br /> the ground surface and at 5 foot intervals from the six borings Concentrations of total petroleum <br /> hydrocarbons (TPH) as diesel were reported in angled boring AB-3 at depths of 5 (500 mg/kg) <br /> and 10 feet (3,900 mg/kg) TPH concentrations were also reported in VB-2 at 22 mg/kg at a <br /> depth of 25 feet The petroleum hydrocarbons detected in boring AB-3 appear to be diesel <br /> associated with operation of the former aboveground storage tanks (AGST) Since TPH <br /> concentrations were not detected in soil samples collected from VB-2 above 25 feet, the <br /> concentrations reported may be due to migration of TPH in groundwater from a nearby source or <br /> vadose zone transport Surface samples collected adjacent to each boring also were impacted <br /> with TPH concentrations ranging from 22 to 3,400 mg/kg Results of this assessment are <br /> ill <br /> presented Kle>nfelder's Soil Assessment report dated October 19, 1995 <br /> Based on the TPH concentrations reported in samples collected from <br /> P P AB-3, Kle;<nfelder <br /> recommended that the soil in this area be excavated and remed>ated, or disposed of at an <br /> appropriate waste disposal facility <br /> In a letter dated June 5, 1996, Mr Joel Weiss of the CRWQCB agreed with the recommendations <br /> for soil excavation and requested the submittal of soil remediation work plan by June 28, 1996 <br /> Kleinfelder prepared a Soil Excavation Work Plan dated June 26, 1996 The work plan was <br /> reviewed and approved by the CRWQCB in a letter dated July 16, 1996 <br /> 23-482276-Boo/CR96S276 Page 3 of 11 October 17, 1996 <br /> Copyright 1996 Klcintelder,Inc <br />