Current through Register Vol. 49, No. 13, September 23, 2024
Subpart
1.
Scope.
This part applies to hydrofracturing a water-supply well, as
defined in part 4725.0100, subpart 30f. A remedial water-supply well, or other
well or boring regulated by this chapter, must not be hydrofractured.
Hydrofracturing must be done by a well contractor licensed according to
Minnesota Statutes, section
103I.525.
Subp. 2.
Injection
materials, water, and proppants.
A.
Water used for hydrofracturing must be potable water containing a chlorine
residual. The use of surface water, unless obtained from a public water system,
is prohibited.
B. Additives must
meet the requirements of ANSI/NSF Standard 60-2016 as determined by a person
accredited by ANSI.
C. Proppants
may be used to hold the joints and fractures open, and must be inert, clean,
and nontoxic materials, including chlorinated, noncalcareous, washed
sand.
Subp. 3.
Restrictions.
The following restrictions apply when hydrofracturing.
A. The upper packer must be a minimum of 50
feet below the established ground surface.
B. Hydrofracturing must not occur inside a
casing. The upper packer must be a minimum of ten feet below the lower
termination of a casing.
C.
Hydrofracturing must only be done in igneous or metamorphic bedrock.
D. A water-supply well must not be
hydrofractured unless located according to the isolation distances in parts
4725.4350 and 4725.4450.
Subp.
4.
Requirements.
The following requirements apply when hydrofracturing. The
person hydrofracturing must:
A. remove
additives injected during hydrofracturing;
B. disinfect a hydrofractured water-supply
well upon completion of hydrofracturing, according to part 4725.5550;
C. collect a water sample from a
hydrofractured water-supply well used for drinking or other potable purposes,
and test the sample according to part 4725.5650; and
D. complete and submit a well and boring
construction record, or amended record, within 30 days of completion of
hydrofracturing.
Statutory Authority: MS s
103I.101;
103I.111;
103I.205;
103I.221;
103I.301;
103I.401;
103I.451;
103I.501;
103I.525;
103I.531;
103I.535;
103I.541;
103I.621
