WAC 296-62-14533
Cotton dust. (1) Scope and
application.
(a) This section, in its entirety, applies to the control
of employee exposure to cotton dust in all workplaces where
employees engage in yarn manufacturing, engage in slashing and
weaving operations, or work in waste houses for textile
operations.
(b) This section does not apply to the handling or
processing of woven or knitted materials; to maritime
operations covered by chapters 296-56 and 296-304 WAC; to
harvesting or ginning of cotton; or to the construction
industry.
(c) Only subsection (8) Medical surveillance, subsection
(11)(b) Medical surveillance, subsection (11)(c) Availability,
subsection (11)(d) Transfer of records, and Appendices B, C,
and D of this section apply in all work places where employees
exposed to cotton dust engage in cottonseed processing or
waste processing operations.
(d) This section applies to yarn manufacturing and
slashing and weaving operations exclusively using washed
cotton (as defined by subsection (14) of this section) only to
the extent specified by subsection (14) of this section.
(e) This section, in its entirety, applies to the control
of all employees exposure to the cotton dust generated in the
preparation of washed cotton from opening until the cotton is
thoroughly wetted.
(f) This section does not apply to knitting, classing or
warehousing operations except that employers with these
operations, if requested by WISHA, shall grant WISHA access to
their employees and workplaces for exposure monitoring and
medical examinations for purposes of a health study to be
performed by WISHA on a sampling basis.
(2) Definitions applicable to this section:
(a) "Blow down" - the cleaning of equipment and surfaces
with compressed air.
(b) "Blow off" - the use of compressed air for cleaning
of short duration and usually for a specific machine or any
portion of a machine.
(c) "Cotton dust" - dust present in the air during the
handling or processing of cotton, which may contain a mixture
of many substances including ground-up plant matter, fiber,
bacteria, fungi, soil, pesticides, noncotton plant matter and
other contaminants which may have accumulated with the cotton
during the growing, harvesting and subsequent processing or
storage periods. Any dust present during the handling and
processing of cotton through the weaving or knitting of
fabrics, and dust present in other operations or manufacturing
processes using raw or waste cotton fibers or cotton fiber
by-products from textile mills are considered cotton dust
within this definition. Lubricating oil mist associated with
weaving operations is not considered cotton dust.
(d) "Director" - the director of labor and industries or
his authorized representative.
(e) "Equivalent instrument" - a cotton dust sampling
device that meets the vertical elutriator equivalency
requirements as described in subsection (4)(a)(iii) of this
section.
(f) "Lint-free respirable cotton dust" - particles of
cotton dust of approximately 15 microns or less aerodynamic
equivalent diameter.
(g) "Vertical elutriator cotton dust sampler" or
"vertical elutriator" - a dust sampler which has a particle
size cut-off at approximately 15 microns aerodynamic
equivalent diameter when operating at the flow rate of 7.4 ±
0.2 liters per minute.
(h) "Waste processing" - waste recycling (sorting,
blending, cleaning and willowing) and garnetting.
(i) "Yarn manufacturing" - all textile mill operations
from opening to, but not including, slashing and weaving.
(3) Permissible exposure limits and action levels.
(a) Permissible exposure limits (PEL).
(i) The employer shall assure that no employee who is
exposed to cotton dust in yarn manufacturing and cotton
washing operations is exposed to airborne concentrations of
lint-free respirable cotton dust greater than 200 µg/m3 mean
concentration, averaged over an eight-hour period, as measured
by a vertical elutriator or an equivalent instrument.
(ii) The employer shall assure than no employee who is
exposed to cotton dust in textile mill waste house operations
or is exposed in yarn manufacturing to dust from "lower grade
washed cotton" as defined in subsection (14)(e) of this
section is exposed to airborne concentrations of lint-free
respirable cotton dust greater than 500 µg/m3 mean
concentration, averaged over an eight-hour period, as measured
by a vertical elutriator or an equivalent instrument.
(iii) The employer shall assure that no employee who is
exposed to cotton dust in the textile processes known as
slashing and weaving is exposed to airborne concentrations of
lint-free respirable cotton dust greater than 750 µg/m3 mean
concentration, averaged over an eight-hour period, as measured
by a vertical elutriator or an equivalent instrument.
(b) Action levels.
(i) The action level for yarn manufacturing and cotton
washing operations is an airborne concentration of lint-free
respirable cotton dust of 100 µg/m3 mean concentration,
averaged over an eight-hour period, as measured by a vertical
elutriator or an equivalent instrument.
(ii) The action level for waste houses for textile
operations is an airborne concentration of lint-free
respirable cotton dust of 250 µg/m3 mean concentration,
averaged over an eight-hour period, as measured by a vertical
elutriator or an equivalent instrument.
(iii) The action level for the textile processes known as
slashing and weaving is an airborne concentration of lint-free
respirable cotton dust of 375 µg/m3 mean concentration,
averaged over an eight-hour period, as measured by a vertical
elutriator or an equivalent instrument.
(4) Exposure monitoring and measurement.
(a) General.
(i) For the purposes of this section, employee exposure
is that exposure which would occur if the employee were not
using a respirator.
(ii) The sampling device to be used shall be either the
vertical elutriator cotton dust sampler or an equivalent
instrument.
(iii) If an alternative to the vertical elutriator cotton
dust sampler is used, the employer shall establish equivalency
by demonstrating that the alternative sampling devices:
(A) It collects respirable particulates in the same range
as the vertical elutriator (approximately 15 microns);
(B) Replicate exposure data used to establish equivalency
are collected in side-by-side field and laboratory
comparisons; and
(C) A minimum of 100 samples over the range of 0.5 to 2
times the permissible exposure limit are collected, and ninety
percent of these samples have an accuracy range of plus or
minus twenty-five percent of the vertical elutriator reading
with a ninety-five percent confidence level as demonstrated by
a statistically valid protocol. (An acceptable protocol for
demonstrating equivalency is described in Appendix E of this
section.)
(iv) WISHA will issue a written opinion stating that an
instrument is equivalent to a vertical elutriator cotton dust
sampler if:
(A) A manufacturer or employer requests an opinion in
writing and supplies the following information:
(I) Sufficient test data to demonstrate that the
instrument meets the requirements specified in this paragraph
and the protocol specified in Appendix E of this section;
(II) Any other relevant information about the instrument
and its testing requested by WISHA; and
(III) A certification by the manufacturer or employer
that the information supplied is accurate, and
(B) If WISHA finds, based on information submitted about
the instrument, that the instrument meets the requirements for
equivalency specified by this subsection.
(b) Initial monitoring. Each employer who has a place of
employment within the scope of subsections (1)(a), (d) or (e)
of this section shall conduct monitoring by obtaining
measurements which are representative of the exposure of all
employees to airborne concentrations of lint-free respirable
cotton dust over an eight-hour period. The sampling program
shall include at least one determination during each shift for
each work area.
(c) Periodic monitoring.
(i) If the initial monitoring required by (4)(b) of this
section or any subsequent monitoring reveals employee exposure
to be at or below the permissible exposure limit, the employer
shall repeat the monitoring for those employees at least
annually.
(ii) If the initial monitoring required by (4)(b) of this
section or any subsequent monitoring reveals employee exposure
to be above the PEL, the employer shall repeat the monitoring
for those employees at least every six months.
(iii) Whenever there has been a production, process, or
control change which may result in new or additional exposure
to cotton dust, or whenever the employer has any other reason
to suspect an increase in employee exposure, the employer
shall repeat the monitoring and measurements for those
employees affected by the change or increase.
(d) Employee notification.
(i) Within fifteen working days after the receipt of
monitoring results, the employer shall notify each employee in
writing of the exposure measurements which represent that
employee's exposure.
(ii) Whenever the results indicate that the employee's
exposure exceeds the applicable permissible exposure limit
specified in subsection (3) of this section, the employer
shall include in the written notice a statement that the
permissible exposure limit was exceeded and a description of
the corrective action taken to reduce exposure below the
permissible exposure limit.
(5) Methods of compliance.
(a) Engineering and work practice controls. The employer
shall institute engineering and work practice controls to
reduce and maintain employee exposure to cotton dust at or
below the permissible exposure limit specified in subsection
(3) of this section, except to the extent that the employer
can establish that such controls are not feasible.
(b) Whenever feasible engineering and work practice
controls are not sufficient to reduce employee exposure to or
below the permissible exposure limit, the employer shall
nonetheless institute these controls to immediately reduce
exposure to the lowest feasible level, and shall supplement
these controls with the use of respirators which shall comply
with the provisions of subsection (6) of this section.
(c) Compliance program.
(i) Where the most recent exposure monitoring data
indicates that any employee is exposed to cotton dust levels
greater than the permissible exposure limit, the employer
shall establish and implement a written program sufficient to
reduce exposures to or below the permissible exposure limit
solely by means of engineering controls and work practices as
required by (a) of this subsection.
(ii) The written program shall include at least the
following:
(A) A description of each operation or process resulting
in employee exposure to cotton dust;
(B) Engineering plans and other studies used to determine
the controls for each process;
(C) A report of the technology considered in meeting the
permissible exposure limit;
(D) Monitoring data obtained in accordance with
subsection (4) of this section;
(E) A detailed schedule for development and
implementation of engineering and work practice controls,
including exposure levels projected to be achieved by such
controls;
(F) Work practice program; and
(G) Other relevant information.
(iii) The employer's schedule as set forth in the
compliance program, shall project completion of the
implementation of the compliance program no later than March
27, 1984 or as soon as possible if monitoring after March 27,
1984 reveals exposures over the PEL, except as provided in
(13)(b)(ii)(B) of this section.
(iv) The employer shall complete the steps set forth in
his program by the dates in the schedule.
(v) Written programs shall be submitted, upon request, to
the director, and shall be available at the worksite for
examination and copying by the director, and any affected
employee or their designated representatives.
(vi) The written programs required under subsection
(5)(c) of this section shall be revised and updated at least
every six months to reflect the current status of the program
and current exposure levels.
(d) Mechanical ventilation. When mechanical ventilation
is used to control exposure, measurements which demonstrate
the effectiveness of the system to control exposure, such as
capture velocity, duct velocity, or static pressure shall be
made at reasonable intervals.
(6) Use of respirators.
(a) General. For employees who are required to use
respirators by this section, the employer must provide each employee an appropriate
respirator that complies with the requirements of this
section. Respirators must be used during:
(i) Periods necessary to install or implement feasible
engineering controls and work-practice controls;
(ii) Maintenance and repair activities for which
engineering and work-practice controls are not feasible;
(iii) Work operations for which feasible engineering and
work-practice controls are not yet sufficient to reduce
employee exposure to or below the permissible exposure limits;
(iv) Work operations specified under subsection (7)(a) of
this section;
(v) Periods for which an employee requests a respirator.
(b) Respirator program.
(i) The employer must develop, implement and maintain a
respiratory protection program as required by chapter 296-842
WAC, Respirators, which covers each employee required by this
chapter to use a respirator.
(ii) Whenever a physician determines that an employee who
works in an area in which the cotton-dust concentration
exceeds the PEL is unable to use a respirator, including a
powered air-purifying respirator, the employee must be given
the opportunity to transfer to an available position, or to a
position that becomes available later, that has a cotton-dust
concentration at or below the PEL. The employer must ensure
that such employees retain their current wage rate or other
benefits as a result of the transfer.
(c) Respirator selection. The employer must:
(i) Select and provide to employees the appropriate
respirators by following requirements in this section and WAC 296-842-13005, found in the respirator rule.
(ii) Provide employees with a powered air-purifying
respirator (PAPR) when the employee chooses to use a PAPR
instead of a negative-pressure air-purifying respirator, and
the PAPR will provide adequate protection.
(iii) Limit the use of filtering facepiece respirators
for protection against cotton dust to concentrations less than
or equal to five times (5x) the PEL.
(iv) Provide high-efficiency particulate air (HEPA)
filters or N-, R-, or P-100 series filters for powered
air-purifying respirators (PAPRs) and negative-pressure
air-purifying respirators when used in cotton dust
concentrations greater than ten times (10x) the PEL.
(7) Work practices. Each employer shall, regardless of
the level of employee exposure, immediately establish and
implement a written program of work practices which shall
minimize cotton dust exposure. The following shall be
included where applicable:
(a) Compressed air "blow down" cleaning shall be
prohibited, where alternative means are feasible. Where
compressed air is used for cleaning, the employees performing
the "blow down" or "blow off" shall wear suitable respirators.
Employees whose presence is not required to perform "blow
down" or "blow off" shall be required to leave the area
affected by the "blow down" or "blow off" during this cleaning
operation.
(b) Cleaning of clothing or floors with compressed air
shall be prohibited.
(c) Floor sweeping shall be performed with a vacuum or
with methods designed to minimize dispersal of dust.
(d) In areas where employees are exposed to
concentrations of cotton dust greater than the permissible
exposure limit, cotton and cotton waste shall be stacked,
sorted, baled, dumped, removed or otherwise handled by
mechanical means, except where the employer can show that it
is infeasible to do so. Where infeasible, the method used for
handling cotton and cotton waste shall be the method which
reduces exposure to the lowest level feasible.
(8) Medical surveillance.
(a) General.
(i) Each employer covered by the standard shall institute
a program of medical surveillance for all employees exposed to
cotton dust.
(ii) The employer shall assure that all medical
examinations and procedures are performed by or under the
supervision of a licensed physician and are provided without
cost to the employee.
(iii) Persons other than licensed physicians, who
administer the pulmonary function testing required by this
section shall have completed a NIOSH approved training course
in spirometry.
(b) Initial examinations. The employer shall provide
medical surveillance to each employee who is or may be exposed
to cotton dust. For new employees' this examination shall be
provided prior to initial assignment. The medical
surveillance shall include at least the following:
(i) A medical history;
(ii) The standardized questionnaire contained in WAC 296-62-14537; and
(iii) A pulmonary function measurement, including a
determination of forced vital capacity (FVC) and forced
expiratory volume in one second (FEV1), the FEV1/FVC ratio, and
the percentage that the measured values of FEV1 and FVC differ
from the predicted values, using the standard tables in WAC 296-62-14539. These determinations shall be made for each
employee before the employee enters the workplace on the first
day of the work week, preceded by at least thirty-five hours
of no exposure to cotton dust. The tests shall be repeated
during the shift, no less than four hours and no more than ten
hours after the beginning of the work shift; and, in any
event, no more than one hour after cessation of exposure. Such exposure shall be typical of the employee's usual
workplace exposure. The predicted FEV1 and FVC for blacks shall
be multiplied by 0.85 to adjust for ethnic differences.
(iv) Based upon the questionnaire results, each employee
shall be graded according to Schilling's byssinosis
classification system.
(c) Periodic examinations.
(i) The employer shall provide at least annual medical
surveillance for all employees exposed to cotton dust above
the action level in yarn manufacturing, slashing and weaving,
cotton washing and waste house operations. The employer shall
provide medical surveillance at least every two years for all
employees exposed to cotton dust at or below the action level,
for all employees exposed to cotton dust from washed cotton
(except from washed cotton defined in subsection (9)(c) of
this section), and for all employees exposed to cotton dust in
cottonseed processing and waste processing operations. Periodic medical surveillance shall include at least an update
of the medical history, standardized questionnaire (Appendix
B-111), Schilling byssinosis grade, and the pulmonary function
measurements in (b)(iii) of this subsection.
(ii) Medical surveillance as required in (c)(i) of this
subsection shall be provided every six months for all
employees in the following categories:
(A) An FEV1 of greater than eighty percent of the
predicted value, but with an FEV1 decrement of five percent or
200 ml. on a first working day;
(B) An FEV1 of less than eighty percent of the predicted
value; or
(C) Where, in the opinion of the physician, any
significant change in questionnaire findings, pulmonary
function results, or other diagnostic tests have occurred.
(iii) An employee whose FEV1 is less than sixty percent of
the predicted value shall be referred to a physician for a
detailed pulmonary examination.
(iv) A comparison shall be made between the current
examination results and those of previous examinations and a
determination made by the physician as to whether there has
been a significant change.
(d) Information provided to the physician. The employer
shall provide the following information to the examining
physician:
(i) A copy of this regulation and its appendices;
(ii) A description of the affected employee's duties as
they relate to the employee's exposure;
(iii) The employee's exposure level or anticipated
exposure level;
(iv) A description of any personal protective equipment
used or to be used; and
(v) Information from previous medical examinations of the
affected employee which is not readily available to the
examining physician.
(e) Physician's written opinion.
(i) The employer shall obtain and furnish the employee
with a copy of a written opinion from the examining physician
containing the following:
(A) The results of the medical examination and tests
including the FEV1, FVC, and FEV1/FVC ratio;
(B) The physician's opinion as to whether the employee
has any detected medical conditions which would place the
employee at increased risk of material impairment of the
employee's health from exposure to cotton dust;
(C) The physician's recommended limitations upon the
employee's exposure to cotton dust or upon the employee's use
of respirators including a determination of whether an
employee can wear a negative pressure respirator, and where
the employee cannot, a determination of the employee's ability
to wear a powered air purifying respirator; and
(D) A statement that the employee has been informed by
the physician of the results of the medical examination and
any medical conditions which require further examination or
treatment.
(ii) The written opinion obtained by the employer shall
not reveal specific findings or diagnoses unrelated to
occupational exposure.
(9) Employee education and training.
(a) Training program.
(i) The employer shall train each employee exposed to cotton dust in
accordance with the requirements of this section and shall
assure that each employee is informed of the following:
(A) The acute and long term health hazards associated
with exposure to cotton dust;
(B) The names and descriptions of jobs and processes
which could result in exposure to cotton dust at or above the
PEL.
(C) The measures, including work practices required by
subsection (7) of this section, necessary to protect the
employee from exposures in excess of the permissible exposure
limit;
(D) The purpose, proper use, limitations, and other
training requirements for respiratory protection as required
by subsection (6) of this section and chapter 296-842 WAC (see
WAC 296-842-11005, 296-842-16005 and 296-842-19005);
(E) The purpose for and a description of the medical
surveillance program required by subsection (8) of this
section and other information which will aid exposed employees
in understanding the hazards of cotton dust exposure; and
(F) The contents of this standard and its appendices.
(ii) The training program shall be provided prior to
initial assignment and shall be repeated annually for each
employee exposed to cotton dust, when job assignments or work
processes change and when employee performance indicates a
need for retraining.
(b) Access to training materials.
(i) Each employer shall post a copy of this section with
its appendices in a public location at the workplace, and
shall, upon request, make copies available to employees.
(ii) The employer shall provide all materials relating to
the employee training and information program to the director
upon request.
(10) Signs. The employer shall post the following
warning sign in each work area where the permissible exposure
limit for cotton dust is exceeded:
WARNING
COTTON DUST WORK AREA
MAY CAUSE ACUTE OR DELAYED LUNG INJURY
(BYSSINOSIS)
RESPIRATORS REQUIRED IN THIS AREA
(11) Recordkeeping.
(a) Exposure measurements.
(i) The employer shall establish and maintain an accurate
record of all measurements required by subsection (4) of this
section.
(ii) The record shall include:
(A) A log containing the items listed in WAC 296-62-14535
(4)(a), and the dates, number, duration, and results of each
of the samples taken, including a description of the procedure
used to determine representative employee exposures;
(B) The type of protective devices worn, if any, and
length of time worn; and
(C) The names, Social Security number, job
classifications, and exposure levels of employees whose
exposure the measurement is intended to represent.
(iii) The employer shall maintain this record for at
least twenty years.
(b) Medical surveillance.
(i) The employer shall establish and maintain an accurate
medical record for each employee subject to medical
surveillance required by subsection (8) of this section.
(ii) The record shall include:
(A) The name and Social Security number and description
of the duties of the employee;
(B) A copy of the medical examination results including
the medical history, questionnaire response, results of all
tests, and the physician's recommendation;
(C) A copy of the physician's written opinion;
(D) Any employee medical complaints related to exposure
to cotton dust;
(E) A copy of this standard and its appendices, except
that the employer may keep one copy of the standard and the
appendices for all employees, provided that he references the
standard and appendices in the medical surveillance record of
each employee; and
(F) A copy of the information provided to the physician
as required by subsection (8)(d) of this section.
(iii) The employer shall maintain this record for at
least twenty years.
(c) Availability.
(i) The employer shall make all records required to be
maintained by subsection (11) of this section available to the
director for examination and copying.
(ii) Employee exposure measurement records and employee
medical records required by this subsection shall be provided
upon request to employees, designated representatives, and the
assistant director in accordance with chapter 296-802 WAC.
(d) Transfer of records.
(i) Whenever the employer ceases to do business, the
successor employer shall receive and retain all records
required to be maintained by subsection (11) of this section.
(ii) Whenever the employer ceases to do business, and
there is no successor employer to receive and retain the
records for the prescribed period, these records shall be
transmitted to the director.
(iii) At the expiration of the retention period for the
records required to be maintained by this section, the
employer shall notify the director at least three months prior
to the disposal of such records and shall transmit those
records to the director if he requests them within that
period.
(iv) The employer shall also comply with any additional
requirements involving transfer of records set forth in
chapter 296-802 WAC.
(12) Observation of monitoring.
(a) The employer shall provide affected employees or
their designated representatives an opportunity to observe any
measuring or monitoring of employee exposure to cotton dust
conducted pursuant to subsection (4) of this section.
(b) Whenever observation of the measuring or monitoring
of employee exposure to cotton dust requires entry into an
area where the use of personal protective equipment is
required, the employer shall provide the observer with and
assure the use of such equipment and shall require the
observer to comply with all other applicable safety and health
procedures.
(c) Without interfering with the measurement, observers
shall be entitled to:
(i) An explanation of the measurement procedures;
(ii) An opportunity to observe all steps related to the
measurement of airborne concentrations of cotton dust
performed at the place of exposure; and
(iii) An opportunity to record the results obtained.
(13) Washed cotton.
(a) Exemptions. Cotton, after it has been washed by the
processes described in this section is exempt from all or
parts of this section as specified if the requirements of this
section are met.
(b) Initial requirements.
(i) In order for an employer to qualify as exempt or
partially exempt from this standard for operations using
washed cotton, the employer must demonstrate that the cotton
was washed in a facility which is open to inspection by the
director and the employer must provide sufficient accurate
documentary evidence to demonstrate that the washing methods
utilized meet the requirements of this section.
(ii) An employer who handles or processes cotton which
has been washed in a facility not under the employer's control
and claims an exemption or partial exemption under this
paragraph, must obtain from the cotton washer and make
available at the worksite, to the director, or his designated
representative, to any affected employee, or to their
designated representative the following:
(A) A certification by the washer of the cotton of the
grade of cotton, the type of washing process, and that the
batch meets the requirements of this section:
(B) Sufficient accurate documentation by the washer of
the cotton grades and washing process; and
(C) An authorization by the washer that the director may
inspect the washer's washing facilities and documentation of
the process.
(c) Medical and dyed cotton. Medical grade (USP) cotton,
cotton that has been scoured, bleached and dyed, and
mercerized yarn shall be exempt from all provisions of this
standard.
(d) Higher grade washed cotton. The handling or
processing of cotton classed as "low middling light spotted or
better" (color grade 52 or better and leaf grade code 5 or
better according to the 1993 USDA classification system) shall
be exempt from all provisions of the standard except
requirements of subsection (8) of this section, medical
surveillance; subsection (11)(b) through (d) of this section,
recordkeeping-medical records, and Appendices B, C, and D of
this section, if they have been washed on one of the following
systems:
(i) On a continuous batt system or a rayon rinse system
including the following conditions:
(A) With water;
(B) At a temperature of no less than 60°C;
(C) With a water-to-fiber ratio of no less than 40:1; and
(D) With the bacterial levels in the wash water
controlled to limit bacterial contamination of the cotton.
(ii) On a batch kier washing system including the
following conditions:
(A) With water;
(B) With cotton fiber mechanically opened and thoroughly
prewetted before forming the cake;
(C) For low-temperature processing, at a temperature of
no less than 60°C with a water-to-fiber ratio of no less than
40:1; or, for high-temperature processing, at a temperature of
no less than 93°C with a water-to-fiber ratio of no less than
15:1;
(D) With a minimum of one wash cycle followed by two
rinse cycles for each batch, using fresh water in each cycle;
and
(E) With bacterial levels in the wash water controlled to
limit bacterial contamination of the cotton.
(e) Lower grade washed cotton. The handling and
processing of cotton of grades lower than "low middling light
spotted," that has been washed as specified in (d) of this
subsection and has also been bleached, shall be exempt from
all provisions of the standard except the requirements of
subsection (3)(a) Permissible exposure limits, subsection (4)
Exposure monitoring and measurement, subsection (8) Medical
surveillance, subsection (11) Recordkeeping, and Appendices B,
C and D of this section.
(f) Mixed grades of washed cotton. If more than one
grade of washed cotton is being handled or processed together,
the requirements of the grade with the most stringent exposure
limit, medical and monitoring requirements shall be followed.
(14) Appendices.
(a) Appendix B (B-I, B-II and B-III), WAC 296-62-14537,
Appendix C, WAC 296-62-14539 and Appendix D, WAC 296-62-14541
are incorporated as part of this chapter and the contents of
these appendices are mandatory.
(b) Appendix A of this chapter, WAC 296-62-14535 contains
information which is not intended to create any additional
obligations not otherwise imposed or to detract from any
existing obligations.
(c) Appendix E of this chapter is a protocol which may be
followed in the validation of alternative measuring devices as
equivalent to the vertical elutriator cotton dust sampler. Other protocols may be used if it is demonstrated that they
are statistically valid, meet the requirements in subsection
(4)(a)(iii) of this section, and are appropriate for
demonstrating equivalency.
[Statutory Authority: RCW 49.17.010, 49.17.040, 49.17.050,
49.17.060. 09-15-145, § 296-62-14533, filed 7/21/09,
effective 9/1/09; 07-05-072, § 296-62-14533, filed 2/20/07,
effective 4/1/07; 05-03-093, § 296-62-14533, filed 1/18/05,
effective 3/1/05; 04-10-026, § 296-62-14533, filed 4/27/04,
effective 8/1/04. Statutory Authority: RCW 49.17.010,[49.17].040
, and [49.17].050. 01-19-065, § 296-62-14533,
filed 9/18/01, effective 11/1/01; 99-10-071, § 296-62-14533,
filed 5/4/99, effective 9/1/99. Statutory Authority: Chapter 49.17 RCW. 87-24-051 (Order 87-24), § 296-62-14533, filed
11/30/87. Statutory Authority: RCW 49.17.040 and 49.17.050. 86-16-009 (Order 86-28), § 296-62-14533, filed 7/25/86;
82-03-023 (Order 82-1), § 296-62-14533, filed 1/15/82. Statutory Authority: 49.17.040, 49.17.050, and 49.17.240. 81-16-015 (Order 81-20), § 296-62-14533, filed 7/27/81. Statutory Authority: RCW 49.17.040, 49.17.050, 49.17.240,
chapters 42.30 and 43.22 RCW. 80-17-014 (Order 80-20), §
296-62-14533, filed 11/13/80.]