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PUBLIC HEALTH ASSESSMENT

JOSLYN MANUFACTURING AND SUPPLY COMPANY
BROOKLYN CENTER, HENNEPIN COUNTY, MINNESOTA


APPENDICES

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.


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