ALP Transfer Inspection Report

Animas -La Plata Project
Feb 13, 2013 Draft Transfer Inspection Report
4. Differential Water Level Measuring Device
The differential water -level measuring device uses ultrasonic technology to measure the
water levels upstream and downstream of the fish screens. One transducer and fiberglass
reinforced pipe (FRP) stilling well is located upstream of the fish screens. One transducer
and FRP stilling well is located downstream of the fish screens. One water level measuring
control device (receiver /monitor) is mounted in the intake structure control building.
Reclamation will ensure that this device functions as designed, including:
• Starting fish screen cleaner at predetermined differential.
• Shut down pumping plant at predetermined differential.
• Shut down pumping plant at downstream measuring device elevation of 6438.
• Tie into SCADA with differential alarm and value.
Operation during the 2013 reservoir filling will be confirmed, as well as remote water level
sensing from the Pumping Plant and Fish Screen cleaner operator. Backup staff gauges were
installed and calibrated next to stilling wells.
TRANSFER ISSUE
STIPULATION
Programmable logic has not
Reclamation will design and install a hinged guard rack at the
been verified for the
Reclamation will confirm all systems function as designed during
operation the differential
the 2013 reservoir filling. Differential has been verified, but the
water -level devices in
low shutoff is not in place
conjunction with DPP or fish
screen sweep
5. Fish Bypass
The fish bypass consists of a 30" HDPE conduit downstream of the fish screens with a slide
gate at the upstream end of the conduit and a stoplog seat embedded in a concrete outfall
structure at the downstream end, in the Animas River.
TRANSFER ISSUE
STIPULATION
The fish bypass outfall is
Reclamation will design and install a hinged guard rack at the
not protected from
outfall structure.
inadvertent entry
6. Pump Intake Pipe
The pump intake pipe consists of a 84" diameter steel pipe that connects the intake channel
with the main pumping plant suction manifold.
7. Intake Structure Control Building
The intake control building is located near the intake structure and contains the controls for
the crest gates, fish screen cleaner, and water level measuring devices. Concrete settlement
near this structure is being monitored. Safety strips were painted near settlement area to
indicate a tripping hazard.
Transferred Works Inspection 14 Animas -La Plata Project