Disturbed Land Reclamation
Gregory Vandeberg
University of North Dakota
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Time
Critical Removal Action in Response to Contaminated Soils
Along The Eastside Ditch Near Deer Lodge, Montana G.S. Vandeberg, D.J. Dollhopf, D.R. Neuman (
Reclamation Research Unit, Montana State University, Bozeman,
MT),
P.D. Smith (CH2MHill, Boise, ID), W. Bluck (W.B.E. Inc.,
Helena,
MT) and S. Brown (U.S. Environmental Protection Agency, Helena,
MT).
Historically irrigated lands along the Clark Fork River are
contaminated with heavy metals due to upstream mining and smelting
activities. The Reclamation Research
Unit, in conjunction with W.B.E, Inc. and CH2MHill performed oversight
for sampling and remedial actions along the Eastside Ditch for the U.S.
EPA. Soil samples were collected from 17
residences and adjacent pastures, and 2 pastures
in 1998 and 1999. The soil samples were
analyzed for arsenic, copper, lead, zinc and pH. Soils
were excavated and replaced in 8 residential yards as of November 1999
(remaining soil arsenic levels are typically below 70 mg/kg). In addition, 10 adjacent pastures were tilled
and limed as of November 1999. Further
sampling and remedial activities are expected to continue in Spring
2000. |
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