Code of Massachusetts Regulations
310 CMR - DEPARTMENT OF ENVIRONMENTAL PROTECTION
Title 310 CMR 40.0000 - Massachusetts Contingency Plan
Subpart I - RISK CHARACTERIZATION
Section 40.0985 - Determination of Method 2 Soil Standards Considering Leaching Potential
Current through Register 1531, September 27, 2024
MCP Method 1 Soil Standards consider both the risks associated with direct contact with the contaminated soil and the potential for the oil and/or hazardous material to leach to groundwater. The leaching component of the MCP Method 1 Soil Standards can be modified or eliminated in Method 2 considering site-specific information. The direct contact-exposure component of the standard shall not be adjusted in this Method.
(1) The development of alternative leaching-based soil concentrations or the determination that leaching-based concentrations are not applicable shall be based upon information which is scientifically justified and completely documented.
(2) When developing alternative leaching-based concentrations in soil, alternative values shall be developed for each oil and hazardous material and for each applicable groundwater category. Demonstrations that the leaching-based component of the Method 1 soil standards is not applicable may be made on a chemical-by-chemical basis or for the site as a whole, depending upon the information relevant to that determination.
(3) The following methods may be used to demonstrate that the concentrations of oil and/or hazardous material in soil at the disposal site now and in the foreseeable future will result in compliance with all applicable MCP Method 1 or 2 Groundwater Standards:
(4) For each combination of soil category (S-1, S-2, and S-3) and groundwater category (GW-1, GW-2, and GW-3), the lower of the following is the applicable MCP Method 2 Soil Standard for the oil and/or hazardous material:
(5) Groundwater monitoring shall demonstrate that residual soil contamination is not and will not result in groundwater concentrations greater than the applicable MCP Method 1 or 2 Groundwater Standards. The duration of required monitoring shall depend on the source mass, the mobility of the oil and/or hazardous material, and subsurface conditions.
(6) Table 5 Lists the Direct Contact Exposure-based Soil Concentrations.
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310 CMR 40.0985(6): TABLE 5 [DOUBLE DAGGER] MCP Method 2: DIRECT CONTACT EXPOSURE-BASED SOIL CONCENTRATIONS APPLICABLE TO THE SPECIFIED SOIL CATEGORY. |
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|
Oil and/or Hazardous Material |
CAS Number |
Soil Category S-1 µg/g (ppm) |
Soil Category S-2 µg/g (ppm) |
Soil Category S-3 µg/g (ppm) |
|
ACENAPHTHENE |
83-32-9 |
1,000 |
3,000 |
5,000 |
|
ACENAPHTHYLENE |
208-96-8 |
1,000 |
3,000 |
5,000 |
|
ACETONE |
67-64-1 |
500 |
1,000 |
3,000 |
|
ALDRIN |
309-00-2 |
0.09 |
0.5 |
4 |
|
ALIPHATIC HYDROCARBONS (See Petroleum HydrocarbonS) | ||||
|
ANTHRACENE |
120-12-7 |
1,000 |
3,000 |
5,000 |
|
ANTIMONY |
7440-36-0 |
20 |
40 |
40 |
|
AROMATIC HYDROCARBONS (See Petroleum Hydrocarbons) | ||||
|
ARSENIC |
7440-38-2 |
20 |
20 |
60 |
|
BARIUM |
7440-39-3 |
1,000 |
3,000 |
5,000 |
|
BENZENE |
71-43-2 |
40 |
200 |
1,000 |
|
BENZO(a)ANTHRACENE |
56-55-3 |
20 |
300 |
2,000 |
|
BENZO(a)PYRENE |
50-32-8 |
2 |
30 |
30 |
|
BENZO(b)FLUORANTHENE |
205-99-2 |
20 |
300 |
2,000 |
|
BENZO(g,h,i)PERYLENE |
191-24-2 |
1,000 |
3,000 |
5,000 |
|
BENZO(k)FLUORANTHENE |
207-08-9 |
200 |
3,000 |
5,000 |
|
BERYLLIUM |
7440-41-7 |
100 |
200 |
200 |
|
BIPHENYL, 1,1- |
92-52-4 |
200 |
1,000 |
5,000 |
|
BIS(2-CHLOROETHYL)ETHER |
111-44-4 |
2 |
9 |
90 |
|
BIS(2-CHLOROISOPROPYL)ETHER |
108-60-1 |
30 |
100 |
1,000 |
|
BIS(2-ETHYLHEXYL)PHTHALATE |
117-81-7 |
100 |
700 |
2,000 |
|
BROMODICHLOROMETHANE |
75-27-4 |
40 |
200 |
500 |
|
BROMOFORM |
75-25-2 |
300 |
1,000 |
3,000 |
|
BROMOMETHANE |
74-83-9 |
100 |
700 |
700 |
|
CADMIUM |
7440-43-9 |
80 |
80 |
80 |
|
CARBON TETRACHLORIDE |
56-23-5 |
30 |
100 |
1,000 |
|
CHLORDANE |
12789-03-6 |
6 |
30 |
60 |
|
CHLOROANILINE, p- |
106-47-8 |
7 |
40 |
40 |
|
CHLOROBENZENE |
108-90-7 |
500 |
1,000 |
3,000 |
|
CHLOROFORM |
67-66-3 |
500 |
1,000 |
1,000 |
|
CHLOROPHENOL, 2- |
95-57-8 |
100 |
400 |
400 |
|
CHROMIUM (TOTAL) * |
7440-47-3 |
100 |
200 |
200 |
|
CHROMIUM(III) |
16065-83-1 |
1,000 |
3,000 |
5,000 |
|
CHROMIUM(VI) |
18540-29-9 |
100 |
200 |
200 |
|
CHRYSENE |
218-01-9 |
200 |
3,000 |
5,000 |
|
CYANIDE ** |
57-12-5 |
30 |
400 |
500 |
|
DIBENZO(a,h)ANTHRACENE |
53-70-3 |
2 |
30 |
200 |
|
DIBROMOCHLOROMETHANE |
124-48-1 |
30 |
100 |
500 |
|
DICHLOROBENZENE, 1,2- (o-DCB) |
95-50-1 |
1,000 |
3,000 |
5,000 |
|
DICHLOROBENZENE, 1,3- (m-DCB) |
541-73-1 |
100 |
500 |
500 |
|
DICHLOROBENZENE, 1,4- (p-DCB) |
106-46-7 |
100 |
400 |
3,000 |
|
DICHLOROBENZIDINE, 3,3'- |
91-94-1 |
3 |
20 |
100 |
|
DICHLORODIPHENYL DICHLOROETHANE, P,P'- (DDD) |
72-54-8 |
10 |
40 |
70 |
|
DICHLORODIPHENYL DICHLOROETHYLENE,P,P'- (DDE) |
72-55-9 |
7 |
30 |
70 |
|
DICHLORODIPHENYL TRICHLOROETHANE, P,P'- (DDT) |
50-29-3 |
7 |
30 |
70 |
|
DICHLOROETHANE, 1,1- |
75-34-3 |
500 |
1,000 |
3,000 |
|
DICHLOROETHANE, 1,2- |
107-06-2 |
30 |
100 |
1,000 |
|
DICHLOROETHYLENE, 1,1- |
75-35-4 |
500 |
1,000 |
3,000 |
|
DICHLOROETHYLENE, CIS-1,2- |
156-59-2 |
100 |
500 |
500 |
|
DICHLOROETHYLENE, TRANS-1,2- |
156-60-5 |
500 |
1,000 |
3,000 |
|
DICHLOROMETHANE |
75-09-2 |
300 |
800 |
800 |
|
DICHLOROPHENOL, 2,4- |
120-83-2 |
80 |
900 |
900 |
|
DICHLOROPROPANE, 1,2- |
78-87-5 |
60 |
300 |
1,000 |
|
DICHLOROPROPENE, 1,3- |
542-75-6 |
20 |
100 |
1,000 |
|
DIELDRIN |
60-57-1 |
0.09 |
0.6 |
4 |
|
DIETHYL PHTHALATE |
84-66-2 |
1,000 |
3,000 |
5,000 |
|
DIMETHYL PHTHALATE |
131-11-3 |
1,000 |
3,000 |
5,000 |
|
DIMETHYLPHENOL, 2,4- |
105-67-9 |
500 |
2,000 |
2,000 |
|
DINITROPHENOL, 2,4- |
51-28-5 |
50 |
900 |
900 |
|
DINITROTOLUENE, 2,4- |
121-14-2 |
2 |
10 |
90 |
|
DIOXANE, 1,4- |
123-91-1 |
20 |
100 |
500 |
|
ENDOSULFAN |
115-29-7 |
300 |
500 |
500 |
|
ENDRIN |
72-20-8 |
20 |
30 |
30 |
|
ETHYLBENZENE |
100-41-4 |
500 |
1,000 |
3,000 |
|
ETHYLENE DIBROMIDE |
106-93-4 |
1 |
5 |
50 |
|
FLUORANTHENE |
206-44-0 |
1,000 |
3,000 |
5,000 |
|
FLUORENE |
86-73-7 |
1,000 |
3,000 |
5,000 |
|
HEPTACHLOR |
76-44-8 |
0.3 |
2 |
10 |
|
HEPTACHLOR EPOXIDE |
1024-57-3 |
0.2 |
1 |
1 |
|
HEXACHLOROBENZENE |
118-74-1 |
0.7 |
0.9 |
0.9 |
|
HEXACHLOROBUTADIENE |
87-68-3 |
30 |
100 |
100 |
|
HEXACHLOROCYCLOHEXANE, GAMMA (gamma-HCH) |
58-89-9 |
2 |
8 |
70 |
|
HEXACHLOROETHANE |
67-72-1 |
50 |
300 |
300 |
|
HMX |
2691-41-0 |
1,000 |
3,000 |
5,000 |
|
INDENO(1,2,3-cd)PYRENE |
193-39-5 |
20 |
300 |
2,000 |
|
LEAD |
7439-92-1 |
200 |
600 |
600 |
|
MERCURY |
7439-97-6 |
20 |
40 |
40 |
|
METHOXYCHLOR |
72-43-5 |
300 |
400 |
400 |
|
METHYL ETHYL KETONE |
78-93-3 |
500 |
1,000 |
3,000 |
|
METHYL ISOBUTYL KETONE |
108-10-1 |
500 |
1,000 |
3,000 |
|
METHYL MERCURY |
22967-92-6 |
5 |
9 |
9 |
|
METHYL TERT BUTYL ETHER |
1634-04-4 |
100 |
500 |
500 |
|
METHYLNAPHTHALENE, 2- |
91-57-6 |
300 |
500 |
500 |
|
NAPHTHALENE |
91-20-3 |
500 |
1,000 |
3,000 |
|
NICKEL |
7440-02-0 |
700 |
1,000 |
1,000 |
|
PENTACHLOROPHENOL |
87-86-5 |
3 |
20 |
80 |
|
PER- AND POLYFLUOROALKYL SUBSTANCES (PFAS)*** | ||||
|
PERFLUORODECANOIC ACID (PFDA) |
335-76-2 |
0.3 |
0.4 |
0.4 |
|
PERFLUOROHEPTANOIC ACID (PFHpA) |
375-85-9 |
0.3 |
0.4 |
0.4 |
|
PERFLUOROHEXANESULFONIC ACID (PFHxS) |
355-46-4 |
0.3 |
0.4 |
0.4 |
|
PERFLUORONONANOIC ACID (PFNA) |
375-95-1 |
0.3 |
0.4 |
0.4 |
|
PERFLUOROOCTANESULFONIC ACID (PFOS) |
1763-23-1 |
0.3 |
0.4 |
0.4 |
|
PERFLUOROOCTANOIC ACID (PFOA) |
335-67-1 |
0.3 |
0.4 |
0.4 |
|
PERCHLORATE |
NA |
4 |
6 |
6 |
|
PETROLEUM HYDROCARBONS | ||||
|
TOTAL PETROLEUM HYDROCARBON [DAGGER] |
NA |
1,000 |
3,000 |
5,000 |
|
ALIPHATIC HYDROCARBONS | ||||
|
C5 through C8 Aliphatic Hydrocarbons |
NA |
100 |
500 |
500 |
|
C9 through C12 Aliphatic Hydrocarbons |
NA |
1,000 |
3,000 |
5,000 |
|
C9 through C18 Aliphatic Hydrocarbons |
NA |
1,000 |
3,000 |
5,000 |
|
C19 through C36 Aliphatic Hydrocarbons |
NA |
3,000 |
5,000 |
5,000 |
|
AROMATIC HYDROCARBONS | ||||
|
C9 through C10 Aromatic Hydrocarbons |
NA |
100 |
500 |
500 |
|
C11 through C22 Aromatic Hydrocarbons |
NA |
1,000 |
3,000 |
5,000 |
|
PHENANTHRENE |
85-01-8 |
500 |
1,000 |
3,000 |
|
PHENOL |
108-95-2 |
500 |
1,000 |
3,000 |
|
POLYCHLORINATED BIPHENYLS (PCBs) |
1336-36-3 |
1 |
4 |
4 |
|
PYRENE |
129-00-0 |
1,000 |
3,000 |
5,000 |
|
RDX |
121-82-4 |
20 |
90 |
400 |
|
SELENIUM |
7782-49-2 |
400 |
800 |
800 |
|
SILVER |
7440-22-4 |
100 |
200 |
200 |
|
STYRENE |
100-42-5 |
80 |
300 |
3,000 |
|
TETRACHLORODIBENZO-p-DIOXIN (TCDD), 2,3,7,8-(equivalents) |
1746-01-6 |
2.E-05 |
6.E-05 |
6E-05 |
|
TETRACHLOROETHANE, 1,1,1,2- |
630-20-6 |
90 |
400 |
500 |
|
TETRACHLOROETHANE, 1,1,2,2- |
79-34-5 |
10 |
50 |
500 |
|
TETRACHLOROETHYLENE |
127-18-4 |
100 |
500 |
800 |
|
THALLIUM |
7440-28-0 |
8 |
70 |
90 |
|
TOLUENE |
108-88-3 |
500 |
1,000 |
3,000 |
|
TRICHLOROBENZENE, 1,2,4- |
120-82-1 |
700 |
3,000 |
5,000 |
|
TRICHLOROETHANE, 1,1,1- |
71-55-6 |
500 |
1,000 |
3,000 |
|
TRICHLOROETHANE, 1,1,2- |
79-00-5 |
40 |
200 |
500 |
|
TRICHLOROETHYLENE |
79-01-6 |
30 |
70 |
70 |
|
TRICHLOROPHENOL, 2,4,5- |
95-95-4 |
1,000 |
3,000 |
5,000 |
|
TRICHLOROPHENOL 2,4,6- |
88-06-2 |
30 |
400 |
400 |
|
VANADIUM |
7440-62-2 |
500 |
800 |
800 |
|
VINYL CHLORIDE |
75-01-4 |
0.3 |
10 |
100 |
|
XYLENES (Mixed Isomers) |
1330-20-7 |
500 |
1,000 |
3,000 |
|
ZINC |
7440-66-6 |
1,000 |
3,000 |
5,000 |
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NOTE: All concentrations of oil and/or hazardous material in soil are calculated and presented on a dry weight/dry weight basis. NA - Not Applicable * - The Total Chromium standard is applicable in the absence of species-specific data for Chromium III and Chromium VI. ** - Cyanide expressed as Physiologically Available Cyanide (PAC). In the absence of measured Physiologically Available Cyanide, the standard is applicable to Total Cyanide. *** - The listed compounds and associated CAS numbers are for the acid forms of these PFAS compounds. The information presented in Table 5 are also applicable to the respective anionic forms of these compounds. These anions may form salts with any of a number of cations resulting in a variety of possible chemical species, each having a unique CAS number. [DAGGER]- The Total Petroleum Hydrocarbon (TPH) standard may be used as an alternative to the appropriate combinations of the Aliphatic and Aromatic Hydrocarbon Fraction standards. The use of the general TPH standard is a valid option only for C9 and greater petroleum hydrocarbons; it is not appropriate for the characterization of risks associated with lighter (gasoline-range) hydrocarbons. [DOUBLE DAGGER]- The Department periodically reviews the scientific basis for these Standards and amends them, as appropriate, to incorporate new scientific information. |
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