1997-06-13_REPORT - M1981302

• Permit No: M1981302
• IBM Index Class Name: Report
• Doc Date: 6/13/1997
• Doc Name: EXHIBIT A 10
• Media Type: D
• Archive: No

Zapus hudronius preblei Interim Survey Guidelines, May 27, 1997 4
1. landscaped and maintained (mowed) lawns;
2. portions of stream channels diverted underground, armored with concrete, or
covered with riprap so as to exclude significant vegetation; and
3. irrigation ditches with little or no vegetation.
b. Upland sites, including, for example, short-grass prairie and prairie dog colonies.
c. Sites entirely composed of dense stands of cattails.
d. Sites continually occupied by and maintained as cropland (except native hayfields).
e. Sites at least 100 feet away from suitable Preble's habitat (except where secondary
impacts are likely).
Project sites can not be addressed from a narrowly defined "cookbook" perspective. A series
of factors influence the decision as to whether a survey is required at a particular project site.
These factors include but are not limited to: the quality and quantity of habitat present at the
site, quality and quantity of habitat nearby (especially upstream and downstream within the
same drainage), isolation or connectivity of the project site to other potential habitat, history of
Preble's occurrence in the immediate area or within the drainage, nature of proposed project,
and the potential extent of direct, secondary, or cumulative impacts the project may cause.
A project occurring in poor or marginal habitat but having potential to disrupt a travel corridor
(such as a road crossing of a creek) is of concern. In such a case it may be desirable to survey
higher quality habitat nearby rather than, or in addition to, surveying the immediate project
site.
The question of secondary impacts from proposed projects must also be considered. Projects
removed from potential Preble's habitat that have the potential to adversely impact the habitat
may also require a survey. For example, a residential or commercial development upslope
from a creek supporting potential Preble's habitat may significantly increase runoff or
otherwise impact the hydrology, and thereby the habitat present on the creek. In such an
instance, presence of Preble's within the secondary impact area should be determined.
Because of the complexities hinted at above, a qualified surveyor familiar with Preble's and
capable of assessing project impacts must make the decision as to whether a particular project
requires a trapping survey. If there is a question as to whether a site requires a survey, contact
the Service.