Alaska Administrative Code
Title 18 - Environmental Conservation
Chapter 75 - Oil and Other Hazardous Substances Pollution Control
Article 3 - Discharge Reporting, Cleanup, and Disposal of Oil and Other Hazardous Substances
18 AAC 75.341 - Soil cleanup levels; tables
Current through February 27, 2024
(a) If a responsible person uses method one for petroleum hydrocarbons for a non-Arctic zone under 18 AAC 75.340, the soil cleanup levels must be based on Table A1 in this subsection. TABLE A1. METHOD ONE - PETROLEUM HYDROCARBON SOIL CLEANUP LEVELS IN NONARCTIC ZONES (See notes to table for further requirements) Part A: Determine score for each item* 1. Depth to Groundwater Less than 5 feet (10) 5 feet to 15 feet (8) More than 15 feet to 25 feet (6) More than 25 feet to 50 feet (4) More than 50 feet (1) 2. Mean Annual Precipitation More than 40 inches (10) More than 25 inches to 40 inches (5) 15 inches to 25 inches (3) Less than 15 inches (1) 3. Soil Type (Unified Soil Classification) Clean, course-grained soils (10) Coarse-grained soils with fines (8) Fine-grained soils (low organic carbon) (3) Fine-grained soils (high organic carbon) (1) 4. Potential Receptors (Select the most applicable category) a. Public water system within 1000 feet, or private water system within 500 feet (15) b. Public/private water system within 1/2 mile (12) c. Public/private water system within one mile (8) d. No water system within one mile (4) e. Nonpotable groundwater (1) 5. Volume of Contaminated Soil More than 500 cubic yards (10) More than 100 cubic yards to 500 cubic yards (8) More than 25 cubic yards to 100 cubic yards (5) 10 cubic yards to 25 cubic yards (2) Less than 10 cubic yards (0)
*The items to be scored are defined in note 1 to this table.
Part B: Add scores from Part A to determine matrix score and cleanup level
Cleanup Level in mg/kg Gasoline Diesel Residual Matrix Score for Range Range Range Each Category Organics Organics Organics Category A: More 50 100 2000 than 40 Category B: 26 - 40 100 200 2000 Category C: 21 - 26 500 1000 2000 Category D: Less 1000 2000 2000 than 21Notes to Table A1:
(b) If a responsible person uses method one for petroleum hydrocarbons for an Arctic zone under 18 AAC 75.340, the soil cleanup levels must be based on Table A2 in this subsection. TABLE A2. METHOD ONE - PETROLEUM HYDROCARBON SOIL CLEANUP LEVELS IN ARCTIC ZONES Cleanup Level in mg/kg Product Diesel Gasoline Residual Range Range Range Petroleum Petroleum Petroleum Hydrocarbons Hydrocarbons Hydrocarbons Gasoline N/A 100 N/A Diesel 200* N/A N/A Unknown/Crude 200 100 N/A Residual N/A N/A 2000
In this table, "N/A" means "not applicable."
*If a responsible party demonstrates that contamination is due to a diesel spill, that levels of benzene, toluene, ethylbenzene, and total xylene isomers (BTEX) are less than 15 mg/kg, that benzene levels are less than 0.5 mg/kg, and that other site conditions are favorable, and if the department determines that a less stringent level is protective of human health, safety, and welfare, and of the environment, the department will allow a cleanup level of 500 mg/kg for diesel range petroleum hydrocarbons.
The Arctic Zone numeric cleanup levels in this table cover only contamination related to manmade pads and roads. The department will determine the cleanup levels for undisturbed tundra or other undisturbed native vegetation on a site-specific basis, depending upon whether a cleanup action would cause more severe or long-term damage than would the discharge or release alone.
(c) If a responsible person uses method two for chemica ls other than petroleum hydrocarbons under 18 AAC 75.340, the soil cleanup levels must be based on Table B1 in this subsection.
TABLE B1. METHOD TWO - SOIL CLEANUP LEVELS TABLE (See notes for additional requirements) |
||||||
Hazardous Substance |
CAS Number1 |
health effect that drives risk: carcinogenic (a); noncarcinogen (nc); mutasren (m) |
Arctic Zone2 |
Under 40 Inch Zone3 |
Over 40 Inch Zone4 |
Migration to Groundwater6 (mg/kg) |
Human Health5 (mg/kg) |
Human Health5 (mg/kg) |
Human Health5 (mg/kg) |
||||
Acenaphthene7 |
83-32-9 |
nc |
6300 |
4600 |
3800 |
37 |
Acenaphthylene7x |
208-96-8 |
nc |
3100 |
2300 |
1900 |
18 |
Acetone |
67-64-1 |
nc |
1.0 x 10 5. 9 |
81000 |
65000 |
38 |
Aldrin |
309-00-2 |
ca |
0.67 |
0.49 |
0.40 |
0.0099 |
Ammonium Perchlorate |
7790-98-9 |
nc |
96 |
71 |
58 |
0.037 |
Anthracene7 |
120-12-7 |
nc |
31000 |
23000 |
19000 |
390 |
Antimony (metallic) |
7440-36-0 |
nc |
55 |
41 |
33 |
4.6 |
Arsenic, Inorganic11 |
7440-38-2 |
ca |
12 |
8.8 |
7.2 |
0.20 |
Barium |
7440-39-3 |
nc |
25000 |
20000 |
17000 |
2100 |
Benz[a]anthracene7 |
56-55-3 |
m |
2.7 |
2.0 |
1.7 |
0.28 |
Benzaldehyde |
100-52-7 |
nc |
77010 |
77010 |
77010 |
0.52 |
Benzene7 |
71-43-2 |
ca |
16 |
11 |
8.1 |
0.022 |
Benzo[a]pyrene7 |
50-32-8 |
m |
0.28 |
0.20 |
0.17 |
0.27 |
Benzo[b] fluoranthene7 |
205-99-2 |
m |
2.8 |
2.0 |
1.7 |
2.7 |
Benzo[g,h.i]perylene7,8 |
191-24-2 |
nc |
3100 |
2300 |
1900 |
15000 |
Benzo[k]fluoranthene7 |
207-08-9 |
m |
28 |
20 |
17 |
27 |
Benzoic Acid |
55-85-0 |
nc |
1.0 x 10 5. 9 |
1.0 x 10 5. 9 |
1.0 x 10 5. 9 |
200 |
Benzyl Alcohol |
100-51-6 |
nc |
11000 |
8200 |
6700 |
5.7 |
Beryllium and compounds |
7440-41-7 |
nc |
270 |
200 |
170 |
260 |
Bis(2-chloroethyl)ether |
111 -44-4 |
ca |
4.0 |
2.8 |
2.1 |
0.00042 |
Bis(2-ethyIhexyl)phthalate |
117-81-7 |
ca |
680 |
500 |
410 |
88 |
Bromobenzene |
108-86-1 |
nc |
16010 |
16010 |
16010 |
0.36 |
Bromodichloromethane |
75-27-4 |
ca |
5.3 |
3.6 |
2.6 |
0.0043 |
Bromoform |
75-25-2 |
ca |
340 |
240 |
170 |
0.10 |
Bromomethane |
74-83-9 |
nc |
15 |
10 |
7.4 |
0.024 |
Butadiene, 1,3- |
106-99-0 |
ca |
1.2 |
0.86 |
0.64 |
0.0012 |
Butanol, N- |
71-36-3 |
nc |
650010 |
650010 |
650010 |
5.3 |
Butyl Benzyl Phthalate |
85-68-7 |
ca |
5000 |
3700 |
3000 |
16 |
Butylbenzene, n- |
104-51-8 |
nc |
20 10 |
2010 |
2010 |
23 |
Butylbenzene, sec- |
135-98-8 |
nc |
28 10 |
2810 |
2810 |
42 |
Butylbenzene, tert- |
98-06-6 |
nc |
3510 |
3510 |
3510 |
11 |
Cadmium (Diet) |
7440-43-9 |
nc |
120 |
92 |
76 |
9.1 |
Carbon Disulfide |
75-15-0 |
nc |
50010 |
50010 |
50010 |
2.9 |
Carbon Tetrachloride |
56-23-5 |
ca |
13 |
9.1 |
6.6 |
0.021 |
Chlordane |
12789-03-6 |
ca |
29 |
22 |
17 |
0.18 |
Chlordecone(Kepone) |
143-50-0 |
ca |
0.95 |
0.70 |
0.58 |
0.0083 |
Chloroaniline, p- |
106-47-8 |
ca |
47 |
35 |
29 |
0.015 |
Chlorobenzene |
108-90-7 |
nc |
18010 |
18010 |
18010 |
0.46 |
Chloroform |
67-66-3 |
ca |
5.8 |
4.0 |
2.9 |
0.0071 |
Chloromethane |
74-87-3 |
nc |
250 |
170 |
120 |
0.61 |
Chloronaphtlhalene, Beta- |
91-58-7 |
nc |
8400 |
6200 |
5100 |
26 |
Chlorophenol, 2- |
95-57-8 |
nc |
680 |
510 |
410 |
0.71 |
Chromium(III), Insoluble Salts12 |
16065-83-1 |
nc |
1.0 x 105, 9 |
1.0 x 10 5, 9 |
1.0 x 10 5, 9 |
1.0 x 10 5, 9 |
Chromium(VI)12 |
18540-29-9 |
m |
4.9 |
3.9 |
3.2 |
0.089 |
Chrysene7 |
218-01-9 |
m |
280 |
200 |
170 |
82 |
Copper |
7440-50-8 |
nc |
5500 |
4100 |
3400 |
370 |
Cresol, m- |
108-39-4 |
nc |
5500 |
4100 |
3400 |
6.1 |
Cresol, o- |
95-48-7 |
nc |
5500 |
4100 |
3400 |
6.2 |
Cresol, p- |
106-44-5 |
nc |
11000 |
8200 |
6700 |
12 |
Cumene |
98-82-8 |
nc |
54 10 |
5410 |
5410 |
5.6 |
Cyanide (CN-)13 |
57-12-5 |
nc |
48 |
34 |
26 |
0.20 |
Cyclohexane |
110-82-7 |
nc |
7710 |
7710 |
7710 |
150 |
DDD |
72-54-8 |
ca |
40 |
29 |
24 |
0.49 |
DDE. p,p'- |
72-55-9 |
ca |
34 |
25 |
20 |
0.72 |
DDT |
50-29-3 |
ca |
33 |
24 |
20 |
5.1 |
Dibenz[a,h]anthracene7 |
53-70-3 |
m |
0.28 |
0.20 |
0.17 |
0.87 |
Dibenzofuran |
132-64-9 |
nc |
130 |
95 |
77 |
0.97 |
Dibromochloromethane |
124-48-1 |
ca |
140 |
110 |
88 |
0.0027 |
Dibromoethane. 1.2- (Ethylene Dibromide) |
106-93-4 |
ca |
0.62 |
0.42 |
0.31 |
0.00024 |
Dibromomethane (Methylene Bromide) |
74-95-3 |
nc |
45 |
31 |
22 |
0.025 |
Dibutyl Phthalate |
84-74-2 |
nc |
11000 |
8200 |
6700 |
16 |
Dichlorobenzene, 1.2- |
95-50-1 |
nc |
7810 |
7810 |
78 10 |
2.4 |
Dichlorobenzene, 1,3-8 |
541-73-1 |
nc |
6210 |
6210 |
6210 |
2.3 |
Dichlorobenzene. 1.4- |
106-46-7 |
ca |
31 |
21 |
15 |
0.037 |
Dichlorobenzidine. 3,3'- |
91-94-1 |
ca |
21 |
16 |
13 |
0.056 |
Dichlorodifluoromethane |
75-71-8 |
nc |
220 |
150 |
110 |
3.9 |
Diehloroethane, 1.1- |
75-34-3 |
ca |
67 |
46 |
33 |
0.092 |
Diehloroethane, 1.2- |
107-06-2 |
ca |
7.9 |
5.5 |
3.9 |
0.0055 |
Dichloroeihylene, 1,1- |
75-35-4 |
nc |
480 |
330 |
240 |
1.2 |
Dichloroethylene, 1,2-cis- |
156-59-2 |
nc |
270 |
200 |
170 |
0.12 |
Dichloroethylene, 1,2-trans- |
156-60-5 |
nc |
96010 |
96010 |
96010 |
1.3 |
Dichlorophenol. 2.4- |
120-83-2 |
nc |
330 |
250 |
200 |
0.21 |
Dichlorophenoxy Acetie Acid, 2.4- |
94-75-7 |
nc |
1200 |
910 |
740 |
0.53 |
Dichloropropane, 1,2- |
78-87-5 |
ca |
16 |
11 |
8.0 |
0.016 |
Dichloropropene, 1,3- |
542-75-6 |
ca |
29 |
21 |
15 |
0.018 |
Dieldrin |
60-57-1 |
ca |
0.59 |
0.44 |
0.36 |
0.0047 |
Diethyl Phthalate |
84-66-2 |
nc |
88000 |
66000 |
54000 |
60 |
Dimethylphenol, 2.4- |
105-67-9 |
nc |
2200 |
1600 |
1300 |
3.2 |
Dimethylphthalate8 |
131-1 1-3 |
nc |
88000 |
66000 |
54000 |
48 |
Dinitrobenzene, 1,2- |
528-29-0 |
nc |
11 |
8.2 |
6.7 |
0.014 |
Dinitrobenzene, 1.3- |
99-65-0 |
nc |
11 |
8.2 |
6.7 |
0.014 |
Dinitrobenzene, 1.4- |
100-25-4 |
nc |
11 |
8.2 |
6.7 |
0.014 |
Dinitrophenol, 2,4- |
51-28-5 |
nc |
220 |
160 |
130 |
0.34 |
Dinitrotoluene, 2,4- |
121-14-2 |
ca |
30 |
23 |
18 |
0.024 |
Dinitrololuene, 2.6- |
606-20-2 |
ca |
6.3 |
4.7 |
3.8 |
0.0050 |
Dinitrotoluene, 2-A mino-4,6- |
35572-78-2 |
nc |
270 |
200 |
160 |
0.25 |
Dinitrololuene, 4-A mino-2,6- |
19406-51-0 |
nc |
270 |
200 |
160 |
0.25 |
Dioxane, 1,4- |
123-91-1 |
ca |
100 |
73 |
58 |
0.012 |
Diphenylamine |
122-39-4 |
nc |
2800 |
2000 |
1700 |
4.3 |
Endosulfan |
1 15-29-7 |
nc |
820 |
610 |
500 |
9.3 |
Endrin |
72-20-8 |
nc |
33 |
25 |
20 |
0.61 |
Ethyl Chloride |
75-00-3 |
nc |
140010 |
I40010 |
140010 |
72 |
Ethylbenzene7 |
100-41-4 |
ca |
72 |
49 |
35 |
0.13 |
Ethylene Glycol |
107-21-1 |
nc |
1.0 x 10 5, 9 |
1.0 x 10 5, 9 |
1.0 x 10 5, 9 |
110 |
Fluoranthene7 |
206-44-0 |
nc |
4200 |
3100 |
2500 |
590 |
Fluorene7 |
86-73-7 |
nc |
4200 |
3100 |
2500 |
36 |
Formaldehyde |
50-00-0 |
ca |
430 |
290 |
210 |
0.011 |
Heptachlor |
76-44-8 |
ca |
2.2 |
1.6 |
1.3 |
0.0076 |
Heptachlor Epoxide |
1024-57-3 |
ca |
1.2 |
0.86 |
0.69 |
0.0019 |
Hexachlorobenzene |
118-74-1 |
ca |
2.8 |
2.0 |
1.5 |
0.0082 |
Hexachlorobutadiene |
87-68-3 |
nc |
3.310 |
3.310 |
3.310 |
0.020 |
Hexachlorocyclohexane, Alpha- |
319-84-6 |
ca |
1.5 |
1.1 |
0.91 |
0.0029 |
Hexachlorocyclohexane, Bela- |
319-85-7 |
ca |
5.3 |
3.9 |
3.2 |
0.010 |
Hexachlorocyclohexane, Gamma- (Lindane) |
58-89-9 |
ca |
9.9 |
7.4 |
6.0 |
0.016 |
Hexachlorocyclopentadiene |
77-47-4 |
nc |
2.0 |
1.4 |
1.0 |
0.0093 |
Hexachloroethane |
67-72-1 |
ca |
24 |
17 |
12 |
0.018 |
Hexahydro-l,3.5-trinitro-1.3,5-triazine (RDX) |
121-82-4 |
ca |
110 |
79 |
64 |
0.027 |
Hexane, N- |
110-54-3 |
nc |
13010 |
13010 |
13010 |
13010 |
Hexanone, 2- |
591-78-6 |
nc |
380 |
270 |
210 |
0.11 |
Hydrazine |
302-01-2 |
ca |
0.79 |
0.55 |
0.40 |
2.9 x 10-5 |
Indeno[1,2,3-cd]pyrene7 |
193-39-5 |
m |
2.8 |
2.0 |
1.7 |
8.8 |
Isophorone |
78-59-1 |
ca |
10000 |
7400 |
6100 |
2.7 |
Isopropanol |
67-63-0 |
nc |
14000 |
9500 |
6800 |
1.1 |
Load and Compounds14 |
7439-92-1 |
nc |
400 |
400 |
400 |
n/a-6 |
Mercuric Chloride8 |
7487-94-7 |
nc |
41 |
30 |
25 |
3.9 |
Mercury (elemental) |
7439-97-6 |
nc |
3.110 |
3.110 |
3.110 |
0.36 |
Methanol |
67-56-1 |
nc |
1.0 x 10 5.9 |
1.0 x 105.9 |
1.0 x 10 5.9 |
54 |
Methoxychlor |
72-43-5 |
nc |
550 |
410 |
340 |
13 |
Methyl Ethyl Ketone (2-Butanone) |
78-93-3 |
nc |
23000 10 |
2300010 |
23000 10 |
15 |
Methyl Isobulyl Ketone (4-methyl-2-penlanone) |
108-10-1 |
nc |
2200 10 |
220010 |
2200 10 |
18 |
Methyl Mercury |
22967-92-6 |
nc |
14 |
10 |
8.3 |
180 |
Methyl tert-Butyl Ether (MTBE) |
1634-04-4 |
ca |
970 |
670 |
480 |
0.40 |
Methylene Chloride |
75-09-2 |
nc |
630 |
460 |
360 |
0.33 |
Methylnaphthalene, 1 - |
90-12-0 |
ca |
6810 |
6810 |
6810 |
0.41 |
Methylnaphthalene, 2- |
91-57-6 |
nc |
420 |
310 |
250 |
1.3 |
Naphthalene7 |
91-20-3 |
ca |
42 |
29 |
20 |
0.038 |
Nickel Soluble Salts |
7440-02-0 |
nc |
2600 |
2000 |
1700 |
340 |
Nitrobenzene |
98-95-3 |
ca |
63 |
43 |
31 |
0.0079 |
Nitroglycerin |
55-63-0 |
nc |
11 |
8.2 |
6.7 |
0.0082 |
Nitroguanidine |
556-88-7 |
nc |
11000 |
8200 |
6700 |
5.8 |
Nitrosodimethylamine, N- |
62-75-9 |
m |
0.036 |
0.026 |
0.020 |
3.3 x 10-6 |
Nitroso-di-N-propylamine, N- |
621 -64-7 |
ca |
1.4 |
1.00 |
0.82 |
0.00068 |
Nitrosodiphenylamine, N- |
86-30-6 |
ca |
1900 |
1400 |
1200 |
4.6 |
Nitrotoluene, m- |
99-08-1 |
nc |
11 |
8.2 |
6.7 |
0.013 |
Nitrotoluene, o- |
88-72-2 |
ca |
55 |
41 |
34 |
0.024 |
Nitrotoluene, p- |
99-99-0 |
nc |
440 |
330 |
270 |
0.32 |
Octahydro-1.3, 5.7-tetranitro-1.3, 5.7-tctrazocine (HMX) |
2691-41-0 |
nc |
6700 |
5000 |
4100 |
9.7 |
Octyl Phthalate, di-N- |
117-84-0 |
nc |
1100 |
820 |
670 |
370 |
Pentachlorophenol |
87-86-5 |
ca |
18 |
13 |
11 |
0.0043 |
Pentaerythritol tetranitrate (PETN) |
78-11-5 |
nc |
220 |
160 |
130 |
0.43 |
Perfluorooctane, Sulfonate-(PFOS)-20 |
1763-23-1 |
nc |
2.2 |
1.6 |
1.3 |
0.0030 |
Perfluorooctanoic Acid (PFOA)-20 |
335-67-1 |
nc |
2.2 |
1.6 |
1.3 |
0.0017 |
Phenanthrene7, 8 |
85-01-8 |
nc |
3100 |
2300 |
1900 |
39 |
Phenol |
108-95-2 |
nc |
33000 |
25000 |
20000 |
29 |
Phosphorus, White |
7723-14-0 |
nc |
2.7 |
2.0 |
1.7 |
0.020 |
Polychlorinaled Biphenyls (total)15 |
1336-36-3 |
ca |
1.0 |
1.0 |
1.0 |
n/a-6 |
Propyl benzene |
103-65-1 |
nc |
5210 |
5210 |
52 10 |
9.1 |
Pyrene7 |
129-00-0 |
nc |
3100 |
2300 |
1900 |
87 |
Selenium |
7782-49-2 |
nc |
680 |
510 |
410 |
6.9 |
Silver |
7440-22-4 |
nc |
680 |
510 |
410 |
11 |
Styrene |
100-42-5 |
nc |
180 10 |
18010 |
18010 |
10 |
TCDD, 2,3,7,8-16 |
1746-01-6 |
ca |
8.2 x 10-5 |
6.0 x 10-5 |
4.9 x 10-5 |
3.9 x 10-6 |
Tetraehlorocthane,1.1.1.2- |
630-20-6 |
ca |
30 |
21 |
15 |
0.022 |
Tetrachlorocthane.1.1.2.2- |
79-34-5 |
ca |
8.8 |
6.1 |
4.4 |
0.0030 |
Tetrachloroethylene |
127-18-4 |
nc |
68 10 |
6810 |
6810 |
0.19 |
Tetryl (Trinitrophenylmethy lnitramine) |
479-45-8 |
nc |
270 |
200 |
170 |
2.5 |
Thallium (Soluble Salts) |
7440-28-0 |
nc |
1.4 |
1.00 |
0.83 |
0.19 |
Toluene7 |
108-88-3 |
nc |
20010 |
20010 |
20010 |
6.7 |
Toxaphene |
8001-35-2 |
ca |
8.6 |
6.4 |
5.2 |
0.72 |
Trichloro-1 ,2,2-trifluoroethane, 1,1,2- |
76-13-1 |
nc |
74010 |
74010 |
74010 |
1700 |
Trichlorobenzene, 1,2,3- |
87-61-6 |
nc |
110 |
81 |
66 |
0.15 |
Trichlorobenzene, 1.2,4- |
120-82-1 |
nc |
65 |
45 |
32 |
0.082 |
Trichloroethane, 1,1,1- |
71-55-6 |
nc |
36010 |
36010 |
36010 |
32 |
Trichloroethane, 1.1,2- |
79-00-5 |
nc |
2.3 |
1.6 |
1.1 |
0.0014 |
Trichloroethylene |
79-01-6 |
nc |
7.1 |
4.9 |
3.5 |
0.011 |
Trichlorofluoromethane |
75-69-4 |
nc |
980 10 |
98010 |
980 10 |
41 |
Trichlorophenol, 2,4,5- |
95-95-4 |
nc |
11000 |
8200 |
6700 |
28 |
Trichlorophenol, 2,4,6- |
88-06-2 |
nc |
110 |
82 |
67 |
0.092 |
Trichlorophenoxyacetic Acid. 2,4.5- |
93-76-5 |
nc |
1100 |
820 |
670 |
0.66 |
Trichlorophenoxypropionic acid. -2,4.5 |
93-72-1 |
nc |
880 |
660 |
540 |
0.55 |
Trichloropropane, 1,2,3- |
96-18-4 |
m |
0.089 |
0.066 |
0.054 |
3.1 x 10 -5 |
Trimethylbenzene, 1.2,4- |
95-63-6 |
nc |
4310 |
4310 |
33 |
0.16 |
Trimethylbenzene, 1,3,5- |
108-67-8 |
nc |
37 10 |
3710 |
3710 |
1.3 |
Tri-n-butyltin |
688-73-3 |
nc |
41 |
30 |
25 |
0.68 |
Trinitrobenzene, 1,3,5- |
99-35-4 |
nc |
3900 |
2900 |
2400 |
15 |
Trinitrotoluene, 2,4,6- |
118-96-7 |
nc |
64 |
47 |
39 |
0.39 |
Vanadium and Compounds |
7440-62-2 |
nc |
680 |
510 |
420 |
1100 |
Vinyl Acetate |
108-05-4 |
nc |
2100 |
1400 |
1000 |
1.1 |
Vinyl Chloride |
75-01-4 |
ca |
0.69 |
0.65 |
0.61 |
0.00080 |
Xylenes7 |
1330-20-7 |
nc |
5710 |
5710 |
5710 |
1.5 |
Zinc and Compounds |
7440-66-6 |
nc |
41000 |
30000 |
25000 |
4900 |
See notes to table for further requirements "n/a" means not applicable. |
NOTES TO TABLE B1 FOLLOW TABLE B2 IN (d) OF THIS SECTION
(d) If a responsible person uses method two for petroleum hydrocarbons under 18 AAC 75.340, the soil cleanup levels must be based on Table B2 in this subsection.
TABLE B2. METHOD TWO - PETROLEUM HYDROCARBON SOIL CLEANUP LEVELS |
||||||||||
Petroleum Hydrocarbon Range |
Arctic Zone2 mg/kg |
Under 40 Inch Zone3 |
Over 40 Inch Zone4 |
Maximum Allowable Concentrations17mg/kg |
||||||
Ingestion (mg/kg)18 |
Inhalation (mg/kg)19 |
Migration to Groundwater (mg/kg)6 |
Ingestion (mg/kg)18 |
Inhalation (mg/kg)19 |
Migration to groundwater (mg/kg)6 |
Ingestion (mg/kg)18 |
Inhalation (mg/kg)19 |
Migration to Groundwater (mg/kg)6 |
||
For Laboratory Analysis using AK Methods 101, 102, and 103 |
||||||||||
C6-C10 GRO using AK 101 |
1400 |
1400 |
n/a |
1400 |
1400 |
300 |
1400 |
1400 |
260 |
1400 |
C10-C25 DRO using AK 102 |
12500 |
12500 |
n/a |
10250 |
12500 |
250 |
8250 |
12500 |
230 |
12500 |
C25-C36 RRO using AK 103 |
13700 |
22000 |
n/a |
10000 |
22000 |
11000 |
8300 |
22000 |
9700 |
22000 |
For Laboratory Analysis using AK Aliphatic and Aromatic Fraction Methods 101AA, 102AA, and 103AA |
||||||||||
C6-C10 Aliphatics |
1000 |
1000 |
n/a |
1000 |
1000 |
270 |
1000 |
1000 |
240 |
1000 |
C6-C10 Aromatics |
1000 |
1000 |
n/a |
1000 |
1000 |
150 |
1000 |
1000 |
130 |
1000 |
C10-C25 Aliphatics |
10000 |
10000 |
n/a |
10000 |
10000 |
7200 |
8300 |
10000 |
6400 |
10000 |
C10-C25 Aromatics |
5000 |
5000 |
n/a |
4100 |
5000 |
100 |
3300 |
5000 |
90 |
5000 |
C25-C36 Aliphatics |
20000 |
20000 |
n/a |
20000 |
20000 |
20000 |
20000 |
20000 |
20000 |
20000 |
C25-C36 Aromatics |
4100 |
10000 |
n/a |
3000 |
10000 |
3300 |
2500 |
10000 |
2900 |
10000 |
See notes to table for further requirements, "n/a" means not applicable. |
Notes to Tables B1 and B2:
If applicable, alternative cleanup levels must be protective of migration to surface water. Concenlrations of hazardous substances in soil musl be calculaled and presenled on a per dry weight basis. For volatile organic hazardous subslances for which toxicity data are not currently available or calculated levels exceed the calculaled saturalion concentration, the cleanup level lhat applies at a site is the calculated saturation concentration determined using lhe equalions sel out in the Procedures for Calculating Cleanup Levels, adopted by reference in 18 AAC 75.340. The cleanup level from Table B1 or B2 thal applies at a site is the most stringenl of lhe applicable exposure pathway-specific cleanup levels based on human health, ingestion, inhalation, or migration to groundwater. Where the superscript figure "9" follows the exponent "105", separated by a semicolon, the figure "9" refers to Note 9.
The applicable EPA rule governing disposal and cleanup of PCB contaminated facilities under 40 C.F.R. Part 761.61 (PCB remediation waste) may apply to PCB cleanup at a contaminated site. The PCB cleanup levels listed in Table B1 are based on cleanup levels referred to in 40 C.F.R. 761.61 for high occupancy areas with no cap.
Authority:AS 46.03.020
AS 46.03.050
AS 46.03.710
AS 46.03.740
AS 46.03.745
AS 46.04.020
AS 46.04.070
AS 46.09.020