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Mr Kyle Christie April 14, 1995 Page 3 • survey notes are included with this report as Appendix F Monitoring wells MW-3 through MW-5 will be incorporated into the quarterly groundwater monitoring and sampling program at this site Soil samples were screened for the presence of hydrocarbons in the field using a photoionization detector (PID) The PID readings were recorded on the borehole logs In addition, the breathing zone in the work area was periodically monitored and recorded in the field notes Well Development and Sampling On January 5, 1995, the monitoring wells were developed and sampled using the procedures outlined in Attachment B of BC's December 6, 1994 work plan The well development field data is included with this report as Appendix G The development and equipment steam cleaning water generated during this investigation was temporarily stored on site in labeled 55-gallon drums The stored water was disposed of by Integrated Wastestream Management on February 3, 1995 Summary of Findings Three soil samples were collected from each of the new groundwater monitoring well boreholes for laboratory analysis The soil samples were submitted under chain-of-custody to Sequoia Analytical Laboratories for analysis of benzene, toluene, ethylbenzene, and xylenes (BTEX) and total petroleum hydrocarbons as gasoline (TPH-G) using Environmental Protection Agency (EPA) Methods 5030/8020 and 8015 Modified Table 1 presents the analytical results of the soil samples collected from MW-3 through MW-5 Appendix H of this report contains the full laboratory report for the soil samples. The analytical results of soil samples indicate BTEX and TPH-G are not present in the soil in the locations of monitoring wells MW-3 and MW-4 Hydrocarbon constituents were not identified in the soil samples collected from depths of 6 and 11 feet bgs in the MW-5 borehole. Minor benzene (0 01 mg/kg) and xylenes (0 021 mg/kg) were identified in the soil sample collected from a depth of 16 feet bgs in the MW-5 borehole The source of the benzene and xylenes identified in the 16 foot sample in MW-5 is most likely the groundwater because this sample was collected from the capillary fringe. The groundwater samples collected from wells MW-3 through MW-5 were transported and submitted to Sequoia Analytical Laboratory under chain-of-custody The groundwater samples were analyzed for BTEX and TPH-G using EPA Methods 5030/8020 and 8015 Modified. Table 2 presents the analytical data for the groundwater samples collected from the newly installed monitoring wells Appendix I of this report contains the full laboratory report for the groundwater samples Hydrocarbons were not identified in the groundwater samples i Use or disclosure of data contained on this sheet is subject to the restriction specified at the beginning of this document L 9s2\REPORTs\W ELLN S TL.RPT