Soil - MT

Montana Cleanup Standards for Hydrocarbon Contaminated Soil

TIER1 - SURFACE SOIL (0-2ft) RBSLs (mg/kg)
(includes default RBSLs)

This table applies to contaminant surface soil from 0-2 feet below ground surface. Default RBSLs used to determine if a release ahs occurred at a site are provided in bold and shaded. Default RBSLs apply to the entire soils column and always apply in the absence of adequate information. Distance to water is from the sample depth to the water table.

Distance to Groundwater		<10 feet to Groundwater				10-20 feet to Groundwater				>20 feet to Groundwater
Chemical	E	Residential	B	Commercial	B	Residential	B	Commercial	B	Residential	B	Commercial	B
For Gasoline and Light Hydrocarbons measured using Massachusetts Method for Volatile Petroleum Hydrocarbons (VPH)
C5-C8 aliphatic	n	13	dc	50	dc	13	dc	50	dc	13	dc	50	dc
C9-C12 aliphatic	n	100	bu	500	bu	100	bu	500	bu	100	bu	500	bu
C9-C10 aromatic	n	15	l	15	l	32	dc	50	l	32	dc	70	l
MTBE	n	0.1	l	0.1	l	0.2	l	0.2	l	0.3	l	0.3	l
Benzene	c	0.05	l	0.05	l	0.1	l	0.1	l	0.02	l	0.02	l
Toluene	n	14	l	14	l	41	l	41	l	63	l	63	l
Ethylbenzene	n	13	l	13	l	40	l	40	l	62	l	62	l
Xylenes	n	220	l	220	l	680	l	680	l	1000	l	1000	l
Naphthalene	n	3	l	3	l	9	l	9	l	13	l	13	l
For Diesel and Heavy Hydrocarbons measured using Massachusetts Method for Extractable Petroleum Hydrocarbons (EPH)
C9-C18 aliphatic	n	1000	bu	2500	bu	1000	bu	2500	bu	1000	bu	2500	bu
C19-C36 aliphatic	n	2500	bu	5000	bu	2500	bu	5000	bu	2500	bu	5000	bu
C11-C22 aromatic	n	120	dc	400	dc	120	dc	750	dc	120	dc	750	dc
Acenaphthene	n	160	l	160	l	530	l	530	l	590	dc	810	l
Anthracene	n	2900	dc	3700	l	2900	dc	13000	l	2900	dc	19000	l
Benz(a)anthracene	c	0.8	dc	6	dc	0.8	dc	6	dc	0.8	dc	6	dc
Benzo(a)pyrene	c	0.08	dc	0.6	dc	0.08	dc	0.6	dc	0.08	dc	0.6	dc
Benzo(b)fluoranthene	c	0.8	dc	6	dc	0.8	dc	6	dc	0.8	dc	6	dc
Benzo(k)fluoranthene	c	8	dc	60	dc	8	dc	60	dc	8	dc	60	dc
Chrysene	c	80	dc	630	dc	80	dc	630	dc	80	dc	630	dc
Dibenzo(a)anthracene	c	0.08	dc	0.6	dc	0.08	dc	0.6	dc	0.08	dc	0.6	dc
Fluoranthene	n	390	dc	1000	l	390	dc	3500	l	390	dc	5400	l
Fluorene	n	160	l	160	l	390	dc	550	l	390	dc	850	l
Indeno(1,2,3-cd)pyrene	c	0.8	dc	6	dc	0.8	dc	6	dc	0.8	dc	6