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State groundwater standards for MTBE
State
Soil Action Level 1
Soil Cleanup Level 2
Soil/Drinking Water Level 3
Groundwater Action Level 1
Groundwater Cleanup Level 2
Groundwater/
Drinking Water Standard 4
AL Risk-based No
Risk-based No
AZ
none established 320 mg/kg-residential
none established none established none established
3300 mg/kg non-residential
CT
>2 mg/kg 2 mg/kg
>100 ug/l 100 ug/l 100 ug/l
FL
cleanup or monitoring or institutional controls are
required whenever cleanup levels are exceeded 350 ppm -direct exposure; 0.2
ppm-leachability cleanup or monitoring or
institutional controls are required whenever cleanup
levels are exceeded 35 ppb (ug/l) ID
Depends on pathway Depends on pathway
Depends on pathway
Depends on pathway 52, 261, 511 ppb depends
on use of groundwater
MA
RCS-1 0.3 mg/kg; RCS-2 200 mg/kg Method 1
Soil-1: GW-1: 0.3 ug/g, GW-2: 100 ug/g, GW-3: 100 ug/g
RCGW-1: 0.07 mg/l; RCGW-2: 50 mg/l Method 1
GW: GW:-1 70 ug/l, GW-2: 50,000 ug/l GW-3: 50,000 ug/l MD 50 ppb
Method 1 Soil-2: GW-1: 0.3 ug/g. GW-2: 200 ug/g,
GW-3: 200 ug/g
Method 1 Soil-3: GW-1: 0.3 ug/g. GW-2:
200 ug/g. GW-3: 200 ug/g
ME
variable depending on proximity of receptors TPH-5 ppm -
10,000 ppm variable depending on proximity
of receptors TPH-5 ppm - 10,000 ppm 50 ppb 25 ppb 25 ppb
50 ppb
MI
4800 ppb 4800 ppb
20 ppb 240 ppb 240 ppb
MO
60 ppm if soil is to be used as clean fill
60-280 ppm depending on matrix score
none 400 ppb for nonpotable none
40 ppb for potable
NC
920 ppb 920 ppb 200 ppb 200 ppb 200 ppb
NC
920 ppb 920 ppb 200 ppb 200 ppb
200 ppb
NH
100 ppb 100 ppb
NJ 70 ppb 70 ppb
70 ppb
NM
100 ppb
NY
50 ppb 50 ppb 50 ppb 50 ppb 50 ppb
50 ppb
OR 0.92 - 520 mg/kg
0.92 - 520 mg/kg 0.92 - 2.6 mg/kg 0.18 - 3000 mg/l
0.18 - 3000 mg/l 0.18 - 0.51 mg/l
PA NA
0.28 mg/kg 0.28 mg/kg NA 20 ug/l 20 ug/l
RI 20 ug/l 40 ug/l
20 ug/l
SC
40 ug/l
SD NA
NA NA Non-detect
Non-detect NA
UT
>0.3 ppm 0.3 ppm >0.2 ppm 0.2 ppm
0.07 ppm
VT no no NA No 40 ug/l 40 ug/l
WI 12 ppb 12 ppb
60 ppb
WY >cleanup level 313 mg/kg NA >0.2 mg/l
0.2 mg/l 0.2 mg/l
LEGEND 1
Action Level: the level at which some type of remediation must be undertaken.
2
Cleanup Level: the level which remediation methods must achieve.
3
Some states base their soil cleanup levels on what will leach into drinking water.
4
Drinking Water Standard: the level that drinking water supplies must not exceed (primary, secondary, or advisory).
NA = not applicable RCGW = reportable
concentration in groundwater
RCS = reportable concentration in soil Responses were
not received from CA or IN. Other states not listed have
not yet established levels. Data collected by Denise
Leonard of the University of Massachusetts
(413-545-1239).
