10 CSR 20-6.070
Groundwater Heat Pump Operating Permits
PURPOSE: This rule sets forth the requirements and process of
application for operating permits and the terms and conditions
for the permits.
(1) Permits—General Information.
(A) All persons who build, erect, alter, replace, operate, use,
or maintain existing or proposed groundwater heat pump
injection/withdrawal wells that inject more than six hundred
thousand (600,000) British thermal units (BTUs) per hour (also
termed as fifty (50) tons of capacity) shall apply to the depart
ment for the permits required by Missouri Clean Water Law
and these regulations.
(B) The following are exempt from permit regulations:
1. Groundwater heat pump injection wells designed for
up to eight (8) single family residents where the combined
injection rate is less than six hundred thousand (600,000) BTUs
per hour;
2. All other groundwater heat pump injection wells that
have a combined injection rate of less than six hundred thou
sand (600,000) BTUs per hour unless there is a potable water
well, not owned by the owner of the heat pump, within one
thousand feet (1000') which uses the same aquifer, strata or
depth as a source;
3. Any sampling well constructed in conjunction with any
injection/withdrawal well; and
4. Heat pumps constructed in such a way so as to not uti
lize groundwater, such as lateral line systems.
(C) Nothing in these regulations shall prevent the depart
ment from taking action where the department finds that any
activity exempted under subsection (1)(B) causes pollution of
waters of the state, places, or permits to be placed, a water
contaminant in a place where it is reasonably certain to cause
pollution of any waters of the state or the activity otherwise
violates the Missouri Clean Water Law or these regulations.
(D) Drillers of injection/withdrawal wells shall comply with
10 CSR 23-5.060 Construction Standards for Open Loop Heat
Pump Systems That Use Groundwater and 10 CSR 23-3 Well
Construction Code.
(E) Within ninety (90) days of notification by the department,
owners or operators of injection wells exempted from the per
mit requirements of subsection (1)(B) are required to submit
completed injection well inventory information on forms sup
plied by the department.
(2) Application.
(A) An application for an original operating permit or renew
al of a former operating permit shall be made by letter for each
injection/withdrawal well and shall include each of the follow
ing. The application may be supplemented with copies of infor
mation submitted for other federal or state permits.
1. Appropriate application fee as listed in 10 CSR 20-6.011;
2. Name and address of the company(s), organization(s),
owner(s) or operator of the injection/withdrawal well;
3. Description of structure or process, or both, that will
utilize the injection/withdrawal well;
4. Estimated depth of well, aquifer to be used (or antici
pated aquifer), casing and related well construction data as
recommended by the office of the state geologist;
5. Exact location of the proposed injection withdrawal well
and any other wells that exist within two thousand feet (2000')
shown on a seven and one-half (7 1/2) minute United States
Geological Survey (USGS) topographic quadrangle map;
6. The depth of each well indicated on the map;
7. Maximum, minimum and average volume of water that
will be injected or withdrawn on a daily basis;
8. Maximum, minimum and average temperature differ
ential of injected/withdrawn water;
9. Computations showing how the temperature differen
tials were calculated;
10. General specifications of the installation including the
heat exchange unit, pump and other structures;
11. If the injection/withdrawal well is located within one
thousand feet (1000') of any potable water well, a registered
professional geologist’s or registered professional geologic en
gineer’s recommendation and justification on the number and
location of sampling wells if any are deemed necessary, and an
estimate of the effect, in degrees Fahrenheit (F°), on all wells
located within one thousand feet (1000'); and
12. A copy of the certified heat pump well drillers’ report
to the Department of Natural Resources’ Missouri Geological
Survey.
(B) All applications must be signed as follows:
1. For a corporation—by an officer of at least the level of
plant manager;
2. For a partnership or sole proprietorship—by a general
partner or the proprietor; or
3. For a municipal, state, federal or other public facility—
by either a principal executive officer or ranking public official
or his/her designee.
(C) All other reports required by the department shall be
signed by a person designated in subsection (2)(B) of this rule
or a duly authorized representative, where—
1. The representative so authorized is responsible for the
overall operation of the facility from which the injection/with
drawal occurs; and
2. The authorization is made in writing by a person desig
nated in subsection (2)(B) of this rule and is submitted to the
director.
(D) Any changes in the written authorization which occur
after the issuance of a permit shall be reported to the depart
ment by submitting a new written authorization which meets
the requirements of subsection (2)(C) of this rule.
(E) If an application is incomplete or otherwise deficient, the
applicant shall be notified of the deficiency and processing of
the application may be discontinued until the applicant has
corrected all deficiencies.
(F) Mail applications to Water Pollution Control Program, PO
Box 176, Jefferson City, MO 65102.
(3) Operating Permits.
(A) In order to obtain an operating permit for groundwater
heat pump injection/withdrawal wells, applications for an
operating permit shall be submitted to the department in ac
cordance with the timeframes listed in section 644.051, RSMo
and 10 CSR 20-6.010.
(B) Prior to issuance of an operating permit, the department
shall fulfill the public notice requirements as outlined in 10
CSR 20-6.020.
(4) Terms and Conditions of Permit.
(A) The following shall be incorporated as terms and condi
tions of all permits:
1. All injection/withdrawals shall be consistent with the
terms and conditions of the permit;
2. The permit may be modified or revoked after reasonable
notice for causes including, but not limited to:
A. A violation of any term or condition of the permit;
B. A misrepresentation or failure to disclose fully all rel
evant facts in obtaining a permit;
C. A change in the operation, size or capacity of the
permitted facility; or
D. An increase of more than ten degrees Fahrenheit
(10°F) in any nearby potable water well that was in existence
when the original operating permit was issued.
3. The injection/withdrawal permit may be issued for a
period up to five (5) years, in accordance with section 644.051,
RSMo and 10 CSR 20-6.010;
4. Permittees shall operate and maintain facilities to com
ply with the Missouri Clean Water Law, corresponding regula
tions and applicable permit conditions;
5. For the purpose of inspecting for compliance with the
Clean Water Law and these regulations, authorized represen
tatives of the department shall be allowed by the permittee,
upon presentation of credentials and at reasonable times, to—
A. Enter upon permittee’s premises in which a ground
water heat pump injection/withdrawal well is located or in
which any records are kept under terms and conditions of the
permit;
B. Have access to, or copy, any records kept under terms
and conditions of the permit;
C. Inspect any sampling wells, monitoring equipment or
method listed in the permit; and
D. Sample for permit compliance;
6. Facility expansions, production increases or process
modifications which will result in a new or substantially dif
ferent injection/withdrawal must be reported sixty (60) days
before the facility or process modification begins. Notification
may be accomplished by application for a new permit, or by
submission of notice to the department;
7. Copies of well location, driller’s logs, sample logs, cas
ing schedule, volume of water, temperature, water quality
and other information developed or determined for the com
pleted installation shall be sent to the Missouri Department of
Natural Resources (DNR), Water Pollution Control Program and
Missouri Geological Survey;
8. Measure and record maximum, minimum and average
water temperature monthly for each injection/withdrawal well
and each monitoring well;
9. Measure and record maximum, minimum and average
injection/withdrawal rates monthly;
10. Measure and record total dissolved solids monthly for
each injection/withdrawal well and each monitoring well; and
11. A yearly report to the Department of Natural Resources’
Water Protection Program and Missouri Geological Survey,
which contains the following information:
A. Volume of water withdrawn and injected;
B. Temperature records for each monitoring well; and
C. Copies of water quality analyses performed.
(5) Prohibitions.
(A) No permit shall be issued:
1. Where the terms and conditions of the permit do not
comply with applicable guidelines or requirements of the
Missouri Clean Water Law and corresponding regulations or
the Federal Clean Water Act and federal regulations;
2. Where the permit conditions do not ensure compliance
with the applicable water quality requirements of any other
affected states;
3. For the discharge of any pollutant, except thermal dis
charges; those pollutants contained in the withdrawal water
may be reinjected;
4. For the discharge of any radiological, chemical or bio
logical warfare agent or radioactive waste; and
5. For the construction or operation of a new injection/
withdrawal well which could degrade the usefulness of water
withdrawn from earlier permitted wells.
(6) Permits Transferable.
(A) Subject to section (3), an operating permit may be trans
ferred upon submission to the department of an application
to transfer signed by a new owner. Until, such time as the
permit is officially transferred, the original permittee remains
responsible for complying with the terms and conditions of the
existing permit.
(B) The department, within thirty (30) days of receipt of the
application, shall notify the new applicant of its intent to re
voke and reissue or transfer the permit.
AUTHORITY: section 644.026, RSMo 2016.* Original rule filed Nov.
10, 1980, effective April 11, 1981. Amended: Filed March 9, 1984,
effective Oct. 1, 1984. Amended: Filed March 1, 1996, effective Nov.
30, 1996. Amended: Filed June 13, 2018, effective Feb. 28, 2019.
*Original authority: 644.026, RSMo 1972, amended 1973, 1987, 1993, 1995, 2000, 2012,
2014.