Current through Register Vol. 24-24, December 15, 2024
(1) A BAT shall
inspect, field test, maintain, and repair backflow prevention assemblies,
backflow prevention devices, and air gaps that protect the public water system
and report the results as required in WAC
246-290-490(7).
(2) A BAT must be equipped with and capable
of using a field test kit, all tools, and other equipment needed to inspect and
field test backflow prevention assemblies, and to inspect air gaps and
AVBs.
(3) When conducting
inspections and field tests of back-flow preventers, a BAT shall:
(a) Use procedures that:
(i) Meet the requirements in WAC
246-290-490(7)(d);
and
(ii) Are consistent with the
field test procedures used on the BAT's most recently passed practical
exam;
(b) Accurately
perform inspections and field tests;
(c) Record inspection and field test results
completely, accurately, and legibly on a backflow preventer inspection and
field test report that meets the requirements in WAC
246-292-036;
(d) Accurately interpret inspection results
and determine whether or not the backflow prevention assembly is properly
installed;
(e) Accurately interpret
the field test results and determine if a backflow prevention assembly passed
or failed the field test;
(f)
Accurately interpret air gap inspection results and determine if the air gap is
an approved air gap at the time of inspection; and
(g) Accurately interpret inspection results
and determine if an AVB is properly installed and operating properly.
(4) A BAT shall submit a completed
backflow preventer inspection and field test report in an original, copy,
facsimile, or electronic format to the owner of the backflow preventer and to
the purveyor.
(5) When field
testing a backflow prevention assembly, a BAT shall use a field test kit that
meets the criteria in Appendix A, Section A.7 of the Manual of
Cross-Connection Control, 10th Edition, published by the University of
Southern California, October 2009 (USC Manual).
(6) A BAT shall have the field test kit and
components:
(a) Evaluated for performance,
pressure-tested, and checked for accuracy:
(i) At least once within the twelve month
period before the inspection and field test date; and
(ii) By an independent laboratory that meets
criteria and uses procedures specified in Appendix A, Section A.7 of the
USC Manual.
(b) Recalibrated, repaired, or replaced, if
the pressure test or accuracy check results fail to meet the criteria in
Appendix A, Section A.7 of the USC Manual.
(7) A BAT shall submit to the
purveyor as required in WAC
246-290-490(3)(g):
(a) Laboratory-issued documentation that
verifies the accuracy of the field test kit and provides the results of the
pressure testing; and
(b) A copy of
the department-issued BAT validation card that verifies the BAT's current
certification status.
(8) When inspecting, testing, maintaining, or
repairing a backflow prevention assembly or AVB, a BAT shall:
(a) Use only replacement parts from the
original manufacturer so that the backflow prevention assembly or AVB meets the
approval requirements of WAC
246-290-490(5);
(b) Retain, or restore if needed, the
manufacturer's design, material, and operational characteristics of the
back-flow prevention assembly or AVB so that the backflow preventer meets the
approval requirements of WAC
246-290-490(5);
and
(c) Be a certified plumber as
required in chapter 18.106 RCW, if applicable.
