PUBLIC HEALTH ASSESSMENT
JOSLYN MANUFACTURING AND SUPPLY COMPANY
BROOKLYN CENTER, HENNEPIN COUNTY, MINNESOTA
Appendix A - Tables 1 through 7. Environmental Sampling Results.
Appendix B - Tables 8 through 10. Media-Specific Comparison Values.
Appendix C - Summary of Public Comment Period.
APPENDIX A: TABLES 1 THROUGH 7. ENVIRONMENTAL SAMPLING RESULTS
TABLE 1. PAH COMPOUNDS TESTED FOR DURING REMEDIATION AND
MONITORING ACTIVITIES
APRIL 1984 - DECEMBER 1991
|
cPAH COMPOUNDS*
|
|
|
Benzo[a]anthracene
|
Benzo[b]fluoranthene***
|
|
Benzo[a]pyrene
|
Benzo[ghi]perylene
|
|
Chrysene***
|
Dibenzo[ah]anthracene
|
|
Indeno[1,2,3,cd]pyrene
|
Quinoline
|
|
nPAH COMPOUNDS*
|
|
|
Acenaphthene
|
Acenaphthylene
|
|
Acridine
|
Anthracene
|
|
Benzo[k]fluoranthene***
|
2,3-Benzofuran
|
|
Benzo[e]pyrene
|
Benzo[b]thiophene
|
|
Biphenyl
|
Carbazole
|
|
Dibenzothiophene
|
Dibenzofuran
|
|
2,3-Dihydroindene
|
7,12-Dimethylbenz[a]anthracene
|
|
Fluoranthene
|
Fluorene
|
|
Indene
|
Indole
|
|
Isoquinoline
|
3-Methylcholanthrene
|
|
1-Methylnaphthalene
|
2-Methylnaphthalene
|
|
Naphthalene
|
Perylene
|
|
Phenanthrene
|
Phenanthridine
|
|
Pyrene
|
Triphenylene***
|
Notes:
*Classification of PAHs as probable or possible human carcinogens or noncarcinogens as used for the Remedial Investigation/Alternatives Report. Some PAHs classified as noncarcinogens in the RI report are classified as carcinogenic by EPA and NTP.
***These compounds coelute, are structural isomers (benzo[b]fluoranthene with benzo[k]fluoranthene and chrysene with triphenylene) and, therefore, cannot be individually quantified. In the RI, benzo[k]fluoranthene as nPAH, and chrysene as cPAH; these are different classifications than used by MDH.
TABLE 2. ON-SITE MAXIMUM CONTAMINANT LEVELS SOIL
APRIL 1984 - OCTOBER 1988
These values do not reflect current concentrations in place
| CONTAMINANT | LOCATION | TEST DATE | CONCENTRATION |
| Total cPAHs | Area 6 | 12-84 | 850 mg/kg |
| Total nPAHs | Area 6 | 12-84 | 7,400 mg/kg |
| PCP | Area 4 | 12-84 | 3,200 mg/kg |
| TCDD | Composite | 12-87 | ND |
| TCDF | Composite | 12-87 | 0.45 g/kg |
| Total PCDD, HxCDD, and HpCDD | Composite | 12-87 | 1,695 g/kg |
| Total PCDF, HxCDF, and HpCDF | Composite | 12-87 | 1,496 g/kg |
Notes:
cPAHS - As classified in the Remedial Investigation (Table 1)
PCDD - pentachlorodibenzo-p-dioxin,
HxCDD - hexachlorodibenzo-p-dioxin,
HpCDD - heptachlorodibenzo-p-dioxin,
PCDF - pentachlorodibenzofuran,
HxCDF - hexachlorodibenzofuran,
HpCDF - heptachlorodibenzofuran,
TCDD - tetrachlorodibenzo-p-dioxin,
TCDF - tetrachlorodibenzofuran,
ND - not detected.
TABLE 3. ON-SITE MAXIMUM CONTAMINANT LEVELS OF PRESENTLY
IN-PLACE (UNEXCAVATED) SOIL
SPRING 1992
| LOCATION AND SAMPLE TYPE/DEPTH | DATE | CONTAMINANT | CONCENTRATION |
| Control Bldg | 10-91 | Total cPAHs | 610 mg/kg |
| East Boring | Total nPAHs | 22,000 mg/kg | |
| Composite (7-19') |
PCP | <370 mg/kg | |
| North Side | 10-91 | Total cPAHs | 450 mg/kg |
| Drain Line Area | Total nPAHs | 1,900 mg/kg | |
| Borings | PCP | 110 mg/kg | |
| Composites (2-11.5') (4.5-11.5') |
|||
| South Side | 7-91 | Total cPAHs | 19 mg/kg |
| Water Main Area | Total nPAHs | 180 mg/kg | |
| Excavation | PCP | 56 mg/kg | |
| Grab Sample | |||
Notes:
cPAHS - As classified in the Remedial Investigation (Table 1)
TABLE 4. ON-SITE REPORTED MAXIMUM CONTAMINANT LEVELS
GROUNDWATER AND DNAPL/LNAPL OILS
1984 - 1990
| MEDIA | CONTAMINANT | LOCATION | TEST DATE | CONCENTRATION |
| SURFICIAL | Total cPAHs | W113 | 5-85 | 6,200 µg/L |
| AQUIFER | Total nPAHs | W113 | 5-85 | 120,100 µg/L |
| PCP | W6 | 10-88 | 25,000 µg/L | |
| Total Furans | U2 | 8-90 | 0.024 ng/L* | |
| tetra- | 0.007 ng/L* | |||
| octa- | 0.017 ng/L* | |||
| Total Dioxins | U2 | 8-90 | 0.34 ng/L* | |
| tetra- | 0.015 ng/L* | |||
| hepta- | 0.024 ng/L* | |||
| octa- | 0.3 ng/L* | |||
| LNAPL OIL | Total cPAHs | W113 | 12-87 | <1,000 µg/L |
| Total nPAHs | W113 | 12-87 | 7,500 µg/L | |
| PCP | W113 | 12-87 | 3,000 µg/L | |
| Total Furans | W113 | 12-87 | 1.8 µg/L | |
| Total Dioxins | W113 | 12-87 | 4.0 µg/L | |
| DNAPL OIL | Total cPAHs | W251 | 12-87 | <10,000 µg/L |
| Total nPAHs | W251 | 12-87 | 183,000,000 µg/L | |
| PCP | W251 | 12-87 | 170,000 µg/L | |
| Total Furans | W251 | 12-87 | 371 µg/L | |
| Total Dioxins | W251 | 12-87 | 3,815 µg/L | |
| LOWER AQUIFER | Total cPAHs | W307 | 7-87 | 0.041 µg/L |
| Total nPAHs | W307 | 3-87 | 4.4 µg/L | |
| PCP | W307 | 7-87 | 21s µg/L | |
| Total Furans | NT | |||
| Total Dioxins | NT | |||
Notes:
cPAHS - As classified in the Remedial Investigation
* - ng/L- Units for dioxins and furans are given in nanograms per liter.
s - Potential false-positive value based upon statistical analysis of blank
samples
NT - Not tested.
TABLE 5. OFF-SITE MAXIMUM CONTAMINANT LEVELS FOUND IN GROUNDWATER
1984 - 1991
| MEDIA | CONTAMINANT | LOCATION | DATE | CONCENTRATION |
| SHALLOW WELLS | Total cPAHs | W126 | 10-91 | 0.23 µg/L |
| Total nPAHs | W122 | 11-87 | 64 µg/L | |
| PCP | W122 | 7-87 | 950 µg/L | |
| Total Furans | W125 | 8-90 | 0.11 ng/L* | |
| tetra- | W122 | 8-90 | 0.019 ng/L* | |
| hexa- | W125 | 8-90 | 0.028 ng/L* | |
| octa- | W125 | 8-90 | 0.081 ng/L* | |
| Total Dioxins | W125 | 8-90 | 0.92 ng/L* | |
| penta- | W125 | 8-90 | 0.0046 ng/L* | |
| hexa- | W125 | 8-90 | 0.022 ng/L* | |
| hepta- | W125 | 8-90 | 0.14 ng/L* | |
| octa- | W125 | 8-90 | 0.76 ng/L* | |
| MID DEPTH WELLS | Total cPAHs | W223 | -- | ND |
| Total nPAHs | W223 | 10-88 | 250 µg/L | |
| PCP | W223 | 2-88 | 640 µg/L | |
| LOWER AQUIFER | Total cPAHs | W328 | 2-88 | 0.002 µg/L |
| Total nPAHs | W323 | 7-87 | 11 µg/L | |
| PCP | W328 | 8-87 | 8.5s µg/L | |
Notes:
cPAHS - As classified in the Remedial Investigation
ND - not detected.
s - Potential false positive value based on statistical analysis of blank sample
data.
* - ng/L - Units for dioxins and furans are given in nanograms per liter.
TABLE 6. ON-SITE AIR SAMPLING MAXIMUM RESULTS
DUSTS AND CHEMICALS 1990 - 1991
| SAMPLE TYPE | LOCATION | DATE | MAXIMUM RESULT |
| Ambient air (Real-time) | Site Perimeter | 1990 | 0.79 mg/m3 |
| Personnel | Work areas | 1990 | 40 mg/m3 |
| Ambient air (TSP) | West end of site | 1990 | 0.11 mg/m3 |
| Ambient air (TSP) | South center of site | 1990 | 0.13 mg/m3 |
| Personnel | Work areas | 1991 | 0.2 mg/m3 |
| Ambient air (TSP) | Middle of LTU | 1991 | 0.58 mg/m3 |
| Ambient air (TSP) | South center of site | 1991 | 141 mg/m3 |
| Personnel (hydrocarbon badges) | Work areas | 1990 | <8 mg/m3 |
| Ambient air (PCP) | Excavation area | 1991 | 2.6 mg/m3 |
| Photoionization detector (VOCs) | Around LTU | 1990 | 8 mg/m3 |
| Photoionization detector (hydrocarbons) | Around LTU | 1991 | 37 mg/m3 |
| Naphthalene and phenol | Within control building | 1991 | <0.01 ppm |
Notes: ppm - concentrations for napthalene and phenol are reported in units of parts per million in air
TABLE 7. OFF-SITE MAXIMUM CONTAMINANT LEVELS SURFACE WATER
HIGHWAY 100 DRAIN-TILE SEWER SYTEM
1987 - 1991
| LOCATION | CONTAMINANT | DATE | CONCENTRATION |
| DRAIN TILE |
Total cPAHs Total nPAHs PCP |
12-91 10-90 11-87 |
0.74 µg/L 46 µg/L 570 µg/L |
| STORM SEWER OUTLET |
Total cPAHs Total nPAHs PCP |
12-91 8-91 --- |
25 µg/L 10 µg/L ND µg/L* |
| SHINGLE CREEK (background) |
Total cPAHs Total nPAHs PCP |
8-91 12-91 8-87 |
2.3 µg/L 4.4 µg/L ND µg/L* |
Notes:
cPAHS - As classified in the Remedial Investigation
ND - not detected.
* - PCP not sampled in storm sewer outlet or Shingle Creek before 11-91.
APPENDIX B: TABLES 8 THROUGH 10. MEDIA-SPECIFIC COMPARISON VALUES
Table 8. Soil Comparison Values
| Contaminant | Comparison Values |
| Carcinogenic PAHs | NE |
| Noncarcinogenic PAHs | NE |
| PCP | 5.8a mg/kg |
| Dioxins HxCDD mixture |
0.11 g/kga |
| 2,3,7,8-TCDD | 0.002 g/kgb pica child 0.005 g/kgb child 0.7 g/kgb adult |
| Furans | NE |
Notes:
HxCDD - hexachlorodibenzo-p-dioxin
TCDD - tetrachlorodibenzo-p-dioxin
mg/kg - Units for PCP comparison value are in milligrams per kilogram or parts
per million.
g/kg - Units for dioxin comparison values are in micrograms per kilogram or
parts per billion.
a - CREG
b - Chronic EMEG range
NE - No comparison value established
Table 9. Groundwater Comparison Values
| Contaminant | Comparison Values |
| Carcinogenic PAHs | 0.03a µg/L |
| Noncarcinogenic PAHs | 0.3a µg/L |
| PCP | 200.0a µg/L 3.0b µg/L |
| Dioxins TCDD HxCDD |
0.00001c µg/L 0.0000056d µg/L |
| Furans | NE |
Notes:
a - RAL
b - proposed RAL
c - Chronic EMEG (child)
d - CREG
NE - No comparison value established
HxCDD - hexachlorodibenzo-p-dioxin
TCDD - tetrachlorodibenzo-p-dioxin
Table 10. Surface Water Comparison Values
| Contaminant | Comparison Values |
| Total Carcinogenic PAHs | 0.07a µg/L |
| Total Noncarcinogenic PAHs | 17a µg/L * |
| Individual nPAHs Acenaphthene Anthracene Fluoranthene Phenanthrene Naphthalene |
12a µg/L 0.029 a µg/L 1.1a µg/L 2.1a µg/L 81a µg/L (proposed) |
| PCP | 5.7a µg/L |
Notes:
a - Aquatic Life Criteria. Surface Water Quality Standards developed by MPCA
(Minnesota Rules Chapter 7050).
* - The total nPAHs Aquatic Life Criteria Standard was replaced by the values
for individual nPAH compounds listed above.
APPENDIX C: SUMMARY OF THE PUBLIC COMMENT PERIOD FOR THE JOSLYN MANUFACTURING AND SUPPLY COMPANY SITE PUBLIC HEALTH ASSESSMENT
The Minnesota Department of Health obtained mailing lists of concerned citizens and state and local government officials from the Minnesota Pollution Control Agency Office of Public Information. A copy of the draft Public Health Assessment for the Joslyn Manufacturing and Supply Company Site was mailed to interested parties. A letter of announcement was also sent to interested parties to allow them to request a copy of the draft Public Health Assessment for review and comment. The MDH also issued a press release to local news agencies that summarized the major findings of the draft assessment and provided information on how copies could be obtained from MDH.
No comments to the document were received during the public comment period.
