Jump to main content.


Underground Injection Control Program Summary of Regional and State Implementation of the Area of Review

National UIC Technical Workgroup
Final Work Product #2

A Underground Injection Control Program Summary
of
Regional and State Implementation of the Area of Review

One of the topics which the EPA UIC Technical Workgroup determined important, during its initial development of issues upon which work, was the collection, summation and distribution of information regarding how EPA and State UIC programs implement the Area of Review concept. The attached table has been developed to show the various ways each of the EPA regions and states implement the Area of Review requirements as set forth in Section 146.6 of the UIC regulations.

The information in this table was obtained from a questionnaire which was sent out to each of the EPA regional UIC program offices, who in turn, sent it to their respective primacy states. The questionnaire can be found in Appendix A. The two columns of the table, under the heading "fixed radius", respond to Parts (a) and (c) of question one. The next two columns, under the heading "calculated approach", respond to Parts (a) and (c) of question two. The final three columns of the table respond to questions four, five and six, respectively.

If during your review of this table any inaccuracies become apparent, or if you desire more specific information on how the Area of Review is administered in a particular region or primacy state, please contact the respective UIC Technical Workgroup member who represents the region and/or state of interest. A list of Workgroup members is provided in Attachment B.

AREA OF REVIEW SUMMARY

Region/
State
Agency Well
Class
Fixed Radius Calculated approach Monitoring
Wells?
AOR
Inspec-
ted?
AOR on
Rule Auth
Wells?
Call-in?
Distance Verified
by
Calcu-
lation
Formula Used # times >
1/4 mile
II
  NY
USEPA IIR,IID 1/4 mi Yes "Rad. of Press."
+ Frac. Anlsys.0
9x Yes, DW
wells
No No
III
  PA/VA
USEPA IIR,IID 1/4 mi Yes, IID "Rad. of Press." Twice Sometimes Yes No
WV DOE IID 1/4 mi Yes "Rad. of Press",
Res. Eng. Mdl.
None Sometimes Yes Yes, Call-in
IV
  KY/TN
USEPA IIR,IID 1/4 mi No(a) "Rad. of Press." NA --- --- ---
MS MO&GB IIR,IID 1/4 mi Yes(b) "Rad. of Press." NA --- --- ---
AL AO&GB IIR,IID 1/4 mi No "Rad. Of Press." NA --- --- ---
FL USEPA IIR,IID 1/4 mi No "Rad. Of Press." NA --- --- ---
V
  MI
USEPA I 2 mi No Not Used NA No No No
USEPA IIR,IID
III,V
(deep)
1/4 mi No(c) Section 146.6 NA No No Yes, Call-in
IL IEPA I 2.5 mi Yes Section 146.6 None Yes No No
IDNR IIR,IID 1/4 mi No(c) Not Used NA No No No
IN USEPA I 2 mi No Not Used(1) NA Yes No No
IDNR IIR,IID 1/4 mi No(c) Not Used NA No No No
OH OEPA I 1/4 mi Yes See Attached
(2)
None Yes No No
ODNR IIR,IID 1/4 mi if
q<200
bbl/d/yr
 
1/2 mi if
q>200
bbl/d/yr
Yes See Attached
(3)
Distance
yields to
200
bbl/d/yr
rate
No Yes No
III 1/4 mi No None NA No Yes  
VI
  (Osage)
USEPA IIR,IID 1/4 mi Yes(d) "Rad. of Press." ? Few No No
OK/NM Tribal IIR,IID 1/2 mi Yes "Rad. of Press." ? Few No No
AR ADPC&E I NHAZ
I HAZ
1/2 mi
2 mi
Yes(e) Section 146.6 --- No No No
AOGC IIR,IID,
V
1/2 mi Yes Not Used --- No No Yes, Call-in
LA OC I 2 mi Some "Rad. of Press."(f) Rarely No No No
LDNR All
Others
1/4 mi No Not Used NA No No Yes, Call-in
NM NMED I,III,V 2.5 mi or
1/4 mi if
Calc=0
(g)
Some "Rad. of Press." Rarely Sometimes Some No
NMOCD IIR,IID
I NHAZ,
III
1/2 mi
 
1/4 mi
No
 
No
Not Used
 
Not Used
NA
 
NA
No
 
No
No
 
No
No
 
No
OK OCC IIR,IID 1/4 mi
(non-
com)
1/2 mi
for com.
Yes(h) "Rad.of
Press."(h)
? Sometimes No Yes, Call-in
ODEQ I,III,V NA NA Section 146.6 Most All No Yes Yes
TX RCC IIR,IID 1/4 mi No Applicants may
use "Rad. Of
Press." calc.
Rarely No No No
TNRCC I 2 1/2 mi Yes Section 146.6 2.5 mi
overrules
calc.
Very Few [3] Yes/IID No
III,V 1/4 mi No Not Used NA Class III No No
VII
  MO
MDNR IIR,IID 1/2 mi No Not Used NA No No No
KS KCC IIR,IID 1/4 mi Yes Section 146.6 Rarely Sometimes Yes Yes, Call-in
KDHE I,III,V 2.5 mi
(IH)
Yes Con of
Influence
None No Yes No
1 mi (I
non-haz)
Yes Cone of
Influence
3 times No No No
1/4 mi
(III,V)
No Not Use NA Class V
remediation/
Class III
sometimes
No No
NE NOGCC IIR,IID 1/2 mi
min
No Not Used NA Sometimes No Yes
DEQ I,III,V No (I) NA "Radius of
Press."
? Sometimes Some No
No (III) NA " ? Sometimes Some No
1000ft. -
1 mi (V)
Yes Not Used NA Sometimes Some No
VIII
  MT
USEPA IIR,IID 1/4 mi Yes "Rad.of Press." Once No No No
CO COGCC IIR,IID 1/4 mi Some Cylindric
Calc.(i)
None No No No
WY WOGCC IIR,IID 1/4mi Yes, IID ? None Yes, IIR No Yes, Call-in
UT   IIR,IID 1/2 mi No --- --- Sometimes --- ---
IX
  AZ
  III 1/4 mi Some Numeric Model
(j)
None Yes Yes Yes
CA   IIR,IID geology
depend.
No Not Used NA Sometimes No No
HI USEPA V 1/4 mi to
1/2 mi
No Concern is
Impact on Ocean
NA Yes No No
NV   II,III,V 1 mi No Will allow but
none submitted
NA For Class V Some No
Navajo USEPA IIR,IID,
III
1/2 mi Yes "Rad. of
Press."
(modified)
Rarely For Class III Some No
X
  AK
AOGCC IIR,IID 1/4mi No Utilize Fracture
Gradients
NA Sometimes No No

  1. Don't feel they have good data
  2. Shallow injectors
  3. Calculated to limits of endangerment if problem wells are present
  4. Not in fracture flow formations
  5. Select most conservative value
  6. Pc=0.433[(piz)(Diz-Dusdw)+(pUSDW)(Dusdw-BUSDW)]-Po
  7. New Mexico radius of pressure influence calculation
  8. Oklahoma radius of pressure influence calculation
  9. Uses formation thickness, porosity, rate, 15 year life
  10. Uses hydraulic conductivity, gradient, porosity, thickness, confined/unconfined, injection rate

  1. When the facility is injecting banned hazardous waste, the AOR is expanded to include the modeled plume boundary
  2. Ohio EPA's formula can be obtained from Region or State agency
  3. Ohio DNR's formula can be obtained from Region or State agency
Underground Injection Control Topics | Other Local Water Topics

Local Navigation


Jump to main content.