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| Title | Restover Truck Stop Ground Water Monitoring, January and April 1994 | |
| Month-Year Published | October 1994 | |
| Online Availability |
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| Short Description |
This document is one in a series describing the results of ground water sampling at Restover Truck Stop. Ecology has conducted ground water sampling at the site from 1987 to the present. To remediate soil and ground water contamination a vapor extraction system (VES) was constructed in the summer of 1993. The VES has been operating steadily since February 1994. To determine the effectiveness of the cleanup, ground water monitoring was expanded from semiannual to quarterly sampling in the fall of 1993. This technical document describes the results of samples collected in January and April 1994. (Also see abstract below) | |
| Publication Number | 94-161 | |
| Author(s) | Marti, P. | |
| Print Availability | ||
| Number of pages | 4 pp.+ app (46 total) | |
| Keywords | flow, ground water monitoring, groundwater, hydrocarbons, monitoring, petroleum, soil, vapor, water, water quality, wells | |
| Abstract | Long Description |
This document is one in a series describing the results of ground water sampling at Restover Truck Stop. Ecology has conducted ground water sampling at the site from 1987 to the present. To remediate soil and ground water contamination a vapor extraction system (VES) was constructed in the summer of 1993. The VES has been operating steadily since February 1994. To determine the effectiveness of the cleanup, ground water monitoring was expanded from semiannual to quarterly sampling in the fall of 1993. This technical document describes the results of samples collected in January and April 1994. In January, water levels, which are used to determine ground water flow direction, were measured in ten wells and samples were collected from four wells. In April, six wells were sampled. All samples were analyzed for benzene, toluene, ethylbenzene, and total xylenes (BTEX), and total petroleum hydrocarbons as gasoline (TPH-G). Overall, BTEX concentrations in the upper aquifer have decreased substantially since 1989. Concentration decreases are probably due to a combination of plume spreading, dispersion, biodegradation and reduction of source loading. Since August 1991 concentrations have been relatively stable. The VES has only been operating steadily since February 1994. The monitoring period had been too short to determine whether the VES has improved the ground water quality. |
Copyright © Washington State Department of Ecology. See http://www.ecy.wa.gov/copyright.html.
