Current through Register Vol. 49, No. 13, September 23, 2024
Subpart 1.
General.
A licensee, registrant, or property owner or lessee for a
well constructed according to Minnesota Statutes, section
103I.205,
subdivision 4, paragraph (e), clause (1), must submit an accurate, verified,
legible written record of well or boring construction or sealing on forms
provided by the commissioner, or in a format approved by the commissioner,
containing the information in subparts 2 to 4 within 30 days after completion
of the work. A written construction record is not required for any well or
boring sealed within 30 days of the time construction began and for which a
sealing record is submitted.
A. A new
or amended record is required if a notification or permit is required under
parts 4725.1820 to 4725.1838.
B.
The licensee or registrant must furnish the owner or owner's agent one copy,
retain one copy, and submit the remaining copies to the commissioner, except
that where a local board of health has been delegated authority under Minnesota
Statutes, section
103I.111,
the remaining copies must be submitted to the delegated program.
C. A single record may be used to report more
than one temporary monitoring well, dewatering well, or environmental bore hole
if all the wells or borings on the record are located on a continuous parcel of
property, the well or boring depths do not vary by more than 25 feet, and the
wells or borings terminate in the same geologic formation. All wells or borings
must be of the same type. A map must be attached to the record containing
multiple wells or borings, showing all well or boring unique numbers and
locations with distances and directions in relation to recognizable
landmarks.
D. All depth
measurements must be reported from the established ground surface.
Subp. 2.
Construction
records.
Construction records for wells and borings must be completed
on a form provided by the commissioner and must contain the information in
subpart 3, items A to F, and the following information:
A. intended use;
B. depth;
C. drilling method;
D. casing material, diameter, and
depth;
E. bore hole diameters and
depths;
F. gravel pack and screen
type and depth interval, or open hole interval;
G. static water level;
H. type, amount, and intervals of grout or
sealing materials;
I. wellhead
description including pitless adapter manufacturer and model if installed, and
type of casing protection if installed;
J. date of completion;
K. pump and pumping equipment
description;
L. description of the
geological materials penetrated by the well or boring using terms in subpart
4;
M. hydrofractured interval if
hydrofractured;
N. drilling fluid
used; and
O. for bored geothermal
heat exchangers, the following additional information must be provided either
on the commissioner's form or on an accompanying document:
(1) the location where each pipe loop enters
the drilled hole must be shown on a scaled map with angles and directions from
surveyed property corners, a permanent benchmark, or the corner of a permanent
structure;
(2) for bored geothermal
heat exchanger piping installed using directional drilling technology, a scaled
map showing the location of the entire length of each pipe loop and a
cross-sectional profile showing the depth profile of the pipe loops;
(3) GPS coordinates for the location where
each pipe loop enters the drilled hole or GPS coordinates marking the corners
or perimeter of the loop field;
(4)
the number of pipe loops in each bore hole; and
(5) the results of the required pressure
test.
Subp.
3.
Sealing record.
A sealing record must be submitted for all wells and borings
sealed.
The sealing record must contain the following
information:
A. name and address of
the property owner, and the well owner if different;
B. name, license or registration number of
the contractor doing the work, name of the driller performing the work, and the
signature of the certified representative;
C. date work was completed;
D. the county, township, range, section and
three quartiles, and the property street address, if assigned, of the well or
boring;
E. a map showing the well
or boring location with distances and directions in relation to recognizable
landmarks;
F. for records submitted
under subpart 1, item C, the location data at the center of the project, the
number of wells or borings included on the record, and a sketch map showing the
location of each well or boring;
G.
a description of the geological materials penetrated by the well or boring or a
description of material penetrated by the nearest well or boring for which
records are available, using terms in subpart 4;
H. the original well or boring depth, if
known, and current well or boring depth;
I. the approximate date of
construction;
J. the grout or
sealing materials, quantities, and intervals;
K. the casing type, diameter, and depth if
present;
L. the screen or open hole
depth interval if present;
M. a
description of any obstruction or pump, if present;
N. the method of sealing the annular space
around the casing, if present; and
O. a description of the wellhead completion
before sealing was performed.
Subp.
4.
Geological materials.
The geological materials penetrated in drilling a well or
boring must be reported. The person completing the record must include the rock
and unconsolidated material types, color, and relative hardness. The grain size
must be reported for unconsolidated materials and may be based on field
observation without technical size measurement. Geological materials must be
described using the terms in items A and B, terms contained in the Dictionary
of Geological Terms, Third Revision, by the American Geological Institute, or
ASTM Standard D2487-00.
A.
Unconsolidated materials:
| Material |
Diameter |
Diameter |
Screen Slot No. |
|
Millimeters |
Inches |
From |
To |
| (1) Clay |
Up to 0.005 |
Up to 0.0002 |
- |
- |
| (2) Silt |
0.005-0.062 |
0.0002-0.0025 |
- |
- |
| (3) Fine Sand |
0.062-0.250 |
0.0025-0.0100 |
2 |
10 |
| (4) Medium Sand |
0.250-0.500 |
0.0100-0.0200 |
10 |
20 |
| (5) Coarse Sand |
0.500-1.000 |
0.0200-0.0400 |
20 |
40 |
| (6) Very Coarse Sand |
1.000-2.000 |
0.0400-0.0800 |
40 |
80 |
| (7) Fine Gravel |
2.000-4.000 |
0.0800-0.1600 |
80 |
160 |
| (8) Coarse Gravel |
4.000-62.500 |
0.1600-2.5000 |
160 and larger |
| (9) Cobbles |
62.500-250.000 |
2.5000-10.0000 |
- |
- |
B.
Rock:
(1) basalt, which is a very
fine-grained, dark igneous rock, commonly black, dark gray, or dark red-brown
in which the mineral grains cannot be distinguished with the unaided
eye;
(2) carbonate rock, which is a
sedimentary rock consisting of limestone and dolomite or dolostone;
(3) dolomite or dolostone, which is a
sedimentary rock composed primarily of the mineral dolomite (calcium-magnesium
carbonate), which effervesces weakly in dilute hydrochloric acid;
(4) gabbro, which is a dark-colored, basic
intrusive igneous rock comprised principally of basic plagioclase (commonly
labradorite or bytownite) and clinopyroxene (augite);
(5) gneiss, which is a foliated rock formed
by regional metamorphism, in which bands or lenticles of granular minerals
alternate with bands or lenticles in which minerals having flaky or elongate
prismatic habits predominate;
(6)
granite, which is a plutonic rock in which quartz constitutes ten to 50 percent
of the felsic components and in which the alkali feldspar/total feldspar ratio
is generally restricted to the range of 65 to 90 percent;
(7) iron formation, which is a chemical
sedimentary rock, typically thin bedded and/or finely laminated, containing at
least 15 percent iron of sedimentary origin, and commonly but not necessarily
containing layers of chert;
(8)
limestone, which is a sedimentary rock composed primarily of the mineral
calcite (calcium carbonate), which effervesces freely in dilute hydrochloric
acid;
(9) metavolcanic (rock),
which is a volcanic rock that shows evidence of having been subjected to
metamorphism;
(10) quartzite, which
is a very hard sandstone, consisting chiefly of quartz grains that have been so
completely and solidly cemented with secondary silica that the rock breaks
across or through the grains rather than around them, or a granoblastic
metamorphic rock consisting mainly of quartz, which is formed by
recrystallization of sandstone or chert by metamorphism;
(11) sandstone, which is a sedimentary rock
consisting of cemented or otherwise compacted sediment composed predominantly
of sand-sized particles generally of quartz;
(12) schist, which is a strongly foliated
crystalline rock, formed by dynamic metamorphism, that can be readily split
into thin flakes or slabs due to the well-developed parallelism of more than 50
percent of the minerals;
(13)
shale, which is a sedimentary rock consisting of compacted or cemented silt and
clay;
(14) slate, which is a
fine-grained, hard, dark-colored metamorphic rock derived from shale, which
typically is gray and which splits readily into flat pieces; and
(15) volcanic (rock), which is a generally
finely crystalline or glassy igneous rock resulting from volcanic action at or
near the earth's surface.
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;
144.05;
144.12;
144.383;
157.04; 157.08; 157.09; 157.13
