(1) Within the bull trout overlay, all
available shade will be retained within 75 feet from the edge of the bankfull
width or the outer edge of the CMZ (whichever is greater) along Type S or F
Waters. (See board manual, section 1.)
(2) Determination of adequate shade outside
the bull trout overlay. The temperature prediction method mentioned in
subsections (2) and (3) of this section shall be used to determine appropriate
shade levels along Type S and F Waters to prevent excessive water temperatures,
which may have detrimental impact on aquatic resources. No tree may be
harvested within 75 feet from the edge of the bankfull width or the outer edge
of the CMZ (whichever is greater) of any Type S or F Water if, according to the
methodology, that tree is providing shade to the stream necessary to maintain
compliance with temperature standards. If a landowner elects to remove any tree
within 75 feet of any Type S or F Water, the landowner must demonstrate, using
the methods in the board manual section 1, that the removal of the tree would
not be contrary to the restrictions of this subsection.
(3)
Temperature prediction
method. In addition to the riparian management zone requirements, leave
trees shall be retained in riparian management zones on Type S and F Waters as
provided by the method described in the board manual which includes the
following considerations:
(a) Minimum shade
retention requirements; and
(b)
Regional water temperature characteristics; and
(c) Elevation; and
(d) Temperature criteria defined for stream
classes in chapter
173-201A WAC.
(4) Leave tree requirements for shade. The
method described in subsection (3) of this section must be used to establish
the minimum required shade cover based on site specific characteristics. When
site specific data indicate that preharvest conditions do not meet the minimums
established by the method, no additional shade removal from riparian management
zones will be allowed.
(5) Shade
requirements must be satisfied whether or not the inner zone includes a
stream-adjacent parallel road. Nothing will preclude or limit the harvest of
shade trees in connection with the construction and maintenance of road
crossings or the creation and use of yarding corridors. (See WAC
222-30-060(1).)
(6) Waivers. The department may
waive or modify the shade requirements where:
The temperature method indicates that additional shade will not
affect water temperature.