Laserfiche WebLink
e i <br /> Working To Restore Nature <br /> In August 1993, wells MW-1, MW-2, and MW-3 were monitored and sampled. Analytical <br /> results showed that MW-1 had no measurable concentrations of petroleum hydrocarbons in the <br /> groundwater Wells MW-2 and MW-3 contained detectable levels of petroleum hydrocarbons <br /> SAMPLING ACTIVITIES <br /> On March 28, 1994, groundwater samples were collected by RESNA Industries from three <br /> rshallow monitoring wells (MW-1, MW-2 and MW-3) The locations of the monitoring wells <br /> are shown on Plate 2 <br /> Prior to collection of groundwater samples, the depth to water, pH, electrical conductivity, and <br /> temperature were measured in the monitoring wells and recorded A minimum of three well <br /> volumes were removed from each well prior to sampling Samples were collected from each <br /> well using disposable bailers <br /> The groundwater samples collected from each well were submitted to Argon Mobile Laboratories <br /> (ELAP cert no 1873) for analysis of total petroleum hydrocarbons as gasoline (TPHg) and <br /> benzene, toluene, ethylbenzene, and xylenes (BTEX) utilizing EPA methods 50301801518020 <br /> Groundwater well purge and sample logs are provided in Appendix A <br /> ANALYTICAL RESULTS <br /> All petroleum hydrocarbon analytes for the sample collected from well MW-1 were reported <br /> below laboratory method detection limits The sample collected from well MW-2 contained <br /> ' concentrations of TPHg (860 µg/f), benzene (3 8 µg1 f), toluene (9 8 µg1 f), ethylbenzene (4 5 <br /> µg/f), and xylenes (41 µgle) The sample collected from well MW-3 contained concentrations <br /> of TPHg (180,000µgIf), benzene (160µg1f), toluene (8,300µg/f), ethylbenzene (2,400 jug/f), <br /> and xylenes (12,000µglf) A summary of analytical results 1s presented 1n Table 1 Laboratory <br /> data sheets and chain-of-custody documentation are provided in Appendix B <br /> 1500781QUARTLYIIQR-1994 FNL 2 <br />