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Toftdahl Drum Site Routine Monitoring Round III

Publication number Date Published
91-e36April 1991
VIEW NOW Toftdahl Drum Site Routine Monitoring Round III (Number of pages: 23) (Publication Size: 745KB)

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Author(s) Marti, P.
Description Ecology’s Toxics, Compliance and Ground Water Investigations Section collected samples from four domestic water supply wells located in the area surrounding the former Toftdahl Drum Site on October 23, 1990. This sampling was part of the routine ground water monitoring conducted at the site since 1987. Low concentrations of lead, chromium, copper, silver, and zinc were detected in some of the domestic wells. These concentrations were all well below state and federal drinking water criteria. Observed concentrations are consistent with previous sampling results, in that copper and zinc are the only analytes that are regularly detected in the private wells. These occurrences are probably related to well construction and plumbing materials.

Memo to Mike Wilson, April 4, 1991.
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Keywords silver, WRIA 28, investigation, drinking water, toxics, wells, compliance, water, monitoring, toxic, zinc, lead, groundwater, ground water, copper, chromium
WATERSHED Water Resource Inventory Area 28 Salmon-Washougal
DATA Environmental Information Management (EIM) #TOFTDAHL


Toftdahl Drum Site Ground Water Monitoring, June 24, 1996