Current through September 18, 2024
Authority: IC
13-14-8; IC
13-15-1-2;
IC
13-15-2-1;
IC
13-18-3-1; IC
13-18-4-1
Affected: IC
13-11-2; IC
13-13-5-1;
IC 13-18-2
Sec. 16.
(a) A
drinking water production well casing shall meet the following requirements:
(1) A steel or stainless steel casing is
required for the following:
(A) A community
public water system.
(B) A public
water system production well casing with an inside diameter greater than six
(6) inches.
(2) Steel or
stainless steel shall meet the following:
(A)
Schedule 40 if the casing is less than or equal to ten (10) inches in
diameter.
(B) Be at least three
hundred seventy-five thousandths (0.375) of an inch in thickness if the casing
is greater than ten (10) inches in diameter.
(3) Steel or stainless steel pipe used in a
well casing shall be joined by:
(A) threading
and the use of screwed couplings; or
(B) welding with full circumference
welds.
(4) A production
well not regulated under subdivision (1) may be equipped with a polyvinyl
chloride (PVC) well casing when all of the following are met:
(A) The production well is not located within
two hundred (200) feet of:
(i) stored or
staged petroleum products; or
(ii)
any known sources of volatile or semivolatile organic contaminants.
(B) The PVC casing is joined by
solvent welding or mechanical joints that use PVC locking strips and synthetic
watertight sealing gaskets.
(C) The
PVC well casing and joints meet the requirements of ANSI/ASTM F480-02 "Standard
Specification for Thermoplastic Well Casing Pipe and Couplings made in Standard
Dimension Ratios (SDR), SCH 40 and SCH 80"*.
(D) The minimum wall thickness of PVC casing
is at least the equivalent of SDR 21 according to ANSI/ASTM F480-02 for
"Standard Specification for Thermoplastic Well Casing Pipe and Couplings made
in Standard Dimension Ratios (SDR), SCH 40 and SCH 80"*.
(E) PVC casing shall be protected from damage
from collision in accordance with the following:
(i) Three (3) posts shall be placed in an
equilateral formation no more than twenty-four (24) inches in radius from the
outside edge of the casing.
(ii) The
posts specified in item (i) shall:
(AA) be
concrete-filled steel posts at least four (4) inches in diameter or hollow
steel at least twenty-five hundredths (0.25) of an inch in thickness;
and
(BB) extend at least three (3)
feet above grade and four (4) feet below grade.
(5) A permanent well
casing shall terminate as follows:
(A) At the
higher level of one (1) of the following:
(i)
At least eighteen (18) inches above finished grade.
(ii) At least thirty-six (36) inches above
the regulatory flood elevation if located in a designated flood hazard area
identified by the Federal Emergency Management Agency (FEMA).
(B) At least twelve (12) inches
above the pump house floor or concrete apron.
(b) The casing shall be vented to the
atmosphere with a vent that terminates in a downturned position at or above the
top of the casing or the pitless adapter unit. The vent shall have a minimum
one and one-half (11/2) inch diameter opening covered with a twenty-four
(24) mesh, noncorrodible screen.
(c) A production well shall meet the
following construction requirements:
(1) Have
a maximum deviation from plumb not in excess of two-thirds (b) of the inside
diameter of the well casing per one hundred (100) feet of well depth.
(2) Be aligned to permit proper operation of
the type of permanent pump intended for the well. Alignment shall be tested as
follows:
(A) By lowering into the well,
through its entire depth, a section of pipe forty (40) feet long or a dummy of
the same length.
(B) The pipe or
dummy used as specified by clause (A) shall be in accordance with the
following:
(i) One-half (1/2) inch less
in diameter than the inside diameter of the part of the casing or hole being
tested when the casing or hole diameter is ten (10) inches or less.
(ii) One (1) inch smaller than the inside
diameter when that part of the casing or hole being tested is greater than ten
(10) inches.
(C) An
alignment test shall not be required inside well screens.
(d) A production well completed in
an unconsolidated formation shall have screens installed and constructed of one
(1) of the following materials:
(1) Stainless
steel.
(2) PVC only if the casing
material is also PVC.
(e)
A production well casing shall be fitted to permit measurements of static and
pumping water levels.
(f) A
production well in an unconsolidated formation shall be packed with silica
gravel if it has artificial gravel wall filters.
(g) The well house floor shall be at least
six (6) inches above grade.
*This document is incorporated by reference. Notwithstanding
language to the contrary in the primarily incorporated documents, the versions
of all secondarily incorporated documents, which are those documents referred
to in the primarily incorporated documents, shall be the versions in effect on
the date of final adoption of this rule. Copies of this standard may be
obtained from the American Society for Testing and Materials, 1916 Race Street,
Philadelphia, Pennsylvania 19103 or from the Indiana Department of
Environmental Management, Office of Water Quality, Indiana Government
Center-North, 100 North Senate Avenue, Room N1255, Indianapolis, Indiana 46204.
