Resources and EPA ordered Doe Run Company
to clean and cover all trucks and to clean the
ing operation has been established at the facility.
Soil replacement activities and sampling were
accelerated, especially concentrating on resi-
dences with children who had elevated blood
lead levels or with children under 6 years of age.
Arrow Stone Park, Montana
In a health consultation conducted in fiscal year
2001, ATSDR resolved questions about whether
arsenic-contaminated soil located in a Montana
park posed health hazards. Arrow Stone Park
was recently developed along the Clark Fork
River outside Deer Lodge, Montana, in Powell
County. The park is within the Clark Fork
River Operable Unit of the Milltown Reservoir
Sediments National Priority List (NPL) Site,
Herculaneum, Missouri
heavy metals from historic mining activities.
or above 10 micrograms per deciliter of blood,
Most of Arrow Stone Park is in the flood plain
the level of health concern. In addition, the com-
and was considered potentially affected by the
munity was assessed to ensure that all children
potentially at risk were identified, that testing
was offered, and that the risks associated with
In previous exposure investigations in the Deer
lead exposure were communicated to the chil-
Lodge area, high concentrations of arsenic
dren's family members. Numerous health edu-
had been measured in soil near Arrow Stone
cation activities were provided for residents,
Park. Local and state health officials requested
local physicians, and community officials
ATSDR's assistance to resolve questions about
during fiscal year 2001. The results of the
the safety of Arrow Stone Park for recreational
blood lead screening have been summarized in a
use by children and adults.
health consultation to be released in 2002.
Because of changes in the park, the existing
soil data were not representative of current site
conditions. ATSDR worked throughout 2001 to
eral regulators have intensified their efforts to
reach an agreement with the EPA on the need
address the areas where ore has been spilled and
for sampling and appropriate risk-based concen-
to prevent future spills from occurring. They
trations for the site. Upon reaching an agree-
have also focused on quickly remediating con-
ment, ATSDR collaborated with EPA, Montana
taminated residential yards and home interiors.
Department of Environmental Quality, Montana
State regulators posted signs along streets noti-
Department of Public Health and Human
fying residents of the risk from exposure to the
Services, Powell County, and Montana State
spilled ore and advised them to avoid affected
University to develop a sampling and analysis
streets. The Missouri Department of Natural
chapter 1 21
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