Sayre Report - Hazard Mitigation Web Portal - State of California

hiking and equestrian trails. Regional water supply is potentially at risk from loss of
vegetation on hill slopes. The Los Angeles County Public Works is currently working on
various basins to remove the silt and debris. Several basins have had a significant
increase in sediment and debris from a recent storm.
The Pacoima Dam at the Los Angeles county maintenance yard’s bridge (15ft x 30ft
steel frame “5 ton limit”) was burned. This bridge is one ingress and egress route
between the maintenance yard and the Pacoima trail road. The bridge substructure and
two abutments appeared to be in good condition. The Hoist House is concrete masonry
with a metal corrugated roof building (10ft x 12ft) that housed the engine and
transmission cables located at the base of the Pacoima Dam. The house needs to be
reconstructed to pre-disaster conditions. Rock Retention Barrier Walls (steel piles with
wood planking) need to be reconstructed. This impacts approximately 1,040 linear feet
of walls. The walls are located on the access road to the dam behind the dam office. A
John Deere 444E loader was also damaged or destroyed and needs to be repaired or
replaced. The operating area of the dam and its facilities need to be protected from the
run-off of the burned steep slopes by emergency protection measures such as, k-rails,
hay bales, etc.
The Oak Ridge Mobile Home Park is full of potentially hazardous debris from the burnt
mobile homes. This should be protected from any runoff escaping into the areas storm
drains or streams by utilizing erosion protection measures such as; hay wattles, sand
bags, straw bales and/or k-rails.
The Olive View Hospital has several areas that are located to the West Campus of the
hospital that has been assessed by the Los Angeles County Fire Department HAZ-MAT
team and hospital facilities department. All issues concerning HAZ-MAT have been
addressed by the hospital facilities department and protection measures have been
implemented. The above remedial actions may be necessary if the facilities in question
do not fall within the exclusive authority of another Federal agency. The occurrence of
mud flows, debris flows, and flooding may have the following effects.
Debris flows may be deposited on public roads, preventing the use of these roads for
ingress and egress. Debris basins, spreading basins, and flood control channels, may
be partially or completely filled with sediment, rock, timber, and other debris,
compromising their effectiveness to provide protection during the future storms. Only
measures necessary to provide protection for a flood associated with a five-year storm
event are eligible.