Click here
for official Final report: MDCH Dioxins in Wild Game Taken from the
Tittabawassee River Floodplain South of Midland, Midland and Saginaw
Counties, Michigan EPA ID# MID980994354 Final Report April 29, 2005.
Report is officially peer reviewed and backed by the Federal Government
ATSDR.
Click here for official State of Michigan
T.River Flood Plain Wild Game Consumption Advisory
EPA indicates there is much more in the Tittabawassee River than
contaminated fish and dioxin,
click here
EPA July 2004 Memo concerning Dow Wild Game Study
Potential health risks to persons consuming game.
Dioxin contamination of game indicate contamination of the terrestrial food chain
Unacceptable, serious aquatic ecological risks to fish, fish eating birds, and mammals.
There is particular concern regarding distortions
of risk information which are causing inaccurate risk messages to the public.
Click here to view raw data used to make the following
charts
Note: in the 'Radar" graph
below, each circle gridline represents a threshold that is
at least 10 times the level of the adjacent circle inside it (logarithmic scale).
Example: a sample plotted between the 10 and 100 grid rings represent values that are
at least 10 to 99 times the value of samples between the 1 and 10 rings and 100 to 999
times
the value of samples between the 0.1 and 1 rings. Lines connect all the values in a
series.
The individual data points represent sample TEQ values from the chart that follows.
Squirrel Raw Data
Squirrel
Area
TEQ
(pg/g)
Percent
(kg)
Wet
Wt.
Lipids
Body Wt.
Age
Sex
TR01SL01M1
Ref
area
0.061
3.3
0.794
IMMATURE
FEMALE
TR01SL02M1
Ref
area
0.105
3.5
0.794
IMMATURE
MALE
TR01SL03M1
Ref
area
0.04
4.07
0.539
IMMATURE
MALE
TR01SL04M1
Ref
area
0.072
2.5
0.765
IMMATURE
FEMALE
TR01SL05M1
Ref
area
0.076
5
0.992
SPRING
BORN
MALE
TR01SL06M1
Ref
area
0.057
3
0.936
IMMATURE
FEMALE
TR01SL07M1
Ref
area
0.047
2.9
0.765
IMMATURE
FEMALE
TR01SL08M1
Ref
area
0.107
3.1
0.794
ND
ND
TR01SL09M1
Ref
area
0.086
5.4
0.879
IMMATURE
FEMALE
TR01SL10M1
Ref
area
0.072
2
0.85
IMMATURE
FEMALE
TR01SL11M1
Ref
area
0.06
3.4
0.992
SUMMERBORN
MALE
TR01SL12M1
Ref
area
0.964
SPRING
BORN
MALE
TR02SL01M1
Smith
Crossing
0.092
6.07
0.822
IMMATURE
FEMALE
TR02SL02M1
Smith
Crossing
0.107
8.5
0.992
IMMATURE
FEMALE
TR02SL03M1
Smith
Crossing
0.25
3.1
0.595
SUBADULT
FEMALE
TR02SL04M1
Smith
Crossing
0.127
3.3
0.879
IMMATURE
MALE
TR02SL05M1
Smith
Crossing
0.205
6.9
1.134
IMMATURE
MALE
TR02SL06M1
Smith
Crossing
0.503
5.3
0.879
SPRINGBORN
MALE
TR02SL07M1
Smith
Crossing
0.664
1.2
0.964
IMMATURE
FEMALE
TR02SL08M1
Smith
Crossing
0.375
4.5
1.191
IMMATURE
FEMALE
TR02SL09M1
Smith
Crossing
0.226
5.7
0.765
IMMATURE
FEMALE
TR02SL10M1
Smith
Crossing
1.48
7.1
0.765
SUBADULT
FEMALE
TR03SL01M1
Imerman
Park
2.72
5.7
0.652
IMMATURE
FEMALE
TR03SL02M1
Imerman
Park
4.29
6.7
0.936
MATURE
MALE
TR03SL03M1
Imerman
Park
0.654
3.3
0.482
IMMATURE
MALE
TR03SL04M1
Imerman
Park
0.687
4.5
0.765
ADULT
MALE
TR03SL05M1
Imerman
Park
0.197
2.9
0.624
IMMATURE
FEMALE
TR03SL06M1
Imerman
Park
0.162
2.9
0.539
IMMATURE
FEMALE
TR03SL07M1
Imerman
Park
0.722
5.3
0.539
IMMATURE
MALE
TR03SL08M1
Imerman
Park
0.083
2
0.765
EARLY
SUMMER
MALE
TR03SL09M1
Imerman
Park
3.57
3.5
0.822
IMMATURE
FEMALE
TR03SL10M1
Imerman
Park
0.141
4.2
0.482
IMMATURE
FEMALE
GES memo (7/16/04) to the MDEQ indicates the results of the Dow/Entrix Wild Game study
in the Tittabawassee River Flood plain confirms findings of MDEQ/GES 2003 T.River Aquatic
Ecological Risk Assesement. Conclusions:
Review of the Entrix (2004) report has shown that the data contained therein support one
of the major conclusions of the Michigan DEQ terrestrial ecological risk assessment (GES,
2004), that is that biota and food chains on the Tittabawassee River downriver of Midland
are contaminated by PCDDs and PCDFs. A reasonable conclusion from this is that predators
and scavengers at the tops of these food chains are likely to be even more exposed to
these contaminants than the deer, squirrels, and turkeys sampled in the Entrix (2004)
study.
However, the Entrix (2004) study was designed to generate data for an evaluation of risk
to human health, rather than to ecological receptors. Because of this, design elements in
the Entrix (2004) study, though perhaps appropriate for a human health risk analysis,
result in an underestimation of the contaminant concentrations to which wildlife would be
exposed and, hence, the magnitude of the risks incurred. These design elements comprise:
The sampling was confined to organisms which, because of their diets, are unlikely to
bioaccumulate PCDDs and PCDFs to the extent that other organisms would.
The carcass handling procedures resulted in a likely underestimation of the magnitudes
of the PCDD/PCDF whole-body burdens to which predators and scavengers may be exposed.
The sample spatial distribution almost certainly results in an underestimation of the
PCDD/PCDF body burdens of turkeys in the lower sections of the floodplain, and, hence, in
the potential exposures to their predators and scavengers.
Tittabawassee
River Watch www.trwnews.net
