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| Title | Investigation of Petroleum Products in Black Lake Sediment and Surface Water Adjacent to an Underground Storage Tank Site | |||
| Month-Year Published | September 2005 | |||
| Online Availability |
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| Short Description |
In 1989, soil and groundwater beneath the Black Lake Grocery was found to be contaminated with petroleum products from leaking underground tanks. In November 2004, remediation was completed. Black Lake, adjacent to the site, was never evaluated for impacts. In March 2005, the Department of Ecology conducted a study to evaluate sediment and water downgradient of the site. Samples were analyzed for total petroleum hydrocarbons, benzene, toluene, ethylbenzene, xylenes, polynuclear aromatic hydrocarbons (PAHs), and lead. Only low concentrations of PAHs and lead were detected in sediments, at two to three orders of magnitude below levels considered to affect aquatic infauna. (Also see abstract below) | |||
| Publication Number | 05-03-030 | |||
| Author(s) | Coots, R. | |||
| Print Availability | ||||
| Number of pages | 19 + app (35 total) | |||
| Keywords | investigation, lake, lead, order, petroleum, product, sediment, soil, storage, surface water, underground storage tank, water | |||
| Subject Waterbodies |
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| Related Publications | Title | Relationship | ||
| Quality Assurance Project Plan: Investigation of Petroleum Products in Black Lake Sediment and Surface Water from Underground Tanks. | similar topic | |||
| Abstract | Long Description |
In 1989, soil and groundwater beneath the Black Lake Grocery was found to be contaminated with petroleum products from leaking underground tanks. The grocery store is located at 4409 Black Lake Boulevard SW, west of Tumwater, Washington. In November 2004, remediation of the site (treatment wall) was implemented. Sediments and water in Black Lake adjacent to the site were never evaluated for the presence of petroleum products or impacts to benthic communities. In response, the Department of Ecology conducted a study to evaluate sediments and water from Black Lake downgradient of the site. In March 2005, sediment and water samples were collected and analyzed for total petroleum hydrocarbons (TPH-gasoline), benzene, toluene, ethylbenzene, xylenes (BTEX), polynuclear aromatic hydrocarbons (PAHs), and lead. Ancillary water quality parameters included temperature and conductivity. Analysis of sediments and surface water in Black Lake adjacent to the site showed no significant levels of contamination. Only low concentrations of PAHs and lead were detected in sediments. Concentrations of total PAHs ranged from 12 to 218 ug/Kg with a mean of 140 ug/Kg, dry weight. Concentrations of individual and total PAHs did not approach recommended sediment quality values, and were typically two to three orders of magnitude below levels considered to adversely affect aquatic infauna. |
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