310 CMR, § 40.0974

Current through Register 1536, December 6, 2024

Section 40.0974 - Identification of Applicable Groundwater Standards in Method 1

(1) The groundwater categories (GW-1, GW-2 and/or GW-3) identified for the disposal site per 310 CMR 40.0932 shall determine which column(s) of numerical standards listed in Table 1 are applicable to the groundwater. If multiple categories apply to the groundwater at the disposal site, the lowest of the applicable MCP Method 1 Groundwater Standards shall be used to characterize the risk of harm posed by the oil and/or hazardous material at the disposal site. The applicability of groundwater standards is independent of the classification of the soil at the disposal site.

(2)Table 1 Lists the Potentially Applicable MCP Method 1 Groundwater Standards.

310 CMR 40.0974(2): TABLE 1 [DOUBLE DAGGER] MCP Method 1 GROUNDWATER STANDARDS APPLICABLE IN AREAS WHERE THE GROUNDWATER IS CONSIDERED TO BE ONE OR MORE OF THE FOLLOWING CATEGORIES PER 310 CMR 40.0932
Oil and/or Hazardous Material	CAS Number	GW-1 Standard gg/liter (ppb)	GW-2 Standard gg/liter (ppb)	GW-3 Standard gg/liter (ppb)
ACENAPHTHENE	83-32-9	20	NA	10,000
ACENAPHTHYLENE	208-96-8	40	10,000	40
ACETONE	67-64-1	6,300	50,000	50,000
ALDRIN	309-00-2	0.5	2	30
ALIPHATIC HYDROCARBONS (See Petroleum Hydrocarbons)
ANTHRACENE	120-12-7	100	NA	30
ANTIMONY	7440-36-0	6	NA	8,000
AROMATIC HYDROCARBONS (See Petroleum Hydrocarbons)
ARSENIC	7440-38-2	10	NA	900
BARIUM	7440-39-3	2,000	NA	50,000
BENZENE	71-43-2	5	1,000	10,000
BENZO(a)ANTHRACENE	56-55-3	1	NA	1,000
BENZO(a)PYRENE	50-32-8	0.2	NA	500
BENZO(b)FLUORANTHENE	205-99-2	1	NA	400
BENZO(g,h,i)PERYLENE	191-24-2	50	NA	20
BENZO(k)FLUORANTHENE	207-08-9	1	NA	100
BERYLLIUM	7440-41-7	4	NA	200
BIPHENYL, 1,1-	92-52-4	2	200	50,000
BIS(2-CHLOROETHYL)ETHER	111-44-4	30	30	50,000
BIS(2-CHLOROISOPROPYL)ETHER	108-60-1	30	100	50,000
BIS(2-ETHYLHEXYL)PHTHALATE	117-81-7	6	NA	50,000
BROMODICHLOROMETHANE	75-27-4	3	6	50,000
BROMOFORM	75-25-2	4	700	50,000
BROMOMETHANE	74-83-9	10	7	800
CADMIUM	7440-43-9	5	NA	8
CARBON TETRACHLORIDE	56-23-5	5	2	5,000
CHLORDANE	12789-03-6	2	NA	2
CHLOROANILINE, p-	106-47-8	20	30,000	300
CHLOROBENZENE	108-90-7	100	200	1,000
CHLOROFORM	67-66-3	70	50	20,000
CHLOROPHENOL, 2-	95-57-8	10	20,000	7,000
CHROMIUM (TOTAL) *	7440-47-3	100	NA	300
CHROMIUM(III)	16065-83-1	100	NA	600
CHROMIUM(VI)	18540-29-9	100	NA	300
CHRYSENE	218-01-9	2	NA	70
CYANIDE **	57-12-5	200	NA	30
DIBENZO(a,h)ANTHRACENE	53-70-3	0.5	NA	40
DIBROMOCHLOROMETHANE	124-48-1	2	20	50,000
DICHLOROBENZENE, 1,2- (o-DCB)	95-50-1	600	8,000	2,000
DICHLOROBENZENE, 1,3- (m-DCB)	541-73-1	100	6,000	50,000
DICHLOROBENZENE, 1,4- (p-DCB)	106-46-7	5	60	8,000
DICHLOROBENZIDINE, 3,3'-	91-94-1	80	NA	2,000
DICHLORODIPHENYL DICHLOROETHANE, P,P'- (DDD)	72-54-8	0.2	NA	50
DICHLORODIPHENYL DICHLOROETHYLENE,P,P'- (DDE)	72-55-9	0.05	NA	400
DICHLORODIPHENYL TRICHLOROETHANE, P,P'- (DDT)	50-29-3	0.3	NA	1
DICHLOROETHANE, 1,1-	75-34-3	70	2,000	20,000
DICHLOROETHANE, 1,2-	107-06-2	5	5	20,000
DICHLOROETHYLENE, 1,1-	75-35-4	7	80	30,000
DICHLOROETHYLENE, CIS-1,2-	156-59-2	70	20	50,000
DICHLOROETHYLENE, TRANS-1,2-	156-60-5	100	90	50,000
DICHLOROMETHANE	75-09-2	5	2,000	50,000
DICHLOROPHENOL, 2,4-	120-83-2	10	30,000	2,000
DICHLOROPROPANE, 1,2-	78-87-5	5	3	50,000
DICHLOROPROPENE, 1,3-	542-75-6	0.4	10	200
DIELDRIN	60-57-1	0.1	8	0.5
DIETHYL PHTHALATE	84-66-2	2,000	50,000	9,000
DIMETHYL PHTHALATE	131-11-3	300	50,000	50,000
DIMETHYLPHENOL, 2,4-	105-67-9	60	40,000	50,000
DINITROPHENOL, 2,4-	51-28-5	200	50,000	20,000
DINITROTOLUENE, 2,4-	121-14-2	30	20,000	50,000
DIOXANE, 1,4-	123-91-1	0.3	5,000	50,000
ENDOSULFAN	115-29-7	10	NA	2
ENDRIN	72-20-8	2	NA	5
ETHYLBENZENE	100-41-4	700	20,000	5,000
ETHYLENE DIBROMIDE	106-93-4	0.02	2	50,000
FLUORANTHENE	206-44-0	90	NA	200
FLUORENE	86-73-7	40	NA	40
HEPTACHLOR	76-44-8	0.4	2	1
HEPTACHLOR EPOXIDE	1024-57-3	0.2	7	2
HEXACHLOROBENZENE	118-74-1	1	1	6,000
HEXACHLOROBUTADIENE	87-68-3	0.6	50	3,000
HEXACHLOROCYCLOHEXANE, GAMMA (gamma-HCH)	58-89-9	0.2	200	4
HEXACHLOROETHANE	67-72-1	8	100	50,000
HMX	2691-41-0	200	50,000	50,000
INDENO(1,2,3-cd)PYRENE	193-39-5	0.5	NA	100
LEAD	7439-92-1	15	NA	10
MERCURY	7439-97-6	2	NA	20
METHOXYCHLOR	72-43-5	40	NA	10
METHYL ETHYL KETONE	78-93-3	4,000	50,000	50,000
METHYL ISOBUTYL KETONE	108-10-1	350	50,000	50,000
METHYL MERCURY	22967-92-6	0.3	NA	20
METHYL TERT BUTYL ETHER	1634-04-4	70	50,000	50,000
METHYLNAPHTHALENE, 2-	91-57-6	10	2,000	20,000
NAPHTHALENE	91-20-3	140	700	20,000
NICKEL	7440-02-0	100	NA	200
PENTACHLOROPHENOL	87-86-5	1	NA	200
PER- AND POLYFLUOROALKYL SUBSTANCES (PFAS) ***	-	0.02	NA	-
PERFLUORODECANOIC ACID (PFDA)	335-76-2	See PFAS	NA	40,000
PERFLUOROHEPTANOIC ACID (PFHpA)	375-85-9	See PFAS	NA	40,000
PERFLUOROHEXANESULFONIC ACID (PFHxS)	355-46-4	See PFAS	NA	500
PERFLUORONONANOIC ACID (PFNA)	375-95-1	See PFAS	NA	40,000
PERFLUOROOCTANESULFONIC ACID (PFOS)	1763-23-1	See PFAS	NA	500
PERFLUOROOCTANOIC ACID (PFOA)	335-67-1	See PFAS	NA	40,000
PERCHLORATE	-	2	NA	1,000
PETROLEUM HYDROCARBONS
TOTAL PETROLEUM HYDROCARBON [DAGGER]	NA	200	5,000	5,000
ALIPHATIC HYDROCARBONS
C5 through C8 Aliphatic Hydrocarbons	NA	300	3,000	50,000
C9 through C12 Aliphatic Hydrocarbons	NA	700	5,000	50,000
C9 through C18 Aliphatic Hydrocarbons	NA	700	5,000	50,000
C19 through C36 Aliphatic Hydrocarbons	NA	14,000	NA	50,000
AROMATIC HYDROCARBONS
C9 through C10 Aromatic Hydrocarbons	NA	200	4,000	50,000
C11 through C22 Aromatic Hydrocarbons	NA	200	50,000	5,000
PHENANTHRENE	85-01-8	50	NA	10,000
PHENOL	108-95-2	900	50,000	2,000
POLYCHLORINATED BIPHENYLS (PCBs)	1336-36-3	0.5	5	10
PYRENE	129-00-0	70	NA	20
RDX	121-82-4	1	50,000	50,000
SELENIUM	7782-49-2	50	NA	50
SILVER	7440-22-4	100	NA	7
STYRENE	100-42-5	100	100	6,000
TETRACHLORODIBENZO-p-DIOXIN (TCDD), 2,3,7,8-(equivalents)	1746-01-6	3.E-05	NA	4.E-02
TETRACHLOROETHANE, 1,1,1,2-	630-20-6	5	10	50,000
TETRACHLOROETHANE, 1,1,2,2-	79-34-5	2	9	50,000
TETRACHLOROETHYLENE	127-18-4	5	20	30,000
THALLIUM	7440-28-0	2	NA	3,000
TOLUENE	108-88-3	1,000	50,000	40,000
TRICHLOROBENZENE, 1,2,4-	120-82-1	70	200	50,000
TRICHLOROETHANE, 1,1,1-	71-55-6	200	4,000	20,000
TRICHLOROETHANE, 1,1,2-	79-00-5	5	900	50,000
TRICHLOROETHYLENE	79-01-6	5	5	5,000
TRICHLOROPHENOL, 2,4,5-	95-95-4	200	50,000	3,000
TRICHLOROPHENOL 2,4,6-	88-06-2	10	5,000	500
VANADIUM	7440-62-2	30	NA	4,000
VINYL CHLORIDE	75-01-4	2	2	50,000
XYLENES (Mixed Isomers)	1330-20-7	10,000	3,000	5,000
ZINC	7440-66-6	5,000	NA	900
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 Per- and Polyfluoroalkyl Substances (PFAS) standard for GW-1 is for the sum of the concentrations of the following PFAS compounds: perfluorodecanoic acid (PFDA), perfluoroheptanoic acid (PFHpA), perfluorohexanesulfonic acid (PFHxS), perfluorononanoic acid (PFNA), perfluorooctanesulfonic acid (PFOS), and perfluorooctanoic acid (PFOA). The listed PFAS compounds and associated CAS numbers are the acid forms of these PFAS compounds. The PFAS standards presented in Table 1 also apply to the respective anionic forms of these PFAS 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 (gasolinerange) hydrocarbons. [DOUBLE DAGGER]The Department periodically reviews the scientific basis for these Standards and amends them, as appropriate, to incorporate new scientific information.