PETITIONED PUBLIC HEALTH ASSESSMENT
LAFARGE CORPORATION - ALPENA PLANT
ALPENA, ALPENA COUNTY, MICHIGAN
Table 11.Concentrations of metals in fly ash samples collected in Alpena by the MDNR (October 1991 - June 1992).
Chemical | Concentration (ppm) |
No. of samples above MDEQ Industrial/Commercial Criteria (Ref. 13) |
No. of samples above MDEQ Residential Criteria (Ref. 13) |
Comparison Value (ppm) |
|
Maximum | Median | ||||
arsenic | 31.2 | 15.6 | 0 | 5 | 0.6E, 0.47C |
barium | 517 | 288.5 | 0 | 0 | 140R |
cadmium | 0.08 | ND | 0 | 0 | 0.4E, carcinogen |
chromium | 13 | 11 | 0 | 0 | 6R, carcinogen |
copper | 70 | 38 | 0 | 0 | NA |
lead | 81 | 25 | 0 | 0 | carcinogen |
mercury | 1.07 | ND | 0 | 0 | NA |
nickel | 25 | 19 | 0 | 0 | 40R, carcinogen |
selenium | 5.9 | 2.6 | 0 | 0 | 10E |
silver | 3 | ND | 0 | 0 | 10R |
zinc | 190 | 70 | 0 | 0 | 600E |
Reference: 22
Shaded chemicals exceeded ATSDR Comparison Values
ND -- Not Detected - for medians, in more than ½ of the samples
(VI) -- For chromium(VI)
NA -- None Available
carcinogen -- Carcinogen (proven, probable, or possible) but no CREG available
Comparison Value Bases:
E -- ATSDR Environmental Media Evaluation Guides (EMEGs),
chronic exposure
R -- ATSDR Reference Dose Media Evaluation Guides (RMEGs),
calculated from U.S. EPA Reference Dose
C -- ATSDR Cancer Risk Evaluation Guides (CREGs)
Table 12. Concentrations of chemicals in air samples collected in the Alpena
area by a Lafarge contractor, March 1995-March 1996, May 1997-June 1998.
Parameter | Date | Concentration
(µg/m3) |
Comparison Value
(µg/m3) |
||||||
Besser School (1995-6)/Immanuel Lutheran School (1997-8) | Lincoln School (1995-6)/Sunrise Center (1997-8) | North Point | |||||||
Maximum | Median | Maximum | Median | Maximum | Median | ||||
acenaphthene | 95-96 | 0.0037 | 0.0012 | 0.0047 | 0.0015 | 0.002 | 0.00029 | NA | |
acenaphthylene | 95-96 | 0.0078 | 0.00059 | 0.011 | 0.0018 | 0.0084 | 0.000097 | NA | |
anthracene | 95-96 | 0.0018 | 0.00034 | 0.0065 | 0.00081 | 0.002 | 0.00011 | NA | |
barium | 95-96 | 0.06 | 0.02 | 0.07 | 0.02 | 0.06 | 0.015 | NA | |
benzene | 95-96 | 10.1 | 0.650 | 6.50 | 1.53 | 3.58 | ND | 13Ei, 0.12C | |
97-98 | 2.1 | 1.2 | 3.4 | 1.25 | 2 | ND | |||
benzo(a)anthracene | 95-96 | 0.00054 | 0.00005 | 0.001 | 0.000056 | 0.00042 | ND | carcinogen | |
benzo(a)pyrene | 95-96 | 0.00044 | 0.000054 | 0.00077 | 0.000062 | 0.00055 | 0.00002 | carcinogen | |
benzo(b)fluoranthene | 95-96 | 0.0011 | 0.00016 | 0.0018 | 0.00019 | 0.0012 | 0.000045 | carcinogen | |
benzo(e)pyrene | 95-96 | 0.00038 | 0.000095 | 0.001 | 0.000089 | 0.00066 | 0.000027 | carcinogen | |
benzo(g,h,i)perylene | 95-96 | 0.00048 | 0.0001 | 0.0013 | 0.00013 | 0.00069 | 0.0000255 | NA | |
benzo(k)fluoranthene | 95-96 | 0.00044 | 0.000063 | 0.00095 | 0.000076 | 0.00042 | 0.000018 | carcinogen | |
benzyl chloride | 95-96 | 4.26 | ND | 1.05 | ND | 1.16 | ND | carcinogen | |
bromomethane | 95-96 | 19.0 | ND | 10.3 | ND | 21.3 | ND | 19E | |
97-98 | ND | ND | 0.73 | ND | ND | ND | |||
carbon tetrachloride | 95-96 | 0.703 | ND | 1.09 | ND | 3.32 | ND | 320Ei, 0.07C | |
97-98 | 1.1 | 0.81 | 1.1 | 0.81 | 0.92 | 0.77 | |||
chlorobenzene | 95-96 | 1.68 | ND | ND | ND | ND | ND | NA | |
97-98 | ND | ND | ND | ND | ND | ND | |||
chloroethane | 95-96 | ND | ND | ND | ND | ND | ND | 10,000R | |
97-98 | ND | ND | 2.7 | ND | 0.57 | ND | |||
chloroform | 95-96 | 2.98 | ND | ND | ND | ND | ND | 98E, 0.04C | |
97-98 | 0.66 | ND | 1.3 | ND | ND | ND | |||
chloromethane | 95-96 | 2.94 | 1.28 | 2.52 | 1.27 | 3.57 | 1.26 | 100E | |
97-98 | 4.4 | 1.9 | 15 | 2.1 | 5.4 | 1.9 | |||
chrysene | 95-96 | 0.001 | 0.00016 | 0.002 | 0.00018 | 0.0014 | 0.000053 | carcinogen | |
dibenzo(a,h)anthracene | 95-96 | 0.000056 | 0.000008 | 0.00028 | ND | 0.000093 | ND | carcinogen | |
1,2-dichlorobenzene | 95-96 | 6.72 | ND | 3.79 | ND | 22.6 | ND | NA | |
97-98 | ND | ND | 1.9 | ND | ND | ND | |||
1,4-dichlorobenzene | 95-96 | 3.36 | ND | ND | ND | 7.33 | ND | 600Ei, carcinogen | |
97-98 | ND | ND | ND | ND | ND | ND | |||
dichlorodifluoromethane | 95-96 | 4.48 | 2.87 | 4.33 | 2.97 | 7.04 | 2.82 | NA | |
97-98 | 6.3 | 3.9 | 6.1 | 4.1 | 4.9 | 3.85 | |||
1,2-dichloroethane | 95-96 | 1.03 | ND | ND | ND | ND | ND | 830E, 0.04C | |
97-98 | ND | ND | ND | ND | ND | ND | |||
dioxins and furans (total) | 95-96 | -- | -- | 0.000032 | 6.7E-07 | -- | -- | 7.7E-08C | |
2,3,7,8-TCDD | 95-96 | -- | -- | 2.6E-08 | ND | -- | -- | ||
TEQ | 95-96 | -- | -- | 2.07E-07 | 2.96E-09 | -- | -- | ||
1-ethyl-4-methylbenzene | 95-96 | ND | ND | 3.44 | ND | ND | ND | NA | |
ethylbenzene | 95-96 | 2.87 | ND | 3.18 | ND | 1.68 | ND | 870Ei | |
97-98 | 1.4 | ND | 2 | ND | ND | ND | |||
fluoranthene | 95-96 | 0.0042 | 0.00097 | 0.0043 | 0.0011 | 0.0035 | 0.00022 | NA | |
fluorene | 95-96 | 0.0069 | 0.0019 | 0.0078 | 0.0031 | 0.0057 | 0.0008 | NA | |
indeno(1,2,3-c,d)pyrene | 95-96 | 0.00038 | 0.000072 | 0.00081 | 0.0001 | 0.0005 | 0.000021 | carcinogen | |
mercury particulate | 95-96 | 0.00042 | 0.000021 | 0.00035 | 0.000015 | 0.00017 | 0.000013 | 0.14E | |
mercury vapor | 95-96 | 0.013 | 0.0025 | 0.0077 | 0.0025 | 0.0071 | 0.0020 | ||
methylene chloride | 95-96 | 1.48 | ND | 24.7 | ND | 3.14 | ND | 100Ei, 2.5C | |
97-98 | 11 | 0.97 | 3.1 | 1.1 | 1.6 | 0.91 | |||
2-methylnaphthalene | 95-96 | 0.06 | 0.015 | 0.85 | 0.024 | 0.036 | 0.0045 | NA | |
naphthalene | 95-96 | 0.26 | 0.054 | 0.42 | 0.097 | 0.15 | 0.024 | 10E | |
nickel | 95-96 | 0.03 | ND | ND | ND | ND | ND | 0.2E, carcinogen | |
perylene | 95-96 | 0.00019 | 0.000024 | 0.00091 | 0.000022 | 0.000082 | ND | NA | |
phenanthrene | 95-96 | 0.012 | 0.0039 | 0.017 | 0.0059 | 0.01 | 0.00091 | NA | |
pyrene | 95-96 | 0.0043 | 0.00067 | 0.0048 | 0.00095 | 0.004 | 0.00016 | NA | |
styrene | 95-96 | 13.4 | ND | 3.64 | ND | ND | ND | 60E | |
97-98 | 1.9 | ND | 1.7 | ND | ND | ND | |||
1,1,2,2-tetrachloroethane | 95-96 | ND | ND | ND | ND | ND | ND | 2,800Ei, 0.02C | |
97-98 | ND | ND | 0.6 | ND | ND | ND | |||
tetrachloroethylene | 95-96 | 1.58 | ND | 1.79 | ND | ND | ND | 270E, 2C | |
97-98 | 5 | ND | 39 | 0.285 | 5.1 | ND | |||
toluene | 95-96 | 21.4 | 2.14 | 203 | 3.79 | 13.8 | 0.651 | 3,800E | |
97-98 | 14 | 2.5 | 51 | 3.4 | 5.2 | 0.735 | |||
1,1,2-trichloro-1,2,2-trifluoroethane | 95-96 | ND | ND | 0.935 | ND | 1.01 | ND | NA | |
1,2,4-trichlorobenzene | 95-96 | 11.9 | ND | ND | ND | ND | ND | NA | |
97-98 | ND | ND | ND | ND | ND | ND | |||
1,1,1-trichloroethane | 95-96 | 0.777 | ND | 3.44 | ND | 1.11 | ND | 3,800Ei | |
97-98 | 1.9 | 0.54 | 0.7 | 0.565 | 0.8 | 0.515 | |||
trichloroethylene | 95-96 | 16.4 | ND | 5.24 | ND | 5.02 | ND | 540Ei, 0.59C | |
97-98 | 1.1 | ND | 8.4 | ND | 3.2 | ND | |||
trichlorofluoromethane | 95-96 | 2.06 | ND | 7.99 | 1.54 | 2.68 | 1.54 | NA | |
97-98 | 3.3 | 2.1 | 3.2 | 2.3 | 2.9 | 2 | |||
1,2,4-trimethylbenzene | 95-96 | 13.8 | ND | 7.86 | ND | 3.88 | ND | NA | |
97-98 | 8.9 | ND | 8.1 | ND | 0.86 | ND | |||
1,3,5-trimethylbenzene | 95-96 | 3.39 | ND | 1.13 | ND | 12.8 | ND | NA | |
97-98 | 1.6 | ND | 1.9 | ND | ND | ND | |||
vinyl chloride | 95-96 | 0.598 | ND | ND | ND | ND | ND | 77Ei, 0.012C | |
97-98 | ND | ND | 3 | ND | ND | ND | |||
xylenes (total) | 95-96 | 7.98 | ND | 17.2 | 1.12 | 8.07 | ND | 430E | |
97-98 | 7.6 | 0.72 | 13.9 | 1.3 | 2.93 | ND | |||
zinc | 95-96 | 0.06 | 0.02 | 0.25 | 0.02 | 0.09 | 0.01 | NA |
Reference: 23, 24
Shaded chemicals exceeded ATSDR Comparison Values
ND -- Not Detected, for medians, in more than 50% of
the samples
-- = Not Analyzed for
6.7E-07 = 6.7 × 10-7 = 0.00000067
NA -- None available
carcinogen -- Known, possible, or probable human carcinogen,
but no CREG available
Comparison Value Bases
E -- ATSDR Environmental Media Exposure Guide/Minimal Risk
Level -- chronic exposure
Ei -- ATSDR Environmental Media Exposure Guide/Minimal Risk
Level -- intermediate-term exposure
R -- U.S. EPA Reference Concentration
C -- ATSDR Cancer Risk Evaluation Guide
Table 13. Concentrations of suspended particulate matter in air samples
collected in the Alpena area by a Lafarge contractor, March 1995-March 1996,
May 1997-June 1998.
Parameter | Date | Concentration (µg/m3) |
|||||||
Besser School (1995-6)/Immanuel Lutheran School (1997-8) | Lincoln School (1995-6)/Sunrise Center (1997-8) | North Point | Lafarge Plant | ||||||
Maximum | Median | Maximum | Median | Maximum | Median | Maximum | Median | ||
Total | 95-96 | 96.4 | 23.1 | 121.0 | 28.2 | 56.2 | 15.8 | NS | NS |
Under 10 microns (PM-10) | 95-96 | 47.5 | 12.6 | 78.2 | 17.3 | 34.5 | 8.3 | 82.3 | 18.9 |
97-98 | 115.0 | 15.1 | 54.4 | 20.1 | 38.8 | 9.1 | 98.0 | 27.8 |
References: 23, 24
NS -- Not Sampled.
U.S. EPA's health-based national air quality standards
for PM-10 are 50 µg/m3 (measured as an annual average) and 150 µg/m3
(measured as a daily average) (49). The U.S. EPA has recently proposed a new
standard for particles less than 2.5 microns in diameter, 15 µg/m3
(measured as an annual average) and 65 µg/m3 (measured as a daily
average) (50).
Table 14. Concentrations of metals (total) in surface water samples collected
offshore from the cement kiln dust pile at the Lafarge Corporation Alpena Plant
during the IRIA, January-September, 1997.
Chemical | Date | Concentration (ppb) |
No. of samples exceeding MDEQ Contact Criteria (Ref. 13) | No. of samples exceeding U.S. EPA or MDEQ Drinking Water Standards (Refs. 11, 13) | Comparison Value (ppb) |
||
Maximum | Median | ||||||
aluminum | 1/23/97 | total | 4,300 | 655 | 0 | 0 | 20,000Ei |
dissolved | 850 | 170 | 0 | 0 | |||
7/2/97 | total | 180,000 | 8,900 | 0 | 0 | ||
dissolved | 1,300 | ND | 0 | 0 | |||
9/3/97 | total | NS | NS | NS | NS | ||
arsenic | 1/23/97 | ND | ND | 0 | 0 | 3E, 0.023C | |
7/2/97 | 190 | ND | 0 | 2 | |||
9/3/97 | ND | ND | 0 | 0 | |||
barium | 1/23/97 | ND | ND | 0 | 0 | 700R | |
7/2/97 | 1,600 | ND | 0 | 0 | |||
9/3/97 | ND | ND | 0 | 0 | |||
beryllium | 1/23/97 | ND | ND | 0 | 0 | 4M, 0.0081C | |
7/2/97 | 10 | ND | 0 | 1 | |||
9/3/97 | ND | ND | 0 | 0 | |||
cadmium | 1/23/97 | ND | ND | 0 | 0 | 2E, carcinogen | |
7/2/97 | 28 | ND | 0 | 2 | |||
9/3/97 | ND | ND | 0 | 0 | |||
chromium | 1/23/97 | ND | ND | 0 | 0 | 30R, carcinogen (VI) | |
7/2/97 | 230 | ND | 0 | 1 | |||
9/3/97 | ND | ND | 0 | 0 | |||
copper | 1/23/97 | ND | ND | 0 | 0 | 1,300MG | |
7/2/97 | 290 | ND | 0 | 0 | |||
9/3/97 | ND | ND | 0 | 0 | |||
lead | 1/23/97 | 8 | ND | 0 | 3 | 15PL, carcinogen | |
7/2/97 | 1,800 | 53.5 | 0 | 6 | |||
9/3/97 | 5 | ND | 0 | 1 | |||
manganese | 1/23/97 | 20 | ND | 0 | 0 | NA | |
7/2/97 | 3,300 | ND | 0 | 2 | |||
9/3/97 | ND | ND | 0 | 0 | |||
mercury | 1/23/97 | ND | ND | 0 | 0 | 2A | |
7/2/97 | 0.825 | 0.0351 | 0 | 0 | |||
9/3/97 | 0.00471 | 0.00155 | 0 | 0 | |||
nickel | 1/23/97 | ND | ND | 0 | 0 | 100A, carcinogen | |
7/2/97 | 260 | ND | 0 | 1 | |||
9/3/97 | ND | ND | 0 | 0 | |||
selenium | 1/23/97 | ND | ND | 0 | 0 | 50E | |
7/2/97 | 87 | ND | 0 | 1 | |||
9/3/97 | ND | ND | 0 | 0 | |||
thallium | 1/23/97 | ND | ND | 0 | 0 | 0.4A | |
7/2/97 | 83 | ND | 0 | 2 | |||
9/3/97 | ND | ND | 0 | 0 |
Other Parameters | Date | Maximum | Median | Minimum | No. of samples exceeding MDEQ Contact Criteria (Ref. 14) | No. of samples outside U.S. EPA Drinking Water Standards (Ref. 11) | Comparison Value |
pH | 1/23/97 | 8.7 | 8.2 | 7.9 | 0 | 1 | NA |
7/2/97 | 11.2 | 9.2 | 8.7 | 0 | 8 |
Reference: 3
Shaded chemicals exceeded ATSDR Comparison Values
Note: Only Aluminum was detected in any of the filtered
(dissolved metals) samples.
ND -- Not Detected - for medians, in more than ½ of the
samples
NS -- Not Sampled
(VI) -- For chromium(VI)
NA -- None Available
carcinogen -- Carcinogen (proven, probable, or possible)
but no CREG available
Comparison Value Bases:
E -- ATSDR Environmental Media Evaluation Guides (EMEGs)
R -- ATSDR Reference Dose Media Evaluation Guides (RMEGs), calculated
from U.S. EPA Reference Dose
C -- ATSDR Cancer Risk Evaluation Guides (CREGs)
M -- U.S. EPA Maximum Contaminant Level (11)
MG -- U.S. EPA Maximum Contaminant Level Goal (11)
A -- U.S. EPA Drinking Water Lifetime Health Advisory (11)
PL -- U.S. EPA Proposed Action Level for Lead in Drinking Water
(11)
Table 15. Concentrations of metals (total) in surface water samples collected
from Squaw Bay and Misery Bay (see Figure 3) during the IRIA, October 1-2, 1997.
Chemical | Concentration
(ppb) |
No. of samples exceeding MDEQ Contact Criteria (Ref. 13) | No. of samples exceeding U.S. EPA or MDEQ Drinking Water Standards (Refs. 11, 13) | Comparison Value
(ppb) |
|||
Squaw Bay | Misery Bay | ||||||
Maximum | Median | Maximum | Median | ||||
aluminum | 360 | 140 | 130 | ND | 0 | 0 | 20,000Ei |
potassium | 870 | 860 | 980 | 940 | 0 | 0 | NA |
thallium | 4 | ND | ND | ND | 0 | 1 | 0.4A |
Reference: 3
Shaded chemicals exceeded ATSDR Comparison Values
Note: Only Aluminum was detected in any of the filtered
(dissolved metals) samples.
ND -- Not Detected - for medians, in more than ½ of the
samples
NA -- None Available
carcinogen -- Carcinogen (proven, probable, or possible)
but no CREG available
Comparison Value Bases:
A -- U.S. EPA Drinking Water Lifetime Health Advisory (11)
Table 16. Schedule of MDEQ monitoring of Alpena Municipal
Water.
Analysis | Schedule | Latest analysis |
partial chemical analysis
(nitrates, nitrites, fluoride, chloride, hardness, iron, sulfate, and sodium) |
annual | June 15, 1999 |
volatile organic chemicals | annual | June 15, 1999 |
pesticides and other synthetic organic chemicals | every 3 years | July 30, 1998 |
trihalomethanes and haloacetic acids (from 4 locations in distribution system) | quarterly | December 20, 1999 |
metals | every 3 years | June 15, 1999 |
radiological contaminants | every 4 years | October 26, 1998 |
Reference: 26, 27
The sampling dates in Table 17 do not necessarily agree with the schedule described
here. Special samples might be collected at any time at a specific request.
Analysis of samples collected this year might not be complete as of this writing.
Table 17. Concentrations of chemicals in water samples
collected from the Alpena City water system during routine or investigative
sampling by the MDPH and MDEQ, March 1995-December 1999.
Chemical | Date | Range of Concentrations (ppb) |
MCL (Ref. 11) (ppb) |
|
Plant Tap | Public Distribution | |||
chlorodibromomethane | 3/22/95 | 1.3 | NS | |
6/15/95 | 0.8 | trace | ||
8/31/95 | NS | ND | ||
12/15/95 | NS | ND | ||
1/12/96 | 2 | NS | ||
5/30/96 | 0.4 | NS | ||
6/13/96 | NS | trace | ||
9/4/96 | ND | NS | ||
3/20/97 | 0.6 | NS | ||
4/23/97 | trace | NS | ||
6/13/97 | 1.5 | 0.6 | ||
6/16/98 | NS | 1.3 | ||
7/29/98 | 1.4 | NS | ||
2/8/99 | NS | trace | ||
2/23/99 | NS | 0.4-0.5 | ||
5/25/99 | NS | 0.6 | ||
6/15/99 | trace | NS | ||
8/23/99 | NS | 0.9-1.4 | ||
11/22/99 | NS | 0.6-0.9 | ||
12/20/99 | 0.4 | 0.4 | ||
chloroform | 3/22/95 | 109 | NS | |
6/15/95 | 15.8 | 19 | ||
8/31/95 | NS | 44.9 | ||
12/15/95 | NS | 7.7 | ||
1/12/96 | 60.6 | NS | ||
5/30/96 | 43.9 | NS | ||
6/13/96 | NS | 40.7 | ||
9/4/96 | 3.5 | NS | ||
3/20/97 | NS | 26.4 | ||
4/23/97 | 13.9 | NS | ||
6/13/97 | 68.6 | 23.3 | ||
6/16/98 | NS | 23.1 | ||
7/29/98 | 15.9 | NS | ||
2/8/99 | NS | 14.5 | ||
2/23/99 | NS | 10.7-14.6 | ||
5/25/99 | NS | 2.2-3 | ||
6/15/99 | 2.1 | NS | ||
8/23/99 | NS | 15.1-19.1 | ||
11/22/99 | NS | 6.8-8.1 | ||
12/20/99 | 8.2 | 9.2 | ||
dichlorobromomethane | 3/22/95 | 11.6 | NS | |
6/15/95 | 5.4 | 2.6 | ||
8/31/95 | NS | 4 | ||
12/15/95 | NS | 1.8 | ||
1/12/96 | 9.6 | NS | ||
5/30/96 | 5.4 | NS | ||
6/13/96 | NS | 4.8 | ||
9/4/96 | 0.5 | NS | ||
3/20/97 | NS | 5 | ||
4/23/97 | 3 | NS | ||
6/13/97 | 10.4 | 4.3 | ||
6/16/98 | NS | 7.3 | ||
7/29/98 | 6.7 | NS | ||
2/8/99 | NS | 3.1 | ||
2/23/99 | NS | 3.2-4 | ||
5/25/99 | NS | 0.6-1.1 | ||
6/15/99 | 0.5 | NS | ||
8/23/99 | NS | 3.7-4.6 | ||
11/22/99 | NS | 2.6-3 | ||
12/20/99 | 2.5 | 2.6 | ||
Total trihalomethanes | 3/22/95 | 122 | NS | 100 |
6/15/95 | 22 | 21.6 | ||
8/31/95 | NS | 48.9 | ||
12/15/95 | NS | 9.5 | ||
1/12/96 | 72.2 | NS | ||
5/30/96 | 49.7 | NS | ||
6/13/96 | NS | 45.5 | ||
9/4/96 | 4 | NS | ||
3/20/97 | NS | 32 | ||
4/23/97 | 16.9 | NS | ||
6/13/97 | 80.5 | 28.2 | ||
6/16/98 | NS | 31.7 | ||
7/29/98 | 24 | NS | ||
2/8/99 | NS | 17.6 | ||
2/23/99 | NS | 14.3-19.1 | ||
5/25/99 | NS | 3.7-4.7 | ||
6/15/99 | 2.6 | NS | ||
8/23/99 | NS | 19.7-24.6 | ||
11/22/99 | NS | 10-12 | ||
12/20/99 | 11.1 | 12.2 | ||
arsenic | 6/15/95 | 1.2 | NS | 50 |
11/02/95 | ND | NS | ||
5/30/96 | ND | NS | ||
6/15/99 | ND | NS | ||
barium | 6/15/95 | ND | NS | 2,000 |
11/02/95 | 30 | NS | ||
5/30/96 | ND | NS | ||
6/15/99 | ND | NS | ||
chromium | 6/15/95 | ND | NS | 100 |
11/02/95 | ND | NS | ||
5/30/96 | 1 | NS | ||
6/15/99 | ND | NS | ||
sodium | 6/15/95 | ND | NS | 160,000A |
5/30/96 | 6,000 | NS | ||
7/29/98 | 5,000 | NS | ||
6/15/99 | 5,000 | NS | ||
bis(2-ethylhexyl)phthalate | 12/15/95 | 0.7 | NS | 6 |
dibromoacetic acid | 2/23/99 | NS | ND | 60B |
5/25/99 | NS | trace | ||
8/31/99 | NS | ND | ||
11/22/99 | NS | ND | ||
dichloroacetic acid | 2/23/99 | NS | 3-5 | 60B |
5/25/99 | NS | ND | ||
8/31/99 | NS | trace | ||
11/22/99 | NS | trace | ||
trichloroacetic acid | 2/23/99 | NS | 6-8 | 60B |
5/25/99 | NS | trace | ||
8/31/99 | NS | 3 | ||
11/22/99 | NS | 3-5 | ||
gross alpha radiation (pCi/L) | 10/26/98 | 1 | NS | 15 |
Reference: 25
Shaded chemicals exceeded ATSDR Comparison Values
ND -- Not Detected
NS -- Not Sampled
trace -- Detected, but the concentration was not quantifiable
Table 18. Concentrations of metals in sediment samples collected from Thunder
Bay off the cement kiln dust pile behind the Lafarge Corporation Alpena Plant
during the IRIA, September-October 1997.
Chemical | Concentration (ppm) |
No. of samples above MDEQ Industrial/Commercial Criteria (Ref. 13) | No. of samples above MDEQ Residential Criteria (Ref. 13) | Comparison Value (ppm) |
|
Maximum | Median | ||||
arsenic | 53 | 4 | 0 | 15 | 0.6E, 0.47C |
barium | 170 | 29 | 0 | 0 | 140R |
beryllium | 2.2 | 0.21 | 0 | 0 | 10R, 0.16C |
bismuth | 2.1 | ND | 0 | 0 | NA |
chromium | 34 | 5.3 | 0 | 0 | 6R, carcinogen (VI) |
copper | 40 | 5.6 | 0 | 0 | NA |
lead | 150 | 11 | 0 | 0 | carcinogen |
manganese | 480 | 200 | 0 | 0 | NA |
mercury | 0.23 | ND | 0 | 0 | NA |
nickel | 49 | 12 | 0 | 0 | 40R, carcinogen |
selenium | 7.9 | ND | 0 | 0 | 10E |
silver | 2.5 | ND | 0 | 0 | 10R |
thallium | 9.7 | 0.5 | 0 | 0 | NA |
Reference: 3
Shaded chemicals exceeded ATSDR Comparison Values
ND -- Not Detected - for medians, in more than ½ of the samples
(VI) -- For chromium(VI)
NA -- None Available
carcinogen -- Carcinogen (proven, probable, or possible) but no CREG available
Comparison Value Bases:
E -- ATSDR Environmental Media Evaluation Guides (EMEGs),
chronic exposure
R -- ATSDR Reference Dose Media Evaluation Guides (RMEGs), calculated from U.S.
EPA Reference Dose
C -- ATSDR Cancer Risk Evaluation Guides (CREGs)
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