WAC 173-270-020
Definitions. The definitions in this
section apply to this chapter unless the context requires
otherwise.
(1) "Average daily traffic" or "ADT" means the total
traffic volume during a given time period (in whole days)
greater than one day and less than one year divided by the
number of days in that time period. ADT is determined by
WSDOT.
(2) "Best management practices" or "BMPs" means physical,
structural, and/or managerial practices that when used singly
or in combination prevent or reduce pollution of water and
have been approved by ecology. BMPs are listed and described
in the manual defined in subsection (9) of this section.
(3) "Broadcast application" means a uniform application
of pesticides to an entire area.
(4) "Buffer zone" means the minimum distance that a
pesticide is permitted to be applied from a physical feature
or sensitive area.
(5) "Capital improvement program plan" means a schedule
of permanent physical structural improvements budgeted to fit
financial resources.
(6) "Ecology" means the Washington state department of
ecology.
(7) "EPA" means the U.S. Environmental Protection Agency.
(8) "Experimental BMP" means any treatment or methodology
proposed for treatment of highway runoff that is not in the
highway runoff manual, defined in subsection (9) of this
section, and is being studied by WSDOT and/or ecology for
adoption as a BMP.
(9) "Highway runoff manual" means the manual adopted by
WSDOT and approved by ecology that contains BMPs to prevent or
reduce pollution, and described in WAC 173-270-030.
(10) "Integrated pest management" or "IPM" means the
selection, integration, and implementation of pest control
that consists of: Prevention of pest problems; monitoring and
evaluation of pests, damage and results of treatment;
acknowledgment of population levels of pests that can be
tolerated based on legal, economic, health, or aesthetic
thresholds; use of natural control agents in an ecosystem;
reliance to the maximum extent possible on nonhazardous
biological, mechanical, and cultural treatment of pests;
application of pesticides in a manner that minimizes damage to
the ecosystem's natural controls and integrity; and use of
pesticides only after all other methods have been evaluated.
(11) "Local government" means a county, city, town, or
special purpose district that has authority to manage
stormwater.
(12) "New construction" means the addition of one or more
lanes, ramps, bridges, or other major structures to an
existing state highway or the construction of a new state
highway.
(13) "Pest" means any form of plant or animal life or
virus (except virus on or in living man or other animal) which
is normally considered to be a pest or which the director of
the WSDA may declare by regulation to be a pest, including but
not limited to, any insect, other arthropod, fungus, rodent,
nematode, mollusk, or weed.
(14) "Pest treatment" means mechanical, biological,
cultural, or chemical procedures or methods to manage,
control, or reduce the influence of a pest.
(15) "Pesticide" means as defined by chapter 17.21 RCW,
the Washington Pesticide Act, and regulated by the United
States Environmental Protection Agency and WSDA.
(16) "Pollution" means such contamination or other
alteration of the physical, chemical, or biological properties
of any waters of the state, including change in temperature,
taste, color, turbidity, or odor of the waters, or such
discharge of any liquid, gaseous, solid, radioactive, or other
substance into any waters of the state as will or is likely to
create a nuisance or render such waters harmful, detrimental,
or injurious to the public health, safety or welfare, or to
domestic, commercial, industrial, agricultural, recreational,
or other legitimate beneficial use, or to livestock, wild
animals, birds, fish, or other aquatic life.
(17) "Puget Sound basin" means the waters of Puget Sound
south of Admiralty Inlet including Hood Canal and Saratoga
Passage; the waters north to the Canadian border, including
portions of the Strait of Georgia; the Strait of Juan de Fuca
south of the Canadian border; and all land draining into these
waters as mapped in WAC 173-500-040 Water resource inventory
areas numbers 1 through 19.
(18) "Quality assurance and control plan" means a
collection of policies, objectives, principles, and procedures
for attaining data of known and accepted quality and
establishes standards of performance for sampling, monitoring,
and measurement.
(19) "Sensitive area" means an area or that due to its
ground or surface water characteristics may be adversely
affected or altered directly or indirectly by pollution and
requires special vegetation management, stormwater management,
or other practices.
(20) "Spot treatment" means the application of pesticides
to a selected individual area or species.
(21) "Stormwater management manual" means the technical
manual prepared by ecology for use by local governments and
WSDOT that contains BMPs to prevent or reduce pollution in
stormwater.
(22) "Stormwater treatment" means chemical, biological,
or mechanical procedures or structural methods to remove,
reduce, or neutralize pollution.
(23) "Waters of the state" means lakes, rivers, ponds
streams, inland waters, underground waters, salt waters, and
all other surface waters and water courses within the
jurisdiction of the state of Washington.
(24) "Wetlands" means those areas that are inundated or
saturated by surface or groundwater at a frequency and
duration sufficient to support, and that under normal
circumstances do support, a prevalence of vegetation typically
adapted for life in saturated soil conditions. Wetlands
generally include swamps, marshes, bogs, and similar areas. Wetlands are identified and delineated by the "Federal Manual
for Identifying Jurisdictional Wetlands" dated January 19,
1989.
(25) "WSDA" means the Washington state department of
agriculture.
(26) "WSDOT" means the Washington state department of
transportation.
[Statutory Authority: Chapters 90.48 and 90.70 RCW. 91-11-091 (Order 91-06), § 173-270-020, filed 5/21/91,
effective 6/21/91.]