PUBLIC HEALTH ASSESSMENT
AMERICAN LINEN (AMERIPRIDE)
(a/k/a AMERIPRIDE SERVICES, INCORPORATED)
HIBBING, ST. LOUIS COUNTY, MINNESOTA
Figure 4. Shallow Groundwater Flow
Figure 5. Intermediate Groundwater Flow
Figure 6. Deep Groundwater Flow
Table 1. PCE Source Area Soil Analytical
Results
Maximum Contaminant Concentrations, mg/kg
Boring | Depth | PCE | TCE | Cis-1,2-DCE | Trans-1,2-DCE |
HAB-2 | 50" | 48 | 0.3 | 0.26 | ND |
HAB-3 | 60" | 2500 | 43 | 9.9 | 0.15 |
HAB-4 | 37" | 8 | 0.2 | 0.2 | ND |
HAB-5 | 27" | 0.7 | ND | ND | ND |
HAB-6 | 42" | 0.6 | 0.16 | 0.15 | ND |
PP-1 | 12" | 60 | 12 | 0.8 | ND |
PP-2 | 90" | 8 | 6.1 | 2 | ND |
PP-3 | 75" | 419 | 24 | 3.5 | ND |
PP-4 | 90" | 1750 | 835 | 193 | 3.3 |
PP-5 | 90" | 1 | 0.8 | 8.4 | 0.3 |
PP-6 | 48" | 0.5 | 0.8 | ND | 0.5 |
PP-7 | 78" | 0.3 | 1.3 | 4.4 | ND |
PP-8 | 90" | ND | 0.8 | 1 | ND |
PP-9 | 98" | 2.1 | 1.6 | 3.3 | ND |
PP-10 | 96" | 9.6 | 13 | 7.6 | ND |
PP-11 | 72" | 99 | 29 | 7.9 | ND |
PP-12 | 72" | 2.2 | 3.5 | ND | 0.6 |
PP-13 | 72" | 3.5 | 2.7 | ND | 0.7 |
PP-14 | 96" | 14 | 2.9 | 0.8 | ND |
PP-15 | 36" | 3.5 | 2.1 | ND | 0.5 |
PP-16 | 10' | 182 | 25 | 38 | 0.4 |
PP-17 | 10' | 170 | 48 | 11 | 0.3 |
PP-18 | 48" | 59 | 2.8 | 0.2 | 0.3 |
PP-19 | 10' | 75 | 16 | 3.7 | ND |
PP-22 | 96" | 47 | 7.8 | 3.7 | ND |
Res. SRV | 92 | 34 | 320 | 130 | |
Ind. SRV | 320 | 55 | 2200 | 425 | |
SLV | 0.07 | 0.14 | 0.14 | 0.22 |
Table 2. Historical Groundwater Analytical
Results
Groundwater Analytical Results (µg/L)
MW-1S
Parameter | HRL | 09/06/96 | 01/06/97 | duplicate 01/06/97 |
12/11/97 | 03/31/98 | 10/22/98 | 02/10/99 | 05/03/99 | 08/10/99 | 03/13/00 | 10/03/00 |
Acetone | 700 | ND | ND | ND | ND | ND | ND | ND | ND | ND | ND | ND |
Benzene | 10 | 2.1 | 0.9 | 0.8 | 11 | 4.2 | 9.5 | 1.1 | 1.2 | ND | ND | ND |
n-Butylbenzene | -- | 2.5 | 2.6 | 2.8 | ND | 1.7 | ND | ND | ND | ND | ND | ND |
sec-Butylbenzene | -- | 2.0 | 1.1 | 1.0 | ND | ND | ND | ND | ND | ND | ND | ND |
tert-Butylbenzene | -- | 1.5 | ND | ND | ND | ND | ND | ND | ND | ND | ND | ND |
Chloroethane | -- | ND | ND | ND | ND | ND | ND | ND | ND | ND | ND | ND |
1,2-Dichloroethane | 4 | ND | ND | ND | ND | ND | ND | ND | ND | ND | ND | ND |
1,1-Dichloroethylene | 6 | ND | ND | ND | ND | ND | 1.6 | 1.3 | ND | 1.7 | ND | ND |
cis-1,2-Dichloroethylene | 70 | 75 | 20 | 14 | 30 | 180 | 360 | 380 | 110 | 820 | 27 | 75 |
trans-1,2-Dichloroethylene | 100 | 3.0 | 0.4 | 0.3 | ND | 1.4 | 5.1 | 4.2 | 1.2 | 11 | ND | 1.2 |
Dichlorodifluoromethane | 1000 | ND | ND | ND | ND | ND | ND | ND | ND | ND | ND | ND |
Ethyl Benzene | 700 | 7.0 | 5.3 | 5.3 | ND | ND | ND | ND | ND | ND | ND | ND |
Ethyl Ether | 1000 | ND | ND | ND | ND | ND | ND | ND | ND | ND | ND | ND |
Isopropylbenzene | 300 | 3.4 | ND | ND | ND | ND | ND | ND | ND | ND | ND | ND |
Isopropyltoluene | -- | ND | ND | ND | ND | ND | ND | ND | ND | ND | ND | ND |
Methyl Ethyl Ketone | 4000 | 76 | 8.8 | 8.9 | ND | ND | ND | ND | ND | ND | ND | ND |
Methyl Isobutyl Ketone | 300 | 21 | 18 | 16 | ND | ND | ND | ND | ND | ND | ND | ND |
Naphthalene | 300 | 1.9 | ND | ND | ND | ND | ND | ND | ND | ND | ND | ND |
n-Propylbenzene | -- | 2.0 | 1.2 | 1.3 | ND | ND | ND | ND | ND | ND | ND | ND |
Tetrachloroethylene | 7 | 52 | 18 | 13 | 15 | 190 | 300 | 360 | ND | 1200 | 24 | 84 |
Tetrahydrofuran | -- | 200 | 66 | 64 | ND | ND | ND | ND | ND | ND | ND | ND |
1,1,1-Trichloroethane | 600 | ND | ND | ND | ND | ND | ND | ND | ND | ND | ND | ND |
Toluene | 1000 | 2.2 | 1.2 | 1.2 | ND | ND | ND | ND | ND | ND | ND | ND |
1,1,2-Trichloroethylene | 30 | 44 | 15 | 11 | 9.8 | 83 | 120 | 130 | 34 | 310 | 8.7 | 35 |
Trichlorofluoromethane | 2000 | ND | ND | ND | ND | ND | ND | ND | ND | ND | ND | ND |
1,2,4-Trimethylbenzene | -- | ND | ND | ND | ND | ND | ND | ND | ND | ND | ND | ND |
1,3,5-Trimethylbenzene | -- | ND | ND | ND | ND | ND | ND | ND | ND | ND | ND | ND |
Vinyl Chloride | 0.2 | 31 | 3.0 | 2.4 | 4.6 | 6.1 | 6.2 | 14 | ND | 3.6 | 2.9 | 2.4 |
m,p-Xylene | 10000* | ND | ND | ND | ND | ND | ND | ND | ND | ND | ND | ND |
o-Xylene | 10000* | 1.3 | 1.2 | 1.2 | ND | ND | ND | ND | ND | ND | ND | ND |
Diesel Range Organics | -- | ND | 180 | 160 | NA | NA | NA | NA | NA | NA | NA | NA |
Gasoline Range Organics | -- | 710 | 350 | 370 | NA | NA | NA | NA | NA | NA | NA | NA |
NS = Not sampled
ND = Not detected
NA = Not analyzed
HRL = Minnesota Department of Health, Health Risk Limit
* = HRL established for mixture of isomers m, o, and p
Shading indicates concentration exceeds HRL.
Table 2. Historical Groundwater Analytical
Results
Groundwater Analytical Results (µg/L)
MW-1D
Parameter | HRL | 09/06/96 | 01/06/97 | 12/11/97 | 03/31/98 | 10/22/98 | 02/10/99 | 05/03/99 | 08/10/99 | 03/13/00 | 10/03/00** |
Acetone | 700 | 32 | ND | ND | ND | ND | ND | ND | ND | ND | ND |
Benzene | 10 | 14 | 7.6 | 5.2 | 3.9 | 4.8 | 5.7 | 6.2 | 3.7 | 2.7 | 2.1 (2.1) |
n-Butylbenzene | -- | ND | ND | ND | ND | ND | ND | ND | ND | ND | ND |
sec-Butylbenzene | -- | ND | ND | ND | ND | ND | ND | ND | ND | ND | ND |
tert-Butylbenzene | -- | ND | ND | ND | ND | ND | ND | ND | ND | ND | ND |
Chloroethane | -- | ND | 4.2 | ND | ND | ND | ND | ND | ND | ND | ND |
1,2-Dichloroethane | 4 | 0.8 | 0.4 | ND | ND | ND | ND | ND | ND | ND | ND |
1,1-Dichloroethylene | 6 | 2.5 | 1.4 | 1.3 | ND | 1.5 | 1.5 | 1.1 | ND | ND | 1.1 (ND) |
cis-1,2-Dichloroethylene | 70 | 52 | 62 | 22 | 100 | 95 | 210 | 39 | 100 | 190 | 56 (37) |
trans-1,2-Dichloroethylene | 100 | 0.9 | 0.9 | ND | 1.5 | 2.5 | 3.8 | ND | 2.2 | 3.5 | 1.1 (ND) |
Dichlorodifluoromethane | 1000 | ND | ND | 1.2 | ND | ND | ND | ND | ND | ND | ND |
Ethyl Benzene | 700 | 9.5 | 2.1 | ND | ND | ND | ND | ND | ND | ND | ND |
Ethyl Ether | 1000 | ND | ND | ND | ND | ND | ND | ND | ND | ND | ND |
Isopropylbenzene | 300 | 2.8 | 1.0 | ND | ND | ND | ND | ND | ND | ND | ND |
Isopropyltoluene | -- | ND | ND | ND | ND | ND | ND | ND | ND | ND | ND |
Methyl Ethyl Ketone | 4000 | 52 | 38 | ND | ND | ND | ND | ND | ND | ND | ND |
Methyl Isobutyl Ketone | 300 | ND | ND | ND | ND | ND | ND | ND | ND | ND | ND |
Naphthalene | 300 | 1.3 | ND | ND | ND | ND | ND | ND | ND | ND | ND |
n-Propylbenzene | -- | 1.0 | ND | ND | ND | ND | ND | ND | ND | ND | ND |
Tetrachloroethylene | 7 | ND | 19 | 13 | 190 | 190 | 140 | 15 | 170 | 48 | 9.5 (30) |
Tetrahydrofuran | -- | 52 | 34 | ND | ND | ND | ND | ND | ND | ND | ND |
1,1,1-Trichloroethane | 600 | ND | 0.7 | ND | ND | ND | ND | ND | ND | ND | ND |
Toluene | 1000 | 3.7 | ND | ND | ND | ND | ND | ND | ND | ND | ND |
1,1,2-Trichloroethylene | 30 | 7.2 | 11 | 5.0 | 47 | 54 | 460 | 73 | 190 | 610 | 110 (81) |
Trichlorofluoromethane | 2000 | ND | ND | ND | ND | ND | ND | ND | ND | ND | ND |
1,2,4-Trimethylbenzene | -- | 1.3 | ND | ND | ND | ND | ND | ND | ND | ND | ND |
1,3,5-Trimethylbenzene | -- | ND | ND | ND | ND | ND | ND | ND | ND | ND | ND |
Vinyl Chloride | 0.2 | 30 | 22 | 24 | 6.1 | 20 | 37 | 5.2 | 3.6 | 3.0 | ND (1.8) |
m,p-Xylene | 10000* | 2.7 | ND | ND | ND | ND | ND | ND | ND | ND | ND |
o-Xylene | 10000* | 2.8 | ND | ND | ND | ND | ND | ND | ND | ND | ND |
Diesel Range Organics | -- | ND | ND | NA | NA | NA | NA | NA | NA | NA | NA |
Gasoline Range Organics | -- | 290 | 210 | NA | NA | NA | NA | NA | NA | NA | NA |
NA = Not analyzed
ND = Not detected
NS = Not sampled
HRL = Minnesota Department of Health, Health Risk Limit
* = HRL established for mixture of isomers m, o, and p.
Shading indicates concentration exceeds HRL.
** = Concentrations in parentheses are results for split sample collected by
MPCA and analyzed by Northeast Technical Services on 10/3/00.
Table 2. Historical Groundwater Analytical
Results
Groundwater Analytical Results (µg/L)
MW-2S
Parameter | HRL | 09/06/96 | 01/06/97 | 12/11/97 | 03/31/98 | 10/23/98 | Duplicate 10/23/98 |
02/10/99 | 05/03/99 | 08/10/99 | 03/13/00 | 10/03/00 |
Acetone | 700 | 25 | 29 | ND | ND | ND | ND | ND | ND | ND | ND | ND |
Benzene | 10 | 2.1 | 8.9 | 14 | 8.0 | 6.6 | 6.8 | 4.3 | 2.5 | 8.2 | 2.2 | 1.1 |
n-Butylbenzene | -- | 8.0 | 24 | 5.9 | 8.4 | 3.0 | 3.1 | ND | ND | 4 | ND | ND |
sec-Butylbenzene | -- | 4.4 | 6.6 | 5.4 | 4.1 | 3.7 | 3.8 | ND | ND | 4.2 | ND | 2.9 |
tert-Butylbenzene | -- | ND | ND | ND | ND | ND | ND | ND | ND | ND | ND | ND |
Chloroethane | -- | ND | ND | ND | ND | ND | ND | ND | ND | ND | ND | ND |
1,2-Dichloroethane | 4 | ND | 0.4 | ND | ND | ND | ND | ND | ND | ND | ND | ND |
1,1-Dichloroethylene | 6 | ND | ND | ND | ND | 1.8 | 1.8 | ND | 2.0 | ND | ND | ND |
cis-1,2-Dichloroethylene | 70 | 11 | 21 | 170 | ND | 620 | 660 | 300 | 720 | 410 | 260 | 85 |
trans-1,2-Dichloroethylene | 100 | ND | 0.3 | 2.6 | 8.4 | 10 | 10 | ND | 9.5 | 6.8 | 2.8 | 6.8 |
Dichlorodifluoromethane | 1000 | ND | ND | ND | ND | ND | ND | ND | 1.1 | ND | ND | ND |
1,1-Dichloro-1-propylene | -- | ND | ND | ND | 1.3 | ND | 1.3 | ND | ND | ND | ND | ND |
Ethyl Benzene | 700 | 18 | 94 | 30 | 12 | 9.4 | 9.6 | 6.3 | 4.7 | 34 | 1.8 | 3.4 |
Ethyl Ether | 1000 | ND | 1.5 | ND | ND | ND | ND | ND | ND | ND | ND | ND |
Isopropylbenzene | 300 | 13 | 24 | 17 | 12 | 8.0 | 8.3 | 7.8 | 6.4 | 14 | 3.6 | 3.7 |
Isopropyltoluene | -- | ND | 2.5 | ND | ND | ND | ND | ND | ND | ND | ND | ND |
Methyl Ethyl Ketone | 4000 | 40 | 120 | ND | ND | ND | ND | ND | ND | ND | ND | ND |
Methyl Isobutyl Ketone | 300 | 10 | 13 | ND | ND | ND | ND | ND | ND | ND | ND | ND |
Naphthalene | 300 | 7.4 | 24 | ND | ND | ND | ND | ND | ND | 1.6 | ND | ND |
n-Propylbenzene | -- | 13 | 28 | 21 | 11 | 8.0 | 8.4 | 5.2 | ND | 10 | 1.5 | 2.0 |
Tetrachloroethylene | 7 | ND | ND | ND | 80 | 8.2 | 7.7 | ND | ND | 42 | ND | ND |
Tetrahydrofuran | -- | 64 | 130 | ND | 60 | ND | ND | ND | ND | ND | ND | ND |
1,1,1-Trichloroethane | 600 | ND | ND | ND | ND | ND | ND | ND | ND | ND | ND | ND |
Toluene | 1000 | 3.6 | 21 | 3.5 | 4.3 | 2.5 | 2.6 | 3.2 | 2.0 | 4.4 | 2.6 | 2.3 |
1,1,2-Trichloroethylene | 30 | 12 | 11 | 1.6 | 94 | 8.8 | 8.7 | 1.1 | 2.0 | 15.0 | ND | 2.0 |
Trichlorofluoromethane | 2000 | ND | ND | ND | ND | ND | ND | ND | ND | ND | ND | ND |
1,2,4-Trimethylbenzene | -- | 19 | 220 | ND | ND | 4.9 | 4.9 | ND | ND | 11 | ND | ND |
1,3,5-Trimethylbenzene | -- | 3.1 | 22 | ND | ND | 2.1 | 2.1 | ND | ND | 3.9 | ND | ND |
Vinyl Chloride | 0.2 | ND | 5.3 | 190 | 160 | 330 | 330 | 110 | 97 | 92 | 86 | 39 |
m,p-Xylene | 10000* | 5.0 | 200 | 6.0 | ND | 6.4 | 6.5 | 3 | 2.0 | 50 | ND | 1.8 |
o-Xylene | 10000* | 2.9 | 15 | 1.3 | 1.5 | ND | ND | ND | ND | 1.5 | ND | ND |
Diesel Range Organics | -- | 830 | 1000 | NA | NA | NA | NA | NA | NA | NA | NA | NA |
Gasoline Range Organics | -- | 840 | 2000 | NA | NA | NA | NA | NA | NA | NA | NA | NA |
NA = Not analyzed
ND = Not detected
NS = Not sampled
HRL = Minnesota Department of Health, Health Risk Limit
* = HRL established for mixture of isomers m, o, and p.
Shading indicates concentration exceeds HRL.
Results for 5/3/99 reported under MW-2D in Lab report due to sample mixup.
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