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 |
| 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.
| 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.






