Skip directly to search Skip directly to A to Z list Skip directly to site content
PUBLIC HEALTH ASSESSMENT NORTH BRONSON INDUSTRIAL AREA
BRONSON, BRANCH COUNTY, MICHIGAN


APPENDIX A.

FIGURES


Figure 1. Site Location


Figure 2. Site Features



APPENDIX B.

TABLES

 

Table 1. Contaminants of concern at the North Bronson Industrial Area site.
   
Table 2. Chronology of sampling of residential wells near the North Bronson Industrial Area site, 1974-1995.
   
Table 3. Cross-reference table for private well identification between this assessment and the remedial investigation (RI) report (Reference).
   
Table 4. Concentrations of contaminants of concern found in water from residential and municipal wells within the North Bronson Industrial Area site study area.
   
Table 5. Concentrations of contaminants of concern in water from monitoring wells on the North Bronson Industrial Area site study area.
   
Table 6. Concentrations of contaminants of concern in surface soil samples collected from the North Bronson Industrial Area site study area in 1991.
   
Table 7. Concentrations of contaminants of concern in lagoon berm subsurface soil samples collected from the North Bronson Industrial Area site study area in 1989.
   
Table 8. Concentrations of contaminants of concern in subsurface soil samples collected from the North Bronson Industrial Area site study area.
   
Table 9. Concentrations of contaminants of concern in surface water from the western lagoons on the North Bronson Industrial Area site.
   
Table 10. Concentrations of contaminants of concern in sludge samples collected from the lagoons on the North Bronson Industrial Area site.
   
Table 11. Concentrations of contaminants of concern found in water from residential wells near the North Bronson Industrial Area site study area.
   
Table 12. Concentrations of contaminants of concern in water from monitoring wells near the North Bronson Industrial Area site.
   
Table 13. Concentrations of contaminants of concern in surface soil samples collected near the North Bronson Industrial Area site in 1991.
   
Table 14. Concentrations of contaminants of concern (metals only) in subsurface soil samples collected from monitoring well borings near the North Bronson Industrial Area site in 1991.
   
Table 15. Concentrations of contaminants of concern in sediment from County Drain # 30 at and near the North Bronson Industrial Area site.
   
Table 16. Concentrations of contaminants of concern in surface water from County Drain # 30 near the North Bronson Industrial Area site and from outfalls to the creek from the site.


Table 1. Contaminants of concern at the North Bronson Industrial Area site.

VOLATILE ORGANIC COMPOUNDS

OTHER SEMI-VOLATILE ORGANIC
COMPOUNDS

   
acetone
benzene
chlorobenzene
chloroform
1,1-dichloroethane
1,1-dichloroethylene
1,2-dichloroethylene
ethyl benzene
methyl ethyl ketone
methylene chloride
1,1,1-trichloroethane
trichloroethylene
vinyl chloride
xylenes
benzyl alcohol
bis(2-ethylhexyl)phthalate
butylbenzylphthalate
carbazole
4-chloro-3-methylphenol
dibenzofuran
1,4-dichlorobenzene
dimethyl phthalate
di-n-octylphthalate
4-methylphenol
4-nitrophenol
   

POLYCYCLIC AROMATIC HYDROCARBONS

METALS AND INORGANIC CHEMICALS

   
acenaphthylene
benzo(a)anthracene
benzo(b)fluoranthene
benzo(k)fluoranthene
benzo(g,h,i)perylene
benzo(a)pyrene
chrysene
dibenzo(a,h)anthracene
indeno(1,2,3-cd)pyrene
2-methylnaphthalene
naphthalene
phenanthrene
antimony
arsenic
barium
beryllium
cadmium
chromium
cobalt
copper
cyanide
lead
manganese
mercury
nickel
thallium
vanadium
zinc
   

PESTICIDES AND POLYCHLORINATED BIPHENYLS (PCBs)

 
   
gamma-BHC
delta-BHC
heptachlor epoxide
PCBs
 


Table 2. Chronology of sampling of residential wells near the North Bronson Industrial Area site, 1974-1995.

Well # 1974 19841 9/88 (RI)2 12/883 1/894 9/89 (RI)2 7/933 10/933 7/953 8/955
RW-1 X Well Replaced +  
RW-2   + +   + + X X Well Replaced
RW-3       X Well Replaced
RW-4             X X Well Replaced
RW-5   + +     +     +  
RW-6   + +     +       +
RW-7   + +     +       +
RW-8     +   + + +   +  
RW-9         +   +   +  
RW-10         +   +   +  
RW-11         +       +  
RW-12         +          
RW-13             +   +  
RW-14             +   +  
RW-15             +   +  
RW-16             +      
RW-17             +      
RW-18                 +  
RW-19                 +  
RW-20                 +  
RW-21                 +  
RW-22                 +  
RW-23                 +  
RW-24                   +
RW-25                   +
RW-26                   +
RW-27                   +
RW-28                   +
RW-29                   +
References: 1, 6, 7, 8 See Figure 2 for well locations. + -- Well sampled, no volatile organic compound (VOC) contamination found X -- Well sampled, VOC contamination found

Analysis Performed 1. VOCs, metals, cyanide, bacteria 2. VOCs, semi-VOCs, polychlorinated biphenyls/pesticides, inorganic chemicals 3. VOCs 4. VOCs, general chemistry 5. VOCs, metals, cyanide


Table 3. Cross-reference table for private well identification between this assessment and the remedial investigation (RI) report (Reference 1).

Well # RI Round 1 RI Round 2
RW-02 PW2 PW5
RW-05 PW1 PW2
RW-06 PW5 PW6
RW-07 PW4 PW3
RW-08 PW7 PW4
City well PW-3 PW3 PW1

"[The RI contractor's] sample designations for private wells are different between Rounds 1 and2 because samplers collecting Round 2 samples were unaware of Round 1 designations." (Reference 1, p. 2-4)

Table 4. Concentrations of contaminants of concern found in water from residential and municipal wells within the North Bronson Industrial Area site study area.

Chemical Date Maximum Concentration
(ppb)
Reference Comparison Value
(ppb)
acetone 1974

ca 5,000

1 1,000R
10/84 ND 6
9/88 ND 1
9/89 ND 1
12/88 ND 7
1993 ND 7
arsenic 10/84 ND 6 3E, 0.02C
9/88

3.6

1
9/89

6.1

1
beryllium 10/84 ND 6 50R, 0.008C
9/88 ND 1
9/89

3.3

1
1,1-dichloroethylene 1974 ND 1 90E, 0.06C
10/84 ND 6
9/88 ND 1
9/89 ND 1
12/88

2

7
1993 ND 7
cis-1,2-dichloroethylene 1974 ND 1 70A
10/84 ND 6
9/88 ND 1
9/89 ND 1
12/88

24

7
1993 ND 7
trans-1,2-dichloroethylene 1974 ND 1 100A
10/84 ND 6
9/88 ND 1
9/89 ND 1
12/88

1

7
1993 ND 7
manganese 10/84 ND 6 50R
9/88

97

1
9/89

123

1
methyl ethyl ketone 1974

ca 5,000

1 6,000R
10/84 ND 6
9/88 ND 1
9/89 ND 1
12/88 ND 7
1993 ND 7
1,1,1-trichloroethane 1974 ND 1 200A
10/84 ND 6
9/88 ND 1
9/89 ND 1
12/88 ND 7
1993

0.07

7
trichloroethylene 1974 ND 1 3C
10/84 ND 6
9/88 ND 1
9/89 ND 1
12/88

457

7
1993

82

7
vinyl chloride 1974 ND 1 0.2E, carcinogen
10/84 ND 6
9/88 ND 1
9/89 ND 1
12/88

6

7
1993 ND 7
zinc 10/84 ND 6 3,000R
9/88

433

1
9/89

40

1

Shaded chemicals exceed comparison values Contaminants of concern that are not listed were not detected ND -- Not Detected Comparison Value Bases:

E -- ATSDR Environmental Media Evaluation Guides (EMEGs)
R -- ATSDR Reference Dose Media Evaluation Guides (RMEGs), calculated from EPA Reference Dose, assuming child ingestion
C -- ATSDR Cancer Risk Evaluation Guides (CREGs), for 1 x 10-6 estimated excess cancer risk (a significant additional risk of developing cancer is taken to be one additional case of cancer in a population of 1 million people experiencing the exposure)


Table 5. Concentrations of contaminants of concern in water from monitoring wells on the North Bronson Industrial Area site study area.

Chemical Date Maximum Concentration
(ppb)
Reference Comparison Value
(ppb)
acetone 1974 ca 1,000 1 1,000R
1988 ND (10) 1
1989 ND (10) 1
1991 ND (10) 1
arsenic 1988 9.9 1 3E, 0.02C
1989 9.2 1
1991 12.1 1
benzene 1988 ND (10) 1 1C
1989 1.J 1
1991 ND (10) 1
bis(2-ethylhexyl)phthalate 1988 3.J 1 200R, 3C
1989 18.J 1
1991 -- 1
cadmium 1988 120 1 7E, carcinogen
1989 301 1
1991 58 1

chromium (total)

           
              

1979 430 3 10,000R (III)
50R, 3C (VI)
1988 32 1
1989 41.9 1
1991 ND (10) 1
(hexavalent) 1988 ND (10) 1
1989 ND (10) 1
1991 ND (10) 1
cobalt 1988 15.9 1 NA
1989 ND (3) 1
1991 ND (3) 1
copper 1979 110 3 1,300MG
1988 18.9J 1
1989 ND (6) 1
1991 19.1 1
cyanide 1988 28 1 200R
1989 2,960 1
1991 531 1
1,1-dichloroethane 1988 72 1 carcinogen
1989 ND (10) 1
1991 4.J 1
1,1-dichloroethylene 1988 ND (10) 1 90E, 0.06C
1989 3 1
1991 ND (10) 1
1,2-dichloroethylene (total) 1988 270 1 70A (cis)
100A (trans)
1989 1,600 1
1991 35,000 1
lead 1979 43 3 15PL, carcinogen
1988 24 1
1989 7.8 1
1991 1.2 1
manganese 1988 498 1 50R
1989 912 1
1991 442 1
mercury 1988 ND (0.2) 1 2A
1989 ND (0.2) 1
1991 2.3 1
methylene chloride 1988 ND (10) 1 600E, 5C
1989 ND (10) 1
1991 3.J 1
methyl ethyl ketone 1974 ca 1,000 1 6,000R
1988 ND (10) 1
1989 ND (10) 1
1991 ND (10) 1
nickel 1979 1,100 3 200R, carcinogen
1988 576 1
1989 479 1
1991 247 1
1,1,1-trichloroethane 1988 3,600 1 200A
1989 ND (10) 1
1991 14.J 1
trichloroethylene 1979 190 3 3C
1988 320 1
1989 700 1
1991 30,000 1
vinyl chloride 1988 100 1 0.2E, carcinogen
1989 5 1
1991 5,200 1
zinc 1979 20,000 3 3,000R
1988 8,800 1
1989 999 1
1991 26.5 1

Shaded chemicals exceed comparison values Contaminants of concern that are not listed were not detected ND -- Not Detected (with Detection Level)
J -- Estimated Value
(III) -- For chromium(III)
(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 EPA Reference Dose, assuming child ingestion
C -- ATSDR Cancer Risk Evaluation Guides (CREGs), for 1 x 10-6 estimated excess cancer risk (a significant additional risk of developing cancer is taken to be one additional case of cancer in a population of 1 million people experiencing the exposure)
A -- U.S. EPA Drinking Water Lifetime Health Advisory
PL -- U.S. EPA Proposed Action Level for Lead in Drinking Water


Table 6. Concentrations of contaminants of concern in surface soil samples collected from the North Bronson Industrial Area site study area in 1991.

Chemical Maximum Concentration
(ppm)
Comparison Value
(ppm)
ball field L.A. Darling Scott Fetzer Cyanide Destr.
acetone ND (0.015) 0.03J ND (0.011) ND (0.011) 200R
antimony ND (4.1) 4.6J ND (3.9) ND (4.6) 0.8R
arsenic 4.8 10.7 5.7 30.4 0.6E, 0.5C
barium 43.6 252 41 447 100R
beryllium 0.26J 1.6 3.6 2.4 10R, 0.2C
cadmium 0.79J 76.3 ND (0.65) 1.8 1E, carcinogen
chromium (total) 13.5 102 7.3 25.3 2,000R (III)
10R, 60C (VI)
cobalt 3.2 21 2.2 7.7 NA
copper 30.6 399 64.8 114 NA
cyanide ND (0.33) 3.5 ND (0.16) 0.28 40R
lead 25.6 193 42.7 279 carcinogen
manganese 194 517.J 237 705 300R
mercury ND (0.06) 0.14 0.12 0.14 NA
nickel 8 273 5.4 20.7 40R, carcinogen
thallium ND (0.23) 0.58 0.28 0.56 NA
trichloroethylene ND (0.011) 0.004J ND (0.011) 0.007J 4Ei, 60C
vanadium 22.7 27.5 10.4 30.7 6Ei
zinc 50.5 456 83.8 418 600R
Reference: 1 Shaded chemicals exceed comparison values Contaminants of concern that are not listed were not detected ND -- Not Detected (with Detection Level)
J -- Estimated Value
NA -- None Available (III) -- For chromium(III)
(VI) -- For chromium(VI) carcinogen -- Carcinogen (proven, probable, or possible) but no CREG available Comparison Value Bases:

E -- ATSDR Environmental Media Evaluation Guides (EMEGs)
Ei -- ATSDR Environmental Media Evaluation Guides (EMEGs), intermediate-duration exposure
R -- ATSDR Reference Dose Media Evaluation Guides (RMEGs), calculated from U.S. EPA Reference Dose, assuming child ingestion
C -- ATSDR Cancer Risk Evaluation Guides (CREGs), for 1 x 10-6 estimated excess cancer risk (a significant additional risk of developing cancer is taken to be one additional case of cancer in a population of 1 million people experiencing the exposure)


Table 7. Concentrations of contaminants of concern in lagoon berm subsurface soil samples collected from the North Bronson Industrial Area site study area in 1989.

Chemical Maximum Concentration
(ppm)
Comparison Value
(ppm)
east west
acetone 0.031J ND (0.011) 200R
antimony 42 60 0.8R
arsenic 15.J 28.J 0.6E, 0.5C
barium 67 54 100R
benzene 0.003 0.006 20C
cadmium 1,900.J 1,450.J 1E, carcinogen
chromium (total) 1,930.J 2,870.J 2,000R (III)
10R, 60C (VI)
cobalt 5.7 16 NA
copper 437 1,380 NA
cyanide 43 58 40R
lead 30 106 carcinogen
manganese 310.J 240.J 300R
nickel 1,700.J 2,340.J 40R, carcinogen
PCBs 0.48 ND (0.36) 0.04E, 0.09C
phenanthrene 0.13J ND (0.74) NA
vanadium 18 12 6Ei
zinc 1,010.J 903.J 600R
Reference: 1 Shaded chemicals exceed comparison values Contaminants of concern that are not listed were not detected ND -- Not Detected
J -- Estimated Value NA -- None Available (III) -- For chromium(III)
(VI) -- For chromium(VI) carcinogen -- Carcinogen (proven, probable, or possible) but no CREG available Comparison Value Bases:

E -- ATSDR Environmental Media Evaluation Guides (EMEGs)
Ei -- ATSDR Environmental Media Evaluation Guides (EMEGs), intermediate-duration exposure
R -- ATSDR Reference Dose Media Evaluation Guides (RMEGs), calculated from EPA Reference Dose, assuming child ingestion
C -- ATSDR Cancer Risk Evaluation Guides (CREGs), for 1 x 10-6 estimated excess cancer risk (a significant additional risk of developing cancer is taken to be one additional case of cancer in a population of 1 million people experiencing the exposure)


Table 8. Concentrations of contaminants of concern in subsurface soil samples collected from the North Bronson Industrial Area site study area.

Chemical Date Maximum Concentration
(ppm)
Comparison Value
(ppm)
acenaphthylene 1989 0.37J NA
1991 12.J
acetone 1989 0.011J 200R
1991 ND (0.18)
antimony 1989 ND (7.1) 0.8R
1991 19.8J
arsenic 1989 95.9 0.6E, 0.5C
1991 16.5
barium 1989 594 100R
1991 70.7
benzene 1989 ND (0.008) 20C
1991 0.001J
benzo(a)anthracene 1989 1.7 carcinogen
1991 17.J
benzo(b)fluoranthene 1989 3 carcinogen
1991 290.X
benzo(k)fluoranthene 1989 ND (1.1) carcinogen
1991 290.X
benzo(g,h,i)perylene 1989 1.8 NA
1991 37.J
benzo(a)pyrene 1989 0.91 0.1C
1991 35.J
beryllium 1989 157 10R, 0.2C
1991 0.41
gamma-BHC 1989 ND (0.27) 0.08Ei, carcinogen
1991 0.00044J
delta-BHC 1989 ND (0.27) NA
1991 0.0022J
bis(2-ethylhexyl)phthalate 1989 6.2 40R, 50C
1991 0.55J
butylbenzylphthalate 1989 ND (1.1) 400R, carcinogen
1991 0.07J
cadmium 1989 4,900 1E, carcinogen
1991 2,210
chlorobenzene 1989 0.003 40R
1991 ND (0.012)
chloroform 1989 ND (0.01) 20E, 100C
1991 0.078
chromium (total) 1989 14,500 2,000R (III)
10R, 60C (VI)
1991 3,000.
chrysene 1989 2.1 carcinogen
1991 11
cobalt 1989 19.9 NA
1991 9.6
copper 1989 2,110 NA
1991 882
cyanide 1989 171 40R
1991 584
dibenzo(a)anthracene 1989 ND (1.1) carcinogen
1991 15.J
dibenzofuran 1989 0.42J NA
1991 0.067J
1,4-dichlorobenzene 1989 ND (1.1) carcinogen
1991 0.86J
1,2-dichloroethylene (total) 1989 ND (0.008) 40R (trans)
NA (cis)
1991 0.014
dimethyl phthalate 1989 ND (1.1) NA
1991 0.072J
di-n-octylphthalate 1989 ND (1.1) NA
1991 0.081J
ethyl benzene 1989 0.005 200R
1991 ND (0.012)
indeno(1,2,3-c,d)pyrene 1989 1.7J carcinogen
1991 42.J
lead 1989 132 carcinogen
1991 99.6
manganese 1989 5,160 300R
1991 462.J
mercury 1989 ND (0.18) NA
1991 0.42
methyl ethyl ketone 1989 0.025J 1,000R
1991 0.016
methylene chloride 1989 0.09 100R, 90C
1991 ND (0.093)
2-methylnaphthalene 1989 0.4J NA
1991 0.086J
naphthalene 1989 0.11J NA
1991 1.5J
nickel 1989 14,400 40R, carcinogen
1991 2,150
4-nitrophenol 1989 ND (5.2) NA
1991 0.035J
PCBs 1989 0.55J 0.04E, 0.09C
1991 0.21J
phenanthrene 1989 3.8 NA
1991 4.7J
thallium 1989 19.4J NA
1991 0.23J
trichloroethylene 1989 0.083 4Ei, 60C
1991 0.2
vanadium 1989 84.9 6Ei
1991 23
xylenes (total) 1989 0.024 400Ei
1991 ND (0.012)
zinc 1989 2,480 600R
1991 915
Reference: 1 Shaded chemicals exceed comparison values Contaminants of concern that are not listed were not detected ND -- Not Detected (with detection limit)
J -- Estimated Value
X -- Total benzo(b)fluoranthene and benzo(k)fluoranthene NA -- None Available (III) -- For chromium(III)
(VI) -- For chromium(VI) carcinogen -- Carcinogen (proven, probable, or possible) but no CREG available Comparison Value Bases:

E -- ATSDR Environmental Media Evaluation Guides (EMEGs)
Ei -- ATSDR Environmental Media Evaluation Guides (EMEGs), intermediate-duration exposure
R -- ATSDR Reference Dose Media Evaluation Guides (RMEGs), calculated from EPA Reference Dose, assuming child ingestion
C -- ATSDR Cancer Risk Evaluation Guides (CREGs), for 1 x 10-6 estimated excess cancer risk (a significant additional risk of developing cancer is taken to be one additional case of cancer in a population of 1 million people experiencing the exposure)


Next Section          Table of Contents

  
 
USA.gov: The U.S. Government's Official Web PortalDepartment of Health and Human Services
Agency for Toxic Substances and Disease Registry, 4770 Buford Hwy NE, Atlanta, GA 30341
Contact CDC: 800-232-4636 / TTY: 888-232-6348

A-Z Index

  1. A
  2. B
  3. C
  4. D
  5. E
  6. F
  7. G
  8. H
  9. I
  10. J
  11. K
  12. L
  13. M
  14. N
  15. O
  16. P
  17. Q
  18. R
  19. S
  20. T
  21. U
  22. V
  23. W
  24. X
  25. Y
  26. Z
  27. #