ARCHIVED REPORTS_XR0008736 - Laserfiche WebLink

Home Browse Search

5 8 Summary of Soil Sample Analytical Results . During the additional site characterization assessment activities, which took place on December 9 through 16, 2002, sixty(60) soil samples were submitted to ZymaX for analytical testing Twenty-five of the soil samples submitted for laboratory analysis were reported to contain one or more petroleum hydrocarbon constituent concentrations above their respective laboratory equipment practical quantitation limits (PQLs) A summary of soil sample analytical results from this phase of site assessment is provided in Table 5, Additional Site Assessment, Groundwater Monitor Wells, Soil Sample Analytical Results — ' Petroleum Hydrocarbons and Fuel Oxygenates The distribution of selected constituent concentrations are shown on Figure 10, Geologic Cross-Sections A-A' and B-B' TPHg was detected above the laboratory PQL's which ranged from 0 5 to 100 milligrams per kilogram (mg/kg, equivalent to parts per million) in seventeen (17) soil samples at concentrations ranging from 16 ' mg/kg in soil sample MW-14/30' to 2,800 mg/kg in soil sample EX-1/40' ' Benzene was detected above the laboratory PQL's which ranged from 0 005 to 1 0 mg/kg in seventeen (17) soil samples at concentrations ranging from 0 014 mg/kg in soil sample YEAS-3/60' to 3 5 mg/kg in soil sample EX-1/40' Toluene was detected above the laboratory PQLs, which ranged from 0 005 to 1 0 ' - mg/kg, in eighteen (18) soil samples at concentrations ranging from 0 006 mg/kg in soil samples VEAS- 1/65' and VEAS-2/30' to 120 mg/kg in soil sample EX-1/40' Ethylbenzene was detected above the laboratory PQL's which ranged from of 0 005 to 10 mg/kg in seventeen (17) soil samples at concentrations ranging from 0 007 mg/kg in soil sample VEAS-2/50' to 42 mg/kg in soil sample EX- 1/40' Total Xylene constituents were detected above the laboratory PQLs which ranged from 0 005 to ' 10 mg/kg in twenty-four (24) soil samples at concentrations ranging from 0 009 mg/kg in soil sample VEAS-2/55' to 330 mg/kg in soil sample EX-1/40' ' Fuel oxygenates TAME, TBA, DIPE and ETBE were not detected above the laboratory PQLs, which ranged from 0 005 to 10 mg/kg, in the sixty soil samples submitted for laboratory analysis during the ' additional site assessment activities MTBE was detected above the laboratory PQLs which ranged from 0 005 to 10 mg/kg in one soil sample submitted for laboratory analyses in one sample, VEAS-1/30, at a concentration of 0 006 mg/kg A summary of soil sample analytical result for this phase of additional site ' assessment is provided in Table 5 Laboratory reports and chain-of-custody documentation is included in Appendix F 5 9 Summary of Groundwater Sample Analytical Results ' On January 16, 2003, ATC personnel collected groundwater samples from 17 groundwater monitoring wells, three from remediation wells VW-1 through VW-3 and one from extraction well (EX-1) ATC utilized the attached groundwater monitoring sampling procedures described in Appendix C to collect ' groundwater samples from wells MW-1 through MW-17, VW-1 through VW-3 and EX-1 Groundwater samples collected were analyzed for total petroleum hydrocarbons characterized as gasoline (TPHg), EZ 100966ASAR rpt ATC Assocsates Inc ' IISan Diego1EZ Serve11009661Reports1100966SAR001 rpt ATC Project No 43 25827 0026 11