N.H. Code Admin. R. Env-Or 606.19 – Soil Remediation Criteria

(a) Soil remediation standards shall apply to all contaminated soil resulting from a discharge except as provided for in (c) through (f), below.
(b) Soil remediation standards shall be as set forth in Table 600-2 below:
Table 600-2
SOIL REMEDIATION STANDARDS
Chemical Name
CAS No.
Concentration
(mg/kg)
Acenaphthene
83-32-9
340
Acenaphthylene
208-96-8
490
Acetone
67-64-1
75
Acrylonitrile
107-13-1
0.5
Alachor
15972-60-8
0.2
Aldicarb
116-06-3
0.1
Aldicarb sulfone
1646-88-4
0.1
Aldicarb sulfoxide
1646-87-3
0.2
Aldrin
309-00-2
0.09
Allyl chloride
107-05-1
1
Anthracene
120-12-7
1,000
Antimony
7440-36-0
9
Arsenic
7440-38-2
11
Atrazine
1912-24-9
0.09
Barium
7440-39-3
1000
Benzene
71-43-2
0.3
Benzidine
92-87-5
0.01
Benzo(a)anthracene
56-55-3
1
Benzo(a)pyrene
50-32-8
0.7
Benzo(b)fluoranthene
205-99-2
1
Benzoic acid
65-85-0
350
Benzo(k)fluoranthene
207-08-9
12
Beryllium
7440-41-7
12
Biphenyl, 1,1-
92-52-4
125
Bis (2Chloroisopropyl) ether
108-60-1
5
Bis (Chloroethyl) ether
111-44-4
0.7
Bisphenol A
80-05-7
1,300
Boron
7440-42-8
1,000
Bromodichloromethane
75-27-4
0.1
Bromoform
75-25-2
0.1
Bromomethane
74-83-9
0.3
Butylbenzene, n-
104-51-8
110
Butylbenzene, sec-
135-98-8
130
Butylbenzene, tert-
98-06-6
100
Cadmium
7440-43-9
33
Carbofuran
1563-66-2
0.6
Carbon disulfide
75-15-0
460
Carbon tetrachloride
56-23-5
12
Chlordane
57-74-9
4
Chloroaniline, p-
106-47-8
1.3
Chloromethane
74-87-3
3
Chlorophenol, 2-
95-57-8
2
Chlorotoluene, 2 (o)
95-49-8
15
Chlorotoluene, 4 (p)
106-43-4
680
Chromium (III)
16065-83-1
1,000
Chromium (VI)
18540-29-9
130
Chrysene
218-01-9
120
Cyanazine
21725-46-2
0.03
Cyanide
57-12-5
22
2,4-D (Dichlorophenooxy acetic acid, 2,4-)
94-75-7
300
Dalapon
75-99-0
3
DDD (Dichlorodiphenyl dichloroethane, p,p’)
72-54-8
6
DDE (Dichlorodiphenyl dichloroethylene, p,p’)
72-55-9
4
DDT (Dichlorodiphenyl trichloroethane, p,p’)
50-29-3
4
Dibenzo(a,h)anthracene
53-70-3
0.7
Dibromochloromethane
124-48-1
1
Dibromochloropropane
96-12-8
0.1
Dibutylphthalate
84-74-2
2,600
Dichlorobenzene, 1,2- (o-DCB)
95-50-1
88
Dichlorobenzene, 1,3- (m-DCB)
541-73-1
150
Dichlorobenzene, 1,4- (p-DCB)
106-46-7
7
Dichlorobenzidine, 3,3’-
91-94-1
0.7
Dichlorodifluoromethane
75-71-8
1,000
Dichloroethane, 1,1-
75-34-3
3
Dichloroethane, 1,2-
107-06-2
0.1
Dichloroethylene, 1,1-
75-35-4
14
Dichloroethylene, cis-1,2-
156-59-2
2
Dichloroethylene, trans-1,2-
156-60-5
9
Dichloromethane (Methylene chloride)
75-09-2
0.1
Dichlorophenol, 2,4-
120-83-2
0.7
Dichloropropane, 1,2-
78-87-5
0.1
Dichloropropene, 1,3-
542-75-6
0.1
Dieldrin
60-57-1
0.06
Diethyl ether
60-29-7
3900
Diethyl phthalate
84-66-2
1,000
Di-(2-ethylhexyl)phthalate (DEHP)
117-81-7
72
Diisopropyl ether (DIPE)
108-20-3
10
Dimethyl phthalate
131-11-3
700
Dimethylphenol, 2,4-
105-67-9
4
Dinitrophenol, 2,4-
51-28-5
0.7
Dinitrotoluene, 2,4-
121-14-2
0.7
Dinoseb
88-85-7
1
Dioxane, 1,4-
123-91-1
5
Dioxin (2,3,7,8-TCDD equivalents)
1746-01-6
0.001
Diphenylhydrazine, 1,2-
122-66-7
1
Diquat (dibromide)
85-00-7
0.3
Endosulfan
115-29-7
45
Endothall
145-73-3
1
Endrin
72-20-8
8
Ethyl tert butyl ether (ETBE)
637-92-3
0.7
Ethylbenzene
100-41-4
120
Ethylene dibromide
106-93-4
0.1
Ethylene glycol
107-21-1
91
Fluoranthene
206-44-0
960
Fluorene
86-73-7
77
Fluoride
7782-41-4
2200
Formaldehyde
50-00-0
1
Heptachlor
76-44-8
0.2
Heptachlor epoxide
1024-57-3
0.1
Hexachlorobenzene
118-74-1
0.8
Hexachlorobutadiene
87-68-3
17
Hexachlorocyclohexane, alpha
319-84-6
0.06
Hexachlorocyclohexane, beta
319-85-7
0.06
Hexachlorocyclohexane, gamma
58-89-9
0.09
Hexachlorocyclopentadiene
77-47-4
200
Hexachloroethane
67-72-1
0.7
Indeno(1,2,3-cd)pyrene
193-39-5
1
Isophorone
78-59-1
1
Isopropyl benzene
98-82-8
330
Lead
7439-92-1
200
Manganese
7439-96-5
1,000
MCPA (2-Methyl-4-chlorophenoxyacetic acid)
94-74-6
13
MCPP (2-(2- Methyl-4-chlorophenoxy) propionic acid)
93-65-2
26
Mercury (inorganic)
7439-97-6
7
Methanol
67-56-1
50
Methoxychlor
72-43-5
130
Methyl ethyl ketone (MEK)
78-93-3
51
Methyl isobutyl ketone (MIBK)
108-10-1
29
Methyl mercury
22967-92-6
3
Methylnaphthalene, 2-
91-57-6
96
Methyl phenol, 2-
95-48-7
0.9
Methyl phenol, 4-
106-44-5
0.7
Methyl tert butyl ether (MTBE)
1634-04-4
0.2
Metolachlor
51218-45-2
3
Metribuzin
21087-64-9
5
Monochlorobenzene
108-90-7
6
Naphthalene
91-20-3
28
Nickel
7440-02-0
400
Oxamyl
23135-22-0
2
Pentachlorophenol
87-86-5
3
Perfluorooctanoic acid (PFOA), total of all isomers
335-67-1
0.0004
Perfluorooctane sulfonic acid (PFOS), total of all isomers
1763-23-1
0.0005
Perfluorohexane sulfonic acid (PFHxS), total of all isomers
355-46-4
0.0004
Perfluorononanoic acid (PFNA), total of all isomers
375-95-1
0.0013
Phenol
108-95-2
56
Picloram
1918-02-1
6
Polychlorinated Biphenyls (PCBs)
1336-36-3
1
Propyl benzene, n-
103-65-1
85
Pyrene
129-00-0
720
Selenium
7782-49-2
180
Silver
7440-22-4
89
Simazine
122-34-9
0.4
Styrene
100-42-5
17
Tertiary amyl methyl ether (TAME)
994-05-8
3
Tertiary butyl alcohol (TBA)
75-65-0
2
Tetrachloroethane, 1,1,1,2-
630-20-6
0.8
Tetrachloroethane, 1,1,2,2,-
79-34-5
4
Tetrachloroethylene (PCE)
127-18-4
2
Tetrachlorophenol 2,3,4,6
58-90-2
130
Thallium
7440-28-0
10
Toluene
108-88-3
100
Total Petroleum Hydrocarbon, Gasoline Range Organics (GRO)
390*4,000**
Total Petroleum Hydrocarbon, Diesel Range Organics (DRO)
480*
4,200**
Toxaphene
8001-35-2
1
2,4,5-TP (Silvex)
93-72-1
60
Trichlorobenzene, 1,2,4-
120-82-1
19
Trichloroethane, 1,1,1-
71-55-6
78
Trichloroethane, 1,1,2-
79-00-5
0.1
Trichloroethylene (TCE)
79-01-6
0.8
Trichlorofluoromethane
75-69-4
1,000
Trichloromethane (Chloroform)
67-66-3
3
Trichlorophenol, 2,4,5-
95-95-4
24
Trichlorophenol, 2,4,6-
88-06-2
0.7
Trichloropropane, 1,2,3-
96-18-4
0.1
Trimethylbenzene, 1,2,4
95-63-6
130
Trimethylbenzene, 1,3,5
108-67-8
96
Vinyl chloride
75-01-4
1
Xylenes (mixed isomers)
1330-20-7
500
Zinc
7440-66-6
1,000
* For soil less than or equal to 2 feet from the ground surface.
** For soil greater than 2 feet from the ground surface.
(c) In lieu of the soil standards in Table 600-2, if approved by the department pursuant to (d) below, the responsible party may develop site-specific soil remediation standards by evaluating the risk to human health and the environment using the methods described in ASTM E2081-22, dated 2022, available as noted in Appendix B, as applicable.
(d) Site-specific soil standards developed pursuant to (c), above, shall:
1. (1) Demonstrate that leaching of contaminants to groundwater will not result in violations of ambient groundwater quality standards as specified in Env-Or 603.03;
2. (2) Demonstrate that no significant risk to human health and the environment exists at the site pursuant to the procedures prescribed in ASTM E2081-22, dated 2022, as applicable, as noted in (c), above; and
3. (3) In the evaluation of human health in (2), above, use a cumulative risk approach that compares site-specific information to a cumulative risk of an excess lifetime cancer risk of one in 100,000 and a cumulative non-cancer risk that is a hazard index equal to one pursuant to the procedures prescribed in ASTM E2081-22, dated 2022, as applicable, as noted in (c), above.
(e) In lieu of the soil standards in Table 600-2, the responsible party may use an activity and use restriction at a site where a department-approved remedial action relies on the restriction of site activities and uses to eliminate exposure pathways to achieve or maintain protection of human health and the environment pursuant to the procedures outlined in Env-Or 608.
(f) The soil standards in Table 600-2 shall not apply to soil contamination that has been demonstrated to be attributed to background as defined in Env-Or 602 and shall not apply where soil contamination is demonstrated to be at or below background levels.

Source. (See Revision Note at chapter heading for Env-Or 600) #8812, eff 2-1-07; amd by #9213, eff 7-23-08; ss by #10831, eff 6-1-15; ss by #14159, eff 12-25-24; ss by #14419, eff 11-4-25, EXPIRES: 11-4-35