Long-Term Surveillance Plan for the Lowman, Idaho, Disposal Site. Revision 1 Page: 51 of 124
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" Intrusion (inadvertent or deliberate) by humans or animals.
" Animal burrowing.
" Vandalism.
* Development of trails from human or animal activity.
" Volunteer plant growth.
6.4.3 Modifvina processes
The elevation and location of the site are such that flooding on the South Fork
Payette River or Clear Creek poses no threat to the integrity of the disposal cell.
The rock riprap layer on the disposal cell has been designed to prevent erosion due
to runoff resulting from the 1-hour probable maximum precipitation event. The cell
is protected from gully intrusion by the large rock apron at the perimeter of the cell.
The roadway above the cell was backfilled and mulched to maintain slope stability.
No erosion control monitoring features are required; however, future inspection
teams should pay particular attention to the formation of any gullies above or
alongside the disposal cell. Should gullies approximating 3 ft (0.9 m) in depth
approach the disposal cell, a follow-up inspection will be scheduled to analyze the
situation and determine what action, if any, is required.
Inadvertent or casual intrusion by humans or animals is not of great concern, but
evidence of removal of the cover, extensive vandalism to signs and monuments, or
the presence of well-established trails should be described in detail. Continuing
vandalism to the site may require more active measures to control access to the
site.
If new conditions requiring continuing observation, monitoring, or immediate action
are discovered during the inspection, the inspector shall attempt to quantify the
observed conditions and identify an appropriate level of action for subsequent
inspections.
6.4.4 Vegetation
The top of the disposal cell is sloped and covered with riprap. No vegetative
growth was noted on the riprap surface. If vegetation becomes established in the
erosion protection features, integrity of the features will be assessed and a
determination will be made of the need to remove the vegetation.
North of the site is a large mulched area and to the west of the site is a mulched
area bordered by fairly steep terrain leading down to Clear Creek. Establishment of
vegetation at these locations will be monitored during site inspections.
DOEIAL/62350-36 APRIL 12, 1994
REV. 1, VER. 2 LOW004H.WCI
6-4LOWMAN LONG-TERM SURVEILLANCE PLAN
SITE INSPECTIONS
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Long-Term Surveillance Plan for the Lowman, Idaho, Disposal Site. Revision 1, report, April 1994; Albuquerque, New Mexico. (https://digital.library.unt.edu/ark:/67531/metadc1310658/m1/51/: accessed July 16, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.