C.M.R. 06, 096, ch. 418, app 096-418-A - SCREENING LEVELS FOR BENEFICIAL USE (mg/kg, dry weight)

The values in Appendix A were derived using the standard risk assessment protocols of the U.S.E.P.A. Acceptable risk levels were set at one-half the risk standard used by the Department for clean up of sites contaminated with hazardous substances; that is, Appendix A levels are set at the risk standard of this rule. Appendix A screening levels are set at the lowest level for all the routes of exposure that most likely will drive the risk at beneficial use sites: incidental ingestion of the secondary material, skin contact with the secondary material, inhalation of the secondary material in dust or paper, or leaching of contaminants from the secondary material into groundwater and the subsequent ingestion of the groundwater. For the direct ingestion, contact, and inhalation routes of exposure, values were calculated using the methodology in U.S.E.P.A.'s Regional Screening Levels (RSLs) for Chemical Contaminants at Superfund Sites (June 2017). For the leaching to groundwater pathway, levels were calculated using the methodology in Appendix D of the Department's Remediation Guidelines for Petroleum Contaminated Sites in Maine (amended May 23, 2014). This methodology uses the SESOIL and AT123D models, and the 34 chemicals where this approach determined the screening level are marked by double asterisks in the line number column. The 5 hydrocarbon fractions marked by triple asterisks in the line number column were also based on the leaching to groundwater pathway.

Line No.	CAS No Dash	Chemical	Waste Concentration
1 **	630206	1, 1, 1, 2-Tetrachloroethane	0.041
2 **	71556	1, 1, 1-Trichloroethane	128
3 **	79345	1, 1, 2, 2-Tetrachloroethane	0.0046
4 **	79005	1, 1, 2-Trichloroethane	0.0023
5	92524	1, 1-Biphenyl	60
6 **	75343	1, 1-Dichloroethane	0.23
7 **	75354	1, 1-Dichloroethene	7.2
8	87616	1, 2, 3-Trichlorobenzene	73
9 **	120821	1, 2, 4-Trichlorobenzene	0.2
10	96128	1, 2-Dibromo-3-chloropropane	0.077
11 **	95501	1, 2-Dichlorobenzene	5.5
12 **	107062	1, 2-Dichloroethane	0.0088
13 **	156592	1, 2-Dichloroethene (cis)	0.28
14 **	156605	1, 2-Dichloroethene (trans)	4.5
15	78875	1, 2-Dichloropropane	104
16	528290	1, 2-Dinitrobenzene	7.4
17	106990	1, 3-Butadiene	2.3
18 **	541731	1, 3-Dichlorobenzene	0.045
19	142289	1, 3-Dichloropropane	1830
20	542756	1, 3-Dichloropropene	65
21	99650	1, 3-Dinitrobenzene	7.4
22 **	106467	1, 4-Dichlorobenzene	0.09
23	100254	1, 4-Dinitrobenzene	7.4
24	123911	1, 4-Dioxane	63
25	75683	1-Chloro-1, 1-difluoroethane	10000
26	93765	2, 4, 5-T	737
27	93721	2, 4, 5-TP	590
28	95954	2, 4, 5-Trichlorophenol	7370
29	88062	2, 4, 6-Trichlorophenol	74
30	118967	2, 4, 6-Trinitrotoluene	42
31	120832	2, 4-Dichlorophenol	221
32	105679	2, 4-Dimethylphenol	1470
33	51285	2, 4-Dinitrophenol	147
34	121142	2, 4-Dinitrotoluene	20
35	576261	2, 6-Dimethylphenol	44
36	606202	2, 6-Dinitrotoluene	4.2
37	95578	2-Chlorophenol	426
38	95487	2-Cresol	3690
39 **	91576	2-Methylnaphthalene	2.7
40	91941	3, 3-Dichlorobenzidine	14
41	108394	3-Cresol	3690
42	106478	4-Chloroaniline	32
43	106445	4-Cresol	2570
44 **	83329	Acenaphthene	78
45 **	208968	Acenaphthylene	74
46 **	67641	Acetone	47
47	75058	Acetonitrile	2290
48	107028	Acrolein	0.3
49	107131	Acrylonitrile	7
50	15972608	Alachlor	113
51	309002	Aldrin	0.46
52	107051	Allyl chloride	33
53	7429905	Aluminum	14400
54 **	120127	Anthracene	825
55	7440360	Antimony	37
56	12674112	Aroclor 1016	4.8
57	7440382	Arsenic	7.9
58	1912249	Atrazine	28
59	7440393	Barium	10000
60 **	71432	Benzene	0.029
61	56553	Benzo(a)anthracene	13
62	50328	Benzo(a)pyrene	1.3
63	205992	Benzo(b)fluoranthene	13
64	191242	Benzo(g, h, i)perylene	2090
65	207089	Benzo(k)fluoranthene	134
66	65850	Benzoic acid	6200
67	100447	Benzyl chloride	17
68	7440417	Beryllium	58
69	111444	Bis(2-chloroethyl)ether	2.83
70	117817	Bis(2-Ethylhexyl)phthalate	452
71	75274	Bromodichloromethane	28
72	75252	Bromoform	555
73	74839	Bromomethane	84
74	85687	Butyl benzyl phthalate	3330
75 ***	DEP2041	C11-C22 Aromatics	230
76	DEP2042	C19-C36 Aliphatics	10000
77 ***	DEP2038	C5-C8 Aliphatics	700
78 ***	DEP2040	C9-C10 Aromatics	37.5
79 ***	DEP2039	C9-C12 Aliphatics	1350
80 ***	DEP2043	C9-C18 Aliphatics	1350
81	7440439	Cadmium	22
82	86748	Carbazole	317
83	75150	Carbon disulfide	2010
84 **	56235	Carbon tetrachloride	0.096
85	57749	Chlordane	20
86 **	115286	Chlorendic acid	0.57
87 **	108907	Chlorobenzene	1.2
88	67663	Chloroform	47
89	74873	Chloromethane	4450
90	16065831	Chromium (+3)	10000
91	18540299	Chromium (+6)	3.6
92	218019	Chrysene101	1340
93	7440484	Cobalt	27
94	7440508	Copper	1700
95	57125	Cyanide	19
96	72548	DDD	26
97	72559	DDE	23
98	50293	DDT	22
99	53703	Dibenz(a, h)anthracene	1.3
100	132649	Dibenzofuran	85
101	124481	Dibromochloromethane	97
102	84742	Dibutyl phthalate	7370
103	75718	Dichlorodifluoromethane	2350
104	60571	Dieldrin	0.4
105	84662	Diethyl phthalate	10000
106	88857	Dinoseb	74
107	1746016	Dioxin-Like Compounds - TEQ	0.0000558
108	115297	Endosulfan	548
109	72208	Endrin	22
110	75003	Ethyl chloride	7370
111 **	100414	Ethylbenzene	0.22
112	106934	Ethylene dibromide	1.4
113	206440	Fluoranthene	2790
114 **	86737	Fluorene	75
115	76448	Heptachlor	1.6
116	1024573	Heptachlor epoxide	0.83
117	118741	Hexachlorobenzene	1.7
118	87683	Hexachlorobutadiene	38
119	319846	Hexachlorocyclohexane, alpha (alpha-BHC)	1
120	319857	Hexachlorocyclohexane, beta (beta-BHC)	3.5
121	58899	Hexachlorocyclohexane, gamma (Lindane)	1.5
122	67721	Hexachloroethane	61
123	121824	Hexahydro-1, 3, 5-trinitro-1, 3, 5-triazine (RDX)	71
124	193395	Indeno(1, 2, 3-cd)pyrene	13
125	7439896	Iron	63900
126	7439921	Lead	200
127	121755	Malathion	1470
128	7439965	Manganese	151
129	7487947	Mercuric chloride & other inorganic mercury compounds	27
130	72435	Methoxychlor	369
131	78933	Methyl ethyl ketone	5460
132	108101	Methyl isobutyl ketone	3740
133	80626	Methyl methacrylate	1950
134 **	1634044	Methyl tert-butyl ether	0.079
135	75092	Methylene chloride	538
136	7439987	Molybdenum	456
137 **	91203	Naphthalene	0.078
138	7440020	Nickel	530
139	106945	n-Propyl bromide	84
140	2691410	Octahydro-1, 3, 5, 7-tetranitro-1, 3, 5, 7-tetra (HMX)	4500
141	117840	Octyl Phthalate, di-n-	737
142	56382	Parathion	60
143	1336363	PCBs	2.7
144	87865	Pentachlorophenol	12
145	14797730	Perchlorate	65
146 **	375735	Perfluorobutane sulfonic acid (PFBS)	1.9
147 **	1763231	Perfluorooctane sulfonate (PFOS)	0.0052
148 **	335671	Perfluorooctanoic acid (PFOA)	0.0025
149 **	85018	Phenanthrene	83
150	108952	Phenol	10000
151	129000	Pyrene	2090
152	7782492	Selenium	456
153	7440224	Silver	456
154	100425	Styrene	9270
155 **	127184	Tetrachloroethene	0.76
156	298022	Thimet (Phorate)	15
157 **	108883	Toluene	10
158 **	79016	Trichloroethene	0.035
159	75694	Trichlorofluoromethane	3060
160	7440622	Vanadium	265
161	108054	Vinyl acetate	115
162	593602	Vinyl bromide	9.8
163 **	75014	Vinyl chloride	0.0053
164 **	1330207	Xylene	2.5
165	7440666	Zinc	10000

Notes

C.M.R. 06, 096, ch. 418, app 096-418-A